• Title/Summary/Keyword: alternative school

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Methodology for Describing Different Phase States of Molecular Nitrogen

  • Cho, Haeng Muk;Kudryavtsev, I.N.;Kramskoy, A.V.
    • Journal of Energy Engineering
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    • v.23 no.4
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    • pp.215-222
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    • 2014
  • A theory-based methodology for describing the thermodynamic properties of molecular nitrogen is presented. The results obtained indicate a successful application of a fully consistent statistical method for the description of a molecular system in different phase states. The method employs a density of states equation for solid nitrogen and a perturbation potential for gaseous and liquid nitrogen. The main characteristics of the calculation method include the need for a minimal number of initial data and the absence of fitting parameters. The adequacy of the physical model that is the basis for the method allows a description of existing experimental data and the peculiarities of the thermodynamic properties.

An Analysis on Function Chapters in the Middle School for an Alternative Description in view of Practical Objectives (실용성 목표 관점에서의 중학교 함수 단원 분석과 그에 따른 개선 방안)

  • Lee, Young-Ha;Jeong, Ju-Yon
    • The Mathematical Education
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    • v.47 no.3
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    • pp.239-259
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    • 2008
  • This paper is to find and to suggest alternative ways of description on function chapters in the middle school mathematics so that the descriptions be more closely related to daily life. The research has two phases: one for belief on the usefulness, the other for cognitive ability to solve the practical problems. Results are as following. 1. Most descriptions of corresponding chapters have emphases on the usefulness of functions so as to enhance beliefs on the use of functions. 2. Most practical functions contain expressions of large constant term and large coefficients in magnitude while those are not in the descriptions of tektbooks, especially in case of using ruled papers. 3. For quadratic functions, most students do not detect the degree of the function from the data presented by pairs of values of x and y. And those are not dealt with in most of textbooks, which are given in the MIC textbook.

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Vacuum-Assisted Closure Therapy as an Alternative Treatment of Subcutaneous Emphysema

  • Byun, Chun Sung;Choi, Jin Ho;Hwang, Jung Joo;Kim, Do Hyung;Cho, Hyun Min;Seok, June Pill
    • Journal of Chest Surgery
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    • v.46 no.5
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    • pp.383-387
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    • 2013
  • Vacuum-assisted closure therapy is an alternative method for a massive subcutaneous emphysema treatment. It is easily applicable and shows rapid effectiveness in massive subcutaneous emphysema, intractable with chest tube drainage.

A Study on the Teaching of Negotiation in the Law Schools of the United States (미국 로스쿨에서의 협상교육 방법론에 관한 연구)

  • Yi, Lo-Ri
    • Journal of Arbitration Studies
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    • v.23 no.2
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    • pp.115-139
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    • 2013
  • In the area of legal studies, negotiation can be taught as a profession skill in legal matters such as making negotiating a contract or resolving disputes including alternative dispute resolution. Given recent changes in the legal services market such as the opening of the market, expected higher competition in the legal profession and a high expectation for lawyers' role in society, negotiation skills are an important element of legal expertise that should be developed in law schools. The main purpose of negotiation training should be to make law school students aware of their role as lawyers to help their clients resolve their problems using their legal expertise and negotiation skills in an appropriate and effective way.

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The Development of Intellectual Solar Green Street Lighting using Q-TRIZ (Q-TRIZ를 활용한 지능형 쏠라 그린조명시스템 개발)

  • Huh, Yong-Jeong;Hong, Seong-Do;Leem, Sa-Hwan
    • Journal of the Semiconductor & Display Technology
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    • v.10 no.3
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    • pp.43-47
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    • 2011
  • Recently the government banners green growth promises as a paradigm of national development which are to reduce greenhouse gases and environmental pollution by exhaust gases from automobiles. Existing in all countries around the world by using fossil fuels to minimize environmental changes are developing a new alternative energy sources. Among the emerging alternative energy, using solar energy technology is applied across the industry, but the maintenance and repair to integrate solar cells and has been a problem occurs. To prolong the life of cells integrated on a solar cell is exposed when the non-eye, etc., when not integrated by the solar cells should not be exposed. In order to resolve these contradictions, a intellectual solar green street lighting was developed by using Q(Quick)-TRIZ.

