Relevant bibliographies by topics / Layered system

Academic literature on the topic 'Layered system'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Layered system"

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Agrawal, Surendra, Vaishali Londhe, and Ram Gaud. "Niosomes: Layered Delivery System For Drug Targeting." International Journal of Scientific Research 3, no. 1 (June 1, 2012): 413–17. http://dx.doi.org/10.15373/22778179/jan2014/143.

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Pravdin, K. V., and I. Yu Popov. "Layered system with metamaterials." Journal of Physics: Conference Series 661 (December 2, 2015): 012025. http://dx.doi.org/10.1088/1742-6596/661/1/012025.

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Hung, Yung-Chen. "A layered hyperanimation system." Software: Practice and Experience 30, no. 10 (2000): 1067–94. http://dx.doi.org/10.1002/1097-024x(200008)30:10<1067::aid-spe329>3.0.co;2-b.

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Hernández-Cruz, Xaimarie, J. René Villalobos, George Runger, and Grace Neal. "Layered Market Intelligence System." Transportation Research Procedia 67 (2022): 31–38. http://dx.doi.org/10.1016/j.trpro.2022.12.032.

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N, Mahima, Noor Siddiqa, and Tanvir Habib Sardar. "Multi-Layered Security System Using Cryptography and Steganography." International Journal of Innovative Research in Computer Science & Technology 7, no. 2 (March 2019): 8–11. http://dx.doi.org/10.21276/ijircst.2019.7.2.1.

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Yung-Chen, Hung, and Chen Gen-Huey. "A layered communication system generator." Journal of Systems and Software 18, no. 2 (May 1992): 157–70. http://dx.doi.org/10.1016/0164-1212(92)90125-4.

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Herzenberg, Leonore A., and Leonard A. Herzenberg. "Toward a layered immune system." Cell 59, no. 6 (December 22, 1989): 953–54. http://dx.doi.org/10.1016/0092-8674(89)90748-4.

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Lenzo, Kevin A., John Josephson, Osamu Fujimura, and Christopher Bailey‐Kellogg. "Layered language understander: A speech recognition system using layered abduction." Journal of the Acoustical Society of America 97, no. 5 (May 1995): 3246. http://dx.doi.org/10.1121/1.411697.

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Oh, Young-Jin, and Gi-Yong Song. "System-Level Verification Platform using System Verilog Layered Testbench & SystemC OOP." International Journal of Control and Automation 7, no. 2 (February 28, 2014): 221–30. http://dx.doi.org/10.14257/ijca.2014.7.2.21.

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Елисеенко, Г. Д., А. В. Инзарцев, and А. М. Павин. "AUV LAYERED DISTRIBUTED EMERGENCY CONTROL SYSTEM." Podvodnye issledovaniia i robototehnika, no. 4(34) (January 24, 2020): 23–30. http://dx.doi.org/10.37102/24094609.2020.34.4.003.

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Рассматриваются концепция и реализация контрольно-аварийной системы (КАС), которая направлена на повышение живучести автономных необитаемых подводных аппаратов (АНПА) различного класса и назначения. Задача повышения живучести АНПА решается одновременно по нескольким направлениям: дублирование программных и аппаратных средств, а также обеспечение их взаимного согласованного (не противоречивого) функционирования. КАС создана на базе иерархической декомпозиции решаемых задач и включает в себя несколько уровней программного обеспечения, а также аппаратную часть. Программная часть КАС выполняет контроль целостности программного обеспечения, предстартовую диагностику, мониторинг ошибок и аварий. Аппаратная часть КАС обеспечивает возможность обнаружения и подъема АНПА в случае выхода из строя его вычислительной системы. Ключевой особенностью предлагаемого подхода является «относительно независимое» поведение систем в различных режимах работы (как штатных, так и аварийных), а также способность КАС в максимальном объеме выполнять заложенную программу-задание (миссию). Рассматриваются различные сценарии поведения АНПА во время возникновения нештатных ситуаций. The work considers the concept and implementation of an emergency control system (ECS) to increase the survivability of autonomous underwater vehicles (AUV) of different types and functionality. The task of raising the AUV survivability can be solved in several ways: dual redundancy of software and hardware means and providing their mutual coherent (consistent) functioning. ECS is based on a hierarchal decomposition of solving tasks and includes several software layers and hardware components. The ECS software component controls the software's integrity, prelaunch diagnostic, errors, and emergency monitoring. The ECS hardware component provides capabilities of positioning and emersion of AUV in case of its computational system malfunction. The key feature of the proposed approach is the "relatively independent" behavior of the systems in different operational modes (both routine and emergency) and the capability of the ECS to perform the predetermined task (mission) to the maximum extent. Different scenarios of AUV behavior in emergencies are considered.
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Dissertations / Theses on the topic "Layered system"

