High-order terahertz sideband generation (HSG), recently discovered experimentally in semiconductors, is an extreme nonlinear optical phenomenon with physics similar to high-order harmonic generation (HHG) but in a much lower frequency regime. A key concept in understanding the HSG and HHG is the quantum trajectories, where the quantum evolution of particles under strong fields can be essentially captured by a small number of quantum trajectories that satisfy the stationary phase condition of the Dirac-Feynmann path integral. However, in contrast to HHG in atoms and molecules, HSG in semiconductors can have interesting effects due to nontrivial “vacuum” states of band materials. A rich structure of the Bloch states in condensed matter systems would lead to a variety of phase effects in extreme nonlinear optics. / In this thesis, we show that in semiconductors with nontrivial gauge structures in the energy bands, the curved quantum trajectory of an electron-hole pair under a strong elliptically polarized terahertz field can accumulate a geometric phase. In particular, the geometric phase becomes the famous gauge invariant Berry phase for a cyclic trajectory. Taking monolayer MoS₂ as a model system, we show that the Berry phase appears as the Faraday rotation angle in the pulse emission from the material under short-pulse excitation. This finding reveals the Berry phase effect in the extreme nonlinear optics regime for the first time. / We further apply the Berry phase dependent quantum trajectory theory to biased bilayer graphene under strong elliptically polarized terahertz fields. The biased bilayer graphene with Bernal stacking has similar Bloch band features and optical properties to the monolayer MoS₂, such as the time-reversal related valleys and valley contrasting optical selection rule. However, the biased bilayer graphene has much larger Berry curvature than that in monolayer MoS₂, which leads to a large Berry phase of the quantum trajectory and in turn a giant Faraday rotation of the optical emission (∼ 1 rad for a THz field with frequency 1 THz and strength 8 kV/cm). This surprisingly big angle shows that the Faraday rotation can be induced more efficiently by the Berry curvature in momentum space than by the magnetic field in real space. It provides opportunities to use bilayer graphene and THz lasers for ultrafast electro-optical devices. / Finally, we study the geometric phase of a quantum wavepacket driven adiabatically along a trajectory in a parameterized state space. Inherent to quantum evolutions, the wavepacket can not only accumulate a quantum phase but may also experience dephasing, or quantum diffusion. We show that the diffusion of quantum trajectories can also be of geometric nature as characterized by the imaginary part of the geometric phase. Such an imaginary geometric phase results from the interference of geometric phase dependent fluctuations around the quantum trajectory. As a specific example, we again study the quantum trajectories of HSG in monolayer MoS₂. We find that while the real part of the geometric phase leads to the Faraday rotation of the linearly polarized light that excites the electron-hole pair, the imaginary part manifests itself as the polarization ellipticity of the terahertz sidebands which can be measured experimentally. The discovery of the geometric quantum diffusion extends the concept of geometric phases. / 最近，在實驗上發現了半導體中的一個極端非線性光學現象，即高次太赫茲邊帶產生(HSG)。