• 제목/요약/키워드: science concept instruction

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온라인 과학 기사 텍스트 마이닝을 통해 분석한 에너지 용어 사용의 맥락 (Analyzing Different Contexts for Energy Terms through Text Mining of Online Science News Articles)

  • 오치영;강남화
    • 과학교육연구지
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    • 제45권3호
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    • pp.292-303
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    • 2021
  • 본 연구에서는 일상생활에서 에너지 용어가 사용되는 맥락을 알아보기 위하여 온라인 과학 기사를 수집하여 언어 네트워크, 토픽 모델링 분석 기법을 활용해 에너지 관련 기사에 사용된 용어의 빈도, 용어 네트워크, 기사의 주제를 분석하였다. 분석에 사용된 자료는 2018.3.1.부터 1년간의 온라인 과학 분야의 기사 중 에너지를 검색어로 하여 10개의 국내 중앙지에서 검색 및 선정된 2,171편이다. 이 기사들을 자연어 처리하여 51,224개의 문장과 507,901개의 단어로 데이터를 구성하였다. R 프로그램을 활용하여 용어 빈도수 분석 및 언어 네트워크 분석을 실시하였고, 에너지 용어 사용의 맥락 탐색을 위해 구조적 토픽 모델링 분석을 적용해 기사의 주제를 도출하였다. 기사에 사용된 용어 중 빈도수가 유난히 높은 용어는 기술, 연구, 개발로 새로운 소식을 알리는 기사의 특성을 반영한 것으로 나타났다. 한편, 기사 2편당 한 번 이상의 빈도로 사용되는 용어에는 산업 관련 용어(산업, 제품, 시스템, 생산, 시장)와 '전기', '환경'과 같이 에너지 관련 용어로 충분히 기대되는 용어들이 있었다. 한편, 에너지 관련 과학 수업에서 자주 사용되는 '태양', '열', '온도', '발전'도 빈도수 상위에 속하는 용어로 드러났다. 용어 네트워크 분석에서는 산업 및 기술과 관련된 용어와 기초과학 및 연구 관련 용어들이 약한 강도이지만 서로 군집을 이루는 것을 확인하였다. 한편, 에너지와 쌍을 이루는 용어의 분석에서는 '에너지 효율'을 비롯해 '에너지 절감', '에너지 소비' 등과 같이 에너지의 사용에 관한 용어들이 다수를 이루고 그 사용 빈도가 가장 높았다. 에너지 용어가 사용되는 맥락은 16개의 주제를 분류한 4가지 영역으로 '첨단산업', '산업', '기초과학', '환경 및 건강'으로 나타났다. 에너지 사용 관련 용어가 상당히 많이 사용된다는 결과는 에너지 수업의 시작점으로 에너지 저급화 개념의 도입이 효과적일 수 있음을 시사한다. 또한, 첨단산업이나 환경 및 건강의 맥락을 에너지 학습에 도입할 필요성도 보여준다. 본 연구에서 드러난 16개 주제에서 보이는 다양한 에너지 용어가 사용되는 맥락을 재구성해 에너지 관련 수업에 활용한다면 학생들이 학교에서의 에너지 학습과 일상적 상황을 통합적으로 인식하는 데 도움이 될 것이다.

간호원의 환자교육 활동에 관한 연구 (Study of Patient Teaching in The Clinical Area)

