1,138 research outputs found

    Personnel Organization in the Republic of China--The Reorganization of 1967

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    At the end of 1967, the Chinese government promulgated an administrative decree on delegation of authority, and established the Personnel Bureau directly under the Executive Yuan. These two occurrences, from the administration point of view, are milestones in the renovation of the Chinese Republic in modern history.. The aim of these actions is to improve the conduct of government and inspire efficiency in government personnel--problems encountered in government. Progress involves the analysis of theories of public administration as well as the practical problems presently existing in the government. The scope of this thesis does not permit consideration of the problems of the government and government personnel in their entirely. The main descriptions are concentrated on the following: A. The problems encountered: the background and cause of the existing personnel administrative system in the government, and how to affect to the field of personnel problems. B. The concrete content of the major change in the personnel organization in 1967, and how these actions might dispel the difficulties in the Chinese bureaucracy. The study is based on the assumption that Chinese governmental organization forms and practices could be compared with the practices of the Western nations and with the prescriptions and descriptions of leading textbooks and monographs. Certain differences in the Chinese system might then profitably be redressed to conform to the Western model. Consequently, the study first compares practices with the model. Certain of the descriptions of the Chinese practices and mode of organization are based upon my own translation of Chinese studies, reports, and documents. Extensive use was also made of data obtained in a 1963 sample survey of the Chinese bureaucracy conducted by Professor Chang for the Chinese Association of Personnel Administration. The thesis is developed in five chapters of which the first is employed to set out a short description of the traditional examination system and the organization of the government. Chapter II describes the characteristics of the present bureaucracy and examines the administrative process and personnel machinery. The third chapter focuses on current problems in personnel management and the fourth describes the major changes occurring in 1967 as a result of an extended reorganization study.Chapter V sets out a brief conclusion and a set of recommendations. Findings made in the thesis include the following: The fact that executives do not want to delegate authority to their workers is directly related to the centralized type of organization. One of the purposes of adopting centralization is to maintain control over the machinery of administration. For this reason, executives have to depend primarily on a body of precise, complicated laws and rules. However, before long the laws and rules fail to act as a restraint upon worker behavior and the executives resort to the help of confidential appointments. This practice disrupts the personnel system, blocking out opportunities for other workers to get promotions, and in turn, deepening their sense of dissatisfaction with the organization. As a result, the situation is made worse with respect to efficiency and worker performance. On the other hand, the independence and power of the personnel organization over administration causes a duplication of supervision over personnel workers and results in conflicts between the administrative organization and the examination system, thus breaking down the integration of administrative authority in an important aspect of personnel administration. The inadequate system and improper rules are left untouched and even good rules are only on paper and are not realistically practiced. As a result, examinations are divorced from employment and young and able people are prevented from entering government service. Efficiency evaluation is but a formality, and elimination of the inefficiency is impossible. Under such circumstances, it is useless to talk about the improvement of the quality of workers. All these factors are something like a chain consisting of a series of rings which have bound the government agencies so tightly that there is no room for their movement. This chain of reactions constitutes the very problems existing in the administrative machinery. This binding chain can be broken only through the reorganization and re-orientation of personnel management. That is why, in 1967, the Chinese government adopted two measurements designed to adjust the authority as it relates to the machinery of organization. One is the system of delegation of authority, based on the importance of position, which is being realized through division of responsibility. The other is the transference of authority in the field of personnel through the establishment of the Personnel Bureau. It is predictable that the two measures will produce promising effects, for both are not only directed toward the needs of government, but also are consistent with theoretical principles of administration

    Origami Reconfigurable Electromagnetic Systems

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    With the ever-increasing demand for wireless communications, there is a great need for efficient designs of electromagnetic systems. Reconfigurable electromagnetic systems are very useful because such designs can provide multi-functionality and support different services. The geometrical topology of an electromagnetic element is very important as it determines the element’s RF performance characteristics. Origami geometries have significant advantages for launch-and-carry electromagnetic devices where devices need to fold in order to miniaturize their size during launch and unfold in order to operate after the platform has reached orbit. This dissertation demonstrates a practical process for designing reconfigurable electromagnetic devices using origami structures. Four different origami structures are studied and the integrated Mathematical-Computational-Electromagnetic models of origami antennas, origami reflectors and origami antenna arrays are developed and analyzed. These devices provide many unique capabilities compared with the traditional designs, such as band-switching, frequency tuning, polarization adjustment and mode reconfigurability. Prototypes are also manufactured to validate the performances of the designs. These designs change their geometry naturally, and they can be compactly packaged into small volume, which make them very suitable for spaceborne and satellite communication. Origami antennas and origami electromagnetics are expected to impact a variety of applications related to communications, surveillance and sensing

    Intervalley Scattering and Localization Behaviors of Spin-Valley Coupled Dirac Fermions

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    We study the quantum diffusive transport of multivalley massive Dirac cones, where time-reversal symmetry requires opposite spin orientations in inequivalent valleys. We show that the intervalley scattering and intravalley scattering can be distinguished from the quantum conductivity that corrects the semiclassical Drude conductivity, due to their distinct symmetries and localization trends. In immediate practice, it allows transport measurements to estimate the intervalley scattering rate in hole-doped monolayers of group-VI transition metal dichalcogenides (e.g., molybdenum dichalcogenides and tungsten dichalcogenides), an ideal class of materials for valleytronics applications. The results can be generalized to a large class of multivalley massive Dirac systems with spin-valley coupling and time-reversal symmetry.Comment: 5 pages+4 pages of supplemental materials, 4 figure

    Detecting monopole charge in Weyl semimetals via quantum interference transport

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    Topological Weyl semimetals can host Weyl nodes with monopole charges in momentum space. How to detect the signature of the monopole charges in quantum transport remains a challenging topic. Here, we reveal the connection between the parity of monopole charge in topological semimetals and the quantum interference corrections to the conductivity. We show that the parity of monopole charge determines the sign of the quantum interference correction, with odd and even parity yielding the weak anti-localization and weak localization effects, respectively. This is attributed to the Berry phase difference between time-reversed trajectories circulating the Fermi sphere that encloses the monopole charges. From standard Feynman diagram calculations, we further show that the weak-field magnetoconductivity at low temperatures is proportional to +B+\sqrt{B} in double-Weyl semimetals and B-\sqrt{B} in Weyl semimetals, respectively, which could be verified experimentally.Comment: published versio

    Massive Dirac fermions and spin physics in an ultrathin film of topological insulator

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    We study transport and optical properties of the surface states which lie in the bulk energy gap of a thin-film topological insulator. When the film thickness is comparable with the surface state decay length into the bulk, the tunneling between the top and bottom surfaces opens an energy gap and form two degenerate massive Dirac hyperbolas. Spin dependent physics emerges in the surface bands which are vastly different from the bulk behavior. These include the surface spin Hall effects, spin dependent orbital magnetic moment, and spin dependent optical transition selection rule which allows optical spin injection. We show a topological quantum phase transition where the Chern number of the surface bands changes when varying the thickness of the thin film.Comment: 7 pages, 5 figure
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