@techreport{BommesOlfertŞimşeketal.2020, author = {Bommes, Michael and Olfert, Helena and Şim{\c{s}}ek, Yazg{\"u}l and Mehlem, Ulrich and Boneß, Anja and Ayan, M{\"u}ge and Ko{\c{c}}ba{\c{s}}, Dilara}, title = {Literacy acquisition in schools in the context of migration and multilingualism}, editor = {Schroeder, Christoph and S{\"u}rig, Inken}, doi = {10.25932/publishup-47179}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-471793}, pages = {579}, year = {2020}, abstract = {Literacy acquisition is one of the primary goals of school education, and usually it takes place in the national language of the respective country. At the same time, schools accommodate pupils with different home languages who might or might not be fluent in the national language and who start from other linguistic backgrounds in their acquisition of literacy. While it is safe to say that schools with a monolingual policy are not prepared to deal with the factual multilingualism in their classrooms in a systematic way, bilingual pupils have to deal with it nonetheless. The interdisciplinary and comparative research project "Literacy Acquisition in Schools in the Context of Migration and Multilingualism" (LAS) investigated the practical processes of literacy acquisition in two countries, Germany and Turkey, where the monolingual orientation of schools is as much a reality as are the multilingual backgrounds of many of their pupils. The basic assumption was that pupils cope with the ways they are engaged by the school - both socially and academically - based on their cultural and linguistic repertoires acquired biographically, providing them with more or less productive options regarding the acquisition of literary skills. By comparing the literary development of bilingual children with that of their monolingual classmates throughout one school year in the first and the seventh grade in Germany and Turkey, respectively, we found out that the restricting potential of multilingualism is located rather on the part of the schools than on the part of the pupils. While the individual bilingual pupil almost naturally uses his/her home language as a resource for literacy acquisition in the school language, schools still tend to regard the multilingual backgrounds of their pupils as irrelevant or even as an impediment to adequate schooling. We argue that by ignoring or even suppressing the specific linguistic potentials of bilingualism, bilingual pupils are put at a structural disadvantage. This research report is the slightly revised but full version of the final study project report from 2011 that was until now not available as a quotable publication. While several years have passed since the primary research was finalized, the addressed issues have lost none of their relevance. The report is accompanied by numerous publications in the frame of the LAS project, as well as by a web page (https://www.uni-potsdam.de/de/daf/projekte/las), which also contains the presentations from the final LAS-Conference, including valuable discussions of the report from renowed experts in the field.}, language = {en} } @techreport{FaberTipold, author = {Faber, Eike and Tipold, Marc}, title = {Justice carved into the body}, address = {Potsdam}, language = {en} } @techreport{GagrčinSchaetzRakowskietal.2021, author = {Gagrčin, Emilija and Schaetz, Nadja and Rakowski, Niklas and Toth, Roland and Renz, Andr{\´e} and Vladova, Gergana and Emmer, Martin}, title = {We and AI}, publisher = {Weizenbaum Institute for the Networked Society - the German Internet}, address = {Berlin}, doi = {10.34669/wi/1}, pages = {70}, year = {2021}, language = {en} } @techreport{HuđekŽganecPusch2020, author = {Huđek, Helena and Žganec, Krešimir and Pusch, Martin T.}, title = {A review of hydropower dams in Southeast Europe}, series = {Renewable \& sustainable energy reviews}, volume = {117}, journal = {Renewable \& sustainable energy reviews}, publisher = {Elsevier Science}, address = {Amsterdam [u.a.]}, issn = {1364-0321}, doi = {10.1016/j.rser.2019.109434}, pages = {11}, year = {2020}, abstract = {Currently, Southeast Europe (SEE) is witnessing a boom in hydropower plant (HPP) construction, which has not even spared protected areas. As SEE includes global hotspots of aquatic biodiversity, it is expected that this boom will result in a more severe impact on biodiversity than that of other regions. A more detailed assessment of the environmental risks resulting from HPP construction would have to rely on the existence of nearby hydrological and biological monitoring stations. For this reason, we review the distribution and trends of HPPs in the area, as well as the availability of hydrological and biological monitoring data from national institutions useable for environmental impact assessment. Our analysis samples tributary rivers of the Danube in Slovenia, Croatia, Bosnia and Herzegovina, Serbia, and Montenegro, referred to hereafter as TRD rivers. Currently, 636 HPPs are operating along the course of TRD rivers, most of which are small (<1 MW). An additional 1315 HPPs are currently planned to be built, mostly in Serbia and in Bosnia and Herzegovina. As official monitoring stations near HPPs are rare, the impact of those HPPs on river flow, fish and macro-invertebrates is difficult to assess. This manuscript represents the first regional review of hydropower use and of available data sources on its environmental impact for an area outside of the Alps. We conclude that current hydrological and biological monitoring in TRD rivers is insufficient for an assessment of the ecological impacts of HPPs. This data gap also prevents an adequate assessment of the ecological impacts of planned HP projects, as well as the identification of appropriate measures to mitigate the environmental effects of existing HPPs.