• Journal of information and communication convergence engineering
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• 제10권1호
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• pp.61-65
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• 2012

Many public organizations have been adopting and operating various servers. These servers run on Windows, Unix, and Linux operating systems that generally use less than 10% of their capacity. For migrating a public organization to cloud computing, we must first virtualize the server environment. This article proposes a strategy for server virtualization that the National IT Industry Promotion Agency (NIPA) has done and describes the effects of a public organization migrating to cloud computing. The NIPA Computer Center planned an effective virtualization migration on various servers. This project of virtualization migration was conducted with the existing policy of separate x86 servers and Unix servers. There are three popular approaches to server virtualization: a virtual machine model, a paravirtual machine model, and virtualization at the operating system layer. We selected a VMware solution that uses the virtual machine model. We selected servers for virtualization in the following manner. Servers were chosen that had the highest rate of service usage and CPU usage and had been operating for five years or more. However, we excluded servers that require 80% or greater rates of CPU usage. After adopting the server virtualization technique, we consolidated 32 servers into 3 servers. Virtualization is a technology that can provide benefits in these areas: server consolidation and optimization, infrastructure cost reduction and improved operational flexibility, and implementation of a dual computing environment.

• 농촌계획
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• 제21권2호
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• pp.127-135
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• 2015

In recent years, meteorological disasters have frequently occurred in rural areas. As a result, there have been growing concerns over the protective measures needed. In order to avoid natural risks and damage, and to strengthen countermeasure to meteorological disasters, local governments needs to be prepared. Therefore, this paper seeks to prevent meteorological disasters through mapping of inundation vulnerability in agricultural land, Chungcheongnam-do. In doing so, this study were considered 5 variables (i.e. precipitation, region of altitude below 50m, region of slope gradient is below 10 degree, distance from river within less 50m) for creating vulnerability map. The precipitation was excluded in five variables. Since, the precipitation which include Daily maximum precipitation, 2-Daily maximum precipitation, summer precipitation was not any correlation among them. The results of analysing four variables, exclusive of precipitation, were showed that the agricultural lands where located in Dangjin, Buyeo, Hongseong and Asan were low correlation of inundation vulnerability by overlapping analysis. Moreover, The correlation analysis was showed low correlation between each factors and the annual average area of agricultural lands' inundation, whereas, the correlation analysis which was overlapping each factor showed high correlation. In conclusion, in order to create reliable vulnerability map in agricultural lands, Chungcheongnam-do, it must be considered to overlap analysis of the four main factors such region of altitude below 50m, region of slope gradient is below 10 degree, distance from river within less 50m. We suppose that this study's analysis can help to set the preparedness site of agricultural lands inundation.

• 한국태양에너지학회 논문집
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• 제36권4호
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• pp.21-29
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• 2016

Commercial wind farm design tools and the national wind map are used to determine the implementation potential of offshore wind power in Korea in this study. For this, the territorial waters of Korea were divided into nine analysis regions and a commercial CFD code was used to obtain wind resource maps at 100m A.S.L. which is the hub height of a 5MW wind turbine used in this study. With the wind resource obtained, factors including water depth, distance from substations, minimum and maximum capacity of a wind farm, distance between turbines and wind farms were considered to determine wind power potential. Also, the conservation areas, military zones, ports, fishing grounds, etc. were considered and excluded. As the result, a total capacity of 6,720 MW was found to be the implementation potential and this corresponds to $3.38MW/km^2$ in API. Also if the distance from the substation is not considered, the potential increased to be 10,040 MW. This offshore wind farm potential is considered enough to satisfy the target of wind farm capacities in the 7th national plan for electricity demand and supply.

• 한국환경생태학회지
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• 제28권4호
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• pp.393-403
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• 2014

본 연구는 2011년에 수행된 충청남도 보령시 도시생태현황지도(biotopemap)에서 도출된 정보를 활용하여 야생동물 조사지점을 선정하는 단계에서 활용하기 위한 목적으로 수행되었다. 연구에 활용된 정보는 야생동물 전문가의 지식과 경험으로부터 도출되었으며 6가지 환경변수(Outside distance from food vegetation, Outside distance from farm land, Outside distance from forest, Human density, Outside distance from road, Outside distance from water)로 구현되었다. 6개의 환경변수는 도면중첩방법으로 모형화 되었으며 모형은 출현정보와 비교한 결과 94.72%의 상관관계를 도출할 수 있었다. 출현이 많을 것으로 예측된 지역은 농촌지역 산림 계곡부 였으며 조사범위의 한계(면적, 일정, 예산)속에서 양질의 야생동물 조사결과를 도출하기 위해 활용될 수 있다. 하지만 산림내부가 제외되어있는 점, 모든종이 같은 서식지를 선호하지 않는 다는 점 등의 한계점을 갖고 있었으며 추후 이 부문에 대한 후속연구들이 필요하다.

