• 한국콘텐츠학회논문지
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• 제8권11호
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• pp.395-403
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• 2008

본 논문은 인용필드의 정규화와 타입이 인용매칭에 미치는 영향에 대한 분석을 제시한다. 인용매칭은 같은 논문을 참조하는 인용레코드를 군집화하는 일련의 과정을 지칭한다. 인용매칭은 인용레코드를 구성하고 있는 인용필드들 간의 비교 결과들을 조합하여 인용레코드의 일치 여부를 판별하는 것이다. 인용매칭 단계 내의 인용필드 간 비교를 위하여 인용필드 정규화 및 인용필드 타입에 대한 연구가 필요하였으나, 인용매칭 방법에 대한 연구에 비해 상대적으로 미흡하였다. 본 연구에서는 인용매칭 성능이 인용필드의 정규화 및 인용필드 타입에 따라 달라진다는 것을 보였다. 추가적으로, 정규화를 적용한 다중 필드 결합을 이용한 인용매칭 성능을 분석하였다. 실험결과에 의하면, 인용필드는 정규화를 통하여 전반적인 성능향상이 있었으며, 인용필드 타입에 따라 성능 양상이 다르게 나타났다.

• Smart Structures and Systems
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• 제17권6호
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• pp.981-994
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• 2016

Two field research stations based upon atmospheric corrosivity monitoring combined with reinforced concrete corrosion rate sensors have been established in Kuwait. This was established for the purpose of remote monitoring of building materials performance for concrete under Kuwait atmospheric environment. The two field research sites for concrete have been based upon an outcome from a research investigation intended for monitoring the atmospheric corrosivity from weathering station distributed in eight areas, and in different regions in Kuwait. Data on corrosivity measurements are essential for the development of specification of an optimized corrosion resistance system for reinforced concrete manufactured products. This study aims to optimize, characterize, and utilize long-term concrete structural health monitoring through on line corrosion measurement and to determine the feasibility and viability of the integrated anode ladder corrosion sensors embedded in concrete. The atmospheric corrosivity categories supported with GSM remote data acquisition system from eight corrosion monitoring stations at different regions in Kuwait are being classified according to standard ISO 9223. The two nominated field sites where based upon time of wetness and bimetallic corrosion rate from atmospheric data where metals and rebar's concrete are likely to be used. Eight concrete blocks with embeddable anodic ladder corrosion sensors were placed in the atmospheric zone adjacent to the sea shore at KISR site. The anodic ladder corrosion rate sensors for concrete were installed to provide an early warning system on prediction of the corrosion propagation and on developing new insights on the long-term durability performance and repair of concrete structures to lower labor cost. The results show the atmospheric corrosivity data of the environment and the feasibility of data retrieval of the corrosion potential of concrete from the embeddable sets of anodic ladder corrosion sensors.

• 산업진흥연구
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• 제2권2호
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• pp.23-29
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• 2017

본 연구는 제조업의 위기탈출을 위한 새로운 방법을 제시하고자 현장 중심적 경영혁신 추진 내용을 정성적 성과와 정량적 성과로 나누어 살펴보았다. 현장 중심적 경영혁신은 관리자 중심의 관리방식에서 현장관리사원 중심의 관리 방식으로 전환하여 현장관리 사원이 당면한 문제점을 신속히 해결해가도록 도와주고 지원해 주는 조직으로 현장경영 교육을 통해서 일과 일이 아닌 것을 구분, 자신이 하고 있는 일의 낭비요인을 찾아 개선하고 고객의 요구에 맞추어 공정기준을 설정한다. 현장관리사원은 작업을 하기 전에 내가 할 일의 공정기준을 정확히 숙지하고, 사용할 원자재의 규격이 일치하는지 자주 검사를 실시하고, 자주 검사를 실시 후 규격을 검토하여 이상이 없으면 다음 공정에 인계해 주는 방법으로 교차 검증을 실시한다. 본 연구결과를 통해 제조기업의 경쟁력 제고를 위해 유용하게 활용될 수 있다. 급변하는 국제적 경영환경 변화에 적응하기 위해 새로운 경영혁신 기법이 요구되는 바, 본 연구가 이를 위한 또 하나의 시사점을 제공한 데 그 의의가 있다.

