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As shifting populations change suburban school enrollment, education policy trends formerly confined to urban districts have spread to suburban ones. Many suburban school districts have experienced growth in the charter school sector, as well as a rash of school closures. Suburban schools and districts reflect broader societal problems, paradigms, and possibilities. Yet, if our society is to advance equitable opportunity for all, children learning together in suburban schools must be part of the solution. In order to think clearly about what a renewed civil rights agenda entails given our complex and multiracial geography of inequality, we must understand the extent to which suburban school districts are segregated—and why. We also need to think deeply about policy responses to advance integration with equitable status for all children. This paper draws on federal enrollment data from the nation’s largest 25 metros from 2011-2020 to descriptively analyze suburban school enrollment and segregation at the school district-level, seeking to understand different district contexts and their relationship to student segregation.

Hydrogen segregation behaviors at BCC-Fe Σ3 (111) grain boundary (GB) as well as the effects of alloying solutes were studied by the first-principles method. The segregation energy of alloying solutes at different periods presents a concave-down parabolic-like relationship with the atomic number, and the 4 d transition alloying solutes show a higher averaged segregation tendency. At the favorable trapping site, hydrogen segregation energy decreased by increasing the number of hydrogen atoms up to 0.85/Å2 in the plane vertical to the GB. Mo, Tc, Ru, Ta, W, Re, Os, and Ir strengthen GB and inhibit hydrogen segregation. Significantly, the interaction between alloying solutes and hydrogen segregation was elucidated by emphasizing the separation of the chemical and the mechanical contributions, and appropriate descriptors on hydrogen segregation energy influenced by alloying solutes were screened. This work offers theoretical backing to comprehend hydrogen segregation behaviors and the effects of alloying solutes to design advanced high-strength steels resistant to hydrogen embrittlement. • Hydrogen segregation behaviors at pure BCC Σ3 (111) grain boundary were studied. • Alloy solute segregation behaviors at pure BCC Σ3 (111) grain boundary were studied. • Interaction between alloying solutes and hydrogen at grain boundary was elucidated. • Descriptors on hydrogen segregation energy at grain boundary were screened. • Relationship between hydrogen segregation at grain boundary and HE was discussed. [ABSTRACT FROM AUTHOR]

Introduction and aim: Ethnically diverse neighborhoods encounter pronounced inequalities, including housing segregation and limited access to safe outdoor spaces. Residents of these neighborhoods face challenges related to physical inactivity, including sedentary lifestyles and obesity in adults and children. One approach to tackling health inequalities is through family-based programs tailored specifically to these neighborhoods. This study aimed to investigate parents' experiences and perceptions of the family-based Open Activities, a cost-free and drop-in program offered in ethnically diverse and low socioeconomic neighborhoods in Sweden. Methods: Researchers' engagement in 15 sessions of the Open Activities family-based program during the spring of 2022, and individual interviews with 12 participants were held. Data were analyzed using reflexive thematic analysis. Results: The analysis resulted in three main themes and seven sub-themes representing different aspects of the program's meaning to the participants as parents, their families, and communities. The main themes describe how parents feel valued by the program, which actively welcomes and accommodates families, regardless of cultural differences within these neighborhoods. The themes also show how cultural norms perceived as barriers to participation in physical activity can be overcome, especially by mothers who express a desire to break these norms and support girls' physical activity. Additionally, the themes highlight the importance of parents fostering safety in the area and creating a positive social network for their children to help them resist criminal gang-related influences. Conclusions: The program's activities allowed parents to connect with their children and other families in their community, and (re)discover physical activity by promoting a sense of community and safety. Implications for practice include developing culturally sensitive activities that are accessible to and take place in public spaces for ethnically diverse groups, including health coordinators that can facilitate communication between groups. To enhance the impact of this program, it is recommended that the public sector support the creation of cost-free and drop-in activities for families who are difficult to reach in order to increase their participation in physical activity, outreach, and safety initiatives. [ABSTRACT FROM AUTHOR]

This study investigated the effects of using bagasse ash (BA) and metakaolin (MK) together as substitutes for cement in self-compacting concrete (SCC), together with the addition of glass fiber (GF), on the physical and mechanical characteristics of concrete. Eighteen SCC mixes were created, each containing different proportions of BA (0%, 10%, 15%, and 20%), MK (0%, 10%, 15%, and 20%), and BA and MK collectively (10% + 5% and 10% + 10%) as cement replacements with and without 0.1% GF. Using the results of the slump flow, T500 slump flow, V-funnel, and L-box tests, the performance of fresh SCC was determined. Furthermore, this study evaluated the strength, durability, and microstructural properties of the SCC samples. The SCC mix blended with 10% BA and 5% MK revealed better flowability as the slump flow increased from 692 mm to 715 mm. A strong linear correlation was discovered between the slump flow values (mm) and V-funnel duration (sec) and blocking ratio (H2 /H1 ) with R² = 0.8876 and R² = 0.8467, respectively. Of all test mixes, the SCC mix blended with 10% BA, 5% MK, and 0.1% GF (SCC1B10M5) demonstrated the highest degree of strength. At 56 days, the 10% BA, 5% MK, and 0.1 GF mix had 12.8%, 25.7%, and 22.2% higher compressive, flexural, and splitting tensile strengths than the control mix, respectively. SCC, combined with BA, MK, and GF, outperformed the control mix. After immersion in a 3% H2SO4 solution, the SCC mix having 10% BA, 5% MK, and 0.1% GF experienced a minimum reduction in weight loss and ultrasonic pulse velocity of 1.01% and 3.1%, respectively. Additionally, there was a decrease of 29.4% in the percentage of charges passed. The ideal composition was achieved by incorporating 10% BA, 5% MK, and 0.1% GF into the SCC mixture, resulting in a dense structure without any visible pores or cracks during the microstructural analysis. [ABSTRACT FROM AUTHOR]