  • 강규숙
    • 대한간호학회지
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    • 제2권1호
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    • pp.3-33
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    • 1971
  • Nursing of today has as one of its objectives the solving of problems related to human needs arising from the demands of a rapidly changing society. This nursing objective, I believe, can he attained by the appropriate application of scientific principles in the giving of comprehensive nursing care. Comprehensive nursing care may be defined as nursing care which meets all of the patient's needs. the needs of patients are said to fall into five broad categories: physical needs, psychological needs, environmental needs, socio-economic needs, and teaching needs. Most people who become ill have adjustment problems related to their new situation. Because patient teaching is one of the most important functions of professional nursing, the success of this teaching may be used as a gauge for evaluating comprehensive nursing care. This represents a challenge foe the future. A questionnaire consisting of 67 items was distributed to 200 professional nurses working ill direct patient care at Yonsei University Medical Center in Seoul, Korea. 160 (80,0%) nurses of the total sample returned completed questionnaires 81 (50.6%) nurses were graduates of 3 fear diploma courser 79 (49.4%) nurses were graduates of 4 year collegiate nursing schools in Korea 141 (88,1%) nurses had under 5 years of clinical experience in a medical center, while 19 (11.9%) nurses had more than 5years of clinical experience. Three hypotheses were tested: 1. “Nurses had high levels of concept and knowledge toward patient teaching”-This was demonstrated by the use of a statistical method, the mean average. 2. “Nurses graduating from collegiate programs and diploma school programs of nursing show differences in concepts and knowledge toward patient teaching”-This was demonstrated by a statistical method, the mean average, although the results showed little difference between the two groups. 3. “Nurses having different amounts of clinical experience showed differences in concepts and knowledge toward patient teaching”-This was demonstrated by the use of a statistical method, the mean average. 2. “Nurses graduating from collegiate programs and diploma school programs of nursing show differences in concepts and knowledge toward patient teaching”-This was demonstrated by a statistical method, the mean average, although the results showed little difference between the two groups. 3. “Nurses having different amounts of clinical experience showed differences in concepts and knowledge toward patient teaching”-This was demonstrated by the use of the T-test. Conclusions of this study are as follow: Before attempting the explanation, of the results, the questionnaire will he explained. The questionnaire contained 67 questions divided into 9 sections. These sections were: concept, content, time, prior preparation, method, purpose, condition, evaluation, and recommendations for patient teaching. 1. The nurse's concept of patient teaching: Most of the nurses had high levels of concepts and knowledge toward patient teaching. Though nursing service was task-centered at the turn of the century, the emphasis today is put on patient-centered nursing. But we find some of the nurses (39.4%) still are task-centered. After, patient teaching, only a few of the nurses (14.4%) checked this as “normal teaching.”It seems therefore that patient teaching is often done unconsciously. Accordingly it would he desirable to have correct concepts and knowledge of teaching taught in schools of nursing. 