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Han lin shuo chang zhuan ji dai
No full textLive recording.Possibly reproduced from other commercial recording or radio broadcast (Pending for review)Electronic reproduction from Rulan Chao Pian Betamax collection.Performing group: 漢霖民俗說唱藝術團.Sung in Chinese.Performing group: han lin min su shuo chang yi shu tuan
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe 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
Expression analysis of stathmin family genes in zebrafish embryos
No full text在真核生物，微管在調節細胞生理訊息傳遞的過程中扮演很重要的角色，它能夠穩定細胞骨架以及影響神經發育。有許多不同的微管蛋白能夠調節微管的聚合，其中包含stathmin。stathmin蛋白是一種磷酸蛋白，它可調節微管的聚合，stathmin能夠和兩分子的α-和β-微管蛋白形成的二聚體結合，形成一個四聚體，因此stathmin能夠干擾微管的聚合化和去聚合化。藉由調節微管的聚合和去聚合，stathmin參與了許多不同的細胞訊息傳遞的過程，包括神經形成，細胞的分化和增生。在哺乳類的研究中指出stmn1廣泛的表現在細胞中，而stmn2，stmn3以及stmn4則主要表現在神經系統，在先前我們實驗室的研究，發現在斑馬魚中的一個stathmin蛋白，stathmin 2，在腦部發育中，扮演一個很重要的角色。目前已知斑馬魚中有7個不同的stathmin基因，為了瞭解stathmin在斑馬魚發育中扮演的角色，我選殖出斑馬魚stathmin蛋白的基因stmn 1a，stmn 2b和stmn 4l，發現它們和其他脊椎動物的stathmin蛋白有很高的相似度，並利用全標本包埋的原位雜交技術觀察斑馬魚stathmin蛋白在不同時間點，不同的斑馬魚stathmin蛋白的表現情形。在此研究中我觀察到，stmn 1a和stmn 2b從16小時就會表現在脊髓和三叉神經，但是stmn 4l要從18小時才會開始表現，而stmn 2b和stmn 4l主要會表現在中樞神經系統。此外，stmn 1a也會表現在眼睛，鰓弓以及胚胎的尾端。從24小時後，stmn 1a，stmn 2b和stmn 4l都會表現在下視丘，頭蓋，間腦以及端腦，在48小時後，stmn 2b和stmn 4l仍然會表現在中樞神經系統，不過stmn 1a則沒有表現在後腦。stathmin在中樞神經系統發育中的表現情形，顯示stathmin在斑馬魚中樞神經系統發育上，可能扮演一個很重要的角色。Microtubules are well known to mediate many physiological processes in eukaryotic cell such as stable cell structure and axonal outgrowth. Microtubules can be regulated by different microtubule binding proteins to mediated their assembly and disassembly. Stathmin family proteins are phosphoprotein that regulates microtubules disassembly. Stathmin interacts with microtubules by binding to two moles of alpha and beta tubulin dimer to form a tetramer. Stathmins also interfere with microtubule polymerization by direct binding to microtubules. Via tight regulation of microtubule polymerization and depolymerization, stathmins are involved in different cellular processes, including neurogenesis, cell proliferation, differentiation and activities. In mammals, stmn 1 is ubiquitous expressed while other stathmin members, stmn 2, stmn 3, stmn 4 are mainly expressed in the nervous system. Previously, we have demonstrated that stmn 2, one of the zebrafish stathmin proteins, plays a vital role in zebrafish brain development. There are seven different stathmin genes in zebrafish. To understand the role of stathmin in zebrafish, I have cloned stmn 1a, stmn 2b and stmn 4l and demonstrated that they shared high identity with other vertebrate stathmin homologues. I analyzsed their temporal expression patterns using embryos at different stages by whole-mount in situ hybridization. I observed that stmn 1a and stmn 2b were expressed in spinal cord and trigeminal ganglia from 16 h post fertilization (hpf) but stmn 4l appeared from 18 hpf. stmn2b and stmn4l were mainly expressed in the central nervous system (CNS). Furthermore, the stmn1a transcripts were found in eyes, pharyngeal arches and tail bud. stmn 1a, stmn 2b and stmn4l were all expressed in hypothalamus, tegmentum, telencephalon and diencephalon after 24 hpf. After 48 hpf, stmn2b and stmn4l were still expressed in the CNS while stmn1a did not expressed in hindbrain. The dynamic expression of stathmin family genes in the developing central nervous system suggests a pivotal roles of those genes in regulating CNS development in zebrafish
Development and Characteristic Study of a Linear Magnetorheological Actuator
No full text磁黏滯液體(Magnetorheological Fluid ,MR-fluid)是一種由導磁微粒與載液組成的液體，可以透過磁場來改變其黏滯度，被應用在減振和制動裝置上。本論文利用磁黏滯液體受到磁場變化時所產生的內聚力變化的現象來設計開發主動式線性致動裝置。首先根據磁黏滯致動器功能需求，提出液囊和多樣化磁迴路之設計概念。並透過理論模型以及電腦輔助分析方式，分析探討磁迴路設計和操作參數對通過磁黏滯液體磁場強度之影響。最後以實驗測試對致動器之位移、致動力、及反應速度進行觀察和量測。致動前，致動器驅動電流與磁迴路之工作間隙成正比關係；致動後磁黏滯致動器可產生穩定之致動力。而磁黏滯液體的殘留特黏現象可藉由磁場的消除和壓縮彈簧力予以解除，以提高回復速度。Magnetorheological Fluids, MR-fluids, normally consist of iron powder suspended in some carrier fluids. The viscosity and the yield stress of MR-fluids can be controlled by the applied magnetic filed, thus the main applications of MR-fluids are dampers and breakers. By utilizing the condensation force of the MR-fluids under the influence of the magnetic field, an active linear actuator is designed and developed in this thesis. According to the functional requirement, the design concepts of bladder and diverse magnetic loop are derived. Through the theoretical model and computer assister analysis, the influence of the design and operating parameters on the field strength through the MR-fluids and studied and analyzed. Finally, through the experimental testings, the displacement, the actuation force, and the reaction speed of the MR-actuator are comprehensively inspected and measured. During the pre-actuation phase, the driving current is linearly dependent on the air gap of the magnetic loop. During the actuation phase, MR-actuator can provide a stable push force. The remnant super-strong viscosity situation of the MR-fluids can be relieved by removing the magnetic filed and using compressive spring, which can increase the recovery speed口試委員審定書 I謝 II文摘要 III文摘要 IV目錄 VII目錄 IX號表 X一章 緒論 1.1 研究動機與背景 1.2 文獻回顧 3.3 內容簡介 10二章 磁黏滯液體 11.1 磁黏滯液體之成分與性質 11.2磁黏滯液體的應用與研究 19三章 磁黏滯式線性致動器之設計開發 21.1 工作原理和概念設計 21.2 設計評估與實體設計 28四章 致動器之磁迴路 35.1 磁迴路理論分析模型建構 35.2 磁迴路模擬分析 41五章 磁黏滯式線性致動器之測試與特性分析 45.1 實驗架構 45.2 系統測試 46.2.1 驅動磁場量測實驗 46.2.2 負載能力量測實驗 48.2.3 反應速率量測實驗 52六章 結論與未來展望 57考文獻 59錄A 磁黏滯液體性能表 63錄B 光纖位移計規格與特性 67錄C 訊號擷取卡規格與特性 69錄D 霍爾元件3503型錄 7
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