Relevant bibliographies by topics / Propagace a distribuce

Contents

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

Academic literature on the topic 'Propagace a distribuce'

Author: Grafiati
Published: 28 June 2021
Last updated: 29 July 2025

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Journal articles on the topic "Propagace a distribuce"

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Zhang, Bo, Lian Jin Tao, Wen Pei Wang, and Ji Dong Li. "Research on the Vibration Attenuation Rules and Wave Propagation Law under Impacting Drill on the Deep Soil Layer." Advanced Materials Research 250-253 (May 2011): 1971–77. http://dx.doi.org/10.4028/www.scientific.net/amr.250-253.1971.

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A field test is carried out to study the effect of vibration while treating foundation using vibroflotation method in the deep soil layer in Zhengzhou, China. The vibration attenuation rules and wave propagation rules in different formations caused by different numbers of drills are analyzed. Evaluate the influence on the adjacent buildings. The result shows that the vibration will be generated in foundation obviously in the process of construction using the method. Vibration force, impact frequency and site soil are important influence factors on ground vibration attenuation. The analysis rev
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Das, Nirmali Prabha, Dorina G. Dobó, Dániel Berkesi, Ákos Kukovecz, Dezső Horváth, and Ágota Tóth. "Directional coupling in spatially distributed nanoreactors." RSC Advances 9, no. 69 (2019): 40745–49. http://dx.doi.org/10.1039/c9ra09758a.

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Zen Munawar, Novianti Indah Putri, Iswanto, and Dandun Widhiantoro. "Aplikasi Pendeteksi Dan Pelacakan Kendaraan Menggunakan Jaringan Neural Propagasi Balik." INFOTECH journal 8, no. 2 (2022): 135–40. http://dx.doi.org/10.31949/infotech.v8i2.3766.

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Penelitian ini ini bertujuan membangun sistem deteksi dan pelacakan otomatis kendaraan yang dapat diterapkan di lingkungan yang berbeda. Untuk mendeteksi kendaraan, posisi lampu belakang digunakan untuk lokalisasi kendaraan. Jaringan neural propagasi balik (back propagation neural network) yang dilatih oleh kumpulan fitur Gabor. Jaringan neural propagasi balik digunakan untuk memverifikasi kendaraan dan memastikan ketahanan sistem deteksi. Pada tahap pelacakan kendaraan, untuk mengatasi berbagai tantangan pelacakan kendaraan, adanya sebagian kendaraan dan masalah kendaraan yang hilang, penelit
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Perez-Mongiovi, D., P. Chang, and E. Houliston. "A propagated wave of MPF activation accompanies surface contraction waves at first mitosis in Xenopus." Journal of Cell Science 111, no. 3 (1998): 385–93. http://dx.doi.org/10.1242/jcs.111.3.385.

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During the period of mitosis, two surface contraction waves (SCWs) progress from the animal to vegetal poles of the Xenopus egg. It has been shown that these SCWs occur in parallel with the activation of MPF and with its subsequent inactivation in the animal and vegetal hemispheres, suggesting that they are responses to propagated waves of MPF activity across the egg. We have analysed the mechanism of MPF regulation in different regions of the egg in detail in relation to SCW progression. The distributions of histone HI kinase activity and of Cdc2 and cyclin B (the catalytic and regulatory sub
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Rodríguez-Ocampo, Paola E., Jassiel V. H. Fontes, Michael Ring, Edgar Mendoza, and Rodolfo Silva. "A CFD Numerical Study to Evaluate the Effect of Deck Roughness and Length on Shipping Water Loading." Water 13, no. 15 (2021): 2063. http://dx.doi.org/10.3390/w13152063.

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Shipping water events that propagate over the decks of marine structures can generate significant loads on them. As the configuration of the structure may affect the loading behaviour, investigation of shipping water loads in different structural conditions is required. This paper presents a numerical investigation of the effect of deck roughness and deck length on vertical and horizontal loads caused by shipping water on a fixed structure. Systematic analyses were carried out of isolated shipping water events generated with the wet dam-break method and simulated with OpenFoam Computational Fl
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Acosta, Iglesias Dagoberto, Martínez Miguel Enrique Iglesias, and Perea Milton Henry. "Modelación de la propagación de procesos de contagios influidos por la distancia de contacto." Ciencias Matemáticas 37, no. 1 (2025): 77–84. https://doi.org/10.5281/zenodo.15292953.

