14,058 research outputs found
Control and Filtering for Discrete Linear Repetitive Processes with H infty and ell 2--ell infty Performance
No full textRepetitive processes are characterized by a series of sweeps, termed passes, through a set of dynamics defined over a finite duration known as the pass length. On each pass an output, termed the pass profile, is produced which acts as a forcing function on, and hence contributes to, the dynamics of the next pass profile. This can lead to oscillations which increase in amplitude in the pass to pass direction and cannot be controlled by standard control laws. Here we give new results on the design of physically based control laws for the sub-class of so-called discrete linear repetitive processes which arise in applications areas such as iterative learning control. The main contribution is to show how control law design can be undertaken within the framework of a general robust filtering problem with guaranteed levels of performance. In particular, we develop algorithms for the design of an H? and dynamic output feedback controller and filter which guarantees that the resulting controlled (filtering error) process, respectively, is stable along the pass and has prescribed disturbance attenuation performance as measured by and – norms
Lam Yu oral history interview and transcript
No full textThis recording and transcript form part of a collection of oral history interviews conducted by the Chao Center for Asian Studies at Rice University. This collection includes audio recordings and transcripts of interviews with Asian Americans native to or living in Houston.Born in 1977 in Taishan, Guangdong, China, Dr. Lam Yu currently serves as an Associate Teaching Professor of Physics and Astronomy at Rice University. In Hong Kong, where he grew up, Yu attended Heoi Ta Tung Primary School and learned the importance of a good education from a young age. He moved to the US shortly before completing elementary school. Having attended two different elementary schools on opposite sides of Houston, he recalls how each neighborhood’s affluence impacted its quality of public education. Later, Yu attended Trinity University for his undergraduate education. There, he not only realized that he wanted to pursue physics as a future career path, but also made some of his closest friends who he still keeps in touch with today.
After completing college, Yu attended graduate school at Rice University, and then occupied a post-doctoral research position at the National Institute of Standards and Technology (NIST) in Maryland. Yu’s original plan was to become tenure faculty, so following his post-doc, he accepted a tenure track position at the University of Memphis. However, when he and his wife were expecting their firstborn child, Yu realized that Memphis was not his ideal environment to raise a family in, because it was so segregated. As a result, Yu left Memphis and accepted a teaching position at Rice University. Throughout his nine years of teaching physics and astronomy at Rice, he has continuously honed his teaching skills, aiming to cultivate an inclusive classroom environment that supports Rice’s diverse student body.
Along with his wife and three children, Yu looks forward to forming more personal connections with students as the newly appointed Head Residential Associate at Hanszen College. Outside of his career, he enjoys spending time with his kids, reading, listening to podcasts and audiobooks, traveling, and experimenting with various projects
The “mobile” face of contemporary China
No full textThe adoption and diffusion of the mobile phone has been exceptionally rapid in mainland China, especially in its capital Beijing and the coastal industrialized towns. With almost half a billion mobile phones, China has rapidly become the biggest market for this technology and one of the world’s leading nations in the production of information and communication technologies. In the last years also the amount of qualitative research devoted to ICTs in China is increased, while that of quantitative studies is still limited. This chapter describes a quantitative research study, specifically focused on the appropriation and domestication of the mobile phone in China. On the basis of questionnaires that were personally administered to a convenience sample of 487 respondents, the design of this research attempts to answer the following research question: How the relational sphere in China is reshaped by the massive use of the mobile phone? And then are there striking differences between the attitudes, behaviours, and practices associated with mobile phone use in China and in the West? This is a very broad research topic, but in this chapter we confine our examination to the social implications of the mobile phone use on some aspects of the relational sphere. A sample of 487 respondents can hardly provide a basis for generalizations about the Chinese population as a whole. However, the results of this study will serve to indicate the most important patterns of mobile phone use, which would be a fruitful subject for future research. Thus, the data presented here will provide direction for further inquiries into various aspects of mobile phone use in China.Department of Applied Social Science
KK1-0986 - Gandau yang mare a lam (The Gandau Yang village) with English translation
No full textTranslation (Rita Seng Mai) Now, I would like to tell you about how we named that village 'Gandau Yang'. When the village was first settled many years ago, people from east and west came to Gandau Yang village. Everyone loved living there. There was no history of the villagers leaving the village. The Chinese people knew that village as 'Gandau Yang'. The village has been called Gandau Yang since then. Transcription (Lu Awng) Ya ngai tsun na tsun dan mayu ai lam gaw gandau yang mare ngu na shamying wa ai lam hpe e tsun hkai dan matu ai. Gandau yang mare gaw moi shawng de e ndai gandau mare nnan tai wa ai ahkying aten hta e da tsan tsan de kaw na e sinpraw sinna da 2 maga de shang wa ai lam de na dai de na masha ni, kadai mi sa sa gandau yang kaw e sa sai masha ni sa du sai masha ni gaw nhtang pru mat wa ai lam nmai nga ai da. Dai majaw gandau yang miwa ni gaw gandau nga tsun ai i, gandau ngu na tsun ai da. Dai hpe she dai ni du hkra gandau yang mare ngu na e shingteng amying nga mat na dai ni du hkra dai mare hpe e gandau yang ngu na shamying la ma ai da, dai hte sha re. . Language as given: Jinghpa
PARTIKEL LAM AMR DAN LAM DU’A BESERTA MA’MULNYA DALAM AL-QURAN (ANALISIS MORFOLOGIS DAN SINTAKSIS)
No full textLam amr dan lam du’ā merupakan salah satu ‘amil jazm yang menjazmkan satu fi’l mudlāri’, yang mempunyai makna thalab (permintaan). Penelitian ini membahas tentang lam amr dan lam du’ā dalam al-Quran. Lam amr mempunyai makna perintah sedangkan lam du’ā mempunyai makna do’a. Jenis fi’l mudlāri’ yang terinfleksi lam amr dan lam du’ā menjadikan penanda gramatikal yang berbeda-beda.
