Tran Quoc Khanh
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View article: Identifying reliable visible-spectrum reflectance metrics for monitoring cucumber leaf development
Identifying reliable visible-spectrum reflectance metrics for monitoring cucumber leaf development Open
Accurate and continuous monitoring of plant development is crucial for managing closed cultivation systems effectively. Optical reflectance-based sensors offer a non-destructive, scalable, and cost-efficient method to track plant growth, p…
View article: Optimization of Supplemental LED Spectral Quality and Light Dose for Enhancing Biomass and Essential Oil Yield of Ocimum gratissimum L. Under Net House Condition
Optimization of Supplemental LED Spectral Quality and Light Dose for Enhancing Biomass and Essential Oil Yield of Ocimum gratissimum L. Under Net House Condition Open
This study investigated optimal supplemental multispectral light-emitting diode (LED) conditions for the growth and essential oil accumulation of Ocimum gratissimum L. (OG) cultivated in a net house over 15 weeks. We hypothesized that supp…
View article: Incorporating Spectral and Directional Leaf Reflectance into Virtual Plant Models via Phong Shader Parameter Fitting
Incorporating Spectral and Directional Leaf Reflectance into Virtual Plant Models via Phong Shader Parameter Fitting Open
Accurate light simulations using virtual plant models are essential for analyzing how plant structures influence the micro-light climate within canopies. Such simulations are increasingly important in applications including remote sensing,…
View article: Effects of Spectrally Varied Lighting Conditions on Cognitive Performance, User Preference, and Cardiac Effort in Indoor Lighting Environments During Daytime
Effects of Spectrally Varied Lighting Conditions on Cognitive Performance, User Preference, and Cardiac Effort in Indoor Lighting Environments During Daytime Open
The time spent indoors under artificial (electric) lighting has continued to increase and currently amounts to up to 90% of the day. Light is the most important stimulus for the circadian rhythm and has, besides long-term effects, also a d…
View article: Optimization of Supplemental LED Spectral Quality and Light Dose for Enhancing Biomass and Essential Oil Yield of <em>Ocimum gratissimum</em> L. under Net House Condition
Optimization of Supplemental LED Spectral Quality and Light Dose for Enhancing Biomass and Essential Oil Yield of <em>Ocimum gratissimum</em> L. under Net House Condition Open
This study investigated the impact of supplemental multispectral light-emitting diode (LED) lighting at night on the growth and essential oil production of Ocimum gratissimum L. (OG) cultivated in a net house over 15 weeks. Nine lighting t…
View article: The role of HIV-1 Gag and genomic RNA interactions in virion assembly
The role of HIV-1 Gag and genomic RNA interactions in virion assembly Open
The virion assembly represents a critical aspect of producing infectious progenies required for HIV-1 replication. Each step in that process, such as Gag-membrane binding, Gag-genomic RNA binding/packaging, Gag multimerization, and viral p…
View article: Exploring Virtual Space, Reasoning about Place
Exploring Virtual Space, Reasoning about Place Open
View article: Effect of Light Intensity and Light Spectrum of LED Light Sources on Photosynthesis and Secondary Metabolite Synthesis in Ocimum basilicum
Effect of Light Intensity and Light Spectrum of LED Light Sources on Photosynthesis and Secondary Metabolite Synthesis in Ocimum basilicum Open
Basil is best known as an aromatic and medicinal herb due to its rich profile of bioactive compounds. While secondary metabolite production, coupled with growth, has been well studied, photosynthesis has often been overlooked in this regar…
View article: Analyzing Gaze During Driving: Should Eye Tracking Be Used to Design Automotive Lighting Functions?
