• 한국수학교육학회지시리즈A:수학교육
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• 제52권3호
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• pp.271-301
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• 2013

The purpose of the study was to investigate how students generalize and prove the factoring of $x^n-1$ using a Computer Algebra System application and the role of CAS in this process. The theoretical framework consists of the anthropological and the instrumental approach. In particular, the basis of the Task-Technique-Theorization(T-T-T) frame adapted form Chevallard's anthropological approach of Didactics is utilized. We found that Technique-Theorization emerges in mutual interaction between paper-and-pencil techniques and computer algebra techniques. And this interaction led to the students' theoretical reflection and conceptual understanding. In this process, we could identify three epistemic role of CAS : the role of checking the result, the role of cognitive stimulation and the role of extending thinking. Therefore CAS plays on a epistemic role of checking the result of a task, stimulating the student' cognition and extending their thinking as well as pragmatic role of producing the result of a input.

• 한국학교수학회논문집
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• 제16권4호
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• pp.821-840
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• 2013

중학교 기하에서 등장하는 도형의 정의는 그 모양에서 시각적으로 확인할 수 있는 단순한 용어의 뜻으로만 생각하기 쉽다. 그러나 도형의 정의에 대한 낮은 이해도는 이와 같은 도형 정의에 대한 도구적 이해의 한계를 보여주고 있다. 이 연구는 영재중학생들을 대상으로, Freudenthal이 주장했던 도형 성질의 논리적 조직화에 의한 정의의 재발명과정을 구체적으로 실행하여 분석하였다. 그 결과 영재 학생 중 상당수가 도형 성질의 논리적 조직화 경험을 통하여, 도형을 왜 그렇게 정의하는 것인가, 또 다른 성질로는 정의할 수 없는가와 같은 도형 정의의 관계적 이해와 관련된 질문에 대해 깊이 이해하고 있음을 확인할 수 있었다. 이 연구에서 분석한 논리적 조직화에 의한 정의의 재발명과정은 중학교 기하교육의 문제를 반성하고 새로운 대안을 모색하는데 도움이 될 수 있을 것이다.

• 대한구순구개열학회지
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• 제11권1호
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• pp.13-22
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• 2008

Velopharyngeal insufficiency(VPI), characterized by hypernasal resonance and nasal air emission, is a speech disorder that can significantly compromise speech intelligibility. Cleft palate, previously repaired cleft palate and submucous cleft palate are associated with VPI. Less commonly, patients may acquire it after adenoidectomy with or without tonsillectomy or as a result of neuromuscular dysfunction. Comprehensive evaluation by a VPI team includes medical assessment focusing on airway obstructive symptoms, perceptual speech analysis, MRI and instrumental assessment. Options for intervention include speech therapy, intraoral prosthetic devices and surgery. Surgical methods can be categorized as palatal, palatopharyngeal or pharyngeal procedures. Each surgical approach has its strengths and limitations. Oro-maxillofacial surgeons are increasingly involved in the referral, evaluation, and treatment of velopharyngeal function. Therefore, understanding of physiology, anatomic structures, evaluation and treatment protocols in VPI is very important. This article presents protocol for evaluation of velopharyngeal function with a focus on indications for surgical interventions.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2010년도 추계학술대회
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• pp.363-366
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• 2010

최근 소셜게임은 지인과의 관계에 중점을 두면서 여성들을 게임시장으로 끌어내는 등 이용자층 확대에 큰 기여를 하고 있다. 그래서 소셜 게임에 대한 관심과 산업적 확산이 폭발적인 데 반하여 소셜 게임에 대한 학술적인 연구가 미흡하다. 본 연구목적은 최근 성공한 소셜 게임의 성공요인을 살펴보고 이에 대한 개발 지침을 마련하는데 있다. 소셜게임 가운데 상업적으로 성공하고 최고의 이용자 수를 갖고 있는 대표적인 게임인 팜빌을 대상으로 핵심 성공요인을 고찰 하였다. 그 결과 사회적 교류, 간단한 인터페이스, 비동기 방식, 도구적 합리성 요인이 도출되었다. 본 연구를 통해 성공적인 소셜 게임을 개발하기 위한 지침으로 활용 될 것으로 기대된다.

