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Molecular and Genomic Approaches on Nickel Toxicity and Carcinogenicity

  • Seo, Young-Rok;Kim, Byung-Joo;Ryu, Jae-Chun
    • Molecular & Cellular Toxicology
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    • v.1 no.2
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    • pp.73-77
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    • 2005
  • Nickel is the one of potent environmental, the occupational pollutants and the classified human carcinogens. It is a serious hazard to human health, when the metal exposure. To prevent human diseases from the heavy metals, it is seemingly important that understanding of how nickel exerts their toxicity and carcinogenic effect at a molecular and a genomic level. The process of nickel absorption has been demonstrated as phagocytosis, iron channel and diffusion. Uptaked nickel has been suggested to induce carcinogenesis via two pathways, a direct DNA damaging pathway and an indirect DNA damaging pathway. The former was originated from the ability of metal to generate Reactive Oxygen Species (ROS) and the reactive intermediates to interact with DNA directly. Ni-generated ROS or Nickel itself, interacts with DNAs and histones to cause DNA damage and chromosomal abnormality. The latter was originated from an indirect DNA damage via inhibition of DNA repair, or condensation and methylation of DNA. Cells have ability to protect from the genotoxic stresses by changing gene expression. Microarray analysis of the cells treated with nickel or nickel compounds, show the specific altered gene expression profile. For example, HIF-I (Hypoxia-Inducible Factor I) and p53 were well known as transcription factors, which are upregulated in response to stress and activated by both soluble and insoluble nickel compounds. The induction of these important transcription factors exert potent selective pressure and leading to cell transformation. Genes of metallothionein and family of heat shock proteins which have been known to play role in protection and damage control, were also induced by nickel treatment. These gene expressions may give us a clue to understand of the carcinogenesis mechanism of nickel. Further discussions on molecular and genomic, are need in order to understand the specific mechanism of nickel toxicity and carcinogenicity.

Sociomathematical Norms and the Culture of the Mathematics Classroom (사회수학적 규범과 수학교실문화)

  • 방정숙
    • Journal of Educational Research in Mathematics
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    • v.11 no.2
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    • pp.273-289
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    • 2001
  • Given that the culture of the mathematics classroom has been perceived as an important topic in mathematics education research, this paper deals with the construct of sociomathematical norms which can be used as an analytical tool in understanding classroom mathematical culture. This paper first reviews the theoretical foundations of the construct such as symbolic interactionism and ethnomethodology, and describes the actual classroom contexts in which social and sociomathematical norms were originally identified. This paper then provides a critical analysis of the previous studies with regard to sociomathematical norms. Whereas such studies analyze how sociomathematical norms become constituted and stabilized in the specific classroom contexts, they tend to briefly document sociomathematical norms mainly as a precursor to the detailed analysis of classroom mathematical practice. This paper reveals that the trend stems from the following two facts. First, the construct of sociomathematical norms evolved out of a classroom teaching experiment in which Cobb and his colleagues attempted to account for students' conceptual loaming as it occurred in the social context of an inquiry mathematics classroom. Second, the researchers' main role was to design instructional devices and sequences of specific mathematical content and to support the classroom teacher to foster students' mathematical learning using those sequences Given the limitations in terms of the utility of sociomathematical norms, this paper suggests the possibility of positioning the sociomathematical norms construct as more centrally reflecting the quality of students' mathematical engagement in collective classroom processes and predicting their conceptual teaming opportunities. This notion reflects the fact that the construct of sociomathematical norms is intended to capture the essence of the mathematical microculture established in a classroom community rather than its general social structure. The notion also allows us to see a teacher as promoting sociomathematical norms to the extent that she or he attends to concordance between the social processes of the classroom, and the characteristically mathematical ways of engaging. In this way, the construct of sociomathematical norms include, but in no ways needs to be limited to, teacher's mediation of mathematics discussions.

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A Study on the Legal Protection of Fashion Designs and its Possibility under the Korean Design Protection Act - Based on the Review of Cases Related to the Requirements for a Design Definition and Acquisition of Design Rights and the Judgment of Design Identity & Similarity - (패션디자인의 디자인보호법상 보호와 보호 가능성에 관한 고찰 - 디자인 성립 및 등록요건과 동일·유사 판단 기준 관련 판례 검토를 중심으로 -)

  • Cho, KyeongSook;Jung, Seok Won
    • Journal of the Korean Society of Costume
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    • v.66 no.1
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    • pp.28-41
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    • 2016
  • This paper is aimed at intensively examining the scope of legal protection for fashion designs under the Design Protection Act of Korea. For this purpose, this looked into how the Act defines the concept of design, its requirements, and the prerequisites for acquiring design rights. The study also reviewed statutory interpretations over the judgment of the identity and similarity of designs. For more practical and substantial discussions, this research utilized cases and precedents, which had relevant legal principles. This study also figured out how both the requirements for a design definition - such as merchantability, configuration, visibility, and aesthetics - and the prerequisites for acquiring design rights - like industrial applicability, novelty, and creativity - are interpreted and utilized in actual circumstances. The authors expressed their opinions regarding the criteria of judging the identity and similarity of designs, based on a study of previous cases. Previous rulings show that aesthetics of the exterior design is used as the criteria for determining whether a design is same or similar. So, two designs, which have different specific details, are deemed same or similar, if both designs show similarity in the dominant elements. This is because both designs will produce similar aesthetic qualities. However, if the dominant elements of a design are part of the public domain, and the specific details characterize the design, the latter has to be evaluated in the process. This paper examined scope of legal protection for fashion designs using relevant precedents. The study may serve as academic materials that lead to the establishment of rightful ownership in creative activities.

