bluuebunny/crossref_metadata_2025_split huggingface dataset:
From speck to story: relating history of mathematics to the cognitive demand level of tasks
Authors: Agterberg D. A. , Oostdam R. J. , Janssen F. J. J. M. 
Published: September 2021

AbstractIt is a challenge for mathematics teachers to provide activities for their students at a high level of cognitive demand. In this article, we explore the possibilities that history of mathematics has to offer to meet this challenge. History of mathematics can be applied in mathematics education in different ways. We offer a framework for describing the appearances of history of mathematics in curriculum materials. This framework consists of four formats that are entitled speck, stamp, snippet, and story. Characteristic properties are named for each format, in terms of size, content, location, and function. The formats are related to four ascending levels of cognitive demand. We describe how these formats, together with design principles that are also derived from the history of mathematics, can be used to raise the cognitive level of existing tasks and design new tasks. The combination of formats, cognitive demand levels, and design principles is called the 4S-model. Finally, we advocate that this 4S-model can play a role in mathematics teacher training to enable prospective teachers to reach higher cognitive levels in their mathematics classrooms.
What are the barriers to agricultural biomass market development? The case of Poland
Authors: Roszkowska Sylwia , Szubska-Włodarczyk Natalia 
Published: September 2021

AbstractThis paper examines the main determinants of biomass market development from a regional perspective in the context of current EU climate and energy policy. The EU’s targeting of climate neutrality implies a new, multifaceted role for agriculture as a producer of energy resources. The challenge is to orient production to support the sustainable development of the circular economy. The possibility of using agricultural waste as a type of energy raw material aligns with a holistic approach to product management. The use of agricultural biomass as an energy raw material can enable increased energy self-sufficiency and reduced dependence on imported fuels among Poland’s regions and an increase in the country’s energy security. The aim of the study is to identify barriers to and opportunities for the development of the agricultural biomass market. The empirical section presents survey data from interviews with farm owners in the Polish province with the highest agricultural biomass potential, located in a region with one of the largest opencast mines in Europe. The estimated parameters of a logit model indicate that the logistical aspects of raw material collection and organization and a lack of knowledge of biomass are the main barriers to biomass development on the supply side.
Mixed methods research in service-learning: an integrative systematic review
Authors: Camilli Trujillo Celia , Cuervo Calvo Laura , García Gil Desirée , Bonastre Valles Carolina 
Published: September 2021

AbstractIn view of the challenges involved in designing a study of Mixed Methods (MM), as well as the problematics inherent in studying Service-Learning (S-L) from new research perspectives, and considering the lack of systematic reviews of MM in S-L, this study proposes to analyse the use of MM research to evaluate S-L through a systematic integrative review of scientific papers published in international databases (ERIC, DIALNET, SCOPUS, and Web of Science) using the terms ‘mixed methods research’ and ‘service-learning’. The contextual and methodological variables were analysed descriptively and inferentially using Excel and Stata programs. Moreover, 149 predefined codes were created and analysed using the qualitative program Atlas.ti to identify which terms associated with the research methodology were used most frequently in relation to the MM for S-L methodology, and how and why they were used. Of the 192 papers found, only 93 met the inclusion criteria. The results show that very few investigations specify the MM they used in sufficient detail. Only 28% provide information to estimate the effect size, suggest interventions based on S-L, and collect measures for post-intervention evaluation. This demonstrates that the relationship between MM and stages of the S-L are not complemented in the methodological design. The results demonstrated that researchers should continue working with MM in S-L for the integration of qualitative and quantitative results. This research can be a methodological guide for professionals and academics who want to investigate MM in S-L because it identifies methodological deficiencies and strengths and offers and alternative designs to evaluate the service.
Regularity and Stability for a Convex Feasibility Problem
Authors: De Bernardi Carlo Alberto , Miglierina Enrico 
Published: September 2021

