In this research, a simulation program is developed in order to investigate non steady-state cornering performance of 6WD/6WS special-purpose vehicles. 6WD vehicles are believed to have good performance on off-the-road maneuvering and to have fail-safe capabilities. But the cornering performances of 6WS vehicles are not well understood in the related literature. In this study, 6WD/6WS vehicles are modeled as a 18 DOF system which includes non-linear vehicle dynamics, tire models, and kinematic effects. Then the vehicle model is constructed into a simulation program using the MATLAB/SIMULINK so that input/output and vehicle parameters can be changed easily with the modulated approach. Cornering performance of the 6WS vehicle is analyzed for brake steering and pivoting, respectively. Simulation results show that cornering performance depends on the middle-wheel steering as well as front/rear wheel steering. In addition, a new 6WS control law is proposed in order to minimize the sideslip angle. Lane change simulation results demonstrate the advantage of 6WS vehicles with the proposed control law.

These days, costumes of Korean creative dancing performances have been changed to be modernized and to be out of traditional regulation, as the representation of the Korean styles were replaced by other props and art devices. In this article, we have applied the emotions expressed in Jin-Yi Hwang’s sijos (Korean traditional poems), to Korean creative dancing costumes in modern style. chose three typical sijos from her six pieces, titled “Green mountain is like what I’ve meant”, “To Byeokgyesoo in Cheongsan-ri” and “Dongjibam ginaginbam”. In brief, Jin-Yi Hwang expressed her “everlasting love and emptiness”, “temptative conciliation” and “eager waiting” these three sijos, respectively. The character of Jin-Yi Hwang was shown in many TV soap operas and films, and the costumes were either much modernized, and not accurately based on the sijos she had written. Thus, we designed, made flat sketched, and fabricated three Korean creative dancing costumes from the three sijos, listed. We tried to highlight the aesthetic impression and the activeness of the dancing costumes, using both traditional and modern Korean fabrics. Since Korean dance costumes had not yet been inspired from Jin-Yi Hwang’s sijos, we discussed the importance of the fabric items, as well as the visual, auditory, and tactile characteristics of the costumes and dancers to emphasize Jin-Yi Hwang’s expressed emotions.

Citation frequency is an important factor in evaluating journal quality and is used as a measure of journal impact. The citation index of a paper plays an important role in linking papers with groups of other academic papers, forming a huge and complex network. This study examines the intellectual structure of apparel research through the bibliometric citation analysis of The Research Journal of the Costume Culture (RJCC). In order to analyze the changes in the intellectual structure of the RJCC, we used the Korea Citation Index’s (KCI) data (highly citing journals and highly cited journals). The NodeXL, a social network analysis tool, was used to examine the connection structure between journals. In order to identify the academic influence of the RJCC, we used the KCI journal citation index. Our findings indicate that the RJCC has a high centrality index among the clothing-oriented journals in the same life sciences field. A look at the journals citing the RJCC and the journals cited within the RJCC also showed that more journals of diverse fields have been recently linked through their citations. This suggests that a convergence of interdisciplinary research is underway in the field of clothing. As a result of examining international journals cited in the RJCC, it was confirmed that they were cited in prominent international journals in various fields.

PURPOSES: The objective of this study is to evaluate and compare the stiffness characteristics and seasonal variation in surface deflections of block and asphalt pavements using the light weight deflectometer (LWD) and falling weight deflectometer (FWD). METHODS: LWD and FWD testing was conducted on block and asphalt pavement sections in a low-impact development facility, to evaluate the structural capacity and seasonal variation in asphalt pavements. To analyze the seasonal variation in stiffness characteristics, this testing was performed in October 2016, January 2017, and March 2017 in the same drop locations. RESULTS : It was found from that the average center deflections in the asphalt and block pavements were 218 ㎛ and 2974 ㎛, respectively. The center deflections measured using FWD testing in block pavement are 15 times those measured in asphalt pavement. It was also observed that LWD deflections in block pavements were decreased by approximately 65-90% as the air temperature dropped from 20 to 4℃. The degree of reduction in block pavement was significantly higher when compared with asphalt pavement, which showed a 25- 50% reduction in deflection. CONCLUSIONS: When using block pavements for roadways, the structural capacity of the pavement system should be considered during the design and construction stages. In block pavements, the use of low-quality material and insufficient compaction in the base and subgrade layers can induce a reduction in structural capacity, which would lead to the need for frequent repair work. A reinforcement underneath the block layer would be an appropriate measure for improving the structural support and extending the service life.

