Hange Yun, Qiaoping Zhang, Wei Cao and Xiaolei Zhang
Teacher noticing is a critical aspect of teaching competence that has garnered significant scholarly attention. This systematic review aims to comprehensively analyze the…
Abstract
Purpose
Teacher noticing is a critical aspect of teaching competence that has garnered significant scholarly attention. This systematic review aims to comprehensively analyze the integration of teacher noticing into lesson study, exploring how different stages of lesson study influence the development of teacher noticing.
Design/methodology/approach
This article systematically reviews 15 empirical studies on teacher noticing within the context of lesson study, focusing on research design, subjects, methods, theoretical frameworks and the specific impact of different stages of lesson study on teacher noticing.
Findings
The review reveals a geographical concentration of studies in Western countries, particularly in the United States, with a relative scarcity of research in East Asian contexts. Most studies focus on pre-service teachers, employ qualitative methods and are grounded in Van Es’s (2011) Learning to Notice framework. The findings indicate that different stages of lesson study significantly influence teacher noticing, particularly in the planning, teaching and reflection stages, where shifts in focus and depth of noticing are evident.
Research limitations/implications
This paper explores how various lesson study stages impact teacher noticing development. It offers future research directions and calls for more cross-cultural studies. Certain activities within classroom research may restrict attention development, particularly when these activities fail to encourage in-depth cognitive analysis across all stages sufficiently. Future research should explore how to avoid these limitations in the classroom research process and design more effective strategies to support deep observation and analysis by teachers at each stage. In the reflection stage of classroom research, certain factors may restrict the focus on student thinking.
Practical implications
By synthesizing the existing research into a comprehensive narrative, we provide an essential foundation for future studies on teacher noticing within lesson study contexts. This work not only charts the historical development of the field but also encourages more profound and actionable research engagement with the nuanced processes of teacher observation and reflection during lesson studies.
Originality/value
This paper explores how various lesson study stages impact teacher noticing development. It offers future research directions and calls for more cross-cultural studies and a combination of quantitative and qualitative methods to fully understand the effects of lesson studies on teacher noticing.
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Abstract
Purpose
The purposes of this paper are to solve the low-efficiency problem caused by large search space in global localization and develop an efficient global localization method requiring only one 2D-LiDAR scan to match against the prior map for indoor mobile robots.
Design/methodology/approach
This paper solves the global localization problem using phase correlation as the underlying registration method. To obtain accurate rotation parameter, this paper exhaustively pre-rotates the prior map by a certain angle stride in advance. Then the input scan is matched against the pre-rotated maps one by one using phase correlation to determine translation parameters, and this paper constructs an orientation histogram by the correlation coefficients. The map rotation angle and corresponding translation parameters of the maximal peak value in the orientation histogram constitute the global pose. This paper applies a divide-and-conquer method to reduce the time consumption of single phase correlation and determines promising angle ranges where the maximal peak value may appear based on the periodicity of 90º in the orientation histogram with the signal-to-noise ratio (SNR) to reduce execution times of phase correlation.
Findings
Both simulated and real experimental results reveal that the proposed method achieves a high enough success rate and efficient (processing time in a second) global localization.
Originality/value
The proposed method constructs an orientation histogram to improve the global localization success rate and applies a divide-and-conquer method with SNR to improve efficiency, which will benefit the indoor mobile robots equipped with 2D-LiDAR.
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Hannah Walter, Jacqueline Jane Cameron, Helen Simpson, Kenny Kor, Sarah MacLean and Julaine Allan
This exploratory pilot study investigated the experiences and perceptions of young people who use N2O recreationally. To the best of the authors’ knowledge, this is the first…
Abstract
Purpose
This exploratory pilot study investigated the experiences and perceptions of young people who use N2O recreationally. To the best of the authors’ knowledge, this is the first qualitative research conducted in Australia with young people investigating this topic in detail. The purpose of this pilot study was to explore young people’s perceptions, motives and experiences of N2O use by exploring the positive and negative effects of N2O, motives for use, practices and methods and suggested advice to help define targeted harm reduction messages.
