• Journal of The Korean Association For Science Education
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• v.27 no.8
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• pp.699-710
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• 2007

During the last two decades, many researchers have attempted to understand pedagogical content knowledge (PCK). Now it is time to think about how to apply the theoretical aspects of PCK to practice. In an attempt to address this issue, it is indispensable to review the existing literature on teachers' knowledge bases and PCK. Therefore, the purposes of this paper are to look at how the concept of PCK has been developed and extended over the past two decades as well as to provide a shared understanding of PCK for the practical use of this concept in teacher education programs. The paper begins with a discussion of various models of teachers' knowledge as conceptualized by several renowned researchers, moves on to a review of existing research focusing on the knowledge of science teachers, then examines the literature on PCK as a critical part of teachers' professional knowledge, and finally concludes with an integrated operational definition of PCK that can be employed into designing teacher education programs.

• Journal of the Korean Solar Energy Society
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• v.31 no.3
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• pp.57-66
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• 2011

A Photovoltaic/Thermal(PVT) solar system consists of PV module and thermal absorber plate which convert the absorbed solar radiation into electricity and heat. Meaningful researches and development (R&D) on the PVT technologies have been performed since the 1970s. This paper presents a review of the previous works covering the various types of PVT and their performance analysis in terms of electrical and thermal efficiency. This review compares electrical and thermal efficiency of the different types of PVT collectors and analyzes the parameters affecting PVT performance. Based on the literature review, box channel type PVT with unglazed, or flat plate PVT with glazed have the highest efficiency among them. From the literature review, R&D should be carried out aiming at improving their overall electrical and thermal efficiency, cutting down the cost, and making them more competitive in the energy consumption market.

• 한국태양에너지학회:학술대회논문집
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• 2011.04a
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• pp.250-255
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• 2011

A Photovoltaic/Thermal(PVT) solar system consists of PV module and thermal absorber plate which convert the absorbed solar radiation into electricity and heat. Meaningful researches and development (R&D) on the PVT technologies have been performed since the 1970s. This paper presents a review of the previous works covering the various types of PVT and their performance analysis in terms of electrical and thermal efficiency. This review compares electrical and thermal efficiency of the different types of PVT collectors and analyzes the parameters affecting PVT performance. Based on the literature review, box charmel type PVT with unglazed, or flat plate PVT with glazed have the highest efficiency among them. From the literature review, R&D should be carried out aiming at improving their overall electrical and thermal efficiency and cutting down the cost, making them more competitive in the energy consumption market.

• Anatomy and Cell Biology
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• v.56 no.1
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• pp.9-15
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• 2023

An accessory submandibular gland is a rare variation. As such, there is limited literature regarding the embryology, anatomy, variations, clinical imaging, and pathology of the accessory submandibular gland. In this article, we review the existing literature on the accessory submandibular gland from clinical and anatomical perspectives. The goal of this review is to provide comprehensive knowledge of this variation which can be useful for oral and maxillofacial/head and neck surgeons, radiologists, and anatomists. Within this review, the embryologic origin as well as the anatomy of the accessory submandibular gland is detailed. Several imaging modalities which can be used to visualize the accessory submandibular gland are outlined as well as its variations. Lastly, this review investigates several reported clinical considerations regarding the accessory submandibular gland including sialoliths, Wharton's duct obstruction, and pleomorphic adenoma.

• Journal of Biomedical Engineering Research
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• v.41 no.1
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• pp.35-41
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• 2020

In this study, we examined whether the systematic literature review method used in the field of evidence-based medicine could be used for post-market clinical evaluation of medical devices by modifying them to fit the regulatory perspective of medical devices in Korea. For this purpose, systematic literature review was modified and applied to conduct a clinical literature survey on the ophthalmic electrosurgical system(Trabectome^®, NeoMediX Corp) used for the treatment of glaucoma. A total of six documents were finally selected, and clinical safety and efficacy information on the indications of the ophthalmic electrosurgical system were effectively presented. In addition, general safety information and unexpected safety information could be distinguished through comparison with medical device adverse event reporting cases. The method used in this study is expected to be used in various ways throughout post-market medical device safety management system and for the purpose of regulation improvement, especially in the field of ophthalmic electrosurgical system.