Rumusan masalah pada penelitian ini adalah 1) Apa saja lam amr dan lam du’ā dalam al-Qur’an? (2) Bagaimana jenis fi’l mudlāri’ yang terinfleksi lam amr dan du’ā dalam al-Qur’an? (3) Apa penanda gramatikal fi’l mudlāri’ yang terinfleksi lam amr dan lam du’ā dalam al-Qur’an? Penelitian ini merupakan penelitian kualitatif dengan menggunakan desain penelitian library research. Pengumpulan data dilakukan dengan menggunakan metode dokumentasi. Instrumen yag digunakan dalam penelitian ini berupa kartu data dan lembar rekapitulasi data. Analisis data menggunakan metode distribusional teknik bagi unsur langsung.
Hasil penelitian ini ditemukan 80 data lam amr dan 1 data lam du’ā dalam al-Qur’an. Berdasarkan konsonan pembentuknya, peneliti menemukan 42 fi’l mudlāri’ shachīh dan 39 fi’l mudlāri’ mu’tal. 42 fi’l mudlāri’ shachīh meliputi 28 fi’l shachih berjenis sālim, 8 fi’l shachīh berjenis mahmūz, dan 6 fi’l shachih berjenis mudla’af. Adapun peneliti menemukan 9 fi’l mudlāri’ mu’tal berjenis mitsāl, 9 fi’l mu’tal berjenis ajwāf, 17 fi’l mu’tal berjenis nāqish dan 4 fi’l mu’tal berjenis lafīf mafrūq yang dimasuki lam amr dan lam du’ā. Berdasarkan keaslian bentuk dan jumlah konsonannya peneliti menemukan 48 fi’l berjenis mujarrad dan 33 fi’l berjenis māzid. Berdasarkan keberadaan objeknya peneliti menemukan 19 fi’l berjenis lāzim dan 62 fi’l berjenis muta’addiy. Berdasarkan gendernya peneliti menemukan 76 fi’l berjenis mudzakkar dan 5 fi’l berjenis muannats. Berdasarkan bilangannya peneliti menemukan 51 fi’l berjenis mufrad (tunggal) dan 30 fi’l berjenis jama’ (jamak) sedangkan fi’l yang berjenis mutsannā (dual) tidak ditemukan. Berdasarkan persona atau pelaku peneliti menemukan 1 fi’l pelaku utama dan 80 fi’l pelaku ketiga sedangkan fi’l pelaku kedua tidak ditemukan. Berdasarkan keberadaan subjeknya peneliti menemukan 81 fi’l berjenis ma’lūm (aktif) dan fi’l berjenis majhūl (pasif) tidak ditemukan. Penanda gramatikal fi’l mudlāri’ yang dimasuki lam amr dan lam du’ā dalam al-Qur’an terdiri atas 40 data yang ditandai dengan sukun, 28 data yang ditandai dengan Membuang nun, dan 12 data yang ditandai dengan Membuang huruf ‘illati dan 1 data mabniy fatchah
Laser-assisted machining of Inconel 718 with carbide and ceramic inserts
No full textLaser assisted machining (LAM) can improve the machinability of materials by locally heating the material prior to its removal. The work presented here is a study of the laser assisted machining of Inconel 718 (NiCr19FeNb at 46 HRc) with carbide and ceramic insert. The tests have shown a reduction in the cutting force, and have highlighted the impact of laser assistance on the integrity surface (roughness, appearance, residual stress) and the tool life
Modulasi Imunitas Mencit (Mus musculus) yang Diinfeksi Salmonella thypi Setelah Diinduksi Ekstrak Daun Moringa oleifera Lam
No full textKejadian kasus demam tifoid yang disebabkan oleh Salmonella thypi masih menjadi masalah di negara berkembang, dan masih dianggap penyebab kematian cukup tinggi. Terjadinya kasus demam tifoid disebabkan oleh sistem imunitas yang mengalami defesiensi sehingga sistem imunitas tubuh, terutama imunitas adaptif tidak dapat bekerja secara maksimal. Maka untuk mengatasi masalah tersebut, dapat dilakukan dengan cara menstimuli menggunakan agen imunomodulator dari luar tubuh, salah satunya menggunakan daun Moringa oleifera Lam. Adapun tujuan dari penelitian ini untuk mengetahui modulasi imunitas Mencit ( Mus musculus ) yang diinfeksi S. thypi setelah diinduksi ekstrak daun Moringa oleifera Lam. Penelitian ini merupakan penelitian eksperimental dengan menggunakan rancangan acak lengkap (RAL) faktorial dengan 4 perlakuan dan 4 kali ulangan. Data hasil flowsitometri dianalisis menggunakan ANOVA ( Analysis of Variance ) dengan signifikasi 0,05% dan apabila diperoleh hasil yang signifikan diuji lanjut menggunakan BNJ. Adapun variabel yang diukur meliputi sel CD34 + (di sumsum tulang), CD4 + CD8 + (di timus), CD4 + ,CD8 + , CD4 + CD25 + , CD4 + CD62L dan CD4 + IFN- γ (di limpa). Hasil penelitian menunjukkan bahwa pemberian ekstrak daun M. oleifera Lam dapat meningkatkan modulasi imunitas mencit dengan cara, berperan sebagai imunostimulan dan imunosupresi. Dosis ekstrak daun M. oleifera Lam yang berfungsi sebagai imunostimulan untuk kelompok perlakuan mencit non infeksi terdapat pada pemberian dosis 42 mg/kg BB, sedangkan untuk mencit yang diinfeksi S. thypi terlihat pada dosis 14 mg/kg BB. Adapun pemberian ekstrak daun M. oleifera Lam yang berfungsi sebagai imunosupresi pada kelompok perlakuan mencit non infeksi terdapat pada pemberian dosis 84 mg/kg BB dan untuk kelompok perlakuan mencit diinfeksi S. thypi terlihat pada dosis 42 mg/kg BB
Abstraction Refinement Guided by a Learnt Probabilistic Model
No full textThe core challenge in designing an effective static program analysis is to find a good program abstraction -- one that retains only details relevant to a given query. In this paper, we present a new approach for automatically finding such an abstraction. Our approach uses a pessimistic strategy, which can optionally use guidance from a probabilistic model. Our approach applies to parametric static analyses implemented in Datalog, and is based on counterexample-guided abstraction refinement. For each untried abstraction, our probabilistic model provides a probability of success, while the size of the abstraction provides an estimate of its cost in terms of analysis time. Combining these two metrics, probability and cost, our refinement algorithm picks an optimal abstraction. Our probabilistic model is a variant of the Erdos-Renyi random graph model, and it is tunable by what we call hyperparameters. We present a method to learn good values for these hyperparameters, by observing past runs of the analysis on an existing codebase. We evaluate our approach on an object sensitive pointer analysis for Java programs, with two client analyses (PolySite and Downcast)
Buskers as agents of change in Hong Kong
No full textWhile busking can provide entertainment and contribute to community development, it can also stimulate discussions and debates within the community, prompting individuals to reflect on political and social crises. This is the case of post-pandemic Hong Kong, where citizens’ lives are tightly controlled; following a series of social movements, public gatherings have been prohibited due to questionable social distancing measures and the closure of pedestrian zones. This article presents a case study that examines the role of buskers as agents of change through community music engagement. Data were collected through semi-structured interviews with three buskers, participant observation and field notes taken during busking events. The findings from the conversation analysis revealed that buskers and citizens’ participation in busking activities helped cultivate their creative expression of ideas, empowering them to transcend the rigid societal structure and unequal power relations between authorities and citizens, enabling social advocacy efforts such as reclaiming lost public space, expanding the community into the online realm, and fostering a cultivated mindset of ‘becoming’ that sustains the possibilities of autonomy within the community.<br/
REDUCTION OF THE VIBRATION-ROTATION-LAM HAMILTONIAN
No full textAuthor Institution: Department of Physics, Texas Tech UniversityThe vibration-rotation-LAM Hamiltonian requires two independent separation conditions to reduce the Coriolis interaction and the vibration-LAM kinetic energy interaction. In the limit of the LAM approaching a SAM, the effective vibration-rotation Hamiltonian and/or energy must reduce to the usual vibration-rotation Hamiltonian when no internal motion is a LAM. We show how to perform this reduction, especially as it relates to the T-and R-transformations and the normal coordinate transformation
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