• 제목/요약/키워드: CPM

검색결과 427건 처리시간 0.022초

CPM/MRP 계획기법(計劃技法)에 관한 연구(硏究) (The Study on CPM/MRP Algorithm)

  • 원진희
    • 대한토목학회논문집
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    • 제5권1호
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    • pp.113-122
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    • 1985
  • PERT/CPM 공정계획(工程計劃) 기법(技法)이 수많은 사업계획기법(事業計劃技法)으로 이용(利用)된지 20년(年)이 경과하였고 자원제약문제(資源制約問題)를 개선(改善)하는 방법(方法)으로도 연장(延長)되었으나 이런 방법(方法)들이 자원(資源)확보소요시간(recource acquistion lead time)과 통합(統合)하는 공정계획기법(工程計劃技法)으로 정립(定立)하지는 못하고 있다. 이 논문(論文)은 이제까지의 CPM기법(技法)이 지니지 못하고 있는 미비점(未備點)에 MRP(자재소요계획(資材所要計劃)-Material Requirements Planning)기법(技法)을 병합함으로서 계획(計劃)을 보완(補完)하고자 함에 기본목적을 둔다.

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A Weighted Block-by-Block Decoding Algorithm for CPM-QC-LDPC Code Using Neural Network

  • Xu, Zuohong;Zhu, Jiang;Zhang, Zixuan;Cheng, Qian
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • 제12권8호
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    • pp.3749-3768
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    • 2018
  • As one of the most potential types of low-density parity-check (LDPC) codes, CPM-QC-LDPC code has considerable advantages but there still exist some limitations in practical application, for example, the existing decoding algorithm has a low convergence rate and a high decoding complexity. According to the structural property of this code, we propose a new method based on a CPM-RID decoding algorithm that decodes block-by-block with weights, which are obtained by neural network training. From the simulation results, we can conclude that our proposed method not only improves the bit error rate and frame error rate performance but also increases the convergence rate, when compared with the original CPM-RID decoding algorithm and scaled MSA algorithm.

CPM을 이용한 평판위 천이경계층에서 벽 마찰응력의 계측 (Measurement of Wall Shear Stress in Transitional Boundary Layer on a Flat Plate Using Computational Preston Tube Method)

  • 전우평;강신형
    • 대한기계학회논문집
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    • 제19권1호
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    • pp.240-250
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    • 1995
  • A CPM (computational preston tube method) was developed to measure wall shear stress in a transitional boundary layer on a flat plate using Preston tubes. Correlation for the displacement factor of Preston tubes was improved for a CPM to be used in the transitional boundary layer. The distribution of skin-friction coefficient was reasonably predicted in the uniform free stream of 3.1% turbulence intensity. Reasonable and accurate estimation of displacement factor of Preston tubes was found to be of crucial importance for the CPM, especially in the laminar boundary layer. The mean velocity profiles of the boundary layer on the plate were also measured and presented.

DFB 레이저의 통합된 설계 변수로서으 광자 분포 중심 I : 저 반사면-고 반사면 구조 (Center of Photon Mass as a Unified Design Parameter I : DFB Lasers with Low-and High-reflection Faets)

  • 김성한;김상배
    • 전자공학회논문지D
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    • 제36D권12호
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    • pp.53-62
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    • 1999
  • 저 반사면-고 반사면 DFB 레이저에서 발전 모드의 문턱이득과 축 방향 광자 분포 균일성을 동시에 나타내는 통합된 설계 변수로서 광자 분포 중심(CPM, conter of photon mass)을 제안하였다. 이러한 통합된 설계 변수가 필요한 것은 발진 모드의 문턱이득과 광자 밀도의 최대값과 최소값의 비, 즉 광자 밀도 비가 서로 독립적이지 않고 깊이 연관되어 있기 때문이다. 제안된 CPM은 발진 모드의 문턱이득과 반비례 관계에 있으며, 그 값이 0.5일 때 축 방향 광자 분포가 가장 균일하다. 또 문턱이득 차이는 주 모드의 CPM과 곁 모드의 CPM은 0.5로 맞추어 광자 분포를 균일하게 하고 곁 모드의 CPM은 최소화하여 주 모드와의 문턱이득 차이를 크게 해야 한다. 이를 위하여는 조절 가능한 회절격자 구조 변수가 더 필요한데 sampled grating이 그 수단으로 제시되었으며, 문턱이득 차이를 증가시키는 데에 사용될 수 있음을 보였다.

