scholarly journals EXTRACTING DIMENSIONS AND LOCATIONS OF DOORS, WINDOWS, AND DOOR THRESHOLDS OUT OF MOBILE LIDAR DATA USING OBJECT DETECTION TO ESTIMATE THE IMPACT OF FLOODS

Author(s):  
S. Van Ackere ◽  
J. Verbeurgt ◽  
L. De Sloover ◽  
A. De Wulf ◽  
N. Van de Weghe ◽  
...  

<p><strong>Abstract.</strong> Increasing urbanisation, changes in land use (e.g., more impervious area) and climate change have all led to an increasing frequency and severity of flood events and increased socio-economic impact. In order to deploy an urban flood disaster and risk management system, it is necessary to know what the consequences of a specific urban flood event are to adapt to a potential event and prepare for its impact. Therefore, an accurate socio-economic impact assessment must be conducted. Unfortunately, until now, there has been a lack of data regarding the design and construction of flood-prone building structures (e.g., locations and dimensions of doors and door thresholds and presence and dimensions of basement ventilation holes) to consider when calculating the flood impact on buildings. We propose a pipeline to detect the dimension and location of doors and windows based on mobile LiDAR data and 360° images. This paper reports on the current state of research in the domain of object detection and instance segmentation of images to detect doors and windows in mobile LiDAR data. The use and improvement of this algorithm can greatly enhance the accuracy of socio-economic impact of urban flood events and, therefore, can be of great importance for flood disaster management.</p>

2021 ◽  
Author(s):  
Dandan Liu ◽  
Yiheng Chen ◽  
Jinhui Huang ◽  
Xiaogang Shi

&lt;p&gt;With the accelerating urbanization in developing countries, the threats of extreme rainfall and flood events are increasing. The impact of flood disasters severely threatens the safety of cities with a huge population. In order to quantitatively study the impact of urbanization development on urban floods, the hydrological characteristics of two adjacent basins will be analyzed and compared in this study -- Shenzhen, China with rapid urbanization in the past 40 years, and Hong Kong, China that was already urbanized.&lt;/p&gt;&lt;p&gt;The methods of this study mainly include the following two points. Firstly, in order to clarify the urbanization development process of the study regions, the geospatial database of surface impervious area of two adjacent basins from 1986 to 2018 was obtained in this study. In addition, this study intends to predict the impervious area of the study area in the future years through urban planning. The prediction method is based on adaptive cell deep learning analysis method. Secondly, in order to simulate the waterlogging situation in the two regions, this study intends to select specific flood events to establish and calibrate the SWMM model. By changing the impervious area of the two regions, hydrological parameters such as surface runoff and sensitivity under different scenarios can be obtained.&lt;/p&gt;&lt;p&gt;After model simulation, we will finally analyze the simulation results as follows: Firstly, the variation of runoff and flood peak with impervious area will be analyzed; Secondly, by comparing the simulation results of the two regions, the sensitivity of flood events to urbanization development will be evaluated; Finally, according to the predicted simulation results, the flood situation in the study area will be evaluated in the future years, which has a certain guiding significance for urban flood prevention.&lt;/p&gt;


2016 ◽  
Vol 8 (2) ◽  
pp. 135-139
Author(s):  
SA Labani ◽  
MZ Islam ◽  
ASMG Hafeez

A study was conducted to examine the socio-economic impact of Grameen Bank(GB) income generating loans on rural women in selected areas of Tangail district. The study was conducted to examine the impact of loan on the livelihood improvement of women borrowers. Sixty respondents were purposively selected from 3 villages namely Hemnagar, Volapara and Shimlapara of which 10 were engaged in farming, 21 were engaged in livestock rearing, 19 were engaged in petty business, 5 were engaged in tailoring and 5 were indirectly engaged in van/rickshaw pulling. Tabular and statistical analyses were applied for achieving the objectives. In the study area, higher proportions (55 percent) of women were middle aged and 93 percent were married. About 75 percent had signature ability, 18 and 7 percent studied up to primary and secondary level respectively. Average family size of the respondents was 5.36, average annual income and saving of the respondents were Tk. 65958 and 8770, respectively. Overall income and saving change by taking loan from GB were 36.04% and 68.69% respectively. There was remarkable increase in attitudes and opportunities of the respondents after joining the GB. The findings show that GB loan brought about positive impact on livelihood improvement of the borrowers.J. Environ. Sci. & Natural Resources, 8(2): 135-139 2015


