• Asia Marketing Journal
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• v.9 no.2
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• pp.97-129
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• 2007

The critical link between consumer-based internet ordering and the delivery of the product to the consumer is a key success factor in online shopping. Market areas of online shopping company implies the range of space where products ordered from online shopping can be physically delivered to customers distributed over space with reasonable shipping cost and lead time through the physical distribution network. The average rate of growth in online shopping is 36% per year in Korea for the last 5 years. But there are no maps available that describe sales/delivery density of online shopping, few researches are focused on the short-term/long-term adaptation to demand increase by online shopping. In this paper (1) Maps of trade area are described indicating the sales/delivery density around the nation. (2) Empirical researches suggested that short-term adaptation to demand increase resulted in price reduction and service in enhancement of service quality in local transportation. But the long-term adaptation on the parts of parcel delivery industry are to be investigated in future researches.

• 한국HCI학회:학술대회논문집
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• 2008.02b
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• pp.165-169
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• 2008

무선 네트워크의 대역폭 향상 및 무선 단말기의 컨버전스화로 인해 다양한 데이터 서비스가 기능해 지고 있으며 특히 대기 화면은 이러한 모바일 서비스의 Entry Poin 로써 서비스 제공자 및 사용자의 요구에 의해 좀 더 많은 Customize 가 가능한 공간으로 점차 진화하고 있다. 이에 따라 국 내외 이동 통신사와 단말 제조사들은 각기 개성 있는 대기화면 모바일 위젯 서비스를 출시하고 있으나 대부분의 경우 서비스 제공자의 관점에서 기획되어 아직까지는 사용자들의 높은 호응을 받고 있지 않다고 판단된다. 본 연구에서는 사용자의 Latent 한 Core Needs 를 파악하기 위해 Ethnographic Observation 조사 기법과 Online Survey 및 FGI 를 병행하여 사용자가 일상생활에서 가치를 두는 시사점을 발굴하고 이를 통해 모바일 위젯 서비스를 기획/개발하는데 반영할 수 있는 UI Feature 들을 도출하였다.

• KDI Journal of Economic Policy
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• v.39 no.1
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• pp.83-102
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• 2017

Price control can restore efficiency in some cases, but an uncarefully designed policy fails to restore efficiency, yields side effects, or even exacerbates efficiency losses. This paper shows that the copyright royalty rule, which takes the greater of ad valorem royalties and perunit royalties, tends to fix the prices of final goods at a specific level. Such a rule weakens competition as it prevents prices from decreasing even when market conditions change, having negative effects on social welfare as well as consumer surplus. Counterfactual analyses using estimation results in the Korean online music service industry show that firms could have profitably reduced prices if the ad valorem rule had been applied instead, although they did not have an incentive to do so under the original combination rule.

• Annual Conference of KIPS
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• 2005.05a
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• pp.1461-1464
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• 2005

In contrast with conventional networks, mobile ad hoc networks usually do not provide online access to trusted authorities or to centralized servers, and they exhibit frequent partitioning due to link and node failures and node mobility. For these reasons, traditional security solutions that require online trusted authorities or certificate repositories, but those are not well-suited for securing ad hoc networks. Moreover, a fundamental issue of securing mobile ad hoc networks is to ensure mobile nodes can authenticate each other. Because of its strength and efficiency, public key and digital signature is an ideal mechanism to construct the authentication service. Although this is already mature in the internet application, providing public key based authentication is still very challenging in mobile ad hoc networks. In this paper I propose a secure public key authentication service based on clustering model and trust model to protect nodes from getting false public keys of the others efficiently when there are malicious nodes in the network.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2004.10a
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• pp.116-136
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• 2004

The objective of this study is to analyze the relationship between offline trust and use of online service focusing on Internet banking. For this purpose, we suggest an extended version of Technology Acceptance Model (TAM) that would explain use or acceptance of infer]nation technology especially in Internet based service areas. In order to connect offline trust with Internet banking use, TAM is extended by adding two variables - technical competence for security services that is one facet of trust on the bank's security technology and security risk that would influence use, perceived usefulness and perceived ease of use. Empirically our model is well proved with low significance level.

