Search engines find the specific information they’re looking for. With many of pages of information online, without effective search engines, finding anything on the Internet would be almost impossible. Different search engines work in different specific ways, but they all benefit the same basic principles.
The term "search engine" is often used generically to describe both crawler-based search engines and human-powered directories. These two types of search engines gather their listings in radically different ways.
Crawler-Based Search Engines
Crawler-based search engines, such as Google, create their listings automatically. They "crawl" or "spider" the web, then people search through what they have found.
If you change your web pages, crawler-based search engines eventually find these changes, and that can affect how you are listed. Page titles, body copy and other elements all play a role.
Human-Powered Directories
A human-powered directory, such as the Open Directory, depends on humans for its listings. You submit a short description to the directory for your entire site, or editors write one for sites they review. A search looks for matches only in the descriptions submitted.
Changing your web pages has no effect on your listing. Things that are useful for improving a listing with a search engine have nothing to do with improving a listing in a directory. The only exception is that a good site, with good content, might be more likely to get reviewed for free than a poor site.
"Hybrid Search Engines" Or Mixed Results
In the web's early days, it used to be that a search engine either presented crawler-based results or human-powered listings. Today, it extremely common for both types of results to be presented. Usually, a hybrid search engine will favor one type of listings over another. For example, MSN Search is more likely to present human-powered listings from LookSmart. However, it does also present crawler-based results (as provided by Inktomi), especially for more obscure queries.
List of example search engines
www.google.com
www.yahoo.com
www.msn.com
www.altavista.com
www.ask.com
Reference
http://searchenginewatch.com/article/2065173/How-Search-Engines-Work
http://www.wisegeek.com/how-do-search-engines-work.htm
Piyapong Sansniyakiat
วันจันทร์ที่ 17 ตุลาคม พ.ศ. 2554
วันจันทร์ที่ 10 ตุลาคม พ.ศ. 2554
Chapter7
To help and support the flooding crisis in Thailand, I think food and fresh water are very important, because people need to consume food and water. We need to provide a necessessary sanitary to make cleaness to people. Light candles are also very important at the night time to help people see things. Clean wearing suites should be provided, because people who are victims do not have clean water to wash their clothes. Doctors are also important, because the more flooding is the more germs. Phyciology doctors are imortant too, because some people have been suffered for more than 3 months. They lost almost everything.
วันอาทิตย์ที่ 9 ตุลาคม พ.ศ. 2554
Chapter6
Example of report :
Student name:
Student number:
Tutor name:
Tutorial time:
Abstract
This report investigates the current state of scanner technology and examines the predicted future advancements of scanners. A brief history of the scanner and its operation is initially outlined. The discussion then focuses on the advantages and limitations of the five main types of scanners in common use today: drum, flatbed, sheet-fed, slide, and hand held scanners. The performance of these scanners is examined in relation to four main criteria: resolution, bit-depth, dynamic range and software. It is concluded that further technological advances in these four areas as well as the deployment of new sensor technology will continue to improve the quality of scanned images. It is also suggested that specialised scanners will increasingly be incorporated into other types of technology such as digital cameras.
By examining a range of recently published journal articles, magazine articles and internet sites on the topic of scanners this report describes the main types of scanners in common use today and examines their performance in relation to four criteria: resolution, bit-depth, dynamic range and software. The report then considers the effect of further technological advances in these four areas, as well as the deployment of new sensor technology on the future development of scanners.
The first scanner, initially referred to as a 'reading machine', was developed in 1960 by Jacob Rabinow, a Russian born engineer. The device could scan printed material and then compare each character to a set of standards in a matrix using, for the first time, the "best match principle" to determine the original message (Blatner, Fleishman and Roth 1998, p.3). This reading machine was to form the basis for the development of current scanning, sorting and processing machines.
To create a file on the computer that represents a colour image, the scanner divides the image into a grid with many individual points called pixels or picture elements (Scanner tips 2000). A scanning head, termed a row of 'eyes', reads over the grid and assigns a number to each pixel based on the main colour in that pixel, using green, blue and red. For example an aqua pixel would be saved as a number to represent the proportion of blue, green and red which represents the colour aqua (Scanners, digital cameras and photo CDs 2000).
Thus for a scanner to produce a high quality scan with colour, a higher bit depth is required. In general, current scanners have a bit depth of 24, which means that 8 bits of information can be collected for the three primary colours used in scanning; blue, red and green (Anderson 1999). This high resolution allows scanners to produce images close to photographic quality.
Blatner, D., Fleishman, G. Roth, G. (1998) Real world scanning and halftones 2nd edition, Peachpit Press, USA.
Englander, I (2000). The Architecture of computer hardware and systems software. John Wiley, USA, p272.
Figeiredo, J. McIllree, J. Thomas, N. (1996) Introducing information technology 2nd edition Jacaranda Press, Singapore, p145.
Grotta, D. and Weiner, S. What's now ...What's next. [http://www.zdnet.com/pcmag/features/scanners98/intro.html] PC Magazines 20 October 1998. 8/4/00
Prepress, scanners, digital cameras and photoCDs. [http://www.prepress.pps.com/mem/lib/ptr/scanners.html] 1998. 6/4/00
Scansoft scanner tips [http://www.scannercentral.com/scanners/tips/tips1.asp] 2000.6/4/00
Sullivan. M. Types of scanners. [http://hsdesign.com/scanning/types/types.html] 1996. 8/4/00
Example of Citation :
One Author [5.6.1]
Editor or Compiler [5.6.2]
Two or More Authors [5.6.4]
Reference :
Google.com
Anderson, D. The PC Guide. [http:www.pctechguide.com/18scanners.htm].
Blatner, D., Fleishman, G. Roth, G. (1998) Real world scanning and halftones 2nd edition, Peachpit Press, USA.
Englander, I (2000). The Architecture of computer hardware and systems software. John Wiley, USA, p272.
Figeiredo, J. McIllree, J. Thomas, N. (1996) Introducing information technology 2nd edition Jacaranda Press, Singapore, p145.
Grotta, D. and Weiner, S. What's now ...What's next. [http://www.zdnet.com/pcmag/features/scanners98/intro.html] PC Magazines 20 October 1998. 8/4/00
Prepress, scanners, digital cameras and photoCDs. [http://www.prepress.pps.com/mem/lib/ptr/scanners.html] 1998. 6/4/00
Scansoft scanner tips [http://www.scannercentral.com/scanners/tips/tips1.asp] 2000.6/4/00
Sullivan. M. Types of scanners. [http://hsdesign.com/scanning/types/types.html] 1996. 8/4/00
Computer systems
Assignment 1 - Topic: scanners
Date:Student name:
Student number:
Tutor name:
Tutorial time:
Abstract
- Clear statement of the four criteria used in the report to assess the technology.
- Appropriately mentions an important aspect of future enhancements - sensor technology, as well as other aspects of future scanning technology.
- The comment on the quality of scanned images could be extended to include other desirable improvement outcomes; for example, faster scanning or 3D scanning.
Clear, well-organised Table of Contents.
Table of contents
Abstract | i | ||
1.0 | Introduction | 1 | |
2.0 | How scanners work | 2 | |
3.0 | Types of scanners | 2 | |
3.1 | Drum scanners | 2 | |
3.2 | Flatbed scanners | 2 | |
3.3 | Sheet-fed scanners | 2 | |
3.4 | Slide scanners | 3 | |
3.5 | Hand held scanners | 3 | |
4.0 | Scanner specifications | 3 | |
4.1 | Resolution | 3 | |
4.2 | Bit-depth | 4 | |
4.3 | Dynamic range | 4 | |
4.4 | Software | 4 | |
5.0 | Future developments | 5 | |
6.0 | Conclusion | 5 | |
7.0 | Reference list | 5 | |
Appendicies | 6 | ||
Appendix 1 Image Sensor Scanner | 8 | ||
Appendix 2 Frequently Used References | 9 | ||
Appendix 2.1 Scanner Tips | 10 | ||
Appendix 2.2 Scanners, Digital Cameras and Photo CDs | 11 | ||
Appendix 2.3 The PC Technology Guide | 12 |
States the purpose and outlines the content of the report succinctly at the start. Historical background is then provided.
