Готові списки джерел за темами / Passive protection systems

Добірка наукової літератури з теми "Passive protection systems"

Автор: Grafiati
Опубліковано: 30 травня 2022
Оновлено: 31 травня 2022

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Статті в журналах з теми "Passive protection systems"

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Babashov, V. G., and N. M. Varrik. "Trends in the development of flexible thermal protection systems for modern aircraft." Perspektivnye Materialy, no. 11 (2020): 10–21. http://dx.doi.org/10.30791/1028-978x-2020-6-10-21.

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Анотація:
The emergence of new types of space and aviation technology necessitates the development of new types of thermal protection systems capable of operating at high temperature and long operating times. There are several types of thermal protection systems for different operating conditions: active thermal protection systems using forced supply of coolant to the protected surface, passive thermal protection systems using materials with low thermal conductivity without additional heat removal, high-temperature systems, which are simultaneously elements of the bearing structure and provide thermal protection, ablation materials. Heat protection systems in the form of rigid tiles and flexible panels, felt and mats are most common kind of heat protecting systems. This article examines the trends of development of flexible reusable heat protection systems intended for passive protection of aircraft structural structures from overheating.
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WALENTYNOWICZ, Jerzy. "PROBLEMS CONNECTED WITH PASSIVE AND ACTIVE PROTECTION OF FIGHTING VEHICLES." Scientific Journal of the Military University of Land Forces 160, no. 2 (April 1, 2011): 218–36. http://dx.doi.org/10.5604/01.3001.0002.2989.

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Basic problems relating to the passive and active protection of present fighting vehicles were introduced in this paper. The scripts of the working of armed strengths and threat what were self- characterized briefly they result from the applied at present armour-piercing guns, such armour-piercing grenade hand launcher, armour-piercing missiles, subcaliber bullets, kinetic bullets, ground mines and improvised explosive devices. Applied at present passive and reactive protections of fighting vehicles were introduced, protecting crews while hitting bullets in vehicles. The stages of detecting the threat and reaction on stepping out threats were analyzed, and this indispensable time on the effective answer of the system of the protection. The means of the counteraction were self- characterized the threats of vehicles, applied in the arrangements of the active protection. Proprieties some of worked out systems of the active protection of fighting vehicles and their basic tactical and technical parameters were introduced.
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Dammacco, Giada, Dirk Wenzel, and Christian Hennigs. "Prosys-Laser: Smart Laser Protective Textile Systems." Advances in Science and Technology 80 (September 2012): 156–62. http://dx.doi.org/10.4028/www.scientific.net/ast.80.156.

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Анотація:
“Passive” and “active” laser-protective clothing and curtains are hardly available on the market today for the use with hand-held laser processing devices (HLD) and automated laser machines. However, the fact that serious laser injuries of the skin happen shows that skin protection against laser radiation is necessary. Thus, key developments described in this paper are on the one hand highly innovative functional multi-layer technical textiles, providing a high level of passive laser resistance. On the other hand, active systems, containing functional multi-layer smart fabrics which detect laser exposure and, by means of a safety control, deactivate the laser beam automatically, are depicted. Furthermore, test methods and testing set-ups to qualify such passive and active functional technical textiles and tailored personal protective equipment (PPE) are developed. The passive laser-protective textile system will be realized using the best combination of materials, providing, at the same time, laser, fire, and heat protection together with other properties. Designing active system means the realization of functionalized fabrics and to exploit their physical properties. The electronics which interface the active system, providing signal conditioning, acquisition, on-body pre-processing, local data storage and wireless communication, is a major part of the active approach. The electronics will provide alarms and ultimately enforce laser shutdown upon defined conditions.
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N. Vinky Rahman and Elky Fernanda. "EVALUATION OF PASSIVE FIRE PROTECTION SYSTEMS IN SUPERMALL BUILDINGS." Jurnal Koridor 10, no. 1 (July 25, 2019): 12–17. http://dx.doi.org/10.32734/koridor.v10i1.1382.

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Evaluation of a passive fire protection system is an effort to find out how feasible a fire protection system is in a building. One of the main problems arising from fire hazards in mall buildings is fire protection systems that do not meet standards. This study aims to analyze the building fire protection system, with the Sun Plaza Medan case study with a total of six floors and one basement, and located in the city center. The method used in this study is descriptive qualitative and quantitative, with a variable observation stage which is then carried out by a comparison process using the Analytical Hierarchy Process. This AHP method is helpful for researchers to get the results needed. Evaluation results obtained at shopping centers (case studies: Sun Plaza Medan) can be categorized as good, although several components do not meet the standards. Several recommendations were made for changes by testing, to obtain an increase in the value of the reliability of the passive fire protection system in the case study.
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Tan, Jie, Peng Zhang, Qian Feng, and Gangbing Song. "Passive Seismic Protection of Building Piping Systems — A Review." International Journal of Structural Stability and Dynamics 20, no. 03 (February 27, 2020): 2030001. http://dx.doi.org/10.1142/s0219455420300013.

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Анотація:
Piping systems are typical nonstructural components of a building. Previous investigations have reported many cases that earthquake causes damages or failures of piping system, resulting in secondary disasters. Therefore, this paper conducts a survey of the seismic damage of the piping systems of buildings and then reviews the state-of-the-art of the passive seismic protection methods. This paper proposes to classify the building piping system into rigid connected pipes, flexible connected pipes and semi-rigid connected pipes. Typical seismic damages of building pipes are presented following this classification. Then, several current seismic protection methods (including constructional measures, seismic braces, damping techniques and base isolation methods) are discussed regarding the theoretical mechanism and feasibility. Furthermore, the state-of-the-art of the building piping system and the passive protection methods with application prospects are evaluated. Based on the review, the flexible piping systems are most commonly used in existing old buildings and are more vulnerable in earthquakes due to their high flexibility. New buildings prefer the rigid connections which tend to restrain the motion of the pipe. However, the excessive stiffness of the rigid connection may cause overlarge internal stresses in both the connection and the pipe. Semi-rigid piping systems have sufficient overall stiffness and a degree of local deform ability and thus have the best seismic performance. In future studies, more research should be devoted to propose and develop new dampers suitable for piping systems, which will improve the seismic safety of building piping systems.
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Palacios-Quiñonero, Francisco, Josep Rubió-Massegú, Josep M. Rossell, and Hamid Reza Karimi. "Distributed Passive Actuation Schemes for Seismic Protection of Multibuilding Systems." Applied Sciences 10, no. 7 (March 31, 2020): 2383. http://dx.doi.org/10.3390/app10072383.

