bluuebunny/crossref_metadata_2025_split huggingface dataset:
On compensation for wave-induced roll in dynamic positioning control
Authors: Nordvik Kristoffer , Johansen Tor A. 
Published: September 2022

AbstractDynamic positioning (DP) for station-keeping control keeps the position and heading of the vessel constant regardless of environmental disturbances from wind, waves and currents. If the point of interest on the vessel has a significant vertical offset, it will be influenced also by the roll, pitch and heave motions. Although such motions are usually neglected in DP control, there is an opportunity to also influence these since thrusters will not only influence the horizontal plane motion of a vessel, but also generate roll and pitch moments. In this paper, we formulate the problem of DP control when explicitly considering the first-order wave-induced roll motion and thruster roll moment. It is shown that the control performance can be significantly improved when the DP system’s point of interest, and the location of the thrusters, have a significant vertical offset compared to the vertical position of the center of rotation. The proposed control algorithm is demonstrated in a realistic simulation of a relatively small ship during launch-and-recovery of a remotely operated vehicle (ROV) where the DP’s point of interest is at the lower end of the launch-and-recovery-system (LARS) that extends below the keel of the ship. It is shown that the positioning performance can be improved with 20–45$$\%$$
%
reduced error, depending on the sea state.
Flächenziele für die Windenergie: Wie zielführend ist das neue Wind-an-Land-Gesetz?
Authors: Reutter Felix , Geiger Charlotte , Lehmann Paul , Meier Jan-Niklas , Tafarte Philip 
Published: September 2022

ZusammenfassungDie Ausbauziele für die Windenergie an Land sind von der Bundesregierung für die kommenden Jahre zuletzt mehr als verdreifacht worden. Gleichzeitig stockt aber seit einigen Jahren der tatsächliche Ausbau der Windenergie in Deutschland. Wesentlicher Hemmschuh für den Ausbau ist, dass zu wenige Flächen für Windenergieanlagen ausgewiesen werden. Um dieses Problem zu lösen, ist nun das Wind-an-Land-Gesetz verabschiedet worden. Dieses gibt den Bundesländern Flächenziele vor, damit bundesweit insgesamt 2 % der Landesfläche für Windenergie ausgewiesen werden. Ein Schritt in die richtige Richtung. Es bleibt aber zweifelhaft, ob das angelegte Zeit-Mengen-Gerüst konform mit den Windenergie-Ausbauzielen des Bundes ist.
Parität zwischen Vakanzen und Arbeitslosen am deutschen Arbeitsmarkt fast erreicht
Authors: Kubis Alexander 
Published: September 2022

AbstractWith 1.9 million vacancies available to 2.3 million registered unemployed persons, parity in the German labour market has almost been achieved. Such parity however may produce labour shortages that go far beyond small bottlenecks, which are limited to particular regions and industries. In the short term, labour demand may be curtailed by temporary risks such as an energy crisis. In the medium term however, projections indicate that demographic change will significantly reduce the labour supply. Maintaining the current high level of economic activity therefore requires an all-out effort to raise the potential supply of skilled workers. (Re-)training and further education are but two elements of such an effort that work by also reducing the skill-based mismatch that has risen from ecological and technological change.
Landslide activity detection based on Sentinel-1 PSI datasets of the Ground Motion Service Germany—the Trittenheim case study
Authors: Kalia Andre Cahyadi 
Published: September 2022

AbstractSpaceborne interferometric synthetic aperture radar has been proven to be able to monitor slow deforming landslides with mm-precision. Continental- and nationwide-scale Sentinel-1 PSI (persistent scatterer interferometry) datasets with millions of deformation time series are publicly available, e.g., via the European Ground Motion Service or the Ground Motion Service Germany. This creates the possibility for an increased routine use of PSI for landslide applications. However, the use of PSI datasets is often done by visual inspection. The huge amount of measurements makes visual inspection, subjective, time-consuming, and error prone due to outliers. This study demonstrates how spatial and temporal patterns of the PSI velocity and time series can be detected in a semi-automatic way to improve objective information extraction. Therefore, two landslides, namely, Trittenheim and Piesport landslides, in Germany are analyzed using Sentinel-1 PSI datasets from the Ground Motion Service Germany. The post-processing technique semi-automatically detects spatial clusters of deforming PS with a maximum LoS velocity of 18 and 7 mm/a in Trittenheim and Piesport landslides, respectively. Furthermore, a correlation and time-lag between the surface deformation and a potential triggering factor is found. Results show that an increase in climatic water balance accelerates landslide deformation at the investigated locations. Results are verified by a second independent Sentinel-1 PSI dataset from the Ground Motion Service Germany.
Managing buyer experience in a buyer–supplier relationship in MSMEs and SMEs
Authors: Kumar Prashant , Kushwaha Amit Kumar , Kar Arpan Kumar , Dwivedi Yogesh K. , Rana Nripendra P 
Published: September 2022

