Journal articles: 'Hybrid LPV'

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Njeh, M., S. Cauet, and P. Coirault. "LPV control of ICE torque ripple in hybrid electric vehicles." IFAC Proceedings Volumes 44, no. 1 (January 2011): 2931–36. http://dx.doi.org/10.3182/20110828-6-it-1002.01345.

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Cauet, Sebastien, Erik Etien, and Laurent Rambault. "Mechanical sensorless LPV torque ripple control of hybrid electric vehicle." IET Control Theory & Applications 11, no. 16 (November 3, 2017): 2761–71. http://dx.doi.org/10.1049/iet-cta.2017.0007.

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Malik, Arshad Habib, Aftab Ahmed Memon, and Feroza Arshad. "Fractional order multi-scheduling parameters based LPV modelling and robust switching H∞ controllers design for steam dump system of nuclear power plant." Mehran University Research Journal of Engineering and Technology 41, no. 2 (April 1, 2022): 197–207. http://dx.doi.org/10.22581/muet1982.2202.19.

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In this research work, the highly challenging problem of novel modelling and nonlinear control of steam dump system of Pressurized Water Reactor (PWR) type Nuclear Power Plant (NPP) is attempted. The Fractional Order Multi- Scheduling Parameters based Multi-Input Single- Output Linear Parameter Varying (FO-MSP-MISO-LPV) model of Steam Dump System (SDS) is estimated with uncertain dynamics under sudden load variation transients. MSP for uncertain dynamics of SDS in FO framework is the most challenging problem and attempted in a novel fashion for the first time in nuclear industry. Scheduling parameters are dynamic in nature that makes the control problem more challenging. The Model is estimated experimentally by least square method using innovative plant operational data of opening positions of different valves as input variables and steam pressure as an output variable and cold leg coolant temperature coefficient of reactivity, hot leg coolant temperature coefficient, steam flow rate and turbine power as dynamic scheduling parameters. A switching controller is designed to address variable conditions of steam pressure for the actuation of dump valves, relief valves and safety valves in SDS. A robust fractional order LPV switching H∞ (RFO-LPV-SWH∞) controllers are formulated and designed for FO-MSP-MISO-LPV model. The design of RFO-LPV-SWH∞ controllers is another significant contribution in switching mode with non-integer and LPV hybrid framework. RFO-LPV-SWH∞ controllers are tested, simulated and validated against benchmark transients as laid down in Final Safety Analysis Report (FSAR) of PWR-type NPP. The input and output variables at first and second vertex of polytope are fast reference tracking under highly nonlinear uncertain dynamics of SDS. Closed loop simulation experiments are conducted and proved that the proposed closed framework is robust in performance under parametric uncertainty.

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Boukerrou, Hamid, Gilles Millerioux, and Marine Minier. "Hybrid architecture of LPV dynamical systems in the context of cybersecurity." IFAC-PapersOnLine 54, no. 8 (2021): 154–61. http://dx.doi.org/10.1016/j.ifacol.2021.08.596.

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Lescher, Fabien, Jing-Yun Zhao, and Pierre Borne. "Switching LPV Controllers for a Variable Speed Pitch Regulated Wind Turbine." International Journal of Computers Communications & Control 1, no. 4 (October 1, 2006): 73. http://dx.doi.org/10.15837/ijccc.2006.4.2309.

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This paper deals with the control of a variable speed, pitch regulated wind turbine in the whole plant operating area. The wind turbine operating area can be divided into several zones, depending on the wind speed, and the control objectives are different for each operating zone. An hybrid control system composed by several LPV controllers which switches during transitions from one operating area to another is designed in order to ensure asymptotic stability and a good level of performances in the whole operating area. The LPV controllers are calculated from a convex LMI formulation of the problem in order to minimize an H2=H¥ criteria that optimizes the energy conversion of the system and that reduces the mechanical fatigue of the plant mechanical structure. The proposed controller is finally compared with two more conventional ones.

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Bett, Christopher J., and Michael D. Lemmon. "Bounded amplitude performance of switched LPV systems with applications to hybrid systems." Automatica 35, no. 3 (March 1999): 491–503. http://dx.doi.org/10.1016/s0005-1098(98)00180-0.

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Ileana Dumbrava, Ecaterina Elena, Lauren Brusco, Molly S. Daniels, Chetna Wathoo, Kenna Rael Shaw, Karen H. Lu, Xiaofeng Zheng, et al. "Prevalence of incidental germline pathogenic (PV) and likely pathogenic (LPV) variants in hereditary cancer-related genes identified in matched tumor/normal sequencing of advanced solid tumors." Journal of Clinical Oncology 35, no. 15_suppl (May 20, 2017): 1524. http://dx.doi.org/10.1200/jco.2017.35.15_suppl.1524.

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1524 Background: Next-generation sequencing (NGS) for tumor molecular profiling can reveal germline incidental mutations in hereditary cancer-related genes. The American College of Medical Genetics and Genomics (ACMG) has recommended that laboratories performing clinical sequencing seek and report PV and LPV in 56 genes. We assessed the prevalence of incidental germline LPV and PV in other cancer-related genes among patients undergoing hybrid capture sequencing of 201 cancer-related genes. Methods: Matched tumor and germline DNA NGS of a targeted panel of 201 genes was performed in 1000 patients (pts) with advanced or metastatic solid tumors enrolled in a molecular testing protocol (NCT01772771) in a research laboratory. We previously reported germline alterations in the putative most actionable genes as designated by ACMG (PMID: 26787237). We assessed the germline LPV and PV in 54 additional cancer-related genes. Results: Among the 1000 patients who underwent tumor and normal DNA sequencing, 37 patients (3.7%) were found to have a germline PV or LPV in the following genes: ATM (4); BAP1 (1); CDH1 (1); CDKN2A (1); CHEK1 (2); CHEK2 (10); EGFR (1); ERCC3 (4); ERCC5 (1); HNF1B (1); HRAS (1); MLL3 (1); NF1 (3); PKHD1 (4); PTCH1 (1) and SMARCA4 (1). Eight pts (22%) had previous genetic counseling and testing for various reasons, but only 3 pts (8%) had previously identified alterations (all with NF1 mutations). After discussion in our return of germline results board, it was decided to return the findings in established hereditary cancer predisposition genes with high penetrance: BAP1 (p.Y401X), CDH1 (p.C688X), CDKN2A (p.G101W), EGFR (p.T790M) and SMARCA4 (p.S332FfsX55) after validation in a CLIA laboratory. Conclusions: Return of the previously unrecognized germline LPV or PV in patients with advanced or metastatic cancers who undergo somatic profiling is of great interest. The exact genes for which the germline results should be returned is controversial. Broader genomic testing is likely to identify additional incidental germline alterations with potential clinical utility to patients and their relatives.

