Assessment of the impact of spatio-temporal attributes of wetlands on stream flows using a hydrological modelling framework: a theoretical case study of a watershed under temperate climatic conditions

2015 ◽  
Vol 30 (11) ◽  
pp. 1768-1781 ◽  
Author(s):  
M. Fossey ◽  
A.N. Rousseau ◽  
S. Savary
Keyword(s):  
Hydrological Modelling ◽  
Climatic Conditions ◽  
Stream Flows ◽  
Modelling Framework ◽  
Spatio Temporal ◽  
The Impact

scholarly journals Nepal, a multi-hazard risk country: Spatio-temporal analysis

2019 ◽  
Vol 58 ◽  
pp. 145-152
Author(s):  
Ganesh Kumar Jimee ◽  
Kimiro Meguro ◽  
Amod Mani Dixit
Keyword(s):  
Temporal Analysis ◽  
Significant Loss ◽  
Climatic Conditions ◽  
Decision Makers ◽  
Economic Conditions ◽  
Tectonic Processes ◽  
Active Tectonic ◽  
Spatio Temporal ◽  
The Impact ◽  
Complex Geology

Nepal, though covers small area of the earth, exposes complex geology with active tectonic processes, high peaks, sloppy terrain and climatic variation. Combination of such geo-physical and climatic conditions with existing poor socio-economic conditions, unplanned settlements, rapidly increasing population and low level of awareness has put the country in highest risk to multi-hazard events. Fires, floods, landslides and epidemics are the most frequent hazard events, which have cumulatively caused a significant loss of lives and property every year. However, due to diversity in physiographic, climatic and socio-economic conditions within the country, the type, frequency and degree of the impact of such events differs in different places. During the period of 46 years (1971-2016), an average of 2 events have been occurred causing 3 deaths/missing every day. Disaster events occurred most frequently during the months of April, July and August, while relatively lesser number of events have been reported during January, November and December. However, earthquakes have been reported in different months, regardless with the season. This paper is an effort to analyse the spatial distribution and temporal variation of disaster events in Nepal. Further it has drawn a trend of disasters occurrence in Nepal, which will help the decision makers and other stakeholders for formulating Disaster Risk Management (DRM) plan and policies on one hand and heighten citizens’ awareness of against disasters on the other.

scholarly journals Spreading of SARS-CoV-2 in West Africa and assessment of risk factors

2020 ◽  
Vol 148 ◽  
Author(s):  
B. Tinto ◽  
S. Salinas ◽  
A. Dicko ◽  
T. S. Kagone ◽  
I. Traore ◽  
...  
Keyword(s):  
Risk Factors ◽  
West Africa ◽  
Climatic Factors ◽  
Geographic Area ◽  
Climatic Conditions ◽  
Continuous Increase ◽  
The Moment ◽  
The Impact ◽  
Hospital Equipment

Abstract Although the African continent is, for the moment, less impacted than the rest of the world, it still faces the risk of a spread of COVID-19. In this study, we have conducted a systematic review of the information available in the literature in order to provide an overview of the epidemiological and clinical features of COVID-19 pandemic in West Africa and of the impact of risk factors such as comorbidities, climatic conditions and demography on the pandemic. Burkina Faso is used as a case study to better describe the situation in West Africa. The epidemiological situation of COVID-19 in West Africa is marked by a continuous increase in the numbers of confirmed cases. This geographic area had on 29 July 2020, 131 049 confirmed cases by polymerase chain reaction, 88 305 recoveries and 2102 deaths. Several factors may influence the SARS-CoV-2 circulation in Africa: (i) comorbidities: diabetes mellitus and high blood pressure could lead to an increase in the number of severe cases of SARS-CoV-2; (ii) climatic factors: the high temperatures could be a factor contributing to slow the spread of the virus and (iii) demography: the West Africa population is very young and this could be a factor limiting the occurrence of severe forms of SARS-CoV-2 infection. Although the spread of the SARS-CoV-2 epidemic in West Africa is relatively slow compared to European countries, vigilance must remain. Difficulties in access to diagnostic tests, lack of hospital equipment, but also the large number of people working in the informal sector (such as trading, businesses, transport and restoration) makes it difficult to apply preventive measures, namely physical distancing and containment.

