Foodi - Automated Ordering System

We worked for BeSprout Technology to create an automated ordering system called Foodi. The Foodi system uses a combination of Java, IBM Watson, and MySQL to gather all the necessary information needed for the conversation, and is dynamic so it can be used in multiple restaurants. Many people still place orders via a phone call, so in an effort to streamline the ordering process, this project was created to enable automatic order placing so employees can focus on other tasks within the restaurant. When a customer calls a restaurant, Foodi will take care of any orders and answer questions the customer may have. The input from the user is sent to Watson, and is filtered through a conversation tree created with IBM’s Bluemix. Bluemix uses the user input to navigate to certain nodes. When a node in the conversation tree is hit, the user input is passed into Java code and parsed appropriately. After the input has been parsed in Java, Watson is told which node in the conversation tree to travel to next and how to respond to the user. This process is repeated until the user is finished ordering and the final order is repeated back to the customer. The restaurant receives the final order and begins preparing the food.https://scholarscompass.vcu.edu/capstone/1181/thumbnail.jp

A Structural Theory of Derivations

Operations which take in tuples of syntactic objects and assign them output syntactic objects are used to formalize the generative component of most formal grammars in the minimalist tradition. However, these models do not usually include information which relates the structure of the input and output objects explicitly. We develop a very general formal model of grammars which includes this structural change data, and also allows for richer dependency structures such as feature geometry and feature-sharing. Importantly, syntactic operations involving phrasal attachment selection, agreement, licensing, head-adjunction, etc. can all be captured as special kinds of structural changes, and hence we can analyze them using a uniform technique. Using this data, we give a rich theory of isomorphisms, equivalences, and substructures of syntactic objects, structural changes, derivations, rules, grammars, and languages. We show that many of these notions, while useful, are technically difficult or impossible to state in prior models. It is immediately possible to define grammatical notions like projection, agreement, selection, etc. structurally in a manner preserved under equivalences of various sorts. We use the richer structure of syntactic objects to give a novel characterization of c-command naturally arising from this structure. We use the richer structure of rules to give a general theory of structural analyses and generating structural changes. Our theory of structural analyses makes it possible to extract from productions what structure is targeted by a rule and what conditions a rule can apply in, regardless of the underlying structure of syntactic objects or the kinds of phrasal and featural manipulations performed, where other formal models have difficulty incorporating such structure-sensitive rules. This knowledge of structural changes also makes it possible to extend rules to new objects straightforwardly. Our theory of structural changes allows us to deconstruct them into component parts and show relationships between operations which are missed by models lacking this data. Finally, we extend the model to a copying theory of movement. We implement a traditional model of copying ‘online’, where copies and chains are formed throughout the course of the derivation (while still admitting a feature calculus in the objects themselves). Part of what allows for this is having a robust theory of substructures of derived objects and how they are related throughout a derivation. We show consequences for checking features in chains and feature-sharing

Tilt-Rotor Drone

A drone is defined a an unmanned aircraft that can fly autonomously[2]. In the year 2016, there exist many applications for small scale drones. Drones, having had primarily military applications, now have use in hobby robotics, photography, and even in surveying. But drones have not yet been perfected and still have room for much improvement. Several problems with drones come in the form of battery life, stability, and size. Large drones can fit many sensors and probes, but are heavy and have less flight time. For autonomous drones, stability can be an issue even though there exist many stable drones. Finally, drones can be large which make them difficult to move around. The project proposed in this document is a form of drone called a tilt-rotor drone. It uses only two rotors, unlike the popular four rotor design. The goal is maximizing this drone\u27s flight time while minimizing its size and cost

Better grains for feed; translational miscoding may lead to amino acid enrichment in cereal crops. [abstract]

Abstract only availableThe twenty aminoacyl tRNA synthetases have evolved from either of two distinct progenitors and are distinguishable by their structures and tRNA binding domain. The extant lysyl synthetases (KRS) are an exception, in that most archaebacteria and some bacteria express a KRS related to one progenitor but in all known eukaryotes, including plants, the KRS has evolved from another progenitor. We propose to exploit these differential requirements for charging so as to cause targeted and regulated recoding by altered tRNAlys in plants. We have demonstrated that translational recoding by altered tRNAlys will cause nutritional enrichment of seed storage proteins of rice and maize (Wu et al, 2003; Wu et al, 2007). However, the amount of recoding required to achieve sufficient enhancement to satisfy human nutritional requirements may exceed the tolerance for translational recoding in vegetative and reproductive tissues, there by reducing agronomic traits. Consequently, the utilization of the altered (Bb)tRNAlys must be targeted to endosperm, using endosperm specific promoters to express the BbKRS. The BbKRS gene has been modified to contain preferred plant codons and to remove many processing signals important in eukaryotes; it must be placed under the control of CaMV35S promoter and endosperm specific promoters and sequences confirmed. A Flag tag was place at the C-terminal of all constructs for detection of expression. Concomitantly, the (Bb)tRNAlys placed surrounded by plant tRNA flanking sequences has been constructed so as to permit expression in plants (Ulmasov and Folk, 1995) and expression in plant protoplasts will be examined by Northern blotting