There was a sudden increase in dengue affected people in Dhaka city during 2018 and 2019, considering the seriousness of the disease, this study attempted to investigate the socio-economic impact of dengue fever instead of its biological significance. The study considered a primary dataset of 235 affected and 235 unaffected participants from Dhaka city. The impact of dengue infection on the monthly expenditure of the patient was determined by the multiple linear regression models. The impact of Dengue on the human productivity of the respondents was assessed by another multiple linear regression model; the dependent variable absence (number of days absent from work) was applied as a proxy for measuring the productivity of the patient. Moreover, an important objective was to find out potential determinants of dengue in Dhaka city. Binary logistic regression applied for detecting the factors which were responsible for occurring dengue disease. The study found no significant association of family cost with dengue incidence but the loss of productivity turned out as statistically significant. People who lived alone were identified to experience the disease more, which might occur due to their insincerity about this disease. So, living alone persons need to increase their consciousness considering the seriousness of this disease. It was highly recommended by respondents to use mosquito repellent and net during sleeping, changing the water regularly from plant container, providing regular mosquito spray, and developing a drainage system in Dhaka city.


Oryx ◽  
2017 ◽  
Vol 53 (1) ◽  
pp. 109-116 ◽  
Author(s):  
José Benedicto Royuela ◽  
Sandra Hervías Parejo ◽  
Azucena de la Cruz ◽  
Pedro Geraldes ◽  
Luis T. Costa ◽  
...  

AbstractUsing the Safe Islands for Seabirds LIFE project as a case study, we assessed the socio-economic impact of a nature conservation project on the local community, focusing on the wealth created and the jobs supported directly and indirectly by the project. The Safe Islands for Seabirds project took place during 2009–2012, mainly on Corvo Island, the smallest and least populated island of Portugal's Azores Archipelago. To assess the impact of the project we used a combination of methods to analyse the project expenditure, the jobs created directly as a result of it, and, by means of multipliers, the incomes and jobs it supported indirectly. We estimate that during 2009–2012 direct expenditure of EUR 344,212.50 from the project increased the gross domestic product of the Azorean region by EUR 206,527.50. Apart from the 4.5 jobs created directly by the project, it also supported indirectly the equivalent of 1.5–2.5 full-time jobs. The project also provided the opportunity to preserve and promote natural amenities important for the quality of life of the local community. Our findings show that a nature conservation project can have positive economic impacts, and we recommend the creation of a standardized tool to calculate in a straightforward but accurate manner the socio-economic impacts of conservation projects. We also highlight the need to design projects that support local economies.


2020 ◽  
Vol 10 (12) ◽  
pp. 394
Author(s):  
Chiara Borelli ◽  
Alessandra Gigli ◽  
Giannino Melotti

In these times of global crisis caused by COVID-19, there is an urgent need to address the topic of nature-based experiences in education: the pandemic has strongly highlighted both the interdependence between human beings and nature, and the need for mending the dichotomic vision that keeps them separate. Experiential education in natural contexts within an ecological framework might have a strategic role in this crucial period to develop anthropologic, civic, and dialogic conscience (Morin, 2001). Through this study, CEFEO Research Center had the objective of investigating the socio-economic impact of COVID-19 on Italian nature-based programs in the educational, therapeutic, training, and leisure areas. From 28 May to 19 June 2020, an online questionnaire was distributed with the purpose of understanding the socio-economic impact of the pandemic on nature-based programs during the lockdown period and during the period of first reopening, and the related needs and new opportunities for the future. The results highlight a paradox: the COVID-19 crisis has caused more problems for a sector which was already suffering from a lack of funding and of social and institutional acknowledgment. Many agencies working in the field lost months of income and numerous working days, and they are uncertain about the future: they are having difficulties surviving in a moment when we need them more.


2021 ◽  
Vol 943 (1) ◽  
pp. 012010
Author(s):  
A Samsuddin ◽  
Z K Kaman ◽  
N Mat Husin

Abstract The disastrous events of land flooding prompt an urgency to flood risk management to counterpart this issue with the concept of flood damage divided into four types: direct, indirect, tangible, and intangible. This paper reviewed previous articles regarding flood risk management with a specific focus on methods used for socio-economic impact assessment towards ensuring a sustainable environment. The methodological approach can be sorted into four (4) main types group which are i) historical disaster statistic method, ii) index system method, iii) scenario simulation analysis, and iv) GIS-based approach. Among others, the integrated GIS-based approach becomes the most practical method in conducting socio-economic assessment for flood risk impact. As most of the socio-economic impact-based studies are conducted in western countries, this paper proposed the idea that for different types of countries such as the Asian countries, differences in topography, weather and seasons will lead to a different scale or possibly different types of socio-economic impact, which may require a new approach of assessing the impact. It is also proposed that any socioeconomic and environmental impact assessment needs to explicitly consider both direct and indirect impact. This is to ensure the approach used is holistic, valid, reliable, and more accurately reflect the real nature of the respective flood risk while the gap of the studies also can be identified.


