1,445,879 research outputs found
rinikerlab/DASH-tree: DASH-Tree_JCIM_published
No full textDASH Tree
<p>This release corresponds to the code used to generate the results of the submission of the publication:</p>
<p><strong>DASH: Dynamic Attention-Based Substructure Hierarchy for Partial Charge Assignment</strong></p>
<p>Marc T. Lehner, Paul Katzberger, Niels Maeder, Carl C.G. Schiebroek, Jakob Teetz, Gregory A. Landrum, and Sereina Riniker
Journal of Chemical Information and Modeling 2023 63 (19), 6014-6028
DOI: 10.1021/acs.jcim.3c00800</p>
Abstract
<p>We present a robust and computationally efficient approach for assigning partial charges of atoms in
molecules. The method is based on a hierarchical tree constructed from attention values extracted
from a graph neural network (GNN), which was trained to predict atomic partial charges from accurate
quantum-mechanical (QM) calculations. The resulting dynamic attention-based substructure hierarchy
(DASH) approach provides fast assignment of partial charges with the same accuracy as the GNN itself,
is software-independent, and can easily be integrated in existing parametrization pipelines as shown for
the Open force field (OpenFF). The implementation of the DASH workflow, the final DASH tree, and
the training set are available as open source / open data from public repositories.</p>
A new approach for estimating northern peatland gross primary productivity using a satellite-sensor-derived chlorophyll index
No full textCarbon flux models that are largely driven by remotely sensed data can be used to estimate gross primary productivity (GPP) over large areas, but despite the importance of peatland ecosystems in the global carbon cycle, relatively little attention has been given to determining their success in these ecosystems. This paper is the first to explore the potential of chlorophyll-based vegetation index models for estimating peatland GPP from satellite data. Using several years of carbon flux data from contrasting peatlands, we explored the relationships between the MERIS terrestrial chlorophyll index (MTCI) and GPP, and determined whether the inclusion of environmental variables such as PAR and temperature, thought to be important determinants of peatland carbon flux, improved upon direct relationships. To place our results in context, we compared the newly developed GPP models with the MODIS (Moderate Resolution Imaging Spectrometer) GPP product. Our results show that simple MTCI-based models can be used for estimates of interannual and intra-annual variability in peatland GPP. The MTCI is a good indicator of GPP and compares favorably with more complex products derived from the MODIS sensor on a site-specific basis. The incorporation of MTCI into a light use efficiency type model, by means of partitioning the fraction of photosynthetic material within a plant canopy, shows most promise for peatland GPP estimation, outperforming all other models. Our results demonstrate that satellite data specifically related to vegetation chlorophyll content may ultimately facilitate improved quantification of peatland carbon flux dynamics
Dash-Industry-Forum/dash.js: dash.js v4.7.4
No full text<h2>Features</h2>
<p><a href="https://github.com/Dash-Industry-Forum/dash.js/pull/4338">#4338</a> Add support for DVB Font downloads as specified in ETSI TS 103 285 V1.4.1 - Section 7.2 Downloadable Fonts by @mattjuggins
<a href="https://github.com/Dash-Industry-Forum/dash.js/pull/4360">#4360</a> Add an event that enables manual rendering of subtitles by @bitboxer
<a href="https://github.com/Dash-Industry-Forum/dash.js/pull/4330">#4330</a> Add API endpoint to trigger a manifest refresh by @eirikbjornr
<a href="https://github.com/Dash-Industry-Forum/dash.js/pull/4336">#4336</a> Add IMSC settings for rollUp and displayForcedOnly by @nigelmegitt<br>
<a href="https://github.com/Dash-Industry-Forum/dash.js/pull/4382">#4382</a> Add a liveUpdateTimeThreshold to control time syncing during playback of live streams by @matvp91</p>
<h2>Improvements</h2>
<p><a href="https://github.com/Dash-Industry-Forum/dash.js/pull/4359">#4359</a> Fix flickering and blinking of IMSC subtitles by @mattjuggins
<a href="https://github.com/Dash-Industry-Forum/dash.js/pull/4350">#4350</a> Include HTTP request range in data that is passed to the modifyRequest function by @dsilhavy
<a href="https://github.com/Dash-Industry-Forum/dash.js/pull/4356">#4356</a> Remove unused depdendency foodoc and move JSDoc related dependencies to devDependencies section in the package.json by @dsilhavy
<a href="https://github.com/Dash-Industry-Forum/dash.js/pull/4362">#4362</a> Refactor DVB extensions properties to consistently use camel case. by @mattjuggins</p>
<h2>Bugfixes</h2>
<p><a href="https://github.com/Dash-Industry-Forum/dash.js/pull/4348">#4348</a> <a href="https://github.com/Dash-Industry-Forum/dash.js/pull/4349">#4349</a> Remove duplicate events in index.d.ts by @kris-youview
<a href="https://github.com/Dash-Industry-Forum/dash.js/pull/4355">#4355</a> Fix invalid warning in StreamProcessor.js by @dsilhavy
<a href="https://github.com/Dash-Industry-Forum/dash.js/pull/4335">#4335</a> Remove specific Chrome version from CircleCI config by @dsilhavy
<a href="https://github.com/Dash-Industry-Forum/dash.js/pull/4363">#4363</a> Fix PlaybackErrorEvent Typescript typing by @kris-youview
<a href="https://github.com/Dash-Industry-Forum/dash.js/pull/4365">#4365</a> Add a try/catch around matchSettingsLang in case bcp47Normalize fails with an error by @dsilhavy
<a href="https://github.com/Dash-Industry-Forum/dash.js/pull/4368">#4368</a> Check for undefined values in addHttpRequest method by @dsilhavy
<a href="https://github.com/Dash-Industry-Forum/dash.js/pull/4389">#4389</a> Fix a bug when dispatching subtitle events that causes an error in the event bus when the video is seeked by @dsilhavy</p>
