Cyber-physical-social-information-thinking hyperspace: a manifold of cyberspatial entities

Kybernetes ◽  
2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Anas Maazu Kademi ◽  
Ahmet Hasan Koltuksuz
Keyword(s):  
Social Information ◽  
Physical Space ◽  
Space Time ◽  
Information Space ◽  
Content Type ◽  
Time Compression ◽  
Theoretical Approaches ◽  
Fundamental Understanding ◽  
Query Node ◽  
And Behavior

PurposeThis paper aims to establish a theoretic framework to provide a fundamental understanding of cyberspatial objects, their existence and their identification scheme while providing a connection between cyber-enabled spaces and cyberspace. It develops an avenue to quantify general philosophical and theoretical questions, precisely, inherently spatial basis that produces an unprecedented space–time continuum, in which cyber-enabled relations evolve.Design/methodology/approachMultidisciplinary theoretical approaches are needed to describe complex systems, which in this paper are integrated in a quest for the principles underlying the structural organization and dynamics of cyberspace. A theoretic framework is presented, and the spatial conception of cyber-enabled physical, social, information and thinking spaces and entities existence are provided.FindingsWith spatial objects and spatial properties, cyberspace is inherently spatial. Its basic constructs are founded on its spatial qualities and producing radical space–time compression, cyber-enabled spaces in which dynamic relations develop and thrive. The cyberspatial object operations are primarily built on foundations that depend on physical space and other spatial metaphors. Information space, basically missing in the literature, is an important part of cyberspace.Research limitations/implicationsThis work suggested a novel analytical approach to describing cyberspace from broader perspectives and fields. Due to the novelty and divergence of cyber concepts, an interdisciplinary study and methodology are needed. Thus, more research toward theoretical direction could help many of the practical implementations of concepts.Practical implicationsThe research is of particular significance in cyberspatial mechanics to describe the dynamics and behavior of cyber physical systems. For example, object-based analysis functions like spatial query, node pattern analysis, cluster analysis, spatial similarity analysis and location modeling.Originality/valueComplementing the existing literature and defining information space to the research sphere, a theoretical framework providing a fundamental understanding of cyberspatial objects and the general cyberspace foundation has been proposed, resulting in a formalized concept of existence, interactions and applications and services, with respect to philosophy, science and technology, respectively.

scholarly journals Exogenous Alginate Protects Staphylococcus aureus from Killing by Pseudomonas aeruginosa

2019 ◽  
Vol 202 (8) ◽  
Author(s):  
Courtney E. Price ◽  
Dustin G. Brown ◽  
Dominique H. Limoli ◽  
Vanessa V. Phelan ◽  
George A. O’Toole
Keyword(s):  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Physical Space ◽  
Late Time ◽  
Protective Effects ◽  
Content Type ◽  
Alginate Production ◽  
The Impact

ABSTRACT Cystic fibrosis (CF) patients chronically infected with both Pseudomonas aeruginosa and Staphylococcus aureus have worse health outcomes than patients who are monoinfected with either P. aeruginosa or S. aureus. We showed previously that mucoid strains of P. aeruginosa can coexist with S. aureus in vitro due to the transcriptional downregulation of several toxic exoproducts typically produced by P. aeruginosa, including siderophores, rhamnolipids, and HQNO (2-heptyl-4-hydroxyquinoline N-oxide). Here, we demonstrate that exogenous alginate protects S. aureus from P. aeruginosa in both planktonic and biofilm coculture models under a variety of nutritional conditions. S. aureus protection in the presence of exogenous alginate is due to the transcriptional downregulation of pvdA, a gene required for the production of the iron-scavenging siderophore pyoverdine as well as the downregulation of the PQS (Pseudomonas quinolone signal) (2-heptyl-3,4-dihydroxyquinoline) quorum sensing system. The impact of exogenous alginate is independent of endogenous alginate production. We further demonstrate that coculture of mucoid P. aeruginosa with nonmucoid P. aeruginosa strains can mitigate the killing of S. aureus by the nonmucoid strain of P. aeruginosa, indicating that the mechanism that we describe here may function in vivo in the context of mixed infections. Finally, we investigated a panel of mucoid clinical isolates that retain the ability to kill S. aureus at late time points and show that each strain has a unique expression profile, indicating that mucoid isolates can overcome the S. aureus-protective effects of mucoidy in a strain-specific manner. IMPORTANCE CF patients are chronically infected by polymicrobial communities. The two dominant bacterial pathogens that infect the lungs of CF patients are P. aeruginosa and S. aureus, with ∼30% of patients coinfected by both species. Such coinfected individuals have worse outcomes than monoinfected patients, and both species persist within the same physical space. A variety of host and environmental factors have been demonstrated to promote P. aeruginosa-S. aureus coexistence, despite evidence that P. aeruginosa kills S. aureus when these organisms are cocultured in vitro. Thus, a better understanding of P. aeruginosa-S. aureus interactions, particularly mechanisms by which these microorganisms are able to coexist in proximal physical space, will lead to better-informed treatments for chronic polymicrobial infections.

