Bảo Trần - Academia.edu (original) (raw)

Papers by Bảo Trần

Mathematics, 2021

A new formulation of relativistic quantum mechanics is presented and applied to a free, massive, ... more A new formulation of relativistic quantum mechanics is presented and applied to a free, massive, and spin-zero elementary particle in the Minkowski spacetime. The reformulation requires that time and space, as well as the timelike and spacelike intervals, are treated equally, which makes the new theory fully symmetric and consistent with the special theory of relativity. The theory correctly reproduces the classical action of a relativistic particle in the path integral formalism, and allows for the introduction of a new quantity called vector-mass, whose physical implications for nonlocality, the uncertainty principle, and quantum vacuum are described and discussed.

Physics, 2020

Novel gauge functions are introduced to non-relativistic classical mechanics and used to define f... more Novel gauge functions are introduced to non-relativistic classical mechanics and used to define forces. The obtained results show that the gauge functions directly affect the energy function and allow for converting an undriven physical system into a driven one. This is a novel phenomenon in dynamics that resembles the role of gauges in quantum field theories.

Arthritis care & research, Jan 8, 2018

To compare and contrast perspectives of patients with arthritis and rehabilitation professionals ... more To compare and contrast perspectives of patients with arthritis and rehabilitation professionals on starting and sustaining use of physical activity trackers (PATs). We conducted focus groups with patients, physiotherapists, and occupational therapists, in Ontario, Alberta or British Columbia, Canada. To be eligible, patients reported a diagnosis of inflammatory or osteo- arthritis. Rehabilitation professionals reported at least 40% of their caseload dedicated to arthritis care. Participants had any level of experience with PATs. A thematic analytic approach was used. Three themes were identified: 1) Anticipating sharing objective measures of physical activity: Participants agreed PATs had potential to improve consultations between patients with arthritis and rehabilitation professionals, but were uncertain as to how to achieve this potential; 2) Perceived or experienced barriers to start or continue using a PAT: Participants shared doubts about whether existing PATs would meet spec...

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BMJ open, Jan 17, 2018

To better understand, based on patient partners' experiences, benefits and risks in patient p... more To better understand, based on patient partners' experiences, benefits and risks in patient partner-researcher relationships in a health research setting. Qualitative interviews with thematic analysis informed by a relational ethics lens. A multidisciplinary health research centre in Vancouver, Canada. This study was codeveloped by patient partners and researchers at the centre. 22 people living with arthritis, with experience as members of a patient advisory board at the research centre from 1 month to 10 years. We identified three main themes: (1) Being Heard: Participants had experienced uncomfortable emotions (eg, feelings of insecurity) in their relationships with researchers. The discomfort, however, was minimised by the demonstration of mutual respect in their interactions. Specifically, participants valued environments without a hierarchy between patient partners and researchers, where contributions of each party were considered equally important, and where patients'...

Journal of dermatological science, Jan 18, 2016

Please cite this article in press as: N. Elbuluk, et al., Infrared irradiation differentially alt... more Please cite this article in press as: N. Elbuluk, et al., Infrared irradiation differentially alters collagen metabolism in lightly and darkly pigmented human skin in vivo,

PLOS ONE, 2016

Background Vietnam is a lower middle-income country with no national surveillance system for hosp... more Background Vietnam is a lower middle-income country with no national surveillance system for hospitalacquired infections (HAIs). We assessed the prevalence of hospital-acquired infections and antimicrobial use in adult intensive care units (ICUs) across Vietnam. Methods Monthly repeated point prevalence surveys were systematically conducted to assess HAI prevalence and antimicrobial use in 15 adult ICUs across Vietnam. Adults admitted to participating ICUs before 08:00 a.m. on the survey day were included. Results Among 3287 patients enrolled, the HAI prevalence was 29.5% (965/3266 patients, 21 missing). Pneumonia accounted for 79.4% (804/1012) of HAIs Most HAIs (84.5% [855/1012])

2008 Proceedings of 17th International Conference on Computer Communications and Networks, 2008

In this paper we investigate a special type of denial of service (DoS) attack on 802.11-based net... more In this paper we investigate a special type of denial of service (DoS) attack on 802.11-based networks, namely deauthentication/disassociation attack. In the current IEEE 802.11 standards, whenever a wireless station wants to leave the network, it sends a deauthentication or disassociation frame to the access point. These two frames, however, are sent unencrypted and are not authenticated by the access point. Therefore, an attacker can launch a DoS attack by spoofing these messages and thus disabling the communication between these wireless devices and their access point. We propose an efficient solution based on a one way hard function to verify that a deauthentication frame is from a legitimate station. We implement our solution on some 802.11 devices and the experimental results show that our protocol is highly effective against this DoS attack.