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Sainani, Varsha. "Hybrid Layered Intrusion Detection System." Scholarly Repository, 2009. http://scholarlyrepository.miami.edu/oa_theses/44.

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The increasing number of network security related incidents has made it necessary for the organizations to actively protect their sensitive data with network intrusion detection systems (IDSs). Detecting intrusion in a distributed network from outside network segment as well as from inside is a difficult problem. IDSs are expected to analyze a large volume of data while not placing a significant added load on the monitoring systems and networks. This requires good data mining strategies which take less time and give accurate results. In this study, a novel hybrid layered multiagent-based intrusion detection system is created, particularly with the support of a multi-class supervised classification technique. In agent-based IDS, there is no central control and therefore no central point of failure. Agents can detect and take predefined actions against malicious activities, which can be detected with the help of data mining techniques. The proposed IDS shows superior performance compared to central sniffing IDS techniques, and saves network resources compared to other distributed IDSs with mobile agents that activate too many sniffers causing bottlenecks in the network. This is one of the major motivations to use a distributed model based on a multiagent platform along with a supervised classification technique. Applying multiagent technology to the management of network security is a challenging task since it requires the management on different time instances and has many interactions. To facilitate information exchange between different agents in the proposed hybrid layered multiagent architecture, a low cost and low response time agent communication protocol is developed to tackle the issues typically associated with a distributed multiagent system, such as poor system performance, excessive processing power requirement, and long delays. The bandwidth and response time performance of the proposed end-to-end system is investigated through the simulation of the proposed agent communication protocol on our private LAN testbed called Hierarchical Agent Network for Intrusion Detection Systems (HAN-IDS). The simulation results show that this system is efficient and extensible since it consumes negligible bandwidth with low cost and low response time on the network.
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Guastavino, Rémi. "Elastic and acoustic characterisation of porous layered system." Licentiate thesis, KTH, Aeronautical and Vehicle Engineering, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4047.

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For an accurate prediction of the low and medium frequency surface vibration and sound radiation behaviour of porous layered systems, there is a need to improve the means of estimating their elastic and acoustic properties. The underlying reasons for this are many and of varying origin, one prominent being a poor knowledge of the geometric anisotropy of the cell microstructure in the manufactured porous materials. Another one being, the characteristic feature of such materials i.e. that their density, elasticity and dissipative properties are highly dependent upon the manufacturing process techniques and settings used. In the case of free form moulding, the geometry of the cells and the dimensions of the struts are influenced by the rise and injection flow directions and also by the effect of gravity, elongating the cells. In addition the influence of the boundaries of the mould also introduces variations in the properties of the foam block produced. Despite these complications, the need to predict and, in the end, optimise the acoustic performance of these materials, either as isolated components or as part of a multi-layer arrangement, is growing. It is driven by the increasing demands for an acoustic performance in balance with the costs, a focus which serves to increase the need for modelling their behaviour in general and the above mentioned, inherent, anisotropy in particular. The current work is focussing on the experimental part of the characterisation of the material properties which is needed in order to correctly represent the anisotropy in numerical simulation models. A hybrid approach based on a combination of experimental deformation and strain field mapping, and physically based porous material acoustic Finite Element (FE) simulation modelling, is under development which ultimately will provide the anisotropic elastic coefficients and acoustic properties of the porous layered system. The first step, involving new testing methods, is discussed here and demonstrated for a soft foam.

In addition investigations using laser vibrometers combined with finite element modelling of the Panphonics G1 multi-layered panel elements are also discussed. Variations in the mounting conditions, including globally acting restraints, are evaluated through dynamic measurements and acoustic interaction with the surrounding acoustic field. Results from investigations into different changes of the panel design parameters in order to improve the effectiveness in the low frequency range are presented.

