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A Dataflow-Oriented Programming Interface for Named Data Networking

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Journal of Computer Science & Technology 2018年第1期33卷 158-168页

作者： Li-Jing Wang y.ng-qiang Lv Ilya Moiseenko dong-Sheng Wang Department of Computer Science and Technology Tsinghua University Beijing 100084 China Tsinghua National Laboratory for Information Science and Technology Tsinghua University Beijing 100084 China Computer Science Department University of California Los Angeles CA 90095 U.S.A.

Inheriting from a data-driven communication pattern other than a location-driven pattern, named data net- working （NDN） offers better support to network-layer dataflow. However, the application developers have to handle complex tasks, such as data segmentation, packet verification, and flow control, due to the lack of proper transport-layer protocols over the network layer. In this study, we design a dataflow-oriented programming interface to provide transport strategies for NDN, which greatly improves the efficiency in developing applications. This interface presents two application data unit; （ADU） retrieval strategies according to different data publishing patterns, in which it adopts an adaptive ADU pipelining algorithm to control the dataflow based on the current network status and data generation rate. The interface also offers network measurement strategies to monitor an abundance of critical metrics infuencing the application performance. We verify the functionality and performance of our interface by implementing a video streaming application spanning 11 time zones over the worldwide NDN testbed. Our experiments show that the interface can efficiently support developing high-performance and dataflow-driven NDN applications.

关键词： named data networking (NDN) dataflow network architecture and design transport-layer protocol

Science Letters:A robust polysilicon-assisted SCR in ESD protection application

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2007年第12期8卷 1879-1883页

作者： CUI qiang HAN yan dong Shu-rong LIOU Juin-jie ESD Lab Institute of Microelectronics and Photoelectronics Zhejiang University Hangzhou 310027 China Research Center for Embedded System Zhejiang University Hangzhou 310027 China Department of Electrical and Computer Engineering University of Central Florida Orlando 32816 USA

A novel polysilicon-assisted silicon-controlled rectifier （SCR） is presented and analyzed in this paper, which is fabricated in HHNEC＇s 0.18μm EEPROM process. The polysilicon-assisted SCRs take advantage of polysilicon layer to help bypass electro-static discharge （E S D） current without occupy.ng extra layout area. TLP current-voltage （I-V） measurement results show that given the same layout areas, robustness performance of polysilicon-assisted SCRs can be improved to 3 times of conventional MLSCR＇s. Moreover, one-finger such polysilicon-assisted SCRs, which occupy only 947 [3mz layout area, can undergo 7-kV HBM ESD stress. Results further demonstrate that the S-type I-V characteristics of polysilicon-assisted SCRs are adjustable to different operating conditions by changing the device dimensions. Compared with traditional SCRs, this new SCR can bypass more ESD currents and consumes smaller IC area.

关键词： Electro-static discharge (ESD) Silicon-controlled rectifier (SCR) Robustness performance Polysilicon-assisted Human body model (HBM)

Ecological effect of the plantation of Sabina vulgaris in the Mu Us Sandy Land,China

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Journal of Arid Land 2024年第1期16卷 14-28页

作者： NAN Weige dong Zhibao ZHOU Zhengchao LI qiang CHEN Guoxiang School of Geography and Tourism Shaanxi Normal UniversityXi'an 710062China Shaanxi Key Laboratory of Ecological Restoration in Shaanbei Mining Area Yulin UniversityYulin 719000China College of Prataculture Gansu Agricultural UniversityLanzhou 730070China

Vegetation restoration through artificial plantation is an effective method to combat desertification,especially in arid and semi-arid *** study aimed to explore the ecological effect of the plantation of Sabina vulgaris on soil physical and chemical properties on the southeastern fringe of the Mu Us Sandy Land,*** collected soil samples from five depth layers(0-20,20-40,40-60,60-80,and 80-100 cm)in the *** plantation plots across four plantation ages(4,7,10,and 16 years)in November 2019,and assessed soil physical(soil bulk density,soil porosity,and soil particle size)and chemical(soil organic carbon(SOC),total nitrogen(TN),available nitrogen(AN),available phosphorus(AP),available potassium(AK),cation-exchange capacity(CEC),salinity,p H,and C/N ratio)*** results indicated that the soil predominantly consisted of sand particles(94.27%-99.67%),with the remainder being silt and *** plantation age increased,silt and very fine sand contents progressively *** 16 years of planting,there was a marked reduction in the mean soil particle *** initial soil fertility was low and declined from 4 to 10 years of planting before witnessing an *** positive correlations were observed for the clay,silt,and very fine sand(mean diameter of 0.000-0.100 mm)with SOC,AK,and p *** contrast,fine sand and medium sand(mean diameter of 0.100-0.500 mm)showed significant negative correlations with these *** findings ascertain that the plantation of *** requires 10 years to effectively act as a windbreak and contribute to sand fixation,and needs 16 years to improve soil physical and chemical ***,these improvements were found to be highly beneficial for vegetation restoration in arid and semi-arid *** research can offer valuable insights for the protection and restoration of the vegetation ecosystem in the sandy lands in China.

