• 제목/요약/키워드: Multiple Case Studies

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Association Between the Risk of Multiple Sclerosis and Dietary Proinflammatory/Anti-Inflammatory Food Intake and Dietary Diversity: A Case-Control Study

  • Alireza Hatami;Maryam Ahmadi-khorram;Fatemeh Keykhaei;Ali Jafarzadeh Esfehani;Mohsen Nematy
    • Clinical Nutrition Research
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    • 제13권1호
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    • pp.61-73
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    • 2024
  • A diet rich in proinflammatory components and inflammation are suggested to be significant risk factors for multiple sclerosis (MS). This study aimed to investigate the association between the risk of MS and the inflammatory potential of an individual's diet and dietary diversity through pro-inflammatory/anti-inflammatory food intake score (PAIFIS) and dietary diversity score (DDS). In a hospital-based case-control study, 397 participants, including 197 patients with MS and 200 healthy participants aged over 18 years, were evaluated. The history of smoking, dietary intake, and anthropometric characteristics, including body mass index, waist circumference, total body fat, and fat-free mass were assessed. A validated 160-item semiquantitative food frequency questionnaire was used to calculate the PAIFIS and DDS scores. The mean age of the participants was 32.45 ± 8.66 years, and most were females (274, 79.4%). The PAIFIS score was significantly higher among MS patients than healthy participants (p = 0.001). Between PAIFIS and DDS, only PAFIS was significantly related to MS risk (odds ratio, 1.002; 95% confidence interval, 1.001-1.004; p = 0.001). PAIFIS, as an index of dietary inflammation, can predict MS. Further studies are needed to document these findings.

전술 애드혹 네트워크에서 다속성 의사결정 방법 기반 공중 경로 생성 방안 (Air Path Establishment Based on Multi-Criteria Decision Making Method in Tactical Ad Hoc Networks)

  • 김범수;노봉수;김기일
    • 대한임베디드공학회논문지
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    • 제15권1호
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    • pp.25-33
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    • 2020
  • Multipath routing protocols with unmanned aerial vehicles have been proposed to improve reliability in tactical ad hoc networks. Most of existing studies tend to establish the paths with multiple metrics. However, these approaches suffer from link loss and congestion problems according to the network condition because they apply same metric for both ground and air path or employ the simple weight value to combine multiple metrics. To overcome this limitation, in this study, we propose new routing metrics for path over unmanned aerial vehicles and use the multi-criteria decision making (MCDM) method to determine the weight factors between multiple metrics. For the case studies, we extend the ad-hoc on-demand distance vector protocol and propose a strategy for modifying the route discovery and route recovery procedure. The simulation results show that the proposed mechanism is able to achieve high end-to-end reliability and low end-to-end delay in tactical ad hoc networks.

Jurisdiction of the Arbitral Tribunal in the Case of Multiple Contracts

  • Rodner, James Otis;Marcano, Angelica
    • 한국중재학회지:중재연구
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    • 제24권3호
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    • pp.1-31
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    • 2014
  • The foundation of the arbitration jurisdiction is the arbitration agreement entered into by the parties to a contract. Usually, only the signatory parties to a contract and the disputes arising from a contract that includes an arbitration clause or to which the arbitration clause relates are the ones that can be submitted to arbitration. This article discusses some of the arguments for extending the arbitration clause in complex arbitrations, that is, in those cases where there are more than two parties, more than two contracts or more than two parties and contracts. Particularly, this paper addresses multiple contract arbitration when the contracts are related. One of the arguments used by the arbitral tribunal for the extension of jurisdiction is the existence of a link between the contracts. Additional arguments include implied consent, participation in the negotiation and performance of a contract and good faith. The article also discusses some of the typical cases of linked contracts in many civil law countries, such as subcontracts, third party beneficiaries and standard terms of contracts, from which arbitral jurisdictions problems may arise. Finally, special attention is given to Article 14 of the 2008 Peruvian Arbitration Law as the first provision in an arbitration law in Latin America that extends the arbitration agreement to non-signatory parties using for this a mixed approach.

