Dynamical properties and scaling behavior of self-propelled particles: Langevin dynamics

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Layla Amallah ◽  
Ahmed Hader ◽  
Mohammed Tanasehte ◽  
Yassine Hariti ◽  
Yahia Boughaleb
Keyword(s):  
Collective Motion ◽  
Equilibrium Phase ◽  
Langevin Dynamics ◽  
Scaling Behavior ◽  
New Approach ◽  
Content Type ◽  
Dynamical Properties ◽  
The One ◽  
Practical Implications ◽  
Biological Organisms

PurposeThe aim of the present paper is to investigate the behavior of collective motion of living biological organisms in the two-dimensional (2D) plane by adopting a new approach based on the use of Langevin dynamics. Langevin dynamics is a powerful tool to study these systems because they present a stochastic process due to collisions between their constituents.Design/methodology/approachIn this paper, the dynamical properties and scaling behavior of self-propelled particles were studied numerically by using Langevin dynamics. These dynamics have been affected by the use of only the alignment zone of radius R.FindingsThe results indicated that the system’s velocity increases with time and reaches to finite value at the equilibrium phase.Research limitations/implicationsThis result is more consistent with that of Vicsek’s model. However, the system’s velocity decreases exponentially with the applied noise without taking the zero value for the highest noise value.Practical implicationsAs well as, the crossover time of the growth kinetic system decreases exponentially with noise.Social implicationsScaling behavior has been checked for this system and the corresponding results prove that behavior scales with the same law of the one in Vicsek’s model but with different scaling exponents.Originality/valueThe phase transition observed in Vicsek’s model cannot be reproduced by the Langevin dynamics model, which describes more about the dynamical properties of self-propelled systems.

How Phillips saw the light

2020 ◽  
Vol 36 (8) ◽  
pp. 29-31
Keyword(s):  
Design Methodology ◽  
Reading Time ◽  
Daily Basis ◽  
Business World ◽  
Content Type ◽  
Freak Show ◽  
The World ◽  
Pertinent Information ◽  
The One ◽  
Practical Implications

Purpose Reviews the latest management developments across the globe and pinpoints practical implications from cutting-edge research and case studies. Design/methodology/approach This briefing is prepared by an independent writer who adds their own impartial comments and places the articles in context. Findings The problem with developing a reputation of being something of an oracle in the business world is that all of a sudden, everyone expects you to pull off the trick of interpreting the future on a daily basis. Like a freak show circus act or one-hit wonder pop singer, people expect you to perform when they see you, and they expect you to perform the thing that made you famous, even if it is the one thing in the world you don’t want to do. And when you fail to deliver on these heightened expectations, you are dismissed as a one trick pony, however good that trick is in the first place. Originality/value The briefing saves busy executives and researchers hours of reading time by selecting only the very best, most pertinent information and presenting it in a condensed and easy-to-digest format.

Development of insect repellent finish by a simple coacervation microencapsulation technique

2018 ◽  
Vol 30 (2) ◽  
pp. 152-158 ◽  
Author(s):  
Rachna Sharma ◽  
Alka Goel
Keyword(s):  
Essential Oils ◽  
Design Methodology ◽  
Insect Repellent ◽  
New Approach ◽  
Content Type ◽  
Eucalyptus Oil ◽  
Gum Acacia ◽  
Major Benefit ◽  
Natural Insecticide ◽  
Practical Implications

Purpose The paper focused onto the development of microcapsules by using two essential oils. It proposes the uses of eucalyptus oil and cedarwood oil as a natural insecticide. The purpose of this paper is to demonstrate the application of developed microcapsules to impart insect repellency on textile substrate. Design/methodology/approach The paper opted for an experimental study using two essential oils and gum in formations of microcapsules through a simple coaseravtion encapsulation technique. The developed solution was analyzed, including confirmation of size and structure through. Application of developed finish on substrate was also undertaken to prove better ability as repellent fabric. Findings The paper highlights useful invention of microencapsulated fabric developed with the combination of gum acacia and eucalyptus oil as core and shell material. The developed fabric has better ability to repel silverfish as compared to microencapsulated fabric developed with gum acacia (shell) and cedarwood oil (core). Research limitations/implications Due to the lack of time and less availability of essential oils, only two oils were used to test the insect repellent behavior. Practical implications This paper fulfills an identified need, it includes implications for the development of a very useful natural insecticide to repel silverfish (Lepisma saccharina) insect. This insect is a very common problem found in cloth wardrobes and bookshelves; it mainly attacks the fabric with cellulosic content and starch. Social implications Society will get major benefit of using these microencapsulated finished fabrics, which repel silverfish from their home and keep their clothing and books safe for longer period. The natural fragrance and medicinal benefits of these essential oils can never be ignored. Originality/value This study sets a new approach to repel insects like silverfish from the bookshelves and clothing wardrobes. A layer of insect repellent microencapsulated finished fabric can be added in these shelves and wardrobes. It is an eco-friendly approach of using natural essential oils instead of chemical insecticides.

