Wednesday, September 29, 2010
Unit 5 Reading Notes
Unit 5 Reading Notes
Database:
There are different types of databases linked to the type of computer systems they support, however all databases are structured so that they can integrate with others through the Open Database Connectivity (OBDC). Operational databases are business /organization oriented with modules catering to all aspects of the organization’s needs. They are therefore structured to suit particular groups of end users.
Indexing is an important feature of databases since it impacts the time required for running a query, however, maintenance of it slows down the system because of the many possibilities it requires for accurate indexing. Database replication allows multiple copies of a database on different computers for increased user access. Different levels of authorization are utilized to control system accessibility; databases generally require authorization for access depending on the target user.
Introduction to Metadata:
Data about data, Metadata is significant for classifying, describing, locating and creating data with a view to aid in the location and utilization of same. All information objects have three features- content, context and structure. Library metadata is governed by rules and regulation of a specific governing body such as AACR2 or LCSH. It has been recognized that no one single metadata standard can cover all types of information objects especially since data and information is increasing at such a fast pace, never-the-less, a structured metadata system is vital for creating widespread access to usable information packages. This means also, that the use of this structured metadata system would have to be taught to users or it will not serve its intended purpose.
There have been an increase in user created metadata and though these generally serve a particular group or community (folksonomies), these community specific labeling are proving to be a success even outside of their grouping especially with those who are familiar with the semantics of the grouping. This has given rise to metadata that is based on the objects creation or origin and the target user with consideration for the user capability.
All information objects have a life cycle ranging from creation to obsolescence?
Metadata is crucial to effective data management.
Dublin Core Data Model:
1. An international effort that attempts to create consensus in resource management/metadata creation.
2. Aims to apply a ‘core set of semantics’ that will cater for all types of resources and its descriptors.
3. There is still a lot of work to be done with this ‘work in progress”.
Muddiest point for 9/27
If a movie/video was saved in a particular format previously can it be easily transferred and stored, for example a wmv as a swf? Would there be any requirements other than having access to the new format.
Friday, September 24, 2010
Links to comments on other people’s posts for wk4
http://skdhuth.blogspot.com/2010/09/week-4-notes_21.html?showComment=1285382280907#c1867739935089736195
Week 4 Readings - Comments
Data Compression
An informative and extensive script on data compression, the most important things I learnt are;-
1. There are different types of compression possibilities therefore the user must be cautious in selecting the most appropriate one for the job at hand.
2. Compressed files have to be decompressed before being used, this means that both sender and receiver must have and be able to use the required tools.
3. Lossless compression is totally reversible whilst lossy incurs some content contraction in the process.
4. Though compression saves storage space it requires additional processing before it can be reused, the implication here is that immediate use of content is compromised somewhat.
5. Streaming, the way we look at lectures, is not true streaming since it is not live.
6. Data compression usage in libraries will cut back on storage space but would that exclude usage of content by those who don’t have or cannot use decompression software. In addition, will loss of content, if applicable, be advertised so that the user will be forewarned?
Imaging Pittsburgh
1. This article reminded me of a tour I did for another class where Pittsburgh then and now was the focus.
2. The need to preserve and share the past is not just a good thing it is necessary to inculcate an appreciation of what was and what is.
3. Many skills from disparate contributors are required for a task of this complexity.
4. Metadata's importance is underscored; it is the thread that links the user to the information source.
5. The availability of this content online will no doubt impact both access and usage.
YouTube and Libraries
1. Utilizing YouTube’s extensive reach has great possibilities for libraries; many have already jumped on board and are having some success. In addition to those listed in the article I came across one that is close to home (for me). Check it out!
Wednesday, September 22, 2010
Muddiest point for 9/20
Parts of files are stored in different places on the storage disks in a computer, what happens to files when sectors go bad/are corrupted? Is the entire file lost or just the part that is in the bad sector?
Monday, September 20, 2010
Unit 5 Reading - Comments
Unit 5 Reading - Comments
Database:
There are different types of databases linked to the type of computer systems they support, however all databases are structured so that they can integrate with others through the Open Database Connectivity (OBDC). Operational databases are business /organization oriented with modules catering to all aspects of the organization’s needs. They are therefore structured to suit particular groups of end users.
