• Journal of The Korean Association For Science Education
• /
• v.32 no.3
• /
• pp.502-523
• /
• 2012

The purpose of this study is to explore the relationship between selected components of conceptual ecology that are reflected in high school science students' statements, when answering questions. This study follows from a position that there is reason to believe that, in the process of answering questions, many aspects of conceptual ecology are likely to play a role. Data were gathered through six audio-taped interviews, the science teacher's profiles of each student, the students' personal journals, their assignments, and their examinations and participation in class. Kay and KY were selected as the focus of this study because theirs were both dramatic as well as representative cases. As the findings suggest, learning styles differ according to distinctions within individuals' conceptual ecologies. Thus the way in which a person learns science varies according to the construction of her/his conceptual ecology. This suggests that different forms of pedagogy may be effective with different types of learners. This also suggests that science educators may have a role in assisting students to develop into constructed, rather than received, learners.

• Journal of the Semiconductor & Display Technology
• /
• v.17 no.1
• /
• pp.12-20
• /
• 2018

Recently, web-based service software has been used as to combine various information or to share information according to the needs of users and the convergence of specialized fields and individual dependent systems. According to the necessity of the user, the proper service environment and the selective service environment according to the purpose and the needs of the user have been studied in a variety of specialized and combined professional research fields and industries. Software based on cloud systems and web services is being used as a tool for appropriate group and user groups and roles. A service system combined dynamically needs a module to manage a user through internal logic and grant a service access authentication. Therefore, it has been considered various approaches that a user who accesses the system is given a service access authority for a certain period of time. Also, when the deadline is over, the authority that you are given to access system will go through the process of expire the right. In this paper, we define the roles of users who access web services, manage user rights according to each role, and provide appropriate service resources to users according to their rights and session information. We analyzed the procedure of constructing the algorithm for the service according to the procedure of each user accessing the web service, granting the service resource and constructing a new role.

• Women's Health Nursing
• /
• v.14 no.1
• /
• pp.20-27
• /
• 2008

Purpose: This study was conducted to evaluate the relationship between breastfeeding empowerment and self-confidence in the maternal role of breastfeeding mothers. Method: Breastfeeding empowerment was measured on a scale of 5 developed by Kim & Park(2004), while self-confidence was measured on a scale of 4 by Lederman et al.(1981). Data was collected during a Breastfeeding Infant Contest held in September 2006 and 2007 in Changwon-si, Gyeongsangnam-do. The subjects were 278 breastfeeding mothers. The collected data was processed with the SPSS win 12.0 version. Result: Breastfeeding empowerment scored 4.21 on average (5.0 full score). The score showed a statistical difference only in breast milk quantity and breastfeeding knowledge. On the otherhand self-confidence in the maternal role showed a statistical difference only in breastfeeding frequency and know ledge. Self-confidence in the maternal role showed a statistically significant relationship with breastfeeding skill(${\gamma}=0.50$), with breastfeeding will(${\gamma}=0.45$), with adherence to exclusive breastfeeding(${\gamma}=0.35$) and with group empowerment(${\gamma}=0.39$). Conclusion: The positive relationship between breastfeeding empowerment and self-confidence in the maternal role implies that breastfeeding empowerment may be utilized to promote self-confidence in the mother's role.

• BMB Reports
• /
• v.50 no.11
• /
• pp.578-583
• /
• 2017

Programmed cell death-1 (PD-1) is a coinhibitory molecule and plays a pivotal role in immune regulation. Here, we demonstrate a role for PD-1 in pathogenesis of inflammatory bowel disease (IBD). Wild-type (WT) mice had severe wasting disease during experimentally induced colitis, while mice deficient for PD-1 ($PD-1^{-/-}$) did not develop colon inflammation. Interestingly, $PD-1^{-/-}$ mice cohoused with WT mice became susceptible to colitis, suggesting that resistance of $PD-1^{-/-}$ mice to colitis is dependent on their gut microbiota. 16S rRNA gene-pyrosequencing analysis showed that $PD-1^{-/-}$ mice had altered composition of gut microbiota with significant reduction in Rikenellaceae family. These altered colon bacteria of $PD-1^{-/-}$ mice induced less amount of inflammatory mediators from colon epithelial cells, including interleukin (IL)-6, and inflammatory chemokines. Taken together, our study indicates that PD-1 expression is involved in the resistance to experimental colitis through altered bacterial communities of colon.

