Filtern
Jahr
- 2017 (314)
- 2018 (277)
- 2019 (257)
- 2016 (255)
- 2020 (243)
- 2014 (239)
- 2010 (224)
- 2015 (216)
- 2012 (212)
- 2021 (210)
- 2011 (199)
- 2013 (192)
- 2022 (164)
- 2009 (149)
- 2023 (126)
- 2008 (123)
- 2007 (117)
- 2006 (112)
- 2005 (107)
- 2004 (95)
- 2002 (69)
- 2003 (61)
- 2001 (58)
- 2000 (52)
- 1998 (50)
- 2024 (50)
- 1999 (35)
- 1996 (28)
- 1997 (27)
- 1994 (18)
- 1993 (14)
- 1995 (14)
- 1989 (12)
- 1992 (10)
- 1990 (9)
- 1991 (9)
- 1988 (6)
- (5)
- 1986 (5)
- 1985 (4)
- 1987 (4)
- 1000 (3)
- 1983 (3)
- 1975 (2)
- 1978 (2)
- 1984 (2)
- 1971 (1)
- 1972 (1)
- 1973 (1)
- 1976 (1)
- 1977 (1)
- 1980 (1)
Publikationstyp
- Beitrag in einer (wissenschaftlichen) Zeitschrift (4389) (entfernen)
Sprache
- Deutsch (2602)
- Englisch (1420)
- Mehrsprachig (357)
- ger (4)
- Spanisch (4)
- Französisch (1)
- Chinesisch (1)
Schlagworte
- Humans (29)
- Child (25)
- Female (23)
- Adolescent (22)
- Male (22)
- Adult (18)
- Middle Aged (13)
- Germany (12)
- Preschool (12)
- Cross-Sectional Studies (11)
Fachbereich / Studiengang
- Sozialwesen (SW) (793)
- Gesundheit (MDH) (635)
- Wirtschaft (MSB) (494)
- IBL (401)
- Physikingenieurwesen (PHY) (396)
- Oecotrophologie · Facility Management (OEF) (350)
- Chemieingenieurwesen (CIW) (331)
- Energie · Gebäude · Umwelt (EGU) (307)
- Bauingenieurwesen (BAU) (192)
- ITB (129)
- Maschinenbau (MB) (98)
- Elektrotechnik und Informatik (ETI) (68)
- Architektur (MSA) (51)
- keine Zuordnung (49)
- Wandelwerk. Zentrum für Qualitätsentwicklung (47)
- iSuN Institut für Nachhaltige Ernährung (46)
- Design (MSD) (41)
- Center for Real Estate & Organization Dynamics (35)
- Kompetenzzentrum Humanitäre Hilfe (15)
- Gesundheit (4)
- Oecotrophologie · Facility Management (4)
- Bibliothek (2)
- Chemieingenieurwesen (2)
- Bauingenieurwesen (1)
- Institut für Nachhaltige Ernährung und Ernährungswirtschaft - iSuN (1)
- Zentrale Serviceeinrichtungen (1)
Consequences of the consistent exact solution of Einstein{Cartan equation on the time dependence of Hubble parameter are discussed. The torsion leads to a space and time-dependent expansion parameter which results into nontrivial windows of Hubble parameter between diverging behavior.
Only one window shows a period of decreasing followed by increasing time dependence. Provided a known cosmological constant and the present values of Hubble and deceleration parameter this
changing time can be given in the past as well as the ending time of the windows or universe. The comparison with the present experimental data allows to determine all parameters of the model.
Large-scale spatial periodic structures appear. From the metric with torsion outside matter, it is seen that torsion can feign dark matter.
KI-basierte Chatbots erlangen zunehmend Bedeutung im Bereich der Beratung und Therapie zur psychischen Gesundheit. Dabei sind Expertensysteme und generative Systeme als technische Grundlagen hinsichtlich der möglichen Effekte zu unterscheiden. Hinsichtlich der sozialen Effekte in der Mensch-Maschine-Interaktion beschreibt und definiert der Beitrag das Phänomen der quasisozialen Beziehung. Besonders relevant sind in diesem Zusammenhang Selbstoffenbarungseffekte, d.h. die Preisgabe persönlicher Informationen, die durch (zugeschriebene) Eigenschaften von Chatbots beeinflusst werden können. In der Beratung zeigt sich das im Teilen von selbstbezogenen Informationen mit einem kommunikativen Gegenüber und führt in Beziehungen zum Aufbau von Nähe. Diskutiert werden Effekte, Chancen und Risiken für die Einordnung des Einsatzes solcher Chatbots in Beratung und Therapie.