Indexing is an important feature of databases since it impacts the time required for running a query, however, maintenance of it slows down the system because of the many possibilities it requires for accurate indexing. Database replication allows multiple copies of a database on different computers for increased user access. Different levels of authorization are utilized to control system accessibility; databases generally require authorization for access depending on the target user.
Introduction to Metadata:
Data about data, Metadata is significant for classifying, describing, locating and creating data with a view to aid in the location and utilization of same. All information objects have three features- content, context and structure. Library metadata is governed by rules and regulation of a specific governing body such as AACR2 or LCSH. It has been recognized that no one single metadata standard can cover all types of information objects especially since data and information is increasing at such a fast pace, never-the-less, a structured metadata system is vital for creating widespread access to usable information packages. This means also, that the use of this structured metadata system would have to be taught to users or it will not serve its intended purpose.
There have been an increase in user created metadata and though these generally serve a particular group or community (folksonomies), these community specific labeling are proving to be a success even outside of their grouping especially with those who are familiar with the semantics of the grouping. This has given rise to metadata that is based on the objects creation or origin and the target user with consideration for the user capability.
All information objects have a life cycle ranging from creation to obsolescence?
Metadata is crucial to effective data management.
Dublin Core Data Model:
1. An international effort that attempts to create consensus in resource management/metadata creation.
2. Aims to apply a ‘core set of semantics’ that will cater for all types of resources and its descriptors.
3. There is still a lot of work to be done with this ‘work in progress”.
Assignment 2- Link to Flickr
Hello,
This is the Link to my image collection. Enjoy!
http://www.flickr.com/photos/53981515@N02/?saved=1
This is the Link to my image collection. Enjoy!
http://www.flickr.com/photos/53981515@N02/?saved=1
Wednesday, September 15, 2010
Muddiest point for 9/13
No muddy point, the questions I had were answered in class. The lecture itself was clear since I did the readings before viewing the lecture
Reading Notes - week 3
Introduction to Linux:
I had already done readings on this for a previous class so that the material was familiar. The following points are my take-away from the article.
1. The impact of UNIX on interoperability is profound; Linux is a free OS, that is, no proprietary provider fees.
2. Open source software is being touted as being of a better quality because development input is wider ranging than the not-for-free software.
3. There is a Linux OS to suit every need and there is readily available help on the internet if required. Still, many people pay for software, hence the success of software providers like Microsoft. Is it that we feel that it is not reliable because it is free, or, is that some members of the computing population feel more comfortable with the after sale support offered with proprietary packages?
Mac OS:
The history was interesting noting mergers and collaborations; the use of pre-existing open source software to create a proprietary system was an eye opener since I thought that the use of this type (free) meant that the resulting product would also be free. Some of the technical information was confusing whilst others clarified certain points eg. Java and the many uses of it in a variety of electronic devices. The conclusion was the most helpful, in it the author compared his three most eligible systems for client computing. In his Linux statements he says, “No. Not today. Not yet”. I felt that was probably what a lot of computer users would say when confronted with adopting this OS, “not now, when I’m ready for it”.
Mac OSX (Wikipedia)
A lot of repetition from the previous article but I recognized that the system is a dynamic one continually evolving to be more versatile, user-friendly and ultimately more marketable.
Update on Windows Roadmap
Totally relevant information in this article since I am currently using Windows Vista Home Premium on my PC, I was heartened to know that support will continue for a few more years and that upgrading to windows 7 is not immediately mandatory. It seems that as soon as I get comfortable with one OS a new one looms, lifelong learning is not an option it is a survival technique!
Monday, September 6, 2010
Muddiest point -Week1
The most confusing thing about this lecture is figuring out when each item is due. This can be further clarified.
Friday, September 3, 2010
Week 2 Reading Notes / muddiest point
Computer Hardware: Though I am familiar with the hardware I use on a daily basis I found the article explained their functions clearly and effectively, I shall be using some of the explanations in my Library classes next term and of couse the source will be sited so that students can visit and get more details if needed.
