• Title/Summary/Keyword: CPM

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

  • Won, Chin Hee
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.5 no.1
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    • pp.113-122
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    • 1985
  • Although PERT/CPM has been used for over twenty years as a technique for scheduling in a variety of industries and various extention to the basic model have been improved the realism of considering resource constraints, none of these techniqueis have integrated resource acquistion load times and inventory records into scheduling technique. This paper is to designed to over-come basic shortcoming of previous CPM into incorperate with MRP technique.

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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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    • v.12 no.8
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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.

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

  • 전우평;강신형
    • Transactions of the Korean Society of Mechanical Engineers
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    • v.19 no.1
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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.

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

  • Kim, Sung-Han;Kim, Sang-Bae
    • Journal of the Korean Institute of Telematics and Electronics D
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    • v.36D no.12
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    • pp.53-62
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    • 1999
  • Center of photon mass(CPM), defined as the center of axial photon distribution, is proposed as a unified design parameter, which contains information about both threshold gain and nonuniformity of axial photon distribution in DFB lasers with low and high-reflection facets. The CPM is inversely proportional to threshold gain and is 0.5 when axial photon distribution is the most uniform. Therefore, a general rule of single-frequency leser design is that main mode CPM should be around 0.5 for-uniform axial photon distribution and side mode CPM should be minimized to maximize the threshold gain difference.

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

  • Back, Ji-Seung;Myung, Ro-Hae
    • Journal of the Ergonomics Society of Korea
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    • v.30 no.2
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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.

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

  • Chun, In-Koo
    • Journal of Pharmaceutical Investigation
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    • v.16 no.4
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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
    • Journal of the Korean Society of Systems Engineering
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    • v.7 no.1
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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).

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

  • Ha, Hyun Ju;Oh, Min-Seok
    • Journal of Korean Medicine Rehabilitation
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    • v.27 no.3
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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.

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

  • Ha, Hyunju;Kim, Myeongkyu;Lee, Chiho;Oh, Minseok
    • Journal of Haehwa Medicine
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    • v.25 no.1
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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.

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

  • Lee, Sun-Hwa;Ryu, Kwang-Yeol
    • Journal of Korean Institute of Industrial Engineers
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    • v.36 no.3
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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.