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Endoscopic diagnosis of gastric metastases from malignant melanoma: systematic review

  • Helena Campoli Reggiani;Ana Clara Aguiar Pongeluppi;Vitoria Froes Miraglia Martins Ferreira;Isadora Pinheiro Felix;Paulo Moacir de Oliveira Campoli
    • Clinical Endoscopy
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    • 제55권4호
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    • pp.507-515
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    • 2022
  • Background/Aims: Metastases of malignant melanoma (MM) are rare and associated with poor prognosis. The objective of this study was to analyze the clinical and endoscopic characteristics of gastric metastases of MM by systematically reviewing cases and case series involving patients diagnosed using upper gastrointestinal endoscopy. Methods: The PubMed and LILACS databases were searched. Reports containing individual patient data were included. Outcomes such as clinical data, endoscopic findings, treatments, and survival were analyzed. Results: A total of 88 studies with individual data from 113 patients with gastric metastases of MM were included. The primary sites of MM were the skin (62%), eyes (10%), and mucous membranes (6%). Most patients (56%) had multiple metastases in the stomach, located predominantly in the gastric body (approximately 80%). The overall survival rate at 2 years was 4%. There was a significant reduction in the survival of patients with multiple gastric metastases compared to that of patients with single metastasis (hazard ratio, 0.459; 95% confidence interval, 0.235-0.895; p=0.022). Conclusions: Gastric metastases of MM have a poor prognosis, especially in patients with multiple implants in the stomach. Additional studies are needed to verify whether ocular and mucosal melanomas are associated with a higher risk of gastric metastases than that of cutaneous melanomas.

아밀로이드증을 동반한 다발골수종 환자의 자가말초혈액조혈모세포 이식 전 유도항암화학요법 후 발생한 말초신경병증에 대한 복합 한의 치험 1례 (A Case Report of Peripheral Neuropathy after Induction Chemotherapy before Autologous Peripheral Blood Stem Cell Transplantation in a Patient with Multiple Myeloma with Amyloidosis Treated with Complex Korean Medicine Treatment)

  • 김마리아;이세연;구기범;남이랑;김민화;김소연
    • 대한한방내과학회지
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    • 제44권5호
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    • pp.1092-1100
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    • 2023
  • Introduction: We present a case of multiple myeloma with amyloidosis, which has features of peripheral neuropathy after induction chemotherapy before autologous peripheral blood stem cell transplantation, in a 56-year-old woman with Korean medicine. Case Presentation: For 17 days of hospitalization, the patient with complaints of numbness and a tingling sensation in the hands and feet was treated with acupuncture, herbal medicine. To reduce the symptoms, we provided Korean medicine treatments, including herbal medicine, acupuncture, and moxibustion. The Visual Analog Scale (VAS) was used to evaluate the results of the treatment. Until discharge, the VAS scores decreased for both hands and the foot tingling sensation. Conclusion: According to these results, Korean medicine treatment may be considered an effective treatment for tingling sensations in a patient with multiple myeloma with amyloidosis. Prospective studies are needed in the future to confirm and expand these findings.

고속통신시스템의 신호충실성을 고려한 신호경로 설계 방법 (Design Methodologies of High-speed Communication System with Signal Integrity)

  • 박종대;박영호;남상식
    • 대한전자공학회:학술대회논문집
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    • 대한전자공학회 2000년도 추계종합학술대회 논문집(1)
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    • pp.279-282
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    • 2000
  • As digital systems continue to use components with faster edge rates and clock speeds, transmission of the digital information in these systems approaches the microwave realm. At these speeds digital signal fidelity becomes both a critical success factor and design challenge. The noise sources in digital systems include the noise in power supply, ground and packaging media due to simultaneous switching of drivers, signal reflections and distortions on single and multiple transmission lines. This paper presents theory, case studies and design considerations of gigabit interconnection for network and communication systems. The case studies show HSPICE and Ampredictor simulations of alternate approaches. Various subjects including skin effect and dielectric losses, interconnect simulations and crosstalks of connector, affected signal discontinuity, are addressed.

