Multi-Criterion Mammographic Risk Analysis Supported with Multi-Label Fuzzy-Rough Feature Selection

Context and background Breast cancer is one of the most common diseases threatening the human lives globally, requiring effective and early risk analysis for which learning classifiers supported with automated feature selection offer a potential robust solution. Motivation Computer aided risk analysis of breast cancer typically works with a set of extracted mammographic features which may contain significant redundancy and noise, thereby requiring technical developments to improve runtime performance in both computational efficiency and classification accuracy. Hypothesis Use of advanced feature selection methods based on multiple diagnosis criteria may lead to improved results for mammographic risk analysis. Methods An approach for multi-criterion based mammographic risk analysis is proposed, by adapting the recently developed multi-label fuzzy-rough feature selection mechanism. Results A system for multi-criterion mammographic risk analysis is implemented with the aid of multi-label fuzzy-rough feature selection and its performance is positively verified experimentally, in comparison with representative popular mechanisms. Conclusions The novel approach for mammographic risk analysis based on multiple criteria helps improve classification accuracy using selected informative features, without suffering from the redundancy caused by such complex criteria, with the implemented system demonstrating practical efficacy

Introducing Accountability to Anonymity Networks

Many anonymous communication (AC) networks rely on routing traffic through proxy nodes to obfuscate the originator of the traffic. Without an accountability mechanism, exit proxy nodes risk sanctions by law enforcement if users commit illegal actions through the AC network. We present BackRef, a generic mechanism for AC networks that provides practical repudiation for the proxy nodes by tracing back the selected outbound traffic to the predecessor node (but not in the forward direction) through a cryptographically verifiable chain. It also provides an option for full (or partial) traceability back to the entry node or even to the corresponding user when all intermediate nodes are cooperating. Moreover, to maintain a good balance between anonymity and accountability, the protocol incorporates whitelist directories at exit proxy nodes. BackRef offers improved deployability over the related work, and introduces a novel concept of pseudonymous signatures that may be of independent interest. We exemplify the utility of BackRef by integrating it into the onion routing (OR) protocol, and examine its deployability by considering several system-level aspects. We also present the security definitions for the BackRef system (namely, anonymity, backward traceability, no forward traceability, and no false accusation) and conduct a formal security analysis of the OR protocol with BackRef using ProVerif, an automated cryptographic protocol verifier, establishing the aforementioned security properties against a strong adversarial model

Risk Governance: Examining its Impact Upon Bank Performance and Risk

This study examines the emergence of risk governance arrangements in US bank holding companies (BHCs) and tests for their impact upon performance and risk profiles. Following the financial crisis, regulators introduced several new risk governance processes, including the adoption of Risk Appetite arrangements and the establishment of Risk Committees, both board level features. In this study, a research gap is unearthed with respect to risk governance practices and their impact upon BHC performance and risk measures. The motivation of this research is to validate the adoption of these board-level practices in an evidence-based framework. The empirical research method relies on the collection of a unique data set. The sample covers a significant dollar-weighted portion of the US banking system. Multivariate analysis facilitates the testing of risk governance mechanisms to outcome variables, while controlling for firm-specific and standard corporate governance variables. The practical implication of this study with respect to Risk Appetite is clear. BHCs that practice Risk Appetite arrangements exhibit improved performance and lower realised loan losses. In contrast, while some limited evidence is presented that the marketplace may reward BHCs for certain composition aspects of the Risk Committee, the overall results suggest that the requirement for a Risk Committee has little impact to BHC’s operating performance and risk measures. In terms of academic contribution, this study examines two major risk governance mechanisms within a common framework, presenting evidence of a significant and positive impact of the board level articulation of Risk Appetite arrangements to a suite of BHC performance measures and a negative association to loan losses. As the first known empirical research study of Risk Appetite, it confirms that this board level mechanism should be included as an explanatory variable in bank or risk governance related empirical research studies. These findings provide industry practitioners (including BHC chief executive officers and board members) convincing arguments for the immediate adoption of Risk Appetite arrangements. US Regulators, who introduced Risk Appetite requirements in 2014 for larger BHCs, are presented with validation by this study for wider adoption of this risk governance mechanism, even if such practices are voluntarily adopted by BHCs. As signs begin to emerge in the United States of the possible relaxation of the regulatory requirements of certain aspects of the Dodd-Frank Act, this study contributes to this debate in a timely fashion by testing the veracity of two key supervisory-driven risk governance practices aimed at the boardroom in an evidence-based evaluation

