Excellent Case Research Articles

Carbon emission and energy risk management in mega sporting events: challenges, strategies, and pathways

Carbon emissions from mega sporting events pose a serious challenge to the sustainable development of the global environment, and the management of carbon emissions and energy efficiency in sporting events has become a focus of attention for both countries and international organizations. However, most existing research focuses on carbon emissions in sporting events is limited by a narrow focus on individual cases, limited attention to indirect emissions, insufficient integration of socioeconomic dimensions, a lack of broader data coverage, the adoption of interdisciplinary methodologies, and an emphasis on lifecycle energy risk management to provide robust support for sustainable event practices and policy development. To remedy these deficiencies, this study systematically compiles the current situation of carbon emissions in sports activities, analyzes the carbon emission characteristics and energy-saving potential of different types of sporting events, and summarizes the excellent cases of carbon emission and energy efficiency management in sports activities. The study reveals that large-scale sporting events generate substantial carbon emissions and energy consumption in transportation, venue construction, and event operation. However, carbon emissions and energy usage can be significantly reduced by optimizing venue locations, promoting green transportation, and implementing energy-saving measures at all stages. This study not only provides empirical data and theoretical support for the management of carbon emissions and energy efficiency in sporting events but also proposes practical and feasible suggestions that are highly important for the sustainable development of future sporting events. The findings have reference value for policymakers and event organizers in planning and implementing energy-saving and low-carbon events, helping promote environmental governance and sustainable development in the sports sector.

Achieving a Lighter Shade: Adjusting the Color of Layered Lithium Disilicate Fixed Dental Restorations with Feldspathic Ceramic Veneers

The aim of this case report is to present an aesthetic restoration of the anterior dentition using the feldspathic ceramic veneers. The current study narrows down the analysis to a clinical case where lithium disilicate restorations had an inadequate esthetic result that involved uneven color and the clearly visible discoloration of the substrate. To solve such problems and at the same time maintain esthetics, feldspathic veneers were placed on the teeth. The outcome of the study revealed that the utilisation of feldspathic veneers offers a viable and cosmetically satisfactory solution to the issue of colour differences and surface porosity. A veneer is only successful if it is prepared properly, bonded well, and is made out of feldspathic ceramics which are inherently esthetic. This case thus provides an excellent case against some of the arguments that feldspathic veneers are very poor under heavily reduced circumstance by showcasing how these ceramics can perform well even under these circumstances. The research presented in the work increases the interest in using feldspathic ceramics in restorative dentistry and specific cases, in particular.

A Study on The Influence Of 'She-Economy' Upsurge on The Development of Clothing Companies: Taking Anta as An Example

With the awareness of people's self-consciousness, the 'she-power' of female consumers begins to emerge. The upsurge of the 'she-economy' has become a highly-concerned economic phenomenon. Various industries turned their attention to the female market and female groups. On the basis of previous studies on 'she-economy', this paper focuses on clothing enterprises, summarizing the impacts of this economic phenomenon on the cases concerned in this paper through case study, literature study and event study, so as to provide suggestions for the development of the clothing industry. The study found that the coping strategies made by clothing enterprises in response to the 'she-economy' phenomenon have a significant positive impact on the enterprises themselves, which is reflected in the profitability, asset structure and female consumption performance of the enterprise. Whereas, inappropriate marketing methods may bring a negative impact to enterprises. Hence, enterprises need to exercise sound judgement when making decisions. From the market situation, it can be found that the women's clothing market still has a large development space. In the future, clothing enterprises can learn from the excellent cases in the industry, try to open up the female business, transform the new-born 'she-power' into their customers, expanding their consumer group. Other industries can also carry out researches on the impacts of the 'she-economy' phenomenon, learn from the development experience of those clothing enterprises, and enter the huge consumer market of women's business.

