Safety accidents, which are called industrial accidents in construction work, are often caused by unstable physical and personal conditions combined during preparation and execution of work. It is difficult to manage all the construction works, but especially in the field of apartment construction work, complex and many kinds of works are being carried out at the same time. In the current construction, safety regulations such as safety management guidelines are generally well maintained, but the execution of manpower resources that can fulfill them is limited, and it is difficult to reduce the accident rate and loss cost. Therefore, in this study, it is a reality that most of the types of construction work are under contruction by subcontracting contract, so they are limit by methods of manual maintenance and safety education. Currently, the subcontractor is also allowed to perform safety management through the composition of the safety management review body, but it is operated formally. So alternatives to this were studied. As a result, safety accidents occur in the subcontractor's workplace due to vertical integration, which is a characteristic of the construction industry. Therefore, the safety management should be carried out by the subcontractor as well as the subcontractor It is concluded that effective and practical safety management can be achieved when management based on the personality that can communicate with each other through the management team is able to reduce the accident rate and loss cost.

The systematic management of technology infrastructure increasingly becomes critical as it represents the driving power for creating competitive advantage of nations and enterprises. In this sense, public facility and equipment, which is one major asset of technology infrastructure, should be managed effectively, systematically and efficiently to increase its overall equipment effectiveness. However, the manual and off-line communication was the unique way to communicate between the suppliers who provide facilities in the public sector and the customers who utilize the facilities in the industrial sector. This communication way caused invisibility of available usage time and increase of idle time, thereby decreasing the equipment effectiveness. This paper presents an web-based scheduling system that enables real-time collaboration and information sharing for increasing the equipment effectiveness. The designed system performs scheduling, facility management, order management and customer relationship management in an on-line platform, and carries out the processing and storing of relevant information in an integrated database. The paper includes a development approach to identify business process models and standardized system models by using object-modeling technique. The deliverable of the present work will contribute to increasing the equipment effectiveness by enhancing visibility, transparency and predictability by means of the integration with a legacy Enterprise Resource Planning.

In construction work, safety accidents often occur in combination with unstable physical and human conditions during preparation and execution of work. In Korea, the accident rate is higher to that of any country in the world. Therefore, it is necessary to take measures by fundamental prescription. In this paper, in the case of construction safety management, we tried to find a reasonable alternative through a questionnaire survey to apply to subcontracting and small-scale construction. In conclusion, workers who are well aware of the task could be able to reduce the accident rate by deploying them as safety management officers after receiving the training.

PURPOSES: The goal of this study is to analyze the operational efficiencies of special roundabouts using simulated programs. METHODS: This study primarily focuses on comparing the delays and traffic flow disturbances occurring at special roundabouts. In this study, the operational efficiencies of 450 scenarios (5 roundabout types × traffic volumes × directional ratios × measures) are analyzed according to the corresponding delays and traffic flow disturbances using VISSIM and SSAM. RESULTS : The main results are as follows: 1) the Hamburger roundabouts are determined to yield the least common-type delays, 2) the amount of delays at Turbo and Flower roundabouts with respect to relatively increased right-turn-type delays, in addition to the amount of delays at the Left-turn slip-lane roundabout with respect to relatively increased left-turn-type delays, are found to be reduced as compared to the common-type delays. Lastly, common- and increased right-turn-type traffic flow disturbances at the Turbo roundabout and increased left-turntype traffic flow disturbances at the Left-turn slip-lane roundabout are determined to be the most infrequent. CONCLUSIONS: This study comparatively analyzes five roundabout types: standard, Flower, Turbo, Hamburger, and Left-turn slip-lane. The effectiveness of roundabouts can increase according to given traffic volume, directional ratio, and measure of effectiveness.