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Bin He and Minggao Yang. "Robust LPV control of diesel auxiliary power unit for series hybrid electric vehicles." IEEE Transactions on Power Electronics 21, no. 3 (May 2006): 791–98. http://dx.doi.org/10.1109/tpel.2006.872365.

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Cauet, S., P. Coirault, and M. Njeh. "Diesel engine torque ripple reduction through LPV control in hybrid electric vehicle powertrain: Experimental results." Control Engineering Practice 21, no. 12 (December 2013): 1830–40. http://dx.doi.org/10.1016/j.conengprac.2013.03.005.

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Liu, Xiaofeng. "An Improved Hybrid Kalman Filter Design for Aircraft Engine based on a Velocity-Based LPV Framework." International Journal of Aeronautical and Space Sciences 18, no. 3 (September 30, 2017): 535–44. http://dx.doi.org/10.5139/ijass.2017.18.3.535.

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Rotondo, Damiano, Fatiha Nejjari, and Vicenç Puig. "Robust Quasi–LPV Model Reference FTC of a Quadrotor Uav Subject to Actuator Faults." International Journal of Applied Mathematics and Computer Science 25, no. 1 (March 1, 2015): 7–22. http://dx.doi.org/10.1515/amcs-2015-0001.

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Abstract A solution for fault tolerant control (FTC) of a quadrotor unmanned aerial vehicle (UAV) is proposed. It relies on model reference-based control, where a reference model generates the desired trajectory. Depending on the type of reference model used for generating the reference trajectory, and on the assumptions about the availability and uncertainty of fault estimation, different error models are obtained. These error models are suitable for passive FTC, active FTC and hybrid FTC, the latter being able to merge the benefits of active and passive FTC while reducing their respective drawbacks. The controller is generated using results from the robust linear parameter varying (LPV) polytopic framework, where the vector of varying parameters is used to schedule between uncertain linear time invariant (LTI) systems. The design procedure relies on solving a set of linear matrix inequalities (LMIs) in order to achieve regional pole placement and H∞ norm bounding constraints. Simulation results are used to compare the different FTC strategies.

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Zhang, Jingying, Kang Meng, and Gang Ni. "Enhanced Lateral Photovoltaic Effects in n-Si/SiO2/PEDOT:PSS Structures." Polymers 14, no. 7 (March 31, 2022): 1429. http://dx.doi.org/10.3390/polym14071429.

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Organic/silicon hybrid structures have been extensively studied for the application of solar cells due to their high photoelectric conversion efficiency and simple fabrication process. However, studies of lateral photovoltaic effects (LPEs) in the devices are still scarce. Herein, the Si/SiO2/PEDOT:PSS devices were prepared by spin-coating, and showing the lateral photovoltage (LPV) sensitivity of 14.0 mV/mm at room temperature, which is higher than the control samples of Si/SiO2 (0.1 mV/mm) and Si/PEDOT:PSS (9.0 mV/mm) structures. With the decrease in temperature, the lateral photovoltage increases initially, and reaches a peak at around 210 K, then drops accordingly. The enhancement of LPE can be mainly ascribed to the formation of the p-n junction and the native oxide layer at the organic/inorganic interface.

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Beneyto, Aleix, Vicenç Puig, B. Wayne Bequette, and Josep Vehi. "A Hybrid Automata Approach for Monitoring the Patient in the Loop in Artificial Pancreas Systems." Sensors 21, no. 21 (October 27, 2021): 7117. http://dx.doi.org/10.3390/s21217117.

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The use of automated insulin delivery systems has become a reality for people with type 1 diabetes (T1D), with several hybrid systems already on the market. One of the particularities of this technology is that the patient is in the loop. People with T1D are the plant to control and also a plant operator, because they may have to provide information to the control loop. The most immediate information provided by patients that affects performance and safety are the announcement of meals and exercise. Therefore, to ensure safety and performance, the human factor impact needs to be addressed by designing fault monitoring strategies. In this paper, a monitoring system is developed to diagnose potential patient modes and faults. The monitoring system is based on the residual generation of a bank of observers. To that aim, a linear parameter varying (LPV) polytopic representation of the system is adopted and a bank of Kalman filters is designed using linear matrix inequalities (LMI). The system uncertainty is propagated using a zonotopic-set representation, which allows determining confidence bounds for each of the observer outputs and residuals. For the detection of modes, a hybrid automaton model is generated and diagnosis is performed by interpreting the events and transitions within the automaton. The developed system is tested in simulation, showing the potential benefits of using the proposed approach for artificial pancreas systems.

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Deng, Jun, Jianbo Wang, Shupeng Li, Haijing Zhang, Shutao Peng, and Tong Wang. "Adaptive Damping Design of PMSG Integrated Power System with Virtual Synchronous Generator Control." Energies 13, no. 8 (April 19, 2020): 2037. http://dx.doi.org/10.3390/en13082037.

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With the continuous development of wind power capacity, a large number of wind turbines connected by power electronic devices make the system inertia lower, which leads to the problem of system frequency stability degradation. The virtual synchronous generator (VSG) control can make wind turbines possess inertia and damping. However, the stochastic dynamic behavior of wind generation results in the stochastic changing of operating condition; this paper presents an adaptive subsynchronous oscillation (SSO) damping control method for the wind generation with VSG control. Firstly, the small signal model of the permanent magnet synchronous generator (PMSG) with VSG is built, and the model of state space is derived and built. The active power of PMSG is selected as the variable parameter vector to establish a polytopic linear variable parameter system model. Then, based on the hybrid H2/H∞ control method, each vertex state feedback matrix is solved by linear matrix inequality, and a subsynchronous oscillation adaptive damping controller with polytope is obtained. Finally, the 4-machine 2-area system connected to two PMSGs with VSG control is used as the test system for time domain simulation. The simulation results demonstrate that the LPV based adaptive damping controller could provide enough damping under the circumstances of wider changes of wind power outputs.