• Journal of Korea Trade
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• 제25권8호
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• pp.25-44
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• 2021

Purpose - This research aims to provide empirical evidence that highlights the importance of imported intermediate goods in long-term economic growth. To this end, this paper develops an index that measures the productivity gains associated with a country's intermediate goods imports using highly disaggregated trade data. Design/methodology - The basic hypothesis is that countries sourcing higher-productivity (or higher-quality) inputs from developed economies derive a larger benefit from foreign R&D. To explore this hypothesis, standard cross-country growth regressions are performed using the highly disaggregated data from the United Nations (UN) Commodity Trade Statistics Database (COMTRADE). To address the endogeneity issue, I apply an instrumental variable (IV) approach. Findings - The results of this study demonstrate that the index predicts subsequent economic growth in middle- and low-income countries. This finding is consistent with previous studies that have argued that developing countries can achieve substantial productivity gains by importing intermediate inputs from developed countries. By contrast, there is no evidence of a significant association between the index and economic growth in high-income countries. Originality/value - This paper contributes to our understanding of the causal relationship between international trade and economic growth. From an economic policy perspective, the results suggest that developing countries with limited technology endowment can boost growth from input-tariff liberalization.

• 패션비즈니스
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• 제27권2호
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• pp.108-123
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• 2023

Recent increase of eco-conscious trends and pleasure from Do It Yourself (DIY) activities have led to a surge in sales of package products bundling together clothing patterns and raw materials. However, a well-structured market system is yet to be established. We surveyed 460 women with sewing as a hobby who had purchased these DIY clothing pattern packages. The survey revealed that majority of respondents had their hobby for over five years. Choosing the right fabric to match clothing patterns presented a common challenge. Most participants owned a sewing machine and an overlocker, with price being the primary concern when purchasing a package. For guidance during the sewing process, participants preferred print materials featuring real-life images. Those with less sewing experience leaned towards video tutorials. Items of interest or those commonly created included blouses, shirts, and dresses. Desire for further learning in sewing and pattern-making was prominent, with a clear preference for online classes. Several strategies are recommended to enhance the appeal of DIY clothing package products, including broadening range of packages that incorporate fabric, offering supplementary educational resources to improve users' skills, implementing affordable pricing structures, supplying comprehensive creation guidelines, and making available design modification guides. These considerations could significantly boost customer satisfaction. This research intends to lay groundwork for understanding DIY clothing creation market, ultimately fostering production of highly desirable products. Insights of this study will prove instrumental in refining product development and devising effective marketing tactics, leading to a more rewarding consumer experience.

• 영어영문학
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• 제57권3호
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• pp.495-513
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• 2011

Murdoch's novel, The Black Prince, is not, as most critics have suggested, an autobiographical novel. It is about the inner life or rather trauma of Bradley Pearson, an artist who repeatedly dreams about a shabby paper shop which used to be run by his "unsuccessful" parents. In this respect, Freudian concept of trauma is helpful since it can explain Bradley's present repetition of his past traumatic experience, while allowing us to understand the nature of his trauma which reveals itself not only through his repeated nightmares but also through the women who are represented as diverse versions of his mother, the origin of Bradley's trauma. Caruth's concept of traumatic awakening and traumatic survival is also instrumental in understanding the nature of the traumatic experience which Bradley undergoes in this novel. Induced by Loxias's address, Bradley makes a confession of "the sins," which makes possible his traumatic survival as well as traumatic awakening, which is transmitted not only to Loxias but also to us the readers. In this sense, the significance of Bradley's awakening is not confined to his past only, but becomes a matter of a social dimension. The meaning of Bradley's writing lies in this fact.

• 셀메드
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• 제14권2호
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• pp.4.1-4.4
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• 2024

The development of clinical reasoning, which is the basis of medical education, is of great importance in medical universities. One of the founders of modern structural clinical reasoning, based on the knowledge of pathological physiology, is the inventor of the stethoscope Rene Laennec (1781-1826). He described the pioneering experience of clinical reasoning in the pages of his treatise A Treatise on the Diseases of the Chest and on Mediate Auscultation, which is of lasting value, since every rookie physicians in his professional development goes through the path of Laennec. Laennec's practice is of great importance for novice physicians since Laennec's treatise contains a diagnostic analysis of the most common clinical cases. Each such analysis demonstrates the algorithm of clinical reasoning. The purpose of this study was to analyze the approaches of clinical reasoning by René Laennec, which made it possible to identify two basic principles. Laennec's diagnostic reasoning involved two principles: pathogenetic analysis of clinical manifestations and a syndrome-based approach to differential diagnosis. These principles help distinguish between diseases with similar symptoms and physical findings are used to demonstrate the practical application of syndrome-based differential diagnosis. These principles can be easily mastered by understanding the pathogenesis of clinical manifestations. Thanks to the pathogenetic basis, the principles of clinical reasoning of Rene Laennec are universal and applicable to the analysis of any signs of the disease: not only physical but also laboratory and instrumental.

