Sunday, September 27, 2009
Thursday, September 24, 2009
Reading for week # 5
1) Data Compression. http://en.wikipedia.org/wiki/Data_compression
The first reading talks about Data compression. Data compression is the process of encoding information using fewer bits. We use data compression to make sure that both sender and receiver understand the encoding schema. Data compression has advantage reduce the consumption of expensive resources. But it also has disadvantage; compressed data must be decompressed to be used, and this extra processing may be detrimental to some applications. Then it explains what the different between Lossless (sender's data more concisely without error.)Versus lossy compression (guided by research on how people perceive the data in question)
2) Data compression basics (long documents, but covers all basics and beyond): http://dvd-hq.info/data_compression_1.php
This reading has the same information that the first reading has about data compression , but the second reading explain it more by using images and examples.
3) Edward A. Galloway, “Imaging Pittsburgh: Creating a shared gateway to digital image collections of the Pittsburgh region” First Monday 9:5 2004 http://www.firstmonday.org/issues/issue9_5/galloway/index.html
This article talks about "Imaging Pittsburgh" .The purpose of this project is to create a single Web gateway for the public to access thousands of visual images from photographic collections held by the Archives Service Center of the University of Pittsburgh. The benefit of this project is to allow the users working with the collections as a group. And let them obtain a wider picture of events and people. The user of the gateway can Conduct a keyword search across all the image collections; Browse images within any given collection; Read about the collections and their contents, including provenance, date span, and coverage; Explore the image collections by time, place and theme; and Order image reproductions.
4) Paula L. Webb, YouTube and libraries: It could be a beautiful relationship C&RL News, June 2007 Vol. 68, No. 6 0 http://www.ala.org/ala/acrl/acrlpubs/crlnews/backissues2007/jun07/youtube.cfm
I tried to open this link but it does not open with me. anyone has the same problem ?
The first reading talks about Data compression. Data compression is the process of encoding information using fewer bits. We use data compression to make sure that both sender and receiver understand the encoding schema. Data compression has advantage reduce the consumption of expensive resources. But it also has disadvantage; compressed data must be decompressed to be used, and this extra processing may be detrimental to some applications. Then it explains what the different between Lossless (sender's data more concisely without error.)Versus lossy compression (guided by research on how people perceive the data in question)
2) Data compression basics (long documents, but covers all basics and beyond): http://dvd-hq.info/data_compression_1.php
This reading has the same information that the first reading has about data compression , but the second reading explain it more by using images and examples.
3) Edward A. Galloway, “Imaging Pittsburgh: Creating a shared gateway to digital image collections of the Pittsburgh region” First Monday 9:5 2004 http://www.firstmonday.org/issues/issue9_5/galloway/index.html
This article talks about "Imaging Pittsburgh" .The purpose of this project is to create a single Web gateway for the public to access thousands of visual images from photographic collections held by the Archives Service Center of the University of Pittsburgh. The benefit of this project is to allow the users working with the collections as a group. And let them obtain a wider picture of events and people. The user of the gateway can Conduct a keyword search across all the image collections; Browse images within any given collection; Read about the collections and their contents, including provenance, date span, and coverage; Explore the image collections by time, place and theme; and Order image reproductions.
4) Paula L. Webb, YouTube and libraries: It could be a beautiful relationship C&RL News, June 2007 Vol. 68, No. 6 0 http://www.ala.org/ala/acrl/acrlpubs/crlnews/backissues2007/jun07/youtube.cfm
I tried to open this link but it does not open with me. anyone has the same problem ?
Muddiest point for week #4
Why most of people use Operational database instead of other type of databases (analytical database and Data warehouse). And what is the difference between them?
Saturday, September 19, 2009
Friday, September 18, 2009
Reading for week #4
Database:
This article talks about Databases which is an integrated collection of logically related records or files consolidated into a common pool that provides data for many applications and it describe the types of databases which are Relational model ( most commonly used),Hierarchical model and Network model. Moreover it defines Database management systems .At the end of the article, talks about Storage structures, Transactions and concurrency, Locking, Applications and how all of these databases can take advantage of indexing. This article helps me a lot to understand more about database because I will have an assignment in other LIS class about databases.
