Theory of preference modelling for communities in scale-free networks

Detecting a community structure on networks is a problem of interest in science and many other domains. Communities are special structures which may consist nodes with some common features. The identification of overlapping communities can clarify not so apparent features about relationships among the nodes of a network. A node in a community can have a membership in a community with a different degree. Here, we introduce a fuzzy based approach for overlapping community detection. A special type of fuzzy operator is used to define the membership strength for the nodes of community. Fuzzy systems and logic is a branch of mathematics which introduces many-valued logic to compute the truth value. The computed truth can have a value between 0 and 1. The preference modelling approach introduces some parameters for designing communities of particular strength. The strength of a community tells us to what degree each member of community is part of a community. As for relevance and applicability of the community detection method on different types of data and in various situations, this approach generates a possibility for the user to be able to control the overlap regions created while detecting the communities. We extend the existing methods which use local function optimization for community detection. The LFM method uses a local fitness function for a community to identify the community structures. We present a community fitness function in pliant logic form and provide mathematical proofs of its properties, then we apply the preference implication of continuous-valued logic. The preference implication is based on two important parameters $$\nu$$ ν and $$\alpha$$ α . The parameter $$\nu$$ ν of the preference-implication allows us to control the design of the communities according to our requirement of the strength of the community. The parameter $$\alpha$$ α defines the sharpness of preference implication. A smaller value of the threshold for community membership creates bigger communities and more overlapping regions. A higher value of community membership threshold creates stronger communities with nodes having more participation in the community. The threshold is controlled by $$\delta$$ δ which defines the degree of relationship of a node to a community. To balance the creation of overlap regions, stronger communities and reducing outliers we choose a third parameter $$\delta$$ δ in such a way that it controls the community strength by varying the membership threshold as community evolves over time. We test the theoretical model by conducting experiments on artificial and real scale-free networks. We test the behaviour of all the parameters on different data-sets and report the outliers found. In our experiments, we found a good relationship between $$\nu$$ ν and overlapping nodes in communities.

Bend or break: how biochemically versatile molecules enable metabolic division of labor in clonal microbial communities

In fluctuating nutrient environments, isogenic microbial cells transition into “multicellular” communities composed of phenotypically heterogeneous cells, showing functional specialization. In fungi (such as budding yeast), phenotypic heterogeneity is often described in the context of cells switching between different morphotypes (e.g., yeast to hyphae/pseudohyphae or white/opaque transitions in Candida albicans). However, more fundamental forms of metabolic heterogeneity are seen in clonal Saccharomyces cerevisiae communities growing in nutrient-limited conditions. Cells within such communities exhibit contrasting, specialized metabolic states, and are arranged in distinct, spatially organized groups. In this study, we explain how such an organization can stem from self-organizing biochemical reactions that depend on special metabolites. These metabolites exhibit plasticity in function, wherein the same metabolites are metabolized and utilized for distinct purposes by different cells. This in turn allows cell groups to function as specialized, interdependent cross-feeding systems which support distinct metabolic processes. Exemplifying a system where cells exhibit either gluconeogenic or glycolytic states, we highlight how available metabolites can drive favored biochemical pathways to produce new, limiting resources. These new resources can themselves be consumed or utilized distinctly by cells in different metabolic states. This thereby enables cell groups to sustain contrasting, even apparently impossible metabolic states with stable transcriptional and metabolic signatures for a given environment, and divide labor in order to increase community fitness or survival. We speculate on possible evolutionary implications of such metabolic specialization and division of labor in isogenic microbial communities.

Ethnographic Study of the Physical Activity of Adolescents in the Farming Culture of Ethnic Baduy

This study aims to find out the meaning of physical activity of indigenous people about the process of implementing traditionals rituals that provide references to physical education, social and cultural impacts, as well as positive impacts for daily life in the survival of baduy people. Researchers have explored the physical activity of local wisdom in Baduy indigenous people as a viewpoint or way of life of the past that can be applied to its values in the present. This research uses interactive qualitative method that is ethnographic by doing description and analysis of a community based on field research. Research informants are traditional leaders of the Baduy indigenous people and youth in Kanekes Village, Leuwidamar District, Lebak Regency, Banten Province. Data collection in this study used interview, observation, and documentation techniques. The results of this study, get the meaning of physical activity in farming culture by grouping based on the stages of farming activities of the Baduy people such as Narawas, Nyacar, Nukuh, Ngaduruk, Ngaseuk, Ngirab Sawan, Mipit, Made, Ngunjal, Ngayaran, Ngawalu, and Seba. This pattern of farming activities is not just a job but a religious obligation. Therefore, the youth of the Baduy community have good body resistance (fit), the formation of attitudes (character), and various motor activities, so that they can be a reference in physical education and community fitness.

