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Efficient password authentication schemes based on a geometric approach for a multi-server environment

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Journal of Zhejiang university-Science C(Computers and Electronics) 2010年第12期11卷 989-997页

作者： Horng-Twu LIAW Chih-Ta YEN Meng-Yu CHIU Li-Lin HSIAO department of information management Shih Hsin University Taiwan 116 Taipei department of information management National Taiwan University of Science and Technology Taiwan 106 Taipei

Password authentication schemes based on a geometric approach are proposed. Based on geometrics such as a plane or space, the proposed schemes can be used to fulfill the various requirements for security and achieve more efficient results. They allow a user to register with many servers once without remembering different passwords for each, and also allow a user to change the password freely and update it offline. In addition, the proposed schemes do not need to maintain a verification table and are also computationally efficient. Moreover, we propose a specific access right (AR) to verify the legitimate user who has different authorization levels on a server in a multi-server environment.

关键词： Authentication Access right Security Geometry

A STUDY ON FACTORS FOR RETAILERS IMPLEMENTING CPFR-A FUZZY AHP ANALYSIS

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Journal of Systems Science and Systems Engineering 2010年第2期19卷 192-209页

作者： Hsin-Pin FU Kuo-Kuang CHU Sheng-Wei LIN Chi-Ren CHEN department of Marketing and Distribution management National Kaohsiung First University of Science and Technology Kaohsiung (811) Taiwan China department of Tourism management Shih Chien University Kaohsiung campus (845) Taiwan China department of Marketing and Logistics management Far East University Tainan County (744) Taiwan China

Since collaborative, planning, forecasting, and replenishment （CPFR） was first proposed in 1998, numerous studies have focused on exploring its implementation in retailing contexts. While a considerable body of research has emphasized reduced costs, increased sales and improved forecasting ability, there has been a lack of research on the importance of each of the various factors which affect such implementations. In order to find out the critical success factors affecting CPFR implementation, this paper first collected related influence factors regarding adopting CPFR or business to business （B2B） information systems, and further constructed a factor table with a three-layer hierarchical structure. A pair wise analytic hierarchy process （AHP） questionnaire was designed and distributed to experts who were familiar with implementing CPFR in the retailing industry. After questionnaires were returned, we found out the weights of each impact factor by using a fuzzy analytic hierarchy process （fuzzy AHP） approach. The importance of each critical impact factor was investigated, and the paths of the critical success factors were also analyzed. The results of this study can provide more precise information with regard to allocating optimal resources for retailers implementing CPFR.

关键词： Collaborative planning forecasting and replenishment (CPFR) critical influence factors fuzzy analytic hierarchy process (fuzzy AHP)

Petrogenesis of Cenozoic Basaltic Rocks from Jiangsu Province,China:Evidence from Geochemical Constraints

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Acta Geologica Sinica(English Edition) 2013年第1期87卷 102-117页

作者： Yung-Tan LEE Ju-Chin CHEN Jyh-Yi shih Kung-Suan HO Huai-Jen YANG Meng-Lung LIN Yen-Tsui HU Ching-Hsing CHIU Tourism School of Aletheia university Institute of Oceanography National Taiwan University National Museum of Natural Science department of Earth Sciences National Cheng Kung University Sinotech Engineering Consultants Inc. department of Tourism management Shih Chien University

Cenozoic （Miocene to Pleistocene） basaltic rocks in Jiangsu province of eastern China include olivine tholeiite and alkali basalt. We present major, trace element and Sr-Nd isotopic data as well as Ar-Ar dating of these basalts to discuss the petrogenesis of the basalts and identify the geological processes beneath the study area. On the basis of chemical compisitions and Ar-Ar dating of Cenonoic basaltic rocks from Jiangsu province, we suggest that these basalts may belong to the same magmatic system. The alkali basalts found in Jiangsu province have higher ~FeO, MgO, CaO, Na20, TiO2 and P205 and incompatible elements, but lower A1203 and compatible elements contents than olivine tholeiite which may be caused by fractional crystallization of olivine, pyroxene and minor plagioclase. In Jiangsu basaltic rocks the incompatible elements increase with decreasing MgO/~FeO ratios. The primitive mantle-normalized incompatible elements and chondrite-normalized REE patterns of basaltic rocks found in Jiangsu province are similar to those of OIB. Partial loss of the mantle lithosphere accompanied by rising of asthenospheric mantle may accelerate the generation of the basaltic magma. The 143Nd/144Nd vs. S7Sr/S6Sr plot indicates a mixing of a depleted asthenospheric mantle source and an EM1 component in the study area. According to Shaw＇s equation, the basalts from Jiangsu province may be formed by 1%-5% partial melting of a depleted asthenospheric mantle source. On the basis of Ar-Ar ages of this study and the fractional crystallization model proposed by Brooks and Nielsen （1982）, we suggest that basalts from Jiangsu province may belong to a magmatic system with JF-2 as the primitive magma which has undergone fractional crystallization and evolved progressively to produce other types of basalts.

