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Will die Offene Jugendarbeit (OJA) ihrem Auftrag gerecht werden und Jugendliche in ihrem Aufwachsen in einer mediatisierten Welt begleiten, muss sie sich aktualisieren und beginnen, das gesamte Potenzial freizusetzen, das digitale Medien für den Einsatz in der OJA bergen. Deshalb hat sich Andrea Portmann im Rahmen ihrer Bachelorarbeit mit digitaler Jugendarbeit (dJA) in städtischen Kontexten der Deutschschweiz befasst. Auf theoretischer Ebene wurde untersucht, wie die digitale Transformation das Praxisfeld der OJA verändert, was unter dJA verstanden wird und welche Erkenntnisse im Hinblick auf die Implementierung von dJA in der Schweiz bereits vorliegen. Nach einem Perspektivenabgleich mit der europäischen Union hat sich gezeigt, dass dJA mit Blick auf Forschung und Praxis hierzulande hinterherhinkt. In der Folge wurden sechs Expert*innen-Interviews mit Jugendarbeiter*innen geführt, welche in Deutschschweizer Städten bereits dJA umsetzen und mittels Gatekeeper-Verfahren als «Best Practices» in die Stichprobe gelangt sind. Die qualitative Forschungsanlage sollte Aufschluss darüber geben, wie sich gelingende dJA in städtischen Kontexten der Deutschschweiz äussert und welche (übergeordneten) Faktoren Fachpersonen hinsichtlich der Implementierung von dJA als förderlich erachten. Mit den Erkenntnissen aus Theorie und Praxis konnten zwei Handreichungen für die Praxis entwickelt werden, welche mögliche Umsetzungsstrategien zur nachhaltigen Professionalisierung von dJA zeigen. Während das 8-Check-Modell zur Implementierung von dJA Fachpersonen im Feld einen möglichen Einstieg zeigt, richten sich die Handlungsempfehlungen an alle relevanten Akteur*innen am Prozess.

Mit ��SKA im Digalog�� wurde der Grundstein f��r die Angebotsentwicklung im Bereich Jugend gelegt. Dies war angezeigt, weil die durchgef��hrte, umfassende Situationsanalyse die geringe Bekanntheit von Angeboten und Team der Offenen Kinder- und Jugendarbeit Zofingen (OKJA) zum Vorschein brachte. Im Hinblick auf das partizipatorische Recht der Information sollten Angebot und Prinzipien der SKA f��r Jugendliche ��bersetzt und sichtbar gemacht werden. Um die Orientierung an effektiven Bed��rfnissen zu gew��hrleisten, wurden die Jugendlichen als Expert*innen ihrer Lebenswelt m��glichst fr��h miteinbezogen. Vorg��ngig dazu wurden mit Fachpersonen Dialoge gef��hrt. Ziel war es, ein gemeinsames Verst��ndnis dar��ber zu entwickeln, was SKA und Jugendarbeit auszeichnet, um dann den Fokus auf m��gliche ��bersetzungsleistungen zu verlagern. In der Auseinandersetzung fand eine Haltungs- und Auftragskl��rung statt. In einem ergebnisoffenen Prozess konnten schliesslich erste Pilot-Angebote von und f��r Jugendliche realisiert werden, durch die SKA f��r Adressat*innen erlebbar gemacht werden konnte. Damit wurden erste Schritte in Richtung einer nachhaltigen Partizipationskultur get��tigt, welche ��ber das Projektende hinaus zum Mitmachen animieren soll. Gerade im Bereich der digitalen Erfahrungsr��ume besteht aber noch immer grosses Entwicklungspotenzial. Im Projektzeitraum wurden weitreichende Ver��nderungsprozesse in Gang gesetzt. Insgesamt vermochte ��SKA im Digalog�� die gew��nschte Fokusverlagerung zu Gunsten der Zielgruppe Jugend zu bewirken. Dar��ber hinaus konnten Instrumente entwickelt werden, welche auch ��ber das Projektende hinaus einen Einsatz finden. Vom mit Handlungsempfehlungen angereicherten Erkenntnisgewinn sollte die OKJA in ihren Folgeprojekten noch lange zehren k��nnen., + Code Diss LU: hslusa pask be + Fussnote: Projekt-Arbeit, Hochschule Luzern ��� Soziale Arbeit, Studienrichtung Soziokultur, 2022 + NL-Code: NLLUHSA202202

