Dissertations / Theses on the topic 'Confined space'
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MACCARRON, Ciaran, and ciaran maccarron@watercorporation com au. "CONFINED SPACE FATALITIES." Edith Cowan University. Computing, Health And Science: School Of Exercise, Biomedical & Health Science, 2006. http://adt.ecu.edu.au/adt-public/adt-ECU2007.0023.html.
Full textMacCarron, Ciaran. "Confined space fatalities." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2006. https://ro.ecu.edu.au/theses/81.
Full textVetromile, Carissa Marie. "Probing Molecules in Confined Space." Scholar Commons, 2011. http://scholarcommons.usf.edu/etd/3393.
Full textElrabei, Abubakar Osman Zina <1994>. "Supramolecular Catalysis in Confined Nano-space." Master's Degree Thesis, Università Ca' Foscari Venezia, 2022. http://hdl.handle.net/10579/20687.
Full textTyagi, Ashok K. "Jet to jet impingement in a confined space." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ30117.pdf.
Full textBenesch, Thorben. "Like-charge attraction of colloidal particles in confined space." Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/21261.
Full textGwizadła, Wojciech. "The dynamics of nCB liquid crystals in confined space : computer simulation." Doctoral thesis, Katowice : Uniwersytet Śląski, 2013. http://hdl.handle.net/20.500.12128/5458.
Full textLai, Peng. "Mesoporous Silica Nanowires by Space-confined Organic-Inorganic Hybrid Self-Assembly." University of Cincinnati / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1172113649.
Full textAlabdullatif, Abdulrahman M. "Impact of Lighting on Human Biomechanical Response During Lifting in Confined Spaces." University of Cincinnati / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1479809352830833.
Full textSanandaji, Nima. "Innate Confinement Effects in PCL Oligomers as a Route to Confined Space Crystallisation." Licentiate thesis, KTH, Fibre and Polymer Technology, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-11305.
Full textIn this work, an in-depth analysis of crystalline characteristics has been performed for a unique set of strictly monodisperse poly-ε-caprolactone (PCL) oligomers. The molecules have different sets of end groups with various degrees of bulkiness and hydrogen bonding potential, affecting their aptitude to pack in ordered crystal structures. The oligomers also have different numbers of repeating units (n = 2-64), affecting the degree to which end groups influence overall molecular characteristics. The presence of bulky end groups leads to an innate confinement effect on crystallisation which in turn makes it possible to utilize the set of PCL oligomers to study confined space crystallisation. Confined space crystallisation is explored as a route to gain further understanding about the early metastable phases in crystal formation.
The monodisperse nature of the samples made it possible to collect very precise small-angle and wide-angle X-ray scattering data (SAXS and WAXS) as well as calorimetric data. Computer modeling studies were performed to support experimental findings. It was shown that end groups strongly affected crystallisation features for the shorter oligomers (n ≤ 8) but to a lesser extend for the longer oligomers (n ≥ 16). The presence of a bulky end group at one end of an oligomer could inhibit the formation of hydrogen bonds on the other end. Short oligomers (n = 8) with OH-end groups exhibited novel packing characteristics. At one isothermal crystallisation temperature the molecules exhibited not only lamellar ordering but also an additional, likely rectangular or slanted, ordering. The sample was packed in a unique structure with molecular chains lying parallel but not aligned head to head with each other. At a higher crystallisation temperature the molecules packed in a double layered structure and at an even higher temperature in a typical non-folded but tilted single-molecular layer pattern.
Unit cell determination was performed for a short oligomer with two bulky end groups, showing the existence of a tetragonal unit cell with different dimensions than the orthorhombic unit cells previously reported for linear PCL without end groups. To gain greater insight into the earliest stages of molecular packing, in situ WAXS measurements were performed using a synchrotron radiation beam and measuring data each 12 s whilst very slowly going from melt to isothermal crystallisation. It was shown that the crystal unit cell was distorted during the first minutes of slow crystallisation, which might either represent a metastable phase or else a highly distorted orthorhombic phase.
Cuadrado-Collados, Carlos. "Formation and growth of CH4 hydrates in the confined space of porous materials." Doctoral thesis, Universidad de Alicante, 2020. http://hdl.handle.net/10045/115062.
Full textDe, Wet Sarel Joubert. "Development of a system for tracking objects in a confined space / S.J. de Wet." Thesis, North-West University, 2009. http://hdl.handle.net/10394/4010.
Full textNewman, Timothy. "Causes of confined space hypoxia during underground construction in the Lambeth Group beneath London." Thesis, Imperial College London, 2013. http://hdl.handle.net/10044/1/24128.
Full textLützow, Joel, and Cecilia Mikiver. "Simulation of airborne transmission of infection in a confined space using an agent-based model." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-280336.
Full textNär världen observerar en ny pandemi, COVID-19, är det tydligt att patogener kan spridas fort och utan hänsyn till landsgränser. Utbrott kommer att fortsätta ske och därför måste sjukdomarnas överföringsmetod förstås, så att deras påverkan kan minimeras. Det är känt att vissa infektioner, såsom influensa, tuberkulos och mässling kan spridas via droppkärnor i luften. I ett begränsat utrymme kan koncentrationen växa när fler droppar tillförs. Denna studie utvärderar ett simulerat begränsat utrymme modellerat som ett väntrum på ett sjukhus, där människor som kan ha underliggande sjukdomar samlas och beblandar sig med potentiellt smittsamma individer. Inverkan av volymen av väntrummet, antalet personer i rummet, var de var placerade i rummet samt deras vikt undersöktes också. Simuleringen är en agent-baserad modell (ABM), en beräkningsmodell med syftet att analysera ett system genom handlingarna och kumulativa konsekvenserna av självstyrande agenter. Personer med olika kroppsvikt som kan röra sig, andas och hosta i ett ventilerat rum simuleras i denna ABM. Efterforskning av aktuella epidemiologiska modeller leder till hypotesen att en sådan skulle kunna implementeras som en motsvarande ABM, där den möjligtvis också kan förbättras. I denna rapport kommer det att uppvisas att alla parametrar av Gammaitonioch Nucci-modellen kan tas hänsyn till i en ABM via MASON biblioteket. Därtill produceras bevis som pekar på att vissa brister i den epidemiologiska modellen kan hämmas i denna ABM. Det demonstreras att den konstruerade modellen kan beakta distansen mellan mottagliga personer och smittsamma, vilket är en känd begränsning i originalmodellen.
Lee, Sinhea. "Goshiwon of Noryangjin: A Preliminary Study of Goshiwon and the Effects of its Confined Spatial Environment." University of Cincinnati / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1595849975913461.
