Article
Green & Sustainable Science & Technology
Pankaj Bajracharya, Selima Sultana
Summary: By utilizing a support vector machine (SVM)-based urban growth simulation model, this study identified potential areas for urban expansion in Chattogram in the next twenty years, aiding in the delineation of the urban growth boundary (UGB) for the region.
Article
Environmental Studies
Ashique Vadakkuveettil, Aakriti Grover
Summary: The unbalanced shift in land use and cover patterns due to urban growth increases land surface temperature and leads to the emergence of surface urban heat islands. This study examines the impact of evolving land use and cover patterns on land surface temperature and their correlation with vegetation index and building index. The results show a significant decrease in vegetated areas and an increase in built-up areas, with a corresponding rise in land surface temperature. It is crucial for urban planners and policymakers to address these imbalances and implement sustainable development measures, such as urban greening, to control the rising land surface temperature.
Article
Green & Sustainable Science & Technology
Peiheng Yu, Esther H. K. Yung, Edwin H. W. Chan, Man Sing Wong, Siqiang Wang, Yiyun Chen
Summary: This study proposes an integrated framework for examining urban fragmentation in dynamic and complex metropolitan areas, using the Wuhan metropolitan area as a case study. It identifies various forms of urban fragmentation and their causes, including morphological, connectional, and functional fragmentation. The study also highlights the importance of natural, socio-economic, and construction factors in driving urban fragmentation. These findings have implications for sustainable urban development and planning.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Environmental Sciences
Shihui Yuan, Zhigang Ren, Xiaofang Shan, Qinli Deng, Zeng Zhou
Summary: Urban sprawl intensifies the urban heat island effect by reducing vegetation cover and increasing impervious surfaces. This study analyzed the spatiotemporal evolution of urban heat islands and identified differences between winter and summer. The Land Use Contribution Index introduced a new approach to understanding the relationship between land cover and heat islands. Results showed that urbanization led to an increase in the area of heat islands in both winter and summer, but the intensity varied among different land types and seasons.
Article
Environmental Sciences
Alice Cavalli, Saverio Francini, Ronald E. McRoberts, Valentina Falanga, Luca Congedo, Paolo De Fioravante, Mauro Maesano, Michele Munafo, Gherardo Chirici, Giuseppe Scarascia Mugnozza
Summary: In this study, remotely sensed data and Landsat time series were used to predict afforestation areas in Italy between 1985 and 2019. The results showed that the total afforestation area was 2.8 +/- 0.2 million ha, with a potential C-sequestration of 200 million t. Sardinia had the largest afforested area among all administrative regions, while Valle d'Aosta had the smallest area. The elevation class between 400 and 600 m above sea level had the greatest afforestation area.
Article
Environmental Sciences
George Xian, Hua Shi, Qiang Zhou, Roger Auch, Kevin Gallo, Zhuoting Wu, Michael Kolian
Summary: Urban development and associated land cover and land use change alter the thermal, hydrological, and physical properties of the land surface. This study developed a novel approach to characterize landscape thermal conditions, quantifying the urban heat island (UHI) intensity and its spatiotemporal variation using time series of Landsat data. The results showed that UHI intensities had averages of 3.4 degrees C and 3.3 degrees C in the Atlanta and Minneapolis metropolitan areas, respectively. The dominant land cover type in rural areas and urban imperviousness cover determines the UHI intensity. The findings highlight the importance of urban land cover dynamics in controlling UHI and the UHI hotspots.
REMOTE SENSING OF ENVIRONMENT
(2022)
Article
Environmental Sciences
Pariwate Varnakovida, Htet Yamin Ko Ko
Summary: The study focuses on the changes in land use, land surface temperature, urban heat island, urban density, and urbanization rate in the Bangkok Metropolitan Area during the development of the Eastern Economic Corridor project. The analysis shows that the increase in urban areas has led to a rise in land surface temperature, and the urban development has affected the land cover structure and urban density.
