• Korean Journal of Agricultural and Forest Meteorology
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• v.25 no.2
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• pp.99-107
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• 2023

Recently, the abnormal weather events and crop damages occurred frequently likely due to climate change. The importance of meteorological data in agricultural research is increasing. Researchers can download weather observation data by accessing the websites provided by the KMA (Korea Meteorological Administration) and the RDA (Rural Development Administration). However, there is a disadvantage that multiple inquiry work is required when a large amount of meteorological data needs to be received. It is inefficient for each researcher to store and manage the data needed for research on an independent local computer in order to avoid this work. In addition, even if all the data were downloaded, additional work is required to find and open several files for research. In this study, data collected by the KMA and RDA were uploaded to GitHub, a remote storage service, and a package was created that allows easy access to weather data using Python. Through this, we propose a method to increase the accessibility and usability of meteorological data for agricultural personnel by adopting a method that allows anyone to take data without an additional authentication process.

• Journal of Intelligence and Information Systems
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• v.16 no.3
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• pp.181-199
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• 2010

As rapid progress of population aging and strong interest in health, the demand for new healthcare service is increasing. Until now healthcare service has provided post treatment by face-to-face manner. But according to related researches, proactive treatment is resulted to be more effective for preventing diseases. Particularly, the existing healthcare services have limitations in preventing and managing metabolic syndrome such a lifestyle disease, because the cause of metabolic syndrome is related to life habit. As the advent of ubiquitous technology, patients with the metabolic syndrome can improve life habit such as poor eating habits and physical inactivity without the constraints of time and space through u-healthcare service. Therefore, lots of researches for u-healthcare service focus on providing the personalized healthcare service for preventing and managing metabolic syndrome. For example, Kim et al.(2010) have proposed a healthcare model for providing the customized calories and rates of nutrition factors by analyzing the user's preference in foods. Lee et al.(2010) have suggested the customized diet recommendation service considering the basic information, vital signs, family history of diseases and food preferences to prevent and manage coronary heart disease. And, Kim and Han(2004) have demonstrated that the web-based nutrition counseling has effects on food intake and lipids of patients with hyperlipidemia. However, the existing researches for u-healthcare service focus on providing the predefined one-way u-healthcare service. Thus, users have a tendency to easily lose interest in improving life habit. To solve such a problem of u-healthcare service, this research suggests a u-healthcare recommender system which is based on collaborative filtering principle and social network. This research follows the principle of collaborative filtering, but preserves local networks (consisting of small group of similar neighbors) for target users to recommend context aware healthcare services. Our research is consisted of the following five steps. In the first step, user profile is created using the usage history data for improvement in life habit. And then, a set of users known as neighbors is formed by the degree of similarity between the users, which is calculated by Pearson correlation coefficient. In the second step, the target user obtains service information from his/her neighbors. In the third step, recommendation list of top-N service is generated for the target user. Making the list, we use the multi-filtering based on user's psychological context information and body mass index (BMI) information for the detailed recommendation. In the fourth step, the personal information, which is the history of the usage service, is updated when the target user uses the recommended service. In the final step, a social network is reformed to continually provide qualified recommendation. For example, the neighbors may be excluded from the social network if the target user doesn't like the recommendation list received from them. That is, this step updates each user's neighbors locally, so maintains the updated local neighbors always to give context aware recommendation in real time. The characteristics of our research as follows. First, we develop the u-healthcare recommender system for improving life habit such as poor eating habits and physical inactivity. Second, the proposed recommender system uses autonomous collaboration, which enables users to prevent dropping and not to lose user's interest in improving life habit. Third, the reformation of the social network is automated to maintain the quality of recommendation. Finally, this research has implemented a mobile prototype system using JAVA and Microsoft Access2007 to recommend the prescribed foods and exercises for chronic disease prevention, which are provided by A university medical center. This research intends to prevent diseases such as chronic illnesses and to improve user's lifestyle through providing context aware and personalized food and exercise services with the help of similar users'experience and knowledge. We expect that the user of this system can improve their life habit with the help of handheld mobile smart phone, because it uses autonomous collaboration to arouse interest in healthcare.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.36 no.10B
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• pp.1222-1232
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• 2011