Design/methodology/approach
Participants were recruited via hard copy posters, social media advertisements and snowball sampling. Seven in-depth semi-structured interviews were conducted with young people aged between 18 and 25 years who had used N2O on at least ten occasions. The interview transcripts were analysed thematically. The study was completed in accordance with COREQ for qualitative research.
Findings
The findings identified four overarching themes about N2O use: the nature of N2O use; the appeal of N2O; influences on N2O use; and perception of risk and harms of N2O use.
Originality/value
Young people in the study described their experiences as being largely pleasurable. However, several identified negative impacts, although harms, were primarily disregarded. Exploration of N2O effects alongside other substance use highlighted how N2O is a unique substance and should be considered as such when developing harm reduction strategies.
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Qing Wang, Xuening Wang, Shaojing Sun, Litao Wang, Yan Sun, Xinyan Guo, Na Wang and Bin Chen
This study aims to study the distribution characteristics of antibiotic resistance in direct-eating food and analysis of Citrobacter freundii genome and pathogenicity. Residual…
Abstract
Purpose
This study aims to study the distribution characteristics of antibiotic resistance in direct-eating food and analysis of Citrobacter freundii genome and pathogenicity. Residual antibiotics and antibiotic resistance genes (ARGs) in the environment severely threaten human health and the ecological environment. The diseases caused by foodborne pathogenic bacteria are increasing daily, and the enhancement of antibiotic resistance of pathogenic bacteria poses many difficulties in the treatment of disease.
Design/methodology/approach
In this study, six fresh fruits and vegetable samples were selected for isolation and identification of culturable bacteria and analysis of antibiotic resistance. The whole genome of Citrobacter freundii isolated from cucumber was sequenced and analyzed by Oxford Nanopore sequencing.
Findings
The results show that 270 strains of bacteria were identified in 6 samples. From 12 samples of direct food, 2 kinds of probiotics and 10 kinds of opportunistic pathogens were screened. The proportion of Citrobacter freundii screened from cucumber was significantly higher than that from other samples, and it showed resistance to a variety of antibiotics. Whole genome sequencing showed that Citrobacter freundii was composed of a circular chromosome containing signal peptides, transmembrane proteins and transporters that could induce antibiotic efflux, indicating that Citrobacter freundii had strong adaptability to the environment. The detection of genes encoding carbohydrate active enzymes is more beneficial to the growth and reproduction of Citrobacter freundii in crops. A total of 29 kinds of ARGs were detected in Citrobacter freundii, mainly conferring resistance to fluoroquinolones, aminoglycosides, carbapenem, cephalosporins and macrolides. The main mechanisms are the change in antibiotic targets and efflux pumps, the change in cell permeability and the inactivation of antibiotics and the detection of virulence factors and ARGs, further indicating the serious risk to human health.
Originality/value
The detection of genomic islands and prophages increases the risk of horizontal transfer of virulence factors and ARGs, which spreads the drug resistance of bacteria and pathogenic bacteria more widely.
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In this chapter, the author compares two representations of the child from two famous films by the Fifth Generation’s top director in China, Chen Kaige, Yellow Earth (1984) and…
Abstract
In this chapter, the author compares two representations of the child from two famous films by the Fifth Generation’s top director in China, Chen Kaige, Yellow Earth (1984) and Together (2002). The girl’s story in the former and the boy’s story in the latter show respectively the dissolution of the Party/state as an extended family home, and it being replaced by the atomized, fluid, and flexible family home in the new state-led neo-liberal order. Compared with the girl, the boy in the new century tries to convey an equally lyrical articulation of the family/home, but differently, with a strong sense of his subjectivity. Thus, the boy’s voice in Together, self-reflective, artistically innovative, and affective, becomes a voice of resistance against authoritarian neoliberalism in post-socialist China.
