83 research outputs found

    Selection of Line Contingency for Power System Security Analysis

    Get PDF
    Contingency analysis (CA) has always been an in integral part of power system security analysis. CA is a useful tool at disposal of operation personnel to see effects of future outages on the system. The overload Performance Index (PI) is a good index for ranking the contingencies as per their severity. The PI requires “n” number of DC analysis to create a complete index, where n is no of lines. And for a larger network having a higher multitude of lines, it is time consuming. A new approach has been discussed for ranking the contingencies. This method requires one DC analysis and line outage distribution factor, which is constant for a particular unchanged transmission network

    Small and Medium-sized Enterprises’ carbon footprint reduction initiatives as a catalyst for green jobs: A systematic review and comprehensive business strategy agenda:SMEs Carbon Footprint reduction initiatives

    Get PDF
    Motivated by the growing attention on climate change, this study provides an up-to-date and comprehensive systematic literature review (SLR) on Small and Medium-sized Enterprises (SMEs) carbon footprint reduction initiatives and green jobs. Based on datasets from databases that include Web of Science, Scopus, ProQuest and Google Scholar, we conducted a SLR of 70 published articles spanning 2012 to 2022. Using VOSviewer and InfraNodus, bibliographic cluster analysis revealed the existence of three clusters namely; the role of green job initiatives and green human resource management in SMEs (cluster 1); green innovation, green Initiatives, green strategy and circular economy in SMEs (cluster 2); carbon footprint reduction initiatives, carbon performance, carbon management and carbon emission in SMEs (cluster 3). We found that SMEs adopt green supply chain, employing energy-saving strategies, eco-friendly waste reductions and recycling, circular economy, and green office practices. The study results indicate that these carbon footprint initiatives can lead to green job creation since green competences are required to implement green initiatives. However, value propositions relating to carbon reduction initiatives within SMEs need to be integrated with employee engagement.Additionally, the SLR identifies future research areas that include exploring the association among SMEs carbon footprint, green innovation and green jobs, and strategies to enhance climate change initiatives. Consequently, we call for future research to focus on the design of green jobs tracking and carbon footprint reduction reporting framework to support SMEs' green initiatives. The findings have key policy implications for SME owners, policymakers, practitioners, and future researchers. <br/

    A Formalized Model of Multiple Selves in MUD’s

    Get PDF
    We will investigate the concept of the self (and its relation to personal identity in multiple cyber worlds). This investigation has its own justification, the fact that several questions concerning personal identity are answered by constructing examples of thought experiments involving fictional worlds. Thus it seems legitimate to us to discuss the problem in the framework of “concrete” alternative worlds which we call cyber worlds. The next section deals with a brief history of the problem of personal identity in modern philosophy and introduces the concept of the “self”. In section 2 we introduce conceptual frameworks that illustrate the idea of the self as composed of information in multiple cyber worlds and as a result pose some important questions to be investigated further, we finally conclude with section 3 and we consider how some concepts from anthropology may be applied to the study of the Cyberspace. Some authors tend to confuse, or overlap the concept of virtual communities or reality with the concept of Cyberspace because this is a rather vague concept. In this paper we consider virtual communities and virtual reality as just one portion of the Cyberspace. At the moment we are not going to try to answer fundamental ontological questions such as: what is Cyberspace? Is it or does it have a dimension? We assume that there exists a Cyberspace, a sort of electromagnetic space (and this space may be divide into modules), where a virtual interaction might be created and we will refer to this as a virtual world

    Small and Medium-sized Enterprises’ carbon footprint reduction initiatives as a catalyst for green jobs: A systematic review and comprehensive business strategy agenda:SMEs Carbon Footprint reduction initiatives

