• 한국기후변화학회지
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• 제7권1호
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• pp.85-93
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• 2016

This study the efficiency of greenhouse gas reduction of 'low carbon car collaboration fund' and its alternative 'control of average fuel efficiency and greenhouse gas', and 'improving driving behavior' were analyzed by using LEAP, long term energy analysis model. Total 4 scenarios were set, baseline scenario, without energy-saving activity, 'low carbon car collaboration fund' scenario, 'fuel efficiency improving scenario', and 'improving driving behavior' scenario. The contents of analysis were forecast of energy demand by scenario and application as well as reduction of greenhouse gas emission volume, and the period taken for analysis was every 1 year during 2015~2030. Baseline scenario, greenhouse gas emission volume in 2015 would be 7,935,697 M/T and 13,081,986 M/T in 2030, increased 64.8%. The analysis result was average annual increase rate of 3.4%. The expected average annual increase rate of other scenarios was, 'low carbon car collaboration fund' scenario 1.7%, 'fuel efficiency improving' scenario 3.0%. and 'improving driving behavior' scenario 3.4%. and these were each 1.7%, 0.3%. 0.3% reduce from baseline scenario. The largest reduction was 'low carbon car collaboration fund' scenario, and there after were 'fuel efficiency improving scenario', and 'improving driving behavior' scenario.

• Molecules and Cells
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• 제37권8호
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• pp.575-584
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• 2014

Potassium is a macronutrient that is crucial for healthy plant growth. Potassium availability, however, is often limited in agricultural fields and thus crop yields and quality are reduced. Therefore, improving the efficiency of potassium uptake and transport, as well as its utilization, in plants is important for agricultural sustainability. This review summarizes the current knowledge on the molecular mechanisms involved in potassium uptake and transport in plants, and the molecular response of plants to different levels of potassium availability. Based on this information, four strategies for improving potassium use efficiency in plants are proposed; 1) increased root volume, 2) increasing efficiency of potassium uptake from the soil and translocation in planta, 3) increasing mobility of potassium in soil, and 4) molecular breeding new varieties with greater potassium efficiency through marker assisted selection which will require identification and utilization of potassium associated quantitative trait loci.

• Journal of the Korean Statistical Society
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• 제30권3호
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• pp.419-433
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• 2001

In this paper we introduce a method of improving efficiency of the moment estimator of Dekkers, Einmahl and de Haan(1989) for the extreme value index $\beta$. a new estimator of $\beta$ is proposed by adding the third moment ot the original moment estimator which is composed of the first two moments of the log-transformed sample data. We establish asymptotic normality of the new estimator and examine and adaptive procedure for the new estimator. The resulting adaptive estimator proves to be asymptotically better than the moment estimator particularly for $\beta$<0.

• 한국정보기술학회 영문논문지
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• 제10권1호
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• pp.57-69
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• 2020

In general, many IoT devices, including smart phones, use LTE, Wi-Fi, and Bluetooth, and these communication modules generate a lot of energy consumption during periodic data transmission. This paper proposes a method of the data transmission mode change for improving energy efficiency in various communication environments that mobile devices may encounter. We propose an algorithm for setting the mode considering energy efficiency, data transmission performance and cost when the mobile device transmits data, and transmitting the data in an optimized manner according to the state of the mobile device. The proposed algorithm is implemented through experiments on energy efficiency for each communication module, and the scenario is used to verify how efficiently the proposed algorithm uses energy.

• 산경연구논집
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• 제14권3호
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• pp.19-26
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• 2023