AbstractLet us consider two sequences of closed convex sets {An} and {Bn} converging with respect to the Attouch-Wets convergence toAandB, respectively. Given a starting pointa0, we consider the sequences of points obtained by projecting onto the “perturbed” sets, i.e., the sequences {an} and {bn} defined inductively by$b_{n}=P_{B_{n}}(a_{n-1})$bn=PBn(an−1)and$a_{n}=P_{A_{n}}(b_{n})$an=PAn(bn). Suppose thatA∩Bis bounded, we prove that if the couple (A,B) is (boundedly) regular then the couple (A,B) isd-stable, i.e., for each {an} and {bn} as above we have dist(an,A∩B) → 0 and dist(bn,A∩B) → 0. Similar results are obtained also in the caseA∩B=∅, considering the set of best approximation pairs instead ofA∩B.
Removal and fate of pesticides in a farm constructed wetland for agricultural drainage water treatment under Mediterranean conditions (Italy)
Authors: Braschi Ilaria , Blasioli Sonia , Lavrnić Stevo , Buscaroli Enrico , Di Prodi Katia , Solimando Domenico , Toscano Attilio 
Published: September 2021

AbstractA non-waterproofed surface flow constructed wetland (SFCW), treating agricultural drainage water in Northern Italy, was investigated to gain information on the potential ability for effective pesticide abatement. A mixture of insecticide imidacloprid, fungicide dimethomorph, and herbicide glyphosate was applied, by simulating a single rain event, into 470-m-long water course of the SFCW meanders. The pesticides were monitored in the wetland water and soil for about 2 months after treatment. Even though the distribution of pesticides in the wetland was not uniform, for each of them, a mean dissipation of 50% of the applied amount was already observed at ≤7 days. The dissipation trend in the water phase of the wetland fitted (r2 ≥ 0.8166) the first-order model with calculated DT50 of 20.6, 12.0, 5.8, and 36.7 days for imidacloprid, dimethomorph, glyphosate, and the glyphosate metabolite AMPA, respectively. The pesticide behavior was interpreted based on the chemical and physical characteristics of both the substances and the water-soil system. Despite the fast abatement of glyphosate, traces were detected in the water until the end of the trial. The formation of soluble 1:1 complex between glyphosate and calcium, the most representative cation in the wetland water, was highlighted by infrared analyses. Such a soluble complex was supposed to keep traces of the herbicide in solution.
Foreign aid and judicial autonomy
Authors: Ariotti Margaret , Dietrich Simone , Wright Joseph 
Published: September 2021

AbstractForeign aid donors increasingly embrace judicial autonomy as an important component of advancing democracy and promoting investment abroad. Recipient governments also recognize the importance of judicial reform for improving the investment climate at home. However, developing countries often lack the necessary state capacity that would enable them to implement these reforms. We argue that recipient countries that lack the state capacity to undertake reforms on their own turn to donors, who readily assist in judicial reforms via targeted democracy and governance interventions. At the same time, we suggest that the external assistance matters less for recipients that are able to implement judicial reforms by themselves. We employ an instrumental variable model to test this argument in a global sample of aid-eligible countries.
Pseudoparalysis and pseudoparesis of the shoulder
Authors: Camenzind Roland Stefan , Lafosse Laurent , Lafosse Thibault 
Published: September 2021

Abstract
Background
Clinical presentation of massive rotator cuff tears range from pain to loss of active range of motion. Pseudoparalysis and pseudoparesis are defined inconsistently in the literature, but both include limited active with maintained passive range of motion.

Objective
This article aims to provide a consistent definition of pseudoparalysis and pseudoparesis of the shoulder and show structural and biomechanical differences between these two types of rotator cuff tear with their implications for treatment.

Methods
A literature review including key and basic papers discussing clinical symptoms, biomechanical differences, and their impact on therapeutic options for pseudoparalysis and pseudoparesis was performed.

