bluuebunny/crossref_metadata_2025_split huggingface dataset:
A data‐based event‐triggered control for switching topology nonlinear multiagent systems with DoS attacks
Authors: Liu Zeyi , Cao Liang , Liang Hongjing , Tan Lihua 
Published: April 2023

SummaryIn this paper, a secure cooperative control strategy which integrates the data‐driven control method and the backstepping framework is proposed for a class of discrete‐time nonlinear multiagent systems with denial‐of‐service (DoS) attacks. First, by designing special index functions, we overcome the algebraic loop problem in the backstepping framework to propose a data‐driven backstepping control method which does not use the Lyapunov theory to design the controller. Second, the problem of DoS attacks in communication channels is solved by switching topology strategy. Then, an event‐triggered mechanism based on synchronization error is used to save communication resources, which does not have a great negative impact on the control performance. Moreover, an event‐triggered cooperative strategy is constructed to ensure that all signals and tracking errors of the closed‐loop system are bounded. Finally, two simulation examples verify the effectiveness of the proposed control scheme.
FlexBeamOpt: Hybrid solution methodologies for high‐throughput GEO satellite beam laydown and resource allocation
Authors: Gaudry Angus , Li Ryan , Mak‐Hau Vicky 
Published: April 2023

SummaryModern satellite communication systems are required to serve heterogeneous and geographically dispersed user demands with limited resources. In this paper, we investigate methodologies for dynamic resource allocation in Geosynchronous Earth Orbit (GEO) High‐throughput Satellite (HTS) systems. We designed three solution approaches FlexBeamOpt v1, FlexBeamOpt v2, and FlexBeamOpt v3, each as a hybridization of custom heuristics, integer linear programming, and/or constraint programming. We test the performance of the three approaches on 12 test instances that vary in user distribution (realistic, random, and clustered), user numbers (500 vs. 5000 users), and demand distribution (uniform vs. random). We observed that FlexBeamOpt v1 consistently outperformed FlexBeamOpt v2 and FlexBeamOpt v3 in terms of demand coverage and number of users covered for realistic and random user distribution test instances but at the cost of computation time. FlexBeamOpt v3 is the fastest in these instances. For clustered user distribution instances, FlexBeamOpt v3 performed better in terms of demand coverage and number of users covered, at the cost of using more beams. For these test instances, FlexBeamOpt v2 is the fastest in terms of computation time while providing a comparable solution quality.
Self‐Assembled Protein Nanofilm Regulating Uniform Zn Nucleation and Deposition Enabling Long‐Life Zn Anodes
Authors: Zhou Bin , Miao Bianliang , Gao Yue , Yu Aishui , Shao Zhengzhong 
Published: April 2023

AbstractRechargeable zinc‐ion batteries (RZIBs) have gained promising attention as a feasible alternative for large‐scale energy storage by the virtue of their intrinsic security, environmental benignity, low cost, and high volumetric capacity (5849 mAh cm−3). Nevertheless, the deep‐rooted issues of dendrite formation and side reactions in unstable Zn metal anode have impeded RZIBs from being dependably deployed in their proposed applications. Herein, silk fibroin (SF) and lysozyme (ly), as natural biomacromolecules with abundant polar groups arranged in polypeptide backbones, are in situ self‐assembled on the Zn anode surface to construct a homogeneous and compact protein nanofilm. Such protein nanofilm protecting layer presents a negative charge surface and significantly regulates Zn2+ deposition behavior. Meanwhile, synergistic flexible and robust features of protein nanofilm function as artificial solid electrolyte interface (SEI), accommodates the dynamic volume deformation during deposition/dissolution, and blocks corrosion of side reactions. Consequently, the electrochemical stability of protein nanofilm‐modified Zn anode is greatly improved, with an excellent extended lifespan of over 1100 h at a high current density of 10 mA cm−2 and a high cycling capacity of 10 mAh cm−2, corresponding to a high depth of discharge (83% DODZn). Furthermore, the highly reversible Zn electrode remarkably improved the overall performance of MnO2||Zn full‐cells.
Spontaneous Desaturation of the Solvation Sheath for High‐Performance Anti‐Freezing Zinc‐Ion Gel‐Electrolyte
Authors: Li Mengchao , Xi Chenpeng , Wang Xiaofeng , Li Long , Xiao Yuanbin , Chao Yu , Zheng Xinyu , Liu Zheyuan , Yu Yan , Yang Chengkai 
Published: April 2023

