Auswahl der wissenschaftlichen Literatur zum Thema „Migration de Services“
Geben Sie eine Quelle nach APA, MLA, Chicago, Harvard und anderen Zitierweisen an
Inhaltsverzeichnis
Machen Sie sich mit den Listen der aktuellen Artikel, Bücher, Dissertationen, Berichten und anderer wissenschaftlichen Quellen zum Thema "Migration de Services" bekannt.
Neben jedem Werk im Literaturverzeichnis ist die Option "Zur Bibliographie hinzufügen" verfügbar. Nutzen Sie sie, wird Ihre bibliographische Angabe des gewählten Werkes nach der nötigen Zitierweise (APA, MLA, Harvard, Chicago, Vancouver usw.) automatisch gestaltet.
Sie können auch den vollen Text der wissenschaftlichen Publikation im PDF-Format herunterladen und eine Online-Annotation der Arbeit lesen, wenn die relevanten Parameter in den Metadaten verfügbar sind.
Zeitschriftenartikel zum Thema "Migration de Services"
Fuchs, Philip X., Mojca Doupona, Kinga Varga, Marta Bon, Cristina Cortis, Andrea Fusco, Loriana Castellani et al. „Multi-national perceptions on challenges, opportunities, and support structures for Dual Career migrations in European student-athletes“. PLOS ONE 16, Nr. 6 (25.06.2021): e0253333. http://dx.doi.org/10.1371/journal.pone.0253333.
Der volle Inhalt der QuelleJha, Chandan Kumar, Vijaya Gupta, Utpal Chattopadhyay und Binilkumar Amarayil Sreeraman. „Migration as adaptation strategy to cope with climate change“. International Journal of Climate Change Strategies and Management 10, Nr. 1 (08.01.2018): 121–41. http://dx.doi.org/10.1108/ijccsm-03-2017-0059.
Der volle Inhalt der QuelleMassey, Douglas S., Nathalie Williams, William G. Axinn und Dirgha J. Ghimire. „Community Services and Out-Migration“. International Migration 48, Nr. 3 (05.10.2009): 1–41. http://dx.doi.org/10.1111/j.1468-2435.2009.00581.x.
Der volle Inhalt der Quellede Carvalho, F., und R. T. Carter. „Messaging platform and services migration“. BT Technology Journal 23, Nr. 1 (Januar 2005): 90–97. http://dx.doi.org/10.1007/s10550-005-0110-6.
Der volle Inhalt der QuelleGilbert, Francis. „Migration: Ecosystem Services Helicoptered In“. Current Biology 29, Nr. 14 (Juli 2019): R697—R699. http://dx.doi.org/10.1016/j.cub.2019.06.013.
Der volle Inhalt der QuelleOfuoku, Albert Ukaro, und Davina Okompu. „Migration among Farmers in Delta State, Nigeria: Is it a Climate Change Adaptation Strategy?“ Journal of Agriculture and Environment for International Development (JAEID) 116, Nr. 1 (30.06.2022): 5–28. http://dx.doi.org/10.36253/jaeid-12076.
Der volle Inhalt der QuelleVasyltsiv, T. G., U. Y. Sadova und O. V. Makhoniuk. „The Problematic Aspects and Directions of Development of the Migration Services Market in Ukraine“. Business Inform 5, Nr. 520 (2021): 252–60. http://dx.doi.org/10.32983/2222-4459-2021-5-252-260.
Der volle Inhalt der QuelleFee, Molly. „Paper integration: The structural constraints and consequences of the US refugee resettlement program“. Migration Studies 7, Nr. 4 (03.07.2018): 477–95. http://dx.doi.org/10.1093/migration/mny016.
Der volle Inhalt der QuellePuliafito, Carlo, Carlo Vallati, Enzo Mingozzi, Giovanni Merlino, Francesco Longo und Antonio Puliafito. „Container Migration in the Fog: A Performance Evaluation“. Sensors 19, Nr. 7 (27.03.2019): 1488. http://dx.doi.org/10.3390/s19071488.
