@article{AcevedoDeWiljesReich2017, author = {Acevedo, Walter and De Wiljes, Jana and Reich, Sebastian}, title = {Second-order accurate ensemble transform particle filters}, series = {SIAM journal on scientific computing}, volume = {39}, journal = {SIAM journal on scientific computing}, number = {5}, publisher = {Society for Industrial and Applied Mathematics}, address = {Philadelphia}, issn = {1064-8275}, doi = {10.1137/16M1095184}, pages = {A1834 -- A1850}, year = {2017}, abstract = {Particle filters (also called sequential Monte Carlo methods) are widely used for state and parameter estimation problems in the context of nonlinear evolution equations. The recently proposed ensemble transform particle filter (ETPF) [S. Reich, SIAM T. Sci. Comput., 35, (2013), pp. A2013-A2014[ replaces the resampling step of a standard particle filter by a linear transformation which allows for a hybridization of particle filters with ensemble Kalman filters and renders the resulting hybrid filters applicable to spatially extended systems. However, the linear transformation step is computationally expensive and leads to an underestimation of the ensemble spread for small and moderate ensemble sizes. Here we address both of these shortcomings by developing second order accurate extensions of the ETPF. These extensions allow one in particular to replace the exact solution of a linear transport problem by its Sinkhorn approximation. It is also demonstrated that the nonlinear ensemble transform filter arises as a special case of our general framework. We illustrate the performance of the second-order accurate filters for the chaotic Lorenz-63 and Lorenz-96 models and a dynamic scene-viewing model. The numerical results for the Lorenz-63 and Lorenz-96 models demonstrate that significant accuracy improvements can be achieved in comparison to a standard ensemble Kalman filter and the ETPF for small to moderate ensemble sizes. The numerical results for the scene-viewing model reveal, on the other hand, that second-order corrections can lead to statistically inconsistent samples from the posterior parameter distribution.}, language = {en} } @article{Schorsch2017, author = {Schorsch, Jonathan}, title = {Modern Angels, Avant-Gardes and the Esoteric Archive}, series = {Lux in Tenebris : The Visual and the Symbolic in Western Esotericism}, volume = {23}, journal = {Lux in Tenebris : The Visual and the Symbolic in Western Esotericism}, publisher = {Brill}, address = {Leiden}, isbn = {978-90-04-33495-3}, issn = {1871-1405}, doi = {10.1163/9789004334953_018}, pages = {397 -- 424}, year = {2017}, language = {en} } @article{Kunow2017, author = {Kunow, R{\"u}diger}, title = {The biology of geography disease disease and disease ecologies in the Americas}, series = {The Routledge companion to inter-American studies}, journal = {The Routledge companion to inter-American studies}, publisher = {Routledge}, address = {Abingdon}, isbn = {978-1-315-64498-1}, pages = {296 -- 307}, year = {2017}, language = {en} } @article{Ludwig2017, author = {Ludwig, Joachim}, title = {A subject-theoretical perspective on transformative learning and transformative Bildung}, series = {Transformative learning meets Bildung : an international exchange}, volume = {21}, journal = {Transformative learning meets Bildung : an international exchange}, publisher = {Sense Publishers}, address = {Rotterdam}, isbn = {978-94-6300-795-5}, doi = {10.1007/978-94-6300-797-9_4}, pages = {43 -- 55}, year = {2017}, abstract = {The German theory on transformative Bildung (Koller, Marotzki, \& Sanders, 2007; Koller, 2012; Nohl, 2014) deals with transformation processes in human thinking. Bildung is defined as self and world reference, causing change in the fundamental orientation of people in the course of their biography.