Computation of Temporal Decline to a Vanished Island A Case Study Zalzal Koh

2019 ◽  
Author(s):  
Ali Asghar ◽  
Muhammad Ayaz Ahmad ◽  
Memona Zafar ◽  
Shazma Saman ◽  
Muhammad Awais Arshad ◽  
...  
Keyword(s):  
Water Waves ◽  
Dead Sea ◽  
Strike Slip ◽  
Landsat 8 ◽  
Reduced Pressure ◽  
Richter Scale ◽  
Pressure Water ◽  
Spatio Temporal ◽  
The Impact

A massive tremor stuck Baluchistan Pakistan on September 24, 2013 with a magnitude of 7.7 recorded on Richter scale. The epicenter was Awaran Baluchistan which directly affected about 300,000 people leaving about 386 causalities. The impact of this earthquake was so much large that it created a new landmass which was named as Zalzala Koh later. It was the result of strike slip faulting at a depth of 15km. The new born island was full of rich minerals, gases and dead sea animals. This island was 60 feet high, 100 feet wide and 250 feet long. The classification results of Landsat 8 show that the island completely disappeared in 2019 after 6 six years of its birth. First the volume of this island decreases due to reduced pressure of internal gases and secondly, the high-pressure water waves vanished it completely. Satellite imagery proved efficient for spatio-temporal monitoring of various landuse classes.

scholarly journals Spatio-Temporal Visualisation of Reflections from Building Integrated Photovoltaics

2018 ◽  
Author(s):  
Roland Schregle ◽  
Christian Renken ◽  
Stephen Wittkopf
Keyword(s):  
Reference Material ◽  
Distribution Functions ◽  
High Temporal Resolution ◽  
Complex Data ◽  
3 Dimensional ◽  
Building Integrated Photovoltaics ◽  
Computational Workflow ◽  
Spatio Temporal ◽  
The Impact

With the increasing adoption of building integrated photovoltaics (BIPV), concerns arise about potential glare. While recommended criteria to assess glare exist, it is challenging to apply these in the spatial and temporal domains and communicate the complex data to planning authorities and clients. In this paper we present a new computational workflow using annual daylight simulation, material modelling using bi-directional scattering distribution functions (BSDFs) and image-based postprocessing to obtain 3-dimensional renderings of cumulative annual irradiance and glare duration on the built environment. The annual daylight simulation considers relevant sun positions in high temporal resolution (15-minute timesteps) and measured BSDFs to model different PV materials. The postprocessing includes a relative irradiance visualisation comparing the impact of a proposed PV proportional to a reference material. It also includes a new spatio-temporal workflow to assess the glare duration based on recommended thresholds. We demonstrate this workflow with a case study of a proposed PV roof for a church, assessing the glare potential of two different PV materials. Our visualisations indicate glare durations well below the thresholds with satinated PVs, and in noncritical zones outside observer positions with standard PVs. Thus the proposed PV roof does not cause any disturbing glare.

scholarly journals Spatio-Temporal Visualisation of Reflections from Building Integrated Photovoltaics

2018 ◽  
Author(s):  
Roland Schregle ◽  
Christian Renken ◽  
Stephen Wittkopf
Keyword(s):  
Reference Material ◽  
Distribution Functions ◽  
High Temporal Resolution ◽  
Complex Data ◽  
3 Dimensional ◽  
Building Integrated Photovoltaics ◽  
Computational Workflow ◽  
Spatio Temporal ◽  
The Impact

With the increasing adoption of building integrated photovoltaics (BIPV), concerns arise about potential glare. While recommended criteria to assess glare exist, it is challenging to apply these in the spatial and temporal domains and communicate the complex data to planning authorities and clients. This paper presents a new computational workflow using annual daylight simulation, material modelling using bi-directional scattering distribution functions (BSDFs) and image-based postprocessing to obtain 3-dimensional renderings of cumulative annual irradiance and glare duration on the built environment. The annual daylight simulation considers relevant sun positions in high temporal resolution (15-minute timesteps) and measured BSDFs to model different PV materials. The postprocessing includes a relative irradiance visualisation comparing the impact of a proposed PV proportional to a reference material. It also includes a new spatio-temporal workflow to assess the glare duration based on recommended thresholds. This workflow is demonstrated with a case study of a proposed PV roof for a church, assessing the glare potential of two different PV materials. The visualisations indicate glare durations well below the thresholds with satinated PVs, and in noncritical zones outside observer positions with standard PVs. Thus the proposed PV roof does not cause any disturbing glare.