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La propagación de disímiles enfermedades en agrupaciones de personas, animales o plantas puede ocurrir de diversas formas como el aire, el agua, contacto físico, vectores, fluidos de los individuos, entre otros. Algunas de estas vías pueden estar vinculadas a la distancia en la que se relacionan los objetos de contagio. En esos casos, es posible elaborar un modelo de propagación basado en el modelo logístico, donde se incluye un factor de distancia entre individuos. En este artículo se realiza una propuesta de modelo para la propagación y
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LECOULANT, Jean, Samuel PINSON, and Jean-Michel PERRON. "Observation of the modal propagation of T waves using distributed acoustic sensing." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 270, no. 4 (2024): 7382–91. http://dx.doi.org/10.3397/in_2024_3954.

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T waves are low-frequency acoustic-waves (< 100 Hz) generated by earthquakes and propagating in the watercolumn. It is largely accepted that T waves propagate as modes. However, the direct observations of this modal propagation in experimental data remain surprisingly rare. Observation of T waves using distributed acoustic sensing (DAS) makes possible space-sampling with one sensor every few meters over tens of kilometers. Using a simple 2D Fourier transform, the time-space pressure-field can be turned into a frequency-wavenumber field where the propagating wave dispersion curves are reveal
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Sapaty, P. S. "Spatial grasp model for dynamic distributed systems." Mathematical machines and systems 3 (2021): 3–21. http://dx.doi.org/10.34121/1028-9763-2021-3-21.

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More complex distributed and intelligent systems which relate to economy, ecology, communi-cations, security and defense, and cover both terrestrial and celestial environments are being developed. Their efficient management, especially in dynamic and unpredictable situations, needs serious investigations and development in scientific and technological areas. Their tradi-tional representations as parts operating by certain algorithms and exchanging messages are be-coming inadequate as such systems need much stronger integration to operate as holistic organ-isms pursuing global and often varying
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Jetti, Harsha Vardhana, and Simona Salicone. "A Possibilistic Kalman Filter for the Reduction of the Final Measurement Uncertainty, in Presence of Unknown Systematic Errors." Metrology 1, no. 1 (2021): 39–51. http://dx.doi.org/10.3390/metrology1010003.

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A Kalman filter is a concept that has been in existence for decades now and it is widely used in numerous areas. It provides a prediction of the system states as well as the uncertainty associated to it. The original Kalman filter can not propagate uncertainty in a correct way when the variables are not distributed normally or when there is a correlation in the measurements or when there is a systematic error in the measurements. For these reasons, there have been numerous variations of the original Kalman filter, most of them mathematically based (like the original one) on the theory of proba
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Kimura, K., K. I. Inoue, Y. Kuroiwa, F. Tanaka, and M. Takada. "Propagated but topologically distributed forebrain neurons expressing alpha-synuclein in aged macaques." Journal of the Neurological Sciences 381 (October 2017): 179. http://dx.doi.org/10.1016/j.jns.2017.08.518.

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Dissertations / Theses on the topic "Propagace a distribuce"

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Šťáva, Zdeněk. "Trendy v oblasti propagace a distribuce hudebních děl." Master's thesis, Vysoká škola ekonomická v Praze, 2011. http://www.nusl.cz/ntk/nusl-150383.

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This thesis is devoted to an analysis of trends in promotion and distribution of musical works. The theoretical part of the thesis deals with the marketing mix, customer behavior, the definition of creative industries and copyright protection. The practical part describes the history and development of the music industry and the structure of music label, presentation opportunities, promotion and distribution of music recordings and music groups. The work also includes marketing research dealing with the sale of music recordings in the Czech Republic. Based on the results of research and analys
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Koubová, Monika Bc. "Uplatnění marketingového řízení v podniku FOPO II, s.r.o." Master's thesis, Vysoká škola ekonomická v Praze, 2008. http://www.nusl.cz/ntk/nusl-165172.

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V teoretické části se práce zaměřuje na podklady sloužící pro analýzu marketingového řízení. Společnost FOPO II., s.r.o. je autorizovaný dealer značky FORD s hlavním sídlem v Počátkách. V praktické části jsou popsány jednotlivé fáze marketingového řízení a jednotlivé nástroje marketingového mixu. V závěrečné části práce jsem zhodnotila marketingové řízení a využívání jednotlivých nástrojů marketingového mixu a navrhla jsem zlepšující opatření do budoucna.
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Tabery, Alice. "Francouzské filmy a jejich distribuce v České republice." Master's thesis, Akademie múzických umění v Praze.Filmová a televizní fakulta. Knihovna, 2012. http://www.nusl.cz/ntk/nusl-156010.