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In this paper, we investigate the design of distributed damping systems (DDSs) for the overall seismic protection of multiple adjacent buildings. The considered DDSs contain interstory dampers implemented inside the buildings and also interbuilding damping links. The design objectives include mitigating the buildings seismic response by reducing the interstory-drift and story-acceleration peak-values and producing small interbuilding approachings to decrease the risk of interbuilding collisions. Designing high-performance DDS configurations requires determining convenient damper positions and computing proper values for the damper parameters. That allocation-tuning optimization problem can pose serious computational difficulties for large-scale multibuilding systems. The design methodology proposed in this work—(i) is based on an effective matrix formulation of the damped multibuilding system; (ii) follows an H ∞ approach to define an objective function with fast-evaluation characteristics; (iii) exploits the computational advantages of the current state-of-the-art genetic algorithm solvers, including the usage of hybrid discrete-continuous optimization and parallel computing; and (iv) allows setting actuation schemes of particular interest such as full-linked configurations or nonactuated buildings. To illustrate the main features of the presented methodology, we consider a system of five adjacent multistory buildings and design three full-linked DDS configurations with a different number of actuated buildings. The obtained results confirm the flexibility and effectiveness of the proposed design approach and demonstrate the high-performance characteristics of the devised DDS configurations.
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Vujanovic, Miodrag, Pavao Begovic, Miljko Eric, and Stojan Ninic. "Security protection and area monitoring by passive multi-sensor systems." Vojnotehnicki glasnik 52, no. 3-4 (2004): 367–78. http://dx.doi.org/10.5937/vojtehg0404367v.

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Soneji, B. B., and R. S. Jangid. "Passive hybrid systems for earthquake protection of cable-stayed bridge." Engineering Structures 29, no. 1 (January 2007): 57–70. http://dx.doi.org/10.1016/j.engstruct.2006.03.034.

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Maharani, Fandita Tonyka, Azizah Musliha Fitri, and Arga Buntara. "THE ANALYSIS OF FIRE ENGINEERING AND ADMINISTRATIVE CONTROL AT BUILDING X UNIVERSITY Y YEAR 2018." Indonesian Journal of Occupational Safety and Health 8, no. 1 (March 26, 2019): 57. http://dx.doi.org/10.20473/ijosh.v8i1.2019.57-65.

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Анотація:
Jakarta Provincial Fire and Rescue Agency mentioned that the capital approximately has 900 high building, however only 20 % of them possessed adequate safety precaution. Data from the Jakarta Provincial Fire and Rescue Agency show that in 2018, 1,106 fire cases caused economic loss worth around Rp 151,498,186,111. Building X University Y is used every day with more than 500 occupants for education purpose. The aim of this study was to analyze fire engineering and administrative controls in the building according to the standards (National Fire Protection Association standards and the Regulation of Minister of Public Works No. 26/PRT/M/2008). This study used analytical descriptive design with direct observation as study method. The study was conducted in July 2018. The study found that the building has not met the adequate standards yet, such as active and passive protection systems, and the means of the evacuation system. There were no active protection systems. The only implemented passive protection system was a compartmentation system which divided the building into cells designed to resist the fire spread when it happens. There were no other passive protection systems found in the structure. All doors and windows were made of woods and glasses. There were no means of evacuation in the building. There were no administrative controls in the building. Appropriate controls are required in the building, involving fire engineering and administrative controls because the building lack of fire protective and precaution systems.Keywords: evacuation system, fire control, protection system
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Palacios-Quiñonero, Francisco, Josep M. Rossell, Josep Rubió-Massegú, and Hamid R. Karimi. "Structural Vibration Control for a Class of Connected Multistructure Mechanical Systems." Mathematical Problems in Engineering 2012 (2012): 1–23. http://dx.doi.org/10.1155/2012/942910.

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Анотація:
A mathematical model to compute the overall vibrational response of connected multistructure mechanical systems is presented. Using the proposed model, structural vibration control strategies for seismic protection of multibuilding systems can be efficiently designed. Particular attention is paid to the design of control configurations that combine passive interbuilding dampers with local feedback control systems implemented in the buildings. These hybrid active-passive control strategies possess the good properties of passive control systems and also have the high-performance characteristics of active control systems. Moreover, active-passive control configurations can be properly designed for multibuilding systems requiring different levels of seismic protection and are also remarkably robust against failures in the local feedback control systems. The application of the main ideas is illustrated by means of a three-building system, and numerical simulations are conducted to assess the performance of the proposed structural vibration control strategies.
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Більше джерел

Дисертації з теми "Passive protection systems"

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Heater, Morgan. "Passive freeze protection for passive solar thermal DHW systems." Diss., Connect to online resource, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1435243.

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Coelho, Rodrigo Marquês. "Development of passive protection systems using cellular materials." Master's thesis, Universidade de Aveiro, 2010. http://hdl.handle.net/10773/4518.

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Fröming, Robert. "Assessment of integrated pedestrian protection systems /." Düsseldorf : VDI-Verl, 2008. http://d-nb.info/99032060X/04.

