1,720,963 research outputs found
Critical Success Factors for Adoption of National Electronic Procurement System in the Public Sector in Tanzania.
Full text linkThis study aimed at examining the critical success factors influencing e-procurement adoption system in the public sector in Tanzania. In particular, the study assessed the influences and mediation effects of the legal framework, performance expectancy, relative advantage, and attitude towards e-procurement adoption. It adopted a deductive approach and a cross-sectional survey research design. Stratified sampling technique was used with a sample size of 157 respondents. Questionnaire and documentary review were used for data gathering. Some gathered data were analyzed using descriptive statistics with the help of IBM SPSS Statistics 21. Partial Least Squares Structural Equation Modeling with the help of SmartPLS 3 software was used for inferential statistical analysis. Findings reveal that the legal framework and relative advantage have indirect influences while performance expectancy has direct and indirect influences towards adoption of Tanzania National Electronic Procurement System. Additionally, attitude has direct influence towards adoption of the Tanzania National Electronic Procurement System. These findings imply that the decision of procurement experts and suppliers to adopt the system depends on awareness of all assessed critical success factors influencing the Tanzania National Electronic Procurement System. The study concludes that all assessed critical success factors have influences towards adoption of Tanzania National Electronic Procurement System. The study recommends to the government to strategize and ensure the benefits, performance expectancy and the legal framework supporting the adoption of Tanzania National Electronic Procurement System are realized by all users of the public procurement system towards its reform and expansion.
Keywords: Adoption, attitude, performance, legal framework and relative advantage
Theorized model for e-procurement system in developing countries: evidence from Tanzania
Full text linkThe adoption of e-procurement systems in developing countries is progressing slowly due to several challenges and barriers. Likewise, the adoption of e-procurement systems has been extensively studied, with research focusing on direct effects of factors like transparency and compatibility. This research aimed to evaluate the direct and indirect effects of relative advantage and performance expectancy on the adoption of e-procurement systems by combining components from the Technology, Organization, and Environment model with a modified Unified Theory of Acceptance and Use of Technology. This was accomplished by analyzing the function of attitude as a mediator and the legal framework as a moderator in the suggested study model. This study used a cross-sectional survey research design, together with a stratified sampling technique, to acquire a sample size of 367 respondents. The data were acquired via the distribution of questionnaires and the examination of relevant documents. The collected data underwent descriptive analysis using IBM SPSS statistics version 26, and inferential analysis was performed using PLS-SEM with the assistance of SmartPLS 4 software. The study\u27s results validate a significant statistical moderating impact of the legal framework on the relationship between performance expectancy and attitude towards adoption of e-procurement system. On the other hand, adoption of e-procurement system is impacted by performance expectancy and relative advantage, which have both direct and indirect significances. Attitudes have a direct impact on the adoption of e-procurement system. This study proposes that future research should include respondents from several countries to improve the applicability of the suggested model
The determinants of use behavior of e-procurement system in developing countries: a mediating effect of buyers’ and suppliers’ attitude from Tanzania
Full text linkThe existing body of literature on e-procurement adoption has not adequately predicted the direct and indirect impact of performance expectancy and effort expectancy on the usage behavior of e-procurement system through the attitude of users. This paper focuses on analyzing the direct and indirect effects of various factors that influence the usage behavior of e-procurement systems in Tanzania. The paper was guided by the Social Information Processing (SIP) theory, the Affect Infusion Model (AIM), and the modified Unified Theory of Acceptance and Use of Technology (UTAUT). The paper also used a deductive perspective and an explanatory cross-sectional survey research approach. A stratified sampling technique was used to identify 383 respondents (buyers and suppliers) that use the e-procurement system. Data gathering was conducted via the use of a documentary review and questionnaire. Inferential statistical analysis was conducted using the Partial Least Squares Structural Equation Modeling, with the assistance of SmartPLS 4 software. The results indicate that performance expectancy, effort expectancy, and attitude significantly influence positively the usage behavior of the e-procurement system (p value<0.05). The paper finds that the behavior of buyers and suppliers, after the adoption of an e-procurement system, is indirectly impacted by the system\u27s performance expectancy and effort expectancy, via their positive attitudes. The results of this study confirm the usefulness of the proposed research model in directing management decision-making, particularly in determining the importance of investment considerations when implementing or improving an e-procurement system
The The Influence of Green Supplier Selection Practices on Social Performance in Tanzanian Hospitals: an Evidence From Muhimbili National Hospital
No full textThis study explores the influence of green supplier selection practices on social performance at Muhimbili National Hospital (MNH), Tanzania’s leading referral hospital. With increasing global attention on sustainable procurement and its alignment with SDGs, particularly Goals 12 and 13, this research investigates how integrating sustainability criteria in supplier selection can improve waste management, delivery timeliness, and cost efficiency within the healthcare supply chain. Despite regulatory frameworks like Tanzania's Public Procurement Act (2023), challenges such as poor supplier compliance, weak monitoring, and limited awareness persist. Grounded in the Resource-Based View theory and employing a mixed-methods approach, this study fills a research gap by empirically examining whether green supplier practices such as environmental certification and compliance with green regulations positively impact social performance at MNH. Findings aim to inform hospital administrators, policymakers, and researchers about the strategic value of sustainable procurement in enhancing operational and social outcomes. The results reveal a moderate to strong positive correlation (R = 0.650) between green supplier selection practices and social performance, with 48% of the variability in social performance explained by sustainability criteria, supplier environmental certification, and compliance with green regulations (R² = 0.480). The ANOVA results (F = 9.600, p = 0.000) confirm the statistical significance of these predictors. Coefficient analysis shows positive and significant contributions from sustainability criteria (β = 0.355, p = 0.020), supplier environmental certification (β = 0.276, p = 0.018), and compliance with green regulations (β = 0.221, p = 0.032). Perception data supports these findings, with high ratings for suppliers investing in renewable energy (mean = 4.09) and compliance with environmental regulations (mean = 4.00). However, lower ratings for prioritizing sustainable suppliers (2.55) and evaluating waste minimization efforts (2.37) highlight gaps in policy enforcement and awareness. Moderate scores for audits and supplier engagement (means ≈ 2.55–2.90) indicate the need for improved monitoring and collaboration. Overall, MNH demonstrates progress in integrating green procurement, but stronger enforcement, enhanced training, and deeper supplier partnerships are essential to maximize social and environmental benefits
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
- …
