... OF ADVANCED AlGaN/GaN HIGH-ELECTRON-MOBILITY TRANSISTORS LIU XINKE (B APPL SC (HONS.)), NATIONAL UNIVERSITY OF SINGAPORE A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF ... Ron of the fabricated AlGaN/GaN MOS- HEMTs, as compared with those of state -of- the-art AlGaN/GaN MOSHEMTs (b) Breakdown voltage VBR versus gate-to-drain spacing LGD of the fabricated AlGaN/GaN MOS- HEMTs, ... spacing LGD of m achieved a breakdown voltage VBR of 800 V and an on-state resistance Ron of mcm2 In addition, sub-threshold swing S of ~ 97 mV/decade and current on/off, Ion/Ioff, ratio of ~ 106...
Ngày tải lên: 10/09/2015, 09:11
... deposition MOS metal-oxide-semiconductor device, usually the MOS capacitor MOSFET metal-oxide-semiconductor field-effect transistor MUX multiplexer n -MOS n-type MOS device n-MOSFET n-type channel MOSFET ... length N0 total density of defects NH concentration of hydrogen Nit density of interface traps (cm−2 ) Not density of oxide traps Not,p density of oxide hole traps Qf density of fixed charge td delay ... become part of the standard MOS fabrication process However, during this period of initial research on NBTI, n -MOS VLSI process became dominant and replaced the p -MOS process When CMOS process...
Ngày tải lên: 14/09/2015, 14:04
Models of motherhood in the abortion debate - self-sacrifice versus self-defence
... women in the form of the right to an abortion as an instrument of care-giving not to the fetus, of course, but to others We can see a good example of the use of a traditional model of motherhood ... involves an irreversible injury of existential proportions – the ending of one’s life Clearly, in this most extreme of all types of injury, legal norms support the right of people to defend themselves ... rights, relies upon and reinforces some of the most traditional components of motherhood by invoking the principles of ‘lifeboat’ ethics The traditional model of motherhood depicts women in a nurturing...
Ngày tải lên: 01/11/2013, 08:20
Tài liệu Báo cáo khoa học: Animal models of amyloid-b-related pathologies in Alzheimer’s disease docx
... Animal models of Alzheimer’s disease O Philipson et al Transgenic animal models Models devoid of any disease-causing APP mutations Animal models expressing wild-type (wt) human APP are of interest ... disease pathogenesis Familial forms of AD, with an autosomal dominant mode of inheritance, account for < 2% of all AD cases Onset is most often before 65 years of age, and the penetrance is nearly ... [54] A substantial amount of CAA is often found in transgenic mice with the Swedish mutation, which is likely to be because of the high rate of synthesis and accumulation of Ab1-40 In Tg2576, more...
Ngày tải lên: 16/02/2014, 09:20
Tài liệu Macro-Finance Models of Interest Rates and the Economy pdf
... applications of the Rudebusch-Wu model illustrate the range of issues that such a macrofinance model can address The first of these is an exploration of the source of the Great Moderation—the period of reduced ... low levels of long-term interest rates remained mostly unaccounted for in such an analysis Of course, with the benefit of hindsight, it now appears that the bond yield conundrum was part of a broader ... yield curve Many of these models are arbitrage-free latent factor models Unfortunately, there are many technical difficulties involved with the estimation of AF latent factor models, which tend...
Ngày tải lên: 17/02/2014, 03:20
Tài liệu Báo cáo khoa học: "Parsing with generative models of predicate-argument structure" pptx
... if they delay the evaluation of the probabilities of the same words and if they have the same number of lexical heads, and if the first two elements of their lists of lexical heads are identical ... impact of capturing different kinds of long-range dependencies, four different models were investigated: The baseline model is like the LexCat model of (2002b), since the structural probabilities of ... Table gives the performance of all four models on section 23 in terms of the accuracy of lexical categories, Parseval scores, and in terms of the recovery of word-word dependencies in the predicateargument...