1. Introduction
The purpose of this report is to survey the current state of scanner technology and to briefly discuss predicted advancements in the field.By examining a range of recently published journal articles, magazine articles and internet sites on the topic of scanners this report describes the main types of scanners in common use today and examines their performance in relation to four criteria: resolution, bit-depth, dynamic range and software. The report then considers the effect of further technological advances in these four areas, as well as the deployment of new sensor technology on the future development of scanners.
The first scanner, initially referred to as a 'reading machine', was developed in 1960 by Jacob Rabinow, a Russian born engineer. The device could scan printed material and then compare each character to a set of standards in a matrix using, for the first time, the "best match principle" to determine the original message (Blatner, Fleishman and Roth 1998, p.3). This reading machine was to form the basis for the development of current scanning, sorting and processing machines.
This level of detail should be placed in Section 2 'How Scanners Work'. Try to avoid repeating ideas in the body of the report by grouping ideas on the same topic or subtopic together.
Good comment - provides an overall picture.
An early improvement on the reading machine was the drum scanner. These scanners used a type of scanning technology called photomultiplier tubes (PMT). Drum scanners are still used in industry today because of the high quality images they produce. The development of smaller, more economical scanners such as desktop scanners and scanners for domestic use followed the drum scanner as the number of computer users increased and computer technology advanced.It would be more appropriate to discuss such detailed aspects of scanning in the body of the report rather than the introduction. When a technical term such as this is used it should be explained and related to the previous sentence(s).
Scanners can now capture images from a wide variety of two and three dimensional sources. These images are converted to digitised computer files that can be stored on a hard-drive or floppy disk. With the aid of specific software, these images can then be manipulated and enhanced by the user. It is now possible to deploy electronic acquisition to create an entire layout (including all graphic elements) from the same computer. This means manual stripping is no longer required (Scanners, digital cameras and photo CDs 2000). Scanners are considered an invaluable tool for adding graphics and text to documents and have been readily adopted by both business and domestic users.2. How scanners work
This paragraph presents a clear definition of how a scanner works. The student's understanding of the concept is evident because the definition has been clearly expressed in the student's own words and the sources of the definition have been acknowledged.
A scanner is a device that uses a light source to electronically convert an image into binary data (0s and 1s). This binary data can then be used to store the scanned image on a computer. A scanner recreates an image by using small electronic components referred to as the scanner's 'eyes' (Scanner tips 2000). The type of 'eyes' used in today's scanners are charge-coupled devices (CCD) and photomultiplier tubes (PMT). These electronic eyes measure the amount of light reflected from individual points on the page and translate it to digital signals that correspond to the brightness of each point (Englander 2000).To create a file on the computer that represents a colour image, the scanner divides the image into a grid with many individual points called pixels or picture elements (Scanner tips 2000). A scanning head, termed a row of 'eyes', reads over the grid and assigns a number to each pixel based on the main colour in that pixel, using green, blue and red. For example an aqua pixel would be saved as a number to represent the proportion of blue, green and red which represents the colour aqua (Scanners, digital cameras and photo CDs 2000).
3. Types of scanners
There are five main types of scanners in common use today: drum scanners, flatbed scanners, sheet-fed scanners, slide scanners, and hand held scanners.3.1 Drum scanners
Drum scanners were widely used in the past, however they are much less commonly used today due to advances in scanner technology. As a result of their expense, these machines are primarily used by professionals in industry, where they are considered important due to the high-end quality image they produce and because they use PMT technology which is more sophisticated than charge-coupled devices (CCDs) and contact image sensor's (CISs). Drum scanners are difficult to operate and technicians operate these scanners by placing the item to be scanned on a glass cylinder rotating at high speeds around the sensor (Sullivan 1996).3.2 Flatbed scanners
The student has used information from only one source for Sections 3.2, 3.3, 3.4, and 3.5. This has severely limited the content of these sections of the report.
The most popular scanners for general use are flatbed scanners. This type of scanner is highly versatile because it is able to scan flat objects as well as small three dimensional objects. Flat-bed scanners operate by placing the item to be scanned on a glass window while scanning heads move underneath it. A transparency adapter is used to scan transparent originals such as slides or x-rays, and an automatic document feeder is available for scanning large numbers of documents (Scanner tips 2000).3.3 Sheet-fed scanners
Sheet-fed scanners have grown in popularity in recent years, particularly for small office or domestic use as they are reasonably priced, can scan full-sized documents and are compact, requiring limited desk space (Scanner tips 2000). Most models of sheet-fed scanners have an inbuilt document feeder to overcome the problem of manually feeding one sheet of paper at a time. However the actual process or scanning with a sheet-fed scanner may result in distortion as the image to be scanned moves over the scanning heads (Scanner tips 2000). A further limitation of sheet-fed scanners is that they are unable to scan three dimensional objects.3.4 Slide scanners
This type of scanner is used to scan items such as slides that need careful handling during scanning. Unlike other scanners, the scanning heads in slide scanners do not reflect light from the image, but rather pass light through it. This enables these scanners to produce superior results without distortions caused by reflective light. To be able to scan small and detailed items, these scanners have a large number of eyes on the scanning head which produces a high quality result. Slide scanners tend to be more expensive and less versatile than flatbed and sheet-fed scanners as they are limited to only scanning slides and film. These scanners, however, are well suited to users requiring high quality scans of large numbers of slides (Scanner tips 2000).3.5 Hand held scanners
Hand held scanners are compact, portable scanners which are simply dragged across a page manually to capture an image. These scanners are easy to use and economical to purchase; however, their use is limited to text of up to four inches in diameter that does not require a high resolution. For this reason, hand held scanners are unsuitable for colour images. A further disadvantage of hand held scanners is that the user must have a steady hand when scanning or the resulting image will be distorted (Scanner tips 2000).4. Scanner specifications
The performance of a scanner can be examined in relation to four main criteria: resolution, bit-depth, dynamic range and software.4.1 Resolution
This paragraph provides a good description of this criteria in simple clear language.
Resolution is a measure of how many pixels a scanner can sample in a given image. It is used to describe the amount of detail in an image (Figeiredo, McIllree and Thomas 1996). Higher resolution scanners are generally more expensive and produce superior results as they have a greater capacity to capture detail. Scanners have two types of resolutions: optical resolution and interpolated resolution.It would be better to use a more recent reference here. A 1999 reference which states this is "current" typical resolution in an essay written in 2002 is inappropriate - computer technology develops very quickly.
This concept is poorly explained. The student needs to express the main point in more detail.
Optical resolution, or hardware resolution, is a measure of how many pixels a scanner can actually read. A current model desktop scanner typically has a resolution of 300 x 300 dots per inch (dpi) (Anderson 1999). This means that this scanner has a scanning head with 300 sensors per inch, so it can sample 300 dpi in one direction and 300 dpi in the other direction by stopping the scanning head 300 times per inch in both directions. Some scanners stop the scanning head more frequently as it moves down the page, giving an optical resolution of 300 x 600 dpi; however, scanning more frequently in one direction does not improve the result of the scan. The basic requirement for scanning detailed images and line art from photos or other printed originals is an optical resolution of 600 dpi. When scanning slides and negatives the minimum optical resolution is 1200 dpi.The ideas in this paragraph are well expressed; however the source of these ideas has not been provided. The student needs to provide references.