2. Contents of patient teaching: Most nurses (97.5%) had good information about content of patient teaching. They teach their patients during admission about their diseases, tests, treatments, and before discharge give nurses instruction about simple nursing care, personal hygiene, special diets, rest and sleep, elimination etc. 3. Time of patient teaching: Teaching can be accomplished even if there is no time set aside specifically for it. -a large part of the nurse's teaching can be done while she is giving nursing care. If she believes she has to wait for time free from other activities, she may miss many teaching opportunities. But generally proper time for patient teaching is in the midmorning or midafternoon since one and a half or two hours required. Nurses meet their patients in all stages of health: often tile patient is in a condition in which learning is impossible-pain, mental confusion, debilitation, loss of sensory perception, fear and anxiety-any of these conditions may preclude the possibility of successful teaching. 4. Prior preparation for patient teaching: The teaching aids, nurses use are charts (53.1%), periodicals (23.8%), and books (7.0%) Some of the respondents (28.1%) reported that they had had good preparation for the teaching which they were doing, others (27.5%) reported adequate preparation, and others (43.8%) reported that their preparation for teaching was inadequate. If nurses have advance preparation for normal teaching and are aware of their objectives in teaching patients, they can do effective teaching. 5. Method of patient teaching: The methods of individual patient teaching, the nurses in this study used, were conversation (55.6%) and individual discussion (19.2%) . And the methods of group patient teaching they used were demonstration (42.3%) and lecture (26.2%) They should also he prepared to use pamphlet and simple audio-visual aids for their teaching. 6. Purposes of patient teaching: The purposes of patient teaching is to help the patient recover completely, but the majority of the respondents (40.6%) don't know this. So it is necessary for them to understand correctly the purpose of patient teaching and nursing care. 7. Condition of patient teaching: The majority of respondents (75.0%) reported there were some troubles in teaching uncooperative patients. It would seem that the nurse's leaching would be improved if, in her preparation, she was given a better understanding of the patient and communication skills. The majority of respondents in the total group, felt teaching is their responsibility and they should teach their patient's family as well as the patient. The place for teaching is most often at the patient's bedside (95.6%) but the conference room (3.1%) is also used. It is important that privacy be provided in learning situations with involve personal matters. 8. Evaluation of patient teaching: The majority of respondents (76.3%,) felt leaching is a highly systematic and organized function requiring special preparation in a college or university, they have the idea that teaching is a continuous and ever-present activity of all people throughout their lives. The suggestion mentioned the most frequently for improving preparation was a course in patient teaching included in the basic nursing program. 9. Recommendations: 1) It is recommended, that in clinical nursing, patient teaching be emphasized. 2) It is recommended, that insertive education the concepts and purposes of patient teaching he renewed for all nurses. In addition to this new knowledge, methods and materials which can be applied to patient teaching should be given also. 3) It is recommended, in group patient teaching, we try to embark on team teaching.

