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272 Results Found

  • Article
  • Open Access
5 Citations
3,780 Views
19 Pages

Transport has long been considered a concern for rural residents around the world. Rural express logistics, one of the transport topics, is associated with rural residents’ convenience as well as e-commerce development. As key nodes in the netw...

  • Article
  • Open Access
14 Citations
5,787 Views
18 Pages

With the rapid development of urbanization, fire risk factors have increased greatly, indicating a higher requirement for urban firefighting security. Fire rescue capabilities can be effectively improved by the scientific layout of fire stations, and...

  • Article
  • Open Access
15 Citations
4,620 Views
23 Pages

9 August 2021

Most people will store smartphone waste or give it to others; this is due to inadequate waste collection facilities in all cities/regencies in Indonesia. In Yogyakarta Province, there is no electronic waste collection facility. Therefore, an e-waste...

  • Feature Paper
  • Article
  • Open Access
34 Citations
6,346 Views
23 Pages

13 October 2020

This paper presents an extension of the covering location problem as a hybrid covering model that utilizes the set covering and maximal covering location problems. The developed model is a multi-period model that considers strategic and tactical plan...

  • Article
  • Open Access
16 Citations
4,714 Views
32 Pages

The wave overtopping flow can exert high hydraulic loads on the grass cover of dikes leading to failure of the cover layer on the crest and the landward slope. Hydraulic variables such as the near bed velocity, pressure, shear stress and normal stres...

  • Article
  • Open Access
5 Citations
1,943 Views
18 Pages

A Comprehensive Model Assessment of China’s Forestry and Climate Change

  • Ying Zhang,
  • Bright Obuobi,
  • Delight Hwarari and
  • Zhiguang Zhang

16 July 2023

The relationship between maximizing forest revenue and reducing environmental pollution has been a challenging one. It is every country’s responsibility to protect its forest reserves and mitigate climate change. Studies on the relationship bet...

  • Article
  • Open Access
1 Citations
2,648 Views
16 Pages

4 November 2024

Urban greenways, as vital green infrastructures, offer a range of societal, environmental, and ecological benefits to city dwellers. However, planning their routes remains a complex task for urban planners. While most studies emphasize either maximiz...

  • Article
  • Open Access
3 Citations
3,036 Views
20 Pages

26 August 2022

The traditional covering problem has two assumptions: “all or nothing coverage” and “individual coverage”. There are settings where the two assumptions may be unrealistic. In this research, we relax the two assumptions and stu...

  • Article
  • Open Access
2 Citations
4,270 Views
31 Pages

10 March 2025

Design standards for manual handling equipment tend to measure maximal loads and moving forces using a smooth, flat, horizontal steel plate; yet, in everyday use, such equipment is used on floor coverings. Such test methods therefore overestimate the...

  • Article
  • Open Access
25 Citations
4,345 Views
19 Pages

4 July 2023

A fuzzy graph G is stated to have a set of trees as its tree cover if all the vertices of G are in their union. The maximum weight tree in the tree cover is assumed to be the cost of a tree cover for a fuzzy graph. For an integer β>0, finding...

  • Article
  • Open Access
3 Citations
3,915 Views
14 Pages

A Dynamic Model of Profit Maximization for Carsharing Services: Astana, Republic of Kazakhstan

  • Beibut Amirgaliyev,
  • Oleksandr Kuchanskyi,
  • Yurii Andrashko and
  • Didar Yedilkhan

This study considers building a dynamic model of profit maximization for a carsharing system and its verification based on the case of implementing such a system in Astana, Republic of Kazakhstan. The region, bounded by the administrative boundaries...

  • Article
  • Open Access
1,782 Views
11 Pages

An Extended Heuristic Algorithm to Settle Reacting Objects on a Planar Surface

  • Gorkem Tokatli,
  • Pinar Dundar,
  • Moharram Challenger and
  • Tufan Turaci

1 April 2011

Graph theory is a key subject for both mathematics and computer science. It is used for modelling many problems such as maximal independent set, minimum covering and matching. In our study, we have extended the previous work on placing materials that...

