Opportunistic Networks Research Articles

Changing content plan structure of companies operating in Russia and represented on VK

The article identifies six main types of content: communication, entertainment, situational, news, sales, and reputation. The study analyzes changes in content plan structure of companies providing various categories of consumer goods in 2022. The reviewed companies operate in Russia, have official accounts VK and actively interact with users. These companies’ activity on VK has been reviewed and analyzed and trends in various types of content placement considered. The regularities in companies’ content plan change and types of prevailing content for 2022 have been highlighted. The article concludes that Russian companies are facing a serious challenge related to the vacated market niches due to a number of foreign brands market withdrawal. Companies that change their content plan in the direction of active interaction with users and effective use of available social network opportunities will have a clear advantage over those ones that continue to focus their efforts on Western resources, access to which is significantly hindered, and advertising placement and use of paid promotion tools are illegal.

Food Networks and Agroecology in the Province of Trento – Italy

As the hegemonic food system is unsustainable in socio-environmental terms, over the last few decades, the search for new forms of food supply has fostered alternative food networks (AFNs). Civic Food Networks (CFNs) are a particular subset of AFNs that strongly emphasise the citizenship of the actors involved, including farmers, and their active engagement in the agrifood system. Our objective was to identify CFNs within the studied territory, evaluate farmers’ participation, and answer if the CFNs are contributing to the promotion of agroecology. The research comprises a case study in the province of Trento (Italy). We used direct and participant observation, database consulting, document analysis, and interviews with key players and organic farmers linked to short food supply chains (SFSCs). We evaluated the contributions to the promotion of agroecology through ecological and socioeconomic elements: biodiversity, efficient use of resources, and self-produced food. We have identified the presence of initiatives that act by promoting discussion spaces and stimulating the construction of experiences of an SFSC. Those initiatives have provided space for the formation of new networks and created opportunities for new relationships, production, and consumption networks. However, organisational structures that favour monocultural systems and commercialisation in long chains prevail in the territory and hinder these innovations. Though the collective organisations of farmers, outside the formal cooperatives, are still developing, farmers are often individualised and with little active participation in decision-making processes within the territory. This study identified an embryonic CFN that showed positive indicators of agroecology for all the analysed aspects. However, the differences were not as significant when compared to other farmers who also participated in SFSCs. This research reinforces that there is a there is promotion of agroecoloy, from the maintenance and encouragement of short food supply chains that are proponents of agrobiodiversity, to the maintenance of family farmers’ livelihoods. CFNs have the potential to empower rural actors by providing them with greater participation and autonomy in the agrifood system. However, strengthening these networks remains a challenge, as it requires stimulating social organisation and fostering the integration of various actors within the territory, including rural stakeholders.

Understanding the difference, makes the difference: perceptions of Black and Minoritised ethnic occupational therapists on mentoring

IntroductionBlack and Minoritised Ethnicity (BME) occupational therapists face lower career progression opportunities and mentoring is one possible intervention that may offer support. BME persons may have different expectations and experiences from their mentor, and research exploring their perceptions of mentoring is important. In Occupational Therapy there is a growing awareness of the need to be true to the values of social justice. The aim of this research is to learn about BME occupational therapists’ experiences and perceptions of mentoring for career progression.MethodsFour online focus groups involving 19 participants from the UK were held, discussions were facilitated by researchers using a topic guide. Participants responses were analysed, and codes were brought together to create Themes including career progression and role models, mentoring relationship, similarity with the mentor and outcomes from mentoring.ResultsThe study highlighted that trust is integral to effective mentoring relationships and BME occupational therapists want mentors who they can trust with their experiences and stories. Compatibility between mentors and mentees in terms of personality, values, and working styles is crucial for effective mentoring relationships. Providing opportunities for networking, acknowledging good work and giving permission were all seen as outcomes from good mentoring. The absence of BME role models and ingroup bias were also reported as issues to be addressed.ConclusionThis study explores the perception of mentorship as a mechanism for career advancement in occupational therapists from BME backgrounds, with these results transferable to other health and care professional groups. We recommend the creation of a mentoring charter for BME healthcare workers in the United Kingdom to ensure that those from BME backgrounds feel supported, mentored, and provided with equitable access to resources, including adequate mentoring and networking opportunities.