关键词： Cenozoic basalts geochemistry Jiangsu Province mantle process Ar-Ar dating

Toward Cloud-Based Parking Facility management System: A Preliminary Study

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Journal of Electronic Science and Technology 2013年第2期11卷 181-186页

作者： Chung-Yang Chen Wen-Lung Tsai Tzu-Yin Chen department of information management National Central University department of information management Shih Hsin University

An e-tag used on the freeway is a kind of passive sensors composed of sensors and radio- frequency identification （RFID） tags. The principle of the electronic toll collection system is that the sensor emits radio waves touching the e-tag within a certain range, the e-tag will respond to the radio waves by induction, and the sensor will read and write information of the vehicles. Although the RFID technology is popularly used in campus management systems, there is no e-tag technology application used in a campus parking system. In this paper, we use the e-tag technology on a campus parking management system based on the cloud-based construction. By this, it helps to achieve automated and standardized management of the campus parking system, enhance management efficiency, reduce the residence time of the vehicles at the entrances and exits, and improve the efficiency of vehicles parked at the same time.

关键词： Cloud-based construction e-tag parking facility management system radio-frequencyidentification.

Improving Supply Chain Performance Through Supplier Selection and Order Allocation Problem

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Computers, Materials & Continua 2022年第1期70卷 1667-1681页

作者： Chia-Nan Wang Ming-Cheng Tsou Chih-Hung Wang Viet Tinh Nguyen Pham Ngo Thi Phuong department of Industrial Engineering and management National Kaohsiung University of Science and TechnologyKaohsiung80778Taiwan department of Shipping Technology National Kaohsiung University of Science and TechnologyKaohsiung80778Taiwan department of International Business Shih Chien UniversityTaipei80778Taiwan Faculty of Commerce Van Lang UniversityHo Chi Minh City70000Vietnam Faculty of Industrial Engineering and management International UniversityHo Chi Minh City70000Vietnam

Suppliers play the vital role of ensuring the continuous supply of goods to themarket for *** businesses do not maintain a strong bond with their suppliers,they may not be able to secure a steady supply of goods and products for their *** a result of failure to deliver products,the production and business activities of the business can be delayed which leads to the loss of ***,each trading enterprise will have a variety of commodity supply chains withmultiple *** play an important role and contribute to the value of the entire supply *** any supplier encounters a problem,the whole supply chain of businesses will be affected and could lead to not guaranteeing the stable supply to the ***,suppliers can be seen as a threat to businesses where they have the ability to increase input prices or decrease the quality of the required products and services they *** quantity of the business,and the supply lead time directly affect the operations and reduce the profitability of the *** paper mainly focuses on the supplier selection problemunder a variety of price level and product families when using a two-phase fuzzy multi-objective linear *** objectives of the proposed model are to minimize the total purchasing and ordering cost in order to reduce the quantity of defective materials and the late-delivery components from ***,the piecewise linear membership function is applied in themodel to determine an optimal solution which is based on the requirement of decision makers under their fuzzy *** results of this study can be applied in various business environment and provide a reliable decision tool for choosing potential suppliers relating to these *** on the results,the company canmake a good decision on supplier selection;therefore,the company can improve the quality and quantity of their final *** is because,the best supplier can su

关键词： Supplier selection multi-objective linear programming multiprice level multi-product fuzzy sets

Evaluations of Novel Waveform Coding Signals Based on Finite Projective Plane

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Journal of Electronic Science and Technology 2016年第1期14卷 54-59页

作者： chien-Hsing Liao Tai-Kuo Woo Chi-Chung Chen Ing-Jiunn Su the Program of information Technology Fooyin University the department of information management National Defense University the department of Electrical and Electronic Engineering National Defense University

The most popular and representative classic waveform codes are referred to as orthogonal,bi-orthogonal,simplex,and etc,but the choice of waveform codes is essentially identical in error performance and cross correlation *** bi-orthogonal coding requires half the bandwidth of the others,such coding scheme is attractive only when large bandwidth is *** this paper,a novel finite projective plane（FPP） based waveform coding scheme is proposed,which is with similar error performance and cross ***,the bandwidth requirement will grow in a quadratic way,but not in an exponential way with the values of message bit numbers（k）.The proposed scheme takes obvious advantages over the bi-orthogonal scheme when k ≥ 6.