Article
Ecology
Gerardo A. Carrillo-Niquete, Jose Luis Andrade, Jose Rene Valdez-Lazalde, Casandra Reyes-Garcia, Jose Luis Hernandez-Stefanoni
Summary: With the rapid population growth, Me ' rida city has become an attractive city for real-estate investment in southeast Mexico. However, this has led to deforestation and the formation of heat islands. By using Landsat images and the BFAST algorithm, this study analyzed the deforestation trends and identified the occurrence of heat islands in the city. The findings demonstrate the effectiveness of Landsat images as tools for detecting deforestation and estimating land surface temperature.
LANDSCAPE AND URBAN PLANNING
(2022)
Article
Engineering, Multidisciplinary
Ali Alqahtany
Summary: The Al Ahsa Metropolitan Area (AMA) in Saudi Arabia has experienced rapid population growth and urban expansion due to the discovery of oil. This growth has led to various challenges in social, economic, and environmental aspects, which require study and assessment to find solutions for improvement. The study examines the historical growth of AMA using Geographic Information System data and satellite image classification techniques. The findings show a significant increase in the urban area of AMA over the past 30 years, with a predicted further increase in the next decade and a decline in vegetation coverage.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Environmental Studies
Anasua Chakraborty, Hichem Omrani, Jacques Teller
Summary: This research aims to uncover the various factors that can impact urban densification by studying multi-level built-up densities. It utilizes vector-based cadastral data to better track densification and examines the situation of Brussels, a metropolitan area spread across three regions with different land-planning policies.
Article
Environmental Sciences
Matthew Nigel Lawton, Belen Marti-Cardona, Alex Hagen-Zanker
Summary: This paper presents a method for identifying urban land cover changes using pixel-based time series analysis, particularly focusing on breaks in NDVI trends. The research shows that the method performs well in areas with large differences in NDVI dynamics among land cover types, but less so in areas where changes in land cover within pixels are minimal. Future improvements include incorporating spectral information other than NDVI and considering multiple change events per pixel over time.
Article
Engineering, Aerospace
Jayatra Mandal, Priyank Pravin Patel, Sourav Samanta
Summary: This study examined the Urban Heat Island (UHI) phenomena in the Kolkata Metropolitan Area (KMA) and its surrounding rural areas over the past two decades using MODIS satellite data. The findings showed that the land surface temperature (LST) in the KMA increased at a rate 2.5 times higher than its surroundings. The pre-monsoon period had the highest average LST, while the city center and its buffer area experienced stressful health conditions due to the UHI effect. The study emphasized the need for practices such as water roofs, green roofs, and tree planting to mitigate the UHI effect and promote eco-friendly and sustainable urban development in the region.
ADVANCES IN SPACE RESEARCH
(2022)
Article
Green & Sustainable Science & Technology
Anwarul Islam Chowdhury, Md. Jamal Uddin, Tarit Kumar Baul, Jarin Akhter, Rajasree Nandi, Shyamal Karmakar, Tapan Kumar Nath
Summary: Urban trees have the capacity to reduce atmospheric particulate matters (PM) concentration through deposition on leaves. This study in Chattogram City Corporation (CCC), Bangladesh aimed to quantify ambient atmospheric PM, quantify PM deposition by urban trees, and explore the variation of PM with different tree species, height, leaf traits, and seasons. The results showed that the PM concentration was highest at roadsides with the lowest relative greenspace, while it was lowest in residential and park areas with higher relative greenspace. Psidium guajava had the highest PM deposition among the tree species examined. Trees with oblong and ovate-shaped, and rough-surfaced leaves at lower height showed the highest PM deposition, suggesting their suitability for planting in urban areas.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Computer Science, Interdisciplinary Applications
Samyuktha Nikkala, Jagadeeswara Rao Peddada, Ramu Neredimelli
Summary: This study conducted a correlation analysis of land surface temperature (LST) using different spectral indices and land use land cover (LULC) classification. The results showed that built-up areas and bare land had a positive correlation with LST, while vegetation cover and water bodies had a negative correlation. The correlation varied depending on the season and the spectral index used.
