scholarly journals ESTIMATION OF HOUSING VACANCY DISTRIBUTIONS: BASIC BAYESIAN APPROACH USING UTILITY DATA

2016 ◽  
Vol XLI-B2 ◽  
pp. 709-713 ◽  
Author(s):  
K. Kumagai ◽  
Y. Matsuda ◽  
Y. Ono
Keyword(s):  
Bayesian Approach ◽  
Local Population ◽  
Geographical Data ◽  
Quality Of Water ◽  
Fine Spatial Resolution ◽  
Temporal Intervals ◽  
Housing Vacancy

In this study, we analyze the quality of water hydrant data for estimating housing vacancies based on their spatial relationships with the other geographical data that we consider are correlated with such vacancies. We compare with in-situ vacant house data in several small districts, thus verifying the applicability of the water hydrant data to the detection of vacant houses. Through applying Bayesian approach, we apply the water hydrant data and other geographical data to repeatedly Bayesian updating for the classification of vacant / no vacant houses. We discuss the results of this classification using the temporal intervals associated with turning off metering, fluctuations in local population density, the densities of water hydrants as indicators of vacancies and several other geographical data. We also conduct the feasibility study on visualisation for the estimation results of housing vacancy distributions derived from the fine spatial resolution data.

scholarly journals ESTIMATION OF HOUSING VACANCY DISTRIBUTIONS: BASIC BAYESIAN APPROACH USING UTILITY DATA

2016 ◽  
Vol XLI-B2 ◽  
pp. 709-713
Author(s):  
K. Kumagai ◽  
Y. Matsuda ◽  
Y. Ono
Keyword(s):  
Bayesian Approach ◽  
Local Population ◽  
Geographical Data ◽  
Quality Of Water ◽  
Fine Spatial Resolution ◽  
Temporal Intervals ◽  
Housing Vacancy

In this study, we analyze the quality of water hydrant data for estimating housing vacancies based on their spatial relationships with the other geographical data that we consider are correlated with such vacancies. We compare with in-situ vacant house data in several small districts, thus verifying the applicability of the water hydrant data to the detection of vacant houses. Through applying Bayesian approach, we apply the water hydrant data and other geographical data to repeatedly Bayesian updating for the classification of vacant / no vacant houses. We discuss the results of this classification using the temporal intervals associated with turning off metering, fluctuations in local population density, the densities of water hydrants as indicators of vacancies and several other geographical data. We also conduct the feasibility study on visualisation for the estimation results of housing vacancy distributions derived from the fine spatial resolution data.

Seismic Vulnerability of Buried Water Pipes

2012 ◽  
Vol 518-523 ◽  
pp. 3740-3743 ◽  
Author(s):  
Halfaya Fatma Zohra ◽  
Mahmoud Bensaibi ◽  
Davenne Luc
Keyword(s):  
Seismic Vulnerability ◽  
Large Degree ◽  
Vulnerability Index ◽  
Water Network ◽  
Buried Pipelines ◽  
Sanitation Services ◽  
Quality Of Water ◽  
Good Classification

In south hemisphere regions mortality rates are closely related to infectious diseases that, to a large degree, depend on the quality of water consumed and on access to adequate sanitation services. A special attention must be paid to water quality particularly in case of an earthquake. Damage in this sector depends not only on the intensity of the disaster, but also on the vulnerability of buried pipelines. In this work, this vulnerability is studied through the use of a developed vulnerability index. This one allows a good classification and description of the seismic quality of the pipes taking into account the main parameters governing their vulnerability. A program including all informations that might be used was subsequently developed. The method was applied on the water network of Blida, a city in suburb of Algiers. The results obtained show that the established classification confirms the observed information in situ.

scholarly journals Relações entre Condições Ambientais e Doenças de Veiculação Hídrica em Áreas do Assentamento Rural Serra Grande, Vitória de Santo Antão, PE, Brasil (Relationships between environmental conditions and hydro term placement diseases in Rural Settlement ...)

2016 ◽  
Vol 9 (6) ◽  
pp. 1677
Author(s):  
Maria Tereza Duarte Dutra ◽  
Juliana Lemos Da Silva ◽  
Cláudia Ricardo Oliveira ◽  
Marília Regina Costa Castro Lyra ◽  
Suzana Maria Gico Lima Montenegro
Keyword(s):  
Water Quality ◽  
Environmental Conditions ◽  
Local Population ◽  
Poor Quality ◽  
Quality Parameters ◽  
Rural Settlement ◽  
Human Consumption ◽  
Social Actors ◽  
Quality Of Water