Safety Culture, A New Challenge to Human Factors Engineering for 21st Century

  • Lee, Yong-Hee
    • Journal of the Ergonomics Society of Korea
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    • v.35 no.6
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    • pp.473-492
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    • 2016
  • Objective: This paper discusses the recent challenges to human factors engineering due to the safety culture. Background: As incidents occurring in specific fields such as logistics, plant, energy and medical sectors in Korea, as well as in the public sectors including railway, road, aviation and shipping, are recently raised as social issues from the disaster dimension, those incidents are dealt with as man-made disasters in many cases. The trend regarding all accidents as man-made disasters has been expanded in the active perspective that the controllability of all incidents should be ensured in technology development, due to change from a fatal point of view regarding disasters as random occurrence of uncertainties in the past. Method: Man-made disasters are concluded as human errors, and safety culture stands out as a cause of human errors or a new cause item recently. Because safety culture, however, is a very comprehensive term, of which true nature is obscure, although many definitions of safety culture have been presented, the safety culture may make avoid the true nature and responsibility of an incident, or make the main player and subject obscure. Raising safety culture as a cause without presenting a specific countermeasure will be just a wisdom of hindsight. Results and Conclusion: This study reviews the fundamental discussions on "Is safety culture a task of human factors engineering?" and the existing approach carried out from various perspectives in order to seek an effective approach on the new task of safety culture in the human factors engineering field. This study discusses an engineering approach to meet a precondition that safety culture is not just an added factor through a review of the approaches in the proactive fields such as nuclear power and aviation, and the traditional approaches of human factors engineering. Application: This study especially defines the perspective of socio-technological system that has expanded the existing man-machine system, and discusses a systemic approach embracing various interactions, and several overriding tasks.

Accessibility and Usability of Library Websites to Students with Visual and Physical Disabilities in Public Universities in Kenya

  • Kiruki, Beatrice Wamaitha;Mutula, Stephen Mudogo
    • International Journal of Knowledge Content Development & Technology
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    • v.11 no.2
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    • pp.55-75
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    • 2021
  • This article examines the accessibility and usability of library websites to students with visual and physical disabilities in public universities in Kenya. The study used survey research design and adopted a mixed methods approach. Data were gathered using survey questionnaire, focus group discussions, structured interviews, and observation. The study population consisted of six public universities that had a longstanding tradition of enrolling students with disabilities. Census was used to obtain a study sample comprising of students with visual disabilities (86), students with physical disabilities (91), University Librarians (6), Personnel from Disability Mainstreaming departments (6), Systems Librarians (6) and Library Personnel who provided information services to students with disabilities (133). The Social Model of Disability and IFLA Access to Libraries for Persons with Disabilities checklist were used as conceptual and theoretical framework in the study. Study results revealed that all the libraries had library websites. However, the websites did not have disability services page or information specific to individuals with disabilities. Also a section of students with disabilities lacked awareness of the existence of library websites and e-resources available through them. Additionally, the website design posed various access challenges. The study concluded that people with disabilities were excluded from access and use of library websites in public universities. The authors recommended that library websites must contain disability services page containing information specific to persons with disabilities. Moreover, libraries should evaluate their websites to ensure compliance with W3C requirements for web content accessibility. Additionally, libraries should develop disability policy to provide guidance on provision of information services to persons with disabilities.

A Study on National Assembly Archives Management Policy through the Analysis of the National Assembly Archives Committee of Korea (국회기록관리위원회 안건 분석을 통한 국회기록관리 정책 연구)

  • Seong, Myeon-seob;Kim, Janghwan
    • Journal of Korean Society of Archives and Records Management
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    • v.21 no.4
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    • pp.201-221
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    • 2021
  • The National Assembly's archives management policy is deliberated by the National Assembly Archives Committee before it is implemented. This study tried to identify the agenda of the committee, which acts as a basis for establishing and implementing the archives management policies, and confirm whether various policies dealt with all fields of archives management. Accordingly, the committee meeting data, minutes, and related laws were checked. Focusing on the agenda, the continuity and diversity of the overall policy, whether there is a bias toward specific policy issues, and the main discussion subject of the committee about the archives management policy were analyzed. As a result of confirming the entire agenda, the agenda related to the archives management policy has been made up of reporting agendas, and as a result, it has emerged that various and in-depth discussions related to policies have not been conducted well. However, it was confirmed that the overall archives management policy was carried out with continuity for many years without focusing on a specific sector.