Full textKnossalla, Johannes [Verfasser], Ferdi [Gutachter] Schüth, and Wolfgang [Gutachter] Schuhmann. "Utilizing confined space to attain high performance catalysts and support materials / Johannes Knossalla ; Gutachter: Ferdi Schüth, Wolfgang Schuhmann." Bochum : Ruhr-Universität Bochum, 2017. http://d-nb.info/1144614252/34.
Full textBotti, Lucia. "The Impact of Occupational Safety on Logistics and Automation in Industrial Plants." Doctoral thesis, Università degli studi di Padova, 2017. http://hdl.handle.net/11577/3422406.
Full textL'attività di ricerca in materia di salute e sicurezza negli ambienti di lavoro analizza l'integrazione tra le attività lavorative e la sicurezza, la salute e il benessere dei lavoratori. Lo scopo di tale scienza è di realizzare un ambiente di lavoro sano e sicuro, eliminando o riducendo i rischi per la salute e la sicurezza dei lavoratori. L'obiettivo di questa tesi è lo studio, l'integrazione, lo sviluppo e l'applicazione di approcci innovativi e modelli di supporto alle decisioni in merito alla sicurezza occupazionale negli impianti industriali e nella logistica. Tali metodi vogliono essere una guida per chi mette in pratica i principi della sicurezza nei luoghi di lavoro, quali aziende e professionisti della sicurezza, e coloro che sono chiamati a prendere decisioni in merito alla gestione della sicurezza dei lavoratori. In particolare, questa ricerca si focalizza sull'integrazione e l'applicazione dei principi dell'ergonomia per la riduzione del sovraccarico biomeccanico dovuto alle attività manuali, e di metodi e soluzioni per migliorare la sicurezza del lavoro negli ambienti confinati presenti negli impianti industriali. Lo studio del sovraccarico biomeccanico dovuto alla movimentazione manuale dei carichi e alle posture incongrue è l'obiettivo di numerose ricerche e pubblicazioni in merito alla valutazione del rischio ergonomico e all'approccio ergonomico per la rimozione e la riduzione del rischio d'infortuni e malattie professionali legate alla movimentazione manuale dei carichi. Inoltre, quando le posture incongrue sono assunte all'interno di ambienti lavorativi ad alto rischio, quali gli ambienti confinati, il rischio complessivo del lavoro diventa molto elevato. Il lavoro all'interno degli ambienti confinati è un'attività a elevato rischio, che espone sia i lavoratori che i possibili soccorritori coinvolti nella risposta d'emergenza a un elevato pericolo. La causa principale degli infortuni e degli incidenti mortali all'interno degli ambienti confinati è la condizione atmosferica presente nell'ambiente. Altre cause frequenti sono il fuoco, esplosione, presenza di contaminanti infiammabili, combustione spontanea e contatto con temperature elevate. Inoltre, l'attività lavorativa negli ambienti confinati (es., saldatura e manutenzione) richiede spesso posture statiche ed incongrue, mantenute in presenza di elevate temperature. Questa tesi sottolinea l'importanza dell'attuazione tempestiva degli interventi per il miglioramento delle condizioni di salute e sicurezza sul posto di lavoro. Questi interventi hanno un impatto non solo a livello aziendale, ma anche a livello individuale e sociale. Inoltre, la protezione del lavoratore è questione di diritti umani, e la vita umana ha un valore inestimabile. In questa tesi, emerge chiaramente il ruolo della strategia di gestione della sicurezza sul lavoro come mezzo per il miglioramento dei lavoratori e delle prestazioni aziendali. Due ambiti di ricerca in materia di sicurezza sul lavoro sono approfonditi parallelamente: l'ergonomia delle posture, dei movimenti e delle postazioni di lavoro, e le attività negli ambienti confinati. Saranno mostrati dati numerici e casistiche relative agli infortuni e alle malattie dovute al sovraccarico biomeccanico e al lavoro negli ambienti confinati, in ambito industriale. L'analisi della letteratura sui metodi per l'eliminazione e la riduzione del rischio mostra la presenza di numerose tecnologie, ad oggi disponibili, per la sicurezza dei lavoratori rispetto a tali ambiti. Tuttavia, gli infortuni, gli incidenti e le malattie professionali sono ancora presenti, a dimostrazione del fatto che la sicurezza è spesso considerata un costoso investimento e un mero obbligo di conformità alla normativa cogente. In particolare, questo elaborato presenta diverse metodologie di tipo amministrativo e tecnico per l'eliminazione e la riduzione del rischio in ciascun ambito di ricerca indagato. I controlli amministrativi comprendono procedure e modelli matematici per la progettazione dei processi di lavoro in sicurezza. Tali metodi di controllo riducono l'esposizione dei lavoratori ai fattori di rischio. L'analisi ergonomica delle attività di movimentazione manuale guida la modellazione dei problemi di ottimizzazione multi-obiettivo nella progettazione dei controlli amministrativi per la riduzione del rischio ergonomico in diversi settori industriali. I controlli di tipo amministrativo per la riduzione dei rischi in ambienti confinati includono procedure di lavoro, metodologie decisionali multi-criterio e l'analisi dei requisiti dei sistemi basati sulle tecnologie dell'Internet delle cose (IOT) per ridurre il rischio del lavoro negli ambienti confinati. L'introduzione dell'automazione a sostituzione del lavoro manuale e le metodologie tecniche per il controllo del rischio durante il lavoro negli ambienti confinati vengono presentati come strumenti per l'eliminazione del rischio. I risultati mostrano come l'integrazione dei principi dell'ergonomia e della sicurezza nei processi industriali svolga un ruolo di primo piano per il successo dell'attuazione della complessiva strategia aziendale. La tesi termina con la raccomandazione che le aziende dovrebbero integrare i principi di salute e sicurezza sul posto di lavoro per la gestione delle risorse umane con la strategia organizzativa e produttiva aziendale. La gestione dei problemi e dei rischi per la salute e la sicurezza dei propri lavoratori dovrebbe essere considerata come cruciale per lo sviluppo e il miglioramento dell'ambiente di lavoro, nonché un efficace leva per aumentare le prestazioni e la produttività dell'azienda. Infine, questa ricerca sostiene e rafforza l'evoluzione del concetto di sicurezza nel settore industriale, da ex post obbligo di adempimento a una normativa cogente, a ex ante strategia di ottimizzazione.
Burkey, Linde Christine Rush. "Reflex of Avoidance in Spatial Restrictions for Signatures and Handwritten Entries." Digital Commons @ East Tennessee State University, 2012. https://dc.etsu.edu/etd/1421.
Full textQiu, Gege. "Nouveaux complexes métalliques confinés au sein de ligands hémicryptophanes pour la catalyse en milieu confiné et le contrôle de la chiralité autour du centre métallique." Electronic Thesis or Diss., Ecole centrale de Marseille, 2020. http://www.theses.fr/2020ECDM0008.
