Relevant bibliographies by topics / Optimize the amount of dopant

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Academic literature on the topic 'Optimize the amount of dopant'

Author: Grafiati
Published: 5 June 2025
Last updated: 1 August 2025

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Journal articles on the topic "Optimize the amount of dopant"

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Paraguay-Delgado, Francisco, Abel Hurtado-Macias, and Oscar Solis-Canto. "Zn dopant effect on growth, morphology, texture and mechanical properties of SnO2 thin films." Superficies y Vacío 31, no. 1 (2018): 16–25. http://dx.doi.org/10.47566/2018_syv31_1-010016.

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When tin oxide thin film is doped with Zn, it grows textured and improves its mechanical properties. The material was synthesized on alkali-free borosilicate glass substrates by spray pyrolysis technique. The elemental composition was determined by X-ray energy dispersive spectroscopy and X-ray photoelectron spectroscopy. The morphology and microstructure of films were examined by electron microscopy techniques, they shown different shapes of crystalline particles according to the dopant content. From X-ray diffraction patterns processed by Rietveld refinement methodology was determine lattice
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Kimi, Melody, Leny Yuliati, and Mustaffa Shamsuddin. "Synergetic Effect of In and Ag Co-Doped ZnS for Enhanced Photocatalytic Hydrogen Evolution under Visible Light Irradiation." Advanced Materials Research 1024 (August 2014): 368–71. http://dx.doi.org/10.4028/www.scientific.net/amr.1024.368.

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In and Ag co-doped ZnS photocatalysts were successfully prepared by hydrothermal method to extend the light absorption of ZnS to the visible light region. The concentration of In was constant while for Ag was varied to optimize the photocatalytic activity. The In and Ag co-doped ZnS photocatalysts showed smaller band gap energy compared to single doped In (0.1)-ZnS and undoped ZnS. The photocatalytic activity of In and Ag co-doped ZnS photocatalysts was evaluated from the amount of hydrogen produced. The hydrogen evolution rate from aqueous solution containing Na2SO3 and Na2S as sacrificial re
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Rajaramanan, Tharmakularasa, Fatemeh Heidari Gourji, Dhayalan Velauthapillai, Punniamoorthy Ravirajan, and Meena Senthilnanthanan. "Enhanced Photovoltaic Properties of Dye-Sensitized Solar Cells through Ammonium Hydroxide-Modified (Nitrogen-Doped) Titania Photoanodes." International Journal of Energy Research 2023 (February 3, 2023): 1–12. http://dx.doi.org/10.1155/2023/1090174.

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Doping is a unique strategy to modulate the optical and electronic properties of semiconducting materials. This study reports a facile approach to fabricate nitrogen-doped TiO2 (N-doped TiO2) photoanode for DSSC application. A solid-state reaction was employed to synthesize a series of N-doped TiO2 nanoparticles with different volumetric ratios of nitrogen dopant and the TiO2 host. The NH4OH as a nitrogen dopant was combined with P25-TiO2 via grinding followed by calcination at 500°C. The synthesized nanoparticles were extensively characterized by XRD, XPS, EDX, SEM, and TEM techniques. XRD re
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Luong, Van Duong, Wen Tao Zhang, and Hong Ro Lee. "Synthesis of Sr2Si5N8:Eu2+ Phosphor for Enhanced Red Emission." Advanced Materials Research 233-235 (May 2011): 2705–9. http://dx.doi.org/10.4028/www.scientific.net/amr.233-235.2705.

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For removing impurities to improve luminescence properties, Eu2+- activated Sr2Si5N8 red phosphor for white light-emitting diodes (LEDs) was prepared by multiple heat-treatment synthesis which includes carbothermal reduction and nitridation. The X-ray diffraction (XRD) patterns were showed the standard single phase of Sr2Si5N8. With an optimized amount of Eu2+ (2 at. %) dopant, the broad excitation band of Sr2Si5N8:Eu2+ indicated that the phosphor was suitable for application of white LEDs with UV or blue chip, and red emission peak at 628 nm in spectra originating from the 4f65d1→4f7 transiti
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Liu, Changqing, Chenggang Xu, Wanting Wang, Long Chen, Xu Li, and Yuanting Wu. "Oxygen Vacancy Mediated Band-Gap Engineering via B-Doping for Enhancing Z-Scheme A-TiO2/R-TiO2 Heterojunction Photocatalytic Performance." Nanomaterials 13, no. 5 (2023): 794. http://dx.doi.org/10.3390/nano13050794.