Plastic dislocations: questions of labour and environment in Plastic Heart

In the 1960s, as plastics gained traction as the ubiquitous material of consumer objects, artists began to experiment with the properties of the newly available polymers. Plastics such as latex, fibreglass, acrylic and polyethylene offered access to aesthetic experimentation with colour, reflection, transparency and flexibility. Yet the use of these materials was never without critical reflection, an orientation that strengthened with the passing of time and the increased knowledge of plastics pollution. Though the connections are usually invisible, plastic artworks never stand alone, but in fact drag into the gallery the histories of their manufacture, the extraction of their base materials, their broken relationships with land and water, and their future propensity to break down into smaller pieces and proliferate endlessly. We use the example of the exhibition Plastic Heart: Surface All the Way Through, curated by the Synthetic Collective, to examine how plastics bring the complications of their materiality into the gallery. We argue that exhibition production should attend to both its fossil-fuel consumption and its relations to place. Plastic Heart provides an excellent case study of how plastics and plastics pollution can be dealt with critically within the space of a travelling exhibition.

Dorgan’s lateral cross pinning for displaced pediatric supracondylar fractures of the distal humerus

Background: Supracondylar humeral fractures are the most common elbow fracturesseen in children. Although closed reduction and percutaneous pin fixation is the treatment of choice for displaced supracondylar fractures of the humerus in children, controversy about which pin configuration is best in treating these fractures is ongoing. Some advocate lateral entry pins only while others advocate medial and lateral entry pins. In this study I utilized Dorgan’s cross lateral technique to fix such fractures which is believed to have the advantages of both the conventional pinning techniques. Objectives:To evaluate the functional and cosmetic outcome and complications of cross lateral pinning. Methods: Thirty cases of supracondylar humeral fractures were treated by closed or open reduction with cross lateral pin fixation under fluoroscopic guidance. The elbow was immobilized for a period of 4 weeks after which the pins were removed and physiotherapy initiated. At the end of 12 weeks the patients were evaluated clinically and radiologically and final results were assessed as per Flynn’s criteria. Results: According to Flynn’s criteria, the cosmetic result in my study was evaluated as excellent in 25 cases (83%) and good in 5 cases (17%) and functional result was evaluated as excellent cases in 23 (77%) and good in 7cases (23%). There were no cases of post operative loss of reduction of fractures. Six cases (20%) had pin tract infection while 24 patients (80%) had no complications at all. Conclusions: Cross lateral method of pinning for treating supracondylar fractures is a useful method of fixation as it gives stabilization like medio-lateral pinning and minimizes the risk of injuring the ulnar nerve like lateral pinning.

How to Build a Rural Community to Develop High-Quality Rural Tourism: A Case Study of Innovative Development Strategies for Idle Rural Homesteads in China

In China, rural tourism development constitutes a significant strategy for integrating and utilizing rural resources to achieve rural prosperity. However, reconciling the interests of villagers, government entities, and market actors is difficult in practice, leading to potential pitfalls such as the erosion of rural characteristics, villagers’ rights, and sustainability. The establishment of rural communities in China’s current rural areas can effectively resolve conflicts of interest among diverse stakeholders and address bottlenecks in rural tourism development. However, there is still a lack of theoretical and practical exploration of the maintenance and value realization of rural communities. This study explores the impact of innovative strategies employed during rural tourism development on community growth through a case study of the village of Baifeng in the Anhui province. The results indicate that fostering a sense of community among stakeholders and supporting marginalized groups are the most significant values in the development of rural communities. In practice, effective collaboration and communication among stakeholders, mutual acceptance and conflict resolution, and the development of community emotions/consciousness can help rural communities achieve high-quality construction. This study offers valuable insights into the theoretical advancement of rural communities and represents an excellent case study for the research on rural revitalization and common prosperity.

Mating Behaviour Influences the Direction and Geographic Extent of Introgression in New Zealand Fishing Spiders (Dolomedes).

