• 제목/요약/키워드: Sample area survey

검색결과 432건 처리시간 0.029초

Chemical and Kinematic Properties of Sagittarius Stellar Streams

  • Kang, Gwibong;Lee, Young Sun;Kim, Young Kwang
    • 천문학회보
    • /
    • 제46권2호
    • /
    • pp.67.1-67.1
    • /
    • 2021
  • We use Sloan Digital Sky Survey, Large Sky Area Multi-Object Fibre Spectroscopic Telescope, and Apache Point Observatory Galactic Evolution Experiment data to analyze the kinematic and chemical properties of stellar members in Sagittarius(Sgr) tidal streams. Using distances, positions, proper motions, and angular momenta of stars around the Sgr streams, we gather clean sample of Sgr member stars. We find that the leading arm has different chemical, kinematic, orbital characteristics from those of the trailing arm and the remnant of Sgr. In particular, the leading arm shows relatively lower eccentricity distribution than the trailing arm, suggesting their origin may differ or they have experienced different dynamical evolution, which is in somewhat mystery.

  • PDF

Analyzing Management Factors on Enterprise Performance

  • Dahlgaard, Jens J.;Ciavolino, Enrico
    • International Journal of Quality Innovation
    • /
    • 제8권3호
    • /
    • pp.1-10
    • /
    • 2007
  • A sample of Italian manufacturing companies was selected in order to verify the abilities and effects (relationships) of the management factors human resources, leadership and strategic planning on company performance. The Partial Least Squares (PLS) estimation method was used for analyzing the data collected, where the relationships between the management factors and performance were formalized by a Structural Equation Model (SEM). The analysis of the survey data showed unexpected result regarding the non significant direct relationship between Leadership and Performance. The effect of Leadership is obtained by an indirect relationship through Human Resources. The combination of Leadership and Human Resources has hence been identified as the management factors which have the highest impact on the performance of Italian industrial companies. Another interesting and unexpected result was that there was no significant impact of Strategic Planning on Performance. It seems that the leaders of Italian industrial companies have not understood that good strategic planning is a necessary condition for achieving excellence. So another improvement area is in fact Strategic Planning. This area should have the highest priority of any top management team and the focus should include how to establish a strong relationship between strategic planning and performance. No correlation between strategic planning and performance is a strong indication that something is wrong. It is not enough that Leadership is doing Strategic Planning-Leadership is also about studying and follow up on results in order to assure impacts on performance. This link seems to be missing in Italian industrial companies.

식품섭취빈도와 24시간 회상법으로 조사한 한국농촌성인의 영양소 섭취 평가비교 연구 (Comparative Assessment of Nutrient Intake and Quality Obtained by Food Frequency Questionnaire and 24-Hour Recall Method in Korean Adults Living in Rural Area)

  • 이심열
    • 대한가정학회지
    • /
    • 제36권1호
    • /
    • pp.143-155
    • /
    • 1998
  • This study was conducted to compare dietary intake and quality obtained by food frequency questionnaire(FFQ) and 24-hour recall method among 1249 Korean adults living in rural area. The survey was conducted twice; first with 65-items FFQ by interview and then with 24-hour recall method two years later. Nutrients intake estimated from two dietary methods showed significant difference. For nutrients except fat and iron, average intake value estimated from the FFQ were significantly higher than that from the 24-hour recall method(p<0.001). Ranking of the subjects by nutrient intake levels obtained by two methods were significantly correlated, but correlation coefficients were low. Percentage of subjects in the lowest or in the highest quintile by 24-hour recalls who belong to the nearest two categories by FFQ ranged from 45% to 61%, while the percentage falling into the opposite category ranged from 7% to 15%. Subjects' percentile rank of nutrient intake by 24-hour recall correlated with their average rank of nutrient intake by FFQ. Information on food groups by two method were not comparable because of the limited number of food items in FFQ. For most nutrients, RDA% or NAR from FFQ were higher than those from 24-hour recall, but INQ from 24-hour recall were higher than those from FFQ. From the results, results of 24-hour recall method seems to be useful in classifying subjects according to their nutrient intake if sample size is large enough.

