• 제목/요약/키워드: don't-care condition

검색결과 14건 처리시간 0.031초

Derivations of Single Hypothetical Don't-Care Minterms Using the Quasi Quine-McCluskey Method

  • 김은기
    • 한국산업정보학회논문지
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    • 제18권1호
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    • pp.25-35
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    • 2013
  • Automatically deriving only individual don't-care minterms that can effectively reduce a Boolean logic expressions are being investigated. Don't-care conditions play an important role in optimizing logic design. The type of unknown don't-care minterms that can always reduce the number of product terms in Boolean expression are referred as single hypothetical don't-care (S-HDC) minterms. This paper describes the Quasi Quine-McCluskey method that systematically derives S-HDC minterms. For the most part, this method is similar to the original Quine-McCluskey method in deriving the prime implicants. However, the Quasi Quine-McCluskey method further derives S-HDC minterms by applying so-called a combinatorial comparison operation. Upon completion of the procedure, the designer can review generated S-HDC minterms to test its appropriateness for a particular application.

다중화기 기반 논리 설계를 위한 무정의 조건의 고찰 (아두이노 설계 교육에의 활용을 위한) (Consideration of Don't-care Condition for Multiplexer-based Logic Design (For Application to Arduino-based Design Education))

  • 이재민
    • 디지털콘텐츠학회 논문지
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    • 제18권5호
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    • pp.881-888
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    • 2017
  • 다중화기를 이용한 논리설계는 구조적 디지털 시스템 설계에서 설계의 편리성과 유연성을 위한 유용한 방법으로 사용되어왔다. 본 논문에서는 다중화기(multiplexer : MUX) 기반 논리설계에서 종래의 연구들에서 세밀히 다루지 않았던 무정의 조건(don't care condition)이 논리최적화에 미치는 영향을 분석해보고 단일 다중화기 기반의 설계와 복수 다중화기 기반의 설계를 위한 무정의 조건의 활용방법을 제시한다. 특히 데이터 입력의 개수가 $2^m$개보다 적은 경우(선택선의 개수는 m개일 때)의 설계방법을 고찰한다. 제시하는 기법을 디지털논리설계 교육과 관련하여 최근 창의적 공학교육에서 크게 활용되고 있는 아두이노(Arduino)를 이용한 마이크로프로세서 설계와 연계하여 활용하는 방법에 대해서도 기술한다.

복수 패턴 인식을 위한 변형된 네오코그니트론 (Modified neocognitron for recognizing multi-patterns)

  • 김태우;최병욱
    • 전자공학회논문지B
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    • 제31B권10호
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    • pp.140-148
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    • 1994
  • 본 논문에서는 입력영상에 존재하는 복수 패턴을 한번의 패스(pass)로 인식할 수 있는 변형된 네오코그니트론을 제안한다. 변형된 네오코그니트론은 특징을 추출하는 S세포층 및 V세포층과 패턴의 크기, 이동, 회전 등 변형에 덜 민감하게 하는 C세포층으로 구성된 계층적 신경망이다. S세포와 V세포들은 DCC(don't care condition)을 적용하여 영상에 존재하는 모든 패턴에 대한 특징을 추출하는 역할을 하며, S세포와 C세포는 추출된 패턴에 대한 위치정보도 함께 가진다. 위치정보는 추출된 특징들이 서로 간섭을 받지 않고 올바른 특징만이 추출되도록 하는 데 이용된다. 제안한 방법은 피드백이 존재하는 선택적 주의 방법과는 달리 단일패스로 인식이 가능하므로 인식시간이 짧으며, DCC와 위치정보를 이용하므로 서로 접촉되어 있는 복수 패턴의 인식도 가능하다.

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말기 암 환아 부모가 경험하는 어려움 (The Difficulties for Parents of Children with Terminal Cancer)

  • 강경아;김신정
    • Child Health Nursing Research
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    • 제11권2호
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    • pp.229-239
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    • 2005
  • Purpose: The objective of this study was to provide an understanding of the difficulties for facing parents of children with terminal cancer. Method: The design of this study was an inductive and descriptive study. Thirty???]one parents of children with terminal cancer participated in???]depth were interviewed s. C in depth and content analysis was used for analyzing the data. Results: The main categories in the findings were 'difficulties in coping', 'physical and psychological suffering of children', 'suffering of family', 'bereavement with children', 'economic problems', 'incurable situation', 'preparation of death', 'social isolation', 'coping after a child dies', 'spiritual problems', receiving active treatment', 'informing children of their condition', 'a sense of meaninglessness', 'emotional iunstability', and 'giving up hope'. Conclusion: The main point identified from this result in this study was that parents who have a child with terminal cancer don't never give up the hope of recovery for their child even when the child is in by the terminal stage of their children, even though and they are unwillingly to prepare for their child's death. This is a unique characteristic in the attitude of the families' attitude in child hospice care and differs from that found in adult hospice care. This result can be used as an important guide for nurses to in assessing the parents' needs in the terminal care setting.

