Papers by Nhật Quyên Nguyễn
Social Science Research Network, 2016
We gratefully acknowledge helpful comments from Mary Barth (the editor), two anonymous reviewers ... more We gratefully acknowledge helpful comments from Mary Barth (the editor), two anonymous reviewers and workshop participants at the
Translation and Interpreting : the International Journal of Translation and Interpreting Research, Jul 26, 2021
This study provided a novel flipped classroom model with a detailed combination of in-class and o... more This study provided a novel flipped classroom model with a detailed combination of in-class and out-of-class activities to teach a Vietnamese-English Translation module. The study aimed to (1) provide an in-depth insight into how the model was actually implemented in a specific scenario to make the teaching-learning process more interesting and meaningful, and (2) investigate the effectiveness of the flipped classroom model towards learners' translation performance through various assessments. 39 English-majored juniors at Banking University of Ho Chi Minh City, Vietnam participated in the study during the second semester of the 2018-2019 academic year. The study implemented a case-study mixed method design, applying assessment analysis and content analysis of one specific learning scenario to clarify how the flipped learning model contributed to the training process. Results show that a careful design of the flipped model contributed to the relevant literature on how to implement flipped learning in actual classroom settings, but also effectively improved learners' performance in translation studies.
A Case Study of Technology-Assisted Flipped Learning in Enhancing Learner Translation Capabilities and Its Mitigated Challenges
International Journal of Computer-Assisted Language Learning and Teaching, 2022
This study presents a flipped classroom approach tailored to provide dynamic instructional learni... more This study presents a flipped classroom approach tailored to provide dynamic instructional learning of one translation module in Vietnam. The model took consideration of relevant factors of Activity theory (instruments, rules, community and division of labour) to (1) investigate how it could re-orientate learners’ translation habits, and (2) find out the mitigated challenges encountered by Vietnamese learners. 39 junior students at a public university in Vietnam participated in the study. The research implemented a case study design, using semi-structured interviews to examine in depth the benefits of this flipped setting and its actual challenges. The collected findings revealed that this approach could not only bridge the gaps in the relevant literature of flipped learning, but also could improve learners’ habits to use appropriate translation strategies. Finally, challenges faced by learners during the implementation were minimised, thanks to the systematic structure of the flipp...
Journal of Virus Eradication, 2016
Background: Limited data are available on HIV viral suppression rates among men and women on anti... more Background: Limited data are available on HIV viral suppression rates among men and women on antiretroviral therapy (ART) and factors associated with HIV RNA viral load (VL) suppression in Vietnam. Methods: We conducted a cross-sectional survey of 1255 adult patients on ART for at least 1 year across four provinces in Vietnam. Data collection included a standardised questionnaire, routine laboratory testing, and an HIV VL assay. Bivariate and logistic multivariate analyses were conducted to assess viral suppression rates and factors associated with unsuppressed HIV VL. Results: The median age was 34.5 years and the median time on ART was 46 months. Gender was 66% male (n=828) and 34% female (n=427). HIV viral suppression below 1000 copies/mL was 93%. Viral suppression among woman was not significantly different than among men (93.7% vs 92.9%; P=0.59). On multivariate analysis, unsuppressed HIV VL was independently associated with lower CD4 cell count, social isolation, high stigma, not receiving a single-tablet daily regimen, multiple late appointments in past year, and immunological failure. Conclusion: On-treatment viral load suppression rates in Vietnam are high and already exceed the UNAIDS 90% target for viral suppression on ART. Gender does not impact viral suppression rates of patients on ART in Vietnam. Access to routine viral load testing should be improved, adherence monitoring and counselling streamlined, and ART regimens simplified to maintain viral suppression rates, as more people start ART. Psychological and social factors are also associated with unsuppressed HIV VL, necessitating treatment support interventions to address social isolation and stigma among people living with HIV in Vietnam.