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Castillo, Alfred. "Respondent Perceived Threat During the Information Systems Requirements Determination Process: Understanding and Mitigation." FIU Digital Commons, 2017. https://digitalcommons.fiu.edu/etd/3549.

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Анотація:
Requirements determination is a critical driver in a successful software development process. Despite decades of research prescribing various software development methodologies, intended to aid in achieving an eventual convergence between the user’s mental models and an informationally equivalent representation that is codified within an information system, we can still attribute many of the deficiencies in software development projects to the improper or ineffective execution of the requirements determination process. This study draws on the user resistance, software development, and psychology literature to discuss how perceived threats by potential users and key respondents can result in sub-optimization of a proposed information system via reduction in the quality of their responses during the requirements gathering phase. A laboratory experiment was carried out to explore the sources and effects of various threat perceptions and the effectiveness of techniques intended to detect and mitigate such perceptions of threat. The results confirm that perception of threat does lead to a degradation in response quality, with perceived adaptability fully mediating the relationship. The findings on whether interviewer reassurance has a moderating effect on the relationship between threat and perceived adaptability had interesting results, which are discussed.
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Mahloo, Mozhgan. "Reliability versus Cost in Next Generation Optical Access Networks." Licentiate thesis, KTH, Optical Network Laboratory (ON Lab), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-122380.

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Анотація:
The ever increasing demands of Internet users caused by the introduction of new high bandwidth applications and online services as well as the growing number of users and devices connected to the Internet, bring many challenges for the operators, especially in the last mile section of the network. Next generation access architectures are expected to offer high sustainable bandwidth per user. They also need to support a much larger service areas to decrease number of current central offices and hence potentially save the network expenditures in the future. Obviously, it requires high capacity and low loss transmission and optical fiber technology is the only future proof candidates for broadband access. Although this technology has already been widely deployed in the core networks, it is hard to use the same expensive devices made for core segment to solve the last mile bottlenecks, due to the low number of users sharing the network resources (and deployment cost). Therefore, the next generation optical access (NGOA) networks need to be designed with consideration of cost efficiency in the first place.   Network reliability is also turning to be an important aspect for the NGOA networks as a consequence of long reach, high client count and new services requiring uninterrupted access. Consequently, new architectures not only need to be cost efficient but also they should fulfill the increasing reliability requirements.   Although several NGOA alternatives have been proposed in the literatures, there is not yet an agreement on a single architecture. As described earlier, network expenditure and reliability performance are the two main factors to be considered. Therefore, this thesis concentrates on finding a suitable alternative for future broadband access by evaluating the reliability performance and total cost of ownership for several NGOA candidates. In particular, in this thesis we analyze the tradeoff between the cost needed to deploy backup resources and the reliability performance improvement obtained by the provided survivability mechanism.   First, we identified the suitable NGOA candidates by comparing two main groups of optical access networks, namely passive optical networks (PONs) and active optical networks (AONs), in terms of cost, reliability performance and power consumption. The initial results have shown that wavelength division multiplexing PON (WDM PON) is the most promising alternative for the NGOA networks because of its high potential capacity, low cost and power consumption. So we continued our studies by investigating two WDM-based PON architectures regarding their cost and reliability performance. The study has also included a proposed fiber layout compatible with these two candidates aiming to minimize the required investment needed to offer protection. Our primary results confirmed that hybrid PON (HPON) is the best alternative for the NGOA networks. Therefore we further analyzed this candidate considering several variants of HPON. The most important components and sections of the HPON, which need to be protected to decrease the impact of each failure in the network have been identified. Based on these outcomes, two resilience architectures protecting the shared part of the HPON were proposed and their reliability performance parameters as well as cost of protection were evaluated. According to the results, using our proposed protection schemes a considerable improvement in reliability performance of the HPON variants can be provided at minor extra investment. We also introduced a cost efficient HPON architecture with different levels of protection for users with various reliability requirements, i.e. the protection of shared parts of the access network for all the connected users and end-to-end resilience scheme for some selected ones (e.g., business users). To gain an overall view on the cost efficiency of the proposed architecture, we evaluated the investment required for deploying these schemes considering several network upgrading paths towards a protected network. Moreover, a sensitivity analysis investigating the influence of network deployments time and the density of the users with higher availability requirements was presented.   In summary, we have shown that HPON is able to fulfill the main NGOA requirements such as high bandwidth per-user, large coverage and client count. The work carried out in the thesis has proved that HPON can also offer high reliability performance while keeping the network expenditures at an acceptable level. Moreover, low power consumption and high flexibility in resource allocation of this architecture, makes it a winning candidate for the NGOA networks. Therefore, HPON is a promising architecture to be deployed as NGOA network in the near future considering the fact that components are soon to be available in the market.

QC 20130530


FP7 EU project, Optical Access Seamless Evolution(OASE)
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Bishay-Girges, Nagui William. "Seismic protection of structures using passive control system." Thesis, University of Canterbury. Civil Engineering, 2004. http://hdl.handle.net/10092/7509.

