作者：
Akishin, A. V.Computing Center
Institute for Applied and Numerical Mathematics University Karlsruhe 76128 Karlsruhe Germany Computer Science Department University of Geneva CH-1211 Geneva 4 Switzerland
We consider problems on transformations of principal ideal rings incompatible with some epimorphisms of a given ring. We introduce the notion of a maximally incompatible transformation and describe all maximally incom...
详细信息
We consider problems on transformations of principal ideal rings incompatible with some epimorphisms of a given ring. We introduce the notion of a maximally incompatible transformation and describe all maximally incompatible transformations of the principal ideals ring A by a homomorphism A -> Am, where m is some ideal of the ring A.
The first annual workshop on the role of AI in ambient intelligence was held in Riva de Garda, Italy, on August 29, 2006. The workshop was colocated with the European Conference on Artificial Intelligence (ECAI 2006)....
详细信息
Sorting is an integral part of numerous algorithms and, therefore, efficient sorting support is needed by many applications. This paper presents a parallel sorting library providing efficient implementations of parall...
详细信息
Characterizing the communication behavior of large-scale applications is a difficult and costly task due to code/system complexity and their long execution times. An alternative to running actual codes is to gather th...
详细信息
For a graph G and an integer t we let m c ct (G) be the smallest m such that there exists a coloring of the vertices of G by t colors with no monochromatic connected subgraph having more than m vertices. Let F be any ...
We present interactive techniques for identifying and extracting features in function fields. Function fields map points in n-dimensional Euclidean space to 1-dimensional scalar functions. Visual feature identificatio...
详细信息
This paper proposes a self-organizing, cluster based protocol- Multi-path, Multi-hop Hierarchical Routing (MuMHR) - for use in large scale, distributed Wireless Sensor Networks (WSN). With MuMHR, robustness is achieve...
详细信息
Electronics densification is continuing at an unrelenting pace at the server, rack, and facility level. With increasing facility density levels, airflow management has become a major challenge and concern. In an effor...
详细信息
Electronics densification is continuing at an unrelenting pace at the server, rack, and facility level. With increasing facility density levels, airflow management has become a major challenge and concern. In an effort to deal with the resulting thermal management challenges, manufacturers are increasingly turning to liquid cooling as a practical solution. The majority of manufacturers have turned to liquid-cooled enclosed racks or rear-door heat exchangers, in which chilled water is delivered to the racks. Some manufacturers are now looking to cold plate cooling solutions that take the heat directly off problem components, such as the CPUs, to get it directly out of the facility. This paper describes work done at the Pacific Northwest National Labs (PNNL) under a department of Energy-funded program titled "Energy Smart Data Center." An 8.2 kW (27,980 Btu/h) rack of HP rx2600 2U servers has been converted from air-cooling to liquid spray cooling (CPUs only). The rack has been integrated into PNNL's main cluster and subjected to a suite of acceptance tests. Under the testing, the spray-cooled CPUs ran an average of 10°C (18°F) cooler than the air-cooled CPUs. Other peripheral devices, such as the memory D1MMs, ran an average of 8°C (14.4°F) cooler, and the power pod board was measured at 15°C(27°F) cooler. Since installation in July 2005, the rack has been undergoing a one-year uptime and reliability investigation. As part of the investigation, the rack has been subjected to monthly robustness testing and ongoing performance evaluation while running applications such as High Performance Linpack, parts of the NASA NPB-2 Benchmark Suite, and NW Chem. The rack has undergone three months' worth of robustness testing with no major events. Including the robustness testing, the rack uptime is at 95.54% over 299 days. While undergoing application testing, no computational performance differences have been observed between the liquid-cooled and standard air-cooled racks. A sm
This paper describes the design and implementation of a new interface prototype for live music mixing. The ColorDex system employs a completely new operational metaphor which allows the mix DJ to prepare up to six tra...
详细信息
ISBN:
(纸本)9781450378376
This paper describes the design and implementation of a new interface prototype for live music mixing. The ColorDex system employs a completely new operational metaphor which allows the mix DJ to prepare up to six tracks at once, and perform mixes between up to three of those at a time. The basic premises of the design are: 1) Build a performance tool that multiplies the possible choices a DJ has in respect in how and when tracks are prepared and mixed;2) Design the system in such a way that the tool does not overload the performer with unnecessary complexity, and 3) Make use of novel technology to make the performance of live music mixing more engaging for both the performer and the audience. The core components of the system are: A software program to load, visualize and playback digitally encoded tracks;the HDDJ device (built chiefly out of a repurposed hard disk drive), which provides tactile manipulation of the playback speed and position of tracks;and the Cubic Crossfader, a wireless sensor cube that controls of the volume of individual tracks, and allows the DJ to mix these in interesting ways.
暂无评论