• Title/Summary/Keyword: Service class

Search Result 1,283, Processing Time 0.029 seconds

Maximum User Utility on Contents Delivery System with Multiple Priority Classes

  • Yamori, Kyoko;Tanaka, Yoshiaki;Akimaru, Haruo
    • 대한전자공학회:학술대회논문집
    • /
    • 대한전자공학회 2002년도 ITC-CSCC -2
    • /
    • pp.1113-1116
    • /
    • 2002
  • For contents delivery systems, the service is considered in which the utility depends on each priority class. This paper deals with the multiple priority class of the contents delivery system from the viewpoint of the utility. The willingness to pay (WTP) is introduced as a measure of utility, and the optimum condition is analyzed to maximize the total user's utility. For the system with multiple priority classes, the optimum condition is given in terms of the traffic load, wating time for service for each priority class. Systems with the priority classes, 1, 2 and 3 are analyzed, and the effect of the number of priority classes is examined.

  • PDF

수학사 활용에 대한 예비교사들의 인식 분석 (Analysis of Pre-Service Teachers' Perceptions on Utilizing History of Mathematics)

  • 심상길
    • 한국수학교육학회지시리즈E:수학교육논문집
    • /
    • 제24권3호
    • /
    • pp.831-842
    • /
    • 2010
  • 본 연구는 예비교사들을 대상으로 수학사 활용에 대한 인식을 조사하여 그 결과를 분석하는 연구를 수행하였다. 예비교사들은 수학사 활용에 대해 긍정적으로 생각하고 있고, 수업에 활용할 수 있는 수학사의 내용이 충분하다면 수업에 활용할 것이라고 답하였다. 또한, 교과서에 실린 수학사에 관련된 내용이 충분하지 않다고 생각하고 수학사에 대해 잘 모르기 때문에 학생을 지도할 때 수학사를 활용하지 못하며, 대부분의 예비교사들은 수학사를 학생들의 흥미와 동기 유발을 위한 자료로 생각하는 것으로 나타났다. 따라서 예비교사들이 수학사를 효과적으로 활용할 수 있도록 예비교사를 위한 교육과정에 수학사를 포함시키고, 더 나아가 수학 수업에서 수학사를 구체적으로 활용할 수 있는 교수-학습 자료의 개발과 수학사를 다양하게 활용하고 적용하는 방법에 대한 연구가 필요하다.

예비기술교사를 위한 로봇기술수업에서 성취과제분담 협동학습(STAD)의 실현 (Implementation of Student Teams Achievement Divisions (STAD) in a Robotic Technology Class for Pre-service High School Teachers)

  • 김성진;권혁수;정정윤
    • 대한공업교육학회지
    • /
    • 제40권1호
    • /
    • pp.180-200
    • /
    • 2015
  • 현재 로봇기술과 관련된 강의들은 수강생들의 다른 기초 지식 수준과 교수학습 방법에 관한 문제들을 가지고 있다. 이 연구는 이러한 문제점에 고려하여 성취과제분담 협동학습(STAD)의 모형을 로봇기술 입문 강의에 적용한 사례 연구이다. 이 강의에서 STAD학습 모형을 사용하여 다른 지식 수준을 가지고 있는 팀 구성원의 능력 향상에 초점을 두고 과제와 프로젝트와 같은 수업 활동을 통하여 서로 팀 구성원들이 협력하는데 관심을 가지게 된다. 이는 모든 구성원들이 팀 성과에 따라 같은 성적을 받게 되기 때문이다. STAD 학습의 성과는 로봇 기술과 관련된 기초 지식, 로봇 기술을 가르치기 위한 태도, 그리고 학습 영역에 대한 자신감과 교수 능력에 관하여 사전 평가와 사후 평가를 실시하였고 t 검정을 통하여 그 효과를 분석하였다. 이 연구의 참가자는 교사양성기관의 22명의 예비기술교사이다. 이 연구의 결과 로봇 기술과 관련된 기초 지식, 로봇 기술을 가르치기 위한 태도, 그리고 학습 영역에 대한 자신감과 교수 능력에 있어 향상된 성취를 보였다. STAD 학습은 특별한 상황에서 예비교사들에게 더 나은 학습 결과를 도출하기 위한 하나의 대안적인 방법이라 할 수 있다.

