65 research outputs found
Evidence for BCR/ABL1âpositive Tâcell acute lymphoblastic leukemia arising in an early lymphoid progenitor cell
BCRâABL1âpositive leukemias have historically been classified as either chronic myelogenous leukemia or Ph+ acute lymphoblastic leukemia. Recent analyses suggest there may be a wider range of subtypes. We report a patient with BCRâABL1 fusion positive Tâcell ALL with a previously undescribed cell distribution of the fusion gene. The examination of sorted cells by fluorescence in situ hybridization showed the BCRâABL1 fusion in the malignant T cells and a subpopulation of the nonmalignant B cells, but not nonmalignant T cells or myeloid or CD34+ progenitor cells providing evidence that the fusion may have occurred in an early lymphoid progenitor
When high similarity copycats lose and moderate similarity copycats gain: The impact of comparative evaluation
Copycats imitate features of leading brands to free ride on their equity. The prevailing belief is that the more similar copycats are to the leader brand, the more positive their evaluation is, and thus the more they free ride. Three studies demonstrate when the reverse holds true: Moderate-similarity copycats are actually evaluated more positively than high-similarity copycats when evaluation takes place comparatively, such as when the leader brand is present rather than absent. The results demonstrate that blatant copycats can be less and subtle copycats can be more perilous than is commonly believed. This finding has implications for marketing theory and practice and trademark law
The MUSIC of Galaxy Clusters I: Baryon properties and Scaling Relations of the thermal Sunyaev-Zel'dovich Effect
We introduce the Marenostrum-MultiDark SImulations of galaxy Clusters (MUSIC)
Dataset, one of the largest sample of hydrodynamically simulated galaxy
clusters with more than 500 clusters and 2000 groups. The objects have been
selected from two large N-body simulations and have been resimulated at high
resolution using SPH together with relevant physical processes (cooling, UV
photoionization, star formation and different feedback processes). We focus on
the analysis of the baryon content (gas and star) of clusters in the MUSIC
dataset both as a function of aperture radius and redshift. The results from
our simulations are compared with the most recent observational estimates of
the gas fraction in galaxy clusters at different overdensity radii. When the
effects of cooling and stellar feedbacks are included, the MUSIC clusters show
a good agreement with the most recent observed gas fractions quoted in the
literature. A clear dependence of the gas fractions with the total cluster mass
is also evident. The impact of the aperture radius choice, when comparing
integrated quantities at different redshifts, is tested: the standard
definition of radius at a fixed overdensity with respect to critical density is
compared with a definition based on the redshift dependent overdensity with
respect to background density. We also present a detailed analysis of the
scaling relations of the thermal SZ (Sunyaev Zel'dovich) Effect derived from
MUSIC clusters. The integrated SZ brightness, Y, is related to the cluster
total mass, M, as well as, the M-Y counterpart, more suitable for observational
applications. Both laws are consistent with predictions from the self-similar
model, showing a very low scatter. The effects of the gas fraction on the Y-M
scaling and the presence of a possible redshift dependence on the Y-M scaling
relation are also explored.Comment: 22 pages, 25 figures, accepted for pubblication by MNRA
Categorization theory and research in consumer psychology: category representation and category-based inference
No abstract available
What Makes It Green? The Role of Centrality of Green Attributes in Evaluations of the Greenness of Products
An increasing body of research addresses consumers' green product purchasing behavior, and yet little work has examined how consumers form perceptions of the greenness of products in the first place. Drawing on theories of attribute centrality (the degree to which an attribute is integral in defining an object), the authors argue that products with identical environmental benefits will be judged more or less green depending on whether the benefit stems from a central versus a peripheral attribute. They present four studies that support the hypotheses and explore factors that influence the effect of central attributes, including product category membership and integration of the green attribute with other elements of the product. They include controls for firm motivations and importance of the attribute to the individual consumer. The authors conclude the article with managerial and public policy implications, such as advice for firms on where to make green investments for maximum consumer impact and insight for public policy makers on the need for consumer assistance in objectively evaluating products with identical environmental benefits that achieve those benefits in different ways
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