• 한국식생활문화학회지
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• 제26권6호
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• pp.673-681
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• 2011

The purpose of this study was to analyze the difference in bakery choice attributes according to consumers' general characteristics and purchasing behavior. Among 350 questionnaires distributed to bakery consumers, 277 complete questionnaires (79.1%) were analyzed. Bakery choice attributes were classified into five factors: "environment and image", "bakery product features", "location", "employee service", and "price and sales promotion"; the mean scores of these factors' importance levels were 3.59, 3.58, 3.49, 3.36, and 3.00, respectively. Males considered 'employee service' factor significantly more than did females. Further, the importance level of 'employee service' factor was significantly greater as consumer's age increased. The importance levels of 'bakery product features' and 'employee service' factors were considered significantly more by consumers who spent KRW10,000-15,000 than those who spent KRW5,000 or less. 'Price and sales promotion' was considered to be more important by consumers who obtained information from the Internet than from the TV and radio. 'Location' factor was considered to be more significant as purchasing frequency increased. Such differences in importance level of bakery choice attributes according to consumers' gender, age, job, and purchasing behavior should be considered and applied to the development of marketing strategies targeted at consumers.

• 한국동물위생학회지
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• 제32권4호
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• pp.391-397
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• 2009

Eurasian eagle owl (Bubo bubo kiautschensis) is a natural monument (No. 324) and is also classified as an endangered wildlife grade II the Ministry of Environment of Korea. Eurasian eagle owl is threatened by the human being. But the efficient rescue and treatment for Eurasian eagle owl are still problematic, due to lack of basic data. In this study, to obtain basic resources for establishing more efficient rescue system, we held a physical examination and measured size physical part. In addition, we analyzed blood sample and feces samples and autopsy. We conduct the physical examination with measuring tapes and scales for 16 live features and 11 dead features. After inhalation anesthesia take the blood samples from wing vein. Blood samples are analyzed in hematologic and chemistric methods. We collected the feces through individual floor of cages from 12 live features and conducted the feces analysis. Autopsy was conducted for 11 dead samples. In physical examination, the mean body weight and total length of live features was 2.26${\pm}$0.35kg, 61${\pm}$2.38cm, the mean body weight and total length of dead features was 1.57${\pm}$0.51kg, 59.31${\pm}$3.51cm. Mean PCV was 46.57${\pm}$4.97%, while mean TPP was 3.49${\pm}$0.57g/dL. In feces sample analysis, 9 of 12 owls(75%) were infested by gastrointestinal helminths. The infection rates were: Trematoda (41.7%), Capilaria sp.(66.7%), acanthocephalans (25%). In autopsy, we confirmed 11 features were infested by duplicated infection of more than 2 helminths. Result of this study will be used for establishing reference range for physical features, blood analysis in Eurasian eagle owl. Therefore, to obtain basic resources for establishing more efficient rescue system, we have to make long-term conservation plans for Eurasian eagle owl.

• 한국인터넷방송통신학회논문지
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• 제17권6호
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• pp.113-119
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• 2017

차세대 모바일 메시징 서비스인 RCS(Rich Communication Service)는 통신사업자가 독점적으로 제공하는 서비스로 제3의 개발자가 해당 기능을 이용한 앱을 개발하기 어렵다. 이를 해결하기 위하여 몇몇 방법이 제시되어왔으나 실제로 응용 가능한 수준에는 못 미치는 실정이다. 본 논문은 제3의 개발자가 RCS 서비스를 이용한 앱을 쉽게 개발할 수 있도록 웹 인터페이스 기반의 RCS 소프트웨어 프레임워크인 WebRSF를 제안한다. WebRSF는 1대 1 대화 기능을 제공하기 위해 복잡한 RCS 프로토콜을 간단한 웹 기반 프로토콜 변환하여 RCS 기능을 제공한다. 이를 위해 WebRSF를 이용하는 클라이언트가 WebRSF와 메시지를 어떻게 주고받는지 정의하였고, WebRSF와 기존 RCS 노드들과의 네트워크 구성도 및 메시지 흐름도를 명시하였다. 또한 성능 평가를 통해 WebRSF 클라이언트를 사용할 경우 RCS 클라이언트를 사용하는 것에 비하여 디바이스가 얼마나 부하를 더 받는지 성능 평가를 통해 실험해 보았으며 세션 수립 시에는 17% 감소된, 세션 수립 후에는 25% 증가된 부하를 받는다는 것을 알 수 있었다.