Results
Biomechanically, structural differences between pseudoparalysis (active scapular plane abduction <45°) and pseudoparesis (active scapular plane abduction 45–90°) exist. For massive posterosuperior rotator cuff tears, the integrity of the inferior subscapularis tendon is the most predictive factor for active humeral elevation. Patients with pseudoparalysis have a higher grade of subscapularis tendon involvement (>50%) and fatty infiltration of the subscapularis muscle. Treatment options depend on the acuteness and repairability of the tear. Rotator cuff repair can reliably reverse the active loss of active range of motion in acute and reparable rotator cuff tears. In chronic and irreparable cases reverse total shoulder arthroplasty is the most reliable treatment option in elderly patients.

Conclusion
The most concise definition of pseudoparalysis is a massive rotator cuff tear that leads to limited active (<45° shoulder elevation) with free passive range of motion in the absence of neurologic deficits as the reason for loss of active elevation. The integrity of the subscapularis tendon is the most important difference between a pseudoparalytic and pseudoparetic (active shoulder elevation 45–90°) shoulder. Decision-making for surgical options depends more on reparability of the tendon tear and patient age than on differentiation between pseudoparalysis and pseudoparesis.
An attempt to evaluate STEAM project-based instruction from a school mathematics perspective
Authors: Diego-Mantecon Jose-Manuel , Prodromou Theodosia , Lavicza Zsolt , Blanco Teresa F. , Ortiz-Laso Zaira 
Published: September 2021

AbstractOfficial documents in several educational systems reflect the importance of integrating Science, Technology, Engineering, Arts, and Mathematics (STEAM) and consider project-based learning (PBL) as a way of integrating such disciplines in the classroom. Although STEAM-PBL has been characterized and evaluated in different ways, its impact on school mathematics teaching remains unclear. Mathematics is recognized as the fundamental basis of other disciplines; however, many students still perceive it as a difficult subject and abandon it. To analyze STEAM-PBL classroom implementation from a school mathematics standpoint, we examined 41 classroom experiences from 11 Spanish secondary education teachers (five in-field mathematics teachers), who participated in a STEAM training program for more than 4 years. To frame this study, Thibaut et al.’s (J STEM Educ 3(1):02, 2018) and Schoenfeld’s (Educ Res 43(8):404–412, 2014) characterizations of well-designed and implemented projects, respectively, were employed. The results showed that in-field mathematics teachers avoided transdisciplinary projects in which school mathematics is difficult to address, while out-of-field teachers tended to overlook the mathematics in interdisciplinary projects. Unlike out-of-field teachers, mathematics teachers often eluded design-based learning processes for deeply exploiting school mathematics. The latter teachers promoted high cognitive demands and positive perceptions about mathematics in projects where formative environments were generated through discussion and a meaningful feedback loop.
Creativity in problem solving: integrating two different views of insight
Authors: Haavold Per Øystein , Sriraman Bharath 
Published: September 2021

AbstractEven after many decades of productive research, problem solving instruction is still considered ineffective. In this study we address some limitations of extant problem solving models related to the phenomenon of insight during problem solving. Currently, there are two main views on the source of insight during problem solving. Proponents of the first view argue that insight is the consequence of analytic thinking and a sequence of conscious and stepwise steps. The second view suggests that insight is the result of unconscious processes that come about only after an impasse has occurred. Extant models of problem solving within mathematics education tend to highlight the first view of insight, while Gestalt inspired creativity research tends to emphasize the second view of insight. In this study, we explore how the two views of insight—and the corresponding set of models—can describe and explain different aspects of the problem solving process. Our aim is to integrate the two different views on insight, and demonstrate how they complement each other, each highlighting different, but important, aspects of the problem solving process. We pursue this aim by studying how expert and novice mathematics students worked on two ill-defined mathematical problems. We apply both a problem solving model and a creativity model in analyzing students’ work on the two problems, in order to compare and contrast aspects of insight during the students’ work. The results of this study indicate that sudden and unconscious insight seems to be crucial to the problem solving process, and the occurrence of such insight cannot be fully explained by problem solving models and analytic views of insight. We therefore propose that extant problem solving models should adopt aspects of the Gestalt inspired views of insight.
Ecosystem approach to harvesting in the Arctic: Walking the tightrope between exploitation and conservation in the Barents Sea
Authors: Heath Michael R. , Benkort Déborah , Brierley Andrew S. , Daewel Ute , Laverick Jack H. , Proud Roland , Speirs Douglas C. 
Published: September 2021

