@article{BlasimannBuschHenleetal.2022, author = {Blasimann, Angela and Busch, Aglaja and Henle, Philipp and Bruhn, Sven and Vissers, Dirk and Baur, Heiner}, title = {Neuromuscular control during stair descent and artificial tibial translation after acute ACL rupture}, series = {Orthopaedic journal of sports medicine}, volume = {10}, journal = {Orthopaedic journal of sports medicine}, number = {10}, publisher = {Sage}, issn = {2325-9671}, doi = {10.1177/23259671221123299}, pages = {13}, year = {2022}, abstract = {Background: Anterior cruciate ligament (ACL) rupture has direct effect on passive and active knee stability and, specifically, stretch-reflex excitability. Purpose/Hypothesis: The purpose of this study was to investigate neuromuscular activity in patients with an acute ACL deficit (ACL-D group) compared with a matched control group with an intact ACL (ACL-I group) during stair descent and artificially induced anterior tibial translation. It was hypothesized that neuromuscular control would be impaired in the ACL-D group. Study Design: Cross-sectional study; Level of evidence, 3. Methods: Surface electromyographic (EMG) activity of the vastus medialis (VM), vastus lateralis (VL), biceps femoris (BF), and semitendinosus (ST) muscles was recorded bilaterally in 15 patients with ACL-D (mean, 13.8 days [range, 7-21 days] since injury) and 15 controls with ACL-I during stair descent and artificially induced anterior tibial translation. The movements of stair descent were divided into preactivity, weight acceptance, and push-off phases. Reflex activity during anterior tibial translation was split into preactivity and short, medium, and late latency responses. Walking on a treadmill was used for submaximal EMG normalization. Kruskal-Wallis test and post hoc analyses with Dunn-Bonferroni correction were used to compare normalized root mean square values for each muscle, limb, movement, and reflex phase between the ACL-D and ACL-I groups. Results: During the preactivity phase of stair descent, the hamstrings of the involved leg of the ACL-D group showed 33\% to 51\% less activity compared with the matched leg and contralateral leg of the ACL-I group (P <.05). During the weight acceptance and push-off phases, the VL revealed a significant reduction (approximately 40\%) in the involved leg of the ACL-D group compared with the ACL-I group. At short latency, the BF and ST of the involved leg of the ACL-D group showed a significant increase in EMG activity compared with the uninvolved leg of the ACL-I group, by a factor of 2.2 to 4.6. Conclusion: In the acute phase after an ACL rupture, neuromuscular alterations were found mainly in the hamstrings of both limbs during stair descent and reflex activity. The potential role of prehabilitation needs to be further studied.}, language = {en} } @article{ShikangalahMapaniMapaureetal.2021, author = {Shikangalah, Rosemary and Mapani, Benjamin and Mapaure, Isaac and Herzschuh, Ulrike}, title = {Responsiveness of Dichrostachys cinerea to seasonal variations in temperature and rainfall in central Namibia}, series = {Flora}, volume = {286}, journal = {Flora}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0367-2530}, doi = {10.1016/j.flora.2021.151974}, pages = {7}, year = {2021}, abstract = {Woody plants provide natural archives of climatic variation which can be investigated by applying dendroclimatological methods. Such studies are limited in Southern Africa but have great potential of improving our understanding of past climates and plant functional adaptations in the region. This study therefore investigated the responsiveness of Dichrostachys cinerea to seasonal variations in temperature and rainfall at two sites in central Namibia, Waterberg and Kuzikus. Dichrostachys cinerea is one of the encroacher species thriving well in Namibia. A moving correlation and response function analysis were used to test its responsiveness to seasonal climatic variations over time. Dichrostachys cinerea growth rings showed relationships to late summer warming, lasting up to half of the rainy season. The results also revealed that past temperatures had been fluctuating and their influence on growth rings had been intensifying over the years, but to varying extents between the two sites. Temperature was a more important determinant of ring growth at the drier site (Kuzikus), while rainfall was more important at the wetter site (Waterberg). Growth ring responsiveness to rainfall was not immediate but showed a rather lagged pattern. We conclude that D. cinerea differentially responds to variations in rainfall and temperature across short climatic gradients. This study showed that the species, due to its somewhat wide ecological amplitude, has great potential for dendroclimatological studies in tropical regions.