AbstractIn recent years, gel‐electrolyte becomes pivotal in preventing hydrogen evolution, reducing dendrite growth, and protecting the zinc metal anode for zinc‐ion batteries. Herein, a polyvinyl alcohol‐based water–organic hybrid gel electrolyte with Agar and dimethyl sulfoxide is designed to construct the spontaneous desaturation of the solvation sheath for reducing hydrogen evolution and dendrite growth at room temperature and even low temperature. According to experimental characterization and theoretical calculations, the well binding between multihydroxy polymer and H2O is achieved in the hybrid desaturated gel‐electrolyte to regulate the inner and outer sheath. The ionic conductivity of hybrid gel‐electrolyte reaches 7.4 mS cm−1 even at −20 °C with only 0.5 m zinc trifluoromethanesulfonate (Zn(OTf)2). The Zn symmetric cells cycle over 1200 h under 26 and −20 °C with improved mechanical properties and electrochemical performance. The asymmetric Zn || Cu cell with hybrid gel electrolyte reaches ≈99.02% efficiency after 250 cycles. The capacity of full cell is maintained at around 74 mAh g−1 with almost unchanged retention rate from 50 to 300 cycles at −20 °C. This work provides an effective strategy for desaturated solvation to reach anti‐freezing and high‐density Zn energy storage devices.
Chitosan‐Linked Dual‐Sulfonate COF Nanosheet Proton Exchange Membrane with High Robustness and Conductivity
Authors: Li Ping , He Bo , Li Xuan , Lin Yunfei , Tang Shaokun 
Published: April 2023

Abstract2D materials that can provide long‐range ordered channels in thin‐film form are highly desirable for proton exchange membranes (PEMs). Covalent organic framework nanosheets (CONs) are promising 2D materials possessing intrinsic porosity and high processability. However, the potential of CONs in PEMs is limited by loose sheet stacking and interfacial grain boundary, which lead to unsatisfied mechanical property and discontinuous conduction pathway. Herein, chitosan (CS), a natural polymer with rich NH2 groups, is designed as the linker of dual‐sulfonate CONs (CON‐2(SO3H)) to obtain CON‐2(SO3H)‐based membrane. Ultrathin CON‐2(SO3H) with high crystallinity and large lateral size is synthesized at water–octanoic acid interface. The high flexibility of CS chains and their electrostatic interactions with SO3H groups of CON‐2(SO3H) enable effective connection of CON‐2(SO3H), thus endowing membrane dense structure and exceptional stability. The stacked CON‐2(SO3H) constructs regular hydrophilic nanochannels containing high‐density SO3H groups, and the electrostatic interactions between CON‐2(SO3H) and CS form interfacial acid–base pairs transfer channels. Consequently, CON‐2(SO3H)@CS membrane simultaneously achieves superior proton conductivity of 353 mS cm−1 (under 80 °C hydrated condition) and tensile strength of 95 MPa. This work highlights the advantages of proton‐conducting porous CON‐2(SO3H) in advanced PEMs and paves a way in fabricating robust CON‐based membranes for various applications.
Renal pathology in wild European rabbits
Authors: Lamalle Alice , Haverson Victoria A. , Hughes Katherine 
Published: April 2023

AbstractBackgroundThere is a relative paucity of data examining the prevalence of renal pathology in wild rabbits.MethodsSixty‐two wild rabbits that had been shot for population control in Cambridgeshire, UK, underwent postmortem examination, including macroscopic and microscopic renal assessment.ResultsThe majority (82%) of the animals had macroscopically and microscopically normal kidneys. One animal (1.6%) had severe perirenal abscessation. Pasteurella spp. was isolated from this lesion. Ten rabbits (16%) had microscopic renal pathology comprising minimal to mild renal inflammation or fibrosis. No Encephalitozoon cuniculi organisms were detected histologically.LimitationsThe sample population was composed of shot rabbits, so the probability of detecting moribund individuals was reduced. Extrapolation of these data to the wider UK wild rabbit population may be limited as rabbits were shot at two sites within a 3 km radius of each other.ConclusionRenal pathology is rare in the population examined.
Diversity of dung beetle‐associated yeasts from pristine environments of Botswana
Authors: Nwaefuna Anita E. , Boekhout Teun , Garcia‐Aloy Mar , Vrhovsek Urska , Zhou Nerve 
Published: April 2023