• 인터넷정보학회논문지
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• 제20권5호
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• pp.113-119
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• 2019

최근 상용화된 5G 이동통신의 주요한 특징은 High Data Rate와 Connection Density 그리고 Low Latency로 대표할 수 있는데, 이중 기존 4G와 가장 차별되는 특징은 Low Latency로 다양한 새로운 서비스 제공의 기반이 될 것이다. 이러한 특징을 활용한 서비스로는 AR, 자율주행 등이 검토되고 있으며 관련표준에서도 5G Network Latency 논의를 진행하고 있다. 그러나 서비스 관점의 E2E Latency 논의는 많이 부족한 것이 사실이다. 5G에서 Low Latency를 달성을 위한 최종목표는 RTD 기준 Air Interface 1ms 달성으로 이는 '20년 초 Rel-16을 통한 URLLC(Ultra-reliable Low Latency Communications)를 통해 가능하며, 추가적으로 MEC(Moble Edge Computing)를 통한 Network latency 감소도 연구 중이다. 전체 5G E2E Latency는 5G Network 관련 외에도 다양한 요인이 존재하는데, 주요 요인으로는 5G Network과 서비스 제공을 위한 IDC Server 사이의 경로에 놓인 선로/장비 Latency, 단말 App과 Server 내 서비스 처리를 위한 Processing Latency 등이 존재한다. 한편, 서비스 초기 Setup을 위한 Latency와 서비스가 지속 중인 경우의 Latency를 구분하여 세부 서비스 요구사항에 대하여 연구하는것도 필요한데, 이를 위해 본 논문에서는 서비스 초기 Setup과 관련하여 다음과 같은 세가지 요인에 대하여 검토를 진행하였다. 첫째로 (1) Data호 Setup시에 발생 가능한 Latency, 둘째 전력 효율화를 위한 (2) CRDX On/Off에 따른 영향, 마지막으로 (3) H/O가 발생되는 경우에 Latency에 대하여 Latency에 미치는 영향을 실험과 분석을 제시했다. 이를 통해 우리는 Low Latency가 필요한 서비스의 초기 Setup시에 Latency와 관련된 서비스 요구사항 및 기획에 기여할 수 있을 것으로 기대한다.

• Journal of Information Processing Systems
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• 제19권3호
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• pp.289-301
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• 2023

Due to the development and dissemination of modern technology, anyone can easily communicate using services such as social network service (SNS) through a personal computer (PC) or smartphone. The development of these technologies has caused many beneficial effects. At the same time, bad effects also occurred, one of which was the spam problem. Spam refers to unwanted or rejected information received by unspecified users. The continuous exposure of such information to service users creates inconvenience in the user's use of the service, and if filtering is not performed correctly, the quality of service deteriorates. Recently, spammers are creating more malicious spam by distorting the image of spam text so that optical character recognition (OCR)-based spam filters cannot easily detect it. Fortunately, the level of transformation of image spam circulated on social media is not serious yet. However, in the mail system, spammers (the person who sends spam) showed various modifications to the spam image for neutralizing OCR, and therefore, the same situation can happen with spam images on social media. Spammers have been shown to interfere with OCR reading through geometric transformations such as image distortion, noise addition, and blurring. Various techniques have been studied to filter image spam, but at the same time, methods of interfering with image spam identification using obfuscated images are also continuously developing. In this paper, we propose a deep learning-based spam image detection model to improve the existing OCR-based spam image detection performance and compensate for vulnerabilities. The proposed model extracts text features and image features from the image using four sub-models. First, the OCR-based text model extracts the text-related features, whether the image contains spam words, and the word embedding vector from the input image. Then, the convolution neural network-based image model extracts image obfuscation and image feature vectors from the input image. The extracted feature is determined whether it is a spam image by the final spam image classifier. As a result of evaluating the F1-score of the proposed model, the performance was about 14 points higher than the OCR-based spam image detection performance.

