22 results on '"human presence"'
Search Results
2. The status and conservation needs of the Micronesian Megapode (Megapodius laperouse laperouse) across the Mariana archipelago.
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Radley, Paul M., Camp, Richard J., Amidon, Frederick A., Marshall, Ann P., Gorresen, P. Marcos, and Kessler, Curt
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PREDATOR management , *ARCHIPELAGOES , *UNGULATES , *ISLANDS , *PREDATORY animals , *ANIMAL populations - Abstract
Context: Accurate baseline data for wildlife populations are important to track trends of these populations over time and to identify threats to their long-term persistence. Aims: We aimed to assess the status and distribution of the little studied megapode (Megapodius laperouse laperouse) across the Mariana Islands. Methods: Using passive and call playback facilitated surveys in 2008 through 2010, we employed point–transect distance sampling to assess island-level and archipelago-wide status of this megapode. To assess conservation needs, we defined human presence as the current, recent, or intermittent occurrence of humans on islands. Key results: We recorded 657 megapode detections and estimated an archipelago level abundance of 11,542 individuals (95% CI: 5456–17,623) from 699 sampling points across 10 islands. Three islands supported 86% of the megapode population, but cumulatively comprise only 2% of the archipelago's land area. Conclusions: Micronesian Megapodes preferred native forest. Human presence and the availability of native forest may limit their abundance and distribution in the Mariana Islands. Although the probability of detecting megapodes was significantly greater on islands without high human presence, significantly more detections were recorded in forests with dense or closed understory on those islands that supported greater human populations. Implications: Given their status and confined distribution in the Mariana Islands, additional studies investigating megapode incubation sites and movement within and between islands would provide fundamental information on megapode ecology and enhance conservation efforts. Continued and expanded ungulate removal, predator control, and habitat restoration would further enhance the likelihood of megapode persistence in the archipelago. We investigated the archipelago-wide status of Micronesian Megapodes (Megapodius laperouse) in the Mariana Islands. Findings indicate that megapode population and distribution in the Mariana Islands are limited by availability of native forest and human presence. We discuss studies of breeding and movement patterns, and removal of introduced ungulates and predators to benefit the species. [ABSTRACT FROM AUTHOR]
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- 2024
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3. Coexistence in multi-use landscape: linking human activities with functional traits of wild mammals in southern India.
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Behera, Asit K., Kumar, P. Ramesh, Priya, M. Malathi, Zollner, Patrick A., Ramesh, Tharmalingam, and Kalle, Riddhika
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LIFE history theory ,MAMMAL communities ,HUMAN settlements ,MAMMALS ,FOREST reserves ,PREDATION - Abstract
Context: Human presence and land-use activities influence habitat use and activity of species. It is crucial to study the ecological and anthropogenic determinants that drive these relationships. Objectives: We investigated the effects of land-use change and human presence on the habitat use of seven mammalian species and on their activity patterns. Methods: We conducted a camera-trapping survey in Ballari district, India. We deployed camera-traps at 1457 sampling grid cells across Protected Areas (PAs), Reserved Forests (RFs), and adjoining fringe mosaic farmlands (FMFLs). We assessed the influence of 19 covariates related to habitat features, landscape-level human presence, climate, and local-level human presence on species habitat use. We examined the diel activity patterns and activity levels of mammals within different land-use types. Results: Four species exhibited a net negative response to increasing human presence, while three species exhibited positive responses. Respectively, proximity to farmlands, and settlements positively influenced habitat use by Panthera pardus, and Lepus nigricollis,. Increasing direct human presence negatively affected Sus scrofa habitat use. Large body-sized species exhibited higher diurnal activity in PA/RF compared to FMFL while smaller-sized (≤ 2.2 kg) species maintained similar activity patterns across land-use types. Generalist meso-predators exhibited more diurnal activity in RF/FMFL. Conclusions: Ecological and life history traits were strong predictors of species responses to increasing human presence which favoured smaller and generalist species. These insights into the complex mechanisms through which human activities shape mammal communities are important landscape level perspectives on conservation. [ABSTRACT FROM AUTHOR]
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- 2024
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4. Through-the-Wall Human Activity Recognition Using Radar Technologies: A Review
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Jawad Yousaf, Satanai Yakoub, Sara Karkanawi, Taimur Hassan, Eqab Almajali, Huma Zia, and Mohammed Ghazal
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Ultra-wideband (UWB) radar ,IR-UWB radar ,CW-UWB radar ,through-the-wall (TTW) detection ,human motion ,human presence ,Telecommunication ,TK5101-6720 - Abstract
Ultra-wideband radar technology (UWB) has demonstrated its vital role through various applications in surveillance, search and rescue, health monitoring, and the military. Unlike conventional radars, UWB radars use high-frequency, wide-bandwidth pulses, enabling long-range detection and penetrating obstacles. This work presents an in-depth review of UWB radar systems for recognizing human activities in a room and through-the-wall (TTW) with other diverse applications. After briefly discussing different UWB radar working principles and architectures, the study explores their role in various TTW applications in real-world scenarios. An extensive performance comparison of the legacy studies is presented, focusing on detection tools, signal processing, and imaging algorithms. The discussion includes an analysis of the integration of machine learning models. The primary focus is on the detection, movement, monitoring of vital signs, and nonhuman classifications in the context of Through-The-Wall (TTW) scenarios. This study contributes to a better understanding of evolving technology capabilities by integrating artificial intelligence (AI) and robotics to automate and precisely locate the target in various scenarios. Furthermore, the discussion includes the impact of UWB technology on society, future industry trends, the commercial landscape, and ethical issues to understand and future research.
