693 research outputs found

    A Path Analysis of the Mediating Role of Flood Risk Perceptions

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    The purpose of this research is to examine the multiple relationships that explain household adaptive behaviors, and if (and how) risk perceptions play a mediating role in these relationships. Given the shift in transferring risks from flood risk governance structures to households, there is a renewed interest in promoting private adaptive behavior amongst households that are vulnerable to flood impacts. While the literature purports the claim that flood risk perceptions rarely account for the variance explained in statistically modeling for household adaptive behaviors, this study will analyze an integrated conceptual framework that explores the mediating role of risk perceptions. The population for this quantitative study is individual households in Portsmouth, Virginia. The integrated conceptual framework considers the assumptions of Protection Motivation Theory and the Psychometric Paradigm. The conceptual framework will be analyzed using a several structural equation models to test the hypothesized causal effects of various relationships, and mediated effects of risk perception in explaining household adaptive behaviors. Findings from this study will contribute to practitioners’ understanding of the role of risk perception in flood risk management to better transfer risk to households and promote adaptive behavior. This study also builds on the theoretical knowledge of how risk perceptions explain adaptive behaviors in flood contexts.https://digitalcommons.odu.edu/business_strome/1000/thumbnail.jp

    Performance Analysis of Security Protocols

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    Security is critical to a wide range of applications and services. Numerous security mechanisms and protocols have been developed and are widely used with today’s Internet. These protocols, which provide secrecy, authentication, and integrity control, are essential to protecting electronic information. There are many types of security protocols and mechanisms, such as symmetric key algorithms, asymmetric key algorithms, message digests, digital certificates, and secure socket layer (SSL) communication. Symmetric and asymmetric key algorithms provide secrecy. Message digests are used for authentication. SSL communication provides a secure connection between two sockets. The purpose of this graduate project was to do performance analysis on various security protocols. These are performance comparisons of symmetric key algorithms DES (Data Encryption Standard), 3DES (Triple DES), AES (Advanced Encryption Standard), and RC4; of public-private key algorithms RSA and ElGamal; of digital certificates using message digests SHA1 (Secure Hash Algorithm) and MD5; and of SSL (Secure Sockets Layer) communication using security algorithms 3DES with SHA1 and RC4 with MD5

    Contextualizing Performance of Coordinated Care Network of Veteran Services in Virginia

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    Coordinated care network is an approach to human service delivery that is recognized to improve client outcomes at a reduced cost. However, general mixed findings on the effectiveness of coordinated care networks warrant research contextualization. This article seeks to discover factors influencing the performance of a coordinated care network delivering social services to veterans and their families. The study provides a contextual analysis of a coordinated care network launched in 2016 in southeastern Virginia for two samples of 1,512 and 375 veterans and their families. Results of the regression analyses indicate that initial progress has been made both in efficiency measured as the amount of days a client’s case is open and effectiveness measured as the recorded outcome of a client’s case. However, performance was affected by both client’s characteristics and types of services requested. Therefore, performance was not uniform across the network of providers. Further, indicators could be enhanced to better capture areas of the network needing improvement. Future research may consider adding performance measures and track it over time and across contextual attributes to confirm the effectiveness and efficiency performance of a coordinated care network

    Enhancing awareness of STIs and cervical cancer among husbands in an urban slum of Mumbai, India: a comparative study focusing on General, OBC and SC/ST/NT population

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    Background: Globally, cervical cancer is one of the most common cancers among women, 80 percent of cervical cancer cases present with an advanced stage of the disease when cure is impossible.  This may be due to lack of awareness and knowledge, and lack of access to proper treatment including screening facility. Involvement of husband for understanding and supporting the wife may be more effective in reproductive health related matters.Methods: An intervention study was undertaken in an urban slum of Mumbai with the objectives to investigate the awareness, knowledge and perceptions about STIs and cervical cancer and to identify programme strategies contributing to effective participation of husbands in three different categories. Baseline data was obtained from 1020   married men followed by interventions for 18 months and endline data was collected from 1013 married men to evaluate the impact of intervention. Descriptive statistics and Chi-square test was used for data analysis.Results: The results indicate significant increase in awareness about STIs, cervical cancer and Pap smear with low awareness about symptoms, abnormal discharge from vagina and abnormal vaginal bleeding in all the three groups.Conclusions: Study concludes that intervention strategy adopted at community as well as clinic level can play better role as a source of information of STIs and cervical cancer. Similar changes observed in all three categories suggest, programmes need to focus on general population rather than specific categories in a metropolitan city like Mumbai as population in urban slums of Mumbai is ethnically mixed in nature.

