6,054 research outputs found
Evaluating Partnerships in Sustainability-Oriented Food Supply Chain: A Five-Stage Performance Measurement Model
No full textThis study aims to investigate how overall food supply chain performance (FSCP) often depends on the performance of partners in a sustainable and energy-efficient supply chain. Initially, the study classifies the FSCP and further examines the partner relationships in sustainability-oriented food supply chain (FSC). To do so, the study proposes and formally tests a five-stage performance measurement model. The present research mainly focuses on the Indian food industry. Results highlight significant direct and indirect positive performance relationships between the different FSC stages. The structural equation modeling analysis highlights that producer’s performance positively impacts supplier’s performance, processor’s performance, and distributor’s performance. Moreover, supplier’s performance positively impacts processor’s performance, distributor’s performance, and retailer’s performance, and also processor’s performance positively impacts both distributor’s performance and retailer’s performance. Lastly, distributor’s performance positively impacts retailer’s performance. The study suggests that regular performance improvement at each FSC stage would improve the performance of the next stage players. Most importantly, the direct impact of each partner’s performance is comparatively high on its immediate next partner’s performance. Furthermore, this study will assist practitioners to understand various FSCP measurement issues and make significant improvements in their sustainable and energy-efficient supply chain practices
Managing sustainability in luxury industry to pursue circular economy strategies
No full textSustainable luxury research has received growing attention in the most recent years as it requires firms and supply chains to design circular business models and strategies to tackle environmental, financial, and social issues. However, previous research still falls short to deepen how luxury firms design and manage sustainable supply chain practices according to the circular principles. This paper adopts bibliometric and network analysis to evaluate a sample of 747 papers published over the last 35 years. The descriptive statistics and science mapping approaches utilizing cocitation analysis were performed with VOSviewer software to contribute to the ongoing development of sustainability in luxury research with the aim to develop a systemic framework for circular supply chain and offer a comprehensive overview on the topic. The main findings of this paper will help academicians and practitioners to improve the body of knowledge on the topic and provide an overview of promising future research avenues
What we learn is what we earn from sustainable and circular construction
No full textSustainable and circular construction entails emissions and wastes reduction through the reuse and recycling of materials to achieve economic gains and save resources for future generations. This work aims to map the academic research on sustainable and circular construction from different imperative angles on the Web of Science (WoS) database. In this line, we classified and reviewed the existing research using a bibliometric and network analysis approach into the following themes: life cycle assessment (LCA), green assessment tools, technologies and methods, quantification of recycling of waste and energy, building information modeling (BIM), greenhouse gas emissions in construction, and greenhouse gas emissions in the specific case of novel construction types. The study provides a bird-eye-view of existing qualitative and quantitative research findings within the themes above. Subsequently, the study highlights the future research avenues within each theme to develop the domain further. The work will assist practitioners and policy-makers in understanding the current status of sustainable and circular construction and suggest necessary actions to attain environmental sustainability
Exploration and exploitation in the development of more entrepreneurial universities: A twisting learning path model of ambidexterity
No full textThe paper conducts a systematic literature review on the development process of universities towards the entrepreneurial model to provide a conceptual framework and a strategic research agenda. From the analysis of the body of literature on the topic, exploration and exploitation emerge as critical processes in the development of entrepreneurial universities. Nevertheless, the way they are balanced within universities is an under-researched topic. Adapted from the concept of organisational ambidexterity, this paper develops the notion of university ambidexterity to analyse the development process of entrepreneurial universities. To achieve this research aim, a conceptual model is developed by integrating the learning processes of exploration and exploitation to the previous theories used to analyse the entrepreneurial university. As already emphasised in other studies focusing on the role of ambidexterity in different research contexts, this paper proposes an idea of balance over time. The universities need to balance exploration and exploitation in their evolutionary path towards the entrepreneurial model, but it may be not necessary to invest in exploration and exploitation processes simultaneously. On the contrary, it may be most important to oscillate between periods of exploration and periods of exploitation to achieve ambidexterity over time. As a result, the tensions between exploration and exploitation processes generate a twisting learning path for entrepreneurial universities. Finally, the paper proposes an integrated conceptual framework which consists of six constructs, namely internal organisational environment, external environment, university exploration, university exploitation, university ambidexterity, entrepreneurial university performance. The proposed research hypotheses on the interrelationships between the mentioned constructs and the mediating role of university ambidexterity constitute potential areas of investigation to direct future empirical research and further develop the body of knowledge in the field of entrepreneurial universities