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Fabrication of Z-scheme heterojunction photocatalysts is an ideal strategy for solving environmental problems by providing inexhaustible solar energy. A direct Z-scheme anatase TiO2/rutile TiO2 heterojunction photocatalyst was prepared using a facile B-doping strategy. The band structure and oxygen-vacancy content can be successfully tailored by controlling the amount of B-dopant. The photocatalytic performance was enhanced via the Z-scheme transfer path formed between the B doped anatase-TiO2 and rutile-TiO2, optimized band structure with markedly positively shifted band potentials, and the s
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Dai, Wanlei, Zhaoyi Jiang, Yali Sun, et al. "Synergistic Defect Management for Boosting the Efficiency of Cu(In,Ga)Se2 Solar Cells." Coatings 14, no. 2 (2024): 164. http://dx.doi.org/10.3390/coatings14020164.

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In this study, a feasible strategy is proposed for directly depositing high-quality Cu(In,Ga)Se2 (CIGS) films using Na-doped targets in a selenium-free atmosphere to boost the power conversion efficiency (PCE) of CIGS solar cells. Introducing a small amount of sodium dopant effectively promoted the textured growth of CIGS crystals in the prepared films, resulting in larger grain sizes and a smoother interface. The higher MoSe2 content at the CIGS/Mo interface increased the carrier lifetime in the films. In addition, sodium doping increased the proportion of Se atoms on the film surface and red
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Zhang, Jinying, Yexiaotong Zhang, Zhongwei Gao, Jiaxing Yang, and Xinye Wang. "Solvent Evaporation-Induced Self-Assembly of Flexible Cholesteric Liquid Crystal Elastomers: Fabrication, Performance Tuning, and Optimization." Materials 18, no. 9 (2025): 1927. https://doi.org/10.3390/ma18091927.

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The realization of broad-wavelength tunability of the structural color in Double layered Cholesteric Liquid Crystal Elastomers (DCLCEs), along with good flexibility and processability, presents a significant challenge. This research introduces a facile and effective fabrication technique, Solvent Evaporation-Induced Self-Assembly (SEISA), for the production of DCLCEs exhibiting broad wavelength tunability, superior flexibility, and robust mechanical characteristics. Focusing on initial color tuning, bubble defect minimization, UV photopolymerization, and coating procedures, this research syste
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Sacco, Olga, Diana Sannino, Mariantonietta Matarangolo, and Vincenzo Vaiano. "Room Temperature Synthesis of V-Doped TiO2 and Its Photocatalytic Activity in the Removal of Caffeine under UV Irradiation." Materials 12, no. 6 (2019): 911. http://dx.doi.org/10.3390/ma12060911.

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In this work, the influence of simple acids in the room temperature sol-gel synthesis of TiO2 was investigated and the efficiency of prepared photocatalysts was evaluated in the removal of caffeine. To improve the photoactivity of TiO2, vanadium-doped TiO2 (VTiO2) samples were obtained starting from different amount of vanadyl sulphate as a dopant source. The samples were centrifuged, washed and finally dried at room temperature, and no calcination step was carried out. The prepared photocatalysts were characterized by different techniques (X-ray powder diffraction (XRD), specific surface area
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Slepičková Kasálková, Nikola, Petr Slepička, Barbora Ivanovská, et al. "Plasma-Activated Polyvinyl Alcohol Foils for Cell Growth." Coatings 10, no. 11 (2020): 1083. http://dx.doi.org/10.3390/coatings10111083.

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Hydrogels, and not only natural polysaccharide hydrogels, are substances capable of absorbing large amounts of water and physiological fluids. In this study, we set out to optimize the process for preparing polyvinyl alcohol (PVA) hydrogels. Subsequently, we doped PVA foils with cellulose powder, with poly(ethylene glycol) (PEG) or with gold nanoparticles in PEG colloid solutions (Au). The foils were then modified in a plasma discharge to improve their biocompatibility. The properties of PVA foils were studied by various analytical methods. The use of a suitable dopant can significantly affect
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Jaggi, Chinky, Pankaj Kumar, and Praveen Malik. "Studies of Electro-Optic and Thermal Behaviour of Azo Dye Doped Vertically Aligned Liquid Crystal." ECS Transactions 107, no. 1 (2022): 163–69. http://dx.doi.org/10.1149/10701.0163ecst.