Der volle Inhalt der QuelleRees, Martha W. „Editorial: Migration costs“. MIGRATION LETTERS 6, Nr. 1 (28.04.2009): 1–2. http://dx.doi.org/10.33182/ml.v6i1.81.
Der volle Inhalt der QuelleDissertationen zum Thema "Migration de Services"
Albarrán, Munoz Isaac, und Ruiz De Azúa Manuel Parras. „Telecommunication Services’ Migration to the Cloud : Network Performance analysis“. Thesis, KTH, Kommunikationssystem, CoS, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-93841.
Der volle Inhalt der QuelleActualmente, los servicios de telecomunicaciones se implementan comúnmente en redes privadas, controladas y mantenidas por los operadores de telecomunicaciones, por proveedores de servicios de colocación o, hasta cierto punto, por proveedores de hardware y software. Sin embargo, con el presente desarrollo de la tecnología de ’Cloud computing’, se puede considerar la posibilidad de implementar servicios de telecomunicaciones en la nube, aprovechando su alta disponibilidad, distribución geográfica y facilidad de uso. Además, este cambio puede reducir las preocupaciones de los operadores en relación al mantenimiento del hardware y de la red, delegando en los proveedores del servicio de ’Cloud computing’, los cuáles deberán proporcionar un servicio consistente, cumpliendo así con los requisitos de los servicios de telecomunicaciones. Por otra parte, la virtualización propociona la posibilidad de cambiar rápida y fácilmente la topología de la red, facilitando la adición y supresión de maquinas y servicios, y, por tanto, permitiendo a los operadores adaptarse a sus necesidades sobre la marcha. El objetivo de esta tésis es analizar y evaluar en nivel de rendimiento, desde el punto de vista de la red, que se puede conseguir usando recursos de ’Cloud computing’ para implementar un servicio de telecomunicaciones, llevando a cabo experimentos tanto en el laboratorio como en un entorno real. Estos análisis fueron realizados utilizando un prototipo de un servidor de conmutación móvil (MSC-S) de Ericsson, aunque los resultados pueden adaptarse a otras aplicaciones con unos requisitos similares. Para probar esta propuesta en un entorno real, se realizó una encuesta de proveedores de servicios de ’Cloud computing’, con el objetivo de evaluar sus servicios teniendo en cuenta nuestros requisitos de hardware y red. Finalmente, un proveedor fue escogido y su servicio evaluado basándonos en los requisitos de la aplicación MSC-S. En este documento proporcionamos los resultados de esa evaluación y los comparamos con los obtenidos en el laboratorio. Los resultados de ambas evaluaciones fueron satisfactorios e indican la posibilidad de implementar servicios de telecomunicaciones en la nube, siempre que la nube cumpla los requisitos impuestos por dichos servicios de telecomunicaciones.
Nuförtiden är telekommunikationstjänster ofta uppsatta i privata nätverk, som kontrolleras och underhålls av teleoperatörerna själva, av samlokaliserande tjänsteleverantörer eller i viss utsträckning av deras hårdvaruoch programvaru-leverantörer. Med den nuvarande utvecklingen av Cloud Computing-resurser kan man dock överväga om dessa tjänster kan och bör genomföras i ett Cloud, vilket drar fördel av Cloud Computings höga tillgänglighet, geografiska spridning, och enkla användning. Denna migration minskar även teleoperatörernas oro angående hårdvaru- och nätverks-underhåll genom att överlåta detta till Cloud Computing-leverantörerna, som kommer att behöva leverera en hög tillgänglighet och konsekvent service för att uppfylla telekommunikationstjänsternas krav. Dessutom ger virtualisering möjlighet att enkelt och snabbt ändra ett Clouds nätverkstopologi, vilket underlättar tillägg och borttagning av maskiner och tjänster, vilket hjälper teleoperatörer att snabbt anpassa sig till deras krav. Målet med examensarbetet är att analysera och uppskatta prestandan, från nätets perspektiv, som kan uppnås vid användning av Cloud Computingresurser för att genomföra en teletjänst, genom praktiska experiment både i laboratorium och i verkligheten. Dessa mätningar och analyser utfördes med en prototyp av en Ericsson mobilomkopplingscentralserverapplikation (MSCS), även om de erhållna resultaten skulle kunna anpassas till andra program med liknande krav. För att potentiellt kunna testa denna metod i en verklig miljö användes en tidigare leverantörs undersökning för att utvärdera deras tjänster baserat på våra krav på hårdvara och nätverksegenskaper, och genom detta välja en lämplig kandidatmiljö för våra syften. En Cloud-leverantör valdes och dess tjänster utvärderades vidare baserat på MSC-Ss applikationskrav. Vi redovisar resultatet av vår testprocess i den här miljön och jämför det med resultaten av tester i laboratoriemiljö. Resultaten från båda uppsättningarna av tester var väl korrelerade och visar på potentialen av att implementera telekommunikationstjänster i en Cloud-miljö, om detta Cloud uppfyller de kraven som ställs av telekommunikationtjänsterna.