    Hampton Roads Residents’ Preferences for Dune and Beach Management

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    The management of dunes and beaches in Hampton Roads is critical to the region’s tourism industry and to provide protection from storms and flooding. During the summer of 2017, we surveyed over 675 residents of Hampton Roads to gauge their preferences for the management of dunes and beaches. An overwhelming majority felt that all taxpayers should have a say in maintenance practices along with government regulations to assist with the protection of beaches and dunes. Residents leaned towards localized input from citizens as preferred methods of management and understood the importance their tax dollars play in funding those methods. While residents supported the maintenance of dunes and beaches, there is a split on the appropriate methods to be used. In addition, the majority of participants were supportive of new taxes to fund beach protection

    CommunityAI: Towards Community-based Federated Learning

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    Federated Learning (FL) has emerged as a promising paradigm to train machine learning models collaboratively while preserving data privacy. However, its widespread adoption faces several challenges, including scalability, heterogeneous data and devices, resource constraints, and security concerns. Despite its promise, FL has not been specifically adapted for community domains, primarily due to the wide-ranging differences in data types and context, devices and operational conditions, environmental factors, and stakeholders. In response to these challenges, we present a novel framework for Community-based Federated Learning called CommunityAI. CommunityAI enables participants to be organized into communities based on their shared interests, expertise, or data characteristics. Community participants collectively contribute to training and refining learning models while maintaining data and participant privacy within their respective groups. Within this paper, we discuss the conceptual architecture, system requirements, processes, and future challenges that must be solved. Finally, our goal within this paper is to present our vision regarding enabling a collaborative learning process within various communities

    CHARM, a gender equity and family planning intervention for men and couples in rural India: protocol for the cluster randomized controlled trial evaluation.

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    BackgroundGlobally, 41% of all pregnancies are unintended, increasing risk for unsafe abortion, miscarriage and maternal and child morbidities and mortality. One in four pregnancies in India (3.3 million pregnancies, annually) are unintended; 2/3 of these occur in the context of no modern contraceptive use. In addition, no contraceptive use until desired number and sex composition of children is achieved remains a norm in India. Research shows that globally and in India, the youngest and most newly married wives are least likely to use contraception and most likely to report husband's exclusive family planning decision-making control, suggesting that male engagement and family planning support is important for this group. Thus, the Counseling Husbands to Achieve Reproductive Health and Marital Equity (CHARM) intervention was developed in recognition of the need for more male engagement family planning models that include gender equity counseling and focus on spacing contraception use in rural India.Methods/designFor this study, a multi-session intervention delivered to men but inclusive of their wives was developed and evaluated as a two-armed cluster randomized controlled design study conducted across 50 mapped clusters in rural Maharashtra, India. Eligible rural young husbands and their wives (N = 1081) participated in a three session gender-equity focused family planning program delivered to the men (Sessions 1 and 2) and their wives (Session 3) by village health providers in rural India. Survey assessments were conducted at baseline and 9&18 month follow-ups with eligible men and their wives, and pregnancy tests were obtained from wives at baseline and 18-month follow-up. Additional in-depth understanding of how intervention impact occurred was assessed via in-depth interviews at 18 month follow-up with VHPs and a subsample of couples (n = 50, 2 couples per intervention cluster). Process evaluation was conducted to collect feedback from husbands, wives, and VHPs on program quality and to ascertain whether program elements were implemented according to curriculum protocols. Fidelity to intervention protocol was assessed via review of clinical records.DiscussionAll study procedures were completed in February 2015. Findings from this work offer important contributions to the growing field of male engagement in family planning, globally.Trial registrationClinicalTrial.gov, NCT01593943
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