它是原子与分子系统里的高次谐波产生(HHG)在太赫茲頻域的一個推广。HSG与HHG的關鍵物理過程均可用量子轨道理论解释，其中粒子的路徑積分描述的量子演化由若干滿足穩相近似條件的量子軌道主導。但是HHG与HSG之間存在着本質區別，即半導體的“真空態”可以具備一些非平凡的拓撲結構，從而給極端非線性光學领域帶來許多有趣的物理效應。 / 在這篇論文中，我們發現在強橢圓偏振太赫茲場作用下的具有非平凡规范結構的半導體中，電子空穴對的量子軌道可以積累一個非零的幾何相。特別地，如果我們考慮週期量子軌道，這個幾何相便成為著名的規範不變的Berry相。我們取單層MoS₂為模型系統，發現在光脉衝激勵下的材料中的光信號經歷一個法拉第旋轉，而且轉角由量子軌道的Berry相給出。這個發現首次揭示了極端非線性光學領域內的Berry相效應。 / 我們進一步將含Berry相效應的量子軌道理論應用于強橢圓偏振太赫茲場作用下的雙層石墨烯中。Bernal堆疊的雙層石墨烯与單層MoS₂具有某些相似的能帶結構与光學性質，例如兩者都具有兩個時間反演對稱的谷，且兩個谷內具有不同的躍遷選擇定則。但是雙層石墨烯有遠遠大於單層MoS₂的Berry曲率，從而其內的量子軌道也會積累一個遠遠大於單層MoS₂的Berry相。這個Berry相可以導致光信號巨大的法拉第旋轉（在頻率1THz以及場強8kV/cm的太赫茲場下約為1rad）。這個傳統方法下所無法產生的巨大法拉第旋轉說明比起實空間內的磁場，動量空間內的Berry曲率可以更加有效地誘發光信號的法拉第旋轉。我們的結果可以促使雙層石墨烯以及太赫茲激光在超快光電設備中的應用。 / 最後，我們考慮具有非平凡規範結構的參數空間內的量子波包在絕熱驅動下的量子演化。在演化過程中，這個波包不僅可以獲得一個量子相位，而且會經歷退相干（即量子擴散）。我們發現波包的一部分量子擴散具有幾何性質，而且這部分量子擴散可以表示為一個复幾何相的虛部。這個复幾何相可以通過量子軌道附近的帶有幾何相的量子路徑的相干來解釋。作為例子，我們研究了強橢圓偏振太赫茲場作用下的單層MoS₂中的量子軌道的复幾何相。我們發現此幾何相的實部誘發光的法拉第旋轉，而虛部則表現為邊帶光信號的橢圓偏振度，並且進而可以從實驗上進行測量。我們關於虛幾何相的研究拓展了幾何相這一概念的新領域。 / Yang, Fan = 強太赫茲場下半導體中的量子軌道的Berry相 / 楊帆. / Thesis Ph.D. Chinese University of Hong Kong 2014. / Includes bibliographical references (leaves 71-75). / Abstracts also in Chinese. / Title from PDF title page (viewed on 13, September, 2016). / Yang, Fan = Qiang tai he zi chang xia ban dao ti zhong de liang zi gui dao de Berry xiang / Yang Fan. / Detailed summary in vernacular field only. / Detailed summary in vernacular field only. / Detailed summary in vernacular field only. / Detailed summary in vernacular field only.

As the sizes of modern circuit designs become bigger and bigger, implementing those large circuits into FPGA become arduous. The state-of-the-art academic FPGA place-and-route tool, VPR, has good quality but needs around a whole day to complete a placement when the input circuit netlist contains millions of lookup tables, excluding the runtime needed for routing. / To speed up the placement process, we propose a routability-driven placement algorithm for FPGAs, which adopts techniques used in ASIC global placer. Our placer follows the lower-bound-and-upper-bound iterative optimization process in ASIC placers like Ripple. The total half perimeter wirelength (HPWL) of the circuit is used as the objective cost function and it modeled using the Bound2Bound net model. In lower bound computation, a placement solution with the minimum HPWL is determined by the conjugate gradient method. In upper bound computation, an almost-legalized result is produced by spreading cells linearly in the whole placement area. Those positions are then served as fixed-point anchors and fed into the next lower bound computation. Furthermore, global routing will be performed in the upper bound computation to estimate the routing segments usage, as a mean to consider congestion in the placement. The two bounds computations are computed alternatively until their results converge. / We tested our approach using 20 MCNC benchmarks and 16 large benchmarks for performance and scalability. Experimental results show that based on the island-style architecture which VPR is most optimized, our approach can obtain a placement result 8× faster than VPR with 2% more in channel width, or 3× faster with 1% more in channel width when considering congestion either. Our approach is even 20× faster in placing large benchmarks having over 50,000 lookup tables, however, with 10% more in channel width. Based on the Xilinx Virtex-5 architecture from a recent related work, we can out-perform VPR by reducing the channel width by 3% with almost 3× speedup in runtime. / 現今的電路設計得愈來愈大，要把這些巨大的電路實現在現場可程式邏輯門陣列(FPGA)上變得愈來愈困難，由其在布局及布線程序上變得十分耗時。