We constructed a multipurpose network system and connected our digital fluorography(DF)system to it. A PC- computer was used as a server and transfer protocol(FTP)server. Still images generated by the DF system were transferred from the gateway computer connected to the DF system to the server with a DICOM storage service. Images can be easily retrieved and modified by utilizing the functions that the network system makes it possible to share, such as the -sharing system and the on-line viewer of the WWW browser. Thus, it should be easy to expand the network and improve its quality in the future. Our network can also be easily and effectively connected to other hospital network systems.

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愛媛大学医学部麻酔・蘇生学講座では, 日本で最初に麻酔学関連のホームページを公開したのに引き続いてインターネット上でのペインクリニック・メモの作製を始めた. 掲載する項目はアルファベット順に並べて, みやすくした. 項目数は, aciclovir からVAS (visual analogue scale) までの55項目である. 一部では英語版も作製した. これらの作製にあたり, 薬は薬でできるだけ書式を統一するように心がけた. 各項目の作製には, まず, テキスト形式で文章を保存し, インターネットに掲載するために, html用の特殊なタグを加え, これををOSとするコンピュータに upload し, さらにmvコマンドを使用して, ペインクリニック・メモ用の directory に移し, ファイル名をhtmlに変更した. この後, ペインクリニック・メモの directory に入り, 目次のファイルを開き, この画面に入力したいファイル名をリンクさせ, 保存した.
Webで作製した項目は, hypnos 内にある関連ファイルにリンクすることができる. また, web site では新しく開発された概念や治療法をいち早く掲載できるという利点がある.

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Experimental results on document server system employing multi-vendor remote terminals with X-window system is reported. A new program dealing with image coded documents was developed on a workstation with rewritable optical disk subsystem. Ethemet and TCP/IP were also emploied as a communication protocol. The X-window systems installed on both server and remote terminal operated as if a transparent I/O buss from a image csded document server to the CRT on a remote terminal. A browsing speed 4 second/page for 4 dots/mm documents and that 2 second/page for 2 dots/mm documents were obtaind.

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A journaling

system is a system that records information about pending updates to the system before committing the updates. This mechanism raises the reliability of the system because it enables any inconsistencies to be repaired with minimal loss of data. Since there is a tradeoff between the overhead and reliability, ext3, a journaling system commonly used by the Linux kernel, offers three journaling modes: speed-prioritized mode, reliability-prioritized mode, and intermediate mode. Unfortunately, in ext3, the journaling mode has to be set individually for each system. Thus, the granularity of the journaling mode setting is very coarse. In addition, the journaling mode must be determined at the time of mounting the system and cannot be changed without unmounting it. To resolve this problem, this paper proposes a new journaling system named dajFS (per-directory adaptive journaling system) that is able to set an appropriate journaling mode for each directory and to switch the journaling mode of a directory to another on the fly without unmounting the system. Essentially, the journaling mode that is specified for a directory applies to all files that reside directly under that directory. By using dajFS, the user can determine and set a journaling mode for each directory on the basis of the importance of files under that directory. As a result, the user can enjoy moderate granularity with the journaling mode setting.

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We constructed a small-scale picture and archiving communication system (PACS) consisting of image acquisition, transmission, storage, management, and display using the central test node (CTN) on a PC- as a digital imaging and communications in medicine (DICOM) server. The usefulness of this system was improved by connecting the relational database management system (RDBMS) to a World Wide Web (WWW) server using personal home page construction kit/form interpreter (PHP/FI) script language so that clients could communicate via the WWW server as to inquiries sent to the RDBMS connected with the CTN, and by producing a program that allows retrieval by the WWW browser. For image display, field information displayed in the results of an inquiry is consulted, and images are downloaded from the public directory using a common system with a server for the personal computer (PC) and network system (NFS) server, and displayed using OSIRIS. This system may prove useful in light of its small scale and range of use.

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For automatic CAD data exchange, a method was proposed based on data format which consists of data structures, algorithms and data. This method uses a three schema architecture which consists of an application schema, conceptual schema and physical data schema. The conceptual schema plays a role of neutral data structure between an application schema and physical data schema. An experimental system based on the above method was developed. Then a test regarding 2-D CAD data exchange was demonstrated. From the experimental results, it is recognized that the proposed method is useful for the CAD data exchange.