Assessing the Impact of Vegetation in the Visibility Connection and Thermal Comfort in the Urban Outdoors (Case Study: Shafagh Park)

2021 ◽  
Author(s):  
Alireza Karimi ◽  
Darya Gachkar ◽  
Sadaf Gachkar ◽  
soheila aghlemand
Keyword(s):  
Thermal Comfort ◽  
Urban Parks ◽  
Climatic Conditions ◽  
Outdoor Thermal Comfort ◽  
Favorable Conditions ◽  
The Impact ◽  
The Relationship ◽  
Good Visibility

Abstract Regarding the significant impact of visibility, landscape, and thermal comfort on the presence of users’ attendance in urban parks, there is a severe interest in studies on the amount of visibility and the outdoor thermal comfort especially in a district with hot summers. this research, after investigating the shafagh park based on space laws and the relationship between park spaces with each other in terms of accessibility and visibility to achieve the effect of plants, then, based on the obtained data, the role of plants in evaluating thermal comfort conditions in the park space was investigated and finally, their relationship with each other has been examined. results have revealed that, plants have an undeniable role in improving the conditions of thermal comfort and visual visibility and user movement in spaces, so that, the best points in terms of thermal comfort, had a favorable view and perspective, while, areas of the park that did not have good visibility and landscape did not experience favorable conditions in terms of thermal comfort. Therefore, architects, landscape architects, and urban designers who research the problem of thermal comfort and landscape analysis in urban parks can use the findings of this article for effective outcomes, especially in parks with climatic conditions use similar in Tehran.

scholarly journals Parasite invasion following host reintroduction: a case study of Yellowstone's wolves

2012 ◽  
Vol 367 (1604) ◽  
pp. 2840-2851 ◽  
Author(s):  
Emily S. Almberg ◽  
Paul C. Cross ◽  
Andrew P. Dobson ◽  
Douglas W. Smith ◽  
Peter J. Hudson
Keyword(s):  
Good Health ◽  
Sarcoptes Scabiei ◽  
High Morbidity ◽  
Resource Quality ◽  
Parasite Invasion ◽  
Spatio Temporal ◽  
Canid Species ◽  
The Impact ◽  
Better Than

Wildlife reintroductions select or treat individuals for good health with the expectation that these individuals will fare better than infected animals. However, these individuals, new to their environment, may also be particularly susceptible to circulating infections and this may result in high morbidity and mortality, potentially jeopardizing the goals of recovery. Here, using the reintroduction of the grey wolf ( Canis lupus ) into Yellowstone National Park as a case study, we address the question of how parasites invade a reintroduced population and consider the impact of these invasions on population performance. We find that several viral parasites rapidly invaded the population inside the park, likely via spillover from resident canid species, and we contrast these with the slower invasion of sarcoptic mange, caused by the mite Sarcoptes scabiei . The spatio-temporal patterns of mange invasion were largely consistent with patterns of host connectivity and density, and we demonstrate that the area of highest resource quality, supporting the greatest density of wolves, is also the region that appears most susceptible to repeated disease invasion and parasite-induced declines. The success of wolf reintroduction appears not to have been jeopardized by infectious disease, but now shows signs of regulation or limitation modulated by parasites.

scholarly journals Spatio-Temporal Visualisation of Reflections from Building Integrated Photovoltaics

Buildings ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 101 ◽  
Author(s):  
Roland Schregle ◽  
Christian Renken ◽  
Stephen Wittkopf
Keyword(s):  
Reference Material ◽  
Distribution Functions ◽  
High Temporal Resolution ◽  
Complex Data ◽  
3 Dimensional ◽  
Building Integrated Photovoltaics ◽  
Computational Workflow ◽  
Spatio Temporal ◽  
The Impact

With the increasing adoption of building integrated photovoltaics (BIPV), concerns arise about potential glare. While recommended criteria to assess glare exist, it is challenging to apply these in the spatial and temporal domains and communicate the complex data to planning authorities and clients. This paper presents a new computational workflow using annual daylight simulation, material modelling using bi-directional scattering distribution functions (BSDFs) and image-based postprocessing to obtain 3-dimensional renderings of cumulative annual irradiance and glare duration on the built environment. The annual daylight simulation considers relevant sun positions in high temporal resolution (15-min timesteps) and measured BSDFs to model different PV materials. The postprocessing includes a relative irradiance visualisation comparing the impact of a proposed PV proportional to a reference material. It also includes a new spatio-temporal workflow to assess the glare duration based on recommended thresholds. This workflow is demonstrated with a case study of a proposed PV roof for a church, assessing the glare potential of two different PV materials. The visualisations indicate glare durations well below the thresholds with satinated PVs, and in noncritical zones outside observer positions with standard PVs. Thus the proposed PV roof does not cause any disturbing glare.

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