The external R&D, which includes the adoption of the external technology and knowledge in addition to the internal R&D, is one of important factors for the innovation. Especially for small and medium-sized enterprises (SMEs), the external R&D has been considered as a key factor to carry out the innovation more efficiently due to the limitations of their resources and capacities. However, most of extant studies related to external R&D have focused on analyzing the influence of external R&D on innovation outputs or outcomes. Only a few studies have explored the impact of external R&D on the innovation efficiency. This study therefore investigates whether the external R&D effects the industry’s innovation efficiency and productivity. On this study, we used Korean manufacturing industry data of SMEs from 2012 to 2014 and employed a global Malmquist productivity analysis technique, which is based on the Data Envelopment Analysis (DEA), to assess the innovation efficiency and productivity. Innovation performances of external R&D group and internal R&D group are compared. Then, the sectoral patterns of both innovation efficiency and productivity are analyzed with respect to the technological intensity, which is introduced by OECD. The results show that the gap of innovation efficiency between external and internal R&D groups has gradually decreased because of the continuous improvement of the external R&D group’s performance, while the external R&D group lag behind the internal R&D group. In addition, patterns of the innovation efficiency and productivity change were different depending on the technological intensity, which means that the higher the technological intensity, the greater the effect of external R&D.

본 사례는 공작기계산업의 A사에서 수행한 R&D 개발완료 과제 79건을 대상으로 R&D 효율성을 DEA를 활용하여 분석하고, 그 개선방안을 제시한 것이다. DEA 분석에서투입변수는 R&D 투자비와 연구인력 맨먼스, 산출변수는 개발기간 목표달성률과 예상매출액(5년간)으로 설정하였으며, 표본은 제품, 선행기술, 제어기술로 구분하여 분석하였다. 여기서선행기술은 제품성능을 위한 요소기술과 응용프로그램을 개발하는 것이고 제어기술은 컴퓨터를 토대로 수치제어 프로그램을 설계하는 것이다. 분석결과에 따르면 제품, 제어기술, 선행기술 순으로 효율적으로 운영되고 있어 선행기술의 효율성이 가장 낮았다. 그 이유는 선행기술의 불학실성에 기인한다. 선행기술은 개발목표를 정하기 어렵고 개발계획도 수립하기 어렵다. 심지어 운영하는 과정에도 환경변화가 영향을 미친다. 투자효율성 분석결과에서 CRS는 제품 34.6%, 선행기술 14.3%, 제어기술 38.9%이다. IRS는 제품 53.8%, 선행기술 85.7%, 제어기술 38.9%이다. DRS는 제품 11.5%, 선행기술0%, 제어기술 22.2%이다. 전체적으로 본 사례는 과다투입보다는 과소투입이 문제가 되고 있다. 이는 R&D 투자 부족을 의미한다. 주목할 부분은 기업의 미래 경쟁력이 될 수 있는 응용기술에 대한 과소투입이 심각하다는 것이다. 비효율적 DMU의 효율적 운영을 위해서는 최적의 투입량을 관리해야하며, 이것은 준거집단과의 비교를 통해 구할 수 있다.

The external R&D, which includes the adoption of the external technology and knowledge in addition to the internal R&D, is one of important factors for the innovation. Especially for small and medium-sized enterprises(SMEs), the external R&D has been considered as a key factor to carry out the innovation more efficiently due to the limitations of their resources. However, most studies related to external R&D have focused on innovation outputs or outcomes. Only a few studies have explored the impact of external R&D on the innovation efficiency. This study therefore investigates whether the external R&D effects the industry’s innovation efficiency and productivity. On this study, we used Korean manufacturing industry data of SMEs from 2012 to 2014 and employed a global Malmquist productivity analysis technique, which is based on the Data Envelopment Analysis(DEA), to assess the innovation efficiency and productivity. Then, the sectoral patterns of both innovation efficiency and productivity are analyzed with respect to the technological intensity, which is introduced by OECD. We show that the gap of innovation efficiency between external and internal R&D groups has gradually decreased because of the continuous improvement of the external R&D group’s performance, while the external R&D group lag behind the internal R&D. In addition, patterns of the innovation efficiency and productivity change were different depending on the technological intensity, which means that the higher the technological intensity, the greater the effect of external R&D.

Safety accident in Building construction work in the process of preparation and implementation of the insecure human, material status is often caused by combining the reality is that many things. Accident rate is a similar level in the case of Korea and foreign countries than any country in the measures by the higher fundamental prescription is needed. In this paper, construction safety management of subcontracting work and small construction plan to apply through a survey to reach a sensible alternative. I did In conclusion, the educated workers know well, and so on the work schedule then quickly if safety management personnel in disaster will be able to reduce the rate to a miracle appeared.