AbstractMonitoring buyer experience provides competitive advantages for suppliers as buyers explore the market before reaching a salesperson. Still, not many B2B suppliers monitor their buyers’ expectations throughout their procurement journey, especially in MSMEs and SMEs. In addition, the inductive research on evaluating buyer experience in buyer–supplier relationships is minimal, leaving an unexplored research area. This study explores antecedents of buyer experience during the buyer–supplier relationship in MSMEs and SMEs. Further, we investigate the nature of the influence of extracted precursors on the buyer experience. Firstly, we obtain the possible antecedents from the literature on buyer–supplier experience and supplier selection criteria. We also establish hypotheses based on transaction cost theory, resource-based view (RBV), and information processing view. Secondly, we employ an investigation based on the social media analytics-based approach to uncover the antecedents of buyer experience and their nature of influence on MSMEs and SME suppliers. We found that buyer experience is influenced by sustainable orientation, management capabilities (such as crisis management and process innovation), and suppliers’ technology capabilities (digital readiness, big data analytical capability).
Second-order productivity, second-order payoffs, and the Owen value
Authors: Casajus André , Tido Takeng Rodrigue 
Published: September 2022

AbstractWe introduce the concepts of the components’ second-order productivities in cooperative games with transferable utility (TU games) with a coalition structure (CS games) and of the components’ second-order payoffs for one-point solutions for CS games as generalizations of the players’ second-order productivities in TU games and of the players’ second-order payoffs for one-point solutions for TU games (Casajus in Discrete Appl Math 304:212–219, 2021). The players’ second-order productivities are conceptualized as second-order marginal contributions, that is, how one player affects another player’s marginal contributions to coalitions containing neither of them by entering these coalitions. The players’ second-order payoffs are conceptualized as the effect of one player leaving the game on the payoff of another player. Analogously, the components’ second-order productivities are conceptualized as their second-order productivities in the game between components; the components’ second-order payoffs are conceptualized as their second-order payoffs in the game between components. We show that the Owen value is the unique efficient one-point solution for CS games that reflects the players’ and the components’ second-order productivities in terms of their second-order payoffs.
Determinants of victory in Esports - StarCraft II
Authors: Białecki Andrzej , Gajewski Jan , Białecki Piotr , Phatak Ashwin , Memmert Daniel 
Published: September 2022

AbstractEsports offer a unique opportunity to conduct human performance studies, as they use modern hardware and software as an operation platform. Insights on gameplay and underlying processes may push the development of new and optimal practice methods. The aim of this study was to investigate performance indicators from in-game data to predict the outcome of the matches in StarCraft II: Legacy of The Void.Data from 6509 games (game records) provided by 5 players at the level of Master or GrandMaster were used. The distribution of analyzed players concerning the preferred in-game race was as follows: “Protoss” (n = 3), “Zerg” (n = 1), “Terran” (n = 1). Each game record contained data for both the winner and the loser. In total, 3719 game records and 9 performance indicators were obtained after applying the inclusion criteria.Logistic regression with 5-fold cross-validation was performed to predict the game outcome. The model was able to discriminate the game outcome (won, lost) with an out-of-sample accuracy of 0.728 ± 0.021. The performance indicators which showed the strongest effect in predicting the game outcome were “minerals lost army” [p-value< 0.001, std_odds_ratio: 0.069], “minerals killed army” [p-value< 0.001, std_odds_ratio: 6.446], “minerals used current army” [p-value< 0.001, std_odds_ratio: 4.081], and “minerals killed economy” [p-value< 0.001, std_odds_ratio: 2.896]. It seems evident that winner optimized interaction with an opponent by keeping his/her own army intact while inflicting damage to the opponent’s army or economy. In conclusion, the effective use of the army, based on optimizing the ratio between units lost and units killed, may be significant in predicting the game outcome.
Electromagnetic mode matching in a Wilson basis: optical fiber connections with a gap
Authors: Floris Sander J. , de Hon Bastiaan P. , van Beurden Martijn C. , Bolhaar T. 
Published: September 2022