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- 2024
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5. The Theory of Virtuality Culture and Technology-Mediated Human Presence
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Dempsey, Jennifer Camille, Spector, J. Michael, editor, Lockee, Barbara B., editor, and Childress, Marcus D., editor
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- 2023
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6. Disentangling vertebrate spatio-temporal responses to anthropogenic disturbances: evidence from a protected area in central Myanmar
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Aye Myat Thu, Tluang Hmung Thang, Ahimsa Campos-Arceiz, and Rui-Chang Quan
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Activity pattern ,camera trap ,Eld's deer ,free-ranging dog ,human presence ,Myanmar ,occupancy ,settlement ,General. Including nature conservation, geographical distribution ,QH1-199.5 - Abstract
Urbanization of natural landscapes and increasing human populations have brought people and our companion animals into closer contact with wildlife, even within protected areas. To provide guidance for human–wildlife coexistence, it is therefore critical to understand the effects of anthropogenic disturbances and how well native wildlife species survive in human-dominated landscapes. We investigated the spatio-temporal responses of 10 vertebrate taxa, with an emphasis on the Endangered Eld's deer Rucervus eldii thamin, to anthropogenic disturbances in Shwesettaw Wildlife Sanctuary, Myanmar. We quantified anthropogenic disturbances as distance from human settlements, distance from a highway, and the presence of people and free-ranging dogs Canis familiaris. Anthropogenic disturbances had stronger negative impacts on the detection of native wildlife species than on occupancy. Eld's deer avoided areas close to human settlements and showed low diel activity overlap with both people and dogs, although we found a positive association with human presence at the camera-trap sites. Five species exhibited lower diel activity overlap with people in the rainy season when human activity is the highest in our study area. All studied wildlife species shifted to nocturnal activity or did not show any clear activity pattern during the cool-dry season when the presence of dogs increased. The ecological and conservation impacts of dogs are underestimated in South-east Asia, particularly in Myanmar, and this case study highlights the impacts of dogs on the temporal use of habitat by wildlife and the need for better practices in the management of dogs within protected areas.
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- 2023
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7. Disentangling vertebrate spatio-temporal responses to anthropogenic disturbances: evidence from a protected area in central Myanmar.
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Thu, Aye Myat, Thang, Tluang Hmung, Campos-Arceiz, Ahimsa, and Quan, Rui-Chang
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PROTECTED areas ,VERTEBRATES ,PETS ,WILDLIFE refuges ,DOGS ,NATURAL landscaping ,HUMAN settlements ,HUMAN-animal relationships - Abstract
Urbanization of natural landscapes and increasing human populations have brought people and our companion animals into closer contact with wildlife, even within protected areas. To provide guidance for human–wildlife coexistence, it is therefore critical to understand the effects of anthropogenic disturbances and how well native wildlife species survive in human-dominated landscapes. We investigated the spatio-temporal responses of 10 vertebrate taxa, with an emphasis on the Endangered Eld's deer Rucervus eldii thamin , to anthropogenic disturbances in Shwesettaw Wildlife Sanctuary, Myanmar. We quantified anthropogenic disturbances as distance from human settlements, distance from a highway, and the presence of people and free-ranging dogs Canis familiaris. Anthropogenic disturbances had stronger negative impacts on the detection of native wildlife species than on occupancy. Eld's deer avoided areas close to human settlements and showed low diel activity overlap with both people and dogs, although we found a positive association with human presence at the camera-trap sites. Five species exhibited lower diel activity overlap with people in the rainy season when human activity is the highest in our study area. All studied wildlife species shifted to nocturnal activity or did not show any clear activity pattern during the cool-dry season when the presence of dogs increased. The ecological and conservation impacts of dogs are underestimated in South-east Asia, particularly in Myanmar, and this case study highlights the impacts of dogs on the temporal use of habitat by wildlife and the need for better practices in the management of dogs within protected areas. [ABSTRACT FROM AUTHOR]
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- 2023
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8. Breeding in the pandemic: short-term lockdown restrictions in a European capital city did not alter the life-history traits of two urban adapters.