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Анотація:
There is a relationship between inelastic deformation and energy dissipation in structures that are subjected to earthquake ground motions. Thus, if seismic energy dissipation can be achieved by means of a separate non-load bearing supplementary damping system, the load bearing structure can remain elastic with continuing serviceability following the design level earthquake. This research was carried out to investigate the advantages of using added damping in structures. The control system consists of passive friction dampers called ring spring dampers installed in the ground floor of the structure using a tendon to transmit the forces to the other parts of the structure. The ring springs dampers are friction devices consisting of inner and outer ring elements assembled to form a spring stack. External load applied to the spring produces sliding action across mating ring interfaces. The damping forces generated by the dampers and transferred in the supplemental system to the structure by the tendon and horizontal links oppose the internal loads. A four storey-two bay steel frame structure was used in the study. Experimental and analytical studies to investigate the effectiveness of a supplemental control system are presented. The model was subjected to a series of earthquake simulations on the shaking table in the Structural Laboratory of the Civil Engineering Department, at the University of Canterbury. The earthquake simulation tests have been performed on the structure both with and without the supplemental control system. The earthquake simulations were a series of gradually increasing intensity replications of two commonly used earthquake records. This thesis includes detailed description of the structural model, the supplemental control system, the ring springs dampers and the data obtained during the testing. Analyses were then carried out on a twelve storey framed structure to investigate the possible tendon arrangements and the size and type of dampers required to control the response of a real building. Guidelines for determining the appropriateness of including a supplemental damping system have been investigated. The main features of the supplemental control system adopted in this research are: • It is a passive control system with extreme reliability and having no dependence on external power sources to effect the control action. These power sources may not be available during a major earthquake. • Ring springs are steel friction devices capable of absorbing large amounts of input energy. No liquid leakage can occur and minimal maintenance is required for the ring spring dampers. • With a damper-tendon system, the distribution of the dampers throughout the structure is not so critical. Only one or two dampers are used to produce the damping forces needed, and forces are then transferred to the rest of the building by the tendon system. • It is a relatively inexpensive control system with a long useful life.
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Arguence, Olivier. "Modélisation des ilots non-intentionnels et caractérisation des méthodes passives de détection d’ilotage." Thesis, Université Grenoble Alpes (ComUE), 2018. http://www.theses.fr/2018GREAT045/document.

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Анотація:
Un ilot non-intentionnel peut se former lorsque d’une petite partie du réseau est déconnectée du reste du système électrique, et continue pourtant de fonctionner à l’insu du gestionnaire de réseau en raison de la présence de générateurs locaux. Cet événement n’est pas voulu : le comportement des ilots n’est pas maitrisé, ce qui entraîne des risques potentiels pour les personnes et équipements électriques. L’ilotage non-intentionnel est un phénomène complexe et mal connu, aujourd’hui considéré comme rare, mais dont la probabilité d’apparition tend actuellement, a priori, à s’accroître progressivement. Cet accroissement est dû à l’effet conjugué de plusieurs phénomènes : premièrement, le développement des installations de production de petite et moyenne puissance, raccordées directement au réseau de distribution ; deuxièmement, l’élargissement des seuils de détection qui sont utilisés dans leurs protections de découplage ; et troisièmement, l’implémentation dans ces installations d’automatismes de régulation de puissance active et réactive. Dans ce contexte, la chaire industrielle Smartgrid d’Enedis a financé ces travaux de thèse afin de mieux caractériser ces phénomènes d’ilotage et d’améliorer leur détection.Afin d’atteindre ces objectifs, une première priorité de la thèse a été d’améliorer la compréhension des ilots non-intentionnels au travers d’une approche analytique. Celle-ci a notamment permis la résolution formelle d’un modèle simple capable d’expliquer le comportement en fréquence d’un îlot. Ces résolutions ont été enrichies par de nombreuses expérimentations en laboratoire et par des simulations numériques. Les modèles ont fait l’objet d’une étude bibliographique approfondie, notamment pour le choix des modèles de charge.Une seconde priorité de la thèse a été d’estimer l’efficacité des méthodes passives de détection d’ilotage au travers du calcul de la zone de non-détection (ZND). L'influence de plusieurs charges sur la ZND a été analysé, ce qui a permis d’améliorer la compréhension du phénomène complexe que sont les ilots non-intentionnels. L’efficacité des nouvelles protections anti-ilotage utilisant des seuils sur la dérivée en fréquence (ROCOF) a aussi fait l’objet d’évaluations approfondies. Enfin, les méthodes de calcul de ZND ont été améliorés par rapport aux méthodes préexistantes, ce qui a permis de radicalement améliorer l’estimation faite de l'impact des nouvelles régulations de puissance P(f) et Q(U)
Unintentional islands might appear when a subpart of the grid is disconnected from the power system and keeps working because of local generation. These events are unwanted: their behavior is not controlled and leads to potential risks for people and for electric equipment. Unintentional islanding is a complex phenomenon and badly understood. Nowadays it is considered to be rare, but a priori its occurrence probability is currently steadily increasing. This rising is the consequence of several phenomena: firstly, the development of distributed generation of small and average size directly connected to the distribution grid; secondly, the enlargement of frequency thresholds used by isolating protections; and thirdly, the implementation of power regulations of active and reactive power in the generation unit. Within this context, the Smart Grid chair of Enedis financed this PhD thesis in order to better characterize these islanding phenomena and to improve their detection.To achieve these targets, a first priority of the PhD was to improve the comprehension of unintentional islanding through symbolic calculation. This approach makes it possible to solve a simple model and to explain the evolution of the frequency during an island. These results are completed with several laboratory experiments and by numeric simulations. Models are designed based on a thorough bibliography, in particular for load modeling.A second priority of the PhD was to estimate the efficiency of anti-islanding protections through the computation of non-detection zone (NDZ). The impact of several loads on the NDZ is analyzed to improve the understanding of unintentional islanding, which is a complex phenomenon. The efficiency of new anti-islanding protections using thresholds on the rate of change of frequency (ROCOF) is also thoroughly evaluated. It is shown that the computation method used by the protection plays a key role. At last, the calculation methods of the NDZ is improved regarding previous methods. Among other things, it allows to radically change the estimations of the impact of new power regulations P(f) and Q(U)
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Moreno, Barbosa Andrés Dario. "Passage à l’échelle des systèmes de recommandation avec respect de la vie privée." Thesis, Nice, 2014. http://www.theses.fr/2014NICE4128/document.