Interpolated resolution measures the number of pixels a scanner is able to predict. A scanner can turn a 300 x 300 dpi scan into a 600 x 600 dpi scan by looking in-between scanned pixels and guessing what that spot would have looked like if it had been scanned. This prediction is then used to insert new pixels in between the actual ones scanned. This technique is less precise than optical resolution; however it assists in improving the enlargement of scanned images.4.2 Bit depth
Bit depth refers to the amount of information that a scanner records for each pixel when converting an image to digital form. Scanners differ in the amount of data they record for each pixel within an image. The simplest kinds of scanners only record data related to black and white details and have a bit depth of 1 (Anderson 1999). The minimum bit depth required for scanning photographs and documents is 24-bits, while slides, negatives or transparencies need a scanner with at least 30-bits.Thus for a scanner to produce a high quality scan with colour, a higher bit depth is required. In general, current scanners have a bit depth of 24, which means that 8 bits of information can be collected for the three primary colours used in scanning; blue, red and green (Anderson 1999). This high resolution allows scanners to produce images close to photographic quality.
4.3 Dynamic range
The concept of 'dynamic range' has not been sufficiently explained here. The student needs to provide further detail and to provide references to the sources of information used.
Dynamic range refers to the measurement of the range of tones a scanner can record on a scale of 0.0 to 4.0, with 0.0 being perfect white and 4.0 being perfect black. Colour flat-bed scanners usually have a dynamic range of 2.4. A range of this measurement is unable to provide high quality colour scans. A dynamic range of 2.8 and 3.2 is suited to professional purposes and can be found in high-end scanners. An even higher dynamic range of 3.0 to 3.8 can be provided by drum scanners.4.4 Software
As in the previous paragraph, the concept has not been sufficiently explained. Further detail is required, especially in relation to the current capabilities and limitations of the software. References to the sources used are also required here.
A scanner, like any type of hardware, requires software. Typically the two most common pieces of software provided with scanners include optical character recognition (OCR) and image editing software. Optical character recognition software translates the information recorded in a scan, tiny dots, into a text file which can be edited. Image editing software allows the tones and colours of an image to be manipulated for better printing and display. Image editing also gives filters to apply special effects to scanned images5. Future developments
This sentence is too general. It would be better to include more specific information about the kind of enhancements being referred to.
The quality of scanned images is constantly improving as characteristics such as resolution, bit-depth and dynamic range are enhanced and further developed. More sophisticated image editing and optical character recognition software development is also resulting in superior quality scans. Future advances are expected to result in the incorporation of specialized scanners into other types of technology such as the recently developed digital camera. This device allows the user to take pictures of three-dimensional objects much like a regular camera, except that instead of using film, the objects are scanned by the camera in a similar process to the functioning of a flatbed scanner.This paragraph provides an appropriate amount of detail. Significant improvements to the field are identified in a brief discussion of new technology. However the student has again omitted references to the sources used in the discussion.
The relatively new area of sensor technology in the form of a contact image sensor (CIS) (see Appendix 1) is expected to improve the functionality of scanners and the quality of images as it "replaces the cumbersome optical reduction technique with a single row of sensors" (Grotta and Wiener 1998, p. 1). Developers have already been able to produce a CIS scanner which is thinner, lighter, more energy efficient and cheaper to manufacture than a traditional CCD base device. However, the quality of the scan is not as good as its counterparts. Further development of CIS technology is needed to improve image quality and colour, and to address the problem of a limited 300 or 600 dpi.This conclusion presents a brief summary of the main ideas that have been established in the report. Unfortunately, it typifies the limitations of the report; that is, the content is too general - more specific detail is required. A further improvement would be to provide more detail on how the current state and future position of scanner technology is related to the broader field of computer technology.
6. Conclusion
This report has identified five types of scanners currently available. Some are primarily used for professional purposes such as the drum scanner; others are used more broadly in the workplace and home such as flatbed scanners and to a lesser extent sheetfed scanners. Scanners for specialized purposes have also been identified such as slide and handheld scanners. The performance of these scanners is dependent upon their resolution, bit-depth, dynamic range and software. Scanners have improved significantly in recent years in terms of weight, size, price and speed, and the replacement of CCD technology with CIS technology is anticipated to produce further benefits to these areas as well as to scan quality. The impact of these improvements is expected to increase the accessibility of scanner technology to a wider range of users and its suitability for a wider range of purposes. In relation to this, the future of scanner technology seems to point to the convergence of different technologies. Specialized scanners are currently being incorporated into other types of technologies such as digital cameras, printers, and photocopiers. This can be expected to continue with other forms of technology in conjunction with further improvements to image quality, speed, price, size and weight. WARNING - do not use this reference list as a model!
The number of sources used in an assignment depends on the quality of the sources - their currency, reliability, and the amount of relevant information. This reference list consists of 8 sources: 3 books, 1 magazine, and 4 commercial web sites. It does not meet the requirements of the assignment description. One source is used for a number of sections in the report. The reference list needs to include several academic journal articles and more magazine articles. This would enable a wider range of opinions and ideas to be included. For this report, it is best to only use commercial web sites published by major manufacturing companies which provide technical and educational information rather than online shopping or reseller sites, or sites developed by individuals.
Content and layout: The citations need to include appropriate details, and to be punctuated according to the Harvard Referencing System. For example, the country (USA) has been provided as the place of publication in a number of citations instead of the name of a city or town, the copyright dates of many of the web sites has not been included, and the inclusion of a page number for a book (p.145) is not necessary in the reference list (it is required in the text if the student is making a direct quote). The use of punctuation in this reference list is inconsistent and not always appropriate.
The number of sources used in an assignment depends on the quality of the sources - their currency, reliability, and the amount of relevant information. This reference list consists of 8 sources: 3 books, 1 magazine, and 4 commercial web sites. It does not meet the requirements of the assignment description. One source is used for a number of sections in the report. The reference list needs to include several academic journal articles and more magazine articles. This would enable a wider range of opinions and ideas to be included. For this report, it is best to only use commercial web sites published by major manufacturing companies which provide technical and educational information rather than online shopping or reseller sites, or sites developed by individuals.
Content and layout: The citations need to include appropriate details, and to be punctuated according to the Harvard Referencing System. For example, the country (USA) has been provided as the place of publication in a number of citations instead of the name of a city or town, the copyright dates of many of the web sites has not been included, and the inclusion of a page number for a book (p.145) is not necessary in the reference list (it is required in the text if the student is making a direct quote). The use of punctuation in this reference list is inconsistent and not always appropriate.
7. Reference list
Anderson, D. The PC Guide. [http:www.pctechguide.com/18scanners.htm].Blatner, D., Fleishman, G. Roth, G. (1998) Real world scanning and halftones 2nd edition, Peachpit Press, USA.
Englander, I (2000). The Architecture of computer hardware and systems software. John Wiley, USA, p272.
Figeiredo, J. McIllree, J. Thomas, N. (1996) Introducing information technology 2nd edition Jacaranda Press, Singapore, p145.
Grotta, D. and Weiner, S. What's now ...What's next. [http://www.zdnet.com/pcmag/features/scanners98/intro.html] PC Magazines 20 October 1998. 8/4/00
Prepress, scanners, digital cameras and photoCDs. [http://www.prepress.pps.com/mem/lib/ptr/scanners.html] 1998. 6/4/00
Scansoft scanner tips [http://www.scannercentral.com/scanners/tips/tips1.asp] 2000.6/4/00
Sullivan. M. Types of scanners. [http://hsdesign.com/scanning/types/types.html] 1996. 8/4/00
Example of Citation :
One Author [5.6.1]
Brinkley, Alan. The Unfinished Nation. New York: Knopf, 1993.