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Corsini, Michela, Jagiello, Zuzanna, Walesiak, Michał, Redlisiak, Michał, Stadnicki, Ignacy, Mierzejewska, Ewa, and Szulkin, Marta
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LIFE history theory ,STAY-at-home orders ,CAPITAL cities ,ANIMAL clutches ,URBAN animals ,BLUE tit ,GREAT tit - Abstract
Humans are transforming natural habitats into managed urban green areas and impervious surfaces at an unprecedented pace. Yet the effects of human presence per se on animal life-history traits are rarely tested. This is particularly true in cities, where human presence is often indissociable from urbanisation itself. The onset of the SARS-CoV-2 outbreak, along with the resulting lockdown restrictions, offered a unique, "natural experiment" to investigate wildlife responses to a sudden reduction in human activity. We analysed four years of avian breeding data collected in a European capital city to test whether lockdown measures altered nestbox occupancy and life-history traits in terms of egg laying date, incubation duration and clutch size in two urban adapters: great tits (Parus major) and blue tits (Cyanistes caeruleus). Lockdown measures, which modulated human presence, did not influence any of the life-history traits investigated. In contrast, the interaction between year and tree cover, a distinct ecological attribute of the urban space, was positively associated with clutch size, a key avian life-history and reproductive trait. This highlights the importance of inter-year variation and habitat quality over human activity on urban wildlife reproduction. We discuss our results in the light of other urban wildlife studies carried out during the pandemic, inviting the scientific community to carefully interpret all lockdown—associated shifts in biological traits. [ABSTRACT FROM AUTHOR]
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- 2023
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9. Permanent and seasonal human presence in the coastal settlements of Lecce
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Francesco Curci, Agim Kercuku, Federico Zanfi, and Christian Novak
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coastal settlement ,second homes ,unauthorised construction ,human presence ,seasonality ,Transportation engineering ,TA1001-1280 ,Urbanization. City and country ,HT361-384 - Abstract
This paper presents the first results of analyses carried out using mobile phone data on human presence (residents, commuters, visitors) in the coastal territory of Lecce (Italy). The aim of the research, conducted in the framework of the DASTU Project ‘Department of Excellence on Fragile Territories’ in collaboration with the Municipality of Lecce, is to provide precise feedback on the actual use of a coastal territory which is mostly inhabited temporarily, marked by unauthorised building, and threatened by various environmental and climate risks. Starting with an acknowledgement of the limits that traditional census and registry data have in detecting the use of territories characterised by seasonal use and informality, the paper analyses the variations in anthropic presence over multiple years and the incidence of permanent residents. The analyses were carried out using mobile positioning data extracted from the TIM Data Visual Insight (DVI) platform and refer to the period between September 2019 and September 2020. The results show evident heterogeneity among the different coastal settlements. In particular, there are substantial differences between the southern marine (San Cataldo, Torre Veneri, Frigole, Montegrappa) and northern ones (Torre Chianca, Spiaggiabella, Torre Rinalda), where the former show a greater presence of stable residents and a less pronounced seasonal fluctuation. These differences are fundamental for urban planning policies to determine in which areas the retreat of the building from the coast could cause more difficulties and inconveniences.
