Ubiquitous computing refers to technology that is integrated into everyday life to the extent that it is indistinguishable from it. The vision is for computing services to be available anytime and anywhere through devices that are increasingly more powerful, smaller, and cheaper. Ubiquitous computing is changing daily activities by allowing people to communicate and interact with hundreds of computing devices in new ways. However, it also presents challenges in systems design, security and privacy, and how teaching and learning can take advantage of ubiquitous access to resources and tools.
The term “Cloud Computing” is a recent buzzword in the IT world. Behind this fancy poetic phrase, there lies a true picture for the future of computing for both in technical prospective and social prospective. However, the term “Cloud Computing” is recent but the idea of centralizing computation and storage in distributed data centers maintained by third party companies is not new but it came in the way back in 1990s along with distributed computing approaches like grid computing. Cloud computing aimed at providing IT as a service to the cloud users on-demand basic with greater flexibility, availability, reliability and scalability with utility computing model. This new paradigm of computing has an immense potential in it to be use in the field of e-governance and in rural development perspective in the developing country like India.
The term “Cloud Computing” is a recent buzzword in the IT world. Behind this fancy poetic phrase, there lies a true picture for the future of computing for both in technical prospective and social prospective. However, the term “Cloud Computing” is recent but the idea of centralizing computation and storage in distributed data centers maintained by third party companies is not new but it came in the way back in 1990s along with distributed computing approaches like grid computing. Cloud computing aimed at providing IT as a service to the cloud users on-demand basic with greater flexibility, availability, reliability and scalability with utility computing model. This new paradigm of computing has an immense potential in it to be use in the field of e-governance and in rural development perspective in the developing country like India.
Ubiquitous computing is one of the most prodiously growing topic which will be covering all facets of life.In the course of ordinary activities, someone "using" ubiquitous computing engages many computational devices and systems simultaneously, and may not necessarily even be aware that they are doing so. This model is considered an advancement from the older desktop paradigm. More formally, ubiquitous computing is defined as "machines that fit the human environment instead of forcing humans to enter theirs".
Mobile Computing is a technology that allows transmission of data, voice and video via a computer or any other wireless enabled device without having to be connected to a fixed physical link.
ABSTRACT
Cloud computing promises to significantly change the way we use computers and access and store our personal and business information. With these new computing and communications paradigms arise new data security challenges. Existing data protection mechanisms such as encryption have failed in preventing data theft attacks, especially those perpetrated by an insider to the cloud provider.
For securing user data from such attacks a new paradigm called fog computing can be used. Fog Computing is a paradigm that extends Cloud computing and services to the edge of the network. Similar to Cloud, Fog provides data, compute, storage, and application services to end-users. The motivation of Fog computing lies in a series of real scenarios, such as Smart Grid, smart traffic lights in vehicular networks and software defined network This technique can monitor the user activity to identify the legitimacy and prevent from any unauthorized user access. Here we have discussed this paradigm for preventing misuse of user data and securing information.
CONCLUSION
This proposal of monitoring data access patterns by profiling user behavior to determine if and when a malicious insider illegitimately accesses someone’s documents in a Cloud service. Decoy documents stored in the Cloud alongside the user’s real data also serve as sensors to detect illegitimate access. Once unauthorized data access or exposure is suspected, and later verified, with challenge questions for instance, this inundate the malicious insider with bogus information in order to dilute the user’s real data. Such preventive attacks that rely on disinformation technology could provide unprecedented levels of security in the Cloud and in social networks.
ABSTRACT
Cloud computing promises to significantly change the way we use computers and access and store our personal and business information. With these new computing and communications paradigms arise new data security challenges. Existing data protection mechanisms such as encryption have failed in preventing data theft attacks, especially those perpetrated by an insider to the cloud provider. For securing user data from such attacks a new paradigm called fog computing can be used. Fog Computing is a paradigm that extends Cloud computing and services to the edge of the network. Similar to Cloud, Fog provides data, compute, storage, and application services to end-users. The motivation of Fog computing lies in a series of real scenarios, such as Smart Grid, smart traffic lights in vehicular networks and software defined network .This technique can monitor the user activity to identify the legitimacy and prevent from any unauthorized user access. Here we have discussed this paradigm for preventing misuse of user data and securing information.