• Geomechanics and Engineering
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• 제33권1호
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• pp.29-40
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• 2023

Xanthan gum and starch compound biopolymer (XS), an environmentally friendly soil-binding material produced from natural resources, has been suggested as a slope protection material to enhance soil strength and erosion resistance. Insufficient wet strength and the consequent durability concerns remain, despite XS biopolymer-soil treatment showing high strength and erosion resistance in the dried state, even with a small dosage of soil mass. These concerns need to be solved to improve the field applicability and post-stability of this treatment. This study explored the utilization of an alkaline-based cation crosslinking method using calcium hydroxide and sodium hydroxide to induce non-thermal gelation, resulting in the enhancement of the wet strength and durability of biopolymer-treated soil. Laboratory experiments were conducted to assess the unconfined compressive strength and cyclic wetting-drying durability performance of the treated soil using a selected recipe based on a preliminary gel formation test. The results demonstrated that the uniformity of the gel structure and gelling time varied depending on the ratio of crosslinkers to biopolymer; consequently, the strength of the soil was affected. Subsequently, site soil treated with the recipe, which showed the best performance in indoor assessment, was implemented on the field slope at the bridge abutment via compaction and pressurized spraying methods to assess feasibility in field implementation. Moreover, the variation in surface soil hardness was monitored periodically for one year. Both slopes implemented by the two construction methods showed sufficient stability against detachment and scouring, with a higher soil hardness index than the natural slope for a year.

• 한국병원경영학회지
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• 제28권4호
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• pp.33-46
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• 2023

Purpose: This study analyzed the research published in KCI-registered journals related to healthcare marketing for the last 27 years from 1995 to 2022 to identify academic research trends, the specificity of the healthcare field and to suggest future research directions. Methodology: A total of 213 articles were selected for this study, and a descriptive analysis of the period and journals was conducted, as well as the analysis of research topics and keywords from the perspective of marketing strategy factors and performance factors. Findings: A total of 213 articles related to healthcare marketing have been published in the last 27 years. The descriptive analysis showed a steady quantitative increase, but the STP field showed a decreasing trend, and many papers were mainly published in the Korean Journal of Hospital Management. According to the analysis of research topics and keywords, STP field will be hard to become an active research topic in the future, and even in the 7P field, only Product, People, and Process can be researched according to medical law regulations, and other factors such as PX & WOM, CRM, and the Internet fields are expected to be research topics. Implications: Through the analysis of research trends over the past 27 years, we were able to identify the specificity of the healthcare marketing field in Korea and suggest future research directions based on this.

• 대한인간공학회지
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• 제21권3호
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• pp.13-24
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• 2002

Reduction and prevention of human error is one of the major interests for the enhancement of system safety and availability in Nuclear Power Plants (NPPs). As human beings have become the weak point in the system safety, a systematic evaluation on human performance during emergency situation should be performed in advance to identify the potential vulnerability of human tasks. Though the data gathering and analysis from real field is an important precondition, there were no available data in nuclear field of korea. This paper presents the result of human performance analysis on emergency tasks in NNPs. Firstly, a task analysis was performed to identify the characteristics of operator tasks during emergency condition and to classify them into a set of generic emergency tasks. Secondly, simulation data were collected and analyzed for the emergency tasks using the full scope simulator of Younggwang NPPs. The analyzed human performance information cover the event diagnosis time, the execution time of each procedural step, observation parameters, typer of irrelevant response, pattern of communication among staffs, and so on. These performance data would be used for human reliability analysis and the research of human error as technical bases.

