• 한국산학기술학회논문지
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• 제5권3호
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• pp.247-253
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• 2004

본 논문에서는 웹 기반의 실시간 예약 서비스 시스템에서 신뢰성을 보장하기 위한 트랜잭션 모델에 대하여 주로 다룬다. 현재 기능별로 나누어져서 처리되고 있던 각각의 트랜잭션을 하나의 트랜잭션으로 묶어서 처리할 수 있는 웹 기반의 글로벌 트랜잭션 모델을 제시한다. 또한 트랜잭션 처리에서 발생되는 예외사항을 다루기 위하여 Fail-Check 프로세스를 제안한다. 그리고 시뮬레이션의 결과 제시한 모델의 타당성 및 가능성이 트랜잭션 처리 과정을 통하여 확인되었다.

• 정보교육학회논문지
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• 제2권2호
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• pp.174-182
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• 1998

최근 들어 인터넷의 발달 등에 힘입어 가상대학에 관한 관심이 증가하고 있으나, 기존의 가상대학 구축을 위해 적용되는 기술은 가상대학의 구현에 있어서 미비한 점이 많다. 특히, 현재의 트랜젝션 모형들은 가상대학을 지원하기 위해 많은 점이 보완되어야 한다. 본 연구에서는, 가상대학을 지원하기 위한 트랜젝션 모형을 제안한다. 본 연구에서는 첫째, 가상대학의 일반적인 환경에 대해서 논의하고 둘째 가상대학 지원을 위한 트랜젝션의 요구사항 들을 제시한다. 이 요구사항 들은 온라인 처리, 트랜젝션 길이의 유연성, 비예측성, 상호 작용성 또한 병렬성 등을 포함한다. 이 요구사항을 만족하는 트랜젝션 모형을 제안하고 또한 트랜젝션 처리 기법을 제안한다. 마지막으로, 앞으로의 연구과제 들을 제안한다.

• 한국정보처리학회논문지
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• 제6권11호
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• pp.2845-2862
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• 1999

As the technical advances in portable computers and wireless communication technologies, mobile computing environment has been rapidly expanded. The mobile users on mobile host can access information via wireless communication from the distributed heterogeneous multidatabase system in which pre-existing independent local information systems are integrated into one logical system to support mobile applications. Hence, mobile transaction model should include not only the features for heterogeneous multidatabase systems but also the ones for mobile computing environment. In this paper, we proposed a mobile flex transaction model which extends the flexible transaction model that previously proposed for heterogeneous multidatabase systems is extended to support the requirements of mobile heterogeneous multidatabase systems. We also presented the execution control mechanism of the mobile flex transaction model. The proposed mobile flex transaction model allows the definition of location-dependent subtransactions, the effective support of hand-over, and the flexibility of transaction executions. Hence, the proposed mobile flex transaction model can be suit to mobile heterogeneous multidatabase systems that have low power capability, low bandwidth, and high communication failure possibility.

• 한국경영과학회지
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• 제37권1호
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• pp.45-59
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• 2012

We analyze a transaction mechanism so-called the revenue sharing transaction model and its dynamics in a supply chain with two competing suppliers and a monopolistic retailer when the demand pattern is uncertain and the back-order is allowed in case. We assume that the products by the suppliers are substitutable each other with a certain degree even though their retail prices are different. It is proved that a supplier and the retailer in the supply chain have some room for enjoying the possibility of their increased profits comparing with the present ones by adopting the suggested revenue sharing scheme. Furthermore, such a transaction model is beneficial even to the customers by offering a lower retail price than before. On the contrary, we observe that another supplier which sticks to an existing transaction scheme is supposed to suffer some decrease in its profit as a result.

• 한국전자거래학회지
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• 제2권1호
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• pp.79-94
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• 1997

Commerce activities which are free form space and time constraint using a communication network are called Electronic Commerce(EC). Because of sending a commercial information using open network such as Internet in EC, they need the security of commerce information (payment information and purchase information), checking the integrity of transferring data and certifying all parts participated in commerce for a secure commerce. Recently Visa and MasterCard Co. released the Secure Electronic Transaction (SET) Protocol for secure payment card transaction on Internet. This paper proposes a Secure Electronic Commerce Transaction Model(SECTM) using SET in order to support the secure commerce on Internet. The proposed transaction model prevents merchant from abusing the cardholder's payment information (credit-card number etc.) and enables cardholder to shop securely in Electronic Shopping Mall.

