6,301 research outputs found
Worship and Culture: Foreign Country or Homeland? (Gláucia Vasconcelos Wilkey)
No full textHoiling Poon considers this multi-author overview of a seven-year project by the Lutheran World Federation
Ekstraksi Model Gummel Poon Dengan Metode Pencocokan Kurva
No full textSimulator rangkaian elektronika berbasis SPICE menerapkan model Gummel Poon banyak digunakan pelajar. Perancang harus memiliki parameter model dari devais elektronika sebelum melakukan analisis dengan bantuan komputer. Jika komponen yang digunakan diperoleh dari pasar, ada kemungkinan karakteristiknya tidak sesuai dengan lembar data dan / atau model dalam pustaka SPICE. Oleh karena itu perlu dikembangkan metode ekstrasi parameter model. Metode ekstaksi model Gummel Poon menerapkan analisis regresi telah diuji dan disimulasi. Hasilnya menunjukkan bahwa faktor kualitas kurva yang dicocokkan, R2, sangat dekat dengan 1. Hasil ini cukup memuaskan dalam simulasi.Kata Kunci— Ekstraksi, Gummel Poon, karakteristik statik, kuadrat terkecil, pencocokan kurva
Ekstraksi Model Gummel Poon dengan Metode Pencocokan Kurva
No full textSimulator rangkaian elektronika berbasis SPICE menerapkan model Gummel Poon banyak digunakan pelajar. Perancang harus memiliki parameter model dari devais elektronika sebelum melakukan analisis dengan bantuan komputer. Jika komponen yang digunakan diperoleh dari pasar, ada kemungkinan karakteristiknya tidak sesuai dengan lembar data dan / atau model dalam pustaka SPICE. Oleh karena itu perlu dikembangkan metode ekstrasi parameter model. Metode ekstaksi model Gummel Poon menerapkan analisis regresi telah diuji dan disimulasi. Hasilnya menunjukkan bahwa faktor kualitas kurva yang dicocokkan, R2, sangat dekat dengan 1. Hasil ini cukup memuaskan dalam simulasi.
Kata Kunci— Ekstraksi, Gummel Poon, karakteristik statik, kuadrat terkecil, pencocokan kurva
Flexible Citizenship in Wena Poon\u27s Short Stories: Writing at the Interstices of Asia and America
No full textProfessor Stewart Chang discusses the themes and interpretations of United States-based Singaporean author Wena Poon\u27s short stories through the lens of flexible citizenship
Gendered Fantasies and Transcultural Fandoms: Japanese Boys’ Love Subculture in Hong Kong
No full textPoon, Ka Tsun.Thesis M.Phil. Chinese University of Hong Kong 2016.Includes bibliographical references (leaves ).Abstracts also in Chinese.Title from PDF title page (viewed on …)
Polyline Simplification Using Quadric Error Metric with Bounded Error
No full text[[abstract]]©1999-We study the problem of polygonal line simplification. The objective is to seek a polygonal line of smaller size that approximates the original one well. We present an algorithm that is based on edge contraction. An edge contraction merges two adjacent vertices into a new vertex and this new vertex will be made the new endpoint of the uncontracted edges incident to the two vertices merged. Thus, repeated applications naturally yield a simplification algorithm. We implemented three algorithms QG, QGG, and based on this approach. QGG and QG support each edge contraction in O(log m) time, where m is the size of the current polygonal line, whereas QLG supports each edge contraction in O(1) time. The selection of the edge to be contracted is based on the quadric error produced, which was introduced by Garland and Heckbert in simplifying 3D polygonal surfaces. We use and improve their algorithm in 2D. If the quadric error of each edge contracted is at most ε2, we can guarantee that the directed Hausdorff distance from the simplified line to the original one is within ε. We can supply an error tolerance ε to QG, QGG and QLG and let edges be contracted repeatedly until the current minimum quadric error exceeds ε2. On the other hand QGG and QG can also allow the user to directly and interactively reduce the number of edges in the simplified line when deemed necessary. We have conducted some experiments to measure the approximation error of the simplified lines produced by our algorithms.[[department]]資訊工程學