• 한국병원경영학회지
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• 제18권3호
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• pp.1-26
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• 2013

To improve the competitiveness of the hospital provides high quality medical services in a hospital coordinator role is emphasized. This study on customer orientation of the role ambiguity in order to identify the impact of degree of customer orientation were analyzed for demographic differences. Dependent variable, customer orientation affects role ambiguity as independent variables, and regression analysis were set. And the control variables are set to support situational factors, customer orientation on the role ambiguity and hierarchical regression analysis was performed. Obtained through empirical results are as follows: First, according to the demographic characteristics of the hospital coordinator customer orientation, the difference between gender and medical subjects are not shown. Age, education, work experience, job title, and the hospital on the pattern of customer orientation has shown a difference. Second, according to the hospital coordinator role ambiguity about its impact on customer orientation analysis can be a role implementation, job implementation, opinion communication in achieving customer orientation was negatively affected. Third, role ambiguity, and customer orientation factors for the moderating effects of organizational support for the role of customer orientation can role implementation, job implementation, opinion communication was a statistically significant. Fourth, the role ambiguity factors and customer orientation for the administrative support for the moderating effect of customer orientation and role implementation is significant, but job implementation, opinion communication were statistically significant. Fifth, the role ambiguity factors and customer support for customer orientation and customer orientation for the moderating effects of role performance and the opinion communication was not statistically significant. However, job implementation was statistically significant. The limitations of this study are as follows: First, role ambiguity, situational factors and support due to limitations of the variable factors that may affect the customer orientation of a number of factors were excluded. So many exogenous variables in the measurement process can affect. Second, the variables measured as problems of self-assessment by the variable measuring the respondent's bias may occur. Third, This study is difficult to generalize. In other words, several areas of the province conducted by the empirical results of the survey as a limit on the overall generalization can follow.

• 한국의상디자인학회지
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• 제22권2호
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• pp.45-59
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• 2020

The purpose of this study was to clarify that the effect of consumer's perception of nail store attributes has on intent to revisit (focus on independent stores) by performing quantitative research. The importance of nail stores is increasing with sales amounts and the number of workers, however, previous research in this area is not complete. The reason that this qualitative research should be done before the quantitative research is due to the scant theoretical background in this matter. As the nail market is steadily increasing, determining the factors to make a successful and influential store leading to revisits is very meaningful both academically and in business. For the quantitative study, consumers from 20 years old to less 60 years old who had purchased nail service at independent nail stores were included in the survey. Quota sampling was adopted in the areas where the independent nail stores were located from May 10th to May 30th, 2019, and 262 questionnaires were collected, and those containing insincere respondences were excluded. The most important nail store attribute was reliability (store name value, relationship with workers and A/S) and then the physical environment, economics, product, and promptness. The result depended on demographic factors- younger and lower-income respondents put a premium on the physical environment, promptness, and economics, on the other hand, older and higher-income respondents placed a priority on reliability. The correlation analysis result is that all store attributes (reliability, physical environment, economics, promptness, product) show a statistical significance. A multiple regression analysis was conducted to determine the effects of nail store attribute importance on revisit intention. Promptness, economics, and the physical environment have a statistically significant effect on the consumer's revisit intention.

• 가정과삶의질연구
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• 제25권3호
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• pp.1-23
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• 2007

This study provides basic materials that assist in marital counselling and marital therapy intervention through its analysis of the effects of marital communication and marital intimacy on psychological well-being and its systematic focus on middle-aged married men and women of social interest and importance. The subjects of this study were married men and women, aged 40 to 59, living in the metropolitan areas of Seoul and Kyeonggi; the study excluded those who were divorced, bereaved or whose last child was in over high school, but included those who were separated or in a second marriage. A total of 396 people, 134 men and 262 women, were included in the study. The major findings of this study are as follows. First, middle-aged married men recorded higher levels of marital communication and marital intimacy than middle-aged married women. While women showed higher levels of depression than men, there was no difference between men and women in terms of overall life satisfaction. Second, there were differences in marital communication, marital intimacy, and psychological well-being among middle-aged married men and women according to background variables. Third, marital communication and marital intimacy were shown to affect the life satisfaction of both middle-aged married men and women. Of the two, marital communication had more the influence. Marital communication also had the biggest influence on levels of depression among both middle-aged married men and women.

