Edge-detecting operator-based selection of Huber regularization threshold for low-dose computed tomography imaging / 南方医科大学学报

<p><b>OBJECTIVE</b>To compare two methods for threshold selection in Huber regularization for low-dose computed tomography imaging.</p><p><b>METHODS</b>Huber regularization-based iterative reconstruction (IR) approach was adopted for low-dose CT image reconstruction and the threshold of Huber regularization was selected based on global versus local edge-detecting operators.</p><p><b>RESULTS</b>The experimental results on the simulation data demonstrated that both of the two threshold selection methods in Huber regularization could yield remarkable gains in terms of noise suppression and artifact removal.</p><p><b>CONCLUSION</b>Both of the two methods for threshold selection in Huber regularization can yield high-quality images in low-dose CT image iterative reconstruction.</p>

Analysis of the impact factors of medical graduates' basic units employment / 中华医学教育探索杂志

ObjectiveTo explore the impact factors of medical graduates being employed at grass roots. Analysis may contribute to the adjustment and improvement of control policy. Methods1,000 students in Guangzhou Medical University were randomly sampled, and 946 valid questionnaires were being collected. Factor Analysis was adopted to extract component. Extraction method was Principal Component Analysis and rotated component.Components were used as independent variables in the Logistic Regression. The variable Y ( Willing to be employed at Grass Roots or not ) as the dependent variable. Adopted Logistic Regression analysis was made to explore impact factors of medical Graduates employed at Grass Roots. ResultsAccording to the Eigenvalues and Rotation Sums of Squared Loadings, 5 Components were extracted. The sorted descending is 'for grass-roots development', 'basic working conditions and benefits','the parent's attitude towards my career development' and 'family economic conditions'. ConclusionImpact factors can be reflected more objectively by using factor analysis elimination co-linearity in the original variables.

Construction of High-level Assistant Team by Emphasizing System / 中华医学教育探索杂志

Strengthening assistant team is the important guarantee and effective mechanism to enhance and improve the mental and political education of college students and to maintain the stability of university.The article,through analyzing the status quo of building assistant team,puts forward pertinently some thoughts on the priority of system and construction of high-level staff of assistants.

Study of the characteristics of the ideological and political behavior of contemporary university students / 中华医学教育探索杂志

The contemporary university students as a special political groups,can have a significant impact on social and political life. Comprehensive understanding of the ideological and political behavior of contemporary college students is to study the characteristics of the ideological and political behavior of college students. The study has found that the ideological and political behavior of contemporary college students shows the following main features such as the rationality of ideological and political behavior,confusion and utilitarian,as well as the diversity of political participation means.