기준병상수와 상급병상수의 적정규모에 관한 연구 (A Study on the optimum scale of the number of beds of both the standard and the high-class)

  • 백승준;유승흠;손태용
    • 한국병원경영학회지
    • /
    • 제6권3호
    • /
    • pp.109-129
    • /
    • 2001
  • The purpose of this study was the acquisition of the optimum scale of the apportionment of standard & high-class bed for the maximum profit representative of the desire of customers in a General Hospital with 1,100 beds located in Seoul. This investigation was proceeded by the analysis of the result of the simulation with the survey of both the patients' needs for bed and the degree of the medical service by the grade of the ward. And finally the consequence was obtained as follows: 1. The result of the investigation of the inpatients' preference for the grade of ward classes shows that a private ward reflected 4.3 percent, a semi-private ward 1.7 percent, a three-bed ward 0.1 percent, and a ward with six beds 93.9 percent each other. 2. A questionnaire poll was paralleled of service terms of a medical doctor and a nurse by ward class, the data were used for the standard of the allotment of labor cost by the ward class. The poll shows that the service tenn of a medical doctor and a nurse based on a ward with six beds by ward class showed 1.7 times in internal medicine and 1.9 times in surgery at a private ward; 1.4 times in internal medicine and 1.7 times in surgery at a semi-private room; and 1.2 times both in internal medicine and in surgery at a three-bed ward 3. The resultant findings revealed the most profit per bed and per patient in a private ward. However, an analysis of profit with a standard of unit area by ward class represented a higher profit in both the internal medicine and the surgery semi-private ward than other ward classes. 4. The result of the analysis through simulation based on the data of the prime cost per the ward class proved the optimum scale of the distribution of beds by class as follows: sixteen beds of the internal medicine and twenty three beds of the surgery in the private ward; two hundreds and two of the internal medicine and one hundred and ninety eight of the surgery in the semi-private room; three of both the internal medicine and the surgery each other in the three-bed ward; one hundred and ninety eight of the internal medicine and two hundred and fifty two of the surgery in the ward with six beds. The result of this research exhibits that the income and expenditure of the hospital could be improved by changing parts of wards into private ones(containing the maximum profit per a unit of width) in case the scale of the number of beds is reset with the consideration of the profit per the unit width. In the near future it's strongly expected that the research for the more scientific standard of the allotment of labour cost by ward class and for definition of the optimum scale of the number of beds that actualize the maximum profit with the change of the three elements of the prime cost: cost of materials; labor costs; management expenses.

  • PDF

플립러닝 교수-학습 방법을 활용한 예비교사의 과학교육론 수업 적용 (The Application of Science Education Lecture for Pre-Service Teacher Using Teaching-Learning Method Based on Flipped Learning)

  • 전영주;윤마병
    • 한국과학교육학회지
    • /
    • 제36권3호
    • /
    • pp.499-507
    • /
    • 2016
  • 예비과학교사 교육에서 강의식 수업의 한계를 극복하고, 디지털 네이티브 세대들에게 적합한 학습자 중심의 교육을 위하여 플립러닝 수업을 시도했다. 플립러닝 교수-학습 원리를 일반적인 수업모형(ADDIE)에 적용하여 수업을 계획하고, 학습 자료를 개발했다. 개발된 플립러닝 학습 자료와 수업 설계에 대하여 전문가 패널의 델파이 방법과 타당도 검사를 통해 CVR .75 이상으로 검증 받았다. 플립러닝 수업자료를 과학교육론 강좌에 적용하여 교수 효과를 분석한 결과, 학생들의 학습동기와 흥미, 학습에 대한 자신감을 높이는데 도움이 되었지만, 학생들의 강의 만족도는 이전의 강의식 수업과 비교하여 30% 이상 떨어졌고, 학업 성취도 향상에 대한 자기 확신도 부족했다. 성공적인 플립러닝 수업을 위해서는 교수자-학생 간 의사소통과 개별화 수업이 충분하게 이루어질 수 있는 소인수 학급을 대상으로 해야하며 학습자의 학습 부담을 줄이고, 선행학습 동영상 자료의 접근성을 강화해야 한다.