儘管在一般的情況下，現時在學術領域中，最先進的用在FPGA上的布局及布線工具能夠提供高質素的布局結果，但當所需要布局的電路所包含的邏輯元件數達到數百萬個以上時，該工具也要耗費一整天的時間才能完成整個布局程序，其中並未計算之後布線程序所額外需要的時間。 / 有見及此，我們參考了一些應用在特殊應用積體電路(ASIC)設計軟體上的布局方法，並提出了一個專為FPGA而設的偏向優化Routability的布局算法來縮短布局程序所需要的時間。我們的算法以Bound2Bound模型來模擬電路內邏輯元件間的接線，並估算其Half-Perimeter線長(HPWL)來作為我們的目標函數進行優化。我們採用了一些ASIC布局軟體，如Ripple內的上限及下限交互計算的迭代優化程序。在下限的運算過程中，我們在無視節點重疊的情況下，使用了共軛梯度法來找出HPWL的最少值。在上限的運算過程中，我們把在下限計算找到的結果平均散佈在整個可布局的區域內，從而減少節點重疊的情況來得出一接近有效的布局結果。接著，這些節點的位置會被用作定點錨，附加在下一次的下限計算中，並引導它得出一節點重疊相對較少的布局結果。此外，我們可以選擇在上限的運算過程中加入Global Routing程序來估計該布局結果所需的線段數，從而在布局過程中考慮布線過份擁塞的情況。上限及下限的計算會不斷交互進行，直至雙方所得的結果聚合為止。 / 我們使用了20個MCNC基準電路及16個大型基準電路，來測試我們的布局算法的性能和可擴展性。實驗結果指出，針對島狀結構的FPGA，我們的算法能夠比VPR快8倍得出布局結果，但其通道寬度(Channel Width)卻增加了2%。如果在考慮布線擁塞度的情況下，我們的算法能夠比VPR快3倍，但其通道寬度卻增加了1%。再者，對於一些擁有超過50000個邏輯元件的大型基準電路，相比於VPR，雖然我們的算法能夠提供20倍的速度增長，但其布局結果的通道寬度卻增加了10%。如果我們使用在最近的相關研究中使用的Xilinx Virtex-5結構的話，我們的算法能夠比VPR快接近3倍得出布局結果，並且減少約3%的通道寬度。 / Lam, Ka Chun. / Thesis M.Phil. Chinese University of Hong Kong 2014. / Includes bibliographical references (leaves 64-70). / Abstracts also in Chinese. / Title from PDF title page (viewed on 12, October, 2016). / Detailed summary in vernacular field only. / Detailed summary in vernacular field only. / Detailed summary in vernacular field only.

Se propone que, en un contexto como el peruano, las emociones generadas por los candidatos sirven como información que guía la toma de decisión electoral. Empíricamente, la hipótesis básica anticiparía que los electores votarán mayoritariamente contra aquellos candidatos que generen respuestas afectivas negativas y votarán mayoritariamente a favor de aquellos candidatos que generen respuestas afectivas positivas. Más aún, el voto no solo sería espontaneo y emocional, sino que este proceso inconsciente luego sería justificado a través de argumentos racionales. Por ello, se esperaría encontrar congruencias entre las evaluaciones políticas de los votantes y la respuesta emocional: las emociones sesgan las evaluaciones políticas del elector, potenciando/atenuando el efecto de las mismas. Así, por ejemplo, algunas personas no votarían por un candidato por el que sienten emociones negativas a pesar de que dicho candidato sea la opción racional. / Tesis

Ariano Suassuna, poeta, dramaturgo, romancista, artista plástico e professor, que quando ainda muito jovem foi considerado um dos maiores dramaturgos brasileiros, tomou para si a missão de defender a cultura nacional. Nesse papel, muitas vezes foi criticado e incompreendido por sustentar suas convicções. Uma das coisas que ele mais criticava era a cultura de massa. Ele afirmava que arte para ele não era um negócio, era missão, vocação e festa. O que fez com que ele tenha demorado tanto a permitir a aproximação de suas obras com as indústrias cultural e criativa – principalmente com a televisão –, que entendia que não teriam condições de manter os princípios que ele trazia em sua poética. E dos quais ele não abria mão. Deste modo, este estudo, constituído a partir das categorias memória e cultura, busca compreender como as narrativas de memórias de um grupo relacionado a Ariano Suassuna testemunharam sua vida e obra e serviram de base para a produção de documentos e relatos sobre cultura e indústria cultural. E entender, por meio dessas narrativas, como se deu a relação