An Efficient Patch Dissemination Strategy for Mobile Networks

Mobile phones and personal digital assistants are becoming increasingly important in our daily life since they enable us to access a large variety of ubiquitous services. Mobile networks, formed by the connection of mobile devices following some relationships among mobile users, provide good platforms for mobile virus spread. Quick and efficient security patch dissemination strategy is necessary for the update of antivirus software so that it can detect mobile virus, especially the new virus under the wireless mobile network environment with limited bandwidth which is also large scale, decentralized, dynamically evolving, and of unknown network topology. In this paper, we propose an efficient semi autonomy-oriented computing (SAOC) based patch dissemination strategy to restrain the mobile virus. In this strategy, some entities are deployed in a mobile network to search for mobile devices according to some specific rules and with the assistance of a center. Through experiments involving both real-world networks and dynamically evolving networks, we demonstrate that the proposed strategy can effectively send security patches to as many mobile devices as possible at a considerable speed and lower cost in the mobile network. It is a reasonable, effective, and secure method to reduce the damages mobile viruses may cause

From social machines to social protocols:Software engineering foundations for sociotechnical systems

The overarching vision of social machines is to facilitate social processes by having computers provide administrative support. We conceive of a social machine as a sociotechnical system (STS): a software-supported system in which autonomous principals such as humans and organizations interact to exchange information and services. Existing approaches for social machines emphasize the technical aspects and inadequately support the meanings of social processes, leaving them informally realized in human interactions. We posit that a fundamental rethinking is needed to incorporate accountability, essential for addressing the openness of the Web and the autonomy of its principals. We introduce Interaction-Oriented Software Engineering (IOSE) as a paradigm expressly suited to capturing the social basis of STSs. Motivated by promoting openness and autonomy, IOSE focuses not on implementation but on social protocols, specifying how social relationships, characterizing the accountability of the concerned parties, progress as they interact. Motivated by providing computational support, IOSE adopts the accountability representation to capture the meaning of a social machine’s states and transitions. We demonstrate IOSE via examples drawn from healthcare. We reinterpret the classical software engineering (SE) principles for the STS setting and show how IOSE is better suited than traditional software engineering for supporting social processes. The contribution of this paper is a new paradigm for STSs, evaluated via conceptual analysis

Intergovernmental relations in Nigeria: improving service delivery in core sectors

According to the Nigerian constitution, main public sector responsibilities are split across various government levels. Thus, no sole government could deliver radical improvements in service delivery on its own, which means that coordination and cooperation are pre-requisites. However, the existing mechanisms and institutions for inter-governmental policy coordination are weak and need strengthening. This paper suggests the following priority directions for reforming inter-governmental financing arrangements in Nigeria: a. more attention to the equity dimension of revenue sharing b. strengthening government accountability for utilization of public money in general, and for use of a common pool of funds such as the Federation Account in particular, and c. introduction of specific grant schemes directly linked to expansion of sub-national government financing in key sectorsNigeria, Fiscal federalism, Policy coordination, Horizontal inequality, conditional grants

The Promise of Health Information Technology: Ensuring that Florida's Children Benefit

Substantial policy interest in supporting the adoption of Health Information Technology (HIT) by the public and private sectors over the last 5 -- 7 years, was spurred in particular by the release of multiple Institute of Medicine reports documenting the widespread occurrence of medical errors and poor quality of care (Institute of Medicine, 1999 & 2001). However, efforts to focus on issues unique to children's health have been left out of many of initiatives. The purpose of this report is to identify strategies that can be taken by public and private entities to promote the use of HIT among providers who serve children in Florida

Emphasizing \u27the relational self\u27 as a goal in casework

Traditional and radical authors agree that strengthening the autonomy of service users is a primary aim in casework. The current paper seeks to balance this emphasis on individual autonomy by arguing that the relational aspects of the self also require attention. This argument proceeds in three steps. Firstly, recent theoretical work will be introduced to advance the premise that the self can be understood as &lsquo;relational&rsquo; as well as &lsquo;autonomous&rsquo;. Secondly, a summary is offered of the research which concludes that a strong social network, or in the more recently favoured terms, that &lsquo;social connectedness&rsquo; and &lsquo;attachment&rsquo;, is protective of health and well-being. Building on these two ideas, it is then suggested that it may be important for caseworkers to promote the quality of interdependence and connectedness of those service users with whom we work, irrespective of the presenting problem and the practitioner&rsquo;s preferred method and assigned practice role.<br /

Implementation of the Expanded Program on Immunization (EPI): Understanding the Enablers and Barriers in a Health System

Much has been written about the issues, challenges and constraints in the implementation of immunization program. However, there is a need to better understand the health system barriers as well as enablers that influence the progress. This chapter aims at bridging the information gaps about system-level factors that currently are impeding the optimal delivery and uptake of immunization services to the children through the Expanded Program on Immunization (EPI). This chapter draws its thematic content from a critical review of the EPI-related international and national reports. In addition to this, this chapter consulted government reports, surveys, and publications on health system. Themes generated from the literature review included financing, governance, service delivery, human resources, information system, and supplies and vaccines. Findings suggest that certain areas in the larger health system are to be improved for a more coordinated implementation of EPI. It is imperative to understand community’s behaviors and perceptions as well as demand side issues in order to achieve the desired results. For a better immunization coverage, EPI operations and performance must be improved. Implementation research could definitely help in developing an even finer understanding of the system-wide factors influencing the efficiency of the program