• Asia pacific journal of information systems
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• v.23 no.4
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• pp.85-102
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• 2013

This study proposes a web presence readiness model based on pre-payment service functions and a post-payment service function both of which embrace the major concerns of customers in the online purchasing context. Based on the concept of customer utility from the product itself and instrumental utility, the research model suggests four antecedents including, Perceived Economic Benefits, Product Search Support Quality, e-Shopping Method Diversity, and Post-Payment Support Quality. We empirically examined a proposed research model using data collected from online rating company websites. Among the four antecedents, post payment support quality is found to be the most influential determinant of customer evaluation on e-commerce websites. Based on the empirical results, the current study proposes an alternate model of web presence readiness. The findings of this study may provide an insight to field practitioners designing commercial websites. The implications and future research directions are further discussed.

• Journal of Engineering Education Research
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• v.26 no.4
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• pp.36-46
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• 2023

This paper presents a case study and online-offline (hybrid) course structure for project-oriented community-based service learning in order to solve real-world problems for society. It examines social issues and conduct student projects to develop solutions that can generate sustainable value. This course helps students to use their major knowledge to assess and solve the problems faced by the local community. The outcomes of this course conducted via online lectures and offline project activities are discussed. The operation of this blended type of social problem-solving course is also stated.

• Asia pacific journal of information systems
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• v.23 no.1
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• pp.21-43
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• 2013

Internet vendors are gradually realizing the importance of "locking-in" online customers in order to ensure profitability. Erection of switching barriers increases customers'lock-in and in turn may result in their willingness to pay price-premium for the same service. However, raising customer lock-in online is difficult because search costs are very low. Therefore, this study examines the effect of switching barriers (customer satisfaction, perceived value and relative advantage) on switching costs and the effect of switching costs on customer's willingness to pay more. Since switching costs and consequent relationships may depend upon the type of product therefore the research model in this study is examined for both search products and experience products. Data is collected through an online survey from two websites (one each for search product and experience product). The empirical results show the key role of switching costs in customers' willingness to pay more and the relationships among the four constructs. The theoretical and practical implications of this study are also discussed.

• Anxiety and mood
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• v.12 no.2
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• pp.79-85
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• 2016

Sexually abused victims suffer not only physical damage, but they may also experience an array of additional problems ranging from acute fear, depressed mood, anxiety, shame, or insomnia to long-term psychiatric disorders. Trauma Focused Cognitive Behavioral Therapy (TF-CBT) is known to have excellent therapeutic effects for trauma victims including victims of sexual violence. CBT treatment includes stress immunity training, relaxation training, and acceptance and commitment therapy. In foreign countries TF-CBT is carried out online in order to increase the therapeutic accessibility for the victim and improve the quality of the interview for the therapists. As a result, those victims who have difficulties in requesting external help, who live in remote areas, or who have limited time may now have access to the service and benefit from the online education programs. A website providing an online based TF-CBT program was initiated in Korea also. Through the website, victims and their guardians may obtain therapeutic information without the need for face-to-face meetings with therapists. Our goal is to create a system with this website which will provide therapeutic assistance to sexual violence victims and improve the quality of the counseling provided by the therapist.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.9 no.2
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• pp.600-619
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• 2015

We propose a cost-efficient hybrid algorithm for online location updates that efficiently combines feature point detection with the online trajectory-based sampling algorithm. Our algorithm is designed to minimize the average trajectory error with the minimal number of sample points. The algorithm is composed of 3 steps. First, we choose corner points from the map as sample points because they will most likely cause fewer trajectory errors. By employing the online trajectory sampling algorithm as the second step, our algorithm detects several missing and important sample points to prevent unwanted trajectory errors. The final step improves cost efficiency by eliminating redundant sample points on straight paths. We evaluate the proposed algorithm with real GPS trajectory data for various bus routes and compare our algorithm with the existing one. Simulation results show that our algorithm decreases the average trajectory error 28% compared to the existing one. In terms of cost efficiency, simulation results show that our algorithm is 29% more cost efficient than the existing one with real GPS trajectory data.