Effects of a Community-Based Familiarization Intervention on Independent Performance of Resistance-Training Exercise Tasks by Adults With Intellectual Disability

Adults with intellectual disability (ID) have significantly lower levels of fitness compared to the general population. The study examined the effects of a multicomponent familiarization intervention, consisting of a visual activity schedule and a video-enhanced system of least-to-most prompting, both displayed via an iPad, on the acquisition of resistance-training exercise tasks by adults with ID, aged 18–44 years, in a community fitness center. Twelve participants were randomly allocated to an experimental group (EG) and 12 to an active control group (CG). ANOVA revealed EG correctly and independently performed a significantly greater number of steps of four resistance-training exercise tasks compared with CG, relative to preintervention levels (p < .01). The intervention was effective in promoting functional performance of resistance-training exercise tasks among adults with ID.

THE INFLUENCING FACTORS OF OPENING OF COLLEGE SPORTS RESOURCES IN THE BACKGROUND OF NATIONAL PUBLIC FITNESS SERVICES

ABSTRACT There are some problems such as few and old equipment in urban community sports fitness facilities, which makes it difficult for community fitness resources to continue to meet the fitness needs of community residents. The opening of university sports resources can alleviate the problem of residents' fitness difficulty to a certain extent. In order to explore the problems faced by the opening of university sports resources, this study established the analytic hierarchy process model based on the analytic hierarchy process (AHP) and Delphi law in the background of national public service of fitness, and combined with the questionnaire survey method to study the influencing factors of opening of college sports. The model modified by the Delphi method contains 6 first-level and 22 second-level influencing factors. It is found that the most important factor in the first level is the hardware factor of college sports resources, and the most important factor of the second level is the spatial layout of university sports resources. The results show that improving the hardware facilities of university sports resources, improving the management mode of sports resources, and increasing the targeted financial subsidies and tax reduction and exemption are helpful to enhance the willingness to open sports resources and improve the quality of opened sports resources. It is hoped that this study can promote the opening of college sports resources and promote the continuous improvement of the service level of sports resources.

A Comparison of App-Based Video-Modeling Interventions to Teach Physical Activity Skills to People With Autism in a Community Setting

App-based technologies that utilize video-modeling components are an area that can increase the independence of people with autism spectrum disorder (ASD) in community settings; however, less is known about their impact in facilitating acquisition of physical activity (PA) skills in inclusive community fitness sites. It is important to consider how to increase PA skills in community settings for people with ASD given the known benefits of community inclusion and exercise. This study used an adaptive alternating treatment design to explore differences in three participants’ ability to perform exercises independently in a community site when using commercial video-models (i.e., video-models available in the app) compared to custom-made video-models (i.e., developed by the researchers). Two participants performed the PA skills more independently when watching the custom-made videos while the third performed the PA skill more independently when watching the commercial video-models. All participants indicated they enjoyed using the app and videos to learn new PA skills. Limitations of the study as well as implications for future research are discussed.

Sport Development Index of Banyumas Regency

The purpose of this study is to evaluate the local government’s success in its development, especially in the field of sports from the aspect of open space availability, community participation, sport resource, and community fitness level (Sport Development Index) that an evaluative research approach is conducted in this study. The research employs both stratified random sampling and cluster sampling technique. The population basic characters used include; the differences of regional progress level, gender between male and female, age ranging from children aged 7-12 years old, adolescents aged 13-17 years old and adults aged 18-40 years old, while the basic cluster used is district and sub-district or village. The research results show that the open space index is classified in low category (0.180), human resource index in medium category (0.551), public participation index in medium category (0.572), and physical fitness index in low category (0.488). Simultaneously, the Sport Development Index of Banyumas Regency in 2010 is classified in low category (0.487).