The field of object tracking has recently made significant progress.Particularly,the performance results in both deep learning and correlation filters,based trackers achieved effective tracking performance.Moreover,th...The field of object tracking has recently made significant progress.Particularly,the performance results in both deep learning and correlation filters,based trackers achieved effective tracking performance.Moreover,there are still some difficulties with object tracking for example illumination and deformation(DEF).The precision and accuracy of tracking algorithms suffer from the effects of such occurrences.For this situation,finding a solution is important.This research proposes a new tracking algorithm to handle this problem.The features are extracted by using Modified LeNet-5,and the precision and accuracy are improved by developing the Real-Time Cross-modality Correlation Filtering method(RCCF).In Modified LeNet-5,the visual tracking performance is improved by adjusting the number and size of the convolution kernels in the pooling and convolution layers.The high-level,middle-level,and handcraft features are extracted from the modified LeNet-5 network.The handcraft features are used to determine the specific location of the target because the handcraft features contain more spatial information regarding the visual object.The LeNet features are more suitable for a target appearance change in object tracking.Extensive experiments were conducted by the Object Tracking Benchmarking(OTB)databases like OTB50 and OTB100.The experimental results reveal that the proposed tracker outperforms other state-of-the-art trackers under different problems.The experimental simulation is carried out in python.The overall success rate and precision of the proposed algorithm are 93.8%and 92.5%.The average running frame rate reaches 42 frames per second,which can meet the real-time requirements.展开更多
随着检验医学的高速发展,临床实验室得到了新的诠释,检验科不再仅限于执行标本收集、检验分析、结果报告等技术性工作,而应转变为一个能够为疾病诊疗提供实验室诊断信息的重要诊断科室。其需要积极主动参与到临床疾病的预防、诊断、治...随着检验医学的高速发展,临床实验室得到了新的诠释,检验科不再仅限于执行标本收集、检验分析、结果报告等技术性工作,而应转变为一个能够为疾病诊疗提供实验室诊断信息的重要诊断科室。其需要积极主动参与到临床疾病的预防、诊断、治疗、预后评估等医疗活动中。检验医师作为一支新兴的医疗队伍应运而生,其角色不仅仅是技术执行者,更应充当实验室与临床医疗间的桥梁。在这个背景下,如何更好地进行检验住院医师规范化培训成为亟待解决的重要问题。本文通过对检验住院医师规范化培训内容的分析,探讨了目标与关键成果法(objectives and key results,OKR)在住培中的应用价值和意义。这一方法旨在明确培训的具体目标,并通过关键成果的达成来评估培训的有效性。借助OKR,不仅可以更加精准地设定检验医师培训的目标,而且可以在培训过程中更好地衡量和监控实际的学习成果,能够促进检验医学专业的规范化发展,培养更具综合素养和专业技能的医学人才。展开更多
校核、验证与确认(verification,validation,and accreditation,VV&A)是保证仿真模型可信度的关键手段,其中模型验证是核心环节。针对导弹飞行仿真模型结果验证存在的参考数据不可获得、参考数据来源多样、专家验证主观性强等问题,...校核、验证与确认(verification,validation,and accreditation,VV&A)是保证仿真模型可信度的关键手段,其中模型验证是核心环节。针对导弹飞行仿真模型结果验证存在的参考数据不可获得、参考数据来源多样、专家验证主观性强等问题,提出一种基于时间序列分段特征提取的导弹飞行仿真模型结果验证方法。提出了一种综合的时间序列分段线性方法,由基于二阶导数提取趋势边缘点的线性分段算法和基于极值点优化的Top-Down线性分段算法两部分组成,以实现对导弹飞行仿真数据和参考数据进行有效的线性分段表示。基于上述分段结果,对各段时间序列的均值、方差、斜率等特征进行提取,以辅助专家进行验证,从而降低验证中的主观性;或者直接利用TIC系数法、动态时间规整(dynamic time warping,DTW)等方法进行客观的相似性分析。通过充分利用时间序列的分段特征,可实现各种情形下的导弹飞行仿真模型结果验证。通过一个导弹模型结果验证案例演示了所提方法的可行性和有效性。展开更多
公共部门员工的绩效考核历来是人力资源管理的难点和热点,对于绝大多数公共机构而言,如何提高员工绩效考核指标的科学性和满足员工的个性化发展仍需要进一步研究。文章通过对央行分支机构的青年员工的考核激励现状和存在的问题进行分析...公共部门员工的绩效考核历来是人力资源管理的难点和热点,对于绝大多数公共机构而言,如何提高员工绩效考核指标的科学性和满足员工的个性化发展仍需要进一步研究。文章通过对央行分支机构的青年员工的考核激励现状和存在的问题进行分析,运用目标与关键成果(Objectives and Key Resuits,即OKR)法及积分制管理等人力资源和绩效考核管理方法,针对青年员工特点设计了一套考核激励机制。针对现行考核模式缺乏差异化等问题,借鉴OKR工作法将单位和部门的发展目标层层分解为青年员工个人的工作目标,并对青年员工个人目标完成情况进行积分制管理,按全行青年员工积分排名确定考核等次,将员工考核结果作为绩效工资发放、评奖推优、提拔晋升等方面的重要参考。运用这一考核激励机制,能有效提高青年员工的积极性,营造比学赶超、奋勇争先的良好创业干事氛围。展开更多
