Relevant bibliographies by topics / Optical Variable Ink

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Optical Variable Ink'

Author: Grafiati
Published: 3 June 2025
Last updated: 31 July 2025

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Journal articles on the topic "Optical Variable Ink"

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Gong Xuping, 公绪平, 黄敏 Huang Min, 沈跃桐 Shen Yuetong, 魏子文 Wei Ziwen, 李修 Li Xiu та 刘瑜 Liu Yu. "光学变色油墨的颜色测量方法研究". Acta Optica Sinica 43, № 22 (2023): 2212003. http://dx.doi.org/10.3788/aos231218.

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Bates, Irena, Ivana Plazonić, Maja Rudolf, and Diana Bratić. "Quantification of the Influence of Ink Penetration and Optical Ink Density on the Print-through of Printed Straw-Based Papers." Applied Sciences 14, no. 1 (2023): 288. http://dx.doi.org/10.3390/app14010288.

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In recent years, due to environmental awareness regarding the harmfulness of polymeric materials, there has been a growing interest in using papers, especially those from alternative raw materials. The importance of using all available raw materials is imperative today. Raw materials that were once viewed as waste are now of great importance because they have the ability to replace raw materials that are used irrationally or are lacking. Cereal straw is a lignocellulosic material that could be used in the paper industry and in the production of increasingly prevalent paper packaging. The aim o
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Cigula, Tomislav, Tamara Tomašegović, and Tomislav Hudika. "Effect of the paper surface properties on the ink transfer parameters in offset printing." Nordic Pulp & Paper Research Journal 34, no. 4 (2019): 540–49. http://dx.doi.org/10.1515/npprj-2019-0018.

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Abstract Paper has a crucial impact on the qualitative properties of printed product as properties of the paper’s surface directly impact the ink transfer, consequently, basic optical properties of the print. Although same ISO paper type, papers possess variable surface properties leading to different influence on the ink transfer. The aim of this research was to analyse influence of the surface properties of the paper, including surface free energy, smoothness and gloss of some standard papers used in lithography on the ink transfer while matching the colorimetric values defined by ISO 12647-
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Dodgson, James T., Andreas Mandelis, and Claudio Andreetta. "Optical-absorption coefficient measurements in solids and liquids using correlation photoacoustic spectroscopy." Canadian Journal of Physics 64, no. 9 (1986): 1074–80. http://dx.doi.org/10.1139/p86-185.

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The spectroscopic information related to the optical-absorption coefficients of solids and liquids, which is contained in the signal-magnitude and time-delay channels of cross-correlation photoacoustic spectroscopy (CPAS), has been investigated. Powders of holmium oxide and aqueous solutions of black India ink of variable concentrations were used as solid and liquid samples, respectively. The experimental results were found to be in general agreement with a one-dimensional theoretical model of the CPAS-signal generation.
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Lee, Sang Il, Dongjin Lee, and Kunsik An. "Fabrication of Type-Variable Electronic Paper Using Electrophoretic Particle Loading with Multiple Bottom Electrode Structure." Materials 15, no. 6 (2022): 2289. http://dx.doi.org/10.3390/ma15062289.

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This study suggested the design of type-variable electronic paper with multiple bottom electrode structures and experimentally investigated the process mechanism of the electrophoretic particle loading method (EPLM) as an electronic ink injection method. The type-variable electronic paper was achieved by constructing the multi-electrode structure that had a structure of four electrodes that can independently apply voltage to one cell. By injecting electronic ink that mixes two types of particles with opposite charges into an electrically neutral color (blue) fluid, we realized electronic paper
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Yuriy, Agalidi, Aleksander Bokszczanin, and Maris Kaminskis. "Forensic investigation of magnetic printing based on magnetic measurements." Problemy Współczesnej Kryminalistyki 28 (March 3, 2025): 331–51. https://doi.org/10.52097/pwk.9593.