소의 수정란 생산과 이식에 대한 연구는 한우의 개량과 증식 그리고 한우 유전자원의 안정적인 관리로 산업적 활용성을 증대 시킬 수 있다. 따라서 본 연구에서는 한우의 생체 에서 난포란을 채란에 따른 효율성을 높이기 위해서 연구를 수행하였다. 생체난포란 채란 을 위한 한우 공란우는 한우연구소에서 사육중인 한우에서 실시하였다. 생체 내 난포란의 관찰은 MyLabTM30VETGOLD(Esaote, Genova, ITALY) 및 탐촉자(EC123; Micro-Convex 9∼3 MHz, Esaote, Genova, ITALY)는 6.6 MHz convex scanner를 사용하였고, 난포란 채란에 사용된 주사침은 19G 주사침을 사용하였다. Monitor Image에 고정된 2 mm 이상 의 난포에서 난포의 수량을 확인하고 난포란을 흡인하였다. 흡입된 난포란은 2∼3회 washing으로 혈액 등의 이물질을 제거하여 실체현미경 하에서 회수하였고, 난포란의 등 급분류는 세포질 균일도와 난구세포의 부착 정도에 따라 평가기준을 1등급에서 3등급까 지 분류하였다. 회수된 난포란의 체외성숙배양은 TCM 199 기본배양액에 소 태아혈청(Fetal Bovine Serum) 0.5%와 LH, FSH, FGF, EGF 첨가하여 22시간 동안 배양하였고, 체외수정은 IVF 100(IFP, Japan) 배양액 50μl 미소적에 성숙 난포란 20개씩 넣어서 체외수정을 실시 하였다. 체외수정을 위해서 KPN 동결정액을 사용하였고 수정을 위한 정자의 최종 농도 는 2x106/ml로 6시간 동안 체외수정을 유도하였다. 체외배양은 조건은 5% O2, 5% CO2, 그리고 90% N2 와 38.5°C 인큐베이터에서 배양하였다. 수정율은 체외수정 후 48시간째 확인하였고 배반포 수정란 발달율은 체외수정 후 192시간째 확인하였다. 농후사료 급여량 에 따른 난포란의 회수효율은 2.0kg/일 급여시 초음파상에서 채취가능 난포란은 9.6개, 3.0kg일 때는 8.8개로서 유의적인 차이는 없었으나, 2.0kg 급여시에 다소 높은 난포란을 확인하였다. 생체 채취된 난포란의 체외배양에 따른 수정란의 발달율은 IVD 배양액에서 15.6%, CR1aa 26.2%, SOF 37.1% 발달율로서 IVD 배양액보다 SOF 배양액에서 유의적 으로(P<0.05) 높은 발달율을 보였다. 배양액 종류에 따른 동결 융해후의 생존율은 66.7%, 64.7%, 70% 각각 나타내었다. 생체난포란을 활용한 수정란이식을 위해서 체외배양시스템 의 안정적인 시스템 구축이 필요하며 생체채취 난포란의 회수를 위한 시술자의 기술적인 숙련도가 상승되었을 때 효율성을 제고할 수 있을 것으로 시료된다.

With the interest on operational efficiency due to the rapid growth of food material distribution industry and food service industry, the study adopts DEA (Data Envelopment Analysis) model and examines to measure the technological, pure technical and scale efficiency those companies engaging in the food material distribution and food service business. As a result of analysis, the companies operating integrated business have relatively higher efficiency than those operating only food material distribution or food service companies while the result indicates that three efficiencies don’t have significant difference depending on whether affiliated companies or not. In the results from the measuring by DEA.

