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NC Applications—its Present and Future in Singapore's Industries

International Journal of Operations & Production Management 1984年第1期4卷 12-17页

作者： Khong Heng Poh Currently Director and Division Manager of Nordskog‐Diethelm Pte Ltd. a company specialising in the manufacture of aluminium and stainless steel products. Graduated in Mechanical Engineering from the University of Manchester Institute of Science and Technology UMIST in 1968. Served an apprenticeship with Aveling‐Barford Ltd. UK. now Special Vehicles Division of British Leyland. Was engaged in research work at UMIST on the application design and testing of NC machine tools. This was sponsored by a machine tool builder and NC systems manufacturer. Awarded a Ph.D degree in Machine Tool Engineering in 1972. Thereafter was appointed Post‐Doctoral Research Fellow and later as Lecturer to continue with the research programme and consultancy work on NC machines in connection with computer‐aided design and manufacture.

The numerically controlled machine tool has become a very topical subject due to the current emphasis on increasing productivity and upgrading of manufacturing industry. This paper reviews the current applications of NC machine tools in Singapore. It also takes a look at the future directions which NC is likely to develop, particularly in the area of computer aided manufacture, and examines the role of the production engineer within this new environment.

关键词： Singapore Machinery computers CAM

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Prediction of novel precursor miRNAs using a context-sensitive Hidden Markov Model (CSHMM)

Prediction of novel precursor miRNAs using a context-sensiti...

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8th Asia-Pacific Bioinformatics Conference, APBC 2010

作者： Agarwal, Sumeet Vaz, Candida Bhattacharya, Alok Srinivasan, Ashwin Department of Physics Systems Biology Doctoral Training Centre University of Oxford Parks Road Oxford OX1 3PU United Kingdom Center for Computational Biology and Bioinformatics School of Information Technology Jawaharlal Nehru University New Delhi 110067 India School of Life Sciences Jawaharlal Nehru University New Delhi 110067 India Oxford University Computing Laboratory Wolfson Building Parks Road Oxford OX1 3QD United Kingdom IBM India Research Lab. 4-C Vasant Kunj Institutional Area Phase II Vasant Kunj New Delhi 110070 India School of Computer Science and Engineering Centre for Health Informatics University of New South Wales Sydney Australia

Background: It has been apparent in the last few years that small non coding RNAs (ncRNA) play a very significant role in biological regulation. Among these microRNAs (miRNAs), 22-23 nucleotide small regulatory RNAs, have been a major object of study as these have been found to be involved in some basic biological processes. So far about 706 miRNAs have been identified in humans alone. However, it is expected that there may be many more miRNAs encoded in the human genome. In this report, a "context-sensitive" Hidden Markov Model (CSHMM) to represent miRNA structures has been proposed and tested extensively. We also demonstrate how this model can be used in conjunction with filters as an ab initio method for miRNA identification. Results: The probabilities of the CSHMM model were estimated using known human miRNA sequences. A classifier for miRNAs based on the likelihood score of this "trained" CSHMM was evaluated by: (a) cross-validation estimates using known human sequences, (b) predictions on a dataset of known miRNAs, and (c) prediction on a dataset of non coding RNAs. The CSHMM is compared with two recently developed methods, miPred and CID-miRNA. The results suggest that the CSHMM performs better than these methods. In addition, the CSHMM was used in a pipeline that includes filters that check for the presence of EST matches and the presence of Drosha cutting sites. This pipeline was used to scan and identify potential miRNAs from the human chromosome 19. It was also used to identify novel miRNAs from small RNA sequences of human normal leukocytes obtained by the Deep sequencing (Solexa) methodology. A total of 49 and 308 novel miRNAs were predicted from chromosome 19 and from the small RNA sequences respectively Conclusion: The results suggest that the CSHMM is likely to be a useful tool for miRNA discovery either for analysis of individual sequences or for genome scan. Our pipeline, consisting of a CSHMM and filters to reduce false positives shows promise as

关键词： RNA

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Research of College English Online Course Based on Cloud Computing and Exploitation for Multimedia Asian information Processing

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ACM Transactions on Asian and Low-Resource Language information Processing 1000年

