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41
Productive and monetary efficiency of radish and coriander intercropping under organic management
Published 2025-01-01“…The first factor was constituted by four equitable amounts of hairy woodrose and roostertree biomass (20, 35, 50 and 65 t ha-1 on a dry basis), and the second factor was constituted by coriander population densities (40, 60, 80 and 100% of the recommended density for monocropping, RDM). …”
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42
GPS Trajectory-Based Spatio-Temporal Variations of Traffic Accessibility under Public Health Emergency Consideration
Published 2021-01-01“…Then, we analyze the spatial disparity and the temporal variation and measure the matching degree between healthcare accessibility and population density. From the perspective of epidemic prevention, we evaluate the medical capacity of the designated hospitals. …”
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43
Correlation between vitamin D levels, individual and socio-demographic characteristics and COVID-19 infection and death rates in 20 European countries: A modelling study
Published 2020-12-01“…The correlation of cases with vitamin D levels, stroke deaths, and respiratory deaths was r2 = 0.712, while the correlation of deaths with population density, levels of physical inactivity, and stroke deaths was r2 = 0.745. …”
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44
Regional Disparities in Measles Vaccination Coverage and Their Associated Factors: An Ecological Study in Japan
Published 2025-02-01“…Vaccination coverage was significantly positively associated with population density and negatively associated with the proportion of single-father households, mothers aged ≥30 years, and the ADI (incidence rate ratios: 1.004, 0.976, 0.999, and 0.970, respectively). …”
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45
Assessment of Ecosystem Vulnerability in the Tropic of Cancer (Yunnan Section)
Published 2025-01-01“…Human activities, particularly road and population density, are identified as significant drivers of ecological vulnerability. …”
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46
Impacts of environmental quality and employment resilience during the coronavirus disease 2019 recession and recovery
Published 2024-09-01“…Partially, during the recession and recovery periods due to coronavirus disease 2019, technology and information, population, and population density negatively impacted the environmental quality index. …”
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47
PROBLEMS OF URBANIZATION IN THE CONTEXT OF CREATING A COMFORTABLE URBAN ENVIRONMENT
Published 2019-06-01“…A number of problems, associated with the development of cities: high population density, changes in insolation norms, lack of space for the formation of a comfortable urban environment, etc has been considered in the article. …”
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48
Agri-business for elderly people through the Internet
Published 2012-10-01“…Secondly, it overcame the disadvantageous condition of being based in a mountain village with a low population density, where it is difficult to develop a communications infrastructure. …”
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49
A Multi-Disciplinary Review of Current Sea-Level Rise Research in Florida
Published 2013-02-01“…Sea-level rise is an issue of paramount importance for the state of Florida due to its lengthy coastline, low relief, high coastal population density, ecologically and economically vital beaches, estuaries, and wetlands, and porous limestone geology. …”
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50
Spatial Interregional Spread of COVID-19 Through Commuter Interdependence
Published 2020-07-01“…The article also examines commuter links and the role they have played in the spread of COVID-19 in Germany as well as bad weather conditions and a high population density.…”
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51
Weakly coupled traveling waves for a model of growth and competition in a flow reactor
Published 2005-10-01“…For a reaction-diffusion model of microbial flow reactor with twocompeting populations, we show the coexistence of weakly coupled travelingwave solutions in the sense that one organism undergoes a population growthwhile another organism remains in a very low population density in the firsthalf interval of the space line; the population densities then exchange theposition in the next half interval. …”
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52
Asymptotic behavior of a delayed stochastic logistic model with impulsive perturbations
Published 2017-09-01“…The impulse is introduced at fixed moments and the stochastic perturbation is of white noise type which is assumed to be proportional to the population density. We start with the existence and uniqueness of the positive solution of the model, then establish sufficient conditions ensuring its global attractivity. …”
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53
A Multi-Disciplinary Review of Current Sea-Level Rise Research in Florida
Published 2013-02-01“…Sea-level rise is an issue of paramount importance for the state of Florida due to its lengthy coastline, low relief, high coastal population density, ecologically and economically vital beaches, estuaries, and wetlands, and porous limestone geology. …”
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54
Des paysages agroforestiers à l’interface entre ressource, production et conservation (Uttarakhand, Inde)
Published 2017-07-01“…In India, where population density exacerbates environmental, economic and social problems, agroforestry associations play a key role in the composition of rural landscapes. …”
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55
Floating Photovoltaic Systems in Italy: Challenges and Future Prospects in an Uncertain Regulatory Framework
Published 2024-12-01“…This feature is particularly pertinent in geographic contexts characterised by high population density and limited land availability, as is the case in many regions of Italy. …”
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56
Reaction-diffusion for fish populations with realistic mobility
Published 2024-12-01“…However, constant diffusivity in a population density corresponds to standard Brownian motion of individuals, with a normal distribution for displacement over a fixed time interval. …”
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57
Assessment of environmental risks to the Voronezh Oblast public health resulted from contamination of drinking water sources
Published 2021-10-01“…The relevance of research is particularly high for the Central Black Earth Region due to the high population density and the presence of numerous dispersed sources of environmental risk with a chemical type of impact on natural waters. …”
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58
The evolutionarydynamics of a population model with a strong Allee effect
Published 2015-03-01“…The model is a nonlinear, planeautonomous system whose state variables are population density and the meanof a phenotypic trait, which is subject to Darwinian evolution, thatdetermines the population's inherent (low density) growth rate (fitness). …”
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59
Waterbird diversity and its influencing factors in various types of coastal wetlands in the Bohai Rim region
Published 2025-01-01“…Macrobenthic biodiversity influenced food web dynamics via predation and competition, leading to a marginally negative impact on waterbird diversity. Regional population density significantly impacted waterbird diversity in island and tidal wetlands, highlighting the necessity of establishing and managing protected areas to sustain waterbird diversity. …”
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60
Spatiotemporal evolution of landscape ecological risk and its driving factors of the Beijing–Tianjin–Hebei major mineral belt, 1985–2022
Published 2025-01-01“…The ‘high-high’ aggregations are primarily located in the northern, central and western parts of the study area, while the ‘low-low’ aggregation zones are mainly located in the southeastern study region. (4) The spatial distribution of landscape ecological risk is predominantly shaped by population density and slope. In the context of interactive factor detection, the positive interaction between slope and average annual temperature, night-time illumination and slope, population density and annual precipitation were identified as exerting a more significant influence on the observed spatial differentiation of landscape ecological risk. …”
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