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Examining Context-specific Social Media Marketing Strategies

  • Park, Jin-Won;Cho, Eun-Young;Kim, Hee-Woong
    • Asia pacific journal of information systems
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    • 제26권1호
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    • pp.143-162
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    • 2016
  • Social media marketing has gained attention from marketers because of the growing number of social media users. Considering the unique context of each company or organization behind the marketing is necessary when choosing and applying various social media marketing strategies to ensure achievement of better business performance. However, previous studies have focused on context-specific marketing strategies. Accordingly, this study aims to develop context-specific social media marketing strategies. In this study, we first develop a conceptual framework with two items, namely, brand awareness and business orientation of an organization, as criteria, and classify the framework into four contexts. We then propose context-specific social media marketing strategies for each of the contexts. We examine the framework and proposed social media marketing strategies based on multiple case studies. The primary contribution of this study is our context-specific social media marketing strategies.

A Medium Access Control Protocol for Voice/Data Integrated Wireless CDMA Systems

  • Lim, In-Taek
    • ETRI Journal
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    • 제23권2호
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    • pp.52-60
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    • 2001
  • In this paper, a medium access control protocol is proposed for integrated voice and data services in wireless local networks. Uplink channels for the proposed protocol are composed of time slots with multiple spreading codes per slot based on slotted code division multiple access (CDMA) systems. The proposed protocol uses spreading code sensing and reservation schemes. This protocol gives higher access priority to delay-sensitive voice traffic than to data traffic. The voice terminal reserves an available spreading code to transmit multiple voice packets during a talkspurt. On the other hand, the data terminal transmits a packet without making a reservation over one of the available spreading codes that are not used by voice terminals. In this protocol, voice packets do not come into collision with data packets. The numerical results show that this protocol can increase the system capacity for voice service by applying the reservation scheme. The performance for data traffic will decrease in the case of high voice traffic load because of its low access priority. But it shows that the data traffic performance can be increased in proportion to the number of spreading codes.

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동일평면상에 존재하는 복수표면균열의 피로성장수명예측 (Fatigue Growth Life Prediction for Collinear Multiple Surface Cracks)

  • 이진호;최용식;김영진
    • 대한기계학회논문집
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    • 제17권7호
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    • pp.1668-1677
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    • 1993
  • The objective of this paper is to develop a computational model for predicting the fatigue propagation of collinear multiple surface cracks under constant amplitude and variable amplitude loadings. After examining fatigue crack growth behavior for CT specimens and single surface crack specimens, empirical equations of(11) and(12) are proposed for the prediction of fatigue life in a multiple surface crack geometry. The accuracy of the proposed model is verified using a life prediction computer program. Several case studies were performed to check the accuracy of the proposed model and to verify the usefulness of the developed program. Good agreement is observed between the numerical results based on the proposed model and the published experimental data.

전문가 의견을 고려한 다특성치 파라미터 설계에 관한 연구 (The Parameter Design of Multiple Characteristics with Engineer's Opinions)

  • 조용욱;박명규
    • 품질경영학회지
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    • 제27권2호
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    • pp.218-236
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    • 1999
  • The purpose of parameter design is to determine optimal settings of design parameters of a product or a process such that the performance characteristics of a product exhibit small variabilities around their target values. Taguchi made significant contributions in this area. However, his analysis of the problem focused on only one performance characteristic or response, although in product and process design, multiple characteristics are more common. The critical problem in dealing with multiple characteristics is how to compromise the conflict among the selected levels of the design parameters for each individual characteristic. In this paper, Methodology using SN ratio optimized by univariate technique is proposed and a parameter design procedure to achieve the optimal balance among several different response variables is developed. Existing case studies are solved by the proposed method and the results are compared with ones by the sum of SN ratios, the expected weighted loss, the desirability function, and EXTOPSIS model.

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