  • Article
  • Open Access
25 Citations
5,674 Views
12 Pages

On the Coverage of Bus-Based Mobile Sensing

  • Pedro Henrique Cruz Caminha,
  • Rodrigo De Souza Couto,
  • Luís Henrique Maciel Kosmalski Costa,
  • Anne Fladenmuller and
  • Marcelo Dias de Amorim

20 June 2018

A cost-effective approach to gather information in a smart city is to embed sensors in vehicles such as buses. To understand the limitations and opportunities of this model, it is fundamental to investigate the spatial coverage of such a network, esp...

  • Article
  • Open Access
34 Citations
4,743 Views
20 Pages

Area Coverage Maximization under Connectivity Constraint in Wireless Sensor Networks

  • Frantz Tossa,
  • Wahabou Abdou,
  • Keivan Ansari,
  • Eugène C. Ezin and
  • Pierre Gouton

22 February 2022

Wireless sensor networks (WSNs) have several important applications, both in research and domestic use. Generally, their main role is to collect and transmit data from an ROI (region of interest) to a base station for processing and analysis. Therefo...

  • Article
  • Open Access
26 Citations
4,845 Views
16 Pages

Land Use Demands for the CLUE-S Spatiotemporal Model in an Agroforestry Perspective

  • Georgios Mamanis,
  • Michael Vrahnakis,
  • Dimitrios Chouvardas,
  • Stamatia Nasiakou and
  • Vassiliki Kleftoyanni

16 October 2021

Rural landscape evolution models are used as tools for the analysis of the causes and impact of land use changes on landscapes. The CLUE-S (the Conversion of Land Use and its Effects at Small regional extent) model was developed to simulate the chang...

  • Article
  • Open Access
3 Citations
1,773 Views
21 Pages

Optimizing Connectivity and Coverage for Millimeter-Wave-Based Networks

  • Pablo Adasme,
  • Ali Dehghan Firoozabadi and
  • Sergio Cordero

19 January 2024

In this article, the problem of achieving the minimum backbone connectivity cost while simultaneously maximizing user coverage for 5G millimeter-wave (mmWave)-based networks is considered. Let G=(N,E) be an input graph instance with a set of nodes N...

  • Article
  • Open Access
4 Citations
2,388 Views
17 Pages

21 October 2021

Diversified top-k weight clique (DTKWC) search problem is an important generalization of the diversified top-k clique (DTKC) search problem with practical applications. The diversified top-k weight clique search problem aims to search k maximal cliqu...

  • Article
  • Open Access
228 Citations
16,503 Views
17 Pages

Seasonal Variations of the Surface Urban Heat Island in a Semi-Arid City

  • Sirous Haashemi,
  • Qihao Weng,
  • Ali Darvishi and
  • Seyed Kazem Alavipanah

21 April 2016

The process of the surface urban heat island (SUHI) varies with latitude, climate, topography and meteorological conditions. This study investigated the seasonal variability of SUHI in the Tehran metropolitan area, Iran, with respect to selected surf...

  • Article
  • Open Access
4 Citations
2,552 Views
17 Pages

On the Existence of Solutions of a Two-Layer Green Roof Mathematical Model

  • J. Ignacio Tello,
  • Lourdes Tello and
  • María Luisa Vilar

18 September 2020

The aim of this article is to fill part of the existing gap between the mathematical modeling of a green roof and its computational treatment, focusing on the mathematical analysis. We first introduce a two-dimensional mathematical model of the therm...

  • Article
  • Open Access
74 Citations
11,542 Views
20 Pages

5 December 2012

Maximal light use efficiency (LUE) is an important ecological index of a vegetation essential attribute, and a key parameter of the LUE-based model for estimating large-scale vegetation productivity by remote sensing technology. However, although cur...

