• Magazine of the Korean Society of Agricultural Engineers
• /
• v.31 no.4
• /
• pp.90-95
• /
• 1989

The purpose of this study is to seek out the harrow water requirement applicable for the irrigation plan of paddy field and to find out the factors influenced on a variation in the requirement. The plots of experiment were arranged with randomized block design which was compo- sed of three kinds of soil texture (sandy loam, loam and silty loam) and ploughing depth (12cm, 17cm, and 22cm). The results obtained from this experimental study are summarized as follows. 1. Harrow water reguirement is not only changed by soil texture, but influenced by soil water content just before irrigating 2. Magnitude of total harrow water reguirement appli(able for the irrigation plan, when surface water depth and the water content just before irrigating is fixed on the basis of 30 mm and a shrinkage limit respectively, generally becomes to be 177.5mm, 116.3mm and 113. 8mm in the sandy loam, loam amd silty loam block, respectively. 3. The more a percolation of soil layer occurs, the more the harrow water requirement increases, but it is not much influenced by the increase in ploughing depth. 4. The larger a porosity of soil layer is, the more a net harrow requirement increases 5. The factors that influence on a variation in the harrow water requirement are appea- red to be percolation of soil layer, soil water content just before irrigating, porosity of soil layer, ploughing depth and designed surface water depth etc.

• Journal of Environmental Science International
• /
• v.5 no.5
• /
• pp.657-662
• /
• 1996

Meteorological and flux data measured from semiarid watersheds (Lucky Hills and Kendall) during the summer rainy and winter periods were used to study the sensitivity of the those variables used in the estimation of evapotranspiration rates. Relative sensitivity was examined to compare the importance of four meteorological and flux variables (net radiation wind speed, air temperature, and relative humidity) on Penman potential evapotranspiration (PET) estimation. The study results show that variations in Penman PET rates during the summer rainy period at both watersheds appears to be controlled by air temperature adn net radiation. During the winter period at both watersheds, wariations in Penman PET rates appears to be controlled by relative humidity and air temperature.

• The Journal of the Korea Contents Association
• /
• v.9 no.12
• /
• pp.314-321
• /
• 2009

This study investigates how the external factors of police organization, such as organizational environments, job characteristics, and compensations can influence job satisfaction and organizational commitment. Especially, this study considers what kind of organizational culture is dominant and what kind of compensation influences job satisfaction and organizational commitment in Korea. The purpose of this study is to find out the ways to maximize compensation and job satisfaction of police officers and to improve organizational commitment. The results are as follows: First, the more perceived job interest, social approval, organizational cohesion, and financial compensation, the higher job satisfaction, whereas the more perceived work environment, the lower job satisfaction. Second, the more perceived job interest, social approval, organizational cohesion, and financial compensation, the higher job satisfaction. However, the perceived work environment does not influence the job satisfaction. Third, the higher job satisfaction, the higher organizational commitment. Fourth, organizational cohesion, financial compensation and organizational environment have an effect on organizational commitment mediated by job satisfaction.

• Proceedings of the Plant Resources Society of Korea Conference
• /
• 2003.04a
• /
• pp.74-78
• /
• 2003

작물은 환경의 영향, 특히 기상조건과는 밀접한 관계가 있으며, 많은 학자들이 기상과 작물의 생육에 대한 연구결과를 보고하였다. (Kwon 등, 1989, 1993, 1994, cho등, 1979, 1984, Lee,등, 1982, Park등, 1975 ; Won등, 1983). 본 실험에서는 여수 지역의 고추수량과 기상과의 관계에 대한 기초 자료뿐만 아니라 1991년부터 2000년 까지의 기상 환경과 고추의 수량관계를 분석한 결과는 다음과 같다. 1. 월별 기상요인중 5월의 평균기온이 25.0%로 가장 높았고, 최고기온이 7.1%, 최저기온이 8.8%로 각각 높았으며, 8월의 평균기온이 6.6%, 최고기온이 6,2%, 최저기온이 6,9%로 각각 비교적으로 낮아서 변이가 적었다. 2. 생육 및 수량형질의 변이 계수에서 수량은 13.57%로 매우 높아 품종고유의 유전특성의 지배를 적게 받는 반면, 경장은 9.55%로 높아서 어느정도 환경요인에 영향을 받는 것으로 나타났다. 3. 기상요인과 수량 및 수량구성형질 간에서는 5월의 최고기온과 초장, 과장, 과경, 수량간에는 정의상관으로 유의성이 높았으며, 고추의 개화수정기간인 8월의 강수량과 초장, 과장, 수량간에는 부의 상관으로 유의성이 나타나 초기생육기인 5월의 높은기온과 개화기간인 8월의 적은 강수량이 높은 수량을 올릴수 있었다. 4. 수량과 수량형질 간에는 모두 정의상관으로 높게 유의성을 나타내었었다.

