A descriptive and evaluative bibliography of mathematics filmstrips.

Submitted by A.W. Clark and R.W. Allen for the degree of Master of Arts and by C.H. Gardner and R.F. Sweeney for the degree of Master of Education. Thesis (Ed.M.)--Boston UniversityThe purpose of this paper is to present in one volume (1) a bibliography of all mathematics filmstrips from those suitable for the first grade to those suitable for use in senior high school and college, (2) an accurate description of each filmstrip, and (3) unbiased evaluations of each filmstrip by qualified teachers invited to take part in the project. Concomitant problems. The foregoing three parts were the heart of the problem and the portion nearly completely solved. There were, however, concomitant problems which have been partially solved by this work. The first of these concerns the limited use of filmstrips by mathematics teachers. Undoubtedly many do not believe in using filmstrips in mathematics classes. Others have never given serious thought about the advisability of using filmstrips. In later sections of this chapter and throughout this work evidence is cited to support the contention that filmstrips should have serious consideration, and that they are useful in mathematics classes. The second concomitant problem concerns the revision of current filmstrips and production of new ones. The filmstrip producers were supplied, upon their request, with summaries of the evaluations. Summaries were supplied only at the producer's request; for unless they were interested enough to request the summaries, they probably would not be interested in changing or improving their filmstrips. Summary. The problem, then, had three major parts: listing , describing, and evaluating mathematics filmstrips, and two concomitant parts: arousing the mathematics teacher's interest in filmstrips, and encouraging producers to make better productions and necessary revisions in current productions. [TRUNCATED

Mosquito detection with low-cost smartphones: data acquisition for malaria research

Mosquitoes are a major vector for malaria, causing hundreds of thousands of deaths in the developing world each year. Not only is the prevention of mosquito bites of paramount importance to the reduction of malaria transmission cases, but understanding in more forensic detail the interplay between malaria, mosquito vectors, vegetation, standing water and human populations is crucial to the deployment of more effective interventions. Typically the presence and detection of malaria-vectoring mosquitoes is only quantified by hand-operated insect traps or signified by the diagnosis of malaria. If we are to gather timely, large-scale data to improve this situation, we need to automate the process of mosquito detection and classification as much as possible. In this paper, we present a candidate mobile sensing system that acts as both a portable early warning device and an automatic acoustic data acquisition pipeline to help fuel scientific inquiry and policy. The machine learning algorithm that powers the mobile system achieves excellent off-line multi-species detection performance while remaining computationally efficient. Further, we have conducted preliminary live mosquito detection tests using low-cost mobile phones and achieved promising results. The deployment of this system for field usage in Southeast Asia and Africa is planned in the near future. In order to accelerate processing of field recordings and labelling of collected data, we employ a citizen science platform in conjunction with automated methods, the former implemented using the Zooniverse platform, allowing crowdsourcing on a grand scale.Comment: Presented at NIPS 2017 Workshop on Machine Learning for the Developing Worl

A comparison of crushing machines

Much has been written on the comparative efficiency of the various sorts of crushing machines used in the art of Ore Dressing, but it must be confessed that the subject has by no means been reduced to one of the exact sciences as yet. This is rather a sad condition of affairs, for as is of course apparent to the most casual observer, the whole fabric of ore dressing rests and depends to a large degree on the efficiency and economy of the crushing machinery. Inefficient crushing means high costs, irrespective of the thoroughness and cheapness with which the ensuing operations are carried out. Numerous and varied experiments have been carried out for the purpose of determining some means of comparing the work done by the various types of crushers, and Richards, in his admirable Text Book of Ore Dressing, gives the results of personal investigations on the subject. Of the multifarious and ingenious formulae and theories advanced, only two have stood the test, those of Stadtler and of Rittinger. While neither of these two is scientifically exact, involving as the do, an empirical coefficient, yet they are the best we have at present. The following investigations were conducted with a view of determining the comparative vale and usefulness of the two methods, and while the work is far from being conclusive, yet there are points which will well repay consideration --Introduction, Page 1

Childhood traumatic infarction causing left ventricular aneurysm: Diagnosis by two-dimensional echocardiography

After being struck by an automobile, a 9 year old boy developed transient right bundle branch block followed by electrocardiographic changes of inferior wall myocardial infarction and an increase of serum cardiac enzymes. Two-dimensional echocardiography demonstrated a prominent septal aneurysm. Subsequent cardiac catheterization confirmed septal aneurysm and demon- strated an additional inferior aneurysm. Six weeks after the accident, resection of the inferior aneurysm was performed. At 1 year follow-up study, residual septal aneurysm and cardiomegaly are present, but the boy is asymptomatic

THE ASSOCIATIONS AMONG RACIAL DISCRIMINATION, RACIAL IDENTITY, AND OBSESSIVE-COMPULSIVE SYMPTOMS

No study to date has explored the link between racial discrimination (RD) and obsessive-compulsive (OC) symptoms within a sample of African American young adults. Furthermore, no studies have investigated the role of racial identity in protecting young adults against the effects of racial discrimination on OC symptom development and maintenance. This study examined the association between RD and changes in OC symptoms, as well as how racial identity moderates this relationship. Participants were 171 African American college students who completed measures of RD, racial identity, and OC symptom distress. Latent profile analysis revealed three patterns of RI: Black Optimist, Race-Focused, and Humanist. RD frequency at Time 1 was positively associated with OC symptom distress approximately one year later for the Race-Focused racial identity group, but unrelated to OC symptom distress for the Black Optimist and Humanist groups.Master of Art

Justice (Vol. 47, Iss. 15)

191

DEVELOPING CULTURALLY-ADAPTED MOBILE MENTAL HEALTH INTERVENTIONS: A MULTI-STUDY, MIXED METHODS APPROACH

African American young adults are less likely to have access to evidence-based treatments for mental health symptoms, yet mobile-Health (mHealth) interventions may increase access to evidence-based treatment options. For mHealth interventions to be effective, it is important that they are culturally-adapted to address the unique sociocultural risk and protective factors that may impact psychological well-being for this group (i.e., online racial discrimination and racial identity beliefs, respectively). This dissertation will explore a variety of questions over three studies that will lay the foundation for the development of culturally-adapted mHealth interventions for mental health for African American young adults. In the first study, this dissertation explores how experiences of online racial discrimination and racial identity beliefs together are associated with psychological distress within a sample of African American young adults. In the second study, the dissertation examines changes in racial identity and psychological distress in a sample of African American college students using five waves of data collected over three years. Finally, in study 3, the dissertation utilizes focus groups of African American young adults to inform the development and design of culturally-adapted mHealth applications. Together, the current dissertation has the potential to produce an increased understanding of how unique sociocultural risk and protective factors (i.e., online racial discrimination and racial identity development, respectively) affect the psychological well-being of African American young adults and puts forth recommendations for addressing these factors in culturally-adapted mHealth technologies.Doctor of Philosoph