This article is the result of research carried out by a group of activists who advocate for the rights of children with disabilities. They are exploring new approaches to both school counselling and the fight against segregation in order to improve the situation of children in the Spanish education system. It focuses on how the psychoeducational report is a key tool for legitimising school segregation, and how deconstructing it is essential for building inclusive schools. The data analysed were collected from 100 people from all over Spain who took part in a Participatory Action Research project focused on emerging narratives on inclusive schooling. The aim of the project was to gather accounts of the experiences of pupils, families, and activist professionals who are engaged in a determined struggle to make schools inclusive. Participants were able to share their experiences, conduct their analysis through assemblies and cooperative groups, and use networking to transform existing policies, cultures, and practices. The information obtained indicates that the labels used by current psychoeducational reports are based on a clinical model and are focused on children's deficiencies. They provide limited knowledge about the individuals involved and exercise strong social and symbolic control over them and others. [ABSTRACT FROM AUTHOR]

Why do many people underestimate economic and racial inequality and maintain that theirs is a meritocratic society? Existing work suggests that people are rationalizing, misinformed, or misled. This article proposes an additional explanation: Inequality itself makes economic and racial disparities difficult to understand. In unequal societies, individuals establish their networks at formative institutions patterned by class and race. As a result, they unwittingly condition on key causal pathways when making descriptive and causal inferences about inequality. We use a simple agent-based model to show that, under circumstances typical to highly stratified societies, individuals will underestimate the extent of economic and racial inequality, downplay the importance of inherited advantages, and overestimate the relative importance of individual ability. Moreover, we show that they will both underestimate the extent of racial discrimination and overestimate its relative importance. Because segregated social worlds bias inference in these ways, all individuals (rich and poor) have principled reasons to favor less redistribution than they would if their social worlds were more integrated. [ABSTRACT FROM AUTHOR]

A longstanding urban sociological literature emphasizes the geographic isolation of city dwellers in residence and everyday routines, expecting exposures to neighborhood racial and socio-economic structure driven principally by city-wide segregation and the role of proximity and homophily in mobility. The compelled mobility approach emphasizes the uneven distribution of organizational and institutional resources across urban space, expecting residents of poor Black-segregated neighborhoods to exhibit non-trivial levels of everyday exposure to White, non-poor areas for resource seeking. We use two sets of location data in the hypersegregated Chicago metro to examine these two approaches: Global Positioning System (GPS) location tracking on a sample of older adults from the Chicago Health and Activity Space in Real-Time (CHART) study and travel diaries on a sample of younger adults by the Chicago Metropolitan Agency for Planning (CMAP). We introduce a novel and flexible individual-level method for assessing activity space exposures that accounts for the spatially proximate environment around home. Analyses reveal that activity space contexts mimic the racial/ethnic and socio-economic landscape of respondents' broad residential environment. However, after residential-based adjustment, Black younger (CMAP) adults from poor Black neighborhoods are disproportionately exposed to Whiter, less Black but less non-poor neighborhoods. Older (CHART) adult activity spaces align more closely with their residential areas; however, activity spaces of poor-Black-neighborhood-residing CHART Blacks are systematically poorer and, less consistently, more Black and less White after local area adjustment. Implications for understanding contextual exposures on well-being and the potential for age or cohort differences in isolation are discussed. [ABSTRACT FROM AUTHOR]

Pavement construction monitoring and quality assurance (QA) practices are based mostly on costly, discrete, and destructive methods. Most quality assurance programs are based on pavement construction procedures encompassing in situ coring for layer thickness determination, density measurements, laboratory testing to measure volumetric properties, and smoothness measurements in the case of the availability of an inertial profiler. However, most of these practices are costly and/or destructive. Therefore, the key objective of this study was to develop a quality assurance decision-making tool that can predict pavement roughness, in terms of the International Roughness Index (IRI), and aggregate segregation based on digital image analysis, image recognition, and deep machine learning models. The developed models were trained, tested, and validated using 600 pavement surface images extracted from the Louisiana Department of Transportation and Development (LaDOTD) Pavement Management System (PMS). Furthermore, the effectiveness of the convolution neural network (CNN) model was validated using pavement surface images collected at construction sites in Louisiana a few days after paving. The roughness model predicted the International Roughness Index values with a coefficient of determination R2 of 0.98 and a RMS error (RMSE) of 3.5%. In addition, the developed image-processing model for the detection of aggregate segregation achieved acceptable accuracy. To support the implementation of these results, the models were incorporated into a computer application that can be used by site engineers for quality assurance without the need for coding software on their device. [ABSTRACT FROM AUTHOR]

Advocates often predict that school choice policies will expand access to high-quality schools, particularly for marginalized communities. To interrogate this assumption, we employed a sequential mixed-methods analysis examining the state of charter reform in the District of Columbia. We observed that stakeholders consistently defined equity as uniform processes, evident in data distribution and enrollment practices. We also uncovered persistent disparities in where students live versus learn. We conclude that race-neutral conceptions of equity may hinder attempts to improve school access by ignoring structural inequalities tied to race, place, and income and by overlooking privileged households' efforts to remain separate. [ABSTRACT FROM AUTHOR]