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- 2022
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10. A glimpse into mobile phone data: characteristics, organization, tools
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Fabio Manfredini, Carmelo Di Rosa, Francesco Fagiani, and Viviana Giavarini
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mobile phone data ,data manipulation ,human presence ,mobilty ,Transportation engineering ,TA1001-1280 ,Urbanization. City and country ,HT361-384 - Abstract
This paper aims to present the presence and mobility data provided by TIM, highlighting the acquisition methodology, the levels of spatial and temporal disaggregation, as well as the additional information related to age groups, gender, and classification of behaviours, which are directly supplied by TIM. The construction of a baseline based on mobile phone data for the comparison of temporal trends in the presence of people is also discussed. At the same time, the supporting data obtained from traditional sources or ad hoc surveys will be presented to show how they can facilitate the interpretation of telephone data, its validation, and its use. Finally, a reference on the operational tools used for their processing and visualization will highlight the need to integrate skills, methodologies, and tools for the maximum exploitation of this wealth of information.
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- 2022
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11. Inspiring tourists' imagination: How and when human presence in photographs enhances travel mental simulation and destination attractiveness.
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Li, Yuan (William) and Wan, Lisa C.
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PLACE marketing ,ECOTOURISM ,CROSS-cultural studies ,TOURIST attractions ,PHOTOGRAPHS ,TOURISM marketing - Abstract
Due to the intangible nature of tourism products, successful destination marketing depends on whether visual materials can evoke tourists' vivid fantasies of their future travel experiences. Our research sheds light on an effective visual cue (i.e. human presence) that can be easily manipulated in destination photographs to facilitate such mental simulation processes. Across three experimental studies with cross-cultural subjects, we found that the presence of a person in photos significantly prompted tourists to imagine their future travel experiences in the depicted travel scenes, thereby enhancing the perceived destination attractiveness. However, this favorable effect is mitigated when the photo features an urban (vs. natural) landscape and when the person's face is clearly shown. These findings provide new insights into the theoretical understanding of tourist mental simulation activation and human presence perception, with critical implications for effective destination photo marketing. [ABSTRACT FROM AUTHOR]
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- 2025
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12. Permanent and seasonal human presence in the coastal settlements of Lecce: An analysis using mobile phone tracking data.
- Author
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Curci, Francesco, Kërçuku, Agim, Zanfi, Federico, and Novak, Christian
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CELL phone tracking ,SEASONS ,URBAN planning ,CELL phones ,URBAN policy ,ENERGY conservation in buildings - Abstract
This paper presents the first results of analyses carried out using mobile phone data on human presence (residents, commuters, visitors) in the coastal territory of Lecce (Italy). The aim of the research, conducted in the framework of the DAStU Project 'Department of Excellence on Fragile Territories' in collaboration with the Municipality of Lecce, is to provide precise feedback on the actual use of a coastal territory which is mostly inhabited temporarily, marked by unauthorised building, and threatened by various environmental and climate risks. Starting with an acknowledgement of the limits that traditional census and registry data have in detecting the use of territories characterised by seasonal use and informality, the paper analyses the variations in anthropic presence over multiple years and the incidence of permanent residents. The analyses were carried out using mobile positioning data extracted from the TIM Data Visual Insight (DVI) platform and refer to the period between September 2019 and September 2020. The results show evident heterogeneity among the different coastal settlements. In particular, there are substantial differences between the southern marine (San Cataldo, Torre Veneri, Frigole, Montegrappa) and northern ones (Torre Chianca, Spiaggiabella, Torre Rinalda), where the former show a greater presence of stable residents and a less pronounced seasonal fluctuation. These differences are fundamental for urban planning policies to determine in which areas the retreat of the building from the coast could cause more difficulties and inconveniences. [ABSTRACT FROM AUTHOR]
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- 2022
- Full Text
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13. Sex-Specific Movement Responses of Reeves's Pheasant to Human Disturbance: Importance of Body Characteristics and Reproductive Behavior.