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Shousha, Christiane Wahba. "Applying layered queueing modelling to a telecommunication system." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ36897.pdf.

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Guastavino, Rémi. "Elastic and acoustic characterisation of porous layered system /." Stockholm, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4047.

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Tsuji, Yuichi. "Synthesis of π-System-Layered Structures Based on Rigid Scaffolds." 京都大学 (Kyoto University), 2014. http://hdl.handle.net/2433/188608.

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Radde, Sven [Verfasser], and Burkhard [Akademischer Betreuer] Freitag. "A Layered Conversational Recommender System / Sven Radde. Betreuer: Burkhard Freitag." Passau : Universitätsbibliothek der Universität Passau, 2013. http://d-nb.info/1037243102/34.

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Calla, Chaitanya. "Two layered ballast system for improved performance of railway track." Thesis, Coventry University, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.402705.

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Cai, Yi, and 蔡毅. "A virtual prototyping system with reconfigurable manipulators for layered manufacturing." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2011. http://hub.hku.hk/bib/B47046144.

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Zhou, Jianong. "Three-dimensional visualization of multi-layered graphs with application to communications." Thesis, University of Ottawa (Canada), 2006. http://hdl.handle.net/10393/27316.

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This thesis introduces two new algorithms for 3D graph drawing and network display. The first algorithm, the Incremental Projection Algorithm , is a new universal algorithm for displaying any graph of any vertex degree. The above algorithm can be implemented to display graph in 3D space without edge crossing. The number of edge bends produced by the algorithm does not excess two. The average time complexity of the Incremental Projection Algorithm is O( N N), where N is the number of vertices in a graph. If there is no degree of vertices great than M, the time complexity of the Incremental Projection Algorithm is O(N). The second algorithm is called Depth-Height Buffer Algorithm. The algorithm is designed for displaying special multi-layered networks. Actually, the algorithm is a method for hidden object elimination. It is useful for multi-layered communication networks visualization. The time complexity of the Depth-Height Buffer Algorithm is O(N log N) . Two demonstration packages of the above algorithms are developed in order, to verify their correctness and functionality. The thesis also discusses the methods and techniques for 2D graph drawing. In bi-layered crossing reduction aspect the thesis presents a new method called the minimizing angle approach, which may reduce the crossings among the edges with the time complexity of O(|S |max(|N|,|S |)).
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Brockmeier, Oivind. "Automated Loading and Unloading of the Stratasys FDM 1600 Rapid Prototyping System." Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/31533.

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Rapid prototyping systems have advanced significantly with respect to material capabilities, fabrication speed, and surface quality. However, build jobs are still manually activated one at a time. The result is non-productive machine time whenever an operator is not at hand to make a job changeover. A low-cost auxiliary system, named Continuous Layered Manufacturing (CLM), has been developed to automatically load and unload the FDM 1600 rapid prototyping system (Stratasys, Inc.). The modifications made to the FDM 1600 system are minimal. The door to the FDM 1600 build chamber is removed, and the .SML build files that are used to drive the FDM 1600 are modified at both ends to facilitate synchronized operation between the two systems. The CLM system is capable of running three consecutive build jobs without operator intervention. As long as an operator removes finished build jobs, and adds new build trays before at most every three build jobs, the FDM can operate near indefinitely. The impact of the CLM system on the productivity of the FDM 1600 rapid prototyping system is demonstrated by the expected reduction from the customary eight weeks down to a future three and one-half weeks required to complete the typical forty build jobs during a semester in the course ME 4644 Introduction to Rapid Prototyping at Virginia Tech.
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Books on the topic "Layered system"

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Béla, Pokol. The concept of law: The multi-layered legal system. Budapest: Rejtjel Edition, 2001.

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Heldman, Robert K. Global telecommunications: Layered networks' layered services. New York: McGraw-Hill, 1992.

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Heldman, Robert K. Global telecommunications: Layerednetworks' layered services. New York: McGraw-Hill, 1992.

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Anderson, George, Jamie Pittock, Daniel Connell, and Dustin Garrick. Federal rivers: Managing water in multi-layered political systems. Cheltenham: Edward Elgar, 2014.

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Greenhut, Gary G. Calibration and accuracy of the NOAA/ERL gust probe system and intercomparison with other systems. Boulder, Colo: U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, Environmental Research Laboratories, 1985.