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The performance of liquid crystal (LC) display devices significantly depends on the usage of an optimized concentration of dopant. Thus, in the present study, vertically aligned liquid crystals (VALCs) display cells were prepared using dispersion of zinc oxide (ZnO) nano particles into host nematic liquid crystal (NLC) without any surface treatment. Further, the sample mixture was doped with fixed concentration of 0.5% of azo dye. Both the sample cells were analyzed and compared for morphological, electro-optical (E-O) and thermal behaviour. Results show the improvement in voltage-transmittanc
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Books on the topic "Optimize the amount of dopant"

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Lynch, Tara A., and Loralei L. Thornburg. General Approach to Pregnancy Care in the Neurologic Patient. Edited by Emma Ciafaloni, Cheryl Bushnell, and Loralei L. Thornburg. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780190667351.003.0001.

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Caring for the obstetric patient with significant medical problems can be complex. Neurologic diseases in pregnancy can range in severity and therefore vary in the amount of care planning that is required. Certain diseases will require more coordination of care with multidisciplinary teams than others. In these cases, the use of care maps or guidelines can assist practitioners with providing comprehensive care. This chapter will serve as an overview of pregnancy-specific considerations that will be reviewed in subsequent chapters throughout this book. Overall, by focusing attention to the spec
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Rakhit, A. K. Heat Treatment of Gears. ASM International, 2000. http://dx.doi.org/10.31399/asm.tb.htgpge.9781627083478.

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Heat Treatment of Gears: A Practical Guide for Engineers describes the processes and procedures used to harden alloy steel gears and explains how to optimize benefits, such as improved fatigue life, while minimizing distortion and costs. The first few chapters familiarize readers with the basic concepts of heat treating and its effect on the composition, structure, and properties of iron-carbon alloys. The chapters that follow compare and contrast the heat treatments typically used for gears, including through hardening, induction hardening, carburizing, nitriding, and carbonitriding. Carburiz
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Brooks, Charlie R. Principles of the Heat Treatment of Plain Carbon and Low Alloy Steels. ASM International, 1996. http://dx.doi.org/10.31399/asm.tb.phtpclas.9781627083539.

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Principles of the Heat Treatment of Plain Carbon and Low Alloy Steels provides readers with a working knowledge of heat treat processes and how they can be tailored to optimize the microstructure and properties of steel. The book includes chapters on quenching, tempering, austenitization, and annealing as well as hardenability, modeling, and common treatments for structural steels. The first few chapters lay essential groundwork for understanding how time, temperature, and prior processing history influence the formation of Fe-C phases and the composition and morphology of the microconstituent
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Queiroz, Sabrina. Mapas Mentais - Um novo conceito. Brazil Publishing, 2020. http://dx.doi.org/10.31012/978-65-5861-148-6.

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This manual was created with the main objective of providing a study option for students who have the need to grasp a large amount of content in a short time, besides allowing the teacher to pass the desired content in a more objective and visual way. The whole method developed in the research entitled "Mind Maps – A new concept" offers the student a significant means of study, and the teacher a more dynamic and effective form of teaching. Students which want to get a place at University or specific schools, for instance, need to learn a lot of content in a short time, which causes the need to
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Book chapters on the topic "Optimize the amount of dopant"

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Takigawa, Yorinobu, Tokuteru Uesugi, and Kenji Higashi. "Effect of Small Amount of Dopant on Phase Stability of Zirconia Bioceramics." In Materials Science Forum. Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-462-6.1561.

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Kheyroddin, Ali, Shakiba Raygan, and Mahdi Kioumarsi. "Optimizing Corbel Reinforcement Through Nonlinear Analysis: Determining Superiority of Steel Bars or CFRP." In Lecture Notes in Civil Engineering. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-69626-8_125.

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AbstractThis study aims to optimize the carbon fiber-reinforced polymer’s (CFRP) arrangements rather than the amount of secondary steel reinforcements for strengthening reinforced concrete (RC) corbels, utilizing finite element (FE) analysis. While previous studies have only examined different types of FRP sheet arrangement in the absence or presence of equal amount of secondary steel reinforcements, this research fills a gap by comparing the effect of different configurations with the Externally Bonded Reinforcement (EBR) installation method and increasing the amount of the secondary steel re
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Pomè, Alice Paola, Chiara Tagliaro, and Andrea Ciaramella. "Sustainable Workplace: Space Planning Model to Optimize Environmental Impact." In The Urban Book Series. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-29515-7_15.