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Lu, Shuai, Liu, Zhengxiao, Tian, Shan, Song, Kai, Hu, Qian, Li, Jianqiang, and Xu, Jiliang
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ANIMAL sexual behavior , *PHEASANTS , *ENDANGERED species listing , *PROBABILITY density function , *BROWNIAN bridges (Mathematics) - Abstract
Simple Summary: Human disturbance has a strong impact on the movement of wild animals. The Reeves's Pheasant is listed as an endangered species by the International Union for Conservation of Nature (IUCN) and a nationally protected species in China. This study evaluated how the movement patterns of this species responded to human disturbance. We observed large differences in movement characteristics between sexes during the breeding season of Reeves's Pheasants, and found that reproduction had a significant effect on the movement of females. Males shifted their movement peaks to earlier times in the day to avoid the presence peaks of humans. The greater the distance to human-modified habitat, the higher the movement intensity of males, and the lower the movement intensity of females. This study suggested that the potential impacts of different forms of human disturbance on wildlife should be considered in future conservation planning. Human disturbance has a strong impact on the movement of wild animals. However, it remains unclear how the movement patterns of the Reeves's Pheasant (Syrmaticus reevesii) respond to human disturbance in human-dominated landscapes. We tracked the movement of 40 adult individual Reeves's Pheasants during the breeding season, and used the dynamic Brownian bridge motion model and kernel density estimation to analyze the diurnal movement patterns of Reeves's Pheasants and their response to human presence. We analyzed the paths of Reeves's Pheasants based on a partial least squares path model, considering habitat conditions, body characteristics, and reproductive behaviors. We found that males had two clear diurnal movement peaks, whereas reproductive and non-reproductive females did not show such movement peaks. Males shifted their movement peaks to earlier times in the day to avoid the presence peaks of humans. The correlation between human-modified habitat and the movement intensity of Reeves's Pheasant differed between sexes. For males, the distance to forest paths had a positive correlation with their movement intensity through affecting body conditions. For females, the distance to forest paths and farmland had a negative correlation with their movement intensity through affecting habitat conditions and reproductive behaviors. Our study provides a scientific basis for the protection of the Reeves's Pheasant and other related terrestrial forest-dwelling birds. [ABSTRACT FROM AUTHOR]
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- 2022
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14. PRESENCE OF ALIEN PRUNUS SEROTINA AND IMPATIENS PARVIFLORA IN LOWLAND FOREST FRAGMENTS IN NE SLOVENIA.
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ŠIPEK, Mirjana, HORVAT, Eva, KOSIĆ, Ivana VITASOVIĆ, and ŠAJNA, Nina
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BLACK cherry ,INTRODUCED plants ,TEMPERATE forests ,ANNUALS (Plants) ,VEGETATION surveys - Abstract
Copyright of Journal of Forestry Society of Croatia / Sumarski List Hrvatskoga Sumarskoga Drustva is the property of Forestry Society of Croatia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2022
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15. Humans Are More Influential Than Coyotes on Mammalian Mesopredator Spatiotemporal Activity Across an Urban Gradient
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Chad W. Moura, Barbara Clucas, and Brett J. Furnas
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human presence ,mesopredators ,overlap ,spatiotemporal activity ,urban gradient ,Evolution ,QH359-425 ,Ecology ,QH540-549.5 - Abstract
For mammalian mesopredators, human-dominated landscapes offer a mosaic of risk and reward. While the reward of anthropogenic food resources may attract mesopredators to human-dominated areas, increased mesopredator activity and abundance in these areas may cause interspecific conflict. For smaller-bodied mesopredators, the perceived risk of intraguild predation by larger mesopredators may be enough to drive spatial and temporal avoidance strategies to reduce risk while still benefiting from anthropogenic resources. We evaluated how the spatiotemporal activity of four non-canid mammalian mesopredators – raccoon (Procyon lotor), striped skunk (Mephitis mephitis), opossum (Didelphis virginiana), and domestic cat (Felis catus) – might change in the presence of an intraguild predator, the coyote (Canis latrans), and a “super predator,” humans. We quantified mesopredator activity by deploying camera traps at 110 sites across an urban gradient in the Sacramento Metropolitan Area in central California, USA. We hypothesized that mesopredators would likely change their spatiotemporal activity in response to urban intensity (H1), coyotes (H2), human presence (H3), and if urban intensity might mediate the response to humans and coyotes (H4). We used single-species occupancy models to test how mesopredators responded to different spatial scales of urbanization, as well as the temporal presence of coyotes and humans. Top single-species models then informed two-species conditional occupancy models to evaluate how mesopredators responded to “dominant” coyotes. Finally, we used temporal overlap analyzes to evaluate whether activity patterns of mesopredators changed in response to humans and coyotes across three levels of urban intensity. Mesopredators did not change their spatial or temporal activity across the urban gradient when coyotes were present. Additionally, coyotes did not influence mesopredator temporal activity at 1-3-day scales; however, raccoons and cats may avoid coyotes at finer scales. Humans influenced mesopredator detectability, as cats and coyotes avoided humans after 1 and 2 days respectively, and opossums avoided urban areas when humans were present within 3 days. Coyotes may play a limited role in altering smaller-bodied mesopredator activity, especially when humans are present. While the impacts of human presence and urban features are often linked, mesopredators may perceive the risk each poses differently, and adjust their activity accordingly.
