Proceedings 22nd International Conference on Distributed Computing Systems Workshops
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An integrated distance learning system capable of supporting interactions for asynchronous distance learning
Proceedings 22nd International Conference on Distributed Computing Systems Workshops - - Trang 116-121
In recent years, as the demand grows for taking lectures without the limitation of time and place by those who have jobs and require life-long education, expectations are increasing for the implementation of a distance learning system. However, in most existing asynchronous distance learning systems, the images shown on screen are limited to images of the teacher with synchronized digital document......
#Computer aided instruction #Educational institutions #Humans #Educational technology #XML #Computer networks #Environmental economics #Stability #Internet #Collaboration
Multimedia communication environment for children, handicapped, and elderly people
Proceedings 22nd International Conference on Distributed Computing Systems Workshops - - Trang 122-127
We have developed a multimedia communication environment for children and handicapped and elderly people. This environment, named "F-Communication system," is based on self-explanatory components and multiple interfaces. It allows users to manipulate components and send multimedia messages using only mouse clicks. Self-explanatory components for communication and an overview of two interfaces of t......
#Multimedia communication #Senior citizens #Multimedia systems #Humans #Mice #Cultural differences #Information systems #Cities and towns #Electronic mail #Keyboards
A flexible, privacy-preserving authentication framework for ubiquitous computing environments
Proceedings 22nd International Conference on Distributed Computing Systems Workshops - - Trang 771-776
The proliferation of smart gadgets, appliances, mobile devices, PDAs and sensors has enabled the construction of ubiquitous computing environments, transforming regular physical spaces into "Active Information Spaces" augmented with intelligence and enhanced with services. This new exciting computing paradigm promises to revolutionize the way we interact with computers, services, and the surroundi......
#Authentication #Ubiquitous computing #Pervasive computing #Physics computing #Intelligent sensors #Home appliances #Mobile computing #Personal digital assistants #Productivity #Access control
Stability of autonomous decentralized flow control schemes in high-speed networks
Proceedings 22nd International Conference on Distributed Computing Systems Workshops - - Trang 63-68
Focuses on flow control in high-speed networks. Each node in the networks handles its local traffic flow only on the basis of the information it knows, but it is preferable that the decision-making of each node leads to high performance of the whole network. To this end, we investigated the behavior of packet flow when a node is congested, and show an appropriate flow control model through simulat......
#Stability #Intelligent networks #High-speed networks #Communication system traffic control #Propagation delay #Throughput #Decision making #Optical propagation #Earth #Moon
Superphony: towards ubiquitous audio communication services
Proceedings 22nd International Conference on Distributed Computing Systems Workshops - - Trang 728-731
With the expansion of mobility in communication technologies, the increasing individual audio solicitations require a definition of priorities in audio information. A new concept called superphony is identified which improves communication abilities by reconstructing an audio sphere around each user and filtering audio information based on user and environment profiles. Requirements and elements f......
#Communications technology #Mobile communication #Streaming media #Research and development #Information filtering #Information security #Resource management #Privacy #Vehicle dynamics #Web and internet services
Minimizing protocol processing in multimedia servers - implementation and evaluation of network level framing
Proceedings 22nd International Conference on Distributed Computing Systems Workshops - - Trang 149-155
Data servers for multimedia applications like news-on-demand represent a severe bottleneck, because a potentially very high number of users concurrently retrieve data with high data rates. In the Intermediate Storage Node Concept (INSTANCE) project, we develop a new architecture for media-on-demand servers that maximizes the number of concurrent clients a single server can support. Traditional bot......
#Protocols #Intelligent networks #Network servers #Communication system operations and management #Application software #Error correction #Memory management #Memory architecture #Operating systems #Central Processing Unit
Scene context dependent key frame selection in streaming
Proceedings 22nd International Conference on Distributed Computing Systems Workshops - - Trang 208-213
In this paper, we describe the development of our scene context dependent key frame selection method to reduce the amount of recorded video data. We propose the use of motion analysis (MA) to adapt to scene content in our key frame selection process. Based on the information generated by the motion analysis stage, frames in the video sequence which contain significant motion information are select......
#Layout #Video recording #Motion analysis #Surveillance #Image motion analysis #Multimedia systems #Cameras #Optical computing #Weather forecasting #Multimedia databases
Coordination architecture for evolvable event-based systems
Proceedings 22nd International Conference on Distributed Computing Systems Workshops - - Trang 571-572
Event-based and publish/subscribe systems provide levels of flexibility and agility that bring us much closer to what is required for operating in business environments that are "time critical". It is essential that the evolution of systems be driven in terms of the business concepts that underlie the requirements for change or determine the dynamics of service procurement, and not the lower level......
#Time to market #Delay #Procurement #Mechanical factors #Middleware #Object oriented modeling #Legislation #Computer architecture #Informatics #Web services
Intrinsic references in distributed systems
Proceedings 22nd International Conference on Distributed Computing Systems Workshops - - Trang 675-680
The notion of intrinsic references, i.e. references based on the hash digest of the referent, is introduced and contrasted with that of physical references, where the referent is defined relative to the state of a physical system. A retrieval mechanism using intrinsic references, the Elephant Store, is presented. The use of intrinsic references in hierarchical data structures is discussed, and the......
#Cryptography #Electronic mail #Information retrieval #Uniform resource locators #Dictionaries #Data structures #Authentication #Digital signatures #Data security #Resource management
Progressive HTML for proximate and automatic interactions
Proceedings 22nd International Conference on Distributed Computing Systems Workshops - - Trang 723-727
Development and projections in the field of PDAs and wireless communication architectures let us consider new applications which exploit short range and direct exchanges. In a close future we may imagine mobile users equipped with wireless PDAs dynamically and spontaneously exchanging rich information in an ad hoc manner In such a context, a connection between two PDAs may be broken at any time be......
#HTML #Personal digital assistants #Internet #Bandwidth #Wireless communication #Mobile communication #Web pages #Context #Web server #Mobile computing
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