Solidification structure and segregation behavior of S31254 superaustenitic stainless steel ingot containing 0 wt% B and 0.005 wt% B are investigated. The results show that serious element segregation and massive eutectics are present in the center of the ingot. By contrast, the addition of boron reduces the secondary dendrite spacing, the degree of elemental segregation, and the σ phase. Further, the effect of boron on the solidification process is studied by using the high‐temperature confocal laser scanning microscope and combined with Thermo‐Calc thermodynamic simulation results. The results show that boron can widen the solidification temperature range and greatly retard the matrix solidification. The role of boron in refining dendrite structure and inhibiting precipitation is further confirmed. The effect of boron on the constitutive equation of S31254 superaustenitic stainless steel has also been researched through isothermal compression testing in the temperature range of 950–1200 °C and strain rate range of 0.01–10 s−1. The activation energy of the boron‐free and boron‐containing S31254 superaustenitic stainless steels based on the constitutive equation are 427.77 and 495.80 kJ mol−1, respectively. Processing maps indicate that the instability domain is significantly reduced and the hot ductility is improved after the addition of B. [ABSTRACT FROM AUTHOR]

Little research examines the experiences and perspectives of Asian American parents who participate in K–12 desegregation efforts, such as magnet schools. Conceptually framed by research on Asian American racialization, this qualitative case study investigates 10 Asian American parents in metropolitan Hartford, Connecticut; and the motivations underpinning their decisions to choose magnet schools for their children. I find that most parents emphasized 'diversity' over 'desegregation' when explaining their decision to choose magnet schools. This pattern demonstrates parents' limited engagement with racialized power structures and with how Asian Americans are situated within the American racial order. Findings reflect research on the invisibility and racial ambiguity of Asian Americans in policy and political discourses. Thus, findings point to the need for desegregation and other educational policies to center Asian American' nuanced backgrounds and experiences. [ABSTRACT FROM AUTHOR]

The article presents an interview with Mark Malone discussing his research on William Levi Dawson. Topics include Dawson's experiences with racial segregation and his influences from composer Antonín Dvořák, his focus on Negro spirituals in his compositions, and his lifelong commitment to Tuskegee Institute and its educational legacy.

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Segregation based on caste, religion, and ethnicity exists primarily in the urban housing market in India even in cosmopolitan urban centres like Mumbai, Delhi, Bengaluru, Kolkata, and Hyderabad. The present study maps segregation in Hyderabad and explores its intricate linkages with access to public amenities. This study examines caste-based segregation in urban space using multiple indexes like dissimilarity index (DI), isolation index, interaction index, correlation analysis, and mandal development index (MDI). It is observed that there is no clear link between caste-based DI and MDI. The correlation of MDI and caste-based DI illustrates that it is the location (core or periphery) that decides the level of infrastructural development. This investigation of the link between residential segregation measurement of DI and MDI leads us to conclude that the historical factors are equally crucial along with the social identities to explain urban segregation and discrimination. [ABSTRACT FROM AUTHOR]

Post-war social housing estates in Europe have been undergoing wide-scale regeneration to improve the physical decay of these sites and address the concentration of vulnerable residents in these areas, which has resulted in their social segregation, marginalisation and stigmatisation. As these estates cover and affect quite large public spaces, holistic approaches have recently been adopted. Bearing in mind that each regeneration case is unique, this paper describes the collaborative approach taken in the regeneration of Gyldenrisparken in Denmark, which evolved from a desperate situation to a best practice case. The paper focuses on the spatial decision-making process — in particular, how the architectural quality of physical interventions was established and how participatory mechanisms were utilised and developed to enable liveable spaces and sustainable regeneration. Making use of a combination of qualitative documentary analysis and in-depth interviews with key actors, this study encompasses the whole regeneration process, including initiatives taken by the housing association and municipal agents, the methodology developed to collect ideas and implement them in the physical design of the public spaces, and the social effort to make the whole process sustainable and the estates liveable. It concludes that post-war estates have the potential to secure their future by embracing physical and social efforts through proactive empowerment strategies and creating new spatial identities. [ABSTRACT FROM AUTHOR]

A simple parent request unveiled a startling revelation: The principal of Bridgforth Elementary School segregated students by race. Her attempt to establish a culturally responsive framework was met with an Office of Civil Rights (OCR) complaint of racial discrimination. This case will examine the principal's rationale for creating the framework, the parental complaint, the school community response, and two evidence-based options for increasing student outcomes for African American students and other ethnic minorities. [ABSTRACT FROM AUTHOR]

This article examines the extent to which the increasing ethnic diversity of Northern Europe’s population translates into exposure between natives and migrants (and their descendants) in the workplace, using Danish register data over nearly three decades. Consistent with the expectations of neo-assimilation theory, we find that Danish workplaces have become a common site of mutual exposure, including exposure between natives and two subcategories of culturally distant migrants. At the same time, consistent with segmented assimilation theory, we find increasing segmentation, even in a highly regulated Danish labour market. The distribution of migrants and their descendants in workplaces increasingly deviates from a (simulated) random distribution and we find increasing discrepancies between opportunity pools and exposure levels, particularly at the lower end of the labour market. By opening the black box of workplace composition, this article demonstrates the co-occurrence of increased exposure and labour market segmentation, with its potential to respectively facilitate and hinder integration. [ABSTRACT FROM AUTHOR]

Ecologists often leverage contributory science, also referred to as citizen science, to answer large-scale spatial and temporal biodiversity questions. Contributory science platforms, such as eBird and iNaturalist, provide researchers with incredibly fine-scale data to track biodiversity. However, data generated by these platforms are spatially biased. Research has shown that factors like income, race, and historical redlining can influence spatial patterns of reported eBird and iNaturalist data. However, the role of contemporary residential segregation remains unclear. Additionally, we do not understand how these variables potentially relate to certain Census tracts having more or less biodiversity data than you would expect based on size or population density. To further understand the social factors that may contribute to spatial biases in eBird and iNaturalist data, we focused on three cities within the USA (Oakland, California; St. Louis, Missouri; and Baltimore, Maryland). We specifically investigated how income, race, segregation, and redlining via Home Owners' Loan Corporation grades (grades A = best, B, C, and D = hazardous and "redlined") are associated with the difference between reported and expected observations based on area and human population density. We find that census tracts with higher income and more White people generally have more observations than expected. We only find segregation to influence differences in reported and expected observations in Baltimore, with more segregated Census tracts having more observations than expected. Lastly, we find that grades C and D consistently have fewer data than expected compared with grades A and B for both platforms in each city. Our results show that although each city has distinct societal and ecological features, societal inequity permeates each city to shape the uptake of data for two of the largest sources of biodiversity data. [ABSTRACT FROM AUTHOR]