Introgression is a highly influential process in evolution, where genes flow between species that are not fully reproductively isolated. Studies on introgression often focus on describing gene transfer and environmental changes that facilitate the meeting of species. However, the impact of mating systems and behaviour that facilitate gene transfer is less well-known. Dolomedes aquaticus and D. minor are sister species of fishing spiders undergoing one-way, geographically limited mitochondrial introgression, making them an excellent case study for the factors that promote and limit introgression. We used a combination of field observations and crossing experiments to systematically investigate potential pre-fertilisation barriers that could limit introgression and explain the one-way and geographic barriers to introgression in these species. We found that habitat overlap and timing of reproductive maturity were not likely to be important limiting factors to introgression. However, behaviour was an important factor, with male mate choice being implicated in the geographic limitation, and female mate choice being implicated in the one-way limitation. Our results show the importance of using behavioural approaches in the investigation of introgression.

Phosphorylation of cytochrome c at tyrosine 48 finely regulates its binding to the histone chaperone SET/TAF-Iβ in the nucleus.

Post-translational modifications (PTMs) of proteins are ubiquitous processes present in all life kingdoms, involved in the regulation of protein stability, subcellular location and activity. In this context, cytochrome c (Cc) is an excellent case study to analyze the structural and functional changes induced by PTMS as Cc is a small, moonlighting protein playing different roles in different cell compartments at different cell-cycle stages. Cc is actually a key component of the mitochondrial electron transport chain (ETC) under homeostatic conditions but is translocated to the cytoplasm and even the nucleus under apoptotic conditions and/or DNA damage. Phosphorylation does specifically alter the Cc redox activity in the mitochondria and the Cc non-redox interaction with apoptosis-related targets in the cytoplasm. However, little is known on how phosphorylation alters the interaction of Cc with histone chaperones in the nucleus. Here, we report the effect of Cc Tyr48 phosphorylation by examining the protein interaction with SET/TAF-Iβ in the nuclear compartment using a combination of molecular dynamics simulations, biophysical and structural approaches such as isothermal titration calorimetry (ITC) and nuclear magnetic resonance (NMR) and in cell proximity ligation assays. From these experiments, we infer that Tyr48 phosphorylation allows a fine-tuning of the Cc-mediated inhibition of SET/TAF-Iβ histone chaperone activity in vitro. Our findings likewise reveal that phosphorylation impacts the nuclear, stress-responsive functions of Cc, and provide an experimental framework to explore novel aspects of Cc post-translational regulation in the nucleus.

Book Review: The Copyright Thing Doesn’t Work Here: Adinkra and Kente Cloth and Intellectual Property in Ghana

The Copyright Thing Doesn’t Work Here: Adinkra and Kente Cloth and Intellectual Property in Ghana, by Boatema Boateng, is an excellent case study of the uneasy fit between the global intellectual property (IP) system and postcolonial contexts, as well as a great introduction to challenges in the field for readers seeking more just IP systems. IP makes creative work legible for certain kinds of ownership: it arbitrates who can copy what, and ideally gets somebody paid. But who? The answer, in the case of adinkra and kente cloth, is often not the artisans but the nation-state that claims the work as collectively “Ghanian,” and factories in Asia that scale up production of the designs for their own, cheaper textiles. “IP” overrides the significance of the cloth to its producers and their understandings of copying, appropriate remuneration, and authorship.

The Impact of Early Diagenesis on Biosignature Preservation in Sulfate Evaporites: Insights From Messinian (Late Miocene) Gypsum.

Due to their fast precipitation rate, sulfate evaporites represent excellent repositories of past life on Earth and potentially on other solid planets. Nevertheless, the preservation potential of biogenic remains can be compromised by extremely fast early diagenetic processes. The upper Miocene, gypsum-bearing sedimentary successions of the Mediterranean region, that formed ca. 6 million years ago during the Messinian salinity crisis, represent an excellent case study for investigating these diagenetic processes at the expense of organic matter and associated biominerals. Several gypsum crystals from the Northern Mediterranean were studied by means of destructive and non-destructive techniques in order to characterize their solid inclusion content and preservation state. In the same crystal, excellently preserved microfossils coexist with strongly altered biogenic remains. Altered remains are associated with authigenic minerals, especially clays. The results demonstrate that a significant fraction of organic matter and associated biominerals (notably biogenic silica) underwent early diagenetic modification. The latter was likely triggered by bottom sulfidic conditions when the growth of gypsum was interrupted. These results have significant implications for the interpretation of the Messinian Salt Giant.

