• 한국산학기술학회논문지
• /
• 제15권3호
• /
• pp.1424-1435
• /
• 2014

본 연구는 유아교사의 직무스트레스, 교수효능감, 조직몰입의 관계를 밝히는 데 목적을 두고, 특히 유아교사의 직무스트레스가 조직몰입에 미치는 영향에 있어 교수효능감의 매개효과를 살펴보고자 하였다. 이를 위해 D광역시 소재 유치원과 어린이집 유아교사 각 250명씩 총 500명을 대상으로 설문을 실시하였고, 그중 442부를 회수하여 426사례를 분석에 사용하였다. 연구결과, 유아교사의 직무스트레스는 교수효능감 및 조직몰입과 부적 상관관계를 보였으며, 교수효능감은 조직몰입과 정적 상관관계를 보였다. 또한 유아교사의 교수효능감은 직무스트레스와 조직몰입 간의 관계에서 부분 매개효과를 가지는 것으로 나타났다. 본 연구는 유아교사의 소진을 설명하고자 직무스트레스를 바라보는 방식에서 그 방향을 전환하여, 긍정적 관점인 조직몰입을 설명하기 위한 예측변인으로서 직무스트레스를 바라보았다는 데 의의가 있으며, 교수효능감의 매개효과를 확인함으로써 환경적 개입에 대한 가능성을 제공하였다.

• 한국임상수의학회지
• /
• 제22권4호
• /
• pp.353-356
• /
• 2005

This study was performed to examine the antibacterial efecacy of topical agent extracted from Phellodendri cortex, Forsythia fructus and Glycyrrhizae radix as an alternative dermatological agent. Also, the most efficacious concentration of this agent and the skin-contact time inhibiting the vegetation of bacterial cells in various dilutions were determined. Five strains of Staphylococcus intermedius were exposed to various dilutions of this agent. The efficacy was assessed after exposure for time periods varying between 0 and 30 min. The antibacterial efficacy was shown to be the strongest at dilution of 1: 2. The number of viable organisms decreased significantly after 8 minutes of exposure time and was the smallest after 30 minutes of exposure time. This alternative dermatological agent is considered to be effective against Staphylococcus intermedius and has a potential to be a new topical agents far the treatment of pyoderma in dogs.

• 한국보육지원학회지
• /
• 제8권2호
• /
• pp.101-120
• /
• 2012

본 연구는 보육현장의 질적 수준을 향상시키기 위한 목적으로 국공립 어린이집과 민간 어린이집에서 근무하는 보육교사들을 대상으로 보육교사의 효능감이 직무만족에 미치는 영향을 살펴보고자 한다. 보육교사들이 어린이집에서 근무하는데 변화의 잠재력을 보여주고 이들을 발전시킬 기회를 제공하기 위해서는 보육교사의 효능감이 무엇보다 중요하다. 또한 이를 바탕으로 영유아와 학부모에게 양질의 보육서비스를 제공하기 위해서는 보육교사의 직무만족이 필수적이다. 이에 본 연구에서 국공립 어린이집과 민간 어린이집에서 근무하는 보육교사들의 개인적 특성과 효능감을 비교하여 보육교사의 직무만족 향상을 위한 다양한 실천과제를 논의하였다. 연구결과는 첫째, 어린이집 소재지는 국공립 어린이집과 민간 어린이집 보육교사 모두의 직무만족도에 유의한 영향을 미치는 공통요인으로 나타났다. 둘째, 국공립 어린이집 보육교사들은 민간 어린이집 보육교사들과는 달리 가정연계 및 긍정적 학습환경 조성효능감에서 직무만족도에 유의한 영향을 미치고 있었다. 셋째, 국공립 어린이집과 민간 어린이집 보육교사의 직무만족도에 있어 의사결정참여 효능감이 공통적으로 유의한 영향요인으로 나타났다.

• 지식경영연구
• /
• 제19권2호
• /
• pp.163-185
• /
• 2018

In order to solve problems in an uncertain and complicated management environment of the modern world, a creative solution that combines diverse perspectives, knowledge, and effort based on diversity within an organization is required. Smart work environment provides an opportunity to express the potential diversity of an individual, extending the source of ideas to the organization, enhancing communication, and linking and sharing information and knowledge. So, this results in increased creative behavior. The purpose of this study is to investigate the effect of the process of connecting and sharing information and knowledge of organizational members on creative behavior and the effect of smart work environment in the process. The purpose of this study is to identify roles of job autonomy, self-efficacy, knowledge sharing and smart work environment in creative process. For the study, 353 surveys with work use group(156 people) and unused group(197 people). Statistical analysis included validity and reliability analysis, structural model analysis. The results showed that self-efficacy and job autonomy had positive effects on creative behavior and knowledge sharing, and job autonomy had a positive effect on self-efficacy. Knowledge sharing has a positive effect on creative behavior, and mediates the relationship between self-efficacy, job autonomy and creative behavior. Particularly, knowledge sharing has a more positive effect on smart work use group. In case of smart work use group, self-efficacy and job autonomy have a relatively high influence on knowledge sharing rather than direct influence on creative behavior appear. This result implies that the achievements of smart work are revealed in terms of knowledge sharing and creative behavior.