A má qualidade dos corpos de água exerce influência direta sobre a saúde da sociedade, podendo causar doenças de veiculação hídrica, que levam a morte milhões de pessoas no mundo. Neste cenário, o presente estudo objetivou identificar as relações existentes entre condições ambientais e doenças de veiculação hídrica no Assentamento Rural Serra Grande, situado na sub bacia hidrográfica do Riacho Natuba, no município de Vitória de Santo Antão, em Pernambuco. Foram escolhidas seis nascentes, fazendo-se medições de parâmetros de qualidade de água, comparando-se os resultados das análises com os padrões estabelecidos pela Resolução Conama Nº 357/05 e Portaria do Ministério da Saúde Nº 2914/11. Para identificar a ocorrência de doenças de veiculação hídrica no assentamento procedeu-se a aplicação de questionários junto à comunidade local, representantes do Posto de Saúde e da Secretaria de Saúde Municipal, abordando aspectos sobre a incidência dessas doenças e respectivos programas de saúde implementados. Os resultados obtidos mostraram que as nascentes representavam a principal fonte de água para o consumo doméstico, a irrigação e a dessedentação animal. No entanto, as análises de qualidade de água apontaram que a mesma não apresentava condições apropriadas ao consumo humano direto, requerendo prévio tratamento. Em relação ao perfil de ocorrência das doenças de veiculação hídrica, constatou-se que as verminoses e protozooses são as doenças que mais acometem a população.   A B S T R A C T The poor quality of water bodies shall exercise direct influence on the health of society, causing hydro term placement diseases leading to death millions of people worldwide. In this scenario, the present study aimed to identify the relationship between environmental conditions and hydro term placement diseases in the Rural Settlement Serra Grande, located in the Sub-basin of the Natuba rivulet, in the municipality of Vitória de Santo Antão, Pernmbuco State, Brazil. Six springs  were chosen for sample collections and determination of  water quality parameters, comparing the results with the quality standards established by CONAMA ( Brazilian National Environmental Council) Resolution Nº 357/05 and Ordinance of the Ministry of Health (Brazil) No. 2914/11. Questionnaires were applied to local social actors: community, health and Municipal Health Secretariat, addressing aspects of water diseases and health programs implemented. The results obtained showed that the springs were the main source of water for domestic consumption, irrigation and animal watering in the studied area. However, the water quality analyses showed that these springs  do not show appropriate sanitary conditions to direct human consumption, requiring treatment. In relation to the profile of hydro term placement diseases occurrence, it was observed that the worms and protozooses are the diseases that most affected the local population. Keywords: Management of water resources, quality of the water, health and environment.   

The Research of Fluorescence In Situ Hybridization Approach Applied in Denitrification Bacteria in Metal Membrane Bioreactor

2013 ◽  
Vol 864-867 ◽  
pp. 1490-1493
Author(s):  
Pan Zhang ◽  
Yuan Hua Xie
Keyword(s):  
Population Structure ◽  
In Situ Hybridization ◽  
Nitrogen Removal ◽  
Membrane Bioreactor ◽  
Metal Membrane ◽  
Quality Of Water ◽  
Preliminary Study ◽  
Optimized Conditions

To research the composition and proportion of the denitrying bacterium in denitrification tank and increase the nitrogen removals rate. With the purpose of explore the curve between the amount of different denitrying bacterium and the quality of water treating, then find out the optimum of the species of nitrogen removal bacteria and the amount of the specific type of microorganism in the denitrification tank of metal membrane bioreactor at the optimized conditions of the water treating effects. The fluorescence in situ hybridization (FISH) approach is applied in this research, to set a preliminary study on the space-time character of denitrification bacteria population structure in denitrifical tank.

scholarly journals In Situ Observations on the Crack Morphology in the Ancient Timber Beams

2021 ◽  
Vol 13 (1) ◽  
pp. 439
Author(s):  
Nicola Ruggieri
Keyword(s):  
Essential Element ◽  
Sustainable Operation ◽  
Crack Morphology ◽  
Depth Analysis ◽  
Type Of Failure ◽  
Timber Beams

The conservation of ancient structures is, in the construction panorama, a highly eco-sustainable operation. In fact, it provides for a very limited consumption of resources. This article provides an in-depth analysis of ancient wooden material, an essential element for drawing up correct conservation interventions. Ancient timber beams have a peculiar morphology of failure dependent on many factors, among which are the species of wood, the quality of the material-knots, presence of fissures caused by shrinkage (checks), direction of the grain, and environmental conditions such as temperature and humidity. In addition, it is linked to load conditions and static configuration. This paper presents a case study of failed ancient timber members still in place and describes the type of failure as well as the origin and propagation of the cracks. The objective is to provide a classification of the causes and of the effects and their evolution, useful to practitioners and to those who have to make decisions on the timber structures conservation.

scholarly journals Climatic variability in the Sine-Saloum basin and its impacts on water resources: case of the Sob and Diohine watersheds in the region of Niakhar