Editor or Compiler [5.6.2]
- If the person named on the title page is the editor or compiler, rather than the author, add a comma then the abbreviation "ed." or "comp."
Carpenter, Allan, comp. Facts About the Cities. New York: Wilson, 1992. Kreider, Jan F., ed. Handbook of Heating, Ventilation, and Air Conditioning. Boca Raton: CRC, 1993.
Two or More Authors [5.6.4]
- List the names in the order they appear on the title page.
- Only the first author's name should be reversed: Last Name, First Name.
- Use a comma between the authors' names. Place a period after the last author's name.
Rowe, Richard, and Larry Jeffus. The Essential Welder: Gas Metal Arc Welding Classroom Manual. Albany: Delmar, 2000.
- If there are more than three authors, name only the first and add et al., or give all the names.
Randall, John E., Gerald R. Allen, and Roger C. Steene. Fishes of the Great Barrier Reef and Coral Sea. Honolulu: U of Hawaii P, 1997.
- If the persons named on the title page are editors or compilers, add a comma after the final name, then the abbreviation "eds." or "comps."
Clute, John, and Peter Nicholls, eds. The Encyclopedia of Science Fiction. New York: St. Martin's, 1993.
Reference :
Google.com
Anderson, D. The PC Guide. [http:www.pctechguide.com/18scanners.htm].
Blatner, D., Fleishman, G. Roth, G. (1998) Real world scanning and halftones 2nd edition, Peachpit Press, USA.
Englander, I (2000). The Architecture of computer hardware and systems software. John Wiley, USA, p272.
Figeiredo, J. McIllree, J. Thomas, N. (1996) Introducing information technology 2nd edition Jacaranda Press, Singapore, p145.
Grotta, D. and Weiner, S. What's now ...What's next. [http://www.zdnet.com/pcmag/features/scanners98/intro.html] PC Magazines 20 October 1998. 8/4/00
Prepress, scanners, digital cameras and photoCDs. [http://www.prepress.pps.com/mem/lib/ptr/scanners.html] 1998. 6/4/00
Scansoft scanner tips [http://www.scannercentral.com/scanners/tips/tips1.asp] 2000.6/4/00
Sullivan. M. Types of scanners. [http://hsdesign.com/scanning/types/types.html] 1996. 8/4/00
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วันจันทร์ที่ 19 กันยายน พ.ศ. 2554
วันอาทิตย์ที่ 18 กันยายน พ.ศ. 2554
Chapter3
Libraryof Congress Classification and Dewey Decimal Classification
The Library of Congress Classification (LCC) is a system of library classification developed by the Library of Congress. It is used by most research and academic libraries in the U.S. and several other countries. However, Dewey Decimal Classification (DDC) organizes books on library shelves in a specific and repeatable order that makes it easy to find any book and return it to its proper place. The system is used in 200,000 libraries in at least 135 countries. LCC is used in alphabets, but DDC is used in numbers.
Reference
Link
www.loc.gov - The Library of Congress Website
www.bl.uk - British Library
www.nlt.go.th - Thai National Library
library.spu.ac.th - Sripatum University Library
www.bic.moe.go.th - ASEAN Community Website
The Library of Congress Classification (LCC) is a system of library classification developed by the Library of Congress. It is used by most research and academic libraries in the U.S. and several other countries. However, Dewey Decimal Classification (DDC) organizes books on library shelves in a specific and repeatable order that makes it easy to find any book and return it to its proper place. The system is used in 200,000 libraries in at least 135 countries. LCC is used in alphabets, but DDC is used in numbers.
Reference
- ^ "Using the Library Catalogue - Library of Congress Classification". University of the Sunshine Coast, Qld, Australia. http://www.usc.edu.au/University/Library/Tutorials/Catalogue/Classification.htm. Retrieved 16 March 2011.
- ^ "Libraries Australia Cataloguing". National Library of Australia. http://www.nla.gov.au/librariesaustralia/cataloguing/index.html. Retrieved 16 March 2011.
- ^ "National Taiwan University Library Online Catalog". National Taiwan University. March 14, 2011. http://tulips.ntu.edu.tw/search/c. Retrieved March 14, 2011.
- ^ "e-Library OPAC link - A Division of SIRSI". Taipei Public Library. March 14, 2011. http://english.tpml.edu.tw/np.asp?ctNode=32829&mp=104022. Retrieved March 14, 2011. It can be seen that the Taipei public library use DDC for the English books after clicking Classifications Search.
www.loc.gov - The Library of Congress Website
www.bl.uk - British Library
www.nlt.go.th - Thai National Library
library.spu.ac.th - Sripatum University Library
www.bic.moe.go.th - ASEAN Community Website
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Chapter2(Information Literacy)
Information literacy
From Wikipedia, the free encyclopedia
Jump to: navigation, search
The examples and perspective in this article deal primarily with the United States and do not represent a worldwide view of the subject. Please improve this article and discuss the issue on the talk page. (June 2010) |
This article's citation style may be unclear. The references used may be made clearer with a different or consistent style of citation, footnoting, or external linking. (February 2008) |
The American Library Association's (ALA) Presidential Committee on Information Literacy, Final Report states, "To be information literate, a person must be able to recognize when information is needed and has the ability to locate, evaluate, and use effectively the needed information."[2] Information Literacy is important to all libraries, library users, and the general public.
Jeremy Shapiro & Shelley Hughes (1996) define information literacy as "A new liberal art that extends from knowing how to use computers and access information to critical reflection on the nature of information itself, its technical infrastructure and its social, cultural, and philosophical context and impact." [1]
Information Literacy is a most important part of education.Sunita,DLIS.It is also a vital part of university-level education (Association of College Research Libraries, 2007).
On May 28, 2009, U.S. California Governor Arnold Schwarzenneger posted an Executive Order establishing a California ICT Digital Literacy Leadership Council and an ICT Digital Advisory Committee.[3]
On October 1, 2009, U.S. President Barack Obama designated October 2009 "National Information Literacy Awareness Month" [4]
History of the concept
The phrase information literacy first appeared in print in a 1974 report by Paul G. Zurkowski, written on behalf of the National Commission on Libraries and Information Science. Zurkowski used the phrase to describe the "techniques and skills" known by the information literate "for utilizing the wide range of information tools as well as primary sources in molding information solutions to their problems".[5]
Subsequently a number of efforts were made to better define the concept and its relationship to other skills and forms of literacy. Although other educational goals, including traditional literacy, computer literacy, library skills, and critical thinking skills, were related to information literacy and important foundations for its development, information literacy itself was emerging as a distinct skill set and a necessary key to one's social and economic well-being in an increasingly complex information society.[6]
A seminal event in the development of the concept of information literacy was the establishment of the American Library Association's Presidential Committee on Information Literacy, whose 1989 final report outlined the importance of the concept. The report defined information literacy as the ability "to recognize when information is needed and have the ability to locate, evaluate, and use effectively the needed information" and highlighted information literacy as a skill essential for lifelong learning and the production of an informed and prosperous citizenry.
The committee outlined six principal recommendations: to "reconsider the ways we have organized information institutionally, structured information access, and defined information's role in our lives at home in the community, and in the work place"; to promote "public awareness of the problems created by information illiteracy"; to develop a national research agenda related to information and its use; to ensure the existence of "a climate conducive to students' becoming information literate"; to include information literacy concerns in teacher education; and to promote public awareness of the relationship between information literacy and the more general goals of "literacy, productivity, and democracy."[7]
The recommendations of the Presidential Committee led to the creation later that year of the National Forum on Information Literacy, a coalition of more than 90 national and international organizations.[8]
In 1998, the American Association of School Librarians and the Association for Educational Communications and Technology published Information Power: Building Partnerships for Learning, which further established specific goals for information literacy education, defining some nine standards in the categories of "information literacy", "independent learning", and "social responsibility".[9]
In 1999, SCONUL, the Society of College, National and University Libraries in the UK, published "The Seven Pillars of Information Literacy" [7] model, to "facilitate further development of ideas amongst practitioners in the field ... stimulate debate about the ideas and about how those ideas might be used by library and other staff in higher education concerned with the development of students' skills."[10] A number of other countries have developed information literacy standards since then.