Moore's Law (article and video): I first came into contact with this concept whilst doing the impact of technology from a management/costing point of view. The fact that capacity doubles every eighteen months or sooner has implications for cost projections. Sadly however, it has been found that the savings derived from this always seems to be wanted in some other supporting expense to ensure that the technology functions. On a more personal note, taking into consideration the fact that technology's obsolesence is also affected by Moore's Law, I wonder if the price for the latest smartphone is really worth it? Hmmmm.
Computer History Museum: Enjoyed the tour and may I say thanks to digitization that I was able to be part of this virtual tour and 'see' the items on the marketing brochures in the collection. Those machines were really huge, I will not complain about logging my laptop around again, I guess it's all about perspective huh?
Muddiest Point: I am aware that there is the perception that digitization will negatively affect the need for librarians, in Trinidad I think it will increase the need, for guidance and research skills especially for non-print media. Is the fear only with those who are not up to par with the electronic side of librarianship?
Links to week 2 Comments:
Moore's Law (article and video): I first came into contact with this concept whilst doing the impact of technology from a management/costing point of view. The fact that capacity doubles every eighteen months or sooner has implications for cost projections. Sadly however, it has been found that the savings derived from this always seems to be wanted in some other supporting expense to ensure that the technology functions. On a more personal note, taking into consideration the fact that technology's obsolesence is also affected by Moore's Law, I wonder if the price for the latest smartphone is really worth it? Hmmmm.
Computer History Museum: Enjoyed the tour and may I say thanks to digitization that I was able to be part of this virtual tour and 'see' the items on the marketing brochures in the collection. Those machines were really huge, I will not complain about logging my laptop around again, I guess it's all about perspective huh?
Muddiest Point: I am aware that there is the perception that digitization will negatively affect the need for librarians, in Trinidad I think it will increase the need, for guidance and research skills especially for non-print media. Is the fear only with those who are not up to par with the electronic side of librarianship?
Links to week 2 Comments:
http://kel2600.blogspot.com/2010/09/reading-notes-september-13-2010.html?showComment=1284599023893#c666765032756924416
http://maj66.blogspot.com/2010/09/wikipedia-articles.html?showComment=1284253844092#c4745464930538065859
Wednesday, September 1, 2010
Reading notes- Week 1
Information technology literacy and information literacy are divergent issues with clear overlaps since the understanding of one is necessary to fully appreciate the other. Schools' curricula seems to fall short in adequately preparing students with the requirements for navigating real life issues in this rapidly evolving digital environment, but where does it really end? Do student's realise the need and implications of lifelong learning? Where does the school's responsibility end and an individual's quest for knowledge begin? What happens if it doesn't kick in and who is ultimately responsible. As the writer points out thre is "...the need for continued updating of these skills throughout one's adult life..."
Content not container- When information is required format is immaterial; a book, audio recording or DVD should not impinge on the reality of content. That digital is sometimes more portable, accessible or suited to the users taste is of little consequence when the transfer of information and the creation of knowledge is the prime objective. The fact that digital and electronic transfer of information is a rapidly increasing preference points to the adaptability and versatility of the species and the delineating generational stamp which may well be the trademark of this era.
The sustainability of a high-tech library is what comes to my mind after reading the article by Jason Vaughan, after all the initial costs it seems that the whole thing has to be constantly upgraded and reviewed to keep abreast of changes and advances.Is it feasible for everyone or is it something to aim for in the distant future when money is more available for trained staff, equipment, resources.......
http://sek80.blogspot.com/2010/09/muddiest-point.html?showComment=1283556584779#c5576658389770682274
Content not container- When information is required format is immaterial; a book, audio recording or DVD should not impinge on the reality of content. That digital is sometimes more portable, accessible or suited to the users taste is of little consequence when the transfer of information and the creation of knowledge is the prime objective. The fact that digital and electronic transfer of information is a rapidly increasing preference points to the adaptability and versatility of the species and the delineating generational stamp which may well be the trademark of this era.
The sustainability of a high-tech library is what comes to my mind after reading the article by Jason Vaughan, after all the initial costs it seems that the whole thing has to be constantly upgraded and reviewed to keep abreast of changes and advances.Is it feasible for everyone or is it something to aim for in the distant future when money is more available for trained staff, equipment, resources.......
Links to wk 1 Comments
http://sek80.blogspot.com/2010/09/muddiest-point.html?showComment=1283556584779#c5576658389770682274
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