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CURRENT COST ACCOUNTING RATIOS AS PREDICTORS OF BUSINESS FAILURE: THE SWEDISH CASE

Journal of Business Finance & Accounting 1990年第1期17卷 137-160页

作者： Skogsvik, Kenth The author is from the Department of Accounting and Finance Stockholm School of Economics Sweden. The article is based on his Ph.D. dissertation. He wishes to thank his advisor Professor Sven‐Erik Johansson for encouragement and advice. Also he is grateful for many helpful comments by Professor Nils Hakansson (University of California Berkeley) Matti Kinnunen and Eva Widhem. The computer programming for the project was executed by Matti Kinnunen and Eva Widhem. Financial support for the research was provided by Bankforskningsinstitutet and Carl‐Berthel Nathhorsts Vetenskapliga Stiftelse.

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Syntactic and Subjective Complexity: A Simple Test of a Two‐dimensional Language Model

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Geographical Analysis 1975年第3期7卷 285-293页

作者： Betak, John F. The author gratefully acknowledges the support of N.R.C. Grant A8231 and the Federal Department of Communications Grant OIGR.36100-2-0060. The author also wishes to thank Messrs. W. Bramberger and D. Coleman for writing the computer program Dr. D. L. Anderson for comments and assistance on programming and analysis and Ms. Norma Zabel for assistance in collecting data. This work was completed while the author was assistant professor of geography at McMaster University.

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Software cost estimation using economic production models

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Journal of Management Information Systems 1998年第1期15卷 143-163页

作者： Hu, Q. Plant, R.T. Hertz, D.B. Dept. of Decis. and Info. Systems Florida Atlantic University United States University of Miami FL United States Dept. of Comp. Information Systems University of Miami Coral Gables FL United States University of Liverpool United Kingdom Programming Research Group Oxford University Wadham College Oxford United Kingdom Department of Computer Science Univ. of Wolverhampton in England Templeton College Oxford United Kingdom Dept. of Comp. Information Systems University of Miami United States Columbia University CEO Identification Technol. Intl. Inc. United States McKinsey and Co. New York City NY United States

One of the major difficulties in controlling software development project cost overruns and schedule delays has been developing practical and accurate software cost models. Software development could be modeled as an economic production process and we therefore propose a theoretical approach to software cost modeling. Specifically, we present the Minimum Software Cost Model (MSCM), derived from economic production theory and systems optimization. The MSCM model is compared with other widely used software cost models, such as COCOMO and SLIM, on the basis of goodness of fit and quality of estimation using software project data sets available in the literature. Judged by both criteria, the MSCM model is comparable to, if not better than, the SLIM, and significantly better than the rest of the models. In addition, the MSCM model provides some insights about the behavior of software development processes and environment, which could be used to formulate guidelines for better software project management polic es and practices.

关键词： Economic production theory Software cost estimation Software cost models Software production Software project management

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Conceptual model of the VR module for “Virtual plaza for interactive presentation of Bulgarian cultural heritage”

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AIP Conference Proceedings 2019年第1期2172卷

作者： Angel Bachvarov Dimo Chotrov Yordan Yordanov Zlatka Uzunova 1Technical University Sofia Faculty of Mechanical Engineering Department Automation of Discrete Production Engineering Bulgaria 2Technical University Sofia Faculty of Computer Systems and Technologies Department Programming and Computer Technologies Bulgaria 3Technical University Sofia Faculty of German Engineering Education and Industrial Management Bulgaria 4Research and Development and Innovation Consortium Virtual and Augmented Reality Laboratory Bulgaria

In the last years, Virtual Reality (VR) has been established itself as a highly promising media technology for reconstruction and presentation of cultural heritage sites to a wide audience. Virtual Reality enables not only an exploration of a single artefact but of many virtual objects spatially and temporally arranged into a single scene. The users enter an artificially created space and get a feeling of being a part of it. They can perceive and interact with the objects in the virtual environment in natural way. In this paper we propose a conceptual model of the VR module for the “Virtual Plaza for Immersive Representation of Bulgarian Cultural Heritage Sites”. It contains an analysis of the possible input data and the developed workflows to help experts from the cultural heritage domain to implement various scenarios for presentation of single artefacts and complete scene par of cultural heritage site using the benefits of Virtual Reality as visualization medium.

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S--Ideals: A Study in Commutative and Noncommutative Rings

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Journal of Mathematics 2024年第1期2024卷

作者： Alaa Abouhalaka Hatice Çay Bayram Ali Ersoy Department of Mathematics Çukurova University Balcalı Adana 01330 Turkey cu.edu.tr Computer Programming IMU Vocational School Istanbul Medipol University Beykoz Istanbul 34810 Turkey medipol.edu.tr Department of Mathematics Yildiz Technical University Esenler Istanbul 34220 Turkey yildiz.edu.tr

In this paper, we introduce the concept of S - -ideals in both commutative and noncommutative rings. For a commutative ring R and a multiplicatively closed subset S , we show that many properties of -ideals apply to S - -ideals and examine their characteristics in various ring constructions, such as homomorphic image rings, quotient rings, cartesian product rings, polynomial rings, power series rings, idealization rings, and amalgamation rings. In noncommutative rings, where S is an m -system, we define right S - -ideals. We demonstrate the equivalence of S - -ideals and right S - -ideals in commutative rings with identity and provide examples to illustrate the connections between right S -prime ideals and -ideals.

