1,720,961 research outputs found
Steep-Slope Transistor with an Imprinted Antiferroelectric Film
No full textThe effect of negative capacitance (NC), which can internally boost the voltage applied to a transistor, has been considered to overcome the fundamental Boltzmann limit of a transistor. To stabilize the NC effect, the dielectric (DE) must be integrated into a heterostructure with a ferroelectric (FE) film. However, in a multidomain hafnia, the charge boosting effect is reduced owing to a lowering of the depolarization field originating from the stray field at each domain, and simultaneously, the operating voltage increases owing to the voltage division at the DE. Here, we demonstrate core approaches to the gate stack of energy-efficient device technology using a transient NC. Electrical measurements of the transistor with imprinted antiferroelectric and high CDE/CFE structures exhibit low subthreshold slopes below 20 mV/dec, a low voltage operation of 0.5 V, a fast operation of 20 ns, hysteresis-free Id-Vg, and high endurance characteristics of 1012 cycles. We expect that this will lead to the rapid implementation of the NC effect in high-speed switching device applications with significantly improved energy efficiency.
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
(A) study on hafnia-based ferroelectric tunnel junction device by inserting functional interlayer
No full text학위논문(석사) - 한국과학기술원 : 전기및전자공학부, 2023.2,[vi, 40 p. :]기술이 발전함에 따라서, 차세대 메모리 소자에 관한 연구가 활발히 이뤄지고 있다. 특히, 강유전성을 갖는 하프늄 옥사이드 박막은 CMOS 공정 적합성이 뛰어나며, 소자 스케일링 측면에서 유리하기 때문에, 강유전체 터널 정션 (FTJ) 및 강유전체 전계 트랜지스터 (FeFET) 와 같은 소자들이 연구되고 있다. 그러나, 강유전체에는 P-V 이력 곡선을 한쪽으로 편향시키는 임프린트 현상이 존재하며, 이는 메모리 디바이스의 동작전압 증가 및 오동작을 초래하므로 단점으로 간주되어 왔다. 본 연구에서는 이러한 한계를 극복하기 위해 기능성 중간층인 탄탈륨 옥사이드 기반의 고정 전하층을 하프늄-지르코늄 박막에 삽입하여 임프린트 현상을 조절하는 방법을 제안한다. 또한, 이를 응용하여 강유전체 터널 정션 소자의 온/오프 전류비와 자가 정류 강유전체 터널 정션 소자를 위한 정류비를 개선시킴을 통해, 강유전체 터널 정션 소자에서의 기능성 중간층의 효과를 검증하였다.한국과학기술원 :전기및전자공학부
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
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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