AbstractProjecting the consequences of warming and sea-ice loss for Arctic marine food web and fisheries is challenging due to the intricate relationships between biology and ice. We used StrathE2EPolar, an end-to-end (microbes-to-megafauna) food web model incorporating ice-dependencies to simulate climate-fisheries interactions in the Barents Sea. The model was driven by output from the NEMO-MEDUSA earth system model, assuming RCP 8.5 atmospheric forcing. The Barents Sea was projected to be > 95% ice-free all year-round by the 2040s compared to > 50% in the 2010s, and approximately 2 °C warmer. Fisheries management reference points (FMSYandBMSY) for demersal fish (cod, haddock) were projected to increase by around 6%, indicating higher productivity. However, planktivorous fish (capelin, herring) reference points were projected to decrease by 15%, and upper trophic levels (birds, mammals) were strongly sensitive to planktivorous fish harvesting. The results indicate difficult trade-offs ahead, between harvesting and conservation of ecosystem structure and function.
Surgical treatment of female stress incontinence: impact of changed views on polypropylene
Authors: Heesakkers John P. F. A. , Roovers J.-P. , Schraffordt Koops Steven E. 
Published: September 2021

AbstractThe introduction of the tensionfree vaginal tape in 1995 drastically changed the landscape of surgical procedures for stress urinary incontinence (SUI). Because of the uncomplicated technique many urologists and gynecologists embraced the procedure with tripled the number of annual procedures in the beginning of this century. At the same time polypropylene was used for the development of surgical procedures of pelvic organ prolapse (POP). Especially the use of polypropylene for POP has caused many severe clinical complications. This caused a huge reduction of these kind of surgical procedures and it is performed nowadays only under strict conditions. At the same time the use of polypropylene for SUI was scrutinized and questioned. Nowadays, in the Ango-Saxon countries the use of polypropylene tapes for SUI is not recommended. This manuscript explores the role of polypropylene tapes for SUI. Questions that are dealt with are: How dangerous are polypropylene tapes anyway? What are the alternatives? Which factors contribute to a successful outcome of stress incontinence surgery?
Improved wave dispersion properties in 1D and 2D bond-based peridynamic media
Authors: Alebrahim R. , Packo P. , Zaccariotto M. , Galvanetto U. 
Published: September 2021

AbstractIn this study, a novel method for improving the simulation of wave propagation in Peridynamic (PD) media is investigated. Initially, the dispersion properties of the nonlocal Bond-Based Peridynamic model are computed for 1-D and 2-D uniform grids. The optimization problem, developed through inverse analysis, is set up by comparing exact and numerical dispersion and minimizing the error. Various weighted residual techniques, i.e., point collocation, sub-domain collocation, least square approximation and the Galerkin method, are adopted and the modification of the wave dispersion is then proposed. It is found that the proposed methods are able to significantly improve the description of wave dispersion phenomena in both 1-D and 2-D PD models.
Design and evaluation of an engine-in-the-loop environment for developing plug-in hybrid electric vehicle operating strategies at conventional test benches
Authors: Dietrich Maximilian , Ling Kunxiong , Schmid Roland , Song Zhao , Beidl Christian 
Published: September 2021

