This paper proposes a hierarchical control architecture for engaging demand into providing primary frequency response services. The proposed architecture relies on the use of information about accumulated energy for the aggregation of demand capabilities and dissagregation of demand responsibilities. Since the accumulated energy has a distinct additive property, the aggregation/disaggregation o...

Web-based applications are becoming mission-critical for many organizations and their performance has to be closely watched. This paper discusses three important activities in this context: load testing, benchmarking, and application performance management. Best practices for each of these activities are identified. The paper also explains how basic performance results can be used to increase t...

Drawing on the attention-based view of the firm and the experiential learning literature, this paper develops and tests a theory on how firms learn to cope with the strains of activity load. We first empirically test the impact of activity load on the performance of a focal activity. We then study how this relationship is moderated by four dimensions of experiential learning: stock, homogeneity...

Dongsheng Wu, Jun Li, Xiaoping Shu, Xiaojing Zha, Beili Xu School of Mechanical and Electronic Engineering, East China Jiaotong University,Nanchang 330013, P. R. China Abstract: Braking performance test methods are compared and analyzed .ABS will not work if the speed is too low when the automobile is tested by tester and load testing. Since the braking performance can not be evaluated accurate...

Constructing large-scale test collections is costly and timeconsuming, and a few relevance assessment methods have been proposed for constructing “minimal” information retrieval test collections that may still provide reliable experimental results. In contrast to building up such test collections, we take existing test collections constructed through the traditional pooling approach and empiric...

In this paper we take a step toward addressing a pressing general problem in the development of data visualization systems — how to measure their effectiveness. The step we take is to define a model for specifying the generation of test data that can be employed for standardized and quantitative testing of a system’s performance. These test data sets, in conjunction with appropriate testing pro...

Acoustic Emission monitoring during three-point load test on concrete blocks prepared using variety of glass aggregates indicates that the mode and nature of crack initiation and propagation is highly dependent on the composition and the type of aggregates. The mechanism of crack arresting and bridging can only be investigated using Acoustic Emission. The results obtained are encouraging and le...

In this work, we performed variety of tests to see the effects of network loads and latency in multiplayer online games. We applied hierarchical load testing architecture using large scale virtual clients to find out the bottlenecks of the game servers. We also investigated the effect of latency on multiplayer online games. We controlled network game packets (i.e. packet delay, packet drop rate...

Web testing is the name given to software testing that focuses on web applications. Issues such as the security of the web application, the basic functionality of the site, its accessibility to handicapped users and fully able users, as well as readiness for expected traffic and number of users and the ability to survive a massive spike in user traffic, both of which are related to load testing...