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https://www.readbyqxmd.com/read/29150448/taking-a-goal-centred-dynamic-snapshot-as-a-possibility-for-local-homing-in-initially-na%C3%A3-ve-bumblebees
#1
Anne Lobecke, Roland Kern, Martin Egelhaaf
It is essential for central place foragers, such as bumblebees, to return reliably to their nest. Bumblebees, leaving their inconspicuous nest hole for the first time need to gather and learn sufficient information about their surroundings to allow them to return to their nest at the end of their trip, instead of just flying away to forage. Therefore, we assume an intrinsic learning program that manifests itself in the flight structure immediately after leaving the nest for the first time.In this study, we recorded and analysed the first outbound flight of individually marked naïve bumblebees in an indoor environment...
November 17, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29150140/visual-pathways-from-the-perspective-of-cost-functions-and-multi-task-deep-neural-networks
#2
REVIEW
H Steven Scholte, Max M Losch, Kandan Ramakrishnan, Edward H F de Haan, Sander M Bohte
Vision research has been shaped by the seminal insight that we can understand the higher-tier visual cortex from the perspective of multiple functional pathways with different goals. In this paper, we try to give a computational account of the functional organization of this system by reasoning from the perspective of multi-task deep neural networks. Machine learning has shown that tasks become easier to solve when they are decomposed into subtasks with their own cost function. We hypothesize that the visual system optimizes multiple cost functions of unrelated tasks and this causes the emergence of a ventral pathway dedicated to vision for perception, and a dorsal pathway dedicated to vision for action...
October 7, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/29149774/hippocampal-ca1-activity-correlated-with-the-distance-to-the-goal-and-navigation-performance
#3
Hugo J Spiers, H Freyja Olafsdottir, Colin Lever
Coding the distance to a future goal is an important function of a neural system supporting navigation. While some evidence indicates the hippocampus increases activity with proximity to the goal, others have found activity to decreases with proximity. To explore goal distance coding in the hippocampus we recorded from CA1 hippocampal place cells in rats as they navigated to learned goals in an event arena with a win-stay lose-shift rule. CA1 activity was positively correlated with the distance - decreasing with proximity to the goal...
November 17, 2017: Hippocampus
https://www.readbyqxmd.com/read/29149194/understanding-linkage-to-care-with-hiv-self-test-approach-in-lusaka-zambia-a-mixed-method-approach
#4
Jenala Chipungu, Samuel Bosomprah, Arianna Zanolini, Harsha Thimurthy, Roma Chilengi, Anjali Sharma, Charles B Holmes
INTRODUCTION: HIV self-testing (HIVST) is a novel approach designed to assist in achieving the goal of at least 90% of the population that learn their HIV status. A self-test user with a positive test is required to visit a clinic to link into HIV care, yet little is known about patient preferences for linkage strategies. We examined the intention to link to care amongst potential HIVST users and the suitability of three linkage to care strategies in Lusaka Province, Zambia. METHODS: We conducted a representative cross sectional survey of 1,617 individuals aged 16-49 years old in Lusaka Province...
2017: PloS One
https://www.readbyqxmd.com/read/29147954/a-fully-automatic-end-to-end-method-for-content-based-image-retrieval-of-ct-scans-with-similar-liver-lesion-annotations
#5
A B Spanier, N Caplan, J Sosna, B Acar, L Joskowicz
PURPOSE: The goal of medical content-based image retrieval (M-CBIR) is to assist radiologists in the decision-making process by retrieving medical cases similar to a given image. One of the key interests of radiologists is lesions and their annotations, since the patient treatment depends on the lesion diagnosis. Therefore, a key feature of M-CBIR systems is the retrieval of scans with the most similar lesion annotations. To be of value, M-CBIR systems should be fully automatic to handle large case databases...
November 16, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/29146769/the-interaction-of-path-integration-and-terrestrial-visual-cues-in-navigating-desert-ants-what-can-we-learn-from-path-characteristics
#6
Cornelia Buehlmann, A Sofia D Fernandes, Paul Graham
Ant foragers make use of multiple navigational cues to navigate through the world and the combination of innate navigational strategies and the learning of environmental information is the secret of their navigational success. We present here detailed information about the paths of Cataglyphis fortis desert ants navigating by an innate strategy, namely path integration. Firstly, we observe that the ants' walking speed decreases significantly along their homing paths, such that they slow down just before reaching the goal, and maintain a slower speed during subsequent search paths...
November 16, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/29146667/building-better-bridges-into-stem-a-synthesis-of-25-years-of-literature-on-stem-summer-bridge-programs
#7
Michael Ashley, Katelyn M Cooper, Jacqueline M Cala, Sara E Brownell
Summer bridge programs are designed to help transition students into the college learning environment. Increasingly, bridge programs are being developed in science, technology, engineering, and mathematics (STEM) disciplines because of the rigorous content and lower student persistence in college STEM compared with other disciplines. However, to our knowledge, a comprehensive review of STEM summer bridge programs does not exist. To provide a resource for bridge program developers, we conducted a systematic review of the literature on STEM summer bridge programs...