AbstractYeast–insect interactions are increasingly becoming an attractive source of discovery for previously unknown, unique, diverse, and industrially relevant yeast species. Despite a wealth of studies that have recently focused on yeasts in symbiotic association with Hymenopteran insects, yeasts associated with Coleopteran insects, such as lignocellulosic‐rich dung‐dependent beetles, remain poorly studied. Trends in yeast discovery suggest that species richness and diversity can be attributed to the ecological niche of the insect. Here, we considered the potential of dung beetles inhabiting the extreme environments of Botswana, characterized by desert‐like conditions (semi‐arid to arid and hot) as well as protected pristine environments, as possible attribute niches that can shape the extremophilic and diverse life history strategies of yeasts. We obtained a total of 97 phylogenetically diverse yeast isolates from six species of dung beetles from Botswana's unexplored environments, representing 19 species belonging to 11 genera. The findings suggest that the guts of dung beetles are a rich niche for non‐Saccharomyces yeast species. Meyerozyma and Pichia were the most dominant genera associated with dung beetles, representing 55% (53 out of 97) of the yeast isolates in our study. Trichosporon and Cutaneotrichosporon genera represented 32% (31 out of 97) of the isolates. The remaining isolates belonged to Apiotrichum, Candida, Diutina, Naganishia, Rhodotorula, and Wickerhamiella genera (12 out of 97). We found out that about 62% (60 out of 97) of the isolates were potentially new species because of their low internal transcribed spacer (ITS) sequence similarity when compared to the most recent optimal species delineation threshold. A single isolate was unidentifiable using the ITS sequences. Using an in silico polymerase chain reaction‐restriction fragment length polymorphism approach, we revealed that there was genetic diversity within isolates of the same species. Our results contribute to the knowledge and understanding of the diversity of dung beetle‐associated yeasts.
Netherlands: Teachers’ Perspectives and Practices in Chinese and Polish Language and Culture Teaching
Authors: Kroon Sjaak , Li Jinling , Dreef Agnieszka 
Published: April 2023

AbstractThe Netherlands has a long history of immigration. One of the oldest groups are the Chinese and one of the most recent ones are migrants from Poland. Both groups have created clear infrastructures for functioning in the Netherlands. One element thereof are complementary schools, i.e., community run schools that teach Chinese/Polish language and culture to Chinese/Polish students with a migration background, mainly on Saturdays. The teachers in these schools are generally community members who are not necessarily qualified as language or culture teachers. An ethnographic approach to these teachers’ classroom practices and perspectives shows that their professional practical knowledge as reflected in the operational and perceived curriculum domain are oriented more toward highlighting and promoting their home country’s national history, identity, ideology and values than to preparing their students for living in the superdiverse society of the Netherlands in which Dutch language and culture, also for many Chinese-Dutch and Polish-Dutch students are dominant.
White College Students’ Cognitive Dissonance When Taught by Immigrant Professor of Color
Authors: Zaier Amani , Maina Faith 
Published: April 2023

AbstractThis study investigated whether White college students experience cognitive dissonance when taught by immigrant professors of color and if so, how do they restore harmony and balance in order to complete the course successfully. Cognitive dissonance refers to feelings of discomfort that arise when a person’s behavior or attitude is in conflict with the person’s values and beliefs, or when new information contrary to their beliefs is presented to them. The participants in this study were 321 preservice teachers who were enrolled in a culturally and linguistically diversity course and a bilingual education course at a large, predominantly White university in the southwestern United States Using three archival instruments including anonymous questions, a guessing activity, a mid-term and end-of-semester evaluations, the students manifested dissonance by “othering” the professor through cultural and racial profiling, questioned the professor’s qualification, professionalism and credentials, and expressed anger and anxiety towards the course. These processes have significant implications for the career trajectory of the immigrant professor of color, while at the same time impacting the knowledge access for White college students.
“Why Are We Only Learning About White People?” The Role of Identity in the Curricular and Pedagogical Considerations of One Latino Educator
Authors: Allen Kelly R. 
Published: April 2023