• Physical Therapy Korea
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• v.29 no.3
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• pp.171-179
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• 2022

Background: The application of Kinesio tape (KT) has become an alternative treatment for the reduction of edema owing to its distinct characteristics that mimic skin behavior. Although many studies have found that KT application has a positive effect on edema related to breast cancer and rehabilitation following mandibular third molar surgery, there is little evidence to support the use of KT for musculoskeletal injuries. Objects: The purpose of this study was to review the literature related to KT application for reducing edema caused by musculoskeletal disorders. Methods: A literature search (July 2022) was performed on PubMed for articles published between January 2012 and June 2022. The following keywords were used: "Kinesio taping," "Kinesio tape," "swelling," and "edema," with different combinations and derivations. Only articles available in English were included in this study. Results: Among 68 identified studies, seven met our search strategy and criteria and were included in the literature review. Five of these studies investigated musculoskeletal disorders of the knee joint; two of them reported that KT application had a positive effect on edema measured using perimetry following total knee replacement and anterior cruciate ligament reconstruction. However, the KT application did not improve swelling in patients with acute lateral ankle sprains. Pediatric patients with acute proximal phalangeal joint sprain experienced a more significant improvement in the reduction of swelling than the group using a splint. Conclusion: This literature review found discrepant evidence to support using KT for edema control in musculoskeletal disorders. Further research is needed to determine the effectiveness of KT for controlling edema following musculoskeletal injuries.

• Journal of East-West Nursing Research
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• v.4 no.1
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• pp.44-56
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• 1999

Substance abuse, which leads to juvenile delinquency and other troubles, is one of the most serious problems for the adolescents today. The frequency of the adolescent substance abuse has been growing every year, but the effective methods to cope with the problem have not been well developed yet. The purpose of this study is to investigate into the more favorable ways by review the literature on substance abuse systematically. This study is a research based on the overview of the literature so that we may identify the present conditions of the adolescent substance abuse, its types, its problems and the nursing intervention. This literature review results in the following suggestions. Substance abuse is prevalent among the adolescents enough to be considered as one of our society's major problems. So policy makers as well as government and private agencies should recognize the seriousness of substance abuse and associated problem behaviors. Moreover, it is necessary that the adolescents should remind themselves of the seriousness of substance abuse. Once the health professionals notice the adolescents' involvement in substance abuse, they need to approach them with the parental concern in order to establish rapport with them by using tactful questions that can assess their feelings, behaviors, and experiences. The exploratory study is prerequisite to the solution of that problem. The development of the wholesome recreational programs and culture for the adolescents is also essential to prevent them from being involved in substance abuse.

• Journal of Korea Society of Digital Industry and Information Management
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• v.9 no.1
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• pp.33-42
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• 2013

Mobile voting has been considered as a promising technology, but it has not been used widely or popular enough in the world. We think this situation is caused by immature technologies of mobile voting and no agreement among people in our society. In this paper, we reviewed literature on electronic voting systems in order to find out technical issues on mobile voting system, and we also surveyed people's opinions via the Internet in order to understand what they worry about mobile voting. From the literature review, we understand that the existing electronic voting systems did not consider security, robustness, and reliability issues enough. From the survey, we also get to know that people worry about "manipulation of the result of mobile voting" mostly. Our work can help researchers on mobile voting to consider the ways or technologies that convince people of the reliability of mobile voting.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• v.45 no.6
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• pp.302-308
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• 2019

Fractures of the styloid process of the temporal bone may occur with or without an obvious relation to trauma. The incidence of either isolated styloid process fracture or in combination with mandibular fractures is rare, and such occurrences are often misdiagnosed or neglected. A fractured styloid when displaced may impinge on adjacent vital structures, leading to neurological or vascular symptoms that vary according to the anatomical structure compressed. Styloid process fractures associated with atlas/C1 fractures have also been rarely reported in the literature. In this review of literature, the majority of patients was treated conservatively, as few demonstrated the necessity of surgical intervention. There is a definitive need for a protocol to recognize and classify styloid fractures to plan for further treatment. The aim of this review was to achieve a comprehensive understanding of all types of styloid fractures, determine the clinical severity of symptoms, and to consider management and prognosis. In addition, a new classification of cervico-stylo-mandibular fractures is proposed based on important evidence in the literature regarding clinical and radiographic factors that might influence the treatment and prognosis of such fractures.

• Journal of Korean Society for Quality Management
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• v.47 no.2
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• pp.381-395
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• 2019

Purpose: This study aims to conduct a systematic literature review to suitably identify wide and specific issues and topics on service quality in supply chain. Methods: This study is to investigate service quality in supply chain research using a systematic literature review methodology. In order to extract influential journals and papers, we used the SJR impact factor provided by the SCOPUS database. The collected 169 papers were analyzed using bibliometric analysis, citation analysis as well as keywords network. Results: We conducted a bibliometric analysis to identify top authors contributing to service quality in supply chain and their issues, and further examined important keywords and new emerging keywords. In addition, we extracted five influential papers by PageRank to clarify critical issues and divided into five clusters to identify topics of service quality in supply chain by using network-based approach. In order to examine comprehensive issues and topics of service quality in supply chain, we constructed a keyword network to observe difference in the classification of important keywords across network centrality measures. Conclusion: Our study reviewed literature on service quality in supply chain and explored the future directions and trends of service quality in supply chain.