670 research outputs found
Emotionally Focused Therapy for Couples: A Treatment for Depression and Anxiety
This systematic review aimed to examine emotionally focused therapy (EFT) and its effectiveness as a treatment for couples suffering from symptoms of depression and anxiety. Inclusion and exclusion criteria were created and databases were searched for relevant literature. Five articles were used as data for this study. Based on the findings, five areas of focus were uncovered that support the claim that EFT may be an effective treatment for couples suffering from symptoms of depression and anxiety. More research must be done in order to assert this claim of effectiveness. Practitioners, clients, and researchers would benefit from further research in this area of EFT and its effectiveness in treating depression and anxiety symptoms among couples
Drosophila blastoderm patterning
The Drosophila blastoderm embryo is a classic model for the study of the genetics of pattern formation. In recent years, quantitative empirical approaches have been employed extensively in the study of blastoderm pattern formation. This quantitative work has enabled the development of a number of data-driven computational models. More than in other systems, these models have been experimentally validated, and have informed new empirical work. They have led to insights into the establishment of morphogen gradients, the interpretation and transduction of positional information by downstream transcriptional networks, and the mechanisms by which spatial scaling and robustness of gene expression are achieved. Here we review the latest developments in the field
An open secret: Hiring of undocumented workers at Agriprocessors was no surprise
https://scholarworks.uni.edu/postville_documents/1315/thumbnail.jp
Huge immigration raids a thing of the past
https://scholarworks.uni.edu/postville_documents/1319/thumbnail.jp
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Evolution of biological cooperation: An algorithmic approach
This manuscript presents an algorithmic approach to cooperation in biological systems, drawing on fundamental ideas from statistical mechanics and probability theory. Fisher’s geometric model of adaptation suggests that the evolution of organisms well adapted to multiple constraints comes at a significant complexity cost. By utilizing combinatorial models of fitness, we demonstrate that the probability of adapting to all constraints decreases exponentially with the number of constraints, thereby generalizing Fisher’s result. Our main focus is understanding how cooperation can overcome this adaptivity barrier. Through these combinatorial models, we demonstrate that when an organism needs to adapt to a multitude of environmental variables, division of labor emerges as the only viable evolutionary strategy
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Modeling of Gap Gene Expression in <i>Drosophila Kruppel</i> Mutants
The segmentation gene network in Drosophila embryo solves the fundamental problem of embryonic patterning: how to establish a periodic pattern of gene expression, which determines both the positions and the identities of body segments. The gap gene network constitutes the first zygotic regulatory tier in this process. Here we have applied the systems-level approach to investigate the regulatory effect of gap gene Kruppel (Kr) on segmentation gene expression. We acquired a large dataset on the expression of gap genes in Kr null mutants and demonstrated that the expression levels of these genes are significantly reduced in the second half of cycle 14A. To explain this novel biological result we applied the gene circuit method which extracts regulatory information from spatial gene expression data. Previous attempts to use this formalism to correctly and quantitatively reproduce gap gene expression in mutants for a trunk gap gene failed, therefore here we constructed a revised model and showed that it correctly reproduces the expression patterns of gap genes in Kr null mutants. We found that the remarkable alteration of gap gene expression patterns in Kr mutants can be explained by the dynamic decrease of activating effect of Cad on a target gene and exclusion of Kr gene from the complex network of gap gene interactions, that makes it possible for other interactions, in particular, between hb and gt, to come into effect. The successful modeling of the quantitative aspects of gap gene expression in mutant for the trunk gap gene Kr is a significant achievement of this work. This result also clearly indicates that the oversimplified representation of transcriptional regulation in the previous models is one of the reasons for unsuccessful attempts of mutant simulations.</p
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