• 정보보호학회논문지
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• 제17권1호
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• pp.81-88
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• 2007

온라인 거래에서, 투명성은 전자상거래에 대한 과세나 고객의 권리를 위한 주요 요소이다. 오프라인에서 거래에 대한 신뢰성은 금전등록기 개념을 사용해서 이루어지고 있는 것처럼, 우리는 거래의 투명성을 위한 온라인 개념의 거래 등록기 모델을 연구하였다. 비록 온라인 거래 등록기가 전자상거래법과 관련되어서 사용될 수 있지만, 여기서는 등록기의 메카니즘에 대한 연구만을 고려하였다. 거래 등록기는 디지털 영수증을 발행하며, 영수증은 본 논문에서 개발한 모델로 진위가 판별될 수 있다.

• 한국경영과학회지
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• 제37권3호
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• pp.117-134
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• 2012

We analyze a systematic relationship between transaction mechanisms and wholesale pricing schemes within a supply-chain with two competing suppliers and a monopolistic retailor. When one of the suppliers changes its transaction mechanism from an independent scheme to a cooperative one, then the wholesale prices of the suppliers become cheaper than before. When one supplier changes its transaction scheme to a cooperative one while the other supplier sticks to the existing independent transaction scheme, we show that the supplier with a cooperative transaction scheme can realize the increased profit via a profit sharing contract with the retailer but the supplier with independent transaction scheme can face the decreased profit. We also show that both suppliers can achieve the higher profits by adopting the cooperative schemes with the retailer.

• 무역학회지
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• 제44권3호
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• pp.155-170
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• 2019

This study examines the model of perceived risk, trust, and continuous transaction intentions presented in a study of the buying behavior in International Transaction. Although most of the trade transactions have been studied as a legal supplement, trade transactions are also purchasing behavior aimed at maintaining continuous transaction intentions between the parties. The study results confirmed that perceived risk could be separated into risk neutrality, risk - taking and risk aversion, and perceived risk had an effect on trust. In addition, the trust affected by perceived risk in the trade transaction model has a statistically significant effect on continuous transaction intentions. The study results confirm that the theoretical background used in previous studies of purchase behavior models is also effective in trade transaction.

• 대한산업공학회지
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• 제42권4호
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• pp.249-255
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• 2016

Recently, transaction data is accumulated everywhere very rapidly. Association analysis methods are usually applied to analyze transaction data, but the methods have several problems. For example, these methods can only consider one-way relations among items and cannot reflect domain knowledge into analysis process. In order to overcome defect of association analysis methods, we suggest a transaction data analysis method based on probabilistic graphical model (PGM) in this study. The method we suggest has several advantages as compared with association analysis methods. For example, this method has a high flexibility, and can give a solution to various probability problems regarding the transaction data with relationships among items.

• 농촌계획
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• 제30권2호
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• pp.1-11
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• 2024

Farmland transaction prices are affected by various factors such as politics, society, and the economy. The purpose of this study is to identify multiple factors that affect the farmland transaction price due to changes in the actual transaction price of farmland by farmland unit from 2016 to 2020. There are several previous studies analyzed the determinants of farmland transaction prices by considering spatial dependency. However, in the case of land transactions where the time and space of the transaction affect simultaneously, if only spatial dependence is considered, there is a limitation in that it cannot reflect spatial dependence that occurs over time. In order to solve these limitations, To address these limitations, this study builds a spatio-temporal autoregressive model that simultaneously considers spatial and temporal dependencies using farmland transactions in Jinju City as an example. As a result of the analysis, it was confirmed that there was significant spatio-temporal dependence in farmland transactions within the previous 30 days. This means that if the previous farmland transaction was carried out at a high price, it has a spatio-temporal spillover effect that indirectly affects the increase in the price of other nearby farmland transactions. The study also found that various location attributes and socioeconomic attributes have a significant impact on farmland transaction prices. The spatio-temporal autoregressive model of farmland prices constructed in this study can be used to improve the prediction accuracy of farmland prices in the farmland transaction market in the future, and it is expected to be useful in drawing policy implications for stabilizing farmland prices