Comparison of Telemedicine Policy and Development of Telemedicine in Korea and China (한중 원격의료 정책비교 및 원격의료 발전 방안)

  • Taegwang Nam;Hye In Jeong;Kyeong Han Kim
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.37 no.1
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    • pp.9-13
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    • 2023
  • Due to COVID-19, the non-face-to-face era has arrived, and telemedicine has become a demand of the times in the medical community. Accordingly, this study aims to present a way to supplement Korea's telemedicine policy by comparing and analyzing domestic telemedicine policy and China's telemedicine policy, and analyzing the success factors of Chinese telemedicine. Domestic and foreign literature was explored to compare and analyze telemedicine policy cases of Korean, Chinese. Domestic and foreign national legal databases and web DBs were used, and literature were restricted between 2009 and 2022. Prior to COVID-19, the scope of telemedicine was very narrow in Korea, and only some pilot projects were operated. After COVID-19, the scope of telemedicine temporarily expanded, but no specific policies or systems were prepared. On the other hand, in the case of China, related policy institutional discussions on telemedicine have been actively conducted since the past, and accordingly, specific scope of application and related management norms and systems have been prepared. For the development of telemedicine in Korea, it is necessary to supplement the definition of telemedicine, ensure the accuracy and safety of non-face-to-face care through telemedicine, and solve the concentration phenomenon of large hospitals through limited conditions for hospital-level medical institutions.

Eating Disorders in Males (남성에 있어 식사 장애)

  • Lee, Young-Ho
    • Korean Journal of Psychosomatic Medicine
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    • v.7 no.2
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    • pp.158-173
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    • 1999
  • During the past decade, interest in and knowledge of eating disorders have increased in the medical, social science, and popular literature. Despite this advance in this field, eating disorders in males have received relatively little attention in the literature. However, in recent years, there has been increased awareness that eating disorders occurs in males, as well as females, although research and theoretical discussions concerning this subgroup still remain scare. In this review, the author highlights the clinical characteristics that distinguish male patients with eating disorders from their female counterparts. The identification of such characteristics will improve diagnosis and treatment of eating disorders in males and may increase our understanding of processes that are specific to eating disorders in both sexes.

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Mona Hatoum, Artist in Residence: A Nomad's Relationship to Community (모나 하툼, 입주 작가: 공동체와의 유목적 관계)

  • Chang, Ena Ying-Tzu;Wu, Chin-Tao
    • The Journal of Art Theory & Practice
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    • no.10
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    • pp.85-103
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    • 2010
  • Mona Hatoum and community make unlikely bedfellows. From her beginnings as a teenage exile to her maturity as an internationally celebrated artistic nomad, Hatoum defies classification within any single geographical or cultural community. Attempting, however, to locate specific points of contact between her and certain communities in terms of artist-in-residence projects in which she participated might be a particularly fruitful way of circumventing her notorious critical resistance to identity and her refusal of homogeneity. This paper starts with Miwon Kwon's critique of contemporary practices in community-based art, which locate an essentialising force that isolates a single point of commonality and overlooks authentic differences. It then turns to Jean-Luc Nancy's reconceptualization of community as 'unworked' and 'being-in-common' to provide analytical tools for avoiding the dangers of essentialism. By examining the three residencies that Hatoum accepted in the mid-1990s in the light of Nancy's observations and theories, and by bringing the idea of artistic nomadism and that of community into juxtaposition, we hope to show that Hatoum succeeds in finding an equilibrium between art and community, and that this sheds new light on the issues raised in recent discussions on such relationship.

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A Study on the Readjustment Plans for Solution of Conflict in Gaeseong Complex - Centering around the Inter-Korean Commercial Arbitration System (개성공단 분쟁해결 제도 정비방안 - 남북상사중재제도를 중심으로)

  • Hwangbo, Hyun
    • Journal of Arbitration Studies
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    • v.29 no.4
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    • pp.3-31
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    • 2019
  • In order to achieve full-scale economic cooperation between North Korea and South Korea, the Gaesong Industrial Complex should reopen first. In this case, the Inter-Korean commercial arbitration system should be clearly established to effectively resolve the disputes arising in the special economic zones of the Gaesong Industrial Complex. Even though the Inter-Korean Investment Security Agreement, the Agreement on the Resolution of Commercial Disputes between North Korea and South Korea, the Agreement on the Formation and Operation of the Inter-Korean Commercial Arbitration Committee, and the Agreement on the Formation and Operation of the Inter-Korean Commercial Arbitration Committee in the Gaesong Industrial District are in place, specific arbitration procedure is not concretely agreed upon and realized between the two Koreas. Therefore, the realization of commercial arbitration between them led by the Ministry of Unification or the government should be accomplished. In addition, it is necessary to consider the administrative trial or administrative litigation system in order to deal with administrative disputes that are not subject to commercial arbitration. Lastly, discussions on legal integration between the two Koreas should continue, focusing on the special economic zone of the Gaesong Industrial Complex, in order to prevent integration from being hindered by a different culture for a long time.