In 2003, the National Forum on Information Literacy, together with UNESCO and the National Commission on Libraries and Information Science, sponsored an international conference in Prague with representatives from some twenty-three countries to discuss the importance of information literacy within a global context. The resulting Prague Declaration described information literacy as a "key to social, cultural and economic development of nations and communities, institutions and individuals in the 21st century" and declared its acquisition as "part of the basic human right of life long learning".[11]
On May 28, 2009, U.S. California Governor Arnold Schwarzenneger signed Executive Order S-06-09 establishing a California ICT Digital Literacy Leadership Council, which, in turn, is directed to establish an ICT Digital Literacy Advisory Committee. "The Leadership Council, in consultation with the Advisory Committee, shall develop an ICT Digital Literacy Policy, to ensure that California residents are digitally literate." The Executive Order states further: " ICT Digital Literacy is defined as using digital technology, communications tools and/or networks to access, manage, integrate, evaluate, create and communicate information in order to function in a knowledge-based economy and society..." The Governor directs "...The Leadership Council, in consultation with the Advisory Committee... [to] develop a California Action Plan for ICT Digital Literacy (Action Plan)." He also directs "The California Workforce Investment Board (WIB)... [to] develop a technology literacy component for its five-year Strategic State Plan." His Executive Order ends with the following: " I FURTHER REQUEST that the Legislature and Superintendent of Public Instruction consider adopting similar goals, and that they join the Leadership Council in issuing a "Call to Action" to schools, higher education institutions, employers, workforce training agencies, local governments, community organizations, and civic leaders to advance California as a global leader in ICT Digital Literacy".[12]
Information literacy rose to national consciousness in the U.S. with President Barack Obama's Proclamation designating October 2009 as National Information Literacy Awareness Month.[13] President Obama's Proclamation stated that "Rather than merely possessing data, we must also learn the skills necessary to acquire, collate, and evaluate information for any situation... Though we may know how to find the information we need, we must also know how to evaluate it. Over the past decade, we have seen a crisis of authenticity emerge. We now live in a world where anyone can publish an opinion or perspective, whether true or not, and have that opinion amplified within the information marketplace. At the same time, Americans have unprecedented access to the diverse and independent sources of information, as well as institutions such as libraries and universities, that can help separate truth from fiction and signal from noise."
His Proclamation ends with: "NOW, THEREFORE, I, BARACK OBAMA, President of the United States of America, by virtue of the authority vested in me by the Constitution and the laws of the United States, do hereby proclaim October 2009 as National Information Literacy Awareness Month. I call upon the people of the United States to recognize the important role information plays in our daily lives, and appreciate the need for a greater understanding of its impact."[14]
[edit] Specific aspects of information literacy (Shapiro and Hughes, 1996)
In "Information Literacy as a Liberal Art", Jeremy J. Shapiro and Shelley K. Hughes advocated a more holistic approach to information literacy education, one that encouraged not merely the addition of information technology courses as an adjunct to existing curricula, but rather a radically new conceptualization of "our entire educational curriculum in terms of information".Drawing upon Enlightenment ideals like those articulated by Enlightenment philosopher Condorcet, Shapiro and Hughes argued that information literacy education is "essential to the future of democracy, if citizens are to be intelligent shapers of the information society rather than its pawns, and to humanistic culture, if information is to be part of a meaningful existence rather than a routine of production and consumption".
To this end, Shapiro and Hughes outlined a "prototype curriculum" that encompassed the concepts of computer literacy, library skills, and "a broader, critical conception of a more humanistic sort", suggesting seven important components of a holistic approach to information literacy:
- Tool literacy, or the ability to understand and use the practical and conceptual tools of current information technology relevant to education and the areas of work and professional life that the individual expects to inhabit.
- Resource literacy, or the ability to understand the form, format, location and access methods of information resources, especially daily expanding networked information resources.
- Social-structural literacy, or understanding how information is socially situated and produced.
- Research literacy, or the ability to understand and use the IT-based tools relevant to the work of today's researcher and scholar.
- Publishing literacy, or the ability to format and publish research and ideas electronically, in textual and multimedia forms … to introduce them into the electronic public realm and the electronic community of scholars.
- Emerging technology literacy, or the ability to continuously adapt to, understand, evaluate and make use of the continually emerging innovations in information technology so as not to be a prisoner of prior tools and resources, and to make intelligent decisions about the adoption of new ones.
- Critical literacy, or the ability to evaluate critically the intellectual, human and social strengths and weaknesses, potentials and limits, benefits and costs of information technologies.[15]
[edit] National Forum on Information Literacy
[edit] Background
In 1983, the seminal report “A Nation at Risk: The Imperative for Educational Reform” declared that a “rising tide of mediocrity” was eroding the very foundations of the American educational system. It was, in fact, the genesis of the current educational reform movement within the United States. Ironically, the report did not include in its set of reform recommendations the academic and/or the public library as one of the key architects in the redesign of our K-16 educational system. This report and several others that followed, in conjunction with the rapid emergence of the information society, led the American Library Association (ALA) to convene a blue ribbon panel of national educators and librarians in 1987. The ALA Presidential Committee on Information Literacy was charged with the following tasks: (1) to define information literacy within the higher literacies and its importance to student performance, lifelong learning, and active citizenship; (2) to design one or more models for information literacy development appropriate to formal and informal learning environments throughout people's lifetimes; and (3) to determine implications for the continuing education and development of teachers. In the release of its Final Report in 1989, the American Library Association Presidential Committee on Information Literacy summarized in its opening paragraphs the ultimate mission of the National Forum on Information Literacy:“How our country deals with the realities of the Information Age will have enormous impact on our democratic way of life and on our nation's ability to compete internationally. Within America's information society, there also exists the potential of addressing many long-standing social and economic inequities. To reap such benefits, people--as individuals and as a nation--must be information literate. To be information literate, a person must be able to recognize when information is needed and have the ability to locate, evaluate, and use effectively the needed information. Producing such a citizenry will require that schools and colleges appreciate and integrate the concept of information literacy into their learning programs and that they play a leadership role in equipping individuals and institutions to take advantage of the opportunities inherent within the information society. Ultimately, information literate people are those who have learned how to learn. They know how to learn because they know how knowledge is organized, how to find information, and how to use information in such a way that others can learn from them. They are people prepared for lifelong learning, because they can always find the information needed for any task or decision at hand."Acknowledging that the major obstacle to people becoming information literate citizens, who are prepared for lifelong learning, "is a lack of public awareness of the problems created by information illiteracy," the report recommended the formation of a coalition of national organizations to promote information literacy.”
Thus, in 1989, the A.L.A. Presidential Committee established the National Forum on Information Literacy, a volunteer network of organizations committed to raising public awareness on the importance of information literacy to individuals, to our diverse communities, to our economy, and to engaged citizenship participation.
[edit] The forum today
Since 1989, the National Forum on Information Literacy has evolved steadily under the leadership of its first chair, Dr. Patricia Senn Breivik. Today, the Forum represents over 90 national and international organizations, all dedicated to mainstreaming the philosophy of information literacy across national and international landscapes, throughout every educational, domestic, and workplace venue.Although the initial intent of the Forum was to raise public awareness and support on a national level, over the last several years, the National Forum on Information Literacy has made significant strides internationally in promoting the importance of integrating information literacy concepts and skills throughout all educational, governmental, and workforce development programs. For example, the National Forum co-sponsored with UNESCO and IFLA several “experts meetings”, resulting in the Prague Declaration (2003) and the Alexandria Proclamation (2005) each underscoring the importance of information literacy as a basic fundamental human right and lifelong learning skill.
