Collaboratories

No abstract.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/34569/1/1440360103_ftp.pd

An extensible probe architecture for network protocol performance measurement

This paper describes the architecture, implementation, and application of Windmill, a passive network protocol performance measurement tool. Windmill enables experimenters to measure a broad range of protocol performance metrics both by reconstructing application-level network protocols and by exposing the underlying protocol layers' events. Windmill is split into three functional components: a dynamically compiled Windmill Protocol Filter (WPF), a set of abstract protocol modules, and an extensible experiment engine. To demonstrate Windmill's utility, we present the results from several experiments. The first set of experiments validates a possible cause for the correlation between Internet routing instability and network bandwidth usage. The second set of experiments highlights Windmill's ability to act as a driver for a complementary active Internet measurement infrastructure, its ability to perform online data reduction, and the non-intrusive measurement of a closed system. Copyright © 2003 John Wiley & Sons, Ltd.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/34551/1/557_ftp.pd

Visualization Techniques in Space and Atmospheric Sciences

Unprecedented volumes of data will be generated by research programs that investigate the Earth as a system and the origin of the universe, which will in turn require analysis and interpretation that will lead to meaningful scientific insight. Providing a widely distributed research community with the ability to access, manipulate, analyze, and visualize these complex, multidimensional data sets depends on a wide range of computer science and technology topics. Data storage and compression, data base management, computational methods and algorithms, artificial intelligence, telecommunications, and high-resolution display are just a few of the topics addressed. A unifying theme throughout the papers with regards to advanced data handling and visualization is the need for interactivity, speed, user-friendliness, and extensibility

GridLabs: Facilitating collaborative access to remote laboratories

eScience is usually characterized by the cooperation of distributed groups of researchers who share data and computing environments and perform experiments together. Often immense data sets that were produced by expensive equipments need to be accessed and evaluated. Such eScience scenarios require both, support for collaboration of researchers at distant locations and also the remote control of the shared laboratory devices. However, this type of remote experimentation and collaboration must be taught during university education. In this paper, we propose a framework that supports the training of above practices through the provision of a dedicated collaboration environment. It extends current approaches with support for a life cycle of remote labs, including scheduling the access to remote labs as well as defining access permissions. Our experiences in teaching lab courses suggest that the approach is also applicable in eScience scenarios

Status Report of the Inter-Laboratory Task Force on Remote Operation

In February 2000, the International Committee for Future Accelerators initiated a study of a new model for international collaboration on a future large accelerator project, the Global Accelerator Network. The study is based on a model of a facility, which is remote from most of the collaborating institutions. It is designed, built and operated by a collaboration of equal partner institutions distributed around the world. According to this model, the expert-staff from each laboratory remains based at their home institution but continues to participate in the operation of the machine after construction. This report summarizes the conclusions of the Task Force on Remote Operation, which investigated the general and technical implications of far-remote operations.Comment: 32 pages, PDF, report of ICFA sponsored task forc

Researchers in the Digital Age

http://deepblue.lib.umich.edu/bitstream/2027.42/168157/1/2001-Researchers_in_the_Digital_Age.pd

计算机支持下协同工作的心理学研究

计算机支持下协同工作（ｃｏｍｐｕｔｅｒｓｕｐｐｏｒｔｅｄｃｏｏｐｅｒａｔｉｖｅｗｏｒｋ，简称ＣＳＣＷ）是计算机科学和认知科学的新兴交叉研究领域，主要研究在高技术支持下的群体协作。ＣＳＣＷ中蕴含着大量的心理学研究问题。心理学家需要更好地理解群体协作的性质以评估新技术是否与群体协作相适应，其研究成果会有助于理解如何构建技术和哪些技术可能成功。本文首先从分析ＣＳＣＷ的领域维度入手，然后讨论与之相关的一些重要的心理学研究问题，最后简要介绍国外在该领域进行的研究工作</p