Technologies for climate change adaptation: agricultural sector

This Guidebook presents a selection of technologies for climate change adaptation in the agricultural sector. A set of twenty two adaptation technologies are showcased that are primarily based on the principals of agroecology, but also include scientific technologies of climate and biological sciences complemented with important sociological and institutional capacity building processes that are required to make adaptation function. The technologies cover monitoring and forecasting the climate, sustainable water use and management, soil management, sustainable crop management, seed conservation, sustainable forest management and sustainable livestock management. Technologies that tend to homogenize the natural environment and agricultural production have low possibilities of success in conditions of environmental stress that are likely to result from climate change. On the other hand, technologies that allow for, and indeed promote, diversity are more likely to provide a strategy which strengthens agricultural production in the face of uncertain future climate change scenarios. In this sense, the twenty two technologies showcased in this Guidebook have been selected because they facilitate the conservation and restoration of diversity while at the same time providing opportunities for increasing agricultural productivity. Many of these technologies are not new to agricultural production practices, but they are implemented based on assessment of current and possible future impacts of climate change in a particular location. Agro-ecology is an approach that encompasses concepts of sustainable production and biodiversity promotion and therefore provides a useful framework for identifying and selecting appropriate adaptation technologies for the agricultural sector. The Guidebook provides a systematic analysis of the most relevant information available on climate change adaptation technologies in the agriculture sector. It has been compiled based on a literature review of key publications, journal articles, and e-platforms, and by drawing on documented experiences sourced from a range of organizations working on projects and programmes concerned with climate change adaptation technologies in the agricultural sector. Its geographic scope is focused on developing countries where high levels of poverty, agricultural production, climate variability and biological diversity currently intersect. Key concepts around climate change adaptation are not universally agreed. It is therefore important to understand local contexts – especially social and cultural norms - when working with national and sub-national stakeholders to make informed decisions about appropriate technology options. Thus, decision-making processes should be participative, facilitated, and consensus-building oriented and should be based on the following key guiding principles: increasing awareness and knowledge, strengthening institutions, protecting natural resources, providing financial assistance and developing context-specific strategies. For decision-making the Community–Based Adaptation framework is proposed for creating inclusive governance that engages a range of stakeholders directly with local or district government and national coordinating bodies, and facilitates participatory planning, monitoring and implementation of adaptation activities. Seven criteria are suggested for the prioritization of adaptation technologies: (i) The extent to which the technology maintains or strengthens biological diversity and is environmentally sustainable; (ii) The extent to which the technology facilitates access to information systems and awareness of climate change information; (iii) Whether the technology support water, carbon and nutrient cycles and enables stable and/or increased productivity; (iv) Income-generating potential, cost-benefit analysis and contribution to improved equity; (v) Respect for cultural diversity and facilitation of inter-cultural exchange; (vi) Potential for integration into regional and national policies and can be scaled-up; (vii) The extent to which the technology builds formal and information institutions and social networks. Finally, recommendations are set out for practitioners and policy makers: • There is an urgent need for improved climate modelling and forecasting which can provide a basis for informed decision-making and the implementation of adaptation strategies. This should include traditional knowledge. • Information is also required to better understand the behaviour of plants, animals, pests and diseases as they react to climate change. • Potential changes in economic and social systems in the future under different climate scenarios should also be investigated so that the implications of adaptation strategy and planning choices are better understood. • It is important to secure effective flows of information through appropriate dissemination channels. This is vital for building adaptive capacity and decision-making processes. • Improved analysis of adaptation technologies is required to show how they can contribute to building adaptive capacity and resilience in the agricultural sector. This information needs to be compiled and disseminated for a range of stakeholders from local to national level. • Relationships between policy makers, researchers and communities should be built so that technologies and planning processes are developed in partnership, responding to producers’ needs and integrating their knowledge

An overview on the development of internal control in public sector entities : evidence from Kosovo

Purpose: The development and implementation of Public Internal Financial Control (PIFC) in the management processes plays an important role in providing sound financial management, transparency, efficiency and effectiveness in the public sector entities. Design/Methodology/Approach: In this paper we have analysed the annual reports on the functioning of the PIFC system in the public sector of Kosovo for the 2014 – 2017 period. The analysis has been completed even more, based on the annual reports of National Audit Office, progress reports published by the European Commission, showing the progress achieved under the EU directives as well as the data from the monitoring reports of SIGMA (Support for Improvement in Governance and Management). Findings: The findings show that the implementation of rules and procedures for internal control in budget organizations lags behind the development of the overall framework. Practical Implications: Continuous improvements in the field of Public Internal Financial Control are important steps in the process of European integration, while Kosovo has made considerable efforts to develop the control environment and implement the PIFC principles, particularly by establishing the appropriate legal, and institutional framework to support the PIFC system. Originality/Value: PIFC development is a continuous process and is part of the public administration reform, hence this paper contributes in identifying possible gaps and weaknesses in the system of internal control in Kosovo and provides recommendations for their improvement.peer-reviewe

Optimization of factorial portfolio of trade enterprises in the conditions of the non-payment crisis

The economic mechanism for factoring management of trade enterprises was improved by applying a tool for refinancing receivables involving third parties, which will contribute to the effective management of fundraising processes from the standpoint of the income approach. The instruments for the implementation of the economic mechanism of factoring management of commercial enterprises, consisting of five blocks were improved (analysis of commercial enterprise debtors’ solvency in order to transfer them to factoring services; analysis of accounts receivable and assessment of its real value; planning of cash flows from factoring operations; factoring implementation assessment; monitoring and control of the repayment of receivables in the process of factoring services), that allows substantiating practical recommendations for improving the level of factoring management. Based on the concept of a portfolio of investments, a factoring model was built to optimize the debtors of the enterprise

