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113 results for “Computer-based”
Demonstrative simulations of L-PEACH: a computer-based model to understand how peach trees grow
<p>L-PEACH is a computer-based model that simulates source-sink interactions, architecture and physiology of peach trees (Allen et al., 2005, 2006, 2007). The model integrates important concepts related to water transport and carbon assimilation, distribution, and use within the tree (DeJong et al., 2011). L-PEACH is able to simulate crop yield responses to commercial practices such as fruit thinning (Lopez et al., 2008) and pruning (Smith et al., 2008) and could be useful for making fruit growers understand how to optimize these operations. In this work we present several demonstrative simulations of L-PEACH to complement the existing references about L-PEACH and demonstrate its value to study, understand and teach how trees grow (DeJong et al., 2008).</p> <p>The FIRST SIMULATION corresponds with the version of L-PEACH that runs on a daily time-step (L-PEACH-d) (Lopez et al., 2008, 2010). The simulation shows the growth of a peach tree over three years. The color of the stem indicates the direction of the movement of carbon within the tree (white indicates no flux of carbon, increasing apical flux of carbon from light yellow to red, and increasing basal flux of carbon from light blue to deep purple) (see details of colors in Allen et al., 2005). During this simulation the tree was stopped during the dormant season between years and the trees were pruned by the model operator in a manner that is similar to how trees would be pruned when growing in an orchard. Also during the first year of tree growth, grafting is simulated by cutting the tree back in early spring and allowing the tree to grow again as it would in a tree nursery. After this first year the tree is cut back to a single trunk in the same manner as is commonly done when a tree is transplanted from a tree nursery to a commercial fruit orchard.</p> <p>In the SECOND SIMULATION a detailed section of the tree was selected to better appreciate the realism of leaf and fruit growth and in the THIRD SIMULATION we show how to prune a peach tree to a V-system. Responses to pruning were modelled based on the concept of apical dominance as described in Smith et al. (2008) and Lopez et al. (2008).</p> <p>Subsequent simulations correspond to the last version of the L-PEACH model that includes a xylem circuit so that the diurnal water potential of each organ could be simulated along with its physiological functioning and growth. Sub-models for leaf transpiration, soil water potential and the soil-plant interface were also incorporated to provide the driving force and pathway for water flow. In the FOURTH SIMULATION we presented the effect of different irrigation treatments (control irrigation and drought irrigation) on tree development, growth and fruit yield (Da Silva et al., 2011; 2014). L-PEACH-h was also use to illustrate the effect of severity of pruning in tree growth (FIFTH SIMULATION). We tested three levels of pruning: soft, control, and hard. The simulation indicates how trees that received hard pruning are able to recover a similar tree size than control and soft pruned trees due to the generation of vigorous shoots in response to hard pruning.</p> <p>The SIXTH SIMULATION was generated to demonstrate that L-PEACH can be also used to simulate the effect of size-controlling rootstock in tree growth (Da Silva et al., 2015). In this simulation we compared tree growth with a standard rootstock (Control) and a size-controlling rootstock (Rootstock) by reducing the hydraulic conductance of the ‘rootstock” piece (base of the trunk) by 50% in the size-controlling rootstock to simulate a reduction in vessel diameters and consequently reduced hydraulic conductance in that part of the tree. After four years of simulated growth, the virtual tree on the dwarfing rootstock was substantially smaller than the virtual tree on the control rootstock.</p> <p>What you can’t see in the movies is that the L-PEACH model calculates the distribution of light in the tree canopy as the tree grows and the rate of photosynthesis in each leaf during a simulated day or hour (depending on whether the daily or hourly models are used for the simulation). Then the distribution and use of photo-assimilates are calculated by the methods described in the papers cited below. The simulations are based on real environmental input data (light, temperature, day length, etc. collected from a real weather station located near a peach orchard) and development of tree architecture is based on developmental principles governing tree growth and detailed measurements of shoots of peach trees (see references).</p> <p><em><strong>Description of files</strong></em></p> <p>Simulation 1: L-PEACH-d over three years of growth.</p> <p>Simulation 2: Detailed growth of leaves and fruit using L-PEACH.</p> <p>Simulation 3: Pruning L-PEACH-d to a v-system.</p> <p>Simulation 4: Control irrigation vs. Drought irrigation using L-PEACH-h.</p> <p>Simulation 5: Reactions to soft, control and hard pruning using L-PEACH-h.</p> <p>Simulation 6: Simulating the effect of size-controlling rootstock using L-PEACH-h.</p>
Individual Counseling and/or Computer-Based Counseling in Helping Healthy Women Adopt a Cancer Prevention Diet
ClinicalTrials.gov study NCT00217490. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Computer-based Intervention for Alcohol-using HIV/HCV+ Women
ClinicalTrials.gov study NCT03362476. IPD Sharing: YES. Countries: 2. Publications: 3.