  • PDF

경북 포항지역에서의 심부 지열수자원 개발 사례 (Development of deep-seated geothermal energy in the Pohang area, Korea)

  • 송윤호;이태종;김형찬
    • 한국신재생에너지학회:학술대회논문집
    • /
    • 한국신재생에너지학회 2005년도 춘계학술대회
    • /
    • pp.693-696
    • /
    • 2005
  • KIGAM (Korea Institute of Geoscience and Mineral Resources) launched a new project to develop the low-temperature geothermal water in the area showing high geothermal anomaly, north of Pohang city, for large-scale space heating. Surface geologic and geophysical surveys including Landsat 1M image analysis, gravity, magnetic, Magnetotelluric (MT) and controlled-source audio-frequency MT (CSAMT), and self-potential (SP) methods have been conducted and the possible fracture zone was found that would serve as deeply connected geothermal water conduit. In 2004, two test wells of 1.1km and 1.5km depths have been drilled and various kinds of borehole survey including geophysical logging, pumping test, SP monitoring, core logging and sample analysis have followed. Temperature of geothermal water at the bottom of 1.5km borehole reached over $70^{\circ}C$ and the pumping test showed that the reservoir contained huge amount of geothermal water. Drilling for the production well of 2 km depth is on going. After test utilization and the feasibility study, geothermal water developed from the production well is going to be provided to nearby apartments.

  • PDF

강남, 강북 지역간 초등학생의 스트레스 수준과 대처행동의 비교 (The comparison between northern and southern elementary students of seoul on the stress levels and coping behaviors)

  • 이규영
    • 한국학교보건학회지
    • /
    • 제20권2호
    • /
    • pp.81-89
    • /
    • 2007
  • Purpose: The Purpose of this study was to compare stress level and stress coping behavior of elementary students in southern and northern area of Han river. Methods: This was a descriptive comparative survey using a convenience sample of 403 5th-and 6th-grade students. The data were analyzed by X2-test, t-test, ANOVA and multiple regression using SPSS 11.5 statistical program. Results: The level of stress and stress coping behavior according to northern and southern elementary students of seoul, Stress levels tended to increase more significantly with less satisfied life, more study time, in female students than male students. in northern students, and with more individual factors. With regard to stress coping behaviors. students with higher life-satisfaction tended to use active coping, and female students used more positive and mystic coping than negative coping. Conclusion: Students living in northern area, and more female students than male students showed a high level of stress, and students with a higher stress level were better able to cope with stress. Thus, it could be concluded that programs to lower stress levels are needed more than stress intervention programs.

Perceived Competency, Frequency, Training Needs in Physical Assessment among Registered Nurses

  • Oh, Heeyoung;Lee, Jiyeon;Kim, Eun Kyung
    • 성인간호학회지
    • /
    • 제24권6호
    • /
    • pp.627-634
    • /
    • 2012
  • Purpose: The purpose of this study was to identify registered nurses learning needs about physical assessment. Specifically, what are the perceived competency, frequency of skill use and the unmet training needs. Methods: The study was an exploratory survey study. The sample was 104 registered nurses. Data were collected through three instruments: The Perceived Competency in Physical Assessment Scale, the Frequency of Physical Assessment Scale, and the Training Needs of Physical Assessment Scale which incorporated 30 core Physical Assessment skills. Descriptive statistics, t-test, and Pearson's correlation coefficient were used to analyze the data. Results: Auscultation of heart and lung sounds and inspection of the spine were rated by the subjects as physical assessment skills they feel least competent and also were less frequently performed. The most competent area for physical assessment was neurological system. The respiratory and abdominal system was identified as two systems that more education would be needed. Nurses with less than one year of working experience reported needing more training. Nurses with more than five years of clinical work experience performed physical assessment more frequently than nurses with less than five year of work experience. The perceived competency was positively related to the frequency of physical assessment. Conclusion: Continuing education is necessary to further train registered nurses regarding physical assessment skills and the program needs to be focused on the area which nurses are less competent for and have high training need.