Risk models and scores for type 2 diabetes: Systematic review

This article is published under a Creative Commons Attribution Non Commercial (CC BY-NC 3.0) licence that allows reuse subject only to the use being non-commercial and to the article being fully attributed (http://creativecommons.org/licenses/by-nc/3.0).Objective - To evaluate current risk models and scores for type 2 diabetes and inform selection and implementation of these in practice. Design - Systematic review using standard (quantitative) and realist (mainly qualitative) methodology. Inclusion - criteria Papers in any language describing the development or external validation, or both, of models and scores to predict the risk of an adult developing type 2 diabetes. Data sources - Medline, PreMedline, Embase, and Cochrane databases were searched. Included studies were citation tracked in Google Scholar to identify follow-on studies of usability or impact. Data extraction - Data were extracted on statistical properties of models, details of internal or external validation, and use of risk scores beyond the studies that developed them. Quantitative data were tabulated to compare model components and statistical properties. Qualitative data were analysed thematically to identify mechanisms by which use of the risk model or score might improve patient outcomes. Results - 8864 titles were scanned, 115 full text papers considered, and 43 papers included in the final sample. These described the prospective development or validation, or both, of 145 risk prediction models and scores, 94 of which were studied in detail here. They had been tested on 6.88 million participants followed for up to 28 years. Heterogeneity of primary studies precluded meta-analysis. Some but not all risk models or scores had robust statistical properties (for example, good discrimination and calibration) and had been externally validated on a different population. Genetic markers added nothing to models over clinical and sociodemographic factors. Most authors described their score as “simple” or “easily implemented,” although few were specific about the intended users and under what circumstances. Ten mechanisms were identified by which measuring diabetes risk might improve outcomes. Follow-on studies that applied a risk score as part of an intervention aimed at reducing actual risk in people were sparse. Conclusion - Much work has been done to develop diabetes risk models and scores, but most are rarely used because they require tests not routinely available or they were developed without a specific user or clear use in mind. Encouragingly, recent research has begun to tackle usability and the impact of diabetes risk scores. Two promising areas for further research are interventions that prompt lay people to check their own diabetes risk and use of risk scores on population datasets to identify high risk “hotspots” for targeted public health interventions.Tower Hamlets, Newham, and City and Hackney primary care trusts and National Institute of Health Research

Tanzania Review of Exemptions and Waivers

The work which is presented in this report reflects a need identified by the Ministry of Health to improve the functionality of the exemptions and waivers systems which had been introduced to reduce the financial burden on groups of the population who need access to health care and who either cannot afford to contribute to the costs or who have an illness or disease which threatens the public good and for which no direct charges should be imposed. The exemptions and waivers systems, while potentially very effective in principle, were deemed not to be working well in practice. A significant body of work already exists on the health sector in Tanzania, with plenty of references to the exemptions and waivers systems. The task of the team undertaking this study was not to replicate the work of previous studies but rather to find ways to make some of the recommendations happen. The ‘how to’ element was seen as the most crucial aspect of the work, and the aspect which presented the greatest challenge. The results from all the available documentation were used, and were augmented by field visits to a number of regions and districts in the north and south of the country, where proposals for reinforcement of the waivers and exemptions systems could be tested with practitioners and users of the health sector. The strategy proposed in the document is divided into a long term strategy and an interim strategy. The long terms strategy is to have the whole population of Tanzania covered by one or another insurance scheme, from a selection of current and proposed schemes: the National Health Insurance Fund scheme for civil servants, the Social Security Fund health benefits scheme for formal sector employees, the proposed social insurance scheme for informal sector workers, the CHF or a scheme to cover those who are not eligible or cannot afford to participate in any of the others. The interim strategy identifies ways and means of strengthening the systems to ensure more equitable access to health services for those who are entitled to exemptions and waivers, with recommendations about how those systems can be refined to target those who most need them. Successful examples from the field are used to show the way forward. The interim strategy includes refinement of the exemptions system; expansion and consolidation of the Community Health Fund (CHF); development of TIKA, the urban equivalent of the CHF; the development of an ID card scheme for those who cannot afford to pay or to participate in any of the schemes; and the strengthening of the institutions which provide health care and which plan and monitor the services provided. The ID card scheme, being new to the stable of proposals for strengthening the exemptions and waivers systems, is fully elucidated from the rationale, through the principles behind it, to the identification process for those eligible, the issuing of the card, the roles of each of the institutions at leach level of the administrative structure, the financing of the scheme and the advocacy required to endure that it works the way it is intended by providing for those most in need. Inevitably, the proposals cannot be implemented in a vacuum and where there are risks involved, either general or specific, these have been identified