Supply resource management: Salomon and his network of subcontractors in Romania

2017 ◽  
Vol 33 (2) ◽  
pp. 4-6
Author(s):  
Richard Calvi
Keyword(s):  
Supply Chain ◽  
Resource Management ◽  
Competitive Advantage ◽  
Strategic Decisions ◽  
Content Type ◽  
External Resources ◽  
Internal Resources ◽  
The One ◽  
Practical Implications

Purpose According to Christopher (2000), in a lot of sectors, the competition is a question of supply chain against supply chain. The winner in term of competitive advantage should be the one, who is able to obtain more than the competitor from the available resources. In strategic literature, Dyer and Singh (1998) are the first who introduced the concept of “relational competency” to explain why some companies gain their competitive advantage not directly from their internal resources but mainly because they are able better to combine external resources. Design/methodology/approach This paper is a case study. Findings The author describes the different phases and strategic decisions in the building of a real supplier eco-system. Research limitations/implications It is a sole case study. Practical implications This study is a description of a success story. Originality/value This study is a description of an external resource management in action.

scholarly journals Putting resilient sustainability into strategy decisions – case studies

2018 ◽  
Vol 56 (7) ◽  
pp. 1598-1612 ◽  
Author(s):  
Julie Winnard ◽  
Jacquetta Lee ◽  
David Skipp
Keyword(s):  
Case Studies ◽  
Real World ◽  
Design Methodology ◽  
Strategic Decision ◽  
New Approach ◽  
Content Type ◽  
Industrial Companies ◽  
Different Types ◽  
Strategic Decision Support ◽  
Practical Implications

Purpose The purpose of this paper is to report the results of testing a new approach to strategic sustainability and resilience – Sustainable Resilient Strategic Decision-Support (SuReSDS™). Design/methodology/approach The approach was developed and tested using action-research case studies at industrial companies. It successfully allowed the participants to capture different types of value affected by their choices, optimise each strategy’s resilience against different future scenarios and compare the results to find a “best” option. Findings SuReSDS™ enabled a novel integration of environmental and social sustainability into strategy by considering significant risks or opportunities for an enhanced group of stakeholders. It assisted users to identify and manage risks from different kinds of sustainability-related uncertainty by applying resilience techniques. Users incorporated insights into real-world strategies. Research limitations/implications Since the case studies and test organisations are limited in number, generalisation from the results is difficult and requires further research. Practical implications The approach enables companies to utilise in-house and external experts more effectively to develop sustainable and resilient strategies. Originality/value The research described develops theories linking sustainability and resilience for organisations, particularly for strategy, to provide a new consistent, rigorous and flexible approach for applying these theories. The approach has been tested successfully and benefited real-world strategy decisions.

Design and analysis of a climbing robot for pylon maintenance

2018 ◽  
Vol 45 (2) ◽  
pp. 206-219
Author(s):  
Xiaolong Lu ◽  
Shiping Zhao ◽  
Xiaoyu Liu ◽  
Yishu Wang
Keyword(s):  
Design Methodology ◽  
Adhesion Force ◽  
External Surface ◽  
Climbing Robot ◽  
Design And Development ◽  
New Approach ◽  
Content Type ◽  
Rotary Joint ◽  
Inspection And Maintenance ◽  
Practical Implications

Purpose The purpose of this paper is to describe the design and development of “Pylon-Climber II”, a 5-DOF biped climbing robot (degree of freedom – DOF) for moving on the external surface of a tower and assisting the electricians to complete some maintenance tasks. Design/methodology/approach The paper introduces a pole-climbing robot, which consists of a 5-DOF mechanical arm and two novel grippers. The gripper is composed of a two-finger clamping module and a retractable L-shaped hook module. The robot is symmetrical in structure, and the rotary joint for connecting two arms is driven by a linear drive mechanism. Findings The developed prototype proved a new approach for the inspection and maintenance of the electricity pylon. The gripper can reliably grasp the angle bars with different specifications by using combined movement of the two-finger clamping module and the retractable L-shaped hook module and provide sufficient adhesion force for the Pylon-Climber II. Practical implications The clamping experiments of the gripper and the climbing experiments of the robot were carried out on a test tower composed of some angle bars with different specification. Originality/value This paper includes the design and development of a 5-DOF biped climbing robot for electricity pylon maintenance. The climbing robot can move on the external surface of the electric power tower through grasping the angle bar alternatively. The gripper that is composed of a two-finger gripping module and a retractable L-shaped hook module is very compact and can provide reliable adhesion force for the climbing robot.

