Selected publications

Compares conventional asphalt concrete and recycled-plastic-modified mixtures using laboratory and field tests of stiffness, moisture resistance, rutting and fatigue.

Examines associations between animal-welfare labels and food prices using Swiss supermarket data, considering both consumer preferences and production costs.

Evaluates an AHP–TOPSIS framework for rural-road maintenance prioritization using 724 one-kilometer road sections across eight regional bureaus in Thailand. Compared with conventional allocation under the same budget, the study reports 7.4% greater maintenance coverage and lower regional variation in post-maintenance roughness.

A pavement-distress detector informed by an audit of road-survey imagery. LearnableContrast adjusts local contrast, while EdgeSPD uses edge information during downsampling. The study compares five model scales with matched baselines; its findings are reported in an arXiv preprint.

Combines AHP factor weighting with TOPSIS ranking to prioritize road maintenance. Economic, engineering, environmental and social criteria help account for low-volume roads that traffic and roughness measures alone may overlook. The study evaluates the decision-support approach on a Thai rural-road network.

Compares four ways to interpret down-hole seismic measurements at three Thai sites, examining how overburden pressure affects inferred soil velocities.

Studies conformal prediction for quantifying uncertainty in HER2 status classification from breast-cancer immunohistochemistry images.

A VGG-based convolutional model predicts crash severity from Thai highway records for 2011–2023. Categorical features become grayscale images, with class balancing and Bayesian optimisation; evaluation uses F1-score and AUC.

Tests a simpler interpretation of explosion-generated seismic data against MASW at five Thai sites. Accuracy varies with changes in soil layers.

Studies diffusion-based synthetic data augmentation for vehicle detection, using quality-aware reference selection and mAP-guided allocation. Citation and authorship are verified from ACM-deposited metadata; the full text was not accessible in this scan.

A camera-based traffic survey device detects, counts and classifies vehicles into 13 Department of Highways categories. Image processing and machine learning support automated traffic-volume collection.

Statistical association measures and a convolutional deep-learning model examine factors linked to fatalities in Thai highway crash records. The study highlights safety equipment, road-user type and lighting conditions.

Assesses the government funding needed to make three PPP toll-road projects in Bangladesh financially viable, comparing alternative grant schedules with the national budget.

Uses open spatial data and GIS network analysis to assess access to fire-response resources in Bangkok’s Phra Khanong district.

Examines truck overloading in Thailand through bridge weigh-in-motion data and enforcement evidence, linking infrastructure monitoring with transport policy.

A survey of 234 participants at Chulalongkorn University combines factor analysis and logistic regression to examine how safety awareness relates to recommending rental e-scooter services.

This preprint analyses Swedish supermarket products and finds no general price premium for better climate-impact scores after accounting for product characteristics.

Uses questionnaire responses from Bangkok and Sapporo with structural equation modelling to compare factors associated with teenage road-user violations and identify context-specific safety measures.

Conference paper combining YOLO9tr and depth estimation for detecting road damage and analysing its size. Bibliographic details follow IEEE’s Crossref deposit.

Tests GNSS receivers with inertial sensors at different pole tilts and levels of obstruction to evaluate positioning accuracy under NRTK surveying.

Applies GeoSAM to extract building footprints from 5 cm UAV true orthophotos and compares the results with manually delineated outlines at two Chulalongkorn campus areas.

Assesses GNSS rover horizontal positioning accuracy for network-RTK virtual-reference-station surveying, with relevance to cadastral measurements in Thailand.

Evaluates anaerobic fluidised bed reactors containing PVA media over 240 days, varying organic loading and hydraulic retention time without internal recirculation.

Surveys across five Silor routes in Bangkok compare travel patterns and service perceptions among users and non-users. Statistical classification identified four user groups with different needs and expectations.

Examines low-distortion map projections for provincial construction, focusing on balancing projection errors in urban areas.

Evaluates transfer learning with AlexNet and ResNet50 to locate and classify parasite eggs in images from a low-cost USB microscope.