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The research objective was to experimentally verify the suitability of magneto-optical (MO) topograms for solving forensic problems with magnetic printing documents. Paper starts with presentation of necessary knowledge regarding magnetic field on the surface of an object, from which factors that affects its parameters are presented. Secondly, a method of visualization of magnetic fields and MO topography device are presented. Experimental research of objects under conditions of constant magnetization were carried out using a two-coordinate MO scanner. The given examples of research show that
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Stando, Martha, Arnaud Morin, Gerard Gebel, Lionel Porcar, Stephane Cotte, and Jakub Drnec. "Investigation of Manufacturing Process Related Structure and Performance of the Fuel Cell Electrode Thanks to Small Angle Neutron Scattering." ECS Meeting Abstracts MA2023-02, no. 65 (2023): 3161. http://dx.doi.org/10.1149/ma2023-02653161mtgabs.

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With climate change and fossil fuel sustainability concerns faced globally, proton exchange membrane fuel cell (PEMFC) based electric vehicles have been recognized as a promising alternative. However, large-scale commercialization requires progress in performance, cost and durability, for which the electrode (catalyst layer) is the limiting component. The electrode is composed of nanoparticles of platinum (Pt) catalyst on a carbon (C) support, embedded in a proton conductive polymer (ionomer). It is obtained from a slurry (catalyst ink) after evaporating solvent consisting of a water and alcoh
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Mr., Rajeev &. Mr. Dhirender. "A SURVEY OF URBAN PEOPLE AWARENESS ABOUT NEW INDIAN CURRENCY SECURITY FEATURES AFTER DEMONETIZATION." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 6, no. 7 (2017): 563–67. https://doi.org/10.5281/zenodo.829771.

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Use of currency notes is increasing year by year and so does risk of its holders.It has become need of hour for every country to make its currency difficult to counterfeit.Security features and security printing are the only solution for this problem.Security features not only prevent duplicacyof notes but also save the poor citizens from possible financial loss.This survey work was carried out to understand the awareness level about security features in new currency notes because relevancy of such work has increased by manifold in recent era after demonetization.
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Lopinski, Gregory. "(Invited) Metrology of Solution Processable 2D Materials for Electronic Applications." ECS Meeting Abstracts MA2022-01, no. 18 (2022): 1027. http://dx.doi.org/10.1149/ma2022-01181027mtgabs.

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Two-dimensional materials have attracted intense interest due to their remarkable physical and electronic properties as well as their potential for a diverse range of applications. Many of these envisaged applications (i.e. printed/flexible electronics, energy storage, photovoltaics) require single or few layer flakes of a 2D material that can be dispersed in solution to facilitate deposition onto a substrate, formulation into an ink and/or mixing into a composite. A variety of powders and dispersions claiming to contain 2D materials such as graphene are now becoming available but the variable
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Brown, James D., and Dong-Jun Seo. "A Nonparametric Postprocessor for Bias Correction of Hydrometeorological and Hydrologic Ensemble Forecasts." Journal of Hydrometeorology 11, no. 3 (2010): 642–65. http://dx.doi.org/10.1175/2009jhm1188.1.

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Abstract This paper describes a technique for quantifying and removing biases from ensemble forecasts of hydrometeorological and hydrologic variables. The technique makes no a priori assumptions about the distributional form of the variables, which is often unknown or difficult to model parametrically. The aim is to estimate the conditional cumulative distribution function (ccdf) of the observed variable given a (possibly biased) real-time ensemble forecast. This ccdf represents the “true” probability distribution of the forecast variable, subject to sampling uncertainties. In the absence of a
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Dissertations / Theses on the topic "Optical Variable Ink"

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Di, Leo Rocco. "Optimal tuning of control variables in CR Diesel engines via Multi-Zone modelling of combustion and emissions with experimental testing." Doctoral thesis, Universita degli studi di Salerno, 2016. http://hdl.handle.net/10556/2228.

