Siblingship in Afro-Caribbean Kinship: The Garifuna of Belize

This dissertation examines siblingship in the Garifuna village of Hopkins, an Afro-Amerindian community in southern Belize. It is based on intensive interviews with individual informants and comprehensive genealogical and demographic data that I collected during fieldwork there in 1987-89. In this study, I describe variations of Garifuna siblingship and changes in siblingship over time. I consider relationships between individual siblings and investigate sibling groups acting in solidarity or disunion towards other Garifuna social units and the outside world. I evaluate sibling interdependencies from childhood to old age in ordinary affairs and at times of crisis. In addition to looking at differences between full-siblings and half-siblings, I also examine how more distant kinship ties and affairs between unrelated persons are sometimes expressed in an idiom of fictive siblingship. Garifuna siblingship is analyzed in terms of gender roles, economic status, and property ownership and in relationship to parenting, godparenting, marriage, inheritance, emigration, employment, child fosterage, personal kindreds, social networks, and household composition. Through examination of siblingship in patterns of emotional and economic support, domestic and political authority, affective bonding, child rearing, food sharing, and job seeking, I elucidate the factors that activate and strengthen or weaken such relationships. Garifuna siblingship is a cultural-symbolic ideal as well as a behavioral practice, and this study assesses the relationship of cultural values to actual behavior. Siblingship ideals are related to broader Garifuna ideals about egalitarianism and individualism and to non-Garifuna cultural influences from outside the community such as churches, schools, and government agencies

The bricks in action : women\u27s public housing activism in Louisville, Kentucky, 1958-1970.

This thesis is a historical examination of women\u27s public housing activism in Louisville, Kentucky from 1958 to 1970. With the proclamation of the War on Poverty by President Lyndon B. Johnson in 1964, poverty stricken neighborhoods were provided with federal funding to initiate community action by public housing residents. This thesis illustrates how women living in Louisville\u27s public housing communities organized grassroots community action groups and eventually utilized federal funds from the War on Poverty to initiate social change. Louisville activists organized by means of coalition building, increased education, and coordinated protests. Grassroots organizing in Louisville led to an established political presence of women led neighborhood groups, and improved health and safety conditions for residents of the housing projects

A study of books included in the state of New Jersey\u27s holocaust and genocide 5-8th grade curriculum

The purpose of this study was to evaluate the books suggested by the State of New Jersey Holocaust and Genocide Curriculum. To Honor All Children for Grades 5-8 in order to create a diverse curriculum. Through the use of suggested materials by New Jersey, it is intended that students be exposed to a well rounded and balanced educational experience. In order for this for this curriculum to be diverse, it needs include many ethnic racial/ethnic groups and other topics relevant to holocaust and genocide study. The curriculum guide also needs to be updated to include books that have a recent publication date and are still available to purchase. In order to complete this study, spreadsheets were created based on the topics designated by the state of New Jersey. Within the seven topics, the following variables were retrieved from the state\u27s curriculum: type of book, recommended reading level, recommended interest level, state recommended grade level, publication date and race and ethnicity. As a result of this study, the researcher recommends that the curriculum be updated to include books that are not out of print and cover a more diverse range of genocides as well as newer titles to keep students\u27 interested

The cytoplasmic domain of CD4 promotes the development of CD4 lineage T cells.

Thymocytes must bind major histocompatibility complex (MHC) proteins on thymic epithelial cells in order to mature into either CD8+ cytotoxic T cells or CD4+ helper T cells. Thymic precursors express both CD8 and CD4, and it has been suggested that the intracellular signals generated by CD8 or CD4 binding to class I or II MHC, respectively, might influence the fate of uncommitted cells. Here we test the notion that intracellular signaling by CD4 directs the development of thymocytes to a CD4 lineage. A hybrid protein consisting of the CD8 extracellular and transmembrane domains and the cytoplasmic domain of CD4 (CD884) should bind class I MHC but deliver a CD4 intracellular signal. We find that expression of a hybrid CD884 protein in thymocytes of transgenic mice leads to the development of large numbers of class I MHC-specific, CD4 lineage T cells. We discuss these results in terms of current models for CD4 and CD8 lineage commitment

Mice Infected with Low-virulence Strains of Toxoplasma gondii Lose their Innate Aversion to Cat Urine, Even after Extensive Parasite Clearance