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Sellathurai, Mathini. Space-time layered information processing for wireless communications. Hoboken, N.J: Wiley, 2009.

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Stubbs, Kevin D. Surface-based layered defense by the Soviet Navy. College Station, Tex: Center for Strategic Technology, the Texas Engineering Experiment Station of the Texas A&M University System, 1987.

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Casas, Ignacio R. Prophet: A layered analytical model for performance prediction of database systems. Toronto: Computer Systems Research Institute, University of Toronto, 1986.

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P, Müller J. The design of intelligent agents: A layered approach. Berlin: Springer, 1996.

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Environmental protection in multi-layered systems: Comparative lessons from the water sector. Leiden: M. Nijhoff Publishers, 2012.

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Book chapters on the topic "Layered system"

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Weik, Martin H. "layered system." In Computer Science and Communications Dictionary, 880. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_10019.

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Kim, Byeong Hwa. "Dynamic Characteristics of Layered Stone Pagoda System." In Lecture Notes in Civil Engineering, 676–82. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-67443-8_59.

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Osho, Oluwafemi, Farouk A. Musa, Sanjay Misra, Andrew A. Uduimoh, Adewole Adewunmi, and Ravin Ahuja. "AbsoluteSecure: A Tri-Layered Data Security System." In Communications in Computer and Information Science, 243–55. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-30275-7_19.

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Abdelhamid, Bassant, Awab Al-Habal, and Ahmed Khattab. "Energy-Efficient Layered IoT Smart Home System." In Design and Construction of Smart Cities, 170–77. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-64217-4_20.

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Choi, Soo-Jin, and Young-Rok Kim. "Bioinspired Layered Nanoclays for Nutraceutical Delivery System." In ACS Symposium Series, 207–20. Washington, DC: American Chemical Society, 2013. http://dx.doi.org/10.1021/bk-2013-1143.ch012.

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Kent, Simon. "A Layered Type System for Re-entrance Control." In Lecture Notes in Computer Science, 88–97. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-540-45213-3_12.

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Ram, Amit Kumar, and Supriya Mohanty. "Numerical Analysis of Layered Soil-Ash-Foundation System." In Lecture Notes in Civil Engineering, 339–51. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-6456-4_36.

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Namratha Manohar, J. "Sensing Layer—Layered Architecture for Efficient Operation of Intelligent Power System." In Lecture Notes in Networks and Systems, 1–15. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-2940-3_1.

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Clibbon, K., E. Edmonds, and L. Candy. "Representing Conceptual Design Knowledge with Multi-Layered Logic." In AI System Support for Conceptual Design, 93–108. London: Springer London, 1996. http://dx.doi.org/10.1007/978-1-4471-1475-8_6.

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Poddar, Arnab, Rohan Mukherjee, Jayanta Mukhopadhyay, and Prabir Kumar Biswas. "MultiDIAS: A Hierarchical Multi-layered Document Image Annotation System." In Communications in Computer and Information Science, 3–14. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-9361-7_1.

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Conference papers on the topic "Layered system"

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Rovini, M., F. Rossi, P. Ciao, N. L'Insalata, and L. Fanucci. "Layered Decoding of Non-Layered LDPC Codes." In 9th EUROMICRO Conference on Digital System Design (DSD'06). IEEE, 2006. http://dx.doi.org/10.1109/dsd.2006.63.

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Jamkhedkar, Pramod A., and Gregory L. Heileman. "DRM as a layered system." In the 4th ACM workshop. New York, New York, USA: ACM Press, 2004. http://dx.doi.org/10.1145/1029146.1029151.

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Liu, Lidie, Yin Xu, Yiyan Wu, Dazhi He, and Wenjun Zhang. "Capacity Analysis of 3-layer Layered Division Mulplexing System." In 2019 IEEE International Symposium on Broadband Multimedia Systems and Broadcasting (BMSB). IEEE, 2019. http://dx.doi.org/10.1109/bmsb47279.2019.8971843.

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Hu, Bin, Ji Gao, and Guoyong Cai. "An Autonomous Layered Normative System Framework." In 2009 WRI World Congress on Computer Science and Information Engineering. IEEE, 2009. http://dx.doi.org/10.1109/csie.2009.170.