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Dybowski, Konrad, Bartłomiej Januszewicz, Paulina Kowalczyk, and Damian Batory. "HYBRID LAYER TYPE Cr/LPC." Advances in Science and Technology Research Journal 11, no. 2 (June 1, 2017): 23–27. http://dx.doi.org/10.12913/22998624/67672.

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Puterka, G. J., R. Scorza, and M. W. Brown. "Reduced Incidence of Lesser Peachtree Borer and Leucostoma Canker in Peach-Almond Hybrids." Journal of the American Society for Horticultural Science 118, no. 6 (November 1993): 864–67. http://dx.doi.org/10.21273/jashs.118.6.864.

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Damage by lesser Peachtree borer (LPB) (Synanthedon pictipes Grote & Robinson) and Leucostoma canker that had accumulated during 6 (Orchard A) and 8 (Orchard B) years were compared in peach (Prunus persica L.) and peach-almond [P. amygdalus (Mill.) D. A. Webb] hybrids. Afterward, the main trunk and scaffold limbs of the trees received 10 wounds 26 mm in diameter and a subset of these trees in Orchard A had wounds inoculated with Leucostoma persoonii Hohn. Before wounding, Leucostoma canker infection and LPB infestations that had accumulated for 6 to 8 years on peach-almond hybrids was ≈60% and 98% less than on peach in Orchard A and B, respectively. One month after wounding the trees, no significant differences in Leucostoma canker infection and LPB infestations were found among the peach-almond hybrids, treated or not treated with L. persoonii, or untreated peach. Yet, Leucostoma- treated and untreated peach-almond hybrids had 33% and 25% less Leucostoma canker and LPB, respectively, when compared with Leucostoma- treated peach. Ten months after wounding, peach-almond hybrids treated with L. persoonii still had significantly less Leucostoma canker (60%) and LPB (25%) when compared with Leucostoma- treated peach. Wound gumming and wound closure rates seemed to influence the degree of LPB infestation and Leucostoma canker. Based on these data, peach-almond hybrids could be valuable sources of resistance to LPB and Leucostoma canker.

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Manning, Chloe, Colette O’Neill, Ian N. Clarke, Monica Rebec, Penelope R. Cliff, and Peter Marsh. "High-resolution genotyping of Lymphogranuloma Venereum (LGV) strains of Chlamydia trachomatis in London using multi-locus VNTR analysis-ompA genotyping (MLVA-ompA)." PLOS ONE 16, no. 7 (July 8, 2021): e0254233. http://dx.doi.org/10.1371/journal.pone.0254233.

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Background Lymphogranuloma venereum (LGV) is caused by Chlamydia trachomatis strains with ompA genotypes L1 to L3. An LGV epidemic associated with the L2b genotype has emerged in the past few decades amongst men who have sex with men (MSM). C. trachomatis genotypes can be discriminated by outer membrane protein A gene (ompA) sequencing, however this method has limited resolution. This study employed a high-resolution genotyping method, namely, multi-locus tandem repeat (VNTR) analysis with ompA sequencing (MLVA-ompA), to assess the distribution of LGV MLVA-ompA genotypes amongst individuals attending genitourinary medicine (GUM) clinics in London. Methods Clinical specimens were collected from individuals attending eight London-based GUM clinics. Specimens that tested positive for C. trachomatis by commercial nucleic acid amplification test (NAAT) were confirmed as LGV by pmpH real-time PCR. LGV-positive DNA extracts were subsequently genotyped using MLVA-ompA. Results Two hundred and thirty DNA extracts were confirmed as LGV, and 162 (70%) yielded complete MLVA-ompA genotypes. Six LGV MLVA-ompA genotypes were identified: 1.9.2b-L2, 1.9.3b-L2b, 1.9.2b-L2b, 1.9.2b-L2b/D, 1.4a.2b-L2b, and 5.9.2b-L1. The following LGV ompA genotypes were identified (in descending order of abundance): L2, L2b, L2b/D, and L1. Eight ompA sequences with the hybrid L2b/D profile were detected. The hybrid sequence was identical to the ompA of a recombinant L2b/D strain detected in Portugal in 2017. Conclusions The L2 ompA genotype was found to predominate in the London study population. The study detected an unusual hybrid L2b/D ompA profile that was previously reported in Portugal. We recommend further monitoring and surveillance of LGV strains within the UK population.

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Milewski, Jaroslaw, and Andrzej Miller. "Influences of The Type and Thickness of Electrolyte on Solid Oxide Fuel Cell Hybrid System Performance." Journal of Fuel Cell Science and Technology 3, no. 4 (March 7, 2006): 396–402. http://dx.doi.org/10.1115/1.2349519.

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This paper sets out the results of mathematical modeling and numerical simulations with regard to the influences of the type and thickness of electrolyte on Solid Oxide Fuel Cell Hybrid System (SOFC-HS) performance. A change of electrolyte materials can result in total hybrid system efficiency increasing from around 48% HHV (53% LHV) to about 65% HHV (72% LHV) in an environment where turbine inlet temperature and gas turbine subsystem pressure ratio remain unchanged. The governing equations of SOFC-HS modeling are given. An adequate simulator of the SOFC stack was made and described. Based on this simulator, a model of the 260kWe Siemens Westinghouse unit was built. The performance of this SOFC-HS with different electrolyte materials and thicknesses is shown, and some characteristics are given and described. The advantages and disadvantages of different electrolyte types from a hybrid system performance point of view are indicated.

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Florea, Simona, Jolanta Jaromczyk, and Christopher L. Schardl. "Non-Transgenic CRISPR-Mediated Knockout of Entire Ergot Alkaloid Gene Clusters in Slow-Growing Asexual Polyploid Fungi." Toxins 13, no. 2 (February 16, 2021): 153. http://dx.doi.org/10.3390/toxins13020153.