• International Journal of Oral Biology
• /
• v.30 no.3
• /
• pp.91-98
• /
• 2005

Gamma-aminobutyric acid (GABA) is known as an inhibitory neurotransmitter in the neurons of the central nervous system. However, its detailed action mechanisms in the rostral gustatory zone of the nucleus tractus solitarius (rNTS) have not been established. The present study was aimed to investigate the distribution, role and action mechanisms of GABA in rNTS. Membrane potentials were recorded by whole cell recordings in isolated brain slices of the rat medulla. Superfusion of GABA resulted in a concentration-dependent reduction in input resistance in the neurons in rNTS. The change in input resistance ws accompanied by response to a depolarizing pulse were diminished by GABA. Superfusion of the slices with either $GABA_A$ agonist, muscimol, $GABA_B$ agonist, baclofen or $GABA_C$ agonist, TACA, decreased input resistance and reduced the nerve activity in association with membrane hyperpolarization. It is suggested that inhibitory signals playa role in sensory processing by the rNTS, in that GABA actions occur through activation of $GABA_A,\;GABA_B\;and\;GABA_C$ receptor. These results suggest that GABA has an inhibitory effect on the rNTS through an activation of $GABA_A,\;GABA_B\;and\;GABA_C$ receptors and that the GABAergic inhibition probably plays an important role in sensory processing by the rNTS.

• Journal of Korean Academy of Nursing Administration
• /
• v.18 no.1
• /
• pp.33-45
• /
• 2012

Purpose: The purpose of this study was to identify the role experience of preceptor nurses in general hospitals. Methods: Data were collected from 10 experienced preceptor nurses through in-depth interviews about their experiences. The main question was "How do you describe your experience as a preceptor in the process of role adaptation?" Qualitative data from field and transcribed notes were analyzed using Strauss & Corbin's grounded theory methodology. Results: The core category of experience in the process of role adaptation as a preceptor nurse was identified as 'being responsible to teach from beginning to end'. The participants identified five interactional strategies; 'abruptly having to take the role as a preceptor unwilling', 'difficulties in field training with variable situations', 'preceptor and new nurse with love and hate relationships', 'bring up preceptee as a child', 'redefining the concept of preceptor'. Conclusion: The results of this study provide useful information for understanding the role of preceptor nurses in general hospital who have to teach new nurses with patience and responsibility. It will be needed to establishment of preceptor's role and educational standards, and policy for their rewards by nurse manager. Additionally, making cooperative educational climate in nursing ward is important for teaching new nurse.

• Journal of Korean Academy of Nursing
• /
• v.42 no.2
• /
• pp.149-160
• /
• 2012

Purpose: The purpose of this study was to explain the role transition process to nurse case managers (NCMs) for Medical-aid beneficiaries in Korea. Methods: Fourteen NCMs were interviewed regarding their experiences of becoming proficient in the new role of case manger. Data were analyzed through the application of grounded theory. Results: 'Taking root in a barren land' was the core category explaining the role transition process of NCMs. They engaged in four stages: launching, trial and error, proficiency, and wait-and-see stages. NCMs showed not only fear but also passion for case management practice. Despite their passion and effort, NCMs went through a period of trial and error. After becoming skilled, NCMs went through a stage of wait-and-see often because of job insecurity related to temporary position or few opportunities for promotion. Factors influencing NCMs' role transition process included their understanding of client characteristics, belief in case management, and support from their colleagues and families. Conclusion: NCMs experience many challenges in the process of becoming proficient NCMs. To help with their role transition, there is a need for education programs, preceptorship programs, research on their roles and functions, and regulation for securing NCMs' employment and career stability.

• Journal of Dairy Science and Biotechnology
• /
• v.35 no.2
• /
• pp.73-83
• /
• 2017

The intestinal microbiota has increasingly been shown to have a vital role in various aspects of human health. Among the vast gut bacterial community, Bifidobacterium is a genus which dominates the intestine of healthy breast-fed infants whereas in adulthood the levels are lower but relatively stable. Evidence is increasingly accumulating which shows beneficial effects of supplementation with Bifidobacteria for the improvement of human health conditions ranging from protection against infection to various positive effects. However, Bifidobacterium has not been actively studied while consumption of probiotics has greatly been increased as functional foods in Korea. The aim of this article is to introduce various studies and excellent reviews on the role of Bifidobacteria for human health.

• Journal of Urban Science
• /
• v.7 no.2
• /
• pp.61-70
• /
• 2018

Incheon, South Korea, is a rapidly growing port city that has long held an important role in the country. While for most of its history it has been considered more of a coastal extension of Seoul, it is now trying to grow from that role and become a global city. National and local initiatives and acts have led to the Incheon Free Economic Zone (IFEZ). This large zone connects three smaller districts into one large project. The goal of the project is to assert Incheon as its own city and go beyond its role as merely a gateway to Seoul. However, as most large-scale projects go, there are multiple issues and constraints faced by the IFEZ. This paper analyzes the project and gives critique on how the project could possibly achieve its goal more quickly.

• Korean Management Science Review
• /
• v.24 no.1
• /
• pp.45-62
• /
• 2007

We aim to explain the role of corporate's 'long-term orientation' and 'asset specificity' in the process of SCM(Supply Chain Management) practices' effect on SCM performances, with empirical study about 167 manufacturing companies ail over the country. With confirmatory factor analysis and structural equation model using AMOS program, we conclude long-term orientation and asset specificity act as 'infra-structural role', rather than 'Intermediate role', in the process of SCM practice's effect on SCM performances.