• 유통과학연구
• /
• 제10권12호
• /
• pp.35-43
• /
• 2012

Purpose - This study analyzes the effects of types of leadership on the employees of Italian restaurants, its efficacy, and organizational citizenship behavior, utilizing a causal assessment model. In this study, independent variables such as the type of leadership perceived in the manager or chef by an Italian restaurant's employees, and its efficacy were parameters, and the organizational citizenship behavior and organizational effectiveness were the variables representing the results in the hypothesis. The study aimed to draw implications by verifying the leadership via efficacy and the impact on organizational citizenship behavior of Italian restaurants. Research design, data, methodology - For the purpose of this analysis, specific questionnaire items were configured according to the theory and efficacy of the study. From a questionnaire used in organizational citizenship behavior comprising 22 questions, six were modified to suit the research purpose of this study. The configured questionnaire comprised 5 parts and 40 items. A Likert (Likert) 5-point scale was utilized to measure responses to the questionnaire items from the employees of an Italian restaurant in Seoul who participated in the survey. For data collection, 400 questionnaires were distributed, and 344 collected. Factor analysis and reliability verification were conducted using SPSS18.0 and AMOS18.0. A covariance structure analysis was conducted to test the research hypotheses. Results - Based on the results of the analyses, the summary and suggested implications of the research are as follows: The covariance structure analysis used to analyze the kind of effect transformational and transactional leadership styles in Italian restaurant employees had on self-efficacy, group-efficacy, and organizational citizenship behavior, indicated that among the characteristics of transformational leadership (such as, idealized influence, inspirational motivation, individual consideration, and intellectual stimulation), idealized influence and individual consideration had a positive influence on self-efficacy. Idealized influence, individual consideration, conditional reward, and management by exception also positively influenced self-efficacy and altruistic and conscientious behavior (organizational citizenship behavior). Conclusions - Results suggest that with regard to self-efficacy and group efficacy, managers in different departments and chefs should provide team members with a vision for the future, increase their confidence in their abilities, and build their trust in the organization. By evaluating employee performance and experiences, management can demonstrate leadership and encourage organizational citizenship behavior through enjoyable, voluntary participation. Transformational and transactional leadership is effective in group processes that include social-exchange relationships, self-efficacy and group efficacy, and organizational citizenship behavior. However, as this research study utilizes only self-reported data, it has several limitations, such as a vulnerability of errors caused by the various experiment types. A significant limitation of this study is the lack of potential for the duplication of results. The covariance structure analysis, however, provides complementation to limit the impact of errors from self-reporting studies. A future study can extend this research by utilizing different data collection methods.

• 한국IT서비스학회지
• /
• 제17권3호
• /
• pp.157-169
• /
• 2018

This study aims to examine the factors influencing user attitude toward Smart Home service as the demand of Smart Home service is increasing and it somewhat involves privacy risk. To this end, the research model includes five independent variables, trust in service provider, perceived privacy risk, self efficacy, interpersonal influence, and external influence, influencing the attitude toward Smart Home service. So, this study aims to analyze which variable is the most critical and influential among the five factors and suggest the direction of Smart Home industries. This study first reviews the literature on Smart Home services and describes its Korean situation. Data were collected from residents living in a smart apartment complex. The results show that (1) users have a very positive attitude toward Smart Home service in total, (2) trust in service providers, self efficacy, and interpersonal influence positively impact user attitude toward Smart Home service and interpersonal influence is the most influential variable, however, (3) perceived privacy risk and external influence dose not significantly impact it. These results imply that the role of service providers, self efficacy, and interpersonal influence are important factors on the user attitude toward Smart Home service. Finally, the study's findings and limitations are discussed and potential avenues for future research are suggested.

• 한국IT서비스학회지
• /
• 제13권3호
• /
• pp.235-255
• /
• 2014

Social Network Service (SNS) with emergence of Web 2.0 have been developed rapidly. Unlike other games, social network game is based on the relationship with smart devices and studied for user-centered behavior as a potential factor derived from the Technical Acceptance Model (TAM). This research is conducted for finding out influencing factors on continuous intention for smart device users. Therefore, the independent variables consist of subjective norm, mobility, playfulness, self-efficacy, and ease of use. The intermediate variables also compose of flow, and user satisfaction and the dependent variables as continuous intention. The result of study shows the following: First, subjective norm, playfulness, self-efficacy and ease of use except mobility have the positive effect on user flow. Second, subjective norm, mobility, playfulness and ease of use except self-efficacy have significantly the positive effect on user satisfaction. Finally, user flow has significantly the positive effect on user satisfaction and continuance intention and a factor of user satisfaction have significantly the positive effect on continuance intention.