통일선교를 준비하는 우리들에게 생애사적 증언에 기초한 북한의 정치·사회·경제·문화는 물론, 복음 환경과 같은 상황적 이해가 매우 중요하다. 졸저의 생애사 주인공 강철수(가명)는 북한이탈주민으로서 현재 남한에서 기독교 복음사역을 하고 있다. 이 연구는 강철수가 복음을 수용하고 북한선교 사역자가 되기까지의 생애사를 로젠탈 (Ronsenthal)생애사 연구방법으로 분석했다. 특히 강철수가 복음을 접하게 된 계기, 수차례의 탈북, 체포 및 수감생활 등 한국에 입국하기 전까지 생사를 넘나들던 시기, 그리고 한국 입국과 그 이후 신학대학원에서의 공부와 북한선교사역의 시작 등 현재까지의 그의 생애사를 분석했다. 분석결과 중국에서 복음을 전해 준 두 분의 영적아버지와 한국에서 북한선교의 비전을 심어 준 영적어머니와의 만남이 가장 중요한 요인으로 드러났다. 강철수의 신실한 믿음은 준비 된 인적자원 (human resources)과의 만남이라고 할 수 있는데, 이를 통해 우리는 통일선교 시대를 맞이하여 사람을 준비하는 일의 중요성을 새롭게 인식할 수 있는 것이다.

Green BaSi2O2N2:0.02Eu2+ phosphor is synthesized through a two-step solid state reaction method. The first firing is for crystallization, and the second firing is for reduction of Eu3+ into Eu2+ and growth of crystal grains. By thermal analysis, the three-time endothermic reaction is confirmed: pyrolysis reaction of BaCO3 at 900 oC and phase transitions at 1,300 oC and 1,400 oC. By structural analysis, it is confirmed that single phase [BaSi2O2N2] is obtained with Cmcm space group of orthorhombic structure. After the first firing the morphology is rod-like type and, after the second firing, the morphology becomes round. Our phosphor shows a green emission with a peak position of 495 nm and a peak width of 32 nm due to the 4f65d1→4f7 transition of Eu2+ ion. An LED package (chip size 5.6 x 3.0 mm) is fabricated with a mixture of our green BaSi2O2N2, and yellow Y3Al5O12 and red Sr2Si5N8 phosphors. The color rendering index (90) is higher than that of the mixture without our green phosphor (82), which indicates that this is an excellent green candidate for white LEDs with a deluxe color rendering index.

The multi-layer insulating curtains used in the experiment was produced in six combinations using non-woven fabric containing aerogel and compared and analyzed by measuring heat flux and heat perfusion rates due to weight, thickness and temperature changes. Using silica aerogel, which have recently been noted as new material insulation, this study tries to produce a new combination of multi-layer insulating curtains that can complement the shortcomings of the multi-layer insulating curtains currently in use and maintain and improve its warmth, and analyze the thermal properties. The heat flux means the amount of heat passing per unit time per unit area, and the higher the value, the more heat passing through the multi-layer insulating curtain, and it can be judged that the heat retention is low. The weight and thickness of multi-layer insulation curtains were found to be highly correlated with thermal insulation. In particular, insulation curtains combined with aerogel meltblown non-woven fabric had relatively higher thermal insulation than insulation curtains with the same number of insulation materials. However, the aerogel meltblown non-woven fabric is weak in light resistance and durability, and there is a problem that the production process and aerogel are scattering. In order to solve this problems, the combination of expanded aerogel non-woven fabric and hollow fiber non-woven fabric, which are relatively simple manufacturing processes and excellent warmth, are suitable for use in real farms.

Bacterial wilt caused by Ralstonia solanacearum is a major disease that affects tomato plants widely. R. solanacearum is a soil born pathogen which limits the disease control measures. Therefore, breeding of resistant tomato variety to this disease is important. To identify the susceptible variety, degree of disease resistance has to be determined. In this study, micro sap flow sensor is used for accurate prediction of resistant degree. The sensor is designed to measure sap flow and water use in stems of plants. Using this sensor, the susceptibility to bacterial wilt disease can be identified two to three days prior to the onsite of symptoms after innoculation of R. solanacearum. Thus, this find of diagnosis approach can be utilized for the early detection of bacterial wilt disease.

