• Title/Summary/Keyword: More Moore

Search Result 58, Processing Time 0.021 seconds

Si CMOS Extension and Ge Technology Perspectives Forecast Through Metal-oxide-semiconductor Junctionless Field-effect Transistor

  • Kim, Youngmin;Lee, Junsoo;Cho, Seongjae
    • JSTS:Journal of Semiconductor Technology and Science
    • /
    • v.16 no.6
    • /
    • pp.847-853
    • /
    • 2016
  • Applications of Si have been increasingly exploited and extended to More-Moore, More-than-Moore, and beyond-CMOS approaches. Ge is regarded as one of the supplements for Si owing to its higher carrier mobilities and peculiar band structure, facilitating both advanced and optical applications. As an emerging metal-oxide device, the junctionless field-effect transistor (JLFET) has drawn considerable attention because of its simple process, less performance fluctuation, and stronger immunity against short-channel effects due to the absence of anisotype junctions. In this study, we investigated lateral field scalability, which is equivalent to channel-length scaling, in Si and Ge JLFETs. Through this, we can determine the usability of Si CMOS and hypothesize its replacement by Ge. For simulations with high accuracy, we performed rigorous modeling for ${\mu}_n$ and ${\mu}_p$ of Ge, which has seldom been reported. Although Ge has much higher ${\mu}_n$ and ${\mu}_p$ than Si, its saturation velocity ($v_{sat}$) is a more determining factor for maximum $I_{on}$. Thus, there is still room for pushing More-Moore technology because Si and Ge have a slight difference in $v_{sat}$. We compared both p- and n-type JLFETs in terms of $I_{on}$, $I_{off}$, $I_{on}/I_{off}$, and swing with the same channel doping and channel length/thickness. $I_{on}/I_{off}$ is inherently low for Ge but is invariant with $V_{DS}$. It is estimated that More-Moore approach can be further driven if Si is mounted on a JLFET until Ge has a strong possibility to replace Si for both p- and n-type devices for ultra-low-power applications.

REAL POLYHEDRAL PRODUCTS, MOORE'S CONJECTURE, AND SIMPLICIAL ACTIONS ON REAL TORIC SPACES

  • Kim, Jin Hong
    • Bulletin of the Korean Mathematical Society
    • /
    • v.55 no.4
    • /
    • pp.1051-1063
    • /
    • 2018
  • The real moment-angle complex (or, more generally, real polyhedral product) and its real toric space have recently attracted much attention in toric topology. The aim of this paper is to give two interesting remarks regarding real polyhedral products and real toric spaces. That is, we first show that Moore's conjecture holds to be true for certain real polyhedral products. In general, real polyhedral products show some drastic difference between the rational and torsion homotopy groups. Our result shows that at least in terms of the homotopy exponent at a prime this is not the case for real polyhedral products associated to a simplicial complex whose minimal missing faces are all k-simplices with $k{\geq}2$. Moreover, we also show a structural theorem for a finite group G acting simplicially on the real toric space. In other words, we show that G always contains an element of order 2, and so the order of G should be even.

Reading Elizabeth Bishop in Her Relationship with Moore and Lowell: Looking into the "Intrinsic Qualities" of Bishop's Poetry (무어, 로월과의 관계 속에서 엘리자베스 비숍 읽기 -비숍 시의 "내적 특성" 들여다보기)

  • Kim, Yangsoon
    • Journal of English Language & Literature
    • /
    • v.55 no.1
    • /
    • pp.25-59
    • /
    • 2009
  • This study explores the characteristics of Elizabeth Bishop's poetry in comparison with the two of her closest friends and poets, Marianne Moore and Robert Lowell. Bishop's reputation has dramatically changed since her death. In the 1970s she was "a writer's writer's writer," and admired by a small group of poets or critics. Since 1990s, however, there has been a great shift in the evaluation of her poetry, which is so called "The Elizabeth Bishop Phenomenon." It does not seem to be an easy task to examine what has driven the phenomenon, and why she used to be a minor poet or "the most honored yet most elusive of poets" but now she has a widespread recognition by the academy and beyond it. The "intrinsic qualities" of Bishop's poetry, however, can be one of the main reasons why it took several decades for Bishop to become a central figure in the literary canon. Looking into her "intrinsic qualities," this paper discusses Bishop's "The Fish," "Roosters" through the Moore-Bishop relationship, and reads Bishop's "Armadillo" and "The Monument" through the Lowell-Bishop relationship. It also deals with letters, interviews, Moore's "The Fish," and Lowell's "Skunk Hour" and "For the Union Dead" to show the Bishop's deep and complex relationships with the two poets, and more importantly their differences. Bishop's poetry is difficult, "elusive," and sometimes "enigmatic," not because her texts are full of difficult words to understand but because there are the subtle interchange between perception and meaning, "the dynamics of keen feeling," the unresolved patterns, and the transient vision under the seemingly transparent surface of the texts.