Engman, Michael Olavi. „North-South trade in services : temporary migration of skilled labour“. Paris, Institut d'études politiques, 2010. http://www.theses.fr/2010IEPP0079.
Der volle Inhalt der QuelleMore than half a century of trade and market liberalisation have greatly facilitated the movement of goods, services, capital and information across borders. This integration process has brought unprecedented welfare gains to the wor1d's population and there is much scope to stimulate further economic growth in developing countries through market and trade friendly reforms. One piece in the globalisation puzzle has largely been excluded from the liberalisation process: the movement of human capital remains highly controlled and restricted. This is regrettable since the liberalisation of temporary labour movement could have a greater impact on economic growth and development than any other single policy. Many developing countries are well endowed with human capital and it is a factor of production and a mode of service delivery in which many developing countries enjoy a comparative advantage. This dissertation focuses on temporary migration of skilled workers from poor to rich countries. The underlying assumption-based on economic models and empirical findings-is that a more liberal environment for temporary labour mobility would bring substantial welfare gains by stimulating economic growth and development. Consequently, the focal point is on trade rather than immigration (or so called 'brain circulation' rather than 'brain drain'). The dissertation is centred on three in-depth studies of some of the world's leading labour sending countries: Egypt, India and the Philippines; and some of their most prominent services sectors: education, IT, and health services
Ivanova, Tatiana V. „Immigration policy in the U.S. and trends in international migration“. Instructions for remote access. Click here to access this electronic resource. Access available to Kutztown University faculty, staff, and students only, 1999. http://www.kutztown.edu/library/services/remote_access.asp.
Der volle Inhalt der QuelleSource: Masters Abstracts International, Volume: 45-06, page: 2944. Typescript. Abstract precedes thesis as preliminary leaves. Includes bibliographical references.
Oliver, Caroline Joy. „Retiring to paradise? : reassessing liminality through leisure migration to Spain“. Thesis, University of Hull, 2002. http://hydra.hull.ac.uk/resources/hull:3555.
Der volle Inhalt der QuelleMilot, Catherine Alexandra. „Three Essays on Low-skilled Migration, Sustainability and Trade in Services“. Thèse, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/22859.
Der volle Inhalt der QuelleFandi, M. M. „The impact of retirement migration on health care demand and resource allocation in Lancaster Health District“. Thesis, Lancaster University, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372537.
Der volle Inhalt der QuelleOulaaffart, Mohamed. „Automating Security Enhancement for Cloud Services“. Electronic Thesis or Diss., Université de Lorraine, 2023. http://www.theses.fr/2023LORR0232.
Der volle Inhalt der QuelleThe advances in virtualization techniques and the maturity of orchestration languages have contributed to the design and deployment of cloud composite services. These cloud services may be subject to changes over time, due to the migration of their resources. This may introduce new vulnerabilities, that compromise the whole services. In that context, this thesis proposes to enhance and automate the security of cloud composite services, according to three main axes. The first axis consists in an automated SMT-based security framework for supporting migrations in cloud composite services, such as those orchestrated with the TOSCA (Topology and Orchestration Specification for Cloud Applications) language. It relies on verification techniques for automatically assessing the configuration changes that affect the components of cloud services during their migrations and determining adequate countermeasures. The second axis investigates the design of an inter-cloud trusted third party, called C3S-TTP (Composite Cloud Configuration Security-Trusted Third Party). This one is capable to perform a precise and exhaustive vulnerability assessment, without requiring the cloud provider and the cloud tenant to share critical configuration information between each other. The third axis is centered on the investigation of a moving target defense strategy which combines artificial intelligence algorithms together with verification techniques. The purpose is to deceive reconnaissance activities performed by attackers through a large exploration of states, while minimizing the occurrence of new vulnerabilities that may impact on the attack surface of cloud composite services
Fyhr, Louise. „Public Services and Migration : A comparison between Swedish rural and urban municipalities“. Thesis, Internationella Handelshögskolan, Jönköping University, IHH, Nationalekonomi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-48563.