Rather than a radical new way of entangling space and society fashioned by late capitalism and neoliberalism, gated communities are the latest iteration of a long chain of power mechanisms devised to reproduce racial hierarchies and to defend "proper citizens" against internal and external enemies. Based on ethnographic data produced in Nordelta, one of Latin America's largest gated communities, this article concentrates on a twofold process through which Nordelteños produce their social and physical spaces: first, on the relationships they establish with their surroundings, negating its natural and cultural dimensions, and second, on the different technologies they have deployed to exclude, monitor and sanction the nearby "improper" population. In a country that has never ceased to define its legitimate citizenry upon their own category of "whiteness", this analysis contributes to understand how Argentine gated communities entangle elites, racism and segregation to produce a space of exception. [ABSTRACT FROM AUTHOR]

Women's representation in managerial positions is a common metric for gender equity in organizations. Whether women managers improve gender equity among their subordinates is, however, less clear. Drawing on rich longitudinal personnel data from a large Korean food company, we provide new insight into this question by focusing attention on key micro-contexts for interaction and relational politics within organizations: workgroups. Building on social-psychological theories about in-group preference and value threats, we theorize that workgroup gender composition conditions the relationship between supervisor gender and gender earnings differentials. Results from regression models with workgroup fixed effects confirm this insight. Women supervisors are associated with smaller gender earnings gaps in workgroups when they are male-dominated. This relationship is stronger for less-advantaged workers, with supervisor gender and workgroup gender composition mattering more for "sticky floors" than "glass ceilings." [ABSTRACT FROM AUTHOR]

To investigate the effect of racial residential segregation on disparities between Black and White patients in stage at diagnosis, receipt of surgery, and survival. Subjects included Black and White patients diagnosed with ovarian cancer between 2005 and 2015 obtained from the Surveillance, Epidemiology, and End Results Program. Demographic data were obtained from the 2010 decennial census and 2013 American Community Survey. The exposure of interest was the index of dissimilarity (IOD), a validated measure of segregation. The outcomes of interest included relative risk of advanced stage at diagnosis and surgery for localized disease, 5-year overall and cancer-specific survival. Black women were more likely to present with Stage IV ovarian cancer when compared to White (32% vs 25%, p < 0.001) and less often underwent surgical resection overall (64% vs 75%, p < 0.001). Increasing IOD was associated with a 25% increased risk of presenting at advanced stage for Black patients (RR 1.25, 95% CI 1.08, 1.45), and a 15% decrease for White patients (RR 0.85, 95% CI 0.73, 0.99). Increasing IOD was associated with an 18% decreased likelihood of undergoing surgical resection for black patients (RR 0.82, 95% CI 0.77, 0.87), but had no significant association for White patients (RR 1.01, 95% CI 0.96, 1.08). When compared to White patients in the lowest level of segregation, Black patients in the highest level of segregation had a 17% higher subhazard of death (HR 1.17, 95% CI 1.07, 1.27), while Black patients in the lowest level of segregation had no significant difference (HR 1.13, 95% CI 0.99, 1.29). Our findings demonstrate the direct harm of historical government mandated segregation on Black women with ovarian cancer. • Black women with ovarian cancer present later, receive less surgery, and have increased mortality compared to white women. • These disparities are exacerbated when levels of racial residential segregation are increased. • In areas of low racial residential segregation, the mortality discrepancy between Black and white women is comparable. • We illustrate how historical racist housing policy affects current health outcomes for Black women with ovarian cancer. [ABSTRACT FROM AUTHOR]

Despite decades of crime decline, police surveillance has continued to expand through a range of tactics oriented towards policing social disadvantage. Yet, despite attention to the linkages between residential inequality and policing, few studies have accounted for two intertwined structural developments since the turn of the 21st century: (1) the shift away from spatially concentrated patterns of racial segregation within urban centers towards sprawling patterns of economic segregation and (2) the turn from reactive policing towards proactive surveillance. Using the case of big data policing, we create a new measure of big data surveillance in metropolitan areas to examine how changes in segregation have affected the expansion of proactive police surveillance. In contrast to theoretical accounts emphasizing the role of police surveillance in governing economic inequality and perpetuating racial segregation, we do not find evidence that racial segregation or income inequality increase big data surveillance. Instead, much of the recent rise in big data policing is explained by increases in sprawling patterns of income segregation. These results provide new insight into the linkages between policing and residential inequality and reveal how changes in metropolitan segregation influence criminal justice surveillance in the era of big data. [ABSTRACT FROM AUTHOR]

We clarify the relationship between greening and gentrification by examining the sociospatial dynamics that characterize and drive "green gentrification." Through a conversation with the growing literature on green gentrification, we show that this relationship is nuanced and contingent upon contextual factors and we depict the exclusions at stake. In short, green gentrification is a process that generates urban green sacrifice zones, by which historically marginalized residents are forced away from greener neighborhoods, often segregated to greyer and climate-insecure areas, and which includes feedback loops of accelerated greening and exclusive investments. We conclude with future policy directions to address these green inequalities. [ABSTRACT FROM AUTHOR]