AbstractOn the basis of two optical fibers with an optional lateral and longitudinal displacement in a homogeneous background medium, we describe a general full-vectorial Wilson-basis discretized mode-matching method that evaluates the converged electromagnetic fields after all resonances in the possible gap cavity have settled. Wilson basis functions feature strong localization in both the spatial and the spectral domain, which allows for efficient modal electromagnetic field expansions, adequate truncation of field propagation operators, and sparse translation operators, which in turn allow to make ad hoc electromagnetic field-matching operators. For physical contact connections between single-mode fibers with a mode-field diameter mismatch, we obtain attenuation curves that are right between those obtained from approximation methods that either effectively match the electric field or the magnetic field under the assumption of a vanishing reflection. For fibers separated by a growing gap, constructive and destructive interference patterns in the cavity are computed by the successive application of Love’s equivalence principle and the propagation operator. By leveraging the physical width of the Wilson basis functions and the stepsize of the propagation operator, the initial operators may be reused in solving the interface problem for other wavelengths. For multi-mode fiber connections, we provide attenuation curves on a modal electromagnetic field level, as well as for overfilled and core-confined target encircled-flux compliant launches. A comparison to geometrical-optics based approaches shows attenuation differences in the order of several hundredth of a dB, and although that is small, it is significant for modern connection attenuation specifications. In the final example of connections between regular and trench-assisted multi-mode fibers, we notice that the relative change in the cumulative near-field power distribution can be significant, despite a marginally small attenuation. The influence of a core diameter and/or numerical aperture mismatch can be examined with a deliberate lateral misalignment.
Attitudes on languages, identities and politics at the Ukrainian Black Sea coast in 2020/21
Authors: Zeller Jan Patrick 
Published: September 2022

AbstractThis study deals with attitudes and opinions of the population on the Ukrainian Black Sea coast in 2020/2021, a good year before the Russian invasion of Ukraine. The basis is a sociological survey conducted in the regions of Odesa, Mykolajiv and Kherson with 1,200 respondents. These regions are a clear target of the Russian offensive against Ukraine, on the grounds of an alleged ideological and linguistic affinity of these areas with Russia. The attitudes and opinions sought in the study cover three domains: firstly, attitudes and opinions on language policy, secondly, on Ukrainian autonomy and identity and the role played by languages in this context, and thirdly, Ukraine’s geopolitical orientation. Respondents were grouped according to their “ethnic/national” self-identification and language preferences, and a comparison was made. Overall, the attitudes of the respondents showed a clear identification with Ukraine and the Ukrainian language and a skepticism towards the Russian state, but by no means a hostile attitude towards the Russian language. A picture emerges that clearly contradicts Russian propaganda and also puts into perspective the difference between southern Ukraine and the center and the west, which has often been emphasized in the past.
Distributed Electro-Mechanical Coupling Effects in a Dielectric Elastomer Membrane Array
Authors: Neu J. , Croce S. , Willian T. , Hubertus J. , Schultes G. , Seelecke S. , Rizzello G. 
Published: September 2022

AbstractBackgroundDielectric elastomer (DE) transducers permit to effectively develop large-deformation, energy-efficient, and compliant mechatronic devices. By arranging many DE elements in an array-like configuration, a soft actuator/sensor system capable of cooperative features can be obtained. When many DE elements are densely packed onto a common elastic membrane, spatial coupling effects introduce electro-mechanical interactions among neighbors, which strongly affect the system actuation and sensing performance. To effectively design cooperative DE systems, those coupling effects must be systematically characterized and understood first.ObjectiveAs a first step towards the development of complex cooperative DE systems, in this work we present a systematic characterization of the spatial electro-mechanical interactions in a 1-by-3 array of silicone DEs. More specifically, we investigate how the force and capacitance characteristics of each DE in the array change when its neighbors are subject to different types of mechanical or electrical loads. Force and capacitance are chosen for this investigation, since those quantities are directly tied to the DE actuation and sensing behaviors, respectively.MethodsAn electro-mechanical characterization procedure is implemented through a novel experimental setup, which is specifically developed for testing soft DE arrays. The setup allows to investigate how the force and capacitance characteristics of each DE are affected by static deformations and/or electrical voltages applied to its nearby elements. Different combinations of electro-mechanical loads and DE neighbors are considered in an extensive experimental campaign.ResultsThe conducted investigation shows the existence of strong electro-mechanical coupling effects among the different array elements. The interaction intensity depends on multiple parameters, such as the distance between active DEs or the amount of deformation/voltage applied to the neighbors, and provides essential information for the design of array actuators. In some cases, such coupling effects may lead to changes in force up to 9% compared to the reference configuration. A further coupling is also observed in the DE capacitive response, and opens up the possibility of implementing advanced and/or distributed self-sensing strategies in future applications.ConclusionBy means of the conducted experiments, we clearly show that the actuation and sensing characteristics of each DE in the array are strongly influenced by the electro-mechanical loading state of its neighbors. The coupling effects may significantly affect the overall cooperative system performance, if not properly accounted for during the design. In future works, the obtained results will allow developing cooperative DE systems which are robust to, and possibly take advantage of, such spatial coupling effects.
Structuring lessons as an aspect of pre-service teachers’ planning competence: A scaling-up analysis
Authors: Krepf Matthias , König Johannes 
Published: September 2022