}, language = {en} } @article{BlaesiusFriedrichKrejcaetal.2022, author = {Bl{\"a}sius, Thomas and Friedrich, Tobias and Krejca, Martin S. and Molitor, Louise}, title = {The impact of geometry on monochrome regions in the flip Schelling process}, series = {Computational geometry}, volume = {108}, journal = {Computational geometry}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0925-7721}, doi = {10.1016/j.comgeo.2022.101902}, year = {2022}, abstract = {Schelling's classical segregation model gives a coherent explanation for the wide-spread phenomenon of residential segregation. We introduce an agent-based saturated open-city variant, the Flip Schelling Process (FSP), in which agents, placed on a graph, have one out of two types and, based on the predominant type in their neighborhood, decide whether to change their types; similar to a new agent arriving as soon as another agent leaves the vertex. We investigate the probability that an edge {u,v} is monochrome, i.e., that both vertices u and v have the same type in the FSP, and we provide a general framework for analyzing the influence of the underlying graph topology on residential segregation. In particular, for two adjacent vertices, we show that a highly decisive common neighborhood, i.e., a common neighborhood where the absolute value of the difference between the number of vertices with different types is high, supports segregation and, moreover, that large common neighborhoods are more decisive. As an application, we study the expected behavior of the FSP on two common random graph models with and without geometry: (1) For random geometric graphs, we show that the existence of an edge {u,v} makes a highly decisive common neighborhood for u and v more likely. Based on this, we prove the existence of a constant c>0 such that the expected fraction of monochrome edges after the FSP is at least 1/2+c. (2) For Erdős-R{\´e}nyi graphs we show that large common neighborhoods are unlikely and that the expected fraction of monochrome edges after the FSP is at most 1/2+o(1). Our results indicate that the cluster structure of the underlying graph has a significant impact on the obtained segregation strength.}, language = {en} } @misc{WachsWrightGamezGuadix2022, author = {Wachs, Sebastian and Wright, Michelle F. and G{\´a}mez-Guadix, Manuel}, title = {Call for special issue papers: predictors, consequences, and prevention of hate speech and fake news involvement across the lifespan}, series = {Cyberpsychology, behavior and social networking}, volume = {25}, journal = {Cyberpsychology, behavior and social networking}, number = {3}, publisher = {Mary Ann Liebert}, issn = {2152-2715}, doi = {10.1089/cyber.2022.29243.cfp}, pages = {159 -- 160}, year = {2022}, language = {en} } @article{GrumGronau2024, author = {Grum, Marcus and Gronau, Norbert}, title = {The impact of knowledge characteristics on process performance}, series = {Business process management journal}, volume = {30}, journal = {Business process management journal}, number = {4}, publisher = {Emerald}, address = {Bingley}, issn = {1463-7154}, doi = {10.1108/BPMJ-10-2023-0853}, pages = {1088 -- 1110}, year = {2024}, abstract = {Purpose With shorter product cycles and a growing number of knowledge-intensive business processes, time consumption is a highly relevant target factor in measuring the performance of contemporary business processes. This research aims to extend prior research on the effects of knowledge transfer velocity at the individual level by considering the effect of complexity, stickiness, competencies, and further demographic factors on knowledge-intensive business processes at the conversion-specific levels. Design/methodology/approach We empirically assess the impact of situation-dependent knowledge transfer velocities on time consumption in teams and individuals. Further, we issue the demographic effect on this relationship. We study a sample of 178 experiments of project teams and individuals applying ordinary least squares (OLS) for regression analysis-based modeling. Findings The authors find that time consumed at knowledge transfers is negatively associated with the complexity of tasks. Moreover, competence among team members has a complementary effect on this relationship and stickiness retards knowledge transfers. Thus, while demographic factors urgently need to be considered for effective and speedy knowledge transfers, these influencing factors should be addressed on a conversion-specific basis so that some tasks are realized in teams best while others are not. Guidelines and interventions are derived to identify best task realization variants, so that process performance is improved by a new kind of process improvement method. Research limitations/implications This study establishes empirically the importance of conversion-specific influence factors and demographic factors as drivers of high knowledge transfer velocities in teams and among individuals. The contribution connects the field of knowledge management to important streams in the wider business