Ngày tải lên: 20/02/2014, 16:20
Tài liệu Master Thesis Health Sciences: Expert Elicitation to Populate Early Health Economic Models of Medical Diagnostic Devices in Development pdf
... is often associated with enhanced blood vessel supply An important application of this technology includes breast cancer visualization The proof of principle of PA imaging in the detection of ... negative rate (TNR) based on existing MRI data (with a TPR of 263 out of 292, and a TNR of 214 out of 308) and specified the mode (the most likely value), the lower, and the upper boundaries (a ... approaches are often applied to evaluate the cost-effectiveness of healthcare technologies at different phases of their product lifecycle This can be used to inform the reimbursement of funding of healthcare...
Ngày tải lên: 20/02/2014, 16:20
Tài liệu Báo cáo Y học: Short peptides are not reliable models of thermodynamic and kinetic properties of the N-terminal metal binding site in serum albumin doc
... consequence of the presence of the same kind of spectrum for 4N complexes of GGH, where the a carbon of the His residue is the sole source of chirality [10] However, while positions of the component ... studies of the Ni(II) complex of HSA [6] Due to different protonation patterns, the stability constants of particular complexes of model peptides cannot be compared directly There are two ways of ... in the middle of the range of values for both Cu(II) and Ni(II) Note that the variation of side chain substituents can result in changes of complex stabilities by up to six orders of magnitude,...
Ngày tải lên: 22/02/2014, 04:20
Tài liệu Concepts, Techniques, and Models of Computer Programming pot
... reason is the existence of the Mozart Programming System Panorama of computation models This book presents a broad overview of many of the most useful computation models The models are designed not ... (including improved versions of Java) The kernel language approach Practical programming languages scale up to programs of millions of lines of code They provide a rich set of abstractions and syntax ... consisting of hardware, operating system, middleware, and application layers, each of which is based on the work of thousands of people over several decades They contain an enormous number of abstractions,...
Ngày tải lên: 22/02/2014, 06:20
Báo cáo khoa học: "Latent variable models of selectional preference" potx
... internals of generative syntax models such as the “infinite tree” (Finkel et al., 2007) In some ways, our models are less ambitious than comparable syntactic models as they focus on specific fragments of ... 0.1 0.1 50 100 150 No of classes (a) Verb-object 200 0.1 50 100 150 200 No of classes 50 100 150 200 No of classes (b) Noun-noun (c) Adjective-noun Figure 1: Effect of number of argument classes ... the topical structure of documents can be adapted to learn probabilistic models of selectional preference These models are especially effective for estimating plausibility of low-frequency items,...
Ngày tải lên: 07/03/2014, 22:20
Báo cáo khoa học: "Compositional Matrix-Space Models of Language" potx
... a vector v of numerical values; one might, e.g., think of the level of excitation of neurons Then, an external stimulus or signal, such as a perceived word, will result in a change of the mental ... underlying word space models; e.g., the models of Widdows (2008) and Giesbrecht (2009) feature dimensionality reduction while that of Mitchell and Lapata (2008) does not In the light of these findings, ... combine a variety of distributional and symbolic aspects of natural language This nourishes the hope that matrix models can serve as a kind of lingua franca for compositional models This having...
Ngày tải lên: 07/03/2014, 22:20
Báo cáo khoa học: "A Word-Order Database for Testing Computational Models of Language Acquisition" docx
... efficiency of parameter-setting acquisition models We have recently run experiments of seven parameter-setting (P&P) models of acquisition on the domain What follows is a brief discussion of the ... a comprehensive study of parameter-setting algorithms or acquisition algorithms in general There is a large number of models that are omitted; some of which are targets of current investigation ... LDD without its derivation 3.1 A Measure of Feasibility As a simple example of a learning strategy and of our simulation approach, consider a domain of binary parameters and a memoryless learner...