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- 2022
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16. Field studies of the Artificial Intelligence model for defining indoor thermal comfort to acknowledge the adaptive aspect.
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Karyono, Kanisius, Abdullah, Badr M., Cotgrave, Alison, Bras, Ana, and Cullen, Jeff
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ARTIFICIAL neural networks , *THERMAL comfort , *ARTIFICIAL intelligence , *FIELD research , *NATURAL ventilation , *SUPERVISED learning - Abstract
Numerous Artificial Intelligence (AI) solutions are available for achieving thermal comfort. They were either trained with limited datasets or using personalized training with limited field studies. This work assessed the model that used the ASHRAE multiple databases as the shallow supervised learning dataset for an Artificial Neural Network (ANN) based controller suitable for the residential dwellings' node. The learning accuracy can be increased to 96.1%. This paper presented the field studies to show the model performances for the common UK dwellings: the prior 1970s, the new, modular, refurbished, and the use of new materials to improve indoor thermal performance. The result shows that the model was able to perform in different environments and able to acknowledge adaptive human comfort. This was shown by the ability to represent 98.90% of the ASHRAE Standard 55 data, 6.06% improvement from the previous research. As a result, the broader comfort zone acknowledgement can lead to energy saving whilst maintaining comfort by the possibility of lowering the temperature set point. This study also proves that further energy savings can be acquired from the occupants' presence, scheduling, and activities. These factors can increase the comfort probability to more than 10%. [Display omitted] • This paper addresses the gap between the physiology and the psychology thermal comfort approach, dominated by AI solutions. • The work shows a wider comfort zone which has been identified to become progressively narrower over the past several decades. • The field studies represent major UK-dwelling cases that weren't addressed in the previous Artificial Intelligence approach. • The occupant presence and scheduling can contribute to more than a 10% increase in comfort which impacts energy saving. • This work highlights the possibility of achieving indoor thermal comfort with less energy for more sustainable dwellings. [ABSTRACT FROM AUTHOR]
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- 2024
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17. Effects of Human Presence and Movement on Received Signal Strength Levels in a 2.4 GHz Wireless Link: An Experimental Study
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Wounchoum, Phairote, Vanichpattarakul, Thanchanok, Dumumpai, Kittitorn, Chaoboworn, Vasin, Saito, Hiroshi, and Booranawong, Apidet
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- 2022
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18. The Impact of Human Presence on Terrestrial Mammals in Secondary Regenerating Forest of the Peruvian Amazon
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Pandya, Duncan and Pandya, Duncan
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Human disturbance is becoming an ever-bigger threat to biodiversity across the globe and should continue to be a field of conservation priority. Urbanisation, research and tourism put unavoidable pressure on the surrounding flora and fauna, therefore we need to gain knowledge on how to reduce future harm. Here we investigated the effects of human presence on medium-large terrestrial mammals in the south-eastern Peruvian Amazon, using camera traps to measure the number of human and mammal observations at varying distances from our research centre and the hiking trails. Species richness and the Shannon and Inverse Simpson diversity indices were also calculated during the four-month study period. Nineteen species were detected across fourteen camera sites. Distance from camp was positively correlated with species richness and the diversity indices, but showed no correlation with total mammal observations. Distance from nearest trail was negatively correlated with species richness, total mammal observations and the diversity indices. Total human observations was negatively correlated with species richness and the diversity indices, but had no impact on total mammal observations. Nevertheless, these results often had high p-values and low sample size and therefore should be interpreted with caution. Omnivores were the most sensitive trophic guild, showing a statistically significant negative correlation with total human observations, and a statistically significant positive correlation with distance from nearest trail. It is important then to assess these responses to human disturbance at the community and species level, as to truly understand the impact we are having.