RFID/USN core technologies for ubiquitous computing, It is possible to use variety of sensors, direct processors, and wireless network technology that easily collect the actual physical environment and can monitor information remotely. Especially the healthcare industry and services combined with U-Healthcare that have international competitiveness in the medical field. But the USN, standard management system of RFID such as EPCglobal architecture framework, the lack of interoperability issues and the global sensor network implementation. In this paper, a system for managing sensor nodes of the USN, USN of SIP-based management system (UMS) is proposed. UMS support Session Initiation Protocol (SIP), provide session management and mobility capabilities, that is based on Internet standard protocol. UMS architecture of the existing SIP architecture, added USN User Agent (UUA) and the USN Name Server (UNS) that the location of sensor nodes should be possible to trace. UUA on behalf of the limited capacity of the location of the sensor nodes to perform the registration process, UNS to track the location of the sensor nodes to provide name resolution services. The proposed management system has the advantage of internet applications such as Web services interoperability and easy to recycle existing resources with other SIP-based because it uses the Internet standard protocol SIP. In this paper we propose is based on the UMS blood temperature management system is verified through the scenario.

• The Journal of the Convergence on Culture Technology
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• v.8 no.1
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• pp.483-497
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• 2022

Recently, due to COVID-19, non-face-to-face online lectures are being held all over the world. In higher education in the post-corona era, distance learning has become the main teaching and learning method. At this time, Metaverse is being proposed as a new alternative. Metaverse has basic elements such as avatars, 3D space, and activities accompanied by interaction, which can be seen as a difference compared to existing VR (Virtual Reality) contents. This study designed and built an educational metaverse platform that can be applied to actual lectures by reflecting the three elements of the metaverse.In addition, we implemented a cross-device-platform that supports various devices such as HMDs, smartphones, tablets, and PCs by reflecting user requirements through usability tests such as middle school, high school, college students, and parents, so that anyone can easily participate in Metaverse lectures. Currently, the metaverse platform is being developed and serviced in various ways, but there are hardly any services designed for education. Just as services such as Zoom, the existing video conferencing solution, were used for non-face-to-face education, some functions of the currently serviced metaverse are utilized for education and used in the form of a one-time event. The educational metaverse platform developed through this study is expected to be a reference in constructing the metaverse for education in the future.

• Journal of Intelligence and Information Systems
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• v.19 no.2
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• pp.157-175
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• 2013

Since Korean government announced 'Smartwork promotion strategy' in 2010, Korean firms and government organizations have started to adopt smartwork. However, the smartwork has been implemented only in a few of large enterprises and government organizations rather than SMEs (small and medium enterprises). In USA, both Yahoo! and Best Buy have stopped their flexible work because of its reported low productivity and job loafing problems. In addition, according to the literature on smartwork, we could draw obstacles of smartwork adoption and categorize them into the three types: institutional, organizational, and technological. The first category of smartwork adoption obstacles, institutional, include the difficulties of smartwork performance evaluation metrics, the lack of readiness of organizational processes, limitation of smartwork types and models, lack of employee participation in smartwork adoption procedure, high cost of building smartwork system, and insufficiency of government support. The second category, organizational, includes limitation of the organization hierarchy, wrong perception of employees and employers, a difficulty in close collaboration, low productivity with remote coworkers, insufficient understanding on remote working, and lack of training about smartwork. The third category, technological, obstacles include security concern of mobile work, lack of specialized solution, and lack of adoption and operation know-how. To overcome the current problems of smartwork in reality and the reported obstacles in literature, we suggest a novel smartwork service model based on NFC(Near Field Communication). This paper suggests NFC-based Smartwork Service Model composed of NFC-based Smartworker networking service and NFC-based Smartwork space management service. NFC-based smartworker networking service is comprised of NFC-based communication/SNS service and NFC-based recruiting/job seeking service. NFC-based communication/SNS Service Model supplements the key shortcomings that existing smartwork service model has. By connecting to existing legacy system of a company through NFC tags and systems, the low productivity and the difficulty of collaboration and attendance management can be overcome since managers can get work processing information, work time information and work space information of employees and employees can do real-time communication with coworkers and get location information of coworkers. Shortly, this service model has features such as affordable system cost, provision of location-based information, and possibility of knowledge accumulation. NFC-based recruiting/job-seeking service provides new value by linking NFC tag service and sharing economy sites. This service model has features such as easiness of service attachment and removal, efficient space-based work provision, easy search of location-based recruiting/job-seeking information, and system flexibility. This service model combines advantages of sharing economy sites with the advantages of NFC. By cooperation with sharing economy sites, the model can provide recruiters with human resource who finds not only long-term works but also short-term works. Additionally, SMEs (Small Medium-sized Enterprises) can easily find job seeker by attaching NFC tags to any spaces at which human resource with qualification may be located. In short, this service model helps efficient human resource distribution by providing location of job hunters and job applicants. NFC-based smartwork space management service can promote smartwork by linking NFC tags attached to the work space and existing smartwork system. This service has features such as low cost, provision of indoor and outdoor location information, and customized service. In particular, this model can help small company adopt smartwork system because it is light-weight system and cost-effective compared to existing smartwork system. This paper proposes the scenarios of the service models, the roles and incentives of the participants, and the comparative analysis. The superiority of NFC-based smartwork service model is shown by comparing and analyzing the new service models and the existing service models. The service model can expand scope of enterprises and organizations that adopt smartwork and expand the scope of employees that take advantages of smartwork.

