Equity,inclusion, and antiblackness in mathematics education

ABSTRACT

Despite decades of equity- and inclusion-oriented discourse and reform in mathematics education, Black learners in the U.S. continue to experience dehumanizing and violent forms of mathematics education. I suggest that equity for Black learners in mathematics education is a delusion rooted in the fictions of white imaginaries, contingent on appeasing white logics and sensitivities, and characterized at best by incremental changes that do little to threaten the maintenance of racial hierarchies inside or outside of mathematics education. Moreover, the forms of inclusion offered up in equity-oriented discourses and reforms represent contexts of containment and enclosure that keep Black people in their same relative position. Refusal is suggested as a strategy for Black learners to resist the anti-Black character of mathematics education, and as a first step in actualizing forms of mathematics education that are worthy of Black learners.     

Wavelet‐Based Testing for Serial Correlation of Unknown Form in Panel Models

Wavelet analysis is a new mathematical method developed as a unified field of science over the last decade or so. As a spatially adaptive analytic tool, wavelets are useful for capturing serial correlation where the spectrum has peaks or kinks, as can arise from persistent dependence, seasonality, and other kinds of periodicity. This paper proposes a new class of generally applicable wavelet‐based tests for serial correlation of unknown form in the estimated residuals of a panel regression model, where error components can be one‐way or two‐way, individual and time effects can be fixed or random, and regressors may contain lagged dependent variables or deterministic/stochastic trending variables. Our tests are applicable to unbalanced heterogenous panel data. They have a convenient null limit N(0,1) distribution. No formulation of an alternative model is required, and our tests are consistent against serial correlation of unknown form even in the presence of substantial inhomogeneity in serial correlation across individuals. This is in contrast to existing serial correlation tests for panel models, which ignore inhomogeneity in serial correlation across individuals by assuming a common alternative, and thus have no power against the alternatives where the average of serial correlations among individuals is close to zero. We propose and justify a data‐driven method to choose the smoothing parameter—the finest scale in wavelet spectral estimation, making the tests completely operational in practice. The data‐driven finest scale automatically converges to zero under the null hypothesis of no serial correlation and diverges to infinity as the sample size increases under the alternative, ensuring the consistency of our tests. Simulation shows that our tests perform well in small and finite samples relative to some existing tests.     

美元的贬值对中国经济的影响

美元持续贬值影响世界经济的发展,中国经济受美元贬值的影响远高于其它国家。影响有利有弊,科学合理的推进人民币汇改、持续扩大中国内需、加快产业结构优化升级能有效防范美元贬值对经济带来的不利影响,有利于实现中国经济又好又快的发展。     

Educator Sexual Abuse: Two Case Reports

Sexual abuse by educators has become an increasingly noted type of sexual abuse, especially among adolescents, for two reasons. First, there is a potential for these cases to be silent and prolonged and second, when disclosed, the forensic implications usually include both criminal and/or civil sanctions. For forensic case evaluations, developmental traumatology, or the intersection of the traumatic event(s) at a particular age of the student, is often the evaluating framework. We report on two forensic cases of a female student and a male student to emphasize the dynamics of adolescent sexual victimization, its impact on adolescent development, and evidence-based practice for symptom identification and treatment.     

Predicting project approvals: A case of grants from the National Science Council of Taiwan

Project selection is an important task for organizations in achieving their missions using limited budgets and resources. Whether or not a project will be approved is also of primary concern to the applicants. This paper predicts whether a project will be approved for cases where the criteria for evaluating it are known while the scoring system is not. The idea is to construct a frontier function for the approved projects from past performance on the criteria. The relative distance between a proposed project and the frontier serves as an indicator of the possibility that the project will be approved. Data from the Management II Division of the National Science Council of Taiwan in the Topic Research Project are collected to illustrate this approach. From the percentile of the distance measure, an applicant is able to predict the possibility that their project will be approved. Since professors with different levels of experience and different research areas have different research performance, these factors are taken into account in the prediction. A Malmquist productivity index analysis is also conducted to investigate the performance improvement of the applicants in research between two periods.     

