• 한국의료질향상학회지
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• 제19권2호
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• pp.68-80
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• 2013

Background: This study investigates improvements in non-value-added nursing activities in clinical work, in order to improve the efficiency and quality of nursing activities. Methods: The study was performed as a quality improvement project at a tertiary general hospital. The nursing activities that needed improvements were categories into admission care, discharge care, supply management, diagnostic work-up related activities, and others. The nursing time and frequency of non-value-added activities were compared across nine nursing units before and after implementation of the quality improvement program. Post-implementation patient and nurse satisfaction were subsequently analyzed. Result: Post-implementation, the time spent on non-value-added nursing activities was reduced and patients and nurses were satisfied with the improvements. Discussion: Reducing non-value-added activities in nursing can increase the work efficiency and ensure time for patient care, thus improving the quality of nursing care. For further study, accurate surveys on nursing activities based on nursing time are required.

• 간호행정학회지
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• 제17권3호
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• pp.315-326
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• 2011

Purpose: Purposes of this study were to identify non-value-added nursing activities (NVANAs) and to estimate the amount of time spent on NVANAs among total nursing activities. Methods: Non-value-added nursing activities were identified though the use of a focus group. The nurses in the focus group were nurses working in a tertiary hospital. They discussed possible activities that could be NVANAs. Based on the focus group discussion, a pilot study was done to examine the actual occurrence of NVANAs in clinical settings. Results: The focus group discussion showed that NVANAs occurred in ten categories of nursing performances including communication with physicians, communication with other departments, medications, equipment/supplies, nursing records, tests, admission, discharge, and transfer. Direct nursing activities accounted for 35.5% of total nursing activities while indirect nursing activities accounted for 64.5%. Of indirect nursing activities, 16% were NVANAs. Most NVANAs were related to communication and equipment/supplies. Conclusions: To improve the quality and efficiency of nursing activities, it is necessary to identify NVANAs and their causes. Results of this study suggest that improvement in the work process and nursing unit structure, support for equipment/supplies, and effective communication are needed to reduce NVANAs in tertiary hospitals in Korea.

• 임상간호연구
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• 제17권3호
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• pp.363-374
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• 2011

Purpose: The purpose of this study was to identify the types and causes of non-value-added (NVA) activities in nursing practice, and to determine the frequency of each NVA type and causes of NVA in clinical area. Methods: This study was conducted using Delphi technique. First, in order to identify NVA and their causes, 24 nurses with 7 years or more of clinical experience were recruited from medical/surgical units in six general hospitals in Korea. Then the NVA types and causes were tested using a larger sample of 130 nurses with more than 3 years of clinical experience at two general hospitals in Korea. Results: NVA was categorized into 6 different types, which are repeating, duplicating, waiting, reverse-proxy working, reworking, and searching. The most prevalent NVAs were repeating and duplicating works. Reworking and searching were less frequent types than others. The causes of NVA were classified into personnel-related, supporting departments, records, regulations, information, materials or instruments, and others. Among them, personnel-related and supporting departments were reported with the highest scores. Conclusion: NVA leads to waste cost and time. These results demonstrated the situations and causes of NVA occurred in nursing practice. Further studies on the typology and moderation of NVA activities are warranted to improve the efficiency and quality of nursing care in day-to-day practice.

• 한국건설관리학회논문집
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• 제3권4호
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• pp.93-103
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• 2002

철근공사는 거푸집공사와 더불어 건축물의 구조적 안정성과 내구성 및 공기에 가장 큰 영향을 미치고 있는 공사이다. 그러나 국내 철근 콘크리트 공사는 철근현장가공조립을 주로 하고있어 낮은 생산성을 갖고 있는 실정이다. 따라서 본 논문은 생산성 향상을 위해 철근현장가공조립 프로세스를 부가가치 생산성향상을 위한 낭비요소를 분석하였다. 낭비요소 분석은 비가치창출 작업으로 인해 발생하는 요소로 철근현장가공조립의 가치분석을 통해 부가가치를 극대화 하고자 하였다. 그 결과 가치창출작업들이 비가치창출 작업보다 월등히 적다는 것으로 분석되었다. 특히, 본 논문에서 낭비는 불필요한 작업 단계와 인력, 장비, 자재, 시간 등에서 낭비되고 있었다. 또한 흐름생산이 되지 않고, 과잉생산을 하고 있는 것으로 조사되었으며, 가치의 변화가 필요한 것으로 분석되었다. 본 논문에서는 부가가치 생산성 향상을 위해 프로세스 상에 내재되어 있는 낭비요소를 분석하여 부가가치를 창출하는 가치창출 작업을 최대화하고, 비 가치창출작업을 최소화하는데 목적이 있다.

