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SSRN 2023年

作者： Hsieh, Hui-Ching Chiang, Mao-Lun Lin, Tzu-Ling Liao, Lu-Wen Chen, Ze-Yu Department of New Media Communication Hsing Wu University New Taipei City Taiwan Bachelor Degree Program of Artificial Intelligence National Taichung University of Science and Technology Taichung City Taiwan Department of Business Management National Taichung University of Science and Technology Taichung404336 Taiwan Department of Intelligent Production Engineering National Taichung University of Science and Technology Taiwan Department of Information and Communication Engineering Chaoyang University of Technology Taichung City Taiwan

Inspired by the backbone architecture of wired networks, in this study, we applied the concept of a virtual backbone to the routing scheme in a mobile ad hoc network (MANET) to develop an effective routing method. Using connected dominating set (CDS)-based methods to construct a virtual backbone network can effectively improve routing performance in a MANET. The CDS virtual backbone network we developed in the present study can respond quickly and identify routing paths through these CDS members as the network topology changes. Meanwhile, the nodes that are not CDS members can enter the power-saving mode to minimize unnecessary power consumption. Wireless nodes in a MANET can move freely within the network;therefore, CDS virtual backbones are easy to deconstruct. Researchers have developed centralized and decentralized CDS algorithms to reconstruct network topologies. When previously developed centralized CDS algorithms are applied, the system requires the information of all nodes in the network to reconstruct the virtual backbone. Therefore, the information exchange costs of such algorithms before refactoring are high. By contrast, decentralized CDS algorithms can use local information to reconstruct virtual backbones quickly. Yet, decentralized algorithms produce larger CDSs than centralized algorithms. To improve upon the performance of previously developed decentralized algorithms, we developed and herein present a new decentralized CDS algorithm called APP-CDS that can quickly construct a virtual backbone with the smallest possible CDS for use in MANET environments. © 2023, The Authors. All rights reserved.

关键词： Routing algorithms

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Coffee Consumption and Cancer Risk: a Systematic Review and Meta-analysis

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Nutritional Sciences Journal 2019年第4期43卷 111-120页

作者： Tsai, Chung-Huang Chang, Chia-Hsien Chang, King-Jen Huang, Ching-Jang Lin, Gau-De Department of Family Medicine Chung-Kang Branch Cheng Ching Hospital Taiwan Department of Surgery Chung-Kang Branch Cheng Ching Hospital Taiwan Tunghai University Sports Recreation and Health Management Continuing Studies - Bachelor's Degree Completion Program Taiwan Department of Surgery National Taiwan University Hospital Taipei Taiwan Department of Biochemical Science and Technology National Taiwan University Taipei Taiwan

Background: Coffee has attracted attention as a risk of cancer. We searched for meta-analyses in the literature of cancer in various organs to compile a comprehensive systematic review and then performed a meta-analysis. Materials and methods: The keywords were “coffee” AND (“cancer” or “tumor” or “neoplasm” or “malignancy” or “malignant” or “carcinoma”), and databases such as PubMed Medline, Cochrane, and Web of Science were searched. We used the keywords (“meta-analysis” or “pooled analysis” or “systematic review”) to search for meta-analysis literature of various organs. We searched for odds ratios (ORs), 95% confidence intervals (Cis), and heterogeneity (I²) of meta-analyses in the literature and used Comprehensive Meta-Analysis 3.0 software to perform a meta-analysis. A forest plot was drawn with MS-Excel and its Visual Basic for Applications according to the results. Results: In total, 20 related studies involving 19 organs were found. The results showed that coffee was beneficial, and statistically significant differences were found overall (OR: 0.91;95% CI: 0.85～0.97) after excluding childhood leukemia for cancers of the brain (OR: 0.47;95% CI: 0.22～0.98), oral cavity and pharynx (OR: 0.69;95% CI: 0.57～0.84), breast (OR: 0.96;95% CI: 0.93～1.00), liver (OR: 0.52;95% CI: 0.42～0.63), pancreas (OR: 0.75;95% CI: 0.63～0.86), bladder (3 cups/0 cup)(OR: 0.56;95% CI: 0.32～0.99), and endometrium (OR: 0.74;95% CI: 0.68～0.81), as well as melanomas (OR: 0.75;95% CI: 0.63～0.89), and non-melanomas (OR: 0.91;95% CI: 0.89～0.93). The most harmful aspects of coffee were statistically significant differences in lung cancer (OR: 1.09;95% CI: 1.00～1.19), bladder cancer (OR: 1.33;95% CI: 1.19～1.48), overall childhood leukemia (OR: 1.57;95% CI: 1.16～2.11), and acute lymphoblastic leukemia(ALL)(OR: 1.43;95% CI: 1.22～1.68) during pregnancy. Conclusions: In general, coffee consumption can reduce the risk of cancer overall and in some organs, except coffee consumption during