Combines YOLO9tr damage detection with calibrated monocular depth estimation to assess pavement damage using a vehicle-mounted camera. The conference manuscript investigates both damage classification and dimensional measurement, extending the detector toward road-maintenance assessment.

Evaluates a modified field CBR test assembly, comparing test results, variability and operating time with conventional equipment.

A lightweight pavement-damage detector based on YOLOv9 with partial attention. The study evaluates accuracy and inference speed using road images from multiple countries and an expanded set of damage classes. The journal article and its earlier arXiv version are grouped as one work.

Develops FracReconNet to reconstruct fractured proximal femurs in 3D from two radiographic views, using fracture representations and training-data augmentation.

Uses synchrotron-based infrared spectroscopy to characterise organic functional groups in soil samples from King George Island, Antarctica.

Investigates processing and quality assessment for UAV mapping using imagery acquired over the Chulalongkorn UAV test field.

A pavement-strength prediction study relates base materials, repeated axle loads, temperature and season to structural condition. Model outputs are compared with falling-weight deflectometer measurements from actual roads.

Compares onboard RTK, post-processed kinematic and precise-point-positioning workflows for UAV mapping using ground checkpoints.

HDM-4 simulations use Highway 344 data to examine pavement damage and maintenance costs over 20 years for four heavy-truck categories. The analysis supports exploration of maintenance-based truck charges.

Assesses how reference-station geometry and spacing relate to horizontal positioning accuracy across Thailand’s NRTK-VRS network.

Case studies of two urban rail systems and two tollways examine socio-economic benefits and pandemic-related financial risks in Thai public–private partnerships.

In a medical-imaging collaboration, introduces MANet: a U-Net-based network with residual learning and channel and spatial attention for liver-tumour segmentation in CT images.

Structural equation models compare how service quality, passenger confidence and health measures relate to bus-use intentions in Bangkok and Jakarta during the pandemic.

Develops and tests geometric calibration for a five-camera UAV rig using a controlled survey field.

Structural equation modelling examined relationships between human resource practices, knowledge management and the performance of Thai infrastructure contractors. The analysis found positive links between these organisational factors in the firms studied.

Uses questionnaires and interviews to examine factors affecting the outcomes of completed highway bridge construction projects.

Partial least-squares structural equation modelling examines how knowledge management and organisational learning mediate links between human-resource practices and sustainable performance in Thai construction firms.

Uses the Analytic Hierarchy Process to weight economic, engineering and social factors for rural-road maintenance. It relates priorities to the Department of Rural Roads’ strategic objectives, including network connectivity and the needs of low-traffic routes.

Defines design principles and a software-assisted workflow for low-distortion map projections in construction projects, using PROJ parameters.

An online survey of 403 participants in Bangkok and nearby areas was analysed using structural equation modelling. The study examined how technology acceptance and environmental concern relate to battery-electric vehicle purchase intentions and use.

A structural equation model evaluates relationships among human-resource practices, knowledge management and non-financial performance in Thai infrastructure construction firms. Knowledge management is examined as a mediating factor.

Examines polycyclic aromatic hydrocarbons in terrestrial soils across Pakistan and King George Island and assesses their ecological risks. Published online in 2020; journal issue dated 2022.

Combines a Vision Transformer backbone with YOLOX and a feature-pyramid decoder to detect roadside assets in Thai highway images.

Repeated-load tests examined permanent deformation in recycled pavement materials treated with bitumen emulsion and cement. The laboratory results offer guidance for designing recycled pavement rehabilitation materials.

Examines the WGS-TM projection definition used for the Thai–Chinese high-speed railway and the parameters needed for consistent construction surveying.

Uses Monte Carlo simulation and a risk-premium approach to evaluate concession duration and revenue sharing when renewing a PPP toll-road contract.

Presents preliminary calculations for bolted and unbolted tunnel-lining joints, connecting joint flexural capacity with stiffness reduction and segment arrangement.

Examines skid resistance and polishing performance of asphalt mixtures with different proportions of reclaimed asphalt pavement.

Combines a measured bridge influence line with iterative load estimation. Simulations and scaled experiments assess accuracy under road roughness and measurement noise.