Shifting the gaze on welfare-state sustainability in Norway: a proposal for a relational global view

Norway is an excellent case for studying the ambiguities and competing interests attached to climate change and global sustainability. The country is at the forefront in the use of “clean energy,” yet has long been one of the world’s largest oil exporters and its dominant ideas have been challenged given the climate-change crisis. The article offers a preliminary review of the historical and current connections that exist between the development of national welfare states in Europe (and Norway in particular) and the long-standing practice of extractivist efforts that have harmed nature in indigenous lands within Norwegian borders and colonized, or previously colonized lands, outside Europe). As a comparative exercise, this article mobilizes the idea of social imaginaries to conceptualize and explore how the Norwegian welfare state has, in the social policy literature and in public discourse, been linked to the notion of sustainability, given the context of rapid climate change. By drawing on three illustrative cases, the article demonstrates how such imaginaries are present in current discussions. It suggests that unpacking such imaginaries within a historical and relational global view may contribute to understanding the role of nationalism and colonialism in Norway’s sustainability narratives, to potentially trigger change in the way we conceptualize welfare-state sustainability.

Anatomy of the Star Formation in a Tidally Disturbed Disk Galaxy: NGC 3718

We present a UV, optical, and near-IR study of the star-forming complexes in the nearby peculiar galaxy NGC 3718, using Ultraviolet Imaging telescope, Galaxy Evolution Explorer, Spitzer, and DECam Legacy Survey imaging data. The galaxy has a disturbed optical morphology owing to the multiple tidal arms, the warped disk, and the prominent curved dust lanes, but in the near-IR it appears to be a bulge-dominated galaxy. Its disturbed morphology makes it an excellent case to study star formation in a tidally disturbed galaxy that may have undergone a recent minor merger. To study the distribution and properties of the star-forming clumps (SFCs), we divided the galaxy within the R 25 (B band) radius into three parts—the upper, central, and lower regions. Using the UV band images, we investigated the warped star-forming disk, the extended tidal arms, and the distribution and sizes of the 182 SFCs. Their distribution is 49, 60, and 73 in the galaxy’s upper, central, and lower regions, respectively. We determined the UV color, star formation rates (SFRs), star formation density (ΣSFR), and ages of the SFCs. The central disk of the galaxy has a larger mean ΣSFR that is ∼3.3 and ∼1.6 times higher than the upper and lower regions, respectively. We also find that the SFCs in the central disk are older than those in the tidal arms. Our study thus shows that minor mergers can trigger the inside-out growth of galaxy disks, where the younger SFCs are in outer tidal arms and not in the inner disk.

Island biocultural diversity in the Mediterranean: the case study of Sardinia

The Mediterranean Basin is a hotspot for biological and cultural diversity, and this is particularly evident in its islands, even though little attention has been paid to their remarkable biocultural diversity. In order to elucidate this characteristic phenomenon, we present a review of the literature on biodiversity and cultural studies in Sardinia. From the review, it has emerged that the island can serve as an excellent case study and a model for the development of a methodology on the topic, which can be applied to the entire Mediterranean Basin. An Island Biocultural Diversity Initiative for the Mediterranean Region has therefore been set up to support the preservation of biocultural diversity and Traditional Ecological Knowledge (TEK) in Mediterranean islands, with Sardinia as its primary hotspot.

Weird Waterways: Blue Humanities and Eerie Canals in the Midlands

ABSTRACT This article explores the eerie and uncanny qualities associated with the Midlands canal network, with particular focus on the gothic and weird fiction produced by three writers: Robert Aickman, Elizabeth Jane Howard, and L. T. C. Rolt. The article redresses the neglect canals have faced within the field of study known as the blue humanities and argues for the distinctive – and haunting – forms of affect and knowledge that canals can bring to humanities scholarship invested in bodies of water and their histories. Because of the extensive size of its canal network, the Midlands makes an excellent case study for establishing the role of the canal in the blue humanities. At the same time, the article argues for the value of apprehending the Midlands, particularly Birmingham and the surrounding region, as a richly aqueous or ‘blue’ space, a region saturated and shaped by its inland waterways.

