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Social media and mobility landscape: Uncovering spatial patterns of urban human mobility with multi source

Yilan Cui, Xing Xie, Yi Liu

《环境科学与工程前沿（英文）》 2018年 第12卷 第5期 doi: 10.1007/s11783-018-1068-1

摘要：

Check-in and survey data are explored to identify personal activity-specific places.

Ways for detecting and moderating sample bias of Weibo check-in data is proposed.

A graphic representation of urban activity intensity in Beijing, China is presented.

The potential application of Weibo check-in data for urban analysis is introduced.

关键词： Social media     Human mobility     Population bias     Sample reconstruction     Data integration    

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On the potential of iPhone significant location data to characterize individual mobility for air pollution

《环境科学与工程前沿（英文）》 2022年 第16卷 第5期 doi: 10.1007/s11783-022-1542-7

摘要：

● We evaluated the accuracy of iPhone data in capturing time-activity patterns.

关键词： Air pollution exposure     Human mobility     iPhone     Significant Location     Smartphone data    

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以人为本的城市交通：一种设计和完善城市交通基础设施的新方法 Views & Comments

Dervilla Mitchell, Susan Claris, David Edge

《工程（英文）》 2016年 第2卷 第1期   页码 33-36 doi: 10.1016/J.ENG.2016.01.030

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A visual graphic approach for mobility analysis of parallel mechanisms

Xu PEI, Jingjun YU

《机械工程前沿（英文）》 2011年 第6卷 第1期   页码 92-95 doi: 10.1007/s11465-011-0213-3

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微观移动协议主动切换机制研究

赵阿群

《中国工程科学》 2004年 第6卷 第8期   页码 50-56

摘要：

针对微观移动协议现有切换机制的缺点，提出了主动切换机制，利用移动预测技术，在切换发生前预测移动主机将要切换的下一蜂窝以及切换的时刻，为移动主机预先建立新路径；为了保证主动切换机制的实现，提出了一个适用于主动切换机制并易于实现的移动预测算法；同时还提出了主动切换过程中分组丢失和重复避免方法；通过理论分析和系统仿真的方法对主动切换机制进行了性能评价，结果表明主动切换机制以较小的代价获得了可观的性能改善。

关键词： 微观移动协议     主动切换机制     移动预测     性能评价    

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Analysis of the kinematic characteristics of a high-speed parallel robot with Schönflies motion: Mobility

Fugui XIE,Xin-Jun LIU

《机械工程前沿（英文）》 2016年 第11卷 第2期   页码 135-143 doi: 10.1007/s11465-016-0389-7

摘要：

This study introduces a high-speed parallel robot with Schönflies motion. This robot exhibits a promising prospect in realizing high-speed pick-and-place manipulation for packaging production lines. The robot has four identical limbs and a single platform. Its compact structure and single-platform concept provides this robot with good dynamic response potential. A line graph method based on Grassmann line geometry is used to investigate the mobility characteristics of the proposed robot. A generalized Blanding rule is also introduced into this procedure to realize mutual conversion between the line graphs for motions and constraints. Subsequently, the inverse kinematics is derived, and the singularity issue of the robot is investigated using both qualitative and quantitative approaches. Input and output transmission singularity indices are defined based on the reciprocal product in screw theory and the virtual coefficient by considering motion/force transmission performance. Thereafter, the singular loci of the proposed robot with specific geometric parameters are derived. The mobility analysis, inverse kinematics modeling, and singularity analysis conducted in this study are helpful in developing the robot.

关键词： parallel robot     mobility     inverse kinematics     singularity     transmission performance    

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Erratum to: On the potential of iPhone significant location data to characterize individual mobility

《环境科学与工程前沿（英文）》 2022年 第16卷 第9期 doi: 10.1007/s11783-022-1556-1

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PM-support interfacial effect and oxygen mobility in Pt, Pd or Rh-loaded (Ce,Zr,La)O catalysts

《环境科学与工程前沿（英文）》 2021年 第15卷 第4期 doi: 10.1007/s11783-020-1369-z

摘要：

• Pt/CZL exhibits the optimum catalytic performance for HC and NOx elimination.

关键词： Precious metal-loaded (Ce     Zr     La)O2 catalysts     Oxygen mobility     Catalytic performance    

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Microbial responses to the use of NaClO in sediment treatment

《环境科学与工程前沿（英文）》 2022年 第16卷 第2期 doi: 10.1007/s11783-021-1451-1

摘要：

• Chlorine addition enhanced the release of TOC, TN from the sediment.

