• 제목/요약/키워드: statistical quality control

검색결과 636건 처리시간 0.026초

영유아 보육시설의 급식 운영 실태 조사 - 충남 아산 지역 중심으로 - (A Survey on the Foodservice Management System of the Child Care Centers in Chungnam Asan Area)

  • 송은승;김은경
    • 대한지역사회영양학회지
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    • 제14권6호
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    • pp.846-860
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    • 2009
  • We investigated the foodservice management practices in various operation types of childcare centers in Asan, Chungnam Province, with the intention of improving the quality of foodservice and providing the basic information for establishing more effective and efficient foodservice model system. Self-completed questionnaires were collected from the directors of 174 child care centers. The statistical analysis was completed using SPSS Ver. 12.0 program. The followings are about the results of this study. Approximately 94.8% of the directors were women with the average age of 40.3. All of the investigated facilities executed foodservice; the facilities of 96.2% had been self-operated, 1.9% was contract-managed and the remaining 1.9% served delivered meal from outside. Only 20.0% of the investigated centers employed a dietitian. In most of the centers, meals were prepared in a conventional manner and approximately 85.3% of the centers are serving only snacks twice a day as a supplementary due to financial difficulties. Menu planner of the facilities, which have no dietitian was the director (35.8%) or the cook (25.7%). In most centers, the directors purchased the food materials (67.5%). Material inspection was done by the director (54.9%) or the cook (40.5%). However, home care centers did not inspect the food material. These results indicate that food service management guidelines need to be established by the facility type with the government control and financial support. Especially, dietitian employment and the efficient foodservice model system establishment are questions that confront us.

채널추정기를 이용한 등화기 결정오류 정정 알고리즘에 관한 연구 (A Study on The Correction of The Channel Equalizer Decision Error Using Channel Estimator)

  • 김선웅
    • 한국산학기술학회논문지
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    • 제18권8호
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    • pp.18-24
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    • 2017
  • 대역이 제한되거나 채널분산이 존재하는 매체를 통해 메시지를 전송하는 과정은 불가피하게 신호왜곡과 잡음유입을 수반하며 결과적으로 심볼간 간섭과 부가잡음에 의해 전송품질이 열화 되어 수신심볼 오율을 증가시키게 된다. 적응 등화기의 역할은 전송 메시지를 복원하기 위해 등화기 수신단에 입력되는 수신신호로부터 채널왜곡 성분과 잡음을 제거하는 일이다. 이를 위해 일반적으로 선형필터부와 심볼 결정기의 조합으로 구성되는 등화기에 관한 연구가 많이 이루어져 왔고 전방향 오류정정부호화과 결합하여 디지털 정보통신 분야에 필수적인 전송효율 제고에 핵심적인 역할을 하고 있다. 본 논문에서는 등화기 출력인 메시지 심볼에 잔존하는 심볼오류를 추가적으로 정정할 새로운 알고리즘을 제안하였는데 일반적으로 등화기 성능개선 알고리즘들이 등화 초기 수렴속도나 정상상태오차를 개선하는 방향으로 진행되어 오고 있는 반면, 본 논문에서는 등화기 결정심볼과 전송채널 추정값을 이용하여 등화기 입력신호를 재구성하고 실제 입력신호와의 오차신호를 구한 후 이에 대한 통계적 특성을 분석해 직접적으로 오류정정을 수행하는 새로운 알고리즘을 제안하였다.

고유수용성촉진법을 이용한 수정된 강제유도 운동치료가 아급성 뇌졸중 환자의 상지 기능과 일상생활수행능력에 미치는 영향 (The Effects of mCIMT using PNF on the Upper Extremity Function and Activities of Daily Living in Patients with Subacute Stroke)