Adapting urban spaces to the impacts of climate change is one of today's key challenges, especially when it comes to avoiding the associated social trade-offs which are often overlooked in planning and policy regulation. Based on a review of existing policy and legal documents from Vienna, we analyse how mitigation of green gentrification is already included in Viennese urban planning and policy, and how the administration tries to manage it strategically. Results show that while risks are generally limited, current policy and planning strategies show no awareness of the emerging risks of green gentrification as unintended consequences. [ABSTRACT FROM AUTHOR]

In Baltimore, Maryland, more than 55,000 homes—roughly 30 percent of all residential plots—are subject to ground rent, a legacy of British feudal property law. Under this landlord–tenant system, the homeowner makes payments to the ground leaseholder, who maintains rights to the land. During the early 2000s, many Baltimoreans fell behind on their ground rent due to recessionary headwinds and were "ejected" from their homes as leaseholders took ownership (as collateral). Maryland lawmakers responded by passing housing protections in 2007, but several laws were overturned by the courts (Corma 2017). Using census and ground rent administrative data, we map the geography of ground rent in Baltimore. Our results reveal that originally a tool of class dispossession, ground rent became racialized in the 1950s and 1960s and today overwhelmingly affects Black communities and low-income households. Drawing on work by critical Marxist geographers, work on the production of decline, anti-Blackness, and property relations theory, we rely on a critical quantitative framework to illustrate how people, place, power structures, and relationality produce the pernicious and predatory "ground rent machine." Telling the story of ground rent—a largely underexplored topic—illustrates how local racialized property regimes shape the geography of urban segregation and urban inequality. [ABSTRACT FROM AUTHOR]

A rapidly expanding body of research has sought to connect the Home Owners' Loan Corporation's (HOLC) so-called redlining maps to a wide array of present-day social injustices. The assertion is that these maps helped entrench emerging cogeographies of racial segregation and devaluation that have continued to reproduce racial-spatial inequities through time. We argue that such arguments likely underestimate the ongoing power of racism by narrowly focusing on the map grades rather than on racial segregation itself. To investigate this possibility, we conduct a set of statistical analyses that decouple race from redlining. These analyses produce two main findings. First, postwar Black population growth did not occur in all HOLC redlined neighborhoods evenly but was most concentrated in those areas that either had an initial Black population or that were adjacent to them. Second, whereas HOLC grade was a stronger predictor of neighborhood home values than Black population share until about 1970, the latter has become the more salient factor since. Thus, rather than obliquely highlighting the persistent geographies of racialized devaluation by way of the HOLC grades, researchers should instead focus on the racially uneven geographies of value directly. [ABSTRACT FROM AUTHOR]

Pulsating airflow-driven gas-solid fluidization is an effective method to segregate particles of different densities. The current article presents an elaborate computational study on the development of simulation methodology, and parametric trend identification of pulsating airflow-driven granular segregation for the first time using computational fluid dynamics (CFD), discrete element modeling (DEM) coupled analysis. The rigorous validation of the computational prediction has been produced against the experimental result reported by Li et al. (2021) and an excellent agreement has been observed. Segregation behavior for different density ratios of particles, different patterns of pulsation, and different particle shapes is presented in the current article. The segregation index improves with the density ratio of the binary mixture of particles, but the rate of increment of the segregation index is highly dependent on the airflow rate. Near the optimal value of airflow rate, the rate of increment of the segregation index reduces with the density ratio. Keeping the bed height and material property constant, different patterns of pulsation namely—sinusoidal, triangular, and exponential have been adopted. The segregation index is higher for sinusoidal patterns, whereas it reduces when the pattern is changed to triangular and exponential. Particles of constant volume with different shapes are also considered to understand the effect of particle shape on segregation. The segregation index deteriorates with the increasing surface area of the particle at constant volume. [ABSTRACT FROM AUTHOR]

The aim of this study was to analyse the role that Educational Psychologists (EPs) could play within the framework of the right to inclusive education and the barriers they perceive at different levels of the education system. A reflexive Thematic Analysis study was conducted in Madrid (Spain), which gathered the opinions of 177 professionals working in Counselling Teams. These are multidisciplinary teams in which EPs work alongside other professionals such as social workers and support teachers, in the stages of early childhood and primary education. The data were collected through 21 focus groups. The findings highlight two issues. On the one hand, EPs identified the existence of systemic barriers to advancing towards a more inclusive education, both within and beyond schools, that determine the activities they do in their daily lives. On the other hand, these professionals express their desire to perform other functions, beyond the assessment activities to which they dedicate most of their time, consistent with the international objective of ensuring quality, inclusive, and equitable education for all. These findings are discussed, as well as the gap between accumulated knowledge and the exclusionary practices that continue to occur in everyday reality. [ABSTRACT FROM AUTHOR]

The effects of Sc, Mg and Si elements in an Al-Cu alloy have been studied by means of hardness tests and transmission electron microscopy analysis. The experimental results show that additions of Sc, Mg and Si can improve the heat resistance of the Al-Cu alloy. The Sc/Mg/Si segregation-sandwiched structure is the most stable, when compared with Sc segregation or Si/Sc co-segregation at the interface of θ′/Al. The additions of Si and Mg promote the aging–hardening response of the Al-Cu alloy. Mg is a micro-alloying element with great potential in stabilizing the size of θ′ phases, which further promotes the number density greatly. Consequently, the Al-Cu alloy achieves a high strength, matched with excellent thermal stability, due to the microalloying of Sc/Mg/Si solutes. [ABSTRACT FROM AUTHOR]