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Hardware Approach to Fuzzy Inference―ASIC and RISC―

  • Watanabe, Hiroyuki
    • 한국지능시스템학회:학술대회논문집
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    • 한국퍼지및지능시스템학회 1993년도 Fifth International Fuzzy Systems Association World Congress 93
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    • pp.975-976
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    • 1993
  • This talk presents the overview of the author's research and development activities on fuzzy inference hardware. We involved it with two distinct approaches. The first approach is to use application specific integrated circuits (ASIC) technology. The fuzzy inference method is directly implemented in silicon. The second approach, which is in its preliminary stage, is to use more conventional microprocessor architecture. Here, we use a quantitative technique used by designer of reduced instruction set computer (RISC) to modify an architecture of a microprocessor. In the ASIC approach, we implemented the most widely used fuzzy inference mechanism directly on silicon. The mechanism is beaded on a max-min compositional rule of inference, and Mandami's method of fuzzy implication. The two VLSI fuzzy inference chips are designed, fabricated, and fully tested. Both used a full-custom CMOS technology. The second and more claborate chip was designed at the University of North Carolina(U C) in cooperation with MCNC. Both VLSI chips had muliple datapaths for rule digital fuzzy inference chips had multiple datapaths for rule evaluation, and they executed multiple fuzzy if-then rules in parallel. The AT & T chip is the first digital fuzzy inference chip in the world. It ran with a 20 MHz clock cycle and achieved an approximately 80.000 Fuzzy Logical inferences Per Second (FLIPS). It stored and executed 16 fuzzy if-then rules. Since it was designed as a proof of concept prototype chip, it had minimal amount of peripheral logic for system integration. UNC/MCNC chip consists of 688,131 transistors of which 476,160 are used for RAM memory. It ran with a 10 MHz clock cycle. The chip has a 3-staged pipeline and initiates a computation of new inference every 64 cycle. This chip achieved an approximately 160,000 FLIPS. The new architecture have the following important improvements from the AT & T chip: Programmable rule set memory (RAM). On-chip fuzzification operation by a table lookup method. On-chip defuzzification operation by a centroid method. Reconfigurable architecture for processing two rule formats. RAM/datapath redundancy for higher yield It can store and execute 51 if-then rule of the following format: IF A and B and C and D Then Do E, and Then Do F. With this format, the chip takes four inputs and produces two outputs. By software reconfiguration, it can store and execute 102 if-then rules of the following simpler format using the same datapath: IF A and B Then Do E. With this format the chip takes two inputs and produces one outputs. We have built two VME-bus board systems based on this chip for Oak Ridge National Laboratory (ORNL). The board is now installed in a robot at ORNL. Researchers uses this board for experiment in autonomous robot navigation. The Fuzzy Logic system board places the Fuzzy chip into a VMEbus environment. High level C language functions hide the operational details of the board from the applications programme . The programmer treats rule memories and fuzzification function memories as local structures passed as parameters to the C functions. ASIC fuzzy inference hardware is extremely fast, but they are limited in generality. Many aspects of the design are limited or fixed. We have proposed to designing a are limited or fixed. We have proposed to designing a fuzzy information processor as an application specific processor using a quantitative approach. The quantitative approach was developed by RISC designers. In effect, we are interested in evaluating the effectiveness of a specialized RISC processor for fuzzy information processing. As the first step, we measured the possible speed-up of a fuzzy inference program based on if-then rules by an introduction of specialized instructions, i.e., min and max instructions. The minimum and maximum operations are heavily used in fuzzy logic applications as fuzzy intersection and union. We performed measurements using a MIPS R3000 as a base micropro essor. The initial result is encouraging. We can achieve as high as a 2.5 increase in inference speed if the R3000 had min and max instructions. Also, they are useful for speeding up other fuzzy operations such as bounded product and bounded sum. The embedded processor's main task is to control some device or process. It usually runs a single or a embedded processer to create an embedded processor for fuzzy control is very effective. Table I shows the measured speed of the inference by a MIPS R3000 microprocessor, a fictitious MIPS R3000 microprocessor with min and max instructions, and a UNC/MCNC ASIC fuzzy inference chip. The software that used on microprocessors is a simulator of the ASIC chip. The first row is the computation time in seconds of 6000 inferences using 51 rules where each fuzzy set is represented by an array of 64 elements. The second row is the time required to perform a single inference. The last row is the fuzzy logical inferences per second (FLIPS) measured for ach device. There is a large gap in run time between the ASIC and software approaches even if we resort to a specialized fuzzy microprocessor. As for design time and cost, these two approaches represent two extremes. An ASIC approach is extremely expensive. It is, therefore, an important research topic to design a specialized computing architecture for fuzzy applications that falls between these two extremes both in run time and design time/cost. TABLEI INFERENCE TIME BY 51 RULES {{{{Time }}{{MIPS R3000 }}{{ASIC }}{{Regular }}{{With min/mix }}{{6000 inference 1 inference FLIPS }}{{125s 20.8ms 48 }}{{49s 8.2ms 122 }}{{0.0038s 6.4㎲ 156,250 }} }}

