• Title/Summary/Keyword: model studies

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Effects of Two Chemotherapy Regimens, Anthracycline-based and CMF, on Breast Cancer Disease Free Survival in the Eastern Mediterranean Region and Asia: A Meta-Analysis Approach for Survival Curves

  • Zare, Najaf;Ghanbari, Saeed;Salehi, Alireza
    • Asian Pacific Journal of Cancer Prevention
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    • v.14 no.3
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    • pp.2013-2017
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    • 2013
  • Background: To compare the effects of two adjuvant chemotherapy regimens, anthracycline-based and cyclophosphamide, methotrexate, fluorourical (CMF) on disease free survival for breast cancer patients in the Eastern Mediterranean region and Asia. Methods: In a systematic review with a multivariate mixed model meta-analysis, the reported survival proportion at multiple time points in different studies were combined. Our data sources were studies linking the two chemotherapy regimens on an adjuvant basis with disease free survival published in English and Persian in the Eastern Mediterranean region and Asia. All survival curves were generated with Graphdigitizer software. Results: 14 retrospective cohort studies were located from electronic databases. We analyzed data for 1,086 patients who received anthracycline-based treatment and 1,109 given CMF treatment. For determination of survival proportions and time we usesb the transformation Ln (-Ln(S)) and Ln (time) to make precise estimations and then fit the model. All analyses were carried out with STATA software. Conclusions: Our findings showed a significant efficacy of anthracycline-based adjuvant therapy regarding disease free survival of breast cancer. As a limitation in this meta-analysis we used studies with different types of anthracycline-based regimens.

The Development of Information Science in Ibero-America

  • Araujo, Carlos Alberto Avila
    • Journal of Information Science Theory and Practice
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    • v.7 no.4
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    • pp.6-19
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    • 2019
  • The purpose of this article is to problematize the existence of a possible Ibero-American informational thinking. It was initially observed that a relative absence of Ibero-America in the international presentations and mappings of information science exists. Below, the reality of the 22 countries that compose Ibero-America is discussed, a region that can be understood from a sociocultural and geopolitical perspective. Then, a mapping of the information science research in these countries is made. The main research topics found are: epistemological studies, relationships with library science, information literacy, representation and organization, bibliometric studies, information management, user studies, technological dimensions, and relationships with archival science and museum studies. Finally, a general epistemological configuration of information science is presented at a global level, highlighting the great trends of study of information that marked the decades of the 1960s and 1970s (physical model), 1980s and 1990s (cognitive model), and the 21st century (sociocultural model), and which manifested themselves in the different subareas that make up the field. The most recent research in information science, in addition to addressing information transfer (physical dimension) and its relationship with data and knowledge (cognitive dimension), has also incorporated aspects related to the social effects of information, its role in the constitution of identities and culture, and the importance of its material conformations. Such expansion reflects attempts to address the complexity of informational phenomena. Therefore, it is concluded that it is important to place the specific contributions of Ibero-America in this context.

A Comparative Study of Internet Banking Satisfaction Model in South Korea and Indonesia

  • Wati, Yulia;Koo, Chul-Mo
    • Asia pacific journal of information systems
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    • v.19 no.4
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    • pp.1-28
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    • 2009
  • Banking industries have continuously innovated through technology-enhanced products and services. Many studies have recognized the importance of the Internet in banking industries, arguing that it has been widely adopted. Many studies published on the Internet banking in specific countries are mostly related with such issues as internet banking adoption and acceptance, security and risks of online banking system, and interface design. Several studies have been done to examine the differences and similarities between other banking channels and the Internet banking. However, to the best of our knowledge, only a limited number of studies has examined the differences and similarities between two specific countries in order to create a new customer satisfaction model. In this research, we studied the internet banking satisfaction model by comparing two countries: South Korea and Indonesia. We conducted an empirical study based on the data collected in both two countries. In this research, we found that countries which have adopted electric banking services, particularly between a country with high ICT adoption and a country with low ICT adoption, show different satisfaction trends. Based on the study results, herein we provide discussion, managerial, and practical implications.

Business Models Proposal for Korean Open Source GIS Software Companies (국내 오픈소스 공간정보 소프트웨어 관련 기업의 비즈니스 모델 제안)

  • Son, Se-Rin;Kang, Youngok
    • Journal of Cadastre & Land InformatiX
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    • v.48 no.1
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    • pp.187-199
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    • 2018
  • The purpose of this study is to propose an open source GIS software business model for the revitalization of Korean open source GIS software industry. In this study, we categorized the types of open source software business models and developed an open source software business strategy suitable for GIS companies in Korea. To propose a business model, we applied the business model canvas which is often used in the area of business studies to analyze new business models. We tried to develop the open source GIS business model through both interviews and case studies with Korean open source GIS software companies. We propose three different types of open source GIS software business models such as distributor model, producer model, and 3rd party service provider model as follows: first, the companies which belong to distributor model can carry out business by providing professional services in the market of open source software. Second, the companies which belong to producer model can sell their products to the global market as well as the domestic market. Lastly, given the growing interest in domestic open source software, the number of third-party service providers is likely to continue to increase in the future. Therefore, it is expected that the companies which belong to the third party service provider model will be able to develop various business models by securing the technology.

