• 대한수의사회지
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• 제40권7호
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• pp.665-671
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• 2004

• 과학교육연구지
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• 제32권2호
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• pp.103-120
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• 2008

이 연구의 목적은 중 고등학교 과학교사와 학생들 사이의 중요 실험 목적에 대한 인식을 조사하고, 교사와 학생들의 인식이 서로 일치하는지를 알아보는 것이다. 연구 목적을 위해, 과학교사용과 학생용 설문지를 개발한 후 각각 중학교 교사 108명, 중학생 109명, 고등학교 교사 104명, 고등학생 110명을 대상으로 설문결과를 수집하였다. 설문 결과는 절대순위 응답분석 기법을 통해 처리되고 비교되었다. 분석 결과, 중요하게 생각하는 실험목적에 대하여 중학교 과학교사들과 고등학교 과학교사들은 과학탐구능력을 선택한 반면, 중학생들과 고등학생들은 창의적 문제해결능력을 선택하였다. 또한 응답빈도의 집중경향도 교사들은 과학탐구능력이라는 특정 항목에 집중적으로 분포한 반면, 학생들은 창의적 문제해결능력에 집중된 경향이 교사들에 비해 비교적 낮은 것으로 나타났다. 중 고등학교 교사들의 실험 목적에 대한 인식은 학생들의 인식과 달랐고, 이를 통해 교사와 학생의 실험 목적에 대한 인식에 차이가 있음을 확인하였다.

• Clinical Endoscopy
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• 제55권2호
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• pp.240-247
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• 2022

Background/Aims: Few studies have measured the accuracy of prognostic scores for upper gastrointestinal bleeding (UGIB) among cancer patients. Thereby, we compared the prognostic scores for predicting major outcomes in cancer patients with UGIB. Secondarily, we developed a new model to detect patients who might require hemostatic care. Methods: A prospective research was performed in a tertiary hospital by enrolling cancer patients admitted with UGIB. Clinical and endoscopic findings were obtained through a prospective database. Multiple logistic regression analysis was performed to gauge the power of each score. Results: From April 2015 to May 2016, 243 patients met the inclusion criteria. The AIMS65 (area under the curve [AUC] 0.85) best predicted intensive care unit admission, while the Glasgow-Blatchford score best predicted blood transfusion (AUC 0.82) and the low-risk group (AUC 0.92). All scores failed to predict hemostatic therapy and rebleeding. The new score was superior (AUC 0.74) in predicting hemostatic therapy. The AIMS65 (AUC 0.84) best predicted in-hospital mortality. Conclusions: The scoring systems for prognostication were validated in the group of cancer patients with UGIB. A new score was developed to predict hemostatic therapy. Following this result, future prospective research should be performed to validate the new score.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제7권4호
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• pp.878-894
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• 2013

Secure multimedia multicast applications involve group communications where group membership requires secured dynamic key generation and updating operations. Such operations usually consume high computation time and therefore designing a key distribution protocol with reduced computation time is necessary for multicast applications. In this paper, we propose a new key distribution protocol that focuses on two aspects. The first one aims at the reduction of computation complexity by performing lesser numbers of multiplication operations using a ternary-tree approach during key updating. Moreover, it aims to optimize the number of multiplication operations by using the existing Karatsuba divide and conquer approach for fast multiplication. The second aspect aims at reducing the amount of information communicated to the group members during the update operations in the key content. The proposed algorithm has been evaluated based on computation and communication complexity and a comparative performance analysis of various key distribution protocols is provided. Moreover, it has been observed that the proposed algorithm reduces the computation and communication time significantly.

• 한국대기환경학회지
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• 제31권6호
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• pp.497-507
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• 2015

Real-time and quantitative measurement of the chemical composition in ambient aerosols represents one of the most challenging problems in the field of atmospheric chemistry. In the present study, time resolved application by Aerosol-into-Mist System (AIMS) following by total organic carbon analyzer (TOC) has been developed. The unique aspect of the combination of these two techniques is to provide quantifiable water soluble organic carbon (WSOC) information of particle-phase organic compounds on timescales of minutes. We also demonstrated that the application of the AIMS method is not limited to water-soluble organic carbon but inorganic ion compounds. By correlating the volume concentrations by optical particle sizer (OPS), water soluble organic carbon can be highly related to the secondary organic products. AIMS-TOC method can be potentially applied to probe the formation and evolution mechanism of a variety of SOA behaviors in ambient air.

• 복식
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• 제61권4호
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• pp.24-37
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• 2011

This study aims to figure out any possible expanded expression methods and diverse formative effects in fashion design by recognizing the importance of objects that suggest new paradigms as a means of expressing aesthetic consciousness in contemporary fashion and analogizing the formative characteristics of objects used in fashion and their significance. Accordingly, the study focuses on analyzing and interpreting objects introduced to fashion design with a formative view by substituting the concept of an object that has taken an important position in the contemporary arts for fashion. This study further aims to examine the concept of objects by trend and their characteristics within a syntactical structure and come up with a standard for classification of objects and a framework of analysis from cubism in the early 20th century when the concept of an object began to appear in arts to Dadaism, Surrealism, Pop art, Land art, Environmental art and the present time. Finally, the study aims to examine the status of objects in fashion and the relationships between fashion and objects through analyses on fashion objects and to suggest new perspectives and approaches to interpret the contemporary fashion in the 21st century.