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This thesis is devoted to French films and their distribution in Czech cinemas, on DVD or on television channels in last ten years. It describes their production and promotion, the system of subsidies from the French National Film Center (CNC) and the organisation Unfrance Films. This thesis further analyses the situation on Czech film market and the position of French cinematography in our country from the nineties to the present. This is accompanied by a list of French films released between 2002 and 2011. The work also focuses on Czech distributors presenting French films. An example of one
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Bäumel, Michael. "Marketingový mix vybrané společnosti." Master's thesis, Česká zemědělská univerzita v Praze, 2017. http://www.nusl.cz/ntk/nusl-262986.

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In my thesis, I will entertain analysis of the company's marketing mix Wellness Trade, s.r.o, which deals with the sale and production of private and public wellness products. Marketing mix is a summary of the basic marketing tools and forms an integral part of the business. Entities use the marketing mix to achieve their goals. The theoretical part will be engaged in a description of components of the marketing mix, especially 4P. In the practical part I shall deal with the analysis of the marketing mix of the company subsequent to the evaluation and recommendation of actions for the next ye
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Řezníček, Michal. "Marketingový mix podniku." Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2020. http://www.nusl.cz/ntk/nusl-416846.

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This Master´s thesis deals with the marketing mix of the company. My thesis is divided into three parts - theoretical, analytical and proposal part. The theoretical part focuses on explanation of basic concepts related to my work. The analytical part is about the introduction of the company and analysis of individual methods of marketing mix. Based on the analysis, various proposals are suggested to improve the marketing mix and to raise the brand awareness for the products of the company.
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Čupka, Martin. "Technologický pokrok a jeho dopady na hudobný priemysel." Master's thesis, Vysoká škola ekonomická v Praze, 2014. http://www.nusl.cz/ntk/nusl-193295.

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This thesis deals with positive and negative effects of technological progress on the music industry. The first part presents important changes during the evolution of the music industry to its current status. Other chapters are trying to analyze current trends and their specific features in the field of production, distribution and promotion of music in the world and the Czech Republic. Special chapter is devoted to new forms of financing music project. The work also deals with the analysis of the current music consumption habits of music consumers in the Czech Republic and Slovakia. The last
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Šmok, Daniel. "Návrh na zlepšení účinnosti prvků marketingového mixu ve společnosti." Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2009. http://www.nusl.cz/ntk/nusl-222137.

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The aim of the thesis is the analysis of current marketing mix and definition of proposals for new marketing mix formulation. The theoretical part discusses different marketing mix conceptions and describes its individual components. The practical part focuses on evaluation of marketing mix in the analysed company. The final part proposes solutions for improvement of efficiency of marketing mix factors.
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Svobodová, Denisa. "Návrh zlepšení marketingového mixu provozovny Ráj hadic." Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2015. http://www.nusl.cz/ntk/nusl-225305.

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Diploma work deals with assessment of present usage of marketing mix instruments and subsequently setting of improving proposals of marketing mix of the shop Ráj hadic. This proceeding should increase awareness of customers about the shop and by that to raise a number of the customers and intentsity of its marketing activities.
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Štefanová, Michaela. "Návrh marketingového mixu." Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2017. http://www.nusl.cz/ntk/nusl-317057.

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Thesis is focused on compilation of proposals to introduce new marketing mix of Slavkovský pivovar company. Based on performed marketing analysis, there is introduced a plan of marketing mix, which is aimed at increasing of competitiveness, sales and customer awareness and satisfaction.
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Vidlák, Vojtěch. "Návrh marketingových aktivit pro rozšíření regionálního produktu v konkrétním regionu." Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2017. http://www.nusl.cz/ntk/nusl-318333.

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The diploma thesis deals with proposals of appropriate marketing activities for the company Dalešické cukrářství that are aiming to expand the product in a particular region. The results of these proposals should increase the brand awareness and the growth of sales. The proposals are build on results of analyzes based on theoretical knowledge.
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Books on the topic "Propagace a distribuce"

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Król, Dariusz. Wybrane metody propagacji danych w systemach rozproszonych: Selected data propagation methods in distributed systems. Oficyna Wydawnicza Politechniki Wrocławskiej, 2012.