EARTH SCIENCE INFORMATICS
(2022)
Article
Multidisciplinary Sciences
Nasrin Adlin Syahirah Kasniza Jumari, Ali Najah Ahmed, Yuk Feng Huang, Jing Lin Ng, Chai Hoon Koo, Kai Lun Chong, Mohsen Sherif, Ahmed Elshafie
Summary: Cities are expanding rapidly due to urban population growth, necessitating a comprehensive understanding of growth and environmental changes for long-term planning. Urbanization leads to the formation of impermeable surfaces and the increase of urban land surface temperature, resulting in urban heat islands. This phenomenon is particularly evident in rural communities and villages in Kuala Lumpur, Malaysia. Addressing these effects is crucial for combating climate change and achieving the goals of the Paris Agreement by 2030.
Article
Surgery
Patricia Sylla, Peter Sagar, Stephen S. Johnston, Harikumaran R. Dwarakanathan, Jason R. Waggoner, Michael Schwiers, Sanjoy Roy
Summary: This retrospective study compared clinical outcomes between patients using the ECP Powered Stapler and those using conventional manual circular staplers for left-sided colorectal resection. The ECP trial cohort showed lower incidence of surgical complications compared to the historical cohort, suggesting potential benefits of using the ECP Powered Stapler.
SURGICAL ENDOSCOPY AND OTHER INTERVENTIONAL TECHNIQUES
(2022)
Article
Engineering, Electrical & Electronic
Abhijit Bhowmick, Sanjay Dhar Roy, Sumit Kundu
Summary: This paper studies the performance of an unmanned aerial vehicle (UAV) assisted cooperative cognitive radio (CR) network. By using an RF energy harvester and cooperative sensing decisions, the network throughput and energy efficiency are optimized.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Sayanti Ghosh, Abhijit Bhowmick, Aniruddha Chandra, Sanjay Dhar Roy, Sumit Kundu
Summary: This paper examines a multi-hop cognitive radio (CR) enabled device-to-device (D2D) network that extends communication from a functional area to a non-functional area. D2D users utilize cellular user bands in cognitive mode for information transmission while ensuring service quality for cellular users. The outage probability of the network is derived and the impact of noise power uncertainty is also investigated. Throughput and energy efficiency expressions are developed, taking into account collision constraint and noise uncertainty. Various network parameters are considered, including collision probability, sensing time, and noise uncertainty, and it is observed that collision constraint and noise uncertainty have significant impacts on network performance. A simulation test-bed is developed to verify the analytical results.
INTERNATIONAL JOURNAL OF COMMUNICATION SYSTEMS
(2022)
Article
Women's Studies
Navdeep Kaur, Sanjoy Roy
Summary: This article focuses on the issues faced by female inmates in Mandoli Jail, New Delhi, India, emphasizing on the importance of improving the quality and scope of social work services provided for them. The study highlights the significant health problems, both physical and mental, experienced by these women, and identifies enhancing their mental health as a strategic priority for social workers.
INDIAN JOURNAL OF GENDER STUDIES
(2022)
Article
Engineering, Electrical & Electronic
S. Mondal, S. Dhar Roy, S. Kundu
Summary: In this paper, a novel network that supports simultaneous dual-hop and multi-hop transmissions using non-orthogonal multiple access (NOMA) is proposed. The network efficiently utilizes the existing infrastructure of a multi-hop network for concurrent dual-hop transmissions, and the performance of the network is evaluated and analyzed.