• Polymer(Korea)
• /
• v.31 no.2
• /
• pp.105-110
• /
• 2007

We investigated resin, thinner, painting, and injection for analyzing the chemical effect of polymer, and made the optimum solution with the best performance of ABS (acrylonitrile butadiene styrene) resin. The effect depended on chemical material especially its chemical and physical properties instead of mechanical transformation. When we looked over ABS resin, injection, chemical material and painting, we found out thinner was the main factor for painting problem. Throughout this test, we could solve the problem, secure the system for control process and drop many factors for changing quality.

• Journal of the Economic Geographical Society of Korea
• /
• v.11 no.4
• /
• pp.509-526
• /
• 2008

This paper aims to examine the evolutionary dynamics of the Korea's footwear industry by adopting evolutionary perspectives. To explain the evolutionary dynamics of an industry, evolutionary perspectives have paid a particular attention to exploring a variety of factors for influencing the evolution of the industry, such as the selection and imitation of the firm, the mechanism of firm's entry and exit, technological characteristics and innovation processes. The majority of existing research tend to explain that the decline of the Korea's footwear industry since 1990 was mostly due to the rapid rising of wage and the structural changes in labor-intensive industries. On the contrary, this paper attempts to explain the decline of the Korea's footwear industry, in terms of the path of selection and imitation, the dominant technological paradigm, regulatory frameworks and the meso trajectory of industry evolution. This paper concludes that the decline of the Korea's footwear industry since 1990 was appeared as a result of the evolutionary selection processes of the firms in order to adapt to changes in the environment of competition and the regime of market selection in the global footwear industry.

• The Korean Journal of Malacology
• /
• v.30 no.4
• /
• pp.409-413
• /
• 2014

Purple-colored shell individuals were discovered among normal green-colored shell individuals in artificial seed of Pacific abalone, Haliotis discus hannai, reared on an ordinary type of diatom and artificial diet. In the present study, factorial mating experiments were designed to clarify the genetic control of the variant (purple type) and normal (green type) of shell color. The parental population of purple type and green type individuals were derived from a single family between a female and male of each type of coloration. The all mating families were reared in same tank for the same breed environment. The individual of 4 type families were distinguished by paternity test using microsatellite DNA. In factorial mating experiments, all individuals offspring of GG (green type female and green type male), GP (green type female and purple type male) and PG (purple type female and green type male) mating types appeared to green type. In only PP (purple type female and purple type male) mating type, all individuals offspring appeared to purple type. The results suggested that the purple shell color is controlled by recessive purple type allele and a dominant green type allele at a single locus.

• The Journal of the Korea Contents Association
• /
• v.17 no.7
• /
• pp.144-157
• /
• 2017

Although student satisfaction is important in university development, there have been many studies in this area. Especially student satisfaction is closely related to emotional aspect, but most studies have tended to study it with cognitive view. To suggest the model of student satisfaction with hedonic view, the model which we present in this study includes professor presence and interaction, PAD(pleasure, arousal, dominance), satisfaction(dependent variable). Through reviewing previous studies, we expect that these professor presence and students' interaction effect PAD, in turn, PAD effect satisfaction. Survey research is employed to test hypotheses involving professor presence, students' interaction, PAD and satisfaction. Previous researches, such as education, marketing, game, have been referenced to measure constructs. We collected data involving students in a university, and used 219 respondents to analyze these data using LISREL structural modeling. Professor presence had positive effects on professor-student interaction, pleasure, arousal, and dominance. Also professor-student interaction had positive effect on pleasure and arousal, and student-student interaction had positive effects on pleasure and arousal, dominance. As a result, PAD had effects on students' satisfaction. In the final section, we discussed several limitations of our study and suggested directions for future research. We concluded with a discussion of managerial implications, including the potential to advance understanding learning in a university.