}, language = {en} } @article{LangeSchumacherSvorencik2017, author = {Lange, Jerome and Schumacher, Reinhard and Svorencik, Andrej}, title = {From antiquity to modern macro}, series = {History of economic ideas}, volume = {25}, journal = {History of economic ideas}, number = {2}, publisher = {Fabrizio Serra Editore}, address = {Pisa}, issn = {1122-8792}, doi = {10.19272/201706102007}, pages = {171 -- 205}, year = {2017}, abstract = {This survey provides an overview of topics related to the history of economics that have been discussed within the last two years in journal articles. The survey format has been started by History of Economic Ideas last year with the survey by Giulia Bianchi (2016) and is aimed to increase the visibility of research in the history of economics. The emphasis of our survey is on the big three journals in the history of economics: the European Journal of the History of Economic Thought, the Journal of the History of Economic Thought and History of Political Economy. We also included additional journals that frequently publish articles related to the history of economics. These include, in alphabetical order, the Cambridge Journal of Economics, Contributions to Political Economy, Economic Thought, the Erasmus Journal for Philosophy and Economics, History of Economic Thought and Policy, the History of Economics Review, the Journal of Economic Literature, the Journal of Economic Methodology, the Journal of Economic Perspectives, OE conomia, Oxford Economic Papers and Research in the History of Economic Thought and Methodology.}, language = {en} } @misc{ThoelertHoermannAntreichetal.2017, author = {Thoelert, Steffen and H{\"o}rmann, Ulrich and Antreich, Felix and Meurer, Michael}, title = {Ionospheric effects on high gain antenna GNSS measurements}, series = {Proceedings of the 30th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2017)}, journal = {Proceedings of the 30th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2017)}, publisher = {Instituite of Navigation}, address = {Washington}, issn = {2331-5911}, doi = {10.33012/2017.15343}, pages = {3368 -- 3374}, year = {2017}, abstract = {The ionospheric delay of global navigation satellite systems (GNSS) signals typically is compensated by adding a single correction value to the pseudorange measurement of a GNSS receiver. Yet, this neglects the dispersive nature of the ionosphere. In this context we analyze the ionospheric signal distortion beyond a constant delay. These effects become increasingly significant with the signal bandwidth and hence more important for new broadband navigation signals. Using measurements of the Galileo E5 signal, captured with a high gain antenna, we verify that the expected influence can indeed be observed and compensated. A new method to estimate the total electron content (TEC) from a single frequency high gain antenna measurement of a broadband GNSS signal is proposed and described in detail. The received signal is de facto unaffected by multi-path and interference because of the narrow aperture angle of the used antenna which should reduce the error source of the result in general. We would like to point out that such measurements are independent of code correlation, like in standard receiver applications. It is therefore also usable without knowledge of the signal coding. Results of the TEC estimation process are shown and discussed comparing to common TEC products like TEC maps and dual frequency receiver estimates.}, language = {en} } @article{Wyrwa2017, author = {Wyrwa, Ulrich}, title = {Zum Hundertsten nichts Neues}, series = {Deutsche Zeitschrift f{\"u}r Geschichtswissenschaft}, volume = {65}, journal = {Deutsche Zeitschrift f{\"u}r Geschichtswissenschaft}, number = {11}, publisher = {Metropol-Verl.}, address = {Berlin}, issn = {0044-2828}, pages = {955 -- 976}, year = {2017}, language = {de} } @misc{LaubrockEngbertCajar2017, author = {Laubrock, Jochen and Engbert, Ralf and Cajar, Anke}, title = {Gaze-contingent manipulation of the FVF demonstrates the importance of fixation duration for explaining search behavior}, series = {Behavioral and brain sciences : an international journal of current research and theory with open peer commentary}, volume = {40}, journal = {Behavioral and brain sciences : an international journal of current research and theory with open peer commentary}, publisher = {Cambridge Univ. Press}, address = {New York}, issn = {0140-525X}, doi = {10.1017/S0140525X16000145}, pages = {31 -- 32}, year = {2017}, abstract = {Hulleman \& Olivers' (H\&O's) model introduces variation of the functional visual field (FVF) for explaining visual search behavior. Our research shows how the FVF can be studied using gaze-contingent displays and how FVF variation can be implemented in models of gaze control. Contrary to H\&O, we believe that fixation duration is an important factor when modeling visual search behavior.