The Research Situation and Prospect on Artificial Ionospheric Modification of National University of Defense Technology HAO Research Group

2018 ◽  
Author(s):  
Zhe Guo ◽  
Hanxian Fang ◽  
Huijuan Lyu
Keyword(s):  
Research Group ◽  
Ionospheric Modification ◽  
Defense Technology ◽  
National University ◽  
Research Situation

Statistical Analysis of the Detection Probability of the TianTuo-3 Space-based AIS

2017 ◽  
Vol 71 (2) ◽  
pp. 467-481 ◽  
Author(s):  
Shiyou Li ◽  
Lihu Chen ◽  
Xiaoqian Chen ◽  
Yong Zhao ◽  
Lei Yang
Keyword(s):  
Statistical Analysis ◽  
Detection Probability ◽  
High Probability ◽  
Distribution Density ◽  
Automatic Identification ◽  
Identification System ◽  
Receiving Antenna ◽  
Defense Technology ◽  
Vessel Detection ◽  
National University

The Micro-Nano satellite TianTuo-3 (TT-3) developed by the National University of Defense Technology (NUDT) was successfully launched on 20 September 2015. The space-based Automatic Identification System (AIS) on board TT-3 works well and stably receives AIS signals from global vessels. In this work, we perform statistical analysis on the detection probability of the vessels in the concerned areas by using the TT-3 AIS data. The results suggest that the detection probability of vessels decreases as the distribution density increases, especially in the offshore areas of dense traffic and the TT3-AIS vessel detection probability in the oceans can be higher than 40%, indicating that the TT-3 AIS has achieved a high probability of coverage of vessels for a single receiving antenna. The analysis results will present helpful references both in evaluating the potential application of satellite-based AIS and for designing the next generation space-based AIS which might greatly improve the detection probability of ocean-going vessels.

scholarly journals Back-end porting of FT_MX based on LLVM compilation architecture

2021 ◽  
Vol 336 ◽  
pp. 04018
Author(s):  
Ping Deng ◽  
Xiaolong Zhu ◽  
Haiyan Sun ◽  
Yi Ren
Keyword(s):  
Open Source ◽  
High Performance ◽  
Instruction Set ◽  
University Of Illinois ◽  
Specific Process ◽  
Defense Technology ◽  
Migration Mechanism ◽  
National University ◽  
Compiler Framework ◽  
The University

The processor FT_MX is a high-performance chip independently developed by the National University of Defense Technology, with an innovative architecture and instruction set. LLVM architecture is a widely used and efficient open source compiler framework initiated by the University of Illinois. This paper introduces the basic architecture and functions of LLVM, analyzes the back-end migration mechanism of the architecture in detail, and gives the specific process of implementing FT_MX back-end migration, and realizes the support of LLVM architecture to the back-end of FT_MX processor.

Scientometric Analysis of Chinese Cyber-Denial and Deception Research

2015 ◽  
Vol 5 (4) ◽  
pp. 15-58
Author(s):  
Phil Hilliard ◽  
Frank J. Stech ◽  
Kristin E. Heckman ◽  
Janice Redington Ballo
Keyword(s):  
Science And Technology ◽  
Computer Crime ◽  
Scientometric Analysis ◽  
Research Institutions ◽  
People's Republic Of China ◽  
Research Topics ◽  
Tsinghua University ◽  
Republic Of China ◽  
Defense Technology ◽  
National University

A scientometrics analysis was conducted of the People's Republic of China (PRC) science and technology literature, with a focus on cyber-denial and deception (cyber-D&D). The objectives of this study were to identify leading Chinese cyber-D&D researchers and research institutions; cyber-D&D research topics, keywords, and terminology; and networks among researchers, institutions, and topics. The scientometrics analysis revealed that Chinese researchers have published papers on the following cyber-D&D topics: computer crime, spam, honeypots, phishing, and spoofing. A number of universities are conducting cyber-D&D research. Tsinghua University and National University of Defense Technology were identified as producing the greatest number of articles related to cyber-D&D. Two of the most prolific cyber-D&D authors, J Bi and Jinbo Wu, are affiliated with Tsinghua University.

Cluster Preface: Silicon in Synthesis and Catalysis

Synlett ◽  
2017 ◽  
Vol 28 (18) ◽  
pp. 2394-2395 ◽  
Author(s):  
Martin Oestreich
Keyword(s):  
Organic Chemistry ◽  
Asymmetric Catalysis ◽  
Research Group ◽  
Kinetic Resolution ◽  
Bond Formation ◽  
Doctoral Degree ◽  
Ion Chemistry ◽  
National University ◽  
Type C ◽  
Mechanistic Investigations

Martin Oestreich is Professor of Organic Chemistry at the Technische Universität Berlin. His appointment was supported by the Einstein Foundation Berlin. He received his diploma degree with Paul Knochel (Marburg, 1996) and his doctoral degree with Dieter Hoppe (Münster, 1999). After a two-year postdoctoral stint with Larry E. Overman ­(Irvine, 1999–2001), he completed his habilitation with Reinhard ­Brückner (Freiburg, 2001–2005) and was appointed as Professor of Organic Chemistry at the Westfälische Wilhelms-Universität Münster (2006–2011). He also held visiting positions at Cardiff University in Wales (2005) and at The Australian National University in Canberra (2010). Martin Oestreich’s research focuses on silicon in synthesis and catalysis, the theme of the present SYNLETT Cluster. His early work centered on the use of silicon-stereogenic silicon reagents in asymmetric catalysis, and his laboratory continues to employ them as stereochemical probes in mechanistic investigations. His research group made fundamental contributions to catalytic carbon–silicon bond formation with nucleo­philic and, likewise, electrophilic silicon reagents, and Martin Oestreich is probably best known for his work in silylium-ion chemistry. Recent accomplishments of his laboratory include Friedel–Crafts-type C–H silylation, transfer hydrosilylation, and kinetic resolution of alcohols by enantioselective silylation.

