摘要 :
Emerging high-performance distributed computing environments are enabling new end-to-end formulations in science and engineering that involve multiple interacting processes and data-intensive application workflows. For example, cu...
展开
Emerging high-performance distributed computing environments are enabling new end-to-end formulations in science and engineering that involve multiple interacting processes and data-intensive application workflows. For example, current fusion simulation efforts are exploring coupled models and codes that simultaneously simulate separate application processes, such as the core and the edge turbulence. These components run on different high performance computing resources, need to interact at runtime with each other and with services for data monitoring, data analysis and visualization, and data archiving. As a result, they require efficient and scalable support for dynamic and flexible couplings and interactions, which remains a challenge. This paper presents DataSpaces a flexible interaction and coordination substrate that addresses this challenge. DataSpaces essentially implements a semantically specialized virtual shared space abstraction that can be associatively accessed by all components and services in the application workflow. It enables live data to be extracted from running simulation components, indexes this data online, and then allows it to be monitored, queried and accessed by other components and services via the space using semantically meaningful operators. The underlying data transport is asynchronous, low-overhead and largely memory-to-memory. The design, implementation, and experimental evaluation of DataSpaces using a coupled fusion simulation workflow is presented.
收起
摘要 :
In distributed shared virtual space, we need to have awareness controlled and offered smoothly for realization of a natural and effective system. Benford has defined "aura" which controls the quantities of awareness according to t...
展开
In distributed shared virtual space, we need to have awareness controlled and offered smoothly for realization of a natural and effective system. Benford has defined "aura" which controls the quantities of awareness according to the distance between avators. But if we calculate all avators' aura in the virtual space, it is difficult to offer awareness smoothly because of the huge amount of calculation. If we restrict the quantity of awareness which can be treated simultaneously, it is not guaranteed that awareness is offered from a nearer avator although we can reduce the calculate time. In this paper, we propose the aura calculation based on mesh approach. In this approach, we can reduce the calculation time by dividing virtual space into mech and making search area smaller. We can also offer awareness from a nearer avatar by the turn of the searcing mesh. At the last of this paper, we evaluate the validity of this approach.
收起
摘要 :
Recently, computer networks have been actively used at educational sites for WBT (Web-based teaching) and the like. Teachers are trying to develop teaching materials and actively use them in the classroom. The development of teach...
展开
Recently, computer networks have been actively used at educational sites for WBT (Web-based teaching) and the like. Teachers are trying to develop teaching materials and actively use them in the classroom. The development of teaching materials by 3D CG, actively utilizing the computer graphics functions, has also been started. However, since specialized knowledge and viewpoints are required in developing 3D teaching materials, this development is not easy compared to teaching materials development for WBT and the like. Nor is the environment for utilizing the materials unified. From this viewpoint, this paper proposes a framework for teaching materials development which facilitates the development of 3D teaching materials in the distributed sharing virtual space and realizes the collaborative utilization of multiple teaching materials on a network. The proposed scheme and the teaching materials developed by conventional methods are compared and the effectiveness of the proposed system in the development of teaching materials is discussed.
收起
摘要 :
This paper describes a shared virtual space system architecture to reduce required processing power a server by adapting distributed servers. The architecture also enables each server functions with no disturbances from possible a...
展开
This paper describes a shared virtual space system architecture to reduce required processing power a server by adapting distributed servers. The architecture also enables each server functions with no disturbances from possible another server's failure. It describes the outline and evaluations of the test system results. It uses DCOM(Distributed Component Object Model) which is fie for the development in Windows environment. OpenGL is used for construction of the virtual space.
收起
摘要 :
In this paper, the authors introduce and describe the concept of File System as a Services (FSaaS), an highly configurable cloud service that enables cooperating, distributed applications to define their own rules and policies for...
展开
In this paper, the authors introduce and describe the concept of File System as a Services (FSaaS), an highly configurable cloud service that enables cooperating, distributed applications to define their own rules and policies for managing sets of files shared. The FSaaS aims to create a logical virtual space, containing references to shared files, whose management layer supports the same functionalities of a file system (basic file operations) but where each single file can have different policies for consistency, synchronization and replication. This work explains the idea at the base of FSaaS, describes in details its main components and their interactions and illustrates two use cases for better explaining the provided functionalities.
收起
摘要 :
Video chat is a communication tool widely used by people who live in distant locations. However, there are some differences between video chat communication and real world communication. To enhance the reality of video chat commun...
展开
Video chat is a communication tool widely used by people who live in distant locations. However, there are some differences between video chat communication and real world communication. To enhance the reality of video chat communication, we propose a novel video chat system that enables space sharing and haptic communication. To actualize these functions, the system extracts human regions from video camera images and synthesizes the regions onto a common background image. In addition, the system gives haptic feedback by activating the vibration of a smart watch the user wears when a collision occurs in the virtual shared space. We empirically evaluated the system to confirm the effectiveness and limitation of the functions of space sharing and haptic feedback. From experimental results, we confirmed that users were able to enjoy communication with the space sharing function. In addition, owing to the haptic feedback, users were able to naturally communicate with others in the virtual shared space.
收起
摘要 :
This manuscript provides an in-depth exploration of metaverses, charting their
historical development, technological foundations, and potential multifarious
applications. It critically assesses the prevailing challenges and expl...
展开
This manuscript provides an in-depth exploration of metaverses, charting their
historical development, technological foundations, and potential multifarious
applications. It critically assesses the prevailing challenges and explores potential
pathways for the evolution of these expansive, virtual environments. In
shedding light on the wide-ranging implications of metaverses, it navigates
societal, cultural, regulatory, and economic landscapes. It further elucidates
the symbiosis between the Internet of Things (IoT) and metaverses, presenting
empirical evidence derived from purpose-built IoT frameworks for metaverse
applications. A series of experiments were conducted to affirm the hypothesis
that the integration of IoT into metaverse utilities, including advanced concepts
such as smart buildings, the intricate task of power grid management,
and the precision-centric domain of agriculture, can drive significant progress.
Quantitative findings provide compelling evidence of marked improvements in
energy conservation, cost-efficiency, and operational effectiveness arising from
the incorporation of IoT into metaverse use cases. With observed mean
improvements of 25% in energy conservation, 17% in cost reduction, and an
impressive 22% increase in operational efficiency, specifically in the realms of
smart building applications and power grid management, this study underscores
the pressing need for sustained research and development initiatives in
this emerging.
收起
摘要 :
Networked mobile devices ranging from lightweight smartphones and PDAs to powerful notebooks benefit from persistent distributed object management and asynchronous communication means provided by space based middleware. The demand...
展开
Networked mobile devices ranging from lightweight smartphones and PDAs to powerful notebooks benefit from persistent distributed object management and asynchronous communication means provided by space based middleware. The demanding requirements for successful coordination of processes on mobile devices are seamless operation even during offline periods and dependable synchronization when reconnecting. In order to adapt the space accurately and to hide the different semantics of coordination primitives while roaming, this work proposes a mobility aware coordination layer. This layer uses sensor information about the current quality of the wireless link and predicts the link quality in the near future by means of heuristically derived mobility patterns. A prototype implementation on CORSO is applied to the producer/consumer coordination pattern and experimentally evaluated.
收起
原文获取