• Journal of the Korean Society of Food Science and Nutrition
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• v.35 no.8
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• pp.1076-1087
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• 2006

The purpose of this study was to identify critical control points of service encounter by types of restaurants in order to manage moment of truth when customers encounter services. Questionnaires were collected from 812 customers (aged 15 years or older) who had used restaurants in Seoul, from October 24, 2005 to November 6, 2005. The main results of this study were as follows: Statistically significant differences were shown between importance and performance of interaction quality, physical environment quality and outcome quality. Significant differences were also shown in importance and performance of interaction and physical environment quality, and performance of outcome quality by restaurant types but no significant difference was indicated in importance of outcome quality by restaurant types. That is, the importance of outcome quality, which means the quality of food, was regarded as important by customers who use restaurants regardless of types of restaurants. The result of examining interaction quality showed that family restaurants managed waiting customers quite well and provided information on the Internet homepage. Performance of responding to customers with complaints was rated the highest in family restaurants. Regarding physical environment quality, importance and performance scores significantly differed by types of restaurants in order of fine-dining restaurants, family restaurants, and fast-food restaurants. In terms of service encounter quality, items whose importance scores were high but performance scores were low in importance-performance analysis matrix were 'quality of provided food is always uniform' and 'the space between other tables is enough' for fine-dining restaurants. In family restaurants, 'size of chairs or tables is enough', and 'the space between other tables is enough' were included in the items, while 'interior facilities are attractive', 'size of chairs and tables is enough', and 'the space between other tables is enough' were included in the items in case of fast-food restaurants. A difference was indicated depending on types of restaurants.

• Annual Conference of KIPS
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• 2006.05a
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• pp.1467-1470
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• 2006

유비쿼터스 환경중 상황에 따라 필요한 행위를 컴퓨터가 수행하여 사용자 각각의 특성에 따라 서비스를 할 수 있는 가장 좋은 것이 헬스케어 분야이다. 기존 헬스케어 시스템은 클라이언트/서버 환경으로 많은 환자들의 생체 신호 데이터가 실시간으로 서버로 전송될 때 서버의 일정 수용 한계를 넘어서게 되어 심한 경우 서버가 다운되는 현상이 발생할 수 있다. 이는 긴급한 환자의 처리에 대처하지 못하는 심각한 상황을 초래 할 수 있다. 또한 생체 신호를 보내는 모바일 디바이스의 자체적으로 지원되는 자원 부족으로 환자와 병원 중앙 서버와의 원활한 커뮤니케이션의 제공을 보장하지 못하는 단점도 있다. 이런 문제점을 해결하기 위하여 본 논문에서는 중간에서 환자와 병원사이의 중간 역할을 하는 써로게이트 시스템과 멀티 에이전트 시스템을 제안한다. 멀티에이전트 시스템은 중앙집중적 부하를 줄이고 유연성 있고 복잡한 처리가 가능하도록 한다. 이는 하나의 에이전트로 해결하지 못하는 복잡한 문제의 해결을 여러 에이전트의 협동을 통해 작업을 수행한다. 이를 위해서 본 논문에서는 JADE 를 기반으로 하는 에이전트 기술을 적용하였다. 모바일 디바이스에 인가되지 않은 접근을 막기 위한 수단으로서, 모든 메시지는 써로게이트를 통해 전달된다. 또한 써로게이트를 통해 로컬 및 원격의 에이전트를 쉽게 다룰 수 있다

• Proceedings of the IEEK Conference
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• 2000.06c
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• pp.89-92
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• 2000