Assesses local-road management capacity across 442 local administrative organisations in Thailand. It examines road registration, condition and safety assessment, knowledge use, and maintenance equipment, identifying differences in capacity across types of local authority.

Combines text segmentation with polygon offsets and border information to distinguish nearby and irregularly shaped text in natural images.

A modified fluid analogy model studies how station-area land use affects the balance of rail passenger flows. An MRT Blue Line case study explores mixed-use development as part of integrated transport and land-use planning.

Uses factor and cluster analysis to identify four groups of Silor passengers in Bangkok, linking service preferences to reliability, the in-vehicle environment, comfort and convenience, and environmental impact.

Examines flow behaviour and treatment performance in a fluidised bed reactor, testing nitrate removal and anaerobic treatment of dilute wastewater.

Compares three ways of communicating the same earthquake risk in Chiang Rai. Short time frames influenced risk perception, informing communication for earthquake preparedness.

Uses finite-element analyses to examine how uneven tail-void grout pressure changes tunnel-lining forces and deformation during construction.

Repeated-load triaxial tests investigate the effect of water content on crushed-limestone stiffness. The measured resilient-modulus behaviour informs mechanistic–empirical pavement design.

Laboratory research examines how crumb-rubber size and content affect asphalt deformation resistance when rubber replaces part of the aggregate through dry-process mixing.

Studies detection of the exposed cut ends of eucalyptus logs from images taken behind loaded timber trucks.

Ordered probabilistic models analyse 483 traveller surveys to study bus and informal-transport use in Phnom Penh. Costs, traveller characteristics, comfort and availability help explain differences in usage frequency.

Investigates image-based detection of missing fasteners for railway inspection.

Uses GPS observations to compare ionospheric electron-content variations during solar maximum and minimum at mid-latitude stations.

Two image-processing methods separate touching aggregate particles in asphalt cross-sections. Tests against a reference image found that size-based multiple erosion improved particle detection and size-distribution estimates.

A Green Growth Index combines the economic benefits and environmental performance of highway projects. The paper illustrates the assessment with a hypothetical project and a case study of Kanchanaphisek Road.

Field data from Bangkok’s Sathorn Road were used to model signal timing and reversible-lane operations in Synchro. The study compared proposed timings with observed police-operated signals to assess travel-time changes.

Combines colour, shape and line analysis to identify buildings or visible building parts in street-level images.

Evaluates observation duration and ionospheric conditions when using Department of Lands virtual-reference-station data to establish survey control.

Uses MiSeq sequencing to connect microbial communities with nitrate removal in a fluidized-bed reactor operated without internal recirculation.

Tracks shear-wave velocity in three sandy soils during drained triaxial compression, examining how stress conditions alter correlations with wave speed.

Uses a convolutional neural network to locate Thai text with different orientations in natural-scene images.

Investigates tuned mass dampers as a way to limit earthquake damage in buildings exposed to far-field ground motion.

Compares infrastructure supply and investor demand across ten economic zones using field surveys and interviews, producing readiness assessments for three industrial sectors.

An envelope method and Monte Carlo simulation model delay-risk insurance premiums that change with management responses during construction. Illustrative road and building projects demonstrate the approach.

Investigates Thai ionospheric-map corrections for improving network RTK GPS performance in cadastral surveying.

Conference research on predicting asphalt skid resistance from mixture and aggregate characteristics. The institutional repository verifies the citation; full text is not available there.

A stochastic revenue model and Monte Carlo option-pricing method adjust government guarantee thresholds over time. A BOT highway example explores allocation of revenue risk between government and concessionaire.

Conference work on pavement friction and profile depth for maintenance planning, listed in the coauthor’s university bibliography. Full proceedings text has not been verified.

Presents prototype equipment for assessing mean pavement profile depth to support maintenance planning.

An analytic hierarchy process uses freight-forwarder surveys to compare seven Thai international ports. The indices cover infrastructure, port management, customs procedures and consistency of customs enforcement.

Compares methods for identifying individual mangrove trees and estimating their characteristics from airborne LiDAR, checked against field measurements in Thailand.