AbstractLesson planning is an essential part of teachers’ daily work. In this study, we focus onstructuringas an aspect of lesson planning, which generally can be defined as a clear, recognizable organization of instruction into individual phases and segments in which the teacher gradually builds up the complexity of the knowledge to be acquired and ensures a smooth flow of instruction through appropriate sequencing. In a previous study (Krepf and König in press), we conceived structuring as an aspect of lesson planning. To test the validity and reliability of this study’s findings, a scaling-up study was conducted to determine whether structuring as an aspect of planning could be modelled reliably using a different and larger sample. In this study, 310 written lesson plans created by pre-service teachers during induction (172 at T1 [first lesson plan]; 138 at T2 [last lesson plan/state examination]) from North Rhine-Westphalia (NRW) and Berlin derived from thePlanvoLL‑Dproject (König et al. 2020a, 2020b) comprised the study’s data. The lesson plans were evaluated through content analysis using deductively formed categories. Afterward, the coding was quantified and analyzed using item response theory (IRT) scaling. The results indicated that two subscales could be separated in terms of content: a “contextualization” scale and a “phasing” scale. Furthermore, three explication levels could be distinguished. Measures of lesson structure planning increased during induction significantly with practical relevance. This study contributes to the research on modelling and measuring pre-service teachers’ planning competence.
Recycling warning! Reconfiguring the toxic politics of a circular economy
Authors: Johansson Nils 
Published: September 2022

AbstractThe ambition to retain products and materials for as long as possible in a circular economy may dilute, disperse and accumulate hazardous substances. However, in addition to exemptions for circulated products, the regulatory regime targets only a small percentage of all hazardous substances. This emerging problem is just one of many examples why the focus needs to shift from the win–win potential of a circular economy towards a reflexive consideration of tensions, trade-offs and policy conflicts between increased circulation and other topical issues, such as, in this case, reduced dispersion of hazardous substances.
The mediation role of shame proneness in the association between perceived parenting and the severity of addictive behaviors: risk or protective factor?
Authors: Veneziani Giorgio , Ciacchella Chiara , Campedelli Virginia , Lai Carlo 
Published: September 2022

AbstractAdverse early interactions with parents deeply affect the socio-emotional development of an individual, leading to feelings of inferiority and negatively influencing the development of self-conscious emotions, such as shame. Moreover, dysfunctional parenting was found in the histories of people suffering from substance and behavioral addictions. In this context, there is currently no agreement in the literature regarding the role of shame proneness on the severity of the addiction. The present study aimed to evaluate the mediating (risk or protective) role of the two shame dimensions (withdrawal action tendencies and negative self-evaluation) in the association between dysfunctional parenting and the severity of addiction, testing two structural equation models (SEMs; for substance and behavioral addiction respectively). An online survey recruiting 710 Italian young adults was administered using the Measure of Parental Styles, the Guilt and Shame Proneness Scale, and the brief Screener for Substance and Behavioral Addiction. The SEMs confirmed the predictive role of dysfunctional parenting on the severity of the addiction. Moreover, two dimensions of shame mediated the association in opposite ways. The withdrawal action tendencies positively mediated the association between dysfunctional parenting and the severity of substance and behavioral addiction, potentially acting as a risk factor. Negative self-evaluation negatively mediated the association between dysfunctional parenting and the severity of substance addiction, playing a potential protective role. In a therapeutic context, the findings emphasized the importance of evaluating the different dimensions of shame experiences among addicted individuals and assessing the strategies used to withdraw from these experiences.
Food security under water scarcity: a comparative analysis of Egypt and Jordan
Authors: Christoforidou Maria , Borghuis Gerlo , Seijger Chris , van Halsema Gerardo E. , Hellegers Petra 
Published: September 2022

AbstractAlthough there seems enough water available for our global food needs, there are large areas with growing water scarcity. Food security in these water scarce areas cannot be met through self-sufficiency. The only option is to become more dependent on food imports which is increasingly risky due to volatility in production and food prices. Before 2008, declining food prices and increasing global cereal production favoured the food import strategy. The 2008 world food crisis represented a shock to this strategy and renewed attention was paid to the self-sufficiency strategy. The aim of this paper is to compare the food security strategies of Egypt and Jordan, two water-stressed, increasingly populated, oil-poor countries, pre and post 2008, by means of a food-water analytical framework using FAOSTAT data. Findings show that Egypt and Jordan have many similarities in their food security situation as both are highly dependent on food imports (Egypt 50%, Jordan 95%), and both have a reduced capacity to absorb future price increases. As food imports are inevitable under the water scarce context of Egypt and Jordan, it is important to focus on how to cope with volatilities. Our analysis shows that Jordan has better absorbed the costs of rising food imports than Egypt and that Egypt is trapped by its high domestic cereal production. Having revealed the limited options available to water-scarce countries for food security, we discuss the potential of grain reserves to cope with future price hikes and production shocks.