关键词： cancer meta-analysis pregnancy systematic review

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An exploratory study of breakthrough innovations in digital businesses: The case of the Perfect Corporation

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Technological Forecasting and Social Change 2024年 201卷

作者： Wu, Feng-Shang Tsai, Chia-Chang Wu, Chien-Hsin Lo, Ting-Hsuan Graduate Institute of Technology Innovation and Intellectual Property Management National Chengchi University No. 64 Sec. 2 Zhinan Rd. Wenshan Dist. Taipei City11605 Taiwan Bachelor Degree Program of Digital Marketing National Taipei University No. 151 University Rd. Sanxia Dist. New Taipei City237303 Taiwan Department of Management Sciences Tamkang University No. 151 Yingzhuan Rd. Tamsui Dist. New Taipei City251301 Taiwan

Developing successful breakthrough innovations is a challenge for industrial firms due to the high degree of uncertainty and complexity involved. This difficulty is heightened by the rapid development of information and communication technologies, which has disrupted many traditional industries and has forced companies to adopt more radical approaches to innovation. To investigate the role of technological capabilities in digital disruption, the present study employs an in-depth qualitative case study of Perfect Corporation. We analyze how the market environment, strategies, business models, processes, and competencies, and organizational structure influence the company's ability to develop successful breakthrough innovations. Our findings reveal that Perfect Corporation has established and sustained a competitive advantage by observing market trends, leveraging its parent company's breakthrough technologies, and strategically positioning itself in the fashion technology sector. Our results contribute to the fields of breakthrough innovation and digital disruption. © 2024 Elsevier Inc.

关键词： Competition

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Reduction Effect of Nonthermal Plasma-Activated Water Against Pesticide Residues and its Impact on the Quality of Chrysanthemum Morifolium's Herbal Flower

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SSRN 2022年

作者： Arcega, Rachelle Anne D. Hou, Chih-Yao Hsu, Shu-Chen Lin, Chia-Min Chang, Wei-Hsiang Chen, Hsiu-Ling Department of Food Safety/Hygiene and Risk Management College of Medicine National Cheng Kung University Tainan704 Taiwan Department of Seafood Science National Kaohsiung University of Science and Technology Kaohsiung811 Taiwan Bachelor Degree Program in Environment and Food Safety Laboratory Sciences Chang Jung Christian University Tainan711 Taiwan Research Center of Environmental Trace Toxic Substances College of Medicine National Cheng Kung University Tainan704 Taiwan

This study investigated the efficiency of plasma-activated water (PAW) on the reduction of pesticides, namely, metribuzin and metobromuron, and the effect of PAW treatment on the quality of fresh chrysanthemums. The reduction efficiencies reached 74.3% for metribuzin and 38.2% for metobromuron after 240 s of PAW treatment. Compared with reverse osmosis water (ROW), PAW achieved significantly higher pesticide reductions because of its higher acidity, enhanced oxidizing ability, and increased formation of reactive species. Moreover, when compared with metrobromuron, metribuzin was reduced more efficiently irrespective of the ROW or PAW treatments because of its higher water solubility, lower log octanol-water partition coefficient, and more oxidizable chemical structure. Additionally, the PAW treatment did not cause adverse changes to the chrysanthemums’ color, total flavonoid content, radical scavenging, or metal chelating activities, but it did cause a slight decrease in the chrysanthemums’ aroma compounds and total reducing power. This study successfully demonstrated the effectiveness of PAW for reducing pesticides in herbal flowers like chrysanthemums and reveals PAW’s applicability to treat other foods with complex physical structures. © 2022, The Authors. All rights reserved.