최근 인터넷 이용이 증가하면서 원격 교육자료, 전자상거래용 자료 등 여러 이용자가 사용하는 자료를 하나의 서버가 아니라 분산된 형태로 나누어 관리하는 것이 통신량을 줄이기 위해 점차 중요시되고 있다. 특히 멀티미디어 자료는 데이터 량이 많으므로 이용자에게 가까운 서버에 분산 관리하는 것이 더욱 필요하다. 본 논문에서는 CORBA 표준을 따르는 미들웨어를 사용하여 인터넷으로 상호 연결된 임의의 시스템에 자료를 분산 관리할 수 있는 분산형 자료 관리 시스템 DDM(Distributed Data Manager)을 구축하였다. DDM은 크게 나누어 사용자 관리, 데이터 관리, 시스템 상태 관리 기능을 제공하며 단순히 분산 자료의 위치만을 관리하는 것이 아니라, 자료를 종류별 또는 용도별로 통합된 category를 관리한다. DDM은 분산 자료의 통합관리와 시스템 상태 관리를 위해서 주 에이전트(Primary Agent, 이하 PA)와, 이용자에게 직접 서비스를 제공하는 보조 에이전트(Local Agent, 이하 LA)를 중심으로 구성된다. DDM은 모든 자료에 대한 현재 상태를 관리하는데, 자료의 등록, 수정, 삭제 등의 요구가 보조 에이전트를 통하여 실시간으로 이루어지며 자료의 통합 관리와 백업 관리는 주 에이전트가 담당한다. 한편 DDM는 자바와 JDBC를 사용하여 구축함으로써 임의의 플랫폼과 데이터베이스를 이용할 수 있게 하였다.

• The Journal of Information Technology and Database
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• v.1 no.1
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• pp.83-106
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• 1994

본 연구는 정보기술에 관련된 신문기사의 내용과 성격에 관하여 분석하였다. 동아일보와 조선일보양대 일간지를 88년 1월 부터 92년 12월 까지 5년동안 조사하였으며 총 1551건의 정보기술 관련 기사를 분석하였다. 조사결과를 보면 1988년 부터 1992년 사이에 양대 신문에 나타난 정보기술 관련기사가 점점 더 증가하는 추세를 보였으며 이는 정보화사회의 도래와 함께 정보기술이 우리사회의 여러분야로 확산되고 있음을 잘 보여주고 있다고 하겠다. 기사의 내용은 원격통신, 신제품 개발, 컴퓨터관련 교육, 하드웨어와 소프트웨어의 개발과 유통 등에 관련된 기사가 주류를 이루었으며 그외에 공장자동화, 사무자동화, 가사자동화, 컴퓨터관련 범죄, 데이타베이스, 지역정보화, 멀티미디어 등에 관한 주제가 다루어졌다. 한편, 정보기술 관련기사의 성격은 기존의 신문기사에서 부정적인 기사가 주류를 이루고 있는 것과는 달리 긍정적인 기사가 큰 비중을 차지하고 있는 것으로 드러났다. 이는 정보기술이 비교적 새로운 분야이므로 정보기술의 부정적인 측면보다 긍정적인 측면을 부각시키고 있기 때문인 것으로 판단된다. 그러나 최근의 기사에서는 컴퓨터 사용에 관련된 문제점, 컴퓨터를 이용한 범죄, 개인의 프라이버시 침해 등 부정적인 측면의 문제도 제기되고 있다. 신문기사의 내용분석에 의하면 기업의 업종에 따라 정보기술의 활용면에서도 분명한 차이를 보여주고 있는데 제조업의 경우 기업의 내부 물적활동, 생산활동, 외부 물적활동에 관한 기사들이 많았으며 서비스업종의 경우에는 고객에 대한 협상력을 증가시키는데 관련된 기사들이 많았고, 하드웨어나 소프트웨어 산업의 경우에는 고객에 대한 협상력을 증가시키는 문제와 함께 대체재의 개발에 관련된 기사도 많이 등장하였다.

• Research in Community and Public Health Nursing
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• v.25 no.4
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• pp.270-281
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• 2014

Purpose: The purpose of the study was to understand low-income elders' experiences of community-based u-Health services. Methods: Qualitative data were collected from 11 participants. All interviews were recorded and transcribed verbatim. The transcribed data were analyzed using qualitative content analysis. Results: Three themes and eight sub-themes emerged as a result of analysis. The three main themes were 'recovered confidence and health condition,' 'trial and error in change,' and 'hope.'The eight sub-themes were 'the burden and efforts to overcome it in using bio-signal device,' 'ambivalence due to changing lifestyle,' 'increase of care time, decrease of pressure', 'conflict under environmental constraints,' 'difficulty in prioritizing health management,' 'discouragement in handling new devices,' 'desire not to be a burden to their children-gradual fulfillment of learning needs,' and 'long for broadening coverage range of services.' Conclusion: The findings of this study demonstrate that low-income elders among the participants have different needs in using u-Health services. Therefore, health professionals need to give personalized education to deal with their conflicts and requirements, especially emotional and environmental support in order for them to successfully accept the u-Health services for self-care.