作者： Hongfang Xiao Sathishkumar V E Adhiyaman Manickam Hunan University of Finance and Economics Changsha 410205 Hunan China Post Doctoral Researcher Department of Information and Communication Engineering Sunchon National University Suncheon Republic of Korea Post Doctoral Researcher Research Institute for Future Media Computing College of Computer Science and Software Engineering Shenzhen University Shenzhen China

In today's techno world,teachers worldwide can learn the world-famous masterclasses and access all sorts of courses for school teachers. Learners have more learning opportunities based on the excellent sharing of resources. Technical support is provided in developing the Fuzzy Integrated Cloud Computing Framework (FICCF) to develop Online Courses. This paper explores the educational capabilities of cloud computing, the real-time contact between teachers and students, studying, and heterogeneous terminal access to track evaluation-based fuzzy variables. It addresses the benefits of open-ended modes, creating an English course design system in a cloud-based environment, modifying lecture mode, and reforming the English course design mode. The experimental result shows that the proposed cloud computing framework has better efficiency in developing and promoting English online *** self-learning systems make it possible to provide the best possible learning environment. It ensures that sensitive data generated by an application is deleted, and this feature ensures accuracy.

关键词： Education Technical support Teaching of English Online Courses open-ended modes Multimedia Asian information processing self-learning systems

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Journal of Open Source Software (JOSS): Design and first-year review

arXiv

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arXiv 2017年

作者： Smith, Arfon M. Niemeyer, Kyle E. Katz, Daniel S. Barba, Lorena A. Githinji, George Gymrek, Melissa Huff, Kathryn D. Madan, Christopher R. Mayes, Abigail Cabunoc Moerman, Kevin M. Prins, Pjotr Ram, Karthik Rokem, Ariel Teal, Tracy K. Guimera, Roman Valls Vanderplas, Jacob T. Data Science Mission Office Space Telescope Science Institute BaltimoreMD United States School of Mechanical Industrial and Manufacturing Engineering Oregon State University CorvallisOR United States National Center for Supercomputing Applications & Department of Computer Science Department of Electrical and Computer Engineering School of Information Sciences University of Illinois at Urbana–Champaign UrbanaIL United States Department of Mechanical & Aerospace Engineering George Washington University WashingtonDC United States KEMRI–Wellcome Trust Research Programme Kilifi Kenya Departments of Medicine & Computer Science and Engineering University of California San DiegoCA United States Department of Nuclear Plasma and Radiological Engineering University of Illinois at Urbana–Champaign UrbanaIL United States School of Psychology University of Nottingham Nottingham United Kingdom Mozilla Foundation TorontoON Canada MIT Media Lab Massachusetts Institute of Technology CambridgeMA United States Trinity Centre for Bioengineering Trinity College University of Dublin Dublin Ireland University of Tennessee Health Science Center MemphisTN United States University Medical Centre Utrecht Utrecht Netherlands Berkeley Institute for Data Science University of California Berkeley BerkeleyCA United States eScience Institute University of Washington SeattleWA United States Data Carpentry DavisCA United States University of Melbourne Centre for Cancer Research University of Melbourne Melbourne Australia

This article describes the motivation, design, and progress of the Journal of Open Source Software (JOSS). JOSS is a free and open-access journal that publishes articles describing research software. It has the dual goals of improving the quality of the software submitted and providing a mechanism for research software developers to receive credit. While designed to work within the current merit system of science, JOSS addresses the dearth of rewards for key contributions to science made in the form of software. JOSS publishes articles that encapsulate scholarship contained in the software itself, and its rigorous peer review targets the software components: functionality, documentation, tests, continuous integration, and the license. A JOSS article contains an abstract describing the purpose and functionality of the software, references, and a link to the software archive. The article is the entry point of a JOSS submission, which encompasses the full set of software artifacts. Submission and review proceed in the open, on GitHub. Editors, reviewers, and authors work collaboratively and openly. Unlike other journals, JOSS does not reject articles requiring major revision;while not yet accepted, articles remain visible and under review until the authors make adequate changes (or withdraw, if unable to meet requirements). Once an article is accepted, JOSS gives it a digital object identifier (DOI), deposits its metadata in Crossref, and the article can begin collecting citations on indexers like Google Scholar and other services. Authors retain copyright of their JOSS article, releasing it under a Creative Commons Attribution 4.0 International License. In its first year, starting in May 2016, JOSS published 111 articles, with more than 40 additional articles under review. JOSS is a sponsored project of the nonprofit organization NumFOCUS and is an affiliate of the Open Source Initiative (OSI). Copyright © 2017, The Authors. All rights reserved.

