Repatriation Adjustment, Job Satisfaction, and Turnover Intentions as a Function of Core Self-Evaluations and Role Clarity

A growing corpus of employee relocation literature proposes the construct of repatriation work adjustment as not only a desired outcome on behalf of returning employees and their organizations, but also a persistent challenge. Contemporary research consistently traces repatriation work adjustment to a wide range of individual, occupational, and cultural antecedents, while also hypothesizing it as a contributor to desired outcomes. However, there exists a dearth of literature examining the intermediary role of job factors in the relationship between individual differences and repatriation work adjustment. By examining the main and indirect effects of core self-evaluations and role clarity, the present study proposes several hypotheses to determine whether core self-evaluations affect repatriation work adjustment through role clarity, and whether repatriation work adjustment affects job satisfaction and intentions to turnover. To test these mediated models, this study used an online, survey-based design to obtain self-report data from a sample of repatriated employees

Paleocurrent direction measurements in a volcanic setting by means of anisotropy of magnetic susceptibility : a case study from the lower Miocene Tepoztlán Formation (Transmexican Volcanic Belt, Central Mexico)

Sources of ancient volcanic rocks are often unknown if they are either eroded and/or covered by younger deposits. This problem, as well as the provenance of reworked volcaniclastic, fluvial and mass-flow deposits, can be partially solved by the application of anisotropy of the magnetic susceptibility (AMS). For massive and poorly sorted volcaniclastic rocks in particular this may be the only way of finding reliable transport directions and therefore allowing for paleogeographic reconstructions. Here, we present a data set of 428 AMS measurements and 249 measurements of sedimentary paleocurrent indicators from the Miocene Tepoztlán Formation at the southern edge of the Transmexican Volcanic Belt (Central Mexico). The highest degree of reliability of AMS measurements is gained for data from lava samples and the lowest from mass flows. Sedimentary structures in sandstones and conglomerates such as trough cross-stratification, asymmetric ripple marks, and the shape of scours and channels could be used to calibrate the results from AMS data and to prove their reliability. AMS data on fluvial deposits point to a drainage systemwith aW–E flow direction, indicating an outflow of the river system into the ancient Gulf of Mexico.Deutsche Forschungsgemeinschaft,project HI 643/5-1.Conacyt (grant 46213)http://www.elsevier.com/locate/sedgeohb201

Last glacial to Holocene fluvial aggradation and incision in the southern Upper Rhine graben: climatic and neotectonic controls. Dépôt et incision fluviatiles dans le sud du fossé du Rhin supérieur du dernier glaciaire à l´Holocène : contrôles climatiques et néotectoniques

We present a new model of landscape evolution for the southern Upper Rhine Graben based on analysis of Digital Elevation Models, new OSL and 14C dating, and a sediment budget. According to these data a three step scenario was developed (i) between ca. 60 to 16 ka BP accumulation of an alluvial fan in the southern Upper Rhine Graben, here called Upper Rhine Fan, downstream of the mouth of the Hochrhein valley. This fan is mostly composed of coarse-grained meltwater deposits. (ii) 16 to 10 ka BP incision of the Upper Rhine Fan and accumulation of a successive fan further down-stream by redepositing the eroded sediments (iii) 10 ka BP to present incision of the Rhine river into the younger fan leading to the present situation. Only phase (i) has experienced a significant sediment supply from the Alps and/or Alpine foreland. During the middle Würmian, fluvial aggradation is proved by several ages from sand lenses between ca. 60 and 27.5 ka BP. The period between ca. 27.5 and 16 ka BP is represented by a single or few layers of coarse-grained cobble and boulder-rich gravels and blocks. Because sand lenses are lacking they cannot be dated directly, but most presumably their deposition was related to the Late glacial meltdown. The repeated incision of the two fan surfaces after the Last Glacial Maximum and the Younger Dryas may be caused by high inputs of sediment-poor meltwater at this time. Weak Holocene aggradations may be linked with periods of climatic deterioration, tectonic pulses, and direct human impacts.Le nouveau modèle évolutif présenté pour le Sud du fossé du Rhin supérieur a été obtenu à partir de l´analyse des isohypses, des nouvelles datations OSL et 14C et du budget sédimentaire.Cette évolution s’est déroulée en trois phases: (i) de 60 à 30 ka B.P., un cône alluvial, appelé ici «Cône du Rhin supérieur» s’est constitué dans le Sud du fossé du Rhin supérieur, immédiatement en aval de la vallée du Haut-Rhin; ce cône est constitué essentiellement de dépôts grossiers mis en place par des eaux de fonte; (ii) de 16 à 10 ka B.P., l’incision du «Cône du Rhin supérieur» a pour conséquence, plus loin en aval, la construction d’un second cône à partir des sédiments érodés et (iii) de 10 ka B.P. à l`actuel, l’incision du Rhin dans le cône le plus récent est responsable de la morphologie actuelle.Les volumes considérables de sédiments provenant des Alpes ou de leur Avant-pays ont été transportés uniquement pendant la phase (i). L’aggradation fluviatile du milieu du Würm est démontrée par les datations obtenues sur les lentilles de sable qui ont livré des âges de 60 à 27,5 ka B.P. La période comprise entre 27,5 et 16 ka B.P. est représentée par une simple ou plusieurs séquences de gravières grossiers. En l’absence de datations absolues, on suppose que ces derniers sont corrélés à la fonte des glaciers à la fin du Würm. Les incisions des deux cônes après le dernier maximum glaciaire et le Dryas récent seraient à mettre en relation avec l’apport de grandes quantités d`eaux froides pauvre en sédiments. Les dépôts peu volumineux de l’Holocène peuvent être reliés aux périodes de détérioration climatique, aux mouvements tectoniques ou aux impacts dus à l’Homme