• 대한수학교육학회지:수학교육학연구
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• 제8권2호
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• pp.405-423
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• 1998

This study aims to reflect the origin and the meaning of open education and to derive pedagogical principles for open mathematics education. Open education originates from Socrates who was the founder of discovery learning and has been developed by Locke, Rousseau, Froebel, Montessori, Dewey, Piaget, and so on. Thus open education is based on Humanism and Piaget's psychology. The aim of open education consists in developing potentials of children. The characteristics of open education can be summarized as follows: open curriculum, individualized instruction, diverse group organization and various instruction models, rich educational environment, and cooperative interaction based on open human relations. After considering the aims and the characteristics of open education, this study tries to suggest the aims and the directions for open mathematics education according to the philosophy of open education. The aim of open mathematics education is to develop mathematical potentials of children and to foster their mathematical appreciative view. In order to realize the aim, this study suggests five pedagogical principles. Firstly, the mathematical knowledge of children should be integrated by structurizing. Secondly, exploration activities for all kinds of real and concrete situations should be starting points of mathematics learning for the children. Thirdly, open-ended problem approach can facilitate children's diverse ways of thinking. Fourthly, the mathematics educators should emphasize the social interaction through small-group cooperation. Finally, rich educational environment should be provided by offering concrete and diverse material. In order to make open mathematics education effective, some considerations are required in terms of open mathematics curriculum, integrated construction of textbooks, autonomy of teachers and inquiry into children's mathematical capability.

• 한국통신학회논문지
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• 제36권12B호
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• pp.1680-1685
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• 2011

본 논문에서는 동물의 표피와 근육질 사이 체내에 주입할 수 있는 UHF 대역의 RFID 태그를 개발하였으며, 그 태그를 사용한 동물정보관리 시스템을 개발 하였다. 일반 상용 태그는 동물의 체내에서 동작하지 않으므로 체지방과 근육의 유전율을 고려하여서 태그를 설계 하였다. 태그는 피부 밑에 삽입이 쉽도록 끝이 뾰족하게 그리고 얇게 설계되었다. 태그의 성능을 동물의 근육과 표피 안에서 검증하였다. 동물정보관리시스템은 개발된 태그를 사용하여 동물들의 종류, 병력, 주인의 정보, 주소지 등을 관리 할 수 있다. 개발된 프로그램과 태그는 군견이나 경찰견 관리용으로 사용이 가능하다.

• 동의신경정신과학회지
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• 제30권2호
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• pp.107-118
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• 2019

Objectives: The objective of this study is to report the effectiveness of Korean medicine therapy on Psychologic tremor patients with MCVT. Methods: Korean medicine therapy including MCVT, herb, acupuncture, and psychotherapy are applied to psychologic tremor patients. Vas and AIMS are used as assessment tools to evaluate the effects of therapy. MCVT is a traditional Korean medicine technique usually for chronic diseases. Similarly, autogenic training by J.H.Schultz and Giungoroen-therapy was conducted as psychotherapy. Results: In case 1, the patient lost all symptoms from vas10 to vas0, while in case 2, symptoms of the patient decreased from vas10 to vas3. Additionally, there was a significant decrease in the AIMS measurement score for both patients. Psychotherapy helped to reduce depression and anxiety. Conclusions: Psychologic tremor can be treated using Korean traditional medicine such as MCVT, Sosiho-tang and psychotherapy.

• Clinical and Experimental Emergency Medicine
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• 제5권4호
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• pp.219-229
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• 2018

Objective We compared the predictive value of the National Early Warning Score+Lactate (NEWS+L) score with those of other parameters such as the pre-endoscopic Rockall score (PERS), Glasgow-Blatchford score (GBS), and albumin, international normalized ratio, altered mental status, systolic blood pressure, age older than 65 years score (AIMS65) among patients with upper gastrointestinal bleeding (UGIB). Methods We conducted a retrospective study of patients with UGIB during 2 consecutive years. The primary outcome was the composite of in-hospital death, intensive care unit admission, and the need for ${\geq}5$ packs of red blood cell transfusion within 24 hours. Results Among 530 included patients, the composite outcome occurred in 59 patients (19 inhospital deaths, 13 intensive care unit admissions, and 40 transfusions of ${\geq}5$ packs of red blood cells within 24 hours). The area under the receiver operating characteristic curve of the NEWS+L score for the composite outcome was 0.76 (95% confidence interval, 0.70 to 0.82), which demonstrated a significant difference compared to PERS (0.66, 0.59-0.73, P=0.004), but not to GBS (0.70, 0.64-0.77, P=0.141) and AIMS65 (0.76, 0.70-0.83, P=0.999). The sensitivities of NEWS+L scores of 3 (n=34, 6.4%), 4 (n=92, 17.4%), and 5 (n=171, 32.3%) were 100%, 98.3%, and 96.6%, respectively, while the sensitivity of an AIMS65 score of 0 (n=159, 30.0%) was 91.5%. Conclusion The NEWS+L score showed better discriminative performance than the PERS and comparable discriminative performance to the GBS and AIMS65. The NEWS+L score may be used to identify low-risk patients among patients with UGIB.