关键词： Sediment chlorination     Substance mobility     Microbial response     Community composition     Function    

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Challenges of human–machine collaboration in risky decision-making

《工程管理前沿（英文）》 2022年 第9卷 第1期   页码 89-103 doi: 10.1007/s42524-021-0182-0

摘要： The purpose of this paper is to delineate the research challenges of human–machine collaboration in risky decision-making. Technological advances in machine intelligence have enabled a growing number of applications in human–machine collaborative decision-making. Therefore, it is desirable to achieve superior performance by fully leveraging human and machine capabilities. In risky decision-making, a human decision-maker is vulnerable to cognitive biases when judging the possible outcomes of a risky event, whereas a machine decision-maker cannot handle new and dynamic contexts with incomplete information well. We first summarize features of risky decision-making and possible biases of human decision-makers therein. Then, we argue the necessity and urgency of advancing human–machine collaboration in risky decision-making. Afterward, we review the literature on human–machine collaboration in a general decision context, from the perspectives of human–machine organization, relationship, and collaboration. Lastly, we propose challenges of enhancing human–machine communication and teamwork in risky decision-making, followed by future research avenues.

关键词： human–machine collaboration     risky decision-making     human–machine team and interaction     task allocation     human–machine relationship    

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面向未来智慧城市的汽车共享出行发展战略

陈轶嵩,赵俊玮,刘永涛

《中国工程科学》 2019年 第21卷 第3期   页码 114-121 doi: 10.15302/J-SSCAE-2019.03.009

摘要：

本文分析了当前汽车共享出行的发展环境、发展趋势与发展机遇，梳理了汽车共享出行与智慧城市之间的共生关系。对我国汽车共享出行的典型发展模式进行分析、实践经验进行总结，从新技术、新需求以及新模式三个维度阐述了汽车共享出行发展的新理念。在此基础上，提出了我国汽车共享出行创新发展的五种典型路径，基于发展路径对我国未来智慧城市汽车共享出行生态进行了构想。

关键词： 智慧城市     共享出行     发展模式     路径分析     生态构想    

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城市按需空中交通的综合网络设计与需求预测 Article

吴志强, 张瑜

《工程（英文）》 2021年 第7卷 第4期   页码 473-487 doi: 10.1016/j.eng.2020.11.007

摘要：

城市空中交通（UAM）是近年来提出的使用电动垂直起降飞行器（eVTOL）的新兴概念。UAM通过利用低空空域有望为城市地区的乘客和货物运输提供另一种选择，显著提高机动性。除了其他基本要素外，还需要垂直起降机场等地面基础设施来实现UAM从概念到运行的跨越。本研究探讨了UAM按需服务的网络设计，在考虑垂直起降机场的位置和潜在的UAM需求之间相互作用的同时，重点强调使用整数规划和求解算法来确定垂直起降机场的最佳位置、用户分配以及进出模式的选择。一个基于美国佛罗里达州坦帕湾地区模拟分解交通需求数据的案例研究验证了该模型的有效性。通过分析基于佛罗里达州的激光雷达数据和eVTOL运行的自身约束和监管约束下开发出的3D地理信息系统（GIS）地图，我们获得了备选垂直起降机场的位置。垂直起降机场最佳位置的选择以总成本最小为目标，但同时该模型结构允许每个用户根据广义费用在地面运输和UAM之间选择更好的模式。案例研究的结果显示，虽然从地面模式切换到多式联运的行程比重很小，但选择UAM服务的用户明显节省了时间。此外，本文从供应方面探讨了不同参数设置对UAM服务需求的影响，并测试了不同的定价策略对UAM的需求和利润之间的影响。同时分析了垂直起降机场数量与定价策略的综合效应。研究结果为城市决策者和UAM运营商提供了深入的规划和管理意见。本文的结论部分讨论了该研究的注意事项、作者正在进行的工作以及UAM的未来研究方向。

关键词： 先进空中交通     楼顶停机坪     交通方式的选择     低空空域     无人驾驶系统    

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Zooming in and out of ferroptosis in human disease

《医学前沿（英文）》 2023年 第17卷 第2期   页码 173-206 doi: 10.1007/s11684-023-0992-z

摘要： Ferroptosis is defined as an iron-dependent regulated form of cell death driven by lipid peroxidation. In the past decade, it has been implicated in the pathogenesis of various diseases that together involve almost every organ of the body, including various cancers, neurodegenerative diseases, cardiovascular diseases, lung diseases, liver diseases, kidney diseases, endocrine metabolic diseases, iron-overload-related diseases, orthopedic diseases and autoimmune diseases. Understanding the underlying molecular mechanisms of ferroptosis and its regulatory pathways could provide additional strategies for the management of these disease conditions. Indeed, there are an expanding number of studies suggesting that ferroptosis serves as a bona-fide target for the prevention and treatment of these diseases in relevant pre-clinical models. In this review, we summarize the progress in the research into ferroptosis and its regulatory mechanisms in human disease, while providing evidence in support of ferroptosis as a target for the treatment of these diseases. We also discuss our perspectives on the future directions in the targeting of ferroptosis in human disease.