INTERNATIONAL JOURNAL OF ELECTRONICS
(2023)
Article
Telecommunications
Alok Kumar Baranwal, Shashibhushan Sharma, Sanjay Dhar Roy, Sumit Kundu
Summary: With the progress in information technology and wireless technologies, NOMA has emerged as a promising technique for connecting IoT devices. In this paper, the outage performance of relay-assisted signal transmission with NOMA as a multiple access scheme is analyzed. The results show that the system's outage performance depends on the transmit SNR of users, and serving multiple users in NOMA degrades the outage performance in higher SNR regime.
WIRELESS PERSONAL COMMUNICATIONS
(2022)
Article
Business
Md. Rahat Khan, Sanjoy Kumar Roy
Summary: This study aims to develop a sustainable human resource practice model for a labor-intensive industry, based on the evidence from the Bangladeshi ready-made garments sector. The findings highlight the importance of sustainable HR practices in areas such as staffing, training and development, motivation, and maintenance.
REVIEW OF INTERNATIONAL BUSINESS AND STRATEGY
(2023)
Article
Environmental Sciences
Sanjoy Roy, Md Sakhawat Hossain, Mahatub Khan Badhon, Sayam U. Chowdhury, Nusrat Sumaiya, Daniel Depellegrin
Summary: This research collects and analyzes a geospatial database of maritime activities in the northern Bay of Bengal, with a focus on understanding the distribution of human activities at sea and the potential conflicts arising from them. The study highlights the intensity of marine use and conflicts in certain areas, as well as the importance of protecting biodiversity hotspots and nature reserves. The findings provide valuable insights for ecosystem-based management and the urgency of maritime spatial planning in Bangladesh.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Telecommunications
Sayanti Ghosh, Sanjay Dhar Roy, Sumit Kundu
Summary: This article explores the use of unmanned aerial vehicles (UAVs) in downlink NOMA networks to improve connectivity in 5G networks. The outage probability for both orthogonal multiple access (OMA) and NOMA is derived to determine if communication from the ground node to the destination node is possible. Additionally, power allocation is optimized to maximize energy efficiency, and a multiple interference cancellation scheme is used to enhance signal quality at the receiving end.
WIRELESS PERSONAL COMMUNICATIONS
(2023)
Article
Engineering, Biomedical
Stephen S. Johnston, Barbara H. Johnson, Divya Chakke, Sanjoy Roy, Philippe Grange, Esther Pollack
Summary: The use of fixed-height gripping surface (FHGS) and variable-height Tri-StapleTM (VHTS) reloads for transection of the renal vessels during radical nephrectomy showed similar clinical and economic outcomes in non-donor patients.
MEDICAL DEVICES-EVIDENCE AND RESEARCH
(2022)
Article
Green & Sustainable Science & Technology
Sanjoy Roy
Summary: This paper analyzes the functional estimates of short duration mean power generation and associated variability at a site near the port town in peninsular India, where a proposed installation of two-body floating heave buoy wave energy convertor is supposed to be carried out. The study focuses on the application of the concept of capture width function for estimating power output and variability of WEC units that capture energy through oscillatory dynamics of masses, as well as the impact of multi-mode power capture on short duration output power variability. The comparison with the Pelamis WEC shows that it is a more competitive alternative in terms of output power variability compared to floating heave buoys.
Article
Telecommunications
Shashibhushan Sharma, Sanjay Dhar Roy, Sumit Kundu
Summary: This paper analyzes the secrecy performance of a cooperative communication network, where the source transmits information to the destination via multiple relays with multiple antennas, and an eavesdropper can only eavesdrop on the relay. Due to deep fading and shadowing, there is no direct link between the source and the destination, and the signal transmission is completed in two phases: broadcasting and relaying. Each relay follows the decode and forward protocol and receives the information signal with multiple antennas. A selected relay harvests energy from the received signals and transmits both information and jamming signals. The results show that a selected relay can harvest 0.3706 joules of energy with a 5-antenna array when the source transmits the information signal with 5 dBW power. It is also observed that the performance improves by 99.24% when using a 4-antenna system compared to a 2-antenna system when the secrecy threshold is 1 bit/s/Hz. The secrecy performance is measured using the secrecy outage probability (SOP), and a closed-form expression of the SOP is derived and verified with simulation results.
