• 한국경영과학회:학술대회논문집
• /
• 대한산업공학회/한국경영과학회 1994년도 춘계공동학술대회논문집; 창원대학교; 08월 09일 Apr. 1994
• /
• pp.611-616
• /
• 1994

Developing the safety training program has been a major research topic in CBT as well as in traditional teaching and learning. With regard to determining learning control in CBT, it is important to consider not only the characteristics of learning tasks but also student's individual difference. In this regard, the purposes of this study are to develop the CBT program as well as animation program in order to increase the student's performance.

• 한국가금학회지
• /
• 제22권2호
• /
• pp.97-104
• /
• 1995

Recently, DNA fingerprinting has been utilized as the most powerful tool for genetic analysis and improvement of poultry. This technique enables us to solve several problems of poultry breeding ; traits of low heritability, difficulty in keeping the performance records, measuring in late of life, and sex limited traits. Application of DNA fingerprinting is chiefly focused to individual and population identification, evolution force, quantitative trait marker, introgression of new gene, and prediction of heterosis. Thus, research work on DNA fingerprinting will he accelerated to analyze genetic components exactly and improve the performance of poultry.

• 한국지진공학회:학술대회논문집
• /
• 한국지진공학회 1998년도 추계 학술발표회 논문집 Proceedings of EESK Conference-Spring 1998
• /
• pp.274-285
• /
• 1998

Increasing flexibility and lightness of recently built high-rise buildings make the structures susceptible to loads such as earthquakes and winds. Therefore, higher performance vibration control systems to reduce the vibration levels are demanded more than any time in the past. One of typical active vibration control systems is the active mass damper(AMD). In this paper, an active vibration control system consisting of small shaking table, building model, sensors, signal processing board and AMD is constructed. The dynamic characteristics of these individual systems are investigated through the experimental study. The performance of the active vibration control system is verified through harmonic resonant load excitation on building model.

• 벤처창업연구
• /
• 제13권1호
• /
• pp.73-87
• /
• 2018

창의성, 기업가정신, 기술혁신 지향성향 등은 기술혁신을 실현하기 위한 핵심적인 요인이다. 기업의 기술혁신을 주도하는 주체는 경영자이다. 햄브릭 교수의 고위층 이론(Upper Echelons Theory)에 따라 경영자 개인수준의 창의성이 조직의 기술혁신체계 내에 다양한 양상으로 투입될 것이고, 조직의 기술혁신체계가 경영자의 창의성에 긍정적인 영향을 받아 기업가지향성과 기술혁신지향성을 발현함으로써 혁신성과를 높일 것이다. 본 연구에서는 국내 반도체분야 기업 중 연구조직을 보유한 132개 기업의 경영자의 개인창의성이 연구조직의 기업가지향성, 기술혁신지향성을 매개로 기업의 혁신성과에 영향을 주는지 살펴보기 위하여 구조방정식으로 분석하였다. 이를 위해, 선행 연구 문헌에서 확인한 개인창의성, 기업가지향성, 기술혁신지향성 등을 측정 요소로 적용하였다. 구조방정식 분석 결과, 경영자의 개인 창의성이 연구조직의 기업가지향성과 기술혁신지향성을 매개로 할 때 기업의 혁신성과에 매우 유의미한 양(+)의 관계를 보였고, 경영자 창의성의 혁신성과와 직접적인 효과는 통계적으로 유의하지 않은 것으로 나타났다. 결국, 기술혁신을 주도하는 경영자의 개인창의성과 연구조직의 기업가 지향성과 기술혁신지향성은 기업의 성공적 혁신성과 창출을 위해 매우 중요한 요인임을 말해주고 있다.