Analyzing Gaze During Driving: Should Eye Tracking Be Used to Design Automotive Lighting Functions? Open
In this work, an experiment was designed in which a defined route consisting of country roads, highways, and urban roads was driven by 20 subjects during the day and at night. The test vehicle was equipped with GPS and a camera, and the su…
View article: Colour discrimination evaluation under multiple light sources using signal detection theory
Colour discrimination evaluation under multiple light sources using signal detection theory Open
Colour discrimination is a crucial research topic in lighting quality studies. Till now, various experimental methods have been widely adopted. Those methods based on the traditional colour-discrimination framework primarily focused on obs…
View article: Recent consumer OLED monitors can be suitable for vision science
Recent consumer OLED monitors can be suitable for vision science Open
Vision science imposes rigorous requirements for the design and execution of psychophysical studies and experiments. These requirements ensure precise control over variables, accurate measurement of perceptual responses, and reproducibilit…
View article: Multi-Person Localization Based on a Thermopile Array Sensor with Machine Learning and a Generative Data Model
Multi-Person Localization Based on a Thermopile Array Sensor with Machine Learning and a Generative Data Model Open
Thermopile sensor arrays provide a sufficient counterbalance between person detection and localization while preserving privacy through low resolution. The latter is especially important in the context of smart building automation applicat…
View article: Long-Term Analysis of Temperature and Current-Dependent Degradation in Green High-Power Light-Emitting Diodes
Long-Term Analysis of Temperature and Current-Dependent Degradation in Green High-Power Light-Emitting Diodes Open
We report on the degradation dynamics and mechanisms of commercially available green high-power light-emitting diodes (LEDs) with a peak wavelength of 522 nm. The stress tests were carried out for up to 8800 hours with forward currents ran…
View article: Innovation in Product Development: Leveraging Disruptive Technologies for Competitive Advantage
Innovation in Product Development: Leveraging Disruptive Technologies for Competitive Advantage Open
View article: Modeling Spectral LED Degradation Using an Unsupervised Machine Learning Approach
Modeling Spectral LED Degradation Using an Unsupervised Machine Learning Approach Open
The modeling of spectral characteristics of light-emitting diodes (LED) has been addressed in various studies. We extend the current state of knowledge by modeling the spectral characteristics of commercially available high-power LEDs, exh…
View article: A Study on Pendant and Blackboard Asymmetric Lens LED Luminaires for Optimal Illumination in Classrooms
A Study on Pendant and Blackboard Asymmetric Lens LED Luminaires for Optimal Illumination in Classrooms Open
This study examines the transformative impact of integrating pendant asymmetric lens (PAL) and blackboard asymmetric lens (BAL) LED luminaires to enhance classroom lighting, with the goals of replicating the ambient effects of natural dayl…
View article: Exploring Asymmetric Lens–Total Internal Reflection (AL–TIR) Optics for Uniform Ceiling Illumination in Interior Lighting
Exploring Asymmetric Lens–Total Internal Reflection (AL–TIR) Optics for Uniform Ceiling Illumination in Interior Lighting Open
This study presents a significant advancement in LED interior lighting through the development and application of Asymmetric Lens–Total Internal Reflection (AL–TIR) optics, with a focus on enhancing lighting uniformity and indoor comfort b…
View article: Recent consumer OLED monitors can be suitable for vision science
Recent consumer OLED monitors can be suitable for vision science Open
Vision science imposes rigorous requirements for the design and execution of psychophysical studies and experiments. These requirements ensure precise control over variables, accurate measurement of perceptual responses, and reproducibilit…
View article: Temperature Behavior in Headlights: A Comparative Analysis between Battery Electric Vehicles and Internal Combustion Engine Vehicles
Temperature Behavior in Headlights: A Comparative Analysis between Battery Electric Vehicles and Internal Combustion Engine Vehicles Open
In the context of a global shift towards renewable energies and climate change mitigation, the market for electric vehicles has experienced a remarkable upswing, with battery electric vehicles (BEVs) leading this transformative wave. The a…
View article: An Analysis of Visibility Requirements and Reaction Times of Near-Field Projections
