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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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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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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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INTELLIGENT MACHINERY CONTROL INTEGRATION

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NAVAL ENGINEERS JOURNAL 1995年第5期107卷 51-57页

作者： FAIRHEAD, DL HALL, CC Since graduating from Cleveland State University in 1965 with a Bachelor of Science degree in Mathematics he has worked for the Navy at Annapolis participating in several different automation efforts ranging from design aids to surface ship bridge control. Mr. Fairhead has completed graduate work in Computer Science at the University of Maryland has a certificate in Computer Programming holds a patent and is a member of the Association for Computing Machinery (ACM). Upon graduation from Morgan State in 1962 Mr. Hall was employed as a physicist at the Naval Surface Warfare Center Carderock Division Annapolis until 1994. During that time period he served as program technical manager for propulsion technology and as senior project scientist for several automation projects including the Automated Ships Bridge project. Mr. Hall also served as a member of the initial Technical Director's Technology Application Team and of the Autonomic Ship Innovation Center Team. Mr. Hall is a member of the American Institute of Physics and Sigma Pi Sigma (National Physics Honor Society).

A growing concern about the shrinking size of the U.S. Navy budget and the pool from which selections will be made to ''man'' U. S. Navy shipboard systems has led to investigations on achieving improvements in affordability and operational effectiveness. One such investigation has resulted in the development of the Standard Monitoring and Control System (SMCS), a modular, open architecture control system which includes the control system components for propulsion, electric plant, auxiliaries, and damage control. The first major technology upgrade to SMCS will entail the insertion of Artificial Intelligence (AI) technologies into HM&E monitoring and control applications. The Intelligent Machinery Control Integration Task (IMCI) was established to provide a structural approach for this major technology upgrade. As part of the first phase of IMCI, an identification of intelligent control requirements, an assessment of AI technologies, and a survey of intelligent control applications were performed. This paper lists those HM&E-related shipboard operational requirements from which intelligent machinery control requirements will be identified. Also, there is an initial assessment of AI-related reasoning and the following AI technologies, knowledge-based systems, fuzzy logic, neural nets, and genetic algorithms. The survey provided some insight into applying AI technologies to SMCS shipboard operational requirements.

关键词： Ships

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An Inventory Model with Finite Replenishment Rate, Trade Credit Policy and Price-Discount Offer

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Journal of Industrial Engineering 2013年第1期2013卷

作者： Biswajit Sarkar Shib Sankar Sana Kripasindhu Chaudhuri Department of Applied Mathematics with Oceanology and Computer Programming Vidyasagar University Midnapore 721-102 Indiavidyasagar.ac.in Department of Mathematics Bhangar Mahavidyalaya University of Calcutta Kolkata 743-502 Indiacaluniv.ac.in Department of Mathematics Jadavpur University Kolkata 700-032 Indiajadavpur.edu

When some suppliers offer trade credit periods and price discounts to retailers in order to increase the demand of their products, retailers have to face different types of discount offers and credits within which they have to take a decision which is the best offer for them to make more profit. The retailers try to buy perfect-quality items at a reasonable price, and also they try to invest returns obtained by selling those items in such a manner that their business is not hampered. In this point of view, we consider an economic order quantity (EOQ) model for various types of time-dependent demand when delay in payment and price discount are permitted by suppliers to retailers. The models of various demand patterns are discussed analytically. Some numerical examples and graphical representations are considered to illustrate the model.

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An Efficient Algorithm to Solve the Conditional Covering Problem on Trapezoid Graphs

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International Scholarly Research Notices 2011年第1期2011卷

作者： Akul Rana Anita Pal Madhumangal Pal Department of Mathematics Narajole Raj College Paschim Medinipur Narajole 721 211 India Department of Mathematics National Institute of Technology Durgapur 713209 Indianitdgp.ac.in Department of Applied Mathematics with Oceanology and Computer Programming Vidyasagar University Midnapore 721 102 Indiavidyasagar.ac.in

Let G = ( V , E ) be a simple connected undirected graph. Each vertex v ∈ V has a cost c ( v ) and provides a positive coverage radius R ( v ). A distance d uv is associated with each edge { u , v } ∈ E, and d ( u , v ) is the shortest distance between every pair of vertices u , v ∈ V . A vertex v can cover all vertices that lie within the distance R ( v ), except the vertex itself. The conditional covering problem is to minimize the sum of the costs required to cover all the vertices in G . This problem is NP-complete for general graphs, even it remains NP-complete for chordal graphs. In this paper, an O ( n 2 ) time algorithm to solve a special case of the problem in a trapezoid graph is proposed, where n is the number of vertices of the graph. In this special case, d uv = 1 for every edge { u , v } ∈ E , c ( v ) = c for every v ∈ V ( G ), and R ( v ) = R , an integer >1, for every v ∈ V ( G ). A new data structure on trapezoid graphs is used to solve the problem.

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A Horizontal Federated Learning Approach to IoT Malware Traffic Detection: An Empirical Evaluation with N-BaIoT Dataset

A Horizontal Federated Learning Approach to IoT Malware Traf...

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International Conference on Advanced Communication Technology (ICACT)

作者： Phuc Hao Do Tran Duc Le Vladimir Vishnevsky Aleksandr Berezkin Ruslan Kirichek The Bonch-Bruevich Saint-Petersburg State University of Telecommunications Saint-Petersburg Russia Danang Architecture University Da Nang Viet Nam Department of Communication Networks and Data Transmission at Bonch-Bruevich Saint-Petersburg State University of Telecommunications Russia University of Science and Technology - The University of Danang Da Nang Viet Nam Information Technology Faculty The University of Danang - University of Science and Technology Danang Vietnam V. A. Trapeznikov Institute of Control Sciences of Russian Academy of Sciences Moscow Russia Institute of Control Sciences of Russian Academy of Sciences Russia Department of Programming Engineering and Computer Science Bonch Bruevich Saint Petersburg State University of Telecommunications

The increasing prevalence of botnet attacks in IoT networks has led to the development of deep learning techniques for their detection. However, conventional centralized deep learning models pose challenges in simultaneously ensuring user data privacy and detecting botnet attacks. To address this issue, this study evaluates the efficacy of Federated Learning (FL) in detecting IoT malware traffic while preserving user privacy. The study employs N-BaIoT, a dataset of real-world IoT network traffic infected by malware, and compares the effectiveness of FL models using Convolutional Neural Network, Long Short-Term Memory, and Gated Recurrent Unit models with a centralized approach. The results indicate that FL can achieve high performance in detecting abnormal traffic in IoT networks, with the CNN model yielding the best results among the three models evaluated. The study recommends the use of FL for IoT malware traffic detection due to its ability to preserve data privacy.

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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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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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