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Orientation and mobility control of 4HCB organic film for flexible X-ray detectors with high performance

Journal of Materials Science & Technology 2023年第4期135卷 46-53页

作者： Meng Xu Menghua Zhu dou zhao Sixin Chen Shilin Liu Quanchao Zhang Pei Yuan Binbin Zhang Paul Sellin Wanqi Jie Yadong Xu State Key Laboratory of Solidification Processing MIIT Key Laboratory of Radiation Detection Materials and Devicesand School of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Department of Physics University of SurreyGuildford GU27XHUK

In comparison to inorganic counterparts,organic semiconducting(OSC)crystalline films are promising for building large-area and flexible ionizing radiation detectors for X-ray imaging or dosimetry due to their tissue equivalence,simple processing and large-scale production *** processes,how-ever,hinder the ability to generate aligned and large-area films with high carrier *** this work,the space-confined melt process is used to produce highly orientated 4HCB(4-hydroxycyanobenzene)OSC films with a large area of 15×18 mm^(2).The out-of-plane direction of the 4HCB film is,and the benzene rings are found to be extensively overlapped inside the in-plane direction,according to the XRD *** film exhibits a high resistivity up to 1012cm,and high hole mobility of 10.62 cm^(2)V^(−1)s^(−1).Furthermore,the 4HCB(80μm-thick film)based X-ray detectors can achieve a sensitivity of 93μC Gy air^(−1) cm^(−2)and on/offratio of *** device also shows steady flexibility,with no degradation in detecting function after 100 cycles of ***,the proposed 4HCB film detectors demonstrated a high-resolution X-ray imaging *** imaging of several materials with sharp edges(copper and polytetrafluoroethylene)has been *** work has developed a fast but efficient approach for producing large-area,highly oriented OSC films for high-performance X-ray detectors.

关键词： Organic semiconducting films Highly oriented X-ray Detector X-ray imaging Wearable detector

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Efficient quantum private comparison protocol utilizing single photons and rotational encryption

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Chinese Physics B 2022年第6期31卷 221-227页

作者： Tian-Yi Kou Bi-Chen Che zhao dou Xiu-Bo Chen Yu-Ping Lai Jian Li Information Security Center State Key Laboratory of Networking and Switching TechnologyBeijing University of Posts and TelecommunicationsBeijing 100876China Information Security Center School of Cyberspace SecurityBeijing University of Posts and TelecommunicationsBeijing 100876China

As a branch of quantum secure multiparty computation,quantum private comparison is applied frequently in many fields,such as secret elections,private voting,and identification.A quantum private comparison protocol with higher efficiency and easier implementation is proposed in this *** private secrets are encoded as single polarized photons and then encrypted with a homomorphic rotational encryption *** on this method and the circular transmission mode,we implement the multiplexing of photons,raising the efficiency of our protocol to 100%.Our protocol is easy to realize since only single photons,unitary operation,and single-particle measurement are ***,the analysis shows that our protocol is also correct and secure.

关键词： quantum private comparison rotational encryption polarized single photons efficiency

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Quantum multicast communication over the butterfly network

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Chinese Physics B 2022年第1期31卷 150-158页

作者： Xing-Bo Pan Xiu-Bo Chen Gang Xu zhao dou Zong-Peng Li Yi-Xian Yang Information Security Center State Key Laboratory of Networking and Switching TechnologyBeijing University of Posts and TelecommunicationsBeijing 100876China School of Information Science and Technology North China University of TechnologyBeijing 100144China Huawei Technologies Co.Ltd Shenzhen 518129China School of Computer Science Wuhan UniversityWuhan 430072China

We propose a scheme where one can exploit auxiliary resources to achieve quantum multicast communication with network coding over the butterfly *** this paper,we propose the quantum 2-pair multicast communication scheme,and extend it to k-pair multicast communication over the extended butterfly ***,an EPR pair is shared between each adjacent node on the butterfly network,and make use of local operation and classical communication to generate entangled relationship between non-adjacent ***,each sender adds auxiliary particles according to the multicast number k,in which the CNOT operations are applied to form the multi-particle entangled ***,combined with network coding and free classical communication,quantum multicast communication based on quantum measurements is completed over the extended butterfly *** only the bottleneck problem is solved,but also quantum multicast communication can be completed in our *** the same time,regardless of multicast number k,the maximum capacity of classical channel is 2 bits,and quantum channel is used only once.