• 한국태양에너지학회 논문집
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• 제35권5호
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• pp.49-56
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• 2015

In this study a hybrid heating system based on geothermal source and solar heat was developed in order to save energy for greenhouse heating and its field performance was evaluated. Developed system are composed of following parts: water tank, heat exchanger, heat pump, fan coil unit and heat storage unit. The working performance test was carried out in a greenhouse cultivating oriental orchids being managed by $23^{\circ}C$. Field performance test results showed that average heating coefficient of performance ($COP_h$) was 3.4 for the period from mid-January to mid-March 2013. Heating coefficient of performance ($COP_h$) of developed hybrid heat pump system was more sensitive to water tank temperature than outside air temperature. This study showed that developed hybrid heat pump system has a potential to save the heating costs up to 91% compared to conventional agricultural oil heaters.

• 한국정보시스템학회지:정보시스템연구
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• 제20권2호
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• pp.57-80
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• 2011

This study analyzed the effects of smart phone using for business on work performance in the field. We classified functional and practical aspects of smart phone affecting employee's work performance through former studies. As independent variables, we selected portability of equipment, rapidity of information and ease of use for functional side, and selected fit to work and subjective norms for practical side. And dependent variable was work performance. We also suggested that innovation resistance would be a moderator. The results showed that the effect of work performance was influenced by portability of equipment and fit to work. However, hypotheses on moderating effects of innovation resistance were not supported. This study made a discrimination in terms of an application phase of smart phone as against former studies. The results of this study will provide practical implications for related enterprises in the field to develop ways of using smart phone as an effective strategy.

• 한국도로학회논문집
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• 제19권6호
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• pp.57-66
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• 2017

PURPOSES : This study develops eco-friendly asphalt reinforcement materials applicable to bridge deck pavement. The main purpose is to ensure highly reliable quality applicable to structures and the possibility of practical application. The main target of the study is to develop materials that are environmentally friendly and capable of improving performance. METHODS : The application of double-reinforcement fiber improves the performance of the road pavement. 1. We use recycled film for application of sheet-typed reinforcement. 2. We use preprocessing fibers to reinforce the properties of composite pavement materials. RESULTS : The developed products may produce materials that fit the purpose of achieving stability and environmental friendliness. Sheet-typed reinforcements use more than 50% recycled resin. The most important type of damage to the asphalt layer is deflection (plastic deformation). These products have a very high deflection resistance of not less than 6,000 cycles/mm. In addition, all performance is excellent. Thus, it will be easier to access the field in the future. CONCLUSIONS : Fiber-reinforced asphalt pavement showed excellent performance. Sheet-typed reinforcements containing 50% recycling resin produced good performance in terms of functionality as well as environmental friendliness. Thus, enhancing the field applicability will enhance the usability of the reinforcements.

• 한국농공학회지
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• 제41권4호
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• pp.37-46
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• 1999

Field experimnet of constructed wetland for rural wastewater treatment was performed from July 1998 to April 1999 including winter to examine the seasonal effect on the wetland performance. The system worked without freezing even under $-10^{\circ}C$ of air temperature as long as watewater was flowing. BOD removal rates varied in similar pattern as the air temperature, and winter performance was relatively lower than that in the growing season. However, removing performance during winter was still significant, and BOD removal rates were almost the the same as in the growing season. SS removal rate was relativelyless affected by temmperature, but lower decay rate during the winter can result in accumulation of the SS in the system, which releases constituents in the next spring and can affect whole system performance. The winter removal rates of nutrients like T-N and T-P were decreased about half compared to the growing season and low temperature. To maintain stabilized wetland performanced including winter time, supplying minimum heating for plants could be an alternative in field application. Experimental data was compared with NADB(North Americal Wetlands for Water Quality treatment database), and general performance of the system was within the reasonable range. The pollutant loading and effluent concentration of the experimented system were in high margin. Base on the experiment and databases, the required effluent water quality could be achieved if loading rate adjusted as ilulstrated in the database.