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2014 - 2015<br>The interest in Diesel engines for automotive application has dramatically grown in the last decades, due to the benefits gained with the introduction of Common Rail system and electronic control. A strong increase in fuel economy and a remarkable reduction of emissions and combustion noise have been achieved, thanks to both optimized fuelling strategy and advanced fuel injection technology. In the last years many efforts are addressed towards a suitable design of engine control strategies and consequently new combustion concepts, such as Low Temperature Combustion (LTC), in ord
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Loeza-Serrano, Sergio Ivan. "Optimal statistical design for variance components in multistage variability models." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/optimal-statistical-design-for-variance-components-in-multistage-variability-models(d407bb0e-cbb0-4ef8-ab6d-80cf3e4327cb).html.

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This thesis focuses on the construction of optimum designs for the estimation of the variance components in multistage variability models. Variance components are the model parameters that represent the different sources of variability that affect the response of a system. A general and highly detailed way to define the linear mixed effects model is proposed. The extension considers the explicit definition of all the elements needed to construct a model. One key aspect of this formulation is that the random part is stated as a functional that individually determines the form of the design matr
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Books on the topic "Optical Variable Ink"

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Svensson, Lars E. O. Indicator variables for optimal policy under asymmetric information. National Bureau of Economic Research, 2001.

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Tuhfatullin, Boris. Nonlinear problems of structural mechanics. Methods of optimal design of structures. INFRA-M Academic Publishing LLC., 2021. http://dx.doi.org/10.12737/1201340.

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The textbook discusses methods of optimal design of structures, including methods for minimizing the functions of one and several variables; methods for solving linear and nonlinear programming problems; examples of optimal design of flat steel frames with elements made of rolled and composite I-beams. It is intended for students studying in the specialty 08.05.01 "Construction of unique buildings and structures", undergraduates studying in the training program 08.04.01.24 "Modern technologies of design and construction of buildings and structures", studying the discipline "Nonlinear problems
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Malyuk, Viktor, and Sergey Leonovich. Durability of structural concrete under frost and salt influences: monitoring, testing, recommendations. INFRA-M Academic Publishing LLC., 2023. http://dx.doi.org/10.12737/2035493.

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The monograph considers a set of issues related to the production of durable concretes for aggressive media of class XF4. The work of concrete of port facilities in conditions characteristic of the sea coast of the Arctic and Far Eastern seas is highlighted. The factors of aggressiveness in conditions of frost exposure for concrete&#x0D; of the zone of variable water level are considered. Today, in order to make optimal economic and environmental decisions, the task of transitioning the design and construction of structures according to operational characteristics has become obvious. Conceptua
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Peschanskiy, Aleksey. Semi-Markov models of prevention of unreliable single-channel service system with losses. INFRA-M Academic Publishing LLC., 2022. http://dx.doi.org/10.12737/1870597.

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The monograph examines various maintenance strategies of a single-channel system with losses and unreliable recoverable service device under the assumption of a general type of random variables describing random processes occurring in the system. The apparatus for constructing models of the functioning of the system are semi-Markov processes with a measurable phase space of states and phase enlargement algorithms. Stationary probabilistic and economic indicators of the system are explicitly determined and the tasks of optimal frequency of maintenance of the device are solved.&#x0D; For researc
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Koldaev, Viktor. Theoretical and methodological aspects of the use of information technologies in education. INFRA-M Academic Publishing LLC., 2021. http://dx.doi.org/10.12737/1014651.

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The article summarizes the experience of implementing a personality-oriented approach to the formation of a structural and content model of the educational process at the university. The results of the introduction of information technologies and their services in the field of education are presented, as well as the impact of computerization on the quality of education in the framework of the modern educational paradigm. The priority directions of innovative educational strategies of the university are identified and a graph model of the individual educational route of the student is proposed
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Southeast Geometry Seminar (15th 2009 University of Alabama at Birmingham). Geometric analysis, mathematical relativity, and nonlinear partial differential equations: Southeast Geometry Seminars Emory University, Georgia Institute of Technology, University of Alabama, Birmingham, and the University of Tennessee, 2009-2011. Edited by Ghomi Mohammad 1969-. American Mathematical Society, 2013.

