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Capacitive Control of Spontaneously Induced Electrical Charge of droplet by Electric Field-Assisted Pipetting

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Nano-Micro Letters 2015年第4期7卷 341-346页

作者： Horim Lee dongwhi Choi dong Sung Kim Geunbae Lim department of Mechanical Engineering Pohang University of Science and Technology (POSTECH) Analysis Science & Engineering team Semiconductor R&D Center Samsung Electronics Co. Ltd.

The spontaneously generated electrical charge of a droplet dispensed from conventional pipetting is undesirable and unpredictable for most experiments that use ***,a method for controlling and removing the electrical charge needs to be *** this study,by using the electrode-deposited pipet tip(E-pipet tip),the charge-controlling system is newly developed and the electrical charge of a droplet is precisely *** effect of electrolyte concentration and volume of the transferred solution to the electrical charge of a dispensed droplet is theoretically and experimentally investigated by using the equivalent capacitor ***,a proof-of-concept example of the self-alignment and self-assembly of sequentially dispensed multiple droplets is demonstrated as one of the potential *** that the electrical charge of the various aqueous droplets can be precisely and simply controlled,the fabricated E-pipet tip can be broadly utilized not only as a general charge-controlling platform of aqueous droplets but also as a powerful tool to explore fundamental scientific research regarding electrical charge of a droplet,such as the surface oscillation and evaporation of charged droplets.

关键词： Pipet tip Capacitive control Electrical charge Self-assembly

Challenges and requirements for the Application of Industry 4.0:A Special Insight with the Usage of Cyber-Physical System

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Chinese Journal of Mechanical Engineering 2017年第5期30卷 1050-1057页

作者： Egon Mueller Xiao-Li Chen ralph riedel department of Factory planning and Factory management Technische Universitt Chemnitz

Considered as a top priority of industrial devel- opment, Industry 4.0 （or Industrie 4.0 as the German ver- sion） has being highlighted as the pursuit of both academy and practice in companies. In this paper, based on the review of state of art and also the state of practice in dif- ferent countries, shortcomings have been revealed as the lacking of applicable framework for the implementation of Industrie 4.0. Therefore, in order to shed some light on the knowledge of the details, a reference architecture is developed, where four perspectives namely manufacturing process, devices, software and engineering have been highlighted. Moreover, with a view on the importance of Cyber-Physical systems, the structure of Cyber-Physical System are established for the in-depth analysis. Further cases with the usage of Cyber-Physical System are also arranged, which attempts to provide some implications to match the theoretical findings together with the experience of companies. In general, results of this paper could be useful for the extending on the theoretical understanding of Industrie 4.0. Additionally, applied framework and proto- types based on the usage of Cyber-Physical Systems are also potential to help companies to design the layout of sensor nets, to achieve coordination and controlling of smart machines, to realize synchronous production with systematic structure, and to extend the usage of information and communication technologies to the maintenance scheduling.

关键词： Industrie 4.0 - Internet of Things Cyber-Physical System Smart factory reference architectureIntelligent sensor nets robot control Synchronousproduction

reliable and Load Balance-Aware Multi-Controller deployment in SdN

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China Communications 2018年第11期15卷 184-198页

作者： Tao Hu Peng Yi Jianhui Zhang Julong Lan National digital Switching System Engineering & Technological r&d Center Zhengzhou 450002 China

Software defined Networking(SdN) provides flexible network management by decoupling control plane and data plane. However, such separation introduces the issues regarding the reliability of the control plane and controller load imbalance in the distributed SdN network, which will cause the low network stability and the poor controller performance. This paper proposes reliable and Load balance-aware Multi-controller deployment(rLMd) strategy to address the above problems. Firstly, we establish a multiple-controller network model and define the relevant parameters for rLMd. Then, we design the corresponding algorithms to implement this strategy. By weighing node efficiency and path quality, Controller Placement Selection(CPS) algorithm is introduced to explore the reliable deployments of the controllers. On this basis, we design Multiple domain Partition(MdP) algorithm to allocate switches for controllers according to node attractability and controller load balancing rate, which could realize the reasonable domain planning. Finally, the simulations show that, compared with the typical strategies, rLMd has the better performance in improving the reliability of the control plane and balancing the distribution of the controller loads.