Full textThe main goal of this thesis was to design, prepare and applied new hemicryptophane cages as supramolecular ligand for metal coordination in confined space. In particular, this work aimed at developping new method for the obtention of (i) enantiopures complexes with controlled helicity and (ii) new confined catalyst with enhanced efficiency and selectivity. The first part consist in a comprehensive literrature review about (i) history of the development of such cage compounds, as well as their applications in recognition and catalysis and (ii) recent examples of control and transfer of chirality within tripodal cages. Then, results about how chirality transfer in a new hemicryptophane can controls the propeller arrangement of the tris(2-pyridylmethyl)amine ligand and its corresponding copper-complex will be discussed. We then studied new TBTA-based hemicryptophane cages as new ligands for copper-catalyzed alkyne-azide cycloaddition (CuAAC) in confined space. Finally, new hemicryptophane cages displaying two metal binding-sites in a single cavity have been developed aiming at reproducing the key structure of methane monooxygenases enzymes
Araújo, Adriana Nunes. "Análise do trabalho em espaços confinados : o caso da manutenção de redes subterrâneas." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2006. http://hdl.handle.net/10183/8925.
Full textThe focus of this dissertation is the work analysis of ten electricians who act in confined space at underground power lines at the Estate Electricity Company in Porto Alegre, RS. It was identified the electricians’ ergonomic demand items. The research was carried out according to the participatory methods of survey and assessment of data, to improvement of safety and work conditions and, therefore, to prevent accidents. The research disclosed that the electricians have the relationship with their superiors, supervisors, and workmates as the most positive aspect of the job. On the other hand, they point out critical problems from different causes: biomechanical, task organization, environmental, and the ones related to the company. Overload regarding physical and mental work demand has been identified, proving that the fear, evident in the professionals’ speech is about the electricity, and not related to confined underground spaces. Besides, the research also displayed five procedures regarded as minimal standards to execute safe work in confined spaces: recognition, testing and monitoring atmosphere, ventilation, training and rescue. Despite the little knowledge electricians have on this criteria, some points of it were reported, some in an indirect way, during the interviews as relevant aspects to the work, being attributed to most of them a low level of satisfaction. Therefore, it comes to the conclusion that the implantation of a Permit-Requires Space Program, besides promoting accidents prevention in these spaces, has a direct relationship with the workers’ satisfaction.
Stein, Gary. "Path planning for N- degrees of freedom in a confined space represented by N- dimensions using approximate cell decomposition for hypercubes to graph node traversal to calculate the optimal path (gNND*)." Honors in the Major Thesis, University of Central Florida, 2003. http://digital.library.ucf.edu/cdm/ref/collection/ETH/id/417.
Full textBachelors
Engineering and Computer Science
Electrical Engineering
Thibault, Pierre. "L'hélium 4 dans les aérogels de silice : effet du confinement sur la transition superfluide." Université Joseph Fourier (Grenoble ; 1971-2015), 1994. http://www.theses.fr/1994GRE10101.
Full textWee, H. K. "Heat and mass transfer in confined spaces." Thesis, University of Canterbury. Chemical and Process Engineering, 1986. http://hdl.handle.net/10092/5879.
Full textNarayanan, Shankar. "Gas assisted thin-film evaporation from confined spaces." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/42780.
Full textBarnett, Steven John. "The dynamics of buoyant releases in confined spaces." Thesis, University of Cambridge, 1992. https://www.repository.cam.ac.uk/handle/1810/251520.
Full textPottinger, Mark Gerard. "Localisation of underwater sensor nodes in confined spaces." Thesis, University of Manchester, 2012. https://www.research.manchester.ac.uk/portal/en/theses/localisation-of-underwater-sensor-nodes-in-confined-spaces(50095cdd-28a2-4a63-b683-80cbff55b6b1).html.
Full textSelman, Jason Stuart. "Work-related Traumatic Fatal Injuries Involving Confined Spaces." Thesis, Curtin University, 2019. http://hdl.handle.net/20.500.11937/79398.
Full textFonquernie, Marc. "Stabilite des ecoulements de convection naturelle en espace confine a fort nombre de rayleigh : une etude experimentale." Toulouse 3, 1987. http://www.theses.fr/1987TOU30185.
Full textLiu, Jason Hon Wei. "Robotic minimally invasive tools for restricted access confined spaces." Thesis, University of Leeds, 2016. http://etheses.whiterose.ac.uk/15489/.
Full textGilbert, Timothy. "Aerodynamic effects of high speed trains in confined spaces." Thesis, University of Birmingham, 2014. http://etheses.bham.ac.uk//id/eprint/4748/.
Full textLI, YANJUN. "Flame Spread in Confined Spaces: Microgravity Experiments and Numerical Simulations." Case Western Reserve University School of Graduate Studies / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=case1623863431539671.
Full textDaver, Henrik. "Quantum Chemical Modeling of Phosphoesterase Mimics and Chemistry in Confined Spaces." Doctoral thesis, Stockholms universitet, Institutionen för organisk kemi, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-148259.
Full textAt the time of the doctoral defense, the following paper was unpublished and had a status as follows: Paper 5: Manuscript.
Mohammadi, Ladan. "Atmospheric fuzzy risk assessment of confined spaces at mine reclamation sites." Thesis, University of British Columbia, 2011. http://hdl.handle.net/2429/36533.
Full textLi, Gang. "The structure and development of jets in flow in confined spaces." Thesis, University of Hertfordshire, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.245455.
Full textRupert, Francois Johannes. "Control of surfaces in confined spaces : Tab-aileron control system development." Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/6605.
Full textENGLISH ABSTRACT: This thesis forms part of the Control Surfaces in Confined Spaces (CoSICS) project conducted at Stellenbosch University. The aim of this project is reduction of control surface actuator footprints on the existing wing structures of commercial airliners such as the Airbus A320 and A330. This is achieved by reducing control surface hinge moments through the application of trailing edge tabs. This results in smaller actuator requirements. The first tier of the project focussed on the geometric optimisation of the tab applied to an aileron. This thesis focusses on the development of dynamic control of the aileron through either tab-only or concurrent tab and aileron actuation. In the effort to develop dynamic control, a fully coupled generalised dynamic model of the tab and aileron is derived and presented. Through linearisation of this model, linear controllers are developed. Two distinctly different controllers are presented; the first controller makes use of classical methods for control of the tab-only actuated aileron and the second controller makes use of modern control techniques such as full state feedback to facilitate controlled concurrent tab and aileron actuation. Each proposed controller is evaluated in terms of dynamic performance, robustness, disturbance rejection and noise immunity. Based on the controller development, a summary of dynamic actuator requirements is given. Practical verification of the model and the controller performance is then undertaken. The development of the necessary hardware and software is also presented. The concept of aileron control through tab-only actuation and concurrent tab and aileron actuation is then validated. Conclusion are then drawn about the accuracy of the theoretical model and the practical performance of the controllers. The thesis is concluded with recommendations for future work to increase the fidelity of the model. Important aspects about the practical implementation of the concept on commercial jetliners are also summarised.
