Abstract：
:The accurate predictions of ground ozone concentrations are required for proper management, control, and making public warning strategies. Due to the difficulties in handling phenomenological models that are based on complex chemical reactions of ozone production, neural network models gained popularity in the last decade. These models also have some limitations due to problems of overfitting, local minima, and tuning of network parameters. In this study, the predictions of daily maximum ozone concentrations are attempted using support vector machines (SVMs). The comparison between the accuracy of SVM and neural network predictions is performed to evaluate their performance. For this, the daily maximum ozone concentration data observed during 2002-2004 at a site in Delhi is utilized. The models are developed using the available meteorological parameters. The results indicated the promising performance of SVM over neural networks in predicting daily maximum ozone concentrations.
journal_name
Environ Monit Assessjournal_title
Environmental monitoring and assessmentauthors
Chelani ABdoi
10.1007/s10661-009-0785-0subject
Has Abstractpub_date
2010-03-01 00:00:00pages
169-76issue
1-4eissn
0167-6369issn
1573-2959journal_volume
162pub_type
杂志文章abstract：:Achieving better monitoring and radiation risk assessment is among the main issues in environmental studies. In this regard, natural radioactivity measurements in sediments can provide useful information about the environmental transport mechanism and about the sources of radionuclides. Anzali wetland, as the study ar...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-019-7516-y
更新日期：2019-05-22 00:00:00
abstract：:Spatial distribution of activity concentrations of (137)Cs, (90)Sr, and (239,240)Pu in the top layer of undisturbed meadow soils was compared between two regional transects across Lithuania: one in the SW region, more affected by the Chernobyl radioactive fallout, and the other in the NE region. Radiochemical, γ-, α-,...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-015-4491-9
更新日期：2015-05-01 00:00:00
abstract：:In birds, concentrations of heavy metal contaminants were associated with their diet and environmental quality. This study presents concentrations of lead and cadmium in feathers and the relationship between concentrations in the feather and stomach content of three species of heron and egret chicks. Cadmium concentra...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-013-3540-5
更新日期：2014-04-01 00:00:00
abstract：:Gill anomalies in two fish species (Geophagus brasiliensis and Astyanax bimaculatus) were compared among three freshwater systems with different water quality: one eutrophic river, one eutrophic reservoir, and one oligotrophic reservoir. The raised hypotheses are that reservoirs with low water quality (eutrophic) have...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-011-2358-2
更新日期：2012-09-01 00:00:00
abstract：:The Etili neighborhood in Can County (northwestern Turkey) has large reserves of coal and has been the site of many small- to medium-scale mining operations since the 1980s. Some of these have ceased working while others continue to operate. Once activities cease, the mining facilities and fields are usually abandoned...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-016-5462-5
更新日期：2016-08-01 00:00:00
abstract：:Exposure to ambient particulate matter (PM) has been associated with a number of adverse health effects. Increasing studies have suggested that such adverse health effects may derive from oxidative stress, initiated by the formation of reactive oxygen species (ROS) within affected cells. The study aimed to assess phys...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-009-1199-8
更新日期：2010-10-01 00:00:00
abstract：:The availability of Landsat data allows improving the monitoring and assessment of large-scale areas with land cover changes in rapid developing regions. Thus, we pretend to show a combined methodology to assess land cover changes (LCCs) in the Hamoun Wetland region (Iran) over a period of 30-year (1987-2016) and to q...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-018-6726-z
更新日期：2018-05-23 00:00:00
abstract：:Impact of agricultural activities on groundwater can be determined from the concentration of nutrients present in groundwater. This study was carried out with the aim to assess the minor ions content of groundwater and to identify its sources, spatial, and seasonal variations in a part of the Cauvery River basin, sout...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-017-6006-3
更新日期：2017-07-01 00:00:00
abstract：:Spatial and temporal variation of suspended particulate matter was measured in Ibadan, Nigeria during the raining and dry months of 2013 and 2014, respectively. Six different locations were considered, reflecting city-spread, population density, lifestyle, and vehicular- and industrial-related activities. Elemental ch...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-015-4755-4
更新日期：2015-08-01 00:00:00
abstract：:Formation of secondary minerals and Cs mobility in Hanford sediments were investigated under conditions similar to the Hanford tank leak in a dynamic flow system at 50 degrees C. The objectives were to (1) examine the nature and locations of secondary mineral phases precipitated in the sediments and (2) quantify the a...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-009-1166-4
更新日期：2010-10-01 00:00:00
abstract：:This study explores the associations of pesticide occurrence in groundwater to geological characteristics of the monitoring points (MPs) contributing area. Pesticide analyses were undertaken during a 2-year groundwater monitoring campaign which generated 845 samples. MCPA and mecoprop were the most frequently detected...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-014-3970-8
更新日期：2014-11-01 00:00:00
abstract：:Because of over-exploitation of sturgeon for caviar production, they have been listed worldwide in annex II of the Convention on International Trade in Endangered Species regulations; so caviar production using aquaculture is increasingly seen as a feasible way to reduce overfishing. The accumulation of the nonessenti...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-013-3307-z
更新日期：2013-12-01 00:00:00
abstract：:Epicoccum nigrum (strain LQRA39-P) was isolated from sediments collected in Chilean Patagonian fjords using microscopy and molecular techniques. We analyzed adaptive responses of cell wall morphology to salinity, temperature, and pH in order to explain the ability of E. nigrum to co-inhabit both marine and freshwater ...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-018-7166-5
更新日期：2018-12-28 00:00:00
abstract：:We assessed the mudskipper, Periphthalmus papilio inhabiting the coast line of the Lagos lagoon, Gulf of Guinea, to determine suitable biomarkers of stress due to its current status as a polluted water body. The gill and liver samples showed evidence of some activities of antioxidative stress enzymes including catalas...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-015-4331-y