Analyses responses from 661 MRT passengers using factor analysis and structural equation modelling. Travel convenience was the strongest factor associated with overall satisfaction, with differences across passenger groups.

Examines how variable-message-sign design relates to motorists’ stated route diversion in Bangkok, using choice models and message-policy experiments.

Combines laboratory and field evidence to estimate small-strain stiffness parameters for Bangkok clay, supporting calibrated geotechnical finite-element models.

Video observations on a Bangkok expressway identify three traffic states near an off-ramp queue. Changes in exit flow and lane changing explain shifts in bottleneck capacity and suggest traffic-responsive ramp control.

Tests a compact treatment process combining coagulation, flocculation, micro-bubble flotation and hydrocyclone separation using natural water from the river Marne.

Investigates semi-automatic faulting algorithms for highway engineering; the institutional bibliography verifies the conference work.

Field deflection measurements and pavement thickness are related to structural capacity to support nondestructive assessment of newly constructed thin asphalt pavements.

Compares oil-droplet tracking and ultrasound measurements with three-dimensional CFD simulations using k-epsilon and Reynolds-stress turbulence models in hydrocyclones.

Applies oblique cumulative traffic plots to examine factors affecting bottleneck capacity on Henry Dunant Road in Bangkok.

Calibrates a finite-element representation of tunnel joints against full-scale segment tests, then examines how joint stiffness and segment count affect bending moments.

Conference research on road construction quality indicators derived from pavement roughness. Listed in the coauthor’s Chulalongkorn University bibliography; full proceedings text has not been verified.

Models pavement patching quantities using road age, traffic and structural characteristics to support maintenance budgeting.

Compares constant and time-varying axle-load estimation in bridge weigh-in-motion simulations, testing sensitivity to speed, roughness and measurement error.

Combines measured train-induced strains with finite-element analysis to evaluate fatigue damage in long-serving Thai railway truss bridges.

Combines borehole profiles from Chiang Mai and Chiang Rai with logistic regression and effective-stress analysis to develop a preliminary liquefaction risk assessment tool.

Studies motorcycle and license-plate detection through fixed-size vertical projection and multi-part mean analysis. Publisher-deposited metadata verifies the conference publication.

Investigates a gravity-inspired image-processing step to separate noise from pavement cracks during segmentation.

Studies enhanced grid-cell analysis for detecting cracks in asphalt-surface images.

Develops a high-speed-camera method that tracks dyed oil droplets to measure water velocities inside conical and cylindrical hydrocyclones.

Investigates traffic warning-sign detection and recognition using fuzzy logic and chain-code analysis. Publisher-deposited metadata verifies the conference publication.

Validates the recovery of moving-vehicle axle loads from bridge bending moments through physical experiments and directly measured axle loads.

Observations at three freeway bottlenecks link rising vehicle density to subsequent capacity drops. A real-time density-estimation algorithm supports investigation of responsive traffic-control strategies.

Introduces an iterative method that separates static and dynamic axle loads in bridge response data, reducing sensitivity to the regularisation parameter in numerical examples.

Field observations and ramp-metering experiments examine how queues and lane changes reduce freeway merge capacity. Adjusting ramp inflow temporarily recovered higher discharge flows at the study site.

Develops a codebook model for separating foreground objects from changing backgrounds in video.

A boundary-element formulation models layered pavement and temperature-related stiffness gradients. Two Florida pavement examples examine how these gradients affect tensile stresses near surface cracks.

Tests hydrocyclones with and without a grit pot for runoff-water pretreatment, comparing solids separation and the volume and concentration of sludge.

Implements a viscoelastic crack-growth law in a boundary-element simulator and evaluates crack propagation in two asphalt mixtures under cyclic indirect tensile loading.

Models an inelastic reinforced-concrete building to evaluate how tuned mass dampers reduce earthquake damage, using damage indices alongside peak displacement.

Investigates variable damping control in a semi-active tuned mass damper, comparing transient and steady-state vibration responses with a passive damper under harmonic excitation.

Compares active mass and active tuned mass dampers with three feedback-control approaches to reduce traffic-induced bridge vibrations through numerical simulations.