}, language = {en} } @techreport{Kuettner2014, author = {K{\"u}ttner, Uwe-Alexander}, title = {Opening Up CA - An Interactional Linguist's View on ICCA-14}, series = {Gespr{\"a}chsforschung : Online-Zeitschrift zur verbalen Interaktion}, journal = {Gespr{\"a}chsforschung : Online-Zeitschrift zur verbalen Interaktion}, number = {15}, publisher = {Verlag f{\"u}r Gespr{\"a}chsforschung}, address = {Mannheim}, issn = {1617-1837}, pages = {264 -- 289}, year = {2014}, language = {en} } @techreport{SultanowKochCox2019, author = {Sultanow, Eldar and Koch, Christian and Cox, Sean}, title = {Collatz Sequences in the Light of Graph Theory}, edition = {2nd version}, doi = {10.25932/publishup-43741}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-437416}, pages = {21}, year = {2019}, abstract = {The Collatz conjecture is a number theoretical problem, which has puzzled countless researchers using myriad approaches. Presently, there are scarcely any methodologies to describe and treat the problem from the perspective of the Algebraic Theory of Automata. Such an approach is promising with respect to facilitating the comprehension of the Collatz sequence's "mechanics". The systematic technique of a state machine is both simpler and can fully be described by the use of algebraic means. The current gap in research forms the motivation behind the present contribution. The present authors are convinced that exploring the Collatz conjecture in an algebraic manner, relying on findings and fundamentals of Graph Theory and Automata Theory, will simplify the problem as a whole.}, language = {en} } @techreport{SultanowKochCox2019, author = {Sultanow, Eldar and Koch, Christian and Cox, Sean}, title = {Collatz Sequences in the Light of Graph Theory}, doi = {10.25932/publishup-43008}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-430089}, pages = {15}, year = {2019}, abstract = {The Collatz conjecture is a number theoretical problem, which has puzzled countless researchers using myriad approaches. Presently, there are scarcely any methodologies to describe and treat the problem from the perspective of the Algebraic Theory of Automata. Such an approach is promising with respect to facilitating the comprehension of the Collatz sequences "mechanics". The systematic technique of a state machine is both simpler and can fully be described by the use of algebraic means. The current gap in research forms the motivation behind the present contribution. The present authors are convinced that exploring the Collatz conjecture in an algebraic manner, relying on findings and fundamentals of Graph Theory and Automata Theory, will simplify the problem as a whole.}, language = {en} } @techreport{SultanowKochCox2020, author = {Sultanow, Eldar and Koch, Christian and Cox, Sean}, title = {Collatz Sequences in the Light of Graph Theory}, edition = {3rd version}, doi = {10.25932/publishup-44185}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-441859}, pages = {29}, year = {2020}, abstract = {It is well known that the inverted Collatz sequence can be represented as a graph or a tree. Similarly, it is acknowledged that in order to prove the Collatz conjecture, one must demonstrate that this tree covers all (odd) natural numbers. A structured reachability analysis is hitherto not available. This paper investigates the problem from a graph theory perspective. We define a tree that consists of nodes labeled with Collatz sequence numbers. This tree will be transformed into a sub-tree that only contains odd labeled nodes. The analysis of this tree will provide new insights into the structure of Collatz sequences. The findings are of special interest to possible cycles within a sequence. Next, we describe the conditions which must be fulfilled by a cycle. Finally, we demonstrate how these conditions could be used to prove that the only possible cycle within a Collatz sequence is the trivial cycle, starting with the number 1, as conjectured by Lothar Collatz.