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Анотація:
L'objectif principal de la thèse est de proposer une méthode de recommandation prenant en compte la vie privée des utilisateurs ainsi que l'évolutivité du système. Pour atteindre cet objectif, une technique hybride basée sur le filtrage par contenu et le filtrage collaboratif est utilisée pour atteindre un modèle précis de recommandation, sous la pression des mécanismes visant à maintenir la vie privée des utilisateurs. Les contributions de la thèse sont trois : Tout d'abord, un modèle de filtrage collaboratif est défini en utilisant agent côté client qui interagit avec l'information sur les éléments, cette information est stockée du côté du système de recommandation. Ce modèle est augmenté d’un modèle hybride qui comprend une stratégie basée sur le filtrage par contenu. En utilisant un modèle de la connaissance basée sur des mots clés qui décrivent le domaine de l'article filtré, l'approche hybride augmente la performance de prédiction des modèles sans élever l’effort de calcul, dans un scenario du réglage de démarrage à froid. Finalement, certaines stratégies pour améliorer la protection de la vie privée du système de recommandation sont introduites : la génération de bruit aléatoire est utilisée pour limiter les conséquences éventuelles d'une attaque lorsque l'on observe en permanence l'interaction entre l'agent côté client et le serveur, et une stratégie basée sur la liste noire est utilisée pour s’abstenir de révéler au serveur des interactions avec des articles que l'utilisateur considère comme pouvant transgresser sa vie privée. L'utilisation du modèle hybride atténue l'impact négatif que ces stratégies provoquent sur la performance prédictive des recommandations
The main objective of this thesis is to propose a recommendation method that keeps in mind the privacy of users as well as the scalability of the system. To achieve this goal, an hybrid technique using content-based and collaborative filtering paradigms is used in order to attain an accurate model for recommendation, under the strain of mechanisms designed to keep user privacy, particularly designed to reduce the user exposure risk. The thesis contributions are threefold : First, a Collaborative Filtering model is defined by using client-side agent that interacts with public information about items kept on the recommender system side. Later, this model is extended into an hybrid approach for recommendation that includes a content-based strategy for content recommendation. Using a knowledge model based on keywords that describe the item domain, the hybrid approach increases the predictive performance of the models without much computational effort on the cold-start setting. Finally, some strategies to improve the recommender system's provided privacy are introduced: Random noise generation is used to limit the possible inferences an attacker can make when continually observing the interaction between the client-side agent and the server, and a blacklisted strategy is used to refrain the server from learning interactions that the user considers violate her privacy. The use of the hybrid model mitigates the negative impact these strategies cause on the predictive performance of the recommendations
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Tsutsumi, Takuya. "Field Measurement and Analysis of Next-Generation Optical Access Network with Optical Amplifiers." Kyoto University, 2018. http://hdl.handle.net/2433/232417.

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Plantard, Guillaume. "Etre jeune adulte diplômé et allocataire du Revenu de Solidarité Active (RSA) : des modes et des trajectoires de vie, en périphérie du salariat, entre tensions et négociations." Thesis, Strasbourg, 2016. http://www.theses.fr/2016STRAG021/document.

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Cette thèse analyse les tensions vécues et les négociations menées, au quotidien, par des jeunes diplômés, en prenant en compte leurs parcours de formation et le recours au RSA. Partant d’entretiens et de récits, la recherche porte sur les processus socio-biographiques, avec leurs nombreuses transformations identitaires et relationnelles. Une typologie des modes de vie a d’abord été construite pour décrire les multiples usages du RSA pratiqués au quotidien. Une analyse des parcours dans le dispositif a permis ensuite de saisir les manières dont ces jeunes renégociaient les usages du RSA avec leur entourage proche et avec les professionnels chargés de l'accompagnement des allocataires. Enfin cette thèse montre que le recours au RSA représente une expérience sociale marquante pour des jeunes diplômés, sortis de l'enseignement supérieur et confrontés à la précarité professionnelle, notamment dans la manière dont ils vivent leurs transitions sociales vers la vie adulte
This thesis analyzes the lived tensions and negotiations conducted on a daily basis by young graduates, taking into account their training program and the use of RSA. Starting with interviews and stories, research focuses on socio-biographical process, with their many identities and relational transformations. A typology of lifestyles was first constructed to describe the multiple uses of RSA practiced daily. An analysis of the course in the device was then used to grasp the ways in which these young renegotiating uses RSA with their entourage and the professionals responsible for the accompaniment of the beneficiaries. Finally, this thesis shows that the use of RSA represents a significant social experience for young graduates, out of higher education and faced with job insecurity, particularly in the way they live their social transitions to adulthood
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Книги з теми "Passive protection systems"

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Kolovsky, M. Z. Nonlinear dynamics of active and passive systems of vibration protection. New York: Springer Verlag, 1999.

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Kolovsky, Mikhail Z. Nonlinear Dynamics of Active and Passive Systems of Vibration Protection. Berlin, Heidelberg: Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/978-3-540-49143-9.

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Roughan, Matthew. Passive and Active Measurement: 14th International Conference, PAM 2013, Hong Kong, China, March 18-19, 2013. Proceedings. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013.

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King, David James. Passive protection for controlling access to information in a shared file storage system. Birmingham: University of Birmingham, 1987.

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Kaminski, Darrell F. PASCON, an expert system for passive snow control on highways. Albany, N.Y: Engineering Research and Development Bureau, New York State Dept. of Transportation, 1991.

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Electronics technology handbook. New York: McGraw-Hill, 1999.

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Kolovsky, Michail Z., and A. K. Belyaev. Nonlinear Dynamics of Active and Passive Systems of Vibration Protection. Springer, 2013.

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8

Availability and Properties of Passive and Active Fire Protection Systems (Offshore Technology Information). Health and Safety Executive (HSE), 1992.

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Kolovskii, M. Z. Nonlinear Dynamics of Active and Passive Systems of Vibration Protection (Foundations of Engineering Mechanics). Springer-Verlag Telos, 1999.

