A5102744050- Radiation Detection and Scintillator Technologies
- Medical Imaging Techniques and Applications
- Food Supply Chain Traceability
- Advanced X-ray and CT Imaging
- Advancements in PLL and VCO Technologies
- Microwave and Dielectric Measurement Techniques
- Cultural Industries and Urban Development
- Smart Agriculture and AI
- Neural Networks and Applications
- Advanced Numerical Analysis Techniques
- Acoustic Wave Resonator Technologies
- Innovative Teaching and Learning Methods
- Stability and Controllability of Differential Equations
- Microwave Engineering and Waveguides
- Advanced Optimization Algorithms Research
- Animal Behavior and Welfare Studies
- Advanced Mathematical Modeling in Engineering
- Advanced Semiconductor Detectors and Materials
- Millimeter-Wave Propagation and Modeling
- Photocathodes and Microchannel Plates
- Teaching and Learning Programming
- Radio Frequency Integrated Circuit Design
- Atomic and Subatomic Physics Research
- Photonic and Optical Devices
- Bluetooth and Wireless Communication Technologies
Tsinghua University
2000-2025
University of Science and Technology Beijing
2019
Tiangong University
2010-2016
Waterford Institute of Technology
2013-2014
University of Botswana
2007
Weinan Normal University
2005
The University of Texas MD Anderson Cancer Center
2002-2003
The energy spectrum for a cadmium zinc telluride (CZT) detector has low tail due to incomplete charge collection and intercrystal scattering. Due these solid-state effects, scatter would be overestimated if the conventional triple-energy window (TEW) method is used crosstalk corrections in CZT-based imaging systems. objective of this work develop correction (99m)Tc/(123)I dual-radionuclide dedicated cardiac SPECT system with pinhole collimators (GE Discovery NM 530c/570c).A tailing model was...
The PMT-quadrant sharing (PQS) detector design allows very high resolution detectors to be built with 70% fewer PMTs and lower cost. A common concern for the is that there a big gap (photo-insensitive area) between four circular photoelectron signal (pulse height) may much central crystals. increases use of smaller high-resolution designs because small have relatively thicker walls larger tolerance spaces them. authors measured pulse heights energy each crystal in three different types PQS...
With the development of economy and improvement people's living standards, dairy products, as a high nutritional value food, are increasingly becoming an essential food in daily life consumers, demand for products is increasing. However, recent years, taking melamine incident leather milk examples, there have been many quality safety accidents which lead to lack confidence consumers also exposed supervision domestic products. In this regard, state has repeatedly issued policies regulations...
The activity amount of dairy cows can reflect the health status cows. For farms, because large number cows, it takes time and effort to observe each cow manually, is difficult all day. In order reduce labor save cost, project designed a monitoring early warning system, which mainly composed Wi-Fi module, detection, GPS main controller, alarm control PC terminal. controller stm32f103c8t6 single chip microcomputer processes data sensor, obtains positioning data, judges whether abnormal, then...
A high resolution detector is being developed for our small animal position emission tomography (MicroPET). Each scintillation event mapped in a two dimensional (2-D) through the relative ratio of output signals PMTs. Crystal Look-up table (CLT) used ThuMicroPET scanner defines matching relation between signal detected to corresponding pixel location. It has direct impact on imaging quality and brings significant influence gantry overall performance. This paper compares Fuzzy C-Means (FCM)...
A free-space broadband measurement technique is proposed to determine the dielectrics properties of powders and liquids [1]. Two techniques are presented based on horizontal vertical propagation, both which allow for a series measurements be taken where varying parameter thickness material under test (to overcome challenge unknown electrical length). The propagation would require an extra containment layer liquids, have consequent mechanical also computational difficulties. other hand show...
In this paper, the H <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">∞</sub> piecewise control problem is discussed for linear parabolic distributed parameter systems (DPSs) with observation in space. An performance constraint provided paper to solve effect caused by measurement disturbance. First, a static feedback controller designed collocated space, then an observer-based dynamic non-collocated By Lyapunov technique, it has been proved that...
Arrays of scintillation crystals optically coupled to four single-anode photomultipliers (PMT) are commonly used in PET cameras. The accuracy the crystal-position decoding relies on relative gain stability all 4 PMT over time. drift one other three distorts two dimensional (2-D) crystal-decoding map and causes wrong crystal assignment a gamma hit. We have studied its effect 2-D using Philips XP1911 (19 mm diameter) quadrant-sharing mode (PQS) position-sensitive BGO array (7/spl times/7)...
Abstract Geometer Sketchpad and MSW Logo programs have been introduced in Bachelor of Science Education degree courses along with other software including a course on ICT mathematics education at the University Botswana. is known as tool dynamic geometry Logo, basically programming language. Current trends instruction involving technology tend to avoid language some critics argue that was now given less prominence enhancement thinking skills. In this paper, both are used illustrate how...
The design of a high resolution small animal positron emission tomography (MiroPET) camera was presented. This MicroPET has 10 photomultiplier tube (PMT)-Sharing-modular detectors. Each detector 21 PMTs decoded with 180 BGO(Bi <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</sub> Ge xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> O xmlns:xlink="http://www.w3.org/1999/xlink">l2</sub> ) crystal elements. A new and low cost Time-to- Digital...
Different varieties of kiwifruit have different storability, but in the same kind kiwifruit, late maturing variety is generally more storable than medium variety, and early variety. Therefore, it necessary to classify manage storage Kiwifruit maturity periods. For management large-scale cold storage, maturity, time, location other complex information need be associated. The traditional relies on manual recording this information, which time-consuming, laborious, inefficient unreliable....
A system of variational inequality and fixed point problems is considered.Two algorithms have been constructed.Our can find the minimum norm solution this problems.
Wireless access into and out of buildings is a fundamental requirement current future successful handheld device usage. A number factors, guided by energy efficiency, can negatively influence the propagation such wireless signals through building envelope.This work examines commonly used materials in terms their attenuation on frequencies from 800-6000MHz concludes that external doors are final remaining opening
The goal of this study was to investigate scatter photon cross-talk in two SPECT/CT imaging systems when performing SPECT and CT scans for the same axial field view (FOV) simultaneously. Monte Carlo simulation software, Geant4 Applications Emission Tomography(GATE), employed investigation. first system a clinical with similar geometrical configurations as Philips BrightView XCT. We compared projections energy spectrums X-ray photons scattered by different objects then detected camera...
With beginning of analysis in the relation and difference between Creative Industry Culture from tow point views birth history its inbeing, this paper gives feasibility Industry. And, studies circumstances around Binhai New District so as to give CI-CM model, which based on 'fast path' model for development At end paper, we conditions superiority application market, cost, investment, protection knowledge property right etc views. So get conclusion: should develop using advance light...
Abstract Under the condition that local facilities are completely destroyed and use site changes frequently, it is of great significance to realize rapid convenient establishment satellite communication links at both ends ground meet emergency communication. A kind fully automatic portable terminal designed, which integrates common equipment highly, hardware software each equipment, completes link parameter setting by using keyboard operation laptop computer, can automatically complete...