Metadata:
This research talks about Metadata. Gilliland defines, describes and talks about different kind of metadata. Metadata is data about data. There are 4 types of metadata which are Administrative, Descriptive, and Preservation, Technical, and use metadata. Moreover Gilliland mentions the Attributes and Characteristics of Metadata and gives examples of them. Then at the end of the research, he talks about why is metadata is important. This reading let me understand more what does metadata mean, in the beginning of this semester I did not sure what does metadata mean and when I can use this world.
The Dublin core data model:
I did read this article but I still not understand what does Dublin core data model mean and what does it use for? Is it a language used to describe a metadata and is library use this kind of model. I am still not sure what this article about.
Database:
This article talks about Databases which is an integrated collection of logically related records or files consolidated into a common pool that provides data for many applications and it describe the types of databases which are Relational model ( most commonly used),Hierarchical model and Network model. Moreover it defines Database management systems .At the end of the article, talks about Storage structures, Transactions and concurrency, Locking, Applications and how all of these databases can take advantage of indexing. This article helps me a lot to understand more about database because I will have an assignment in other LIS class about databases.
Metadata:
This research talks about Metadata. Gilliland defines, describes and talks about different kind of metadata. Metadata is data about data. There are 4 types of metadata which are Administrative, Descriptive, and Preservation, Technical, and use metadata. Moreover Gilliland mentions the Attributes and Characteristics of Metadata and gives examples of them. Then at the end of the research, he talks about why is metadata is important. This reading let me understand more what does metadata mean, in the beginning of this semester I did not sure what does metadata mean and when I can use this world.
The Dublin core data model:
I did read this article but I still not understand what does Dublin core data model mean and what does it use for? Is it a language used to describe a metadata and is library use this kind of model. I am still not sure what this article about.
Wednesday, September 16, 2009
Sunday, September 13, 2009
Friday, September 11, 2009
Readng week #3
Reading week # 3
Machtelt Garrels. “Introduction to Linux: A Hands on Guide”
This reading talks about Linux and the history of Linux and how it started. There was no operating system(like Unix) which was Simple and elegant, Written in the C programming language instead of in assembly code, and able to recycle code. Then it talks about how Linux is difficult. It says it depends on the person. Who used UNIX before says no it is not difficult, but for other it might difficult. Linux has a good future because it provides more than the operating system: there is an entire infrastructure supporting the chain of effort of creating an operating system, of making and testing programs for it, of bringing everything to the users, of supplying maintenance, updates and support and customizations, etcetera.
http://www.kernelthread.com/mac/osx/ http://en.wikipedia.org/wiki/Mac_OS_X
I have never used Mac. And this reading let me know many things about it. I used to think about Mac the same things that other people think about Mac: Macs are good only for graphics/media work, Macs suck for hackers, there is very little software for the Mac, and Macs are overpriced/not worth the price. But after reading these websites, I have more information about it and I think I might buy a Mac computer in the future.
Paul Thurott “An Update on the Windows Roadmap”
This website talks about windows (Windows XP, Windows Vista, and Windows 7). And it talks about the future of windows Xp and if people can get this operating system if they want it. Then it explains why windows vista is a very important operating system. The main reason that makes them creates widows vista is to improved security. Then it talks about the future of operating system and what Microsoft windows going to release in the future (they called it windows7)
Machtelt Garrels. “Introduction to Linux: A Hands on Guide”
This reading talks about Linux and the history of Linux and how it started. There was no operating system(like Unix) which was Simple and elegant, Written in the C programming language instead of in assembly code, and able to recycle code. Then it talks about how Linux is difficult. It says it depends on the person. Who used UNIX before says no it is not difficult, but for other it might difficult. Linux has a good future because it provides more than the operating system: there is an entire infrastructure supporting the chain of effort of creating an operating system, of making and testing programs for it, of bringing everything to the users, of supplying maintenance, updates and support and customizations, etcetera.
http://www.kernelthread.com/mac/osx/ http://en.wikipedia.org/wiki/Mac_OS_X
I have never used Mac. And this reading let me know many things about it. I used to think about Mac the same things that other people think about Mac: Macs are good only for graphics/media work, Macs suck for hackers, there is very little software for the Mac, and Macs are overpriced/not worth the price. But after reading these websites, I have more information about it and I think I might buy a Mac computer in the future.