AbstractDue to a large number of degrees of freedom and connected powertrain functionalities, the development of operating strategies for plug-in hybrid electric vehicles is an especially complex task. Besides optimizations of drivability, noise, vibrations and harshness as well as energy efficiency, the main challenge lies in ensuring emissions conformity. For this purpose, test vehicles are typically applied to achieve a realistic test and validation environment. However, operating strategy calibration using test vehicles has the drawbacks, that (i) it is very time consuming and cost intensive, (ii) it can only be conducted in late development phases and (iii) cannot be applied to reproducing driving loads for a valid comparison. To overcome these issues, this paper presents a consistent engine-in-the-loop approach combining real engine hardware and multiple software elements to represent PHEV behavior at the engine test bench. Thereby, an environment is created, which allows for realistic, flexible, cost efficient and reproducible testing. The effectiveness of the presented framework is evaluated by comparing relevant on-road measurements with their reproduction at the engine test bench. The results show that the vehicle on-road behavior can be replicated using the described testing environment. Particularly engine start/stop behavior and load levels—the core functionalities for operating strategy calibration—are matched. The proven level of realism in powertrain behavior enables further use cases beyond on-road measurement reproduction, i.e. varying individual component properties and observing real-world consequences at the test bench without the need for vehicle tests.
A spatial analysis of parliamentary elections in Sweden 1985–2018
Authors: Michaud Jérôme , Mäkinen Ilkka H. , Szilva Attila , Frisk Emil 
Published: September 2021

AbstractUnderstanding where and why political change is happening in a country is a fundamental issue in political geography. While electoral choice is individual, it is influenced by various sociological, cultural, and geographical factors postulated to create ‘cultural fields’ influencing individual decision-making. Here, we test the cultural field hypothesis on Sweden, an important democracy of Europe long regarded as an example by other European countries, by studying the middle-long-term evolution of the spatial structure of political choice over the last three decades. In testing the cultural field hypothesis, an analysis of spatial correlations is combined with groupings of Swedish municipalities into larger communities reflecting the similarity of their voting profiles. We show that spatial correlations decay logarithmically, which is a sign of long-ranged interactions, and also demonstrate that Sweden can be divided into three or four large and stable politico-cultural communities. More precisely, a transition from three to four main politico-cultural communities is observed. The fourth community, which emerged in the early 2000s is of particular interest as it is characterized by a large vote-share for the Sweden Democrats, while almost all other parties underperform. Moreover, the Swedish electoral landscape seems to be increasingly fragmenting even when the voting profiles of the municipalities over the country are slowly converging.
Frömmigkeit, Fashion und Business: Positionen ethisch/ästhetischer Weiblichkeit in muslimischen Lifestyle-Vlogs
Authors: Malli Gabriel 
Published: September 2021

ZusammenfassungDer Artikel präsentiert empirische Befunde zur Konstruktion muslimischer Weiblichkeits-Modelle in deutschsprachigen Lifestyle-Vlogs auf YouTube, in denen gläubige muslimische Frauen als Influencerinnen auftreten und ihre Alltagsroutinen und -praktiken in zumeist idealisierter Weise und unter Bezugnahme auf religiöses Wissen inszenieren. Ausgehend von poststrukturalistischen Theorieansätzen möchte ich diese Modelle als Subjektpositionen eines Diskurses muslimischer Weiblichkeit begreifen, der bestimmte Modi des Selbstverstehens und der Selbstführung sowie damit verknüpfte Affizierungsweisen nahelegt. Im Anschluss an eine kurze Diskussion islamischer und säkularer Weiblichkeitsdiskurse, in deren Schnittpunkt mein Material zu verorten ist, zeige ich anhand zweier deutschsprachiger Lifestyle-Kanäle, deren Videos ich mithilfe diskursanalytischer Verfahren untersucht habe, wie Produzentinnen ein hybrides Modell muslimischer Subjektivität hervorbringen, das bestimmte Entwürfe eines gelingenden muslimischen Lebens im westlichen Kontext enthält. Sie versuchen, alltägliche Widersprüche zwischen westlich markierter Konsum- und Populärkultur einerseits und muslimischer Religiosität andererseits auf positiv affizierende Weise aufzulösen, wobei eine Subjektposition ethisch/ästhetischer muslimischer Weiblichkeit entsteht, in der sich Ideale modischer Expressivität mit religiösen Selbstkonzeptionen und (neo-)liberalen Diskursen von Autonomie und Selbst-Unternehmertum verschränken.