151,427 research outputs found

    Energy-efficient through-life smart design, manufacturing and operation of ships in an industry 4.0 environment

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    Energy efficiency is an important factor in the marine industry to help reduce manufacturing and operational costs as well as the impact on the environment. In the face of global competition and cost-effectiveness, ship builders and operators today require a major overhaul in the entire ship design, manufacturing and operation process to achieve these goals. This paper highlights smart design, manufacturing and operation as the way forward in an industry 4.0 (i4) era from designing for better energy efficiency to more intelligent ships and smart operation through-life. The paper (i) draws parallels between ship design, manufacturing and operation processes, (ii) identifies key challenges facing such a temporal (lifecycle) as opposed to spatial (mass) products, (iii) proposes a closed-loop ship lifecycle framework and (iv) outlines potential future directions in smart design, manufacturing and operation of ships in an industry 4.0 value chain so as to achieve more energy-efficient vessels. Through computational intelligence and cyber-physical integration, we envision that industry 4.0 can revolutionise ship design, manufacturing and operations in a smart product through-life process in the near future

    Gender differences in information technology usage: a U.S.-Japan comparison

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    This study examines whether there are differences in men’s and women’s use of computers and the Internet in the United States and Japan and how any such gender gaps have changed over time. The authors focus on these two countries because information technology is widely used in both, but there are substantial differences in institutions and social organizations. They use microdata from several surveys during the 1997–2001 period to examine differences and trends in computer and Internet usage in the two countries. Their results indicate that there were significant gender differences in computer and Internet usage in both countries during the mid-1990s. By 2001, these gender differences had disappeared or were even reversed in the United States but remained in Japan. People not currently working have lower levels of IT use and skills in both countries regardless of gender, but working women in Japan have lower levels of IT use and skills than working men, a difference that generally does not occur in the United States. This finding suggests that employment status per se does not play a large role in the gender gap in Japan, but type of employment does. The prevalence of nonstandard employment among female workers in Japan accounts for much of the gender gap in IT use and skills in that country.

    Deep Space Network information system architecture study

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    The purpose of this article is to describe an architecture for the Deep Space Network (DSN) information system in the years 2000-2010 and to provide guidelines for its evolution during the 1990s. The study scope is defined to be from the front-end areas at the antennas to the end users (spacecraft teams, principal investigators, archival storage systems, and non-NASA partners). The architectural vision provides guidance for major DSN implementation efforts during the next decade. A strong motivation for the study is an expected dramatic improvement in information-systems technologies, such as the following: computer processing, automation technology (including knowledge-based systems), networking and data transport, software and hardware engineering, and human-interface technology. The proposed Ground Information System has the following major features: unified architecture from the front-end area to the end user; open-systems standards to achieve interoperability; DSN production of level 0 data; delivery of level 0 data from the Deep Space Communications Complex, if desired; dedicated telemetry processors for each receiver; security against unauthorized access and errors; and highly automated monitor and control

    A review of data visualization: opportunities in manufacturing sequence management.

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    Data visualization now benefits from developments in technologies that offer innovative ways of presenting complex data. Potentially these have widespread application in communicating the complex information domains typical of manufacturing sequence management environments for global enterprises. In this paper the authors review the visualization functionalities, techniques and applications reported in literature, map these to manufacturing sequence information presentation requirements and identify the opportunities available and likely development paths. Current leading-edge practice in dynamic updating and communication with suppliers is not being exploited in manufacturing sequence management; it could provide significant benefits to manufacturing business. In the context of global manufacturing operations and broad-based user communities with differing needs served by common data sets, tool functionality is generally ahead of user application

    Multinational perspectives on information technology from academia and industry

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    As the term \u27information technology\u27 has many meanings for various stakeholders and continues to evolve, this work presents a comprehensive approach for developing curriculum guidelines for rigorous, high quality, bachelor\u27s degree programs in information technology (IT) to prepare successful graduates for a future global technological society. The aim is to address three research questions in the context of IT concerning (1) the educational frameworks relevant for academics and students of IT, (2) the pathways into IT programs, and (3) graduates\u27 preparation for meeting future technologies. The analysis of current trends comes from survey data of IT faculty members and professional IT industry leaders. With these analyses, the IT Model Curricula of CC2005, IT2008, IT2017, extensive literature review, and the multinational insights of the authors into the status of IT, this paper presents a comprehensive overview and discussion of future directions of global IT education toward 2025

    日本人大学生を対象にした英語学習ウエブアプリケーションの導入

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    This case study examines the introduction of web-based apps to Japanese university students for skill-based English learning. The focus is on 32 students from the International Studies and Education departments at a private Japanese university. The course was an elective English course titled,“ Current Events English.” In class, activities consisted of analog speaking activities from the textbook. However, web-based applications were introduced to support class preparation, the midterm, and the final project. The Memrise app for vocab learning was optional for class preparation. Use of Google Classroom was required for accessing the initial class documents, and Cambridge Write & Improve was required or the final project. Data was collected from the applications as well as from student surveys. The findings provide insight into the efficacy of webbased applications for language learning in Japan. It also contributes to the body of knowledge regarding the reticence of Japanese university students to adopt digital modes of language learning.本事例研究では日本人大学生を対象にした英語学習のためのウエブアプリケーション(WA) の適用可能性を明らかにする。対象は国際教育学科と教育経営学科の学生32人である。時事英語(選択教科コース)では主に教科書からのアナログ・スピーキング・アクティビティーを行ったが,授業の事前準備,中間発表,およびファイナルプロジェクトために三つのWAを導入した。学生主体の 事前準備のためにMemriseの語彙学習アプリを使用し,授業のシラバスおよびプリントを手に入れるためにグーグル・クラスルームを必要とした。ファイナルプロジェクトのためにCambridge Write & Improveも必要とした。WAと学生アンケートからデータを収集して分析した。本研究の結果は,日本人学生が言語学習にWAを使用することに控えめであるにもかかわらず,WAが語学学習には有効であるという知識体系を得られた
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