Non Drug Therapy in Arterial Hypertension Role of Fermented Soybean Nattokinase NSK-ND
Journal of Medicine and Pharmacy, 2015
Background: So far no studies in Vietnam on the effects of Nattokinase on blood pressure. We impl... more Background: So far no studies in Vietnam on the effects of Nattokinase on blood pressure. We implement the project to assess the effects of Nattokinase on blood pressure, markers of atherosclerosis, lipid profile. Subjects and methods: Subjects aged 18 to 70 years old was diagnosed with hypertension and pre-hypertension levels 1, randomly divided into two groups: group Nattokinase and placebo. Evaluate the atherosclerosis with index pulse wave velocity (PWV) and ankle-index forearm (ABI) by machine OMRON Office 1000 plus. Results: A total of 71 subjects, mean age 47.66 ± 9.37, in which 37 subjects Nattokinase group (92.50%), 34 subjects placebo group (85.00%) meet the 8-week study period research. Nattokinase reduce significantly the blood pressure in the time of 2 weeks, 4 weeks, 6 weeks, 8 weeks. (p <0.001). Nattokinase reduce also PWV and PP more than placebo (p <0.05), stabilising total cholesterol and LDL-C more than placebo (p <0:01), however, decreased glucose withou...
Recommended Citation Recommended Citation Nguyen, Nhat (Nate) Q. "The impact of psychological bia... more Recommended Citation Recommended Citation Nguyen, Nhat (Nate) Q. "The impact of psychological biases on accounting choices: from evidence of managerial sentiment and asymmetric timely loss recognition." PhD (Doctor of Philosophy) thesis,
PLOS ONE, 2019
6. Has the health worker asked about the following (if not part of the presenting complaints)? 6a... more 6. Has the health worker asked about the following (if not part of the presenting complaints)? 6a. Duration of cough 6a. Duration of cough (response from caretaker) Yes No 6b. Night or early morning cough Yes No 6b. Night or early morning cough (response from caretaker) Yes No 6c. Recurrent cough Yes No 6c. Recurrent cough (response from caretaker) Yes No 6d. Difficulty in breathing during this illness Yes No 6d. Difficulty in breathing during this illness (response from caretaker) Yes No 6e. Recurrent difficulty in breathing Yes No 6e. Recurrent difficulty in breathing (response from caretaker) Yes No 6f. Noisy breathing (If YES, note the caretakers description of the breathing) Yes No 6f. Noisy breathing (katsoulia) Yes No 6f. Noisy breathing (If YES, note the caretakers description of the breathing) (response from caretaker) Yes No 6f. Noisy breathing (response from caretaker) Yes No 6g.Wheezing during this illness Yes No 6g.Wheezing (whistling) during this illness Yes No 6g. Wheezing during this illness (response from caretaker) Yes No 6g. Wheezing (whistling) during this illness (response from caretaker) Triggers asked (Ρωτήθηκαν οι εκλυτικοί παράγοντες)? Yes Yes N N 7. The above symptoms occur or worsen in presence of (note that questions may only appear following answers to previous questions) 7a. Dusty environment Yes No 7a. Dusty environment (response from caretaker) Yes No 7b. Respiratory viral infections-flu Yes No 7b. Respiratory viral infections-flu (response from caretaker)
International Journal of Computer-Assisted Language Learning and Teaching, 2019
Taking cognizance of challenges of 21st century learning and the ubiquitous technologies availabl... more Taking cognizance of challenges of 21st century learning and the ubiquitous technologies available, a course applying flipped classroom model with a detailed combination of in-class and out-of-class activities was utilized to teach an academic writing module. The study aimed to (1) find out the effects of flipped classroom model towards improving learners' writing achievements and (2) investigate learners' attitudes towards this approach. 40 English-major freshmen at the Banking University of Ho Chi Minh City, Vietnam participated in the study during the second semester of the 2016-2017 academic year. Both quantitative and qualitative data were collected to ensure the reliability as well as the validity of the results. Analysis of this data revealed that this model was beneficial as it not only improved learners' performance in the final exam but also brought about positive attitudes towards the learning process. Finally, suggestions on how the model could be improved an...