Build-up and depositional dynamics of an arc front volcaniclastic complex : the Miocene Tepoztlán Formation (Transmexican Volcanic Belt, Central Mexico)

Volcanic terrains such as magmatic arcs are thought to display the most complex surface environments on Earth. Ancient volcaniclastics are notoriously difficult to interpret as they describe the interplay between a single or several volcanoes and the environment. The Early Miocene Tepoztla´n Formation at the southern edge of the Transmexican Volcanic Belt belongs to the few remnants of this ancestral magmatic arc, and therefore is thought to represent an example of the initial phase of evolution of the Transmexican Volcanic Belt. Based on geological mapping, detailed logging of lithostratigraphic sections, palaeocurrent data of sedimentary features and anisotropy of magnetic susceptibility, mapping of two-dimensional panels from outcrop to field scale, and geochronological data in an area of ca 1000 km2, three periods in the evolution of the Tepoztla´n Formation were distinguished, which lasted around 4 Myr and are representative of a volcanic cycle (edifice growth phases followed by collapse) in a magmatic arc setting. The volcaniclastic sediments accumulated in proximal to medial distances on partly coalescing aprons, similar to volcanic ring plains, around at least three different stratovolcanoes. These volcanoes resulted from various eruptions separated by repose periods. During the first phase of the evolution of the Tepoztla´n Formation (22Æ8 to 22Æ2 Ma), deposition was dominated by fluvial sediments in a braided river setting. Pyroclastic material from small, andesitic–dacitic composite volcanoes in the near vicinity was mostly eroded and reworked by fluvial processes, resulting in sediments ranging from cross-bedded sand to an aggradational series of river gravels. The second phase (22Æ2 to 21Æ3 Ma) was characterized by periods of strong volcanic activity, resulting in voluminous accumulations of lava and tuff, which temporarily overloaded and buried the original fluvial system with its detritus. Continuous build-up of at least three major volcanic centres further accentuated the topography and, in the third phase (21Æ3 to 18Æ8 Ma), mass flow processes, represented by an increase of debris flow deposits, became dominant, marking a period of edifice destruction and flank failures

Ichnology, paleopedology, & sedimentology of the Cubango Megafan core: Using bioturbation to interpret environment, soil formation, sediment accumulation rate, hydrology, & climate

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Relevance of Minor Neuropsychological Deficits in Patients With Subjective Cognitive Decline

peer reviewed[en] BACKGROUND AND OBJECTIVES: To determine the relevance of minor neuropsychological deficits (MNPD) in patients with subjective cognitive decline (SCD) with regard to CSF levels of Alzheimer disease (AD) biomarkers, cognitive decline, and clinical progression to mild cognitive impairment (MCI). METHODS: This study included patients with clinical SCD and SCD-free, healthy control (HC) participants with available baseline CSF and/or longitudinal cognitive data from the observational DZNE Longitudinal Cognitive Impairment and Dementia study. We defined MNPD as a performance of at least 0.5SD below the mean on a demographically adjusted total score derived from the Consortium to Establish a Registry for Alzheimer's Disease neuropsychological assessment battery. We compared SCD patients with MNPD and those without MNPD with regard to CSF amyloid-β (Aβ)42/Aβ40, phosphorylated tau (p-tau181), total tau and Aβ42/p-tau181 levels, longitudinal cognitive composite trajectories, and risk of clinical progression to incident MCI (follow-up M ± SD: 40.6 ± 23.7 months). In addition, we explored group differences between SCD and HC in those without MNPD. RESULTS: In our sample (N = 672, mean age: 70.7 ± 5.9 years, 50% female), SCD patients with MNPD (n = 55, 12.5% of SCD group) showed significantly more abnormal CSF biomarker levels, increased cognitive decline, and a higher risk of progression to incident MCI (HR: 4.07, 95% CI 2.46-6.74) compared with SCD patients without MNPD (n = 384). MNPD had a positive predictive value of 57.0% (95% CI 38.5-75.4) and a negative predictive value of 86.0% (95% CI 81.9-90.1) for the progression of SCD to MCI within 3 years. SCD patients without MNPD showed increased cognitive decline and a higher risk of incident MCI compared with HC participants without MNPD (n = 215; HR: 4.09, 95% CI 2.07-8.09), while AD biomarker levels did not differ significantly between these groups. DISCUSSION: Our results suggest that MNPD are a risk factor for AD-related clinical progression in cognitively normal patients seeking medical counseling because of SCD. As such, the assessment of MNPD could be useful for individual clinical prediction and for AD risk stratification in clinical trials. However, SCD remains a risk factor for future cognitive decline even in the absence of MNPD

