20,027 research outputs found

    Asymmetric Phase Shifts in the U.S. Industrial Production Cycles

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    We identify the cyclical turning points of 74 U.S. manufacturing industries and uncover new empirical regularities: (i) Cyclical phase shifts are highly concentrated around the aggregate turning points; (ii) In contrast to the conventional notion of a sudden stop and slow recovery, troughs are much more concentrated than peaks; (iii) Occurrences of phase shifts across industries support the spillovers through input-output linkages; (iv) The common macroeconomic shocks, such as exogenous changes in the federal funds rate, government spending, and oil prices, are significant drivers of industrial phase shifts; (v) Both monetary and fiscal policy shocks are more effective in recessions.Business cycles; Comovement; Turning points; Asymmetries

    Moisture-triggered physically transient electronics

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    Physically transient electronics, a form of electronics that can physically disappear in a controllable manner, is very promising for emerging applications. Most of the transient processes reported so far only occur in aqueous solutions or biofluids, offering limited control over the triggering and degradation processes. We report novel moisture-triggered physically transient electronics, which exempt the needs of resorption solutions and can completely disappear within well-controlled time frames. The triggered transient process starts with the hydrolysis of the polyanhydride substrate in the presence of trace amounts of moisture in the air, a process that can generate products of corrosive organic acids to digest various inorganic electronic materials and components. Polyanhydride is the only example of polymer that undergoes surface erosion, a distinct feature that enables stable operation of the functional devices over a predefined time frame. Clear advantages of this novel triggered transience mode include that the lifetime of the devices can be precisely controlled by varying the moisture levels and changing the composition of the polymer substrate. The transience time scale can be tuned from days to weeks. Various transient devices, ranging from passive electronics (such as antenna, resistor, and capacitor) to active electronics ( such as transistor, diodes, optoelectronics, and memories), and an integrated system as a platform demonstration have been developed to illustrate the concept and verify the feasibility of this design strategy

    Brain-Switches for Asynchronous Brain−Computer Interfaces: A Systematic Review

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    A brain–computer interface (BCI) has been extensively studied to develop a novel communication system for disabled people using their brain activities. An asynchronous BCI system is more realistic and practical than a synchronous BCI system, in that, BCI commands can be generated whenever the user wants. However, the relatively low performance of an asynchronous BCI system is problematic because redundant BCI commands are required to correct false-positive operations. To significantly reduce the number of false-positive operations of an asynchronous BCI system, a two-step approach has been proposed using a brain-switch that first determines whether the user wants to use an asynchronous BCI system before the operation of the asynchronous BCI system. This study presents a systematic review of the state-of-the-art brain-switch techniques and future research directions. To this end, we reviewed brain-switch research articles published from 2000 to 2019 in terms of their (a) neuroimaging modality, (b) paradigm, (c) operation algorithm, and (d) performance

    A Library Toolbar for Busy Professors and Staff

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    Lack the time to visit the library? Even too busy to check out the library\u27s web site? Cannot quickly find the databases you need? Cannot find the right service desk to receive help? This toolbar is absolutely for you! It is built into your favorite internet browser, Internet Explorer or Firefox. Whenever you get on the Internet at your computer, the library is right at your finger tips. It is fun! It is amazing! Come see the magic of the library toolbar

    Library 2.0: Not Your Grandmother\u27s Library

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    Price Stabilization in the Taiwan Hog and Broiler Industries: Evidence from a STAR Approach

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    The paper examines the effectiveness of the price stabilization mechanism for the broiler and poultry industry in Taiwan during the period 1999 to 2008. After presenting some background information on the domestic marketing system and price stabilization mechanisms for the broiler and pork industry in Taiwan, the paper discusses the smooth transition autoregressive (STAR) methodology. Monthly hog and broiler price data from 1999 to 2008 at farm, import and retail levels are analyzed using the nonlinear, non-asymmetric logistic STAR model in order to determine price transmission structure. A price threshold parameter is used so that price transmission levels can vary, thereby allowing an examination of the efficacy with which the hog and broiler price stabilization mechanisms take effect.Broiler industry, Pork industry, Price stabilization, Domestic marketing system, Smooth transition autoregressive (STAR) methodology

    Research on Relief Loans in Taiwan Banking System

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    Due to geographical position, Taiwan is frequently invaded by natural disasters, especially typhoons and earthquakes. These disasters cause hundreds of deaths and huge damages of properties in suffered areas. For instance, in 2009, Typhoon Morakot brought catastrophic damages. Hundreds of people died and enormous losses were caused in southern Taiwan. Taiwan is a warm island. When catastrophe occurs, donations and supplies throughout Taiwan would flood into stricken regions immediately to help sufferers pass through their difficulties. At the same time, the government would send numerous search-and-rescue teams into the areas and deploy relief measures to help sufferers rebuild their homes. As a member of Taiwan’s society, banks should do their best to help sufferers from sorrows. Therefore, after disasters, banks in Taiwan immediately provide favorable loans to help victims. These specific loans, with lower interest rates and easier application procedures, will give victims substantial helps to be back to normal lives. This article mainly focuses on relief loans and details are described in separate chapters. The content covers funding sources, eligible applicants, applicable scope, loan amount, repayment methods, interest rate, and application procedures
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