关键词： software defined networking controller reliability load balancing networkoptimization

HiAtGang: How to Mine the Gangs Hidden Behind ddoS Attacks

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Chinese Journal of Electronics 2022年第2期31卷 293-303页

作者： ZHU Tian QIU Xiaokang rAO Yu YAN Hanbing ZHOU Yu SHI Guixin National Computer Network Emergency response Technical team Center School of Economics and management Beihang University

Identifying and determining behaviors of attack gangs is not only an advanced stage of the network security event tracing and analysis, but also a core step of large-scale combat and punishment of cyber attacks. Most of the work in the field of distributed denial of service(ddoS) attack analysis has focused on ddoS attack detection, and a part of the work involves the research of ddoS attack sourcing. We find that very little work has been done on the mining and analysis of ddoS attack gangs. ddoS attack gangs naturally have the attributes of human community relations. We propose a framework named HiAtGang, in which we define the concept of the gang detection in ddoS attacks and introduce the community analysis technology into ddoS attack gang analysis. different attacker clustering algorithms are compared and analyzed. Based on analysis results of massive ddoS attack events that recorded by CNCErT/CC(The National Computer Network Emergency response Technical team/Coordination Center of China), the effective gang mining and attribute calibration have been achieved. More than 250 ddoS attack gangs have been successfully tracked. Our research fills the gaps in the field of the ddoS attack gang detection and has supported CNCErT/CC in publishing “Analysis report on ddoS Attack resources” for three consecutive years and achieved a good practical effect on combating ddo S attack crimes.

关键词： massive ddoS data mining network security event ddoS attack gang analysis attribute calibration ddoS attack resources ddoS attack detection ddoS attack gang detection attacker clustering algorithms ddoS attack crimes ddoS attack sourcing ddoS attacks cyber attacks effective gang mining HiAtGang computer network security service attack analysis

A Mechanical Model for the Adhesion of Spiders to Nominally Flat Surfaces

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Journal of Bionic Engineering 2009年第2期6卷 135-142页

作者： Alessandro Gasparetto Tobias Seidl renato Vidoni dIEGM Department of ElectricalManagement and Mechanical EngineeringUniversity of Udine Advanced Concepts team European Space Agency

In dry attachment systems of spiders and geckos, van der Waals forces mediate attraction between substrate and animal tarsus. In particular, the scopula of Evarcha arcuata spiders allows for reversible attachment and easy detachment to a broad range of surfaces. Hence, reproducing the scopula's roughness compatibility while maintaining anti-bunching features and dirt particle repellence behavior is a central task for a biomimetic transfer to an engineered model. In the present work we model the scopula of E. arcuata from a mechano-elastic point of view analyzing the influence of its hierarchical structure on the attachment behavior. By considering biological data of the gecko and spider, and the simulation results, the adhesive capabilities of the two animals are compared and important confirmations and new directives in order to reproduce the overall structure are found. Moreover, a possible suggestion of how the spider detaches in an easy and fast manner is proposed and supported by the results.

关键词： bionics spider dry adhesion mechano-elastic model hierarchical structure

Prediction model of interval grey number based on dGM(1,1)

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Journal of Systems Engineering and Electronics 2010年第4期21卷 598-603页

作者： Bo Zeng Sifeng Liu Naiming Xie College of Business planning Chongqing Technology and Business University Chongqing 400067 E R. China College of Economics and management Nanjing University of Aeronautics and Astronautics Nanjing 210016 P. R. China

In grey system theory,the studies in the field of grey prediction model are focused on real number sequences,rather than grey number ***,a prediction model based on interval grey number sequences is *** mining the geometric features of interval grey number sequences on a two-dimensional surface,all the interval grey numbers are converted into real numbers by means of certain algorithm,and then the prediction model is established based on those real number *** entire process avoids the algebraic operations of grey number,and the prediction problem of interval grey number is usefully ***,through an example＇s program simulation,the validity and practicability of this novel model are verified.