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어린이집 건물, 실외놀이터 및 설비 특성에 관한 실태조사 (A Study on Characteristics of Building, Outdoor Playground & Equipment in Child Care Center)

  • 변혜령;최목화;소갑수
    • 한국주거학회논문집
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    • 제24권6호
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    • pp.9-18
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    • 2013
  • Recently, interest and social expectation for children's environment are on the rise. The needs for construction of safe and pleasant child care environment has bees agreed with. Especially, as the number of children who are wanted to go center jumped with additional support the government for child care business, centers have also seen a boost. But as number of child care centers increases rapidly in short period, the quality of centers is more inferior to before. and the space and facility level of many centers don't reach in legal minimum standard. In addition to, when child care centers are reviewed, it tend to be judged by one standard without considering connection with sense of values about child care or philosophy, child's traits, surrounding environment etc. Therefore, it is important to construct environment that can consider children's physical development and behavioral characteristic as well as basic element such thing as protection and support activity for current child care centers. This study presupposes that physical environment of child care centers makes important effect on teacher's motion and child's development, then it is to investigate it's characteristics in physically space, facilities, outdoor playground. And It is to identify space and accommodations, outdoors facilities which can support activity smoothly inside and outside. As a result, it is try to offer appliable basic information about the child-friendly environment of child care centers.

일부 대학의 구강건강관리용품 사용과 구강위생에 관한 연구 (A Study on the Use of Oral Health Care Devices and the Oral Hygiene in Some Colleges)

  • 이선희;박일순
    • 한국산학기술학회논문지
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    • 제12권6호
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    • pp.2629-2635
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    • 2011
  • 본 연구는 2010년 11월 08일부터 11월 26일까지 일부 대학의 치위생과 1, 2학년 재학생 40명을 대상으로 구강건강관리용품의 사용실태와 세치제 사용량에 따른 구강위생효과에 관한 설문조사와 실험을 실시하였다. 수집된 자료는 SPSS WIN 15.0프로그램을 이용하여 분석하였으며 다음과 같은 결론을 얻었다. 1. 잇솔질 �疽쨈� 평상시 매식사 후 잇솔질 시행여부는 보통이다가 47.5%로 가장 많았으며 잠자기 전 잇솔질을 시행하는 경우가 47.5%로 가장 많았다. 일일 평균 잇솔질 횟수는 3회, 평상시 잇솔질 방법은 회전법이 대부분을 차지하였으며 지난 1년간 잇솔 교환횟수는 3회가 45.0%로 가장 많았다. 2. 구강위생보조용품 사용실태는 치실을 제외한 전동잇솔, 치간 칫솔, 구강양치액은 사용하지 않는 경우가 대부분을 차지하였다. 따라서 개개인의 구강환경에 적합한 구강건강관리 용품을 선택 사용하여 구강병을 예방할 수 있도록 하여야 할 것이다. 또한 세치제의 사용량에 따른 구강위생효과에는 큰 차이가 없는 것으로 나타났으므로 세치제의 낭비를 줄이기 위하여 잇솔질 시 0.3 g 이하의 세치제를 사용하도록 교육 및 홍보하여야 한다.

요양병원 의료비 및 의료서비스 정책 (Nursing Hospital Medical Expenses and Medical Service Policy)

  • 김호영;김동일
    • 디지털정책학회지
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    • 1권1호
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    • pp.21-26
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    • 2022
  • 본 연구에서는 요양병원이 입원비 지출 발생에 기여도가 큰점을 주목하여, 요양병원의 입원정책을 살펴보고, 불필요한 입원비발생을 유발한 점이 있다면, 해외사례를 참조하여 개선방안을 제안하고자 한다. 본 연구는 건강보험공단과 건강보험심사평가원에서 발행한 건강보험통계연보, 건강보험 주요통계를 주로 활용하여 연구를 진행하였다. 이를 바탕으로 요양병원이 입원비 발생에 가장 큰 기여를 한다는 것을 추론하였다. 본 연구 결과 요양병원의 입원규정이 명문화 되지 않았다는 문제점을 발견하였고, 명문화 되지않은 입원 기준이 불필요한 입원비 발생해 기여 할수 있다는 점을 발견하였고, 이를 극복하기 위한 개선방안을 우리보다 먼저 고령화를 경험한 미국의 사례에서 제안해보았다. 본연구를 시작으로 요양병원에서의 불필요한 입원비 지출을 줄인 보다 많은 외국의 사례들을 찾아야 할 것이다.