A study of the acid lability and acute toxicity of dimethoxymethane in rats
No full textThe pH stability and acute oral toxicity of dimethoxymethane (DMM) in rats were studied, In in vitro studies, DMM was found to be stable in artificial gastric juice at pH 2.5 and above but readily hydrolyzed at pH2 and below, with 1 mole of DMM producing approximately 1 mole of formaldehyde and 2 moles of methanol. DMM incubated in sealed, excised stomachs appeared to equilibrate with the external incubation fluid over a 24-hour period without significant hydrolysis, In the toxicity study, three groups of female rats (n = 5) were administered, by gavage, phosphate-buffered saline (control), DMM (31 mmoles/kg body weight [bw]/day), or methanol (MeOH) (30 mmoles/kg bw/day), respectively, for 3 consecutive days and then sacrificed on day 5, Transient ataxia lasting about 30 minutes was observed in animals following DMM administration, increased urine volume was observed in the DMM group at the end of days 4 and 5, Markedly elevated level of formic acid was present in the urine of the MeOH group at days 1, 2, and 3, but not in the DMM group, Urinary ascorbic acid levels were increased In the DMM group on days 1, 2 and 3, and returned to baseline level at days 4 and 5, Microscopic examination detected no abnormal histological changes in the liver and kidneys of MeOH- or DMM-treated animals, No treatment effects were observed on the following endpoints: organ weights (liver, heart, thymus, kidneys), serum corticosterone, serum chemistry profile, hematology, hepatic phase 1 and phase 2 mixed-function oxidase activities, hepatic and serum thiobarbituric acid, hepatic glutathione, urinary protein, and urinary N-acetylglucosaminidase activity, These observations suggested that hydrolysis of DMM in the stomach required a gastric acidity below pH 2,5, At higher DW, intact DMM readily penetrated the stomach and therefore likely reached the circulation and other body tissues. There was no significant hydrolysis of orally administered DMM, and the acute effects were limited to transient ataxia and biochemical responses in the liver.PT: J; CR: *ACGIH, THRESH VAL TLVS CHEM *CCAC, 1993, GUID CAR US EXP AN *HSDB, 1998, HSDB *IARC, 1995, IARC MON EV CARC RIS, V62, P217 *US EPA, 1998, CHEM HAZ DAT AV STUD *USP, 1995, US PHARM, V23 BENINI L, 1995, GUT, V36, P825 BURCHELL B, 1981, METHOD ENZYMOL, V77, P169 BURKE MD, 1985, BIOCHEM PHARMACOL, V34, P3337 CHIVERTON SG, 1989, ALIMENT PHARM THERAP, V3, P403 CHU I, 1992, ORGANOHALOGEN COMPOU, V10, P17 DODGE L, 1994, NTIDDE94006949 GARGAS ML, 1989, TOXICOL APPL PHARM, V98, P87 GRADY S, 1986, J ANAL TOXICOL, V10, P1 HABIG WH, 1974, J BIOL CHEM, V249, P7130 JONES AW, 1993, CLIN CHEM, V39, P1837 KAO CH, 1998, J NUCL MED, V39, P1798 KONTUREK JW, 1993, SCAND J GASTROENTERO, V28, P401 LUBET RA, 1985, MUTAT RES, V142, P127 MAHE S, 1995, GASTROEN CLIN BIOL, V19, P20 MARICQ MM, 1998, 216 AM CHEM SOC NAT, V43, P578 MCLAUCHLAN G, 1989, GUT, V30, P573 MCMARTIN KE, 1980, AM J MED, V68, P414 POON R, 1992, P 4 ANN M INT SOC ST, P146 POON R, 1994, J BIOCHEM TOXICOL, V9, P297 POON R, 1995, INHAL TOXICOL, V7, P1195 ROGERS JM, 1993, TERATOLOGY, V47, P175 SAKANASHI TM, 1996, TERATOLOGY, V54, P198 SCHENKMAN JB, 1967, MOL PHARMACOL, V3, P113 TOMILINA LA, 1984, GIG TR PROF ZABOL, V6, P27 VANHERCK H, 1991, LAB ANIM, V25, P325 VINET B, 1987, CLIN CHEM, V33, P2204 YAGI K, 1982, LIPID PEROXIDE BIOL, P232; NR: 33; TC: 4; J9: INT J TOXICOL; PG: 7; GA: 331DTSource type: Electronic(1
CUHK electronic theses & dissertations collection
No full textPoon, Ivy.Thesis M.Phil. Chinese University of Hong Kong 2015.Includes bibliographical references.Abstracts also in Chinese.Title from PDF title page (viewed on 16, December, 2016)
Landslide trail extraction using fire extinguishing model
No full text202307 bcchVersion of RecordRGCOthersOtto Poon Charitable Foundation; Ministry of Science and Technology of the People's Republic of China; Hong Kong Polytechnic UniversityPublishedC
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