关键词： Sabina vulgaris plantation age soil physical and chemical properties soil particle size soil fertility vegetation restoration Mu Us Sandy Land

Boron-doped carbon dots:Doping strategies,performance effects,and applications

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Chinese Chemical Letters 2024年第7期35卷 100-106页

作者： qiang Fu Shouhong Sun Kangzhi Lu Ning Li Zhanhua dong College of Engineering Qufu Normal UniversityRizhao 276826China

Due to their superior fluorescence,phosphorescence,and catalytic capabilities,carbon dots(CDs),an emerging class of fluorescent carbon nanomaterials,have a wide range of potential *** properties of CDs have recently been controlled extensively by heteroatom *** atoms have been effectively doped into the structure of CDs due to their similar size to carbon atoms and excellent electron-absorbing ability to further improve the performance of *** this review,we summarize the research progress of boron-doped CDs in recent years from the aspects of doping strategies,effects of boron doping on different performances of CDs and *** from the two aspects of single boron doping and boron and other atom co-doping,from different precursor materials to different synthesis methods,the doping strategies of boron-doped CDs are reviewed in ***,the effects of boron doping on the fluorescence,phosphorescence and catalytic performance of CDs and applications of boron-doped CDs in optical sensors,information encryption and anti-counterfeiting are ***,we further provide a prospect towards the future development of boron-doped CDs.

关键词： Carbon dots Boron-doped Luminescent material Doping strategies Performance effects

A review on passenger emergency evacuation from multimodal transportation hubs

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Journal of Traffic and Transportation Engineering(English Edition) 2022年第4期9卷 591-607页

作者： Zhiman Xu qiang Bai yuqi Shao Aihui Hu Zhi dong College of Transportation Engineering Chang'an UniversityXi'an 710064China

Multimodal transportation hubs serve as transfer points with the function of collecting,transferring,and distributing passengers and play a significant role in the entire multimodal transportation *** an emergency,the development of an effective and efficient emergency evacuation strategy to evacuate passengers from multimodal transportation hubs is very *** paper aims to conduct a comprehensive review on passenger emergency evacuations from multimodal transportation hubs,summarize the achievements,identify gaps in existing literature,thus to lay a solid foundation for future *** paper first reviewed studies on evacuee behavior characteristics in emergency evacuations,including pedestrian characteristics,pedestrian behavior characteristics,and pedestrian flow *** evacuation models,including pedestrian evacuation models and multimodal transportation evacuation models,were *** addition,a retrospective analysis was carried out for evacuation *** is found that while many studies have been conducted on passenger emergency evacuations from multimodal transportation hubs,most of them focus more on evacuating pedestrians from inside to outside of hub buildings;the studies on evacuation at multimodal transfer points are *** is also found that most existing studies tried to establish a general model to handle all types of emergency evacuations;in fact,a model would be more efficient if it is just established for a specific emergency and for a specific type of ***,existing data collection methods may collect biased data;new data collection methods need to be explored to increase the accuracy of data *** study directions include the evacuation at multimodal transfer points,interactive effects between individual pedestrian behavior and pedestrian group behavior,more specific types of emergency evacuations,more accurate data collection methods,and tradeoffs between cost and benefit in eme

关键词： Multimodal transportation hubs Emergency evacuation Passengers Pedestrian behavior Evacuation simulation

Constructing two-dimensional interfacial ice-like water at room temperature for nanotribology

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Nano Research 2023年第7期16卷 9977-9982页

作者： yue Hong Deliang Zhang Zhiliang Gao yuge Zhang qiang Li Mingdong dong Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education School of Chemistry and Chemical EngineeringShandong UniversityJinan 250100China Interdisciplinary Nanoscience Center(iNANO) Aarhus UniversityAarhus C DK-8000Denmark

Water/solid interfaces play crucial roles in a wide range of physicochemical and technological ***,our microscopic understanding of the interfacial water under ambient temperature is relatively ***,we report the direct experimental construction of two-dimensional(2D)ice-like water layer on hydrophilic surface at room temperature by using environment-controlled atomic force *** contrast to the prevailing view that nanoscale confinement is needed for the formation of 2D ice-like water,we find that 2D ice-like water can form on mica surface at temperatures above the freezing point without *** 2D ice-like water layer shows epitaxial relation with the underly.ng mica lattice and good *** addition,the growth of ice-like water layer can be well controlled by the mechanical force from the scanning ***,the friction properties of 2D ice-like water layer are also probed by friction force *** is found that the icelike water layer can dramatically reduce the *** results provide deep understanding of 2D ice-like water formation on solid surfaces without nanoscale confinement and suggest means of growing 2D ices on surfaces at room temperature.