산욕초기 초산모의 간호목표달성방번 합의가 어머니 역할수행에 대한 자신감 및 만족도에 미치는 영향에 관한 실험적 연구 (An experimental study on the impact of an agreement on the means to achieve nursing goals in the early postpartum period of primiparous mothers and enhance their self-confidence and satisfaction in maternal role performance)

  • 이영은
    • 대한간호학회지
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    • 제22권1호
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    • pp.81-115
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    • 1992
  • The problem addressed by this study was to determine the effect of nurse - patient agreement on the means to achieve nursing goals in the early postpartum period of primiparous mothers. It was hypothesized that the experimental treatment would result in hegher self-confidence and satisfaction in maternal role performance. This purpose was to contribute to the planning of nursing care to enhance self- confidence and satisfaction in maternal role performance and to the development of relevant nursing theory. Especially, the early postpartum period is crucial toward in recovery from childbirth and attainment of the maternal role. Maternal role attaintment is a complex social and cognitive process of stimulus -response accomplished by learning. Most women attain the maternal role sucessfully. But, some primiparous mothers experience difficultites in attainment of the maternal role due to lack of experience and knowledge. Self-confidence and satisfaction in maternal role performance are important factors in attainment and adjustment to the maternal role (Mercer, 1981a, 1981b ; Lederman, Weigarten, and Lederman, 1981 :Bobak and Jensen, 1985). Nursing is defined as behaviors of nurses add patients that attain nursing goals through action, reaction, interaction, and transaction. For attainment of nursing goals, active participating transactions must occur by agreement on the means to achieve those goals through nurse -patient mutual goal setting and establishment of their active relationships(King, 1981, Ha, 1977). Based on King's theory of goal attainment (1981), this stuy was planned as a non-equivalent control group, non -synchronized quasi -experimental design using agreement on the means to achieve nursing goals in early postpartum as the experimental treatment. The data were collected from July 20 to Sep. 1, 1991 by questionnaires with 60 primiparous mothers planing to breast feed after normal deliveries at W hospital in Pusan, Korea. The subjects were divided into a control group(conventional group) -those admitted from July 20 to Aug. 12, and an experimental group(agreement group) - those admitted from Aug. 13 to Sep. 1. The instument for agreement on the means to nursing goals in the early postpartum period included five steps - identification of disturbances of problems through action, reaction, and interaction with primiparous mothers : mutual early postpartal nursing goal setting : exploration of the means to achieve goals ; agreement on the means (self- care, ealry maternal -infant contact, performance of mothering behavior, and communicating about the infant's behavior and health condition) : implementation of the means. This instrument was developed on the basis of King's elements that lead to transactions in nurse-patient interactions. Lederman et al's (1981) scale for Confidence in ability to cope with tasks of motherhood and Lederman et al's(1981) scale for Mother's satisfaction with motherhood and infant care were used to measure self-confidence and satisfaction in maternal role performance ·with the subjects immediately after admission and on the day of discharge. Self-care performance in the experimental group was measured by self -evaluation tool developed by the investigator from the literature concerned. The tools to measure Pelf-confidence and satisfaction in maternal role performance, and the tool to measure self-evaluation of self-care performance were tested for internal reliability. Cronbach's Alphas were 0.94, 0.94, and 0.63. The data were analysed by using in S.P.S.S. computerized program and included percentage, x²-test, t-test, ANOVA, and Pearson Correlation Coefficient. The conclusions obtained from this study are summerized as follows : 1. The degree of self-confidence in maternal role performance of the total subjects group measured before the experimental treatment was above average with a mean score of 2.77(range 2.14-3.64). Out of 14 items, those with relatively high mean scores were ‘I would like to be a better mother than I am’(3.95), and ‘I have my doubts about whether I am a good mother’(2.87). Those with low mean scores were ‘I know that my baby wants most of the times’(2.28), ‘When the baby cries, I can tell what she /he wants’(2.37), and ‘I have confidence in my ability to care for the baby’(2;50). That is, the self - confidence of Primiparous mothers was considerably high in mothering, but rather low in activities concerning the infant care and understanding of the infant behavior. The degree of satisfaction in maternal role performance of the total subjects group measured before the experimental treatment was high with a mean score of 3.18(range 1.92-3.92). Out of 13 items, those with relatively high mean scores were ‘I am glad 1 had this baby now’(3.75), ‘I play with the baby between feedings when s/he is awake and quiet’(3.67), and ‘I enjoy being a mother’(3.27). Those with low mean scores were ‘I am upset about having too many responsibilities as a mother’(2.78), ‘It bothers me to get up for the baby at night’(2.82), and ‘I get annoyed if the baby frequently interrupts my activities’.(2.82), That is, the satisfaction of primiparous mothers was considerably high in mothering and infant care, but rather low in restraints in time or on the mother's self accomplishment and development. 2. Agreement on the means to achieve nursing goals in the early postpartum period included process of mutual goal setting, exploration of the means to achieve goals, and ahreement in concert means to achieve goals based on the mothers' condition, concerns, self-perception of the nurse - patient interactions. In the process of agreement, there was agreement that the means to achieve goals should be through trust and establishment of active relationships with the nurse through identification of problems according to planned nursing goals and active interaction, such as explanations, teaching, changing of opinions, acceptance or rejection of explanations, and proposing of questions. Therefore agreement on the means to achieve nursing goals in the early postpartum period appears to be an effective nursing intervention for primiparous mothers. 3. The degree of self- confidence in maternal role performance of the exprimental group was higher than that of the control group(t=3.95, p<0.01). Out of 14 items, those with higher score in the experimental group were ‘I would like to be a better mother than I am’(t=1.93, p<0.05), ‘I know that my baby wants most of the times’(t=2.75, p<0.01), ‘When the baby cries, 1 can tell what she/he wants’(t=2.10, p<0.05), ‘I have confidence in my ability to care for the baby’(t=3.72, p<0.01), ‘I trust my own judement in deciding how to care for the baby’(t=1.96, p<0.05), ‘I feel that I know my baby and what to do for him /her’(t=2.44, p<0.01), ‘I am concerned about being able to meet the baby's needs’(t=2.87, p<0.01), ‘I know what my baby likes and dislikes’(t=3.26, p<0.01), ‘I don't know to care for the baby as well as I should’(t=2.07, p<0.05), and ‘I am unsure about whether I give enough attention to the baby’(t=3.04, p<0.01), That is, the degree of self-confidence in mothering, activities concerning infant care, and understanding of infant behavior of the experimental group was higher than that of the control group. Therefore, the first hypothesis, that the degree of self-confidence in maternal role performance of the experimental group would be higher than that of the control group, was supported(t=3.95, p<0.01). 4. The degree of satisfaction in the maternal role performance of the exprimental group was higer than that or the control group(t=2.31, p<0.05). Out of 13 items, those with higher score in the experimental group were ‘I am glad I had this baby now’(t=2.29, p<0.05), ‘I enjoy taking care of the baby’(t=2.4g, p<0.01), ‘It is boring for me to care for the baby and do the same thing over and over’(t=2.87, P<0.01), ‘I am unhappy with the amount of time I have for activities other than childcare’(t=2.51, p<0.01), and ‘When bathing and diapering the baby, I would like to be doing something else’(t=2.43, p<0.01). That is, the degree of satisfaction in mothering, infant care, and restraints in time of on the mother's self accomplishment and development in the experimental group was higher than that of the control group. Therefore, the second hypothesis, that the degree of satisfaction in maternal role performance of the experimental group would be higher than that of the control group, was supported(t=2.31, p<0.05). 5. The third hypothesis, that the higher the degree of satisfaction in materenal role performance, the higher the degree of self-confidence in materenal role performance in the experimental group, was supported (r=0.57, p<0.01)