In the United States, however, information literacy skill development has been the exception and not the rule, particularly as it relates to the integration of information literacy practices within our educational and workforce development infrastructures. In a 2000 peer reviewed publication, Nell K. Duke, found that students in first grade classrooms were exposed to an average of 3.6 minutes of informational text in a school day.[17] In October, 2006, the first national Summit on Information Literacy brought together well over 100 representatives from education, business, and government to address America’s information literacy deficits as a nation currently competing in a global marketplace. This successful collaboration was sponsored by the National Forum on Information Literacy, Committee for Economic Development, Educational Testing Service, the Institute for a Competitive Workforce, and National Education Association (NEA). The Summit was held at NEA headquarters in Washington, D.C.
A major outcome of the Summit was the establishment of a national ICT literacy policy council to provide leadership in creating national standards for ICT literacy in the United States.
As stated on the Forum’s Main Web page, it recognizes that achieving information literacy has been much easier for those with money and other advantages. For those who are poor, non-White, older, disabled, living in rural areas or otherwise disadvantaged, it has been much harder to overcome the digital divide. A number of the Forum’s members address the specific challenges for those disadvantaged. For example, The Children’s Partnership advocates for the nearly 70 million children and youth in the country, many of whom are disadvantaged. The Children’s Partnership currently runs three programs, two of which specifically address the needs of those with low-incomes: Online content for Low-Income and Underserved Americans Initiative, and the California Initiative Program. Another example is the National Hispanic Council on Aging which is:
Dedicated to improving the quality of life for Latino elderly, families, and communities through advocacy, capacity and institution building, development of educational materials, technical assistance, demonstration projects, policy analysis and research (National Hispanic Council on Aging, and, Mission Statement section).In the final analysis, the National Forum on Information Literacy will continue to work closely with educational, business, and non-profit organizations in the U.S. to promote information literacy skill development at every opportunity, particularly in light of the ever growing social, economic, and political urgency of globalization, prompting us to re-energize our promotional and collaborative efforts here at home.
[edit] Bibliography
Prague Declaration: “Towards an Information Literate Society” - http://www.infolit.org/2003.htmlAlexandria Proclamation: A High Level International Colloquium on Information Literacy and Lifelong Learning, http://www.infolit.org/2005.html
2006 Information Literacy Summit: American Competitiveness in the Internet Age http://www.infolit.org/reports.html
1989 Presidential Committee on Information Literacy: Final Report http://www.ala.org/ala/mgrps/divs/acrl/publications/whitepapers/presidential.cfm
1983 A Nation at Risk: The Imperative for Educational Reform http://www.ed.gov/pubs/NatAtRisk/index.html
Gibson, C. (2004). Information literacy develops globally: The role of the national forum on information literacy. Knowledge Quest. http://www.ala.org/ala/aasl/aaslpubsandjournals/kqweb/kqarchives/vol32/324TOC2.cfm
Breivik P.S. and Gee, E.G. (2006). Higher education in the internet age: Libraries creating a strategic edge. Westport,CT: Greenwood Publishing
[edit] Educational schemata
[edit] One view of the components of information literacy
Based on the Big6 by Mike Eisenberg and Bob Berkowitz.http://big6.com/
- The first step in the Information Literacy strategy is to clarify and understand the requirements of the problem or task for which information is sought. Basic questions asked at this stage:
- What is known about the topic?
- What information is needed?
- Where can the information be found?
- Locating: The second step is to identify sources of information and to find those resources. Depending upon the task, sources that will be helpful may vary. Sources may include books, encyclopedias, maps, almanacs, etc. Sources may be in electronic, print, social bookmarking tools, or other formats.
- Selecting/analyzing: Step three involves examining the resources that were found. The information must be determined to be useful or not useful in solving the problem. The useful resources are selected and the inappropriate resources are rejected.
- Organizing/synthesizing: It is in the fourth step this information which has been selected is organized and processed so that knowledge and solutions are developed. Examples of basic steps in this stage are:
- Discriminating between fact and opinion
- Basing comparisons on similar characteristics
- Noticing various interpretations of data
- Finding more information if needed
- Organizing ideas and information logically
- Creating/presenting: In step five the information or solution is presented to the appropriate audience in an appropriate format. A paper is written. A presentation is made. Drawings, illustrations, and graphs are presented.
- Evaluating: The final step in the Information Literacy strategy involves the critical evaluation of the completion of the task or the new understanding of the concept. Was the problem solved? Was new knowledge found? What could have been done differently? What was done well?
Differentiated instruction and the Big6 appear to be made for each other. While it seems as though all children will be on the same Big6 step at the same time during a unit of instruction, there is no reason students cannot work through steps at an individual pace. In addition, the Big 6 process allows for seamless differentiation by interest (Jansen, 2009, p.32).A number of weaknesses in the Big6 approach have been highlighted by Philip Doty:
This approach is problem-based, is designed to fit into the context of Benjamin Bloom’s taxonomy of cognitive objectives, and aims toward the development of critical thinking. While the Big6 approach has a great deal of power, it also has serious weaknesses. Chief among these are the fact that users often lack well-formed statements of information needs, as well as the model’s reliance on problem-solving rhetoric. Often, the need for information and its use are situated in circumstances that are not as well-defined, discrete, and monolithic as problems (Doty, 2003).Eisenberg (2004) has recognized that there are a number of challenges to effectively applying the Big6 skills, not the least of which is information overload which can overwhelm students. Part of Eisenberg’s solution is for schools to help students become discriminating users of information.
[edit] Another conception of information literacy
This conception, used primarily in the library and information studies field, and rooted in the concepts of library instruction and bibliographic instruction, is the ability "to recognize when information is needed and have the ability to locate, evaluate and use effectively the needed information" (Presidential Committee on Information Literacy. 1989, p. 1). In this view, information literacy is the basis for life-long learning.In the publication Information power: Building partnerships for learning (AASL and AECT, 1998), three categories, nine standards, and twenty-nine indicators are used to describe the information literate student. The categories and their standards are as follows:
Category 1: Information Literacy
Standards:
1.The student who is information literate accesses information efficiently and effectively.
2.The student who is information literate evaluates information critically and competently.
3.The student who is information literate uses information accurately and creatively.
Category 2: Independent Learning
Standards:
1.The student who is an independent learner is information literate and pursues information related to personal interests.
2.The student who is an independent learner is information literate and appreciates literature and other creative expressions of information.
3.The student who is an independent learner is information literate and strives for excellence in information seeking and knowledge generation.
Category 3: Social Responsibility
Standards:
1.The student who contributes positively to the learning community and to society is information literate and recognizes the importance of information to a democratic society.
2.The student who contributes positively to the learning community and to society is information literate and practices ethical behavior in regard to information and information technology.
3.The student who contributes positively to the learning community and to society is information literate and participates effectively in groups to pursue and generate information. (AASL and AECT, 1998)
Since information may be presented in a number of formats, the term "information" applies to more than just the printed word. Other literacies such as visual, media, computer, network, and basic literacies are implicit in information literacy.
Many of those who are in most need of information literacy are often amongst those least able to access the information they require:
Minority and at-risk students, illiterate adults, people with English as a second language, and economically disadvantaged people are among those most likely to lack access to the information that can improve their situations. Most are not even aware of the potential help that is available to them. (Presidential Committee on Information Literacy. 1989, para. 7)As the Presidential Committee report points out, members of these disadvantaged groups are often unaware that libraries can provide them with the access, training and information they need. In Osborne (2004) many libraries around the country are finding numerous ways to reach many of these disadvantaged groups by discovering their needs in their own environments (including prisons) and offering them specific services in the libraries themselves.