关键词： ferroptosis     human disease     iron metabolism     lipid peroxidation     antioxidation    

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Tackling global electricity shortage through human power: Technical opportunities from direct or indirectutilizations of the pervasive and green human energy

Dan DAI, Jing LIU

《能源前沿（英文）》 2012年 第6卷 第3期   页码 210-226 doi: 10.1007/s11708-012-0200-3

摘要： With the energy and environmental problems becoming increasingly serious, human power, as a pervasive, renewable, mobile and environment friendly energy, draws more and more attention over the world. In this paper, the most basic features of human power are presented. The currently available human power harvesting theories and devices are briefly reviewed and compared. Further, direct or indirect utilization of human power in daily life, especially transportation and home appliances, such as human-powered car, watercraft, aircraft, washing machine and television etc. are summarized. Considering that the total energy from an individual is rather limited, as previously focused by most of the former works, it is conceived in this paper that an important future for large scale use of human powers lies in the efficient conversion, collection and storage of such energy from discrete people and then use it later on as desired. With the huge amount of energy gathered, the application category of human power would be significantly expended. Starting from this point, three technical ways towards efficiently utilizing human power are sketched, which are termed as human-powered grid (HPG), human-powered charger (HPC) and human-powered storage (HPS), among which, HPG is capable of collecting the electric power produced by each individual at different regions and thus can supply unique and flexible power to the customers covered in the area, without relying on the conventional electricity grid. The HPC can then charge various kinds of electrical devices instantly by a human driven generator which converts human power into electricity. Finally, the HPS can store electricity in time for later use. In this way, even for the devices requiring electricity that is strong enough, the collected human power can also serve as its reliable energy source. Meanwhile, utilization of human power becomes rather convenient and timely which guarantees its practical value. It is expected that with further research and increasing applications, human power could partially relieve the current global electricity shortage and environmental issues via its pervasive contribution.

关键词： human energy harvesting     human-powered transportation     human-powered home appliances     human-powered grid (HPG)     human-powered charger (HPC)     human-powered storage (HPS)     biofuel    

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Implantation of human umbilical cord mesenchymal stem cells for ischemic stroke: perspectives and challenges

null

《医学前沿（英文）》 2015年 第9卷 第1期   页码 20-29 doi: 10.1007/s11684-014-0371-x

摘要：

Ischemic stroke is a focal cerebral insult that often leads to many adverse neurological complications severely affecting the quality of life. The prevalence of stroke is increasing throughout the world, while the efficacy of current pharmacological therapies remains unclear. As a neuroregenerative therapy, the implantation of human umbilical cord mesenchymal stem cells (hUC-MSCs) has shown great possibility to restore function after stroke. This review article provides an update role of hUC-MSCs implantation in the treatment of ischemic stroke. With the unique “immunosuppressive and immunoprivilege” property, hUC-MSCs are advised to be an important candidate for allogeneic cell treatment. Nevertheless, most of the treatments are still at primary stage and not clinically feasible at the current time. Several uncertain problems, such as culture conditions, allograft rejection, and potential tumorigenicity, are the choke points in this cellular therapy. More preclinical researches and clinical studies are needed before hUC-MSCs implantation can be used as a routinely applied clinical therapy.

关键词： cellular therapy     transplantation     human umbilical cord     mesenchymal stem cells     ischemic stroke    

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标题 作者 时间 类型 操作

Social media and mobility landscape: Uncovering spatial patterns of urban human mobility with multi source

Yilan Cui, Xing Xie, Yi Liu

期刊论文

On the potential of iPhone significant location data to characterize individual mobility for air pollution

期刊论文

以人为本的城市交通：一种设计和完善城市交通基础设施的新方法

Dervilla Mitchell, Susan Claris, David Edge

期刊论文

A visual graphic approach for mobility analysis of parallel mechanisms

Xu PEI, Jingjun YU

期刊论文

微观移动协议主动切换机制研究

赵阿群

期刊论文

Analysis of the kinematic characteristics of a high-speed parallel robot with Schönflies motion: Mobility

Fugui XIE,Xin-Jun LIU

期刊论文

Erratum to: On the potential of iPhone significant location data to characterize individual mobility

期刊论文

PM-support interfacial effect and oxygen mobility in Pt, Pd or Rh-loaded (Ce,Zr,La)O catalysts

期刊论文

Microbial responses to the use of NaClO in sediment treatment

期刊论文

Challenges of human–machine collaboration in risky decision-making

期刊论文

面向未来智慧城市的汽车共享出行发展战略

陈轶嵩,赵俊玮,刘永涛

期刊论文

城市按需空中交通的综合网络设计与需求预测

吴志强, 张瑜

期刊论文

Zooming in and out of ferroptosis in human disease

期刊论文

Tackling global electricity shortage through human power: Technical opportunities from direct or indirectutilizations of the pervasive and green human energy

Dan DAI, Jing LIU

期刊论文

Implantation of human umbilical cord mesenchymal stem cells for ischemic stroke: perspectives and challenges

null

期刊论文