关键词： Abstracting

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Utilization of GPS Technology in The Maritime Sector on Motor Sailing Yachts

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IOP Conference Series: Earth and Environmental science 2021年第1期698卷

作者： Melani Quintania Danny Faturachman T. Husain Bayu Pasupati Ahmad Taufik Management Department Faculty of Economy Darma Persada University Indonesia Marine Engineering Department Faculty of Marine Technology Darma Persada University Indonesia Information System Department School of Management and Computer Science STMIK Widuri Jakarta – Indonesia and Student of Doctoral Management YAI Persada University Indonesia Student of Doctoral Management YAI Persada University Indonesia Information System Department School of Management and Computer Science STMIK Widuri Jakarta – Indonesia

The utilization of technology only aims to be fast, precise, and accurate in each implementation and find a better solution at that time in several sectors. This study aims to identify the use of Global Positioning Technology (GPS) technology to track the position of the motor sailing yachts, specifically with the features used on a device or smart-phone during a trip or expedition. This research uses a type of applied research to solve problems that are faced clearly, and the results can be used as a basis for solving corrective steps. The results found that GPS-Technology on motor sailing yachts in 'Pelayaran Rakyat' maritime can receive coordinates point and then send these coordinates to the vessel-tracking systems to determine the position of the motor sailing yachts between users.

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Scalable authentication and optimal flooding in a quantum network

arXiv

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arXiv 2021年

作者： Solomons, Naomi R. Fletcher, Alasdair I. Aktas, Djeylan Venkatachalam, Natarajan Wengerowsky, Sören Lončarić, Martin Neumann, Sebastian P. Liu, Bo Samec, Željko Stipčević, Mario Ursin, Rupert Pirandola, Stefano Rarity, John G. Joshi, Siddarth Koduru Quantum Engineering Technology Labs Quantum Engineering Centre for Doctoral Training Centre for Nanoscience and Quantum Information University of Bristol Bristol United Kingdom Department of Computer Science University of York YorkYO10 5GH United Kingdom Quantum Engineering Technology Labs H. H. Wills Physics Laboratory Department of Electrical and Electronic Engineering University of Bristol Merchant Venturers Building Woodland Road BristolBS8 1UB United Kingdom Vienna Austria Barcelona Institute of Science and Technology Castelldefels Barcelona08860 Spain Photonics and Quantum Optics Research Unit Center of Excellence for Advanced Materials and Sensing Devices Rud¯er Bošković Institute Zagreb Croatia College of Advanced Interdisciplinary Studies NUDT Changsha410073 China

The global interest in quantum networks stems from the security guaranteed by the laws of physics. Deploying quantum networks means facing the challenges of scaling up the physical hardware and, more importantly, of scaling up all other network layers and optimally utilising network resources. Here we consider two related protocols, their experimental demonstrations on an 8-user quantum network test-bed, and discuss their usefulness with the aid of example use cases. First, an authentication transfer protocol to manage a fundamental limitation of quantum communication – the need for a pre-shared key between every pair of users linked together on the quantum network. By temporarily trusting some intermediary nodes for a short period of time ( Copyright © 2021, The Authors. All rights reserved.

关键词： Network layers

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E-crm information System for Tapis Lampung SMEs

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Journal of Physics: Conference Series 2019年第1期1338卷

作者： Damayanti Warsito Meilinda P Manurung S Sembiring Doctoral Student Faculty of Mathematics and Natural Sciences University of Lampung Indonesia Department of Information System Faculty of Engineering and Computer Science Universitas Teknokrat Indonesia Physics Department Faculty of Mathematics and Natural Sciences University of Lampung Indonesia

Companies must have a strong competitive strategy in the market in meeting customer needs, it is necessary an information system that applies the method of customer relationship management. Target for this research were SMEs Tapis in Lampung Indonesia. Tapis Lampung is one of the clothes used in Lampung Indonesia culture. Tapis Lampung must be introduced and disseminated, not only in Indonesia, but in overseas. Problem in this study is product orders are still coming directly to the location and via telephone, as well as product marketing through Instagram media. Orders are recorded in the book, so that data processing is less effective and efficient. There is no consumer database to see the number of existing customers, do not yet have communication and service good to consumers. The purpose of this study is to produce an information system application program using web-based E-crm method which is a strategy to increase sales, expand marketing and improve services to consumers. The application of web-based CRM methods in Tapis Lampung SMEs is important so that they can open sales opportunities globally, and have a good relationship with consumers because they can provide services to consumers that are more effective and efficient.