Der volle Inhalt der QuelleMaxwell, Alistair. „The spatial economic impact of an airport migration on the business services sector“. Diss., University of Pretoria, 2020. http://hdl.handle.net/2263/80473.
Der volle Inhalt der QuelleMini Dissertation (MBA)--University of Pretoria, 2020.
Gordon Institute of Business Science (GIBS)
MBA
Unrestricted
Choy, Sheung-sheung Maggie, und 蔡湘湘. „An analysis of the pre-migration services preparing mainland wives to join their husbands“. Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1998. http://hub.hku.hk/bib/B31250476.
Der volle Inhalt der QuelleBücher zum Thema "Migration de Services"
T, Brown Walter. ISDN migration strategies. Holtsville, N.Y: Computer Technology Research Corp., 1990.
Den vollen Inhalt der Quelle findenNadon, Jason. Website Hosting and Migration with Amazon Web Services. Berkeley, CA: Apress, 2017. http://dx.doi.org/10.1007/978-1-4842-2589-9.
Der volle Inhalt der QuelleDufrasne, Bertrand. IBM XIV storage system .: Copy services and migration. Poughkeepsie, NY: IBM, International Technical Support Organization, 2011.
Den vollen Inhalt der Quelle findenDufrasne, Bertrand. IBM XIV Storage System: Copy services and migration. [Poughkeepse, NY]: IBM, International Technical Support Organization, 2010.
Den vollen Inhalt der Quelle findenKate, Lefko-Everett, Williams Vincent und Southern African Migration Project, Hrsg. The quality of migration services delivery in South Africa. Cape Town: Idasa, 2005.
Den vollen Inhalt der Quelle findenRecommendations on statistics of international migration. New York: United Nations, 1998.
Den vollen Inhalt der Quelle findenDivision, United Nations Statistical. Recommendations on statistics of international migration. New York: United Nations, 1998.
Den vollen Inhalt der Quelle findenGaby, Franger, und Nečasova Mirka, Hrsg. On the move: European social work responses to migration. Roma: Carocci, 2008.
Den vollen Inhalt der Quelle findenGaby, Franger, und Nečasova Mirka, Hrsg. On the move: European social work responses to migration. Roma: Carocci, 2008.
Den vollen Inhalt der Quelle findenLiliana, Romero Bernal, und Corporación Colectivo de Abogados José Alvear Restrepo., Hrsg. El Desplazamiento forzado en Colombia: Análisis y propuestas de la Coordinación Nacional de Desplazados y ONG's de derechos humanos. Bogotá, Colombia: Asociación Nacional de Ayuda Solidaria, 2001.
Den vollen Inhalt der Quelle findenBuchteile zum Thema "Migration de Services"
Balobaid, Awatef, und Debatosh Debnath. „Cloud Migration Tools: Overview and Comparison“. In Services – SERVICES 2018, 93–106. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-94472-2_7.
Der volle Inhalt der QuelleKhanfer, Riyad, John Ryan, Howard Aizenstein, Seema Mutti, David Busse, Ilona S. Yim, J. Rick Turner et al. „Migration and Health Services“. In Encyclopedia of Behavioral Medicine, 1241. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4419-1005-9_1332.
Der volle Inhalt der QuelleMattos, Diogo M. F., Lyno Henrique G. Ferraz und Otto Carlos M. B. Duarte. „Virtual Machine Migration“. In Cloud Services, Networking, and Management, 49–72. Hoboken, NJ: John Wiley & Sons, Inc, 2015. http://dx.doi.org/10.1002/9781119042655.ch3.