SOLUSI ALTERNATIF PENYAMPAIAN INFORMASI DENGAN TOLERANSI WAKTU TUNDA UNTUK PENGGUNA LAYANAN KOMUNIKASI DATA PADA VEHICULAR NETWORK

Data demand from personal mobile devices over cellular networks is rapidly increasing. For time-delay tolerant data, the use of paid technology is inefficient. As an alternative for time-delay tolerant data delivery, opportunistic networks are emerging as an effective infrastructure-less communication model. Before it can be used as an alternative solution, it is necessary to analyze the performance of using opportunistic networks, especially the basic routing patterns used. This research analyzes the performance of routing patterns in opportunistic networks by utilizing inter-vehicle networks as mobile nodes in Denpasar City. Two basic routing patterns, namely epidemic and spray and wait, are simulated using The ONE Simulator into two scenarios including a scenario of increasing the average vehicle and a scenario of increasing the buffer size. The simulation results show that in the inter-vehicle network utilization, epidemic routing pattern is superior to spray and wait in terms of delivery probability and average latency, but when assessing in terms of overhead ratio, spray and wait routing pattern can provide lower results. This shows that the epidemic routing pattern is suitable for systems that do not care about high resource utilization.

Energy efficient resource allocation algorithms combining PSO with FLC and Taguchi method in hybrid opportunistic networks

In order to reduce power consumption and delay time when mobile devices use wireless networks, this paper proposes dividing groups of mobile devices into clusters, and proposes two cluster architectures, which are dual-radio opportunistic networking for energy efficiency combining particle swarm optimization with fuzzy logic control and Taguchi by 2-hop of priority weighted round robin (DRONEE-PFT2-PWRR) and dual-radio opportunistic networking for energy efficiency combining particle swarm optimization with fuzzy logic control and Taguchi by multi-hop of priority weighted rate control (DRONEE-PFTM-PWRC). Furthermore, our proposed DRONEE-PFT2-PWRR algorithm increases cluster coverage using 2-hop and our proposed DRONEE-PFTM-PWRC algorithm improves power consumption of the system by multi-hop cluster architecture. Internal cluster communication uses Wi-Fi transmission packets, which can reduce energy consumption when a mobile device communicates with a long term evolution advanced (LTE-A) base station, and reduce interference on signals between mobile devices. In the selection of cluster heads, this paper uses particle swarm optimization (PSO) to find the best cluster head position, and the PSO fitness parameter value is adjusted using fuzzy logic control (FLC) combined with the Taguchi method. Priority weighted round robin (PWRR) architecture is proposed for LTE-A base station and cluster network resource allocation, and quality of service is introduced to give priority weight to packets according to data type. Furthermore, priority weighted rate control (PWRC) is proposed. This method determines whether the network resources of the base station meet the demands of the cluster, and then assigns weights according to the requirements of the cluster and its priorities, and finally allocates network resources according to those weights. This increases the uplink throughput of network resource allocation. Simulation results show that our proposed methods significantly outperform the DRONEE-weighted (DRONEE-W) algorithm method in terms of power consumption, network throughput, and transmission delay time.