USB에 기반한 홈 제어 시스템 개발 (Development of The Home Control System Base on USB)

  • 이창구;김희선
    • 제어로봇시스템학회논문지
    • /
    • 제12권4호
    • /
    • pp.405-410
    • /
    • 2006
  • This paper presents the design of a USB home controller and a home control system that specially is focused on controlling home appliances as a part of home network systems, the implementation of the USB device access class in an OSGi service platform and a home security system as an application. Designed USB home controllers are able to control various home appliances. They can be used not only to control big home appliances like a boiler but also to control small home appliances like a toaster because they are low-cost solutions. The USB home controller supports real time control using the interrupt transfer of the USB specification. And It is easy to use by homemakers who have no technical knowledge of the system because they just plug and unplug it in a home server then it automatically joins and leaves a home control system. This technique is based on hot-plug and the USB Device Access class in an OSGi Service Platform. The USB Device Access class supports the coordination of automatic detection and attachment of the USB home controller on an OSGi Service Platform, and it downloads and installs device drivers on demand. For an application, we implemented and tested a home security system using two USB home controllers and a CDMA module.

객체지향적 분석에 따른 SMIL 구조변환 및 모델링 (Enhancement of SMIL by Changing Structure and Modeling Depending Upon Object Oriented Analysis)

  • 권오현
    • 한국멀티미디어학회논문지
    • /
    • 제7권9호
    • /
    • pp.1304-1311
    • /
    • 2004
  • SMIL(Synchronized Multimedia Integration Language)은 각종 멀티미디어 데이터들 간의 동기화를 지원해 주며 데이터 요소들의 화면 구성을 편리하게 해줌으로써 인터넷 환경의 가상강의, 방송 등에서 널리 활용되고 있다. 응용분야가 다양하게 확대됨에 따라 각각의 환경에 융통성 있게 적용할 수 있는 체계의 필요성이 증대되고 있는 추세이며 이에 따라 SMIL 기능도 계속적으로 진화되고 있다. 본 논문에서는 SMIL의 주요 기능을 객체 지향적 방법론에 따라 분석, 모델링 한 후 서비스 컴비네이터 (service combinator) 개념의 클래스 모델을 제안하여 설계함으로써 필요시 사용자들이 자기 환경에 맞게 튜닝 할 수 있도록 하였다.

  • PDF

기혼여성의 취업이 가구의 소비패턴과 산업별 노동수요에 미치는 영향 (Impacts of Married Women's Employment on Household Consumption Pattern and Industrial Labor Demand)

  • 최바울
    • 노동경제논집
    • /
    • 제36권1호
    • /
    • pp.93-129
    • /
    • 2013
  • 본 논문은 기혼여성의 취업으로 인해 발생된 소비패턴의 변화와 그로 인해 야기되는 산업별 산출액의 변화 및 노동수요 파생효과를 추정하였다. 분석 결과, 맞벌이가구 증가에 따라 교통비와 교육비, 외식비, 가사서비스 등의 소비가 증가하였다. 이러한 소비패턴 변화로 인해 교육 및 보건업, 음식 숙박업 등 시장서비스업의 노동수요 증가가 야기되었다. 특히 고학력 및 중산층 이상의 기혼여성의 취업 시 취업유발효과가 높았으며, 그로 인해 저숙련 업종의 노동수요를 파생시킬 것으로 추정된다.

  • PDF

무선 망에서의 지연 비례 인터넷 차별화 서비스 제공을 위한 스케줄링 알고리즘 (Wireless Packet Scheduling Algorithm for Delay Proportional Internet Differentiated Services)

  • 유상조;이훈철
    • 대한전자공학회논문지TC
    • /
    • 제40권6호
    • /
    • pp.225-236
    • /
    • 2003
  • 본 논문에서는 인터넷 차별화 서비스 구조인 지연 비례 서비스를 무선 망 환경에서도 제공할 수 있는 WDPS(Wireless Delay Proportional Service) 스케줄링 알고리즘을 제안한다. WDPS는 무선 망의 버스트 하고 위치-종속적인 채널 에러 특성을 고려하여 현재까지 서비스 된 클래스간 지연 서비스 정도를 근거로 적응적으로 다음에 서비스할 클래스를 선택한다. 제안된 스케줄링 방법은 무선 망 에러로 생기는 클래스큐의 블록킹 문제를 해결하고, 클래스간 공정한 지연 서비스 품질을 제공하며 서비스 보상이 점진적으로 이루어져 하나의 클래스가 독점적으로 무선자원을 사용하지 못하도록 하였다. 모의 실험에서는 제안된 WDPS 스케줄링 방법을 사용하여 기존 인터넷 지연 차별화 서비스를 무선 망에서도 원하는 서비스 요구조건에 맞게 서비스 할 수 있음을 보였다.