Expanding knowledge frontiers in entrepreneurship: examining bricolage and effectuation

2020 ◽  
Vol 26 (5) ◽  
pp. 1043-1065
Author(s):  
Vanessa Vasconcelos Scazziota ◽  
Tales Andreassi ◽  
Fernando Antonio Ribeiro Serra ◽  
Luiz Guerrazzi
Keyword(s):  
Decision Process ◽  
Design Methodology ◽  
Knowledge Bases ◽  
Research Trends ◽  
Bibliographic Coupling ◽  
Content Type ◽  
Methodological Feature ◽  
Theoretical Approaches ◽  
And Behaviors ◽  
Opportunity Creation

PurposeOur purpose is to evaluate effectuation and bricolage through their unique and shared references to understand possible overlaps and conceptual complementarities between these theoretical approaches.Design/methodology/approachThe use of bibliometric techniques to examining simultaneously both theoretical approaches is one of the distinctions of this work. Another important methodological feature is the use of co-citation and bibliographic coupling and their interaction, to verify 179 published documents relating to their references.FindingsThe study reveals the intellectual structures underlying the approaches and differences originating from their knowledge bases, as well as the research trends.Originality/valueBy identifying the differences in the decision process and behaviors that culminate in opportunity creation in each, it offers a complementary vision of previous works. The evidence stresses it is interesting to explore their integration, considering the complementarity of their unique aspects.

Risk perception and awareness of earthquake: the case of Dhaka

2019 ◽  
Vol 10 (1) ◽  
pp. 65-82 ◽  
Author(s):  
Mohammad Lutfur Rahman
Keyword(s):  
Risk Perception ◽  
Data Collection ◽  
Seismic Risk ◽  
Public Awareness ◽  
Content Type ◽  
Earthquake Preparedness ◽  
Level Of Knowledge ◽  
Seismic Risk Perception ◽  
The Many ◽  
And Behavior

Purpose Among the many studies about risk perception, only a few deal with Bangladesh. Paul and Bhuiyan’s (2010) study has shown the earthquake-preparedness level of residents of Dhaka, but there are some biases in the data collection. This paper aims to examine the seismic-risk perception and the level of knowledge on earthquake and preparedness among the residents of Dhaka. Design/methodology/approach A questionnaire was developed, and data collection was undertaken through home and sidewalk surveys. This paper investigates how attitude, perception and behavior differ depending on gender, age, education and casualty awareness. This research tries to examine and make a comparison of the risk perception and preparedness level between different groups of gender, age and level of education. Findings This research shows that female respondents have a much better risk perception of and are better prepared for earthquakes than male respondents; younger people have a higher knowledge about earthquake preparedness than older people and less-educated people are at a higher risk of unpreparedness than more-educated people. Research limitations/implications This research is only limited to the Dhaka Division. Originality/value This paper concludes by noting that public awareness on seismic-risk perception and mitigation is poor, and their knowledge on basic theory and emergency response must be improved.

Parallel finite-element method using domain decomposition and Parareal for transient motor starting analysis

2019 ◽  
Vol 38 (5) ◽  
pp. 1507-1520 ◽  
Author(s):  
Yasuhito Takahashi ◽  
Koji Fujiwara ◽  
Takeshi Iwashita ◽  
Hiroshi Nakashima
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Parallel Computing ◽  
Domain Decomposition ◽  
Parallel Computation ◽  
Domain Decomposition Method ◽  
Space Time ◽  
Content Type ◽  
Parallel Performance ◽  
Element Method