An experimental investigation has been conducted with respect to the element segregation and microstructure evolution of a Mn–Cr–Mo alloyed oil casing steel from different solidification cooling rates (0.5 °C/s, 3 °C/s and 10 °C/s) and subsequent defined homogenization treatment using the confocal scanning laser microscope (CSLM). A quantitative relation between the secondary dendrite arm spacing and cooling rates is achieved through regression analysis. The experimental results shown that the micro-segregation area of Mn, Cr and Mo elements decreased significantly, but its concentration increased in the finer inter-dendritic region with the increase of solidification cooling rate. The distribution of the experimental elements determined by the grid point measurements (obtained with EPMA-WDS) processed by the weighted interval rank sort method is consistent with the modified V–B segregation model considering the proper partition coefficient by the mass balance analysis method. Moreover, the residual element segregation index apparently decreased and the element micro-segregation was effectively eliminated during the subsequent homogenization treatment especially for the sample prepared by a higher cooling rate in the as-cast period. [ABSTRACT FROM AUTHOR]

Unified enrollment (UE) systems were designed to improve efficiency, equity, and transparency in school choice processes, but research has focused on efficiency gains. This study examines whether moving from decentralized enrollment processes to UE mitigates or exacerbates racial segregation that often occurs in choice systems. Specifically, we examine a subset of charter schools in New Orleans that had enrolled disproportionately high numbers of White students prior to entering UE. We find that UE entry was associated with increased enrollment of non-White students in these schools without offsetting declines in White enrollment, facilitated by schools also increasing total enrollment after entering UE. We find no meaningful impacts of UE on school accountability measures, student or teacher mobility, or student discipline. [ABSTRACT FROM AUTHOR]

India houses the third biggest Muslim population in the world but over the years it has experienced massive segregation of people based on their religious identities. This large-scale forced and systemic 'ghettoization' of Muslims is a recent trend largely ascribed to the frequent communal' violence and state's negligence towards minorities. In this backdrop, the paper discusses the communal ghettoization of Muslims and uses the Juhapura area of Ahmedabad as illustration to explain the same. This study is essentially based on field observations and literature to comprehend communal tone of ghettoization process. Muslims in India are a minority (15 percent of total population) and suffer most in case riots occur. In the last few decades, following the 1985, 1992 and 2002 riots, Gujarat emerged as a hotbed of communal tension, forcing the Muslim population to migrate from their original locations and seek refuge in other parts of the state. Residents of these newly populated ghettos such as Juhapura are forced to endure these conditions due to fear, lack of choice and state apathy. These localities are largely ignored and lack all forms of socio-economic and physical infrastructure for a decent living. [ABSTRACT FROM AUTHOR]

PURPOSE: Disparities in breast cancer survival remain a challenge. We aimed to analyze the effect of structural racism, as measured by the Index of Concentration at the Extremes (ICE), on receipt of National Cancer Center Network (NCCN) guideline-concordant breast cancer treatment. Methods: We identified patients treated at two institutions from 2005 to 2017 with stage I-IV breast cancer. Census tracts served as neighborhood proxies. Using 5-year estimates from the American Community Survey, 5 ICE variables were computed to create 5 models, controlling for economic segregation, non-Hispanic Black (NHB) segregation, NHB/economic segregation, Hispanic segregation, and Hispanic/economic segregation. Multi-level logistic regression models were used to determine the association between individual and neighborhood-level characteristics on receipt of NCCN guideline-concordant breast cancer treatment. Results: 5173 patients were included: 55.2% were Hispanic, 27.5% were NHW, and 17.3% were NHB. Regardless of economic or residential segregation, a NHB patient was less likely to receive appropriate treatment [(OR)Model1 0.58 (0.45–0.74); ORModel2 0.59 (0.46–0.78); ORModel3 0.62 (0.47–0.81); ORModel4 0.53 (0.40–0.69); ORModel5 0.59(0.46–0.76); p < 0.05]. Conclusion: To our knowledge, this is the first analysis assessing receipt of NCCN guideline-concordant treatment by ICE, a validated measure for structural racism. While much literature emphasizes neighborhood-level barriers to treatment, our results demonstrate that compared to NHW patients, NHB patients are less likely to receive NCCN guideline-concordant breast cancer treatment, independent of economic or residential segregation. Our study suggests that there are potential unaccounted individual or neighborhood barriers to receipt of appropriate care that go beyond economic or residential segregation. [ABSTRACT FROM AUTHOR]

Dhaka's rapid urbanization, income inequality and unplanned growth have brought this megacity to international attention. Although limited elements of ethnoreligious segregation are prevalent in the city, a general concern in the existing literature is that the city is failing to provide distributive justice to its citizens. This paper explores the current socio-spatial division of Dhaka city to understand its patterns and underlying causes. The paper uses the isolation index ($$x{P_x}$$ x P x ), Moran's I (I) index and location quotient (LQ) to understand the pattern of segregation in Dhaka. At the same time, the local indicators for spatial association (LISA) contribute to recognizing clustering patterns in this city. In the context of limited national census data on urban services, this study triangulates its findings through geospatial analysis of existing census data, interviews, and field observations. Results suggest that the eastern part of the city is segregated because of poor urban service conditions. Small clusters of affluent neighborhoods are emerging in Dhaka, whereas enclaves of isolated neighborhoods with inadequate housing and service situations are evident at the city core. Limited housing supply, geographic constraints, elitist planning, the concentration of investment in the city core, budgetary limitations, and management failure have resulted in the isolation and clustering of neighborhoods with poor living conditions. In its conclusion, the paper cautions that segregation requires more policy focus and calls for policy interventions to address the underlying causes of segregation in Dhaka. [ABSTRACT FROM AUTHOR]

In recent years, Sn-Bi solder has been widely used in the electronic packaging industry due to its low melting point. However, the segregation and coarsening of Bi will degrade the mechanical properties of solder joints. In this paper, the shear strength of Sn-Bi/(111)Cu joints is enhanced by refining the distribution of Bi in the composite solder. Bi diffuses in the Sn-Sn58Bi layered composite structure in the reflow process, resulting in inhibition of coarsening. In addition, the growth behavior and orientation of Cu6Sn5 in Sn58Bi/(111)Cu and Sn-Sn58Bi/(111)Cu solder joints are also investigated. [ABSTRACT FROM AUTHOR]