From the boundaries of management to the management of boundaries

2019 ◽  
Vol 25 (3) ◽  
pp. 391-413 ◽  
Author(s):  
Andrea Caputo ◽  
Raffaele Fiorentino ◽  
Stefano Garzella
Keyword(s):  
Best Practices ◽  
Business Processes ◽  
Relevant Literature ◽  
Firm Boundaries ◽  
Content Type ◽  
Multiple Partners ◽  
The One ◽  
Development And Management ◽  
Practical Implications

PurposeThe purpose of this paper is to examine some of the new capabilities that are required for the facilitation of business processes management (BPM) in the current political and technological landscape. Specifically, the goal is to investigate the role of firm boundaries, from a business processes perspective, in new contexts in which the affirmation of digitalization requires more integration across a complex network of partners.Design/methodology/approachThe paper is based on a review of relevant literature on BPM, firm boundaries and negotiation. By critically integrating this literature, a framework is developed with the objective of supporting the management of boundaries.FindingsBPM, new competitive contexts, and the technological landscape require the development and management of boundary capabilities. Among these capabilities, “boundary management” – how managers coordinate resources, activities and business processes on the boundaries of the firm – should play a key role. Moreover, as managers must continuously interact with multiple partners in digital supply chains, the organizational model of negotiation serves as a means of effectively managing firm boundaries.Practical implicationsThe framework offers insights and guidelines that can help practitioners manage the boundaries of business processes. The authors encourage a focus on business processes occurring at firm boundaries. Furthermore, the authors encourage the development of new capabilities in response to the needs of practitioners to ensure best practices of negotiation.Originality/valueThis study shifts the emphasis of BPM from the boundaries of management to the management of boundaries. By shedding light on new capabilities required, this paper enriches the BPM literature and can assist, on the one hand, in reconfiguring business processes in the new political and technological landscape and, on the other hand, in facilitating effective negotiation.

Examining the interrelatedness between ontologies and Linked Data

2017 ◽  
Vol 35 (2) ◽  
pp. 312-331 ◽  
Author(s):  
Biswanath Dutta
Keyword(s):  
Real World ◽  
Linked Data ◽  
Current Work ◽  
Successful Implementation ◽  
World Systems ◽  
Ongoing Research ◽  
Content Type ◽  
Web Technologies ◽  
The One ◽  
Practical Implications

Purpose Ontology and Linked Data (LD) are the two prominent web technologies that have emerged in the recent past. Both of them are at the center of Semantic Web and its applications. Researchers and developers from both academia and business are actively working in these areas. The increasing interest in these technologies promoted the growth of LD sets and ontologies on the web. The purpose of this paper is to investigate the possible relationships between them. The effort is to investigate the possible roles that ontologies may play in further empowering the LD. In a similar fashion, the author also studies the possible roles that LD may play to empower ontologies. Design/methodology/approach The work is mainly carried out by exploring the ontology- and LD-based real-world systems, and by reviewing the existing literature. Findings The current work reveals, in general, that both the technologies are interdependent and have lots to offer to each other for their faster growth and meaningful development. Specifically, anything that we can do with LD, we can do more by adding an ontology to it. Practical implications The author envisions that the current work, in the one hand, will help in boosting the successful implementation and the delivery of semantic applications; on the other hand, it will also become a food for the future researchers in further investigating the relationships between the ontologies and LD. Originality/value So far, as per the author’s knowledge, there are very little works that have attempted in exploring the relationships between the ontologies and LD. In this work, the author illustrates the real-world systems that are based on ontology and LD, discusses the issues and challenges and finally illustrates their interdependency discussing some of the ongoing research works.

Hopes and fears

2015 ◽  
Vol 29 (3) ◽  
pp. 27-29
Keyword(s):  
Design Methodology ◽  
Reading Time ◽  
Business Organizations ◽  
Operating Environment ◽  
Content Type ◽  
Technological Developments ◽  
Pertinent Information ◽  
New Challenges ◽  
The One ◽  
Practical Implications

Purpose – This paper aims to review the latest management developments across the globe and pinpoint practical implications from cutting-edge research and case studies. Design/methodology/approach – This briefing is prepared by an independent writer who adds their own impartial comments and places the articles in context. Findings – To say it is tough for business organizations today would be a massive understatement. Thanks largely to globalization and technological developments, the operating environment has arguably become more competitive than ever before. Firms thus need to constantly evolve in order to meet the array of new challenges which regularly face them. For those unable to adapt, survival and prosperity may ultimately be elusive. Change has invariably proved to be something of a double-edged sword. On the one hand, it can signal opportunity and prompt excitement and anticipation. But many others see change in terms of threat. Practical implications – The paper provides strategic insights and practical thinking that have influenced some of the world’s leading organizations. Originality/value – The briefing saves busy executives and researchers hours of reading time by selecting only the very best, most pertinent information and presenting it in a condensed and easy-to-digest format.