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The Epichloë species of fungi include seed-borne symbionts (endophytes) of cool-season grasses that enhance plant fitness, although some also produce alkaloids that are toxic to livestock. Selected or mutated toxin-free endophytes can be introduced into forage cultivars for improved livestock performance. Long-read genome sequencing revealed clusters of ergot alkaloid biosynthesis (EAS) genes in Epichloë coenophiala strain e19 from tall fescue (Lolium arundinaceum) and Epichloë hybrida Lp1 from perennial ryegrass (Lolium perenne). The two homeologous clusters in E. coenophiala—a triploid hybrid species—were 196 kb (EAS1) and 75 kb (EAS2), and the E. hybrida EAS cluster was 83 kb. As a CRISPR-based approach to target these clusters, the fungi were transformed with ribonucleoprotein (RNP) complexes of modified Cas9 nuclease (Cas9-2NLS) and pairs of single guide RNAs (sgRNAs), plus a transiently selected plasmid. In E. coenophiala, the procedure generated deletions of EAS1 and EAS2 separately, as well as both clusters simultaneously. The technique also gave deletions of the EAS cluster in E. hybrida and of individual alkaloid biosynthesis genes (dmaW and lolC) that had previously proved difficult to delete in E. coenophiala. Thus, this facile CRISPR RNP approach readily generates non-transgenic endophytes without toxin genes for use in research and forage cultivar improvement.

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Chakraborti, N., and R. Misra. "A hybrid Hadamard LPC scheme for picture coding." IEEE Transactions on Acoustics, Speech, and Signal Processing 35, no. 3 (March 1987): 391–94. http://dx.doi.org/10.1109/tassp.1987.1165140.

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Grupa-Dolińska, Magdalena. "Frazeologiczne kalki, półkalki i hybrydy w mowie dwujęzycznej społeczności staroobrzędowców mieszkających w Polsce." LingVaria 14, no. 27 (May 31, 2019): 249–58. http://dx.doi.org/10.12797/lv.14.2019.27.16.

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Phraseological Calques, Semi-calques and Hybrids in the Language of the Bilingual Community of Old Believers in PolandThe paper is an attempt to create the definitions of and delimitations between the terms calque, semi-calque, and phraseological hybrid, based on the material collected among the bilingual community of Old Believers in Poland. Many scientfic papers have been written on calques, semi-calques, and phraseological hybrids, contributing to a better understanding of those linguistic phenomena, and deepening the possibilities of their interpretation. Calques, semi-calques, and lexical hybrids have been described in a quite satisfactory way; with reference to phraseology, however, theoretical and methodological discussions are still lacking. Their correct interpretation is key for an analysis of the phraseological store of the bilingual community of Old Believers in Poland. For more than half a century, their Russian dialect has been subjected to an incessant, strong influence of Polish, resulting in the appearance of an increasingly large number of elements borrowed from Polish, especially in the lexical system: borrowings, lexical calques, as well as phraseological calques and semi-calques.

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Ullah, Azmat, Muhammad Zahoor, Sultan Alam, Riaz Ullah, Ali S. Alqahtani, and Hafiz Majid Mahmood. "Separation of Levofloxacin from Industry Effluents Using Novel Magnetic Nanocomposite and Membranes Hybrid Processes." BioMed Research International 2019 (April 4, 2019): 1–13. http://dx.doi.org/10.1155/2019/5276841.

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Magnetic carbon nanocomposite (MCN) was synthesized from waste biomass precursor, pineapple. The prepared adsorbent was characterized using different instrumental techniques and was used to remove levofloxacin (LEV) from effluents. The maximum sorption of LEV was observed at pH 7. Pseudo-2nd-order (PSO) kinetic was found to be the best model that fits well the adsorption kinetics data. For Langmuir adsorption isotherm, the R2 value was higher as compared with other isotherms. The Van’t Hoff equation was used for thermodynamic parameters determinations. ΔS° (standard entropy) was positive and ΔG° (standard Gibb’s free energy) was negative: -0.37, -1.81, and -3.73 kJmol−1 corresponding to 25, 40, and 60°C. The negative values of ΔG° at different temperatures stipulate that the adsorption of LEV was spontaneous in nature and adsorbent has a considerable affinity for LEV molecules. The MCN was then utilized in hybrid way by connecting with ultrafiltration (UF), nanofiltration (NF), and reverse osmosis (RO) membranes in series and as a result enhanced permeate fluxes were observed. The percent retention of LEV molecules was lower with UF membrane and with NF it was 96%, while it was 100% with RO. For MCN/UF and MCN/NF systems, improvement in % retention was recorded.

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Ganley, Austen R. D., and Barry Scott. "Extraordinary Ribosomal Spacer Length Heterogeneity in a Neotyphodium Endophyte Hybrid: Implications for Concerted Evolution." Genetics 150, no. 4 (December 1, 1998): 1625–37. http://dx.doi.org/10.1093/genetics/150.4.1625.

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Abstract An extraordinary level of length heterogeneity was found in the ribosomal DNA (rDNA) of an asexual hybrid Neotyphodium grass endophyte, isolate Lp1. This hybrid Neotyphodium endophyte is an interspecific hybrid between two grass endophytes, Neotyphodium lolii, and a sexual form, Epichlöe typhina, and the length heterogeneity was not found in either of these progenitor species. The length heterogeneity in the hybrid is localized to the intergenic spacer (IGS) and is the result of copy-number variation of a tandemly repeated subrepeat class within the IGS, the 111-/119-bp subrepeats. Copy number variation of this subrepeat class appears to be a consequence of mitotic unequal crossing over that occurs between these subrepeats. This implies that unequal crossing over plays a role in the concerted evolution of the whole rDNA. Changes in the pattern of IGS length variants occurred in just two rounds of single-spore purification. Analysis of the IGS length heterogeneity revealed features that are unexpected in a simple model of unequal crossing over. Potential refinements of the molecular details of unequal crossing over are presented, and we also discuss evidence for a combination of homogenization mechanisms that drive the concerted evolution of the Lp1 rDNA.

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Bacqué-Cazenave, Julien, Bryce Chung, David W. Cofer, Daniel Cattaert, and Donald H. Edwards. "The effect of sensory feedback on crayfish posture and locomotion: II. Neuromechanical simulation of closing the loop." Journal of Neurophysiology 113, no. 6 (March 15, 2015): 1772–83. http://dx.doi.org/10.1152/jn.00870.2014.