The purpose of this study is to provide basic data for setting environmental design standards for domestic greenhouses. We conducted experiments on thermal environment measurement at two commercial greenhouses where hot water heating system is adopted. We analyzed heat transfer characteristics of hot water heating pipes and heat emission per unit length of heating pipes was presented. The average air temperature in two greenhouses was controlled to 16.3oC and 14.6oC during the experiment, respectively. The average water temperature in heating pipes was 52.3oC and 45.0oC, respectively. Experimental results showed that natural convection heat transfer coefficient of heating pipe surface was in the range of 5.71~7.49W/m2 oC. When the flow rate in heating pipe was 0.5m/s or more, temperature difference between hot water and pipe surface was not large. Based on this, overall heat transfer coefficient of heating pipe was derived as form of laminar natural convection heat transfer coefficient in the horizontal cylinder. By modifying the equation of overall heat transfer coefficient, a formula for calculating the heat emission per unit length of hot water heating pipe was developed, which uses pipe size and temperature difference between hot water and indoor air as input variables. The results of this study were compared with domestic and foreign data, and it was found to be closest to JGHA data. The data of NAAS, BALLS and ASHRAE were judged to be too large. Therefore, in order to set up environmental design standards for domestic greenhouses, it is necessary to fully examine those data through further experiments.

본 연구는 학교교육을 구조주의에 기반을 두어 분석 및 비판하고 제언하여 학교현장의 문제를 해결하 고자 함을 그 목적으로 한다. 학교에서 생기는 문제들은 단순히 개인적이거나 개인들 간의 일탈적 관계에 의한 것이 아니라 구조적으로 발생하는 것이다. 이를 위하여 구조주의의 속성과 특성을 분석하여 학교교육에 적용하였다. 학교는 사회에서 구조적으로 그 역할과 의무가 결정된 기관이다. 사회화와 선발 및 분배가 그것이다. 또한 학교는 랑그로서의 사회로부터 개념화되지만, 학교 스스로가 랑그로서 성취나 공동체 의식, 그리고 규율 등의 구조소를 갖는다. 그러나 학교가 사회구조적인 관점에서 개인의 관점으로 이동되고, 사회구조의 왜곡되고 변질된 논리가 학교에 구조적으로 침투된다면 학교는 제 기능을 못하게 되고 각 종 문제를 야기한다. 그러므로 미래의 학교를 이상적인 공간으로서 사회와 분리하고, 엄격함의 논리를 따르는 사회화기관으로서, 그리고 단 한명의 학생도 포기하지 않는 기관으로 거듭나도록 해야 한다. 인간의 배움본능을 실현하고. 의미와 쓰임새가 명확한 지식을 체득화 시켜주며, 뫔의 온전성을 지켜주는 학교교육은 구조적으로 사회의 요구를 충족시켜줌과 동시에 그 어떤 문제도 생기지 않는 이상적인 공간이 될 것이다.

본 연구는 경기도 장애인거주시설 종사자의 서비스 질에 영향을 미치는 요인을 분석하여 개선방안을 강구하는데 목적이 있다. 분석결과는 다음과 같다. 조직특성에 유의미 한 차이를 가져오는 변수는 연령, 학력, 근무기간이었으며, 직무소진의 변수에는 연령, 학력, 고용형태, 임파워먼트에는 연령, 학력, 근무기간, 직무 스트레스에는 월급여, 고용 형태, 학력, 일가치감에는 학력, 근무기간, 고용형태, 직무만족에는 연령, 월급여, 고용형태, 서비스 질은 연령, 고용형태, 월급여 등이었다. 따라서 장애인거주시설에 다음과 같이 요구되어 진다. 첫째, 종사자의 직무소진 및 직무 스트레스의 예방 및 대응조치가 강구되어야 한다. 둘째, 장애인거주시설 종사자의 서비스 질을 높이기 위해서는 종사자들 이 직무환경요인에 변화가 있어야 한다. 셋째, 장애인거주시설 종사자의 서비스 질에 영 향을 미치는 조직특성, 직무소진, 임파워먼트, 직무 스트레스, 일가치감 등을 분석하여 종사자가 직무에 만족할 수 있도록 근무환경을 조성할 필요가 있다.