화장장 이용자의 시설요구에 관한 연구 (User Demand on the Crematorium Facilities)

  • 민병욱;이행열;이재근
    • 한국조경학회지
    • /
    • 제27권4호
    • /
    • pp.122-130
    • /
    • 1999
  • The main purpose of this project is to improve the funeral and grave culture which has brought about many social problems, and to fix the crematory culture as the future funeral ceremony in our country. In this study, we first investigated the actual condition of cremation culture. Second, we survey three representative crematorium as an object of study and investigated similar sample buildings in Japan, we analyzed the problem of existing crematorium. Finally, we arranged the basics to approach the space program and design criteria of this project. 1. The entrance of vehicles has been commonly concentrated to the opening time of crematorium. therefore, Peak time has come out as circulation of cremation and waiting time is increasing, also it is difficult to manage the congestion normally. 2. The whole problem of crematorium is poor environment, inferior buildings, noise, unsatisfactory ventilation and privacy, insufficient convenience facilities. 3. The user demand on the crematorium facilities is a private family room for waiting area, a farewell room for family members in a direct line, an outdoor rest area, and the various service facilities, and so on. 4. For improvement of the funeral and grave culture, it is necessary that crematorium is not a hatred facilities, as the conversion of consciousness, and to new shape of charnel as it wore family tomb.

  • PDF

Effect of the Freshwater Discharge on Seawater and Sediment Environment in a Coastal Area in Goheung County, South Korea

  • Nguyen, Hoang Lam;Jang, Min-Seok;Cho, Hyeon-Seo
    • 해양환경안전학회지
    • /
    • 제20권3호
    • /
    • pp.270-276
    • /
    • 2014
  • Seasonal characteristics of water and sediment qualities and potential effects of the freshwater discharge from a small tide embankment interior in a coastal area in Goheung county were investigated from May to September in 2012. Chemical oxygen demand values (COD) were mostly higher than 2 mg/L in summer ebb tide, which exceed the standard value of water quality criteria II of acceptable level for aquaculture activities. Nitrogen and phosphorus were found as the limiting nutrients for algae growth in summer and fall and in spring, respectively. Nitrogen was the limiting nutrient for diatom growth in the whole studied period. The sudden high values of COD, ammonia, dissolved inorganic nitrogen (DIN), dissolved inorganic phosphorus (DIP) were found in water sample collected from station 5 which located in front of the tide embankment sluice gate during spring ebb tide. The freshwater discharge form the tide embankment interior maybe affected the survey areas during a short time interval. Mean values of eutrophication index of the surveyed coastal region in spring, summer and fall were all bigger than 1. Water quality was mostly considered at level II which acceptable for aquaculture activities. Sediment quality in this study was generally in the range of standard for fisheries environment.

일반인의 에이즈에 대한 지식 및 태도 (Knowledge and Attitudes Towards AIDS in a General Population)

  • 김소영;이진석;박수경;김용익
    • 보건교육건강증진학회지
    • /
    • 제25권4호
    • /
    • pp.13-28
    • /
    • 2008
  • Objectives: The purpose of this study was to assess general population' AIDS knowledge and attitudes towards AIDS. Methods: Using a multistage area sampling and random digit dialing method, a random sample of individuals aged 19-59 years, living in 16 different area in Korea during September 2007 were interviewed by telephone. Results: In all, 1,087 respondents completed the survey. In most items, respondents displayed a fairly good degree of knowledge about AIDS. However it was lower than that in developed countries. Respondents' attitudes towards AIDS were found to be negative. The knowledge and attitudes towards AIDS were more positive for respondents who were young, educated, office worker or students, higher in income. The higher level of knowledge, the more positive attitudes towards AIDS. Conclusions: In general AIDS related knowledge was relatively low and people showed negative attitudes towards AIDS. Incorrect knowledge and lack of information on AIDS would lead to unnecessary negative attitudes and there need to be addressed by health education programs and campaigns using mass media.

사용자 만족도 분석에 근거한 초등학교 병설유치원의 계획특성 연구 (A Study on the Design Characteristics of Kindergarten attached to Elementary School based on User's Needs)

  • 송은정;최재영;정지석;최무혁
    • 교육시설
    • /
    • 제11권5호
    • /
    • pp.35-43
    • /
    • 2004
  • The purpose of this study is to produce the architectural basic data for the planning of Kindergarten attached to the elementary school. For this study, 19 Kindergartens in Taegu city was selected and investigated as the sample of the survey. The results of this study are as follows. 1) 'The Independent-type' can be general application of the kindergarten's layout type. And it must be considered about connection with some public facilities in the elementary school. 2) The architectural guidelines for each rooms can be suggest as follow. Classrooms and the Playroom should be existed independently and be located about suitable area. The Location of the Playground should be considered about kindergartener's approach, distance from elementary school and noise. And the Playground needs washstands and shade resting places. In the Classrooms and the Playroom, the designer should consider about suitable area and storage. 3) The flexible space-program is necessary for each management type.