AFRIKAANSE OPSOMMING: Hierdie tesis is deel van die Control Surfaces in Confined Spaces1 projek by Stellenbosch Universiteit. Die doel van hierdie projek behels die verkleining van die aktueerder spasie en ondersteunings struktuur vereistes, op die bestaande vlerk struktuur van kommersiële vliegtuie soos die Airbus A320 en Airbus A330. Dit is bereik deur die vermindering van die beheeroppervlak skarnier se draaimoment met behulp van aerodinamiese hulpvlakke. Kleiner aktueerders word dus benodig. Die eerste stadium van die projek fokus op die geometriese optimisering van die hulpvlak op ’n aileron. Hierdie tesis fokus op die ontwikkeling van dinamiese beheer van die aileron deur middel van hulpvlak aktueering alleenlik of met die gelyktydige aktueering van die hulpvlak en aileron. In die proses van onwikkeling is ’n volgekoppelde veralgemeende dinamiese model van die hulpvlak en aileron afgelei en voorgelê. Deur middel van linearisasie van die model is linieêre beheerders ontwikkel. Tans is twee verskillende beheerders ontwikkel. Die eerste beheerder is gebaseer op die klassieke metodes en maak staat op die aktueering van die hulpvlak alleenlik. Die tweede beheerder maak gebruik van moderne beheer tegnieke soos vol toestand terugvoer om gelyktydige hulpvlak en aileron aktueering te realiseer. Die beheerders is elk geëvalueer in terme van dinamiese gedrag, robuustheid, versteurings verwerping en ruis verwerping. Die beheerstelsel ontwikkeling lei tot ’n opsomming van die dinamiese aktueerder vereistes. Dit word gevolg deur praktiese verifikasie van die model en die beheerstelsel gedrag. ’n Opsomming van die ontwikkeling van nodige hardeware en sagteware word voorgelê. In hierdie proses is die konsep van beide hulpvlak alleenlike aktueering en gelyktydige hulpvlak en aileron aktueering bewys. Gevolgtrekkings word gemaak oor die akkuraatheid van die model en die praktiese gedrag van die beheerders. Die tesis word afgerond met voorstelle vir toekomstige werk wat die model se betroubaarheid kan verbeter. Verder word belangrike punte oor die praktiese aspekte van konsep implementering op kommersiële vliegtuie ook uitgelig.
Cesbron, Ludovic. "On the derivation of non-local diffusion equations in confined spaces." Thesis, University of Cambridge, 2017. https://www.repository.cam.ac.uk/handle/1810/270355.
Full textKarimipanah, Taghi. "Turbulent jets in confined spaces : application in mixing ventilation: experimental and numerical studies." Doctoral thesis, Högskolan i Gävle, Avdelningen för bygg- energi- och miljöteknik, 1996. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-17832.
Full textBorchardt, Lars, Winfried Nickel, Mirian Casco, Irena Senkovska, Volodymyr Bon, Dirk Wallacher, Nico Grimm, Simon Krause, and Joaquín Silvestre-Albero. "Illuminating solid gas storage in confined spaces – methane hydrate formation in porous model carbons." Royal Society of Chemistry, 2016. https://tud.qucosa.de/id/qucosa%3A30232.
Full textBorchardt, Lars, Winfried Nickel, Mirian Casco, Irena Senkovska, Volodymyr Bon, Dirk Wallacher, Nico Grimm, Simon Krause, and Joaquín Silvestre-Albero. "Illuminating solid gas storage in confined spaces – methane hydrate formation in porous model carbons." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-221847.
Full textWang, Jinpeng. "Impact of mobility and deployment in confined spaces on low power and lossy network." Thesis, Université Clermont Auvergne (2017-2020), 2019. http://www.theses.fr/2019CLFAC024/document.
Full textWireless Sensor Networks (WSNs) technology is one of the building blocks ofthe Internet of Things (IoT). Due to their features of easy deployment and flexibility,they are used in many application domains. Low-Power and Lossy Networks(LLNs) are a special type of WSNs in which nodes are largely resources constrained.For LLNs, convergecast is one of the basic traffic modes, where all traffic in the networkis destined to a predefined destination called the sink. While considering theIoT application domains, convergecast is not the only traffic mode in the network.The sink needs to send commands to certain sensors to perform actions. In this application,anycast is another basic traffic mode. In anycast, the traffic from the sinkis destined to any member of a group of potential receivers in the network.Traditionally LLNs are formed by static sensor nodes and rarely change positions.Due to the strict resource constraints in computation, energy and memory ofLLNs, most routing protocols only support static network. However, mobility hasbecome an important requirement for many emerging applications. In these applications,certain nodes are free to move and organize themselves into a connectednetwork. The topology would continuously change due to the movement of nodesand radio links instability. This is a hard task for most routing protocols of LLNs toadapt rapidly to the movement and to reconstruct topology in a timely manner.The goal of this thesis is to propose an efficient mobility support for routingprotocols in LLNs. We focus on convergecast and anycast, which are the most usedtraffic modes in LLNs, in mobile network scenarios.We propose an enhancement mechanism, named RL (RSSI and Level), to supportrouting protocols in convergecast LLNs in mobility. This mechanism helps routingprotocol make faster decisions for detecting mobility and updating next-hop neighborsbut suffers from high overhead. We propose a dynamic control message managementto enhance the overhead performance of RL and implement it on top ofRouting Protocol for Low-power and Lossy network (RPL) and we named it RRD(RSSI, Rank and Dynamic). After taking into account hysteresis of the coveragezone of the transmission range of nodes, we optimized RRD. This enhanced versionis called RRD+. Based on RRD+, we proposed MRRD+ (Multiple, RSSI, Rankand Dynamic) to support multiple sinks in convergecast LLNs in mobility. ADUP(Adaptive Downward/Upward Protocol) is a routing solution that supports bothconvergecast and anycast in LLNs concurrently.We evaluated the performance of our contributions in both simulation usingCooja simulator and experiment (only for ADUP) on TelosB motes. The resultsobtained in both simulation and experiment confirm the efficiency of our routingprotocols
Qawasmi, Yaseen [Verfasser], and Thomas [Akademischer Betreuer] Sottmann. "Toward confined spaces in polymers and microemulsions for catalytic applications / Yaseen Qawasmi ; Betreuer: Thomas Sottmann." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2019. http://d-nb.info/1218532599/34.
