• Title/Summary/Keyword: virtual transaction

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A Performance Enhancement of Java Card Virtual Machine with Multi-Transaction (다중 트랜잭션 기법을 이용한 자바 카드 가상 기계 성능 향상)

  • Noh, Tae-Heon;Lee, Dong-Wook;Jung, Min-Soo
    • Journal of Korea Multimedia Society
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    • v.12 no.1
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    • pp.41-49
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    • 2009
  • Smart Card is currently more popular in mobile communication, and smart card with java card platform becomes a standard choice. Java card has a problem that it gets lost working data when power is off. Transaction is the idea to solve a problem of data loss, but it accepts only one transaction process, and other transaction process need to hold until the current working transaction is finished. This might be a factor to drop the Java card's performance. In this paper, we define a rule of dual-lock which can run transaction at multiple transaction buffer as a method for a better java card performance, and we suggest this rule to improve a capability of transaction process. From this research, we are able to improve the data stability, reduce the java card transaction delay time, and get a higher processing speed of java card.

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A Study of Controller's Output Characteristics for Hatic Interface System (촉각시스템용 제어기의 출력특성연구)

  • Kim Y.S.;Kim A.H.;Bae C.;Kang W,C.;Kim Y.D.
    • Proceedings of the KIPE Conference
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    • 2003.07a
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    • pp.410-414
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    • 2003
  • In this paper, the virtual-reality system is tried to developed, which controls not only the sense of sight and hearing but also the sense of touch, In order to develope the sense of touch in this study, the stable tactual transaction-system, based on summing up the basic algorithm and theory, is embodied. The hardware of this system consists of the 6DOF haptic interface, a controller and a driver In the case of the software, the proxy algorithm is applied for the force-transaction and the mopping algorithm is used for graphic transaction. In addition to this, the imaginary-device driver is utilized for controlling the system and manager-class is also included in this system to manage the position-change and the like. Consequently, the proxy algorithm Is applied, which makes the system possible to be more stable and prompt with and imaginary object. Moreover, the impulse-algorithm is applied to work out a problem which the tactual transaction-period is different from the graphic transaction-period.

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Virtual Credit Card Number Payment System with Stored Hash Value for Efficient Authentication (효율적인 인증을 위한 해시 저장방식의 가상카드번호 결제 시스템)

  • Park, Chan-Ho;Kim, Gun-Woo;Park, Chang-Seop
    • Journal of the Korea Institute of Information Security & Cryptology
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    • v.25 no.1
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    • pp.5-15
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    • 2015
  • Electronic transactions have been increasing with the development of the high-speed Internet and wireless communication. However, in recent years financial corporations and mobile carriers were attacked by hackers. And large numbers of privacy information have been leaked. In particular, in the case of credit card information can be misused in the online transaction, and the damage of this given to cardholder. To prevent these problems, it has been proposed to use a virtual card number instead of the actual card number. But it has security vulnerability and requires additional security infrastructure. In this paper, we analyzed the proposed virtual card number schemes. and we propose a new virtual credit card number scheme. In the newly proposed scheme, cardholder generates a key pair (public key/private key) and pre-register public key to the issuer. then, cardholder can pay no additional security infrastructure while still efficiently satisfy the security requirements.

FE Analysis of Hybrid Stepping Motor (HSM)

  • Jang Ki-Bong;Lee Ju
    • KIEE International Transaction on Electrical Machinery and Energy Conversion Systems
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    • v.5B no.1
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    • pp.39-42
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    • 2005
  • Though full 3D analysis is the proper method to analyze the hybrid stepping motor (HSM), it has weak points in the areas of computation time and complexity. This paper introduces 2D FEA using a virtual magnetic barrier for the axial cross section to save computation time. For the purpose of 2D FEA, the virtual magnetic barrier and equivalent permanent magnet model of HSM are proposed. This result is compared with that of experimental and 3D analysis, considered as a reference result.

