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In this paper the notion of the preference homogeneity is extended. We determine the value functions under the cumulative prospect theory such that the certainty equivalents related to them are invariant with respect to some classes of transformations. [ABSTRACT FROM AUTHOR]

[Display omitted] • C-S-H gels in the presence of heavy metal ions have been synthesized. • The effect of heavy metal ions on the structure of silicate gel has been investigated. • The vibrational spectra to describe the structure of C-S-H phase have been used. • XPS showed binding energies of metal ions, clarifying their role in immobilization. • We have attempted to evaluate the mechanism of immobilization of individual ions. This study investigates the immobilization mechanisms of heavy metal ions in the C-S-H phase. Synthetic C-S-H phases were prepared via the precipitation method, incorporating five different ions (Pb(II), Cd(II), Ni(II), Zn(II), and Cr(III)). Structural analysis of the obtained material was conducted using vibrational spectroscopy (both FT-IR and Raman), X-ray photoelectron spectroscopy, and X-ray diffraction. Spectroscopic methods were primarily employed to evaluate the structural effects and polymerization degree of the resulting C-S-H phase. Morphological changes were characterized using scanning and transmission electron microscopy (SEM and TEM, respectively). Our findings reveal several mechanisms for immobilizing heavy metal cations: precipitation of insoluble compounds (particularly notable for Ni(II) and Cr(III)), replacement of Ca(II) ions within the silicate structure (evident in the crystallization of Ca(OH) 2 in samples containing Cd(II), Ni(II), and Zn(II) in minimal quantities), and strong bonding of certain metals (such as Pb(II)) with the C-S-H phase structure. These insights contribute to understanding the potential applications of C-S-H phases in heavy metal immobilization. [ABSTRACT FROM AUTHOR]

Quality requirements and tests taken on the surfacing layer Inconel 625 are presented in the article. The reasons of using surfacing layer Inconel 625 and technologies of its making with a particular emphasis on the CMT method are described. Quality requirements for the surfacing weld Inconel 625 are provided. Basic requirements included in the Merkblatt 1166, as well as additional requirements, which are reflected in the technical specifications of the boilers' producers are specified. [ABSTRACT FROM AUTHOR]

In 1984 A. Reich proved that under Expected Utility Theory, a scale invariance of the Principle of Equivalent Utility just for two particular values of parameters implies its scale invariance. In this paper, we extend this result onto the Principle of Equivalent Utility under Cumulative Prospect Theory. [ABSTRACT FROM AUTHOR]

Introduction: Full findings from the European Commission funded EU-NET-ADB study (Safer Internet Programme) will be presented. Objectives: Empirical findings that elucidate the development of an internet addictive behaviour are still incomplete. This is also related to risk as well as protective factors of internet use. Here a process oriented approach to identify underlying conditions of an internet addictive behaviour was chosen. Aims: The aim of the study is to enhance the knowledge and understanding of underlying processes which lead to situation were internet addictive behaviour can evolve. Methods: In total 124 in-depth interviews were conducted with adolescents with an age of 14-17 year. Adolescents from seven different European countries (Greece, Spain, Poland, Germany, Romania, Netherlands & Iceland) participated in this study. Eligibility was granted when adolescents scored more than 30 point or equal in the Internet Addiction Test (IAT; Young, 1998). Data analysis was conducted by use of a step-wise full version of Grounded Theory (Strauss & Corbin, 1990; 1998). Results: Adolescents employed maladaptive and adaptive strategies in regard to their involvement in the internet. Thus different Digital Outcomes such as “I am addicted” (Stuck Online) ranging to more adaptive internet behaviour like (Juggling it All) and patterns of self-correcting (Coming Full Cycle) were identified. These Digital Outcomes were consequently linked to adolescent's developmental pathways and can be characterized by the core category “Navigating Adolescent Pathways”. Conclusions: Contextual and developmental factors that mediate the development of an internet addictive behaviour could be identified and linked to multiple Digital Outcomes. [Copyright &y& Elsevier]