• 한국대기환경학회:학술대회논문집
• /
• 한국대기환경학회 2004년도 춘계학술대회 논문집
• /
• pp.65-69
• /
• 2004

The need for developing sustainable solutions for managing the animal waste is vital for the future of the animal industry in North Carolina. As part of that process, the North Carolina Attorney General has concluded that the public interest will be served by the development and implementation of environmentally superior swine waste management technologies appropriate to each category of hog farms. To facilitate in the development, testing, and evaluation of potential technologies it is necessary that all aspects of environmental issues (air, water, soil, odor and odorants, and disease-transmitting vectors and airborne pathogens) be addressed as Part of a comprehensive strategy, Program OPEN (Odor, Pathogens, and Emissions of Nitrogen) Is comprehensively addressing these issues.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2009년도 제40회 하계학술대회
• /
• pp.1509_1510
• /
• 2009

This paper presents the design and simulation results of ohmic contact RF MEMS silicon switch with a high isolation at high frequencies along with the position of a contact part, initial off-state and intermediate off-state including the state where a contact part is placed right over a signal line of coplanar waveguide (CPW). The ohmic contact part is connected with comb drives made of high resistivity single crystalline silicon. The released contact part is $30{\mu}m$ apart from the edge of signal line on the glass substrate along the lateral direction (x-direction) at initial off-state. The electrostatic force of the comb electrode creates the x-directional movement thus initial state is converted to the intermediate off-state. The initial off-state of the switch results in isolations of -31 dB, -24 dB and reflections of -0.45 dB, -0.67 dB at 50 GHz and 110 GHz, respectively. It shows the isolation degradation when the contact part moves right over the signal line of CPW like an initial off-state of a conventional MEMS switch. The isolations and reflections are -31 dB, -24 dB and -0.50 dB, -1.31 dB at 50 GHz and 110 GHz, respectively at the intermediate off-state.

• 사상체질의학회지
• /
• 제21권3호
• /
• pp.107-121
• /
• 2009

1. Objectives: We aimed to know what are different in physiological and pathological symptoms associated with health state according to Sasang Constitution in women 2. Methods: We recruited 338 women between 10 and 80, excluding individuals who have physically or psychologically serious disease, or women in pregnancy among Korean population in Traditional Korea Clinics. We used CRF(Case Report Form, C-2009-002439) as measurement of physiological and pathological symptoms and SF-36 (Short Form-36) as measurement of health state We analyzed association between physiological and pathological symptoms and health state with Two-way ANOVA 3. Results: There are 9 different symptoms associated with health state, such as digestion state, uncomfortable problem in belly, indigestion in bad condition, abnormal sweat, night sweat, clean in urine, no problem in urine, feel heavy in chest according to Sasang constitution. 4. Conclusions: Physiological and pathological symptoms are associated with health state and some symptoms associated with health state are different according to Sasang Constitution in women.

• 한국항행학회논문지
• /
• 제15권4호
• /
• pp.536-542
• /
• 2011

본 논문에서는 GPS/INS 강결합 시스템에서 다중경로 오차에 대한 EKF와 total-state UKF 두 가지 필터의 성능을 비교 분석하였다. 도심 빌딩숲에서 많이 발생하는 다중경로 오차가 없는 경우와 있는 경우에 대하여 시뮬레이션을 수행하였고, 위성이 3개만 보이는 경우에 두 필터의 추정 성능을 비교하였다. 다중경로 오차가 없을 경우보다 있는 경우에 total-state UKF가 EKF에 비하여 더 좋은 추정 성능을 보여서 total-state UKF의 성능이 더 강인함을 확인할 수 있었다.

• 한국식품영양학회지
• /
• 제18권3호
• /
• pp.229-240
• /
• 2005

This quantitative study was investigated to examine the relationship between severity of state-trait anxiety and disordered eating patterns in some university students. This study used a cross-sectional study design. Total 347 students participated in this study (88 male and 259 female) among three universities. The assessment of eating disorder was conducted by Eating Attitudes Test (EAT-26), a score of >or=20 identified individuals likely to have an eating disorder, including anorexia nervosa and bulimia nervosa. Scores of healthy dietary behaviors were obtained by self-assessment instrument on healthy diet scale(20-item questionnaire), and severity of state-trait anxiety was calculated by state-trait anxiety inventory(Total 40- item questionnaire). In groups for each state anxiety and trait anxiety, there were divided between 50 percentile point of cumulatived scores of state anxiety and trait anxiety in all subjects. Linear regression analysis showed overall significant difference between dietary patterns(anorexia nervosa and healthy dietary behaviors) and severity of state-trait anxiety in all sex. Our results indicated that severity of state-trait anxiety may marked eating disorder symptomatology on dimensions of eating disorder prevention.

