• Korean Journal of Construction Engineering and Management
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• v.14 no.2
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• pp.87-95
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• 2013

The number of construction management firms has been increased as construction management delivery system has been active in Korean construction market. the capability of leading construction management professional, who is responsible for managing project administration, is important for commissioning construction management contracts. The quality of project proposal and the capability of leading construction management professional, which are assessed by the board of contract awarding committee, are the major contributors for commissioning the public construction management projects administered by the Korean public procurement service for contracting. Therefore, employing a very competent leading construction management professional is the critical strategy for awarding contract to the construction management firms' part. That is why the firms should secure a fixed number of leading construction management professional in a waiting list to proceed the contract commissioning process for expectant candidate projects, even if there is no project assignable to the leading construction management professionals. However, a measure that makes effectively use of the leading construction management professional in a waiting list has not been systematically implemented in the firms. In turn, the firm suffers considerable loss in a project personnel supply and demand plan. Expert opinions were obtained by the survey questionaries administered to top management of the construction management firms which are engaged in the construction management contracts for commissioning the public construction management projects administered by the Korean public procurement service either as principal or co-principal deliverer. This paper presents the findings obtained by investigating the actual employment state of the leading construction management professional in the waiting list and by analyzing the issues involved in mobilizing and demobilizing them. It contributes to implement a practical guide for searching effective solutions to the issues.

• Korean Journal of Construction Engineering and Management
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• v.19 no.1
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• pp.65-73
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• 2018

Since unfair trading practices between participants in construction project are common, the government has enforced several policies and systems to prevent or minimize the unfair trading practices in construction industry. However, not much attention has been paid to figure out which policies or acts are working or not. This paper analyzed the effectiveness of the policies and acts which are being implemented to prevent unfair trading practices and provided several suggestions to improve the performance of those acts. Survey was conducted to industry experts to collect data regarding their perceptions on those policies and acts. Then the effectiveness of the policies and acts were analyzed in terms of their importance and performance through IPA (Importance-Performance Analysis) based on the survey result. It was found through IPA that execution related acts such as investigation, exposure, and punishment for unfair trading practice have shown low effectiveness in entire construction process and dispute arbitration and mediation related center operated by authority showed low performance too. To improve the effectiveness of those acts, dispute arbitration system improvement, investigation & reporting system consolidation and enhancement practical binding force of punishment and penalty were suggested. Most of all, rules and culture for fair trading should become more established in construction industry by preventing conflict among participants through active communication.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.31 no.2D
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• pp.193-201
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• 2011

The provision of traffic information plays an important role in increasing social benefit not only by saving travel time for individuals but also by improving the efficiency of road operation. VMS(Variable Message Sign) helps on-wheel drivers easily understand the road situation, and also provides real-time traffic information to people on the streets. However, it has not been sufficiently studied on how traffic information based on VMS influences on the drivers' selection of route. This study investigated how drivers use VMS traffic information and how they are satisfied with it. Then, the model of drivers' route selection was specified with the types of traffic information and the expected travel time to examine the influence on the selection of drivers' route. The model was estimated and analyzed in three types according to the condition of detour roads, and the rate of route change and the degree of sensitivity was calculated from the estimation. The results of analysis are as follows. the $1^{st}$ type model showed the 10% of route change for the travel time saving of 5minutes, and the 81.6% of route change for the travel time saving of 20minutes. The $2^{nd}$ type led to the range of route change from 14.2% to 92.7% over the 5 through 20 minutes of travel time saving. The $3^{rd}$ model resulted in the 99.1% of route change. The sensitivity of route change showed the highest for the travel time saving of 11 minutes with the $1^{st}$ type model, 9 minutes with the $2^{nd}$ type model, and 5 minutes with the $3^{rd}$ type model respectively.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.31 no.2D
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• pp.323-334
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• 2011

In this study, we performed the residual geoid modeling using the FFT and LSC methods in context of application of R-R (Remove and Restore) technique as a general technique for gravimetric geoid model in order to propose the effective way of geoid determination in Korea. For this, a number of data compiled for residual geoid modeling by the multi-band spherical FFT method with Stoke's formula and LSC method as known as statistical method. The geometric geoidal heights obtained from 503 GPS/Levelling data were used for inducing the various elements and proper computation process which should be considered for improving the accuracy of residual geoid modeling. Finally, we statistically compared the results of residual geoid heights between FFT and LSC methods and reviewed then the proper way of residual geoid modeling to the region of Korea. As the results of comparison, LSC method is not suitable for residual geoid modeling in Korea due to the noise and lack of gravity observations and the effects of local characteristics, while FFT method by applying Stokes' integral with proper cap size and modified kernel which provides the better accuracy of residual geoid heights up to 10 cm more than those of LSC method.