China’s Chang’E-4 probe successfully landed on 3 January 2019 in Von Kármán crater within the South Pole-Aitken(SPA)basin on the lunar far side.Based on the data acquired by the scientific payloads onboard...China’s Chang’E-4 probe successfully landed on 3 January 2019 in Von Kármán crater within the South Pole-Aitken(SPA)basin on the lunar far side.Based on the data acquired by the scientific payloads onboard the lander and the rover,the researchers obtained the related information such as the geologic and tectonic setting of the landing area,compositional characteristics of the landing surface materials,dielectric permittivity and density of the lunar soil.The experiments confirmed the existence of materials dominated by olivine and low-calcium pyroxene in the SPA basin on the lunar far side,which preliminary revealed the geological evolution history of the SPA basin and even that of the early time lunar crust,as well as the tectonic setting and formation mechanism of the materials in the lunar interior.The researchers also investigated the particle radiation,Linear Energy Transaction(LET)spectrum,and so forth on the lunar surface.The low-frequency radio observations were carried out on the lunar far side for the first time as well.This article summarizes the latest scientific results in the past years,focusing on the Chang’E-4 mission.展开更多
急危重症资源供不应求的矛盾日益突出,严重影响急危重症患者的医疗质量和医疗安全。如何提升急危重症平台运行效率是亟待解决的问题。自2020年起北京大学第三医院借助目标与关键成果(Objectives and key results,OKR)法管理工具,提升急...急危重症资源供不应求的矛盾日益突出,严重影响急危重症患者的医疗质量和医疗安全。如何提升急危重症平台运行效率是亟待解决的问题。自2020年起北京大学第三医院借助目标与关键成果(Objectives and key results,OKR)法管理工具,提升急危重症平台运行效率,实现急危重症接诊量10%~20%年增幅,同时滞留情况明显改善,急危重症抢救成功率显著提高,为大型综合医院提供可借鉴的范式。展开更多
The world is facing a once-in-a-lifetime situation:the COVID-19 pandemic.During the pandemic,the World Health Organization announced an infodemic as well.This infodemic caused infollution and sparked many controversie...The world is facing a once-in-a-lifetime situation:the COVID-19 pandemic.During the pandemic,the World Health Organization announced an infodemic as well.This infodemic caused infollution and sparked many controversies.Pandemics as extraordinary occurrences are always attractive to historians.However,infodemics and biased information threaten objective history-writing.Objectivity as it regards historians is already a much-discussed subject.In this commentary,the fundamental theories about objectivity are delineated.Second,the relationship between the infodemic and COVID-19 pandemic is explained.Lastly,the problems regarding objectivity in the historiography of the COVID-19 pandemic are explored.展开更多
文摘The field of object tracking has recently made significant progress.Particularly,the performance results in both deep learning and correlation filters,based trackers achieved effective tracking performance.Moreover,there are still some difficulties with object tracking for example illumination and deformation(DEF).The precision and accuracy of tracking algorithms suffer from the effects of such occurrences.For this situation,finding a solution is important.This research proposes a new tracking algorithm to handle this problem.The features are extracted by using Modified LeNet-5,and the precision and accuracy are improved by developing the Real-Time Cross-modality Correlation Filtering method(RCCF).In Modified LeNet-5,the visual tracking performance is improved by adjusting the number and size of the convolution kernels in the pooling and convolution layers.The high-level,middle-level,and handcraft features are extracted from the modified LeNet-5 network.The handcraft features are used to determine the specific location of the target because the handcraft features contain more spatial information regarding the visual object.The LeNet features are more suitable for a target appearance change in object tracking.Extensive experiments were conducted by the Object Tracking Benchmarking(OTB)databases like OTB50 and OTB100.The experimental results reveal that the proposed tracker outperforms other state-of-the-art trackers under different problems.The experimental simulation is carried out in python.The overall success rate and precision of the proposed algorithm are 93.8%and 92.5%.The average running frame rate reaches 42 frames per second,which can meet the real-time requirements.