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VAKAKIS, ALEXANDER, MICHAEL RAHEB, and CETIN CETINKAYA. "DYNAMICS OF A LAYERED ELASTIC SYSTEM." In 34th Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1993. http://dx.doi.org/10.2514/6.1993-1372.

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Hyland, John C., and Cheryl M. Smith. "System performance and layered analysis tool." In 2011 Winter Simulation Conference - (WSC 2011). IEEE, 2011. http://dx.doi.org/10.1109/wsc.2011.6147967.

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Hong, Zicong, Song Guo, Peng Li, and Wuhui Chen. "Pyramid: A Layered Sharding Blockchain System." In IEEE INFOCOM 2021 - IEEE Conference on Computer Communications. IEEE, 2021. http://dx.doi.org/10.1109/infocom42981.2021.9488747.

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Oliveira, Manuel. "Virtual environment system layered object model." In the 2004 ACM SIGCHI International Conference. New York, New York, USA: ACM Press, 2004. http://dx.doi.org/10.1145/1067343.1067367.

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Kaylor, Joe, Konstantin Laufer, and George K. Thiruvathukal. "Online Layered File System (OLFS): A layered and versioned filesystem and performance analysis." In 2010 IEEE International Conference on Electro/Information Technology (EIT 2010). IEEE, 2010. http://dx.doi.org/10.1109/eit.2010.5612094.

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Kim, Pansoo, Sung-Ik Park, Heung-Mook Kim, and Deock-Gil Oh. "Layered division multiplexing for satellite broadcasting system." In 2016 International Conference on Information and Communication Technology Convergence (ICTC). IEEE, 2016. http://dx.doi.org/10.1109/ictc.2016.7763413.

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Reports on the topic "Layered system"

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Van Cauwelaert, I. F. Stresses and Displacements in a Four Layered System with Fixed Bottom,. Fort Belvoir, VA: Defense Technical Information Center, April 1985. http://dx.doi.org/10.21236/ada156763.

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Park, Huiju, Soo-Kyung Hwang, Joo-young Lee, Jintu Fan, and Youngjin Jeong. Effectiveness of Electrical Heating for Improved Thermal Insulation of a Multi-layered Winter Clothing System. Ames: Iowa State University, Digital Repository, November 2016. http://dx.doi.org/10.31274/itaa_proceedings-180814-1573.

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Shafer, J. M., E. R. Covington, J. M. Rine, and R. C. Berg. Incorporation of groundwater flow into traditional sensitivity analysis of a southeast coastal plain layered aquifer system. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2006. http://dx.doi.org/10.4095/221895.

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Ching, Wai-Yim. Large scale simulations of the mechanical properties of layered transition metal ternary compounds for fossil energy power system applications. Office of Scientific and Technical Information (OSTI), December 2014. http://dx.doi.org/10.2172/1177774.

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Unal, Beyza, Julia Cournoyer, Calum Inverarity, and Yasmin Afina. Uncertainty and complexity in nuclear decision-making. Royal Institute of International Affairs, March 2022. http://dx.doi.org/10.55317/9781784135157.

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Complex systems modelling is already implemented in critical policy areas such as climate change and health. It could also play an important role in the nuclear weapons sphere – by opening alternative pathways that may help mitigate risks of confrontation and escalation – but such modelling has yet to be fully embraced by policymakers in this community. By applying a complexity lens, policy- and decision-makers at all stages along the nuclear chain of command might better understand how their actions could have significant consequences for international security and peace. Nuclear decision-making is shaped by, and interacts with, the ever-changing international security environment and nuclear weapons policy. Tackling problems in the nuclear weapons policy field requires the implementation of ‘system of systems’ design principles, mathematical modelling approaches and multidisciplinary analysis. This research paper presents nuclear weapons decision-making as a complex endeavour, with individual decisions being influenced by multiple factors such as reasoning, intuition (gut feeling), biases and system-level noise. At a time of crisis, these factors may combine to cause risks of escalation. The authors draw on past examples of near nuclear use to examine decision-making in the nuclear context as a ‘wicked problem’, with multi-layered, interacting and constantly fluctuating elements.
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Abdual-Razzaq, W. E. Brigham, and L. M. Castanier. Analytical steam injection model for layered systems. Office of Scientific and Technical Information (OSTI), August 1993. http://dx.doi.org/10.2172/10182399.