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P, Minicozzi William, ed. A course in minimal surfaces. American Mathematical Society, 2011.

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Prussing, John E. Optimal Trajectories. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198811084.003.0005.

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Optimal trajectories are analysed, covering both constant- and variable-specific-impulse cases. Primer vector is defined and illustrated. The first-order necessary conditions for an optimal constant-specific-impulse (CSI) trajectory were first derived by Lawden using classical Calculus of Variations. Variable-specific-impulse rocket engines are discussed with the cost functional for a VSI engine. In the derivation that follows, an Optimal Control Theory formulation is used, but the derivation is similar to that of Lawden. One difference is that the mass is not defined as a state variable, but
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Butyrskiy, Evgeniy. Methods for modeling and estimating random variables and processes. Strategy of the Future, 2020. http://dx.doi.org/10.37468/mon_1850.

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The monograph introduces the basics of theory and practice of mathematical research methods of stochastic systems and processes. It examines the models, methods of describing and forming random events, values and processes, as well as methods of their optimal and suboptimal assessment. The monograph can be useful for a wide range of specialists in various fields of expertise in mathematical and statistical modeling in their research, and can also be used in the learning process to conduct both classroom, and independent theoretical and practical classes with students and masters of St. Petersb
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Bogartz, Richard S. Introduction to the Analysis of Variance. Greenwood Publishing Group, Inc., 1994. http://dx.doi.org/10.5040/9798400672118.

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This book is for students taking either a first-year graduate statistics course or an advanced undergraduate statistics course in Psychology. Enough introductory statistics is briefly reviewed to bring everyone up to speed. The book is highly user-friendly without sacrificing rigor, not only in anticipating students' questions, but also in paying attention to the introduction of new methods and notation. In addition, many topics given only casual or superficial treatment are elaborated here, such as: the nature of interaction and its interpretation, in terms of theory and response scale transf
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Book chapters on the topic "Optical Variable Ink"

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Hodgson, Norman, and Horst Weber. "Resonators with Variable Internal Lenses." In Springer Series in Optical Sciences. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-51873-7_14.

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Wei, Ziwen, Yu Liu, Yuetong Shen, Xuping Gong, Xiu Li, and Min Huang. "Evaluation of Color Measurement Geometries for Optically Variable Inks." In Lecture Notes in Electrical Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-99-9955-2_7.

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Kling, Sebastian, Tobias Salger, Carsten Geckeler, Gunnar Ritt, Johannes Plumhof, and Martin Weitz. "Atomic Bose-Einstein Condensates in Optical Lattices with Variable Spatial Symmetry." In Springer Series in Optical Sciences. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-02066-7_11.

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Gutierrez, Jose, Tahir Riaz, Jens Perdersen, and Beata Marciniak. "Introducing Variable Factors for Optical Backbone Interconnection Planning." In Advances in Intelligent and Soft Computing. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-23154-4_53.

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Xu, Xiaohua, Ling Chen, and Ping He. "Variable Population Size Made Genetic Algorithm Optimal." In Advances in Computational Methods in Sciences and Engineering 2005 (2 vols). CRC Press, 2022. http://dx.doi.org/10.1201/9780429077166-142.

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Lin, Psang Dain. "The Jacobian Matrix of a Ray with Respect to System Variable Vector." In Springer Series in Optical Sciences. Springer Singapore, 2013. http://dx.doi.org/10.1007/978-981-4451-79-6_5.

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Lin, Psang Dain. "Optical Path Length and Its Jacobian Matrix with Respect to System Variable Vector." In Springer Series in Optical Sciences. Springer Singapore, 2013. http://dx.doi.org/10.1007/978-981-4451-79-6_7.

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Ashry, Islam, Ali Elrashidi, Dalia Sallam, Moustafa H. Ali, and Khaled Elleithy. "Variable Delay Optical Buffer Using Tunable Fiber Bragg Gratings." In Lecture Notes in Electrical Engineering. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-06764-3_17.