Constructing sympatry networks to assess potential introgression pathways within the major oak sections in the contiguous US states

Societal Impact StatementIncreasing evidence indicates gene flow commonly occurs between closely related species in diverse plant genera and can involve numerous species. Here, we present a simple method to quantify and characterize the potential for gene flow among “sympatric” species (they share some part of their geographic distribution), using oaks as a case study. The resulting sympatry networks provide insight into potential interspecific gene flow, from the perspective of each species and across the entire suite of interfertile species. In a rapidly changing world, interspecific gene flow will play an increasingly important role in the conservation of endangered species, both positive and negative.Summary We provide a simple method, using geographic distribution data, to quantify and characterize sympatry networks among a suite of interfertile species to assess potential routes for introgressive hybridization (IH). Sympatry is a necessary condition for IH and is easily determined from widely available geographic distribution data. Oaks, famous for hybridization, present an excellent case study. We use county‐level data for 94 oak species in the contiguous US states to determine patterns of sympatry of species within the four sections, assumed to be interfertile. The pairwise sympatry relationships can generate species‐centric local networks or a syngameon‐wide network. Two different measures of sympatry are used: proportional and relative. Most oak species are exposed to IH from many species, with red oaks having slightly higher local levels of sympatry (5.7 vs. 3.8 spp per county) than white oaks but lower total numbers of sympatric species (13.7 vs. 14.8). The nature of potential IH generally differs for threatened species, which are often embedded in the much larger distributions of widespread species. Potential IH within oak sections is widespread and disproportionately affects rare species. Given that IH has potentially positive or negative impacts on species cohesion, persistence, and adaptation, the geographic connections among species and the ‘local sympatry effect’ can serve as a springboard for hypothesis generation and genetic investigation of introgression patterns.

A targeted gene phylogenetic framework to investigate diversification in the highly diverse yet geographically restricted red devil spiders (Araneae, Dysderidae).

The family Dysderidae is a highly diverse group of nocturnal ground-dwelling and active-hunter spiders. Dysderids are mostly restricted to the Western Palearctic, and particularly rich and abundant around the Mediterranean region. Interestingly, the distribution of species richness among its 24 genera and three subfamilies is highly biased-80% of its 644 documented species belong to just two genera, Dysdera (326) and Harpactea (211). Dysderidae provides an excellent study case for evolutionary and ecological research. It includes cases of trophic specialization, which are uncommon among spiders, and exhibit other remarkable biological (e.g. holocentric chromosomes), behavioural (e.g. cryptic female choice), evolutionary (e.g. adaptive radiation) and ecological features (e.g. recurrent colonization of the subterranean environment). The lack of a quantitative hypothesis on its phylogenetic structure has hampered its potential as a testing ground for evolutionary, biogeographical and ecological hypotheses. Here, we present the results of a target, multi-locus phylogenetic analysis, using mitochondrial (cox1, 16s and 12s) and nuclear genes (h3, 28s and 18s), of the most exhaustive taxonomic sample within Dysderidae (104 spp.) to date and across related families (Synspermiata) (83 spp.). We estimate divergence times using a combination of fossil and biogeographic node calibrations and use this timeline to identify shifts in diversification rates. Our results support the monophyly of the Dysderidae subfamilies Rhodinae and Dysderinae but reject Harpacteinae as currently defined. Moreover, the clades recovered within Harpacteinae do not support its current taxonomy. The origin of the family most likely post-dated the break-up of Pangea, and cave colonization may be older than previously considered. After correcting for the taxonomic artefacts, we identified a significant shift in diversification rates at the base of the genus Dysdera. Although the unique coexistence of specialist and generalist diets within the lineage could be suggested as the potential driver for the rate acceleration, further quantitative analyses would be necessary to test this hypothesis.