연세지역(延世地域)에 대(對)한 보건기초조사(保健基礎調査) (A Basie Health Survey of the Yonsei Community Health Service Area, Seoul)

  • 양재모;김명호
    • Journal of Preventive Medicine and Public Health
    • /
    • 제1권1호
    • /
    • pp.25-36
    • /
    • 1968
  • Introduction In order to improve medical education through the introduction of a concept of comprehensive health care of a community, an area surrounding the University Campus was chosen for the Community Health Service Project. It has been on operation for last 4 years with its major emphasis on family planning services, and maternal and child health care. The major objectives of this survey at the area are to obtain: 1) The demographic data, 2) The health need and trend of medical care, 3) The attitude and practice in maternity care to be used for further improvement of the planning and the services of the project. Population and Survey Method Out of three Dongs of the Community Health Service Area, only two Dongs namely Changchun and Yonhee were selected for the survey. Total number of households and population in the area studied was 3,683 and 21,857 respectively. An interview was performed with questionnaire schedule which was recorded by interviewers. This includes the degree of utilization of health services provided by the Community Health Service Program such as family planning, prenatal care during their last pregnancy, delivery history and complications of the delivery as well as the incidence of illnesses in general. Prior to the interview, all interviewers were trained for interviewing technique for two days. The survey was carried out during the period from October December 1967. Results 1) Demographic Data : 41.3% of the population studied were children under age 15 and only 3.5% were over 60 years of age. Crude birth rate and crude death rate of this area studied during the period of November 1966-October 1967 were 20.5 and 7.7 respectively. Infant mortality rate during the same period was 35.9. 50.4% of the 2,832 households fell into the category of middle class, 39.8% to the lower class and 9.5% to the upper class in economic condition. 19.8% of 2,832 householders had no formal education, 22.7% primary school, and 57.5% middle or higher school education. 2) Health Status and Utilization of the Community Health Service: Those who suffered from many illnesses during the month of October, 1967 were 690(4.6% of 14,891 persons). Classification of these patients into the type of disease shown respiratory diseases 27.4%, gastrointestinal diseases 18.1%, tuberculosis 10.9%, skin and genitourethral diseases 4.5% and gynecologic patients 4.5%. Only 55.9% of the patients received medical care at hospital or doctor's clinic. But among TB and gynecologic patients, 70.7% and 72.4% were treated at medical facilities. 10.6% of 2,832 householders interviewed has ever utilized the Community Health Service Program provided by the Yonsei Medical School, Classifying these clients into the type of service, 35.9% utilized the wellbaby clinic, 31.0% the family planning clinic, 14.7% the home delivery care, and the rest utilized other services such as the premarital guidance cinlic and the sanitary inspection service. 3) Maternity Care: 23.6% of 2,151 deliveries were done at medical facilities such as hospital, private clinic, while 76.4% were done at home. Acceptance rate of prenatal care was 32.6% as whole, but 49.6 of 774 women who had the prenatal care service had their deliveries at medical facility. 45.1% of total deliveries were attended by medical and or paramedical personnel. 75.8% of the deliveries of those received prenatal care were attended by medical and or paramedical personnel while only 27.8% of the deliveries of those who did not have prenatal care attended by medical and or paramedical personnel. 49.8% of deliveries of the upper class, 29.8% of the middle class and 9.9% of the lower class were attended by medical and or paramedical personnel. 6.2, 3.3% and 24.8% of mothers reported about their xeperience of edema, coma and fever during the period of trimester of pregnancy and puerperium. 4) Family Planning: The rate of practice of family planning was 27.9%. 31.7% of them were by IUD, 2.9% by oral pill, 15.2% by sterilization and the rest by traditional methods. Those women who had 3 to 4 children had highest(30.2%). Practice rate among the various methods of family planning, oral pill was the most popular method to whom had 2 or less children. In relation between the practicing rate of family planning and living standard, the upper, middle and lower class practiced 37.5, 29.4 and 19.9% respectively.

  • PDF