Efficient Data Transfer by Evaluating Closeness Centrality for Dynamic Social Complex Network-Inspired Routing

Social Complex Networks in communication networks are pivotal for comprehending the impact of human-like interactions on information flow and communication efficiency. These networks replicate social behavior patterns in the digital realm by modeling device interactions, considering friendship, influence, and information-sharing frequency. A key challenge in communication networks is their dynamic topologies, driven by dynamic user behaviors, fluctuating traffic patterns, and scalability needs. Analyzing these changes is essential for optimizing routing and enhancing the user experience. This paper introduces a network model tailored for Opportunistic Networks, characterized by intermittent device connections and disconnections, resulting in sporadic connectivity. The model analyzes node behavior, extracts vital properties, and ranks nodes by influence. Furthermore, it explores the evolution of node connections over time, gaining insights into changing roles and their impact on data exchange. Real-world datasets validate the model’s effectiveness. Applying it enables the development of refined routing protocols based on dynamic influence rankings. This approach fosters more efficient, adaptive communication systems that dynamically respond to evolving network conditions and user behaviors.

Factors influencing pharmacists and pharmaceutical scientists’ membership in professional organisations: an international survey

BackgroundProfessional organisations exist as international or national organisations, with each country establishing at least one national professional association. There remains a knowledge gap about factors that influence professional organisational involvement of pharmacists and pharmaceutical scientists. This study aims to explore the motivators and barriers of pharmacy professionals holding organisation membership from a global perspective.MethodsAn online questionnaire was developed and disseminated between May and July 2021. The survey was open to all pharmacists and pharmaceutical scientists. The survey consisted of four sections; demographic information, questions about professional organisations, about the International Pharmaceutical Federation (FIP) and its impact on the members. Data were analysed descriptively.ResultsA total of 1033 complete survey responses were received and included in the analysis. Of all respondents, 761 (73.7%) respondents were current members of a professional organisation and 272 (26.3%) were not members of any professional organisation. Overall, findings demonstrated networking, education, training and professional development opportunities as the main interests and anticipated activities, while the lack of clarity or need to join organisation, time, and financial constraints as the main barriers of pharmacy professionals holding membership. The majority of FIP members are satisfied with current FIP activities, and anticipate further networking opportunities, educational resources and grants made available to members.ConclusionsUnderstanding the perceptions and needs, as well as factors that influence engagement of pharmacists and pharmaceutical scientists is the key to enhancing membership. Professional organisations are highly encouraged to strengthen and target activities according to the identified motivators and barriers.

What’s next for computational systems biology?

Largely unknown just a few decades ago, computational systems biology is now a central methodology for biological and medical research. This amazing ascent raises the question of what the community should do next. The article outlines our personal vision for the future of computational systems biology, suggesting the need to address both mindsets and methodologies. We present this vision by focusing on current and anticipated research goals, the development of strong computational tools, likely prominent applications, education of the next-generation of scientists, and outreach to the public. In our opinion, two classes of broad research goals have emerged in recent years and will guide future efforts. The first goal targets computational models of increasing size and complexity, aimed at solving emerging health-related challenges, such as realistic whole-cell and organ models, disease simulators and digital twins, in silico clinical trials, and clinically translational applications in the context of therapeutic drug development. Such large models will also lead us toward solutions to pressing issues in agriculture and environmental sustainability, including sufficient food availability and life in changing habitats. The second goal is a deep understanding of the essence of system designs and strategies with which nature solves problems. This understanding will help us explain observed biological structures and guide forays into synthetic biological systems. Regarding effective methodologies, we suggest efforts toward automated data pipelines from raw biomedical data all the way to spatiotemporal mechanistic model. These will be supported by dynamic methods of statistics, machine learning, artificial intelligence and streamlined strategies of dynamic model design, striking a fine balance between modeling realistic complexity and abstracted simplicity. Finally, we suggest the need for a concerted, community-wide emphasis on effective education in systems biology, implemented as a combination of formal instruction and hands-on mentoring. The educational efforts should furthermore be extended toward the public through books, blogs, social media, and interactive networking opportunities, with the ultimate goal of training in state-of-the-art technology while recapturing the lost art of synthesis.

Small CBPR Grants Program: An Innovative Model to Build Sustainable Academic-Community Partnerships.