  • Article
  • Open Access
14 Citations
4,719 Views
20 Pages

Spatio-Temporal Super-Resolution Land Cover Mapping Based on Fuzzy C-Means Clustering

  • Xiaohong Yang,
  • Zhong Xie,
  • Feng Ling,
  • Xiaodong Li,
  • Yihang Zhang and
  • Ming Zhong

2 August 2018

Super-resolution land cover mapping (SRM) is a method that aims to generate land cover maps with fine spatial resolutions from the original coarse spatial resolution remotely sensed image. The accuracy of the resultant land cover map produced by exis...

  • Article
  • Open Access
22 Citations
5,506 Views
22 Pages

4 January 2021

The paper aims to study a multi-period maximal covering location problem with the configuration of different types of facilities, as an extension of the classical maximal covering location problem (MCLP). The proposed model can have applications such...

  • Article
  • Open Access
33 Citations
4,735 Views
31 Pages

28 December 2022

Land cover (LC) maps are crucial to environmental modeling and define sustainable management and planning policies. The development of a land cover mapping continuous service according to the new EAGLE legend criteria has become of great interest to...

  • Article
  • Open Access
1,087 Views
23 Pages

15 March 2024

The present paper considers a fractional-order smoke epidemic model. We apply fuzzy systems and probability theory to make the best decision on the stability of the smoking epidemic model by using a new class of controllers powered by special functio...

  • Article
  • Open Access
1 Citations
1,108 Views
19 Pages

17 October 2024

The construction costs and operational challenges of rural microgrids have garnered widespread attention. This study focuses on grid-connected rural microgrids incorporating wind, solar, hydro, and storage systems, and proposes a two-tier optimizatio...

  • Feature Paper
  • Article
  • Open Access
315 Views
22 Pages

Integration of Discriminant Analysis and Probabilistic Neural Networks to Classify Yield Levels Based on Soil Chemical Properties in Cover Crop Rotation Systems

  • Carolina dos Santos Batista Bonini,
  • Borja Velázquez-Martí,
  • Pâmela Gomes Nakada-Freitas,
  • Alfredo Bonini,
  • Melissa Alexandre Santos and
  • Ana Clara Tomasseti

This study investigates how cover crop management and soil tillage influence the development and yield of cucumber and cabbage crops. Three cover crop treatments—blue lupin, black oats, and their mixture—were evaluated during the autumn/w...

  • Article
  • Open Access
3 Citations
4,960 Views
13 Pages

Optimizing the Spatial Location of Street Lights in Belle Isle, Michigan

  • Yanqing Xu,
  • Yue Zhang,
  • Cong Fu,
  • Xiyue Deng and
  • Yihe Yang

Improved street lighting can provide better use of public space and helps to promote safety while driving or walking. In terms of balancing benefits and impacts, on the basis of cost saving, this research adopts two prominent mathematical models, the...

  • Article
  • Open Access
1,638 Views
10 Pages

27 June 2023

We investigate the classical optimal investment problem of the Merton model in a discrete time with market friction due to loss of wealth in trading. We consider the case of a finite number of investors, with the friction for each investor represente...

  • Article
  • Open Access
11 Citations
4,881 Views
17 Pages

The proliferation of shared electric scooters (E-scooters) has brought convenience to urban transportation but has also introduced challenges such as disorderly parking and an imbalance between supply and demand. Given the current inconsistent quanti...

  • Article
  • Open Access
2 Citations
2,635 Views
10 Pages

Characterization of Running Intensity in Canadian Football Based on Tactical Position

  • Abdullah Zafar,
  • Samuel Guay,
  • Sophie-Andrée Vinet,
  • Amélie Apinis-Deshaies,
  • Raphaëlle Creniault,
  • Géraldine Martens,
  • François Prince and
  • Louis De Beaumont

21 April 2024

This study aimed to use a data-driven approach to identify individualized speed thresholds to characterize running demands and athlete workload during games and practices in skill and linemen football players. Data were recorded from wearable sensors...