One-Time Virtual Card Number Generation & Transaction Protocol using Integrated Authentication Center (통합인증센터를 활용한 일회용 가상카드번호 생성 및 결제서비스 프로토콜)

  • Seo, Seung-Hyun
    • Journal of the Korea Institute of Information Security & Cryptology
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    • v.20 no.3
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    • pp.9-21
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    • 2010
  • Recently, famous online shopping websites were hit by hacking attack, and many users' personal information such as ID, password, account number, personal number, credit card number etc. were compromised. Hackers are continuing to attack online shopping websites, and the number of victims of these hacking is increasing. Especially, the exposure of credit card numbers is dangerous, because hackers maliciously use disclosed card numbers to gain money. In 2007 Financial Cryptography Conference, Ian Molly et al. firstly proposed dynamic card number generator, but it doesn't meet reuse resistant. In this paper, we analyzed security weaknesses of Ian Molly's scheme, and we proposed a new one-time virtual card number generator using a mobile device which meets security requirements of one-time virtual card numbers. Then, we propose one-time credit card number generation and transaction protocol using Integrated Authentication Center for user convenience and security enhancement.

Enhancing the Security of Credit Card Transaction based on Visual DSC

  • Wei, Kuo-Jui;Lee, Jung-San;Chen, Shin-Jen
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.9 no.3
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    • pp.1231-1245
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    • 2015
  • People have transferred their business model from traditional commerce to e-commerce in recent decades. Both shopping and payment can be completed through the Internet and bring convenience to consumers and business opportunities to industry. These trade techniques are mostly set up based on the Secure Sockets Layer (SSL). SSL provides the security for transaction information and is easy to set up, which makes it is widely accepted by individuals. Although attackers cannot obtain the real content even when the transferred information is intercepted, still there is risk for online trade. For example, it is impossible to prevent credit card information from being stolen by virtual merchant. Therefore, we propose a new mechanism to solve such security problem. We make use of the disposable dynamic security code (DSC) to replace traditional card security code. So even attackers get DSC for that round of transaction, they cannot use it for the next time. Besides, we apply visual secret sharing techniques to transfer the DSC, so that interceptors cannot retrieve the real DSC even for one round of trade. This way, we can improve security of credit card transaction and reliability of online business. The experiments results validate the applicability and efficiency of the proposed mechanism.

Type and Settlement System of Disputes in Electronic Commerce (전자상거래 분쟁의 유형과 해결제도)

  • 이강빈
    • Journal of Arbitration Studies
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    • v.11 no.1
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    • pp.217-245
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    • 2001
  • Like traditional commerce, disputes are bound to arise in the course of conducting an e-commerce transaction. At present of June 30, 2001, 259 cases of dispute on e-commerce have been applied for the mediation of Electronic Transaction Dispute Mediation Committee, types of them are 170 cases of delayed delivery of commodity, 21 cases of contract cancellation and refund, 16 cases of personal information protection, 16 cases of false and exaggerated advertisement, 14 cases of commodity defect. The settlement systems of e-commerce dispute are litigation and Alternative Dispute Resolution(ADR). ADR encompasses mediation, arbitration, and similar private tools for resolving disputes. ADR offers many perceived advantages. Speed of resolution and low cost are often cited as the primary benefits. Therfore e-commerce disputes may be settled more effectively by litigation. The settlement systems of e-commerce dispute by ADR are the mediation of Electronic Transaction Dispute Mediation Committee, the mediation of Consumer Dispute Mediation Commercial Arbitration Board, and the arbitration of Korean Commerical Arbitration Board. E-commerce sets up the probability that its merchants and customers will not exist in the same legal jurisdictions. The confusing application of laws and wide geographical dispersion of these parties will necessitate a faster and cheaper dispute resolution methodology. Therefore, online ADR may be effective for e-commerce dispute resolution. The examples of online ADR opetation are the cyber mediation of Electronic Transaction Dispute Resolution Committee, the cyber mediation of Korean Commercial Arbitration Board, the cyber mediation of Click N Settle, the online ADR of BBB online, and the cyber arbitration of virtual Magistrate.