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V, Paulina Hechenleitner. Plantas amenazadas del Centro-Sur de Chile: Distribucio n, conservacio n y propagacio n. 2nd ed. Universidad Austral de Chile y Real Jardin Bota nico de Edimburgo, 2005.

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Book chapters on the topic "Propagace a distribuce"

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Asai, Yoshiyuki, and Alessandro E. P. Villa. "Distributed Deterministic Temporal Information Propagated by Feedforward Neural Networks." In Lecture Notes in Computer Science. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-21735-7_32.

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Park, Mi-Ryong, Dongwon Kim, and Sang-Ha Kim. "A Simple SNR Based Linear Back-Off to Propagate Multi-hop Emergency Messages on the Distributed VANETs." In Communications in Computer and Information Science. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-35248-5_6.

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Gupta, Sandhya. "In Vitro Propagation and Conservation of Fragaria Species." In Strawberries [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.103095.

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The genus Fragaria L. belongs to the family Rosaceae. The basic chromosome number is 7 (x = 7). Around 20 species of diploid, tetraploid, hexaploid and octoploid are found in the genus. The species of Fragaria are commonly known as strawberries. The genus is found in the temperate regions of the northern hemisphere as well as South America. The most extensively distributed species in the genus is F. vesca L. and the commonly cultivated strawberry is F. x ananassa Duch. While strawberries are native to temperate climates, some varieties can be grown in subtropical climates. Fragaria is a vegeta
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Gomes de Andrade, Fabio, Fábio Luiz Leite, and Cláudio de Souza Baptista. "Using Distributed Semantic Catalogs for Information Discovery on Spatial Data Infrastructures." In Advances in Geospatial Technologies. IGI Global, 2011. http://dx.doi.org/10.4018/978-1-60960-192-8.ch006.

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Spatial data sharing among both private and public organizations is an old issue. Spatial Data Infrastructures (SDIs) have been proposed to solve data integration and discovery problems. Nonetheless, they can only partially work out these problems, as most of their catalog services are built on keyword based search. This approach always results in low precision on searching results. One of the greatest challenges in spatial integration is to provide the semantics for underlying data and services. This chapter describes a distributed catalog service that uses ontologies to describe underlying i
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Hadfield, Christopher. "Construction of cloning and expression vectors." In Molecular Genetics of Yeast. Oxford University PressOxford, 1992. http://dx.doi.org/10.1093/oso/9780199634309.003.0002.

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Abstract Numerous different types of cloning and expression vectors have been made for yeast and the majority are widely distributed amongst the international yeast research community. In the main, these are shuttle vectors that are able to propagate, and be selected for, in both yeast and Escherichia coli. This dual host capability has enabled yeast vectors to be constructed on the back of existing E. coli vectors and, in addition, has enabled recombinant derivatives to be made using efficient and powerful E. coli host-vector cloning strategies before introduction of the finished product into
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Pucciani, Gianni, Flavia Donno, Andrea Domenici, and Heinz Stockinger. "Consistency of Replicated Datasets in Grid Computing." In Handbook of Research on Grid Technologies and Utility Computing. IGI Global, 2009. http://dx.doi.org/10.4018/978-1-60566-184-1.ch006.

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Data replication is a well-known technique used in distributed systems in order to improve fault tolerance and make data access faster. Several copies of a dataset are created and placed at different nodes, so that users can access the replica closest to them, and at the same time the data access load is distributed among the replicas. In today’s Grid middleware solutions, data management services allow users to replicate datasets (i.e., flat files or databases) among storage elements within a Grid, but replicas are often considered read-only because of the absence of mechanisms able to propag
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Mok, Jeffrey. "Social and Distributed Cognition in Collaborative Learning Contexts." In Social Computing. IGI Global, 2010. http://dx.doi.org/10.4018/978-1-60566-984-7.ch121.

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Technological artifacts such as computers and mobile electronic devices have dramatically increased our learning interactions with machines. Coupled with the increasingly different forms of collaborative learning situations, our contemporary learning environments have become more complex and interconnected in today’s information age. How do we understand the learning and collaborative processes in such environments? How do members receive, analyze, synthesize, and propagate information in crowded systems? How do we investigate the collaborative processes in an increasingly sophisticated learni
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Osman Nardine, Sierra Carles, and Sabater-Mir Jordi. "Propagation of Opinions in Structural Graphs." In Frontiers in Artificial Intelligence and Applications. IOS Press, 2010. https://doi.org/10.3233/978-1-60750-606-5-595.