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Corrigendum to 'Data to evaluate the usability of an interactive system based on a judgment-based model' [Data in Brief 43 (2022) 1-14/ 108418]

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Data in brief 2022年 43卷 108472页

作者： Adeleh Asemi Asefeh Asemi Department of Software Engineering Faculty of Computer Science and Information Technology Universiti Malaya 50603 Kuala Lumpur Malaysia. Doctoral School of Economics Business & Informatics Corvinus University of Budapest 1093 Budapest Fovam ter 8. Hungary.

[This corrects the article DOI: 10.1016/***.2022.108418.].

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Modelling and reducing fuel flow pulsation of a fuel-metering system during pump mode switching in a turbofan engine

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IOP Conference Series: Earth and Environmental science 2019年第5期240卷

作者： S Masuda F Shimizu M Fuchiwaki K Tanaka Control Systems Engineering Department Research & Engineering Division Aero Engines Space & Defense Business Area IHI Corporation 229 Tonogaya Mizuho-machi Nishitama-gun Tokyo 190-1297 Japan Department of Computer Science and Systems Engineering Doctoral Program Graduate School of Computer Science and Systems Engineering Kyushu Institute of Technology 680-4 kawazu Iizuka-shi Fukuoka 820-8502 Japan Department of Mechanical Information Science and Technology School of Computer Science and Systems Engineering Kyushu Institute of Technology 680-4 kawazu Iizuka-shi Fukuoka 820-8502 Japan

In this research, the transient characteristics of a new type fuel metering system for aircraft turbofan engines using two types of pumps, a gear pump and a centrifugal pump, were studied by modelling and simulation. This new fuel metering system is capable of hydraulically unloading the operating state of each pump by the pump mode switching mechanism within the permissible range of the pump rotation speed and the fuel flow rate and it is possible to reduce the fuel temperature rise due to the pressure loss in the circuit in the operation region of the entire fuel system. In addition to this, by using a small centrifugal pump that can realize high discharge flow rate, it is possible to reduce weight compared to the conventional fuel system. However, when the pump mode is switched, unexpected fluctuation in the fuel flow rate can occur when a large change in the inlet pressure of the system occurs, the pressure control unit cannot follow the change, and the transient phenomenon cannot be suppressed. At this time, the pressure waveform generated at the time of changing the pump mode includes a high frequency component such that the pressure control unit, which plays a role of keeping the metering valve differential pressure constant, cannot follow up. Therefore, in this paper, we focused on the frequency of the pressure change waveform when the pump mode was changed and studied the model of the fuel system inlet pressure in the gear pump mode. Based on that model, we propose a method to reduce the frequency characteristics of the pressure change occurring at the time of pump mode change.

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A Moment-Based Method for Large-Scale Generalized Eigenvalue Problems

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Applied Numerical Analysis & Computational Mathematics 2004年第2期1卷

作者： Tetsuya Sakurai Hiroto Tadano Yuichi Inadomi Umpei Nagashima Department of Computer Science University of Tsukuba Tsukuba 305-8573 Japan Core Research for Evolutional Science and Technology Japan (CREST) Doctoral Program of Systems and Information Engineering University of Tsukuba Tsukuba 305-8573 Japan Grid Technology Research Center National Institute of Advanced Industrial Science and Technology Tsukuba 305-8568 Japan

In this paper we consider a method for finding several eigenvalues and corresponding eigenvectors of large-scale generalized eigenvalue problems. In this method, a small matrix pencil that has only the desired eigenvalues is derived using complex moments obtained via numerical integration. Since the process to derive the moments can be performed in parallel and we do not need to exchange data between processes, the presented method is suitable for master-worker programming models. We have implemented and tested the proposed method in a grid RPC (remote procedure call) system. Numerical examples illustrate the properties of our approach. (© 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

关键词： Eigenvalue problems moment-based method parallel algorithm

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