Toxoplasma gondii chronic infection in rodent secondary hosts has been reported to lead to a loss of innate, hard-wired fear toward cats, its primary host. However the generality of this response across T. gondii strains and the underlying mechanism for this pathogen mediated behavioral change remain unknown. To begin exploring these questions, we evaluated the effects of infection with two previously uninvestigated isolates from the three major North American clonal lineages of T. gondii, Type III and an attenuated strain of Type I. Using an hour-long open field activity assay optimized for this purpose, we measured mouse aversion toward predator and non-predator urines. We show that loss of innate aversion of cat urine is a general trait caused by infection with any of the three major clonal lineages of parasite. Surprisingly, we found that infection with the attenuated Type I parasite results in sustained loss of aversion at times post infection when neither parasite nor ongoing brain inflammation were detectable. This suggests that T. gondii-mediated interruption of mouse innate aversion toward cat urine may occur during early acute infection in a permanent manner, not requiring persistence of parasitecysts or continuing brain inflammation.Comment: 14 pages, 3 figure

New numerical approaches for modeling thermochemical convection in a compositionally stratified fluid

Seismic imaging of the mantle has revealed large and small scale heterogeneities in the lower mantle; specifically structures known as large low shear velocity provinces (LLSVP) below Africa and the South Pacific. Most interpretations propose that the heterogeneities are compositional in nature, differing in composition from the overlying mantle, an interpretation that would be consistent with chemical geodynamic models. Numerical modeling of persistent compositional interfaces presents challenges, even to state-of-the-art numerical methodology. For example, some numerical algorithms for advecting the compositional interface cannot maintain a sharp compositional boundary as the fluid migrates and distorts with time dependent fingering due to the numerical diffusion that has been added in order to maintain the upper and lower bounds on the composition variable and the stability of the advection method. In this work we present two new algorithms for maintaining a sharper computational boundary than the advection methods that are currently openly available to the computational mantle convection community; namely, a Discontinuous Galerkin method with a Bound Preserving limiter and a Volume-of-Fluid interface tracking algorithm. We compare these two new methods with two approaches commonly used for modeling the advection of two distinct, thermally driven, compositional fields in mantle convection problems; namely, an approach based on a high-order accurate finite element method advection algorithm that employs an artificial viscosity technique to maintain the upper and lower bounds on the composition variable as well as the stability of the advection algorithm and the advection of particles that carry a scalar quantity representing the location of each compositional field. All four of these algorithms are implemented in the open source FEM code ASPECT

Pascalammetry with operando microbattery probes: Sensing high stress in solid-state batteries.

Energy storage science calls for techniques to elucidate ion transport over a range of conditions and scales. We introduce a new technique, pascalammetry, in which stress is applied to a solid-state electrochemical device and induced faradaic current transients are measured and analyzed. Stress-step pascalammetry measurements are performed on operando microbattery probes (Li2O/Li/W) and Si cathodes, revealing stress-assisted Li+ diffusion. We show how non-Cottrellian lithium diffusional kinetics indicates stress, a prelude to battery degradation. An analytical solution to a diffusion/activation equation describes this stress signature, with spatiotemporal characteristics distinct from Cottrell's classic solution for unstressed systems. These findings create an unprecedented opportunity for quantitative detection of stress in solid-state batteries through the current signature. Generally, pascalammetry offers a powerful new approach to study stress-related phenomena in any solid-state electrochemical system

An investigation into the use of physical modelling for the prediction of various feature types visible from different view points

This paper describes a general purpose flexible technique which uses physical modelling techniques for determining the features of a 3D object that are visible from any predefined view. Physical modelling techniques are used to determine which of many different types of features are visible from a complete set of viewpoints. The power of this technique lies in its ability to detect and parameterise object features, regardless of object complexity. Raytracing is used to simulate the physical process by which object features are visible so that surface properties (eg specularity, transparency) as well as object boundaries can be used in the recognition process. Using this technique occluding and non-occluding edge based features are extracted using image processing techniques and then parameterised. Features caused by specularity are also extracted and qualitative descriptions for these are defined

The Ins and Outs of CCR7 in the Thymus

Although it is widely supposed that chemokines play a role in the thymus, most existing evidence is circumstantial. In this issue, two groups provide direct evidence that the chemokine receptor CCR7 is required for normal thymocyte migration (Ueno, T., F. Saito, D. Gray, S. Kuse, K. Hieshima, H. Nakano, T. Kakiuchi, M. Lipp, R. Boyd, and Y. Takahama. 2004. J. Exp. Med. 200:493–505; Misslitz, A., O. Pabst, G. Hintzen, L. Ohl, E. Kremmer, H. T. Petrie, and R. Forster. 2004. J. Exp. Med. 200:481–491). The two papers focus on distinct and opposite migration events, an early outward migration and a later inward migration. Together these papers provide a fascinating picture of the complex role of CCR7 in orchestrating thymocyte migration