关键词： Efficiency

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Extrapolation and option-implied kurtosis in volatility forecasting

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Pacific Basin Finance Journal 2024年 84卷

作者： Pan, Ging-Ginq Shiu, Yung-Ming Wu, Tu-Cheng International Bachelor Degree Program in Finance National Pingtung University Science and Technology 1 Shuefu Road Pingtung Neipu Taiwan Department of Risk Management and Insurance Risk and Insurance Research Center College of Commerce National Chengchi University 64 Sec. 2 Zhi-Nan Road Wen-Shan District Taipei Taiwan Department of Data Science and Analytics I-Shou University 1 Sec. 1 Syuecheng Road Dashu District Kaohsiung Taiwan

Prior studies have employed extrapolation to reduce truncation errors when computing risk-neutral moments. However, extrapolation may have a disadvantage in that it obscures the predictive power of risk-neutral skewness and kurtosis. Our out-of-sample results show that extrapolation does not enhance the predictive power of the volatility forecasting models when risk-neutral volatility, skewness, and kurtosis are included. Under this model specification, extrapolation generates less accurate forecasts and obscures the performance of risk-neutral kurtosis in volatility forecasting. © 2024 Elsevier B.V.

关键词： Extrapolation Risk-neutral kurtosis Risk-neutral skewness Volatility forecasting

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THE AIRCRAFT CARRIER

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Naval Engineers Journal 1963年第1期75卷 137-148页

作者： NACHTSHEIM, JOHN J. MIEHE, F.W. WILSON, COMMANDER T. B. Mr. John J. Nachtsheim is Chief Naval Architect of the Hull Design Branch of the Bureau of Ships. Prior to this position he held the position of Deputy Chief Design Engineer at the Puget Sound Naval Shipyard. He received his Bachelor of Science degree in Naval Architecture and Marine Engineering from Webb Institute of Naval Architecture and a Bachelor of Law degree from the George Washington University Law School. He was civilian project coordinator for the Hull Design Branch for the design of USS Enterprise CVA(N)65 and has been engaged in hull design for the Navy since 1948. Commander Frederick W. Miehe Jr. U. S. Navy is a student in the Navy Graduate Financial Management Program at The George Washington University. Prior to entering this program he was project officer for major combatant ships in the Machinery Design Branch Bureau of Ships. Earlier duty assignments include shipyards staff and shipboard engineering as well as a brief interlude flying blimps. He received the Bachelor of Science degree at the United States Naval Academy in 1943 and the Degree of Naval Engineer at Massachusetts Institute of Technology in 1949. Lieut. Commander Thomas B. Wilson Jr. U. S. Navy is project officer for aircraft carriers in the Hull Design Branch Bureau of Ships. He received his Bachelor of Science degree at the United States Naval Academy in 1948 and his Master of Science degree at Webb Institute of Naval Architecture in 1953. He has been concerned with the construction conversion repairing docking and operation of aircraft carriers since 1951.

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ANALYSIS OF CHANGES IN THE AEGIS CRUISER SHIPBUILDING program

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NAVAL ENGINEERS JOURNAL 1987年第3期99卷 173-180页

作者： BOWLER, RTE RIDDICK, RP Cdr. R. T. E. Bowler III:is the production officer for the Aegis Cruiser Shipbuilding Division (PMS 400C) in the Naval Sea Systems Command. He has a bachelor's degree from the U.S. Naval Academy and master's degrees in operations research from the U.S. Naval Postgraduate School and in industrial personnel administration from George Washington University. Previous related positions include nuclear cruise project officer supervisor of shipbuilding Newport News VA and fleet maintenance and modernization analyst CNO's Office of Systems Analysis (OP. 96). R. P. Riddick III:is a principal staff member of Advanced Technology and deputy program director for the Configuration Management Directorate of the Systems Analysis Operations Center. He contributes technical expertise in configuration management and data management to the Aegis shipbuilding program. Mr. Riddick applies more than 15 years of comprehensive technical experience in ship design and construction coupled with an understanding of the SupShip/shipyard environment to efforts in support of the Aegis cruiser director.

The Aegis cruiser program's objective has been to deliver ships to the fleet that are not only “war ready” but also reflect state-of-the-art combat systems technology. Therefore, change has been mandatory. The types of changes have covered the spectrum from major combat system and mission capability improvements to minor INSURV items. Since the sources of changes have been so varied and the quantities so substantial, attention must be placed on change management. A “source-based” change categorization scheme has been developed and implemented to enable the Aegis cruiser program manager to maintain an overview of change status on the ships. Developed as an outgrowth of the existing automated configuration management database, the change categorization scheme provides data to maintain an awareness of changes from many standpoints, including cost on a per ship basis as well as the categories which have been the largest cost drivers. More importantly it enables the SHAPM to determine the originating source, thus providing the knowledge needed to manage the change. Change can significantly improve products, but it must be prudently controlled, budgeted and scheduled.

