• Journal of the Korean Society for information Management
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• v.33 no.3
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• pp.219-238
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• 2016

With the purpose of looking into the information service study tendency, targeted at university library, this performed a content analysis of the articles in print from 2006 to 2015 on major four academic journals of Library and Information Science. Investigation items were study number of information services, subsidiary themes classified with information service functions, study method, collection method, user object, and theory study vs. service study in reality. As a result, information service studies were performed more than other areas. Information service functions targeted at the study were that of information supply. Major subsidiary themes were electronic information service, information literacy instruction, and information (reference) services general. Major study methods were survey research method,, case study, and major material collection methods were questionnaire and web-based research methods. Major user studies were targeted at undergraduates, and service study in reality took a great share.

• International Commerce and Information Review
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• v.9 no.3
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• pp.255-271
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• 2007

It is widely acknowledged that Chinese economy becomes a center of world economy and takes up a considerable portion of the trade in Northeastern Asia. Due to the investment and the logistics modernization strategy of Chinese government, recognizing the importance of logistics, the competitiveness of Chinese major ports is tending upward rapidly. Therefore, it is necessary to analyze the competitiveness of Chinese major ports in order to develop the logistics strategy of Korea by cooperating or competing with Chinese ports. In this study, we analyzed the competitiveness of 10 major Chinese ports with Data Envelopment Analysis(DEA). Through the analysis, we could investigate the efficiency of 10 major Chinese ports and figure out the trend of the efficiency within recent 10 years. In order for Korea to achieve the national strategic goal, becoming a logistics hub in East Asia, it is obvious to understand the competitiveness of Chinese major ports which are major competitor and strategic partner at the same time. This study will be useful to understand the competitiveness of Chinese ports and to develop a logistics hub strategy of Korea.

• Korean Journal of Remote Sensing
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• v.33 no.2
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• pp.249-255
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• 2017

Antarctica isimportant area in order to understand climate change. In addition, this area is complex region where indicate warming and cooling trend according to previous studies. Therefore, it is necessary to understand the long-term variability of Antarctic energy budget. Net radiation, one of energy budget factor, is affected by albedo, and albedo cause negative radiative forcing. It is necessary to analyze a relationship between albedo and net radiation in order to analyze relationship between two factors in Antarctic climate changes and ice-albedo feedback. In thisstudy, we calculated net radiation using satellite data and performed an analysis of long-term variability of net radiation over Antarctica. In addition we analyzed correlation between albedo. As a results, net radiation indicates a negative value in land and positive value in ocean during study periods. As an annual changes, oceanic trend indicates an opposed to albedo. Time series pattern of net radiation is symmetrical with albedo. Correlation between the two factors indicate a negative correlation of -0.73 in the land and -0.32 in the ocean.

• Korean Journal of Remote Sensing
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• v.32 no.6
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• pp.741-746
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• 2016

Albedo is one of the climate variables that modulate absorption of solar energy, and its retrieval is important process for climate change study. High spatial resolution and long-term consistent periods are important considerations in order to efficiently use the retrieved albedo data. This study retrieved surface broadband albedo based on Landsat 8 as high resolution which is consistent with Landsat 7. First of all, we analyzed consistency of Landsat 7 channel and Landsat 8 channel. As a result, correlation coefficient(R) on all channels is average 0.96. Based on this analysis, we used multiple linear regression model using Landsat 7 albedo, which is being used in many studies, and Landsat 8 reflectance channel data. The regression coefficients of each channel calculated by regression analysis were used to derive a formula for converting the Landsat 8 reflectance channel data to broadband albedo. After Landsat 8 albedo calculated using the derived formula is compared with Landsat 7 albedo data, we confirmed consistency of two satellite using Root Mean Square Error (RMSE), R-square ($R^2$) and bias. As a result, $R^2$ is 0.89 and RMSE is 0.003 between Landsat 7 albedo and Landsat 8 albedo.