Paul Thurott “An Update on the Windows Roadmap”
This website talks about windows (Windows XP, Windows Vista, and Windows 7). And it talks about the future of windows Xp and if people can get this operating system if they want it. Then it explains why windows vista is a very important operating system. The main reason that makes them creates widows vista is to improved security. Then it talks about the future of operating system and what Microsoft windows going to release in the future (they called it windows7)
Thursday, September 10, 2009
Muddiest point for week #2
Muddiest point for week #2
Are the components of a PC are similar to the components of Mac?
Are the components of a PC are similar to the components of Mac?
Comment week #2
I commented on Jon Webster's blog ( September 10)
http://jonwebsterslis2600blog.blogspot.com/2009/09/week-two-readings.html?showComment=1252638663780#c5999129872191451974
I commented on katie zimmerman's blog (september 10)
http://jonwebsterslis2600blog.blogspot.com/2009/09/week-two-readings.html?showComment=1252638663780#c5999129872191451974
I commented on Jon Webster's blog ( September 10)
http://jonwebsterslis2600blog.blogspot.com/2009/09/week-two-readings.html?showComment=1252638663780#c5999129872191451974
I commented on katie zimmerman's blog (september 10)
http://jonwebsterslis2600blog.blogspot.com/2009/09/week-two-readings.html?showComment=1252638663780#c5999129872191451974
Comment week #1
1) I commented on Yuqi He's Blog ( September 7 , 2009 )
https://courseweb.pitt.edu/webapps/portal/frameset.jsp?tab_id=_2_1&url=%2fwebapps%2fblackboard%2fexecute%2flauncher%3ftype%3dCourse%26id%3d_17106_1%26url%3d
2) I commented on jamie Bommer's blog ( September 7, 2009)
https://courseweb.pitt.edu/webapps/portal/frameset.jsp?tab_id=_2_1&url=%2fwebapps%2fblackboard%2fexecute%2flauncher%3ftype%3dCourse%26id%3d_17106_1%26url%3d
1) I commented on Yuqi He's Blog ( September 7 , 2009 )
https://courseweb.pitt.edu/webapps/portal/frameset.jsp?tab_id=_2_1&url=%2fwebapps%2fblackboard%2fexecute%2flauncher%3ftype%3dCourse%26id%3d_17106_1%26url%3d
2) I commented on jamie Bommer's blog ( September 7, 2009)
https://courseweb.pitt.edu/webapps/portal/frameset.jsp?tab_id=_2_1&url=%2fwebapps%2fblackboard%2fexecute%2flauncher%3ftype%3dCourse%26id%3d_17106_1%26url%3d
Sunday, September 6, 2009
Notes for Reading required #2
Personal computer hardware
This reading talks about typical personal computer hardware, and how it is made up of multiple physical components of computer hardware. And how these components can be installed and work in a personal computer. I think it is good reading to read and understand because it describes how a computer works and what a computer consist of.
-Motherboard
- Power supply
- Video display controller
- Removable media devices
- Internal storage
- Sound card
-Other peripherals(input)
----------------------------------------------------
“Moore’s Law” and the video:
Is The observation made in 1965 by Gordon Moor, co-founder of Intel.
Moor's Law states that the number of transistors per square inch on integrated circuits had doubled every year since the integrated circuit was invented. Moore predicted that this trend would continue for the foreseeable future. In subsequent years, the pace slowed down a bit, but data density has doubled approximately every 18. Most experts, including Moore himself, expect Moore's Law to hold for at least another two decades.
---------------------------------------------------------------------------
Computer history website
The Computer History Museum is one of the world's largest collections of computing artifacts. The Computer History Museum allows you to explore the computer revolution and its impact on the human experience. If you visit the museum you can see collections of computing artifacts such as The Babbage Engine, Visible Storage and Mastering the Game. also the website itself provides you with some picture and stories of the information age.
Personal computer hardware
This reading talks about typical personal computer hardware, and how it is made up of multiple physical components of computer hardware. And how these components can be installed and work in a personal computer. I think it is good reading to read and understand because it describes how a computer works and what a computer consist of.
-Motherboard
- Power supply
- Video display controller
- Removable media devices
- Internal storage
- Sound card
-Other peripherals(input)
----------------------------------------------------
“Moore’s Law” and the video:
Is The observation made in 1965 by Gordon Moor, co-founder of Intel.