Purpose This paper aims to propose a parallel-in-space-time finite-element method (FEM) for transient motor starting analyses. Although the domain decomposition method (DDM) is suitable for solving large-scale problems and the parallel-in-time (PinT) integration method such as Parareal and time domain parallel FEM (TDPFEM) is effective for problems with a large number of time steps, their parallel performances get saturated as the number of processes increases. To overcome the difficulty, the hybrid approach in which both the DDM and PinT integration methods are used is investigated in a highly parallel computing environment. Design/methodology/approach First, the parallel performances of the DDM, Parareal and TDPFEM were compared because the scalability of these methods in highly parallel computation has not been deeply discussed. Then, the combination of the DDM and Parareal was investigated as a parallel-in-space-time FEM. The effectiveness of the developed method was demonstrated in transient starting analyses of induction motors. Findings The combination of Parareal with the DDM can improve the parallel performance in the case where the parallel performance of the DDM, TDPFEM or Parareal is saturated in highly parallel computation. In the case where the number of unknowns is large and the number of available processes is limited, the use of DDM is the most effective from the standpoint of computational cost. Originality/value This paper newly develops the parallel-in-space-time FEM and demonstrates its effectiveness in nonlinear magnetoquasistatic field analyses of electric machines. This finding is significantly important because a new direction of parallel computing techniques and great potential for its further development are clarified.

Curbing electronic shopper perceived opportunism and encouraging trust

2017 ◽  
Vol 117 (10) ◽  
pp. 2210-2226 ◽  
Author(s):  
Sonia San-Martín ◽  
Nadia Jimenez
Keyword(s):  
Information Asymmetry ◽  
Structural Equation ◽  
Design Methodology ◽  
External Quality ◽  
Content Type ◽  
Theoretical Approaches ◽  
Quality Signals ◽  
The Impact ◽  
Relevant Factors ◽  
Analyze Data

Purpose Consumers can face a situation of information asymmetry in electronic shopping (ES). The purpose of this paper to examine the relationships between: relational variables such as satisfaction, trust and perceived opportunism; and website cues (cognitive signals such as security and personalization, and experiential signals, such as design and entertainment). Design/methodology/approach The paper opted for the structural equation methodology to analyze data collected from 447 Spanish e-shoppers. Findings Results show different factors that relate to satisfaction, trust and perceived opportunism in ES. Satisfactory experience with ES and entertainment emerge as the most relevant factors to achieve trust and prevent perceived opportunism in e-commerce. Originality/value The five contributions of this study are: the introduction of variables from several theoretical approaches to the study of an agency problem in e-commerce; the study of different ways to gain buyer trust and reduce perceived opportunism in an electronic shopper-vendor relationship; the application of signaling theory as part of the process of helping the principal (e-shopper) to solve their shopping problem in a context of information asymmetry; the analysis of the impact of external cues from e-vendor/site, which allows for a comparison between internal experiences and external quality signals; and the study of entertainment as an important hedonic variable in order to have satisfied and confident e-shoppers.

It’s just not fair: exploring the effects of firm customization on unfairness perceptions, trust and loyalty

2014 ◽  
Vol 28 (6) ◽  
pp. 484-497 ◽  
Author(s):  
Bang Nguyen ◽  
Philipp “Phil” Klaus ◽  
Lyndon Simkin
Keyword(s):  
Conceptual Model ◽  
Customer Loyalty ◽  
Linear Regression Analysis ◽  
Perceived Fairness ◽  
Content Type ◽  
Negative Perceptions ◽  
Loyalty Intentions ◽  
And Behavior ◽  
Development And Validation

Purpose – The purpose of this study is to (a) develop a conceptual framework exploring the relationships between perceived negative firm customization, unfairness perceptions, and customer loyalty intentions, and (b) investigate the moderating effects of trust in these relationships. The study explores how customizing offers to match customers’ individual needs and how treating customers differentially provoke unfairness perceptions among those not being considered most important. While the literature discusses unfairness perceptions of pricing, promotion, and service, less is known about unfairness in customization practices. Design/methodology/approach – Using a survey approach, 443 completed questionnaires we collected. Following validation of our item measures, a hierarchical linear regression analysis was conducted to test the conceptual model and hypothesized linkages between our constructs. Findings – The results demonstrate that customers’ negative perceptions of customization increase their unfairness perceptions. Unfairness perceptions drastically reduce customer loyalty intentions with trust acting as a significant moderator. Trust increases loyalty intentions even when unfairness perceptions are present. Our findings provide a foundation for understanding how firms may improve their perceived fairness. This increase in perceived fairness creates positive attributions, reduces negative customer experience perceptions and increases loyalty intentions. Originality/value – Key contribution is the development and validation of a conceptual model explaining the linkages between firm customization and unfairness perceptions, firm customization and customer loyalty intentions and the moderating role of trust between these relationships. This study extends the understanding of how customization practices impact unfairness perceptions and, subsequently, influence consumers’ perceptions, intentions and behavior.