关键词： two-dimensional ice friction mica surface atomic force microscopy friction force microscopy

Shape-engineering of organic heterostructures via a sequential selfassembly strategy for multi-channel photon transportation

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Nano Research 2022年第4期15卷 3781-3787页

作者： yue yu qiang Lv yi yuan Xue-dong Wang Liang-Sheng Liao Institute of Functional Nano&Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesSoochow UniversitySuzhou 215123China Macao Institute of Materials Science and Engineering Macao University of Science and TechnologyTaipaMacao 999078MacaoChina

The controlled self-assembly of organic heterostructures(OHSs)with precisely defined compositions,architectures,and interfaces,have largely remained a ***,we introduce an effective approach to accurately construct three types of axial branching OHSs including unilateral axial OHSs,bilateral single-branching axial OHSs and bilateral multi-branching axial OHSs through modulating hierarchical charge-transfer intermolecular interactions and sequential crystal nucleation rate on account of the two different cocrystals with the low lattice mismatching rate of~2.2%.The present work opens an avenue for rationally designing and finely synthesizing more kinds of OHSs.

关键词： sequential self-assembly axial heterostructures non-covalent interaction lattice-match multi-channel outputs

Neglected interstitial space in malaria recurrence and treatment

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Nano Research 2020年第10期13卷 2869-2878页

作者： qiang Zhang Zhuo Ao Nan Hu yuting Zhu Fulong Liao dong Han CAS Center for Excellence in Nanoscience National Center for Nanoscience and TechnologyBeijing 100190China Unriversity of Chinese Academy of Sciences Beijing 100049China Department of Traditional Chinese Medicine Chengde Medical UniversityChengde 066000China Artemisinin Research Center and the Institute of Chinese Materia Medica China Academy of Chinese Medical SciencesBeijing 100049China

The interstitial space, a widespread fluid-filled compartment throughout the body, is related to many pathophysiological alterations and diseases, attracting increasing attention. The vital role of interstitial space in malaria infection and treatment has been neglected current research efforts. We confirmed the reinfection capacity of parasites sequestrated in interstitial space, which replenish the mechanism of recurrence. Malaria parasite-infected mice were treated with artemisinin-loaded liposomes through the interstitial space and exhibited a better therapeutic response. Notably, compared with oral administration, interstitial administration showed an unexpectedly high activation and recruitment of immune cells, and resulted in better clearance of sequestered parasites from organs, and enhanced pathological recovery. The interstitial route of administration prolongs the blood circulation time of artemisinin and increases its plasma concentration, and may compensate for the inefficiency of oral administration and the nanotoxicity of intravenous administration, providing a potential strategy for infectious disease therapy.

关键词： interstitial space malaria infection recurrence treatment

Microstructure and magnetic properties of SmCo_(5) sintered magnets

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Rare Metals 2020年第11期39卷 1295-1299页

作者： dong-Tao Zhang Rong-Chun Zhu Ming yue Wei-qiang Liu College of Materials Science and Engineering Key Laboratory of Advanced Functional MaterialsMinistry of Education of ChinaBeijing University of TechnologyBeijing 100124China

SmCo_(5)sintered magnets with good thermal stability are mainly used in high-temperature *** this study,two types of SmCo_(5) powders with different nominal z values were mixed and synthesized into SmCo_(5) magnets by the traditional powder metallurgy *** magnetic properties of the SmCo_(5) sintered magnet are maximum energy product of(BH)_(max)=172.29 kJ·m^(-3),remanence of B_(r)=7.47×10^(5)A·m^(-1)and coercivity of H_(ci)=2.42 *** results show that there are three coexisting phases in the magnet,which are SmCo_(5)phase,Sm_(2)Co_(7)phase and Sm_(2)O_(3)*** microstructural observation indicates that the average grain size in the magnet is about 8μm,and the high coercivity of this magnet is attributed to these fine grains.X-ray diffraction(XRD)and electron backscatter diffraction(EBSD)results indicate that the magnet has a well-aligned(00l)orientation texture.

关键词： SmCo_(5) Sintered magnets Magnetic properties