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Vivancos, Roberto, Giovanni Leonardi, and Alex J. Elliott. Health protection surveillance. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780198745471.003.0021.

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This chapter provides a broad definition of surveillance in relation to health protection, including infections, environmental hazards, and health delivery. Surveillance systems include active, passive, and sentinel surveillance, and guidelines are provided for assessing the quality of surveillance data. Surveillance tools include the statutory notification of diseases, laboratory reporting, and prevalence surveys. In addition, syndromic surveillance, the (near) real-time collection of data has become increasingly used, facilitated by increasing use of digital data collection within health care settings and the availability of other digital data sources (e.g. social media). Other surveillance types include event-based surveillance (e.g. during major sporting events), and environmental surveillance, including food related disease, air pollution and chemical hazards. The chapter finally brings these together in integrated surveillance and the use of such surveillance in health planning and assessment.
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Частини книг з теми "Passive protection systems"

1

Thoft-Christensen, P., and F. M. Jensen. "Reliability based optimization of passive fire protection on offshore topsides." In Systems modelling and optimization, 309–17. Boca Raton: Routledge, 2022. http://dx.doi.org/10.1201/9780203737422-39.

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Wismans, Jac. "Models in Injury Biomechanics for Improved Passive Vehicle Safety." In Crashworthiness of Transportation Systems: Structural Impact and Occupant Protection, 221–36. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5796-4_10.

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Jung, Hyung Jo, Dong Doo Jang, Heon Jae Lee, and Seok Jun Moon. "Experimental Investigation of Effectiveness of Smart Passive System for Seismic Protection of Building Structures." In Emboding Intelligence in Structures and Integrated Systems, 355–62. Stafa: Trans Tech Publications Ltd., 2008. http://dx.doi.org/10.4028/3-908158-13-3.355.

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Shamir, Adi. "Protecting Smart Cards from Passive Power Analysis with Detached Power Supplies." In Cryptographic Hardware and Embedded Systems — CHES 2000, 71–77. Berlin, Heidelberg: Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/3-540-44499-8_5.

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Speziale, Valerio. "Il ‘diritto dei valori’. La tirannia dei valori economici e il lavoro nella Costituzione e nelle fonti europee." In Studi e saggi, 125–63. Florence: Firenze University Press, 2022. http://dx.doi.org/10.36253/978-88-5518-484-7.09.

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After analysing the different meanings of the term «value» and the passage from juridical positivism to «the right of values» (described in its essential characteristics), the essay points out the constitutional principles of labour in the Italian Constitution and in the European legal sources. The evolution of the legislation enacted in the last few years (mainly since the last decade of the twentieth century) shows that Labour Law has been functionalized to reaching economic targets, creating a «tyranny of values», according to Carl Schmitt’s theory. However, the supremacy of economic values which has influenced the legislation is in contrast with the principles of Labour protection established in the Constitution, in the European legal sources and in the Charts of fundamental rights. Such principles, in the light of the rules of interpretation of these legal texts, impose different legal disciplines. They are also based on the interpretations of the Constitutional Court which define labour as a fundamental right of man and require a «personalistic» rather than a «mercantile» vision of Labour Law protection. Also the European legal sources protect labour to a similar extent to the Italian Constitution, with specific reference to the European Social Chart. However if, as expressed by some decisions of the Court of Justice, we should sustain that the law of the European Union does not express the same «idea of work» as our Constitution, this situation would not justify the prevalence of the economic dimension of labour. In fact, the Italian Constitutional Court has recently stated that the principles established by the European legislation must be «harmonized and balanced» with those contained in the Constitution, in order to ensure «the highest protection of rights at a systemic level» (judgement no. 269/2017). Such harmonization does not allow economic values to prevail over some es- sential labour characteristics (such as dignity, freedom of expression, safety, equal conditions of labour and remuneration, etc.) with which the human personality is formed.
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Winterberg, Ralf, and Richard Dietze. "Efficient passive fire protection systems for high performance shotcrete." In Shotcrete: More Engineering Developments, 275–90. CRC Press, 2004. http://dx.doi.org/10.1201/9780203023389-31.

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Winterberg, R., and R. Dietze. "Efficient passive fire protection systems for high performance shotcrete." In Shotcrete: More Engineering Developments, 275–90. Taylor & Francis, 2004. http://dx.doi.org/10.1201/9780203023389.ch31.

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Strobl, Tobias, Stefan Storm, and Salvatore Ameduri. "Synergic Effects of Passive and Active Ice Protection Systems." In Morphing Wing Technologies, 841–64. Elsevier, 2018. http://dx.doi.org/10.1016/b978-0-08-100964-2.00026-5.

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Róka, Rastislav. "Converged Fi-Wi Passive Optical Networks and Their Designing Using the HPON Network Configurator." In Paving the Way for 5G Through the Convergence of Wireless Systems, 150–84. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-7570-2.ch006.

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With the emerging mobile applications and needs of ever-increasing bandwidth, it is anticipated that the next-generation passive optical network (NG-PON) with much higher bandwidth is a natural path forward to satisfy these demands and to develop valuable converged fiber-wireless access networks for wireless network operators. NG-PON systems present optical access infrastructures to support various applications of many service providers. Hybrid passive optical networks (HPON) present a necessary phase to future PON networks utilized the optical transmission medium – the optical fiber. For developing hybrid passive optical networks, there exist various architectures and directions. They are specified with emphasis on their basic characteristics. For proposing reliable and survivable architectures, traffic protection schemes must be implemented. For converging Fi-Wi passive optical networks, an integration of optical and wireless technologies into common broadband access network must be considered. Finally, the HPON network configurator as the interactive software tool is introduced.
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B., Rajitha. "Intelligent Vision-Based Systems for Public Safety and Protection via Machine Learning Techniques." In Handbook of Research on Machine Learning Techniques for Pattern Recognition and Information Security, 1–17. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-3299-7.ch001.

