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Search Results: 1 - 10 of 295 matches for " Ooi; "
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Study on Test Compaction in High-Level Automatic Test Pattern Generation (ATPG) Platform  [PDF]
Ayub Chin Abdullah, Chia Yee Ooi
Circuits and Systems (CS) , 2013, DOI: 10.4236/cs.2013.44046

Advancements in semiconductor technology are making gate-level test generation more challenging. This is because a large amount of detailed structural information must be processed in the search process of automatic test pattern generation (ATPG). In addition, ATPG needs to deal with new defects caused by process variation when IC is shrinking. To reduce the computation effort of ATPG, test generation could be started earlier at higher abstraction level, which is in line with top-down design methodology that has become more popular nowadays. In this research, we employ Chen’s high-level fault model in the high-level ATPG. Besides shorter ATPG time as shown in many previous works, our study showed that high-level ATPG also contributes to test compaction. This is because most of the high-level faults correlate with the gate-level collapsed faults especially at input/output of the modules in a circuit. The high-level ATPG prototype used in our work is mainly composed by constraint-driven test generation engine and fault simulation engine. Experimental result showed that more reduced/compact test set can be generated from the high-level ATPG.

Enhancing the Yields of Phenolic Compounds during Fermentation Using Saccharomyces cerevisiae Strain 96581  [PDF]
Adam A. Banach, Beng Guat Ooi
Food and Nutrition Sciences (FNS) , 2014, DOI: 10.4236/fns.2014.521218
Abstract: Phenylethanol, tyrosol, and tryptophol are phenolic compounds or fusel alcohols formed via the Ehrlich pathway by yeast metabolism. These compounds can yield health benefits as well as contribute to the flavors and aromas of fermented food and beverages. This research shows that Saccharomyces cerevisiae Strain 96581 is capable of producing significantly higher levels of these three compounds when the precursor amino acids were supplemented into either the Chardonnay concentrate for wine-making or the malt concentrate for brewing English Ale. Strain 96581 can produce phenylethanol, tyrosol, and tryptophol as high as 434 mg/kg, 365 mg/kg, and 129 mg/kg, respectively, in the beer fermentation. The performance of Ale yeast WLP002 from White Labs Inc. was also analyzed for comparison. Strain 96581 outperformed WLP002 in the control beer, the amino acids supplemented beer, and the kiwi-beer background. This shows that Strain 96581 is more effective than WLP002 in converting the malt and the kiwi fruit supplements via its endogenous enzymes.
Study of Timing Characteristics of NOT Gate Transistor Level Circuit Implemented Using Nano-MOSFET by Analyzing Sub-Band Potential Energy Profile and Current-Voltage Characteristic of Quasi-Ballistic Transport  [PDF]
Chek Yee Ooi, Soo King Lim
World Journal of Nano Science and Engineering (WJNSE) , 2016, DOI: 10.4236/wjnse.2016.64016
Abstract: This paper presents the quasi-ballistic electron transport of a symmetric double-gate (DG) nano-MOSFET with 10 nm gate length and implementation of logical NOT transistor circuit using this nano-MOSFET. Theoretical calculation and simulation using NanoMOS have been done to obtain parameters such as ballistic efficiency, backscattering mean free path, backscattering coefficient, critical length, thermal velocity, capacitances, resistance and drain current. NanoMOS is an on-line device simulator. Theoretical and simulated drain current per micro of width is closely matched. Transistor loaded NOT gate is simulated using WinSpice. Theoretical and simulated value of rise time, fall time, propagation delay and maximum signal frequency of logical NOT transistor level circuit is closely matched. Quasi-ballistic transport has been investigated in this paper since modern MOSFET devices operate between the drift-diffusion and ballistic regimes. This paper aims to enable modern semiconductor device engineers to become familiar with both approaches.
