1,322 research outputs found

    Differential Mortality and Retirement Benefits in the Health and Retirement Study

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    This analysis uses data from the Health and Retirement Study (HRS) to examine the sources of variation in mortality for individuals of varying socio-economic status (SES). The use of the HRS allows a distinction between education and a measure of career earnings as primary determinants of socio-economic status for men and women separately. We use those predictions of mortality to estimate the distribution of annual and lifetime OASDI benefits for different birth cohorts spanning the birth years from 1900 to 1950. We find differential rates of mortality have had substantial effects in altering the distribution lifetime benefits in favor of higher income individuals

    Information Management and BIM Standards and Supports Inventory

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    The Digital Standards pillar consists of industry experts who champion the benefits of common rules, guidelines, and workflows that facilitate the improvement of information flow and information management across asset life cycles. Digital standards provide a common language that can be translated to technical specifications enabling clients, designers, contractors, and facilities managers, irrespective of their preferred tools, to communicate efficiently and reduce cost, rework, and disputes. Working closely with the Digital Procurement and Digital Education and Training pillars, this pillar is developing and delivering Irish Information Management/BIM (Digital Construction) guidelines for the sector. This report summarises existing digital construction standards, guidance documents, and templates. The objectives of this report are: To identify digital construction standards and supporting resources available to the industry. To create a grading system for the reviewed digital construction standards and documents based on their relevance to the Irish sector. The methodology of this report and tool consisted of desk research into digital construction standards and supporting documents found both online and in the standards database. A spreadsheet was developed as a tool for identifying relevant standards and, in particular, their relevance to Build Digital. Each document found in this research was recorded, reviewed, and graded based on the scoring system created for this report and tool. Standards and documentation deemed most important were graded with ‘recommended’. This tool is intended to be flexible should new standards be published, or a change is required to an existing standard

    A Study of the Physicochemical and Sensory Properties of Organic and Conventional Potatoes (Solanum tuberosum) Before and After Baking

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    The objective of this study was to investigate if there were any differences in the physicochemical and sensory properties of organic and conventional potatoes (cv. Orla). The conventional potatoes had a lower dry matter content (P \u3c 0.05) and a slightly softer texture (P V 0.05) than the organic potatoes. The trained panel perceived the conventional baked potato to be slightly softer, less adhesive and wetter than the organic baked potato (

    Tanzania: Logistic System Capacity and Site Readiness to expand PMTCT and Initiate ART

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    In September 2003, JSI/DELIVER conducted an assessment of the logistics system capacity and individual site readiness to provide PMTCT services and to initiate ART at selected public sector health facilities in Tanzania. The purpose of the assessment was to support government expansion of PMTCT from five pilot sites to 28 health facilities in five regions by addressing the logistics system constraints to ensuring a reliable and uninterrupted supply of the broad range of commodities required for PMTCT and ART, and by conducting an evaluation of the overall readiness of each site to provide these services. Several private providers, nongovernmental and faith-based organizations, and employer-based programs were included in the assessment to learn about PMTCT and ART in these sectors and to identify opportunities for public/private sector collaboration in expanding service delivery and ensuring effective commodity distribution. In addition, interviews with pharmaceutical company representatives and visits to retail pharmacies provided an overview of current commercial sector distribution of ARV drugs in Tanzania. The main findings showed an urgent need to build logistics management capacity within the central level MOH to—Coordinate multiple sources of rapidly increasing funding for commodity procurement. Strengthen commodity-forecasting capacity. Align procurement cycles and supplier lead times with the in-country supply pipeline and demand for services. At the facility level, assessment findings showed that individual site readiness is heavily constrained by the availability and quality of human resources; laboratory infrastructure and capacity; and lack of an established inventory control system and standardized pharmacy management procedures

    Classifying network attack scenarios using an ontology

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    This paper presents a methodology using network attack ontology to classify computer-based attacks. Computer network attacks differ in motivation, execution and end result. Because attacks are diverse, no standard classification exists. If an attack could be classified, it could be mitigated accordingly. A taxonomy of computer network attacks forms the basis of the ontology. Most published taxonomies present an attack from either the attacker's or defender's point of view. This taxonomy presents both views. The main taxonomy classes are: Actor, Actor Location, Aggressor, Attack Goal, Attack Mechanism, Attack Scenario, Automation Level, Effects, Motivation, Phase, Scope and Target. The "Actor" class is the entity executing the attack. The "Actor Location" class is the Actor‟s country of origin. The "Aggressor" class is the group instigating an attack. The "Attack Goal" class specifies the attacker‟s goal. The "Attack Mechanism" class defines the attack methodology. The "Automation Level" class indicates the level of human interaction. The "Effects" class describes the consequences of an attack. The "Motivation" class specifies incentives for an attack. The "Scope" class describes the size and utility of the target. The "Target" class is the physical device or entity targeted by an attack. The "Vulnerability" class describes a target vulnerability used by the attacker. The "Phase" class represents an attack model that subdivides an attack into different phases. The ontology was developed using an "Attack Scenario" class, which draws from other classes and can be used to characterize and classify computer network attacks. An "Attack Scenario" consists of phases, has a scope and is attributed to an actor and aggressor which have a goal. The "Attack Scenario" thus represents different classes of attacks. High profile computer network attacks such as Stuxnet and the Estonia attacks can now be been classified through the “Attack Scenario” class

    Analysing Similarity in Exam Timetabling

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    In this paper we carry out an investigation of some of the major features of exam timetabling problems with a view to developing a similarity measure. This similarity measure will be used within a case-based reasoning (CBR) system to match a new problem with one from a case-based of previously solved problems. The case base will also store the heuristic for meta-heuristic techniques applied most successfully to each problem stored. The technique(s) stored with the matched case will be retrieved and applied to the new case. The CBR assumption in our system is that similar problems can be solved equally well by the same technique

    Physical and Oxidative Stability of Functional olive Oil-in-Water Emulsions Formulated Using Olive Mill Wastewater and Whey Proteins

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    The present paper reports on the use of phenolic extracts from olive mill wastewater (OMW) in model olive oil-in-water (O/W) emulsions to study their effect on their physical and chemical stability. Spray-dried OMW polyphenols were added to a model 20% olive O/W emulsion stabilized with whey protein isolate (WPI) and xanthan gum, in phosphate buffer solution at pH 7. The emulsions were characterised under accelerated storage conditions (40 °C) up to 30 days. Physical stability was evaluated by analysing the creaming rate, mean particle size distribution and mean droplet size, viscosity and rheological properties, while chemical stability was assessed through the measurement of primary and secondary oxidation products. The rheological behaviour and creaming stability of the emulsions were dramatically improved by using xanthan gum, whereas the concentration of WPI and the addition of encapsulated OMW phenolics did not result in a significant improvement of physical stability. The formation of oxidation products was higher when higher concentrations of encapsulated polyphenols were used, indicating a possible binding with the WPI added in the system as a natural emulsifier. This paper might help in solving the issue of using the olive mill wastewater from olive processing in formulating functional food products with high antioxidant activity and improved health properties
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