- Published
- 2023
19. Impact of video-mediated online social presence and observance on cognitive performance
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Sutskova, Olga, Senju, Atsushi, and Smith, Timothy
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VR ,Social Psychology ,Virtual Interaction ,Performance ,Social and Behavioral Sciences ,Remote Work ,SFE ,Agent ,Education ,Other Psychology ,Social Inhibition ,Social Facilitation ,Online and Distance Education ,Psychology ,Virtual Agency ,Online Presence ,Mere Presence Effect ,Social Presence ,Virtual Presence ,Online Impact ,TMB ,Cognitive Performance ,Cognitive Psychology ,AE ,COVID-19 ,Human Presence ,Video ,Human Computer Interaction ,Virtual Social ,Avatar ,APA ,Remote Learning ,Visual Presence ,FOS: Psychology ,Virtual Other ,Social Isolation ,Registered Report ,Social Impact ,Audience Effect ,AI interaction ,MPE - Abstract
The project will directly address the cognitive effects of the shifts to technology-mediated interactions during remote working, Since the COVID-19 related lockdown, professionals and students around the world started joining peers and colleagues for video calls, and running the video feed on the background, whilst working on personal, and often non-related projects. Anecdotal evidence suggests that people who engage in this working method report feeling less lonely, more productive, and more motivated to work. This phenomenon epitomises the rapidly emerging, technology-mediated ‘creative solutions’ to remain motivated and productive whilst working from home, which warrants the need for formal research. We intend to investigate the phenomenon of the social presence of others in an online video call and its impact on the cognitive performance of participants during co-presence. The social impact on cognitive performance will be tested within the well-established theoretical framework of the Social Facilitation Effect (SFE), where the presence of others facilitate or inhibit cognitive performance. The proposed experiment will test how cognitive performance changes when we are attentively observed by others and when others are merely co-present during the video chat, relative to when we perform alone. For ecological validity, the participants will be tested online from the comfort of their own homes, using a computer set-up that is habitual to their home-based work or study layout.
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- 2022
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20. The extended avian urban phenotype: anthropogenic solid waste pollution, nest design, and fitness
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Zuzanna Jagiello, Michela Corsini, Łukasz Dylewski, Juan Diego Ibáñez-Álamo, and Marta Szulkin
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Environmental Engineering ,Urbanisation ,Reproductive success ,Solid Waste ,Pollution ,Solid waste ,Songbirds ,Phenotype ,Human presence ,Plastic pollution ,Nest ,Animals ,Environmental Chemistry ,Passeriformes ,Environmental Pollution ,Waste Management and Disposal - Abstract
Solid waste pollution (garbage discarded by humans, such as plastic, metal, paper) has received increased attention given its importance as a global threat to biodiversity. Recent studies highlight how animals incorporate anthropogenic materials into their life-cycle, for example in avian nest construction. While increasingly monitored in natural areas, the influence of solid waste pollution on wildlife has been seldomexplored in the urban habitat. There is limited data on the relationship between anthropogenic solid waste pollution, nest design, and reproductive success in an urban context.We address this knowledge gap (i) by investigating the presence of environmental solid waste pollution in the breeding habitats of great tits Parus major and blue tits Cyanistes caeruleus reproducing in a gradient of urbanisation, and (ii) by quantifying (ii) the contribution of different anthropogenic materials in their nests. We further examine potential drivers of solid waste pollution by inferring three distinct properties of the urban space: environmental solid waste pollution on the ground, human presence, and the intensity of urbanisation (e.g impervious surfaces) in nestbox vicinity. Finally, (iii) we explore the relationship between anthropogenic nest materials and reproductive success. We found that environmental solid waste pollution was positively associated with human presence and urbanisation intensity. There was also a positive relationship between increased human presence and the amount of anthropogenicmaterials in great tit nests. Interestingly, in both species, anthropogenic nest materials covaried negatively with nest materials of animal origin (fur and feathers).We suggest that fur and feathers – key insulating materials in nest design – may be scarcer in areas with high levels of human presence, and are consequently replaced with anthropogenic nest materials. Finally, we report a negative relationship between anthropogenic nest materials and blue tit reproductive success, suggesting species-specific vulnerability of urban birds to solid waste pollution., Polish National Agency for Academic Exchange (NAWA) PPN/IWA/2019/1/00070 PPN/IWA/2019/1/00069, Polish National Science Centre (NCN) 2014/14/E/NZ8/00386 2016/21/B/NZ8/03082, Foundation for Polish Science (FNP) scholarship "START"
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- 2022
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21. Cortisol metabolites vary with environmental conditions, predation risk, and human shields in a wild primate, Cercopithecus albogularis.
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LaBarge, Laura R., Allan, Andrew T.L., Berman, Carol M., Hill, Russell A., and Margulis, Susan W.