• Proceedings of the KSCN Conference
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• 2003.11a
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• pp.1086-1087
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• 2003

오늘날 급변하는 사회경제적 환경 때문에 현대인의 영양과 건강에 대한 관심은 날이 갈수록 높아지고 있어 대중매체에서도 영양과 건강에 대한 정보를 전달하는 경우가 많아지고 있다. 특히 방송매체 중 공중파 TV 프로그램에서의 정보들은 쉽게 접할 수 있어 올바른 영양 및 건강생활을 위한 정보나 실천지침을 국민들에게 전달되는 통로서의 긍정적인 부분도 있으나 시간상 제작환경상 등의 제약으로 인해 왜곡된 정보를 전달하는 부정적인 부분도 있다. 이에 건강관련 식품영양정보 모니터링을 통해 객관적인 평가와 문제점을 파악한 후 유형별로 분류, 분석하여 개선방안을 마련하기 위해서 본 연구에서는 방송매체중 공중파 TV프로그램 중 정확한 보도와 정보전달을 목적으로 하는 프로그램과 드라마 중 가족드라마를 선정하여 건강관련 식품영양정보의 양적 질적 현황을 파악하고자 하였다. 건강관련 식품영양 정보들에 대한 건수, 시간수, 주제, 취재원, 적절성과 부적절성 평가 및 부적절성의 요인들을 양적 질적으로 평가하여 연도별 비교분석을 하였다. 2002년도 4월 30일부터 2003년 9월 30일까지 모니터링 전문 교육을 마친 식품영양학 전공 모니터원이 조사기간 중 담당 프로그램을 모니터하여 각 프로그램에 나타난 식품영양정보의 양과 질을 조사하여 SPSS 통계팩키지를 사용하여 빈도 및 평균분석을 하였다. 총 모니터건수는 15,226건이었으며, 이중 총 건강관련정보건수는 5,623건으로 36.9%를, 식품영양관련 정보는 4,848건으로 31.8%를 차지하는 것으로 분석되었다. 총 건강관련 정보 대비 식품영양정보건수의 비율은 86.2%로 높게 나타났다. 뉴스프로그램의 총 건강관련 정보수는 17.9%에서 16.1%, 식품영양정보수의 비율은 6.6%에서 3.6%로 낮아졌으며, 건강정보프로그램의 총 건강관련 정보수는 51.5% 에서 94.6%, 식품영양정보수의 비율은 32.4%에서 57.4%로 높게 나타났다. 드라마의 식생활관련 장면 방송시간비율은 20.8%에서 17.2%로 낮게 나타났다. 뉴스프로그램에서 건강관련정보가 가장 많이 보도되는 달은 2002년 10월, 2003년 9월로 나타났다. 건강관련 정보의 주제로는 뉴스프로그램은 질환, 건강정보프로그램은 음식, 어린이교육프로그램은 식품, 노인정보프로그램은 생활습관이 가장 높게 나타났다. 정보의 취재원으로는 전문가와 일반인의 인터뷰가 73.7%로 가장 많았다. 식품영양정보의 부적절한 평가율은 뉴스는 49.3%에서 72.2%로, 건강정보프로그램은 54.0%에서 67.8%로 2002년보다 2003년도에 높게 나타났으나, 드라마는 63.2%에서 16.2%로 낮게 나타났으며, 어린이교육프로그램 40.0%, 노인정보프로그램 17.9%인 것으로 나타났다. 드라마의 식생활 장면에서 음식의 양이 부적절한 경우는 28.6%에서 15.8%로 낮아졌으나, 음주장면의 경우 10.7%에서 11.5%로 증가하였음은 앞으로 개선이 필요하다고 생각된다. 흡연 장면의 경우 드라마상의 흡연장면 방송금지 선언의 여파로 1.6%에서 0.2%로 감소하였다. 뉴스 및 정보프로그램에서는 부적절한 평가를 받은 정보들은 적정섭취량이나 실생활에 활용할 실천방안 등에 대한 제시가 없는 경우가 가장 많았으며, 전문용어에 대한 설명부족, 영양가 비교기준이 다르거나, 식품 등의 효과에 대한 내용이 과장된 경우가 많았다. 드라마의 경우 음주, 커피, 야식 등 불필요한 식사장면이 많이 나오거나 음식의 양이 사람수에 비해 많다라는 평가가 가장 높게 나타났다. 연구 결과 TV 프로그램에서 다루는 건강관련 정보기사가 차지하는 비율과 이중 식품영양정보기사가 차지하는 비율이 높아지고 있으나 건강관련정보기사의 질적인 평가에서는 부적절한 평가를 받은 비율도 함께 높아지고 있어 이의 개선이 시급히 요구된다.