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Neuromechanical simulation was used to determine whether proposed thoracic circuit mechanisms for the control of leg elevation and depression in crayfish could account for the responses of an experimental hybrid neuromechanical preparation when the proprioceptive feedback loop was open and closed. The hybrid neuromechanical preparation consisted of a computational model of the fifth crayfish leg driven in real time by the experimentally recorded activity of the levator and depressor (Lev/Dep) nerves of an in vitro preparation of the crayfish thoracic nerve cord. Up and down movements of the model leg evoked by motor nerve activity released and stretched the model coxobasal chordotonal organ (CBCO); variations in the CBCO length were used to drive identical variations in the length of the live CBCO in the in vitro preparation. CBCO afferent responses provided proprioceptive feedback to affect the thoracic motor output. Experiments performed with this hybrid neuromechanical preparation were simulated with a neuromechanical model in which a computational circuit model represented the relevant thoracic circuitry. Model simulations were able to reproduce the hybrid neuromechanical experimental results to show that proposed circuit mechanisms with sensory feedback could account for resistance reflexes displayed in the quiescent state and for reflex reversal and spontaneous Lev/Dep bursting seen in the active state.

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Bae, Seong-geon, and Myung-jin Bae. "On A New Hybrid Speech Coder using Variables LPF." International Journal of Software Engineering and Its Applications 7, no. 5 (September 30, 2013): 129–36. http://dx.doi.org/10.14257/ijseia.2013.7.5.13.

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Sharma, Aditya, M. C. Shrotriya, Omar Farooq, and Z. A. Abbasi. "Hybrid wavelet based LPC features for Hindi speech recognition." International Journal of Information and Communication Technology 1, no. 3/4 (2008): 373. http://dx.doi.org/10.1504/ijict.2008.024008.

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Zhang, Qianwen, Ting Ma, Ming Zhao, Teppei Tomonobu, and Xiaohong Li. "Direct synthesis of LPG from syngas in a slurry phase." Catalysis Science & Technology 6, no. 5 (2016): 1523–29. http://dx.doi.org/10.1039/c5cy01266j.

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Khominets, V. V., K. A. Nadulich, E. B. Nagorny, A. V. Teremshonok, A. L. Kudyashev, D. V. Averkiev, and A. A. Strelba. "Surgical treatment of military with multilevel lumbar vertebral spondylolysis." Marine Medicine 6, no. 2 (July 21, 2020): 63–73. http://dx.doi.org/10.22328/2413-5747-2020-6-2-63-73.

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Purpose. To demonstrate the effectiveness of an isolated fixation technique of multilevel spondylosis disorders in young patients.Materials and methods. Two military men were operated for multilevel spondylosis of lumbar vertebra (LII, LIV and LIV, LV).Results and discussion. Patients underwent bone autoplasty and osteosynthesis of vertebral arches using hybrid lamina transpedicular system in a screw-rod-hook form. Good anatomic and functional results were got.Conclusion. Avoidance of fixation of intact functional spinal units allows to achieve good treatment results and classify this operation as organ sparing surgery.

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Sidhu, Baldeep S., Justin Gould, Catey Bunce, Mark Elliott, Vishal Mehta, Charles Kennergren, Christian Butter, et al. "The effect of centre volume and procedure location on major complications and mortality from transvenous lead extraction: an ESC EHRA EORP European Lead Extraction ConTRolled ELECTRa registry subanalysis." EP Europace 22, no. 11 (July 20, 2020): 1718–28. http://dx.doi.org/10.1093/europace/euaa131.

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Abstract Aims Transvenous lead extraction (TLE) should ideally be undertaken by experienced operators in a setting that allows urgent surgical intervention. In this analysis of the ELECTRa registry, we sought to determine whether there was a significant difference in procedure complications and mortality depending on centre volume and extraction location. Methods and results Analysis of the ESC EORP European Lead Extraction ConTRolled ELECTRa registry was conducted. Low-volume (LoV) centres were defined as <30 procedures/year, and high-volume (HiV) centres as ≥30 procedures/year. Three thousand, two hundred, and forty-nine patients underwent TLE by a primary operator cardiologist; 17.1% in LoV centres and 82.9% in HiV centres. Procedures performed by primary operator cardiologists in LoV centres were less likely to be successful (93.5% vs. 97.1%; P < 0.0001) and more likely to be complicated by procedure-related deaths (1.1% vs. 0.4%; P = 0.0417). Transvenous lead extraction undertaken by primary operator cardiologists in LoV centres were associated with increased procedure-related major complications including death (odds ratio 1.858, 95% confidence interval 1.007–3.427; P = 0.0475). Transvenous lead extraction locations varied; 52.0% operating room, 9.5% hybrid theatre and 38.5% catheterization laboratory. Rates of procedure-related major complications, including death occurring in a high-risk environment (combining operating room and hybrid theatre), were similar to those undertaken in the catheterization laboratory (1.7% vs. 1.6%; P = 0.9297). Conclusion Primary operator cardiologists in LoV centres are more likely to have extractions complicated by procedure-related deaths. There was no significant difference in procedure complications between different extraction settings. These findings support the need for TLE to be performed in experienced centres with appropriate personnel present.

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Serbaya, Suhail H., Emad H. Abualsauod, Mohammed Salem Basingab, Hatim Bukhari, Ali Rizwan, and Malik Sajjad Mehmood. "Structure and Performance Attributes Optimization and Ranking of Gamma Irradiated Polymer Hybrids for Industrial Application." Polymers 14, no. 1 (December 23, 2021): 47. http://dx.doi.org/10.3390/polym14010047.

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The selection of suitable composite material for high-strength industrial applications, from the list of available alternatives, is a tedious task as it requires an optimized structural performance-based solution. This study aimed to optimize the concentration of fillers, i.e., vinyl tri-ethoxy silane and absorbed gamma-dose, to enhance the properties of an industrial scale polymer, i.e., ultra-high molecular weight polyethylene (UHMWPE). The UHMWPE hybrids, in addition to silane, were treated with (30, 65, and 100 kGy) gamma dose and then tested for ten application-specific structural and performance attributes. The relative importance of attributes based on an 11-point fuzzy conversation was used for establishing the material assessment graph and corresponding adjacency matrix. Afterwards, the normalized values of attributes were used to establish the decision matrix for each alternative. The normalization was performed after the identification of high obligatory valued (HOV) and low obligatory valued (LOV) attributes. After this, suitability index values (SIVs) were calculated for ranking the hybrids that revealed hybrids 65 kGy irradiated the hybrid as the best choice and ranked as first among the existing alternatives. The major responsible factors were higher oxidation strength, a dense cross-linking network, and elongation at break. The values of the aforementioned factors for 65 kGy irradiated hybrids were 0.24, 91, and 360 MPa, respectively, as opposed to 0.54, 75, and 324 MPa for 100 kGy irradiated hybrids, thus placing the latter in second place regarding higher values of Yield Strength and Young Modulus. Finally, it is believed that the reported results and proposed model in this study will improve preoperative planning as far as considering these hybrids for high-strength industrial applications including total joint arthroplasty, textile-machinery pickers, dump trucks lining ships, and harbors bumpers and sliding, etc.