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Abnormal behavior detection from on-line/off-line videos is an emerging field in the area of computer vision. This plays a vital role in video surveillance-based applications to provide safety for humans at public places such as traffic signals, shopping malls, railway stations, etc. Surveillance cameras are meant to act as digital eyes (i.e., watching over activities at public places) and provide security. There are a number of cameras deployed at various public places to provide video surveillance, but in reality, they are used only after some incident has happened. Moreover, a human watch is needed in order to detect the person/cause of the incident. This makes surveillance cameras passive. Thus, there is a huge demand to develop an intelligent video surveillance system that can detect the abnormality/incident dynamically and accordingly raise an alarm to the nearest police stations or hospitals as per requirement. If AI-supported CCTV systems are deployed at commercial and traffic areas, then we can easily detect the incidents/crimes, and they can be traced in minimal time.
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Тези доповідей конференцій з теми "Passive protection systems"

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Chaumette, D. "Passive Thermal Protection Systems for HERMES." In Aerospace Vehicle Conference. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1988. http://dx.doi.org/10.4271/880927.

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Kulpa, K., M. Malanowski, J. Misiurewicz, and P. Samczynski. "Passive radar for strategic object protection." In 2011 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems (COMCAS). IEEE, 2011. http://dx.doi.org/10.1109/comcas.2011.6105922.

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Graswald, Markus, Raphael Gutser, Jakob Breiner, Florian Grabner, Timo Lehmann, and Andrea Oelerich. "Defeating Modern Armor and Protection Systems." In 2019 15th Hypervelocity Impact Symposium. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/hvis2019-050.

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Abstract An open source research and vulnerability study of main battle tanks and their protections systems revealed that current anti-tank weapons may not be suited to defeat modern threats. One example is the novel T-14 tank being developed and tested in the Russian army with its combined hard-kill and soft-kill active protection system AFGANIT / SHTORA, its new reactive armor MALACHIT as well as improved multi-component passive armor. Additionally, modern active protection systems currently developed in, e.g., Israel, the United States, and Germany feature also multi-sensor and multi-effector systems with drastically improved detection and intercept ranges, short system reaction times as well as protection against multiple threats attacking simultaneously and / or from similar directions. While known effectors and concepts may overcome fielded active protections systems, they are probably not suited in defeating such modern and even future systems. Countermeasures relying on high engagement velocities through improved kinetic energy projectiles or hypervelocity penetrators may provide a potential solution. Another promising concept generates directed, far-distance electromagnetic effects defeating sensors and communications systems of modern main battle tanks. After such a mission kill, a following salvo attack through an anti-tank or modern multi-role weapon will eventually lead to a catastrophic kill. Feasibility studies of these mobile electromagnetic effectors have already shown their high potential.
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Steinfeld, David E., and Allen N. Blaser. "Passive Freeze Protection for the International Space Station Photovoltaic Radiators." In International Conference On Environmental Systems. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1998. http://dx.doi.org/10.4271/981731.

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Raney, Glenn A., and Angela E. Summers. "High Integrity Protection Systems and Pressure Relief Systems." In ASME 1999 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/imece1999-1156.

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Abstract Many Users are applying high integrity protection systems (HIPS) for overpressure protection of vessels and pipelines. HIPS can be an excellent alternative to standard, passive protection systems, if they are designed correctly. Various standards are applicable when HIPS are used in lieu of pressure relief valves. This paper will address the design issues, as well as the applicable industry standards.
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Buccella, Pietro, Camillo Stefanucci, Jean-Michel Sallese, and Maher Kayal. "Spice simulation of passive protection in smart power ICs." In 2015 MIXDES - 22nd International Conference "Mixed Design of Integrated Circuits & Systems". IEEE, 2015. http://dx.doi.org/10.1109/mixdes.2015.7208571.

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Kulyukhin, S. A., N. B. Mikheev, L. N. Falkovskii, L. A. Reshetov, M. Ya Zvetkova, V. P. Osipov, I. V. Yagodkin, et al. "New Approach for Environmental Protection During Severe Accidents at Nuclear Power Plants." In 17th International Conference on Nuclear Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/icone17-75518.

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This paper reports new approaches for increasing environmental protection during severe accidents at NPPs. For NPPs with two protective shells and pressure release system such as WWER-1000 we suggest a new comprehensive, passive-mode environmental protection system of decontamination of the radioactive air-steam mixture from the containment and the intercontainment area, which includes the “wet” stage (scrubbers, etc.), the “dry” stage (sorption module), and also an ejector, which in a passive mode is capable of solving the multi-purpose task of decontamination of the air-steam mixture. For Russian WWER-440/V-230 NPPs we suggest three protection levels: 1) a jet-vortex condenser; 2) the spray system; 3) a sorption module. For modern designs of new generation NPPs, which do not provide for pressure release systems, we proposed a new passive filtering system together with the passive heat-removal system, which can be used during severe accidents in case all power supply units become unavailable.
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Zoulias, James B., and M. L. Nuckols. "Innovative Concepts in Diver Thermal Protection." In ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-1260.