Ngày tải lên: 08/03/2014, 04:22
Báo cáo khoa học: "HIDDEN UNDERSTANDING MODELS OF NATURAL LANGUAGE" ppt
... and (2) the sets of terminal and nonterminal nodes must remain disjoint Both of these requirements can be satisfied by trees possessing most of the structural characteristics of conventional syntactic ... terms of a tree structured representation, the set of nonterminal nodes is fully specified, while some of the terminal nodes may be omitted One central characteristic of hidden understanding models ... Markov models, we refer to the combination of these two models as a hidden understanding model The word "hidden" refers to the fact that only words can be observed The internal states of each of...
Ngày tải lên: 08/03/2014, 07:20
Dependent Defaults in Models of Portfolio Credit Risk potx
... features of credit risk models; from a practical point of view a link between the different types of models enables us to apply numerical and statistical techniques for solving and calibrating the models, ... maximum likelihood fitting of Bernoulli mixture models is a feasible method of obtaining estimates of model parameters and the precise choice of the mixing distribution is of lesser importance Moreover, ... credit risk models leading to the same multivariate distribution of S or Y Since this distribution is the main object of interest in the analysis of portfolio credit risk, we call two models with...
Ngày tải lên: 15/03/2014, 04:20
Báo cáo khoa học: Recent insights into cerebral cavernous malformations: animal models of CCM and the human phenotype pptx
... not considered in the category of animal models of disease, one can view the field of human genetics as probing a vast natural mutagenesis screen involving billions of individual organisms As in ... developing animal models of CCM disease Classically, a CCM consists of a cluster of dilated blood vessels [12,13] Each vessel in the cluster is grossly dilated, earning the name of a cavern; each ... orthologue of CCM2) Zebrafish with loss -of- function mutations in san or vtn share a common phenotype with fish lacking heart of glass (heg) Although mutations in the human orthologue of heart of glass...
Ngày tải lên: 15/03/2014, 10:20
avaluation of chemical bioaccumulation models of aquatic ecosystems
Ngày tải lên: 16/03/2014, 11:45
Towards Computational Models of Visual Aesthetic Appeal of Consumer Videos docx
... the rule of thirds, we utilize the region of interest (ROI) extracted as described above Similarly to [8], our measure of the rule of thirds (f9 ) is the minimum distance of the centroid of the ... neither of these data sets was made public To the best of our knowledge, the only dataset in the area of video aesthetics is that used by Luo and Tang [8] It consists of 4000 high quality (professional) ... part of each of the videos in order to reduce potential biases induced by varying video lengths [15] Each of the 1600 videos was viewed by two of the authors who rated the aesthetic appeal of the...
Ngày tải lên: 16/03/2014, 18:20
Báo cáo khoa học: "Combining data and mathematical models of language change" ppt
... Table lists which of Models 1–5 show each of the desired properties (from §3.2), corresponding to aspects of the observed diachronic dynamics of N/V pair stress Based on this set of models, we are ... analyzing a range of simple, related models This approach is pursued in more depth in the larger set of models considered in (Sonderegger, 2009) Our use of model comparison contrasts with most recent ... 1775–present 2.2 Sources of change The most salient facts about English N/V pair stress are that (a) change is most often to {1,2} (b) the {2,1} pattern never occurs We summarize two types of explanation...
Ngày tải lên: 17/03/2014, 00:20
Báo cáo khoa học: "Unlexicalised Hidden Variable Models of Split Dependency Grammars∗" pdf
... derivation of a sequence of left dependents of u, we redefine the right-hand side of Lp \L1 u v as 1l , L1 Lq \L1 and include the production 1l , L1 → v w u w v w 1l L1 in the set of rules v w ... performance of our models, we report two of the standard measures: the per word and per sentence accuracy (McDonald, 2006) Figures reported in the upper section of Table measure the effect on accuracy of ... sequences in W ∗ of left dependents of v; • R is a function that, for each v ∈ V , returns a finite automaton that recognises the well-formed sequences of right dependents in W ∗ for v 214 of rules such...
Ngày tải lên: 17/03/2014, 02:20