Community-based participatory research (CBPR) is an effective approach for addressing health disparities by integrating diverse knowledge and expertise from both academic and community partners throughout the research process. However, more is needed to invest in the foundational infrastructure and resources that are necessary for building and maintaining lasting trusting research partnerships and supporting them to generate impactful CBPR-based research knowledge and solutions. Small CBPR Grants Program is a CBPR-seed-funding program that may be particularly helpful to minority-serving institutions' and universities' goal to invest in genuine community-engaged participatory research. Between 2016 and 2019, the Morgan State University Prevention Sciences Research Center, in collaboration with other community and academic organizations, provided 14 small CBPR awards to new partnerships, and evaluated the success and challenges of the program over a period of three years. To achieve our goal, technical support and training were provided to these partnerships to help with their growth and success. The expected outcomes included trusting relationships and equitable partnerships, as well as publications, presentations, and new proposals and awards to work on mutually identified issues. The program's resulted in continued partnerships beyond the program (in most cases), a founded CBPR Center namely ASCEND, and several secured additional fundings. Keys to the program's success were supporting the formation of research partnerships through networking opportunities and information sessions, as well as providing small grants to incentivize the development of innovative concepts and projects. A learning network and local support group were also created to enhance productivity and the overall impact of each project.

A Tale of Two: How Network Agency Influences Network Creation for Start-ups

There is an existing consensus that networks positively impact start-ups. New ventures gain access to market information, funding, emotional support and improved legitimacy from networking. However, existing efforts at articulating network creation and impact on new ventures are skewed due to a strong focus on structural properties. Although these properties contribute to understanding network creation and impact, they often ignore the individual who is either a network beneficiary or broker. This study examines the role of the network actor’s agency in entrepreneurial network creation. Understanding agency is critical for explaining how individuals make sense of network opportunities available within their context. Network agency reveals how entrepreneurial networks are created, what influences actor motives and behaviour, and the brokerage methods adopted to meet these motives. This study explores network agency in two contexts: the interventionist incubator context and the location-induced cluster context. The Lagos Technology Ecosystem comprised of different incubator models and cluster is examined. 31 semi-structured interviews with start-ups from both contexts were conducted to get a nuanced view of how the context influences entrepreneurs' network agency. This paper reveals that network motives like personality, reciprocity, and legitimacy as the main motives for tenant firms to engage in network activities. Conversely, cluster firms listed trust, and the need to access knowledge, information and opportunity as key reasons for engaging in network action. In both contexts, direct and indirect brokerage is utilised to meet the motives triggered. However, the dynamics and nature of these brokerage methods are different across the two contexts. Tenant firms demonstrate a tertius Iugnes behaviour, while cluster firms demonstrate separation behaviour.

Perceptions of invited seminar speakers and seminar organizers across university biology departments in virtual formats

Research seminars are a staple within biology and other science, technology, engineering, and mathematics (STEM) departments across academic institutions. During the COVID-19 pandemic, academic institutions across the U.S. had to rapidly transition courses, research programs, and other events from in-person to virtual environments—and departmental research seminars were no exception. We explored the perceptions of biology department seminar speakers and organizers regarding the benefits and challenges they experienced in the virtual format. We asked three primary research questions: (1) What challenges and benefits do invited seminar speakers in biology departments perceive regarding presenting seminars in the virtual environment? (2) What challenges and benefits do organizers of biology department seminars perceive regarding organizing seminars in the virtual environment? (3) How did biology department seminars change during the transition from an in-person to virtual format? In total, 39 seminar organizers and 90 seminar speakers completed surveys focused on their perceptions of virtual seminars. Using descriptive statistics and thematic analysis, we found that numerous benefits and challenges are perceived by seminar speakers and organizers regarding virtual seminars. Speakers and organizers perceived similar benefits of virtual seminars including accessibility and diversity, while perceived challenges included the loss of professional networking opportunities and academic community. There was overwhelming consensus from speakers and organizers alike that virtual departmental seminars are professionally and academically valuable. However, while speakers’ chief motivator was in furthering their own networks, research collaborations, and research visibility, organizers primarily valued their own students’ or trainees’ career development as well as their own departmental community. Together, these findings demonstrate the potential benefits of continuing virtual seminars outside of the context of the COVID-19 pandemic from an equity perspective while also highlighting issues that must be addressed by organizers and attendees to ensure seminars retain their value.