A phase-field model for the precipitation of Fe-Cr-Al alloy is established incorporating grain boundary (GB) effects and irradiation-accelerated diffusion. The radiation source and grain boundary effect are incorporated to broaden the applicability of the Fe-Cr-Al precipitated phase-field model. The model is firstly employed to simulate the precipitation of the Cr-rich α' phase in a single-crystal alloy. The precipitation rate and the size distribution of the precipitated phase were analyzed. Subsequently, the model is utilized to simulate segregation at GBs in a double-crystal system, analyzing the enrichment of Cr and depletion of Al near these boundaries. The simulation results are consistent with experimental observations reported in the references. Finally, the model is applied to simulate the precipitation in a polycrystalline Fe-Cr-Al system. The simulated results revealed that the presence of GBs induces the formation of localized regions with enhanced Cr and Al content as well as depleted zones adjacent to these boundaries. GBs also diminish both the quantity and precipitation rate of the formed phase within the grains. [ABSTRACT FROM AUTHOR]

The United Nations has called upon Governments that are signatory to the Convention on the Rights of Persons with Disabilities (CRPD) to adopt practical but progressive systems to transfer resources from segregated settings/special schools into mainstream schools. What will this mean for Australia's special schools, particularly given their significant rise in enrolments over the past decade? What will it mean for the education of Australian students with disability? In this paper, we examine recent Government reviews/inquiries into the education of Australian students with disability to determine whether future planned actions align with Australia's international obligations to move away from segregated schooling. We conclude by examining both the barriers and the potential for providing a high-quality education system that realises the UN's commitment towards inclusive schools and societies. [ABSTRACT FROM AUTHOR]

The Re-membering Blackness Digital Archive at the University of Scranton shares the university's racial story as part of a campus-wide initiative devoted to reconciliation and collective memory. By bringing together archival records on Black history in a thematic digital collection, the project presents a corrective lens through which the university community transformed its understanding of the historical Black experience on campus and considered how this history reverberates in the present. The initiative contributes to a growing collection of institutional research projects on African American history and the legacies of slavery and racism in higher education. This article considers the metaphor of archives as memory within critical archival literature, and it examines the relationship between archives and collective memory in the context of the University of Scranton's initiative to recover Black memory. [ABSTRACT FROM AUTHOR]

The last two decades have witnessed significant progress in the development of severe plastic deformation techniques to produce ultrafine-grained materials with new and superior properties. This review examines works and achievements related to the low-temperature superplasticity of ultrafine-grained aluminum alloys. The examples are provided of the possibility to observe low-temperature superplasticity in aluminum alloys at temperatures less than 0.5 Tmelt and even at room temperature, and herein, we demonstrate the cases of achieving high ductility and high strength in aluminum alloys from processing utilizing severe plastic deformation. Special emphasis is placed on recent studies of the formation of segregations of alloying elements at grain boundaries in UFG Al alloys and their influence on the development of grain boundary sliding and manifestation of low-temperature superplasticity. In addition, the current status and innovative potential of low-temperature superplasticity in aluminum alloys are observed. [ABSTRACT FROM AUTHOR]

We re-consider Schelling's (1971) bounded neighborhood model as put into the form of a dynamical system by Haw and Hogan (2018). The aim is to determine how tolerance can prevent (or lead to) segregation. In the case of a single neighborhood, we explain the occurring bifurcation set, thereby correcting a scaling error. In the case of two neighborhoods, we correct a major error and derive a dynamical system that does satisfy the modeling assumptions made by Haw and Hogan (2020), staying as close as possible to their construction. We find that stable integration is then only possible if the populations in the two neighborhoods have the option to be in neither neighborhood. In the absence of direct movement between the neighborhoods, the problem is furthermore equivalent to independent single neighborhood problems. [ABSTRACT FROM AUTHOR]

This document is a review of three books that examine the relationship between race and suburban life in America. The first book, "The Changs Next Door to the Diazes" by Wendy Cheng, focuses on the experiences of diverse residents in California's West San Gabriel Valley, challenging the dominance of whiteness in suburban narratives. The second book, "Citizen Brown" by Colin Gordon, explores the struggles of African Americans for citizenship and equality in St. Louis, particularly in relation to segregation and policing. The third book, "Race and the Suburbs in American Film" edited by Merrill Schleier, delves into the role of race in the construction and representation of suburban neighborhoods through film. These books offer valuable insights into the complexities of race in suburban America. The text also discusses the issue of racial segregation in St. Louis, examining its impact on housing, education, and the justice system. It explores the historical factors that have contributed to segregation, such as zoning policies, white flight, and urban renewal projects. Additionally, the text explores how these issues are reflected in American films, particularly those set in suburban areas, and how cinema can both perpetuate and challenge racial exclusion. The authors argue that understanding the connections between race, suburbia, and neoliberalism is crucial for addressing and dismantling systemic racism. [Extracted from the article]

Suburbs across the US are experiencing demographic shifts with consequences for suburban schools. While scholars have expressed concern about rising segregation among suburban public schools, we extend this work by examining changes in racial/ethnic school segregation across a typology of suburban municipalities in the Chicago-Naperville-Elgin metropolitan area between 2007 and 2018. Our findings are mixed- contingent on the measure of segregation employed. We find that Black-white and Hispanic-white segregation in mature suburbs is rising, but is at least in part driven by shifting demographics. The results suggest intra-suburban variation in segregation, highlighting the connection between race and neighborhood change. [ABSTRACT FROM AUTHOR]