关键词： Finite projective plane orthogonal coding simplex coding waveform coding

A three-level authenticated conference key establishment protocol for UMTS networks

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Journal of Zhejiang university-Science C(Computers and Electronics) 2011年第5期12卷 371-378页

作者： Chung-Fu LU Tzong-Chen WU chien-Lung HSU department of information management National Taiwan University of Science and Technology department of Computer and Communication Engineering Taipei College of Maritime Technology department of information management Chang Gung University

A conference key establishment protocol allows a group of conferees to agree on a secret key shared among them for secure group *** paper proposes a three-level conference key establishment protocol based on the Universal Mobile Telecommunications System (UMTS) framework to establish a group-level key,home location register (HLR) level keys,and visitor location register (VLR) level keys simultaneously for a group of *** group-level key is used to secure the communications for all conferees,the HLR-level key is for those within the same HLR domain,and the VLR-level key is for those within the same VLR *** group-level key can be used for securing inter-domain group-oriented applications such as commercial remote conferencing *** HLRand VLR-level keys can be used for securing intra-domain subgroup applications (e.g.,location-based or context-aware services) and dynamic key *** our proposed protocol exploits existing UMTS security functions and the exclusive-or operation,it is compatible with UMTS *** means that it is fast and easy to implement on the existing UMTS ***,the proposed protocol has low computational complexities and can provide cost effectiveness,load-amortization,scalability,user authentication,key establishment,key confirmation,key updating,and lawful interception.

关键词： Universal Mobile Telecommunications System (UMTS) Three-level Conference key establishment Secure group communication Authentication

The transaction behavior of cryptocurrency and electricity consumption

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Financial Innovation 2023年第1期9卷 1197-1214页

作者： Mingbo Zheng Gen‑Fu Feng Xinxin Zhao Chun‑Ping Chang School of Economics and management Chang’an UniversityXi’an 710064ShaanxiPeople’s Republic of China School of Economics and Finance Xi’an Jiaotong UniversityXi’an 710061ShaanxiPeople’s Republic of China department of Marketing management Shih Chien UniversityKaohsiung 84550Taiwan

Rapidly increasing cryptocurrency prices have encouraged cryptocurrency miners to participate in cryptocurrency production,increasing network hashrates and electricity *** in network hashrates has further crowded out small cryptocurrency investors owing to the heightened costs of mining hardware and *** changes prompt cryptocurrency miners to become new investors,leading to cryptocurrency price *** potential bidirectional relationship between cryptocurrency price and electricity consumption remains ***,this research thus utilizes July 312015–July 122019 data from 13 cryptocurrencies to investigate the short-and long-run causal effects between cryptocurrency transaction and electricity ***,we consider structural breaks induced by external shocks through stationary analysis and comovement *** the examined time period,we found that the series of cryptocurrency transaction and electricity consumption gradually returns to mean convergence after undergoing daily shocks,with prices trending together with *** fluctuations exert both a temporary effect and permanent influence on electricity ***,owing to the computational power deployed to wherever high profit is found,transactions are vital determinants of electricity consumption.

关键词： Transaction behavior Electricity consumption Cryptocurrency Comovement

Fuzzy finish time modeling for project scheduling

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Journal of Zhejiang university-Science A(Applied Physics & Engineering) 2010年第12期11卷 946-952页

作者： Yu-chuan LIU shih-ming YANG Yu-te LIN department of information management Tainan University of Technology Taiwan Tainan department of Aeronautics and Astronautics National Cheng Kung University Taiwan Tainan

This research aims at developing a new fuzzy activity finish time estimation model for project scheduling *** the application of the fuzzy quality function deployment (FQFD) and fuzzy analytic hierarchy process (FAHP) methods,the degree of fuzziness for every project activity is calculated in accordance with considerations of project *** uncertainties are measured by the risk level of such project-related characteristics as time limit,activity start time,budget,manpower,technological difficulty,and facility *** this paper,rather than applying the de-fuzzification technique to obtain the crisp activity duration for project scheduling,the fuzzy finish time estimation method for every activity is proposed based on the degree of *** corresponding fuzzy activity duration time plot is also developed in a new fuzzy Gantt *** proposed model can provide a reasonable fuzzy finish time estimation for every activity,while most scheduling methods only provide the finish time of the entire *** to existing models,this time estimation model and its corresponding Gantt chart are predicted to have higher reliability and practical application in project management and scheduling.

关键词： Fuzzy quality function deployment (FQFD) Fuzzy analytic hierarchy process (FAHP) Fuzzy Gantt chart Project management Project scheduling