de Ariano Suassuna e de sua obra com a cultura e as indústrias cultural e criativa. Para tanto, esta pesquisa, enquadrada como qualitativa descritiva, fez uso da metodologia de história oral e da hermenêutica de profundidade, que junto com a teoria de base deram sustentação à mesma. Ao final, concluiu-se que Ariano não cedeu às investidas dos meios das indústrias cultural e criativa. E que, ao contrário, para adaptarem suas obras foram aqueles meios que se renderam a ele. / Ariano Suassuna, poet, playwright, novelist, plastic artist and teacher, that when still very young was considered one of the greatest Brazilian dramatists, took on the mission of defending the national culture. In this role, he was often criticized and misunderstood for holding his convictions. One of the things he most criticized was mass culture. He claimed that art for him was not a business, it was mission, vocation, and party. What made him take so long to allow the rapprochement of his works with the cultural and creative industries - especially with television - that he understood would not be able to maintain the principles that he brought in his poetics. And of which he would not give up. Thus, this study, based on the categories memory and culture, seeks to understand how the narratives of memories of a group related to Ariano Suassuna witnessed his life and work and served as the basis for the production of documents and reports on culture and cultural industry. And to understand, through these narratives, how the relationship of Ariano Suassuna and his work with culture and the cultural and creative industries occurred. For this, this research, classified as descriptive qualitative, made use of the methodology of oral history and the hermeneutics of depth, which together with the basic theory, gave support to it. In the end, it was concluded that Ariano did not yield to the onslaughts of the cultural and creative industries. And that, on the contrary, to adapt his works, were those means that surrendered to him.

李天鈞. / "2004年8月". / 論文(哲學碩士)--香港中文大學, 2004. / 參考文獻 (leaves 83-89). / 附中英文摘要. / "2004 nian 8 yue". / Li Tianjun. / Lun wen (zhe xue shuo shi)--Xianggang Zhong wen da xue, 2004. / Can kao wen xian (leaves 83-89). / Fu Zhong Ying wen zhai yao. / 緒論 --- p.01 / Chapter 第一章 --- 潘寧博的神學人觀的建構背景與發展 --- p.05 / Chapter 1. --- 潘寧博對神學工作的理解 --- p.06 / Chapter 2. --- 潘寧博神學工作的目標並其實踐中所面對的處境及回應 --- p.13 / Chapter 3. --- 潘寧博的神學走向人類學的原因 --- p.21 / Chapter 4. --- 潘寧博神學人觀的建構過程 --- p.29 / Chapter 第二章 --- 潘寧博的神學人觀的内容 --- p.36 / Chapter 1. --- 潘寧博在《系統神學》卷二對神學人觀的理解 --- p.38 / Chapter 2. --- 人類的命運與上帝的形象 --- p.42 / Chapter 3. --- 人類的罪惡與普遍性的罪惡 --- p.48 / Chapter 4. --- 聖靈在人類中的工作 --- p.54 / Chapter 5. --- 耶穌基督與人類的關係 --- p.59 / Chapter 6. --- 對潘寧博的神學人觀的評論 --- p.63 / Chapter 第三章 --- 潘寧博的神學人觀對儒耶對話的意義 --- p.68 / Chapter 1. --- 對話的模式的選擇 --- p.68 / Chapter 2. --- 潘寧博神學人觀在儒耶對話中人觀討論方面的意義 --- p.71 / 總結 --- p.81 / 參考書目 --- p.83-89

Orientadora: Marina Gusmão de Mendonça / Banca: Francisco Luiz Corsi / Banca: Cláudia Alessandra Tessari / Resumo: Este trabalho investiga as causas do processo de desindustrialização no Brasil e discute os impactos de tal processo para a indústria nacional. Inicialmente, caracteriza-se o processo de industrialização do Brasil e se comparam a desindustrialização ocorrida em países desenvolvidos, tida como normal, e a desindustrialização precoce, verificada em países subdesenvolvidos. Entende-se que a desindustrialização