AbstractThis chapter focuses on the perspectives of Ricardo, a Latino educator, and his experience with navigating identity as he made curricular and pedagogical considerations in his practice. The chapter begins by reviewing the literature on the experiences of minoritized educators in education, asking: How do minoritized educators navigate the complexity of their identity as a minoritized individualandeducator working within predominantly white concepts of knowledge and behavior construction? This chapter analyzes a collection of focus groups, individual interviews, and curriculum artifacts as a means of approaching and analyzing Ricardo’s experiences. This analysis illuminates, (1) how language and hybrid classroom discourse was used to connect with students, and (2) the deep responsibility Ricardo felt to create bridges to the curriculum for his students. The findings of this chapter underscore the need for teacher education programs to better support minoritized educators in navigating the complex positions they assume, as educators and as minoritized individuals, and the ways that these two identities intersect in their practice.
Finland and Sweden: Muslim Teachers as Cultural Brokers
Authors: Rissanen Inkeri 
Published: April 2023

AbstractThis chapter focuses on the experiences and perspectives of Muslim teachers, who serve informally as “cultural brokers” in Finnish and Swedish schools. It begins by reviewing research on minority teachers and their roles as cultural mediators, as well as on Muslims in European public education. After that, the contexts, methodology and results of a case study are presented. The data includes semi-structured interviews with 14 “cultural broker” teachers. The results present the tasks of cultural brokering, as well as teachers’ perceptions of what makes a good cultural broker and how this role should be developed. The chapter includes a critical discussion on what is expected of minority teachers; they are not a homogenous group and their willingness to take on the tasks of cultural brokering depend on the nature of their jobs. The simplistic view of cultural broker teachers as role models for minority students is scrutinized, likewise the ways of outsourcing “all things multicultural” in the school to them.
New Zealand: The Experiences of Māori Teachers as an Ethnic Minority in English-Medium Schools
Authors: Turner-Adams Hana , Rubie-Davies Christine 
Published: April 2023

AbstractThis chapter discusses the experiences of Māori teachers who are currently or were previously employed in English-medium schools and early childhood centers in New Zealand. The New Zealand education system has a long history of failing to meet the educational needs of Māori students, and the demand for teachers to improve students’ academic outcomes has increased. Māori teachers connect and engage more readily with Māori students due to their shared culture and background. In contrast, many Pākehā/New Zealand European teachers have a limited understanding of Māori language, knowledge systems, values, and customs, and often hold low expectations for Māori student achievement. Findings from our study revealed that Māori teachers carried a substantial cultural and pastoral workload. On average, teachers reported spending at least 5½ hours per week working with Māori students and their whānau (family) in addition to their full-time teaching responsibilities. Although most teachers were acknowledged for their contributions through additional remuneration or time-release, others received no recognition. Participants were committed to their students but often worked in unwelcoming and unsupportive Eurocentric environments. Teachers were also disheartened by the general lack of commitment of their non-Māori colleagues to Māori language, culture, and values, yet were expected to guide, support, and educate these colleagues on how to meet their obligations to Māori students. The chapter concludes with suggestions for how school principals, center managers, and other teachers, could better support Māori teachers so that they continue making valuable contributions to their students’ education and remain employed in the teaching profession.
Research on Minority Teachers in Germany: Developments, Focal Points and Current Trends from the Perspective of Intercultural Education
Authors: Rosen Lisa , Lengyel Drorit 
Published: April 2023