Author(s):  
Nina Regina Prayoga ◽  
Reny Sukmawani ◽  
Ema Hilma Meilani

The Covid-19 pandemic has had a socio-economic impact in Indonesia, including broiler meat traders. Since the enactment of large-scale restrictions has triggered a lack of community activity outside, resulting in a decrease in sales volume and income at the Tipar Gede Warehouse Market, Sukabumi City. This study aims to determine the impact of COVID-19 on the decline in sales volume and income of broiler meat traders at the Tipar Gede Warehouse Market, Sukabumi City. This research was carried out using descriptive research with survey method research methods by describing the conditions or phenomena that occurred. From the research carried out, it was found that the impact of Covid-19 on sales volume before Covid-19 could be represented by 65%, while during Covid-19 there was a 35% decrease in sales volume and the impact of Covid-19 on the decline in income of broiler meat traders in Indonesia. The Tipar Gede Warehouse Market in Sukanumi City before Covid-19 was 60%, while during Covid-19 it was around 40%.


NeoBiota ◽  
2020 ◽  
Vol 62 ◽  
pp. 123-142
Author(s):  
Thomas Evans ◽  
Tim M. Blackburn ◽  
Jonathan M. Jeschke ◽  
Anna F. Probert ◽  
Sven Bacher

We use a recently proposed framework, the Socio-Economic Impact Classification for Alien Taxa (SEICAT) to undertake the first global assessment of the impacts of alien birds on human well-being. A review of the published literature and online resources was undertaken to collate information on the reported socio-economic impacts of 415 bird species with self-sustaining alien populations worldwide. These data were then categorised following the SEICAT guidelines. Impact data were found for 57 (14%) of the 415 alien bird species in this study. All but two of these species were found to have minor impacts on human well-being. The most significant threat to human well-being posed by alien birds may be associated with their impacts on aviation safety. About two-thirds of the impact data found described agricultural impacts. No data were found describing disease transmission impacts on humans. We lack data for developing regions of the world: this is of concern as alien species can threaten livelihoods in developing countries, particularly by affecting agricultural production and hence food security. Most assessments were allocated a ‘Low’ confidence score. This may be because SEICAT is a new framework, requiring data on the way in which alien species affect human well-being, as measured by changes to human activities: even where we do have data describing an alien bird impact, information on how profoundly this impact affects people’s activities is currently rarely available.


2021 ◽  
Vol 48 (4) ◽  
pp. 543-556
Author(s):  
David Tanoh Aduhene ◽  
Eric Osei-Assibey

PurposeThe world's economies are on their knees following the negative impact of the coronavirus pandemic over the past 8 months. Growing number of researches has been conducted on the impact of COVID-19 pandemic on developed countries with little attention on developing countries, who are still grappling with the negative impact of the coronavirus. The rationale for this study is to assess the socio-economic impact of COVID-19 on Ghana's economy and government response to the pandemic as well as policy options to revive the ailing economy.Design/methodology/approachThis study explored the socio-economic impact of the coronavirus on Ghana's economy using a discourse analysis with data from various secondary sources to analyze the impact of the pandemic from the Ghanaian perspective.FindingsThe findings from the discourse analysis revealed that the coronavirus pandemic has negatively impacted on the socio-economic situation of the citizens of Ghana. Whiles an estimated 42,000 people lost their jobs in the first two months of the pandemic in Ghana, tourist attraction sector of the country alone lost $171 million dollars in the past three months due to the partial lockdown and closure of tourism and hospitality centers in the country. The study revealed that Ghana's healthcare system has been overwhelmed by the number of increasing cases in the country to extent of making use of temporary structures as isolation and treatment centers of the pandemic. The study revealed that Ghana may convert these challenges posed by the COVID-19 pandemic into prospects and opportunities by investing massively in the health sector and creating support for the SMEs which creates massive employment for many Ghanaians.Research limitations/implicationsThis study focuses on the impact of the COVID-19 on Ghana's economy and how the pandemic has negatively affected the country. The study is an exploratory study that makes use of secondary data. However, conducting a study with primary data sources from specific communities or regions in the country may not produce the same results. The results from the primary level or community level may be different from the general results obtained from the study. In future it is expected that the study focuses specifically on the extent of the coronavirus pandemic on Ghana's fiscal deficit which seems to have ballooned in recent times.Originality/valueThe study is the first of its kind to extensively explore the socio-economic impact of the COVID-19 pandemic on the Ghanaian economy. The novelty of this paper is that it recognizes governments response to the pandemic and proposes three practical measures adopted to put the country's economy back on its feet through survive, revive and ensuring growth in all sectors of the economy.


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