THE INFLUENCE OF HIGHER EDUCATION CURRICULUM ON ENTREPRENEURSHIP EDUCATION

The contribution of entrepreneurship education to innovation, economic expansion, and job creation has received a lot of attention recently. Institutions of higher learning are essential in forming the next generation of business leaders and preparing them for the difficulties of a market that is undergoing fast change. The goal of this study article is to examine how the higher education curriculum affects entrepreneurship instruction and how it affects students' acquisition of entrepreneurial knowledge, success, and attitudes. The study uses a mixed-methodologies approach, gathering data using both qualitative and quantitative methods. To learn more about the planning and delivery of entrepreneurship curricula in higher education institutions, educators, entrepreneurship program directors, and entrepreneurs will be the subjects of interviews and focus groups during the qualitative phase. To gauge undergraduate and graduate students' impressions of the curriculum's efficacy in fostering entrepreneurial competencies, the quantitative phase incorporates a survey that is given to those students who are enrolled in entrepreneurship programs. According to a preliminary literature review, it is anticipated that several factors, such as the harmony between theory and practice, the inclusion of experiential learning opportunities, the cooperation with industry partners, and the use of real-life case studies, will determine how effective the entrepreneurship curriculum is. The study will look at how much of these elements are included in current entrepreneurship curriculum and how they affect students' entrepreneurial performance. In addition, this study will investigate the connection between successful entrepreneurship education and entrepreneurship. The influence of entrepreneurship education on students' aspirations to launch their own companies, their capacity to spot and seize chances, and their general entrepreneurial performance will be evaluated. The study will also look at whether certain curriculum elements, such networking opportunities, incubators, and mentorship programs, have a big impact on entrepreneurial outcomes. The results of this study will advance knowledge of how higher education institutions may successfully create and deliver entrepreneurship curricula to advance students' entrepreneurial abilities and mindset. The study will provide information on the crucial components and pedagogical strategies that can be incorporated into the curriculum to encourage innovation, creativity, taking risks, and recognizing opportunities. The results of this study have important ramifications. Policymakers, educators, and curriculum developers will benefit from knowing how higher education curricula affect entrepreneurship education when creating and improving entrepreneurial programs. Higher education institutions can better prepare students with the information, skills, and mindset required to succeed as entrepreneurs in today's competitive business world by identifying effective pedagogical approaches and curriculum elements.

Uranium mining – challenges and lessons to learn for nuclear disposal in view of participation and safety