brasileira teve início na década de 1980 e se fortaleceu no decênio seguinte, a partir da mudança do papel do Estado na economia brasileira, verificado pela abertura comercial e financeira, e, principalmente, após o Plano Real. Além disso, considera-se determinante o aumento do grau de dependência tecnológica e, consequentemente, a lacuna de desenvolvimento industrial entre o Brasil e as nações desenvolvidas para a ocorrência da desindustrialização no país. Para compreensão do processo, buscou-se caracterizar a industrialização brasileira e identificar as origens da desindustrialização para, enfim, analisar a especificidade do caso brasileiro: o paradoxo de crescimento econômico com desindustrialização. Conclui-se que a indústria brasileira se tornou obsoleta após décadas de impasses, tendo o paradoxo do caso brasileiro progredido em um contexto de políticas de estímulo à indústria nacional que, no entanto, foram combinadas com políticas macroeconômicas prejudiciais ao setor. / Abstract: This research investigates the causes of deindustrialization in Brazil and its impacts in national industry. Initially, we approach the Brazilian industrialization and compare the deindustrialization in developed countries (considered as normal) and the premature deindustrialization that took place in underdeveloped countries. Such process began in the 1980s and was intensified in the following decade by the change in the role of Brazilian State in the economy, the commercial and financial opening and especially after Plano Real. In addition, the increasing technological dependence is considered critical and, therefore, the gap between Brazil and developed countries. This dissertation also identifies the particularity of the Brazilian case: the economic growth with deindustrialization paradox. The evidence suggests that Brazilian industry became obsolete after decades of difficulties in a context of policies to stimulate national industry that, however, were combined with macroeconomic policies connected to the hindrances in the industrial sector. / Mestre

This thesis reports a study which explores the application of scaffolds in genre-informed approach to Second Language (L2) writing performance. Drawing on the genre-based pedagogy (Rose, 2010) and sociocultural perspective, it is argued that Hong Kong students with low English proficiency (LEP) would benefit on the writing performance from the application of genre-based scaffolds. Several principles from the research literature have been tried out in this study: designing high-support, genre- and move-specific scaffolding tasks through genre analysis, message amplification instead of message simplification, use of multiple resources including visuals, graphic organizers and L1 resources (Gibbons, 2009). / Specifically the study focuses on the evaluation of the application of scaffolds in genre-informed approach to second language (L2) writing performance as well as the design of scaffolds in genre-informed approach in the school-based teaching materials. / A case study approach was adopted in this study. An instructional programme with teaching materials designed with scaffolds in genre-informed approach was conducted in a Hong Kong secondary school which admits mostly low achieving students with low English proficiency. References were drawn from documents such as official English curriculum and assessment guidelines as well as from local English textbooks. The