2007 IEEE Conference on Emerging Technologies & Factory Automation (EFTA 2007), 2007

There are numerous methods to achieve Web service composition, ranging from semi-automatic to on-... more There are numerous methods to achieve Web service composition, ranging from semi-automatic to on-the-fly automated processes. This paper proposes an approach to semantic Web service composition based on an AI-planning-like algorithm, which proceeds in a depth-first state-space search manner. Features include name matching, semantic similarity computation, cycle detection and optimization. The system gives users the flexibility of altering various parameters

JAMA dermatology, 2014

Solar UV irradiation causes photoaging, characterized by fragmentation and reduced production of ... more Solar UV irradiation causes photoaging, characterized by fragmentation and reduced production of type I collagen fibrils that provide strength to skin. Exposure to UV-B irradiation (280-320 nm) causes these changes by inducing matrix metalloproteinase 1 and suppressing type I collagen synthesis. The role of UV-A irradiation (320-400 nm) in promoting similar molecular alterations is less clear yet important to consider because it is 10 to 100 times more abundant in natural sunlight than UV-B irradiation and penetrates deeper into the dermis than UV-B irradiation. Most (approximately 75%) of solar UV-A irradiation is composed of UV-A1 irradiation (340-400 nm), which is also the primary component of tanning beds. To evaluate the effects of low levels of UV-A1 irradiation, as might be encountered in daily life, on expression of matrix metalloproteinase 1 and type I procollagen (the precursor of type I collagen). In vivo biochemical analyses were conducted after UV-A1 irradiation of norm...

2008 Third International Conference on Communications and Networking in China, 2008

Page 1. A LIGHTWEIGHT SOLUTION FOR WIRELESS LAN: LETTER-ENVELOP PROTOCOL Thuc N. Nguyen Faculty o... more Page 1. A LIGHTWEIGHT SOLUTION FOR WIRELESS LAN: LETTER-ENVELOP PROTOCOL Thuc N. Nguyen Faculty of Information Technology University of Natural Science HCM City, Vietnam ndthuc@fit.hcmuns.edu.vn Bao. ...

2008 Ninth ACIS International Conference on Software Engineering, Artificial Intelligence, Networking, and Parallel/Distributed Computing, 2008

Page 1. Modular Matrix Cipher and Its Application in Authentication Protocol Bao Ngoc TRAN Facult... more Page 1. Modular Matrix Cipher and Its Application in Authentication Protocol Bao Ngoc TRAN Faculty of Mathematics and Informatics HCMC University of Pedagogy, Vietnam baotn@math.hcmup.edu.vn Thuc Dinh NGUYEN ...

Lecture Notes in Computer Science, 2009

Web services have been employed in a wide range of applications and have become a key technology ... more Web services have been employed in a wide range of applications and have become a key technology in developing business operations on the Web. In order to leverage on the use of Web services, Web service discovery and composition need to be fully supported. Several systems have been proposed to meet this need. However, these systems usually support either discovery or composition of Web services but not both. Moreover, these systems assume the Web services are based on the same ontology. Existing Web service discovery systems are not able to discover heterogeneous ontology Web services. This paper introduces a Web service discovery and composition system which supports Web services based on different OWLS ontologies. The discovery process is executed first in order to search for a single Web service that satisfies a requester. If a single Web service cannot be found, multiple Web services are composed to satisfy the request.

JAMA Dermatology, 2014

We thank the C3M imaging core facility (Microscopy and Imaging platform Côte d'Azur [MICA]) for i... more We thank the C3M imaging core facility (Microscopy and Imaging platform Côte d'Azur [MICA]) for immunofluorescent analysis.

2009 International Conference on Computer Technology and Development, 2009

Page 1. A New S-Box Structure to Increase Complexity of Algebraic Expression for Block Cipher Cry... more Page 1. A New S-Box Structure to Increase Complexity of Algebraic Expression for Block Cipher Cryptosystems Bao Ngoc TRAN Faculty of Mathematics and Informatics HCMC University of Pedagogy, Vietnam baotn@math.hcmup.edu.vn ...

2009 International Conference on Computational Intelligence and Security, 2009

Page 1. A New S-Box Structure Based on Graph Isomorphism Bao Ngoc TRAN Faculty of Mathematics and... more Page 1. A New S-Box Structure Based on Graph Isomorphism Bao Ngoc TRAN Faculty of Mathematics and Informatics HCMC University of Pedagogy, Vietnam baotn@math.hcmup.edu.vn Thuc Dinh NGUYEN, Thu Dan TRAN ...

Proceedings of Ascilite, 2006

Audiographics was an established educational technology prior to the development and spread of th... more Audiographics was an established educational technology prior to the development and spread of the World Wide Web (Web) in the early 1990s. First generation audiographics products used bridged telephone lines (audio) and modem linked computers (graphics) to ...

9th IEEE International Conference on Cognitive Informatics (ICCI'10), 2010