    Get PDF
    Motivated by the growing attention on climate change, this study provides an up-to-date and comprehensive systematic literature review (SLR) on Small and Medium-sized Enterprises (SMEs) carbon footprint reduction initiatives and green jobs. Based on datasets from databases that include Web of Science, Scopus, ProQuest and Google Scholar, we conducted a SLR of 70 published articles spanning 2012 to 2022. Using VOSviewer and InfraNodus, bibliographic cluster analysis revealed the existence of three clusters namely; the role of green job initiatives and green human resource management in SMEs (cluster 1); green innovation, green Initiatives, green strategy and circular economy in SMEs (cluster 2); carbon footprint reduction initiatives, carbon performance, carbon management and carbon emission in SMEs (cluster 3). We found that SMEs adopt green supply chain, employing energy-saving strategies, eco-friendly waste reductions and recycling, circular economy, and green office practices. The study results indicate that these carbon footprint initiatives can lead to green job creation since green competences are required to implement green initiatives. However, value propositions relating to carbon reduction initiatives within SMEs need to be integrated with employee engagement.Additionally, the SLR identifies future research areas that include exploring the association among SMEs carbon footprint, green innovation and green jobs, and strategies to enhance climate change initiatives. Consequently, we call for future research to focus on the design of green jobs tracking and carbon footprint reduction reporting framework to support SMEs' green initiatives. The findings have key policy implications for SME owners, policymakers, practitioners, and future researchers. <br/

    Multiple Personalities and the Proteus Effect in Collaborative Virtual Environments. A Wittgensteinian Viewpoint

    Get PDF
    What does it mean to be you? How drastically can a person change and still remain, in the eyes of either themselves or their peers, the same person? Until recently, these questions were typically asked in the context of philosophy, psychoanalysis, or science fiction. However, the increasingly common use of avatars during computer-mediated communication, collaborative virtual environments (CVE' s) in particular, are quickly changing these once abstract questions into practical quandaries that are fascinating, thought-provoking, potentially paradigm shifting for those who study social interaction, and potentially devastating to the traditional concept of human communication. Given the advent of collaborative virtual reality (CVR) technology, researchers have begun to systematically explore the phenomena of Transformed Social Interaction (TSI).    The Proteus effect is a particular application of TSI in which a user's self-representation is modified in a meaningful way that is often dissimilar to the physical self. When the user then interacts with another person, the user's behaviour conforms to the modified self-representation regardless of the true physical self or the others impressions. In an earlier introductory paper we detailed a conceptual framework that illustrated the idea of the self as composed of information in multiple cyberworlds, this tentative framework was utilised to explain a “layering” feedback process that may occur as a result of the self interacting in a CVE, in addition we expanded this framework to integrate an anthropological viewpoint of the self.    In this paper our intention is to provide further understanding of the relationship between the Proteus effects and the conceptual model of multiple virtual personalities interacting in CVE using the Wittgensteinian language games framework, we expand our earlier paper to suggest that the notions of a “virtual personality” and “virtual game grammar” may hopefully bring a refreshing approach to examining the Proteus effect

    Delayed healthcare seeking and prolonged illness in healthcare workers during the COVID-19 pandemic: a single-centre observational study

    Get PDF
    Objectives: To describe a cohort of self-isolating healthcare workers (HCWs) with presumed COVID-19. / Design: A cross-sectional, single-centre study. / Setting: A large, teaching hospital based in Central London with tertiary infection services. / Participants: 236 HCWs completed a survey distributed by internal staff email bulletin. 167 were women and 65 men. / Measures: Information on symptomatology, exposures and health-seeking behaviour were collected from participants by self-report. / Results: The 236 respondents reported illness compatible with COVID-19 and there was an increase in illness reporting during March 2020 Diagnostic swabs were not routinely performed. Cough (n=179, 75.8%), fever (n=138, 58.5%), breathlessness (n=84, 35.6%) were reported. Anosmia was reported in 42.2%. Fever generally settled within 1 week (n=110/138, 88%). Several respondents remained at home and did not seek formal medical attention despite reporting severe breathlessness and measuring hypoxia (n=5/9, 55.6%). 2 patients required hospital admission but recovered following oxygen therapy. 84 respondents (41.2%) required greater than the obligated 7 days off work and 9 required greater than 3 weeks off. / Conclusion: There was a significant increase in staff reporting illness compatible with possible COVID-19 during March 2020. Subsequent serology studies at the same hospital study site have confirmed sero-positivity for COVID-19 up to 45% by the end of April 2020 in frontline HCWs. The study revealed a concerning lack of healthcare seeking in respondents with significant red flag symptoms (severe breathlessness, hypoxia). This study also highlighted anosmia as a key symptom of COVID-19 early in the pandemic, prior to this symptom being more widely recognised as a feature of COVID-19