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Applying CPM-GOMS to Two-handed Korean Text Entry Task on Mobile Phone

  • Back, Ji-Seung;Myung, Ro-Hae
    • 대한인간공학회지
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    • 제30권2호
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    • pp.303-310
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    • 2011
  • In this study, we employ CPM-GOMS analysis for explaining physical and cognitive processes and for quantitatively predicting when users are typing Korean text messages on mobile phones using both hands. First, we observe the behaviors of 10 subjects, when the subjects enter keypads with both hands. Then, basing upon MHP, we categorize the behaviors into perceptual, cognitive, motor operators, and then we analyze those operators. After that, we use the critical paths to model two task sentences. Also, we used Fitts' law method which was applied many times to predict text entering time on mobile phone to compare with the results of our CPM-GOMS model. We followed Lee's (2008) method that is well suited for text entry task using both hands and calculate total task time for each task sentences. For the sake of comparison between the actual data and the results predicted from our CPM-GOMS model, we empirically tested 10 subjects and concluded that there were no significant differences between the predicted values and the actual data. With the CPM-GOMS model, we can observe the human information processes composed on the physical and cognitive processes. Also we verified that the CPM-GOMS model can be well applied to predict the users' performance when they input text messages on mobile phones using both hands by comparing the predicted total task time with the real execution time.

메칠오렌지에 의한 말레인산클로르페니라민의 분광광도 정량 (Spectrophotometric Determination of Chlorpheniramine Maleate with Methyl Orange)

  • 전인구
    • Journal of Pharmaceutical Investigation
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    • 제16권4호
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    • pp.139-147
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    • 1986
  • A singly charged methyl orange(MO) anion was found to be extracted with chlorpheniramine maleate(CPM) as a 1 : 1 complex in chloroform. Of various solvents, MO-chloroform system gave a yellow color for CPM, while in the absence of CPM, an organic phase showed almost no color. In this way, the spectrophotometric method was investigated for the determination of CPM by solvent extraction. The addition of alcoholic bolic acid solution to the solvent extract gave a higher color stability and transparency at least 5 days, but the extract alone lost its color intensity significantly. CPM is determined by measuring the absorbance of the extracts over a range of $1{\sim}7{\times}10^{-4}M\;(39{\sim}273\;{\mu}g/ml)$ in aqueous solution at 423 nm. The molar absorptivity was $2.26{\times}10^3\;l,\;mol^{-1},\;cm^{-1}$. The absorbance of the extract was constant in the range of pH $3.7{\sim}4.6$. This novel method was applied for the determination of CPM in artificial and commercial preparations in comparison with the analytical method of CPM tablets in K.P.IV. The results obtained showed that the former was better in accuracy and time consumption than the latter.

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Abstracted Meta-model for Effective Capabilities Portfolio Management (CPM)

  • Lee, Joongyoon;Yoon, Taehoon;Park, Youngwon
    • 시스템엔지니어링학술지
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    • 제7권1호
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    • pp.31-41
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    • 2011
  • The purpose of this paper is to provide an abstracted meta-model for executing Capabilities Portfolio Management (CPM) effectively based on DoDAF2.0. The purpose of developing an architecture is for beneficial use of it. A good set of architectural artifacts facilitates the manipulation and use of them in meeting its usage objectives well. Systems engineering methodologies evolve to accommodate or to deal with enterprise or SoS/FoS level problems. And DoD's Capabilities Portfolio Management (CPM) is a good example which demonstrates enterprise or SoS level problems. However, the complexity of the architecture framework makes it difficult to develop and use the architecture models and their associated artifacts. DoDAF states that it was established to guide the development of architectures and to satisfy the demands of a structured, repeatable method for evaluating alternatives which add value to decisions and management practices. One of the objectives of DoDAF2.0 is to define concepts and models usable in CPM which is one of DoD's six core processes. However, DoDAF and various guidelines state requirements for CPM rather than how to. This paper provides methodology for CPM which includes process and tailored meta-models based on DoDAF Meta Model (DM2).