This study investigates the significance of sexuality education for individuals with disabilities in Taiwan. It highlights the importance of understanding sexuality as a fundamental aspect of identity, encompassing intimate relationships and connection to others. Since the implementation of the Gender Equity Education Act in 2004, Taiwan has made efforts to include comprehensive sexuality education in the school curriculum and integrate disabled students into mainstream education. However, disabled individuals still face barriers due to ableism and heteronormativity, which impede their access to sexual and reproductive health services, including sexuality education. To address this issue, we conducted a qualitative investigation using narrative and policy data, drawing on Scott's phenomenology of nothingness and crip theory to explore the intersection of sexualities and disabilities in educational contexts. Our findings reveal that individuals with disabilities in Taiwan often rely on pornography and other erotic materials as informal sources of sex education. Hand Angels, a volunteer-based group established in 2013, has been actively promoting sexual rights within disability rights organisations, advocating for a comprehensive, sex-positive, pleasure-focused, and rights-based approach to sexuality education. However, there are still gaps in knowledge production and policy implementation, which systematically deny people with disabilities their right to sexual agency. [ABSTRACT FROM AUTHOR]

Studying the Sorgenfri urban renewal project in the Swedish city of Malmö, this article suggests that a shift in planning documents reflects a new understanding of segregation containing traces of arguments from theoretical debates in geography. This new understanding of segregation appears informed by geographic debates on encounters, mobility, and boundaries, and implies that segregation is best addressed by planners in public space "between" housing areas to create more "meetings" between "strangers". While planning focused on segregation in a more granular way, it also ignored racialised inequality's structural preconditions in ways that perfectly match the neoliberal premises of municipal planning. Thus, translating spatial theory into planning practice can be seen as a strategically selective work shaped by local political conditions. This means that geographers' work might have unexpected and undesired effects even when it has "impact" in policy practice, and that geographers would do well to face this challenge equally strategically. [ABSTRACT FROM AUTHOR]

Black men are disproportionately affected by firearm assaults in the United States, and these disparities are rooted in structural and social inequities. The objective of this scoping review of research was to identify risk and protective factors for firearm assault injuries among Black men at all levels of the social-ecological framework. The search was conducted in 2021. The initial search generated 1,122 articles. Studies were eligible if they (a) included an analysis of modifiable risk or protective factors for firearm assaults among Black men; (b) reported an estimate of correlation, association, or effect between risk or protective factors and firearm assault injuries, firearm violence, and/or firearm homicides; and (c) were published peer-reviewed articles. In all, 19 articles were identified for review. Risk factors identified at each ecological level include the following: (1) Individual: firearm possession/weapon use and criminal legal system interaction; (2) Relationships: gang membership and exposure to other people who have experienced a firearm assault; (3) Community: indicators for socioeconomic status and racial residential segregation; and (4) Societal: historical racist policy. Individual-level substance use had mixed results. Few (26%) studies examined protective factors at any ecological level, but community-level factors like neighborhood tree cover were identified. Future research needs to examine risk and protective factors at the societal level and multiple ecological levels simultaneously leading to more effective multi-level interventions that will guide policy formation. A greater diversity of study designs, research methods, and theoretical frameworks is needed to better understand factors associated with firearm assault among Black men. [ABSTRACT FROM AUTHOR]

Methanol synthesis from CO2 can be made in the presence of a sorbent to increase the achievable yield. If the fresh sorbent is continuously fed to a fluidized bed and separated from the catalyst bed by segregation, a steady-state operation can be achieved. The objective of the present work is to provide insight on the suitable operating conditions for such a fluidized bed reactor system. For this, a conventional CuO/ZnO/Al2O3 was selected as the catalyst, and the SiOLITE® zeolite was selected as the sorbent. Different particle sizes were used to be tested in various proportions to perform the fluidized bed segregation study. The fluid dynamics and segregation of the catalyst–sorbent binary mixtures were the most critical points in the development of this proof of concept. A good bed segregation with a mixing index of 0.31 was achieved. This fact favors the correct operation of the system with the continuous addition of adsorbent, which had hardly any catalyst losses during the tests carried out, achieving a loss of 0.005 g/min under optimal conditions. Continuous feeding and removal of sorbent with a low loss of catalyst was observed. Reactor simulations with MATLAB provided promising results, indicating that the addition of sorbent considerably improves the methanol yield under some operating conditions. This makes it more viable for industrial scaling, since it allows us to considerably reduce the pressure used in the methanol synthesis process or to increase the yield per step, reducing the recirculation of unconverted reactants. [ABSTRACT FROM AUTHOR]

Air entraining concrete with superabsorbent Polymers (SAP) – Part 1: fresh concrete properties Superabsorbent polymers (SAP) have the ability to absorb many times their own dry weight in aqueous solution. In the literature, thus the usage of SAP for (internal) concrete curing has been described. SAP store water in fresh concrete and release it again during hydration. As a result of the water release, the polymers shrink and corresponding macropores remain in the microstructure. SAP thus offer the chance to be used as an alternative to classical air‐void entraining agents for increasing the frost‐ and freeze‐thaw resistance of concretes. The paper at hand describes and discusses systematic investigations on the application of superabsorbent polymers in air‐entrained concrete as an alternative to classical air‐entraining agents. In Part 1 of the article, the results of the experimental investigations regarding the fresh concrete properties are presented. The focus hereby was laid on studying the resulting changes in the rheological properties and the tendency to segregation (sedimentation of the coarse aggregate and bleeding tendency) of the fresh concrete when superabsorbent polymers are employed. Further parts describe the hardened concrete properties (Part 2) and the robustness against practical material and environmental fluctuations (Part 3) of concretes with SAP. [ABSTRACT FROM AUTHOR]