Health care as a worldwide concern. Insights on the Italian and Indian health care systems and PPPs from a VSA perspective

2014 ◽  
Vol 9 (2) ◽  
pp. 198-220 ◽  
Author(s):  
Marialuisa Saviano ◽  
Ratri Parida ◽  
Francesco Caputo ◽  
Saroj Kumar Datta
Keyword(s):  
Health Care ◽  
Systems Approach ◽  
Health Care Systems ◽  
Theoretical Perspective ◽  
Service Systems ◽  
Potential Contribution ◽  
Care Needs ◽  
Content Type ◽  
Indian Health ◽  
Theoretical Approaches

Purpose – Health is a fundamental populations’ need and an integral part of the socio-economic development of a country. However, it is required to explain the growing role of the private sectors in addressing various health care needs. The purpose of this paper is to analyse potential contribution, criticalities and conditions of success of public-private partnership (PPP) as a strategy to face the complexity of nationally relevant Italian and Indian service systems. Design/methodology/approach – The methodology is built upon the basis of the viable systems approach (VSA) integrated with the fundamental interpretative elements of service science and service-dominant logic to contextualize interpretation to the management of service systems benefitting from recent advances in these research fields. Findings – A VSA-based general framework of reference is built that is useful for analysing any relational context in which different aims and expectations need to be harmonized to make the collaboration effective. On the basis of this framework, first insights on Italian and Indian health care PPPs are proposed, highlighting key elements of analysis and criticalities that may challenge a positive conclusion on health care PPPs. Practical implications – The implications of the study are both theoretical and practical. From a theoretical perspective, the study contributes to the scholarly understanding of complex health care system in Italy as well as in India with particular reference to the public-private collaboration phenomenon. It also suggests theoretical approaches in the form of a generic VSA-based framework as applicable. From a practical perspective, the study stimulates managers to a critical reflection about current health care management approaches which are reflected in the adoption of PPPs solutions. Originality/value – The paper discusses relevant worldwide decision-making challenges, such as the equality in the populations’ access to health service, suggesting managers the way to create conditions of consonance among the diverse stakeholders for a successful health care PPPs.

CoboChild: a blended mobile game-based learning service for children in museum contexts

2018 ◽  
Vol 52 (3) ◽  
pp. 294-312 ◽  
Author(s):  
Tien-Yu Hsu ◽  
HsinYi Liang ◽  
Chuang-Kai Chiou ◽  
Judy C.R. Tseng
Keyword(s):  
Learning Environment ◽  
Physical Space ◽  
Influential Factors ◽  
Game Based Learning ◽  
Museum Learning ◽  
Content Type ◽  
Mobile Game ◽  
Children’S Learning ◽  
Child Centered ◽  
Children's Learning

Purpose The purpose of this paper is to develop a blended mobile game-based learning service called CoboChild Mobile Exploration Service (hereinafter CoboChild) to support children’s learning in an environment blending virtual game worlds and a museum’s physical space. The contextual model of learning (CML) was applied to consider the related influential factors affecting museum learning and to promote children’s continuous learning and revisit motivations. Design/methodology/approach CoboChild provides a thematic game-based learning environment to facilitate children’s interactions with exhibits and other visitors. A practical system has been implemented in the National Museum of Natural Science (NMNS), Taiwan. A questionnaire was used to examine whether CoboChild can effectively fulfill the CML and to evaluate the impacts on museum learning. Findings CoboChild effectively fulfilled the CML to facilitate children’s interactive experiences and re-visit motivations in the blended mobile game-based learning environment. Most children described the system as providing fruitful playfulness while improving their interpretations of exhibitions and learning experiences. Practical implications CoboChild considers the related contextual influences on the effective support of children’s learning in a museum, and builds a child-centered museum learning environment with highly integrated blended learning resources for children. CoboChild has been successfully operating in the NMNS since 2011. Originality/value This study developed a blended mobile game-based learning service to effectively support children’s learning in museum contexts. The related issues are shown to improve the design of blended museum learning services. This innovative approach can be applied to the design of other child-centered services for engaging children’s interactive experiences in museums.

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