}, language = {en} } @techreport{SultanowKochCox2020, author = {Sultanow, Eldar and Koch, Christian and Cox, Sean}, title = {Collatz Sequences in the Light of Graph Theory}, edition = {4th version}, doi = {10.25932/publishup-44325}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-443254}, pages = {31}, year = {2020}, abstract = {It is well known that the inverted Collatz sequence can be represented as a graph or a tree. Similarly, it is acknowledged that in order to prove the Collatz conjecture, one must demonstrate that this tree covers all odd natural numbers. A structured reachability analysis is hitherto not available. This paper investigates the problem from a graph theory perspective. We define a tree that consists of nodes labeled with Collatz sequence numbers. This tree will be transformed into a sub-tree that only contains odd labeled nodes. The analysis of this tree will provide new insights into the structure of Collatz sequences. The findings are of special interest to possible cycles within a sequence. Next, we describe the conditions which must be fulfilled by a cycle. Finally, we demonstrate how these conditions could be used to prove that the only possible cycle within a Collatz sequence is the trivial cycle, starting with the number one, as conjectured by Lothar Collatz.}, language = {en} } @techreport{SultanowKochCox2020, author = {Sultanow, Eldar and Koch, Christian and Cox, Sean}, title = {Collatz Sequences in the Light of Graph Theory}, edition = {Fifth version}, doi = {10.25932/publishup-48214}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-482140}, pages = {47}, year = {2020}, abstract = {It is well known that the inverted Collatz sequence can be represented as a graph or a tree. Similarly, it is acknowledged that in order to prove the Collatz conjecture, one must demonstrate that this tree covers all odd natural numbers. A structured reachability analysis is hitherto unavailable. This paper investigates the problem from a graph theory perspective. We define a tree that consists of nodes labeled with Collatz sequence numbers. This tree will be transformed into a sub-tree that only contains odd labeled nodes. Furthermore, we derive and prove several formulas that can be used to traverse the graph. The analysis covers the Collatz problem both in it's original form 3x + 1 as well as in the generalized variant kx + 1. Finally, we transform the Collatz graph into a binary tree, following the approach of Kleinnijenhuis, which could form the basis for a comprehensive proof of the conjecture.}, language = {en} } @techreport{SultanowVolkovCox2017, author = {Sultanow, Eldar and Volkov, Denis and Cox, Sean}, title = {Introducing a Finite State Machine for processing Collatz Sequences}, edition = {1st version}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-399223}, year = {2017}, abstract = {The present work will introduce a Finite State Machine (FSM) that processes any Collatz Sequence; further, we will endeavor to investigate its behavior in relationship to transformations of a special infinite input. Moreover, we will prove that the machine's word transformation is equivalent to the standard Collatz number transformation and subsequently discuss the possibilities for use of this approach at solving similar problems. The benefit of this approach is that the investigation of the word transformation performed by the Finite State Machine is less complicated than the traditional number-theoretical transformation.}, language = {en} } @techreport{SultanowVolkovCox2017, author = {Sultanow, Eldar and Volkov, Denis and Cox, Sean}, title = {Introducing a Finite State Machine for processing Collatz Sequences}, edition = {2nd version}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-404738}, pages = {17}, year = {2017}, abstract = {The present work will introduce a Finite State Machine (FSM) that processes any Collatz Sequence; further, we will endeavor to investigate its behavior in relationship to transformations of a special infinite input. Moreover, we will prove that the machine's word transformation is equivalent to the standard Collatz number transformation and subsequently discuss the possibilities for use of this approach at solving similar problems. The benefit of this approach is that the investigation of the word transformation performed by the Finite State Machine is less complicated than the traditional number-theoretical transformation.}, language = {en} } @techreport{ZerfassStieglitzClausenetal.2023, author = {Zerfaß, Ansgar and Stieglitz, Stefan and Clausen, S{\"u}nje and Ziegele, Daniel and Berger, Karen}, title = {Communications trend radar 2023}, series = {Communication insights}, volume = {17}, journal = {Communication insights}, publisher = {Academic Society for Management \& Communication}, address = {Leipzig}, issn = {2749-893X}, doi = {10419/270993}, pages = {35}, year = {2023}, abstract = {How do social changes, new technologies or new management trends affect communication work? A team of researchers at Leipzig University and the University of Potsdam (Germany) observed new developments in related disciplines. As a result, the five most important trends for corporate communications are identified annually and published in the Communications Trend Radar. Thus, Communications managers can identify challenges and opportunities at an early stage, take a position, address issues and make decisions. For 2023, the Communications Trend Radar identifies five key trends for corporate communications: State Revival, Scarcity Management, Unimagination, Parallel Worlds, Augemented Workflows.}, language = {en} }