Das Spektrum technischer Filter zur Niederschlagswasserbehandlung reicht von kompakten Anlagen im dezentralen Maßstab bis zu zentralen Anlagen mit mehreren Hektar angeschlossener Fläche. Die hier vorgestellten zentralen Systeme werden im Aufstromverfahren durchflossen. Der Zufluss wird dabei durch Sedimentation oder eine Sedimentation-Lamellen-Kombination vorbehandelt. Das Spektrum der eingesetzten Filtersubstrate ermöglicht den Rückhalt feiner Partikel (AFS63) bis hin zu gelösten Stoffen. Die Rückhaltewirkung von technischen Filtern kann sehr hoch sein, allerdings muss der Kompromiss zwischen Wirkung und Wartung gefunden werden. Die Überwachung der Systeme ist durch Bilanzierung der Füllstände vergleichsweise einfach. Erste Ansätze für eine Bemessung der Systeme werden vorgestellt.
Family firm performance through transformational CEO leadership and familiness-related team forces
(2024)
Purpose. The purpose of this study is to test the role of familiness-related team forces induced by the CEO of family firms. In particular, we report on the effects of the transformational leadership style of CEOs on their respective top-management team (TMT) and firm performance when viewed through a familiness lens.
Design/methodology/approach. Survey measures were taken from a snowballed
sample of 72 CEOs of German family firms as well as from 245 members of their TMTs. We tested the aggregated firm-level data with objective performance indicators of the firms they led.
Findings. Support was obtained for the three hypothesized team-force mediations and the four-path mediation model. The relationship between CEO’s transformational style and
high family-firm performance is found to be serially mediated by TMT cohesion, behavioral integration and efficacy. Together, these three types of collective forces are assumed to be the
familiness effect of a family-member CEO with a transformational leadership style.
Originality. With our model we quantitatively tested familiness-type forces vis-à-vis firm performance. Theoretical and practical implications of these findings are discussed.
Wastewater generation model to predict impacts of urine separation on wastewater treatment plants
(2024)
Wastewater treatment plants (WWTPs) are under increasing pressure to enhance resource efficiency and reduce emissions into water bodies. The separation of urine within the catchment area may be an alternative to mitigate the need for costly expansions of central WWTPs. While previous investigations assumed a spatially uniform implementation of urine separation across the catchment area, the present study focuses on an adapted stochastic wastewater generation model, which allows the simulation of various wastewater streams (e.g., urine) on a household level. This enables the non-uniform separation of urine across a catchment area. The model is part of a holistic modelling framework to determine the influence of targeted urine separation in catchments on the operation and emissions of central WWTPs, which will be briefly introduced. The wastewater generation model is validated through an extensive sampling and measurement series.
Results based on observed and simulated wastewater quantity and quality for a catchment area of 366 residents for two dry weather days indicate the suitability of the model for wastewater generation and transport modelling. Based on this, four scenarios for urine separation were defined. The results indicate a potential influence of spatial distribution on the peaks of total nitrogen and total phosphorus.
Potential and risks of water reuse in Brandenburg (Germany) – an interdisciplinary case study
(2024)
For Brandenburg, a region in Germany with increasing water shortage and drought events, water reuse can counteract competition scenarios between drinking water supply, agricultural irrigation, and industrial use. Centralized and decentralized sources for reclaimed water are found to potentially substitute 245 or 28% of irrigation water, respectively, in agriculture production in Brandenburg. For such a reuse scenario, the
fate of organic micropollutants is examined for diatrizoate (DZA) and carbamazepine (CBZ). Retention in local sandy soil and transfer into roots and leaves of arugula are analyzed in lysimeter studies and greenhouse pot experiments. Vertical transport was found for DZA and accumulation in or on arugula roots with a root concentration factor of 1,925+34% but a low bioconcentration factor due to intrinsic molecule properties. CBZ was not found to be mobile in the sandy soil but accumulates in arugula roots and leaves by factors of 70+7% and 155+12%, respectively. Further research on potential plant uptake and groundwater enrichment for more substances is highly recommended as well as tertiary wastewater treatment prior to water reuse.