关键词： quantum nondemolition measurement special single particle basis quantum network coding quantum multicast communication

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Features of Tropical Volcanic Rock and Soil of Jakarta-Bandung HSR and Engineering Countermeasures

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Chinese Railways 2024年第1期 30-37页

作者： zhao dou WANG Shujie ZHENG Mingda(Translated) China Railway Design Corporation Track Station and Yard Design and Research InstituteChina Railway Design Corporation 不详

The geological features of three types of tropical volcanic rock and soil distributed along Jakarta-Bandung high-speed railway(HSR),including pozzolanic clayey soil,mud shale and deep soft soil,are studied through field and laboratory *** paper analyzes the mechanism and causes of engineering geological problems caused by tropical volcanic rock and soil and puts forward measures to control subgrade slope instability by rationally determining project type,making side slope stability control and strengthening waterproofing and ***“zero front slope”tunneling technology at the portal,the simplified excavation method of double-side wall heading and the cross brace construction method of arch protection within the semi-open cut row pile frame in the“mountainside”eccentrically loaded soft soil stratum are adopted to control the instability of tunnel side and front slopes,foundation pits and working faces;CFG or pipe piles shall be used to reinforce soft and expansive foundation or replacement measures shall be taken,and the scheme of blind ditch+double-layer water sealing in ballastless track section shall be put forward to prevent arching deformation of foundation;the treatment measures of CFG pile,pipe pile and vacuum combined piled preloading are adopted to improve the bearing capacity of foundation in deep soft soil section and solve the problems of settlement control and uneven *** engineering countermeasures have been applied during the construction of Jakarta-Bandung HSR and achieved good results.

关键词： Jakarta-Bandung HSR tropical volcanic rock and soil engineering geological features engineering geological problems engineering countermeasures

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Virtual Organization Information Systems and its Reengineering for Agile Manufacturing

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厦门大学学报（自然科学版） 2002年第S1期41卷 223-224页

作者： zhao Peng-wei, dou Yong-xiang (School of Economy and Management, Xidian University, Xi’ an 710071, C hina)

It is now possible to organize globally while worki ng locally: Information technologies like e-mail, the Internet, and video confere ncing to the desktop permit tight coordination of geographically dispersed worke rs across time zones and cultures. Companies are not limited to physical locatio ns for providing products and services. Networked information systems are allowi ng companies to coordinate their geographically distributed capabilities as virt ual organizations. In order for organizations to succeed, they must be able to r espond with agility in a geographically dispersed environment. The core for a vi rtual organization to increase the utilization rate of resources to the maxi mum and to make full use of the transient market opportunities lies in how to br ing the potential of information technology into play. Based on the philosophy o f agile manufacturing, this paper analyses the basic concepts and connotation of Virtual Organization Information systems(VOIS). VOIS is an information system composed of some independent information subsystems that are autonomous, collab orative and belong to umpty organizations respectively. VOIS support the operati on of virtual organization, and automate the information flow across organizatio nal boundaries. Such systems have capabilities as rapid construction, quick oper ation, and agile reengineering and swift adaptability. Differences between VOIS and traditional enterprise information systems are analyzed. On the basis of ana lyzing the structure of VOIS, an abstract hierarchical structure of VOIS is prop osed using object-oriented method. Reengineering ideology and methods of VOIS a re also explored in light of the three layers structure.

关键词： virtual organization information systems abstra ct hierarchical structure object- oriented method

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多共振消声器串联系统声学特性分析及应用

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振动与冲击 2016年第2期35卷 189-194页

作者：高书娜赵金斗西南大学工程技术学院重庆400716

针对内燃机进气系统需良好的低频消声效果而可用空间有限的问题,研究多个消声器串联后的声学特性。基于共振消声器集中参数模型,推导消声器串联后系统主消声频率公式并验证。结果表明,双共振消声器串联系统有两主消声频率,即小于、大于... 详细信息

针对内燃机进气系统需良好的低频消声效果而可用空间有限的问题,研究多个消声器串联后的声学特性。基于共振消声器集中参数模型,推导消声器串联后系统主消声频率公式并验证。结果表明,双共振消声器串联系统有两主消声频率,即小于、大于下端消声器的偏频;增加体积比时较小的接近偏频,较大的远离偏频;长度比等于1、面积比小于等于1时串联系统所需体积小。串联系统消声器结构参数均相同时主消声频率个数与消声器个数相同。基于此,对某商用车进气系统进行降噪设计,使200 Hz以内的传声损失整体提高约5 d B。

关键词：串联共振消声器集中参数模型主消声频率总体积

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修改情感还是增强认知?——道德增强的两种技术主张及其争论

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自然辩证法研究 2023年第5期39卷 67-74页

作者：赵豆南京大学哲学系南京210023

基于对人类道德机制的不同理解,道德生物增强中存在两种技术主张:“情感道德增强”与“认知道德增强”。情感道德增强主张利用生物技术修改情感让个体拥有更道德的动机,从而实现道德增强;认知道德增强则认为道德增强的可靠路径在于道德... 详细信息