Pilot Clinical Trial of Computer-based Motivational Intervention - 1
ClinicalTrials.gov study NCT00230022. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Computer-Based Treatment for Social Anxiety Disorder
ClinicalTrials.gov study NCT03415022. IPD Sharing: YES. Countries: 1. Publications: 14.
Computer-Based Weight Maintenance in Primary Care
ClinicalTrials.gov study NCT01946191. IPD Sharing: YES. Countries: 1. Publications: 4.
Pilot Study of a Computer-Based Intervention for Alcohol Misuse in the Emergency Department
ClinicalTrials.gov study NCT01146665. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Magnetic Brain Stimulation and Computer-based Motor Training for Rehabilitation After Stroke
ClinicalTrials.gov study NCT06116942. IPD Sharing: YES. Countries: 1. Publications: 2.
Vax Facts Human Papillomavirus (HPV): Study of a Computer-based Tailoring System and Mothers' Intentions to Vaccinate Their Daughters Against HPV
ClinicalTrials.gov study NCT01143142. IPD Sharing: Not stated. Countries: 1. Publications: 8.
Evaluation of a Computer-Based, Self-Management Tool for People With Type 2 Diabetes
ClinicalTrials.gov study NCT00877851. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Implementing and Evaluating Computer-Based Interventions for Mental Health: Testing an Implementation Strategy for VA Outpatient Care
ClinicalTrials.gov study NCT03151083. IPD Sharing: NO. Countries: 1. Publications: 1.
Isolation and computer-based structural determination of madangolide b
Open the record for dataset details and reuse information.
Multiplicity of human scent signature: Confirmation by computer-based olfactronics
<p>Data from GCxGC-MS chromatography processed by ChromaTOF </p>
A Novel Computer-Based Therapy for Social Anxiety
ClinicalTrials.gov study NCT03240003. IPD Sharing: NO. Countries: 1. Publications: 14.
Can Computer-based Telephone Counseling Improve Long-term Adherence to Strength Training in Elders With Knee OA?
ClinicalTrials.gov study NCT01394874. IPD Sharing: NO. Countries: 1. Publications: 2.
Computer-Based Physical Activity Advice for Ethnic Minority Aging Adults
ClinicalTrials.gov study NCT01144767. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Computer-based Tutorial as Supportive Means to Enhance the Informed Consent Process for Cataract Surgery
ClinicalTrials.gov study NCT04975126. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Human Versus Computer-based Predictions of Long Allograft Survival
ClinicalTrials.gov study NCT04918199. IPD Sharing: NO. Countries: 1. Publications: 1.
Efficacy of Cognitive Rehabilitation Using Virtual Reality and Computer-based Cognitive Stimulation on Cognitive Impairment Associated to Movement Disorders
ClinicalTrials.gov study NCT05769972. IPD Sharing: Not stated. Countries: 1. Publications: 33.
Randomized Clinical Trial of Intensive Computer-based Cognitive Remediation in Recent-onset Schizophrenia
ClinicalTrials.gov study NCT00694889. IPD Sharing: Not stated. Countries: 1. Publications: 6.
ScienceDex guides
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.