This paper shows ICT operational models to view the actual usage of teachers' desk systems (TDS). The TDS which consist of several ICT devices have been developed and installed to give effective lectures in classrooms of our university. In this study, authors construct ICT operational models from the execution logs of the TDS, and then discuss the adequacy of their specifications and application which is implied by the models.

Abstract The NAS parallel benchmarks (NPB) are a well‐known benchmark set for high‐performance machines. Much effort has been made to implement them in High‐Performance Fortran (HPF). In previous attempts, however, the HPF versions did not include the complete set of benchmarks, and the performance was not always good. In this study, we implement all eight benchmarks of the NPB in HPF, and parallelize them using an HPF compiler that we have developed. This report describes the implementation techniques and compiler features necessary to achieve good performance. We evaluate the HPF version on the Hitachi SR2201, a distributed‐memory parallel machine. With 16 processors, the execution time of the HPF version is within a factor of 1.5 of the hand‐parallelized version of the NPB 2.3 beta. Copyright © 2002 John Wiley & Sons, Ltd.

Abstract This paper presents a set of extensions on High Performance Fortran (HPF) to make it more usable for parallelizing real‐world production codes. HPF has been effective for programs that a compiler can automatically optimize efficiently. However, once the compiler cannot, there have been no ways for the users to explicitly parallelize or optimize their programs. In order to resolve the situation, we have developed a set of HPF extensions (HPF/JA) to give the users more control over sophisticated parallelization and communication optimizations. They include parallelization of loops with complicated reductions, asynchronous communication, user‐controllable shadow, and communication pattern reuse for irregular remote data accesses. Preliminary experiments have proved that the extensions are effective at increasing HPF's usability. Copyright © 2002 John Wiley & Sons, Ltd.

We present a technique for recognizing facial expressions from image sequences. The technique uses muscle-based feature models for tracking facial features. Since the feature models are constructed with a small number of parameters and are deformable in the limited range and directions, each search space for a feature can be limited. The technique estimates muscular contractile degrees for classifying six principal facial expressions. The contractile vectors are obtained from the deformations of facial muscle models. Similarities are defined between those vectors and representative vectors of principal expressions and are used for determining facial expressions.

In practical problems, such as the relaxation methods used to solve partial differential equations, a DOACROSS loop nest often appears.It is characterized by loop-carried dependence, which require interprocessor communication within

A new cell loss recovery method is proposed for use with the virtual paths (VPs) of asynchronous transfer mode (ATM) networks. Its advantages over conventional methods on virtual circuits include reduced coding/decoding delays and facility sharing. In addition to its consecutive cell loss compensation ability, another feature of this method is that cell loss compensation facilities are only required at VP terminating nodes. Performance estimations show a large reduction in cell loss rate.>

A cell loss recovery method to be applied to the virtual paths (VPs) of asynchronous transfer mode (ATM) networks is introduced. The method uses forward error correction (FEC). Its advantages over conventional methods on virtual circuits (VCs) include reduced coding/decoding delays and facility sharing. In addition to consecutive cell loss compensation, another feature of this method is that cell loss compensation facilities are only required at VP terminating nodes. When a cell is discarded due to buffer overflow, successive cells also tend to be discarded. Performance estimations show an outstanding reduction in cell loss rate.>

An analysis of the correction schemes for multistage lot-production systems is given for an extension of the discussion in earlier studies. The methodology which will be outlined is classified into two areas: 1) maintenance of the parallel lot-production system and 2) maintenance of the serial lot-production system. Although this study has a specific viewpoint, it claims that the function of sampling inspection can be translated into the measure of process control beyond its original purpose.