Optical variability of quasars with 20-yr photometric light curves

Artículo escrito por un elevado número de autores, solo se referencian el que aparece en primer lugar, los autores pertenecientes a la UAM y el nombre del grupo de colaboración, si lo hubiereThis is a pre-copyedited, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The version of record Monthly Notices of the Royal Astronomical Society 514.1 (2022): 164-184 is available online at: https://academic.oup.com/mnras/article-abstract/514/1/164/6588051We study the optical gri photometric variability of a sample of 190 quasars within the SDSS Stripe 82 region that have long-term photometric coverage during ∼1998-2020 with SDSS, PanSTARRS-1, the Dark Energy Survey, and dedicated follow-up monitoring with Blanco 4m/DECam. With on average ∼200 nightly epochs per quasar per filter band, we improve the parameter constraints from a Damped Random Walk (DRW) model fit to the light curves over previous studies with 10-15 yr baselines and 100 epochs. We find that the average damping time-scale τDRW continues to rise with increased baseline, reaching a median value of ∼750 d (g band) in the rest frame of these quasars using the 20-yr light curves. Some quasars may have gradual, long-term trends in their light curves, suggesting that either the DRW fit requires very long baselines to converge, or that the underlying variability is more complex than a single DRW process for these quasars. Using a subset of quasars with better-constrained τDRW (less than 20 per cent of the baseline), we confirm a weak wavelength dependence of τDRWλ0.51 ± 0.20. We further quantify optical variability of these quasars over days to decades time-scales using structure function (SF) and power spectrum density (PSD) analyses. The SF and PSD measurements qualitatively confirm the measured (hundreds of days) damping time-scales from the DRW fits. However, the ensemble PSD is steeper than that of a DRW on time-scales less than ∼a month for these luminous quasars, and this second break point correlates with the longer DRW damping time-scal

An Unsplit Godunov Method for Ideal MHD via Constrained Transport in Three Dimensions

We present a single step, second-order accurate Godunov scheme for ideal MHD which is an extension of the method described by Gardiner & Stone (2005) to three dimensions. This algorithm combines the corner transport upwind (CTU) method of Colella for multidimensional integration, and the constrained transport (CT) algorithm for preserving the divergence-free constraint on the magnetic field. We describe the calculation of the PPM interface states for 3D ideal MHD which must include multidimensional ``MHD source terms'' and naturally respect the balance implicit in these terms by the ${\bf\nabla\cdot B}=0$ condition. We compare two different forms for the CTU integration algorithm which require either 6- or 12-solutions of the Riemann problem per cell per time-step, and present a detailed description of the 6-solve algorithm. Finally, we present solutions for test problems to demonstrate the accuracy and robustness of the algorithm.Comment: Extended version of the paper accepted for publication in JC

Prospective randomized trial of ACUSEAL (Gore-Tex) versus Hemashield-Finesse patching during carotid endarterectomy: Early results

Background/PurposeSeveral studies have reported that carotid endarterectomy (CEA) with patch angioplasty produces superior results compared with primary closure. Conventional polytetrafluoroethylene (PTFE) patching has been shown to have results comparable to autogenous vein patching; however, it requires a prolonged hemostasis time. Therefore, many surgeons use collagen-impregnated Dacron patching (Hemashield [HP]). Recently, we reported a satisfactory hemostasis time using the new hemostatic PTFE patch (ACUSEAL by Gore). This study is the first prospective randomized trial comparing the ACUSEAL patch with the HP Finesse patch.Methods200 CEAs were 1:1 randomized into two patch closure groups (ACUSEAL or Finesse). All patients underwent immediate and 1 month postoperative duplex ultrasound studies. Demographic and clinical characteristics were similar in both groups, including the mean operative diameter of the internal carotid artery and length of arteriotomy.ResultsThe overall perioperative ipsilateral stroke rate was 2% (2% ACUSEAL, 2% Finesse; P = 1.0). The perioperative ipsilateral TIA rates were 0% for the ACUSEAL and 2% for the Finesse patch (P = .5). The combined perioperative neurological event (TIA + stroke) rates were 2% for ACUSEAL and 4% for the Finesse (P = .68). The early ≥50% restenosis rate was 0% for ACUSEAL vs 4% for Finesse patching. Two perioperative carotid thromboses were noted with Finesse patching vs none with ACUSEAL patching (P = .50). The combined early morbidity rate (TIA, stroke, and ≥50% restenosis or thrombosis) was 2% for the ACUSEAL patch vs 8% for the Finesse patch (P = .10). The mean hemostasis time for the ACUSEAL and Finesse patches was 5.1 vs 3.7 minutes (P = .01), however, the mean operative times were similar for both groups (P = .61).ConclusionThe perioperative neurological events and overall short-term morbidity associated with CEA when using ACUSEAL or Finesse patches were similar. Both patches have short hemostasis times