2020 ◽  
Vol 383 ◽  
pp. 391-399
Author(s):  
Waly Faye ◽  
Awa Niang Fall ◽  
Didier Orange ◽  
Frédéric Do ◽  
Olivier Roupsard ◽  
...  
Keyword(s):  
Water Resources ◽  
Climatic Variability ◽  
Local Population ◽  
Dry Period ◽  
Piezometric Level ◽  
Access Problems ◽  
Annual Time ◽  
Rainfall Deficits

Abstract. Local peoples from Niakhar in the Senegalese peanut basin highlight a dramatic increase of water access problems due to marked rainfall deficits and salinization of surface and ground water resources. The chemical quality of groundwaters is often critical because of the salinization process, whereas water surfaces, which should be used in such situations, are up early. More and more, lowlands and rivers beds are pervaded by salt crusts. Then the salinization of wells is increasing, leading to the extension of tans (salty of acidified soils). To study the impacts of climatic pejoration on the agroecosystems and on the living conditions of the populations, we carried out the analysis of the time series of the precipitations with daily and annual time steps from 1950 to 2015 on 6 meteorological stations, in situ measurements on 78 wells for an area of 311 km2, as well as local population interviews and field observation. The results confirm an important climatic break in the region in 1970. The long dry period, from 1970 to 2009, has increased the annual rain variability, decreased the number of rainy days per year. We confirm a real and large extension of well salinization, and salt crusting in the lowlands and the riverbeds. From the local people, it seems the process of degradation of the aquifers continues to progress from a large tidal event in 1984. The rainfall increase noted in the last decade does not seem to be enough to reverse the trend and to ensure both the rise of the piezometric level of the aquifers and the desalinization of surface and ground waters.

Physico-Chemical Analysis of Fish Pond Water in Candaba, Pampanga, Philippines

2017 ◽  
Vol 11 (1) ◽  
Keyword(s):  
Pond Water ◽  
Fish Pond ◽  
Fish Production ◽  
Fish Ponds ◽  
Chemical Parameters ◽  
Ph Values ◽  
Quality Of Water ◽  
Physico Chemical

The study of physico-chemical parameters in fish ponds in Candaba, Pampanga was conducted to determine the quality of water for fish pond from July to August, 2014. Water samples were tested in-situ using probe meter: Thermo Orion Model A920. The results showed variation in the observed parameters at the different sampling stations and two sampling dates. Temperature ranged from 29±16.74 to 35.23±1.01˚C. pH values were 8.70±5.02 to 9.57±1.11. Dissolved oxygen values were 5.20±3 to 7.57±0.77mg/l. Electrical conductivity ranged from 220±0.01 to 489±0.57µS/cm. The values for temperature and DO were higher than accepted values for fish culture while those of other parameters favored for good fish production. The observations in this study suggest that fish production in some fish ponds of Candaba, Pampanga could be practiced without adverse effects posed by the quality of water.

scholarly journals HYDROGEOCHEMISTRY FOR THE ASSESSMENT OF GROUNDWATER QUALITY OF SPRINGS ON ANDROS: AN ISLAND OF THE CYCLADES COMPLEX, GREECE

2017 ◽  
Vol 50 (2) ◽  
pp. 691
Author(s):  
F. Filippidis ◽  
G. Stamatis ◽  
I. Mantaloufa
Keyword(s):  
Carbonic Acid ◽  
Major Ions ◽  
Physicochemical Analysis ◽  
Quality Of Water ◽  
Groundwater Samples ◽  
Two Samples ◽  
Solute Acquisition ◽  
Acquisition Processes

The paper presents the results of the physicochemical parameters of the springs of Andros which were studied to evaluate the chemistry of the major ions and solute acquisition processes, which control the chemical composition and the suitability of the quality of water for drinking use. Forty two samples were taken for physicochemical analysis almost at the end of the summer period, in September 2014. The Piper plot was used for the hydrogeochemical classification of groundwater which also indicated that the majority of groundwater samples belong to the Ca-Na-HCO3-Cl type. According to the Durov plot the majority of samples, can be positioned in field 2 in which a process of cation exchange is in progress. Also, the HCO3 /(HCO3 +SO4) ratio indicates a weathering process from carbonic acid. In general, the majority of samples can be characterized as potable.

scholarly journals IDENTIFICATION AND CLASSIFICATION OF URBAN PLANNING CONFLICTS IN THE USE OF WATER RESOURCES IN BELGOROD

2021 ◽  
Vol 6 (12) ◽  
pp. 54-62
Author(s):  
M. Per'kova ◽  
A. Dubino
Keyword(s):  
Water Resources ◽  
Urban Planning ◽  
Living Environment ◽  
Hierarchical Level ◽  
Significant Deterioration ◽  
Quality Of Water ◽  
High Level ◽  
The City

