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A compact microstrip rat-race hybrid with a wideband characteristic and a miniaturized area employing microstrip lines and strip lines circuit is reported in this paper. The proposed hybrid has been fabricated with a multilayer print circuit board technology to benefit from a high level of integration. The footprint of the proposed design occupies 50% of the area of the conventional similar design...
As the further study of agency theory, managerial entrenchment provides a new perspective to explain corporate financial decisions. Capital structure of listed companies in China has deviated from the goal of shareholders' wealth maximum. Based on this objective phenomenon, this thesis makes the theory analysis of the impact of managerial entrenchment on capital structure. Then using the financial...
Electromagnetic launch (EML) system has such advantages as high thrust, good controllability, reusable, etc., and so it will be widely used in the future. As a launching motor, a double-side plate permanent magnet linear synchronous motor (PMLSM) can provide high instantaneous thrust. According to the characteristics of the EML, this paper studies the thrust characteristics of double-side plate PMLSM...
With the development of IT, mobile OA is getting more and more important in government, enterprises and institutions. The traditional OA solutions, for the defect of its combination with mobile equipment, limit the application to mobile OA. This paper introduces a typical representative frame of mobile OA system and puts forward a Web Service communication mode based on GPRS to resolve the data transmission...
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