An Analysis of Visibility Requirements and Reaction Times of Near-Field Projections Open
Successful communication between highly automated vehicles and vulnerable road users will be crucial in the future. In addition to the technical requirements of the communication system, the projected content is also essential to ensure su…
View article: Sex Similarities and Differences in Human Colour Discrimination
Sex Similarities and Differences in Human Colour Discrimination Open
View article: LED Degradation Monitoring Using a Multi-Channel Spectral Sensor
LED Degradation Monitoring Using a Multi-Channel Spectral Sensor Open
This study explores a novel approach to monitor the spectral emission of LEDs by estimating the spectral power distribution from the spectral sensor responses during an accelerated aging experiment. Two methods for reconstructing the actua…
View article: Forming a Military Culture for Learners at the VNU National Defense and Security Training Center
Forming a Military Culture for Learners at the VNU National Defense and Security Training Center Open
Constructing a noble and healthy culture, a fundamental basis of the socio-political spirit, and the driving force of national development is one of the top priorities of our Party. Given the unique nature of defense activities and the tas…
View article: Evidence for human-centric in-vehicle lighting: part 3—Illumination preferences based on subjective ratings, eye-tracking behavior, and EEG features
Evidence for human-centric in-vehicle lighting: part 3—Illumination preferences based on subjective ratings, eye-tracking behavior, and EEG features Open
Within this third part of our mini-series, searching for the best and worst automotive in-vehicle lighting settings, we aim to extend our previous finding about white light illumination preferences by adding local cortical area activity as…
View article: Numerical correlation between non-visual metrics and brightness metrics—implications for the evaluation of indoor white lighting systems in the photopic range
Numerical correlation between non-visual metrics and brightness metrics—implications for the evaluation of indoor white lighting systems in the photopic range Open
View article: Brightness perception under photopic conditions: experiments and modeling with contributions of S-cone and ipRGC
Brightness perception under photopic conditions: experiments and modeling with contributions of S-cone and ipRGC Open
View article: A Novel Way of Optimizing Headlight Distributions Based on Real Life Traffic and Eye Tracking Data Part 1: Idealized Baseline Distribution
A Novel Way of Optimizing Headlight Distributions Based on Real Life Traffic and Eye Tracking Data Part 1: Idealized Baseline Distribution Open
In order to find optimized headlight distributions based on real traffic data, a three-step approach is chosen. Since the complete investigations are too extensive to fit into a single publication, this paper is the first in a series of th…
View article: A Novel Way of Optimizing Headlight Distributions Based on Real-Life Traffic and Eye Tracking Data Part 3: Driver Gaze Behaviour on Real Roads and Optimized Light Distribution
A Novel Way of Optimizing Headlight Distributions Based on Real-Life Traffic and Eye Tracking Data Part 3: Driver Gaze Behaviour on Real Roads and Optimized Light Distribution Open
In order to find optimized headlight distributions based on real traffic data, a three-step approach has been chosen. The complete investigations are too extensive to fit into a single paper; this paper is the last of a three part series. …
View article: A Novel Way of Optimizing Headlight Distributions Based on Real-Life Traffic and Eye-Tracking Data Part 2: Analysis of Real-World Traffic Environments Data in Germany
A Novel Way of Optimizing Headlight Distributions Based on Real-Life Traffic and Eye-Tracking Data Part 2: Analysis of Real-World Traffic Environments Data in Germany Open
In order to find optimized headlight distributions based on real traffic data, a three-step approach has been chosen. Since the complete investigations are too extensive to fit into one single publication, this paper is the second of three…
View article: Numerical Relationship Between Non‐visual Metrics and Brightness Metrics – Consequences for the Evaluation of <scp>HCL</scp> Systems and Facilities
Numerical Relationship Between Non‐visual Metrics and Brightness Metrics – Consequences for the Evaluation of <span>HCL</span> Systems and Facilities Open
Since 2005, intensive research activities and discussions have taken place to explore and work out the mechanisms of how the receptor signals can be combined to give rise to the non-visual effects of light. Parallel to the dynamic and inte…