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Trust and reputation measures are crucial in distributed open systems where agents need to decide whom or what to choose. Existing work has overlooked the impact of an entity's position in its structural graph and its effect on the propagation of trust in such graphs. This paper presents an algorithm for the propagation of reputation in structural graphs. It allows agents to infer their opinion about unfamiliar entities based on their view of related entities. The proposed mechanism focuses on the “part of” relation to illustrate how reputation may flow (or propagate) from
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Inouye, Melissa Wei-Tsing. "A Religious Rhetoric of Competing Modernities." In Reshaping the Boundaries. Hong Kong University Press, 2017. http://dx.doi.org/10.5790/hongkong/9789888390557.003.0008.

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This chapter examines the complicated notions of modernity propagated through the flourishing Christian print culture in late Qing and early Republican China. Western missionaries had introduced modern print technology to China in the first half of the nineteenth century. This technology was not only a symbol of the scientific ethos of rationalistic modernity, but also a convenient and widely utilized tool for propagating charismatic Christian practices, as seen in the Church News, the Chinese Christian Intelligencer, and other nationally distributed Christian publications. The coexistence of
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Vale, Maria, and Marlene Matos. "How Can Cyberhate Victimization and Perpetration Be Understood?" In Contemporary Challenges for Cyber Security and Data Privacy. IGI Global, 2023. http://dx.doi.org/10.4018/979-8-3693-1528-6.ch008.

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The freedom of expression enabled through information and communication technologies (ICT) has been misused to create, (re)produce, and distribute cyberhate. Otherwise known as online hate speech, it refers to all forms of ICT-mediated expression that incites, justifies, or propagates hatred or violence against specific individuals or groups based on their gender, race, ethnicity, religion, sexual orientation, or other collective characteristics. This chapter aims to contribute to a comprehensive analysis of cyberhate among adolescents and adults. It is structured into three main sections. The
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Conference papers on the topic "Propagace a distribuce"

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Jones, Matthew R., and Yukio Yamada. "Near Infra Red Spectroscopy of Biological Tissues." In ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-1335.

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Abstract The development of spectroscopic techniques plays a key role in many newly emerging diagnostic and theraputic applications of near infra red (NIR) radiation in medicine. In applications such as photodynamic therapy, optical tomography and laser surgery it is necessary to know the optical properties of various types of biological tissue in order to predict how light will propagate and be distributed throughout the body. The optical parameters of primary interest are the reduced scattering coefficient and the absorption coefficient. In this paper, we discuss the use of the diffusion app
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Yi, Xiao, Yuzhou Fang, Daoyuan Wu, and Lingxiao Jiang. "BlockScope: Detecting and Investigating Propagated Vulnerabilities in Forked Blockchain Projects." In Network and Distributed System Security Symposium. Internet Society, 2023. http://dx.doi.org/10.14722/ndss.2023.24222.

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Drawel, Nagat, Jamal Bentahar, Amine Laarej, and Gaith Rjoub. "Formalizing Group and Propagated Trust in Multi-Agent Systems." In Twenty-Ninth International Joint Conference on Artificial Intelligence and Seventeenth Pacific Rim International Conference on Artificial Intelligence {IJCAI-PRICAI-20}. International Joint Conferences on Artificial Intelligence Organization, 2020. http://dx.doi.org/10.24963/ijcai.2020/9.

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We present a formal framework that allows individual and group of agents to reason about their trust toward other agents. In particular, we propose a branching time temporal logic BT which includes operators that express concepts such as everyone trust, distributed trust and propagated trust. We analyze the satisfiability and model checking problems of this logic using a reduction technique.
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Costa, Luis, Zhongwen Zhan, and Alireza Marandi. "Quantitative, distributed axial strain measurements using multiple modes in optical fibers." In Optical Fiber Sensors. Optica Publishing Group, 2022. http://dx.doi.org/10.1364/ofs.2022.w1.2.

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We present a quantitative distributed optical fiber strain sensor that localizes the measurement by exploiting the weak coupling and group velocity difference between co-propagated spatial channels in weakly coupled few-mode fibers.
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Pahng, Gun-Dong F., Seockhoon Bae, and David Wallace. "Web-Based Collaborative Design Modeling and Decision Support." In ASME 1998 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/detc98/eim-5681.