基于对人类道德机制的不同理解,道德生物增强中存在两种技术主张:“情感道德增强”与“认知道德增强”。情感道德增强主张利用生物技术修改情感让个体拥有更道德的动机,从而实现道德增强;认知道德增强则认为道德增强的可靠路径在于道德认知的改进。这两种主张围绕增强技术的有效性问题、对智能体自由的伤害以及行为道德价值的影响等话题,存在许多理论上的争论。这些争论揭示出两种技术主张面临一系列理论挑战,包括治疗与增强概念划界不清、修改情感以“狭义”增强智能体道德的论证不足、认知道德增强悖论以及两种技术主张都具有机械决定论倾向等问题,而这些挑战中也蕴含着未来道德增强理论与技术研究的新机遇。

关键词：道德增强生物技术情感认知

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从人类增强到机器向人化--对脑机接口技术两种进路的哲学审思

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安徽大学学报（哲学社会科学版） 2021年第6期45卷 27-35页

作者：赵豆南京大学哲学系江苏南京210023

近年来,随着脑机接口(BCI)技术的发展,其在帮助人类延展心灵方面展现出巨大潜力。这种潜力首先直观反映在BCI研究与应用的“激进进路”中,BCI设备通过对人体尤其是大脑进行接触式作用,可以有效“增强”人类的行为和认知等能力。然而由... 详细信息

近年来,随着脑机接口(BCI)技术的发展,其在帮助人类延展心灵方面展现出巨大潜力。这种潜力首先直观反映在BCI研究与应用的“激进进路”中,BCI设备通过对人体尤其是大脑进行接触式作用,可以有效“增强”人类的行为和认知等能力。然而由于“激进进路”存在诸多难以逾越的伦理困境,在较长一段时间内人类还需要依赖“保守进路”,即BCI促进机器“向人化”,以弥补人类自身能力上的不足。也即以BCI为中介将机器纳入人类认知系统中,促使机器通过对人类伦理的“把握”以及对情感的模仿,来帮助或代替人类进行更加合理的决策。虽然机器“向人化”进路的可行性较高,但这一进路也并非尽善尽美。具身认知、行动者网络以及心灵哲学等理论向这一进路提出了理论与现实上的挑战,揭示出这一进路面临的“通感难题”以及未来向人化机器的社会定位与人类预测机器行为的策略选择等问题。

关键词：脑机接口人类增强机器向人化延展心灵哲学审思

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天津铁路枢纽客运系统布局研究

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铁道运输与经济 2008年第10期30卷 86-89页

作者：赵斗铁道第三勘测设计集团有限公司站线处天津300142

基于京津城际铁路、津秦客运专线、京沪高速铁路已经或即将引入天津铁路枢纽,结合天津市城市有关规划,对天津铁路枢纽客运布局进行了调整。根据京沪高速铁路、京津城际铁路、津秦客运专线的推荐引入方案,阐述了天津枢纽的客运站总布局... 详细信息

基于京津城际铁路、津秦客运专线、京沪高速铁路已经或即将引入天津铁路枢纽,结合天津市城市有关规划,对天津铁路枢纽客运布局进行了调整。根据京沪高速铁路、京津城际铁路、津秦客运专线的推荐引入方案,阐述了天津枢纽的客运站总布局和客运站分工,以及从各方案的设计研究得到的启示。

关键词：天津枢纽客运站城市规划方案

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我国重载铁路速度目标值探讨

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铁道标准设计 2016年第4期60卷 1-4页

作者：赵斗铁道第三勘察设计院集团有限公司天津300142

重载铁路运输品类为大宗货物,其牵引质量大、轴重大,重载铁路速度目标值的确定有别于普通货运铁路,需要深入探讨。从行车组织、路基、桥梁、轨道、供电等方面,对重载铁路速度目标值为80、100、120 km/h时分别进行计算和对比,并结合国内... 详细信息

重载铁路运输品类为大宗货物,其牵引质量大、轴重大,重载铁路速度目标值的确定有别于普通货运铁路,需要深入探讨。从行车组织、路基、桥梁、轨道、供电等方面,对重载铁路速度目标值为80、100、120 km/h时分别进行计算和对比,并结合国内外运营实际进行分析。对比分析表明,不同速度目标值对轨道、路基、桥梁、供电等影响不大,但当速度目标值大于100 km/h时,机车牵引和制动难以实现,重载货物列车设计行车速度等于或小于100km/h是适宜的。

关键词：重载铁路速度目标值牵引质量轴重

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