• 한국학교보건학회지
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• 제8권2호
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• pp.277-291
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• 1995

The study was designed to grasp the mental health of junior college students and identify the relation between mental health and social support. The subjects for this study were 781 sophomores attending T junior college in Taegu. The data were collected through questionnaire during the period from september 10,1993 to september 24, 1993. The results of this can be summarized as follows: In mental health the average mark was 1.94 on the basis of 5 marks. Those whose mark was more than 75% (low) had Depression(8.7%),Obsessive compulsive reaction(5.2%) Anxiety(3.6%). In social support, the average mark was 3.03 on the basis of 4 marks, which showed comparatively high support; relationship with friends was 75.4%, companionship was 75.4%, and mutual understanding was 72.3%. Many students got more than 75% in total marks. In the state of mental health, there was a significant difference depending on sex, total income, the character and the attitude toward his parents. There is also an unusual difference in social support depending on the major subjects, the character, the problem at present and the attitude toward his parents. In mental health, both male and female students got higher marks in Depression, Obsessive compulsive reaction than in any other item. In social support level all students had a high support in the relationship with friends and mutual understanding. Those who are affectionate to and dependent on their parents had a tendency to have better mental health. The simple correlation modules between social support mark and mental health one was -0.5555 and the partial correlation modules of controlling sex, age, growth place was -0.5557. There was little difference between them. In mental health items Interpersonal sensitivity was highest correlated with social support and Somatinization was lowest correlated. There was a significant correlation between mental health and social support: the higher social support were, the better mental health was. In conclusion, the study showed that the relationship between the social support and the mental health level revealed a significant correlation. In social support Expressive support (companionship support, mutual understanding support) showed a higher degree of support than instrumental support(monetary support, demand support). Therefore, in the guidance of students, it is necessary to expand expressive support considering these respects. Further multidimensional study is needed on how to improve the mental health of junior students through the social support.

• 유통과학연구
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• 제10권8호
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• pp.25-34
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• 2012

Understanding customer' lifestyles important for banks because it will guide in determining marketing policies, such as services, pricing, service delivery and promotion decisions. From the customer' lifestyle, banks will know what kind of customers' attitudes, interests and opinions, so they also will understand what the costumer' needs and what services needed by them. For Islamic banks, customers understanding are important because, nowadays, the competition of the banks is not only with other Islamic banks but also with the well-established conventional banks offering Islamic products or services The aims of this research paper are to describe what factors underline the customer's lifestyle of both Islamic and conventional bank, to segment the bank customers based on their lifestyles and investigate the profile of each segments, to compare the characteristics of the segments, and to identify marketing policies based on the characteristics. The population of the study is banking customers in Indonesia, in which the researchers have used judgment sampling as sample selection. There were 186 customers of Islamic banks and 244 customers of conventional bank as respondents in this study. Statistical methods employed were exploratory factor analysis and cluster analysis. The finding of the study shows that there are twelve factor underlining the customers' lifestyle, namely: factor of fashion conscious, internet usage, sports spectator, financial and technology optimism, price sensitivity, independent, compulsive housekeeper, new brand tryer community activities, opinion leader, credit usage, and homebody. In addition, for Islamic banking, there are two market segments, namely fashionable-independent and innovative-social segment. Based on the lifestyle characteristics, the first segment has higher level in factor of fashion conscious, homebody, independent, optimism and price conscious, which is therefore called fashionable-independent segment. On the other hand, the second cluster has higher level in factor of new brand tryer, community minded, sport spectator, credit user, internet usage, opinion leader, and compulsive housekeeper, which is therefore called the innovative-social segment. Furthermore, for conventional banking, there are also two segments, namely persuasive-optimistic and sensitive-independent segment. The first segment has higher level on some factors, namely: opinion leader, optimism, internet usage rate, credit usage level, sport spectator, and new brand tryer. On the other hand, the second cluster is characterized by higher level in factor of price conscious, confidence, community minded, homebody, fashion conscious, and compulsive housekeeper. Managerial implications for the management of Islamic banks could be identified in this study as follows. Firstly, the twelve lifestyle factors of this study could be an alternative view in observe Islamic banking customers. The domination of both the fashionable conscious and the internet usage factor show that the aspects are quite instrumental in perceiving the customer' lifestyles, in which reflects the importance of these two aspects to customers. Secondly, in serving their customers, Islamic banks need to understand the customer lifestyle, in which the lifestyle segments found in this study provide a guide of how their needs were reflected. Finally, by understanding the segments and the characteristics each segment of the conventional banks, Islamic banks could adjust their marketing strategies differently from the conventional banks.