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PREDATION , *ECOLOGICAL disturbances , *HYDROCORTISONE , *PRIMATES , *WATER shortages , *RISK perception - Abstract
Environmental challenges are often associated with physiological changes in wildlife that allow animals to maintain homeostasis. Among these, scarcity in resources, and risks from predators, competitors, and humans can all result in psychological and physiological stress. Yet, for habituated species, it is not clear whether this relationship with humans still holds to a lesser degree or is outweighed by the benefits of human presence – such as serving as a buffer from competitors or predators. We investigated how human presence and environmental challenges such as resource availability, weather, predation, and competition may be associated with variation in fecal cortisol metabolite levels (FCMs) in a group of samango monkeys (Cercopithecus albogularis) in the Soutpansberg Mountains, South Africa. FCMs can often broadly track environmental challenges and perturbations. Initially, we employed an exploratory analysis comparing candidate models representing biological hypotheses and found that those incorporating information on human presence had less weight than models for food availability, thermoregulation, and water scarcity. When we examined a subset of the data that included information on intergroup competition and predator alarm calls, we found that FCMs were higher on the day following potential predator encounters but not competitive interactions. As observer numbers increased, responses to predators flattened, indicating that the presence of several humans might deter predators and/or affect samangos' perception of danger – yet we could not distinguish between these possibilities. Together, these results suggest that ecological perturbations track with FCMs in this study population and challenge long-held assumptions that human presence has negligible effects on habituated study animals. • Environmental challenges help explain FCM levels in wild sykes/samango monkeys. • Cycles of researcher presence/absence have little effect on this habituated group. • Greater numbers of observers may deter more dangerous predators or reduce monkeys' risk perception. • Human presence did not apparently affect responses to intergroup competition. [ABSTRACT FROM AUTHOR]
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- 2022
- Full Text
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22. Dense Indoor Sensor Networks: Towards passively sensing human presence with LoRaWAN.
- Author
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Grübel, Jascha, Thrash, Tyler, Aguilar, Leonel, Gath-Morad, Michal, Hélal, Didier, Sumner, Robert W., Hölscher, Christph, and Schinazi, Victor R.
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WIDE area networks ,SENSOR networks ,GATEWAYS (Computer networks) ,INTERNET of things ,DIGITAL twins ,AUGMENTED reality ,MAINTENANCE costs - Abstract
Sensors have become ubiquitous in buildings but are rarely connected to a network, and their potential to analyse the performance, use, and interaction with a building is not yet fully realised. In the coming years, we expect sensors in buildings to become part of the Internet of Things (IoT) and grow in numbers to form a Dense Indoor Sensor Network (DISN) that allows for unprecedented analysis of the performance, use, and interaction with buildings. Multiple technologies vie for leading this transformation. We explore Long Range Wide Area Network (LoRaWAN) as an alternative for creating indoor sensor networks that extends beyond its original long-distance communication purpose. For the present paper, we developed a DISN with 390 sensor nodes and four gateways and empirically evaluated its performance for two years. Our analysis of more than 86 million transmissions revealed that DISN s achieve a much lower distance coverage compared to estimations from previous research indicating that more gateways are required. In addition, the deployment of multiple gateways decreased the loss of transmissions due to environmental and network factors. Given the complexity of our system, we received few colliding concurrent messages, which demonstrates a gap between the projected requirements of LoRaWAN systems and the actual requirements of real-world applications given sufficient gateways. We also contribute to the modelling of transmissions with our comparison of attenuation models derived from multiple methodologies. Across all models, we find that robust coverage in an indoor environment can be maintained by placing a gateway every 30 m and every 5 floors. Finally, we also investigate the application of DISN s for the passive sensing and visualisation of human presence using a Digital Twin (DT) and a Fused Twins (FT) representation in Augmented Reality (AR). A passive sensing approach allows us to gather relevant data on human use of a building while still preserving privacy via the aggregation process. Immersive in situ visualisations in FT allow for new interactions and new forms of participation. We conclude that DISN s are already technologically feasible today and basing them on Low Power Wide Area Network (LPWAN) offers intriguing possibilities to reduce energy consumption, maintenance cost, and bandwidth use while also enabling new forms of human-building interaction. [Display omitted] • Dense Indoor LoRaWAN with 4 gateways and 390 sensors over 8 floors and 64 m. • More than 86 million transmissions and 139 million data points collected over two years. • Signal quality analysis requires mixed models instead of linear models, on par with modern neural networks. • A gateway every 30 m and 5 floors guarantees signal quality (30 × 5 rule). • Our Dense Indoor Sensor Network captures indicators of human presence in space. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
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