Surfaces, 2019
Hematite is a low band gap, earth abundant semiconductor and it is considered to be a promising c... more Hematite is a low band gap, earth abundant semiconductor and it is considered to be a promising choice for photoelectrochemical water splitting. However, as a bulk material its efficiency is low because of excessive bulk, surface, and interface recombination. In the present work, we propose a strategy to prepare a hematite (α-Fe2O3) photoanode consisting of hematite nanorods grown onto an iron oxide blocking layer. This blocking layer is formed from a sputter deposited thin metallic iron film on fluorine doped tin oxide (FTO) by using cyclic voltammetry to fully convert the film into an anodic oxide. In a second step, hematite nanorods (NR) are grown onto the layer using a hydrothermal approach. In this geometry, the hematite sub-layer works as a barrier for electron back diffusion (a blocking layer). This suppresses recombination, and the maximum of the incident photon to current efficiency is increased from 12% to 17%. Under AM 1.5 conditions, the photocurrent density reaches appr...
Topological structural analysis of digitized binary images by border following
Computer Vision, Graphics, and Image Processing, 1985
Two border following algorithms are proposed for the topological analysis of digitized binary ima... more Two border following algorithms are proposed for the topological analysis of digitized binary images. The first one determines the surroundness relations among the borders of a binary image. Since the outer borders and the hole borders have a one-to-one correspondence ...
SSRN Electronic Journal, 2016
We gratefully acknowledge helpful comments from Mary Barth (the editor), two anonymous reviewers ... more We gratefully acknowledge helpful comments from Mary Barth (the editor), two anonymous reviewers and workshop participants at the
A 1-4 Gbps quad transceiver cell using PLL with gate-current leakage compensator in 90nm CMOS
2004 Symposium on VLSI Circuits. Digest of Technical Papers (IEEE Cat. No.04CH37525)
CMOS technology with a IV nominal supply. To minimize area and power consumption, the cell uses a... more CMOS technology with a IV nominal supply. To minimize area and power consumption, the cell uses a single dual-loop PLL. Gate-current leakage compensator is used to mitigate gate-current leakage in the PLL loop-filter capacitor. The quad cell consumes 73mWilink at 3.125Gbps ...
Design challenges of low-power and high-speed memory interface in advanced CMOS technology
ABSTRACT Design requirements for low-power and high-speed memory interfaces in mobile systems are... more ABSTRACT Design requirements for low-power and high-speed memory interfaces in mobile systems are discussed within the context of CMOS process scaling. Key challenges include process variations, low Vdd/Vth ratio, interconnect parasitics, and model accuracy of key process parameters. It is shown that careful system architecture along with appropriate circuit techniques allow mobile memory interface to meet aggressive performance and power targets with conventional technology.
Design challenges for high performance and power efficient graphics and mobile memory interfaces
Proceedings of 2011 International Symposium on VLSI Technology, Systems and Applications, 2011
Future generation graphics applications require more than 1TB/s memory bandwidth with a constant ... more Future generation graphics applications require more than 1TB/s memory bandwidth with a constant power budget as in today's systems. In contrast, future mobile applications require power optimized memory interfaces that can provide sufficient memory bandwidth on the order of 25GB/s. The difference in the optimization criteria results in different design challenges and consequently, different architectural and circuit-level design tradeoffs. In this paper, we compare two different memory interface design examples, one from each area operating at 16Gbps and 3.2Gbps per pin respectively, and highlight their major differences in terms of driver and receiver design, as well as clock generation and distribution. We will also discuss some of the problems facing future generations of memory interfaces that push the limits of performance and power efficiency.