Children of Divorced Families (이혼 가족 아동)

  • Park, Kyung-Ja;Choi, Hye-Yeong;Han, Jun-Ah
    • Korean Journal of Child Studies
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    • v.30 no.6
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    • pp.323-336
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    • 2009
  • There has been a significant increase in the number of divorced families during the past 10 years in Korea. Divorce imposes a great impact on their children as well as divorcees. As many as 1.41 million children under 20 years-old have experienced their parents' divorce in past 10 years. Children are faced with much difficulty in adjustment after the parental divorce. Issues of the research and policy on the divorced family are discussed in this study. For future studies, a longitudinal research model, father-custody and grandparent-custody families, custody parents's gender, a theoretical model for Korean divorced families should be considered. New legislations have been recently enacted to enhance children's well-being, but further efforts such as the involvement of child development specialists in the divorce process should be followed in the pursuit of the best interest of the children.

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Salient Factors of the Users' Intention and Commitment in Wireless Internet Service (무선인터넷 서비스 이용 의도와 몰입에 영향을 미치는 요인)

  • Kang, Seong-Soo;Lee, Kook-Yong;Lee, Young-Soo
    • International Commerce and Information Review
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    • v.8 no.2
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    • pp.3-35
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    • 2006
  • Until now, most of the studies about the internet service have focused mainly on the adoption of on-line(wired) internet services, while there have relatively been very few studies about the adoption and usage of wireless or mobile internet services. The generic model explaining the adoption behaviors of wireless internet services has not been made yet. Previous studies of that area is not so easy to find. The purposes of this paper are two-folds. The first is to find the factors affecting the users' intention and commitment behavior of mobile internet services. The second is to find the relative importance of the factors in users making decisions about users' usage intention and commitment behavior. In the theoretical part of this paper, the precedent studies concerning the technology acceptance model and the theories of on-line internet services adoption, the theories of the mobile internet services, are reviewed and analyzed.

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Effects of the Pharmacopuncture in Animal Models for Treatment of Osteoporosis: A Review of Animal Study Reports Published in Korea (골다공증 동물모델에서 약침치료에 대한 국내 연구보고 고찰)

  • Kim, Jung-min;Choi, Soo-min;An, Hee-Duk
    • Journal of Korean Medicine Rehabilitation
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    • v.26 no.2
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    • pp.75-83
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    • 2016
  • Objectives This study is to review the effect of pharmacopuncture on treatment of osteoporosis in animal models reported in korean domestic journals. Methods The databases (Koreantk, KISS, NDSL) were searched with term as osteoporosis, and animal study reports on osteoporosis with pharmacopuncture were reviewed. Animal model, intervention, and osteoporosis indicator were extracted. Results 22 articles were reviewed. 11 studies used ddy mouse and 9 studies used SD rat. 20 studies used ovariectomy to induce osteoporosis. 21 studies used simple pharmacopuncture. Cervi pantotrichum cornu was most frequently used pharmacopuncture and Umgok (KI10) was most frequently used acupuncture point. Each study shows significant changes of osteoporosis indicators. Conclusions Pharmacopuncture is expected to be a positive effect on osteoporosis.

Predicting Sustainable Personal Protective Equipment (PPE) Purchase Intention after the Pandemic: An Application of Health Belief Model

  • Zhu, Zong-Yi;Kim, Hyeon-Cheol
    • International journal of advanced smart convergence
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    • v.11 no.4
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    • pp.253-259
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    • 2022
  • This study aims to investigate the antecedent of consumer personal preventive equipment purchase behaviour by extending the HBM model after the pandemic. Pandemic related studies have focused on the effect of perceived susceptibility and perceived severity on consumer preventive behaviour, little studies have investigated the antecedents of consumer perceived risk. This study filled the gaps in the previous studies. This study tested all proposed hypotheses among users who have purchase the self-preventive behaviour. In final 253 valid data were collected through online survey for statistics analysis. This study found that consumer's health consciousness significantly impacted consumer's perceived severity of COVID-19 and perceived risk. Perceived risk positively impacted consumer self-preventive equipment purchase intention. In contrast, perceived susceptibility did not significantly consumer perceived risk. Based on these results, the theoretical implication will be offered on the study of health-related studies and will be given insight for disease control center to effectively manage consumer self-preventive behaviour.

A Study on Conceptual Design through Function-to-Process Flow Model Transformation (기능 모형으로부터 프로세스 흐름 모형으로의 변환을 통한 시스템의 개념적 설계에 대한 연구)

  • 박찬권;신기태;박남규;박진우
    • The Journal of Society for e-Business Studies
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    • v.1 no.2
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    • pp.49-76
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    • 1996
  • An industrial process is a sequence of steps intended to perform a useful task in an industrial organization, and can be described using a model or a representation framework such as function model, information model, process flow model, etc. Many researchers, however, claim that, all those models from different perspectives are required to describe complex systems such as CIMS. Thus these perspectives should be put together to build an optimal system. And the need for interconnection or transformation among different view points has arisen for effective communications between system developers and easy propogation of local changes in a model. But it seems to be difficult to integrate such models into a unified framework as they describe different aspects of the system on different purposes. This study is an attempt to interconnect these different perspectives, and thereby to support conceptual design of systems in a more effective manner. A methodology to transform the IDEFO functional model into a process flow model is proposed. The validity of the proposed approach is tested by developing a prototye of a computer-assisted design system on the operation processes of FMS installed at Seoul National University - Automation and Systems Research Institute.

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