关键词： WARSHIPS

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FFG-61 PROTOTYPE DIGITAL TECHNICAL LIBRARY

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NAVAL ENGINEERS JOURNAL 1992年第2期104卷 58-68页

作者： VINROOT, CA ORNER, JG USN Capt. Charles A. Vinroot USN (Ret.)retired from the U.S. Navy in September 1991 following over 27 years of active duty as an engineering duty officer. He holds a BSEE from North Carolina State University and a MSEE and professional degree from the U.S. Naval Postgraduate School. During his naval career he served on USSIndependence (CVA-62) and USSLuce (DLC-7/DDC-38). He also served at Supship Quincy Mass. and Hunters Point Naval Shipyard. He was stationed in Washington D.C. with assignments at CNO (OP 98) ASN (S&L) and the Naval Sea Systems Command. Captain Vinroot was technical director of the Battleship Reactivation Program (PMS 378) technical director of the Destroyer Acquisition Program (PMS 389) and deputy program manager of the Amphibious Warfare and Strategic Sealift Program (PMS 377). Most recently he served as program manager for Gas Turbine Surface Combatants (PMS 314) and Surface Combatants (PMS 330). Captain Vinroot is now employed by PRC Inc. and serves as technical director for the Advanced Technology Division in Crystal City Va. Jeffery G. Ornergraduated from Wittenberg University in Springfield Ohio in 1979 with a bachelor of arts degree in political science and earned a master's of science degree in business from The American University in Washington D.C. in 1982. He has ten years of professional experience with the Naval Sea Systems Command in positions with responsibilities for logistic support planning policy and delivery computer-aided acquisition and logistic support and Fleet Modernization Program (FMP) and ship construction issues. He was a key player in establishing the current FMP integrated logistic support (ILS) process and in implementing of the Ships' Configuration and Logistic Support Information System (SCLSIS). His current position as Fleet Logistic Support Branch head for the Surface Combatant Program includes responsibility for logistic support and management of ship configuration and logistic data for all surface combatant ships (except for Aegis ships). In

USS Ingraham (FFG-61) is the prototype ship for NavSea's Advanced Technical Information System (ATIS). ATIS is a digital technical library, which holds on optical disks the ship's 2,000 technical manuals and 73,000 drawing sheets. It contains a detailed ship's configuration index (derived from SCLSIS) to lead the user to the proper drawing or manual, and it replaces the ship's aperture cards and the second (library) copy of the technical manuals. ATIS, and the data standards established and tested through ATIS development, will be the technical library portion of micro-SNAP and SNAP III. It also forms an important part of NavSea's plans to utilize EDMICS data. This paper describes the goals and technical concepts behind the development of ATIS. Problems encountered, solutions developed, and lessons learned are detailed. Special attention was paid to the application of the Computer Aided Acquisition and Logistic Support (CALS) standards, problems caused by conflicts and ambiguities in those standards, the standards. Original program goals are compared with actual operational experiences. Plans for future expansion are outlined, including applications of this technology in the availability planning and execution process. A comparison is developed among the various methods of optical imaging and their costs and benefits.

关键词： Information Retrieval Systems

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RUDDER ROLL STABILIZATION FOR COAST GUARD CUTTERS AND FRIGATES

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NAVAL ENGINEERS JOURNAL 1983年第3期95卷 267-282页

作者： BAITIS, E WOOLAVER, DA BECK, TA Dr. Erich Baitis: a native of Germany came to the David W. Taylor Naval Ship Research and Development Center in 1957 as a co-operative student/trainee and received his Bachelor of Science Degree in Physics from Virginia Polytechnic Institute. As a 32-year-old naval architect in 1971 he received both the VietnamHonorServiceMedaland the Navy'sMeritoriousCivilianServiceAwardfor his eight months as liaison with the Vietnamese NAVVS ferro-cement ship program. As head of the Seakeeping and Stabilization Group of the Surface Ship Dynamics Branch his work has led to the development of a new standard Ship Motion Computer Program and the application of ship motions to ship habitability operability and survivability problems. A major area of this work has been the ship/aircraft interface which is particularly sensitive to ship motions wind and other environmental factors. Mr. Dennis A. Woolaver:has been employed as a Naval Architect at the David W. Taylor Naval Ship Research and Development Center since 1965 where his work has resulted in numerous patents. He received his Bachelor of Science Degree in Electrical Engineering from George Washington University where he also completed graduate work in Communication Theory. Additional fields of study include Computer Science and Personnel Management. Current efforts are directed toward surface ship motion mitigation data acquisition and statistical analysis. He is a member of the Society of Naval Architects and Marine Engineers. Lt. Tom A. Beck USCG: joined the UnitedStatesCoastGuardin 1966 where he trained as an Electronics Technician. He received a Bachelor of Science Degree in Electrical Engineering from Columbia University in 1978. From 1978 to 1979 he was an Electronics Project Officer at the CoastGuardElectronics Laboratory in Alexandria Virginia. Since 1980 he has been a Research and Development Project Officer in the Sensor Technology Branch of the CoastGuardsOffice of Research and Development. Lt. Beck is a member of the Institute of Electronic and Elect