• 한국노년학
• /
• 제30권4호
• /
• pp.1059-1075
• /
• 2010

노인일자리사업 실무자들의 직무성과는 노인일자리사업의 성과에 영향을 미칠 가능성이 높다. 따라서 노인 일자리사업의 지속적인 양적 성장에 발맞춰 질적인 성과를 제고하기 위해서는 노인일자리사업 담당자들의 업무 역량과 직무성과를 높이기 위한 노력이 필요하다. 이에 본 연구는 노인일자리사업 실무자들의 직무성과에 영향을 미치는 요인을 실무자들의 개인적 특성과 그들이 속해있는 조직구조의 특성을 중심으로 고찰하였다. 이를 위해 서울, 경기, 강원, 인천지역의 노인일자리사업 수행기관의 실무자를 대상으로 구조화된 설문지를 이용하여 설문조사를 실시하였다. 수집된 251부의 자료를 실무자의 개인적 특성과 조직구조에 따른 직무성과 수준에 대한 기초통계 분석 및 회귀분석을 실시하였다. 연구 결과, 개인적 특성에 있어서는 자신감, 노인일자리 사업에 대한 이해, 노인에 대한 인식이, 조직구조 특성에서는 조직의 공식화수준이 노인일자리사업 실무자의 직무성과에 유의한 영향을 미치는 것으로 나타났다. 즉 노인일자리사업 실무자들은 자신감이 높을수록, 노인 일자리사업에 대한 이해가 높을수록, 노인의 일과 사회활동에 대해 긍정적인 인식이 강할수록 그리고 실무자가 속한 조직의 공식화 수준이 높을수록 직무성과가 높은 것으로 나타났다. 이러한 결과는 실무자들을 위한 지속적인 임파워먼트와 사업에 대한 지식과 기술 습득 및 노인에 대한 긍정적인 인식 제고를 위한 전문화된 교육의 필요성을 시사해준다. 아울러 노인일자리 담당 실무자의 직무 및 업무처리과정에 대한 통합적 매뉴얼의 필요성도 시사해주고 있다.

• 한국정보과학회논문지:컴퓨팅의 실제 및 레터
• /
• 제14권2호
• /
• pp.191-195
• /
• 2008

본 논문은 IEEE 802.11e EDCA의 성능 향상을 위해서 클래스 트래픽에 기반하여 각 클래스의 경쟁 윈도우의 크기를 동적으로 조절하는 방안을 제안한다. IEEE 802.11e EDCA는 IEEE 802.11 DCF와는 달리 서비스 차별화를 위해 네 개의 클래스 AC마다 고정된 최소 경쟁 윈도우 크기인 CWmin 값과 최대 경쟁 윈도우 크기인 CWmax 값을 적용한다. 트래픽의 특성별로 나뉜 AC의 고정된 파라미터 값은 각 AC간의 차별화를 보장하지만 네트워크 환경이 혼잡할 경우 충돌 발생 확률을 높인다. 이를 해결하기 위해 채널과 네트워크 상태를 고려하여 일정한 주기마다 계산된 충돌 확률로 CWmin 값을 조절하는 CWminAS(CWmin Adaptation Scheme)가 제안되었다. 그러나 이 방식은 AC별 다른 파라미터 값으로 인해 발생되는 각 AC의 충돌 확률을 고려하지 않았다. 이러한 문제를 해결하기 위해 본 논문에서는 AC별 다른 파라미터 값으로 인해 발생되는 각 AC의 충돌 확률을 계산하고, CWmin 값을 조절하는 ACATICT(Adaptive Contention-window Adjustment Technique based on Individual Class Traffic) scheme을 제안한다. 실험 결과 ACATICT가 CWminAS보다 효율이 최대 약 10% 향상되었다.

• Asian-Australasian Journal of Animal Sciences
• /
• 제16권3호
• /
• pp.394-402
• /
• 2003

Individual and combined supplementation of phosphorus-adequate, wheat-based broiler diets with exogenous phytase and xylanase was evaluated in three experiments. The effects of the enzyme combination in lysine-eficient diets containing wheat and sorghum were more pronounced than those of the individual feed enzymes. The inclusion of phytase plus xylanase improved (p<0.05) weight gains (7.3%) and feed efficiency (7.0%) of broilers (7-28 days post-hatch) and apparent metabolisable energy (AME) by 0.76 MJ/kg DM. Phytase plus xylanase increased (p<0.05) the overall, apparent ileal digestibility of amino acids by 4.5% (0.781 to 0.816); this was greater than the responses to either phytase (3.6%; 0.781 to 0.809) or xylanase (0.7%; 0.781 to 0.784). Absolute increases in amino acid digestibility with the combination exceeded the sum of the individual increases generated by phytase and xylanase for alanine, aspartic acid, glutamic acid, glycine, histidine, isoleucine, phenylalanine, threonine, tyrosine and valine. These synergistic responses may have resulted from phytase and xylanase having complementary modes of action for enhancing amino acid digestibilities and/or facilitating substrate access. The two remaining experiments were almost identical except wheat used in Experiment 2 had a higher phytate concentration and a lower estimated AME content than wheat used in Experiment 3. Individually, phytase and xylanase were generally more effective in Experiment 2, which probably reflects the higher dietary substrate levels present. Phytase plus xylanase increased (p<0.05) gains (15.4%) and feed efficiency (7.0%) of broiler chicks from 4-24 days post-hatch in Experiment 2; whereas, in Experiment 3, the combination increased (p<0.05) growth to a lesser extent (5.6%) and had no effect on feed efficiency. This difference in performance responses appeared to be 'rotein driven'as the combination increased (p<0.05) nitrogen retention in Experiment 2 but not in Experiment 3; whereas phytase plus xylanase significantly increased AME in both experiments. In Experiments 2 and 3 the combined inclusion levels of phytase and xylanase were lower that the individual additions, which demonstrates the benefits of simultaneously including phytase and xylanase in wheat-based poultry diets.

