• Journal of the Korean Operations Research and Management Science Society
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• v.37 no.4
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• pp.211-223
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• 2012

This study purposed to evaluate the influences of rival hospitals on the number of patients who visited the a study territory hospital. Spatial analysis technique was used to measure the impact of rival hospitals in study region. Selected hospitals were all medical school affiliated hospitals which were located in Daejeon metropolitan city and Chungchungnamdo. Patient data was collected from the claims data of the study hospital, and the number of inpatient and outpatients who visited the study hospital between January and June in 2008 were calculated on the smallest administrative district, Eup, Myeon, and Dong, in study region. To control the differences of regional characteristics among Eup, Myeon, Dong, socio-economic variables (total population, number of people aged over 65, number of basic livelihood security recipients, distance from the study hospital to the centroid point of each Eup, Myeon, Dong, number of business, and number of employees) were included in analysis model. These variables were collected from the annual year book of city as well as county located in study region. Cluster analysis classified the study region into three groups by using the difference of between th actual number of inpatient/outpatient and the predicted number of inpatient/outpatient in Eup, Myeon, and Dong. Most areas around the rivalry hospitals were categorized into same group. Multiple regression analysis indicated that areas around rivalry hospitals had statistically significantly negative relationship with the number of inpatients and outpatients who visited the study hospital. As the buffer size was increased from 5Km to 10Km, the standardized regression coefficients were decreased. These study results confirmed that rivalry hospitals in region had negative impacts on the performance of hospitals. It suggests that hospitals will require not only to select their location to minimize the effects of rivalry hospitals, but also to establish their strategy to cope with the rivalry's threats in their region.

• Journal of Korea Multimedia Society
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• v.21 no.3
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• pp.358-368
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• 2018

The mobile characteristics of the smart phone are well suited to on-the-site oriented services and are being utilized in a variety of ways. However, since most applications operate on a central server basis, Internet access is inevitable, and there are various problems such as an increase in server maintenance cost and security deterioration. Although researches have been proposed to utilize the smart phone itself as a server to improve it, these methods are based on downsizing the PC-based web server or modifying the smart phone kernel. These methods have the problems that a end user has to use the rooting, and they are not able to effectively utilize various communication means of a smart phone. In this paper, we propose a design and implementation of an application level smart phone web server. The server receives the document request from the remote via the Internet and in the local area using the WPAN. At this time, the web document is stored as an internal file structure of the smart phone application. We proposed the phttp protocol which uses server's phone number as ID for document request. Through the implementation, we analyzed the capacity and latency of stored data and its effectiveness is evaluated.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.22 no.6
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• pp.881-887
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• 2018

Various services using smart phones are being provided, and a variety of services are also provided in payment fields. Since the mobile payment services is closely related to the monetary part, various characteristics of the mobile system have a close relation with use trust. In this study, accessibility, compatibility, and security were selected as important factors in the mobile payment systems. We will examine how these system factors affect users' cognitive trust, emotional responses such as positive emotions and satisfaction. We surveyed users of mobile payment systems to achieve our research purposes. SPSS 23 and SmartPLS 2.0 were used for the analysis. The results showed that all system factors influenced cognitive trust and emotional response. However, positive emotions did not affect satisfaction. However, when we examine the relationship between emotional responses, positive emotions do not affect satisfaction.

• Journal of Powder Materials
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• v.24 no.6
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• pp.457-463
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• 2017

Nanosized $Gd_2O_3:Eu^{3+}$ red phosphor is prepared using a template method from metal salt impregnated into a crystalline cellulose and is dispersed using a bead mill wet process. The driving force of the surface coating between $Gd_2O_3:Eu^{3+}$ and mica is induced by the Coulomb force. The red phosphor nanosol is effectively coated on mica flakes by the electrostatic interaction between positively charged $Gd_2O_3:Eu^{3+}$ and negatively charged mica above pH 6. To prepare $Gd_2O_3:Eu^{3+}$-coated mica ($Gd_2O_3:Eu/mica$), the coating conditions are optimized, including the stirring temperature, pH, calcination temperature, and coating amount (wt%) of $Gd_2O_3:Eu^{3+}$. In spite of the low luminescence of the $Gd_2O_3:Eu/mica$, the luminescent property is recovered after calcination above $600^{\circ}C$ and is enhanced by increasing the $Gd_2O_3:Eu^{3+}$ coating amount. The $Gd_2O_3:Eu/mica$ is characterized using X-ray diffraction, field emission scanning electron microscopy, zeta potential measurements, and fluorescence spectrometer analysis.

• Journal of the Korean association of regional geographers
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• v.13 no.3
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• pp.341-354
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• 2007

Since Goryo was established during the early tenth century, Koreans have believed that Goguryo, which ruled almost all of the Manchurian territory, was one of the Three Kingdoms of their ancestors. This Korean perspective conflicts with the Chinese perspective that Goguryo was a Chinese local government in Manchuria and the northen parts of Korean Peninsula. Modern Chinese people wish, by the measure of Manchurian Project, that the history of China includes the histories of all the ethnic groups in Manchurian territory. Although Chinese people attempt unreasonably to regard Goguryo as an old Chinese local government, it is not from the Korean nationalistic viewpoint but from the scientific historian viewpoint that this Chinese perspective should be criticised and corrected. We should remember that the nationalistic viewpoints in East Asia may hinder the establishment of mutual cooperation and security in the region.