The potential use of rudders as anti-roll devices has long been recognized. However, the possible interference of this secondary function of the rudder with its primary role as the steering mechanism has prevented, for many years, the development of practical rudder roll stabilizers. The practical feasibility of rudder roll stabilization has, however, in recent years been demonstrated by two systems designed and developed for operational evaluation aboard two different U.S. C oast G uard Cutters, i.e., Jarvis and Mellon of the 3,000-ton, 378-foot HAMILTON Class. The authors describe the major components of the rudder roll stabilization (RRS) system, along with the design goals and methodology as applied to these first two prototypes. In addition, a brief history of the hardware development is provided in order to show some of the lessons learned. The near flawless performance of the prototypes over the past four years of operational use in the North Pacific is documented. Results from various sea trials and reports of the ship operators are cited and discussed. The paper concludes with a discussion of the costs and benefits of roll stabilization achieved using both a modern anti-roll fin system, as well as two different performance level RRS systems. The benefits of roll stabilization are demonstrated by the relative expansion in the operational envelopes of the USS OLIVER HAZARD PERRY (FFG-7) Class. The varying levels of roll stabilization suggest that the merits of fins and RRS systems are strongly dependent on mission requirements and the environment. The demonstrated performance of the reliable RRS system offers the naval ship acquisition manager a good economical stabilization system.

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A SYSTEMS APPROACH TO HULL STRUCTURE DESIGN

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NAVAL ENGINEERS JOURNAL 1970年第5期82卷 59-&页

作者： RAWAT, P who began his education in his native India received a Bachelor of Technology degree with honors from the Indian Institute of Technology in 1957. His subsequent education includes S. M.‘s in Industrial Management and Naval Architecture & Marine Engineering from M. I. T. in 1961 and a professional degree in Naval Architecture from the same institution in 1965. Rawat's career began as a Naval Architect in preliminary design with the Hamburg firm of Howladtswerke in 1958. A year later he performed as a research assistant in M. I. T.'s School of Industrial Management for a Ford Foundation Project for a top management training program for India. After this two-year period he acted as the head of the Department Head of Engineering at the Ghana Nautical College in West Africa until 1963. He returned to M. I. T. afterwards to work as a research assistant in Naval Architecture on structural optimization programs. From 1965 to 1966 he filled the capacity of Naval Architecture with M. Rosenblatt & Son in the area of structural design on such projects as MOHOLE AGOR 14 and Catamaran Hull. Since 1966 Rawat has been working in various capacities with Litton Industries: Senior Naval Architect on the FDL Project Section Manager of Hull Structures for the LHA and DD Projects and his present position as Section Manager for Computer Aided Ship Design.

Many useful conclusions can be drawn if hull structural design is considered as a system. Proper definition of system objectives enables setting up of meaningful long range and intermediate goals. Current state-of-art in systems engineering is such that the system objectives can be denned in mathematical form. This provides meaningful scales for progress measurement. The engineering function is to meet the goals set by systems engineering. The state-of-art in engineering has a considerable impact on the definition of system objectives. In recent times we have made considerable progress in developing analytical techniques. Many interesting conclusions result from our experience in using the analytical tools in an iterative manner for design. By using relatively simple algorithms for iteration the analytical processes can be sequenced in such a manner that optimum solution is guaranteed even under a large and complex set of design constraints. Use of computers makes it possible to generate the scantlings using iterative approach with such speed that many important structural configuration decisions can be made by means of thorough parametric analyses. The system objectives therefore are very different in scope today and they should be further modified as technology advances. There are several problems that can be recognized and solved in the systems context. Smooth man-machine operation is an example of this.

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