Application of Magnetic Flux Feedback Control in Hybrid Suspension System

2013 ◽  
Vol 709 ◽  
pp. 273-280
Author(s):  
Wen Qing Zhang ◽  
Jie Li ◽  
Kun Zhang ◽  
Peng Cui
Keyword(s):  
Magnetic Flux ◽  
Feedback Linearization ◽  
Control Algorithm ◽  
Suspension System ◽  
Magnetic Suspension ◽  
Magnetic Flux Density ◽  
State Variable ◽  
Suspension Control ◽  
Defense Technology ◽  
National University

Hybrid suspension system with permanent-magnet and electromagnet consumes little power consumption, and can realize larger suspension gap. We took magnetic flux signal as a state variable, and put this signal back to suspension control system. So we got the hybrid suspension mathematical model based on magnetic flux signal feedback. With application of MIMO feedback linearization theory, we can realize linearization of the hybrid suspension system. Then PIDB (proportion, integral, differentiation, magnetic flux density B) controller was designed. Some hybrid suspension experiments had been done on CMS04 magnetic suspension bogie of NUDT (National University of Defense Technology) in China. The experiment results denote that hybrid suspension control algorithm based on magnetic flux signal feedback designed has more advantages than traditional position-current double cascade control algorithm. Obviously the robustness and stability of hybrid suspension system have been enhanced.

scholarly journals The Efficiency of Hand Sanitizers Against Microbes From Coins

2021 ◽  
Author(s):  
sandy yasser hashash ◽  
Wafaa Menawi ◽  
Suha Hashash ◽  
Iman Namrouty ◽  
Hana Bashoti ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Research Group ◽  
Health Sciences ◽  
Microscopical Examination ◽  
Taxi Drivers ◽  
Hand Sanitizer ◽  
National University ◽  
Plastic Bag ◽  
Repeated Use ◽  
Sterile Plastic

Abstract Objective:This study aimed to examine the effectiveness of hand sanitizers against bacteria from circulating coins during COVID 19 era.Method:22-coin samples have been collected by the research group from taxi drivers in Nablus city, Then the samples were transferred in a sterile plastic bag to the Microorganism Laboratory (17B1140) at the Faculty of Medicine and Health Sciences at An-Najah National University. The collected coins were swabbed with normal saline and cultured on nutrient agar for enrichment. After their appearance, the grown colony has been sub-cultured on Blood, MacConkey, and Uri select, for identification with the assistance of microscopical examination and chemical tests for confirmation. To answer the question of the study, four different sanitizers have been applied to measure their antimicrobial activity against microbes from circulating metal coins. Result:The results showed that sanitizer A (Hand sanitizer gel) (ג'ל להיגיינת הידיים ללא צורך , בשטיפה ובמים) is the most effective one of the four sanitizers that were used, followed by sanitizer (D)(HiGeen )(JO), then sanitizer (C)(National ) (PS), while sanitizer (B)(Icona London) (UK) was the least effective one.Conclusion:The research group have conducted research on coins circulated from taxi drivers during COVID 19 era, hence the number of isolated bacteria was low, due to the current sterilization and prevention behaviors like the using of sanitizers containing 70% of alcohol, which was the best among the used types in the current study as well as it has been observed that excessive use of alcohol- based hand sanitizers can cause microorganisms resistant and or less affected to repeated use of hand sanitizer. Hence, Hand sanitizers may need to be used appropriately in combination with other procedures.

scholarly journals Experimental verification of the effectiveness of the Methodology of Physical Therapy of female students of Higher Education Institutions after treatment of Coronavirus disease (COVID-19)

2021 ◽  
pp. 110-117
Author(s):  
Olexandr Khatsaiuk ◽  
Liudmyla Rusyn ◽  
Daria Vaniuk ◽  
Anna Slatvinska ◽  
Denys Stetsenko ◽  
...  
Keyword(s):  
Higher Education ◽  
Physical Therapy ◽  
Research Group ◽  
Higher Education Institutions ◽  
Scientific Research ◽  
Statistical Correlation ◽  
Female Students ◽  
National University ◽  
Actual Direction ◽  
Coronavirus Infection

Today the actual direction of Scientific Research is the search for effective and efficient drugs against Coronavirus Disease, as well as the development and testing of applied Methods, Pedagogical Models (Technologies) of Physical Therapy for women with Higher Education after treatment of Coronavirus infection (COVID-19). The main Purpose of the Scientific Research is an Experimental test of the effectiveness of the author's Method of Physical Therapy for women with higher education after treatment of Coronavirus infection (COVID-19). During the Experimental work, members of the Research Group used the following Research Methods: abstraction, analysis and synthesis, induction and deduction, modeling, mathematical and statistical (correlation analysis, factor analysis, scaling) тощо. As a Result of Empirical Research, members of the Research Group developed and tested the author's Method of Physical Therapy for women with Higher Education (on the example of female students of the Faculty №6 of Kharkiv National University of Internal Affairs) after Treatment of Coronavirus infection (COVID-19). Prospects for Further Research in the chosen field of Scientific Research include the development of Methods for the Formation of Techniques for the application of Physical Measures by female students of Higher Education Institutions with Specific Training Conditions, which train personnel for the National Police of Ukraine in Special Physical Training using Modern Technical Means.

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