Full textRouquette, Rémi. "Self-assembly of platinum(II) complexes with tunable photophysical properties in confined spaces and in solution." Thesis, Strasbourg, 2017. http://www.theses.fr/2017STRAF075/document.
Full textThis thesis focuses on the design, synthesis and the photophysical characterisation of luminescent neutral platinum(II) compounds containing a tridentate chromophoric ligand and a monodentate ancillary moiety with different functionalities. Such complexes exhibited drastic changes to their photoluminescence properties upon self-assembly, triggered by the establishment of weak noncovalent p-p stacking and metallophilic interactions. It was demonstrated that these platinum(II) complexes can be covalently attached to silicon and gold substrates but also encapsulated into polymer particles. The self-assembly properties of amphiphilic platinum(II) complexes have also been intensively studied. Understanding the behaviour of one complex in a solvent mixture allowed further investigation into the supramolecular co-assembly of two different platinum(II) complexes. This approach leads to the formation of solvatochromic fibers with specific and reversible phototophysical properties. The investigated compounds and their assemblies were useful for the development of novel functional materials for sensing or stimuli-responsiveness applications
Jaquet, Christopher Denis. "Control surfaces in confined spaces : the optimisation of trailing edge tabs to reduce control surface hinge moments." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/4327.
Full textENGLISH ABSTRACT: This thesis describes the first project relating to the Control Surfaces in Confined Spaces (CoSICS) project at Stellenbosch University. The aim of CoSICS project is to reduce the size of control surface actuators, and this thesis considers the aileron system of commercial aircraft such as the Airbus A320 and A330. Specifically the project aims to reduce the aileron hinge moment, as this will result in smaller actuators. Possible methods are discussed where aerodynamic forces are used to reduce the aileron hinge moment through the use of a wing-aileron-tab configuration. In order to examine the use of the configuration, first order aerodynamic modelling is performed using two-dimensional thin-aerofoil theory, which is also extended to a basic three-dimensional approximation. To determine the maximum reduction in hinge moment several optimisations are performed where only the tab chord length is varied, both tab and aileron chord lengths are varied, and finally the tab chord length and aileron span are varied. The optimisation methods used, namely the gradient-based sequential quadratic programming (SQP) and a real-encoded genetic algorithm (REGA) are discussed in detail and include general implementations which are then applied to the problem. The optimisations performed are dual-layered where optimal deflection angles are determined as well as the optimal geometry. The results of the optimisation are tested using a roll manoeuvre in a specially developed Simulink simulation environment for this purpose. The study produces results where new hinge moment values are an order of magnitude smaller than those of the old configuration, while maintaining suitable lift and rolling moment coefficients. The optimisation and simulation infrastructure developed in this thesis provides a platform for higher-fidelity models and components being developed in future work to provide higher fidelity results.
AFRIKAANSE OPSOMMING: Hierdie tesis beskryf die eerste projek in die Control Surfaces in Confined Spaces-projek1 (CoSICS-projek) uitgevoer by die Universiteit Stellenbosch. Die doel van die COSICs-projek is om die grootte van beheervlak aktueerders te minimeer en hierdie tesis handel oor die aileron stelsel van kommersiële vliegtuie soos die Airbus A320 en A330. Die doel van hierdie tesisis om die skarnier draaimoment van die aileron te minimeer deur aërodinamiese kragte in te span in ’n vlerk-aileron-hulpvlak konfigurasie. Eerste-orde aërodinamiese modelle is afgelei met behulp van twee-dimensionele dunvlerkteorie en is gebruik om die konfigurasie te analiseer. ’n Eerste orde drie-dimensionele benadering is ook ontwikkel. Om die maksimum vermindering in die skarnier draaimoment te bepaal, is verskeie optimerings uitgevoer waar eers die hulpvlak se koordlengte gevarieer word, daarna beide die aileron en hulp-vlak se koordlengtes en laastens die hulp-vlak se koordlengte en wydte. Die twee optimerings metodes wat gebruik is, nl. ’n sekwensiële kwadratiese programmerings (SKP) tegniek, en ’n reële getal-geënkodeerde genetiese algoritme (RGGA), word bespreek en ontwikkel voor hulle toegepas word op die probleem. Twee-vlak optimerings word uitgevoer waar beide die optimale defleksiehoeke en die optimale geometrie bepaal word. Die resultate van die optimering word daarna getoets deur middel van ’n rol maneuver wat uitgevoer word in ’n Simulink simulasie omgewing wat daarvoor geskep is. Hierdie studie lei tot goeie resultate met skarnier draaimoment waardes ’n ordegrootte kleiner as dié van die vorige stelsel, terwyl goeie waardes van rol-moment en verheffingskrag koëffisiënte behou word. Die optimering en simulasie infrastruktuur wat hier ontwikkel word verskaf ’n platform vir meer akkurate modelle en komponente wat ontwikkel word in toekomstige projekte om meer akkurate resultate te lewer.
Amaral, Lasaro José. "Espaço, memória e identidade na obra Vila dos Confins." Universidade Federal de Goiás, 2016. http://repositorio.bc.ufg.br/tede/handle/tede/6514.
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Fundação de Amparo à Pesquisa do Estado de Goiás - FAPEG
The space category received more attention in the literary studies in the late decades. It is observed that this category has much importance in the literary text as any other element. thus far prioritized as, for example, the time. The dissertation is based mainly on the Topoanalisys theory by Borges Filho and, through his methodology; a study was done regarding the spatiality in the work Vila dos Confins (1974) by Mario Palmério. To do so, we used Bachelard (2008) theoretical work and Brandão (2013). We could verify that some parts of Brazil depicted in the book were still barely known: rivers, forests and dirt roads are always described in the narrative route. The house also presents itself as an essential element in the text and contributes to the understanding in order to establish positive-affective and negativeaffective relationships with the characters, which Borges Filho (2007) calls topopatia. Corroborating the analysis of this literary corpus, this dissertation examines also the dialogue established between space, memory and identity in the light of the theories of Candau (2014), Silva (2008), among others. These issues are analyzed in the context of the book, therefore, in a way, state and picture a society rooted in a particular location. In this sense, our study aims to better understand the work of a regionalist nature written by a politician-writer analyzing the spaces. It is important to note that the relationship of the characters with the space they inhabit or go through has a great influence in the plot in order to lead and contribute to the end of the novel. The narrator presents intriguing facts that permeate the text in order to transform the space of the newly emancipated county into a political battleground, as the electoral dispute is present throughout the whole narrative.