Blind Superresolution with Generalized Cross-Validation using Gauss-Type Quadrature Rules
| Superresolution reconstruction producesa high resolution image from a set of aliased low resolu... more | Superresolution reconstruction producesa high resolution image from a set of aliased low resolutionimages. We model the low resolution framesas blurred and down-sampled, shifted versions of thehigh resolution image. In many applications, the blurringprocess, i.e., point spread function (PSF) parametersof the imaging system, is not known. In ourblind superresolution algorithm, we rst estimate thePSF parameters from the rawdatausing the generalizedcross-validation
2008 IEEE Symposium on VLSI Circuits, 2008
This paper describes a 16-Gb/s differential bidirectional I/O transceiver cell in an emulated 40n... more This paper describes a 16-Gb/s differential bidirectional I/O transceiver cell in an emulated 40nm DRAM process that has a fan-out of four inverter delay (FO4) of 45ps, resulting in a bit time that is only 1.4 FO4 delays long. The transceiver implements several techniques to achieve low jitter despite the slow process and constrained power consumption, including a quad rate clocking with closed-loop quadrature correction, a shared LC-PLL with an octagonal inductor in a three-metal process, and a data-dependent regulator. The transceiver has measured random jitter of 380fs rms at the transmitter output and BER < 10 -14 while consuming 8mW/Gb/s.
An Adaptive Body-Biased Clock Generation System in 28nm CMOS
2014 27th International Conference on VLSI Design and 2014 13th International Conference on Embedded Systems, 2014
ABSTRACT An adaptive forward body biasing technique is implemented in a clock generation and dist... more ABSTRACT An adaptive forward body biasing technique is implemented in a clock generation and distribution test chip for memory interface applications to enable wide-range and high-fidelity operation. The proposed clock generation system employs a self-body-biased ring voltage-controlled oscillator (VCO) in a phase-locked loop (PLL) to adaptively adjust device body voltages over process and temperature variations. Moreover, a differential body-biasing technique incorporated in a duty cycle corrector (DCC) achieves effective correction range with minimal power overhead. The adaptive self-body-biasing technique extends PLL frequency locking range by more than 20 percent while reducing power supply induced jitter (PSIJ) by maximum 25 percent for increased yield and reliable operation.
Design and characterization of a 12.8GB/s low power differential memory system for mobile applications
2009 IEEE 18th Conference on Electrical Performance of Electronic Packaging and Systems, 2009
Page 1. Design and Characterization of a 12.8GB/s Low Power Differential Memory System for Mobile... more Page 1. Design and Characterization of a 12.8GB/s Low Power Differential Memory System for Mobile Applications Dan Oh, Sam Chang, Chris Madden, Joong-Ho Kim, Ralf Schmitt, Ming Li,Chuck Yuan Fred Ware, Brian Leibowitz, Yohan Frans, and Nhat Nguyen Rambus Inc. ...
Lecture Notes in Computer Science, 2008
Segmentation of vessels in biomedical images is important as it can provide insight into analysis... more Segmentation of vessels in biomedical images is important as it can provide insight into analysis of vascular morphology, topology and is required for kinetic analysis of flow velocity and vessel permeability. Intravital microscopy is a powerful tool as it enables in vivo imaging of both vasculature and circulating cells. However, the analysis of vasculature in those images is difficult due to the presence of cells and their image gradient. In this paper, we provide a novel method of segmenting vessels with a high level of cell related clutter. A set of virtual point pairs ("vessel probes") are moved reacting to forces including Vessel Vector Flow (VVF) and Vessel Boundary Vector Flow (VBVF) forces. Incorporating the cell detection, the VVF force attracts the probes toward the vessel, while the VBVF force attracts the virtual points of the probes to localize the vessel boundary without being distracted by the image features of the cells. The vessel probes are moved according to Newtonian Physics reacting to the net of forces applied on them. We demonstrate the results on a set of five real in vivo images of liver vasculature cluttered by white blood cells. When compared against the ground truth prepared by the technician, the Root Mean Squared Error (RMSE) of segmentation with VVF and VBVF was 55% lower than the method without VVF and VBVF.
Power-efficient I/O design considerations for high-bandwidth applications
2011 IEEE Custom Integrated Circuits Conference (CICC), 2011
Abstract Power-efficiency results from several generations of I/O interfaces with specific goals ... more Abstract Power-efficiency results from several generations of I/O interfaces with specific goals are presented as well as the tradeoffs made within and across those designs. Foundational work in active-power reduction at a single rate for a symmetric system, the ...
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Papers by Nhật Quyên Nguyễn