关键词： grey system theory prediction model interval grey number grey number band grey number layer dGM(1 1) model.

Absorption characteristics of new solvent based on a blend of AMP and 1,8-diamino-p-menthane for CO_2 absorption

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Journal of Environmental Sciences 2012年第5期24卷 897-902页

作者： Sang-Sup Lee Seong-Man Mun Won-Joon Choi Byoung-Moo Min Sang-Won Cho Kwang-Joong Oh department of Environmental Engineering Chungbuk National University department of Environmental Engineering Pusan National University Corporate r&d Institute Fuel Cell System Development Team Doosan Heavy Industries & Construction Greenhouse Gas research Center Korea Institute of Energy Research department of Energy and Environment Korea Polytechnic VII College

Aqueous 1,8-diamino-p-menthane （KIEr-C3） and commercially available amine solutions were tested for CO2 absorption. A 2-amino-2-methyl-1-propanol （AMP） solution with an addition of KIEr-C3 showed 9.3% and 31.6% higher absorption rate for CO2 than the AMP solution with an addition of monoethanolamine （MEA） and ammonia （NH3）, respectively. The reaction rate constant for CO2 absorption by the AMP/KIEr-C3 solution was determined by the following equation： k2,AMP/C3 = 7.702×106 exp （-2248.03/T）. A CO2 loading ratio of the AMP/KIEr-C3 solution was also 2 and 3.4-times higher than that of the AMP/NH3 solution and the AMP/MEA solution, respectively. Based on the experimental results, KIEr-C3 may be used as an excellent additive to increase CO2 absorption capability of AMP.

关键词： carbon dioxide absorption rate and capacity 1 8-diamino-p-menthane 2-amino-2-methyl-1-propanol

discovery of transition rules for geographical cellular automata by using ant colony optimization

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Science China Earth Sciences 2007年第10期50卷 1578-1588页

作者： Anthony Gar-On YEH Center of Urban planning and Environmental management The University of Hong Kong Hong Kong SAR China

A new intelligent algorithm of geographical cellular automata (CA) based on ant colony optimization (ACO) is proposed in this paper. CA is capable of simulating the evolution of complex geographical phenomena, and the core of CA models is how to define transition rules. However, most of the transition rules are defined by mathematical equations, and are hence not explicit. When the study area is complicated, it is much more difficult to extract parameters for geographical CA. As a result, ACO is applied to geographical CA to automatically and intelligently obtain transition rules in this paper. The transition rules extracted by ACO are defined as logical expressions rather than implicit mathematical equations to describe the complex relationships of the nature, and easy for people to understand. The ACO-CA model was applied to simulating rural-urban land conversions in Guangzhou City, China, and appropriate simulation results were generated. Compared with See5.0 decision tree model, ACO-CA is more suitable to discovering transition rules for geographical CA.

关键词： ant colony optimization, CA, geographical simulation, artificial intelligence

Knowledge discovery for geographical cellular automata

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Science China Earth Sciences 2005年第10期48卷 1758-1767页

作者： Anthony Gar-On Yeh Centre of Urban planning and Environmental management The University of Hong Kong Hong Kong SAR China

This paper proposes a new method for geographical simulation by applying data mining techniques to cellular automata. CA has strong capabilities in simulating complex systems. The core of CA is how to define transition rules. There are no good methods for defining these transition rules. They are usually defined by using heuristic methods and thus subject to uncer-tainties. Mathematical equations are used to represent transition rules implicitly and have limita-tions in capturing complex relationships. This paper demonstrates that the explicit transition rules of CA can be automatically reconstructed through the rule induction procedure of data mining. The proposed method can reduce the influences of individual knowledge and preferences in de-fining transition rules and generate more reliable simulation results. It can efficiently discover knowledge from a vast volume of spatial data.

关键词： knowledge discovery, cellular automata, geographical simulation, geographical information systems.