2017: CBE Life Sciences Education
https://www.readbyqxmd.com/read/29146663/a-vision-and-change-reform-of-introductory-biology-shifts-faculty-perceptions-and-use-of-active-learning
#8
Anna Jo Auerbach, Elisabeth Schussler
Increasing faculty use of active-learning (AL) pedagogies in college classrooms is a persistent challenge in biology education. A large research-intensive university implemented changes to its biology majors' two-course introductory sequence as outlined by the Vision and Change in Undergraduate Biology Education final report. One goal of the curricular reform was to integrate core biological concepts and competencies into the courses using AL pedagogical approaches. The purpose of this study was to observe the instructional practices used by faculty (N = 10) throughout the 3-year process of reform to determine whether the use of AL strategies (including student collaboration) increased, given that it can maximize student learning gains...
2017: CBE Life Sciences Education
https://www.readbyqxmd.com/read/29145871/challenges-to-implementing-gavi-s-health-system-strengthening-support-in-chad-and-cameroon-results-from-a-mixed-methods-evaluation
#9
Emily Dansereau, Yodé Miangotar, Ellen Squires, Honoré Mimche, Charbel El Bcheraoui
BACKGROUND: Since 2005, Gavi has provided health system strengthening (HSS) grants to address bottlenecks affecting immunization services. This study is the first to evaluate the Gavi HSS implementation process in either Cameroon or Chad, two countries with significant health system challenges and poor achievement on the child and maternal health Millennium Development Goals. METHODS: We triangulated quantitative and qualitative data including financial records, document review, field visit questionnaires, and key informant interviews (KII) with representatives from the Ministries of Health, Gavi, and other partners...
November 16, 2017: Globalization and Health
https://www.readbyqxmd.com/read/29145413/diffusion-based-neuromodulation-can-eliminate-catastrophic-forgetting-in-simple-neural-networks
#10
Roby Velez, Jeff Clune
A long-term goal of AI is to produce agents that can learn a diversity of skills throughout their lifetimes and continuously improve those skills via experience. A longstanding obstacle towards that goal is catastrophic forgetting, which is when learning new information erases previously learned information. Catastrophic forgetting occurs in artificial neural networks (ANNs), which have fueled most recent advances in AI. A recent paper proposed that catastrophic forgetting in ANNs can be reduced by promoting modularity, which can limit forgetting by isolating task information to specific clusters of nodes and connections (functional modules)...
2017: PloS One
https://www.readbyqxmd.com/read/29142291/resveratrol-modulates-cocaine-induced-inhibitory-synaptic-plasticity-in-vta-dopamine-neurons-by-inhibiting-phosphodiesterases-pdes
#11
Yan Li, Laikang Yu, Li Zhao, Fanxing Zeng, Qing-Song Liu
Resveratrol is a natural phytoalexin synthesized by plants, including grapes. It displays a wide range of neuroprotective benefits associated with anti-aging. Recent studies have shown that resveratrol regulates dopaminergic transmission and behavioral effects of drugs of abuse. The goal of the present study is to investigate whether and how resveratrol alters basal inhibitory synaptic transmission and cocaine-induced inhibitory synaptic plasticity in dopamine neurons of the ventral tegmental area (VTA). We report that resveratrol elevated cAMP levels by itself and further potentiated a forskolin-induced increase in cAMP levels in midbrain slices, consistent with reported effects of inhibition of phosphodiesterases (PDEs)...
November 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29141818/does-including-the-full-cvlt-ii-and-bvmt-r-improve-bicams-evidence-from-a-belgian-dutch-validation-study
#12
Lars Costers, Jeroen Gielen, Piet L Eelen, Jeroen Van Schependom, Jorne Laton, Ann Van Remoortel, Ellen Vanzeir, Bart Van Wijmeersch, Pierrette Seeldrayers, Marie-Claire Haelewyck, Miguel D'Haeseleer, Marie-Beatrice D'hooghe, Dawn Langdon, Guy Nagels
BACKGROUND: The Brief International Cognitive Assessment for Multiple Sclerosis (BICAMS) is a fast, easy-to-administer and already widely validated neuropsychological battery for cognition in multiple sclerosis. OBJECTIVE: The goals of our study were to validate the BICAMS in a Belgian Dutch-speaking population and to investigate to what extent including extensive versions of two of the three BICAMS subtests improved its psychometric qualities. METHODS: Ninety-seven persons with MS and ninety-seven healthy controls were included and group-matched on age, education level and gender...
November 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/29140124/apprenticeship-based-training-in-neurogastroenterology-and-motility
#13
Dipesh H Vasant, Amol Sharma, Jigar Bhagatwala, Lavanya Viswanathan, Satish S C Rao
Although neurogastroenterology and motility (NGM) disorders affect 50% of patients seen in clinics, many gastroenterologists receive limited NGM training. One-month apprenticeship-based NGM training has been provided at ten centers in the USA for a decade, however, outcomes of this training are unclear. Our goal was to describe the effectiveness of this program from a trainees perspective. Areas Covered: We describe the training model, learning experiences, and outcomes of one-month apprenticeship-based training in NGM at a center of excellence, using a detailed individual observer account and data from 12 consecutive trainees that completed the program...