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Abstract Passive methods of protecting a diver from cold exposures are constantly being sought as alternatives to active heating systems. All passive thermal protection techniques share one common advantage over their active heating counterparts; they have no requirement for energy storage or energy distribution. This advantage tends to make passive protection less complex and usually less expensive. Unfortunately in severe cold water, passive systems have customarily required divers to use thick, layered insulating garments worn beneath waterproof diving suits to reduce the loss of body heat to the surrounding cold water. These suits tend to be excessively bulky — inhibiting diver mobility; inherently buoyant — requiring 40–60 pounds of lead weights to make the diver neutrally buoyant; difficult to keep waterproof — an uncertainty that could fatally reduce the diver’s thermal protection during long duration missions; and only minimally effective in protecting the divers’ extremities. Even the best conventional drysuits have been found to be inadequate to meet the full requirements for long duration missions in near freezing waters. The objective of the research reported in this paper has been to provide the diving community with improvements in thermal protection for long duration, cold water missions. The unconventional approach proposed here, the use of liquids as an insulating medium for divers’ suits, shows promise as a means of significantly surpassing the performance, and acceptable durations, of conventional drysuits. Laboratory testing of conceptual insulating concepts are reported.
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Conti, M., C. Moscardini, and A. Capria. "SMARP Passive Radar for Harbour Protection and Navigation Safety: Trials Results." In International Conference on Radar Systems (Radar 2017). Institution of Engineering and Technology, 2017. http://dx.doi.org/10.1049/cp.2017.0414.

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Badrinath, Ashwin Srinivas, and Sumukha V. Udupa. "Protection circuitry and passive balancing for battery management systems part I." In 2017 International Conference on Computation of Power, Energy Information and Commuincation (ICCPEIC). IEEE, 2017. http://dx.doi.org/10.1109/iccpeic.2017.8290419.

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Звіти організацій з теми "Passive protection systems"

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Tayeb, Shahab. Protecting Our Community from the Hidden Vulnerabilities of Today’s Intelligent Transportation Systems. Mineta Transportation Institute, May 2022. http://dx.doi.org/10.31979/mti.2022.2132.

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The ever-evolving technology interwoven into the transportation industry leaves it frequently at risk for cyber-attacks. This study analyzes the security of a common in-vehicle network, the Controller Area Network (CAN), standard in most vehicles being manufactured today. Like many other networks, CAN comes with inherent vulnerabilities that leave CAN implementations at risk of being targeted by cybercriminals. Such vulnerabilities range from eavesdropping, where the attacker can read the raw data traversing the vehicle, to spoofing, where the attacker can place fabricated traffic on the network. The research team initially performed a simulation of CAN traffic generation followed by hardware implementation of the same on a test vehicle. Due to the concealed and untransparent nature of CAN, the team reverse-engineered the missing parameters through a series of passive "sniffing attacks" (attacks using data reading utilities called packet sniffers) on the network and then demonstrated the feasibility of the attack by placing fabricated frames on the CAN.
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Lopez, G., and G. Snitchler. Study of passive and active protection system for the SSC (Superconducting Super Collider) R D dipole magnet. Office of Scientific and Technical Information (OSTI), June 1990. http://dx.doi.org/10.2172/6515936.

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Bar-Joseph, Moshe, William O. Dawson, and Munir Mawassi. Role of Defective RNAs in Citrus Tristeza Virus Diseases. United States Department of Agriculture, September 2000. http://dx.doi.org/10.32747/2000.7575279.bard.

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This program focused on citrus tristeza virus (CTV), the largest and one of the most complex RNA-plant-viruses. The economic importance of this virus to the US and Israeli citrus industries, its uniqueness among RNA viruses and the possibility to tame the virus and eventually turn it into a useful tool for the protection and genetic improvement of citrus trees justify these continued efforts. Although the overall goal of this project was to study the role(s) of CTV associated defective (d)-RNAs in CTV-induced diseases, considerable research efforts had to be devoted to the engineering of the helper virus which provides the machinery to allow dRNA replication. Considerable progress was made through three main lines of complementary studies. For the first time, the generation of an engineered CTV genetic system that is capable of infecting citrus plants with in vitro modified virus was achieved. Considering that this RNA virus consists of a 20 kb genome, much larger than any other previously developed similar genetic system, completing this goal was an extremely difficult task that was accomplished by the effective collaboration and complementarity of both partners. Other full-length genomic CTV isolates were sequenced and populations examined, resulting in a new level of understanding of population complexities and dynamics in the US and Israel. In addition, this project has now considerably advanced our understanding and ability to manipulate dRNAs, a new class of genetic elements of closteroviruses, which were first found in the Israeli VT isolate and later shown to be omnipresent in CTV populations. We have characterized additional natural dRNAs and have shown that production of subgenomic mRNAs can be involved in the generation of dRNAs. We have molecularly cloned natural dRNAs and directly inoculated citrus plants with 35S-cDNA constructs and have shown that specific dRNAs are correlated with specific disease symptoms. Systems to examine dRNA replication in protoplasts were developed and the requirements for dRNA replication were defined. Several artificial dRNAs that replicate efficiently with a helper virus were created from infectious full-genomic cDNAs. Elements that allow the specific replication of dRNAs by heterologous helper viruses also were defined. The T36-derived dRNAs were replicated efficiently by a range of different wild CTV isolates and hybrid dRNAs with heterologous termini are efficiently replicated with T36 as helper. In addition we found: 1) All CTV genes except of the p6 gene product from the conserved signature block of the Closteroviridae are obligate for assembly, infectivity, and serial protoplast passage; 2) The p20 protein is a major component of the amorphous inclusion bodies of infected cells; and 3) Novel 5'-Co-terminal RNAs in CTV infected cells were characterized. These results have considerably advanced our basic understanding of the molecular biology of CTV and CTV-dRNAs and form the platform for the future manipulation of this complicated virus. As a result of these developments, the way is now open to turn constructs of this viral plant pathogen into new tools for protecting citrus against severe CTV terms and development of virus-based expression vectors for other citrus improvement needs. In conclusion, this research program has accomplished two main interconnected missions, the collection of basic information on the molecular and biological characteristics of the virus and its associated dRNAs toward development of management strategies against severe diseases caused by the virus and building of novel research tools to improve citrus varieties. Reaching these goals will allow us to advance this project to a new phase of turning the virus from a pathogen to an ally.
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