A DFT Deblurring Algorithm of Blind Blur Image (무정보 blur 이미지 복구를 위한 DFT 변환)

  • Moon, Kyung-Il;Kim, Chul
    • Journal of The Korean Association of Information Education
    • /
    • v.15 no.3
    • /
    • pp.517-524
    • /
    • 2011
  • This paper presents a fast blind deconvolution method that produces a deblurring result from a single image in only a few seconds. The high speed of our method is enabled by considering the Discrete Fourier Transform (DFT), and its relation to filtering and convolution, and fast computation of Moore-Penrose inverse matrix. How can we predict the behavior of an arbitrary filter, or even more to the point design a filter to achieve certain specifications. The idea is to study the frequency response of the filter. This concept leads to an useful convolution formula. A Matlab implementation of our method usually takes less than one minute to deblur an image of moderate size, while the deblurring quality is comparable.

  • PDF

A Study of Warpage Analysis According to Influence Factors in FOWLP Structure (FOWLP 구조의 영향 인자에 따른 휨 현상 해석 연구)

  • Jung, Cheong-Ha;Seo, Won;Kim, Gu-Sung
    • Journal of the Semiconductor & Display Technology
    • /
    • v.17 no.4
    • /
    • pp.42-45
    • /
    • 2018
  • As The semiconductor decrease from 10 nanometer to 7 nanometer, It is suggested that "More than Moore" is needed to follow Moore's Law, which has been a guide for the semiconductor industry. Fan-Out Wafer Level Package(FOWLP) is considered as the key to "More than Moore" to lead the next generation in semiconductors, and the reasons are as follows. the fan-out WLP does not require a substrate, unlike conventional wire bonding and flip-chip bonding packages. As a result, the thickness of the package reduces, and the interconnection becomes shorter. It is easy to increase the number of I / Os and apply it to the multi-layered 3D package. However, FOWLP has many issues that need to be resolved in order for mass production to become feasible. One of the most critical problem is the warpage problem in a process. Due to the nature of the FOWLP structure, the RDL is wired to multiple layers. The warpage problem arises when a new RDL layer is created. It occurs because the solder ball reflow process is exposed to high temperatures for long periods of time, which may cause cracks inside the package. For this reason, we have studied warpage in the FOWLP structure using commercial simulation software through the implementation of the reflow process. Simulation was performed to reproduce the experiment of products of molding compound company. Young's modulus and poisson's ratio were found to be influenced by the order of influence of the factors affecting the distortion. We confirmed that the lower young's modulus and poisson's ratio, the lower warpage.

A Study of Traditional Pattern in Animation: focusing on Toom Moore's and (애니메이션에 사용된 전통문양 연구 - 톰 무어의 <바다의 노래>, <칼릴 지브란의 예언자-사랑에 대하여>를 중심으로)

  • Joe, Hyun-Jee
    • Cartoon and Animation Studies
    • /
    • s.43
    • /
    • pp.185-209
    • /
    • 2016
  • Pattern refers to singular or repetitive decorative form in a blank surface, Also pattern is not just something to simply fill in the blanks, and has more meanings. Pattern reflects the specific culture or regional feature. So Depending on which pattern to use, creator can give particular of identity. which is generally utilized in visual arts such as painting, architecture, craft, as well as animation. Pattern in animation plays a role of decorating background or surfaces of characters' outfits or props. And Parttern is effective way to describe the story of the times and space environment of the background. Tomm Moore, an animation director in in Ireland mainly produces animations based on traditional folk stories or myths. He usually utilizes cultural and artistic factors related to the themes in his work production. One example is the insertion of pattern closely associated with the narratives and backgrounds of animations to create profound scenes. Tomm Moore used the Irish Celt pattern in Secret of Kells (2009) and Song of Sea (2014) and Islam geometric pattern and plant pattern in a short nimation named On Love from Kahlil Gibran's The Prophe (2014). This study attempts to examine the historical and cultural foundation and the narratives of these two animations, Song of Sea(2014) and Kahlil Gibran's The Prophet: On Love (2014) in which Tomm Moore participated as the director and producer, exploring their relevant traditional patterns. Moreover, it also attempts to analyze how these traditional patterns are utilized in the animations.

