• Title/Summary/Keyword: Decision Sciences

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Management of Precancerous Cervical Lesions in Iran: A Cost Minimizing Study

  • Nahvijou, Azin;Sari, Ali Akbari;Zendehdel, Kazem;Marnani, Ahmad Barati
    • Asian Pacific Journal of Cancer Prevention
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    • v.15 no.19
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    • pp.8209-8213
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    • 2014
  • Background: Cervical cancer is a common, preventable and manageable disease in women worldwide. Objectives: This study was conducted to determine the cost of follow-up for suspicious precancerous cervical lesions within a screening program using Pap smear or HPV DNA test through the decision tree. Materials and Methods: Patient follow-up processes were determined using standard guidelines and consultation with specialists to design a decision tree model. Costs of treatment in both public and private sectors were identified according to the national tariffs in 2010 and determined based on decision tree and provided services (visits to specialists, colposcopy, and conization) with two modalities: Pap smear and HPV DNA test. The number of patients and the mean cost of treatment in each sector were calculated. The prevalence of lesions and HPV were obtained from literature to estimate the cost of treatment for each woman in the population. Results: Follow-up costs were determined using seven processes for Pap smear and 11 processes for HPV DNA test. The total cost of using Pap smear and HPV DNA process for each woman in the population was 36.1$ and 174$ respectively. Conclusions: The follow-up process for patients with suspicious cervical lesions needs to be included in the existing screening program. HPV DNA test is currently more expensive than Pap smear, it is suggested that we manage precancerous cervical lesions with this latter test.

Prioritizing Service Supply-Chain Performance Measures Using Multi-Criteria Decision-Making Methodologies

  • ABBAS, Haidar;ALAWI, Alamir Al;MAKTOUMI, Khadija Al
    • The Journal of Asian Finance, Economics and Business
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    • v.7 no.11
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    • pp.843-851
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    • 2020
  • This study focuses on identifying and prioritizing the broader performance measures for the service supply chains by taking the case of Majan Electricity Company, Sohar, in the Sultanate of Oman. For an examination of the uniformity of ultimate objectives and the priorities therein, two strata of respondents with a total of fourteen respondents were approached for their valuable insights. Suitable structured instruments were personally administered to elicit the insightful and worthy responses. The two multi-criteria decision-making techniques, namely, the Fuzzy Analytical Hierarchy Process and the Best-Worst Method were used to reach a meaningful prioritization of the identified and refined broader performance measurement dimensions. The results show that there exists a minor gap between the two respondents' groups in terms of their prioritizations. The major finding points to the difference in terms of the topmost priorities as revealed by the two set of respondents. For one group of respondents, the customer satisfaction matters the most, whereas for the other group, it is the overall profitability that matters the most. This gap against the utopian state assists in concluding that there is a requirement to reorient the employees so as to have a shared and common understanding of the organizational priorities.

Information Technology Continuance Research: Current State and Future Directions

  • Bhattacherjee, Anol;Barfar, Arash
    • Asia pacific journal of information systems
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    • v.21 no.2
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    • pp.1-18
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    • 2011
  • Contemporary research on information technology (IT) continuance is plagued by inadequate understanding of the continuance concept and inappropriate use of theories for studying this phenomenon. Following a review of the IT continuance literature, this paper identifies some of the extant misconceptions about continuance research and suggests theoretical avenues for advancing this research in a meaningful manner. Based on these insights, an extended expectation-confirmation theoretic model of IT continuance is proposed.

MEC; A new decision tree generator based on multi-base entropy (다중 엔트로피를 기반으로 하는 새로운 결정 트리 생성기 MEC)

  • 전병환;김재희
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.22 no.3
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    • pp.423-431
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    • 1997
  • A new decision tree generator MEC is proposed in this paper, which uses the difference of multi-base entropy as a consistent criterion for discretization and selection of attributes. To evaluate the performance of the proposed generator, it is compared to other generators which use criteria based on entropy and adopt different discretization styles. As an experimental result, it is shown that the proposed generator produces the most efficient classifiers, which have the least number of leaves at the same error rate, regardless of whether attribute values constituting the training set are discrete or continuous.