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AbstractThe construction sector is one of the main sources of environmental degradation in the world. Data demonstrates that commercial assets are the most intensive consumers of resources. Among those, the largest amount of buildings’ emissions comes from office building operations. Buildings’ impact on the environment does not depend only on energy and material consumptions; but several studies demonstrate that sustainable savings could be achieved through occupants’ trainings. To develop a model for assessing the sustainable performance of office buildings which accounts also for occupants’
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Shahbazi, Sasha, Patricia van Loon, Martin Kurdve, and Mats Johansson. "Metal and Plastic Recycling Flows in a Circular Value Chain." In Towards a Sustainable Future - Life Cycle Management. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-77127-0_18.

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AbstractMaterial efficiency in manufacturing is an enabler of circular economy and captures value in industry through decreasing the amount of material used to produce one unit of output, generating less waste per output and improving waste segregation and management. However, material types and fractions play an important role in successfulness of recycling initiatives. This study investigates two main fractions in automotive industry, namely, metal and plastic. For both material flows, information availability and standards and regulations are pivotal to increase segregation, optimize the co
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Meneghello, Francesca, Massimo Coletti, Debora Di Marco, Massimiliano Ronzani, Chiara Di Francescomarino, and Chiara Ghidini. "Analysing and Improving Business Processes Through Hybrid Simulation Model: A Case Study." In Lecture Notes in Business Information Processing. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-82225-4_39.

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Abstract The increasing amount of process execution data, i.e. the event logs stored by the company, can be exploited using Business Process Simulation (BPS). BPS serves as a valuable tool for business analysts, enabling them to analyze and compare business processes and identify changes that optimize key performance measures. Especially when evaluating alternative scenarios, it is crucial to start with an accurate simulation of the current process. Recent research in the field of BPS has demonstrated that Hybrid Simulation Model (HSM) approaches reliably replicates business process behaviour,
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Zhang, Jianchao, Le Wang, and Haitao Ren. "A Review of Oscillating Buoy Devices in Wave Energy Power Generation." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-9184-2_46.

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AbstractEscalating energy demands and dramatic changes in global climate present a formidable challenge. As a clean, renewable, and unexploited large-scale energy source, ocean wave energy has attracted research attentions all over the world. Although the existing theoretical technologies of wave energy power generation are emerging rapidly, few of them can be applied to massive practical deployment. The current achievements of wave energy resources are reviewed in this paper; various forms and energy transmission modes of oscillating buoy wave energy converters are summarized, and their chara
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Nagasawa, Keisuke, Katsumi Morikawa, and Katsuhiko Takahashi. "Sustainable Sugarcane Supply Chain Network Design with Multiple Capacity Candidate in Facility Units." In Lecture Notes in Mechanical Engineering. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-93891-7_82.

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Abstract The sugarcane supply chain is rapidly gaining attention because unstable and rising fossil fuel prices, environmental limitations, and the energy needs of growing economies in developing countries are driving demand for clean, renewable energy. Bioenergy continues to attract attention from researchers because of its various advantages over other renewable energy sources. This paper developed a mixed-integer linear programming model (MILP) to design a sustainable sugarcane-based bioenergy supply chain network to optimize a facility location and transportation flow amount for decision v
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Décieux, Jean Philippe. "Is There More Than the Answer to the Question? Device Use and Completion Time as Indicators for Selectivity Bias and Response Convenience in Online Surveys." In IMISCOE Research Series. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-67498-4_17.

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AbstractThe main objective of the German Emigration and Remigration Panel Study (GERPS) is to establish a longitudinal data set that provides information on life trajectories of international migrants. However, a large amount of paradata were also collected in order to obtain meta-information on respondents’ survey participation. This auxiliary information can help to optimize data quality at all stages of the survey process. By continuing the existing discussion in the field of online surveys, this chapter pursues a twofold objective: it reflects device usage (mobile vs. computer) and elucida
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Panin, Sergey V., Lyudmila A. Kornienko, Nguyen Duc Anh, Vladislav O. Alexenko, Dmitry G. Buslovich, and Svetlana A. Bochkareva. "Three-Component Wear-Resistant PEEK-Based Composites Filled with PTFE and MoS2: Composition Optimization, Structure Homogenization, and Self-lubricating Effect." In Springer Tracts in Mechanical Engineering. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-60124-9_13.