Der volle Inhalt der QuelleNacer, Hassina, Kada Beghdad Bey und Nabil Djebari. „Migration from Web Services to Cloud Services“. In Ubiquitous Networking, 179–92. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-68179-5_16.
Der volle Inhalt der QuelleAbbasov, Rovshan, Rovshan Karimov und Natavan Jafarova. „Environmental Migration and Cultural Losses“. In Ecosystem Services in Azerbaijan, 123–79. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-08770-7_4.
Der volle Inhalt der QuelleKaczmarski, Krzysztof. „Transparent Migration of Database Services“. In SOFSEM 2006: Theory and Practice of Computer Science, 332–40. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/11611257_31.
Der volle Inhalt der QuelleKyle, David. „Migration Industries, Legal Services, and Human Smuggling“. In Encyclopedia of Migration, 1–3. Dordrecht: Springer Netherlands, 2015. http://dx.doi.org/10.1007/978-94-007-6179-7_5-3.
Der volle Inhalt der QuelleEl-Refaey, Mohamed. „Virtual Machines Provisioning and Migration Services“. In Cloud Computing, 121–56. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9780470940105.ch5.
Der volle Inhalt der QuelleLee, DongChun, und JeomGoo Kim. „Adaptive Migration Strategy for Mobile Agents on Internet“. In Technologies for E-Services, 201–12. Berlin, Heidelberg: Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/3-540-44809-8_15.
Der volle Inhalt der QuelleOzcurumez, Saime. „International protection and psychosocial support services“. In Forced Migration and Social Trauma, 9–17. New York : Routledge, 2019.: Routledge, 2018. http://dx.doi.org/10.4324/9780429432415-3.
Der volle Inhalt der QuelleKonferenzberichte zum Thema "Migration de Services"
Strunk, Anja. „Costs of Virtual Machine Live Migration: A Survey“. In 2012 IEEE World Congress on Services (SERVICES). IEEE, 2012. http://dx.doi.org/10.1109/services.2012.23.
Der volle Inhalt der QuellePark, Jaemin, Sungjin Park, Jisoo Oh und Jong-Jin Won. „Toward Live Migration of SGX-Enabled Virtual Machines“. In 2016 IEEE World Congress on Services (SERVICES). IEEE, 2016. http://dx.doi.org/10.1109/services.2016.23.
Der volle Inhalt der QuelleVu, Quang Hieu, und Rasool Asal. „Legacy Application Migration to the Cloud: Practicability and Methodology“. In 2012 IEEE World Congress on Services (SERVICES). IEEE, 2012. http://dx.doi.org/10.1109/services.2012.47.
Der volle Inhalt der QuelleZou, Jianing, Xudong Liu, Hailong Sun und Jin Zeng. „Live Instance Migration with Data Consistency in Composite Service Evolution“. In 2010 IEEE Congress on Services (SERVICES). IEEE, 2010. http://dx.doi.org/10.1109/services.2010.76.
Der volle Inhalt der QuelleUpadhyaya, Bipin, Ying Zou, Hua Xiao, Joanna Ng und Alex Lau. „Migration of SOAP-based services to RESTful services“. In 2011 13th IEEE International Symposium on Web Systems Evolution (WSE). IEEE, 2011. http://dx.doi.org/10.1109/wse.2011.6081828.
Der volle Inhalt der QuelleKuhn, Eva, Vesna Sesum-Cavic und Thomas Schmid. „Dynamic Migration of Cloud Services“. In 2014 IEEE 3rd Symposium on Network Cloud Computing and Applications (NCCA). IEEE, 2014. http://dx.doi.org/10.1109/ncca.2014.23.
Der volle Inhalt der QuelleMiaoqing, Tan, Andres Arjona und Antti Ylä-Jääski. „Real-Time Service Migration for Voice over IP Services“. In 2008 The Second International Conference on Mobile Ubiquitous Computing, Systems, Services and Technologies (UBICOMM). IEEE, 2008. http://dx.doi.org/10.1109/ubicomm.2008.59.