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Acosta-Pazmiño, Iván, Carlos Rivera-Solorio, and Miguel Gijón-Rivera. "Energetic and Economic Analyses of an LCPV/T Solar Hybrid Plant for a Sports Center Building in Mexico." Energies 13, no. 21 (October 30, 2020): 5681. http://dx.doi.org/10.3390/en13215681.

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This study presents a techno-economic performance evaluation of a hybrid low-concentrating photovoltaic/thermal (LCPV/T) plant, which operates in a student sports and wellness center building situated at a university campus in Mexico. The solar plant comprises 144 LCPV/T collectors based on a hybridized version of a local parabolic trough technology. Dynamic thermal and electrical performance analyses were performed in the TRNSYS simulation studio. The results showed that the solar field could cover up to 72% of the hot water demand of the building during the summer season and 24% during the winter season. The hybrid system could annually save 7185 USD, accounting for heat (natural gas boiler) and electricity generation. However, the payback time was of 19.23 years, which was mainly attributed to a reduced natural gas price in Monterrey, Mexico. A new approach to evaluating the equivalent levelized cost of heat (LCOHeq), is proposed. This results in an LCOHeq of 0.065 USD/kWh, which is nearly equivalent to the LCOH of a natural gas-fired boiler (0.067 USD/kWh). Finally, the hybrid plant could achieve a specific CO2e emission reduction of 77.87 kg CO2e per square meter of the required installation area.

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Szabó, Z., Zs Biró, P. Gáspár, and J. Bokor. "Controller scheduling blocks in non-conservative LPV design* *The research has been conducted as part of the project TáMOP-4.2.2.A-11/1/KONV-2012-0012: Basic research for the development of hybrid and electric vehicles. The Project is supported by the Hungarian Government and co-financed by the European Social Fund." IFAC Proceedings Volumes 46, no. 2 (2013): 671–76. http://dx.doi.org/10.3182/20130204-3-fr-2033.00168.

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Baldwin, Fiona, Tim J. Craig, Anna I. Shiel, Timothy Cox, Kyueui Lee, and Jason P. Mansell. "Polydopamine-Lysophosphatidate-Functionalised Titanium: A Novel Hybrid Surface Finish for Bone Regenerative Applications." Molecules 25, no. 7 (March 30, 2020): 1583. http://dx.doi.org/10.3390/molecules25071583.

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Aseptic loosening of total joint replacements (TJRs) continues to be the main cause of implant failures. The socioeconomic impact of surgical revisions is hugely significant; in the United Kingdom alone, it is estimated that £135m is spent annually on revision arthroplasties. Enhancing the longevity of titanium implants will help reduce the incidence and overall cost of failed devices. In realising the development of a superior titanium (Ti) technology, we took inspiration from the growing interest in reactive polydopamine thin films for biomaterial surface functionalisations. Adopting a “one-pot” approach, we exposed medical-grade titanium to a mildly alkaline solution of dopamine hydrochloride (DHC) supplemented with (3S)1-fluoro-3-hydroxy-4-(oleoyloxy)butyl-1-phosphonate (FHBP), a phosphatase-resistant analogue of lysophosphatidic acid (LPA). Importantly, LPA and selected LPA analogues like FHBP synergistically cooperate with calcitriol to promote human osteoblast formation and maturation. Herein, we provide evidence that simply immersing Ti in aqueous solutions of DHC-FHBP afforded a surface that was superior to FHBP-Ti at enhancing osteoblast maturation. The facile step we have taken to modify Ti and the biological performance of the final surface finish are appealing properties that may attract the attention of implant manufacturers in the future.

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Lee, Song-Bi, Young-Jun Jung, Hun-Kook Choi, Ik-Bu Sohn, and Joo-Hyeon Lee. "Hybrid LPG-FBG Based High-Resolution Micro Bending Strain Sensor." Sensors 21, no. 1 (December 22, 2020): 22. http://dx.doi.org/10.3390/s21010022.

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Sensitivity and reliability are essential factors for the practical implementation of a wearable sensor. This study explores the possibility of using a hybrid high-resolution Bragg grating sensor for achieving a fast response to dynamic, continuous motion and Bragg signal pattern monitoring measurement. The wavelength shift pattern for real-time monitoring in picometer units was derived by using femtosecond laser Bragg grating processing on an optical wave path with long-period grating. The possibility of measuring the demodulation system’s Bragg signal pattern on the reflection spectrum of the femtosecond laser precision Bragg process and the long-period grating was confirmed. By demonstrating a practical method of wearing the sensor, the application of wearables was also explored. It is possible to present the applicability of sophisticated micro transformation measurement applications in picometer units.

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Sun, An, and Zhishen Wu. "A Hybrid LPG/CFBG for Highly Sensitive Refractive Index Measurements." Sensors 12, no. 6 (May 30, 2012): 7318–25. http://dx.doi.org/10.3390/s120607318.

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Dobakhshari, Ahmad Salehi, Sadegh Azizi, Mohammad Abdolmaleki, and Vladimir Terzija. "Linear LAV-based state estimation integrating hybrid SCADA/PMU measurements." IET Generation, Transmission & Distribution 14, no. 8 (April 24, 2020): 1583–90. http://dx.doi.org/10.1049/iet-gtd.2019.1850.

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Kivevele, Thomas, Thirunavukkarasu Raja, Vahid Pirouzfar, Budi Waluyo, and Muji Setiyo. "LPG-Fueled Vehicles: An Overview of Technology and Market Trend." Automotive Experiences 3, no. 1 (April 6, 2020): 6–19. http://dx.doi.org/10.31603/ae.v3i1.3334.

