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IntroductionHealth insurance registries, which capture insurance coverage and demographic information for entire populations, are a critical component of population health surveillance and research when using administrative data. Lack of standardization of registry information across Canada’s provinces and territories could affect the comparability of surveillance measures. We assessed the contents of health insurance registries across Canada to describe the populations covered and document registry similarities and differences. MethodsA survey about the data and population identifiers in health insurance registries was developed by the study team and representatives from the Public Health Agency of Canada. The survey was completed by key informants from most provinces and territories and then descriptively analyzed. ResultsResponses were received from all provinces; partial responses were received from the Northwest Territories. Demographic information in health insurance registries, such as primary address, date of birth and sex, were captured in all jurisdictions. Data captured on familial relationships, ethnicity and socioeconomic status varied among jurisdictions, as did start and end dates of coverage and frequency of registry updates. Identifiers for specific populations, such as First Nations individuals, were captured in some, but not all jurisdictions. ConclusionHealth insurance registries are a rich source of information about the insured populations of the provinces and territories. However, data heterogeneity may affect who is included and excluded in population surveillance estimates produced using administrative health data. Development of a harmonized data framework could support timely and comparable population health research and surveillance results from multi-jurisdiction studies.

IntroductionLes registres d’assurance-maladie, qui recueillent des renseignements sur la couverture et certaines caractéristiques des individus à l’échelle de larges populations, sont précieux pour la surveillance de la santé de la population et de la recherche fondée sur l’utilisation de données administratives. Le fait que les données des registres des provinces et des territoires du Canada ne soient pas normalisées est susceptible de nuire à la comparabilité des mesures de surveillance. Nous avons évalué le contenu des registres d’assurance-maladie au Canada afin de décrire les populations couvertes et de relever les similitudes et les différences entre les registres. MéthodologieL’équipe de l’étude et des représentants de l’Agence de la santé publique du Canada ont élaboré une enquête sur les caractéristiques individuelles et les données sur la population recueillies dans les registres d’assurance-maladie. Les réponses des informateurs clés des provinces et territoires qui ont répondu à l’enquête ont été analysées de façon descriptive. RésultatsToutes les provinces ont répondu à l’enquête et les Territoires du Nord-Ouest ont fourni des réponses partielles. Certaines caractéristiques individuelles figurant dans les registres d’assurance-maladie (l’adresse principale, la date de naissance et le sexe) sont saisies dans toutes les provinces et tous les territoires. Les données disponibles sur les liens de parenté, l’origine ethnique et le statut socioéconomique sont variables selon les provinces et territoires, tout comme les dates de début et de fin de couverture et la fréquence de mise à jour du registre. L’information sur des populations particulières, comme les membres des Premières Nations, est saisie dans certaines provinces et certains territoires seulement. ConclusionLes registres d’assurance-maladie constituent une riche source d’information sur les populations assurées des provinces et des territoires. Cependant, l’hétérogénéité des données peut avoir un impact sur les personnes incluses et exclues dans les estimations de surveillance de la population produites à partir de données administratives sur la santé. L’élaboration d’un cadre de données harmonisé favoriserait l’obtention de résultats comparables et à jour en matière de recherche et de surveillance de la santé de la population dans le cadre d’études intergouvernementales.

On-orbit manufacturing is affected by space microgravity, high vacuum, large temperature variation, strong radiation and other environmental factors, which also puts forward new requirements for materials and process methods suitable for on-orbit manufacturing. This paper summarizes the current research status of different scholars on materials and technologies for on-orbit manufacturing. The main application scenarios and requirements of on-orbit manufacturing are analysed. The technical capability requirements under different application requirements are analysed. Then according to the material source, material use and manufacturability, the material system for in-orbit manufacturing is established. According to different technical requirements, the manufacturing technology system of on-orbit manufacturing is established. From the point of view of materials and technology, the key technical directions that should be broken through in on-orbit manufacturing are put forward. It can provide reference for the subsequent research on materials and process technology of on-orbit manufacturing.

Aiming at the difficulty in quality prediction of sintered ores, a hybrid prediction model is established based on mechanism models of sintering and time-weighted error compensation on the basis of the extreme learning machine (ELM). At first, mechanism models of drum index, total iron, and alkalinity are constructed according to the chemical reaction mechanism and conservation of matter in the sintering process. As the process is simplified in the mechanism models, these models are not able to describe high nonlinearity. Therefore, errors are inevitable. For this reason, the time-weighted ELM based error compensation model is established. Simulation results verify that the hybrid model has a high accuracy and can meet the requirement for industrial applications.

Spacecraft is always equipotential connected. Faults in grounding cause electromagnetic dysfunction for airborne equipment or subsystems, which can be fatal for a satellite mission. Consequences of electromagnetic problems were evaluated in his paper on system level, and typical scenarios of electromagnetic interference were analysed, based on which a recommended system grounding model was put forward. In the end, measures for electromagnetic isolation and protection in spacecraft general assembly were introduced and analysed.

The overuse of fossil fuels has caused an energy crisis and associated environment issues. It is desirable to utilize renewable resources for the production of chemicals. This review mainly introduces our recent work on the transformation of renewable carbon resources including the conversion of cellulose, lignin, and chitin into sustainable chemicals. Various transformation routes have been established to form value-added chemicals, and accordingly a variety of effective catalytic systems have been developed, either based on metal catalysis and/or acid-base catalysis, to enable the desired transformation.

Flexible tethered-net, a new kind of structure for advanced concepts in space exploration, has special potential application such as capturing space debris and building huge antenna. A critical issue in the design and analysis of space net system is deployment of modelling technology. The dynamics behaviour of flexible net systems is investigated based on finite segment approach in this paper. The flexible net is modelled as a series of collected semi-damp springs with masses lumped at appropriated nodes. Besides, a comprehensive study on a model for the tethered-net based on absolute nodal coordinates formulation (ANCF) is provided. Simulations show that the results based on the ANCF modelling method present a good agreement with that based on the conventional semi–spring damper modelling method. Then the flexible multibody dynamics models has been verified by comparison with ground experiment.