• Korean Journal of Microbiology
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• v.46 no.2
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• pp.113-121
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• 2010

Bacillus subtilis PhoP-PhoR two-component system (TCS) senses phosphate deficiency conditions, and then controls expression of the Pho regulon to prolong survival. The sensor histidine kinase, PhoR, is autophosphorylated and transfers the phosphate to the response regulator, PhoP. Phosphorylated PhoP (PhoP~P) binds to repeated 6-bp consensus PhoP binding sequences of Pho regulon promoters and activates or represses gene expression. Pho signal transduction systems are part of interconnected signal transduction network involving at least three TCSs (PhoP-PhoR, ResD-ResE TCS, SpoOA phosphorelay), a global carbon metabolism regulator (CcpA), and transition state regulators (AbrB, ScoC). In addition, PhoP-PhoR TCS is cross related with YycF-YycG TCS by cross-regulation. While indescribable progress has been made in understanding phosphate deficiency stress response through refined expression of the Pho regulon in the recent past years, many important questions still remain. Solving these questions may provide important information for application study using B. subtilis.

• Journal of The Korean Association For Science Education
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• v.31 no.6
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• pp.958-969
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• 2011

The purpose of this study is to investigate relationships among scientific self-efficacy, achievement in science and cognitive self-regulation learning strategy. The subjects were composed of 158 elementary school students. Data of students' self-efficacy related to science and cognitive self-regulation learning strategy measured by questionnaire were analyzed. Science achievement scores were also collected. The results indicated that self-efficacy and cognitive self-regulation learning strategy predicted science scores. The findings showed that cognitive selfregulation learning strategy mediated the relation between self-efficacy and achievement in science. Memory learning strategy, considered a cognitive self-regulation learning strategy, did not mediate the relation between self-efficacy and science scores. The implications of science education to develop students' science achievement in the classroom and the suggestions for future researchers are discussed.

• 한국벤처창업학회:학술대회논문집
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• 2019.11a
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• pp.61-65
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• 2019

본 연구에서는 청년예비창업가의 창업가정신과 창업동기가 사회적 자본을 조절효과로 창업의지에 미치는 영향에 관한 연구이다. 최근 앞으로의 국가경제를 이끌어갈 청년들의 일자리 부족문제와 청년실업률(15세에서 29세의 경제활동인구 중 실업자의 비율)의 증가에 따른 문제가 대두되고 있다. 이를 극복하기 하고 국가경제발전을 위해선 창업은 매우 중요한 전략 중 하나이며 이를 위해 정부에서는 (청년)예비창업가들의 창업의지를 높이기 위해 다양한 노력하고 있다. 창업의지에 있어 창업가정신과 창업동기가 필수적으로 필요하며 이러한 창업가정신과 창업동기를 가지게 되면 (청년)예비창업가들은 자신들이 부족한 사회적 자본을 확보하기 위해 노력하게 되고 이러한 과정 속에서 사회적 자본을 가지고 있고 없고의 차이로 인한 (청년)예비창업자들의 창업의지에 대해 연구하고자 한다. 그렇기에 창업의지에 있어 창업가정신과 창업동기 그리고 사회적 자본의 중요성을 강조하고자 한다. 본 연구는 첫째, 창업가정신이 창업의지에 영향을 미치는지 여부 분석, 둘째, 창업동기가 창업의지에 영향을 미치는지 여부 분석, 셋째, 사회적 자본이 창업가정신과 창업의지에 관계에서 조절효과를 가지는지 여부 분석, 넷째, 사회적 자본이 창업동기와 창업의지에 관계에서 조절효과를 가지는지 여부 분석 등이다. 현재까지 받은 140개의 설문을 받았으며, 본 연구는 창업가정신과 창업동기가 창업의지에 유의한 정(+)의 영향을 미치는지, 사회적 자본은 창업가정신과 창업의지의 관계에서 정(+)의 조절효과를 가질 것인지, 사회적 자본은 창업동기와 창업의지의 관계에서 정(+)의 조절효과를 가질 것인지 등을 분석할 것이다 앞으로 더 많은 설문지를 통해 가설에 대한 검증을 할 것이며 이에 본 연구결과를 통해 (청년)예비창업가에 창업의지에 있어 창업가정신, 창업동기, 사회적 자본의 필요성을 시사점으로 제시하려 한다.