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This article presents an overview of the technology status and market trends of LPG-fueled vehicles through the literature approach to re-evaluate their future. In the review, it is discovered that LPG vehicles are globally increasing, though with a concentration in some countries. Of the 25 countries included in the World LPG Association (WLPGA) annual report 2018, Turkey, Poland, India, Ukraine, and Mexico are the countries with the best LPG vehicle trends in average of 23%. Meanwhile, Australia, Japan, South Korea, United Kingdom, the Netherlands, France, and Germany with a long history of implementing LPG as an alternative fuel has experienced a decline in the 2013-2017 period by 17%. This was allegedly due to the penetration of diesel-fueled vehicles over the last ten years. Moreover, developed countries experiencing decline have succeeded in developing electric-based vehicles such as Hybrid Electric Vehicle (HEV), Plug-in hybrid electric vehicle (PHEV), Battery Electric Vehicles (BEV), and Fuel Cell Electric Vehicles (FCEV) due to stringent demands for emission standards.

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Kamble, Jayshree, I. A Pasha, and M. Madhavilatha. "Poly-phase signal generation and optimizationof LPI Radar: A new approach." International Journal of Engineering & Technology 7, no. 2.6 (March 11, 2018): 147. http://dx.doi.org/10.14419/ijet.v7i2.6.10141.

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Low Probability of Intercept (LPI) Radar own certain positive characteristics make them nearly undetectable by Intercept Receivers. In a battle field, this present a considerable strategic problem. New digital receivers required complex signal processing techniques to detect these types of Radar. This paper address the problem of constructing a new hybrid waveform design using Poly-Phase modulation technique to optimize the detection performance of LPI Radar. Phase coded Pulse compression waveforms using Frequency Hopping Spread Spectrum (FHSS) are designed to evaluate the detection performance of LPI radar in terms of Discrimination factor (DF).The difference in DF of the Poly-phase coded and Binary phase coded signals is increasing with the increase in the phase values.The effect of noise on Hybrid Poly-Phase waveforms examined using the signal to noise ratios of -10dB,-15dB and -20dB and extract the parameter necessary for the LPI Radar system.

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Usman, Muhammad, Muhammad Farooq, Muhammad Naqvi, Muhammad Wajid Saleem, Jafar Hussain, Salman Raza Naqvi, Shahzaib Jahangir, Hafiz Muhammad Jazim Usama, Saad Idrees, and Anthony Anukam. "Use of Gasoline, LPG and LPG-HHO Blend in SI Engine: A Comparative Performance for Emission Control and Sustainable Environment." Processes 8, no. 1 (January 6, 2020): 74. http://dx.doi.org/10.3390/pr8010074.

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The rising global warming concerns and explosive degradation of the environment requires the mainstream utilization of alternative fuels, such as hydroxy gas (HHO) which presents itself as a viable substitute for extracting the benefits of hydrogen. Therefore, an experimental study of the performance and emission characteristics of alternative fuels in contrast to conventional gasoline was undertaken. For experimentation, a spark ignition engine was run on a multitude of fuels comprising of gasoline, Liquefied petroleum gas (LPG) and hybrid blend of HHO with LPG. The engine was operated at 60% open throttle with engine speed ranging from 1600 rpm to 3400 rpm. Simultaneously, the corresponding performance parameters including brake specific fuel consumption, brake power and brake thermal efficiency were investigated. Emission levels of CO, CO2, HC and NOx were quantified in the specified speed range. To check the suitability of the acquired experimental data, it was subjected to a Weibull distribution fit. Enhanced performance efficiency and reduced emissions were observed with the combustion of the hybrid mixture of LPG with HHO in comparison to LPG: on average, brake power increased by 7% while the brake specific fuel consumption reduced by 15%. On the other hand, emissions relative to LPG decreased by 21%, 9% and 21.8% in cases of CO, CO2, and unburned hydrocarbons respectively. Incorporating alternative fuels would not only imply reduced dependency on conventional fuels but would also contribute to their sustainability for future generations. Simultaneously, the decrease in harmful environmental pollutants would help to mitigate and combat the threats of climate change.

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Khrykina, Т. A., and E. A. Dolmatov. "RESULTS OF STEP CROSSES IN SELECTION OF PEAR DWARFISM DONORS." Pomiculture and small fruits culture in Russia 64 (March 30, 2021): 40–45. http://dx.doi.org/10.31676/2073-4948-2021-64-40-45.

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The article presents the results of 20 years of research on the implementation of a project to create pear varieties and complex donors of monogenously determined dwarfism (gene D) with high winter hardiness, group resistance to fungal diseases — scab (Venturia pirina Aderh., brownish (Entomosporium maculatum Lev.) and Septoria (Septoria piricola Desm.) and bright red color of fruits (gene C). The research was conducted according to generally accepted methods in the pear breeding gardens of Russian Research Institute for Fruit Crop Breeding in 2000-2019. The study objects were populations of hybrid pear seedlings obtained from targeted crosses of highly adaptive forms and hybrids of pears with descendants of the 4th generation of the Karlikovaya Zelyonaya variety (Nain Vert), heterozygous for the dwarfism gene (Dd) in the first stage, and hybrid seedlings from crossing a DK-2 donor with sources of good fruit taste in the second stage. The aim of the research was to identify winter-hardy complex donors of dwarfism for further use in breeding programs for the creation of intensive pear varieties. Seedlings were grown using conventional technology in a breeding garden on a plot with dark gray forest soil. As a result of research for further use in breeding as complex donors of dwarfism, winter hardiness, group resistance to fungal diseases and red color of fruits, 3 forms were selected in the second stage of crosses (DK-1-6-57, DK-1-674, DK-1-4-38). Their use in long-term innovative breeding programs for the creation of intensive pear varieties will allow to conduct rejections at the early stages of ontogenesis and thereby to reduce the volume of hybrid families by 2-4 times. These complex donors are briefly characterized.

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Pan, Jiongshen, Tiansheng Huang, Yuchen Ge, Wenfu Lin, and Li-Peng Sun. "Highly Birefringent Microfiber Hybrid Interferometer Sensor." IEEE Photonics Technology Letters 33, no. 17 (September 1, 2021): 959–62. http://dx.doi.org/10.1109/lpt.2021.3100366.

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Testa, Genni, Yujian Huang, Luigi Zeni, Pasqualina M. Sarro, and Romeo Bernini. "Hybrid Silicon-PDMS Optofluidic ARROW Waveguide." IEEE Photonics Technology Letters 24, no. 15 (August 2012): 1307–9. http://dx.doi.org/10.1109/lpt.2012.2202645.

