A Study on the Miniaturization of a Protective Device for the Micro Smart Grid Simulator

Yun‑Seok Ko,Kyung Ryu,Min‑Soo Oh,Hyuk‑Sik Yoon 대한전기학회 2020 Journal of Electrical Engineering & Technology Vol.15 No.1

In this paper, a miniaturization methodology of protective devices (PDs) was proposed which plays a key role in evaluating the efectiveness of the developed protection and control algorithms in the micro smart grid simulator. The micro PD was designed to have the rated voltage of 19 V and the breaking current of 20 A, and was designed in a multi-layered hardware structure to satisfy the size of 13×13 cm2 . Also, the micro PD was designed in a multifunctional structure to allow one micro PD to perform all the functions of the circuit breaker, recloser and switches on the micro smart grid simulator to enhance the efciency of development. Finally, it was verifed that the developed micro PD can be applied as protective devices of the micro smart grid simulator by showing that it operates correctly according to the predetermined operation sequence for the test scenarios on the built test system.

뇌졸중 환자에서 아포지단백 E의 유전자형에따른 혈중 지질과 예후

김연희,박성희,신용일,서정환,김달식 大韓再活醫學會 2000 Annals of Rehabilitation Medicine Vol.24 No.4

산수유 성분에 관한 연구

민윤식 忠州大學校 2010 한국교통대학교 논문집 Vol.45 No.-

The results of the investigation of the various ingredients of the flesh and seed of Cornus officinalis areas follows: (1) The main ingredients of the flesh were water (68.9%) and rough fiber (2.94%) while those of the seed were rough fiber (32.06%) and water (29.4%). The total anthocyanin content of the flesh and seed combined was 170.05 mg/100 g. (2) Four types of free glucose were detected, and the flesh was found to contain more glucose than the seed. Both the flesh and the seed were found to contain fructose (6.2 and 2.49%, respectively) and glucose (5.96 and 2.38%, respectively). (3) Five types of organic acids were detected, and the flesh was found to contain more organic acid than the seed. The flesh contained malic acid (1896.42%) and gallic acid (1762.08%) while the seed contained citric acid (219.69%) and gallic acid (179.09%). (4) A total of 17 types of amino acids were detected. In the flesh, the aspartic-acid content was the largest (24.25%), followed by leucine (23.14%). In the seed, the aspartic-acid content was also the largest (182.64%), followed by serine (92.64%). (5) Eight types of minerals were detected. In the flesh, the potassium (K) content was the largest (598.7%), followed by Mg (50.9%). In the seed, the calcium content was the largest (399.8%), followed by K (298.8%). (6) A total of seven types of fatty acids were detected. Both in the flesh and in the seed, the linoleic-acid content was the highest (9.69 and 54.64%, respectively), followed by oleic acid (5.56 and 12.72%, respectively).

기능성 식품으로서의 화살나무에 관한 연구

민윤식 忠州大學校 2007 한국교통대학교 논문집 Vol.42 No.-

This thesis attempts to examine Euonymus alatus, which is an accessible medical plant in nature, has been used as a source of medicinal properties and widely accepted as a medicine effective against diabetes called one of the adult diseases in the modern world. This study comes to these conclusions after administering the medicine to a diabetic mouse caused by Streptozotocin. 1. In the chemical experiment of Euonymus alatus, branch(B) is 7.1 and leaves(L) is 9.42, crude fat(B) is 5.7 and leaves is 4.3, crude protein(B) is 17.05 and leaves is 10.44, crude ash(B) is 5.8 and leaves 4.59, crude fiber(B)is 10.4 and leaves is 11.8, carbohydrates(B) is 53.95 and leaves is 4.59. 2. In the mineral contents of Euonymus alatus(mg/100g, dry weight), K is 3216.2 and Ca, Mg and Na are in order in alatus branch. K is 2852.4 and Ca and p are in order in alatus leaves. 3. In the fatty acids experiment of Euonymus alatus, Oleic acid is 29.1 in alatus branch but 24.4 in alatus leaves. Linoleic acid, Linolenic acid and Palmitic acid are analyzed in alatus branch and leaves. 4. In the free sugar contents experiment, glucose is 4.84 in alatus branch but 16.38 in alatus leaves, sucros is 4.21 in alatus branch but 5.94 in alatus leaves, fructose is 3.2 in alatus branch but 10.24 in alatus leaves. maltose, galactose and xylose are in order in alatus leaves. 5. In the amino acid experiment, Glutamic acid is 1215.4 and Leucine, Aspartic acid and Arginine are in order in alatus branch. Glutamic acid is 1119.6 and Arginine, Leucine and Valine are in order in alatus branch leaves. 6. The results of diabetes is changed to 101.4(after 5 days), 102.5(10 days), 102.9(15days) and 102.8(20days) after administering an Euonymus alatus medicine. However, the blood sugar level increases by 365.4, 395.4, 396.5 and 397.8 in the laboratory animals not given the medicine. 7. This medicine is closely connected to diabetes because the animals given the medicine shows gentle weight reduction. 8. The class given the liquid extracted from Euonymus alatus significantly decreased in the point of overall cholesterol change. 9. The class given the liquid extracted from Euonymus alatus significantly decreased in the change of triglyceride. 10. The class given the liquid extracted from Euonymus alatus significantly decreased in the change of glucose.