• Journal of Digital Convergence
• /
• v.18 no.8
• /
• pp.111-118
• /
• 2020

This study conducted an empirical analysis of SSE-listed companies to verify the effects of evaluation and disclosure of internal control systems on the agency costs management and controlling shareholders. Agency costs can affect the valuation of accounting information as asymmetry of information in the relationship between a company and its stakeholders, or induce financial costs as an adverse selection. If the firm's agency costs are reasonable, the valuation of the company can also move in a relatively positive direction. In this study, the evaluation information of the internal control system was analyzed through sales management ratio and equity ratio as substitute variables to analyze the relationship between management and agent costs of the controlling shareholders. In addition, independent control ratio, capital balance ratio, and company scale were used as control variables, as a result of the analysis, the evaluation information of internal control was found to be related to the agency costs of managers and governance structure. This study can be conducted to positive factors in evaluating the reliability and corporate value of accounting information according to the evaluation of internal control of SSE-listed companies and helps to understand the financial reporting environment.

• 한국벤처창업학회:학술대회논문집
• /
• 2017.04a
• /
• pp.30-30
• /
• 2017

성공한 창업가들이나 저명인사들에게 성공의 요인을 물어보면 운이 좋았다고 이야기를 한다. 새해가 되면 신년 운세를 보거나 중요한 사업에 대한 의사결정을 앞두고 운세를 알아보는 사람도 많다. 우리나라뿐만 아니라 토머스 J. 스탠리가 20년간 백만장자 733명을 분석하여 저술한 <부자들의 선택>을 보더라도, 백만장자의 12%가 자신들의 경제적 성공요인으로 '운'을 뽑았다. 하지만 현실적으로 지배적인 개념임에도 불구하고 그동안 행운에 대한 과학적 검증이 많지 않았다. 운에 대한 전통적인 관점은 운을 외부 요인으로 보고 무작위하고 통제 불가능하다고 보았기 때문이다. 통제가 불가능하기 때문에 미래를 예측 하는 데에 영향을 미치지 못하는 것으로 간주하고 있었다. 행운은 운명처럼 정해져있는 것일까? 왜 운이 좋은 사람들은 자신에게 유리한 기회를 잘 인지하고 포착하는 것일까? 현실 속에 운이라는 개념이 존재한다면 이런 현상이 벌어지는 이유에 대해 과학적 탐구가 필요할 것이다. 본 연구에서는 행운은 외부 환경에 의해서 무작위로 정해지는 것이 아니라 개인의 내적 속성으로 운을 통제 할 수 있다는 것으로 보았다. 행운에 대한 신념이 있는 사람은 우연한 사건에 대해 우연기술을 통하여 기회역량을 높일 수 있다는 것을 검증하고자 한다. 이를 검증하기 위하여 총 332명을 대상으로 설문조사를 실시하였고 행운의 신념이 우연기술의 매개역할로 창업 기회 역량에 미치는 영향을 분석하였다. 분석결과 첫째, 행운의 신념은 기회 역량에 정(+)의 영향을 미치는 것으로 나타났다. 둘째, 행운의 신념은 우연기술의 하위요인인 호기심, 인내성, 유연성, 낙관성, 위험감수 모두에 정(+)의 영향을 미치는 것으로 나타났다. 셋째, 우연기술의 하위요인 중 인내성, 낙관성, 위험감수만이 기회역량에 정(+)의 영향을 미치는 것을 나타났다. 넷째, 우연기술의 하위요인인 인내성, 낙관성, 위험감수는 행운신념과 기회역량의 관계에서 매개효과가 있다고 판단할 수 있었다. 본 연구는 행운에 대한 높은 신념을 갖고 우연 기술을 더 개발한다면 창업 기회 역량을 더 높일 수 있음을 시사한다.