As urbanization has expanded, polluted urban stormwater runoff has become a greater concern. While originally installed to control water quantity by smoothing out urban runoff hydrographs, best management practices such as bioretention systems may also remove contaminants in runoff. This project had three primary goals: 1) to evaluate the performance of the Iris Rain Garden with respect to the removal of dissolved trace organic contaminants, 2) to determine the hydraulic conductivity of various geomedia, and 3) to determine the removal of targeted metal contaminants by various geomedia. It was found that the Iris Rain Garden reduced the amount of atrazine, caffeine, carbendazim, and triphenyl phosphate in stormwater runoff. Furthermore, hydraulic conductivity values for various types of geomedia were determined. Currently, work is being done with various geomedia to characterize the removal of heavy metals.

This publication focuses on the manifold activities at the Kunsthof Zürich, an exceptional outdoor exhibition space. Established in 1993, following an initiative by today's Zurich University of the Arts (ZHdK), the Kunsthof Zurich has, over the past twenty years, hosted exhibitions and art projects undertaken by nationally and internationally acclaimed artists as well as by art students. It has been used for site-specific works, as a production and discursive site, and as a point of departure for other projects. This book gathers in a single volume all the art projects and exhibitions realised at the Kunsthof Zürich between 1993 and 2013. The extensive body of materials and documents provides not only an in-depth insight into the broad spectrum of artwork undertaken in situ, but also into the various shapes that the Kunsthof has assumed and chosen to present itself as an exhibition institution in the course of time: sketches, concept papers and notes, letters, faxes, e-mails, press releases, invitation cards, brochures, exhibition photographs, and newspaper articles. These items have amassed in analog or digital form in the Kunsthof archive, and they tell a multifaceted story of the site's history. In this volume, a page is devoted to each project, followed by selected, hitherto unpublished archival material. Some of the works realised at the Kunsthof Zürich include sound motion or moving images, or were audio- and video-recorded. These sound and visual documents are available at www.editionfink.ch/kunsthof., + ID: 586224 + Serientitel: Schriftenreihe des Instituts für Gegenwartskunst

Enhancing the understanding of the fate of wastewater-derived organic micropollutants in rivers is crucialto improve risk assessment, regulatory decision making and river management. Hyporheic exchange andsediment bacterial diversity are two factors gaining increasing importance as drivers for micropollutantdegradation, but are complex to study infield experiments and usually ignored in laboratory tests aimedto estimate environmental half-lives. Flume mesocosms are useful to investigate micropollutantdegradation processes, bridging the gap between thefield and batch experiments. However, few studieshave usedflumes in this context. We present a novel experimental setup using 20 recirculatingflumesand a response surface model to study the influence of hyporheic exchange and sediment bacterialdiversity on half-lives of the anti-epileptic drug carbamazepine (CBZ) and the artificial sweeteneracesulfame (ACS). The effect of bedform-induced hyporheic exchange was tested by three treatmentlevels differing in number of bedforms (0, 3 and 6). Three levels of sediment bacterial diversity wereobtained by diluting sediment from the River Erpe in Berlin, Germany, with sand (1 : 10, 1 : 1000 and1 : 100 000). Our results show that ACS half-lives were significantly influenced by sediment dilution andnumber of bedforms. Half-lives of CBZ were higher than ACS, and were significantly affected only by thesediment dilution variable, and thus by bacterial diversity. Our results show that (1) theflume-setup isa useful tool to study the fate of micropollutants in rivers, and that (2) higher hyporheic exchange andbacterial diversity in the sediment can increase the degradation of micropollutants in rivers.