• Asia pacific journal of information systems
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• 제13권2호
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• pp.145-170
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• 2003

Open Decision Support System(DSS) is an automated and transparent system that is built to be shared both within and across organizations. The open DSS has been thought to be a set of decision components that are communicating through Web protocols. These characteristics intuitively invite the Web services concepts, which are currently one of the new trends in network-based business services. However, web services still are not active enough to be autonomous, and to provide for composing functionalities. These lead to the motivation on building a sophisticated web service to contain these features and to utilize web services on behalf of the user. This paper aims to propose a new concept of Meta Web Service, a web service-based open DSS. Decision modules in a dynamic and open DSS can be viewed as a web service. The Meta Web Service understands the users problem statement with ontology, performs web service discovery, web service composition, and automatically generates codes for composite web service execution. A prototype of example web service has been developed to show the feasibility of the proposed idea.

• ETRI Journal
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• 제33권1호
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• pp.128-131
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• 2011

This letter describes a file format designed for interactive music service where users are able to recompose music based on their own preferences. The proposed design utilizes the flexible features of the ISO base media file format (ISO/IEC 14496-12, ISO-BMFF). The techniques offered in the proposed file format enable compact storage and efficient preset management, allowing users to recompose music with ease and convenience. Additionally, an implementation scheme for an interactive music player is shown along with its results.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제5권2호
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• pp.359-373
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• 2011

Demand for rich media services is rapidly increasing and, as a result, several technologies are competing to deliver rich media services to mobile, resource-constrained devices. In this paper, we explore the existing rich media technologies and analyze their key features. In addition, in order to accommodate the new requirements introduced by emerging service models, such as service convergence, these technologies must evolve from their current status. We examine how the community intends to achieve this.

• 대한인간공학회지
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• 제31권1호
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• pp.7-13
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• 2012

Objective: This paper discussed the characteristics of service design process by comparing with product design process. Background: Service design has different design outcomes, project participants, and design constraints than product design. Method: The comparison took two perspectives: one was shorter-term, design process of a service, and the other was longer-term, process of service development. Results: It was discussed that service design process is similar in overall, but has four differences. First, the role of design is required earlier and longer in the process, which means service designers need to participate from the begging of the project to service operation. Thus service designers are required to have holistic viewpoint of the project. Second, service design requires many design expertise thus collaboration needs to be well defined and managed throughout the process. Third, since service provider has limited resources, regulations, and market competition, some service features cannot be provided. Service designers are required to know both customers' needs and functional constraints. Last, service design is highly coupled with service operation. Designing and providing service happens at the same time and evolves over time. Conclusion: Consequently it was asserted that the role of designers in service design is essential for success. In specific, the role of service design architect, who manages design process and design outcomes, is a new and important role in service design project.

• 한국의류학회지
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• 제31권4호
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• pp.574-583
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• 2007

This study aimed to look into the features of the hair beauty service components and the effects of these elements on customer satisfaction and word-of-mouth intention. Subjects were 20's-40's women and survey methods such as frequency analysis, t-test, ANOVA, factor analysis, reliability analysis, and regression analysis were used. Results were as follows: First, hair beauty service were composed of eight factors such as facilities of hair beauty salon, employee's kindness, amusement facilities, light refreshments, guidance to a process of hair style, keeping service for personal belongings, reservation service, and customer management. Second, the effects on customer satisfaction was significantly affected by facilities of hair beauty salon, employee's kindness, guidance to a process of hair style, customer management, keeping service for personal belongings, light refreshments. Third, customer satisfaction with hair beauty service affected the word-of-mouth intention.