Abstract. Uranium mining and milling is where the nuclear fuel chain starts. Nevertheless, it is the most disregarded part of this chain when thinking about resilience and safety, both in academic debates and in the process of resource extraction. This workshop aims at addressing this gap in addition to improving our understanding of the lessons we can learn for nuclear waste disposal. Uranium mining and milling is challenging when considering safety, from the first day a mine is in operation to the final day of land rehabilitation. During the operation of the mine and mill, the health of the miners is at risk and so is the well-being of the population living in the surrounding area of the mine and the ore-processing plant. Moreover, environmental issues such as pollution pose a risk during the entire lifetime of a mine. The remnants of mining activities can be regarded as long-term liabilities, since they must be monitored for many generations. Uranium mining and milling facilities are often situated on the land of indigenous people. Their rights to information and their participation in the decision-making processes regarding the mining operations, in addition to being informed about basic health outcomes, were and frequently continue to not be given, leading to injustices by mining companies and governmental authorities. Participation, however, is crucial for positive societal outcomes, such as avoiding the deepening of structural inequalities and the development of violent conflict, and for building trust – and thus also for security. This is not only true for operations at the beginning of the nuclear fuel chain but also for actions taken at the end (i.e., during the quest for the safest possible disposal site for nuclear waste). Based on insights from the processes of uranium extraction, we can draw conclusions about the site selection process of a final repository, specifically regarding licensing, operation and land rehabilitation processes. Bearing this in mind, it is worth having a detailed look at the beginning of the nuclear fuel chain as we move forward to resolve the issues we will face during the final stage of nuclear waste disposal. Learning in this context means looking closely at the processes during the licensing, operation, closure and rehabilitation of uranium mines and mills and drawing conclusions about the site selection process, in particular with respect to inclusion of the individual stakeholders and safety concepts. As a result, we can develop recommendations for the ongoing revision of the search process for a final repository for radioactive waste. Therefore, safety and participation issues are the focus of the uranium mining and milling workshop. The workshop will gather academics and practitioners from different fields in a transdisciplinary setting. We plan about five short inputs (up to 10 min each) based on some visualizations (slides, posters or similar), followed by a World Café related to the input talks and a concluding plenary discussion. The entire workshop will last about 2.5 h. The workshop is topped off by an excursion to the Wismut facilities in Ronneburg (Thüringen/Thuringia, Germany) on the Saturday after the conference. The field trip will be guided by Wismut GmbH, the Church Environmental Group Ronneburg and the local Miners' Association. This workshop will enhance the transdisciplinary capabilities of the participants with respect to the logic and externalities of uranium extraction, in addition to providing opportunities for exchange and networking. We aim to compose a publication format for the Safety of Nuclear Waste Disposal platform, based on the contributions of all workshop participants.

A Social Network Theory-Inspired Study of Social Work Intervention in the Vendor Economy

This investigation concentrates on the opportunities and challenges confronted by social work intervention in the hawker economy. Concerning research background, small traders, who represent a crucial section of the hawker economy, encounter volatility in the economic milieu and insufficient social assistance. The study aims to comprehend the function and efficiency of social work in the area of vending in order to provide targeted policy recommendations and perspectives. To examine the feasibility of social work intervention, this study employed social network theory elaboration and a literature review. The study observed that social work intervention not only offers economic support, skills training and social networking opportunities to small traders but also enables their personal growth and social integration. Nonetheless, this study discovered resource, policy and cultural limitations that impede the effective professional intervention of social work. In summary, social work plays a crucial role in the growth of the hawker economy; nevertheless, there is an ongoing requirement to boost policy support and invest more in human and material resources to uphold development and amplify its social impact.

The Women in Cardiothoracic Anesthesiology Special Interest Group: What Can the Lessons of One Anesthesiology Affinity Group Tell Us About How to Build Impactful Professional Communities?

The Women In Cardiothoracic Anesthesiology (WICTA), a special interest group of the Society of Cardiovascular Anesthesiologists, has been highly successful in mobilizing WICTA, a historically underrepresented and marginalized group in the subspecialty, and in supporting real and meaningful change in the professional community. The experience of WICTA as a professional affinity group in impacting a professional organization to diversify, evolve, and become more responsive to a wider professional audience has important lessons for other professional organizations. This article discusses the recent history of affinity organizations in anesthesiology, the benefits they offer professional organizations, and the strategies that have been used to effectively motivate change in professional communities. These strategies include engaging a strong advisory board, identifying the need of constituents, creating additional opportunities for networking and membership, addressing gaps in professional development, and aligning goals with those of the larger national organization. WICTA is just one example of the potential opportunities that affinity groups offer to professional societies and organizations for expanding their reach, enhancing their impact on physicians in their target audience, and achieving organizational missions.

"In the back of my mind": A Longitudinal Multiple Case Study Analysis of Successful Black Women Biomedical Graduate Students Navigating Gendered Racism.