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Sirimanna, M. P. G., Jonathan D. Nixon, and M. S. Innocente. "Performance of Different Optimization Solvers for Designing Solar Linear Fresnel Reflector Power Generation Systems." In Springer Proceedings in Energy. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-30960-1_30.

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AbstractLinear Fresnel Reflector (LFR) is an emerging solar thermal power generation technology that benefits from a simple and low-cost construction in comparison to more conventional Concentrating Solar thermal Power (CSP) generation technologies such as parabolic trough and power tower. Although LFR technology presents the drawbacks of lower energy conversion efficiency and higher energy cost, these can be offset by optimizing its design. This has not been sufficiently addressed due to the complex interactions between solar rays, heat transfer modes, and design variables. This work presents
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Wulf, Alexander J. "The Transaction Costs Latent Variable Model." In Institutional Competition between Optional Codes in European Contract Law. Springer Fachmedien Wiesbaden, 2014. http://dx.doi.org/10.1007/978-3-658-05801-2_8.

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Conference papers on the topic "Optical Variable Ink"

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García-Cortés, Elvis Anyel, Julio César Pérez-Sansalvador, and Teresita Spezzia-Mazzocco. "Optical Property Characterization of Agar-Based Phantoms with Variable Ink and Nanoparticle Concentrations." In Latin America Optics and Photonics Conference. Optica Publishing Group, 2024. https://doi.org/10.1364/laop.2024.w4a.1.

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This study seeks to simulate different tissues using agar-based phantoms with varying ink and nanoparticle concentrations. Spectrophotometric methods were used to characterize the optical coefficients, revealing increased values with higher concentrations of ink and nanoparticles.
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Ikehara, Shion, Keitaro Anai, Yoshichika Yano, Daichi Okuno, and Shuntaro Takeda. "Demonstration of continuous-variable quantum machine learning using optical circuits." In Frontiers in Optics. Optica Publishing Group, 2024. https://doi.org/10.1364/fio.2024.fw6c.3.

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We demonstrate the implementation of the classification task with the continuous-variable (CV) quantum kernel method on a programmable photonic quantum processor. We experimentally prove that the CV quantum kernel method successfully classifies several datasets robustly.
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Kim, Jong-Hoi, Sang-Ho Park, Young-Tak Han, et al. "Silicon Nitride Based Planar Lightwave Circuits for Coherent Optics." In Bragg Gratings, Photosensitivity, and Poling in Glass Waveguides. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/bgpp.2024.jtu1a.21.

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We present planar lightwave circuits based on silicon nitride waveguides plat-form to realize monolithic integration of polarization beam splitters, optical 90° hybrids, variable optical attenuators, and micro-ring resonators for coherent detection.
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Piatriková, Lucia, Peter Tarábek, and Ivan Cimrák. "Digital Verification of Optically Variable Ink Feature on Identity Cards." In 2023 33rd Conference of Open Innovations Association (FRUCT). IEEE, 2023. http://dx.doi.org/10.23919/fruct58615.2023.10142989.

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Phillips, Roger W. "Optically variable films, pigments, and inks." In San Dieg - DL Tentative, edited by Richard I. Seddon. SPIE, 1990. http://dx.doi.org/10.1117/12.22377.

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Li, Xiyang, Pingzhi Fan, Naoki Suehiro, and Dianhua Wu. "Further constructions of optimal variable-weight optical orthogonal codes." In 2011 Fifth International Workshop on Signal Design and its Applications in Communications (IWSDA). IEEE, 2011. http://dx.doi.org/10.1109/iwsda.2011.6159406.

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Hartman, John S., and Masud Mansuripur. "Read Channel Optical Modeling for a Bump Forming Dye-Polymer Medium." In Optical Data Storage. Optica Publishing Group, 1989. http://dx.doi.org/10.1364/ods.1989.thc6.