Hyperaesthesia Following Genital Herpes: A Case Report
Catriona Ooi,Vijay Zawar
Dermatology Research and Practice , 2011, DOI: 10.1155/2011/903595
Abstract: We report an adult female patient who presented with sacral radiculopathy as incapacitating dysthesias following primary genital herpes simplex, which later recurred. Despite use of systemic antiviral treatment, the painful syndrome in our patient persisted. The success in treatment was seen only after the addition of amitriptyline hydrochloride. The case is being presented here for its rare manifestation and novel use of amitriptyline hydrochloride. 1. Case Presentation We present the case of a 64-year-old female teacher who presented to the sexual health clinic in Newcastle, Australia. Six weeks previously, the patient had attended her primary care doctor (PCD) with dysuria and was treated for a urinary tract infection; however, symptoms persisted. Several days later she noticed acute onset of bilateral vulval blisters. She was clinically diagnosed with genital herpes and commenced on valacyclovir 500?mg bd for one week. The blisters resolved within five days; however, she developed burning and exquisite sensitivity to touch in both inner thighs and in the left buttock extending down the left leg and including the sole of the left foot and toes. She found that at times, she was unable to walk and sit. She returned to her PCD who continued valacyclovir for another week; however, the burning persisted. On presentation to the sexual health clinic, the patient had completed six weeks of valacyclovir 500?mg bd with minimal improvement. Vulval ulcers had not recurred. The patient denied any other signs or symptoms and gave no history of prodromal symptoms. She was in a monogamous sexual relationship of four months duration with a male partner who was taking suppressive treatment for herpes simplex type 2 (HSV2) genital infection. She was unable to comment regarding her partners’ adherence with this treatment. They did not use condoms consistently. Her previous sexual partner, over 12 months previously, was her husband for 20 years. The patient had no prior history of genital herpes, and her PCD was not able to be contacted to confirm swab collection or diagnosis. General history was unremarkable; she had a total hysterectomy at age 40 with sparing of the ovaries and denied history of shingles; however, she had chicken pox as a child. She had commenced escitalopram oxalate 10?mg/d at the time of her marriage breakup four months previously. Examination of the genital area was unremarkable. Neurological examination of the lower limbs revealed hyperaesthesia in dermatomes S1, S2, and S3 on the left side. There was no other sensory abnormality or motor deficit
Pluripotency and its layers of complexity
Jolene Ooi, Pentao Liu
Cell Regeneration , 2012, DOI: 10.1186/2045-9769-1-7
Abstract: Pluripotency is denoted by the capacity of a self-renewing cell to develop into the three germ layers. The conception of pluripotency emerged in the Classical Greek period where rudimentary methods were employed to examine the development of organs within chick embryos [1]. These observations were left unexplored for two thousand years and awareness was rekindled in the Renaissance period where the invention of the microscope enhanced the resolution of developing embryos. This elicited the establishment of several landmark discoveries and escalated our understanding of vertebrate developmental processes.The first testimony of pluripotency on a petri dish was portrayed using inbred strains of mice. Spontaneous incidences of teratocarinomas arose at low frequencies in 129 strain of mice [2]. This led to the isolation of pluripotent stem cells that were able to regenerate tumours consisting of the three germ layers [3]. Subsets of pluripotent cell populations came in quick succession, where various cell types within the mouse embryo were isolated and snapshots of distinct developmental stages were captured [4-9]. Other than naturally occurring instances in normal development, artificial states that are reflective of pluripotency have been accomplished. Cells from developing Rana pipiens embryos were demonstrated to undergo nuclear transplantation and revert to a primitive state capable of developing into an entire organism [10]. This highlighted the capacity of a non-pluripotent cell to reset its epigenetic marks and convert to a pluripotent derivative. Termed as nuclear reprogramming, these findings were extended in mice and further exemplified in alternative methods [11-14].The easy manipulation and cultivation of mouse pluripotent stem cells have provided a convenient platform to study the independent developmental stages. Furthermore, comparison of these pluripotent states and their necessary environmental milieu for sustenance provides indications of developmental
Near-Field and Particle Size Effects in Coherent Raman Scattering
Chong Heng Raymond Ooi
PIER , 2011, DOI: 10.2528/PIER11051206
Abstract: Nonlinear optical processes have been used for sensitive detection of chemicals, optical imaging and spectral analysis of small particles. We have developed an exact theoretical framework to study the angular dependence of coherent anti-Stokes Raman scattering (CARS) intensity in the near field and far field for nanoparticle and microparticle. We obtain exact analytical solution for the CARS signal valid for arbitrary detection distance. Interesting angular dependence is found for nanoparticle, especially with near field detection. The study includes the effects of focused lasers and particle size on the CARS intensity distribution. We find that the detection distance and particle size do not affect the spectroscopic peaks of CARS. However, interference of reflected waves in nanoparticle can produce a dip in the backscattered spectrum.