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임업기술(林業技術) 및 직업훈련(職業訓練)에 고려(考慮)되어야 할 사항(事項) (Considerable Aspects for Technical and Vocational Training in Forestry)

  • 마상규
    • 한국산림과학회지
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    • 제51권1호
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    • pp.56-65
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    • 1981
  • 건전(健全)한 산림경영(山林経営)의 추진(推進)과 임업(林業)의 고용효과(雇傭効果)를 증대(増大)시키기 위하여 일선(一線)의 임업기술자(林業技術者)(산림경영학자수준(山林経営学者水準))에 대한 새로운 기술훈련(技術訓練)과 임업노동자(林業労動者)에 대한 직업훈련(職業訓練)이 가능한(可能限) 조속(早速)히 착수(着手)되어야 할 것이다. 이에 고려(考慮)되어야할 사항(事項)들을 간추려 보았다. 1. 일정(一定)한 산림면적(山林面積)을 직접(直接) 경영(経営) 담당(擔当)하고 있는 임업기술자(林業技術者)들이 건전(健全)한 산림경영(山林経営)을 추진(推進)해 가는데 필요(必要)한 기술(技術)이 갖추어야 할 것이고 이를 위해 생태학적(生態學的)이고 경제적(経剤的)인 개념을 바탕으로한 신기술훈련(新技術訓練)이 보급되어야 된다. 2. 임업(林業)의 고용효과(雇傭効果)와 노동능률(労動能率)을 높이기 위해 임업노동자(林業労動者) 수준(水準)에 대한 직업훈련(職業訓練)과 이들에 대한 체계적(体系的)인 기술훈련기법(技術訓練技法)이 도입(導入)되어야 할것이며, 사업노동자(事業労動者)에 대해서는 집약훈련(集約訓練)을, 겸업(兼業) 및 산주작업(山主作業)을 위해서는 작업장(作業場)을 순회하면서 훈련(訓練)을 시키고 일고용자(日雇用者)나 부락민(部落民) 작업시(作業時)는 숙련(熟練)된 임업노동자(林業労動者)가 훈련(訓練)을 시키는 제도(制度)가 발전되어야 할 것이다. 3. 기술훈련(技術訓練)을 시키는 시초단계(始初段階)에서는 이들의 현실태(現実態)를 조사분석후(調査分析後) 이에 맞는 충실한 훈련내용(訓練內容)이 되도록 관계 교관(敎官)과 전문가(專門家)의 협조(協助)된 노력(努力)이 요구되면 이들의 훈련(訓練)은 현실경영림(現実経営林)에서 이루어져야 할것이고 경영림(経営林)의 장(長)의 책임하에 이루어질 수 있는 제도(制度)의 발전(発展)이 요구(要求)되고 있다. 4. 시초단계(始初段階)의 교관(敎官)들은 실습림(実習林)의 관계관(関係官)들도 포함시켜 외부(外部) 또는 내부(內部)에 있는 전문가(專門家)들의 도움으로 비교적(比較的) 장기간(長期間) 집약적(集約的) 훈련(訓練)을 시켜야 될 것이다. 5. 훈련대상자별(訓練対象者別)로 갖추어야할 지식(知識)과 기술분야(技術分野)를 제시(提示)하였다. 이 내용(內容)은 이들이 갖추어야 할 기술분야(技術分野)를 뜻한 것이다. 6. 훈련(訓練)과 실제 산림경영(山林経営)에 필요(必要)한 임업기술(林業技術)을 우리의 현실(現実)과 경영목적(経営目的)에 맞도록, 체계화(体系化) 내지 근대화(近代化) 시키기 위해서는 각계각층(各界各層)에 흩어져 있는 학자(学者) 기술자(技術者)들의 총화된 협력(協力)이 필요(必要)로 하고 있다. 이들의 지식(知識)과 기술(技術) 및 경험(経験)을 취합하여 우리의 기술(技術)로 체계화(体系化)시키고 발전(発展)시키는 제도적(制度的) 대책(対策)이 또한 요구(要求)되고 있다. 이들이 총화된 노력(努力)을 발휘할 수 있는 터전인 어떠한 조직(組織)을 관계기관(関係機関)에서 육성지원(育成支援)해 주는 것이 바람직 하다. 7. 전문노동자(專門労動者)에 대해서는 작업기술(作業技術)과 작업계획(作業計㓰)의 발전(発展)을 통해 통년작업량(通年作業量)이 배정(配定)되어야 하며 아직 벌출작업량(伐出作業量)이 적고 악천후(惡天候)가 상재(常在)하고 있는 상황하(状況下)에서 실내작업조직(室內作業組織)과 부업지원대책(副業支援対策)이 그들의 건전(健全)한 생활(生活)을 위해 고려하지 않을 수 없다. 8. 임업(林業)의 노무관리제도(勞務管理制度)가 관계기관(関係機関)에 도입(導入)되어 노동문제(労動問題)를 효과적(効果的)으로 발전(発展)시키고 금후(今後) 임업고용효과(林業雇傭効果)를 증대(増大)시키는데 기여 되어야 할 것이다. 9. 임업용(林業用) 기기(機器) 및 장비(裝備)의 개량(改良)과 공급대책(供給対策)이 세워져 훈련(訓練)된 자(者)들이 현지(現地)에서 이용(利用)할 수 있도록 되어야 한다. 그렇지 않으며 훈련(訓練)의 성과(成果)는 다시 원점으로 돌아가게 되어 그 성과(成果)를 얻지 못하게 될것이다.

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