• Korean Journal of Remote Sensing
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• v.33 no.3
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• pp.333-338
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• 2017

We compared sea ice concentration(SIC) and sea ice extent(SIE) using EUMETSAT Ocean and Sea Ice Satellite Application Facilities(OSI SAF) and NASA Team(NT) sea ice algorithm in the Arctic during 1980-2010 to investigate the difference between sea ice data applied different algorithms. SIC and SIE of the two data showed different consistency by season and by sea area. Seasonally, SIC of OSI SAF was 0.85 % overall, 0.48 % in spring, 0.97 % in summer, 1.38 % in autumn and 0.66 % in winter higher than NT SIC. By sea area, OSI SAF SIC was 2.7 %, SIE was $198,000km^2$ higher than NT in Arctic Ocean, but in Lincoln Sea, OSI SAF SIC was 2.3 %, SIE was $20,000km^2$ lower than NT.

• Journal of Families and Better Life
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• v.14 no.4
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• pp.107-128
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• 1996

This study is conducted to examine elderly consumers' information needs according to information sources. And the relation with related variables purchasing problems of the elderly consumers and their needs according to information sources is investigated. The data was collected from 782 elderly consumers ages range from 55 to 74 and major findings are as follows: (1) Their needs according to information sources are relatively high and followed by neutral information source department store personnels and advertisements (2) The more esperiences they have and the more seriously they perceive their purchasing problems in a relatively poor conditon of a market the more information they want from department store personnels. (3) How many experiences they have and how much they perceive seriously in purchasing problems are the major intervening variables which have strong positve effects on the needs. The experiences show the strongest effects on the needs. The level of the percept on is strongly related to the needs and neutral information source is the major effect among the information sources.

• Asia pacific journal of information systems
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• v.8 no.1
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• pp.103-124
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• 1998

The recent information society is affected by new technologies including EC(Electronic Commerce), CALS(Commerce At Light Speed), EDI(Electronic Data Interchange), telecommuting and teleconferencing. The research goal of this paper is to identify major failure factors to reduce the dysfunction of EC and to suggest possible strategies that overcome those obstacles. The research methodologies of major failure factors are very similar to those of critical success factors which were widely used in MIS research areas. Ideally EC provides the possibility of a win/win situation for vendors and consumers. A survey study was performed using questionnaires. The factor analysis was performed to identify failure factors. Several hypotheses were set up to identify the major failure factors to reduce the dysfunction of EC. The regession analysis was performed to test those hypotheses and to understand the relationships between the major failure factors identified and the performance variables such as satisfaction, usage, and usefulness. Finally, the paper suggests alternatives to activate EC in terms of regulations, social rules, a technological model, etc.

• Management & Information Systems Review
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• v.12
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• pp.37-52
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• 2003

An informatization evaluation is becoming a major issue among vocational colleges, as the 21th century begins. This century is characterized as Knowledge and Information era. Thus it is popular for administrative organizations to use Information Technologies as major tool to innovate themselves. The main objective of this study is develop evaluation indexes on applications of information technologies for vocational colleges because they must operate their education services by using management principles. Four major indexes were recommended to evaluate their information environment of educational service as follows. 1. Strategic Information System 2. Environmental Factors of Information System 3. Informational Resources 4. Utilization of Information Technologies Each index has 4 variables to identify the level of informatization and every variable is consisted of several questions. Such an evaluation system will be applied for vocational colleges to know their own situation of IT application and to develop managerial strategies by using IT. This system also will be useful to compare you with your potential competitors and to find appropriate polices of IT application by measuring the indexes at different points of time.

• Journal of Digital Convergence
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• v.12 no.1
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• pp.599-605
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• 2014

In this paper, we analyzed academic curriculum of information security major in domestic university and in center of education contents, reviewed about eduction distinction direction in each university. Also in center of domestic information security industry, it compared and analyzed status of recruitment demand in each information security range and training student in the university, and analyzed whether to meet the degree of information security workforce. In addition, we were examined future needs and direction of the convergency field of information security personnel in terms of information security major curriculum.

• Proceedings of the Korea Information Processing Society Conference
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• 2017.04a
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• pp.1141-1144
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• 2017

사물인터넷의 발전과 보급에 따라 스마트 농장 산업이 활발히 이루어지고 있다. 하지만 스마트 농장에 사용하는 기존 토양 습도 센서를 스마트 농장이나 화분에 사용하는 것이 부적절 하다는 것을 실험을 통해 입증한다. 이를 해결하기 위해 반영구적 사용이 가능한 토양습도 센서를 개발한다.