Moor's Law states that the number of transistors per square inch on integrated circuits had doubled every year since the integrated circuit was invented. Moore predicted that this trend would continue for the foreseeable future. In subsequent years, the pace slowed down a bit, but data density has doubled approximately every 18. Most experts, including Moore himself, expect Moore's Law to hold for at least another two decades.
---------------------------------------------------------------------------
Computer history website
The Computer History Museum is one of the world's largest collections of computing artifacts. The Computer History Museum allows you to explore the computer revolution and its impact on the human experience. If you visit the museum you can see collections of computing artifacts such as The Babbage Engine, Visible Storage and Mastering the Game. also the website itself provides you with some picture and stories of the information age.
Tuesday, September 1, 2009
Assigment # 1
Notes on required readings for week #1
1) OCLC report: Information Format Trends: Content, Not Containers (2004).
This report shows that traditional publishing (scholarly and popular) is slowing down, and E-book have entered the adoption phase and this affect the traditional print more. The major trends in the content space are not just technological changes but also social changes. So library and librarians must work hard and try to find new ways to let people come back to library. Paying attention on how content is created, found and used let libraries solve some of their problem. We can use ourselves as an example, we use blogs for this class to write our thoughts and reviews on the articles an report wikis and blogs become more popular and the individual becomes the center of social publishing not institution. Librarians and libraries could use blogs and wikis to reach out their communities
2)Clifford Lynch, “Information Literacy and Information Technology Literacy: New Components in the Curriculum for a Digital Culture”
This Paper talks about two main forms of literacy, Information technology literacy and Information literacy, and how both forms of literacy are distinct but inter-related. I agree with Clifford lynch when he mentioned in his paper that we need to understand not only the two forms of the literacy but we need to understand how each form works with technology , history, economic, social and public policy issues. So because of that, librarians do not have to know just about information literacy but they must know about technology, people, information resources, infrastructure and how different systems can connect people with resources.
3)Vaughan, J. (2005). Lied Library @ four years: technology never stands still. Library Hi Tech, 23(1), 34-49. At
1) OCLC report: Information Format Trends: Content, Not Containers (2004).
This report shows that traditional publishing (scholarly and popular) is slowing down, and E-book have entered the adoption phase and this affect the traditional print more. The major trends in the content space are not just technological changes but also social changes. So library and librarians must work hard and try to find new ways to let people come back to library. Paying attention on how content is created, found and used let libraries solve some of their problem. We can use ourselves as an example, we use blogs for this class to write our thoughts and reviews on the articles an report wikis and blogs become more popular and the individual becomes the center of social publishing not institution. Librarians and libraries could use blogs and wikis to reach out their communities
2)Clifford Lynch, “Information Literacy and Information Technology Literacy: New Components in the Curriculum for a Digital Culture”
This Paper talks about two main forms of literacy, Information technology literacy and Information literacy, and how both forms of literacy are distinct but inter-related. I agree with Clifford lynch when he mentioned in his paper that we need to understand not only the two forms of the literacy but we need to understand how each form works with technology , history, economic, social and public policy issues. So because of that, librarians do not have to know just about information literacy but they must know about technology, people, information resources, infrastructure and how different systems can connect people with resources.
3)Vaughan, J. (2005). Lied Library @ four years: technology never stands still. Library Hi Tech, 23(1), 34-49. At
I think this is a very good paper to read and study, because it shows real experiences from other library (lied library) and how this library dealt with information technology maintenance, enhancement and future development. For instance, the paper shows how major research library faces challenges with maintaining and enhancing new and existing technology and system. Because of the technology is growing rapidly, the lied library in 2003 replaced over 600 unites and removed all the existing PC's to meet their user needs .To reduce the huge expenses, library have all major systems under support. Moreover, the lied library main goal is to meet user needs and expectations. Because of that the library has done several things to maximize the finite resource. The library only let students to check out laptops, and setup a system for student to register their personal laptops. In addition, the lied library provides a good service for a student by putting restrictions for community users. I think all academic libraries must adopt these kinds of policies to make things easy for their students.
Muddiest point for lecture #1
I know information technology is important and helpful to library. but do librarians must know about every specific things in technology to be a good librarian?
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