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AbstractThe aim of this work was to design and optimize compositions of three-component composites based on polyetheretherketone (PEEK) with enhanced tribological and mechanical properties. Initially, two-component PEEK-based composites loaded with molybdenum disulfide (MoS2) and polytetrafluoroethylene (PTFE) were investigated. It was shown that an increase in dry friction mode tribological characteristics in metal-polymer and ceramic-polymer tribological contacts was attained by loading with lubricant fluoroplastic particles. In addition, molybdenum disulfide homogenized permolecular structu
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Casimiro-Martínez, Hemelin. "Proposed guide to optimize accounts receivable through the DSO indicator (Average Collection Days) case study Fiscal, Accounting and Administrative Office Hernández, 2023." In The challenges of financial support in the face of a new world economic order. ECORFAN, 2024. http://dx.doi.org/10.35429/h.2024.1.74.87.

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Optimizing accounts receivable with the support of the calculation of the indicator procedure to know the exact amount of unpaid receivables, facilitates the obligation of taxpayers in a timely manner. Optimize accounts receivable using the DSO indicator to contribute to the improvement of the firm's accounting and administrative processes. Implement a guide to optimize accounts receivable favourable to have an effective control of the debtor clients helping the accounting record to make the collection more efficient.
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Conference papers on the topic "Optimize the amount of dopant"

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Qiu, Kang, Sigmund Eggen Holm, Julian Straus, and Simon Roussanaly. "Optimal Clustered, Multi-modal CO2 Transport Considering Non-linear Costs � a Path-planning Approach." In Foundations of Computer-Aided Process Design. PSE Press, 2024. http://dx.doi.org/10.69997/sct.150076.

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An important measure to achieve global reduction in CO2 emissions is CO2 capture, transport, and storage. The deployment of CO2 capture requires the development of a shared CO2 transport infrastructure, where CO2 can be transported with different transport modes. Furthermore, the cost of CO2 transport can be subject to significant economies of scale effects with respect to the amount of CO2 transported, also mentioned as clustering effects. Therefore, optimizing the shared infrastructure of multiple CO2 sources can lead to significant reductions in infrastructure costs. This paper presents a n
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Fuentes, R. E., B. J. Wiersma, K. D. Boomer, and A. J. Kim. "Inhibition of Pitting Corrosion in Simulated Liquid Radioactive Waste." In CORROSION 2017. NACE International, 2017. https://doi.org/10.5006/c2017-09689.

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Abstract The Hanford Site in Richland, WA stores liquid radioactive waste in underground, carbon steel tanks. The tanks have a well-defined chemistry control program for the prevention of stress corrosion cracking, general corrosion and pitting of the steel that is exposed to the waste. The primary aggressive species active in the localized mechanism is nitrate, while hydroxide and nitrite are utilized to inhibit these mechanisms. Recent tests suggested that the corrosion control program requirements may be optimized so that the total amount of inhibitor necessary may be reduced. Secondly, fut
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Smith, S. N., and H. R. Hanson. "Design of Cathodic Protection for Deep-Water Offshore Structures." In CORROSION 1987. NACE International, 1987. https://doi.org/10.5006/c1987-87075.

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Abstract As the offshore production of oil and gas shifts to deeper and colder waters throughout the world, the design criteria for cathodic protection systems developed from the broad experience base in shallow water in the Gulf of Mexico become less reliable. Several factors that increase the amount of cathodic protection required to control corrosion change with water depth and temperature. The lower-temperature waters found in the North Sea, Australia, and at great depths have higher resistance, which decreases the current output from the anodes. The solubility of calcium carbonate, one of
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Nguyen, Thu, Jacob Giacomi, and Vilupanur Ravi. "Electrochemical Evaluation of Novel Titanium Alloys." In CORROSION 2020. NACE International, 2020. https://doi.org/10.5006/c2020-15208.