The Cryosphere Discussions, ISSN:1994-0432, ISSN:1994-0440

Enhancing the understanding of the fate of wastewater-derived organic micropollutants in rivers is crucial to improve risk assessment, regulatory decision making and river management. Hyporheic exchange and sediment bacterial diversity are two factors gaining increasing importance as drivers for micropollutant degradation, but are complex to study in field experiments and usually ignored in laboratory tests aimed to estimate environmental half-lives. Flume mesocosms are useful to investigate micropollutant degradation processes, bridging the gap between the field and batch experiments. However, few studies have used flumes in this context. We present a novel experimental setup using 20 recirculating flumes and a response surface model to study the influence of hyporheic exchange and sediment bacterial diversity on half-lives of the anti-epileptic drug carbamazepine (CBZ) and the artificial sweetener acesulfame (ACS). The effect of bedform-induced hyporheic exchange was tested by three treatment levels differing in number of bedforms (0, 3 and 6). Three levels of sediment bacterial diversity were obtained by diluting sediment from the River Erpe in Berlin, Germany, with sand (1 : 10, 1 : 1000 and 1 : 100 000). Our results show that ACS half-lives were significantly influenced by sediment dilution and number of bedforms. Half-lives of CBZ were higher than ACS, and were significantly affected only by the sediment dilution variable, and thus by bacterial diversity. Our results show that (1) the flume-setup is a useful tool to study the fate of micropollutants in rivers, and that (2) higher hyporheic exchange and bacterial diversity in the sediment can increase the degradation of micropollutants in rivers., Environmental Science: Processes & Impacts, 21 (12), ISSN:2050-7887, ISSN:2050-7895

Knowledge of the ice thickness distribution of glaciers and ice caps is an important prerequisite for many glaciological and hydrological investigations. A wealth of approaches has recently been presented for inferring ice thickness from characteristics of the surface. With the Ice Thickness Models Intercomparison eXperiment (ITMIX) we performed the first coordinated assessment quantifying individual model performance. A set of 17 different models showed that individual ice thickness estimates can differ considerably – locally by a spread comparable to the observed thickness. Averaging the results of multiple models, however, significantly improved the results: on average over the 21 considered test cases, comparison against direct ice thickness measurements revealed deviations on the order of 10 ± 24 % of the mean ice thickness (1σ estimate). Models relying on multiple data sets – such as surface ice velocity fields, surface mass balance, or rates of ice thickness change – showed high sensitivity to input data quality. Together with the requirement of being able to handle large regions in an automated fashion, the capacity of better accounting for uncertainties in the input data will be a key for an improved next generation of ice thickness estimation approaches., The Cryosphere, 11 (2), ISSN:1994-0416, ISSN:1994-0424

Urban streams receive increasing loads of organic micropollutants from treated wastewaters. A comprehensive understanding of the in-stream fate of micropollutants is thus of high interest for water quality management. Bedforms induce pumping effects considerably contributing to whole stream hyporheic exchange and are hotspots of biogeochemical turnover processes. However, little is known about the transformation of micropollutants in such structures. In the present study, we set up recirculating flumes to examine the transformation of a set of micropollutants along single flowpaths in two triangular bedforms. We sampled porewater from four locations in the bedforms over 78 days and analysed the resulting concentration curves using the results of a hydrodynamic model in combination with a reactive transport model accounting for advection, dispersion, first-order removal and retardation. The four porewater sampling locations were positioned on individual flowpaths with median solute travel times ranging from 11.5 to 43.3 h as shown in a hydrodynamic model previously. Highest stability was estimated for hydrochlorothiazide on all flowpaths. Lowest detectable half-lives were estimated for sotalol (0.7 h) and sitagliptin (0.2 h) along the shortest flowpath. Also, venlafaxine, acesulfame, bezafibrate, irbesartan, valsartan, ibuprofen and naproxen displayed lower half-lives at shorter flowpaths in the first bedform. However, the behavior of many compounds in the second bedform deviated from expectations, where particularly transformation products, e.g. valsartan acid, showed high concentrations. Flowpath-specific behavior as observed for metformin or flume-specific behavior as observed for metoprolol acid, for instance, was attributed to potential small-scale or flume-scale heterogeneity of microbial community compositions, respectively. The results of the study indicate that the shallow hyporheic flow field and the small-scale heterogeneity of the microbial community are major controlling factors for the transformation of relevant micropollutants in river sediments., Scientific Reports, 11 (1), ISSN:2045-2322