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Abstract This paper presents an integrated but open product development environment for distributed and collaborative design. The web-based framework, called DOME, allows designers to build integrated models using both local and distributed resources and to collaborate by exchanging services. Thus, an integrated model can be created while each participant focuses on their own area of expertise. A design model is created by connecting modules, each of which can represent specific components, analysis capabilities/software, disciplines, or organizations relevant to the problem. The modules inter
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Behbahani-Nejad, M., and N. C. Perkins. "Forced Wave Propagation in Elastic Cables With Small Curvature." In ASME 1995 Design Engineering Technical Conferences collocated with the ASME 1995 15th International Computers in Engineering Conference and the ASME 1995 9th Annual Engineering Database Symposium. American Society of Mechanical Engineers, 1995. http://dx.doi.org/10.1115/detc1995-0548.

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Abstract This study presents an investigation of the coupled longitudinal-transverse waves that propagate along an elastic cable. The coupling considered derives from the equilibrium curvature (sag) of the cable. A mathematical model is presented that describes the three-dimensional nonlinear response of a long elastic cable. An asymptotic form of this model is derived for the linear response of cables having small equilibrium curvature. Linear in-plane response is described by coupled longitudinal-transverse partial differential equations of motion, which are comprehensively evaluated herein.
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Devendorf, Erich, and Kemper Lewis. "Examining Interactions Between Solution Architecture and Designer Mistakes." In ASME 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/detc2010-28872.

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When designing complex systems, it is often the case that a design process is subjected to a variety of unexpected inputs, interruptions, and changes. These disturbances can create unintended consequences including changes to the design process architecture, the planned design responsibilities, or the design objectives and requirements. In this paper a specific type of design disturbance, mistakes, is investigated. The impact of mistakes on the convergence time of a distributed multi-subsystem optimization problem is studied for several solution process architectures. A five subsystem case stu
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Ferna´ndez, Marco Gero, David W. Rosen, Janet K. Allen, and Farrokh Mistree. "Digital Interfaces: The Key to Effective Decision-Making in Distributed Collaborative Design and Manufacturing." In ASME 2002 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/detc2002/cie-34466.

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In product development, the interfaces between distinct phases of a design process are not well defined and largely misunderstood. The same ambiguity holds true for interactions among distributed stakeholders engaged in shared, concurrent design tasks. Such vagueness fosters poor communication, problematic changeovers, and hard-to-manufacture designs. Resulting design processes tend to be iterative and not only increase product development costs and extend time-to-market, but also ultimately impede collaboration. What is needed is the ability to propagate decision-critical, up-to-date informat
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Law, C. T., and A. E. Kaplan. "Giant four-wave mixing amplification in Kerr nonlinear medium with dispersion." In OSA Annual Meeting. Optica Publishing Group, 1989. http://dx.doi.org/10.1364/oam.1989.mmm1.

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We have shown previously that two strong laser beams (with the same frequency) counterpropagating in a Kerr nonlinear medium with linear dispersion become un stable when their intensities exceed a certain threshold.1 We demonstrate here that the system exhibits large (theoretically unlimited) amplification of a probe beam when the two pumping beams have their intensities slightly below the threshold. This is in contrast to the conventional phase conjugation due to four-wave mixing in a nondispersive Kerr nonlinear medium. The mechanism of amplification in our system can be explained in terms o
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Li, Yugang, and Christopher D. Rahn. "Adaptive Vibration Isolation for Axially Moving Beams." In ASME 1999 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/detc99/vib-8302.

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Abstract Manufacture and use of metal bands, sheets, and cables often requires high-speed axial transport of the material. Disturbance forces can cause vibration to propagate through the process due to the bending stiffness coupling between adjacent roller-supported spans. This paper introduces an active pivoting roller that adaptively decouples adjacent spans, thereby isolating a controlled span from bounded disturbances in an adjacent span. The system includes a partial differential equation for the two spans and an ordinary differential equation for the actuator. Exact model knowledge and a
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Reports on the topic "Propagace a distribuce"

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The cassava seed system in Nigeria: Opportunities and challenges for policy and regulatory reform. International Potato Center, 2020. http://dx.doi.org/10.4160/23096586rtbwp20202.

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In many African countries south of the Sahara, farmers depend on the cultivation of vegetatively propagated crops (VPCs) for both consumption and commercial purposes. Yet yields for these crops remain at low levels due, in part, to the persistent use of low-quality planting material. Efforts to improve the quality of planting material exchanged in markets or through other channels are often hampered by the unique biological and economic characteristics of vegetative propagation—characteristics that distinguish VPCs from the major cereal crops that drive and shape the policy and investment choi
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