• Journal of Korean Society of Rural Planning
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• v.21 no.1
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• pp.1-8
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• 2015

Population growth and increasing consumption of resources in the process of the industrial development has caused environmental pollution, climate change, and resource exhaustion. Therefore 'sustainable development' has become the important issue for the future. The sustainable development aims at effective resource use, less environmental impacts, and higher social security. Generally the rural area including agricultural fields and forest has various and plentiful natural resources which could make future development sustainable. To develop potential rural resources, the values for energy, environment and economy should be assessed considering the life-cycle of resources. The purposes of this study are to suggest the E3 (Energy, Environment, and Economy) assessment model for rural biomass considering life-cycle of resource and to apply the model to rice, the major agricultural product. As the results of this study, it turned out through E3 assessment that economic gain of rice cultivation is 578,374 won/10a, carbon absorption is $1,530kgCO_2/10a$, carbon emission is $926.65kgCO_2/10a$, and bio-energy potential of by-product is 394,028 kcal/10a. When E3 assessment was applied to by province, the results varied by regions because of the amount of input during cultivation. These results would be useful to realize the rural biomass and design regional resources plan in integrated E3 perspective.

• The Korean Journal of Quaternary Research
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• v.25 no.2
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• pp.1-15
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• 2011

The ODP (Ocean Drilling Program) has been greatly contributed to the progress of Earth Science through the strong international cooperation with its name changed from DSDP DSDP(Deep Sea Drilling Program), IPOD (International Phase of Ocean Drilling) to IODP (Integrated Ocean Drilling Program). The IODP program which was launched about ten years ago will continue to develop toward the 2nd phase of scientific targets through the tight international cooperation. Distinguished scientific results from the various expedition as well as new phase of IODP structure and its important role that enhance the new scientific fields are summarized in this study. In particular, Arctic Expedition and deep-biosphere and high resolution climatic study that was not performed in previous ODP stages, will be extensively conducted in coming new 2nd IODP stages. Likewise, through strong international cooperation, it is expected that IODP would play an important role in Earth Science developments.

• Journal of the Society of Disaster Information
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• v.7 no.3
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• pp.240-246
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• 2011

The professional ethics for the guard is defined as the professional ethics that the person working as a guard to have. The professional ethics education builds the certainty and confidence about professional ethics recognition as well as behavior for guards so that helps the successful performance of the job. Therefore, this study tried to consider previous researches, understand the current professional ethics education for the department related to the guard and the case studies of incidents due to lack of professional ethics education to suggest the measures of activating professional ethics education. First, it is to consider the specialty of the guard to build the guard-martial spirit. Second, the professional ethics education must be out of the central culture study but develop as a major subject. Third, the quality and professionalism of the responsible professor of the professional ethics subject shall be considered. Forth, the professional ethics education must be performed not only at school but also continuously through the various ethics programs of the work places as well as organizations.

• Health Policy and Management
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• v.30 no.2
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• pp.192-198
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• 2020

Background: Korea National Health Insurance Service (NHIS) is operated as a social insurance system in which people pay a portion of their monthly income as insurance premiums and receive benefits when they experience illness or injury. Since 2005, the national health insurance remained surplus accumulating cumulative reserves each year. However, as of 2018, NHIS revenue recorded 62.11 trillion won and spending of 62.29 trillion won. The deterioration of NHIS finances is expected to accelerate with the aging population, income growth, new medical technology development, and enhanced security policies. Methods: To examine the financial health and sustainability of NHIS, we estimated the future revenue and spending until 2030 using the data from Korea Health Insurance Review and Assessment Service statistical yearbook. 2004-2018 average percentage change in NHIS revenue and spending was calculated. We estimated the future NHIS financial status using two methods. In the first method, we calculated the revenue and spending of the future NHIS by applying the 2004-2018 average percentage change to the subsequent years consecutively. In the second method, we estimated the future NHIS financial status after adjusting for the predicted demographic changes such as the aging population and declining birth rate in South Korea. Results: The estimates from this study suggest that the NHIS's cumulative reserves will run out by 2024. Conclusion: In terms of spending on current health insurance, there should be a search for ways of more efficient spending and funding options.

• Journal of the Economic Geographical Society of Korea
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• v.15 no.2
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• pp.228-239
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• 2012

Guanxi could be regarded as communities based on blood, regionalism, school ties centering on individual person. It has been used as a means of personal interests security and acquisition. What is more, it has formed a mode of socio-economic order, which is an inter-obligation relations based on mutual benefits. In practice, it is necessary to understand and accept guanxi in China, as it is a key factor to understand consumer patterns, inter-firm relations and extra-firm relations between firm and government. In this context, the main aim of the reserach is to identify the impact of guanxi on the business activities of Korean foreign direct investment firms in China by investigating their networks based on guanxi.