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No full textReproduction Rights Universitas Scientiarum is licensed under Creative Commons: Attribution - Noncommercial - No derivative works, 2.5 of Colombia. Consequently, it can be electronically reproduced, distributed and publically communicated, provided the authors and the Pontificia Universidad Javeriana are acknowledged. Commercial use of this work is not permitted. Modifications to the original work, and distribution of modified copies are prohibited. Upon acceptance of the article, the author will send the journal’s Office a printed and signed license of economic rights transfer, which authorizes its reproduction in Universitas Scientiarum (the license can be downloaded from the journal website; http://revistas.javeriana.edu.co/scientarium/web; http://revistas.javeriana.edu.co/scientarium/ojs). Such permission will infer the author’s acceptance of the article’s dissemination not only on paper but also in electronic media, that is, in websites and in national and international bibliographic databases. The magazine accepts pre-print articles, previously uploaded to e-print servers (OAI - such as arxiv.org)
Estimation in threshold autoregressive models with a stationary and a unit root regime
No full textThis paper treats estimation in a class of new nonlinear threshold autoregressive models with both a stationary and a unit root regime. Existing literature on nonstationary threshold models have basically focused on models where the nonstationarity can be removed by differencing and/or where the threshold variable is stationary. This is not the case for the process we consider, and nonstandard estimation problems are the result. This paper proposes a parameter estimation method for such nonlinear threshold autoregressive models using the theory of null recurrent Markov chains. Under certain assumptions, we show that the ordinary least squares (OLS) estimators of the parameters involved are asymptotically consistent. Furthermore, it can be shown that the OLS estimator of the coefficient parameter involved in the stationary regime can still be asymptotically normal while the OLS estimator of the coefficient parameter involved in the nonstationary regime has a nonstandard asymptotic distribution. In the limit, the rate of convergence in the stationary regime is asymptotically proportional to n-1/4, whereas it is n-1 in the nonstationary regime. The proposed theory and estimation method are illustrated by both simulated data and a real data example.Autoregressive process; null-recurrent process; semiparametric model; threshold time series; unit root structure.
Interpreting null findings from trials of alcohol brief interventions
No full textThe effectiveness of alcohol brief intervention (ABI) has been established by a succession of meta-analyses but, because the effects of ABI are small, null findings from randomized controlled trials are often reported and can sometimes lead to skepticism regarding the benefits of ABI in routine practice. This article first explains why null findings are likely to occur under null hypothesis significance testing (NHST) due to the phenomenon known as ‘the dance of the p-values’. A number of misconceptions about null findings are then described, using as an example the way in which the results of the primary care arm of a recent cluster randomized trial of ABI in England (the SIPS project) have been misunderstood. These misinterpretations include the fallacy of ‘proving the null hypothesis’ that lack of a significant difference between the means of sample groups can be taken as evidence of no difference between their population means, and the possible effects of this and related misunderstandings of the SIPS findings are examined. The mistaken inference that reductions in alcohol consumption seen in control groups from baseline to follow-up are evidence of real effects of control group procedures is then discussed and other possible reasons for such reductions, including regression to the mean, research participation effects, historical trends, and assessment reactivity, are described. From the standpoint of scientific progress, the chief problem about null findings under the conventional NHST approach is that it is not possible to distinguish ‘evidence of absence’ from ‘absence of evidence’. By contrast, under a Bayesian approach, such a distinction is possible and it is explained how this approach could classify ABIs in particular settings or among particular populations as either truly ineffective or as of unknown effectiveness, thus accelerating progress in the field of ABI research
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No full textEn este artículo el autor analiza la definición de reconstrucción del tejido social en relación con los temas sobre el derecho a la ciudad, marginamiento urbano y desplazamiento forzado en Colombia. El autor considera la reconstrucción del tejido social como el conjunto de actos orientados a reconstruir las relaciones significativas que determinan formas particulares de ser, producir, interactuar y proyectarse en los ámbitos familiar, comunitario, laboral y ciudadano. Además, como un proceso pedagógico y vital donde son importantes las redes de apoyo social, la atención integral al ser humano, el fortalecimiento de la acción colectiva y el apoyo a la autogestión.In this paper the author analyze the definition reconstruction of the social tissue in relation with the themes right to city, urban marginality and forced migrations in Colombia. The author considers the reconstruction of the social tissue as the set of acts to reconstruct the significant relations that determine particular forms of being, producing, interacting and projecting in the family, community, labour and citizen contexts. Also as a pedagogic and vital process where they are important the nets of social support, the integral attention to the human being, the invigoration of the collective action and the support to the self-management
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