  • 방대혁;송명수;조혁신
    • PNF and Movement
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    • 제16권3호
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    • pp.451-460
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    • 2018
  • Purpose: The purpose of this study was to investigate the effects of a modified constraint induced movement therapy (mCIMT) using proprioceptive neuromuscular facilitation (PNF) on the upper extremity function and activities of daily living (ADLs) in patients with subacute stroke. Methods: Fourteen participants with subacute stroke were randomly assigned to a group using both mCIMT and PNF or a group using mCIMT alone. Each group underwent twenty sessions (1 h/d, 5 d/wk) for 4 weeks. Patients were assessed with the action research arm test (ARAT), the Fugl-Meyer assessment for the upper extremities (FMA-UE), the Modified Barthel Index (MBI), and motor activity logs (MALs; amount of use [AOU] and quality of movement [QOM]). Results: Both the experimental group and the control group showed significant intragroup improvement in the ARAT, FMA-UE, MBI, and MAL-AOU (p<0.05). The group using both mCIMT and PNF exhibited greater improvement in the ARAT, FMA-UE, MBI, and MAL-AOU than did the group using mCIMT alone. Statistical analyses showed significant differences in the ARAT (p=0.01), FMA-UE (p=0.01), MBI (p=0.00), and MAL-AOU (p=0.01) between the groups. Conclusion: This study applied mCIMT combined with PNF for subacute stroke patients, and the results showed significant improvements in the patients' upper extremity function and ADLs. Therefore, mCIMT using PNF may be more effective than mCIMT alone in improving upper limb function and ADLs in patients with subacute stroke.

소아·청소년 천식에 대한 수기요법의 효과: 체계적 문헌 고찰 (Effectiveness of Manual Therapy for Asthma in Children and Adolescents: A Systematic Review)

  • 박선영;허인;신병철
    • 척추신경추나의학회지
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    • 제17권1호
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    • pp.11-19
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    • 2022
  • Objectives This systematic review aimed to provide evidence of the effectiveness and safety of manual therapy for asthma in children and adolescents. Methods We queried eight electronic databases (PubMed, Ovid-MEDLINE, EMBASE, The Cochrane Library, CNKI, ScienceON, KISS, and RISS) up to the end of April 2022. We included only randomized controlled trials (RCTs) investigating manual therapy for the treatment of asthma in children and adolescents. The methodological quality of the included RCTs was evaluated using the Cochrane risk-of-bias tool 1.0. Results Four RCTs were eligible for inclusion. Meta-analysis could not be performed due to the heterogeneity of the studies. One study showed the statistical significance of SMD 0.41 (95% CI: 0.06, 0.76, p<0.05) in the comparison with the osteopathic therapy group and the sham control group before and after treatment on the same day of peak expiratory flow. Conclusions This possibility was observed in a non-pharmacological approach to manual therapy. Manual therapy can be considered as an adjunct therapy for asthma treatment in children and adolescents who have difficulty with drug therapy.

SWOT Analysis and Expert Assessment of the Effectiveness of the Introduction of Healthcare Information Systems in Polyclinics in Aktobe, Kazakhstan

  • Lyudmila, Yermukhanova;Zhanar, Buribayeva;Indira, Abdikadirova;Anar, Tursynbekova;Meruyert, Kurganbekova
    • Journal of Preventive Medicine and Public Health
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    • 제55권6호
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    • pp.539-548
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    • 2022
  • Objectives: The purpose of this study was to assess the organizational effectiveness of the introduction of a healthcare information system (electronic medical records and databases) in healthcare in Kazakhstan. Methods: The authors used a combination of 2 methods: expert assessment and strengths, weaknesses, opportunities, and threats (SWOT) analysis. SWOT analysis is a necessary element of research, constituting a mandatory preliminary stage both when drawing up strategic plans and for taking corrective measures in the future. The expert survey was conducted using 2 questionnaires. Results: The study involved 40 experts drawn from specialists in primary healthcare in Aktobe: 15 representatives of administrative and managerial personnel (chief doctors and their deputies, heads of medical statistics offices, organizational and methodological offices, and internal audit services) and 25 general practitioners. Conclusions: The following functional indicators of the medical and organizational effectiveness of the introduction of information systems in polyclinics were highlighted: first, improvement of administrative control, followed in descending order by registration and movement of medical documentation, statistical reporting and process results, and the cost of employees' working time. There has been no reduction in financial costs, namely in terms of the costs of copying, delivery of information in paper form, technical equipment, and paper.