A categoria espaço recebeu atenção maior nos estudos literários das últimas décadas. Nota-se que tal categoria tem tanta importância na obra literária quanto qualquer outro elemento até então priorizado como, por exemplo, o tempo. A dissertação se fundamenta principalmente pela teoria da Topoanálise de Borges Filho e, através de sua metodologia, foi feito um estudo da espacialidade na obra Vila dos Confins (1974) de Mário Palmério. Para tanto, foi utilizado também o aporte teórico de Bachelard (2008), Brandão (2013). Pudemos constatar que espaços de um Brasil ainda quase não desbravado são comuns na obra: rios, matas, estradas de terra batida são sempre descritas no percurso da narrativa. A casa também se apresenta como um elemento essencial no texto e contribui com o entendimento do mesmo ao imprimir relações afetivo-positivas e afetivo-negativas com as personagens, o que Borges Filho (2007) chama de topopatia. Corroborando com a análise desse corpus literário, esta dissertação examina, ainda, o diálogo estabelecido entre espaço, memória e identidade, à luz das teorias de Candau (2014), Silva (2008), dentre outros. Esses temas são analisados no contexto da obra, pois, de certa forma, afirmam e enraízam a sociedade em um determinado local. Nesse sentido, o nosso estudo tem por finalidade entender melhor uma obra de cunho regionalista escrita por um escritor-político através da análise dos espaços que esta apresenta. É importante salientar que, as relações das personagens com o espaço que o habitam ou percorrem têm uma influência muito grande dentro da trama de forma a implicar e contribuir com o desfecho do romance. O narrador apresenta fatos intrigantes que permeiam o texto de forma a transformar o espaço do recém-emancipado município em um campo de batalhas político, uma vez que a disputa eleitoral está presente durante toda a narrativa.
Ehlers, Righardt Frederick. "Feedback control of a shape memory alloy actuator for control surface deflection." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/19977.
Full textENGLISH ABSTRACT: The successful design, implementation and testing of a feedback control system for tab-deflection control of a shape memory alloy (SMA) based control surface actuator is presented. The research is performed as part of the Control Surfaces in Confined Spaces (CoSICS) research project conducted at Stellenbosch University. The research group investigates ways to provide control surface actuation in size-restricted spaces in commercial aircraft such as the Airbus A320 and A330. This is achieved by investigating the concept of trailing edge tabs to reduce the required torque load, resulting in reduced actuator requirements enabling the use of smaller actuators. This thesis contributes to the project by investigating the possibility of using SMA-based actuators in reduced hinge moment requirement applications. An SMA-based tab actuator demonstrator design is presented. Mathematical models are derived for the SMA material, thermodynamics and actuator geometry. The models are combined to formulate an SMA-based control surface actuator model. The model is utilised in four tracking feedback controller designs; two based on linear and two based on non-linear control techniques. The manufactured prototype is presented along with the incorporated hardware for controller implementation. System identification follows and validates the three mathematical models. Practical verification of the model and two of the controllers is conducted. The unimplemented controllers are implemented through a validated model simulation. Controller evaluation, based on the dynamic controller performance, is conducted. The results validate the concept of using an SMA actuator for tab-deflection control and indicate important limitations for the intended application.
AFRIKAANSE OPSOMMING: Die tesis behels die ontwerp, implementering en toetsing van ’n terugvoer beheerstelsel vir hulpvlak defleksie beheer van ’n vorm-geheue allooi (SMA) gebaseerde aktueerder. Die navorsing vorm deel van die Beheervlakke in Begrensde Ruimtes (CoSICS) navorsingsprojek by Stellenbosch Universiteit. Die CoSICS navorsing behels ’n ondersoek na beheervlak aktueering in beknopte spasies in kommersiële vliegtuie soos die Airbus A320 en A330. Die probleem word aangespreek deur ’n ondersoek na aerodinamiese hulpvlakke wat ’n vermindering in skarnier moment tot gevolg het en sodoende die aktueerder vereistes verminder. Hierdie tesis dra by tot die projek deur die moontlikheid van die gebruik van SMAgebaseerde aktueerders in verminderde skarnier moment vereiste toepassings te ondersoek. ‘n SMA gebaseerde hulpvlak demonstrasie aktueerder ontwerp word voorgelê. Wiskundige modelle vir die SMA materiaal, termodinamika en prototipe geometrie is geformuleer en gekombineer om ‘n SMA gebaseerde beheervlak aktueerder model te ontwikkel. Die model word in vier beheerder ontwerpe toegepas. Twee ontwerpe is op liniëre en twee op nie-liniëre beheer tegnieke gebaseer. Die prototipe en nodige hardeware vir beheerder implementasie is voorgedra. Stelsel identifikasie is toegepas en verifieer die drie wiskundige modelle. Praktiese verifikasie van die model en twee beheerders is gedoen. Die ongeïmplementeerde beheerders is deur die geverifieerde aktueerder model gesimuleer. ‘n Beheerder evaluasie gebaseer op die dinamiese beheerder gedrag word toegepas. Die evaluasie beklemtoon kritiese aspekte en beperkinge in verband met SMA aktueering. Die resultate regverdig die gebruik van ‘n SMA aktueerder vir hulpvlak defleksie beheer en beklemtoon belangrike beperkinge ten opsigte van die voorgestelde toepassing.
Silva, Ricardo Cesar Fernandes da. "Oficiais da Marinha Mercante: um estudo sobre os fatores contribuintes para a evasão nos anos iniciais da carreira embarcada." reponame:Repositório Institucional do FGV, 2013. http://hdl.handle.net/10438/11280.