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Mengsha Bai, Junning Li, Long Zhao and Yuan Wang
The purpose of this study is to reveal the significant contribution of MXene on enhancing tribological properties and to obtain the influence mechanism of various factors on…
Abstract
Purpose
The purpose of this study is to reveal the significant contribution of MXene on enhancing tribological properties and to obtain the influence mechanism of various factors on friction characteristics of rolling bearing under extreme conditions.
Design/methodology/approach
Under extreme working conditions, the friction characteristics of rolling bearings directly determine the safety and reliability of the transmission system. In this study, MXene is added to the origin lubricating grease (OLG) of rolling bearing to enhance their friction characteristics. Then, the effects of inner ring speed, radial load, grease filling volume and other factors on the friction coefficient of rolling bearing are analyzed using the Taguchi method.
Findings
The results indicate that the ranking of various factors affecting the friction coefficient is: radial load, inner ring speed, MXene additive content in grease and grease filling volume. Especially, the radial load and inner ring speed exhibit extremely significant effects, while the MXene additive content in grease (P < 0.05) has a significant influence on the friction coefficient of rolling bearing. The optimal condition for rolling bearing lubricated with MXene additives lubricating grease (MALG) achieves the lowest friction coefficient of 0.0049 under 1,000 rpm, 9 kN and 35% grease filling volume.
Originality/value
This study could offer reference solution for utilizing MXene nano-lubrication to fufill the demands of precision, heavy-load, or long-lifespan bearings. Furthermore, the lubrication approach has the potential to be expanded into aerospace, defense, and various industrial fields, thereby significantly promoting its practial engineering applications.
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Jianqi Qiao, Suicheng Li and Antonio Capaldo
Although buying firms increasingly adopt supplier development to help suppliers enhance their ability to deal with environmental issues, little is known about the mechanisms by…
Abstract
Purpose
Although buying firms increasingly adopt supplier development to help suppliers enhance their ability to deal with environmental issues, little is known about the mechanisms by which buyer-led environmental supplier development (ESD) affects the environmental management capabilities (EMC) of suppliers. Focusing on the supplier perspective and specifically on the role of psychological mechanisms at the supplier level, the authors adopt the stimulus–organism–response framework from functionalist psychology to investigate the mediating role of environment-related supplier perceived relationship value in the association between ESD, in the form of environmental requirements and audits (indirect development – ID) vs. direct development projects (direct development – DD), and supplier EMC.
Design/methodology/approach
The authors used structural equation modeling and regression analysis to test the hypotheses using survey data from 221 supplying organizations in China.
Findings
Results reveal that each of the three considered dimensions of the environment-related supplier perceived relationship value (i.e. economic, strategic and co-creation) helps enhance EMC. However, while DD influences positively all three dimensions, ID has a positive effect on only the economic and strategic dimensions. Moreover, the mediation analysis suggests that, while DD affects EMC both directly and via the three dimensions of environment-related supplier perceived relationship value (partial mediation), ID affects EMC only through its impact on environment-related supplier perceived relationship economic and strategic value (full mediation).
Originality/value
The study sheds light on the psychological mechanisms that drive suppliers’ involvement in green supplier development activities. By doing so, it contributes to the understanding of ESD practices and processes and their effectiveness.
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Lianfeng Shen, Jinhua Sun, Lei Miao, Haiping Gu, Shuzhen Qiao, Lei Wang and Wei Wei
The application of galvanized steel is widespread across industries due to its protective zinc coating that protects against atmospheric corrosion. However, previous studies have…
Abstract
Purpose
The application of galvanized steel is widespread across industries due to its protective zinc coating that protects against atmospheric corrosion. However, previous studies have primarily focused on long-term corrosion rates rather than the full-scale corrosion behavior of the zinc. This paper aims to study the full-scale corrosion evolution of galvanic steel under simulated marine atmospheric environment using real-time EIS measurement.