}, language = {en} } @article{HoermanndosSantosMorkischetal.2017, author = {H{\"o}rmann, Simon and dos Santos, Luara Ferreira and Morkisch, Nadine and Jettkowski, Katrin and Sillis, Moran and Devan, Hemakumar and Kanagasabai, Parimala S. and Schmidt, Henning and Kr{\"u}ger, J{\"o}rg and Dohle, Christian and Regenbrecht, Holger and Hale, Leigh and Cutfield, Nicholas J.}, title = {Computerised mirror therapy with Augmented Reflection Technology for early stroke rehabilitation}, series = {Disability and rehabilitation : an international, multidisciplinary journal}, volume = {39}, journal = {Disability and rehabilitation : an international, multidisciplinary journal}, publisher = {Routledge, Taylor \& Francis Group}, address = {Abingdon}, issn = {0963-8288}, doi = {10.1080/09638288.2017.1291765}, pages = {1503 -- 1514}, year = {2017}, abstract = {Purpose: New rehabilitation strategies for post-stroke upper limb rehabilitation employing visual stimulation show promising results, however, cost-efficient and clinically feasible ways to provide these interventions are still lacking. An integral step is to translate recent technological advances, such as in virtual and augmented reality, into therapeutic practice to improve outcomes for patients. This requires research on the adaptation of the technology for clinical use as well as on the appropriate guidelines and protocols for sustainable integration into therapeutic routines. Here, we present and evaluate a novel and affordable augmented reality system (Augmented Reflection Technology, ART) in combination with a validated mirror therapy protocol for upper limb rehabilitation after stroke. Results: The results showed that the combination and application of the Berlin Protocol for Mirror Therapy together with ART was feasible for clinical use. This combination was integrated into the therapeutic plan of subacute stroke patients at the two clinical locations where the second part of this research was conducted. Conclusions: Our findings pave the way for using technology to provide mirror therapy in clinical settings and show potential for the more effective use of inpatient time and enhanced recoveries for patients. IMPLICATIONS FOR REHABILITATION Computerised Mirror Therapy is feasible for clinical use Augmented Reflection Technology can be integrated as an adjunctive therapeutic intervention for subacute stroke patients in an inpatient setting Virtual Rehabilitation devices such as Augmented Reflection Technology have considerable potential to enhance stroke rehabilitation}, language = {en} } @article{FalkKirkLohmannetal.2017, author = {Falk, Thomas and Kirk, Michael and Lohmann, Dirk and Kruger, Bertus and H{\"u}ttich, Christian and Kamukuenjandje, Richard}, title = {The profits of excludability and transferability in redistributive land reform in central Namibia}, series = {Development Southern Africa}, volume = {34}, journal = {Development Southern Africa}, publisher = {Routledge, Taylor \& Francis Group}, address = {Abingdon}, issn = {0376-835X}, doi = {10.1080/0376835X.2016.1269633}, pages = {314 -- 329}, year = {2017}, abstract = {Policies which redistribute property rights to land can improve the well-being of rural households and can have overall growth effects. In many cases, however, land reforms are driven mainly by politically justified objectives. Under such circumstances, little emphasis is placed on whether and, if so, how property rights can increase productivity. Following 18 years of land reform implementation in Namibia, we evaluated 65 beneficiaries in Namibia. We assess to which degree land rights affects their farm income. The study focuses on Namibia's two main commercial land reform instruments, namely the Farm Unit Resettlement Scheme and the Affirmative Action Loan Scheme. We find evidence that the majority of land reform projects are not profitable. Further, our study confirms the importance of the right to restrict land access compared with the right to transfer. The long-term leasehold contract seemingly provides sufficient incentives to make productive use of the land.}, language = {en} }