Zeki DOĞAN, Hamza YALÇIN, İbrahim YENİGÜN, A. Volkan BİLGİLİ

Kısmi En Küçük Kareler Yapısal Eşitlik Modelinin Yeraltı Suyu KalitesininDeğerlendirilmesinde Kullanımı

Bu araştırmada su kalitesi ikinci nesil çok değişkenli bir istatistik metodu olan Kısmı En Küçük Kareler YapısalEşitlik Modeli (KEKK-YEM) kullanılarak incelenmiştir. KEKK-YEM gözlenen değişkenlerden yola çıkıp doğ rudan gözlemlenemeyen (latent) değişkenler arasındaki ilişkileri açıklamaya çalışır. KEKK – YEM modelindekullanılan gözlenen su kalitesi faktörleri pH, TDS katyonlar ($Mg^{2+}$, $Na^+$ )ve anyonlar ($HCO_3^-$ , $Cl^-$ ve $SO_4^+$ ). Çalış mada kullanılan KEKK-YEM modeli iki aşamada değerlendirilmiştir; ölçüm modelinin uygunluğu farklı uyumindisleri ile birinci aşamada değerlendirildikten sonra ikinci aşamada yapısal model değerlendirilmiştir. YEM mo del sonuçlarına göre, su kalitesi üzerinde katyonların (γ=0.598, p

The Use of Partial Least Squares Structural Equation Model in the Evaluation of Groundwater Quality

In this study, water quality was analyzed using the Partial Least Squares Structural Equation Model (PLS-SEM),which is a second-generation multivariate statistical method. PLS-SEM explains the relationships between varia bles that cannot be directly observed using observed variables. The observed water quality factors used in PLS SEM model are pH, TDS; cations ($Mg^{2+}$, $Na^+$ ); and the anions ($HCO_3^-$ , $Cl^-$ ve $SO_4^+$). The model used in the studywas evaluated in two stages; after the appropriateness of the measurement model was evaluated with different fitindices in the first stage, the structural model was evaluated in the second stage. According to the results of thePLS-SEM model, it was found that cations (γ=0.598, P

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