Purpose: There is little emphasis on alternative forms of communication in psychotherapy, thus leaving a gap in research on the impact and effects of alternatives such as using artistic expressions. The current research, therefore, seeks to address the gap by investigating the effect of psychological counseling using Art Therapy on improving workers' job efficiency. Research design, data and methodology: The present author collected topic related to prior studies in terms of psychological counseling, art therapy, and employee job efficiency. And then, the author conducted clear procedure of the screening to eliminate inappropriate previous works including conference papers and dissertations so that this research could obtain only journal articles and books which have been proven by high degree of reliability and validity. Results: This research has concluded that psychological counselling using art therapy is pertinent to improving the worker's job efficiency in various ways, addressing properly mental health issues ranging from small to complicated or acute issues, thus promoting the well-being of employees to work at their optimum or best possible conditions. Conclusions: Psychological counseling using art therapy improves self-confidence, esteem, and awareness. Further, it enhances their social skills, expression capability, and general work ability. Elsewhere it improves coping with pain and reduces stress and depression.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2005년도 추계종합학술대회
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• pp.816-819
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• 2005

자바 프로그램의 실행 환경인 자바가상기계에서는 거의 모든 바이트코드들이 메모리 상에서의 자료 이동을 필요로 한다. 자료 이동은 에너지 소비를 일으키므로 이것의 최소화는 JVM의 에너지 효율성 향상에 매우 중요하다. 특히 자바 반복문은 반복 회수에 비례하는 양만큼의 자료 이동을 요구하므로 JVM의 에너지 효율을 높이기 위해서는 무엇보다도 자바 반복문의 에너지 효율을 높이는 것이 중요하다. 본 논문에서는 자바 반복문을 바이트코드 수준에서 분석하여 에너지 효율성을 높일 수 있는 여러 방법들을 제안하였다.

• 대한설비공학회:학술대회논문집
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• 대한설비공학회 2008년도 동계학술발표대회 논문집
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• pp.505-510
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• 2008

Improving energy efficiency is the important thing of energy saving strategies that was shown up result of IEA meeting and the G8 Summit. Energy audit was started in 2006 that Korea government policy for improving energy efficiency. Who used over 2,000toe/yr(tons of oil equivalent per year) energy consumption has to perform energy audit program of obligation every five years with auditing company. HANMI C&E as a company authorized by Government has diagnosed various type building. This case studies are chosen to best practices by KEMCO. This studies present efficient recommendation methods for improving system performance.

• 제어로봇시스템학회논문지
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• 제11권8호
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• pp.696-703
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• 2005

Since most autonomous mobile robots are powered by a battery, it is important to increase the continuous operating time without recharging. This can be achieved by improving the energy efficiency of a mobile robot, but little research on energy efficiency has been performed. This paper proposes two methods for improving the energy efficiency of an omnidirectional mobile robot.. One method is to realize a continuously variable transmission (CVT) by adopting the mechanism of steerable omnidirectional wheels. The other is the proposed steering algorithm in which wheel arrangement of the mobile robot is continuously adjusted so as to obtain the maximum energy efficiency of the motors during navigation. In addition, new omnidirectional wheels which can be transformed to the conventional wheels depending on the driving conditions are proposed to compensate for less efficient omnidirectional drive mode. Various tests show that motion control of the OMR-SOW works satisfactorily and the proposed steering algorithm for CVT can provide higher energy efficiency than the algorithm using a fixed steering angle. In addition, it is shown that the differential drive mode can give better energy efficiency than the omnidirectional drive mode.

• 한국유기농업학회지
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• 제24권3호
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• pp.385-412
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• 2016

This paper analyzes economic efficiency of strawberries and tomatoes farms using the data envelopment analysis (DEA). We examine how production characteristics and farm size affect overall efficiency (OE), allocative efficiency (AE), and technological efficiency (TE). We also survey sample farm households from the Farm Income Investigation database of Rural Development Administration to investigate management and cultivation techniques and to analyze economic efficiency by technique. Implications for improving efficiency are suggested in the conclusion.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 1993년도 추계학술대회 논문집
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• pp.166-170
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• 1993

This paper introduces API(Application Programming Interface) development technology for improving design efficiency which is concerned with special product design environment and development lead time of company's own. Even though most companies commercial CAD/CAM/CAE procucts. For reducing procuct development cycles and improving design efficiency. We have to automatize design processes through the standadizarion and parameterization and develop the specialized utilities as a infrastructure. The proposed API development methodology provides improved automatic 2D,3D modeling procedures and useful user interfaces at a small fraction of the cost and design effort.