AbstractThis chapter presents a meta-analysis of studies on ethnic minority (prospective) teachers in Germany and German-speaking countries. Starting with “pioneer studies”, current research trends and research foci from the perspective of intercultural education are elaborated: intersectional perspectives on the professional self-concepts of minority teachers, discrimination and anti-Muslim racism experienced by prospective minority teachers, language and multilingualism as a relevant social category of difference and inequality in the context of (prospective) minority teachers and comparisons between (prospective) minority and majority teachers with a focus on the effects of representation of (prospective) minority teachers. Finally, it is argued that in Germany an inclusive perspective on minority teachers, embracing recently immigrated and refugee teachers, is needed to overcome the ethnicised attributions of professional competence and to focus on the discriminatory structures of the German education system, including teacher education.
Teachers with Migration Background in German Discourse: Insights into Research on Education, Professional Integration and Self-Perception
Authors: Goltsev Evghenia , Putjata Galina , Knaus Anastasia 
Published: April 2023

AbstractThis chapter presents the state of the art focusing on the so-called teachers with “migration background” in Germany. Applying the method of the literature review, we summarize current and emerging research trends as well as understudied areas in Germany. The chapter provides the reader with a critical survey of the extensive literature produced in the past decade and a synthesis of current thinking on the topic at hand across disciplines and methodological approaches. The chapter opens up with a concise presentation of the context, objectives and the methodology of the study. These are followed by a critical synopsis of the findings and a closing conclusion. The results of the analysis reveal that a vast amount of research is focusing on the three following domains: Ascriptions and (Self-)perception of minority teachers’ role in education such as the responsibility of fostering the linguistic diversity) Minority teachers’ role for students and students’ own perspectives, e.g. the importance of the multilingual teachers for self-positioning of the students as migration-related multilinguals; as well as professional integration of minority teachers including access to the labour market and teacher education revealing an underrepresentation of minority teachers in schools. In the conclusion we point out new perspectives and areas in need of further research, such as the demand for new approaches on how to constructively include migration-related multilingualism in the course of teacher education.
Integration of Digitization and Sustainability Objectives in a Maturity Model-Based Strategy Development Process
Authors: Münnich Marc , Stange Maximilian , Süße Marian , Ihlenfeldt Steffen 
Published: April 2023

AbstractPolitical, technological and economic changes force manufacturing companies to shift their strategic alignment towards green and digitized technologies. The parallel advances in those technologies raise questions regarding economic, environmental and social sustainability issues that are challenging to integrate into corporate strategy. Recently, sustainable energy supply has gained additional attention as a critical resource for production. Digital transformation is a diverse intracompany process and requires adequate strategies. Maturity models are a well-known and established approach to define strategic improvement measures. Various versions of separate maturity models to either examine the current state of digitization or sustainability have been developed and there are few models to support both dimensions adequately. Therefore, the authors propose a strategy development process, which utilizes a combined maturity model for both domains in one framework. A review on sustainability-related maturity models as well as the connection to digitization aspects is conducted. Based on this, an existing model is extended. The model is tested in a case study to compare the impact of the models’ adaptions.
Taxonomy for Biological Transformation Principles in the Manufacturing Industry
Authors: Berkhahn Magda , Kremer Gerald , Riedelsheimer Theresa , Lindow Kai , Stark Rainer 
Published: April 2023

AbstractIndustry and research are seeking answers to current demands in industrial value creation, like resilience of production, sufficient product quality and sustainability of products and processes. A novel line of thought, seeking the accomplishment of those is the Biological Transformation (BT). BT describes the interweaving of biological modes of action, materials and organisms with engineering and information sciences. The conflation of disciplines from natural, technical and social sciences yields in a heterogeneous field of activities with ambiguous technical terms. An ascertainment of principles of BT is required to classify yet undifferentiated patterns in nature-based production, facilitating their systematic implementation in aiming for sustained solutions on current challenges. With increasing research in biomimetic, attempts arise to capture nature‑based activities in manufacturing through schematic classifications. Yet, basic semantics representing the effective principles of BT in the manufacturing industry is lacking.The goal of this publication is to introduce a taxonomy of Biological Transformation in manufacturing based on its core principles Bio Inspiration, Bio Integration and Bio Interaction. Within the research project BioFusion 4.0, the taxonomy was developed and applied to classify technology innovations. The paper presents the taxonomy, its development and application in use cases.