  • Article
  • Open Access
7 Citations
2,604 Views
12 Pages

The equitable allocation of COVID-19 vaccines is a critical challenge worldwide, given that the pandemic has been disproportionally affecting economically disadvantaged racial and ethnic groups. In the United States, the ongoing implementation effort...

  • Article
  • Open Access
24 Citations
8,098 Views
29 Pages

14 July 2015

We use the hybrid modeling laboratory of the Mediterranean Landscape Dynamics (MedLanD) Project to simulate barranco incision in eastern Spain under different scenarios of natural and human environmental change. We carry out a series of modeling expe...

  • Article
  • Open Access
1 Citations
3,628 Views
11 Pages

Due to the complex features of metabolomics data, the development of a unified platform, which covers preprocessing steps to data analysis, has been in high demand over the last few decades. Thus, we developed a new bioinformatics tool that includes...

  • Article
  • Open Access
8 Citations
4,499 Views
24 Pages

Development of a Novel Freight Railcar Load Planning and Monitoring System

  • Snežana Mladenović,
  • Stefan Zdravković,
  • Slavko Vesković,
  • Slađana Janković,
  • Života Đorđević and
  • Nataša Đalić

4 June 2019

Rail transport has unmistakable sustainable (environmental and economic) advantages in goods transportation on a massive scale. Goods loading constitutes an important segment of goods transportation by rail. Incorrect loading can be a serious threat...

  • Article
  • Open Access
15 Citations
4,227 Views
15 Pages

21 May 2019

Research Highlights: The impact of variation in fuels and fuel dynamics among forest cover types on the outcome of fuel treatments is poorly understood. This study investigated the potential effects of treatment placement with respect to cover type o...

  • Feature Paper
  • Article
  • Open Access
1 Citations
1,423 Views
16 Pages

Planning Sustainable Green Blue Infrastructure in Colombo to Optimize Park Cool Island Intensity

  • A. A. S. G. Wijesundara,
  • B. G. N. Sewwandi and
  • Thomas Panagopoulos

30 October 2025

Colombo, a rapidly urbanizing city, increasingly faces the Urban Heat Island (UHI) effect due to urban expansion and climate change. Urban parks mitigate UHI by creating cool microclimates, quantified as Park Cool Island Intensity (PCII), the tempera...

  • Article
  • Open Access
1,963 Views
18 Pages

8 March 2025

Understanding how climate policies impact forest carbon sequestration is crucial for optimizing mitigation strategies. This study evaluated forest carbon sequestration in China from 2020 to 2060 under three climate scenarios: SSP1-2.6 (high mitigatio...

  • Article
  • Open Access
1,656 Views
28 Pages

27 May 2025

The pre-training and fine-tuning paradigm has significantly advanced satellite remote sensing applications. However, its potential remains largely underexplored for airborne laser scanning (ALS), a key technology in domains such as forest management...

  • Feature Paper
  • Article
  • Open Access
4 Citations
5,839 Views
18 Pages

25 May 2018

This paper discusses the physical nature and the numerical modeling of a novel approach of periodic structures for applications as photonic sensors. The sensing is based on the high sensitivity to the cover index change of the notch wavelength. This...

  • Article
  • Open Access
6 Citations
3,418 Views
24 Pages

Can Plot-Level Photographs Accurately Estimate Tundra Vegetation Cover in Northern Alaska?

  • Hana L. Sellers,
  • Sergio A. Vargas Zesati,
  • Sarah C. Elmendorf,
  • Alexandra Locher,
  • Steven F. Oberbauer,
  • Craig E. Tweedie,
  • Chandi Witharana and
  • Robert D. Hollister

8 April 2023

Plot-level photography is an attractive time-saving alternative to field measurements for vegetation monitoring. However, widespread adoption of this technique relies on efficient workflows for post-processing images and the accuracy of the resulting...