Carta de P. C. Dash a Ferran Sunyer
No full textCarta rebuda de P.C. Dash, on li agraeix l'enviament dels quatre "reprints" sol·licitats i li demana altres articles seus sobre funcions enteres
A mechanism for multiple goods and interdependent valuations
No full textThis paper reports on the design of an auction mechanism for allocating multiple goods when the buyers have interdependent valuations. We cast the problem as a multi-agent system consisting of selfish, rational agents and develop an auction mechanism which is efficient, incentive compatible and individually rational. We first discuss the necessary assumptions that any mechanism developed for this scenario should satisfy so as to achieve the aforementioned properties. We then present our mechanism and show how it is a generalisation of the Vickrey-Clarke-Groves mechanism
Carta de P. C. Dash a Ferran Sunyer
No full textCarta escrita per P.C. Dash, de la Universitat de Delhi, on li demana els "reprints" de quatre articles seus que li indica, així com un llistat de les seves publicacions
Dash-Industry-Forum/dash.js: dash.js v3.2.0
No full textFeatures
3411 DASH Events: Support for onReceive mode
3424 Add Learn2Adapt ABR algorithm for low-latency streams
3469 Add LoL+ ABR algorithm for low-latency streams
3468 Enable live playback catchup for non low latency streams
3264 Add Chromecast sender and receiver applications
Improvements
3406 Compare mediaInfo objects in DashAdapter
3385 UpdateSettings new streaming parameters : trackSwitchMode and selectionModeForInitialTrack
3422 Add a fragment request timeout
3437 Use resizeObserver when available for resizing captions
3432 Add MediaPlayer.destroy to free all memory
3372 Refactor of the EventBus
3444 Add event for transition from dynamic to static
3420 Align CMCD reporting with latest changes in the spec
3428 Migrate to intern v4
3450 Remove default CID from CMCD
3456 Decrease already seen initData log from warn to info
3467 Fix timing for live gap jumps
3471 Rewrite the event timing calculation and dispatching logic
3478 Disable Event.LOG per default. Can be enabled via settings parameter
Bugfixes
3405 Fix prebuffering static mpds
3401 Fix ManifestUpdater for 'dynamic' to 'static' streams
3425 Accept non-compliant imagetype attribute name in SMPTE-TT image
3440 [MSS] fix segment duration
3414 dvb:probability should be 1000 by default
3458 Fix script error in case of AdaptationSet removal at MPD update
Fix a bug which caused the preload sample to cras
Optimal strategies for bidding agents participating in simultaneous Vickrey auctions with perfect substitutes
No full textWe derive optimal strategies for a bidding agent that participates in multiple, simultaneous second-price auctions with perfect substitutes. We prove that, if everyone else bids locally in a single auction, the global bidder should always place non-zero bids in all available auctions, provided there are no budget constraints. With a budget, however, the optimal strategy is to bid locally if this budget is equal or less than the valuation. Furthermore, for a wide range of valuation distributions, we prove that the problem of finding the optimal bids reduces to two dimensions if all auctions are identical. Finally, we address markets with both sequential and simultaneous auctions, non-identical auctions, and the allocative efficiency of the market
Cell membrane coated nanocarriers - an efficient biomimetic platform for targeted therapy
No full textTargeted therapy approaches have become the core of modern translational science and as an intriguing field, it is the solution of the conventional drug delivery problems that were once unanswered. Traditional methods of delivering drugs and therapeutics faced issues of solubility, sustained release, not enough amount getting through the diseased site, for e.g a tumor. Various formulations of liposomes, polymers, dendrimers, etc have succeeded and made their way for clinical trials trying to enhance the pharmacokinetic and biodistribution of the drug. Many stealth coatings that include hydrophilic polymers (PEG, chitosan, polyacrylamides, etc) can act as a covering around the nanoparticle that can shield the surface from aggregation, opsonization and evade immune system, thus considered in Generally Recognized as Safe (GRAS) category. Several other polymers such as poly-2-oxazoline, polyethylene oxide, PEG-based surfactant (polysorbate-80), and zwitterionic phospholipids have also been tested for their antifouling properties. However, the polymer coating approach requires labor-intensive procedures and conjugation chemistries that often fail in mice model. Besides, due to immunogenicity and allergic reactions evoked by the PEG-coated nanoparticles, there was an urge to find biomimicking materials that can prove better as shielding agents which paved the way for cell membrane coated nanoparticles (CMCNPs) to come into the limelight. CMCNPs consist of a nanoparticle inner core covered by cell membrane that can be implicated in targeted drug delivery approaches, photothermal therapy, diagnosis or imaging making it a powerful theranostic tool. In this review, mode of preparation of CMCNPs, different sources of cell membranes (RBCs, WBCs, platelets, cancer cells, stem cells with some other unconventional sources) and nanoparticle cores that are employed have been thoroughly emphasized. In addition to this, advancements and limitations with respect to this newly emerging field have been focussed
Análise das perspectivas de um programa para a substituição parcial de farinha de trigo por sucedâneos de produção nacional.
No full textTipos e índices de substituição das possíveis farinhas sucedâneas para a obtenção de farinhas mistas. Fatores fundamentais para a implementação do programa de farinhas mistas
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