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The Measurement of People’s Satisfaction on Public Safety and Police Service
Chang Charles (Kuang-Ming),Wang Tsu-Shea 아시아경찰학회 2006 Asia Pacific Journal of Police & Criminal Justice Vol.4 No.1
In American police history, supervisor’s judgment, crime reports and public opinion investigation have been used as indicators to measure police performance. Contemporarily, public opinion investigation is the most important indicator because it is the instrument to measure citizen satisfaction, a major dimension of police performance in community problem-solving era.<BR> Page and Shapiro (1992) noted that public opinion is rational and stable; public opinion does change, but the change is incremental and predictable; a sudden change of public opinion can be traced to a certain events. Longitudinal data of polls conducted by independent institutions demonstrated that Taiwanese attitude and perception toward public safety is stable, incremental and predictable too. This paper shows the national trend of polls on Taiwanese sense of public safety. In addition, differences among counties and cities will be compared.
Max-throughput interference avoidance mechanism for indoor self-organizing small cell networks
Kuang-Hsun Lin,Cho-Hsin Tsai,Jen-Wei Chang,Yu-Chieh Chen,Hung-Yu Wei,Fu-Ming Yeh 한국통신학회 2017 ICT Express Vol.3 No.3
Since mobile traffic has been growing recently, the deployment of indoor small cells has become an attractive solution to enhance coverage. However, the increasing density of cells makes inter-cell interference more considerable. In this paper, we propose a max-throughput Interference Avoidance (MTIA) centralized algorithm to improve the system’s throughput. Based on signaling and reports, a central controller connected to each base station can properly turn off base stations that may induce a relatively strong interference, and thus increase SINR. We implemented the MTIA algorithm in an LTE TDD network simulation and showed that MTIA effectively reduces inter-cell interference and improves the system’s throughput.
Reducing Hysteresis Effect of Force Actuator in a Scanning Probe Microscope
Po-Kuang Chang,Jium-Ming Lin 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
This research is to use only PI controllers to reduce the hysteresis effect of a force actuator for a Scanning Probe Microscope (SPM). Comparisons with the previous design with Linear Velocity Transducer (LVT) for inner-loop feedback compensation are also made. Generally, the phase margins are larger for the newly proposed method. This improvement has been verified by MATLAB simulation and practical implementation to reduce the hysteresis effect of the force actuator. Thus the new design is cheaper and valuable.
Yang-Chang Tu,Kuang-Yu Chen,Chung-Kung Chen,Ming-Chu Cheng,Shu-Hwae Lee,Ivan-Chen Cheng 대한수의학회 2019 Journal of Veterinary Science Vol.20 No.1
Monoclonal antibodies (MAbs) are widely applied in disease diagnoses. Herein, we report a MAb, WF-4, against Influenza A virus nucleoprotein (NP), its broad response with Influenza A virus, and its application in an immunohistochemistry (IHC) assay. WF-4 was screened by immunofluorescence assay (IFA). The results showed that its reactivity with baculovirus-expressed full-length recombinant NP (rNP) in Western blot (WB), indicating its IHC applicability. Fifteen Influenza A virus (reference subtypes H1 to H15) infected chicken embryonated chorioallantoic membranes (CAM), fixed by formalin, were all detectable in the WF-4-based IHC assay. Also, the reactivity of the IHC test with NP from experimentally inoculated H6N1 and from all recent outbreaks of H5 subtype avian Influenza A virus (AIV) field cases in Taiwan showed positive results. Our data indicate that CAM, a by-product of Influenza A virus preparation, is helpful for Influenza A virus-specific MAb characterization, and that the WF-4 MAb recognizes conserved and linear epitopes of Influenza A virus NP. Therefore, WF-4 is capable of detecting NP antigens via IHC and may be suitable for developing various tests for diagnosis of Influenza A virus and, especially, AIV infection.
The Technical Benefits of Future GNSS for Taiwan
Kai-Wei Chiang,Ming Yang,Meng-Lun Tsai,Yao-Yun Chang,Chi-Kuang Chu 한국항해항만학회 2006 한국항해항만학회 학술대회논문집 Vol.2 No.-
The next decade promises drastic improvements and additions to global navigation satellite systems (GNSS). Plans for GPS modernization include a civilian code measurement on the L2 frequency and a new L5 signal at 1176.45MHz. Current speculations indicate that a fully operational constellation with these improvements could be available by 2013. Simultaneously, the Galileo Joint Undertaking is in the development and validation stages of introducing a parallel GNSS called Galileo. Galileo will also transmit freely available satellite navigation signals on three frequencies and is scheduled to be fully operational as early as 2008. In other words, a dual system receiver (e.g., GPS+GALILEO) for general users can access six civil frequencies transmitted by at least fifty eights navigation satellites in space. The advent of GALILEO and the modernization of GPS raise a lot of attention to the study of the compatibility and interoperability of the two systems. A number of performance analyses have been conducted in a global scale with respect to availability, reliability, accuracy and integrity in different simulated scenarios (such as open sky and urban canyons) for the two systems individually and when integrated. Therefore, the scope of this article aims at providing the technical benefits analysis for Taiwan specifically in terms of the performance indices mentioned above in a local scale, especially in typical urban canyon scenarios. The conclusions gained by this study will be applied by the Land Survey Bureau of Taiwanese as the guideline for developing future GNSS tracking facilities and dual GNSS processing module for precise surveying applications in static and kinematic modes.
Jian-Zhe Huang,Li-Hung Lin,Chin-An Chang,Chi-Te Liang,Kuang Yao Chen,Kui-Ming Chen,N. C. Chen,P. H. Chang,Shiou-Shian Han,Zhi-Hao Sun 한국물리학회 2007 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.50 No.3
We report on experimental studies of an Al$_{0.15}$Ga$_{0.85}$N/GaN high-electron-mobility transistor structure grown on a $p$-type Si (111) substrate. This structure is compatible with complementary metal-oxide-semiconductor (CMOS) technology and, thus, has great potential device applications. The low-temperature magnetoresistivity shows a parabolic dependence on the applied perpendicular magnetic field. This effect is ascribed to electron-electron interaction (EEI) effects in a weakly-disordered two-dimensional system. Our experimental results agree with the EEI theory when the correction term in the ballistic region has been subtracted.