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LMP Calculation with Consideration of Transaction Strategy and Quadratic Congestion Cost Function (거래전략 및 Quadratic 혼잡비용을 고려한 LMP산정에 대한 연구)

  • Kim, Jae-Wook;Jung, Sung-Hun;Min, Kyung-Il;Moon, Young-Hyun
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.60 no.2
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    • pp.257-265
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    • 2011
  • As the competitive market system has been introduced to the electrical power trade, the priority concern would be that the price of electrical power should be reasonable. It is because, when this rule is solid, we can avoid the distortion of competition and assure the greater efficiency in management. LMP(Locational Marginal Price) means marginal price at each bus. This components consist of energy, loss and congestion cost. At this point, the LMP result that is calculated by traditional model is changeable by the location of the slack and can not be used in bilateral Transaction. This paper proposed algorithm is proved its rationality and credibility by comparing the result of the simulation of virtual 6_bus system that is calculated by traditional method, and showed that the LMP components are changed according to the Transaction Strategy. Furthermore, It shows the effect of additional congestion cost on the transmission line that has bottle neck frequently by simulation.

Blog Intelligence (블로그 인텔리전스)

  • Kim, Jae-Kyeong;Kim, Hyea-Kyeong;O, Hyouk
    • Journal of Information Technology Services
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    • v.7 no.3
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    • pp.71-85
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    • 2008
  • The rapid growth of blog has caused information overload where bloggers in the virtual community space are no longer able to effectively choose the blogs they are exposed to. Recommender systems have been widely advocated as a way of coping with the problem of information overload in e-business environment. Collaborative Filtering (CF) is the most successful recommendation method to date and used in many of the recommender systems. In this research, we propose a CF-based recommender system for bloggers to find their similar bloggers or preferable virtual community without burdensome search effort. For such a purpose, we apply the "Interest Value" to CF recommender systems. The Interest Value is the quantity value about users' transaction data in virtual community, and can measure the opinion of users accurately. Based on the Interest Value, the neighborhood group is generated, and virtual community list is recommended using the Community Likeness Score (ClS). Our experimental results upon real data of Korean Blog site show that the methodology is capable of dealing with the information overload issue in virtual community space. And Interest Value is proved to have the potential to meet the challenge of recommendation methodologies in virtual community space.

Website Quality, E-satisfaction, and E-loyalty of Users Based on The Virtual Distribution Channel

  • PANDJAITAN, Dorothy R.H.;Mahrinasari, MS.;HADIANTO, Bram
    • Journal of Distribution Science
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    • v.19 no.7
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    • pp.113-121
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    • 2021
  • Purpose: Technology induces the virtual distribution channel to exist, especially for booking a room online. This situation, indeed, provides an alternative for the customers to book based on their budget through digital platforms. One platform offering competitive prices is virtual hotel operators, such as Airbnb, OYO, RedDoorz, and Airy Rooms. Preferably, after using their platform, the user should be satisfied and loyal. Hence, this investigation aims to prove some associations. The first is between e-satisfaction and e-loyalty. The second is between website quality and e-satisfaction. The final is between website quality and e-loyalty. Research design, data, and methodology: This study is quantitatively designed with the sample of 350 users of the virtual hotel operator applications in Bandar Lampung: Airbnb, OYO, RedDoorz, and Airy, as the samples. Therefore, by denoting this sample size, the structural equation model based on covariance is utilized to examine the three hypotheses proposed. Also, to get the responses, this study uses a survey through a questionnaire. Result: This investigation demonstrates the positive relationship between e-satisfaction and e-loyalty. Additionally, website quality positively associates with e-satisfaction and e-loyalty. Conclusion: The virtual hotel operators must have the superiority on their website-based application to update the information based on the room availability and price, ensure online transaction safety, and facilitate its utilization to maintain long-term satisfaction and loyalty virtually.