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Read channel optical modeling has been conducted for a bump forming dye-polymer medium developed by Optical Data, Inc. (ODI). The medium configuration options and operating principles have been reported previously (1,2,3). This paper will present a simple model for written marks on the media and the results of preliminary read channel optical modeling to determine the effects of media and drive variables on the read signal.
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Degott, Pierre. "Optically Variable Inks (OVI): versatility in formulation and usage." In Electronic Imaging, edited by Rudolf L. van Renesse and Willem A. Vliegenthart. SPIE, 2000. http://dx.doi.org/10.1117/12.382202.

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Buranathiti, Thaweepat, Jian Cao, and Wei Chen. "A Weighted Three-Point-Based Strategy for Variance Estimation." In ASME 2004 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/detc2004-57363.

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In manufacturing processes, it is widely accepted that uncertainty plays an important role and should be taken into account during analysis and design processes. However, uncertainty quantification of its effects on an end-product is a very challenging task, especially when an expensive computational effort is already needed in deterministic models such as sheet metal forming simulations. In this paper, we focus our work on the variance estimation of the system response. A weighted three-point-based strategy is proposed to efficiently and effectively estimate the variance of the system respons
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Pagano, Claudia, and Irene Fassi. "An Innovative Polymeric Material for Microhandling." In ASME 2008 International Manufacturing Science and Engineering Conference collocated with the 3rd JSME/ASME International Conference on Materials and Processing. ASMEDC, 2008. http://dx.doi.org/10.1115/msec_icmp2008-72485.

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The rationales for the use of microsystems are numerous, including the reduction of consumables (less chemicals in Lab-on-a-Chip), a faster response time (airbag sensors), the enhanced portability (RF-MEMS), the higher resolution (Inkjet printer head), and the higher efficiency (micro-chemical reactor); moreover their application sectors are numerous. For this reason, during the past decades many improvements have been done concerning the design and manufacturing of microsystems and several products have been fabricated for a great variety of applications in the traditional fields, including t
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Reports on the topic "Optical Variable Ink"

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Kott, Phillip S. Calibration-Weighting a Stratified Simple Random Sample with SUDAAN. RTI Press, 2022. http://dx.doi.org/10.3768/rtipress.2022.mr.0048.2204.

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This report shows how to apply the calibration-weighting procedures in SAS-callable SUDAAN (Version 11) to a stratified simple random sample drawn from a complete list frame for an establishment survey. The results are calibrated weights produced via raking, raking to a size variable, and pseudo-optimal calibration that potentially reduce and appropriately measure the standard errors of estimated totals. The report then shows how to use these procedures to remove selection bias caused by unit nonresponse under a plausible response model. Although unit nonresponse is usually assumed to be a fun
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Seginer, Ido, James Jones, Per-Olof Gutman, and Eduardo Vallejos. Optimal Environmental Control for Indeterminate Greenhouse Crops. United States Department of Agriculture, 1997. http://dx.doi.org/10.32747/1997.7613034.bard.

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Increased world competition, as well as increased concern for the environment, drive all manufacturing systems, including greenhouses, towards high-precision operation. Optimal control is an important tool to achieve this goal, since it finds the best compromise between conflicting demands, such as higher profits and environmental concerns. The report, which is a collection of papers, each with its own abstract, outlines an approach for optimal, model-based control of the greenhouse environment. A reliable crop model is essential for this approach and a significant portion of the effort went i
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Christensen, Timothy M., and Xiaohong Chen. Optimal sup-norm rates, adaptivity and inference in nonparametric instrumental variables estimation. Institute for Fiscal Studies, 2015. http://dx.doi.org/10.1920/wp.cem.2015.3215.

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Tao, Yang, Amos Mizrach, Victor Alchanatis, Nachshon Shamir, and Tom Porter. Automated imaging broiler chicksexing for gender-specific and efficient production. United States Department of Agriculture, 2014. http://dx.doi.org/10.32747/2014.7594391.bard.

