Call admission control using cell breathing concept for wideband CDMA

This paper presents a Call Admission Control (CAC) algorithm based fuzzy logic to maintain the quality of service using cell breathing concept. When a new call is accepted by a cell, its current user is generally affected due to cell breathing. The proposed CAC algorithm accepts a new call only if the current users in the cell are not jeopardized. Performance evaluation is done for single-cell and multicell scenarios. In multicell scenario dynamic assignment of users to the neighboring cell, so called handoff, has been considered to achieve a lower blocking probability. Handoff and new call requests are assumed with handoff being given preference using a reserved channel scheme. CAC for different types of services are shown which depend upon the bandwidth requirement for voice, data and video. Distance, arrival rate, bandwidth and nonorthogonality factor of the signal are considered for making the call acceptance decision. The paper demonstrates that fuzzy logic with the cell breathing concept can be used to develop a CAC algorithm to achieve a better performance evaluation

Extending dynamic capabilities towards lean thinking in humanitarian supply chains

Humanitarian supply chain (HSC) research is still in its infancy and remains an enigma, due to its profound differences with the much-researched field of global supply chains. Thus, humanitarian operations (HO) remain obstinately difficult to manage, despite attempts by key stakeholders to keep abreast of all the contemporary challenges. A key concern is wastage of disaster relief materials along the supply chain, which strains already scarce resources. Moreover, humanitarian research is plagued by a dearth of theory development and redeployment of existing theories from other fields, which are critical in enhancing methodological rigour. To address these gaps, we undertake an in-depth qualitative study which draws on data from humanitarian organisations that responded to the major earthquake in Nepal (2015). Using a novel approach, we adapt the theory of constraints (TOC) and dynamic capabilities to conduct our investigation. First, we apply TOC at an analytical level to unearth the constraints perturbing HO. Second, using dynamic capabilities as an overarching theoretical lens, we draw insights which contribute towards effective HSC management. To conclude, our study contributes by extending the dynamic capabilities theory for Lean thinking in HO. We achieve this by proffering ‘sustaining’ as a key extension of dynamic capabilities in HSC

Knowledge sharing for innovation performance improvement in micro/SMEs: an insight from the creative sector

As economies become more reliant on innovative, knowledge-intensive firms, understanding the interaction between knowledge and improving innovation performance is increasingly important. Although most UK businesses are micro, small or medium-sized enterprises (micro/SMEs), knowledge management research has tended to focus on large companies Knowledge sharing can be critical for innovation performance, especially for smaller players with limited resources. Our study presents an insight from micro/SMEs operating in the highly knowledge-intensive and innovative games/entertainment software development sector. Using a mixed method approach, we investigate knowledge sharing and its contribution to firm innovation performance improvements. Our findings suggest that micro/SMEs are at the forefront of the creative sector precisely because of their smaller size. Our study reveals evidence of knowledge donation but limited evidence of knowledge collection in the knowledge sharing process. We develop a model highlighting the importance of industry context, individual knowledge and organizational size in knowledge sharing for innovation performance

Extending dynamic capabilities towards lean thinking in humanitarian supply chains

© 2020 Informa UK Limited, trading as Taylor & Francis Group. Humanitarian supply chain (HSC) research is still in its infancy and remains an enigma, due to its profound differences with the much-researched field of global supply chains. Thus, humanitarian operations (HO) remain obstinately difficult to manage, despite attempts by key stakeholders to keep abreast of all the contemporary challenges. A key concern is wastage of disaster relief materials along the supply chain, which strains already scarce resources. Moreover, humanitarian research is plagued by a dearth of theory development and redeployment of existing theories from other fields, which are critical in enhancing methodological rigour. To address these gaps, we undertake an in-depth qualitative study which draws on data from humanitarian organisations that responded to the major earthquake in Nepal (2015). Using a novel approach, we adapt the theory of constraints (TOC) and dynamic capabilities to conduct our investigation. First, we apply TOC at an analytical level to unearth the constraints perturbing HO. Second, using dynamic capabilities as an overarching theoretical lens, we draw insights which contribute towards effective HSC management. To conclude, our study contributes by extending the dynamic capabilities theory for Lean thinking in HO. We achieve this by proffering ‘sustaining’ as a key extension of dynamic capabilities in HSC

Reducing food waste and food insecurity in the UK: the architecture of surplus food distribution supply chain in addressing the sustainable development goals (Goal 2 and Goal 12.3) at a city level

The paradox that tonnes of food is wasted while people go hungry has raised concern from national and international authorities. In developed countries, reducing these problems has focused on surplus food distribution as a ‘win-win’ solution contributing to sustainable development goals. While the existing literature acknowledges the role of third-sector organisations, research on the supply chain of surplus food distribution and the coordination among actors is limited. This research explores actors and organisations in the value chain of surplus food distribution at the city level. Based on semi-structured interviews and participant observation, our findings highlight the need for a coordinated effort between actors as an essential arrangement to capture the value of surplus food. Despite the close cooperation, hierarchical power relationships exist between organisations in the supply chain. We unpack challenges in the surplus food supply chain, such as lack of a legislative framework for food donations and organisational sustainability issues that have forced third-sector organisations to work independently to reduce the uncertainties of food quality and quantity. We shed light on the practical implications by highlighting how multiple stakeholders could improve the efficiency of surplus food distribution

Closed-loop digital meditation improves sustained attention in young adults.

Attention is a fundamental cognitive process that is critical for essentially all aspects of higher-order cognition and real-world activities. Younger generations have deeply embraced information technology and multitasking in their personal lives, school and the workplace, creating myriad challenges to their attention. While improving sustained attention in healthy young adults would be beneficial, enhancing this ability has proven notoriously difficult in this age group. Here we show that 6 weeks of engagement with a meditation-inspired, closed-loop software program (MediTrain) delivered on mobile devices led to gains in both sustained attention and working memory in healthy young adults. These improvements were associated with positive changes in key neural signatures of attentional control (frontal theta inter-trial coherence and parietal P3b latency), as measured by electroencephalography. Our findings suggest the utility of delivering aspects of the ancient practice of focused-attention meditation in a modern, technology-based approach and its benefits on enhancing sustained attention

Closed-loop digital meditation improves sustained attention in young adults.

Attention is a fundamental cognitive process that is critical for essentially all aspects of higher-order cognition and real-world activities. Younger generations have deeply embraced information technology and multitasking in their personal lives, school and the workplace, creating myriad challenges to their attention. While improving sustained attention in healthy young adults would be beneficial, enhancing this ability has proven notoriously difficult in this age group. Here we show that 6 weeks of engagement with a meditation-inspired, closed-loop software program (MediTrain) delivered on mobile devices led to gains in both sustained attention and working memory in healthy young adults. These improvements were associated with positive changes in key neural signatures of attentional control (frontal theta inter-trial coherence and parietal P3b latency), as measured by electroencephalography. Our findings suggest the utility of delivering aspects of the ancient practice of focused-attention meditation in a modern, technology-based approach and its benefits on enhancing sustained attention