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A Study on the Decision Making Procedure of Clean-up Endpoints for Oiled Shorelines in Korea (우리나라 해안오염 방제종료 의사결정절차의 고찰)

  • Kim, Dong-Geun;Jeon, Hae-Jong;Kim, Jae-Dong
    • Journal of Fisheries and Marine Sciences Education
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    • v.24 no.5
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    • pp.712-720
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    • 2012
  • Recently, many problems related on shoreline response to spill oil were exposed again on a occasion of M/T Hebei spirit accident even though the weakness on the shoreline response system has been brought up since M/T Sea Prince oil spill accident. Therefore the establishment of shoreline response system that best suits our country is needed through considering the response system of well-developed country. The socioeconomic conflict between the persons concerned on the clean-up endpoints can be sharpened in Korea because the frequency of coastal use of our country is too high compared to other countries. Thus procedural justification, that is, how the clean-up endpoints be established is more important than what type of clean-up endpoints be used. In the present paper, we attempted to suggest a new manner on the decision making system for clean-up endpoints that best suits our country. The decision making system for clean-up endpoints need to be divided into two steps, that is, set-up step of clean-up endpoints criteria and decision step of clean-up endpoints. The decision making organization of local governments play a key role in case of set-up step of clean-up endpoints criteria, while the response command headquarters under Korean coast guard and decision making organization of local governments codecide whether the clean-up endpoints criteria is fits or not.

Interference Minimization Using Cognitive Spectrum Decision for LED-ID Network

  • Saha, Nirzhar;Le, Nam Tuan;Jang, Yeong Min
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.38B no.2
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    • pp.115-121
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    • 2013
  • LED-ID (Light Emitting Diode-Identification) network is envisioned to be the next generation indoor wireless communication medium by which simultaneously high speed data transmission, identification, and illumination are possible. In spite of being extremely promising, it suffers from much impairment. Signals having different propagation paths can suffer from delays, and phase shifts which will eventually result interference. The probability of interference is also increased when communication links are established between a tag and several readers. Therefore it is necessary to reduce the interference in LED-ID network to ensure quality of service. It is possible to avoid interference by knowing the information about readers prior to assign the available spectrum. In this paper, we have proposed dynamic spectrum decision using cognitive radio concept. The simulation results justify that the proposed scheme is better than the conventional scheme.

The Role of Pitch and Length in Spoken Word Recognition: Differences between Seoul and Daegu Dialects (말소리 단어 재인 시 높낮이와 장단의 역할: 서울 방언과 대구 방언의 비교)

  • Lee, Yoon-Hyoung;Pak, Hyen-Sou
    • Phonetics and Speech Sciences
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    • v.1 no.2
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    • pp.85-94
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    • 2009
  • The purpose of this study was to see the effects of pitch and length patterns on spoken word recognition. In Experiment 1, a syllable monitoring task was used to see the effects of pitch and length on the pre-lexical level of spoken word recognition. For both Seoul dialect speakers and Daegu dialect speakers, pitch and length did not affect the syllable detection processes. This result implies that there is little effect of pitch and length in pre-lexical processing. In Experiment 2, a lexical decision task was used to see the effect of pitch and length on the lexical access level of spoken word recognition. In this experiment, word frequency (low and high) as well as pitch and length was manipulated. The results showed that pitch and length information did not play an important role for Seoul dialect speakers, but that it did affect lexical decision processing for Daegu dialect speakers. Pitch and length seem to affect lexical access during the word recognition process of Daegu dialect speakers.

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An MMSE Based Iterative Soft Decision Interference Cancellation Scheme for Massive MIMO Systems (대규모 다중 입출력 시스템을 위한 MMSE 기반 반복 연판정 간섭 제거 기법)

  • Park, Sangjoon;Choi, Sooyong
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.39A no.9
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    • pp.566-568
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    • 2014
  • In this letter, an MMSE based iterative soft decision interference cancellation scheme for massive MIMO systems is proposed. To reduce the complexity, the proposed scheme uses the Sherman-Morrison-Woodbury formula to compute the entire MMSE filtering vectors in one iteration by one matrix inverse operation. Simulation results show that the proposed scheme also has a comparable BER to the conventional scheme for massive MIMO systems.

A Study on the Echo Cancellation using the Decision Feedback (결정궤환방식을 이용한 반향제거에 관한 연구)

  • 강석흠;이명수;강창언
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.13 no.3
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    • pp.193-203
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    • 1988
  • In this paper, an echo canceller(EC) using decision feedback at the ISDN U-interface is presented and its performance based on the stochastic iteration algorithm is analyzed, and compared with the other conventional EC. The steady state mean-squared error(MSE) by the analytical resutls on the decision feedback-EC turns out to be smaller than that of the other linear EC. The performance of the ECs with the same convergence factor are almost the same regardless of different channel characteristics.

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