  • Article
  • Open Access
6 Citations
4,549 Views
19 Pages

Optimizing Police Facility Locations Based on Cluster Analysis and the Maximal Covering Location Problem

  • Bruno Ferreira da Costa Borba,
  • Ana Paula Henriques de Gusmão,
  • Thárcylla Rebecca Negreiros Clemente and
  • Thyago Celso Cavalcante Nepomuceno

Planning and defining places for the installation of police facilities are fundamental to improving the public security service in the urban space. Geographic Information Systems connecting the spatial distribution of police occurrences, budgetary re...

  • Article
  • Open Access
5 Citations
1,936 Views
14 Pages

Research on Optimization Technology of Cross-Regional Synergistic Deployment of Fire Stations Based on Fire Risk

  • Kai Guo,
  • Wei Wang,
  • Shixiang Tian,
  • Juntao Yang,
  • Zebiao Jiang and
  • Zhangyin Dai

25 November 2022

Regional planning and development of urban agglomerations such as the Beijing-Tianjin-Hebei Region, the Yangtze River Delta, the Guangdong-Hong Kong-Macao Greater Bay Area and the Chengdu-Chongqing Twin Cities provide a good opportunity for fire resc...

  • Article
  • Open Access
55 Citations
7,745 Views
21 Pages

28 April 2014

In this paper, two mixture models are proposed for modeling heterogeneous regions in single-look and multi-look polarimetric SAR images, along with their corresponding maximum likelihood classifiers for land cover classification. The classical Gaussi...

  • Article
  • Open Access
618 Views
27 Pages

1 August 2025

Rough sets and fuzzy sets are two complementary approaches for modeling uncertainty and imprecision. Their integration enables a more comprehensive representation of complex, uncertain systems. However, existing rough fuzzy sets models lack the expre...

  • Article
  • Open Access
32 Citations
5,207 Views
17 Pages

Simulation of Radiation and Crop Activity in a Greenhouse Covered with Semitransparent Organic Photovoltaics

  • Catherine Baxevanou,
  • Dimitrios Fidaros,
  • Nikolaos Katsoulas,
  • Evangelos Mekeridis,
  • Chrisostomos Varlamis,
  • Alexandros Zachariadis and
  • Stergios Logothetidis

8 April 2020

A solution to the problem of reduction of available photosynthetically active radiation (PAR) due to the cover with conventional opaque photovoltaics (PV) of greenhouses is the use of semitransparent PV. The question is how dense the semitransparent...

  • Technical Note
  • Open Access
5 Citations
2,780 Views
17 Pages

10 December 2020

An experimental longwave system operating in the broadcasting spectrum with horizontal magnetic loop transmitting antennas is presented as an element of simulated lunar astronaut mission of the IGLUNA program of Swiss Space Center (ESA_Lab demonstrat...

  • Article
  • Open Access
7 Citations
6,790 Views
33 Pages

A Joint Land Cover Mapping and Image Registration Algorithm Based on a Markov Random Field Model

  • Teerasit Kasetkasem,
  • Preesan Rakwatin,
  • Ratchawit Sirisommai and
  • Apisit Eiumnoh

15 October 2013

Traditionally, image registration of multi-modal and multi-temporal images is performed satisfactorily before land cover mapping. However, since multi-modal and multi-temporal images are likely to be obtained from different satellite platforms and/or...

  • Article
  • Open Access
19 Citations
7,703 Views
20 Pages

9 December 2021

Sentinel-2 satellites have become one of the main resources for Earth observation images because they are free of charge, have a great spatial coverage and high temporal revisit. Sentinel-2 senses the same location providing different spatial resolut...

  • Article
  • Open Access
1,066 Views
27 Pages

13 October 2025

Suboptimal placement of charging infrastructure is a major barrier to the transition to sustainable transportation, even with the growing popularity of electric vehicles (EVs). The research addresses this challenge by proposing a novel hybrid genetic...

  • Article
  • Open Access
6 Citations
3,062 Views
14 Pages

23 September 2019

Coverage and network lifetime are two fundamental research issues in visual sensor networks. In some surveillance scenarios, there are some critical locations that demand to be monitored within a designated period. However, with limited sensor nodes...

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