关键词： commutative ring 𝒥-ideal m-system multiplicatively closed subset noncommutative ring S-𝒥-ideals 16N20 16N40 16N60 16N80 16W99

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CONCURRENT LARGE-SIGNAL SIMULATION OF AN ACTIVE MICROSTRIP ANTENNA

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INTERNATIONAL JOURNAL OF NUMERICAL MODELLING-ELECTRONIC NETWORKS DEVICES AND FIELDS 1995年第1期8卷 3-12页

作者： MCDOWALL, DS FUSCO, VF High Frequency Electronics Laboratory. Department of Electrical and Electronic Engineering The Queen's University of Belfast Ashby Building Stranmillis Road Belfast BT9 5AH U.K. D. Stewart McDowall was born in Dublin Republic of Ireland in 1967. He received the M. Eng. degree in Electrical and Electronic Engineering from the Queen's University of Belfast in 1990. In the same year he was presented with a Distinction Award from the Departmnet of Education of Northern Ireland and he is currently pursuing his Ph.D. in the Microwave Research Group at Q.U.B. His principal research area is the electromagnetic field mapping of microwave systems using concurrent programming. He is an Associate Member of the Institute of Electrical Engineers. Vincent F. Fusco was educated at the Queens's University of Belfast where he obtained the degree of Ph.D. in 1982. He has worked as a research engineer on short-range radar and radio telemetry systems. Currently he is a reader in Microwave Communications in the School of Electrical engineering and Computer Science the Queen's University of Belfast. His current research interests include non-linear microwave circuit simulatino and concurrent programming techniques for electromagnetic field problems with particular emphasis on EMC applications. He has published numerous research papers in these areas. He is the author of the bookMicrowave Circuits Analysis and Computer Aided Design Prentice-Hall 1987. Dr Fusco is a Chartered Electrical Engineer and a Member of the Institute of Electrical Engineers.

This paper details the use of a circuit-based EM modelling technique combined with a harmonic balance simulator used to model the radiation from the microstrip bodies comprising an active antenna circuit. The modelling approach adopted for the planar bodies in the circuit will be shown to allow the use of concurrent algorithms in order to reduce overall computational time.

关键词： Microstrip antennas

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Prevention of Japanese encephalitis with different control strategies considering environmental effects: A mathematical study

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AIP Conference Proceedings 2023年第1期2718卷

作者： K. Barman K. Maity R. N. Giri A. De Department of Mathematics Prabhat Kumar College Contai Purba Medinipur - 721404 West Bengal India Department of Mathematics Mugberia Gangadhar Mahavidyalaya Bhupatinagar Purba Medinipur-721425 W.B. India Department of Applied Mathematics with Oceonology and Computer Programming Vidyasagar University Midnapore 721102 India Department of Applied Sciences Haldia Institute of Technology Purba Medinipur - 721657 West Bengal India

Japanese encephalitis (JE), a public health problem for the entire world, is caused by a virus called Japanese encephalitis virus (JEV) which is spread by mosquitoes. According to WHO’s report, nearly 68000 clinical cases of JE are reported globally each year and approximately 13600 to 20400 are deaths. Here, a mathematical model of JE is formulated considering different control measures such as vaccination, treatment, insecticide and efforts to reduce environmental discharges. An explicit expression of basic reproduction number is formulated and the stability of disease-free and endemic equilibrium of the system is analyzed. In this paper, we have formulated an optimal control problem and analyzed different strategies considering the minimum cost for applying such strategies. We have investigated the results of fixed control for endemic equilibrium both numerically and graphically. We have solved the optimal problem numerically when control parameters are time-dependent by applying Runge-Kutta 4th order forward and backward method and presented graphically. In our present work, we discussed the best cost-effective control strategy to prevent Japanese encephalitis when we consider environmental discharges have a positive impact on the breeding of mosquitoes and the growth of the pig population.

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THE AN/UYK‐502(V) MICROcomputer

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Naval Engineers Journal 1979年第2期91卷 173-178页

作者： WILLIAMS, PAUL F. ANDERSON, JOHN M. Mr. Paul F. Williams:received his BS degree in Electrical Engineering from the University of Minnesota in December 1965. He joined SPERRY UNIVAC Defense Systems Division in January 1966 where he is now the Manager of the Computer Product Planning Group in the Marketing Department. He has been active in the development of new computer system architectures and new computer development including the AN/UYK-20 and AN/UYK-23. In addition he has worked with a number of Navies in the development of shipboard and landbased systems and has participated in the development of NATO Shipboard Standard Interfaces. Mr. John M. Anderson:received his BS degree in Electrical Engineering from the University of Washington in June 1969. He joined SPERRY UNIVAC in July 1970 where he is now a Senior Design Engineer in the Product Development Group. He is currently active in the development of the AN/UYK-520 Microcomputer and additionally has been active in the fields of digital logic design programming and computer testing.