Der volle Inhalt der QuelleTan, Lizhuang, Wei Su, Yanwen Liu, Xiaochuan Gao, Na Li und Wei Zhang. „Proactive Connection Migration in QUIC“. In MobiQuitous '20: Computing, Networking and Services. New York, NY, USA: ACM, 2020. http://dx.doi.org/10.1145/3448891.3448900.
Der volle Inhalt der QuelleGao, Zhipeng, Jie Meng, Qian Wang und Yang Yang. „Service Migration for Deadline-Varying User-Generated Data in Mobile Edge-Clouds“. In 2018 IEEE World Congress on Services (SERVICES). IEEE, 2018. http://dx.doi.org/10.1109/services.2018.00039.
Der volle Inhalt der Quelle„Analysing the Migration Time of Live Migration of Multiple Virtual Machines“. In 4th International Conference on Cloud Computing and Services Science. SCITEPRESS - Science and and Technology Publications, 2014. http://dx.doi.org/10.5220/0004951605900597.
Der volle Inhalt der QuelleBerichte der Organisationen zum Thema "Migration de Services"
Godenau, Dirk. Migration and the economy. Observatorio de la Inmigración de Tenerife. Departamento de Geografía e Historia. Universidad de La Laguna. Tenerife, 2020. http://dx.doi.org/10.25145/r.obitfact.2020.02.
Der volle Inhalt der QuelleSanthya, K. G., A. J. Francis Zavier, Shilpi Rampal und Avishek Hazra. Promoting safe overseas labour migration: Lessons from ASK’s safe migration project in India. Population Council, 2022. http://dx.doi.org/10.31899/sbsr2022.1038.
Der volle Inhalt der QuelleBakhtiar, M. Mehrab, Abu Sonchoy, Muhammad Meki und Simon Quinn. Virtual Migration through Online Freelancing: Evidence from Bangladesh. Digital Pathways at Oxford, August 2021. http://dx.doi.org/10.35489/bsg-dp-wp_2021/03.
Der volle Inhalt der QuelleHilbrecht, Margo, und Norah Keating. Migration and Urbanization Trends and Family Wellbeing in Canada: A Focus on Disability and Indigenous Issues. The Vanier Institute of the Family, Dezember 2022. http://dx.doi.org/10.61959/q220119z.
Der volle Inhalt der QuelleCoombs, Elizabeth, Orazio J. Bellettini Cedeño und Paul E. Carrillo. Stay Public or Go Private?: A Comparative Analysis of Water Services between Quito and Guayaquil. Inter-American Development Bank, August 2007. http://dx.doi.org/10.18235/0011284.
Der volle Inhalt der QuelleHilbrecht, Margo, und Norah Keating. Tendances en matière de migration et d’urbanisation en lien avec le bien-être des familles au Canada : Regard sur l’incapacité et les questions autochtones. The Vanier Institute of the Family, Dezember 2022. http://dx.doi.org/10.61959/q220119a.
Der volle Inhalt der QuelleOeur, Il, Sochanny Hak, Soeun Cham, Damnang Nil und Marina Apgar. Exploring the Nexus of Covid-19, Precarious Migration and Child Labour on the Cambodian-Thai Border. Institute of Development Studies, Juni 2022. http://dx.doi.org/10.19088/ids.2022.035.
Der volle Inhalt der QuelleGu, Yuanyuan, und Jhorland Ayala-García. Emigration and Tax Revenue. Banco de la República de Colombia, Juli 2022. http://dx.doi.org/10.32468/dtseru.312.
Der volle Inhalt der QuellePolakowski, Michał, und Emma Quinn. Responses to irregularly staying migrants in Ireland. ESRI, Mai 2022. http://dx.doi.org/10.26504/rs140.
Der volle Inhalt der QuelleOleksiuk, Vasyl P., Olesia R. Oleksiuk, Oleg M. Spirin, Nadiia R. Balyk und Yaroslav P. Vasylenko. Some experience in maintenance of an academic cloud. [б. в.], Juni 2021. http://dx.doi.org/10.31812/123456789/4436.
Der volle Inhalt der Quelle