A Study on the Creative Design of Solar Flower using TRIZ(6SC) (TRIZ(6SC)를 활용한 솔라 플라워의 창의적설계)

  • Leem, Sa-Hwan;Hong, Seong-Do;Huh, Yong-Jeong
    • Journal of the Semiconductor & Display Technology
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    • v.10 no.2
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    • pp.19-23
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    • 2011
  • Global warming is affecting all industries, and has been applied very quickly in the energy sector. Existing in all countries around the world by using fossil fuels to minimize environmental changes are developing a new alternative energy sources. Among the emerging alternative energy, using solar energy technology is applied across the industry, but the maintenance and repair to integrate solar cells and has been a problem occurs. To prolong the life of cells integrated on a solar cell is exposed when the non-eye, etc., when not integrated by the solar cells should not be exposed. In order to resolve these contradictions, a square solar flower of the biological mother was developed by using TRIZ technique(6SC).

Antioxidant, Antimicrobial, and Antiproliferative Activities of Olive (Olea europaea L.) Leaf Extracts

  • Ko, Ki-Wan;Kang, Ho-Jin;Lee, Boo-Yong
    • Food Science and Biotechnology
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    • v.18 no.3
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    • pp.818-821
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    • 2009
  • Total phenol, total flavonoid, reducing powder, electron donating activity, ascorbic acid equivalent antioxidant capacity, antimicrobial and antiproliferative activities of olive leaf extracts were investigated. The contents of total phenol and flavonoid were 257.48 and 92.33 mg in 100 g of olive leaf extract, respectively. The reducing power of the olive leaf extract increased with concentration increasing. Electron donating activity was high in 100 ${\mu}g/mL$ treated olive leaf extract as 95.20%. The ascorbic acid equivalent antioxidant capacity of the olive leaf extract was 68.93 mg/g olive leaf extract. The olive leaf extracts showed relatively high antimicrobial activity against Escherichia coli, Salmonella typhimurium, Bacillus cereus, Staphylococcus aureus, Listeria monocytogenes, and Pseudomonas aeruginosa. All of the cancer cell lines including MKN45, HCT116, NCI-H460, and MCF7 have 70-81% as effective growth inhibition.

Teaching Fractional Division : A Basic Research for practical Application Context of Determination of a unit rate (분수 나눗셈의 지도에서 단위비율 결정 맥락의 실제 적용을 위한 기초 연구)

  • Cho, Yong Jin;Hong, Gap Ju
    • Education of Primary School Mathematics
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    • v.16 no.2
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    • pp.93-106
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    • 2013
  • A large part of students' difficulties with fractional division algorithms in the current algorithm textbooks, seem to be due to self-induction methods. Through concrete analysis of surveys and interviews, we confirmed the educational value of fractional algorithms used to elicit alternative ways of context of determination of a unit rate. In addition, we suggested alternative methods based on the results of the teaching methods and curriculum configuration.

An exploration of alternative way of teaching the Fundamental Theorem of Calculus through a didactical analysis (미적분학의 기본정리의 교수학적 분석에 기반을 둔 지도방안의 탐색)

  • Kim, Sung-Ock;Chung, Soo-Young;Kwon, Oh-Nam
    • Communications of Mathematical Education
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    • v.24 no.4
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    • pp.891-907
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    • 2010
  • This study analyzed the Fundamental Theorem of Calculus from the historical, mathematical, and instructional perspectives. Based on the in-depth analysis, this study suggested an alternative way of teaching the Fundamental Theorem of Calculus.

Comparison of spray characteristics for ammonia, ethanol, n-decane by using numerical simulation (시뮬레이션을 이용한 암모니아, 에탄올, 노말데케인 분무 특성 비교)

  • Lee, Jaejin;Yeom, Eunseop
    • Journal of the Korean Society of Visualization
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    • v.20 no.2
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    • pp.38-44
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    • 2022
  • Due to increasingly strict emission regulations for carbon-based fuels in the shipping industry, there is a significant motivation to investigate the alternative fuel. Ammonia is one of the attractive alternative fuels as a carbon-free fuel. Since ammonia has different properties such as high vapor pressure and low boiling point compared to conventional fuels, further research into ammonia spray behavior is important. In this work, the spray characteristics of ammonia and other fluids (ethanol, n-decane) were compared by using numerical simulation. The results show that the spray characteristics of ammonia differs from those of the others due to the occurrence of flash boiling. The narrow-dispersed spray with accelerated velocity at the center have been observed for ammonia. It is also found that droplets of ammonia achieve smaller diameter with more uniform distribution, leading to better atomization behavior compared to the others.