Dynamic analysis of deployable structures using independent displacement modes based on Moore-Penrose generalized inverse matrix

  • Xiang, Ping;Wu, Minger;Zhou, Rui Q.
    • Structural Engineering and Mechanics
    • /
    • v.54 no.6
    • /
    • pp.1153-1174
    • /
    • 2015
  • Deployable structures have gained more and more applications in space and civil structures, while it takes a large amount of computational resources to analyze this kind of multibody systems using common analysis methods. This paper presents a new approach for dynamic analysis of multibody systems consisting of both rigid bars and arbitrarily shaped rigid bodies. The bars and rigid bodies are connected through their nodes by ideal pin joints, which are usually fundamental components of deployable structures. Utilizing the Moore-Penrose generalized inverse matrix, equations of motion and constraint equations of the bars and rigid bodies are formulated with nodal Cartesian coordinates as unknowns. Based on the constraint equations, the nodal displacements are expressed as linear combination of the independent modes of the rigid body displacements, i.e., the null space orthogonal basis of the constraint matrix. The proposed method has less unknowns and a simple formulation compared with common multibody dynamic methods. An analysis program for the proposed method is developed, and its validity and efficiency are investigated by analyses of several representative numerical examples, where good accuracy and efficiency are demonstrated through comparison with commercial software package ADAMS.

Research on Semiconductor Technology Roadmap by the Institute of Semiconductor Engineers (반도체공학회의 반도체 기술 발전 로드맵 연구 )

  • Hyunchol Shin;Ilku Nam;Jun-Mo Yang;Byung-Wook Min;Kyuho Lee;Chiweon Yoon;Jean Ho Song
    • Transactions on Semiconductor Engineering
    • /
    • v.2 no.3
    • /
    • pp.19-26
    • /
    • 2024
  • Semiconductors are considered as one of the essential technologies in modern electronic devices and systems. Thus, it is required to predict and propose the semiconductor technology development roadmap. This study describes the key semiconductor technology issues, research and development trends, and their future roadmap, in the four areas such as the semiconductor device More-Moore integration technology, system-specific application processor technology, artificial intelligence/machine learning (AI/ML) processor technology, and outside system connectivity via optical and wireless communication.

Tabu Search methods to minimize the number of tardy jobs in nonidentical parallel machine scheduling problem (동일하지 않는 병렬기계 시스템에서 지연작업수를 최소화하는 Tabu Search 방법)

  • 전태웅;강맹규
    • Korean Management Science Review
    • /
    • v.12 no.3
    • /
    • pp.177-185
    • /
    • 1995
  • This paper presents a Tabu Search method to minimize a number of tardy jobs in the nonidentical parallel machine scheduling. The Tabu Search method employs a restricted neighborhood for the reduction of computation time. In this paper, we use two different types of method for a single machine scheduling. One is Moore's algorithm and the other is insertion method. We discuss computational experiments on more than 1000 test problems.

  • PDF

SEMILOCAL CONVERGENCE OF NEWTON'S METHOD FOR SINGULAR SYSTEMS WITH CONSTANT RANK DERIVATIVES

  • Argyros, Ioannis K.;Hilout, Said
    • The Pure and Applied Mathematics
    • /
    • v.18 no.2
    • /
    • pp.97-111
    • /
    • 2011
  • We provide a semilocal convergence result for approximating a solution of a singular system with constant rank derivatives, using Newton's method in an Euclidean space setting. Our approach uses more precise estimates and a combination of two Lipschitz-type conditions leading to the following advantages over earlier works [13], [16], [17], [29]: tighter bounds on the distances involved, and a more precise information on the location of the solution. Numerical examples are also provided in this study.