Sustainable development of the territory is impossible without balanced processes of anthropogenic human activity and rational use of natural resources. The problem of sufficiency and quality of water resources is relevant for the city of Belgorod. For 2021, the Belgorod region is limited by the resources of local surface and underground wastewater, with a fairly high level of municipal, agricultural and industrial consumers. The relevance of this work also lies in the increase in anthropogenic load on the natural framework, which entails a significant deterioration in the quality of surface and groundwater. In this regard, urban planning conflicts arise, which have an impact on the development of the city territory and the quality of the living environment. The research examines urban planning conflicts in the use of water resources in Belgorod. The causes of urban planning conflicts in relation to riverine territories and available water resources have been identified. The identified regulatory, property, land use, transport, social and functional urban planning conflicts are classified according to the hierarchical level, by duration, by the method of occurrence, by type of location, by the nature of manifestation. The introduction of water-saving design into the urban planning practice of the city of Belgorod is justified.

scholarly journals Percepção ambiental quanto a qualidade da água utilizada na vila histórica de Caraíva, Porto Seguro – BA

2021 ◽  
Vol 14 (2) ◽  
pp. 847
Author(s):  
Joscélia Monteiro Santos de Brito ◽  
Gabriela Narezi ◽  
Paulo Dimas Rocha de Menezes ◽  
Rodrigo Antonio Ceschini Sussmann ◽  
Jaílson Santos de Novais ◽  
...  
Keyword(s):  
Local Population ◽  
Water Source ◽  
Well Being ◽  
Environmental Perception ◽  
Chi Square ◽  
Public Authorities ◽  
High Adhesion ◽  
Quality Of Water ◽  
Chi Square Test

O saneamento ambiental é instrumento essencial para a manutenção da qualidade ambiental, bem-estar e saúde humana. O estudo da percepção ambiental pode fornecer instrumentos para superar impasses relacionados a essa temática, pois proporciona uma tomada de consciência das problemáticas ligadas ao ambiente vivido. Deste modo, o objetivo desse trabalho foi analisar a percepção ambiental dos moradores da vila histórica de Caraíva, Porto Seguro-BA quanto a qualidade da água utilizada, impactos na saúde, responsabilidades e expectativas para melhorias, na perspectiva de contribuir com informações que possam subsidiar ações que propiciem melhores condições de vida para a população local. Para isso, foram realizadas 77 entrevistas através de roteiro estruturado com questões abertas e fechadas e observações em campo entre novembro de 2019 e março de 2020. Os dados qualitativos foram interpretados e analisados através da técnica do Discurso do Sujeito Coletivo (DSC). Com auxílio do software estatístico RStudio, os dados foram submetidos ao teste qui-quadrado para verificar se há relação de dependência entre variáveis sociodemográficas e resultados qualitativos. Foi constatado que a população depende acentuadamente da água dos poços rasos individuais, sendo esta fonte mais utilizada que a encanada da rede pública. A insegurança quanto a qualidade da água reflete na alta adesão por água mineral envasada. A escolaridade foi o fator de maior peso quanto a percepção de que água imprópria possa colocar a saúde em risco. Os entrevistados reconhecem a responsabilidade do poder público tanto para a manutenção dos serviços de fornecimento da água, quanto pela conservação da sua qualidade.    Enviromental perception regarding the quality of the water used in the historic village of Caraíva, Porto Seguro - BAA B S T R A C TEnvironmental sanitation represents an essential tool for maintaining environmental quality, well-being, and human health. The study of environmental perception, on the other hand, can provide instruments to overcome impasses related to this theme by providing an awareness of the problems related to the lived environment. This work aims to analyze the environmental perception of the historic village of Caraíva residents, in Porto Seguro, state of Bahia, Brazil regarding the quality of water used, health impacts, responsibilities, and expectations for improvements, It can also contribute with information to support actions that collaborate to provide better living conditions for the local population. For this purpose, 77 interviews were conducted through a structured script with open and closed questions and field observation between November 2019 and March 2020. Qualitative data were interpreted and through the technique of the Collective Subject Discourse (DSC). With the RStudio statistical software aid, the chi-square test was applied in the data to verify a dependency relationship between sociodemographic variables and qualitative results. According to the results, the population depends heavily on wells' water, and this water source is used more than a piped one. The insecurity regarding the water quality is reflected in the high adhesion to bottled mineral water. Schooling was the most significant factor in the perception that filtered water can put health at risk. Respondents recognize the public authorities' responsibility for maintaining water supply services and conserving their quality.Keywords: water resources management, environmental health, environmental impacts, environmental sanitation.

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