• 지식경영연구
• /
• 제20권1호
• /
• pp.133-153
• /
• 2019

Due to the uncertainty of dynamic business environment, modern organizations have been giving attention to dynamic capabilities beyond traditional notion of core competence. Among them, absorptive capacity and boundary-spanning activity are considered the most important. The former refers to activities regarding acquisition, assimilation, transformation and exploitation of internal and external knowledge. The latter is composed of boundary-loosening and boundary-tightening activities to detect internal or external information and then to preserve, protect, or acquire resources. Thus, both have achieved wide recognition as a potential source of change and innovation. This study investigated the cross-level relation between boundary-spanning leadership at team level and absorptive capacity at individual level. We also explored self-efficacy and extra-role behavior that can affect employees' absorptive capacity. To test multi-level analysis, the survey data were collected from 862 members in 137 teams of different firms. Results revealed that boundary-spanning leadership had the positive cross-level impact on absorptive capacity in the team context. Moreover, absorptive capacity was positively associated with self-efficacy and extra-role behavior at individual level. Based on these findings, we provided theoretical and practical implications to address rapidly changing environments and discussed limitations of this paper for further research.

• Journal of Microbiology and Biotechnology
• /
• 제33권4호
• /
• pp.419-429
• /
• 2023

Ultraviolet C (UV-C, 200-280 nm) light has germicidal properties that inactivate a wide range of pathogenic and spoilage microorganisms. UV-C has been extensively studied as an alternative to thermal decontamination of fruit juices. Recent studies suggest that the efficacy of UV-C irradiation in reducing microorganisms in fruit juices is greatly dependent on the characteristics of the target microorganisms, juice matrices, and parameters of the UV-C treatment procedure, such as equipment and processing. Based on evidence from recent studies, this review describes how the characteristics of target microorganisms (e.g., type of microorganism/strain, acid adaptation, physiological states, single/composite inoculum, spore, etc.) and fruit juice matrices (e.g., UV absorbance, UV transmittance, turbidity, soluble solid content, pH, color, etc.) affect the efficacy of UV-C. We also discuss the influences on UV-C treatment efficacy of parameters, including UV-C light source, reactor conditions (e.g., continuous/batch, size, thickness, volume, diameter, outer case, configuration/arrangement), pumping/flow system conditions (e.g., sample flow rate and pattern, sample residence time, number of cycles), homogenization conditions (e.g., continuous flow/recirculation, stirring, mixing), and cleaning capability of the reactor. The collective facts indicate the immense potential of UV-C irradiation in the fruit juice industry. Existing drawbacks need to be addressed in future studies before the technique is applicable at the industrial scale.

• The Korean Journal of Physiology and Pharmacology
• /
• 제23권5호
• /
• pp.393-402
• /
• 2019

Aurora kinases inhibitors, including ZM447439 (ZM), which suppress cell division, have attracted a great deal of attention as potential novel anti-cancer drugs. Several recent studies have confirmed the anti-cancer effects of ZM in various cancer cell lines. However, there have been no studies regarding the cardiac safety of this agent. We performed several cytotoxicity, invasion and migration assays to examine the anti-cancer effects of ZM. To evaluate the potential effects of ZM on cardiac repolarisation, whole-cell patch-clamp experiments were performed with human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) and cells with heterogeneous cardiac ion channel expression. We also conducted a contractility assay with rat ventricular myocytes to determine the effects of ZM on myocardial contraction and/or relaxation. In tests to determine in vitro efficacy, ZM inhibited the proliferation of A549, H1299 (lung cancer), MCF-7 (breast cancer) and HepG2 (hepatoma) cell lines with $IC_{50}$ in the submicromolar range, and attenuated the invasive and metastatic capacity of A549 cells. In cardiac toxicity testing, ZM did not significantly affect $I_{Na}$, $I_{Ks}$ or $I_{K1}$, but decreased $I_{hERG}$ in a dose-dependent manner ($IC_{50}$: $6.53{\mu}M$). In action potential (AP) assay using hiPSC-CMs, ZM did not induce any changes in AP parameters up to $3{\mu}M$, but it at $10{\mu}M$ induced prolongation of AP duration. In summary, ZM showed potent broad-spectrum anti-tumor activity, but relatively low levels of cardiac side effects compared to the effective doses to tumor. Therefore, ZM has a potential to be a candidate as an anti-cancer with low cardiac toxicity.