application of scaffolds in genre-informed approach to L2 writing was examined through students’ writing performance, students and teachers’ perceptions and change in affective outcomes towards the instructional programme as well as the design of scaffolds in the teaching materials. Data collection methods included both quantitative and qualitative data. The quantitative data included different writing performance measures as well as responses to questionnaires, while the qualitative data were collected from semi-structured interviews with students and their English teachers. / The findings show that the application of scaffolds in genre-informed approach is positive, and students have some improvement on their writing performance. The findings also show that a high-support instructional programme and writing curriculum can help students with low English proficiency, and limited support and exposure to English to build confidence, skills, and genre-specific knowledge to cope with writing tasks in the English writing examinations by improving their writing performance. The implications of the study will be discussed with a view to developing localized genre-informed approach to students and teachers facing similar challenges in Chinese school contexts in Hong Kong. / 本教育課程教育博士論文旨在探討推行第二語言（L2）語體寫作教學法與運用鷹架作用之關係。借鑒於語體教學法 (Rose, 2010) 及相關之社會文化觀點，本研究個案認為在推行第二語言語體寫作教學法時若能同時運用鷹架作用 (Bruner, 1984)，能讓香港的低英語水平學生有效改善寫作表現。此外，本研究個案實踐並驗證了數項鷹架作用帶來的果效，透過分析語體，擴展學生的學習訊息以免造成過於疏漏，應用多樣化資源如視覺效果、圖像式思考輔助工具及第一語言資源等，來設計高度支援、具語體特性及文步的支架 (Gibbons, 2009)。 / 本論文之研究個案特別著重檢視語體寫作教學法與應用鷹架作用之關係，評估此教學法與鷹架作用能否有效提高低英語水平學生的第二語言寫作表現，以及其相關之課程教學材料的設計。 / 本論文研究採用個案研究方法。研究者設計了一個以語體寫作教學法與應用鷹架作用的教學方案，並於其中香港一所中學試行，對象均為低英語水平的學生。除以語體寫作教學法與應用鷹架作用為學術理論基礎外，試行的教學方案亦參考了相關的香港教育政策文件及教材。研究個案中為了檢討及驗證語體寫作教學法與鷹架作用的果效，利用了多項資料如學生的寫作成績及表現、學生和教師對教學計劃的觀感和課後轉變，以及在設計教材支架等作參考。數據收集方法包括質性數據和定量數據收集方法。定量數據包括採取不同的寫作表現評鑑指標，以及問卷回應，而定性數據則來自與學生和其英語老師的半結構式訪談內容。 / 研究調查結果顯示，應用於語體寫作教學法的鷹架支援具正面影響，而學生的寫作表現從而能得以改善。調查結果亦顯示，高支援的教學計劃和寫作課程能幫助一些英語水平低、欠缺英語學習支援與接觸英語機會少的學生。透過增強學生的信心、寫作技巧以及與語體相關知識，期盼學生能夠應付香港中學文憑考試的英語寫作考試卷。最後，為提升低英語水平學生的第二語言寫作表現，以及讓面對相類情況與困難的私立學校與教師另闢蹊徑，本教育課程教育博士論文討論並提倡應用發展一些具本土文化的語體寫作教學法與其鷹架作用。 / Cheung, Chui Ling. / Thesis Ed.D. Chinese University of Hong Kong 2014. / Includes bibliographical references (leaves 374-409). / Abstracts also in Chinese; some appendixes includes Chinese. / Title from PDF title page (viewed on 17, October, 2016). / Cheung, Chui Ling. / Detailed summary in vernacular field only. / Detailed summary in vernacular field only. / Detailed summary in vernacular field only. / Detailed summary in vernacular field only.

In this thesis, the critical phenomenon in Berry curvature of nonlinear systems that occurs at phase boundaries is described by using the Bogoliubov excitation of the semiquantal dynamics. Its is shown that when the critical boundary in the parameter space is crossed, the nonlinear geometric phase of the Bogloubov excitations surrounding the elliptic fixed points experiences non-analytic behavior. / 在本論文，我們利用半古典動力學的博戈留波夫激發研究非線性系統的貝里曲率在相邊界上出現的臨界現象。結果顯示，當參數空間中的臨界曲面被越過，環繞橢圓不動點的博戈留波夫激發的非線性幾何相位發生非解析行為。 / Kam, Chon Fai = 非線性系統的貝里曲率 / 甘駿暉. / Thesis M.Phil. Chinese University of Hong Kong 2014. / Includes bibliographical references (leaves 49-56). / Abstracts also in Chinese. / Title from PDF title page (viewed on 18, October, 2016). / Kam, Chon Fai = Fei xian xing xi tong de Beili qu lu / Gan Junhui. / Detailed summary in vernacular field only.