• 융합보안논문지
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• 제19권5호
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• pp.19-24
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• 2019

MANET은 이동 노드로만 구성되어 있기 때문에 기존의 유선 환경에서의 라우팅 프로토콜을 그대로 적용할 수 없다. 따라서 이러한 특성이 고려된 라우팅 프로토콜이 필요하다. 특히 라우팅 단계에서 악의적인 노드들을 배제하지 못한다면 네트워크 성능은 크게 떨어질 수 밖에 없다. 본 논문에서는 라우팅 성능을 향상시키기 위해 영역기반 침입탐지 기법을 제안하였다. 제안한 기법에서는 전체 네트워크를 일정한 영역으로 분할한 후 영역관리 노드를 이용하여 영역내 공격 탐지가 이루어지도록 하였으며, 멤버 노드로부터 수신한 완료 메시지를 이용하여 서로간 협업을 통해 경로상에 존재하는 공격 노드를 탐지할 수 있는 방법을 제안하였다. 그리고 탐지한 공격노드 정보를 블록체인에 저장하여 공유함으로써 네트워크에 참여하는 모든 노드들이 공격노드 정보를 공유할 수 있도록 하는 방법을 적용하였다. 제안한 기법의 성능 평가는 기존의 보안 라우팅 기법들과 비교 실험하였으며, 실험을 통해 제안한 기법의 우수한 성능을 확인할 수 있었다.

• Asian Pacific Journal of Cancer Prevention
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• 제15권17호
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• pp.7187-7193
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• 2014

Background: The aim of this meta-analysis was to compare sensitivities and specificities of fine needle aspiration (FNA) and core needle biopsy (CNB) in the diagnosis of thyroid cancer. Materials and Methods: Articles were screened in Medline, the Cochrane Library, EMBASE and Google Scholar, and subsequently included and excluded based on the patient/problem-intervention-comparison-outcome (PICO) principle. Primary outcome was defined in terms of diagnostic values (sensitivity and specificity) of FNA and CNB for thyroid cancer. Secondary outcome was defined as the accuracy of diagnosis. Compiled FNA and CNB results from the final studies selected as appropriate for meta-analysis were compared with cases for which final pathology diagnoses were available. Statistical analyses were performed for FNA and CNB for all of the selected studies together, and for individual studies using the leave-one-out approach. Results: Article selection and screening yielded five studies for meta-analysis, two of which were prospective and the other three retrospective, for a total of 1,264 patients. Pooled diagnostic sensitivities of FNA and CNB methods were 0.68 and 0.83, respectively, with specificities of 0.93 and 0.94. The areas under the summary ROC curves were 0.905 (${\pm}0.030$) for FNA and 0.745 (${\pm}0.095$) for CNB, with no significant difference between the two. No one study had greater influence than any other on the pooled estimates for diagnostic sensitivity and specificity. Conclusions: FNA and CNB do not differ significantly in sensitivity and specificity for diagnosis of thyroid cancer.

• Journal of Acupuncture Research
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• 제32권3호
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• pp.147-161
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• 2015

Objectives : The purpose of this study was to review the effectiveness of acupuncture and moxibustion therapy for the treatment of acute herpes zoster. Methods : Data was collected by two researchers. Clinical trials on PubMed were retrieved using MeSH terms including "herpes zoster" combined with "acupuncture therapy", "moxibustion", "bloodletting", "electroacupuncture", and related keywords. We excluded irrelevant studies and included randomized and non-randomized controlled trials, case series and case reports. Finally, we selected a total of thirteen studies and conducted a literature analysis and an object quality assessment. Results : Twelve of thirteen studies were about acupuncture and moxibustion combined therapy. Only one study suggested that a single acupuncture therapy is expected to be equally as effective as a common western medicine therapy. There was some evidence related to the effectiveness of moxibustion, venesection and electroacupuncture, but it dealt with combining therapy and was insufficient, and with an inclusion of potential risk factors. Only one study was conducted under approval from an institutional review board. No severe treatment-related adverse events were observed. A quality assessment suggested that there was some weakness in the areas of blinding and concealment. Conclusions : There is some evidence that suggests the effectiveness and safety of acupuncture and moxibustion combined therapy as a treatment for acute herpes zoster.