1,721,059 research outputs found
Entrepreneurial Finance and Non-diversifiable Risk
No full textWe develop a dynamic incomplete-markets model of entrepreneurial firms, and demonstrate the implications of nondiversifiable risks for entrepreneurs' interdependent consumption, portfolio allocation, financing, investment, and business exit decisions. We characterize the optimal capital structure via a generalized tradeoff model where risky debt provides significant diversification benefits. Nondiversifiable risks have several important implications: More risk-averse entrepreneurs default earlier, but choose higher leverage; lack of diversification causes entrepreneurial firms to underinvest relative to public firms, and risky debt partially alleviates this problem; and entrepreneurial risk aversion can overturn the risk-shifting incentives induced by risky debt. We also analytically characterize the idiosyncratic risk premium.Research Grants Council of Hong Kong (project 643507
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
A Study on Director and Controlling Shareholder Obligation to Avoid Conflict of Interests from the Requirement of Article 178 of Company Act for Abstaining from Voting Rights
No full text本文主要探討表決權迴避制度是否可作為董事暨控制股東利益衝突的防免之道，以及是否有其他方式更適合作為防免方法。首先探究表決權之性質，藉以批判存有利益衝突時，董事/股東表決權迴避制度是否各有其正當性。接著於整理實務最高法院關於表決權迴避制度之判決，瞭解實務現實上之運作後，再藉由觀察三個具有爭議性的併購案例，從中獲取教訓與啟發。 在面對董事與公司利益衝突時，我國現行法下股東或監察人，是否有獲取公司內部資訊管道，而得以介入的空間，恐怕存有疑問；又在我國法下，似乎認為表決權迴避即可解決問題，而忽視結構上偏差的問題；董事遵守表決權迴避後之責任為何，也欠缺討論。 另外，當控制股東與公司利益衝突時，我國係採影子董事之規範模式，而不同於美國直接課予控制股東忠實義務之作法。當控制股東與少數股東存有利益衝突時，其核心問題即在於我們要如何保護少數股東當初投資的合理期待，我國現行法下卻欠缺相關救濟管道。This dissertation aims at discussing whether requirement of abstaining from voting rights could be taken as the solution to conflict of interests, and whether there are better solutions. First of all, this dissertation discusses the nature of voting rights to question justification of requirement of abtstaining from voting rights when there is conflict of interests. And then collect the related verdicts and observe three controversial M&A cases to learn a lesson and arouse some inspiration. Involving the conflict of interests between directors and the corporation, it’s doubtful whether the shareholders or supervisors could obtain the necessary information to intervene the suspicious transaction in Taiwan. Moreover, abstaining from voting rights could not remove the structural bias, but there’s no further resolution in Taiwan. And it’s not clear whether there lies responsibility after the directors follow requirement of abstaining from voting rights. When relating to conflict between controlling shareholders and the corporation, Taiwan adopts the legistlative patterns of shadow directors, unlike the US imposing fiduciary duty on controlling shareholders. With regard to conflict between controlling shareholders and minority shareholders, Taiwan does not provide relief and subsidies
Image Deblurring Technologies for Large Images and Light Field Images
No full text 影像處理是個熱門的研究課題，本篇論文分為兩個研究方向，首先介紹的是模糊影像方面的技術，次為光場相機的應用技術。 目前已有許多影像解模糊的文獻，其中研究可分為二：盲目解迴旋、非盲目解迴旋，這篇主要探討為在高解析影像下有效率的解決非盲目解迴旋的問題。 高解析影像的資料量使得解模糊運算複雜度大量的提升，我們希望能以更短的時間來達成解模糊，所以採用了2009年Krishnan所提出的快速影像反摺積。為了解決高運算複雜度的問題，我們使用了區塊影像解模糊的方法，並透過運算複雜度找出最佳的子影像切割數量，再將子影像拼湊成完整的影像，但是直接拼湊會造成塊狀效應，所以子影像間必須部分重疊且給予線性權重，才能解決塊狀效應。而重疊部分的多寡決定了運算時間及成果，重疊部分越少運算時間越少，但成果越差。為了取得一個平衡，我們選擇了一個特定的重疊大小，能兼顧效率及成果。 另一個要介紹的是光場相機，光場相機單次拍照就能捕捉到一般影像並且額外提供影像的角度及位置資訊，藉此我們能重建場景深度，以此估測出影像內物體的景深。 光場相機是以鏡片陣列組成而產生子影像陣列，我們必須先計算每個子影像的偏移量，才能重建完整影像。其中我們會使用四元樹更精確計算出偏移量，白場影像來補償子影像周圍較暗的問題，使用影像繪圖法增加重建影像品質。 影像重建完成後，我們將以影像分割技術，對影像中的物體個別分割，再以每個物體為單位，藉由其偏移量估測出其景深，以此重建出整個影像的景深圖及每個物件的景深距離。 Image processing has been developed for a long time. This paper can be separated into two parts. We will introduce the proposed techniques of image deblurring at first. Then the proposed light field deblurring algorithm will be introduced. The literatures of image deblurring can be categorized into two classes: blind deconvolution and non-blind deconvolution. First, we try to improve the efficiency of non-blind deconvolution in ultra-high resolution images. The complexity of deblurring is raised in ultra-high resolution images. Therefore, we try to reduce the computation time. We modified the algorithm “Fast Image Deconvolution” proposed by Krishnan in 2009. To reduce complexity, we process the image in block, and find the optimal division that can minimize the complexity. Merging the result of each block directly will cause blocking effect, so it should be overlapped between sub-images with linear weight. The size of overlapping decided our computing time and performance. Less overlapping is more efficient but leads to worse performance. For balance, we choose a specific size of overlapping which give consideration both efficiency and performance. Another topic is light field deblurring. A light field camera can capture the location and the angle information from a single shot. Thereby, we can reconstruct the depth of scene and stereoscopic images can be obtained. A light field camera is composed by the array of lens. We will obtain sub-images by every lens. If we want to render the image, we have to obtain the disparity of each microimage pair and hence we can estimate the information of the depth. At first, we obtain the relationship among microlenses by using regression analysis. Then, we take white image into consideration to compensate the luminance of the edge of every microimage and use quad-trees to compute disparity more precisely. Moreover, we use the image-based rendering technique to improve the quality of the reconstructed image. After rendering image, we use the technique of image segmentation. Then, every object will be cut apart. We estimate the depth of every object by the disparity, and hence we can reconstruct the depth map of the whole image
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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