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Abstract To increase the longevity and to optimize the performance of biomedical implants, a class of β-titanium alloys, specifically Ti-Nb-Zr (TNZ) is being explored. TNZ alloys demonstrate advantageous properties including non-toxicity, biocompatibility and low elastic moduli. Moreover, previous studies have shown that the addition of trace amounts of boron (0.01- 1 wt%) in conventional titanium alloys increases the tensile strength and corrosion resistance of the alloys. The objective of this study was to investigate the corrosion behavior of UNS R58130 (Ti-13Nb-13Zr or Ti1313) as well as T
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Jin, Peng, Carlos M. Menendez, Zhengwei Liu, and Sunder Ramachandran. "Impact of CO2 Partial Pressure on Electrochemical Measurements at High Temperatures." In CORROSION 2020. NACE International, 2020. https://doi.org/10.5006/c2020-14584.

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Abstract Laboratory testing of corrosion inhibitors under high temperature high pressure (HTHP) conditions is challenging. HTHP testing has been traditionally performed in closed systems with fixed liquid/gas volume and testing results are usually influenced/compromised by the accumulation of ferrous ions and corrosion products. The aim of the work is to optimize corrosion inhibitor testing conditions at HTHP to generate results of better reliability. The corrosion of carbon steel by CO2 at HTHP was assessed using small working electrodes of large liquid volume-to-sample surface area in autocl
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Hoots, J. E., B. E. Moriarty, B. F. Pesigan, and J. P. Rasimas. "Latest Methods of Performance Optimization and Control in Cooling Water." In CORROSION 2001. NACE International, 2001. https://doi.org/10.5006/c2001-01448.

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Abstract New methods for monitoring scale and corrosion inhibiting water treatment programs have been developed. These methods utilize two new generations of fluorescence monitoring/control equipment that represent significant advancements in this area and include a variety of fluorescence techniques to measure treatment actives. System consumption of actives is defined as the difference between amount of actives added and remaining in the system. Consumption measurements determine changes in the actual operating system (not a simulated, small portion of the system). Changes in consumption of
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Toba, K., H. Ishimoto, Y. Murakami, T. Asotani, and T. Uegaki. "A New Approach to Prevent Corrosion of the Reactor Effluent System in HDS Units." In CORROSION 2003. NACE International, 2003. https://doi.org/10.5006/c2003-03653.

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Abstract In recent years, unexpected incidents of corrosion caused by chlorides have increased presumably because many refiners diversify the crude oils to be processed. The problems associated with chlorides are not limited to a crude distillation unit. Chlorides can be carried over downstream by being entrained in feed stock for each unit. In the case of a hydroprocessing unit, the chloride corrosion is usually caused by deposition of ammonium chloride (NH4Cl) especially at the reactor effluent air cooler (REAC) and associated piping. In our new gas oil deep hydrodesulfurization (HDS) unit a
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Li, Bryan, Isaac Severinsen, Wei Yu, Timothy Walmsley, and Brent Young. "Twin Roll Press Washer Blockage Prediction: A Pulp and Paper Plant Case Study." In The 35th European Symposium on Computer Aided Process Engineering. PSE Press, 2025. https://doi.org/10.69997/sct.185260.

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The pulp and paper industry has significant potential to reduce its carbon footprint by optimizing energy and water usage, contributing to global efforts toward net-zero emissions. A critical unit operation in this industry is pulp washing using twin roll press washers, which enhance pulp quality. The filtrate from this unit operation can be concentrated and combusted to generate a significant amount of energy for the plant and nearby industries. However, these washers are prone to blockages that disrupt production and decrease energy efficiency. Despite their importance, models for managing b
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Cheung, Catherine, Nikita Fenev, and Julio Valdés. "Feature Selection and Gamma Test for Improved Load Estimation Models." In Vertical Flight Society 81st Annual Forum and Technology Display. The Vertical Flight Society, 2025. https://doi.org/10.4050/f-0081-2025-235.

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Helicopter load monitoring and other health and usage monitoring system applications regularly involve large datasets and machine learning models. The amount of effort that could be devoted to training an optimal solution could be unlimited and quickly becomes prohibitive. However, there are important analyses and tools that could be implemented upfront to expedite finding well performing models as well as providing insight into the black-box machine learning models. In this work, we explore the use of the Gamma test and feature selection techniques to optimize input parameter sets and reduce
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Medrano, Carolina, Michael Ewart, Ivan Biaggio, Roland Ryf, and Peter Günter. "Near Infrared Photorefraction In Reduced Rh-Doped KNbO3." In The European Conference on Lasers and Electro-Optics. Optica Publishing Group, 1998. http://dx.doi.org/10.1364/cleo_europe.1998.cfe5.