    Do not mention Russia: A theoretical framework for bank penalties due to economic sanction violations and policy implications

    Get PDF
    In this paper, penalties to banks violating economic sanctions have been investigated and discussed. This topic has sparked renewed interest and attention following the beginning of the conflict in Ukraine due to the Russian aggression in February 2022 and the ongoing general deterioration in the global economic climate. Thus, based on the experience with penalties to banks for violations of economic sanctions from 2007, a theoretical model has been proposed. It is proposed that this model may be informative in devising the optimal level of penalties based on behavioral characteristics of banks and regulators. The model is based on the economic examination of the motives and incentives for bank misconduct, by drawing on the Shapiro-Stiglitz model addressing typical consequences of asymmetric information in principal-agent models. From a policy perspective, the proposed model also has the potential to provide opportunities for standardization of restrictions posed on banks as a result of bank misconduct. Relevant policy implications concerning penalties are put forward that may be implemented for future considerations, particularly in cases related to violations of economic sanctions

    Modulation by S-nitrosoglutathione (a natural nitric oxide donor) of photosystem in Pisum sativum leaves, as revealed by chlorophyll fluorescence: Light-dependent aggravation of nitric oxide effects

    Get PDF
    The reported effects of nitric oxide (NO), a signaling molecule, on the photochemical components of leaves are ambiguous. We examined the changes by a natural NO donor, S-nitrosoglutathione (GSNO). The effect of GSNO on Pisum sativum leaves was studied after a 3-hour exposure in dark, moderate (ML), or high light (HL). The NO levels in GSNO-treated samples were at their maximum under HL, compared to those under ML or dark. Most of the elevated NO was decreased by 2-4-carboxyphenyl-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide (cPTIO), a NO scavenger, confirming the NO increase. Treatment with GSNO caused inhibition of photosynthesis/respiration and restricted electron transport mediated by both photosystem (PS)II and PSI. However, the inhibition by NO-donor of PSII components was stronger than those of PSI. A marked increase in the PSI acceptor side limitation [Y(NA)] and a decrease in PSI donor side limitation [Y(ND)] indicated an upregulation of cyclic electron transport, possibly to balance the damage to PSII by GSNO. We suggest that NO aggravated the HL-induced inhibition of photosynthesis and dark respiration

    Small- and medium-sized enterprises' carbon footprint reduction initiatives as a catalyst for green jobs: A systematic review and comprehensive business strategy agenda

    Get PDF
    Motivated by the growing attention on climate change, this study provides an up-to-date and comprehensive systematic literature review (SLR) on Small and Medium-sized Enterprises (SMEs) carbon footprint reduction initiatives and green jobs. Based on datasets from databases that include Web of Science, Scopus, ProQuest and Google Scholar, we conducted a SLR of 70 published articles spanning 2012 to 2022. Using VOSviewer and InfraNodus, bibliographic cluster analysis revealed the existence of three clusters namely; the role of green job initiatives and green human resource management in SMEs (cluster 1); green innovation, green Initiatives, green strategy and circular economy in SMEs (cluster 2); carbon footprint reduction initiatives, carbon performance, carbon management and carbon emission in SMEs (cluster 3). We found that SMEs adopt green supply chain, employing energy-saving strategies, eco-friendly waste reductions and recycling, circular economy, and green office practices. The study results indicate that these carbon footprint initiatives can lead to green job creation since green competences are required to implement green initiatives. However, value propositions relating to carbon reduction initiatives within SMEs need to be integrated with employee engagement.Additionally, the SLR identifies future research areas that include exploring the association among SMEs carbon footprint, green innovation and green jobs, and strategies to enhance climate change initiatives. Consequently, we call for future research to focus on the design of green jobs tracking and carbon footprint reduction reporting framework to support SMEs' green initiatives. The findings have key policy implications for SME owners, policymakers, practitioners, and future researchers
    corecore