The AN/UYK‐502 Microcomputer is a full‐scale, general‐purpose 16‐bit militarized computer designed to emmulate the AN/UYK‐20 and AN/AYK‐14, and to be implemented in a shipboard system employing distributed system architecture. Ship System Data Busses require microcomputers to be located near or within ship subsystems, with system interconnection being made through a common data bus. To implement this type of system architecture, a low cost, modular microcomputer capable of handling the bus “handshake” through a standard interface is required. The AN/UYK‐502(V) uses software common to minicomputers which allows different computer configurations to be implemented with bus architecture. The resulting system can then be maintained with a single set of support software programs thus significantly lowering system life cycle costs. The computer is offered in three physical packages: the Card Kit, Chassis Assembly, and Cabinet Assembly. Flexible options of the AN/UYK‐502(V) allow the user to tailor the system to the application needs. These options include the Central Processing Expansion Unit;main memory up to 2S6K (where K = 1024);memory parity;choice of 1 to 64 input/output (I/O) channels;parallel and/or serial I/O;and power supply selection. © 1979 American Society of Naval Engineers

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Modern Information Technologies in Scientific Research and Educational Activities

arXiv

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arXiv 2024年

作者： Malakhov, Kyrylo Kaverinskiy, Vladislav Ivanova, Liliia Romanyuk, Oleksandr Romaniuk, Oksana Voinova, Svitlana Kotlyk, Sergii Sokolova, Oksana V. M. Glushkov Institute of Cybernetics The National Academy of Sciences of Ukraine Kyiv Ukraine Department of Wear-Resistant and Corrosion-Resistant Powder Construction Materials Frantsevic Institute for Problems in Material Science The National Academy of Sciences of Ukraine Kyiv Ukraine Separated Structural Subdivision «Odesa Technical Professional College of Odesa National University of Technology» Odessa Ukraine Vinnytsia National Technical university Vinnytsia Ukraine Vinnytsia National Technical university Vinnytsia Ukraine Odesa National University of Technology Odessa Ukraine The Institute of Computer Engineering Automation Robotics and Programming Odesa National University of Technology Odessa Ukraine Odesa National University of Technology Odessa Ukraine

This article presents a comprehensive methodology for enhancing the capabilities of conversational AI systems, focusing on ChatGPT, through the integration of ontology-driven structured prompts and meta-learning techniques. The proposed approach, exemplified by the RDWE OntoChatGPT system, demonstrates significant potential for improving productivity and expanding knowledge bases in specific subject domains and languages. By formalizing methods for creating and configuring structured prompts and context ontologies, the system enables ChatGPT to provide specific information using selected contexts, thereby enhancing its performance in handling data across diverse linguistic and domain contexts. Through empirical testing, the study evaluates the system’s effectiveness in providing accurate responses while also highlighting areas for further refinement. The methodology’s adaptability to other conversational AI systems based on large language models underscores its potential for broader application in natural language processing and dialogue systems. Future enhancements aim to refine structured prompts and incorporate additional input data to further improve system performance and accuracy. Overall, this research contributes to advancing the capabilities of conversational AI systems, paving the way for more sophisticated and effective human-computer interactions in various domains. © 2024, CC BY-SA.

关键词： Ontology

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The relationship between perceived stress and emotional eating in bus drivers: the effect of shift work

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Journal of Plant Foods 2024年第7期75卷

作者： Emre Bayraktaroglu Hilal Hizli-Guldemir Serkan Eti Merve Kayali-Sevim Neda Saleki a Department of Nutrition and Dietetics Istanbul Medipol University College of Health Sciences Istanbul Turkey b Department of Nutrition and Dietetics Faculty of Health Sciences Anadolu University Eskisehir Turkey c Department of Computer Programming Istanbul Medipol University IMU Vocational School Istanbul Turkey d General Directorate of IETT Enterprises Istanbul Turkey e Department of Nutrition and Dietetics Faculty of Health Sciences Istanbul Medipol University Istanbul Turkey

This study discusses the relationship between perceived stress and emotional eating based on shiftwork in city bus drivers. It was conducted with 1403 male city bus drivers working in Istanbul. Questions about the drivers’ physical activity and dietary habits, the Healthy Diet Index (HDI), Emotional Appetite Questionnaire and Perceived Stress Scale-10 data were collected and evaluated in two groups: shift and non-shift employees. It was found that the shift workers (SWs) have lower perceived stress, physical activity, HDI and positive emotional appetite averages. In addition, for SWs, a positive correlation was found between negative emotional appetite scores and physical activity and HDI scores. In conclusion, the drivers working in shifts were found to be slightly overweight and had lower physical activity levels, had lower HDI scores, and their nutritional status was more negatively impacted than their counterparts.

关键词： Driver perceived stress Healthy Diet Index shiftwork

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