• 한국벤처창업학회:학술대회논문집
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• 2023.11a
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• pp.49-52
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• 2023

최근 첨단기술의 발달로 인해 기존의 생산업들보다 고 부가 가치를 이끌어 낼 수 있는 아이디어의 중요성이 대두되고 있다. 이러한 점에서 창업은 참신한 아이디어로 고 부가 가치를 이끌어 낼 수 있다는 점에서 중요하다 할 수 있고 국가의 정책적으로도 많은 창업을 이끌어 내려는 노력이 이어지고 있다. 본 연구는 이러한 창업 중 스포츠 창업의 분야에서 체육동호인의 개인적 특성 요인이 창업의지에 미치는 영향에 대해 알아보고자 하며, 이러한 관계에 창업에 대한 자기효능감 요인의 조절효과 영향에 대하여 밝히고자 한다. 창업의지의 결정 요인으로서 개인적 특성 요인과 네트워크 요인, 창업지원 인식 요인이 창업의지에 미치는 영향에 대해 알아보고자 하였으며, 이 요인들은 창업효능감의 조절로 인하여 더욱 활동력이 강화될 것으로 보고 창업효능감의 조절효과를 살펴보고자 하였다. 독립변수로 잠재적 창업자의 개인적 특성 요인(성취욕구, 위험감수성향, 혁신성), 네트워크 요인(온라인 교류, 오프라인교류), 창업지원 인식 요인(동호회 창업지원 인식, 정부 창업지원 인식), 조절변수로는 창업효능감, 종속변수로는 창업의지의 내용으로 연구모형을 구성하였다.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.41 no.1
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• pp.41-48
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• 2017

Fine polymeric fibers have been gaining interest from the energy harvesting/storage, tissue, and bioengineering industries because of advantages such as the small diameter, high porosity, permeability, and similarities to a natural extracellular matrix. Electrospinning is one of the most popular methods used to fabricate polymeric fibers because it is not as limited in regards to the materials selection, and it does not require expensive or complex equipment. However, electrospun fibers have a severe aerodynamic instability because the small diameter fibers are able to pass through the atmospheric layer when there is a high electric field. As a result, electrospun fibrous mats have serious difficulties with controlling its shape and geometric properties. In this study, a hybrid nano/microfibrous mat is presented that is fabricated using electrospinning with two different solvent-based PCL solutions. This provides control of the fiber diameter, mat porosity, and mechanical properties. Various hybrid fibrous mats were fabricated after an experimental investigation of the effects of solvent on fiber diameter. It was then demonstrated that the mechanical properties and porosity of the fabricated various hybrid mats could be successfully controlled.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.1
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• pp.91-99
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• 2011

Adult-learners of online education have been distant from studying for a long time and are rather familiar with the old massive education. As a result, despite the excellent ability in self-control learning that results in great academic performances and academic continuity, the learners give up on learning, feeling depressed for not being able to perform their advantage, the self-control learning ability. The study developed a self-control learning model and UDL design learning model in order to establish e-mentoring system. For the analysis on results of the experiment, the researcher extracted academic grade, the rate of re-register, and the amount of total studying time after dividing new students and transfer students of H cyber university into the control group and the experimental group. In conclusion, the results showed that more satisfied the control group is, the higher academic achievements and the higher academic continuity are accomplished.

• The Journal of the Korea Contents Association
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• v.15 no.9
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• pp.257-272
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• 2015

This study is to verify how the economic, social and moderating effect factors of baby boomer generation workers' affect the subjective health evaluation. The subjective of this study was 1,202 workers of baby boomer generation by using the 4th data of Korea longitudinal study of aging(KLoSA) from Korea Labor Institute in 2012. Economic and social factors were selected as scales to analyze if there is meaningful difference in subjective health evaluation. Method of frequency analysis, t-test, ANOVA and correlation analysis was used, and multi regression analysis was also conducted to verify whether the private health insurance has control effect over the relation between the subjective health evaluation and the economic & social factor. As a result of the study, age, education, home ownership, peer group meeting, overall satisfaction, private health insurance were major factors affecting the subjective health evaluation of baby boomer generation. Moreover private health care were turned out to have a moderation effect in relation between economic, social factor and subjective health evaluation.

• Journal of vocational education research
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• v.36 no.4
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• pp.21-40
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• 2017

The purpose of this study is to demonstrate the effects of job training program satisfaction on objective training performance such as employment rate. In addition, the NCS(National Competency Standards) level was considered as a moderating variable in order to clarify the boundary conditions between job training program satisfaction and employment rate. The data used for the analysis of the research model are 513 job training programs that provide employment rate information among job training programs of 2016 Gwangju area on HRD-Net. The results of the analysis are summarized as follows. First, The satisfaction score of the job training programs calculated on the basis of the six dimensions of satisfaction is 4.46. The NCS level of the job training programs ranged from 2 to 6. The average score of the programs was 3.32. Second, satisfaction with the job training programs has no statistically significant effect on the employment rate, but the NCS level of the job training programs was found to be statistically significant in the interaction effect. Finally, policy implications, limitations, and further research directions are mentioned through this study.

• Monthly Duck's Village
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• s.73
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• pp.39-48
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• 2009

오리의 품질은 사육자의 의지에 따라 얼마든지 육질등급을 조절할 수 있다. 따라서 오리 사육장의 위생적인 환경개선으로 고품질화 하여 시장 경쟁력을 갖추고 볼 것인가, 아니면 반대로 생산원가를 최소화 하여 다량생산 방식으로 판매의 폭을 넓힐 것인가, 어느 쪽이든 다 가능하므로 사육자가 우선적으로 선택해야 할 문제이다.

• Polymer Science and Technology
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• v.22 no.6
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• pp.545-552
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• 2011