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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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VVVF 직류전동차의 보조전원장치(SIV)180KVA용에 사용되는 필터콘덴서(FC) 유지보수 및 사용한도에 관한 연구 (Research about VVVF direct subways Secondary source unit(SIV)180KVA for using Filter Capacitor(FC) maintenance & limit of use)

  • 신혜진;우석태;신민호;손영진
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2010년도 춘계학술대회 논문집
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    • pp.1345-1351
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    • 2010
  • 본 논문에서는 현재 VVVF 직류전동차에 장착되어 있는 보조전원장치(SIV)180KVA용에 사용되는 필터콘덴서(FC) 유지보수 및 사용한도에 관한 연구를 수행하였다. 차량의 장기사용에 따른 내구연한과 혼잡도 부하에 따른 가선전압 변동 및 부하변동에 대해 출력 전압값의 변화와 SIV장치내 중요소자인 GTO Thyristor, Power Transistor Module 소자가 단락되는 현상이 자주 발생되는 등 고장원인을 분석해 본 결과 보조전원 장치내 필터 FC1~4 캐패시터의 입력측 고조파 성분의 필터링이 제대로 되지 못하는 것을 알게 되었으며, 캐패시터의 장기 사용에 따른 성분변화와 외부조건에 의해 천천히 특성변화를 일으킴으로써 사전 점검방법 및 불량 시 측정하기 어렵다는 점을 착안하여 본 연구를 검토하였다. 이를 위하여 본 연구에서는 캐패시터의 유지보수를 통한 관리와 측정방법의 개선점, 캐패시터의 수명 사용한도에 대해 검토하였다.

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