Recently, nanotechnology has grown as one of the leading science technology along with other converging technologies such as biology, information, medicine etc., bringing the continuous investment of the government in nano-related field. However, it is difficult to measure and evaluate the performance of the national research and development programs because of the multidimensional character of the expected outcomes. This study aims to measuring efficiency of the national nanotechnology research and development programs using DEA model. The decision making units are nine nano-related ministries including the Ministry of Science, ICT and Future Planning. The input variables are total expenditure, number of the programs and average expenditure per program. The output variables are science, technology and economic indicator, and the combination of these outputs are respectively measured as seven different DEA cases. The Ministry of Science, ICT and Future was the first efficient ministry in total technical efficiency. Ministry of Agriculture, Food and Rural Affairs and the Ministry of Food and Drug Safety were efficient in pure technical efficiency, when the Ministry of Commerce Industry and Energy took the first in the scale efficiency. The program efficiency was affected by organizational characteristics such as the institution’s scale, the concentration of the research paper or the patent, technology transfer or the commercialization. The result of this study could be utilized in development of the policy in the nanotechnology and the related field. Furthermore, it could be applied for the modification of expenditure management or the adjustment of the research and development programs’ input and output scale for each ministry.

This study applied the Stochastic Frontier Analysis to estimate which independent variable affects to efficiency of aquaculture household. This study used wage and facility scale as input variables, sales volume as an output variable to estimate efficiency. Also, the study used region, species, water quality to estimate technical inefficiency factors of the model. The data used for this study were obtained by the operating costs survey using 1:1 interview method. The study selected translog production model with technical inefficiency term estimated as half-normal distribution. In addition, the study used pearson and spearman correlation coefficient among efficiency estimating models. Also, the study analysed differences among estimated efficiencies through t-test, and showed us 0.1793 in species, 0.4677 between Geojae and Masan.

이 논문은 비모수적 자료포락분석 기법을 이용하여 감귤농가의 경영효율성을 추정하였다. 추가적으로 커널밀도함수를 이용하여 경영효율성의 분포가 지난 13년간 어떻게 바뀌었는지도 도식화하였다. 연구를 위해 농촌진흥청에서 조사 발표하는 자료를 사용하였다. 분석결과를 보면, 지난 13년간 경영효율성은 시설 감귤농가와 노지 감귤농가 모두에서 상승하는 것으로 나타났다. 이것은 수입농산물이 증가하는 상 황 하에서 감귤농가의 경영효율성이 개선되고 있음을 의미한다. 경영효율성을 순수기술적 효율성과 규 모 효율성으로 분해한 결과, 순수기술적 효율성은 점차 개선되는 반면에 규모 효율성은 악화되는 것으 로 분석되었다. 하지만 여전히 효율성 개선의 여지는 순수기술적 효율성 측면에 있는 것으로 분석되었 다. 순수기술적 효율성은 꾸준히 계속 향상시키되 적정규모를 찾아가는 노력도 병행해야 할 것으로 보 인다.

The purpose of this study is to investigate production efficiency of Oceans and Fisheries Human Resources Development Programs Efficiency using Bootstrap-DEA. The study extracts 33 officials curriculum, 11 fisheries managers curriculum for its analytical. First, the study estimates technical, pure technical, and scale efficiency of each curriculums based on traditional DEA under the assumption of CRS and VRS. 8(official 7, managers 1) curriculums are identified as efficient DMUs under the CCR-model, and 13(official 10, managers 3) under the BCC-model. We provide inputs that allow inefficient curriculum to be efficient DMUs on a production frontier, and a reference set for their bench-marking. Second, rank test, Wilcoxon-Mann-Whitney test to find a statistical significance of heterogeneity existing in efficiences between Bootstrap-DEA tenical vs Bootstrap-DEA pure technical was no significant difference. We have identified that G10, 11, 12 13, 25, 31, 33, 39 curriculums are the most efficiently produced in the technical and pure technical efficiency. Also we managed to measure the inefficiency which exists in efficiently produced curriculums when estimating the bias corrected efficiency scores. In Technical efficiency, Operation and facility was significant at the 10%. In Pure technical efficiency, facility was significant at the 10%.

The blast hole has a space between explosive and hole wall, and blast forces reaches the hole wall face with a large amount of loss during passing through this space. The loss ratio of blasting forces are different to this packing material of space like air, water, etc. In this study, the effect of packing materials is investigated by the numerical simulation analysis. The simulation is carried out to two phases; 1st phase is to compute the impacting forces reaching on the wall face passing through packing materials(air, water), 2nd phase is to study the blasting effect(block size of cracking, direction of driving forces, etc.) in real site. The reaching force at the wall face in the water is larger than in the air. This study shows that the water as packing materials is superior to the air.