- Facility Location and Emergency Management
- Urban Transport and Accessibility
- Fire effects on ecosystems
- Transportation Planning and Optimization
- Computational Geometry and Mesh Generation
- Land Use and Ecosystem Services
- Optimization and Search Problems
- Vehicle Routing Optimization Methods
- Evacuation and Crowd Dynamics
- Urban Green Space and Health
- Transportation and Mobility Innovations
- Spatial and Panel Data Analysis
- Urban and Freight Transport Logistics
- 3D Surveying and Cultural Heritage
- 3D Modeling in Geospatial Applications
- Impact of Light on Environment and Health
- Geographic Information Systems Studies
- Advanced Chemical Physics Studies
- Remote Sensing and LiDAR Applications
- Flood Risk Assessment and Management
- Advanced Manufacturing and Logistics Optimization
- Robotics and Sensor-Based Localization
- Infrastructure Maintenance and Monitoring
- Human Mobility and Location-Based Analysis
- Hydrology and Sediment Transport Processes
University of California, Santa Barbara
2020-2024
Pohang University of Science and Technology
1999
F − (H 2 O) n (n=1–6) clusters have been studied using ab initio calculations. This is an extensive work to search for various low-lying energy conformers, example, including 13 conformers n=6. Our predicted enthalpies and free energies are in good agreement with experimental values. For n=4 6, both internal surface structures almost isoenergetic at 0 K, while favored increasing temperature due the entropic effect. n=5, structure 298 K under 1 atm. These contrasted other small aqua–halide...
Total demand suitably served and facility workload balance are two important considerations in location coverage. Previous work has dealt with balancing issues using a number of approaches, including imposing capacities the use multiple objectives focused on variation. However, is usually restricted to single service unit, inconsistent strategies that allow for increased staffing such as units dealing higher levels demand. This article proposes new bi‐objective optimization model maximizes...
3-D classroom seating information is of great significance in a host planning contexts including indoor navigation and facility management. Mapping seats based on single-view LiDAR scan challenging because occlusions viewpoint limitations. In essence, one left with incomplete point clouds, making object recognition difficult. The aim this paper to acquire complete clouds for objects room scan, focusing particular chairs spaces such as classrooms, lecture halls, theaters, concert venues,...
ABSTRACT Accessibility between fire hydrants and buildings is paramount in emergency response, significantly influencing the efficiency effectiveness of firefighting operations event an incident. However, assessing this relationship within a geographic information system (GIS) framework presents challenges on two fronts. Obtaining path avoiding building parcel obstructions to not trivial. Further, determining furthest extent around exterior from complicated, yet it critically important given...
This paper introduces a bi‐objective strategic location problem to address access and coverage. While previous research in continuous modelling considered coverage independently, none has approached such an integrated fashion. In this paper, new mathematical formulation considering is derived, solution algorithm find the entire set of optimal tradeoff solutions developed. Application findings are reported for several case studies, varying size. The developed approach shown provide critical...
Siting decisions can influence access, logistics, supply chains and transportation other qualities, making them critical to the success of a service system. Often access resources or opportunities is primary concern, but performance characteristics be equally important. This paper considers combined with coverage in site selection as bi-objective spatial optimization model. Specifically, objective aims minimize demand proximity its closest sited facility seeks maximize within distance...
Abstract Spatial optimization involving multiple objectives is commonly needed to address complex planning and management issues yet associated models problems are exceptionally difficult complicated solve. Open‐source approaches have received attention because they offer potential for making spatial more broadly available, other GIScience methods, support analysis decision‐making. Beyond this, the ability integrate functions through open‐source alternatives offers great decrease reliance on...
Embedded devices, constrained by limited memory and processors, require deep learning models to be tailored their specifications. This research explores customized model architectures for classifying drainage crossing images. Building on the foundational ResNet-18, this paper aims maximize prediction accuracy, reduce size, minimize inference latency. Various configurations were systematically probed leveraging hardware-aware neural architecture search, accumulating 1,717 experimental results...
Locating facilities such as directional sensors and lights represents a challenging problem given their anisotropic coverage. This paper proposes spatial optimization model to locate orient simultaneously. A finite dominating set approach considering occlusion is presented reformulate the an integer programming problem. The then solved exactly using branch bound. Applications surveillance camera deployment in university context demonstrate performance of proposed approach. results show...
Districting is essential in establishing efficient, fair, and equitable boundaries across various domains such as trade service provision, land-use development, school attendance, political representation. This paper introduces a robust spatial optimization model tailored to delineate districting strategy that accounts for issues of equinumerosity, compactness, contiguity, among others. The designed ensure an even distribution population districts while ensuring compact contiguous...
Abstract There has been much concern for sustainability issues, recognizing the significant impacts that humans have had and continue to on Earth. Urban informatics offer city systems in terms of understanding, management design, particularly associated with sustainability. Efficiency characterizes sustainable systems, strategic goals achieve them, does not happen by chance, but rather is byproduct concerted efforts driven informed decision making. This paper focuses making, role spatial...
The academic contributions of Waldo Tobler are noteworthy and significant, spanning essentially all disciplines that involve the study geographic phenomena. While much attention has been given to his observations first law geography, there is more substance larger body research. It especially fitting this commemorative special issue appearing in Geographical Analysis as published extensively journal, beginning volume 1969 up 42 2010, making important quantitative theoretical geography. His...
GIScience and spatial information contributions to indoor mapping navigation are many, but there remain significant challenges. Indoor environments where people spend most of their time, socializing, working, learning, exercising, etc. During times emergencies, disease outbreaks, crises, management planning must be prepared handle such events, yet doing so is often hindered by a lack supporting appropriate analytics. This paper focuses on COVID-19 mitigation measures reduce transmission...