更新日期：2015-03-01 00:00:00
abstract：:The adsorption of metals from aqueous solutions of Pb(2+), Zn(2+) and Mg(2+) on naturally occurring pyrolusite have been studied. The chemical stability of the pyrolusite has been determined in NaOH, H2SO4, HNO3, HCl, NaCl and NK4Cl solutions of various concentrations. Adsorption of the metal ions followed the order P...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/BF00547124
更新日期：1995-10-01 00:00:00
abstract：:Samples of Jerusalem limestones were exposed to high levels of common air pollutants (SO2, NO) in the presence and absence of hydrocarbon, water vapor and ultra-violet light. After exposure, the outer layers were shaved off and analyzed for sulfate and nitrate. The results revealed that even after one day of exposure ...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/BF00394186
更新日期：1989-05-01 00:00:00
abstract：:It is essential to select the optimal pressure gauge location for effective management and maintenance of water distribution systems. This study proposes an objective and quantified standard for selecting the optimal pressure gauge location by defining the pressure change at other nodes as a result of demand change at...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-011-2500-1
更新日期：2012-12-01 00:00:00
abstract：:Hydrochemical processes have a great influence on the groundwater quality especially in arid regions where groundwater is the single most important source of water supply. The present study was carried out in the Wadi Ad Dawasir region of Saudi Arabia. The objective of this study was to determine the processes influen...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-019-7597-7
更新日期：2019-06-24 00:00:00
abstract：:Organotin compounds are applied in several industrial reactions and can present antifungal and antibacterial activities. Incorrect handling and storage practices of biodiesel and diesel-biodiesel blends can lead to microbial development, impacting its final quality. Concerning this problem, this work investigated the ...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-020-08744-x
更新日期：2020-12-01 00:00:00
abstract：:Analyzing the spatial extent and distribution of forest fires is essential for sustainable forest resource management. There is no comprehensive data existing on forest fires on a regular basis in Biosphere Reserves of India. The present work have been carried out to locate and estimate the spatial extent of forest bu...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-014-3619-7
更新日期：2014-05-01 00:00:00
abstract：:The water quality index (WQI) is an important tool for water resource management and planning. However, it has major disadvantages: the generation of chemical waste, is costly, and time-consuming. In order to overcome these drawbacks, we propose to simplify this index determination by replacing traditional analytical ...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-018-6702-7
更新日期：2018-05-02 00:00:00
abstract：:Achieving adequate and desirable forest regeneration is necessary for maintaining native tree species and forest composition. Advance tree seedling and sapling regeneration is the basis of the next stand and serves as an indicator of future composition. The Pennsylvania Regeneration Study was implemented statewide to ...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-011-2365-3
更新日期：2012-09-01 00:00:00
abstract：:Studies were conducted to describe a method for the characterisation of natural and waste waters using plant seed germination as a technique for toxicity testing. Maize seeds were found to be more sensitive to differences in water quality than cowpea seeds and also showed more consistency in results. Trials conducted ...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/BF00394974
更新日期：1991-08-01 00:00:00
abstract：:The objective of this work tends to promote methane content in biogas and evaluate sulfur dioxide emission from direct biogas combustion without desulfurization. Analytical results of biogas combustion showed that combustion of un-desulfurized biogas exhausted more than 92% of SO₂ (P < 0.01). In the meantime, more tha...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-014-4109-7
更新日期：2015-01-01 00:00:00
abstract：:All major mining activity particularly opencast mining contributes to the problem of suspended particulate matter (SPM) directly or indirectly. Therefore, assessment and prediction are required to prevent and minimize the deterioration of SPM due to various opencast mining operations. Determination of emission rate of...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1023/a:1021680506462
更新日期：2003-02-01 00:00:00
abstract：:In this study, a new analytical strategy was developed to determine trace cadmium in aqueous samples with high sensitivity and accuracy. A combination of magnetic nickel nanoparticles (Ni-MNPs) based dispersive solid-phase extraction (DSPE) and flame atomic absorption spectrometry fitted with a slotted quartz tube (SQ...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-020-08548-z
更新日期：2020-08-15 00:00:00
abstract：:Air pollution is threat to the lives of people living in big cities of Pakistan. In Lahore 1,250 people die annually because of air pollution. Mass transit system that can be put forth as solution to urban air pollution is contingent with right choice of system and its affiliation with motorized vehicles and nature of...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-007-9717-z
更新日期：2008-02-01 00:00:00
abstract：:Many water quality monitoring programs quantify Escherichia coli, an indicator of fecal contamination and potential sewage pollution. However, interpretation of E. coli data can be complex due to abiotic factors that influence its growth and mortality. The goal of this study was to quantify the variability of E. coli ...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-019-7930-1
更新日期：2019-11-13 00:00:00
abstract：:The mining activities in the Lepanto Cu-Au Mine which is situated within the Mankayan Mineral District in the Philippines have exposed the arsenic (As)-rich copper (Cu)-gold (Au) and polymetallic ores to surface conditions. Cu and As dispersal into nearby soils and waters could pose health hazards to the natural ecosy...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-019-7278-6
更新日期：2019-02-26 00:00:00
abstract：:Present study was conducted in rapidly growing city Islamabad, and surface soils were collected from three major land cover types viz., built-up, drain side, and green areas. A total of seven physicochemical parameters and 11 metals were determined in surface soils. Factor analysis based on principal component analysi...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-010-1314-x
更新日期：2011-01-01 00:00:00