Competitive Capabilities among Manufacturing Plants in Developing,Emerging, and Industrialized Countries: A Comparative Analysis

Competitive capabilities have been defined as a plant's actual performance relative to its competitors, with the most commonly investigated capabilities being quality, delivery, flexibility, and cost. However, most research in this realm has investigated capabilities within developed countries, and neglected the context of developing and emerging nations, which are increasingly becoming viable economic entities in global supply chains in their own right. The present study fills this gap and carries out a comparative analysis of competitive capabilities among plants in developing, emerging, and industrialized countries. Basing our arguments on the resource‐based view of the firm, we suggest that the influence of competitive capabilities on each other varies among plants in differentially industrialized regions. Specifically, we suggest that, on average, competitive capabilities tend to influence each other to a greater degree in plants in emerging and developing countries compared to industrialized countries. Along similar lines, we suggest that the influence of the four competitive capabilities on performance improvement is manifested more strongly among plants in emerging and developing countries than among plants in industrialized nations. We investigate these contentions with data from 1,211 plants in 21 countries. The results are particularly important for decision makers as they decide on the increasingly global location of their manufacturing operations or the configuration of their global supply chains.     

Place,race and differential occupational opportunities

A large body of literature investigating the link between black percentage in the community and occupational differentiation, has found disparities to be greater in places where blacks are in a higher proportion. The present paper discusses first, theoretical perspectives and methodological techniques employed in past research; second, examines the issue in terms of the relative odds of the races for incumbency in a series of occupational groupings; and third, analyzes the effect of percentage black on race-linked occupational differentiation across 124 major American cities. Using log-linear procedures, blacks, relative to whites, are much more likely to be in unskilled and semiskilled manual occupations, while whites, relative to blacks, are far more likely to be in white-collar and upper-status positions. Moreover, blacks' denial of access to higher-status positions, their channeling to lower-status work, and their ability to overflow into specific intermediate-status occupations are found to be greatly influenced both by percentage black as well as other community characteristics. The findings are discussed in light of sociological theories suggesting that the issue cannot be understood solely by the competition hypothesis. One must also consider the overflow and queuing explanations.     

The place of odds ratios in the study of place,race and differential occupational opportunities

Demography - During the last few decades the study of racial differences in occupational and economic attainment has progressed rapidly, both in terms of theory and research. The ecological study...     

A survey of fertility in specialized households in Tianjin city with one child in the countryside]

This report addresses the trend among specialized households which has evolved from the assumption that more children meant a happier life to the opinion that a smaller number of children will have a better upbringing. It addresses problems in family planning and ways to improve these problems as well. Since the economic reform which drastically changed the economic system in China (especially in rural areas), the ideas of the people regarding family planning began to change just as their lifestyles were changing. When production had been controlled by communes, everybody received the same income and thus, low incentive resulted in low production. Life was difficult and people still retained the traditional notion that a larger family guaranteed happiness as well as security for their old age. Moreover, women were tied to the home and were economically dependent upon their husbands. The new economic reforms have brought about changes in these attitudes. Women now want less children and a higher quality of life. They have bettered their status in society and now have higher incomes. They are encouraged to work more and children are less of a concern. In one case, a woman was kicked out of her own house by her mother-in-law for giving birth to a girl. Later, the woman purchased the house after raising a protest in the village. She has now gained the respect of her mother-in-law who lives in the house and takes care of the child. Old notions, such as those maintaining that low productivity requires more labor and that a larger income will permit a larger family, are now less accepted. Today's trend focuses more on improvements in family planning through better promotional campaigns and aims to enhance productivity through government assistance.     

The topology aware file distribution problem

We present theoretical results for large-file distribution on general networks of known topology (known link bandwidths and router locations). We show that the problem of distributing a file in minimum time is NP-hard in this model, and we give an O(logn) approximation algorithm, where n is the number of workstations that require the file. We also characterize our method as optimal amongst the class of “no-link-sharing” algorithms.