• The korean journal of orthodontics
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• v.38 no.4
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• pp.283-298
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• 2008

Objective: The purpose of this study was to investigate changes in the mandibular dental arch from presurgical orthodontic treatment and orthognathic surgery, and to evaluate the relationships between the pretreatment records and changes of mandibular dental arch in skeletal Class III malocclusion individuals. Methods: Lateral cephalometric radiographs and mandibular study models of 31 adults with skeletal class III malocclusion were taken and measured. All measurements were evaluated statistically by ANOVA, Scheffe's Post Hoc, and paired t-test, and correlation coefficients were evaluated. Results: No significant difference in Mn-LMMC, Mn-LIE, Mn-MnOcc was detected between pretreatment and presurgical groups. Statistically significant but low correlations were demonstrated between the initial arch length discrepancy (ALD) and change in ICW, IPW1 (r = 0.492, 0.615) and change in arch length (r = 0.641). No association was seen between the initial depth of curve of Spee and change in mandibular incisor angle and arch width or arch length. Regression analysis showed that the amount of change for arch length and IPW1 could be explained by 64.0% and 75.8% of the pretreatment variables respectively. Conclusions: This study suggests that orthognathic surgery results can be predictable by measuring the pretreatment records.

• Korean Journal of Environment and Ecology
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• v.24 no.6
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• pp.763-771
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• 2010

The rapid increase of wildlife passage installation since the late 2000s was aimed to reduce roadkill caused by habitat fragmentation and losses related to road construction, but wildlife-vehicle collisions are now still occurred even near the wildlife passage area. This is the reason that the effectiveness of wildlife passage have not been evaluated in combination with absence of monitoring data and management strategy of the wildlife passage. The AHP method are used, in this study, to identify the evaluation factors affecting the effectiveness of the present 367 wildlife passages in a mitigation measures to reduce road effects on wildlife species. Ten evaluation factors are derived from third levels in the AHP analysis. Priority setting to identify appropriate management strategies in first level is selected among four second levels on facility, environment, wildlife species and management tool. The AHP analysis suggested that neighboring environments are the most important factor at the second level, and passage structure, harmony with natural surroundings, wildlife occurrence and monitoring of the passage are also important factors at the third levels. In summary, effective measurements of wildlife passage management is based on managing the passage with neighboring topography and natural surrounding. This is useful to establish wildlife passage management strategy in order to reduce the negative effects of roads on wildlife species.

• Journal of agricultural medicine and community health
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• v.38 no.2
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• pp.71-84
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• 2013

Objectives: As suicide among the elderly population has been a critical issue in Korea, this study aimed to evaluate correlations of suicidal ideation with protective and risk factors among elderly who reside in a rural community. Methods: A total of 157 elders from Gyeongju city, who had attended senior centers in, were enrolled to answer questionnaires including the Geriatric Depression Scale Short Form-Korea and the Scale for Suicidal Ideation. Data were analyzed using SPSS 18.0K for Windows, and included t-test, Pearson correlation, and a three-step hierarchical multiple regression analyses. Results: Using the hierarchical regression analyses for predicting the elderly's suicidal ideation, male gender and social group variables were entered as predictors in the first step(adjusted $R^2$=0.107, P<0.05). Pain, ADLs, family support variables were not entered in the second step. Depression variable was the only predictor in the third step(adjusted $R^2$=0.384, P<0.001). Conclusions: Although this study confirmed the impact of depression on the suicidal ideation, elderly with risk factors including male gender and social isolation should receive a special attention from community health care professionals.

• Journal of the Korean Association of Geographic Information Studies
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• v.15 no.3
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• pp.148-157
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• 2012

Recently, people are getting more interested in green energy resource and environment friendly energy resource due to the lack of energy and global warming. This study produced a solar energy resource map using LiDAR(Light Detection And Ranging) data to check if it is utilized for spatial information technology and solar energy sectors that people pay more attentions to as new recycling energy. This study assigned Ulleungdo(Island) located in Gyeongsangbuk-do as a target area. This study created the contour line with 1 meter by newly photographing LiDAR and data processing. And using this contour line, this study built DEM(Digital Elevation Model) data with 1 meter. The incidence range depending on the altitude and azimuth of sun using DEM data is used to evaluate solar energy resource. This is expected to suggest an accurate method to evaluate more reliable and more precise information of new recycling energy resource by producing solar energy resource map based on accurate and precise spatial resolution data with 1 meter level.

• Journal of Science and Technology Studies
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• v.2 no.2 s.4
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• pp.25-54
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• 2002

Without much communication, large-scale surveys of public knowledge of, and attitudes to, science (quantitative PUS) and case-study analyses of the public's understandings of science in particular (constructivist PUS) have dominated in the public understanding of science (PUS) area. Not only methodological preference but also a strong antipathy against value-orientations that each approach presumed to have and support has been barriers for quantitative PUS and constructivist PUS to benefit each other. In order to overcome such barriers, this paper demonstrates that value orientations guiding quantitative PUS have been much more diverse than what constructivist PUS researchers might think, and that quantitative PUS has indeed yielded the results consistent with and complementary to constructivist PUS. Finally this paper proposes that (1)quantitative PUS should test propositions provided by constructivist PUS, so that it can contribute much to the construction of more generalizable PUS theories and policies, and (2)constructivist PUS uses the outcome of quantitative PUS to develop more complex case studies which consider heterogeneous publics, trends of public evaluations of science, and how public attitudes to science in the abstract and public attitudes to science in particular in a specific context have effect on each other.