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Park, Hyundai, Alexander W. Fang, Oded Cohen, Richard Jones, Mario J. Paniccia, and John E. Bowers. "A Hybrid AlGaInAs–Silicon Evanescent Amplifier." IEEE Photonics Technology Letters 19, no. 4 (2007): 230–32. http://dx.doi.org/10.1109/lpt.2007.891188.

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Hui-Wen Chen, Ying-Hao Kuo, and J. E. Bowers. "A Hybrid Silicon–AlGaInAs Phase Modulator." IEEE Photonics Technology Letters 20, no. 23 (December 2008): 1920–22. http://dx.doi.org/10.1109/lpt.2008.2004790.

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Srinivasan, Sudharsanan, and John E. Bowers. "Integrated High Sensitivity Hybrid Silicon Magnetometer." IEEE Photonics Technology Letters 26, no. 13 (July 2014): 1321–24. http://dx.doi.org/10.1109/lpt.2014.2322576.

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Pei, Chongyang, Longzhi Yang, Gencheng Wang, Yuehai Wang, Xiaoqing Jiang, Yinlei Hao, Yubo Li, and Jianyi Yang. "Broadband Graphene/Glass Hybrid Waveguide Polarizer." IEEE Photonics Technology Letters 27, no. 9 (May 1, 2015): 927–30. http://dx.doi.org/10.1109/lpt.2015.2398452.

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Tian, Zhen-Nan, Xiao-Wen Cao, Wen-Gang Yao, Pei-Xin Li, Yan-Hao Yu, Gen Li, Qi-Dai Chen, and Hong-Bo Sun. "Hybrid Refractive–Diffractive Optical Vortex Microlens." IEEE Photonics Technology Letters 28, no. 21 (November 1, 2016): 2299–302. http://dx.doi.org/10.1109/lpt.2016.2591238.

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DiResta, G. R., J. W. Kiel, G. L. Riedel, P. Kaplan, and A. P. Shepherd. "Hybrid blood flow probe for simultaneous H2 clearance and laser-Doppler velocimetry." American Journal of Physiology-Gastrointestinal and Liver Physiology 253, no. 4 (October 1, 1987): G573—G581. http://dx.doi.org/10.1152/ajpgi.1987.253.4.g573.

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To perform two independent regional blood flow measurements in tissue volumes of similar dimensions, we designed a hybrid blood flow probe capable of measuring regional perfusion by both laser-Doppler velocimetry (LDV) and H2 clearance. The probe consisted of two fiber-optic light guides to conduct light between the surface of tissue of interest and a laser-Doppler blood flowmeter. Also contained within the probe were a platinum 25-microns H2-sensing electrode and a 125-microns H2-generating electrode. The probe can thus be used to measure local perfusion with H2 clearance. The H2 can either be inhaled or can be generated electrochemically at the locus of interest. Evaluation of the probe in the canine gastric mucosa indicated 1) that the relationship between mucosal flow measurements made simultaneously with H2 clearance and LDV was highly significant and linear and 2) that H2 clearance could potentially be used to calibrate the laser-Doppler blood flowmeter in absolute units. The methods of constructing the flow probes are discussed in detail.

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Khromykh, N. O., Y. V. Lykholat, A. A. Anishchenko, O. O. Didur, A. A. Gaponov, A. M. Kabar, and T. Y. Lykholat. "Cuticular wax composition of mature leaves of species and hybrids of the genus Prunus differing in resistance to clasterosporium disease." Biosystems Diversity 28, no. 4 (November 7, 2020): 370–75. http://dx.doi.org/10.15421/012047.

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The interaction of a host plant with pathogen implies an extremely complex process involving the outer waxy layer of the cuticle, cutin, cell membrane, and intracellular structures. However, the initial contact between plants and pathogens takes place in cuticular waxes covering the surface of leaves, stems and fruits. Despite many findings on the role of plant epicuticular waxes, there is a gap in the understanding of the relationship between individual compounds and their functions. The pathogenic fungus Clasterosporium carpohilum (Lev.) Aderh. parasitizes the tissues of many stone fruit trees, damaging leaf and fruit surface. The aim of this work was to find out if the quantity and composition of leaf epicuticular wax could be responsible for the resistance to clasterosporium disease. The study of differences of plants in fungal resistance was carried out on species and hybrids of the genus Prunus from the collection of the Botanical Garden of Oles Honchar Dnipro National University (Dnipro city, Ukraine). The chloroform extracts of epicuticular waxes from the surface of mature leaves were analyzed by gas chromatography connected to mass-spectrometry. GC/MS assay was performed using Shimadzu GCMS-QP 2020 El equipped with capillary column (5% diphenyl/95% dimethyl polysiloxane), and helium as a carrier gas. Mass Spectrum Library 2014 for GSMS was used to identify the separated compounds of the wax extracts. The maximum total wax amount on the adaxial and abaxial leaf surface of hybrid 2 was twice the minimum wax accumulation for hybrid 4. Overall, 20 individual compounds belonging to six hydrocarbon classes were identified. Leaf epicuticular wax composition both in Prunus persica (L.) Batsch and P. dulcis (Mill.) D. A. Webb, and hybrids was dominated by long-chain n-alkanes with even carbon number (77.6–90.9% of total sum). The alkenes’ class was represented only by 17-pentatriacontene detected in the wax of both Prunus species. Octadecanaldehyde was found in epicuticular wax of P. dulcis while absent in wax of the more resistant species P. persica. Prime alcohols 1-tetradecanol and 1-hexacosanol were detected in leaf waxes of hybrid 4 and P. dulcis respectively. The ester class contained seven compounds found in leaf epicuticular waxes of both plant species and all hybrid forms. The identification of phthalic acid esters in leaf wax extracts was unexpected, and the phthalates’ origin is discussed. Strong positive correlation between leaf damage and tetrapentacontane content in epicuticular waxes could presumably be the result of infection-induced metabolism reprogramming in epidermal cells of infected leaves.

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Blue, Andrew, M. French, P. Seller, and V. O’Shea. "Edgeless sensor development for the LPD hybrid pixel detector at XFEL." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 607, no. 1 (August 2009): 55–56. http://dx.doi.org/10.1016/j.nima.2009.03.114.

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Journal articles on the topic 'Hybrid LPV'

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