Advances in semiconductor technology and design automation methods have introduced a new era for electronic products. With design sizes in millions of logic gates and operating frequencies in GHz, defects-per-million rates continue to increase, and defects are manifesting themselves in subtle ways. / Diagnosing functional failures in complicated electronic boards is a challenging task, wherein debug technicians try to identify defective components by analyzing some syndromes obtained from the application of diagnostic tests. The diagnosis effectiveness and efficiency rely heavily on the quality of the in-house developed diagnostic tests and the debug technicians’ knowledge and experience, which, however, have no guarantees nowadays. To tackle this problem, this thesis proposes a novel agent-assisted diagnostic framework for board-level functional failures, namely AgentDiag, which facilitates to evaluate the quality of the diagnostic tests and bridge the knowledge gap between the diagnostic programmers who write diagnostic tests and the debug technicians who conduct in-field diagnosis with a lightweight model of the boards and tests. / Machine learning algorithms have been advocated for automated diagnosis of board-level functional failures due to the extreme complexity of the problem. Such reasoning-based solutions, however, remain ineffective at the early stage of the product cycle, simply because there are insufficient historical data for training the diagnostic system that has a large number of test syndromes. Guided by a proposed metric isolation capability, AgentDiag is able to leverage the knowledge from the lightweight model to selecting a reduced test syndrome set for diagnosis in an adaptive manner. / While AgentDiag is effective to improve the diagnostic accuracy, this technique, by excluding some test syndromes, may cause information loss for diagnosis. The thesis further presents a novel test syndrome merging methodology to address this problem. That is, by leveraging the domain knowledge of the diagnostic tests and the board structural information, we adaptively reduce the feature size of the diagnostic system by selectively merging test syndromes such that it can effectively utilize the available training cases. / Experimental results on real industrial boards and an OpenRISC design demonstrate the effectiveness of the proposed solutions. / 半導體技術和設計自動化的高速發展開啟了電子產品的新紀元。百萬級別的設計尺寸和上G赫茲的操作頻率使得每百萬次採樣數的缺陷率繼續上升，缺陷顯現方式也日益微妙。 / 複雜電子板的診斷是一項極具挑戰的工作。調試人員通常通過分析診斷測試所產生的症狀，甄別有缺陷的元件。診斷的有效性和效率就極大地依賴於診斷測試的質量和調試人員的知識經驗，但是現在這些都是沒有確定性的。為了解決這一問題，本文提出一個新穎的針對板級功能性故障的代理輔助診斷系統AgentDiag。它幫助評估診斷測試的質量，並架起編寫診斷測試的測試程式員和從事實際診斷工作的調試人員之間的橋樑。 / 因為板級診斷的極度複雜，機器學習算法已經被提出來解決這一問題。但是這些基於推導的方法在早期很難達到好的效果，原因是過大的測試數量和相對較少的訓練數據。在度量Isolation Capability的引導下，能夠適應性地利用來自輕量級模型的知識去選取一個症狀集進行診斷。 / AgentDiag可以有效地提高診斷準確率，但是由於是直接剔除一部分測試症狀，所以有可能造成信息的丟失。本文進一步提出了一個測試症狀合併的方法來解決這一問題。那就是利用診斷測試和電路板的結構描述，我們可以適應性地利用選擇性合併的測試症狀來減少測試症狀的數目，從而有效地利用已有的測試數據。 / 來自實際的工業電路板和OpenRisc設計的實驗數據驗證了提出的方法的有效性。 / Sun, Zelong. / Thesis M.Phil. Chinese University of Hong Kong 2014. / Includes bibliographical references (leaves 47-51). / Abstracts also in Chinese. / Title from PDF title page (viewed on 12, October, 2016). / Detailed summary in vernacular field only. / Detailed summary in vernacular field only. / Detailed summary in vernacular field only. / Detailed summary in vernacular field only. / Detailed summary in vernacular field only.