Ubiquitous computing is one of the most prodiously growing topic which will be covering all facets of life.In the course of ordinary activities, someone "using" ubiquitous computing engages many computational devices and systems simultaneously, and may not necessarily even be aware that they are doing so. This model is considered an advancement from the older desktop paradigm. More formally, ubiquitous computing is defined as "machines that fit the human environment instead of forcing humans to enter theirs".
Mobile Computing is a technology that allows transmission of data, voice and video via a computer or any other wireless enabled device without having to be connected to a fixed physical link.
ABSTRACT
Cloud computing promises to significantly change the way we use computers and access and store our personal and business information. With these new computing and communications paradigms arise new data security challenges. Existing data protection mechanisms such as encryption have failed in preventing data theft attacks, especially those perpetrated by an insider to the cloud provider.
For securing user data from such attacks a new paradigm called fog computing can be used. Fog Computing is a paradigm that extends Cloud computing and services to the edge of the network. Similar to Cloud, Fog provides data, compute, storage, and application services to end-users. The motivation of Fog computing lies in a series of real scenarios, such as Smart Grid, smart traffic lights in vehicular networks and software defined network This technique can monitor the user activity to identify the legitimacy and prevent from any unauthorized user access. Here we have discussed this paradigm for preventing misuse of user data and securing information.
CONCLUSION
This proposal of monitoring data access patterns by profiling user behavior to determine if and when a malicious insider illegitimately accesses someone’s documents in a Cloud service. Decoy documents stored in the Cloud alongside the user’s real data also serve as sensors to detect illegitimate access. Once unauthorized data access or exposure is suspected, and later verified, with challenge questions for instance, this inundate the malicious insider with bogus information in order to dilute the user’s real data. Such preventive attacks that rely on disinformation technology could provide unprecedented levels of security in the Cloud and in social networks.
ABSTRACT
Cloud computing promises to significantly change the way we use computers and access and store our personal and business information. With these new computing and communications paradigms arise new data security challenges. Existing data protection mechanisms such as encryption have failed in preventing data theft attacks, especially those perpetrated by an insider to the cloud provider. For securing user data from such attacks a new paradigm called fog computing can be used. Fog Computing is a paradigm that extends Cloud computing and services to the edge of the network. Similar to Cloud, Fog provides data, compute, storage, and application services to end-users. The motivation of Fog computing lies in a series of real scenarios, such as Smart Grid, smart traffic lights in vehicular networks and software defined network .This technique can monitor the user activity to identify the legitimacy and prevent from any unauthorized user access. Here we have discussed this paradigm for preventing misuse of user data and securing information.
Dynamic Programming design technique is one of the fundamental algorithm design techniques, and possibly one of the ones that are hardest to master for those who did not study it formally. In these slides (which are continuation of part 1 slides), we cover two problems: maximum value contiguous subarray, and maximum increasing subsequence.
Dynamic Programming is one of the most interesting design techniques. The concise idea is to avoid recomputations. Matrix Chain Multiplication and All Pairs Shortest Paths are two interesting applications of this design technique
it contains the detail information about Dynamic programming, Knapsack problem, Forward / backward knapsack, Optimal Binary Search Tree (OBST), Traveling sales person problem(TSP) using dynamic programming
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Virtuous Learning: Ubiquity, Openness, Creativity
Virtuous does not mean only ‘virtual’
Virtuous also means more than ‘VLE’ or ‘VLC’
Virtuous learning which relies on ubiquity, openness and creativity encourages social and epistemic learning virtues
Malaysia keynote "Ubiquitous Computing and Online Collaboration for Open Educ...Steve McCarty
"Ubiquitous Computing and Online Collaboration for Open Education." Keynote Address at the 5th International Malaysian Educational Technology Convention, Kuantan, Malaysia (17 October 2011).
2. What is Ubiquitous Computing?
The term ubiquitous implies that technology is
everywhere and we use it all the time.
▫ Using computing technologies will be as natural as
using other non-computing technologies (e.g.,
pen, paper, and cups)
▫ Computing services will be available anytime and
anywhere.