• 한국경영과학회지
• /
• 제38권1호
• /
• pp.123-138
• /
• 2013

Keyword advertising has been used as a promotion tool rather than the advertising itself to online retailers. This is because the online retailer expects the direct sales increase when they deploy the keyword sponsorship. In practice, many online sellers rely on keyword advertising to promote their sales in short term with limited budget. Most of the previous researches use direct revenue factors as dependent variables such as CTR (click through rate) and CVI (conversion per impression) in their researches on the keyword advertising[14, 16, 22, 25, 31, 32]. Previous studies were, however, conducted in the context of aggregate-level due to the limitations on the data availability. These researches cannot evaluate the performance of keyword advertising in the individual level. To overcome these limitations, our research focuses on conversion of keyword advertising in individual-level. Also, we consider manageable factors as independent variables in terms of online retailers (the costs of keyword by implementation methods and meanings of keyword). In our study we developed the keyword advertising conversion model in the individual-level. With our model, we can make some theoretical findings and managerial implications. Practically, in the case of a fixed cost plan, an increase of the number of clicks is revealed as an effective way. However, higher average CPC is not significantly effective in increasing probability of purchase conversion. When this type (fixed cost plan) of implementation could not generate a lot of clicks, it cannot significantly increase the probability of purchase choice. Theoretically, we consider the promotional attributes which influence consumer purchase behavior and conduct individuals-level research based on the actual data. Limitations and future direction of the study are discussed.

• 지식경영연구
• /
• 제13권4호
• /
• pp.101-116
• /
• 2012

Knowledge management system is crucial for increasing organizational performance. However, despite this importance of knowledge management system, many companies fail to facilitate individual employees' knowledge sharing. One of reasons for this failure is the lack of consideration of how individual employees' characteristics and their interpersonal relationship influence on individual-level knowledge sharing. To explain individual-level knowledge sharing, this study investigates the mechanism that employees engage in knowledge sharing activities with their coworkers from the social exchange perspective. We have two purposes of study. First, we examine whether coworker's task-related help seeking affects employee's knowledge sharing with them. Second, we investigate the influence of help-seeker' characteristics as moderators on the relationship between task-related help seeking and knowledge sharing. Specifically, we considered coworker's maladjustment, LMX, and ability as moderators. Our analysis of 192 employees shows that the main effect of coworker's task-related help seeking on knowledge sharing is not significant. However, coworker's maladjustment and LMX moderate the relationship between task-related help seeking and knowledge sharing. The positive relationship between task-related help seeking and knowledge sharing is stronger when help seeker's maladjustment is high than when it is low. And the positive relationship between task-related help seeking and knowledge sharing is weaker when help seeker's LMX is high than when LMX is low. The results of this study have theoretical implications that enrich our understanding of individual-level knowledge sharing, and managerial implications that suggest employees' appropriate attitudes to facilitate knowledge sharing in a coworker relationship.

• KIEAE Journal
• /
• 제14권6호
• /
• pp.99-104
• /
• 2014

Recently supply of low energy house is increasing which can enhance energy efficiency and indoor environment comfort. Low energy house have to secure air tightness as well as thermal performance so house become high airtightness and inevitably need heat recovery ventilator to enhance indoor air quality. However, most of current ventilation systems are one-click, controlling the entire space so it causes increasing of heating load and fan power which makes it hard to save energy. Thus, Individual Control system is required which can achieve both enhancing indoor air quality and decreasing heating load and electric fan power. Thereby, in this study, we analyzed the correlation between ventilation and fan power through mock-up experiment and measured ventilation load under individual control system. As a result, under the condition of $24^{\circ}C$ of indoor temperature for 6 month(November to April) in Daejeon, ventilation load by fan speed was $10.9{\sim}19.6kWh/m^2{\cdot}a$ when operated 24 hours and $7.6{\sim}13.7kWh/m^2{\cdot}a$ when operated 12 hours in night time. In addition, it is possible to reduce at most 60% of ventilation load under the individual control system; measured ventilation load was $7.4kWh/m^2{\cdot}a$ when operated 24 hours, and $5.5kWh/m^2{\cdot}$ when operated 12 hours in night time.