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The rise and fall of the Chinese stock market has been the subject of many studies since its inception. However, the recurring uncertainty of the broad market and individual stocks has overturned many people’s perceptions of the financial market. This paper explores the principles of the rise and fall of individual stocks under certain conditions, starting from Samuelson’s phenomenon of backward bending of the price supply curve for oil and labour, and proposes a methodology for stock market investment based on this principle. The results of the study show that the rise of stock prices is often characterized by a rapid jump. An important factor related to this is the interest rate of private lending. The rise and fall of private lending rates affect the expected return on stock market investment funds and has an important impact on stock market investment. Therefore, in the absence of a qualitative change in the stock’s texture, the medium-term rate of increase is the key to judging the stock price’s later trend. The results of this study provide a new direction to think about when judging the short- and medium-term stock price movements.

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.

Blended learning model draws lessons from MOOC's network platform technology and combines the advantages of traditional methods and network learning. It not only plays the leading role of teachers in guiding, inspiring and monitoring the teaching process, but also fully embodies the leading role of students. The mixed teaching mode of MOOC and flipped classroom brings new challenges and opportunities to the teaching reform of vocational education. This paper first analyzes the connotation of the mixed teaching mode of curriculum, and discusses the preparation of curriculum resources, teaching process and methods, and curriculum effect evaluation. Practice has proved that the research based on online and offline mixed teaching mode can teach students in accordance with their aptitude, strengthen their communication and cooperation, enhance their autonomous learning ability, improve their team cooperation ability, and greatly enhance the teaching effect of the course.

The practical teaching is an important link to improve the actual combat ability. Colleges and universities should attach importance to the practical teaching under the condition of actual combat, take more systematic and effective measures to improve the quality of practical teaching, and then comprehensively enhance the actual combat ability of the army. Through the organic integration of theory, virtual reality, equipment practice and actual combat, this paper deeply studies and considers the practical teaching environment, teaching material system, teaching staff, teaching material system, teaching quality evaluation methods and other issues in line with the actual combat of the army, so as to further promote the practical teaching level of aircraft spares seal up for safekeeping technology course.

Microplastics are attracting more and more attention as a new type of pollutant in the ecological environment. Microplastics are difficult to degrade because of their unique physical and chemical properties. Some microplastics adsorbed toxic chemicals (e.g. heavy metals or organic pollutants) will cause a series of toxicological effects in organisms. This paper summarized the research progress in microplastics from the aspects of the types, distribution, detection and the toxicological effects. In addition, future research directions were also proposed and discussed.

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.

There is an increased demand for miniature/micro products (such as MEMS) and nanotechnology-based products (such as nano-materials). Micro-manufacturing is a link between Macro-and Nano Manufacturing and an effective means for transferring nanotechnology-product designs into volume production. The micro forming has the potential for low-cost, high volume manufacturing applications. In order to meet the high demands on miniaturised products, a rapid production technique and the system, high flexibility, cost-effectiveness and processing a wide range of materials are needed. Recently, a series of studies have been undertaken to investigate forming miniature/micro-components by using a combination of micro-forming and Electrical-field activated sintering (Micro-FAST). The process uses low voltage and high current density, pressure-assisted densification and synthesis technique, which renders several significant merits. The work to be reported in this paper will be focused on the forming of miniature components from Zirconia (ZrO2) powder, without using binders. Several processing parameters have been investigated, such as pressure, heating rate, heating temperature and holding time, which helped to obtain high-quality parts. Using graphite dies and punches, sample parts (solid cylinders of Ø4.00mm × 4.00 mm) were formed. These were subjected to detailed examinations and analysis, such as analysis of the relative density, hardness at the necks formed among the particles and in the particle bodies, as well as the microstructures. The results showed that directly forming the parts from loose powder is feasible, and by properly designing and control the processing parameters, high-quality parts could be achieved, among which heating temperature and holding time are extremely important. At the same time, due to low conductivity of the powder material, carefully designing the tooling is essentials for ensuring properly heating, pressurisation and cooling.

The transient transformation of track circuit between the normal state and crack state is analyzed. Firstly, the model of crack state of track circuit in the complex frequency domain is established. According to the boundary conditions of crack state of track circuit, the expression of current traveling wave in the receiving end is obtained in complex frequency domain. Based on it, the numerical solution in the time domain is got by FFT&IFFT conjunction with quotient-difference (Q-D) algorithm. Then, the steady state of circuit in normal state is taken as state of zero moment of track circuit, the transient process from normal state transform into crack state is solved. Thirdly, the Electro-Magnetic Transient Program (EMTP) model of crack operation is established to prove that the transient analysis result is correct. It provides a power theoretical basis to distinguish the operation state of track circuit by transient analysis.

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.

The dimensions that constitute the technological innovation capabilities (TIC) can be a source to improve business performance. Based on the resource-based view and contingency theory, this paper tries to propose a conceptual model to further understand the moderating role of environmental turbulence in effecting of the firm’s TIC on firm’s business performance in the automotive industry in Malaysia. This paper then developed into concrete research hypotheses for future studies. The conceptual model will serve to guide further research in the area, which can be expected to contribute in the development of automotive industry in Malaysia. Empirical testing of this proposed model is expected in future study using survey instrument.

In this paper, the mixer parametric modeling system software was developed by using VB which was taken as the foreground development program, and the paper combined with ANSYS software to create the finite element model of mixer blade and cylinder for the following numerical simulation of the flow field and parameter optimization of mixer. The software user interface was developed by VB and the pre-process model was created by invoking APDL of ANSYS in background. Therefore, the operation of modeling, meshing, component-building of mixer blade and cylinder were completed by using APDL and the graphic and text were outputted and displayed on the mixer parametric modeling system user interface which was developed by VB. Practice proved that it is convenient to modify the mixer solid model created by the parametric design language of ANSYS due to the similar structure.