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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) Feature and Content Layer, intended to contain image visual features such as contours, shapes,etc.; (2) Object Layer, which provides the (conceptual) content dimension of images; and (3) Schema Layer, which contains the structured abstractions of images, i.e., a general schema about the classes of objects represented in the object layer. We propose two abstract languages on the basis of description logics: one for describing knowledge of the object and schema layers, and the other, more expressive, for making queries. Queries can refer to the form dimension (i.e., information of the Feature and Content Layer) or to the content dimension (i.e., information of the Object Layer). These languages employ a variable free notation, and they are well suited for the design, verification and complexity analysis of algorithms. As the amount of information contained in the previous layers may be huge and operations performed at the Feature and Content Layer are time-consuming, resorting to the use of materialized views to process and optimize queries may be extremely useful. For that, we propose a formal framework for testing containment of a query in a view expressed in our query language. The algorithm we propose is sound and complete and relatively efficient.
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8

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) Feature and Content Layer, intended to contain image visual features such as contours, shapes,etc.; (2) Object Layer, which provides the (conceptual) content dimension of images; and (3) Schema Layer, which contains the structured abstractions of images, i.e., a general schema about the classes of objects represented in the object layer. We propose two abstract languages on the basis of description logics: one for describing knowledge of the object and schema layers, and the other, more expressive, for making queries. Queries can refer to the form dimension (i.e., information of the Feature and Content Layer) or to the content dimension (i.e., information of the Object Layer). These languages employ a variable free notation, and they are well suited for the design, verification and complexity analysis of algorithms. As the amount of information contained in the previous layers may be huge and operations performed at the Feature and Content Layer are time-consuming, resorting to the use of materialized views to process and optimize queries may be extremely useful. For that, we propose a formal framework for testing containment of a query in a view expressed in our query language. The algorithm we propose is sound and complete and relatively efficient.
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9

Nantung, Tommy E., Jusang Lee, John E. Haddock, M. Reza Pouranian, Dario Batioja Alvarez, Jongmyung Jeon, Boonam Shin, and Peter J. Becker. Structural Evaluation of Full-Depth Flexible Pavement Using APT. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317319.

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The fundamentals of rutting behavior for thin full-depth flexible pavements (i.e., asphalt thickness less than 12 inches) are investigated in this study. The scope incorporates an experimental study using full-scale Accelerated Pavement Tests (APTs) to monitor the evolution of each pavement structural layer's transverse profiles. The findings were then employed to verify the local rutting model coefficients used in the current pavement design method, the Mechanistic-Empirical Pavement Design Guide (MEPDG). Four APT sections were constructed using two thin typical pavement structures (seven-and ten-inches thick) and two types of surface course material (dense-graded and SMA). A mid-depth rut monitoring and automated laser profile systems were designed to reconstruct the transverse profiles at each pavement layer interface throughout the process of accelerated pavement deterioration that is produced during the APT. The contributions of each pavement structural layer to rutting and the evolution of layer deformation were derived. This study found that the permanent deformation within full-depth asphalt concrete significantly depends upon the pavement thickness. However, once the pavement reaches sufficient thickness (more than 12.5 inches), increasing the thickness does not significantly affect the permanent deformation. Additionally, for thin full-depth asphalt pavements with a dense-graded Hot Mix Asphalt (HMA) surface course, most pavement rutting is caused by the deformation of the asphalt concrete, with about half the rutting amount observed within the top four inches of the pavement layers. However, for thin full-depth asphalt pavements with an SMA surface course, most pavement rutting comes from the closet sublayer to the surface, i.e., the intermediate layer. The accuracy of the MEPDG’s prediction models for thin full-depth asphalt pavement was evaluated using some statistical parameters, including bias, the sum of squared error, and the standard error of estimates between the predicted and actual measurements. Based on the statistical analysis (at the 95% confidence level), no significant difference was found between the version 2.3-predicted and measured rutting of total asphalt concrete layer and subgrade for thick and thin pavements.
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10

Brown, Nathanael J. K., Katherine A. Jones, Alisa Bandlow, Linda Karen Nozick, Lucas Waddell, Drew Levin, and Jonathan Whetzel. A Complex Systems Approach to More Resilient Multi-Layered Security Systems. Office of Scientific and Technical Information (OSTI), September 2016. http://dx.doi.org/10.2172/1431482.

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