literature: process improvement, management of knowledge resources, design of information systems, etc. Whereas the model is highly bound to the experiment tasks, it has high explanatory power and high generalizability to other contexts. Practical implications Team managers should take care to allow the optimal knowledge transfer situation within the team. This is particularly important when knowledge sharing is central, e.g. in product development and consulting processes. If this is not possible, interventions should be applied to the individual knowledge transfer situation to improve knowledge transfers among team members. Social implications Faster and more effective knowledge transfers improve the performance of both commercial and non-commercial organizations. As nowadays, the individual is faced with time pressure to finalize tasks, the deliberated increase of knowledge transfer velocity is a core capability to realize this goal. Quantitative knowledge transfer models result in more reliable predictions about the duration of knowledge transfers. These allow the target-oriented modification of knowledge transfer situations so that processes speed up, private firms are more competitive and public services are faster to citizens. Originality/value Time consumption is an increasingly relevant factor in contemporary business but so far not been explored in experiments at all. This study extends current knowledge by considering quantitative effects on knowledge velocity and improved knowledge transfers.}, language = {en} } @misc{Koehne2023, author = {K{\"o}hne, Lea}, title = {(State) immunity for Palestine?}, series = {Verfassungsblog : on matters constitutional}, journal = {Verfassungsblog : on matters constitutional}, publisher = {Max Steinbeis Verfassungsblog gGmbH}, address = {Berlin}, issn = {2366-7044}, doi = {10.59704/c6b1bf054163ad38}, pages = {5}, year = {2023}, language = {en} } @misc{laGrange2022, author = {la Grange, Anna}, title = {Afrikaner-sondebok? Die lewe van Hans van Rensburg, Ossewabrandwagleier}, series = {South african journal of cultural history}, volume = {36}, journal = {South african journal of cultural history}, number = {2}, publisher = {South African Society for Cultural History}, address = {Pretoria}, doi = {10.54272/sach.2022.v36n2a12}, pages = {197 -- 198}, year = {2022}, language = {en} } @article{EbelBald2022, author = {Ebel, Kenny and Bald, Ilko}, title = {Low-energy (5-20 eV) electron-induced single and double strand breaks in well-defined DNA sequences}, series = {Journal of physical chemistry letters}, volume = {13}, journal = {Journal of physical chemistry letters}, number = {22}, publisher = {American Chemical Society}, address = {Washington, DC}, issn = {1948-7185}, doi = {10.1021/acs.jpclett.2c00684}, pages = {4871 -- 4876}, year = {2022}, abstract = {Ionizing radiation is used in cancer radiation therapy to effectively damage the DNA of tumors. The main damage is due to generation of highly reactive secondary species such as low-energy electrons (LEEs). The accurate quantification of DNA radiation damage of well-defined DNA target sequences in terms of absolute cross sections for LEE-induced DNA strand breaks is possible by the DNA origami technique; however, to date, it is possible only for DNA single strands. In the present work DNA double strand breaks in the DNA sequence 5 '-d(CAC)4/5 ' d(GTG)4 are compared with DNA single strand breaks in the oligonucleotides 5 '-d(CAC)4 and 5 '-d(GTG)4 upon irradiation with LEEs in the energy range from 5 to 20 eV. A maximum of strand break cross section was found around 7 and 10 eV independent of the DNA sequence, indicating that dissociative electron attachment is the underlying mechanism of strand breakage and confirming previous studies using plasmid DNA.}, language = {en} } @incollection{SchmidtWellenburg2022, author = {Schmidt-Wellenburg, Christian}, title = {Democratization or politicization? The changing face of political-economic expertise in European expert groups, 1966-2017}, series = {The condition of democracy, Volume 1: Neoliberal politics and sociological perspectives}, booktitle = {The condition of democracy, Volume 1: Neoliberal politics and sociological perspectives}, editor = {Mackert, J{\"u}rgen and Wolf, Hannah and Turner, Bryan S.}, publisher = {Routledge}, address = {Abingdon}, isbn = {978-1-003-15836-3}, doi = {10.4324/9781003158363-7}, pages = {106 -- 128}, year = {2022}, language = {en} } @misc{Wyrwa2022, author = {Wyrwa, Ulrich}, title = {Music for the "Axis". German-Italian music relations under Hitler and Mussolini until 1943}, series = {Quest-issues in contemporary jewish history}, journal = {Quest-issues in contemporary jewish history}, number = {22}, publisher = {Fondazione Centro Documentazione Ebraica Contemporanea}, address = {Milano}, issn = {2037-741X}, doi = {10.48248/issn.2037-741X/13762}, pages = {222 -- 225}, year = {2022}, language = {en} }