• 한국문헌정보학회지
• /
• 제41권2호
• /
• pp.203-218
• /
• 2007

본 연구는 우리나라 지역대표도서관의 서비스 방향을 고려하기 위해 미국의 주 도서관의 서비스 내용을 분석하였다. 통계자료와 주 도서관 웹 페이지를 통하여 데이터를 수집하였다. 분석 결과 미국 주 도서관은 주마다. 차이가 많이 있지만 핵심 기능은 지역 도서관에 대해 예산, 서비스, 교육 등을 지원하는 것이었다. 지역주민에 대한 직접적인 서비스는 지역의 공공도서관에 비해 그 규모는 작지만 주 단위의 역사 및 정보를 수집 및 제공하며, 동시에 장애인을 위한 서비스를 담당하고 있었다. 이와 같은 미국 사례를 비추어볼 때, 우리나라 지역대표도서관은 지역의 공공도서관을 지원하며 공공도서관과 차별화된 서비스를 제공하여야 한다. 또한 지역대표도서관은 각 지역 특성에 맞는 형태로 운영되어야 한다.

• 사상체질의학회지
• /
• 제20권2호
• /
• pp.11-20
• /
• 2008

1. Objectives The objective of this paper is to understand on treatment of in critical state patients based on the text book of Sasang Constitutional Medicine. We expect this study can be helpful in treating the critical state patients. 2. Methods The study is mainly based on the bibliographical research on the "Dongyisoosebowon" and on the "Principle of dosing for patient in critical state". 3. Results and conclusions Lee je-ma suggested a health scale which people can measure his health grade from a standard healthy state to severe diseases. We investigated the treatment of 'critical state' patients according to his scale. Lee je-ma also confirmed the standard dose of herbs and how to take herbs in compliance with the state which each patient in. We tried to find a rules of treating the critical state patients based on the text "Dongyisoosebowon" and we suggested brief principles in treating patients.

• 대한설비공학회:학술대회논문집
• /
• 대한설비공학회 2008년도 하계학술발표대회 논문집
• /
• pp.282-287
• /
• 2008

Identification of steady-state is the first step in developing a fault detection and diagnosis (FDD) system. In a complete FDD system, the steady-state detector will be included as a module in a self-learning algorithm which enables the working system's reference model to "tune" itself to its particular installation. In this study, a steady-state detector of a residential air conditioner based on moving windows was designed. Seven representing measurements were selected as key features for steady-state detection. The optimized moving window size and the feature thresholds was suggested through startup transient test and no-fault steady-state test. Performance of the steady-state detector was verified during indoor load change test. From the research, the general methodology to design a moving window steady-state detector was provided for vapor compression applications.

• Journal of Electrical Engineering and Technology
• /
• 제13권5호
• /
• pp.1927-1934
• /
• 2018

In this paper, we studied the state of charge (SOC) estimation algorithm of a high-capacity lithium secondary battery for electric vehicles (EVs) considering temperature characteristics. Nonlinear characteristics of high-capacity lithium secondary batteries are represented by differential equations in the mathematical form and expressed by the state space equation through battery modeling to extract the characteristic parameters of the lithium secondary battery. Charging and discharging equipment were used to perform characteristic tests for the extraction of parameters of lithium secondary batteries at various temperatures. An extended Kalman filter (EKF) algorithm, a state observer, was used to estimate the state of the battery. The battery capacity and internal resistance of the high-capacity lithium secondary battery were investigated through battery modeling. The proposed modeling was applied to the battery pack for EVs to estimate the state of the battery. We confirmed the feasibility of the proposed study by comparing the estimated SOC values and the SOC values from the experiment. The proposed method using the EKF is expected to be highly applicable in estimating the state of the high-capacity rechargeable lithium battery pack for electric vehicles.

• 대한전기학회논문지:전력기술부문A
• /
• 제51권1호
• /
• pp.29-36
• /
• 2002

It is required that the current state of system should be Precisely monitored for efficient and safe operation of the subway power system and it is an important Problem to secure the high quality data for state estimation. The current state of subway power system is estimated by using data transmitted to control center from every measuring instrument. The high accuracy and trust can be maintained if the measured data have a high quality. But it is difficult to estimate the accurate state of system because of the noises in transmitted data and the inaccuracy of measuring instruments. So the object is to reduce the difference between the real values and the measured values in order to improve considerably the inaccuracy due to Instrumental errors and transmission noises using the state estimation method. In this paper, we proposes a new state estimation to estimate the accurate state of the subway power system from the measured values of a Sang-In station in Daegu subway and consider the possibility of application to the real subway power system. on the basis of that. The simulation results show to make sure of the possibility to apply to the real system usefully.