[edit] Evolution of the economy
The change from an economy based on labor and capital to one based on information requires information literate workers who will know how to interpret information.Barner's (1996) study of the new workplace indicates significant changes will take place in the future:
- The work force will become more decentralized
- The work force will become more diverse
- The economy will become more global
- The use of temporary workers will increase
[edit] Effect on education
The rapidly evolving information landscape means that education methods and practices must evolve and adapt accordingly. Information literacy must become a key focus of educational institutions at all levels. This requires a commitment to lifelong learning and an ability to seek out and identify innovations that will be needed to keep pace with or outpace changes.[18] Educational methods and practices, within our increasingly information-centric society, must facilitate and enhance a student's ability to harness the power of information. Key to harnessing the power of information is the ability to evaluate information, to ascertain among other things its relevance, authenticity and modernity. The information evaluation process is crucial life skill and a basis for lifelong learning.[19] Evaluation consists of several component processes including metacognition, goals, personal disposition, cognitive development, deliberation, and decision-making. This is both a difficult and complex challenge and underscores the importance of being able to think critically.Critical thinking is an important educational outcome for students.[19] Education institutions have experimented with several strategies to help foster critical thinking, as a means to enhance information evaluation and information literacy among students. When evaluating evidence, students should be encouraged to practice formal argumentation.[20] Debates and formal presentations must also be encouraged to analyze and critically evaluate information.
Education professionals must underscore the importance of high information quality. Students must be trained to distinguish between fact and opinion. They must be encouraged to use cue words such as "I think" and "I feel" to help distinguish between factual information and opinions. Information related skills that are complex or difficult to comprehend must be broken down into smaller parts. Another approach would be to train students in familiar contexts. Education professionals should encourage students to examine "causes" of behaviors, actions and events. Research shows that people evaluate more effectively if causes are revealed, where available.[18] Such initiatives would aid educators help people become more Information Literate. As a society, we must critically evaluate information to establish a public demand for high information quality.
Because information literacy skills are vital to future success:
- Information literacy skills must be taught in the context of the overall process.
- Instruction in information literacy skills must be integrated into the curriculum and reinforced both within and outside of the educational setting.
[edit] Education in the USA
[edit] Standards
National content standards, state standards, and information literacy skills terminology may vary, but all have common components relating to information literacy.Information literacy skills are critical to several of the National Education Goals outlined in the Goals 2000: Educate America Act, particularly in the act's aims to increase "school readiness", "student achievement and citizenship", and "adult literacy and lifelong learning".[21] Of specific relevance are the "focus on lifelong learning, the ability to think critically, and on the use of new and existing information for problem solving", all of which are important components of information literacy.[22]
In 1998, the American Association of School Librarians and the Association for Educational Communications and Technology published "Information Literacy Standards for Student Learning", which identified nine standards that librarians and teachers in K-12 schools could use to describe information literate students and define the relationship of information literacy to independent learning and social responsibility:
- Standard One: The student who is information literate accesses information efficiently and effectively.
- Standard Two: The student who is information literate evaluates information critically and competently.
- Standard Three: The student who is information literate uses information accurately and creatively.
- Standard Four: The student who is an independent learner is information literate and pursues information related to personal interests.
- Standard Five: The student who is an independent learner is information literate and appreciates literature and other creative expressions of information.
- Standard Six: The student who is an independent learner is information literate and strives for excellence in information seeking and knowledge generation.
- Standard Seven: The student who contributes positively to the learning community and to society is information literate and recognizes the importance of information to a democratic society.
- Standard Eight: The student who contributes positively to the learning community and to society is information literate and practices ethical behavior in regard to information and information technology.
- Standard Nine: The student who contributes positively to the learning community and to society is information literate and participates effectively in groups to pursue and generate information.[9]
In 2000, the Association of College and Research Libraries (ACRL), a division of the American Library Association (ALA), released "Information Literacy Competency Standards for Higher Education", describing five standards and numerous performance indicators considered best practices for the implementation and assessment of postsecondary information literacy programs. The five standards are:
- Standard One: The information literate student determines the nature and extent of the information needed.
- Standard Two: The information literate student accesses needed information effectively and efficiently.
- Standard Three: The information literate student evaluates information and its sources critically and incorporates selected information into his or her knowledge base and value system.
- Standard Four: The information literate student, individually or as a member of a group, uses information effectively to accomplish a specific purpose.
- Standard Five: The information literate student understands many of the economic, legal, and social issues surrounding the use of information and accesses and uses information ethically and legally.[24]
[edit] K-12 education restructuring
Educational reform and restructuring make information literacy skills a necessity as students seek to construct their own knowledge and create their own understandings. Today instruction methods have changed drastically from the mostly one-directional teacher-student model, to a more collaborative approach where the students themselves feel empowered. Much of this challenge is now being informed by the American Association of School Librarians that published new standards for student learning in 2007.Within the K-12 environment, effective curriculum development is vital to imparting Information Literacy skills to students. Given the already heavy load on students, efforts must be made to avoid curriculum overload.[25] Eisenberg strongly recommends adopting a collaborative approach to curriculum development among classroom teachers, librarians, technology teachers, and other educators. Staff must be encouraged to work together to analyze student curriculum needs, develop a broad instruction plan, set information literacy goals, and design specific unit and lesson plans that integrate the information skills and classroom content. These educators can also collaborate on teaching and assessment duties
Educators are selecting various forms of resource-based learning (authentic learning, problem-based learning and work-based learning) to help students focus on the process and to help students learn from the content. Information literacy skills are necessary components of each. Within a school setting, it is very important that a students' specific needs as well as the situational context be kept in mind when selecting topics for integrated information literacy skills instruction The primary goal should be to provide frequent opportunities for students to learn and practice information problem solving.[25] To this extent, it is also vital to facilitate repetition of information seeking actions and behavior. The importance of repetition in information literacy lesson plans cannot be underscored, since we tend to learn through repetition. A students’ proficiency will improve over time if they are afforded regular opportunities to learn and to apply the skills they have learnt.
The process approach to education is requiring new forms of student assessment. Students demonstrate their skills, assess their own learning, and evaluate the processes by which this learning has been achieved by preparing portfolios, learning and research logs, and using rubrics.
[edit] Efforts in K-12 education
Information literacy efforts are underway on individual, local, and regional bases.Many states have either fully adopted AASL [8][9] information literacy standards or have adapted them to suit their needs.[18] States such as Oregon (OSLIS, 2009) [10] increasing rely on these guidelines for curriculum development and setting information literacy goals. Virginia,[26] on the other hand, chose to undertake a comprehensive review, involving all relevant stakeholders and formulate it own guidelines and standards for information literacy. At an international level, two framework documents jointly produced by UNESCO and the IFLA (International Federation of Library Associations and Institutions) developed two framework documents that laid the foundations in helping define the educational role to be played by school libraries: the School library manifesto (1999),.[27]
Another immensely popular approach to imparting information literacy is the Big6 set of skills.[25] Eisenberg claims that the Big6 is the most widely used model in K-12 education. This set of skills seeks to articulate the entire information seeking life cycle. The Big6 is made up of six major stages and two sub-stages under each major stages. It defines the six steps as being: task definition, information seeking strategies, location and access, use of information, synthesis, and evaluation. Such approaches seek to cover the full range of information problem-solving actions that a person would normally undertake, when faced with an information problem or with making a decision based on available resources.
Imaginative Web based information literacy tutorials such as TILT[28] are being created and integrated with curriculum areas, or being used for staff development purposes.
