6,128 research outputs found

    The Asymmetric Impulse of the Sunshine Effect on Stock Returns and Volatilities

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    This study constructs a variety of GARCH models with the consideration of the generalized error distribution to analyze the relationship between the cloud cover and stock returns in Taiwan in the whole sample period (1986 to 2007) and in the two sub-sample periods (1986 to 1996 and 1997 to 2007). The data include Taiwan Stock Exchange Capitalization Weighted Stock Index and the U.S. Dow Jones Industrial Average index to proxy the impact of U.S. stock market on Taiwan’s stock market performance. The empirical finding of this study could be used to reconfirm the existence of the so-called sunshine effect. The empirical results suggest that the cloud cover has significantly negative impact on Taiwan’s stock market, especially in the low cloud cover periods. Moreover, we also examine the sunshine effect with the consideration of the first and second moments and find that when adding the two moments, the sunshine effect is not significant in the stock returns but in the stock return volatilities, which is different from outcomes in previous studies.behavior finance, stock returns, stock volatility, Sunshine effect, Threshold model

    Peaceful Settlement of Disputes in the South China Sea through Fisheries Resources Cooperation and Management

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    The South China Sea dispute is complicated in terms of its nature, the sovereignty issues of the islands, delimitation issues, resources utilization as well as other matters concerning security (both traditional and non-traditional). In order to solve the dispute, cooperation is one of the main considerations. However, the practice has not been realized. In order to solve the dispute and promote cooperation in the South China Sea region, the author suggests that conserving and managing fishery resources could be established as a starting point. There are a great number of management means, institutions, and international instruments (such as conventions, treaties and arrangements), which have been developed to protect fish stocks. Nonetheless, these policies should be practiced in an integrated mechanism at the national, regional, and international levels, so that the policy objectives could be accomplished. The South China Sea, the East China Sea, and Yellow Sea comprise a large marine ecosystem (LME) in East Asia. In other words, any change of the marine ecosystem could create a serious impact on other maritime areas. This paper suggests that a regional fisheries management organization is needed in order to conserve and manage the fishery resources in the South China Sea, which could also influence other maritime areas. Furthermore, it is also the purpose of this paper that such a model could contribute the solution to the dispute in the South China Sea

    Weak Measurement of Qubit Oscillations with Strong Response Detectors: Violation of the Fundamental Bound Imposed on Linear Detectors

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    We investigate the continuous weak measurement of a solid-state qubit by single electron transistors in nonlinear response regime. It is found that the signal-to-noise ratio can violate the universal upper bound imposed quantum mechanically to any linear response detectors. We understand the violation by means of the cross-correlation of the detector currents.Comment: 4 pages, 4 figure

    Glass Beads in Iron-Age and Early-Modern Taiwan: An Introduction

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    Archaeological research has revealed a long history of glass bead exchange and use in Taiwan, yet it has seldom been discussed in the literature. This paper provides an introduction to this exchange from the Iron Age (ca. late 1st millennium BC – mid-2nd millennium AD) to the early modern period (ca. AD 1600-1900) by revisiting the archaeological and historical records. It is suggested that changes in bead styles and chemical compositions over time reveal the transition of bead supply in Taiwan, which further reflects two broad phases of bead trade: Phase I) the earlier involvement of Taiwan in the Indo-Pacific bead exchange (1st millennium AD) and Phase II) the later cultural and economic contacts between the indigenous people, Chinese merchants, and Europeans (2nd millennium AD)

    SENSE PERCEPTION AND TESTIMONY IN THE GOSPEL ACCORDING TO JOHN

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    This thesis aims to contribute to Johannine scholarship on sense perception and testimony. While the focus has tended to be on one or the other, this thesis shows that sense perception and testimony are used together in John with the intention of drawing the readers into the narrative so that they become witnesses in an emotionally engaged way. The first chapter outlines the focus of the thesis and presents the history of scholarship on sense perception and testimony. In Chapter 2, we survey the Johannine use of sense perception and testimony to show that there is a prima facie case for regarding sense perception as important in giving testimony about God. In Chapter 3, we argue that John is writing to believers to strengthen their faith. The next two chapters survey possible influence on the Johannine use of sense perception in relation to testimony within the Jewish Scripture and the rhetorical dimension of Hellenistic culture. The sixth to eighth chapters examine the Gospel itself. In Chapter 6, we discuss how, for John, sense perception is theologically important in coming to a knowledge of God. In Chapter 7, we look at testimony during Jesus’ public ministry to see how John emphasises physical sense perception through signs and other types of testimony, such as the incidents involving the Samaritan woman and the anointing at Bethany. In Chapter 8, we argue that sense perception and testimony continue to work together within the community after Jesus’ death and resurrection. Our investigation shows that John’s use of sense perception together with testimony is rooted in Jewish literature. John also employs a rhetorical technique which appeals to the persuasive power of sense perception to make his narrative vivid. John does not downplay sense perception. Rather, he uses it in the context of testimony as a means of persuasion to draw the readers, in their imagination, into the experience of the first disciples and thus deeper into faith and witness

    HAQ: Hardware-Aware Automated Quantization with Mixed Precision

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    Model quantization is a widely used technique to compress and accelerate deep neural network (DNN) inference. Emergent DNN hardware accelerators begin to support mixed precision (1-8 bits) to further improve the computation efficiency, which raises a great challenge to find the optimal bitwidth for each layer: it requires domain experts to explore the vast design space trading off among accuracy, latency, energy, and model size, which is both time-consuming and sub-optimal. Conventional quantization algorithm ignores the different hardware architectures and quantizes all the layers in a uniform way. In this paper, we introduce the Hardware-Aware Automated Quantization (HAQ) framework which leverages the reinforcement learning to automatically determine the quantization policy, and we take the hardware accelerator's feedback in the design loop. Rather than relying on proxy signals such as FLOPs and model size, we employ a hardware simulator to generate direct feedback signals (latency and energy) to the RL agent. Compared with conventional methods, our framework is fully automated and can specialize the quantization policy for different neural network architectures and hardware architectures. Our framework effectively reduced the latency by 1.4-1.95x and the energy consumption by 1.9x with negligible loss of accuracy compared with the fixed bitwidth (8 bits) quantization. Our framework reveals that the optimal policies on different hardware architectures (i.e., edge and cloud architectures) under different resource constraints (i.e., latency, energy and model size) are drastically different. We interpreted the implication of different quantization policies, which offer insights for both neural network architecture design and hardware architecture design.Comment: CVPR 2019. The first three authors contributed equally to this work. Project page: https://hanlab.mit.edu/projects/haq
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