文摘随着检验医学的高速发展,临床实验室得到了新的诠释,检验科不再仅限于执行标本收集、检验分析、结果报告等技术性工作,而应转变为一个能够为疾病诊疗提供实验室诊断信息的重要诊断科室。其需要积极主动参与到临床疾病的预防、诊断、治疗、预后评估等医疗活动中。检验医师作为一支新兴的医疗队伍应运而生,其角色不仅仅是技术执行者,更应充当实验室与临床医疗间的桥梁。在这个背景下,如何更好地进行检验住院医师规范化培训成为亟待解决的重要问题。本文通过对检验住院医师规范化培训内容的分析,探讨了目标与关键成果法(objectives and key results,OKR)在住培中的应用价值和意义。这一方法旨在明确培训的具体目标,并通过关键成果的达成来评估培训的有效性。借助OKR,不仅可以更加精准地设定检验医师培训的目标,而且可以在培训过程中更好地衡量和监控实际的学习成果,能够促进检验医学专业的规范化发展,培养更具综合素养和专业技能的医学人才。
文摘校核、验证与确认(verification,validation,and accreditation,VV&A)是保证仿真模型可信度的关键手段,其中模型验证是核心环节。针对导弹飞行仿真模型结果验证存在的参考数据不可获得、参考数据来源多样、专家验证主观性强等问题,提出一种基于时间序列分段特征提取的导弹飞行仿真模型结果验证方法。提出了一种综合的时间序列分段线性方法,由基于二阶导数提取趋势边缘点的线性分段算法和基于极值点优化的Top-Down线性分段算法两部分组成,以实现对导弹飞行仿真数据和参考数据进行有效的线性分段表示。基于上述分段结果,对各段时间序列的均值、方差、斜率等特征进行提取,以辅助专家进行验证,从而降低验证中的主观性;或者直接利用TIC系数法、动态时间规整(dynamic time warping,DTW)等方法进行客观的相似性分析。通过充分利用时间序列的分段特征,可实现各种情形下的导弹飞行仿真模型结果验证。通过一个导弹模型结果验证案例演示了所提方法的可行性和有效性。
文摘公共部门员工的绩效考核历来是人力资源管理的难点和热点,对于绝大多数公共机构而言,如何提高员工绩效考核指标的科学性和满足员工的个性化发展仍需要进一步研究。文章通过对央行分支机构的青年员工的考核激励现状和存在的问题进行分析,运用目标与关键成果(Objectives and Key Resuits,即OKR)法及积分制管理等人力资源和绩效考核管理方法,针对青年员工特点设计了一套考核激励机制。针对现行考核模式缺乏差异化等问题,借鉴OKR工作法将单位和部门的发展目标层层分解为青年员工个人的工作目标,并对青年员工个人目标完成情况进行积分制管理,按全行青年员工积分排名确定考核等次,将员工考核结果作为绩效工资发放、评奖推优、提拔晋升等方面的重要参考。运用这一考核激励机制,能有效提高青年员工的积极性,营造比学赶超、奋勇争先的良好创业干事氛围。
基金Supported by National Key R&D Program of China(2020YFE0202100)Beijing Municipal Science and Technology Commission(Z181100002918003)。
文摘China’s Chang’E-4 probe successfully landed on 3 January 2019 in Von Kármán crater within the South Pole-Aitken(SPA)basin on the lunar far side.Based on the data acquired by the scientific payloads onboard the lander and the rover,the researchers obtained the related information such as the geologic and tectonic setting of the landing area,compositional characteristics of the landing surface materials,dielectric permittivity and density of the lunar soil.The experiments confirmed the existence of materials dominated by olivine and low-calcium pyroxene in the SPA basin on the lunar far side,which preliminary revealed the geological evolution history of the SPA basin and even that of the early time lunar crust,as well as the tectonic setting and formation mechanism of the materials in the lunar interior.The researchers also investigated the particle radiation,Linear Energy Transaction(LET)spectrum,and so forth on the lunar surface.The low-frequency radio observations were carried out on the lunar far side for the first time as well.This article summarizes the latest scientific results in the past years,focusing on the Chang’E-4 mission.
文摘急危重症资源供不应求的矛盾日益突出,严重影响急危重症患者的医疗质量和医疗安全。如何提升急危重症平台运行效率是亟待解决的问题。自2020年起北京大学第三医院借助目标与关键成果(Objectives and key results,OKR)法管理工具,提升急危重症平台运行效率,实现急危重症接诊量10%~20%年增幅,同时滞留情况明显改善,急危重症抢救成功率显著提高,为大型综合医院提供可借鉴的范式。
文摘The world is facing a once-in-a-lifetime situation:the COVID-19 pandemic.During the pandemic,the World Health Organization announced an infodemic as well.This infodemic caused infollution and sparked many controversies.Pandemics as extraordinary occurrences are always attractive to historians.However,infodemics and biased information threaten objective history-writing.Objectivity as it regards historians is already a much-discussed subject.In this commentary,the fundamental theories about objectivity are delineated.Second,the relationship between the infodemic and COVID-19 pandemic is explained.Lastly,the problems regarding objectivity in the historiography of the COVID-19 pandemic are explored.