3. Vision
“The most profound technologies are those that
disappear. They weave themselves into the fabric
of everyday life until they are indistinguishable
from it ” – Mark Weiser
Think: writing, central heating, electric
lighting, …
4. Why is it Important?
Ubiquitous computing is changing our daily
activities in a variety of ways. When it comes to
using today's digital tools users tend to
• communicate in different ways
• be more active
• have more control
8. The Brave New World
• Devices increasingly more
{powerful ^ smaller ^ cheaper}
• People interact daily with hundreds of computing
devices (many of them mobile):
▫ Cars
▫ Desktops/Laptops
▫ Cell phones
▫ PDAs
▫ MP3 players
▫ Transportation passes
Computing is becoming pervasive
9. Securing Data & Services
• Security is critical because in many pervasive
applications, we interact with agents that are not
in our “home” or “office” environment.
• Much of the work in security for distributed
systems is not directly applicable to pervasive
environments
• Need to worry about privacy!
10. Future challenges
Ubiquitous computing presents challenges across
computer science:
1. In systems design and engineering,
2. In systems modelling
3. In user interface design
11. Value in Teaching and Learning?
To take full advantage of the potential inherent in ubiquitous
computing, teaching must be reconceived from instructing to
conducting learning. Teaching and learning must no longer be thought
of as bound by the school building or the school day.
1. First, ubiquitous access to the Internet and telecommunication
technologies changes classrooms into places with access to many
resources and rich connections to the world.
2. Second, ubiquitous access to a variety of digital devices and
multimedia tools makes it possible to create, analyze and
communicate knowledge using a rich variety of media forms.
3. Third, ubiquitous access to digital tools that automate lower level
skills allows students to concentrate on higher level thinking, and
lessens the skill levels needed to explore a range of complex topics.
12. Research Paper: Smart Classroom, Enhancing Collaborative
Learning Using Pervasive Computing Technology
• Smart Classroom facilitates collaborative learning among college
students.
• In a Smart Classroom, each student has a situation-aware PDA
• Students' PDAs dynamically form mobile ad hoc networks for group
meetings.
• Each PDA monitors its situation and uses situation to trigger
communication activity among the students and the instructor for
group discussion and automatic distribution of presentation
materials.
• Middleware can effectively address the situation-awareness and ad
hoc group communication for pervasive computing by providing
development and runtime support to the application software.
• Link: http://dpse.eas.asu.edu/papers/SmartClassroom.pdf
13. Other research in the area…
1. Satyanarayanan, Mahadev. "Pervasive computing: Vision and
challenges." Personal Communications, IEEE 8.4 (2001): 10-17.
2. Saha, Debashis, and Amitava Mukherjee. "Pervasive computing: a
paradigm for the 21st century." Computer 36.3 (2003): 25-31.
3. Banavar, Guruduth, et al. "Challenges: an application model for
pervasive computing." Proceedings of the 6th annual
international conference on Mobile computing and networking.
ACM, 2000.
4. Chun, XU Guang You SHI Yuan, and XIE Wei Kai.
"Pervasive/Ubiquitous Computing." Chinese Journal of
Computers 9 (2003): 002.
5. Yau, Stephen S., et al. "Smart classroom: Enhancing collaborative
learning using pervasive computing technology." II American
Society of Engineering Education (ASEE) (2003).
14. History of Ubiquitous Computing
The origins of ubiquitous computing can be traced from to the 1940s
and 1950s all the way to today.
Vannavar Bush
(1940s):
Was already developing ideas for what were later to become the computer, hypertext, and the Internet.
Douglas Engelbart
(1950/60s):
Has always been interested in how technology can be used to support people in their collective endeavors.
Alan Kay (1970s): Worked to make technology as having an impact if it is universally available.
Seymour Papert
(1980s):
Is mostly concerned with access to technology with regards to ubiquitous computing for education.
Mark Weiser
(1990s):
Did ground-breaking work in the area of ubiquitous computing, and was the first to define it as such.
Howard Rheingold
(2002):
Focuses on empowerment of people through pervasive, mobile, and connected technology in his book Smart Mobs.
Bryan Alexander
(2004):
Emphasizes the aspect of mobility in his 2004 EDUCAUSE article, "Going Nomadic”
Wade Roush (2005): Wrote an interesting article in MIT's Technology Review called "Social Machines"