In complex plasmonic nanostructures, the multiple metal-dielectric interfaces support several elementary modes of surface plasmon polariton. Hybridized surface plasmon polariton (HSPP) is formed due to the evanescent coupling between surface plasmon polaritons on different interfaces. In our first work, we studied the properties of HSPP in a metal-dielectric-metal waveguide with periodically varying refractive index, using Hamiltonian optics approach. We investigated the feasibility of light manipulation inside this structure by extracting the allowed phase orbits using the proposed quantization condition. Besides, the time series of position and wavevector of HSPP are simulated by solving the Hamiltonian equations. The result revealed three distinct HSPP modes formed inside the waveguide: confinement, propagation and retardation. Lastly, we investigated the usage of the proposed structure as an optical filter. / Nearly perfect absorption (NPA) refers to a phenomenon that the reflection and transmission of incident electromagnetic waves on a system are being suppressed, thus the energy of waves is being trapped and dissipated in the system. In our second work, a design of broadband, wide angle of incidence and polarization-independent nearly perfect absorber is proposed based on multiple surface plasmon resonances. The absorptance is computed to confirm NPA for TM and TE modes. Besides, the absorptance depends also on the thickness of the composite layer and this dependence is explained by the hybridized surface plasmon (HSP) formed inside the absorber. Particularly for TE mode, the broadband HSP fast wave which coupled efficiently with the incident light, can only be generated for proper thickness of the composite layer, in contrast to the previous proposal of fast wave generation mechanism using metal/epsilon-near-zero structure to yield narrow-band NPA by S.Feng. The proposed absorber can be used to construct light harvesting devices because of its high efficient energy absorption. / 在複合的等離子納米結構中的多個金屬-電介質介面能支持數個表面等離子激元(surface plasmon polariton)的基礎模態。而雜交化表面等離子激元(hybridized surface plasmon polariton)就是不同表面上的表面等離子激元因衰減性耦合而形成的。在我們第一個工作中,我們以哈密頓光學(Hamiltonian optics)研究了在有週期性折射率變化的金屬-電介質-金屬波導中雜交化表面等離子激元的特性。我們以所提出的量化條件析取出容許的相位軌跡,從而探究在此結構中操縱光波的可行性。此外,雜交化表面等離子激元的位置和波向量隨時間的變化會通過解哈密頓方程計算出來。結果顯示在此波導中,雜交化表面等離子激元有三種不同的模態:密閉,傳播,延滯。最後,我們探討了此結構作為光學過濾器的應用。 / 近完全吸收(Nearly perfect absorption)是指射在一系統上的電磁波的反射和傳輸都被壓制,而波的能量則被困鎖和消耗在系統中的一個現象。在我們第二個工作中,我們提出了一個基於多重表面等離子元共振的寬頻、廣入射角、與偏振無關的近完全吸收器設計。我們計算了吸引率以確認在TE及TM模態下的近完全吸收。此外,吸引率亦與複合層的厚度有關,而此關係能以在吸收器形成的雜交化表面等離子解釋。特別是TE模態時,能有效地與入射光耦合的寬頻雜交化表面等離子快波(Broadband HSP fastwave)只能在合適的厚度才能產生,與S.Feng所提出以金屬/近零介電常數材料結構產生快波,從而達至窄頻近完全吸收不同。因為高效能的能量吸引,我們提出的吸收器能作建構光收集裝置之用。 / Lee, Sze Fung = 在等離子吸收器中基於多重表面等離子元共振的寬頻近完全吸收 / 李時鋒. / Thesis M.Phil. Chinese University of Hong Kong 2014. / Includes bibliographical references (leaves 58-62). / Abstracts also in Chinese. / Title from PDF title page (viewed on 24, October, 2016). / Lee, Sze Fung = Zai deng li zi xi shou qi zhong ji yu duo chong biao mian deng li zi yuan gong zhen de kuan pin jin wan quan xi shou / Li Shifeng. / Detailed summary in vernacular field only. / Detailed summary in vernacular field only.