탄산가스 농도 변화가 팽이 버섯 재배에 미치는 영향

윤형식 외 한국버섯학회 2010 한국버섯학회지 Vol.8 No.3

팽이버섯 병재배에서 재배사 내의 탄산가스 농도를 조절하여 소비자 요구에 맞는 버섯을 안정적으로 생산하고, 생육과 수확에 관련하여 적정기준 설정을 위해 실험을 수행한 결과이다. 공시균주 특성 값을 종합해보면 탄산가스 농도가 높아지면 초발이소요일수, 생육일수, 수확일수는 증가하는 경향이고, 백색계열보다 갈색계열이 탄산가스 농도에 상관없이 초발이소요일수, 생육일수, 수확일수가 전체적으로 짧으며, ASI 4103 균주와 같이 균주의 유전적 형질이 재배적 특성에 많은 영향을 주는 것으로 판단된다. 병당 수량성은 균주에 따라 처리농도에 따른 증감의 차이는 있으나, 전반적으로 탄산가스 농도가 높아지면 수확량은 감소하였다. 개체중은 균주에 따라 약간씩 차이는 있으나 대체적으로 탄산가스 농도가 증가하면서 약간씩 감소하는 경향이다. 병당 개체수에서는 균주간의 차이가 커서 탄산가스 농도 증가에 따른 일정한 경향을 확인 할 수 없었다. 자실체의 수분함량은 균주에 따라 약간의 차이는 있으나 탄산가스 농도의 증가에 따라 수분함량이 감소되었다. This study was performed to determine the optimal concentration of carbon dioxide, which effects mushroom growth and yield. It was shown that the periods for fruiting initiation, growth and harvest of Flammulina velutipes were increased when the CO₂ concentration was raised. In general, those characteristics were less affected in brown strains than in white ones. Especially brown strain ASI4103 was susceptible to changes in CO₂ concentration. Yields per bottle and individual mushroom weight also decreased in most strains when CO₂ levels increased. We were unable to designate any tendency in the number of fruiting bodies due to the large variation within each respective strain. Finally, water contents in the fruiting bodies were found to decline under high CO₂ concentrations.

꾸지뽕 나무의 성분분석에 관한 연구

민윤식 忠州大學校 2005 한국교통대학교 논문집 Vol.40 No.2

The Obtained Results from the Experiment are as Follows : 1. The proximate composition was composed of crude fiber 48.9%, Ash 11.19%, Total sugar9.84%, crude fat 8.5% moisture 4.8%. 2. The mineral contents was composed K. Ca. Na was inspect 315.4, 315.6, 80.2㎎%,Mg, Fe, Zn was inspect 50, 5.7, 1.4㎎% 3. The vit contents was composed vit A 5.530 IU, B_(1) 1.4 IU, B_(2) 1.8 IU, C 39 IU, Niacin 1.2 IU 4. The amino acid was composed glutamic acid and aspartic acid was inspect 3.5-4.5g/l00g, 2.4-3.1g/100g 5. The free sugars was composed glucose 2.84, fructose 0.26%, galactose 0.23%, sucrose 0.22% 6. The fatty acid was composed linolenic acid 33.10%, palmitic acid 30.99% linolenic acid 12.55%, oleic acid 3.87%