Black women in graduate school can experience stress due to blatant and subtle acts of gendered racism. However, we do not know how such stressors are navigated over time among those who successfully complete their PhDs. The current study used a Black feminist thought framework and narrative analysis to conduct a longitudinal exploration of how three successful Black women biomedical graduate students make sense of and respond to gendered racism they experienced and the coping strategies they employ as they persist. When interacting with others, the women experienced low expectations and doubts about being legitimate scientists. These experiences contributed to feelings of isolation, impacted their networking opportunities, and dampened their view of the desirability of an academic career postgraduation. Over time, their coping strategies for dealing with negative racial and gendered racial stereotypes and biases shifted from opting to "prove others wrong" or working harder, to leaning on their social networks for camaraderie and advice as well as choosing to not exert energy to form a response. Implications for mentoring and mentoring programs at the graduate level and science, technology, engineering, and mathematics programming are discussed.

An analysis of 32 orthopaedic society costs and benefits

Background: Many orthopaedic surgeons belong to specialty groups or societies at the local, state, and national levels. We sought to understand costs and benefits of orthopaedic society memberships. Methods: We collected data on the cost of membership and benefits for 32 different orthopaedic societies in 2020 and 2021 by using website information and contacting the society’s administration. We grouped benefits into distinct categories: annual conference, continuing education, educational resources, leadership opportunities, career job listings, research grants, mentorship program, resident/fellow resources, medical student resources, and journal affiliation. Results: On average, attending surgeons pay $460 and residents/fellows pay $300 for a single annual membership. However, some organizations, such as the American Academy of Orthopaedic Surgeons (AAOS), the American Orthopaedic Association (AOA), and the Hip Society have higher annual dues ($1,115, $1,100, and $1,500, respectfully). Over 20 years, a physician belonging to both the AOA and the AAOS pay $44,300 in fees at the current cost. All 32 societies offer an annual conference, continuing education credit opportunities, other educational resources, leadership opportunities, and journal affiliations. Conclusions: Membership fees vary and benefits are often difficult to assess without becoming a member. The COVID-19 pandemic has moved society activities online, decreasing opportunities for in-person networking and education, with some societies considering reduced fees. The pandemic has also strained hospital budgets resulting in loss of funds for many physicians at academic organizations that would normally be used toward membership fees. Perhaps increased opportunities for resource pooling, with group access to educational opportunities and mentorship, should be considered. Level of Evidence: Level V.

Fostering Industry Connections

Optica’s Photonic Devices Industry Summit at ficonTEC will offer companies opportunities for networking and growth.

Social mobility and geo-context aware macroscopic routing scheme for mobile opportunistic network

Mobile opportunistic networks (MONs) are deliberated as important aspect to proliferate the wireless communications. These networks pose several challenges such as network lifetime, storage capacity, and forwarding capacity. End-to-End routing schemes are considered as promising technique solution to deal with these issues. In this domain, opportunistic routing has gained huge attention because it follows the broadcasting nature of wireless communication and focus on selection of relay node for packet transmission to ensure the better quality of service (QoS) and energy efficiency. This work focuses on optimizing the next hop selection process and introduced reinforcement learning approach which considers distance, energy and link connectivity to assign the reward for different actions to identify the suitable relay node. Moreover, geo-context and social behaviour based opportunistic routing models are used to increase the reliability of next hop selection. Similarly, social model considers social profiling, social connectivity, and social interaction model to identify the relay node. The outcome of proposed approach is compared with several existing approaches such as prophet, spray and wait, and epidemic routing in terms of packet delivery, and network overhead. The relative study shows that the proposed approach achieves the average packet delivery as 47.22% and minimizes the network overhead.

Node importance Evaluation Model of Opportunistic Network Based on Improved Graph Neural Network

Node importance Evaluation Model of Opportunistic Network Based on Improved Graph Neural Network