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Potassium niobate (KNbO3) remains the subject of considerable interest for several applications involving the photorefractive effect. During the past, materials development efforts have focused on increasing the sensitivity at near-infrared wavelengths and on decreasing the photorefractive response time1,2. The main approach to optimize near-infrared sensitivity has been the introduction of suitable dopants in the energy band gap to provide impurity centers necesary for photoexcitation. Rh was selected among a group of dopants as the most efficient impurity to increase the photorefractive sens
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Reports on the topic "Optimize the amount of dopant"

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Sirivat, Anuvat, and Ladawan Ruangchuay. Preparation and characterization of polypyrrole film for chemical vapor sensor applications. Chulalongkorn University, 2001. https://doi.org/10.58837/chula.res.2001.82.

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Polypyrrole (PPy) was chemically prepared via an in situ doped polymerization utilizing seven dopant anions (dopant to monomer molar ratio, D/M = 1/12) to stabilize the positive charges on N of pyrrole rings. These dopant anions were found to play important roles on physical, chemical, and electrical properties of PPy as revealed by several techniques, e.g. X-ray photoelectron spectrometer and the custom-made four-point probe conductivity meter. PPys doped with alpha-naphthalene sulfonate (PPy/A) and beta-naphthalene sulfonate (PPy/B) have good pellet appearance, solubility, thermal stability,
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Rigotti, Christophe, and Mohand-Saïd Hacid. Representing and Reasoning on Conceptual Queries Over Image Databases. Aachen University of Technology, 1999. http://dx.doi.org/10.25368/2022.89.

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The problem of content management of multimedia data types (e.g., image, video, graphics) is becoming increasingly important with the development of advanced multimedia applications. Traditional database management systems are inadequate for the handling of such data types. They require new techniques for query formulation, retrieval, evaluation, and navigation. In this paper we develop a knowledge-based framework for modeling and retrieving image data by content. To represent the various aspects of an image object's characteristics, we propose a model which consists of three layers: (1) Featu
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3

Rigotti, Christophe, and Mohand-Saïd Hacid. Representing and Reasoning on Conceptual Queries Over Image Databases. Aachen University of Technology, 1999. http://dx.doi.org/10.25368/2022.89.

Full text
Abstract:
The problem of content management of multimedia data types (e.g., image, video, graphics) is becoming increasingly important with the development of advanced multimedia applications. Traditional database management systems are inadequate for the handling of such data types. They require new techniques for query formulation, retrieval, evaluation, and navigation. In this paper we develop a knowledge-based framework for modeling and retrieving image data by content. To represent the various aspects of an image object's characteristics, we propose a model which consists of three layers: (1) Featu
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4

Donahue, Jennifer, Jonathan Stewart, Nicolas Gregor, and Yousef Bozorgnia. Ground-Motion Directivity Modeling for Seismic Hazard Applications. Pacific Earthquake Engineering Research Center, University of California, Berkeley, CA, 2019. http://dx.doi.org/10.55461/gphh9609.

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We reviewed five models for modifying the natural log mean and within-event standard deviation of ground-motion models (GMMs) to account for directivity effects in the near-fault environment. We found broad consistency for strike–slip ruptures, with positive and negative directivity effects for cases of rupture towards and away from a site of interest, respectively. We found substantial divergence among directivity models for reverse slip, with some providing maximum directivity for sites positioned to experience the peak alignment of rupture direction with the fault-slip direction (this occur
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Gerstl, Zev, Thomas L. Potter, David Bosch, et al. Novel Herbicide Formulations for Conservation-Tillage. United States Department of Agriculture, 2009. http://dx.doi.org/10.32747/2009.7591736.bard.

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The overall objective of this study was to develop, optimize and evaluate novel formulations, which reduce herbicide leaching and enhance agronomic efficacy. Numerous studies have demonstrated that CsT promotes environmental quality and enhances sustainable crop production, yet continued use of CsT-practices appears threatened unless cost effective alternative weed control practices can be found. The problem is pressing in the southern portion of the Atlantic Coastal Plain region of the eastern USA where cotton and peanut are produced extensively. This research addressed needs of the region’s
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