김해시 가야문화유적을 활용한 사회교육프로그램의 개발

이윤정,이영식 인제대학교 2009 仁濟論叢 Vol.24 No.1

This study, as one of the plans to activate local culture, aims to develop social education program by using historic cultural ruins of Gimhae city. Restored and maintained historic cultural ruins are precious legacy from our ancestors' history and culture and also local property completed by huge fund and struggle of relative institutes and researchers. To know, protect and inform of these historic cultural ruins would be the roles of the local community. One of the solutions is to use the historic cultural ruins of the local community as social education program. This study aims to develop a social education program which links historic cultural ruins of Gimhae city and the cultural infrastructure for their efficient use based on previously suggested necessity of historic cultural ruins application plan. The study methods for this are as follows: Firstly, investigates the current historic cultural resources of Gimhae city. Secondly, examines actual programs applying historic cultural ruins as well as the effect, limit and problem of those programs. Thirdly, suggests new social education program model totally based on current state and application of Gaya cultural ruins in Gimhae city as well as actual programs operated with historic cultural ruins.

金壽根 建築에 나타난 複合的 影響關係 : 헤롤드 블룸의 “影響理論”을 바탕으로 in terms of the Harold Bloom’s “the Theory of Influence”

강윤식,이동언 대한건축학회 2004 대한건축학회논문집 Vol.20 No.7

Ephebe, in other words, a new architect who just debuts makes the revisionary stages against his precursors, in consciousness or unconsciousness. It is the main argument of Harold Bloom’s “the Theory of Influence”. Every new architect, as the belated, establishes his own world by this way. The strong architect who constantly pursues his originality makes his final identification through the three distinctive revisionary dialectic stages consist of the six revisionary ratios, and he completes his ‘original’ works as a synthesis of the all other works of his precursors. According to the theory, the late Kim, Soo-Geun’s architecture is the creative synthesis of the Tange Kenzo, the Yoshimura Junzo, and the Korean architectural traditions.

철근콘크리트 구조의 고층건물에서 전단벽과 골조의 상호작용에 관한 연구

곽윤근,전성남,김상식 연세대학교 산업기술연구소 1983 논문집 Vol.15 No.2

This research is associated with the theoretical analysis of the interaction of shear wall-frame in high rise concrete buildings. In this research, the lateral deflection of the shear wall is approximated by polynomials with unknown coefficients, which are derived from boundary conditions and by calculating the flexural stiffnesses of shear wall and frame. Theoretical analysis has been carried out by considering the lateral shear distribution on shear wall and frame and the continuity of lateral deformation under the assumption of slab diaphragm action. The results calculated by the approximate methods presented in this research show good agreements with the computed values by stiffness matrix method. The approximate methods evaluate the shear wall-frame interaction satisfactorily and could be used in the preliminary structural design of shear wall-frame concrete buildings.

會計情報의 相對的 有用性評價에 관한 實證的 硏究

黃允植 동아대학교 경영대학 1990 經營硏究 Vol.- No.4

The basic objective of accounting is to provide users with a useful information for economic decision making. Over the last decades there has been a considerable research focused on the improvement of the usefulness of accounting informations. This study is designed to test (1)The usefulness of current accounting information provided for decision making of investor group and (2)The attitude of preparing group th the requirement of new information. In practical, the study was carried by a questionnare investigation over both of preparing and using group of financial reports, in order to find the identities between those groups in order of the importance of the items. The main objective of the study is to promote the usefulness of financial reporst, and a close study for public announcement is to be conducted in pursuit of the reality, The purpose of accounting must be to provide with more useful informations, and it must be totally determined both in qualitative and quantitative sides in order to select items of information. In order to analsyze each x-group, Y-group and Z-group, the method of analysis of variance was used. As a result, 21 items were disregarded and rejected. And significance level 5% was used to see difference of those. In addition, frequency analysis was conducted where it is necessary and conducted correlative analysis with the chi-square examination. After a practical study, a final conclusion is made as follows: First of all, it was revealed that both of preparing and using group were likely being back of understandability of financial information while they realize the financial informations as a variable means of controlling stock-prices effectively. Secondly, those two groups are having a different view-point in regard to whether the financial informations are worthy to thrust on the fairness. Thirdly, intermediators(stock analyst and investment consultant) have a tendency to set a higher valus on non-accounting informations in korea. Forthly, the contribution of the system of director-in-charge for the public announcement. Finally, most of the investors desire additional information like as the trends of future-directive and also dynamic.