배합 비율에 따른 황련과 황금의 혼합 전탕액 및 개별 전탕 혼합액 내 성분 함량 분석 (Quantitative analysis of the marker compounds in the decoctions of Coptis chinensis-Scutellaria baicalensis at different proportion produced by 'Mixed decoction' and 'Single decoction mixture')

  • 김한영;김정훈
    • 대한본초학회지
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    • 제35권3호
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    • pp.33-45
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    • 2020
  • Objective : The present study aimed to evaluate the change of the content of 7 active components in decoctions produced by various proportional pairs of Coptis chinensis Franch and Scutellaria baicalensis Georgi in 'Mixed decoction (MD)' and 'Single decoction mixture (SDM)'. Methods : The samples of MDs were prepared by decocting C. chinensis : S. baicalensis with the ratios of 10 g:10 g, 10 g:20 g, and 20 g:10 g. Those of SDMs were prepared by blending each single decoction from C. chinensis and S. Baicalensis with the ratios of 1:1, 1:2, and 2:1. The samples were evaluated by high-performance liquid chromatography with statistical analyses. Results : The analytical methods, which were optimized and validated, were reliably applied to present research. The content of all components in both MDs and SDMs at C. chinensis : S. baicalensis = 1:1 ratio were reduced compared with single herb decoction. The components from each compositional herb in MDs were proportionally increased with the ratio of original herb increased, but inversely proportional to paired herb. The contents of components in MDs were significantly lower than those in SDMs at all ratios, except for high content of baicalin at C. chinensis : S. baicalensis = 2:1. Conclusion : It was concluded that MDs and SDMs as well as the proportions of herbs could affect the contents of the components from original herbal medicines. These results provide the information for the quality control of herbal medicine combined C. chinensis with S. baicalensis.

Effect of rubber fiber size fraction on static and impact behavior of self-compacting concrete

  • Thakare, Akshay A.;Siddique, Salman;Singh, Amardeep;Gupta, Trilok;Chaudhary, Sandeep
    • Advances in concrete construction
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    • 제13권6호
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    • pp.433-450
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    • 2022
  • The conventional disposal methods of waste tires are harmful to the environment. Moreover, the recycling/reuse of waste tires in domestic and industrial applications is limited due to parent product's quality control and environmental concerns. Additionally, the recycling industry often prefers powdered rubber particles (<0.60 mm). However, the processing of waste tires yields both powdered and coarser (>0.60 mm) size fractions. Reprocessing of coarser rubber requires higher energy increasing the product cost. Therefore, the waste tire rubber (WTR) less favored by the recycling industry is encouraged for use in construction products as one of the environment-friendly disposal methods. In this study, WTR fiber >0.60 mm size fraction is collected from the industry and sorted into 0.60-1.18, 1.18-2.36-, and 2.36-4.75-mm sizes. The effects of different fiber size fractions are studied by incorporating it as fine aggregates at 10%, 20%, and 30% in the self-compacting rubberized concrete (SCRC). The experimental investigations are carried out by performing fresh and hardened state tests. As the fresh state tests, the slump-flow, T500, V-funnel, and L-box are performed. As the hardened state tests, the scanning electron microscope, compressive strength, flexural strength and split tensile strength tests are conducted. Also, the water absorption, porosity, and ultrasonic pulse velocity tests are performed to measure durability. Furthermore, SCRC's energy absorption capacity is evaluated using the falling weight impact test. The statistical significance of content and size fraction of WTR fiber on SCRC is evaluated using the analysis of variance (ANOVA). As the general conclusion, implementation of various size fraction WTR fiber as fine aggregate showed potential for producing concrete for construction applications. Thus, use of WTR fiber in concrete is suggested for safe, and feasible waste tire disposal.

외상 후 스트레스 장애에 대한 옥시토신의 역할: 체계적 문헌 고찰 (Role of Oxytocin in Post-traumatic Stress Disorder: A Systematic Review)

