国内旅游专题数据库建设情况调查与分析

随着国内旅游业的快速发展,旅游专题数据库的建设日益引起业界关注,本文调查分析了国内旅游专题数据库的建设现状,并从统一规划、协调发展;联合建设,提高数据库共享度;数据库选题及框架搭建;充分发挥高校图书馆的优势四个方面阐述了应采取的措施。     

众包对图书馆的影响及其运用

众包理念和模式在图书馆领域的运用,将影响图书馆学理论架构,促进图书馆学理论创新;重新界定图书馆的组织边界,促进图书馆制度创新;打破图书馆专业化的门槛,促进图书馆技术和业务流程的创新。图书馆应充分借鉴众包的优势,鼓励大众进行知识交流与创新,加强图书馆文献资源建设的针对性,提高图书馆文献揭示与读者检索的一致性,推动图书馆资源和网络信息的开发与利用,促进图书馆知识交流。     

对“两课”教学改革的思考

“两课”教学的加强与改进,对全面提高学生的科学文化和思想道德素质具有重要的作用。本文主要以“三进”和素质教育原则为依据,对学校“两课”教育提出了改进意见。     

郎平女儿“小铁榔头”

"美国甜心儿"2008年北京奥运会召开前夕,郎平的女儿白浪从美国回到北京,同北京女排在一起训练,笔者闻讯后几经联络,最终对这个在美国长大、媒体鲜见报道的神秘女孩进行了采访。在北京南城的一条小胡同里,我     

Prevalence and correlates of meeting the muscle-strengthening exercise recommendations among Chinese children and adolescents: Results from 2019 Physical Activity and Fitness in China—The Youth Study

PurposeThis study aimed to describe the national prevalence of Chinese children and adolescents who met the World Health Organization muscle-strengthening exercise (MSE) recommendations and identify correlates of meeting the MSE recommendations.MethodsCross-sectional data from the 2019 Physical Activity and Fitness in China—The Youth Study, a nationally representative sample of Chinese children and adolescents (n = 80,413; mean age = 13.7 years; 53.9% girls) and their parents, were analyzed. Children and adolescents who reported engaging ≥3 days (up to 7 days) of MSE per week were classified as meeting the MSE recommendations. MSE, demographics, lifestyle behaviors (sport participation, moderate-to-vigorous physical activity, screen time, and sleep duration), exercise intention, peer and parental support, and parental MSE participation were assessed through self-reports. Logistic regression models were used to determine the correlates of meeting the MSE recommendations. The analyses were completed in 2020.ResultsOverall, 39.3% of children and adolescents met the MSE recommendations. Girls, 10th–12th graders, minorities, those from lower income households and those from families with lower parental education were less likely to meet the MSE recommendations. Children and adolescents who were proficient in ≥2 sports were more likely to meet the MSE recommendations (adjusted odds ratio (aOR) = 1.44, 95% confidence interval (95%CI): 1.26–1.65), as were those with more moderate-to-vigorous physical activity (aOR = 1.57, 95%CI: 1.53–1.61). Additionally, children and adolescents with high exercise intention (aOR = 1.60, 95%CI: 1.51–1.69), those whose parents met the adult MSE recommendations (aOR = 1.46, 95%CI: 1.40–1.52), and those who received high peer (aOR = 1.27, 95%CI: 1.20–1.34) and parental support (aOR = 1.07, 95%CI: 1.04–1.12) were more likely to meet the MSE recommendations.ConclusionLess than two-fifths of Chinese children and adolescents met the World Health Organization MSE recommendations. The correlates identified in our study can help inform the development of school and community based strategies and policies to enhance participation in MSE and improve muscular fitness of all Chinese children and adolescents.     

协同育人模式在高校应用型人才培养改革应用分析

在知识经济的时代背景下,企业和社会对综合型人才的需求量越来越大,单一型技术人才已经不能满足企业生产和发展需要,对于学生的思想素质、道德水平、实践能力、应用能力等有了更高的要求。各所高校面临在应用型人才培养的同时教书育人的方向需要转型的问题,从这一层面来讲,协同育人模式在高校教育机制中具有重要的发展地位。基于此,展开以下论述,从协同育人的相关概述入手,探析其在高校人才培养改革背景下的具体应用策略,希望能为广大高校老师带来实践参考和理论思考。     

Cobalt-Based Cocatalysts for Photocatalytic CO2 Reduction

Conversion of carbon dioxide(CO₂) into valuable chemicals and renewable fuels via photocatalysis represents an eco-friendly route to achieve the goal of carbon neutralization.Although various types of semiconductor materials have been intensively explored,some severe issues,such as rapid charge recombination and sluggish redox reaction kinetics,remain.In this regard,cocatalyst modification by trapping charges and boosting surface reactions is one of the most efficient strategies to im...     

建立以科技查新为基础的高校图书馆学科馆员制度初探

文章提出了在高校图书馆中建立以科技查新为基础的学科馆员制度的初步构想,并从工作人员、服务对象、专业基础三方面分析了该构想的客观优势,提出了建立该制度的可行性建议。     

急性运动降低感染风险的免疫调节机制

由于新型冠状病毒(2019-nCoV)感染的肺炎疫情暴发,人们将居家运动作为提高免疫力与保持健康的重要手段,运动与免疫的关系再度受到关注。一般认为,在充分恢复的前提下进行规律的中高强度运动可提高免疫功能,而急性运动(acute exercise)可能抑制免疫功能并增加感染风险。急性运动后外周血淋巴细胞计数及功能降低、免疫球蛋白A水平分泌减少被认为是运动抑制免疫的理论基础。但目前这种独立于非运动因素影响免疫功能增加感染风险的认识受到了现有研究的挑战。急性运动可通过应激反应将淋巴细胞亚群迅速动员至循环中,运动结束后,淋巴细胞亚群又会迅速迁移至外周组织。淋巴细胞的重新分布(lymphocyte redeployment)可能是一种进化保守的免疫机制,这一过程强化了外周组织的免疫监视与调节功能,有助于提升机体抵抗感染能力。因此,从这一视角就急性运动对机会性感染风险及免疫功能影响的现状进行综述。     

论李白诗文中“鲲鹏”和“风凰”的儒道意义世界

从李白的诗文创作来看，“鲲鹏”和“凤凰”的意义世界有两方面的内涵，即挣脱世俗羁绊追求身心自由的生命个性和渴望建功立业和济时用世的进取精神。李白思想的复杂性以及盛唐社会的时代背景决定了“鲲鹏”和“凤凰”意义世界这两个内涵时立统一的可能性。