Relevance of Minor Neuropsychological Deficits in Patients With Subjective Cognitive Decline

Background and ObjectivesTo determine the relevance of minor neuropsychological deficits (MNPD) in patients with subjective cognitive decline (SCD) with regard to CSF levels of Alzheimer disease (AD) biomarkers, cognitive decline, and clinical progression to mild cognitive impairment (MCI).MethodsThis study included patients with clinical SCD and SCD-free, healthy control (HC) participants with available baseline CSF and/or longitudinal cognitive data from the observational DZNE Longitudinal Cognitive Impairment and Dementia study. We defined MNPD as a performance of at least 0.5SD below the mean on a demographically adjusted total score derived from the Consortium to Establish a Registry for Alzheimer's Disease neuropsychological assessment battery. We compared SCD patients with MNPD and those without MNPD with regard to CSF amyloid-beta (A beta)42/A beta 40, phosphorylated tau (p-tau181), total tau and A beta 42/p-tau181 levels, longitudinal cognitive composite trajectories, and risk of clinical progression to incident MCI (follow-up M +/- SD: 40.6 +/- 23.7 months). In addition, we explored group differences between SCD and HC in those without MNPD.ResultsIn our sample (N = 672, mean age: 70.7 +/- 5.9 years, 50% female), SCD patients with MNPD (n = 55, 12.5% of SCD group) showed significantly more abnormal CSF biomarker levels, increased cognitive decline, and a higher risk of progression to incident MCI (HR: 4.07, 95% CI 2.46-6.74) compared with SCD patients without MNPD (n = 384). MNPD had a positive predictive value of 57.0% (95% CI 38.5-75.4) and a negative predictive value of 86.0% (95% CI 81.9-90.1) for the progression of SCD to MCI within 3 years. SCD patients without MNPD showed increased cognitive decline and a higher risk of incident MCI compared with HC participants without MNPD (n = 215;HR: 4.09, 95% CI 2.07-8.09), while AD biomarker levels did not differ significantly between these groups.DiscussionOur results suggest that MNPD are a risk factor for AD-related clinical progression in cognitively normal patients seeking medical counseling because of SCD. As such, the assessment of MNPD could be useful for individual clinical prediction and for AD risk stratification in clinical trials. However, SCD remains a risk factor for future cognitive decline even in the absence of MNPD

Stoffbilanzen in kleinen Einzugsgebieten Baden-Württembergs

In 20-jähriger Forschung der Tübinger Arbeitsgruppe unter Leitung von Gerhard Einsele wurden ca. 30 kleine (<10 km2) und ca. 10 mittelgroße Einzugsgebiete (<550 km2) in Baden-Württemberg untersucht. Die verstreut publizierten Daten stellen eine Fülle quantitativer Grundlagendaten zu unterschiedlichen Aspekten hydrochemischer Stoffkreisläufe und ihrer anthropogenen Veränderungen bereit. Durch Kompartimentbilanzierungen und Herkunftsbestimmung der Stoffe können Raten einzelner Prozesse im Feldmaßstab zuverlässig bestimmt werden. Dadurch können Aussagen getroffen werden zum (i) gesteinsspezifischen Lösungsabtrag der Landschaft in Mitteleuropa, zum (ii) Einfluss landwirtschaftlicher Nutzung auf den Gebietswasserhaushalt und den Transfer von Nährstoffen aus dem Boden in das nachgeschaltete aquatische System und zu den (iii) Auswirkungen atmogener Stoffeinträge (Säuren, Schwermetalle, Phthalate, PAK) auf Oberflächengewässer und das Grundwasser