WIRELESS PERSONAL COMMUNICATIONS
(2023)
Proceedings Paper
Computer Science, Artificial Intelligence
S. Reddy Vamshidhar Reddy, Sanjay Dhar Roy
Summary: In this paper, NR5G dual connectivity technology with control/user plan split is proposed for capacity enhancement. The DC architecture with LTE base stations and NR5G base stations is presented, and the performance of ENDC C/U plan split in different user velocities is evaluated by analyzing the transition of C-plane or D-plane and control-plane and user-plane handoffs.
HYBRID INTELLIGENT SYSTEMS, HIS 2021
(2022)
Article
Forestry
Sanjoy Roy, Jean -Michel Leban, Bernhard Zeller, Gregory van der Heijden, Arnaud Reichard, Marie-Christine Gehin, Philippe Santenoise, Laurent Saint-Andre
Summary: Increased exportation of forest harvest residues due to higher demand for woody biomass has led to soil mineral resource depletion and negative effects on tree nutrition and growth. Removing harvest residues and litter significantly reduces tree growth and wood density in young beech and oak forest stands.
Article
Environmental Sciences
Song Song, Yiqiang Xiao, Ruoxiang Tu, Shi Yin
Summary: This study investigates the relationship between thermal perception and the psychological restorative benefits of green space exposure. It demonstrates that short-term exposure to urban park grassland and forest in hot and humid areas increases perceived restorativeness and decreases negative emotions. The study highlights the importance of incorporating thermal perception and psychological restoration in the design and management of urban green spaces.
Article
Environmental Sciences
Bo Yu, Xinwei Lu, Yufan Yang, Zhenze Wang, Kai Lei, Huiyun Pan, Sijia Deng, Tong Zhu, Yingsen Zhang
Summary: This study investigated the contamination, eco-health hazards, and influencing factors of certain carcinogenic toxic elements in resuspendable surface dust in urban communities in Xi'an. The results showed that these elements posed a high cancer risk, particularly to children. Traffic and residential activities were identified as important factors influencing the pollution and risk, while vegetation distribution in the city was found to reduce the risk.
Article
Environmental Sciences
Danyue Zhi, Hepeng Zhao, Yan Chen, Weize Song, Dongdong Song, Yitao Yang
Summary: The configuration of the urban built environment is crucial for sustainability and carbon neutrality. This study employs an interpretive machine learning framework to investigate the heterogeneous impacts of urban morphological features on traffic carbon emissions. The results reveal nonlinear relationships and interactive effects, providing implications for urban planning and carbon emission reduction.
Article
Environmental Sciences
Sajjad Hussain, Muhammad Mubeen, Wajid Nasim, Faisal Mumtaz, Hazem Ghassan Abdo, Raoof Mostafazadeh, Shah Fahad
Summary: This research utilized remote sensing technology to analyze historical trends and predict future changes in land use, land cover, and climate. The findings reveal an increasing built-up area, decreasing vegetation, and rising land surface temperature in the Multan region. This study underscores the importance of remote sensing technology in understanding past and predicting future land transformations and temperature variations, providing valuable insights for decision makers in sustainable land use and climate adaptation.
Article
Environmental Sciences
Dongri Han, Su Yan, Xiumei Sun
Summary: This study examines the impact and mechanism of the Winter Clean Heating Plan for Northern China on air pollution reduction. The research finds that the policy has effectively reduced air pollution emissions in the northern region by 17.3% since its implementation. Economic and urban development factors also play a role in reducing air pollution. The results indicate that the policy has a more significant positive influence on air pollution control in Northwest China's cities and non-provincial capital cities.
