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After COVID-19: time to agree a biosecurity code of conduct under the Biological and Toxin Weapons Convention
Get PDFYesThe devastating COVID-19 disease outbreak of 2020 is likely to cause a profound rethink of how national and international communities deal with such outbreaks whether they are caused naturally, accidentally or deliberately. This paper suggests that now is the time to build on two decades of work within the BTWC and for States Parties to agree on a Biosecurity Code of Conduct under the Convention as proposed by China. Over the past two decades, as part of their attempts to strengthen the BTWC and thereby to help prevent the development of biological and toxin weapons, States Parties have given considerable attention to the potential utility of Codes of Conduct for life and associated scientists. This paper reviews these debates about this novel dual-use ethical challenge within the Convention and concludes that a Code of Conduct should be agreed at the 2021 Review Conference, but that radical reorientation of the mandatory education of such scientists will also be needed to make the agreed code effective
The Automated Solar Activity Prediction System (ASAP) Update Based on Optimization of a Machine Learning Approach
No full textNoQuite recently, considerable attention has been paid to solar flare prediction because extreme solar eruptions could affect our daily life activities and on different technologies. Therefore, this paper presents a novel method of the development of improved second-generation of the Automated Solar Activity Prediction system (ASAP). The suggested algorithm improves the ASAP system by expanding a period of training vector and generating new machine learning rules to be more successful. Two neural networks are responsible for determining whether the sunspots group will release flare as well as determining if the flare is an M-class or X-class. Several measurement criteria are applied to determine the extent of system performance also all results are provided in this paper. Furthermore, the quadratic score (QR) is used as a metric criterion to compare between the prediction of the proposed algorithm with the Space Weather Prediction Center (SWPC) between 2012 and 2013. The results exhibit that the proposed algorithm outperforms the old ASAP system. Keywords: Solar flares, Machine Learning, Neural network, Space, Prediction, weather
Gaining strategic insights into Logistics 4.0: expectations and impacts
Get PDFYesThe developments brought by Industry 4.0 have spread to various components in a supply chain, where logistics is of utmost importance due to the intermediate role of logistics service providers (LSPs) operating among different actors. Despite such a vital role, the extant literature lacks from the extensive analysis of Industry 4.0 implementations in the logistics industry, particularly for LSPs. Accordingly, this study sets out to investigate, comprehensively, Industry 4.0 projections in logistics and their reflections on LSPs by adopting a multidimensional approach. In this respect, the key themes influenced by Industry 4.0 developments are initially determined through a structured survey conducted in the Turkish logistics industry. Then, in the same industry, both the probabilities and the impacts of Industry 4.0-focused thematic statements are examined through an integrative interview survey, which also incorporates ‘why-type’ of questions. Consequently, this study offers academic implications in terms of demonstrating possible changes in the logistics industry from the operational, financial, and human resources aspects. Additionally, the findings serve as a reference for logistics professionals while fostering their competitive Industry 4.0 initiatives and facilitating their strategic decisions
Free surface air entrainment and single-bubble movement in supercritical open-channel flow
Get PDFYesThere has been little study on the microscopic bubble entrainment and diffusion process on the high-speed self-aerated flows although the problem under investigation is theoretically important and has important engineering application. This study presents an experimental investigation on visual processes of free surface air entrainment and single bubble diffusion in supercritical open channel flows. The typical surface deformation, single air bubble rising and penetration are recorded using a high-speed camera system. Results show that for a single bubble formation process, surface entrapment development and bubble entrainment through a deformation evolution underneath the free surface are the two main features. The shape variation of local surface deformation with time follows an identical power law for different bubble size generations. The entrained bubble size depends on both size scale and shape of entrapped free surface. As the single bubble moves downstream, its longitudinal velocity is approximately the same as that of water flow surrounded it, while its vertical velocity for rising and penetration increases with the increase of the water flow velocity. An empirical-linear relationship for the bubble rising and penetration velocity with water flow velocity is obtained. This study demonstrates that the microscopic bubble movement can improve the self-aeration prediction in the open channel flow and advance the knowledge of our understanding of the macroscopic and microscopic air–water properties in hydraulic engineering.National Natural Science Foundation of China (Grant number 51609162), Sichuan Science and Technology Program (Grant number 2019JDTD0007) and the Open funding of the State Key Laboratory of Hydraulics and Mountain River Engineering of Sichuan University (Project No: Skhl1809)
The whole tooth and nothing but the tooth: or why temporal resolution of bone collagen may be unreliable
Get PDFYesThe carbon (δ13C) and nitrogen (δ15N) isotope ratios of human bone collagen have been used extensively over the last 40 years to investigate the diet of past populations. It has become apparent that bone collagen can give an unreliable temporal dietary signature especially in juveniles. With higher temporal resolution sampling of collagen from tooth dentine, it is possible to identify short‐term changes in diet previously invisible in bone. This paper discusses the inherent problems of using bone collagen for dietary studies and suggests better sample choices which can make our interpretations more robust, using breastfeeding and weaning as an example.The modern data was collected and analysed using funding from the Rank Prize Funds New Investigator Award and sponsorship from DB Orthodontics, Bradford. The Tooth Fairy team acknowledges the support of the National Institute for Health Research Clinical Research Network (NIHR CRN).Research Development Fund Publication Prize Award winner, February 2020