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National Cancer Center Research Institute has about 200 researchers. Most of them are engaged in studies of molecular biology. We established a Local Area Network System in our institute and it has been running since April 1992. This system is connected to more than 250 different instruments including 53 NEC-PCs, 122 Macintosh computers (Mac), 5 workstations. We adapted Netware 386 v3.11 on the server which is comunicating both with PCs and Macs. The CD-server contains 14 CD-ROMs including MEDLINE and DNA databases. E-mails and NetNews service system are administered by the system which was connected to Internet on October 1992.
Generally, the researchers have used microcomputers and CD-ROMs for analysis of their research data. A few reserchers have had an opportunity to use and/or VAX systems by using modem. However the system are not useful for many beginners. So, we attempted to develop the genetic information analysis system using CD-server on the network system. We wish to establish a system running on PCs and Macs which are able to automatically take in up-to-date databases collected in through Internet.

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Experimental results on a remote retrieval from a document server via an Integrated Services Digital Network (ISDN) are reported. The document server mainly consists of a workstation and a 130-mm rewritable magneto-optical disk subsystem. The experimentally measured time for retrieving one page at a remote terminal is 1.5 seconds within a 10-Mbps local-area network and 2.0 seconds within a 1.5-Mbps ISDN.

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We constructed a network in our nuclear medical facility that connected a workstation (nuclear medicine data processor), DOS/V machine and Apple Macintosh computer. Data can be transferred using a FTP (Fetch 2.1) program and are displayed using NIH Image on the Macintosh computer. Fetch 2.1, FTP program for Macintosh, performs well although it is inexpensive shareware. The NIH Image program was used to display image data on the Macintosh computer. This program is freeware distributed by the National Institutes of Health (NIH). It supports a variety of image data formats, including ACR/NEMA 2.0. Furthermore, the network was employed to shorten the time required for data conversion using FD. We can readily transfer image data to the presentation software without deterioration in image quality. In conclusion, we believe that this network decreases working time and increases data processing power.

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In order to develop the distributed database management system for total health care management on the Internet (the world wide computer network) as an infrastructure, a new distributed type network-based database management system using the electronic mail (e-mail) system was reported in this paper. The basic architecture of this system is as follows ; (1) the history management server stores only the consultation record of about 100, 000-population, (2) it also indicates the medical consultation records and health care histories (when, where, and summary of medical procedures) of the each person when it is required, (3) the facility management system stores the raw data of each person and sends it when the patient or doctor makes a request through the history management server. A model system was built using the e-mail system in an Internet environment on a * workstation as an experiment. The performance of this model was considered to be adequate for practical use since the basic facilities can be easily set up. J Epidemiol. 1995; 5 : 131-140.

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本稿では、2001年4月に筑波大学に導入された教育用計算機システムの環境の詳細について述べる。このシステムでは、アカウント管理、認証、メールサービス、ファイルサービスなどのシステムの中枢部分を

サーバが担当する一方、一般利用者が利用する端末にはWindowsを用い、初心者にも扱いやすい環境を実現している。本システムにおいてはとWindowsが密接に統合されており、利用者に対して一般的なWindowsと同等の環境を提供しつつ、による安定的な管理運用を実現している点が特長となっている。

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Edge intelligence (EI), as a combination of artificial intelligence (AI) and internet of things (IoT), is the key to realize an interconnected world of everything. EI needs to process the data collected by edge devices locally. For edge devices with insufficient computing power, a near data computing (NDC) system can provide local computing capability by adding a co-processing unit near the memory. NDC systems are extensively studied focused on the optimization of the hardware architecture but lack of universal and transparent system support. Meanwhile, we notice that non-volatile memory (NVM) plays an important role in edge intermittent computing. In this article, we propose a novel in-memory processing

system (IMPFS) based on NVM to provide general support for NDC system running on edge devices. IMPFS uses standard system interfaces and is optimized for NVM and AI application management. To verify the IMPFS, a prototype system is designed. The results showed that the IMPFS can not only provide universal support for EI but also further improve the processing speed by reducing the redundant software overhead.

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The leaking of information has increased in recent years. To address this problem, we previously proposed a function for tracing the diffusion of classified information in a guest OS using a virtual machine monitor (VMM). This function makes it possible to grasp the location of classified information and detect information leakage without modifying the source codes of the guest OS. The diffusion of classified information is caused by a

operation, child process creation, and inter-process communication (IPC). In a previous study, we implemented the proposed function for a operation and child process creation excluding IPC using a kernel-based virtual machine (KVM). In this paper, we describe the design of the proposed function for IPC on a KVM without modifying the guest OS. The proposed function traces the local and remote IPCs inside the guest OS from the outside so as to trace the information diffusion. Because IPC with an outside computer might cause information leakage, tracing the IPCs enables the detection of such a leakage. We also report the evaluation results including the traceability and performance of the proposed function.

