构建大学生党员先进性教育长效机制的实践和思考

保持大学生党员先进性是新时期高校学生党建工作的重大课题。为了构建大学生党员先进性教育长效机制,从思想政治教育、制度建设、党组织活动、社会实践、成才教育、作风建设等方面入手,不断增强大学生党员党性修养,使大学生党员真正树立自身先进性意识,使其成为社会主义事业合格建设者和可靠接班人。     

深圳市院办院管模式下人才培养互动机制的影响因素及对策

目的：分析深圳市院办院管模式下医院与社康中心人才培养互动机制中存在的问题,并针对性提出相关对策,为政府有关部门的决策提供参考。方法：收集2007年深圳市有关人才培养机制的各项政策,并进行社康中心工作人员问卷调查和知情人访谈,在此基础上进行分析。结论：医院与社康中心人才培养互动机制的影响因素很多,应当通过重视人才培养规划、鼓励和吸引人才、多种途径培养人才等方式促进人才培养互动机制的构建。     

29例严重药物不良反应病例分析及其赔偿机制的探讨

目的分析药物不良反应的相关因素,探讨其赔偿机制。方法对2005年1月至2007年12月发生的29例严重药物不良反应病例进行回顾性分析。结果严重药物不良反应发生于各年龄层,21例患者经及时治疗后好转,7例病情加重,1例有后遗症,导致的医疗费用支出平均达8491．95元,支付类别近一半为自费。结论药物不良反应难以避免,在加强监测、保障患者用药安全的同时,亟待建立相应的赔偿机制,以维护患者的利益。     

Gravitational dynamos and the low-frequency geomagnetic secular variation

Self-sustaining numerical dynamos are used to infer the sources of low-frequency secular variation of the geomagnetic field. Gravitational dynamo models powered by compositional convection in an electrically conducting, rotating fluid shell exhibit several regimes of magnetic field behavior with an increasing Rayleigh number of the convection, including nearly steady dipoles, chaotic nonreversing dipoles, and chaotic reversing dipoles. The time average dipole strength and dipolarity of the magnetic field decrease, whereas the dipole variability, average dipole tilt angle, and frequency of polarity reversals increase with Rayleigh number. Chaotic gravitational dynamos have large-amplitude dipole secular variation with maximum power at frequencies corresponding to a few cycles per million years on Earth. Their external magnetic field structure, dipole statistics, low-frequency power spectra, and polarity reversal frequency are comparable to the geomagnetic field. The magnetic variability is driven by the Lorentz force and is characterized by an inverse correlation between dynamo magnetic and kinetic energy fluctuations. A constant energy dissipation theory accounts for this inverse energy correlation, which is shown to produce conditions favorable for dipole drift, polarity reversals, and excursions.     

Recombinant-activated coagulation factor VIIa (NovoSeven): current development

Recombinant activated coagulation factor VII (rFVIIa) was developed initially for treatment of patients with hemophilia and neutralizing antibodies ("inhibitors") to coagulation factors VIII or IX. Owing to the unique and selective mechanism of action of rFVIIa and encouraged by clinical experience with other circumstances of inadequate hemostasis, a broad development program has been pursued to test potential efficacy and evaluate safety of this biologic for indications other than hemophilia. This review summarizes the current development of rFVIIa, focusing on results of prospective, randomized clinical trials.     

Incidental magnetization transfer effects in multislice brain MRI at 3.0T

PURPOSE: To evaluate the effect of incidental magnetization transfer (iMT) in multislice brain imaging at 3.0T. MATERIALS AND METHODS: The contribution of iMT to multislice brain MRI was evaluated at 3.0T. In 10 normal subjects we obtained multislice fast spin-echo (FSE) MR images using a 16-echo pulse train without an off-resonance MT pulse at 3.0T and 1.5T. We quantified the extent of iMT by calculating the iMT ratio (iMTR). RESULTS: We found that the iMT contrast (iMTC) has a greater effect at 3.0T. As the number of slices increased in multislice FSE imaging, the difference between two field strengths became larger. Compared to WM structures, however, the difference in iMT effect between 1.5T and 3.0T was smaller in the case of GM structures. CONCLUSION: The iMTC has a greater effect at 3.0T. The strength of the iMT is different for different tissue types and also varies according to the number of slices used.     

Chaotic phase synchronization and desynchronization in an oscillator network for object selection

Object selection refers to the mechanism of extracting objects of interest while ignoring other objects and background in a given visual scene. It is a fundamental issue for many computer vision and image analysis techniques and it is still a challenging task to artificial visual systems. Chaotic phase synchronization takes place in cases involving almost identical dynamical systems and it means that the phase difference between the systems is kept bounded over the time, while their amplitudes remain chaotic and may be uncorrelated. Instead of complete synchronization, phase synchronization is believed to be a mechanism for neural integration in brain. In this paper, an object selection model is proposed. Oscillators in the network representing the salient object in a given scene are phase synchronized, while no phase synchronization occurs for background objects. In this way, the salient object can be extracted. In this model, a shift mechanism is also introduced to change attention from one object to another. Computer simulations show that the model produces some results similar to those observed in natural vision systems.     

The Associations of Coping Mechanism with Arterial Stiffness in Hwa-Byung Patients

Objective

The goal of this study is to assess the relationship between stress coping mechanisms and the risk of atherosclerosis in patients with Hwa-Byung.

Methods

The Korean version of the Ways of Coping Checklist (WOCC) was administered to 50 patients with Hwa-Byung (49.1±10.1 years, 6 males). Brachial-ankle pulse wave velocity (baPWV) and serum cholesterol level were assessed in all participants.

Results

After controlling for age, sex, diagnosis of hypertension, Body Mass Index (BMI), and serum cholesterol level, the score of seeking social support in coping strategies was negatively correlated with right and left baPWV (r=-0.356, p=0.016; r=-0.373, p=0.012, respectively). In addition, the score of active coping mechanism was negatively correlated with both sides of baPWV (r=-0.383, p=0.009; r=-0.389, p=0.008, respectively).

Conclusion

The seeking social support and active coping mechanism were inversely related to the severity of arterial stiffness in Hwa-Byung patients. Therefore, our result may suggest a possibility that coping strategies in Hwa-Byung patients are associated with the risk of atherosclerosis.