Influence of the variation of geometrical and topological traits on light interception efficiency of apple trees: sensitivity analysis and metamodelling for ideotype definition

Background and AimsThe impact of a fruit tree's architecture on its performance is still under debate, especially with regard to the definition of varietal ideotypes and the selection of architectural traits in breeding programmes. This study aimed at providing proof that a modelling approach can contribute to this debate, by using in silico exploration of different combinations of traits and their consequences on light interception, here considered as one of the key parameters to optimize fruit tree production.MethodsThe variability of organ geometrical traits, previously described in a bi-parental population, was used to simulate 1- to 5-year-old apple trees (Malus × domestica). Branching sequences along trunks observed during the first year of growth of the same hybrid trees were used to initiate the simulations, and hidden semi-Markov chains previously parameterized were used in subsequent years. Tree total leaf area (TLA) and silhouette to total area ratio (STAR) values were estimated, and a sensitivity analysis was performed, based on a metamodelling approach and a generalized additive model (GAM), to analyse the relative impact of organ geometry and lateral shoot types on STAR.Keys ResultsA larger increase over years in TLA mean and variance was generated by varying branching along trunks than by varying organ geometry, whereas the inverse was observed for STAR, where mean values stabilized from year 3 to year 5. The internode length and leaf area had the highest impact on STAR, whereas long sylleptic shoots had a more significant effect than proleptic shoots. Although the GAM did not account for interactions, the additive effects of the geometrical factors explained >90% of STAR variation, but much less in the case of branching factors.ConclusionsThis study demonstrates that the proposed modelling approach could contribute to screening architectural traits and their relative impact on tree performance, here viewed through light interception. Even though trait combinations and antagonism will need further investigation, the approach opens up new perspectives for breeding and genetic selection to be assisted by varietal ideotype definition

Challenges of Becoming a Scholar: A Study of Doctoral Students' Problems and Well-Being

Peer reviewe

Doctor of Healthcare Administration at Franklin University

The healthcare profession has been experiencing dramatic change due to healthcare reform and there continues to be significant challenges on the horizon for healthcare leaders. Healthcare leaders will be facing challenges such as a large number of the work force reaching the age of retirement, a decrease in people entering into the healthcare profession, and a 22-28% increase in demand for healthcare services through 2020. Existing and future healthcare leaders will need to poses a high level of knowledge and skill in healthcare delivery in order to meet these challenges. Academic healthcare programs can help train a future workforce of leaders by offering a Doctorate of Healthcare Administration (DHA). Unlike a traditional Doctorate of Philosophy (Ph.D.), where the focus is on creating new theoretical models, a DHA focusing on operationalizing theory into practical application.https://fuse.franklin.edu/ss2014/1016/thumbnail.jp

Week of May 2, 2016

BioInc@NYMC Encourages Entrepreneurial Spirit at Pitching to the Angels Event Department of Physical Therapy Presents Twelfth Annual Doctoral Project Presentation Dayhttps://touroscholar.touro.edu/in_touch/1249/thumbnail.jp

InTouch Week of April 22, 2024

Erika Berman Rosenzweig, M.D., to Lead NYMC Department of Pediatrics Distinguished Speakers Will Deliver Remarks to the Graduating Class of 2024 D.P.T. Class of 2026 Celebrates the Start of Clinicals with the White Coat Ceremony Division of Physical Therapy Hosts 20th Annual Doctoral Project Presentation Day NYMC Graduates Reunite at the Alumni Neurology Reunion NYMC Students’ Altruism Shines with Woodfield Cottage Youth Initiative Faculty Spotlight: Rebecca A. McAteer Martin, M.D. \u2708, Shares her Mission in Healinghttps://touroscholar.touro.edu/in_touch/1324/thumbnail.jp

Week of April 27, 2015

NYMC Receives the Business Council of Westchester Corporate Citizenship Award NYMC Celebrates Earth Day Doctoral Projects Demonstrate Breadth and Depth of Physical Therapy New York Mets Tickets Raffle Winnerhttps://touroscholar.touro.edu/in_touch/1282/thumbnail.jp

Galaxy and Mass Assembly (GAMA): Panchromatic data release (far-UV–far-IR) and the low-z energy budget

We present the Galaxy And Mass Assembly (GAMA) Panchromatic Data Release (PDR) constituting over 230 deg2 of imaging with photometry in 21 bands extending from the farUV to the far-IR. These data complement our spectroscopic campaign of over 300k galaxies, and are compiled from observations with a variety of facilities including: GALaxy Evolution eXplorer, Sloan Digital Sky Survey, Visible and Infrared Telescope for Astronomy (VISTA), Wide-field Infrared Survey Explorer, and Herschel, with the GAMA regions currently being surveyedbyVLTSurveyTelescope(VST)andscheduledforobservationsbyAustralianSquare Kilometer Array Pathfinder (ASKAP). These data are processed to a common astrometric solution, from which photometry is derived for ∼221373 galaxies with r < 19.8 mag. Online tools are provided to access and download data cutouts, or the full mosaics of the GAMA regions in each band. We focus, in particular, on the reduction and analysis of the VISTA VIsta Kilo-degree INfrared Galaxy data, and compare to earlier data sets (i.e. 2MASS and UKIDSS) before combining the data and examining its integrity. Having derived the 21-band photometric catalogue, we proceed to fit the data using the energy balance code MAGPHYS. These measurements are then used to obtain the first fully empirical measurement of the 0.1–500 μm energy output of the Universe. Exploring the cosmic spectral energy distribution across three time-intervals (0.3–1.1, 1.1–1.8, and 1.8–2.4 Gyr), we find that the Universe is currently generating (1.5 ± 0.3) × 1035 h70 W Mpc−3, down from (2.5 ± 0.2) × 1035 h70 W Mpc−3 2.3 Gyr ago. More importantly, we identify significant and smooth evolution in the integrated photon escape fraction at all wavelengths, with the UV escape fraction increasing from 27(18) per cent at z= 0.18 in NUV(FUV) to 34(23) per cent at z= 0.06. The GAMA PDR can be found at: http://gama-psi.icrar.org/

Week of April 10, 2017

New York Medical College and Westchester Medical Center Enter Into Long-Term Academic Affiliation Agreement NYMedTalks Explores Crossroads of Health Care and Technology Chancellor Halperin Addresses NYMC Community at Town Hall Meeting SOM P2P Committee Recognizes Role Models at NYMC NYMC Receives Full Accreditation From AAALAChttps://touroscholar.touro.edu/in_touch/1217/thumbnail.jp

Week of April 20, 2015

NYMC Welcomes New BioInc Client Town Hall Meeting Keeps NYMC Community Informed about Project Enterprise FCM and PT Team Up for an Interprofessional Education Opportunity Construction is Set to Commence for New Walkway to Provide Better Campus Connectivity College Community Rallies to Help Medical Students Displaced by Off-Campus Fire LCME Standard of the Weekhttps://touroscholar.touro.edu/in_touch/1283/thumbnail.jp