Implementation of the START:AV in a secure adolescent service

2014 ◽  
Vol 16 (3) ◽  
pp. 184-193 ◽  
Author(s):  
Marilyn A. Sher ◽  
E. Gralton
Keyword(s):  
Dynamic Assessment ◽  
Implementation Process ◽  
Quantitative Information ◽  
Content Type ◽  
Measure Change ◽  
The One ◽  
The Uk ◽  
Assessment Procedures ◽  
Practical Implications ◽  
Multi Disciplinary Team

Purpose – The purpose of this paper is to establish gaps in training, involve staff in the implementation process by incorporating their views on what is helpful and what can be improved, as well as provide information that might be helpful to other sites who are considering implementing the START:AV. Design/methodology/approach – The current study is the first to examine a START:AV implementation and survey a multi-disciplinary team on their views about implementation in a medium secure service for adolescents in the UK. The survey was adapted from the one used by Collins et al. (2008). Once surveys were received the qualitative information was collated to explore themes, and frequency analysis was undertaken on the quantitative information. Findings – The staff survey on the implementation of the START:AV highlighted a number of strengths and challenges. There was significant support for the START:AV in relation to it being a dynamic assessment to measure change, that focuses equally on strengths and vulnerabilities, making the process individualised. Users of the START:AV reported that the process of rating the START:AV as a team improved communication, teamwork, generated discussion and improved the detailed understanding of the patient being rated. Staff felt it was generally straightforward to use in terms of strengths and vulnerability ratings, but some difficulties emerged regarding making finer distinctions in ratings as well as completing risk formulations, highlighting further training needs. There was also some confusion about differentiating between certain strengths and vulnerabilities, leading to “double ratings”. Other difficulties highlighted centred on time and increasing workload. Research limitations/implications – The main limitation of the study relates to the low response rate to the survey (31 per cent). Practical implications – Recommendations for implementation and evaluation of new risk assessment procedures are made. Originality/value – The current study is the first to examine a START:AV implementation and survey a multi-disciplinary team on their views about implementation in a medium secure service for adolescents in the UK.

Closing the delivery gap

2018 ◽  
Vol 31 (4) ◽  
pp. 327-336
Author(s):  
Kevin Peter Fiori ◽  
Jennifer Schechter ◽  
Sesso Christophe Gbeleou ◽  
Sandra Braganza ◽  
Joseph Rhatigan ◽  
...  
Keyword(s):  
Service Delivery ◽  
Value Chain ◽  
Design Methodology ◽  
Care Delivery ◽  
New Approach ◽  
Content Type ◽  
Continuous Quality ◽  
Practical Implications ◽  
Comprehensive Mapping ◽  
Hiv Aids

Purpose The purpose of this paper is to describe the authors’ experience operationalizing the care delivery value chain (CDVC) as a management and continuous quality improvement (QI) approach to strengthen HIV/AIDS services provided in Northern Togo through addressing gaps across a care continuum. Design/methodology/approach The authors led a series of discussions to develop a CDVC specific to existing HIV/AIDS services in Northern Togo. Using the CDVC framework, 28 specific gaps in service delivery were identified and integrated into a strategic QI plan. Findings At 12 months, 92 percent of delivery gaps had demonstrated improvement. The CDVC framework proved to be valuable in the following ways. First, it facilitated the first comprehensive mapping of HIV/AIDS services in the Kara region of Togo. Second, it enabled the identification of gaps or insufficiencies in the currently available services across the full continuum of care. Third, it catalyzed the creation of a strategic QI plan based on identified gaps. Research limitations/implications This case description is the authors’ experience in one setting and should not be considered comparative in nature. Furthermore, the approach described may not be applicable to all initiatives and/or organizations. As described, the lack of sophisticated and comprehensive data collection systems limited the authors’ ability to collect reliable data on some of the QI initiatives planned. Practical implications The operationalization of the CDVC framework is an effective approach to drive continuous QI. Originality/value Through the operationalization of the CDVC, the authors developed a new approach for assessing existing services, identifying gaps in service delivery and directing continuous QI initiatives in a strategic manner.

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