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The Brazilian maritime shipping industry is currently under going a fast growing expansion driven by, amongst other reason, Government policies towards encouraging new building ships to the Oil & Gas industry in local shipyards . At the same time , the exploration and production of petroleum demand s chartering a large number of foreign f lag vessels to support its operations. The fast growing fleet counters the fact of the shortage of skilled workforce manning those vessels , notably the Merchant Maritime Officers . Worsening the critical situation the National Council of Immigration issued the Normative Resolution n° 72/2006, with mandatory minimum proportion of Brazilian seafarers after 90 days of cont inuous operation in the Brazilian jurisdiction waters . Moreover , a study ordered by the National Union of Shipowners shows that the turnover of Maritime Officers , in the first years of their career aboard, is about 30 percent. For this reason, this study , from a literature review about Brazilian culture, motivation , work - f amily conflict , confined spaces working and turnover , has develope d into an exploratory and field research , through personal interviews analyzed accordingly with the method of content analysis with seasoned professional s with regard the thematic approach , and Maritime Officers , in order to identify the factors contributing to the turnover of Maritime Officers in the early years of his career aboard. As a result , the study showed that the intrinsic and extrinsic motivators’ agents act continuously directing the behavior of Marit ime Officers to stay or quit the career aboard . In the process of alter ing beha vioral and psychological forces , associated with motivation, the decision making process is influenc ed by a high number of alternatives represented by available employment oppor tunities to the Maritime Officers , the work - family conflicts and the difficulty to adapt working in a confined environment. In the case of Maritime Officers , females’ genre , the situation is even more sensitive because they struggl e to accomplish with the motherhood and wifely role . Therefore , the motivation to stay or quit the c areer aboard is strongly related of seeking fulfillment of personal expectations and the desire to balance personal and professional life
A indústria de transporte marítimo brasileira passa por um momento de forte expansão decorrente, entre outros fatores, de políticas governamentais que incentivam a construção, nos estaleiros nacionais, de navios para serem utilizados em apoio às atividades da indústria de óleo e gás. Ao mesmo tempo, para complementar a frota brasileira, as empresas petroleiras demandam a contratação de grande quantidade de navios estrangeiros para apoiar as suas operações. Este quadro de crescimento da frota, observado, particularmente, nos últimos 10 anos, contrasta com a escassez de mão de obra qualificada para tripular as embarcações, de modo especial dos Oficiais da Marinha Mercante (OMM). Acentuando o contraste, o Conselho Nacional de Imigração editou a Resolução Normativa n° 72/2006, determinando às empresas de navegação, que operam barcos de bandeira estrangeira, a contratação de proporções mínimas de tripulantes brasileiros, após 90 dias contínuos de operação no país. Além disso, estudos encomendados pelo Sindicato dos Armadores, SYNDARMA, apontam que a taxa de evasão dos OMM, nos anos iniciais da carreira embarcada, é de cerca de trinta por cento. Assim, o presente estudo, a partir de uma revisão bibliográfica acerca da história da Marinha Mercante brasileira, da cultura brasileira, da motivação, dos conflitos família-trabalho, do trabalho em espaço confinado e da rotatividade, se desenvolveu em uma pesquisa exploratória e de campo, por meio de entrevistas pessoais, analisadas à luz da técnica da análise de conteúdo, com profissionais de reconhecida experiência com o tema, além de OMM, com o objetivo de identificar os fatores contribuintes para a evasão dos OMM nos anos iniciais da carreira embarcada. Como resultado, o estudo mostrou que os agentes motivadores intrínsecos e extrínsecos agem continuamente direcionando o comportamento dos OMM para a permanência ou saída da carreira embarcada. Nessa alternância de forças psicológicas e comportamentais, associadas à motivação, influenciam no processo decisório as alternativas existentes representadas pelas oportunidades de emprego oferecidas aos OMM, os conflitos trabalho-família e a dificuldade de adaptação ao trabalho em ambiente confinado. No caso dos OMM, do gênero feminino, a situação é ainda mais sensível, pois enfrentam dificuldades para conciliar a vida embarcada com o papel de mãe e esposa. Portanto, a motivação para a permanência ou saída da carreira embarcada está fortemente relacionada à busca pela realização das expectativas pessoais e ao desejo de equilibrar vida pessoal com a profissional.
Denaro, Chiara. "Limiti e confini del diritto di asilo nel Mediterraneo. Etnografia di alcuni percorsi di fuga dalla Siria." Doctoral thesis, Universitat Autònoma de Barcelona, 2017. http://hdl.handle.net/10803/457720.
Full textIn the frame of the Syrian citizens’ flight to the MENA region and to Europe between 2013 and 2016, this research reflects on the very content of the right to asylum in three border zones of Southern Europe (Lesvos, Sicily and Melilla) in order to shed light on its variable contours. Starting by an analysis of the reconfiguration of the Mediterranean space in the post-2011, both as migration regime and political space, the research path focuses to the right to asylum issue by putting the question of access at the core: access to the territory of a (supposed to be) safe country, access to the asylum procedure, and access to first reception. Moreover it examines the agency and voice of Syrian refugees during their journeys in order to promote a better understanding of certain inedited social phenomena of which they have been protagonists. The most relevant was the challenge of the prescriptions imposed by the Dublin Regulation, which took shape through various kinds of interactions with (old and new) stakeholders, and in some cases through acts of resistance, aimed at pursuing their journeys to Central the Northern European countries, generally imagined as final destinations. Through a multi-sited ethnography and a comparative approach the research attempted to explore the mechanisms through which refugees’ agency has developed and the main contents of their voice by showing how they have been able to call into question certain social structures, such as those embodied by migration and border regimes. In refugees’ narratives concerning their “ to and throughout Europe, their self-representation as human beings, who are entitled of specific fundamental rights as such, emerges as dominant and foster an interpretation of their paths of agency and resistance as rational answers to the current emptying process of the right to asylum. In other words, their secondary movements appear as attempts to revitalize the right to asylum, by filling it with the better possible content.
FERRONI, FRANCESCA. "Identità corporea e performatività dello spazio peripersonale nella schizotipia e schizofrenia." Doctoral thesis, Università degli studi di Modena e Reggio Emilia, 2021. http://hdl.handle.net/11380/1239491.
Full textAnomalies of self-experiences have been associated with schizophrenia spectrum disorders. It has been proposed that the weak basic sense of self (‘minimal self’), the disturbed implicit bodily functioning and the disruption of intercorporeal attunement with others are manifestations of a disturbed bodily self in schizophrenia (Sz). This altered basic sense of self, strictly related to self-recognition and self-other discrimination impairments, have been linked to deficits in multisensory integration mechanisms. One of the basic experiences of self concerns the sense of body-ownership (BO) which is not only associated with body parts but also with the face, a crucial cue for self-identity allowing to distinguish the self from the others and in differentiating others. Sz is characterized by deficits in one’s own and others’ face recognition, as well as by a disturbed BO. Thus, the aim of the first study here presented was to integrate these lines of research investigating the Enfacement Illusion (EI) proneness in Sz. Results showed how EI induced the expected malleability of Self-Other boundary among both controls and patients; interestingly, it also demonstrated how Other-Other boundary is influenced by EI, suggesting how EI is not only confined to self-sphere but it also affects the way we discriminate others. The second study adds important new evidence in the context of the bodily self in Sz, focusing on the implicit bodily self processing, operationalized in the so-called self advantage effect (SAeff, a faster sensory motor mental rotation with self than others’ body-parts in a laterality judgment task). Results showed the absence of the SAeff in Sz revealing a specific alteration in the sensorimotor processes of self body parts, suggesting a potential distorted motor nature of the minimal self. Another crucial aspect shaping our sense of self is bodily self-awareness, the feeling of being a bodily self in space (spatial self). This experience depends on multisensory integration occurring within the portion of space surrounding our body, Peripersonal Space (PPS). PPS is not fixed, rather it dynamically shapes through motor experiences (e.g. after a tool-use). Moreover, the size of PPS largely varies across people depending on several individual characteristics, including schizotypy (St). However, little is still known about the relationship between PPS plasticity and personality traits. To this aim, we investigated PPS plasticity after two different motor trainings (i.e. after using a tool and after observing someone else using the tool), in participants along the St continuum. Results showed PPS expansion after tool-use, whereas absence of PPS expansion emerged after the observation task. Moreover, we found greater PPS expansion in the relatively-low St group than in the relatively-high one, regardless of the type of motor training performed. These results underline a potential general functional alteration of PPS with the increase of St level. Taking into account the idea of a dynamic continuum ranging from St to full-blown psychosis, it is reasonable to hypothesize a lesser malleability of PPS boundaries in Sz. No studies until now have investigated this functional aspect of PPS in Sz. Hence, this represents the focus of the last study that illustrates the preliminary results on Sz patients, constituting another relevant contribution to our understanding of the spatial self in psychopathology. Taken together, all this evidence enriches the current state of the art of the minimal self disorder in Sz, empirically supporting the idea of a fragile self, which shatters into a variety of small pieces that enclose multiple interrelated bodily aspects.
