This instrument is controlled by computer.It can follow up and correct errors which may take place both within and without the X-ray generation system.It can detect the real amount of attenuation of X-ray in human chest and bring X-ray on the desired working voltage (kV)、current (mA)and the exposure time,(s) of X-ray generation system under stepless control.This instrument is rather an intelligential system of an automatic radiograph,and has ability to take higher quality film for chest within conventional kV range.

Objective:To investigate the relationship among college student’s depression symptoms, problem solving appraisal and perceived stress.Methods:275 college students completed questionnaires, including CES-D, Chinese Perceived Stress Scale (CPSS) and Chinese Problem Solving Inventory (CPSI). Results: Among these students, 52% reported on the level of health risk stress (HRS), 55.3% had depression symptoms. There were significant correlation among depression symptoms, perceived stress and problem solving appraisal. The causal relationship between them were identified with the path analysis method, problem solving in special, seems to have both direct and indirect effect on the prediction of depression and on perceived stress. Conclusion:There is a high level of college student perceived stress and depression symptoms. Problem solving appraisal is an important factor for both of them.

Objective:To determine the cost of medical insurance macroeconomic factors,and propose countermeasures for macro-control health insurance costs.Methods:Principal component analysis was applied to screen dominant macroeconomic factors that influenced medical insurance costs of Shanghai.Results:From the macro perspective,the economy and technology were the main factors affecting medical insurance costs.Conclusion:It needed to increase government investment in public health finance,develop cost-declined medical technology and strengthen the construction of medical and health information,as well as to strengthen government oversight.

Abscess ; surgery ; Foreign Bodies ; surgery ; Foreign-Body Migration ; Humans ; Thyroid Gland

Objective To evaluate the effect of the miracle questions in solution?focused brief therapy on memory tend and emotional stage in a non?clinical situation in college students. Methods A quasi?experimental design was adopted,and two kinds of materials for self?coaching( solution?focused,problem?focused) were devel?oped according to the previous researches. Seventy?two subjects were randomly divided into two groups,receiving the miracle questions in solution?focused brief therapy( The miracle question group,thirty?six subjects) or problem?focused coaching intervention(problem?focused group,thirty?six subjects).Exception memories number and positive and negative emotion level were evaluated between the two groups. Results The subjects receiving the miracle question group write more exception memories (3.67±2.07) than problem?focused group (1.61±1.18) ( t=5.178, P<0.01) . There was no significant difference in the positive and negative emotion level between the two groups(P>0.05) . Conclusion The miracle questions in solution?focused brief therapy can trigger the subjects to exceptional memories .This suggests that in practical application,questions order has impact on the effect of consultation. Be?fore asking exception question,miracle questions should be asked in the use of solution?focused intervention.

According to the present situation of our physics laboratories for teaching evaluation,considering the evaluation as a opportunity,the article probes into how to promote and strengthen the construction of physics laboratories and fully promote the reform and development of physics work.

To carry out the innovation education in physics experiment,the teaching personnel should firstly update their concept involved,enhance the consciousness of innovation and optimize the teaching goals.Then they should permeate all the above-mentioned into the process of experiment,reform the model and methods and explore the new content from various aspects to cultivate the students'sense,spirit and capability for creativities.Besides,the laboratory should be available for the students' access and liberty to operation.

This paper analyzes current problems in teaching thermology in medical physics.It introduces some ideas for reforming the thermology teaching:reforming traditional structure and system of its contents and improving teaching methods.

It is found that Virtual experiment(VE)can not only improve the experimental condition,enrich the experimental content,but also help to foster the innovation ability of the students. To bring the teaching contribution of VE into full play,it is important to note that VE should be combined with actual experiment and be introduced step by step. Meanwhile,the teach-ing staff should also acquire more learning and further technical skills.