The purpose of the present study was to explore the self-learning experiences of depression patients on interactive multimedia education program. Qualitative in-depth interviews were employed. Fourteen patients with a first episode of major depression were recruited from a psychiatric outpatient department. Explanations of the purposes of the exercise and on-the-spot teaching were provided by the researcher before the study began. A tape-recorded, semi-structured interview format was employed after two weeks. Data analysis was performed in the framework of line-by-line content, contextual and thematic analysis. Eight subjects successfully completed the entire learning activities. Content analysis revealed 4 main aspects of successful self-learning experiences: the triggering of learning motivation, the enjoyment of self-paced learning, support for the effects of learning materials, and the gaining of self-awareness and changes. The factors influencing learning performance were related to: environmental impact, the degree of familiarity with traditional learning, possession or non-possession of the necessary computer operation skills, and good computer support. However, the findings provide a preliminary understanding of the application of interactive multimedia education programs in terms of self-learning outcomes and recognizing key elements of learning impediments among the study sample. A larger sample size with different clinical contexts is recommended to determine the effect and generalizability for future research. Furthermore, the creation of a computerized learning environment with different educational styles is crucial to patients' success in obtaining depression-related information and understanding effective adaptive skills.
Due to hydraulic pump’s multiple fault parameters, imprecision of fault diagnosis and bad fuzzy properties, a novel method of data preprocess to remove the noise disturbance and extract the characteristics of parameters, in which the order analysis is applied, is put forward. Then the hydraulic pump’s fault is diagnosed with decision-level data fusion of multiple sensors. The practical results showed that the fault diagnosis method based on D-S proof theory and decision-level data fusion could promote the accuracy and efficiency of hydraulic pump’s fault diagnosis.
This paper introduced the method that developed model and frequency analyses of powertrain mounting system based on ADAMS (Automatic Dynamic Analysis of Mechanical Systems ). The six vibration frequencies and its corresponding modes were obtained and compared with experimental results. Mount stiffness of the four mounting parts were optimized to use Adams/Insight. The former low decoupling degrees and the new part stiffness were observed to improve the disadvantage and can reduce the vibration transfer.
Using an adjusted explosive welding technique, a Zr-2 alloy plate, a titanium plate and a carbon steel plate were cladded to form a three-layer composite panel which is difficult to manufacture by common methods. Microstructural evaluations reveal that a metallurgical bonding interface with wave morphology is realized, and the grains near the interface are smaller than grains in other areas. The microhardness of the sample near the interface is greatly higher than that of other areas. Furthermore, mechanical experimental evidence indicates the shearing strength of the interface in the moderate condition exceeds that of the interlayer plate.
The crew emergency evacuation security system is a life-saving device, the ultimate function of which is to save the life of the aircraft crew in a new regional airliner at high altitude. The system is used to push the service door with translational motion for a suitable distance. Before the system was started, the force state of the service door was got with the fluid mechanics knowledge. When the system was started, after a period of pressure relief time, the aircraft cabin pressure was calculated with the Bernoulli's Equation. The movement trajectory and the force state of the service door were obtained by the computational fluid dynamics theory and numerical simulation method. All of the above work must lay a theoretical foundation for the development of the crew emergency evacuation security system, and ensure the flight safety.
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