"Library media programs" are fostering information literacy by integrating the presentation of information literacy skills with curriculum at all grade levels. But information literacy efforts are not being limited to the library field, but are also being employed by regional educational consortia.
[edit] Efforts in higher education
Information literacy instruction in higher education can take a variety of forms: stand-alone courses or classes, online tutorials, workbooks, course-related instruction, or course-integrated instruction. One attempt in the area of physics was published in 2009.[29]State-wide university systems and individual colleges and universities are undertaking strategic planning to determine information competencies, to incorporate instruction in information competence throughout the curriculum and to add information competence as a graduation requirement for students. The six regional accreditation boards have added information literacy to their standards,[30] Librarians often are required to teach the concepts of information literacy during "one shot" classroom lectures. There are also credit courses offered by academic librarians to prepare college students to become information literate.
Academic library programs are preparing faculty to facilitate their students' mastery of information literacy skills so that the faculty can in turn provide information literacy learning experiences for the students enrolled in their classes.
[edit] Technology
Information Technology is the great enabler. It provides, for those who have access to it, an extension of their powers of perception, comprehension, analysis, thought, concentration, and articulation through a range of activities that include: writing, visual images, mathematics, music, physical movement, sensing the environment, simulation, and communication (Carpenter, 1989, p. 2).Technology, in all of its various forms, offers users the tools to access, manipulate, transform, evaluate, use, and present information.
Technology in schools includes computers, televisions, video cameras, video editing equipment, and TV studios.
Two approaches to technology in K-12 schools are technology as the object of instruction approach, and technology as the tool of instruction approach.
Schools are starting to incorporate technology skills instruction in the context of information literacy skills. This is called technology information literacy
Technology is changing the way higher education institutions are offering instruction. The use of the Internet is being taught in the contexts of subject area curricula and the overall information literacy process.
There is some empirical indication that students who use technology as a tool may become better at managing information, communicating, and presenting ideas.
[edit] Distance education
Now that information literacy has become a part of the core curriculum at many post-secondary institutions, it is incumbent upon the library community to be able to provide information literacy instruction in a variety of formats, including online learning and distance education. The Association of College and Research Libraries (ACRL) addresses this need in its Guidelines for Distance Education Services (2000):“Library resources and services in institutions of higher education must meet the needs of all their faculty, students, and academic support staff, wherever these individuals are located, whether on a main campus, off campus, in distance education or extended campus programs—or in the absence of a campus at all, in courses taken for credit or non-credit; in continuing education programs; in courses attended in person or by means of electronic transmission; or any other means of distance education.”
Within the e-learning and distance education worlds, providing effective information literacy programs brings together the challenges of both distance librarianship and instruction. With the prevalence of course management systems such as WebCT and Blackboard, library staff are embedding information literacy training within academic programs and within individual classes themselves (Presti, 2002).
[edit] Global Information Literacy
The International Federation of Library Associations and Institutions (IFLA) has established an Information Literacy Section. The Section has, in turn, developed and mounted an Information Literacy Resources Directory, called InfoLit Global. Librarians, educators and information professionals may self-register and upload information-literacy-related materials (IFLA, Information Literacy Section, n.d.) According to the IFLA website, "The primary purpose of the Information Literacy Section is to foster international cooperation in the development of information literacy education in all types of libraries and information institutions." http://www.ifla.org/en/about-information-literacySee also article on library instruction, considered by some a more general topic.
[edit] Information Literacy Assessment Tools
- iCritical Thinking, former variation known as iSkills, and before that ICT Literacy Assessment, from the Educational Testing Service (ETS)
- Standardized Assessment of Information Literacy Skills (Project SAILS) developed and maintained at Kent State University in Ohio
- Information Literacy Test (ILT) developed collaboratively by the James Madison Center for Assessment and Research Studies and JMU libraries
- Research Readiness Self-Assessment (RRSA) from Central Michigan University originally designed by Lana V. Ivanitskaya, Ph.D. and Anne Marie Casey, A.M.L.S. and developed in collaboration with many of their colleagues.
- More Assessments of Information Literacy
- WASSAIL, an open-source assessment platform for storing questions and answers, producing tests, and generating reports.
[edit] Notes
- ^ a b http://www.educause.edu/pub/er/review/reviewarticles/31231.html
- ^ http://www.ala.org/ala/mgrps/divs/acrl/publications/whitepapers/presidential.cfm
- ^ http://gov.ca.gov/news.php?id=12393
- ^ http://www.whitehouse.gov/assets/documents/2009literacy_prc_rel.pdf
- ^ Paul G. Zurkowski, "The Information Service Environment: Relationships and Priorities", National Commission on Libraries and Information Science, Nov 1974, ED100391.
- ^ Carol Collier Kulthau, "Information Skills for an Information Society: A Review of Research", ERIC, Dec 1987, ED297740.
- ^ "Presidential Committee on Information Literacy: Final Report", 10 Jan 1989.
- ^ National Forum on Information Literacy
- ^ a b American Association of School Librarians and the Association for Educational Communications and Technology, Information Literacy Standards for Student Learning", 1998.
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- ^ Information Literacy Meeting of Experts, "The Prague Declaration – 'Toward an Information Literate Society'",Sept 2003.
- ^ [2]
- ^ National Information Literacy Awareness Month "[3]"
- ^ "[4]"
- ^ Shapiro, Jeremy J. and Shelley K. Hughes, "Information Literacy as a Liberal Art", Educom Review, 31:2 (Mar/Apr 1996).
- ^ Ira Shor, "What is Critical Literacy?", The Journal of Pedagogy, Pluralism, & Practice, 4:1 (Fall 1999).
- ^ Duke, N. K. (2000). 3.6 minutes per day: The scarcity of informational texts in first grade. Reading Research Quarterly, 35, 202-224
- ^ a b c Eisenberg, B. M., Lowe, C., & Spitzer, K. (2004). Information Literacy: Essential Skills for the Information Age. 2nd. edition. Libraries Unlimited.
- ^ a b Fitzgerald, M. A. (1999). Evaluating information: An information literacy challenge. School Library Media Research, 2. Retrieved from http://www.ala.org/ala/mgrps/divs/aasl/aaslpubsandjournals/slmrb/slmrcontents/volume21999/ALA_print_layout_1_202785_202785.cfm
- ^ Kuhn, D. (1991). The skills of argument. New York: Cambridge University Press.
- ^ United States Congress, "Goals 2000: Educate America Act", Jan 1994, H.R.1804.
- ^ Eric Plotnick, "Information Literacy", ERIC Digests, Feb 1999, ED427777.
- ^ American Association of School Librarians, "Standards for the 21st Century Learner", 2007.
- ^ Association of College and Research Libraries, "Information Literacy Competency Standards for Higher Education", Jan 2000.
- ^ a b c Eisenberg, B. M. (2008). Information Literacy: Essential Skills for the Information Age. Journal of Library & Information Technology, Vol. 28, No. 2, March 2008, pp. 39-47, Retrieved July 10, 2009, from :http://publications.drdo.gov.in/ojs/index.php/djlit/article/viewFile/288/182
- ^ Blake, P. (2006). Restructuring Relationships in Virginia. Change, 38(1), 26-33. Retrieved July 10, 2009, from Alt-Press Watch (APW). (Document ID: 975373301).
- ^ Endrizzi, L. (2006). Information Literacy. Lettre d’information - VST, n° 17 – April 2006 , Retrieved July 10, 2009, from http://www.inrp.fr/vst/LettreVST/english/pdf/april2006_EN.pdf,
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- ^ Miller, C. W.; M. D. Chabot, and T. C. Messina (2009). "A student's guide to searching the literature using online databases". Am. J. Phys. 77 (12): 1112. doi:10.1119/1.3213525.
- ^ [6].
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