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In this paper, we describe the details of the design and implementation of our Front-end Environment for Hands-on Activities (FEHA), which is a web-based programming environment. FEHA provides a programming environment on the web and utilizes existing

-like systems that equip a specialized programming environment as the build and runtime platform. FEHA controls the existing systems by using Secure SHell (SSH) and Rsync without any modification of the existing systems. We discuss a case study of FEHA in which it was applied to actual programming lectures at a university. In the lectures, 70% of the students completed registrations to use FEHA in about 3 min. In addition, they could understand how to use the FEHA and started submitting codes within several minutes after the registration. The case study shows that FEHA is able to provide a specialized programming environment for more than 100 students with a small amount of effort from the instructor and system administrator.

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The hardware chosen for fMRI data analysis may depend on the platform already present in the laboratory or the supporting software. In this study, we ran SPM99 software on multiple platforms to examine whether we could analyze fMRI data by SPM99, and to compare their differences and limitations in processing fMRI data, which can be attributed to hardware capabilities. Six normal right-handed volunteers participated in a study of hand-grasping to obtain fMRI data. Each subject performed a run that consisted of 98 images. The run was measured using a gradient echo-type echo planar imaging sequence on a 1.5T apparatus with a head coil. We used several personal computer (PC), and Linux machines to analyze the fMRI data. There were no differences in the results obtained on several PC, and Linux machines. The only limitations in processing large amounts of the fMRI data were found using PC machines. This suggests that the results obtained with different machines were not affected by differences in hardware components, such as the CPU, memory and hard drive. Rather, it is likely that the limitations in analyzing a huge amount of the fMRI data were due to differences in the operating system (OS).

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Recently, the need for multimedia devices, such as mobile phones, digital TV, PMP, digital camcorders, digital cameras has increased. These devices provide various services for multimedia manipulation, allowing multimedia contents playback, multimedia editing, etc. Additionally, digital TV provides a recorded multimedia copy to a portable USB disk. However, Linux Ext3 system, as employed by these devices, has a lot of drawbacks, as it required a considerable amount of time and disk I/Os to store large-size edited multimedia files, and it is hard to access for typical PC users. Therefore, in this paper a design and implementation of an amortized Ext3 with FWAE (Fast Writing-After-Editing) for WinXP-based multimedia applications is described. The FWAE is a fast and efficient multimedia editing/storing technique for the Ext3 that exploits inode block pointer re-setting and shared data blocks by simply modifying metadata information. Individual experiments in this research show that the amortized Ext3 with FWAE for WinXP not only dramatically improves written performance of the Ext3 by 16 times on average with various types of edited multimedia files but also notably reduces the amount of consumed disk space through data block sharing. Also, it provides ease and comfort to use for typical PC users unfamiliar with Linux OS.

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This article is a summary of basic system administration for configuring client-server computers connected to the Internet. Thisarticle assumes that the reader has some basic knowledge of the operating system. The goal of this summary is to provideresearchers in the academic and corporate research environments a short handbook, which will allow them to maintain a basic network ofworkstations, minimize disk utilization, optimize network cpu performance, and to better disseminate information to other researchers.This also describes the procedures to install most free software, including X-windows, FTP and HTTP information servers and Mosaicclients. The document focuses specifically on the Sparc/SunOS based platforms, but should be useful in administering other types ofworkstations. This handbook is not designed to replace the many volume sets of documentation provided by vendors, but rather, it listshelpful tips that may be scattered throughout the documentation. The main goal of providing these system administration procedures isto encourage better networking in the research environment. By following the steps in this handbook, a research group should be able toinstall many of the network servers to provide freer access to information at their site. This information can be beneficial to the otherresearchers at the local site or to the rest of the computing public. This handbook describes how to install and use the Mosaic Internetbrowser. As a tutorial, users will be shown how to read this document on-line with Mosaic. Lastly, this article announces thebeginning of on-line articles for Thermal Science and Engineering which is a Journal of the Heat Transfer Society of Japan.

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