Design/methodology/approach
Electrochemical impedance spectroscopy (EIS) provides an advanced method in monitoring such behavior. Therefore, the EIS method has been used to conduct a comprehensive investigation on the corrosion behavior of galvanic steel in a full-time manner.
Findings
The results indicate that the corrosion process of galvanic steel can be divided into three stages: an initial stage with an increased corrosion rate, a subsequent stage with a reduced corrosion rate, and finally a third stage with the lowest and constant corrosion rate. The evolution of corrosion resistance is closely related to changes in composition and structure of the patina layer. In the initial stage, galvanized steel undergoes the formation of soluble ZnCl2 and needle-like Zn5(OH)8Cl2·H2O, which promotes the generation and maintenance of an electrolyte layer, consequently leading to an increase in corrosion rate. With prolonged corrosion time, there is a continuous accumulation of Zn5(OH)8Cl2·H2O within the patina layer, which reduces the content of soluble components and promotes the development of a denser inner layer, thus enhancing corrosion resistance.
Originality/value
This work holds significance in the monitoring of corrosion, understanding the evolution of corrosion and predicting the lifespan of galvanized steel.
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Csaba János Latorcai, Péter Strausz and Zoltán Csedő
Institutional change (IC) programs in the public sector are often driven by sustainability and digitalisation as contextual factors, contributing to the development of digital and…
Abstract
Purpose
Institutional change (IC) programs in the public sector are often driven by sustainability and digitalisation as contextual factors, contributing to the development of digital and sustainable governance (DSG) systems. This study aims to explore the longitudinal impact of ICs on DSG advancements.
Design/methodology/approach
We collected and analysed data of 200 public sector organisations in two European countries and conducted a longitudinal analysis, focusing on the impact of European Union-funded IC programs.
Findings
Results show that steps towards digital governance (DG) are demonstrably linked to environmental efforts, and EU-funded IC programs could have a long-term positive impact on digital and environmentally sustainable governance in Europe. Findings, however, highlight the unbalanced nature of sustainability governance, as environmental and policy-related conditions and activities seem to be overemphasised.
Practical implications
Environmental policy seems to be established, but future DG initiatives should consider more environmental polity conditions and activities (e.g. dedicated departments), as well as economic and social sustainability to ensure well-balanced governance systems.
Originality/value
To the best of our knowledge, this is the first study that explores empirically how prior IC programs affect future DSG in the public sector.
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Yolanda Ramírez, Montserrat Manzaneque and Elena Merino
This paper aims to investigate the extent of sustainability disclosure through websites at Spanish universities and analyse the determinants that affect such disclosure.
Abstract
Purpose
This paper aims to investigate the extent of sustainability disclosure through websites at Spanish universities and analyse the determinants that affect such disclosure.
Design/methodology/approach
This study uses as methodology a content analysis of the sustainability information disclosed by universities on their official websites in 2022 and a regression of ordinary least squares.
Findings
Findings emphasise that Spanish universities have moderate levels of online sustainability disclosure, close to 50%, showing prevalent attention to dimensions concerning “organisation profile and governance”, “economic aspects” and “labour practices”, while “curriculum and teaching on sustainability topics” and “environmental” dimensions were less addressed. On the other hand, the findings indicate that public and larger universities are the ones most engaged in the online disclosure of information about sustainability issues. Likewise, universities led by female rectors exert a positive influence on sustainability disclosure on websites.
Practical implications
The results could be useful for policymakers and regulators to implement and standardise sustainability reporting at higher education institutions, as well as for managers at universities who wish to increase the diffusion of sustainability outreach to satisfy stakeholders’ demands and legitimise their actions in society.
Originality/value
To the best of the authors’ knowledge, this paper is the first Spanish approach to identify the explanatory factors for sustainability reporting in Spanish higher education institutions.