Do you speak Français? The hidden social structures of bilingualism at an international boarding school

This article investigates linguistic practices related to students’ social and academic lives – something that has been overlooked in the research literature on international schooling and elite boarding schools. Pierre Bourdieu reminds us that language has a social dimension linked to relations of symbolic power. Boarding schools serve as excellent case studies on how language structures social life due to their closed social space. Drawing on Bourdieu’s relational sociology, an ethnography was carried out at the College of Europe, an international private boarding school. Findings show that the practice of bilingual code-switching was endowing the institution with social distinction while hierarchically dividing its students. Three modes of student attitudes towards bilingualism were identified. While students’ bilingual attitudes and strategies were correlated to their social positions, socioeconomic origins and previous trajectories, the former were not deterministically an effect of said social position, evidenced by an observed case of habitus transformation.

Comparison of three reanalysis‐driven regional climate models over New Zealand: Climatology and extreme events

AbstractThree ~12‐km reanalysis‐driven regional climate models (RCMs) are evaluated in terms of capturing climatologies and extremes of precipitation, temperature and surface wind over Aotearoa/New Zealand (NZ). NZ provides an excellent case study for evaluating high‐resolution RCMs due to its coastal and complex terrain and isolated geographical position in the midlatitudes, exposed to both tropical and polar influences. Overall, we find that the RCMs faithfully reproduce the observed climate, with precipitation and temperature climatologies particularly well‐captured. However, the RCMs display significant differences from observations in capturing the surface wind climatology, highlighting a remaining key challenge. The excess “drizzle problem” is apparent to varying degrees, leading to a weaker representation in the length of meteorological drought in some regions. The RCMs also diverge in reproducing diurnal temperature range which appears partly related to cloud cover. Finally, we discuss the important role of observational uncertainty in the context of model evaluation.

Indenture Beyond the ‘Coolie’ Trade: Reinitiating Chinese Indentured Migration to Cuba after the Chinese Commission Report (1874–1920)

ABSTRACT The historiography of Chinese indenture in Cuba is very clear when it comes to its periodization, establishing the start date of the trade in 1847 and the end in 1874. This periodization is based upon the arrival of the first and the last ships carrying Chinese indentured labourers. Thus, studies on the so-called ‘coolie trade’ focus on the period between these dates. What happened after the arrival of the last ship has attracted less attention. The end of the trade, after all, did not coincide with the end of indenture in Cuba, either in legal terms or in practice. By the 1880s there were still Chinese indentured labourers in Cuba who had not finished their contracts. Furthermore, after 1874 there were attempts to restore the trade in Chinese migrants: firstly, in 1877; and later, in 1919. Chinese indenture in Cuba is an excellent case study by which to problematize the meaning of ‘abolition’ and inquire on the nature of ‘indenture’. Using multilingual source material, this article suggests a continuous view of indenture in Cuba beyond the 1874 hallmark, and pinpoints the debt generated at the moment of recruitment to pay for the emigrating costs as the single most important defining mechanism of indenture.

Nudge 디자인 사례의 중국 공공디자인 적용 연구

Recently, the world's attention to Nudge theory has begun to emerge in various fields. Nudge design induces people to choose in a more rational and beneficial way. If the promotion design is applied to the public design, it can create an atmosphere that is more active and conducive to social prosperity. However, since research on Nudge is still insufficient in China, it is necessary to explore how the fun theory of Nudge design can be combined with Chinese public design and to guide Chinese public design. In order to achieve this goal, first, theoretical considerations on the types of fun theory, Nudge design concepts, fun elements, and effect models are found through literature research to secure the accuracy of the method proposal based on this. Secondly, nine design methods were summarized through analysis of three types of fun theory and nine excellent case studies. Thirdly, experimental design was conducted in Chengdu, China, and data were collected through a survey. Fourth, the reliability and validity of the survey data were verified using SPSS software. With this, it was concluded that the design method proposed in this study could be applied to the Chinese public design field and have a positive effect.