Student

摘要： Objective:The study aimed to determine the faculty of the health sciences students’knowledge and attitudes regarding the coronavirus disease 2019(COVID-19)pandemic.Materials and Methods:This cross-sectional survey was completed with 317 undergraduate students of one health sciences faculty in Turkey.The data were collected between March 1,2020,and March 15,2020,by face-to-face interviews using a questionnaire created by the researchers.Number,percentage,mean,standard deviation,and Pearson Chi-square test were used to evaluate the data.Results:In this study,a high proportion of students answered questions about COVID-19 correctly.About 55.8%of the students took partial precautions against COVID-19 to protect themselves against COVID-19 and“frequent washing of hands”was the most common precaution.We determined that the main reasons for not taking any precautions against COVID-19 were“low number of cases in Turkey”and“getting irritated by the mask.”About 98.4%of the participants were entirely/partially following the news on COVID-19,with social media being the most commonly used medium.Female students took more protective measures than male students.The 1st-year students had more positive thoughts about vaccination compared to those in the other classes.Conclusions:Although the knowledge of the students about COVID-19 was good in the first wave of the pandemic,more than half of the students stated that they partially complied with the protective measures.

摘要： Introduction: Sleep disorders are an important public health problem. In the case of young people, and especially students, due to both academic demands and social life, many situations can lead to sleep disturbances. Aim: To evaluate the quality of sleep in medical students and its relationships with technology addiction. Background: Current research indicates that the technology usage by the university students determined an impaired sleep quality and a shortened sleep duration. Method: One hundred eleven second-year students attending medical education were included in the study. Its dependent variable was low sleep quality and independent variables were behavioral factors, smartphone addiction, computer usage, watching TV and other questioned features. A sleep questionnaire to assess the sleep quality in medical students was provided to medical students. This study was conducted in the University of Medicine and Pharmacy of Iasi, Romania. Results: The majority of medical students had shorter, irregular sleep duration and consumed energizing and stimulating drinks. Conclusions: In COVID-19 pandemic, the students’ tech addiction associated with the behavioral factors was found as risk factors for poor sleep quality.

摘要： Teacher:Would Shakespeare be a great man if he were still alive today?Student:Of course.He must be a great man,for so far nobody has lived to over 400 years.

摘要： Teacher:Can you make a sentence with the word“egg”?Student:Yes.I ate a piece of cake yesterday.Teacher:Then where is the“egg”?Student:In the cake,Sir.

摘要： The Asia-Pacific Geophysics Student Conference(APGSC 2020)is the first student-led and student-organized international geophysics conference in the Asia-Pacific region.The theme of APGSC is"Bridging the Gap between Exploration and Solid-Earth Geophysics".This conference is designed to provide a platform for gathering students with different geophysical backgrounds to exchange ideas,show research results,and explore the frontiers of geophysics and related fields.Students could better understand current and future developments of geophysics and build a bridge between exploration and solid-earth geophysics.The 1st Asia Pacific Geophysical Student Conference(APGSC 2020)is successfully held online on September 6-9,2020 Beijing time.This conference is hosted by the University of Science and Technology of China(USTC)and the Society of Exploration Geophysicists(SEG).More than 30 universities and scientific research institutions at home and abroad give strong support as co-organizers.The academic committee of the conference is composed of more than 50 experts and scholars.

摘要： Teacher:How many feet(脚;英尺)are there in a yard(院子;码)?Student:It depends.If there are 3 people,then we have six feet!

摘要： The goal of our study was to find out which school experiences are considered meaningful by 7th and 8th graders in basic schools,which have a reputation as being“happy schools.”The research method used was an open-ended questionnaire to students which focused on their learning experiences,and as background knowledge,observing lessons and interviews with student focus groups.A total of 139 students participated in the study,Grades 7 and 8;73 boys and 66 girls;and aged 13-15 years.The findings of the learning experiences that students found meaningful and important were school subjects,self-appropriate skills,general knowledge,and skills necessary for life.Three sub-themes emerged in students’learning experiences related to their personal development:social skills,self-related skills,and mental skills.The overwhelming majority of students found that their school is generally a good place to learn important things.Two thirds of students deemed their school a good place,while negative aspects were mentioned by one third of students.That the school is completely bad was expressed by 12 students.We conclude that,for students,significant learning experience is primarily related to learning a variety of subjects and general knowledge necessary for life.At the same time,the acquisition of self-appropriate skills is also considered important.In contrast with students’general perception of heavy study loads,boredom,bullying,and other negative experiences,the students expressed a warm and positive attitude towards their school.

摘要： Innovative research projects are especially suited for supporting talents by bringing them into close contact with state-of-the-art research and development in the area of science,technology,engineering,and mathematics(STEM).A stimulating project with clearly defined objective groups of gifted school students can raise their limits of previous knowledge.By means of self-structured team action they are enabled to conduct targeted research and develop a defined innovative result—A product.This paper presents two practical examples of aerospace-related school student research projects,namely,the“TALNET Robotics-Dart Contest”with Charles University Prague and the Hector Seminar Project“Galileo Simulator,”including their basic conception,organizational conditions,and the essential aspects of planning and implementation.The supporting and stimulating role of teachers,university students and scientists is emphasized,especially by initiating a creative project idea and by structuring the project in an adequate way:Due to the great importance of creativity for all phases of such projects,the basic concepts of creativity and giftedness are addressed.Furthermore,it is demonstrated that project-based learning(PBL)provides a suitable concept for such complex research activities.

摘要： Hello,everyone.My name is Tong Chenjie. I am twelve years old.I am a student in Grade four.My hobby is drawing pictures.Every Sunday afternoon I have a drawing lesson. Sometimes I go to the park with my friends to paint.I have been learning to draw for aboutsix years,and I''m really good at sketching.I have won a lot of awards and certificates in drawing.In the future I hope I can be an artist.