슬관절 수술 후 재활에 대한 Continuous Passive Motion 치료와 한의 병행치료의 체계적 문헌 고찰 (A Systemic Review of Korean Medical Treatment Combined with Continuous Passive Motion Therapy on the Knee Joint Postoperative Rehabilitation)

  • 하현주;오민석
    • 한방재활의학과학회지
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    • 제27권3호
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    • pp.33-45
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    • 2017
  • Objectives The objective of this study is to report the evidence that continuous passive motion (CPM) therapy combined with Korean Medicine is effective for knee injuries. Methods We searched 2 Korean medical electronic databases, and 2 Chinese electronic databases to find randomized controlled clinical trials (RCTs) that treat knee injuries with Korean Medicine combined with CPM therapy. We selected studies by screening. We extracted data from selected RCTs, and analyzed RCTs by using Cochrane's Risk of bias criteria. Results 386 studies are searched, and 7 RCTs are selected. According to the study, several kinds of Korean Medicine such as hydrotherapy, decoction, acupuncture, moxibustion, and manual therapy are used with CPM therapy for the knee joint postoperative rehabilitation. We found the encouraging evidence that Korean Medicine and CPM combined therapy is more effective than single CPM therapy by alleviating pain, increasing range of motion, and improving knee function, etc. However, the risk of bias in most RCTs was judged to be uncertain. Conclusions Combination of Korean Medicine and CPM therapy can compensate the defect of single CPM therapy, and promotes the recovery of knee joint function.

한방 치료를 병행한 슬관절 재활 CPM 증례보고 3례 (Case Report : 3 Cases of CPM Combined with Korean Medical Treatment for Knee Joint Rehabilitation)

  • 하현주;김명규;이치호;오민석
    • 혜화의학회지
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    • 제25권1호
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    • pp.15-26
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    • 2016
  • Objectives : The aim of this study was to report the cases of knee injury that are treated with both CPM and Korean medicine. Methods : We treated 3 patients who had knee joint pain and gait disturbance by knee injuries with Korean medicine and CPM treatment. We evaluated the outcomes by checking NRS, ROM, Lysholm knee score, walking state and other symptoms. Results : The NRS, ROM, Lysholm knee score, and other symptoms of 3 patients were improved before they. These results show possibilities of simultaneous treatment of Korean medicine and CPM. But there is a limit that the number of cases is not sufficient, and there was no long-term follow-up after discharge. Conclusions : Simultaneous treatment of Korean medicine and CPM has an effect on knee joint rehabilitation. Further studies are needed to prove the effectiveness of Korean medicine combined with CPM.

협업프로세스 모델링 방법 개발 및 검증 (Development of a Modeling Methodology to Capture Collaborative Processes and Its Verification)

  • 이선화;류광열
    • 대한산업공학회지
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    • 제36권3호
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    • pp.176-185
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    • 2010
  • As long as the information systems are spread out, various efforts are being attempted to get the effective results by the system. As a result, a new management strategy has been appeared, referred to as "collaboration", and it is necessary to use a right methodology for modeling collaborative processes accordingly. Even though many modeling methodologies such as IDEF3, Petri-Nets, UML, and ARIS have been widely used for modeling processes, they are inadequate for clearly representing collaborative processes. Some researchers, therefore, have suggested new modeling methodologies for describing collaborative processes including CPM (collaborative process modeling). In this paper, we introduce an extended version of CPM method (i.e., exCPM) as a tool for modeling collaborative works after analyzing advantages and disadvantages of aforementioned methodologies. One of distinct characteristics of exCPM is that model verification is possible by transforming the exCPM models into Petri-Nets models. We also demonstrate transformation of an exCPM model in this paper with case studies for model verification.