Search results
Title Predicting Earth-Vas2 parameters of coastal plain sand aquifers using artificial neural Network(s), in the Calabar region of Nigeria Author info Emmanuel I. Akaerue ... [et al.] Author Akaerue Emmanuel I. (35%)
Co-authors Onwuka Obialo S.
George Anthony M.
Ekwok Stephen Eguba
Alarifi Saad S.
Andráš Peter 1953- (30%) UMBFP01 - Katedra geografie a geológie
Eldosouky Ahmed M.
Source document Journal of African Earth Sciences. No. 209 (2024), pp. 1-12. - Oxford : Elsevier Ltd., 2024 Keywords hydrogeológia - hydrogeology korelačné koeficienty Headings Geogr. Nigéria Language English Country Great Britian Annotation This study employs artificial neural networks (ANNs), specifically the Nonlinear Autoregressive with External Input (NARX) model as an ANN add-on for Matlab, to forecast Earth-Vas2 parameters. The model leverages a time series approach, with the Earth-Vas2 index (y(t)) as the predictive target and various parameters (eleva tions, static water level, aquifer material thickness, transmissivity, hydraulic conductivity, specific capacity, vadose media) denoted as x(t) to facilitate accurate predictions. The Levenberg-Marquardt training algorithm was applied to the ANN using geo-hydraulic data from 56 boreholes for training and 24 boreholes for validation and testing. Validation metrics such as mean square error (MSE), correlation coefficient (R), and coefficient of determination (R2 ) were utilized. The results indicate a high degree of accuracy, with low MSE values of 0.0171 (training), 0.0087 (validation), and 0.0327 (testing). Strong correlation coefficients (R) of 0.9882, 0.9898, and 0.9844, along with high R2 values (97.66%), emphasize the robustness of the ANN model. Actual and predicted Earth-Vas2 values exhibit a similar pattern, affirming the model’s effectiveness. The R-value of 0.9882 signifies a strong positive correlation within the model, validating its ability to capture variable interactions in fluid migration control. Geo-hydraulic Earth-Vas2 maps identify areas with varying migration efficiency, guiding groundwater management. The study emphasizes routine subsurface assessments for crucial data in environ mental planning and risk reduction in industrial and municipal activities. This method provides cost-effective estimation of key geo-hydraulic properties for aquifer vulnerability assessments, with far-reaching implica tions for groundwater management, environmental protection, and land use planning. URL Link na plný text Public work category ADC No. of Archival Copy 54309 Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika 
article
Title Život medzi riekami Subtitle monografia krajinného manažmentu Medzibodrožia Issue data Miskolc : Univerzita Miskolc , 2008. - 215 s. ISBN 978-963-0642-651 Keywords príroda - nature hydrogeológia - hydrogeology pedológia - pedology flóra - flora manažment krajiny Language Slovak Country Hungary systematics 551 Public work category FAI Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References (1) - PUBLIKAČNÁ ČINNOSŤ 
book
Title Aplikácia ľahkých geofyzikálnych metód pri hydrogeologickom prieskume na príklade vybraných tokov juhozápadných svahov Ďumbierskych Tatier Author info Karol Weis Author Weis Karol 1972- UMBFP09 - Katedra biológie a ekológie
Source document Krajina, história a tradície čipkárskych obcí Horehronia. S. 27-35. - Banská Bystrica : Ústav vedy a výskumu Univerzity Mateja Bela v Banskej Bystrici, 2007 / Hronček Pavel 1973- ; Maliniak Pavol 1979- ; Alberty Július 1925-2019 Note Bibl.: s. 35 Keywords geofyzika hydrogeológia - hydrogeology sedimenty - sediments Headings Geogr. Starohorské vrchy (Slovensko : pohorie) Language Slovak Country Slovak Republic systematics 553 Annotation Práca na príklade výsledkov riešenia hydrologickej a hydrogeologickej úlohy vymapovať skryté prestupy podzemných vôd do vybraných tokov predstavuje možnosti využitia neinvazívnych ľahkých geofyzikálnych metód. Pomocou metódy VES AB600 a VES AB1000 spolu s termometrickými meraniami a meraním konduktivity rieši okrem identifikácie prístupov aj otázky spojené s určením mocností kvartérnych a terciérnych sedimentov Public work category AED No. of Archival Copy 11738 Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ 
unrecognised