• 융합보안논문지
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• 제8권1호
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• pp.101-108
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• 2008

본 연구에서는 항만 물류 프로세스의 현황과 장애요인을 분석하고, Lean이론을 적용한 프로세스의 재설계를 통해 이를 개선하기 위한 방안을 도출하는 한편, 개선된 프로세스를 통한 항만물류시스템을 구축하기 이전 과정을 철강기업 내에 특화된 부두 운영 업무 중 슬라브 관리업무에서 항만물류프로세스의 관련 주체를 선별하고 각 주체간의 관계를 파악하여 부두, 조업, 출하, 공정, 품질, 구매에 이르는 관리업무를 정의하고 각각 개체사이의 정보와 슬라브의 흐름에서 Lean 도구를 사용하여 기존 프로세스 상에 Value added와 Non-Value added를 분석하여 Cycle Time의 감소, 재고감소, 업무전환시간의 감소, 재작업감소, 서비스개선, 낭비 감소 등을 목표로 업무프로세스를 정형화시키고, 항만현장이 항만물류프로세스를 최적의 상황으로 실행 할 수 있도록 환경의 재설계를 통한 항만물류프로세스의 개선된 모델을 제시한다.

• 한국식품조리과학회지
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• 제28권5호
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• pp.589-598
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• 2012

This research was studied to find out the best ingredients for making demi-glace sauce, using the thickening agent with glutinous rice, non-glutinous rice, brown rice, and black rice, and to look into the quality characteristics. The moisture of demi-glace sauce depending on the thickening type was that the roux added cereals was higher than the control. In addition, it was increased depending on the extension of the storage time. The control was the highest on pH and acidity. On variation depending on the storage time, all of the experimental groups showed decrease on pH. Demi-glace sauce with brown rice and black rice roux showed increase of acidity. The DPPH radical was not tended to be decreased in the experimental group, but it was rapidly decreased in the control, depending on the extension of the storage time. Demi-glace sauce with non-glutinous rice was the highest on Hunter's color L value and generally increased according to the storage time. Also demi-glace sauce with glutinous rice was the highest on 'a' value and 'b' value but was decreased according to the storage time. The control was highest on viscosity, and demi-glace sauce with non-glutious and black rice roux were low on the variation of viscosity depending on the storage time. Increment of total bacteria in demi-glace sauce with black and brown rice roux was relatively lower than the control on storage stability test, and demi-glace sauce with brown rice roux got the highest point after swallow, taste and overall of sensory evaluation.

• 대한안전경영과학회지
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• 제8권6호
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• pp.149-157
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• 2006

This paper suggests the design and operation of value stream mapping(VSM) applied to project management, such as R&D, IT Investment. First this study represents design methodology of VSM process using SIPOC(Supplier, Input, Process, Output, Costumer). Second, this paper considers the identification and improvement plan about non-added value time for VSM using FPC(Flow Process Chart) and PERT/CPM. Last, this paper proposes VSM scheduling method using PERT/CPM and CCPM(Critical Chain Project Management)

• Elastomers and Composites
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• 제57권4호
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• pp.215-221
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• 2022

In this study, high-penetration asphalt with low greenhouse gas emissions was used in the asphalt mixing process to reduce the carbon emissions during the reaction due to its capacity to be produced even at low temperatures. In effect, cationic, anionic, and non-ionic dispersants were added and mixed in different feeding ratios, seeking an effective dispersion of the modifiers (SIS, PS, TPEE, and SEBS) into the high-penetration asphalt matrix and forming an asphalt binder with a melting point of 120 ℃. The compatibility of the modifiers and the high-penetration asphalt was examined using SEM and DSC techniques, and the role of NDP-1 as a dispersant was carefully investigated with respect to dissolution time. The analyses showed that: (1) the dispersibility of the asphalt binder is good when the non-ionic dispersant is used; (2) as the concentration of the non-ionic dispersant increases, the dissolution time decreases and the domain size contracts; (3) the ND70-PS has the shortest dissolution time, the lowest agglomeration rate, and a single Tg value.

• 대한산업공학회지
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• 제32권4호
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• pp.298-313
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• 2006

Six sigma is focused on quality improvement through variation reduction, while lean is on process flow improvement and lead time reduction by waste elimination. However, lean cannot bring a process under statistical control and six sigma alone cannot dramatically improve process speed. Lean six sigma was developed to achieve faster rate of improvement in customer satisfaction, cost, quality, process speed, and invested capital. In this paper we present the importance of using value stream mapping and suggest a guideline on how to integrate lean and six sigma by is proposed.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2001년도 학술대회지
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• pp.416-421
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• 2001

국내 철근 콘크리트 공사는 철근현장가공조립을 주로 하고있는데 철근공사는 거푸집공사와 더불어 건축물의 구조적 안정성과 내구성 및 공기에 가장 큰 영향을 미치고 있는 공사이다. 이와 같은 철근현장가공조립의 프로세스를 린 생산원리를 적용하여 가치흐름분석을 하였다. 가치흐름분석은 가치분석과 가치흐름맵핑을 통해서 건설프로세스 상의 가치창출작업과 비 가치창출작업을 분석하였다 그 결과 비 가치창출 작업으로 인한 낭비로 많은 작업 단계와 인력, 장비, 자재, 시간 등이 낭비되고 있었다. 또한 밀어내기 생산(Push-driven Production)으로 과잉생산을 하는 등 생산의 낙후성이 조사되었다. 이러한 프로세스상의 문제점을 개선하기 위해 이 연구에서는 부가가치를 창출하는 가치창출 작업을 최대화하고, 비 가치창출작업을 최소화하여 낭비요소를 제거하는데 목적이 있다. 특히 진행간 재고를 최소화하여 흐름생산(Flow Production)과 당김생산(Pull-driven Production)이 될 수 있도록 하였다.