  • 오재욱;김민수;추상희
    • Journal of Korean Biological Nursing Science
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    • 제24권1호
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    • pp.1-16
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    • 2022
  • Purpose: Recently, oxytocin has been introduced experimentally as a pharmacological treatment for post-traumatic stress disorder (PTSD). This study attempted to investigate the possibility of oxytocin as a treatment option for patients with PTSD by examining its dose, interval, and effectiveness in patients with PTSD. Methods: A systematic review was done on articles published from 1967 to 2020 using the PubMed, PsycINFO, and Cochrane databases. Our inclusion criteria were 1) subjects 18 years of age or older diagnosed with PTSD or exposed to a traumatic event that met criterion A of the Diagnostic and Statistical Manual of Mental Disorders (DSM) for PTSD, 2) oxytocin was administered at least once, 3) clinical trials, and 4) studies published in Korean or English. Two independent researchers reviewed 22 articles and recorded the contents. The risk of bias was evaluated to determine the quality of the reviewed article. Results: The parameters for evaluating the effectiveness of oxytocin were identified as socio-behavioral measures in 11 articles, neuronal imaging in 9, and biomarkers in 4. In 5 papers, oxytocin was administered multiple times. Socio-behavioral measures were improved in 3 out of 5 studies in which oxytocin was administered multiple times. In 2 studies in which prolonged exposure treatment and nasal oxytocin administration were combined for 10 weeks, patient symptoms were decreased compared to the control group. Conclusion: The possibility of oxytocin as an adjuvant treatment for PTSD psychotherapy was confirmed. Further studies are necessary to evaluate the long term effectiveness of administering oxytocin multiple times combined with psychotherapy.

개선된 Deep Feature Reconstruction : 다중 스케일 특징의 보존을 통한 텍스쳐 결함 감지 및 분할 (Enhanced Deep Feature Reconstruction : Texture Defect Detection and Segmentation through Preservation of Multi-scale Features)

  • 시종욱;김성영
    • 한국정보전자통신기술학회논문지
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    • 제16권6호
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    • pp.369-377
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    • 2023
  • 산업 제조 분야에서 품질 관리는 불량률을 최소화하는 핵심 요소로, 미흡한 관리는 추가적인 비용 발생과 생산 지연을 야기할 수 있다. 본 연구는 제조품의 텍스쳐 결함 감지의 중요성을 중심으로, 보다 정밀한 결함 감지 방법을 제시한다. DFR(Deep Feature Reconstruction) 모델은 특징맵의 조합 및 재구성을 통한 접근법을 채택하였지만, 그 방식에는 한계가 있었다. 이에 따라, 우리는 제한점을 극복하기 위해 통계적 방법론을 활용한 새로운 손실 함수와 스킵 연결구조를 통합하고 파라미터 튜닝을 진행하였다. 이 개선된 모델을 MVTec-AD 데이터세트의 텍스쳐 카테고리에 적용한 결과, 기존 방식보다 2.3% 높은 결함 분할 AUC를 기록하였고, 전체적인 결함 감지 성능도 향상되었다. 이 결과는 제안하는 방법이 특징맵 조합의 재건축을 통한 결함 탐지에 있어서 중요한 기여함을 입증한다.

임상간호사를 위한 공감증진 프로그램이 공감역량과 공감화법에 미치는 효과 (Effects of a Compassion Improvement Program for Clinical Nurses on Compassion Competence and Empathic Communication)

  • 정인자;박미경
    • 한국직업건강간호학회지
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    • 제33권1호
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    • pp.12-25
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    • 2024
  • Purpose: This quasi-experimental study used a non-equivalent control group pretest-posttest design with clinical nurses to develop a compassion improvement program and verify its effects on compassion competence and empathic communication. Methods: The Triandis Interpersonal Behavior model (Triandis, 1980) was used as a theoretical framework, and a compassion improvement program was developed based on the ADDIE model. The experimental treatment in the program was conducted for 120 minutes per session, once a week, for a total of six sessions. The data collection and research period ranged from September 7 to November 16. It involved a pre-survey of measured variables, six sessions of experimental treatment, a post-survey, and a follow-up survey in sequence. The collected data were analyzed using the statistical program SPSS/WIN 25.0 and then based on a t-test and repeated measures ANOVA to verify the effectiveness of the program. Results: Clinical nurses participating in the compassion improvement program showed improved compassion competence (F=8.00, p=.001) due to the cultivation of insight, sensitivity, and communication skills. In addition, the improvement in attentive listening (F=3.32, p=.024) indicated that the program was partially effective in empathic communication. Conclusion: The compassion improvement program for clinical nurses, which was developed in this study, is expected to be useful in nursing practice. In other words, the compassion improvement program may contribute to creating a positive atmosphere in the workplace for nurses and an empathic relationship between nurses and healthcare recipients through improvement in the compassion competence of nurses. If the compassion improvement program is continuously implemented as a facilitating condition, it will greatly help prevent the turnover of clinical nurses, assist them in adapting to hospital life, and enhance the quality of nursing care.