摘要： Middle and senior high school's student is the persons who could be molded in the construction ofmodernization；they are taking on historical burden of national great revival. Having strong body is the basicrequire for each builder and successor in the future. Talent of social construction in the future should havehigh qualities of thought &moral, scientism &culture, psychology and healthy body. While quality of healthybody is the basic condition of several qualities ahead. Students' physical health involves the future of ourcountry and vicissitude of our nation. This text introduces the situation of students' physical healthy in Hebeiprovince in detail, list and analyze its reasons, and also put forward countermeasures.

摘要： 本发明涉及一种基于截断Dirichlet过程无限Student’s t混合模型的脑部核磁共振图像分割方法，基于Dirichlet过程无限Student’s t混合模型，将无限Student’s t混合模型中的分量数假设为预设的图像的分割数K，然后利用期望最大化算法对模型进行求解，再利用贝叶斯最大后验概率准则进行图像分割。本发明所述的方法中，假设的Student’s t混合模型直接对应到脑部核磁共振图像不同的部分，而且Student’s t分布的高尾部特性决定了模型有较好的抗噪效果，从而实现脑部核磁共振图像分割。求解Dirichlet过程无限Student’s t混合模型的过程中，本发明用简单高效的期望最大化算法对基于截断Dirichlet过程无限Student’s t混合模型进行求解，使模型的求解变得更易实现。本发明的实施，能够在PC端对一幅脑部核磁共振图像快速自动地进行分割。

摘要： 本发明公开了一种基于半监督贝叶斯正则化混合Student’s t模型的鲁棒软测量方法，属于工业过程预测和控制技术领域。该方法在有监督混合Student’s t模型的基础上，设计了半监督的混合Student’s t模型结构，并将质量变量和辅助变量之间的回归系数贝叶斯化，通过变分贝叶斯期望最大化算法来更新模型参数，进而实现软测量模型的建立。本发明不仅能够有效的解决有标签样本稀少导致的软测量建模不准的问题，还能够在一定程度上缓解了过拟合，提高了模型的预测精度。

摘要： 本发明涉及一种基于截断Dirichlet过程无限Student’s t混合模型的脑部核磁共振图像分割方法，基于Dirichlet过程无限Student’s t混合模型，将无限Student’s t混合模型中的分量数假设为预设的图像的分割数K，然后利用期望最大化算法对模型进行求解，再利用贝叶斯最大后验概率准则进行图像分割。本发明所述的方法中，假设的Student’s t混合模型直接对应到脑部核磁共振图像不同的部分，而且Student’s t分布的高尾部特性决定了模型有较好的抗噪效果，从而实现脑部核磁共振图像分割。求解Dirichlet过程无限Student’s t混合模型的过程中，本发明用简单高效的期望最大化算法对基于截断Dirichlet过程无限Student’s t混合模型进行求解，使模型的求解变得更易实现。本发明的实施，能够在PC端对一幅脑部核磁共振图像快速自动地进行分割。

摘要： 本发明公开了一种基于teacher‑student代理模型的卫星组件温度场预测方法，包括：建立卫星组件布局的结构模型；生成多个第一训练数据和若干个第二训练数据；构建teacher‑student深度代理模型；利用第二训练数据对teacher模型进行训练，利用已训练的teacher模型预测第一训练数据中的卫星组件布局对应的温度场；利用第一训练数据及第一训练数据对应的温度场和第二训练数据对student模型进行训练；将已训练的student模型作为温度场预测模型以进行卫星组件布局的温度场预测。本发明的方法通过利用teacher模型指导student模型的训练，能够利用大量不带标记的训练样本和少量带标记的训练样本实现深度代理模型的有效训练，实现卫星组件布局温度场的精确预测，能够节省计算资源，降低设计成本，缩短设计周期。

摘要： 提供了基于teacher‑student模型的半监督目标检测方法。包括以下步骤：获取半监督目标检测数据集D；在有标注数据集D

摘要： 本发明公开了一种基于teacher‑student代理模型的卫星组件温度场预测方法，包括：建立卫星组件布局的结构模型；生成多个第一训练数据和若干个第二训练数据；构建teacher‑student深度代理模型；利用第二训练数据对teacher模型进行训练，利用已训练的teacher模型预测第一训练数据中的卫星组件布局对应的温度场；利用第一训练数据及第一训练数据对应的温度场和第二训练数据对student模型进行训练；将已训练的student模型作为温度场预测模型以进行卫星组件布局的温度场预测。本发明的方法通过利用teacher模型指导student模型的训练，能够利用大量不带标记的训练样本和少量带标记的训练样本实现深度代理模型的有效训练，实现卫星组件布局温度场的精确预测，能够节省计算资源，降低设计成本，缩短设计周期。

摘要： 本发明公开了一种基于student‑t分布的脸部配准方法，该方法建立student‑t分布模型，选择模型个数，采用student‑t分布模型对脸部点云进行数据分布拟合得到初始参数；通过梯度下降法对初始参数迭代更新，利用刚体几何变换求解起始旋转矩阵，再利用三对脸部数据中心的均值和起始旋转矩阵求解起始平移向量；对待配准点云协方差矩阵做降噪处理，运用优化函数求得最终旋转矩阵，通过三对脸部数据中心的均值和最终旋转矩阵求解最终平移向量；运用最终旋转矩阵、最终平移向量、两脸部点云之间的关系式实现脸部配准识别。通过上述方案，本发明达到了提高人脸识别效率的目的，具有很高的实用价值和推广价值。