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Extending the previous two years of research results (Mizarch, et al, 2012, Tao, 2011, 2012), the third year’s efforts in both Maryland and Israel were directed towards the engineering of the system. The activities included the robust chick handling and its conveyor system development, optical system improvement, online dynamic motion imaging of chicks, multi-image sequence optimal feather extraction and detection, and pattern recognition. Mechanical System Engineering The third model of the mechanical chick handling system with high-speed imaging system was built as shown in Fig. 1. This syst
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Horneff, Vanya, Raimond Maurer, and Olivia Mitchell. Fixed and Variable Longevity Annuities in Defined Contribution Plans: Optimal Retirement Portfolios Taking Social Security into Account. National Bureau of Economic Research, 2023. http://dx.doi.org/10.3386/w30853.

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Gangadurai, Mohan, B. Sreekumar, and Harikrishnan Nagarajan. Development of control strategy for optimal control of a continuously variable transmission operating in combination with a throttle controlled engine. SAE International, 2005. http://dx.doi.org/10.4271/2005-32-0007.

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O. C. Bernardo, Felipe, Sebastião V. Canevarolo, and José A. C. G. Covas. Evaluation of temperature impact during extrusion on the mixing levels of PS/PA6 by optical monitoring. Universidad de los Andes, 2024. https://doi.org/10.51573/andes.pps39.gs.ex.2.

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This work uses on-line monitoring of turbidity to ascertain the temperature impact on the mixing performance of kneading blocks with different geometries. For this purpose, one of the barrel segments of the extruder was modified to incorporate four sampling devices and a slit die containing optical windows. The experiments consisted in reaching steady extrusion and then adding a small amount of tracer. Upon opening each sampling device, material was laterally detoured from the local screw channel and its turbidity were measured by the optical detector. Residence time distribution (RTD) curves
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Lieth, J. Heiner, Michael Raviv, and David W. Burger. Effects of root zone temperature, oxygen concentration, and moisture content on actual vs. potential growth of greenhouse crops. United States Department of Agriculture, 2006. http://dx.doi.org/10.32747/2006.7586547.bard.

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Soilless crop production in protected cultivation requires optimization of many environmental and plant variables. Variables of the root zone (rhizosphere) have always been difficult to characterize but have been studied extensively. In soilless production the opportunity exists to optimize these variables in relation to crop production. The project objectives were to model the relationship between biomass production and the rhizosphere variables: temperature, dissolved oxygen concentration and water availability by characterizing potential growth and how this translates to actual growth. As p
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Clausen, Jay, Susan Frankenstein, Jason Dorvee, et al. Spatial and temporal variance of soil and meteorological properties affecting sensor performance—Phase 2. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/41780.

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An approach to increasing sensor performance and detection reliability for buried objects is to better understand which physical processes are dominant under certain environmental conditions. The present effort (Phase 2) builds on our previously published prior effort (Phase 1), which examined methods of determining the probability of detection and false alarm rates using thermal infrared for buried-object detection. The study utilized a 3.05 × 3.05 m test plot in Hanover, New Hampshire. Unlike Phase 1, the current effort involved removing the soil from the test plot area, homogenizing the mat
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10

Russo, David, Daniel M. Tartakovsky, and Shlomo P. Neuman. Development of Predictive Tools for Contaminant Transport through Variably-Saturated Heterogeneous Composite Porous Formations. United States Department of Agriculture, 2012. http://dx.doi.org/10.32747/2012.7592658.bard.

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The vadose (unsaturated) zone forms a major hydrologic link between the ground surface and underlying aquifers. To understand properly its role in protecting groundwater from near surface sources of contamination, one must be able to analyze quantitatively water flow and contaminant transport in variably saturated subsurface environments that are highly heterogeneous, often consisting of multiple geologic units and/or high and/or low permeability inclusions. The specific objectives of this research were: (i) to develop efficient and accurate tools for probabilistic delineation of dominant geol
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