Subjugated in the Creative Industries The Fine Arts in Singapore
Can-Seng Ooi
Culture Unbound : Journal of Current Cultural Research , 2011,
Abstract: The arts and culture are considered core in a creative industries strategy. But the promotion of the creative industries brings about revised notions of creativity. These revised notions are being applied to the arts. Creativity is now seen to be largely manageable. All individuals are made to believe that they can be creative. Not only that, creativity is seen to be a money spinner. Workers should tap into their creativity and bring about innovations in the work place. Pupils are taught to tap into their creativity and to think outside the box. Such views on creativity galvanize the public and enthuse many people into the creative industries. Such notions of creativity contrast against the fine arts. Regardless, as this paper examines the situation in Singapore, shows that fine artists in the city-state are finding themselves internalizing a market logic and have tied their art practices to economic value. Fine arts practices will not be as lucrative or popular as their counterparts in the other creative businesses; they will remain poor cousins in the creative industries. Essentially, the fine arts are being subjugated in the creative industries and the Singaporean art world is being changed.
Cacophony of Voices and Emotions Dialogic of Buying and Selling Art
Can-Seng Ooi
Culture Unbound : Journal of Current Cultural Research , 2010,
Abstract: The importance of galleries as go-betweens for artists and art buyers is acknowl-edged in art world research. Using a Bakhtinian dialogic approach, this article examines social encounters of three artists, two art buyers and one gallery sales executive in Singapore. Specifically, it looks into the social interactional dynam-ics of artists and art buyers when they trade directly. Situational ambiguities and emotional ambivalence arise during such meetings from the different expectations and demands that are imposed, which have the effect of placing the parties in-volved in conflicting social contexts. For instance, when art connoisseurs and art-ists discuss aesthetics, monetary value is not of primary concern, nonetheless when they want to trade, commercial concerns become central; this can lead to discomfort between the parties. Similarly, art buyers may want to go behind the scenes to know more about the artist and the art practice; getting away from the glitter of the commercial gallery and into the modest art studio for an authentic experience may reveal too much for visitors; such experiences may break their illusion of the glamorous artist. This article looks at the microscopic interaction between artists and art buyers and shows how the ambiguities and ambivalence that can be generated by their encounters become constraining factors in encour-aging artists and art buyers to trade directly, by-passing commercial art galleries and dealers.
The Functioning Process of Logistics: A case of Licensed Manufacturing Warehouse (LMW) in Malaysia
Ooi Seng Kong
Business Intelligence Journal , 2009,
Connection between Wigner distribution of nonclassical fields and collapse-revival of atomic dynamics
C. H. Raymond Ooi
Physics , 2008,
Abstract: The transient evolution of nonclassical radiation fields interacting with an atom in a cavity is correlated to the atomic dynamics. Connection between the atomic phases of collapse and revival, and the Wigner function pattern is explored. Initial classical coherent field can evolve into nonclassical field. Schrodinger cat state field is generate during the atomic collapse phase. For initial Schrodinger cat field state, the state dissolves with time but revives during the atomic phase that corresponds with the initial phase. More intricate but orderly characteristics are found between the collapse-revival dynamics and the patterns of the Wigner function for initial thermal field.
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