Advances in social media research: past, present and future
Get PDFYesSocial media comprises communication websites that facilitate relationship forming between users from diverse backgrounds, resulting in a rich social structure. User generated content encourages inquiry and decision-making. Given the relevance of social media to various stakeholders, it has received significant attention from researchers of various fields, including information systems. There exists no comprehensive review that integrates and synthesises the findings of literature on social media. This study discusses the findings of 132 papers (in selected IS journals) on social media and social networking published between 1997 and 2017. Most papers reviewed here examine the behavioural side of social media, investigate the aspect of reviews and recommendations, and study its integration for organizational purposes. Furthermore, many studies have investigated the viability of online communities/social media as a marketing medium, while others have explored various aspects of social media, including the risks associated with its use, the value that it creates, and the negative stigma attached to it within workplaces. The use of social media for information sharing during critical events as well as for seeking and/or rendering help has also been investigated in prior research. Other contexts include political and public administration, and the comparison between traditional and social media. Overall, our study identifies multiple emergent themes in the existing corpus, thereby furthering our understanding of advances in social media research. The integrated view of the extant literature that our study presents can help avoid duplication by future researchers, whilst offering fruitful lines of enquiry to help shape research for this emerging field
Iran's 2019-2020 demonstrations: the changing dynamics of political protests in Iran
No full textNoThe widespread protests of November 2019 may be marked as the bloodiest recent chapter of the Islamic Republic of Iran's history in terms of popular dissent. The two major protests in December 2017 and November 2019, followed by the public reaction to the shooting down of the Ukrainian International Airlines Flight 752 by the IRGC over Tehran after the US killing of General Soleimani, suggest that the prevailing dynamics of political protest in Iran are changing. There is an increasing sense of radicalisation among protesters, while the state is prepared to resort to extreme violence to maintain control. The geography of political protest has changed. The declining economic situation has had a profound impact on the more vulnerable segments of the society who are now increasingly playing a more proactive role in challenging the state. The methods of protest have been evolving over the last four decades, especially in the cultural arena. Last but not least, the willingness of the protesters both to endure and inflict violence is precipitously transforming state-society relations beyond recognition.
This article begins by providing a brief overview of protest in the history of the Islamic Republic, up to the public reaction to the 2020 downing of the Ukrainian airline over Tehran. This provides a historical context to assess the ways in which both the political climate and protests have changed over the last four decades. A section identifying and analysing the factors which have created the current political cul-de-sac then follows. The changing dynamics of the protests are the result of the existing political gridlock and the economic crisis, and it is thus important to evaluate the prevailing conditions which have paved the way for the radicalisation of political climate in Iran. The final section examines the changing dynamics of political protest
The sound of chemistry: Translating infrared wavenumbers into musical notes
Get PDFYesThe abstract nature of physical chemistry and spectroscopy makes the
subject difficult to comprehend for many students. However, bridging arts and science
has the potential to provide innovative learning methods and to facilitate the
understanding of abstract concepts. Herein, we present a high-school project based on
the conversion of selected infrared absorbances of well-known molecules into audible
frequencies. This process offered students a unique insight into the way molecules and
chemical bonds vibrate, as well as an opportunity to develop their creativity by
producing musical pieces related to the molecules they synthesized. We believe that
experiencing chemistry from an alternative viewpoint opens up new perspectives not
only for student learning but also for the decompartmentalization of scientific and
artistic disciplines.This project was supported by the Royal Society (Partnership Grant no. PG\170122 to NPEB and NG and University Research Fellowship no. UF150295 to NPEB) and the Academy of Medical Sciences/the Wellcome Trust/the Government Department of Business, Energy and Industrial Strategy/the British Heart Foundation springboard Award [SBF003\1170 to NPEB]
Regulatory Focus, Persistence and New Venture Performance
Get PDFYesPurpose
The purpose of this article was to examine the joint effects of regulatory focus, entrepreneurial persistence, and institutional support on new venture performance.
Design/methodology/approach
This paper uses a random survey approach to sample 204 new ventures from Ghana. The moderated mediation method was used to analyze the survey data.
Findings
The findings from this paper show that entrepreneurs’ promotion focus positively relates to persistence whiles prevent focus negatively influences persistence. Besides, persistence mediates the link between regulatory focus (promotion and prevention focus) and new venture performance. These relationships are positively moderated by perceived institutional support.
Research limitations/implications
Using data from only the manufacturing sector in Ghana limits the generalisability of this paper. Also, persistence was not observed or measured directly in this paper but was only used as a self-reporting variable that captures an individual’s tendency to persist.
Originality/value
The contribution of this paper is threefold. First, this paper contributes to regulatory focus literature by enhancing our knowledge of how self-regulation could help explain entrepreneurial decision-making. Second, this paper broadens self-regulation literature by adding institutional context as a moderating variable. Third, this paper helps clarify the potential role of persistence in entrepreneurship