Martins, Nuno António Saraiva. "Nível de oxigénio em espaços confinados: risco real ou risco percecionado." Master's thesis, Instituto Politécnico de Setúbal. Escola Superior de Ciências Empresariais, 2018. http://hdl.handle.net/10400.26/25627.
Full textÉ vulgar ouvir-se dizer que os espaços confinados são locais potencialmente perigosos. A confirmar-se, é importante compreender o porquê da afirmação. Em análise, estará ao longo da dissertação o que se considera seguro em relação ao nível percentual de oxigénio e a comparação entre o risco percecionado e o risco real, enquadrado na temática dos espaços confinados. Com a dissertação pretendo demonstrar que os espaços confinados, só por si, só serão perigosos quando se subestimarem questões tão simples como por exemplo a avaliação e interpretação do nível de oxigénio atmosférico que deve exisitir dentro de um espaço confinado, de forma a que o mesmo seja considerado seguro. A identificação dos perigos e a avaliação dos riscos fazem parte do vocabulário geral de qualquer empresa e em particular do dia-a-dia do técnico de segurança, no entanto o que se consegue retirar da identificação dos perigos e da avaliação dos riscos dependerá em muito da perceção, do conhecimento e da experiência de quem irá realizar o trabalho de identificar e avaliar os perigos que irá encontrar, para posteriormente associar os riscos que possam estar inerentes a um determinado perigo. Fico esperançado que esta análise permita a redução de falsas garantias de segurança, as quais possam comprometer a salvaguarda das partes envolvidas, sejam gestores, chefes de equipa, trabalhadores, familiares ou amigos. Os acidentes laborais são um flagelo da atividade laboral e afetam todos os que direta ou indiretamente se relacionam com eles. Verifica-se que em muitos dos acidentes, as causas são simples e que a antecipação de uma consequência devastadora resultado de um acidente grave ou mortal, estava ao alcance de todos. Para isso não ser apenas e só um desejo das pessoas ligadas à segurança laboral, é necessário parar, pensar e acima de tudo não se assumir a presunção de princípios que, em alguns casos, estão assentes em ideologias e práticas desatualizadas.
It is usual to say and hear that confined spaces are potentially dangerous places. If confirmed, it is essential to understand the reason for that statement. It is therefore fundamental to analyse what is considered safe in relation to the percentage of oxygen, and to understand the difference between the perceived risk and the real risk. The aim of this thesis is to demonstrate that a confined space will be dangerous when underestimating such simple aspects as the assessment and the interpretation of the atmospheric oxygen level, which must exist within a confined space to be considered as safe. Hazard identification and risk assessment are part of the general vocabulary of any company, and in particular of the day-to-day work of the safety technician. However, what can be learned from hazard identification and risk assessment will depend greatly on the perception, knowledge and experience of the one who will identify and assess the hazards that are encountered, and that would be inherent to a particular hazard. It is hoped that this analysis will not allow false assurances to be given to safety, which may endanger all parties, whether they are executors, orderlies, team chiefs, managers, family members or friends. Accidents at work are a scourge of the working activity, and it affects all those that are directly or indirectly related to them. It is known that in many accidents, the causes are simple and it was within the reach of all to anticipate the devastating consequences that result from a serious or fatal accident. For this not to be only a mirage for people connected to work safety, it is necessary to stop, think and above all not to assume the presumption of principles that in some cases are based in old ideologies and practices.
Groud-Cordray, Claude. "In confinio Abrincatensis regionis : l'aristocratie des espaces frontaliers du IXe au milieu du XIIe siècle." Thesis, Normandie, 2019. http://www.theses.fr/2019NORMC040.
Full textAvranchin occupies a border position within the Duchy of Normandy, sharing its western borders with Brittany, Maine and the lordship of Bellême. Territory considered at the same time as interface, periphery and interstice, it is also a living space, result of it own dynamic, organized by the societies that inhabit it. Through its relationship to power and its local ambitions, the aristocratic group, whose formation is the result of a complex and ancient process, constitutes an essential component of border identity.Far from being a desert region, Avranchin presents in the ninth century a political and social organization in which aristocratic families are integrated. This society, whose endogenous or exogenous character is unknown, appears as the obvious product of the Neustrian regnum. It is revealed in particular by the prism of the former administrative districts, the royal action or the role of bishops and hermits. Affected by the profound transformations of the Carolingian kingdom, aristocratic families are affected by the influence of the powerful family groups of Rorgonids and Robertians, whose strategy of domination of space is felt even in Avranchin. The Breton thrust of the middle of the ninth century and the political domination of the counts of Rennes accentuate the composite and multiscalar character of this society.When the dukes of Normandy, then the counts of Mortain, extend their authority over Avranchin during the eleventh century, the aristocratic group presents a certain form of continuity. The establishment of an institutional space is the result of a skilful construction, sometimes the result of a policy of accommodation and compromise, and relies on families outside the territory or formerly located in Avranchin. These shape their power around new logics and new loyalties, induced by the ducal or comtal control, the holding of administrative offices or the guarding of fortresses. They also organize their territories according to their own dynamics, sometimes around a prioral foundation or a fortification. Networks of extended relations and vassalage, family or neighborhood circles show that the horizons of this aristocracy do not stop at the limits of his possessions, nor at those in Avranchin.Although they have never generate vast honors or great seigniorial entities, aristocratic families play an essential role along the borders. Sometimes in support of the ducal authority, but often according to their own interests and beyond the political control of the border, they greatly influence the fluctuations of power in the peripheral areas of Avranchin where their interventions take various forms. The founding of the abbey of Savigny in 1112-1113 sheds light on this complex society, strongly marked by networks of influence and alliance, where the living space and geography of the powers of the aristocratic families shape the border area