November 15, 2017: Expert Review of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/29139337/do-people-with-severe-traumatic-brain-injury-benefit-from-making-errors-a-randomized-controlled-trial-of-error-based-and-errorless-learning
#14
Tamara Ownsworth, Jennifer Fleming, Robyn Tate, Elizabeth Beadle, Janelle Griffin, Melissa Kendall, Julia Schmidt, Amanda Lane-Brown, Mathilde Chevignard, David H K Shum
BACKGROUND: Errorless learning (ELL) and error-based learning (EBL) are commonly used approaches to rehabilitation for people with traumatic brain injury (TBI). However, it is unknown whether making errors is beneficial in the learning process to promote skills generalization after severe TBI. OBJECTIVE: To compare the efficacy of ELL and EBL for improving skills generalization, self-awareness, behavioral competency, and psychosocial functioning after severe TBI...
November 1, 2017: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/29138998/crafting-socialist-embryology-dialectics-aquaculture-and-the-diverging-discipline-in-maoist-china-1950-1965
#15
Lijing Jiang
In the 1950s, embryology in socialist China underwent a series of changes that adjusted the disciplinary apparatus to suit socialism and the national goal of self-reliance. As the Communist state called on scientists to learn from the Soviets, embryologists' comprehensive view on heredity, which did not contradict Trofim Lysenko (1898-1976)'s doctrines, provided a space for them to advance their discipline. Leading scientists, often trained abroad in the tradition of experimental embryology, rode on the tides of Maoist ideology and repositioned their research...
November 7, 2017: History and Philosophy of the Life Sciences
https://www.readbyqxmd.com/read/29137656/how-brunei-trainee-teachers-cope-with-distress-counseling-implications
#16
Lawrence Mundia
OBJECTIVE: This study investigated the strategies used by student teachers when dealing with distress during training. Specifically, this study addressed the following research goals: (1) identify Ways of Coping that predict achievement on a quantitative reasoning test; (2) determine participants' coping differences per sex, age, and ability in quantitative reasoning; and (3) reveal coping strategies that work best for each and both sexes in fostering academic achievement in quantitative reasoning...
November 14, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/29137069/graves-disease-following-radioiodine-therapy-for-toxic-adenoma-clinical-case-report
#17
Guohua Shen, Futao Cui, Rui Huang, Anren Kuang
RATIONALE: There is a low risk of developing Graves disease (GD) with elevated thyrotropin receptor antibodies (TRAbs) in patients undergoing radioiodine therapy for toxic adenoma. PATIENT CONCERNS: An old female patient with a history of Hashimoto thyroiditis was referred to our department due to thyrotoxic symptoms. After the administration of radioiodine, a significant remission was achieved. However, after 4 months, she was referred to our department again due to recurrence of hyperthyroid symptoms...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29136556/industry-interests-in-gambling-research-lessons-learned-from-other-forms-of-hazardous-consumption
#18
S Cowlishaw, S L Thomas
Research indicates that the evidential bases for many harm reduction policies targeting hazardous consumptions (including tobacco, alcohol and gambling) have been distorted by commercial industries that derive revenue from such commodities. These distortions are best illustrated by research on tobacco and alcohol, which indicates similar tactics used by industries to determine favourable policy environments through engineering of evidence, among other approaches. Although there is concern that gambling research is similarly vulnerable to commercial interests, the relevant literature lags far behind other fields and the aim of this paper is to increase familiarity with tactics used by industries for influencing research...
November 6, 2017: Addictive Behaviors
https://www.readbyqxmd.com/read/29135854/an-academic-practice-partnership-model-to-grow-and-sustain-advanced-practice-nursing
#19
Tracy E Williams, Patricia B Howard
OBJECTIVE: The aims of this article were to describe the implementation of an academic-practice partnership for healthcare system workforce development and provide preliminary outcomes of the associated pilot study. BACKGROUND: The demand for cross-continuum healthcare delivery models necessitates creation of workforce development structures for advanced practice nursing. METHODS: An academic-practice partnership specified enrollment of 5 cohorts of BSN staff nurses in a 3-year DNP program...
December 2017: Journal of Nursing Administration
https://www.readbyqxmd.com/read/29135348/development-of-a-surgical-infection-surveillance-program-at-a-tertiary-hospital-in-ethiopia-lessons-learned-from-two-surveillance-strategies
#20
Jared A Forrester, Luca Koritsanszky, Benjamin D Parsons, Menbere Hailu, Demisew Amenu, Seifu Alemu, Fekadu Jiru, Thomas G Weiser
BACKGROUND: Surgical site infections (SSIs) are a leading cause of post-operative morbidity and mortality. We developed Clean Cut, a surgical infection prevention program, with two goals: (1) Increase adherence to evidence-based peri-operative infection prevention standards and (2) establish sustainable surgical infection surveillance. Here we describe our infection surveillance strategy. PATIENTS AND METHODS: Clean Cut was piloted and evaluated at a 523 bed tertiary hospital in Ethiopia...
November 14, 2017: Surgical Infections
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