In the rapidly advancing field of autonomous vehicles, ensuring the security and reliability of self-driving systems is crucial. Autonomous vehicle systems, such as cooperative adaptive cruise control (CACC), must undergo significant research and testing before their integration into commercial intelligent transportation systems. CACC considers multiple vehicles in close proximity as a single entity, or platoon, with each vehicle equipped with a controller that uses sensor-based measurements and vehicle-to-vehicle (V2V) communication to control inter-vehicle spacing. While this system offers numerous potential benefits for traffic safety and efficiency, it is also susceptible to False Data Injection (FDI) attacks, which can cause the system to behave in potentially life-threatening ways. Testing these scenarios in the real world is infeasible due to expense, safety concerns, and the use of theoretical technologies. This study presents an implementation of a vehicle platoon in a simulated environment where the vehicles' controllers were tuned to maintain desired inter-vehicle spacing. Various FDI signals were then implemented to demonstrate the feasibility of malicious attacks, including a novel parameterized sinusoidal FDI signal. Furthermore, acknowledging the necessity for future anomaly detection schemes and noise filtration, a theoretical optimal attack—generated using a model of the sinusoidal FDI attack and identification of optimal FDI values—was also evaluated.

Approved for public release, distribution is unlimited / There are in excess of 500,000 Manned Portable Air Defense Systems (MANPADS) in worldwide inventories including several thousand outside of government control. MANPADS are surface-to-air missile systems enabling the operator to launch missiles at aircraft from the ground. The most common MANPADS are the Russian SA-7 and U.S. Stinger, which feature infrared guidance systems. The concern that MANPADS can easily be acquired by non-state actors' intent on downing civilian and military aircraft has led international agencies, the U.S., and Russia to implement measures to reduce the risk of a MANPADS attack. International agencies such as the Wassenaar Arrangement work to stop illegal MANPADS proliferation. The U.S. MANPADS Defense Act and the U.S. Department of Homeland Security have implemented measures to counter the MANPADS threat. Russia has revised its export controls and forged a counter-proliferation agreement with most CIS countries. However, the multilateral initiatives to better control MANPADS stocks and transfers are far from comprehensive. A new approach to mitigating the MANPADS threat adopts elements from the 1997 Mine Ban Treaty and the Landmine Monitor. The conclusion of this thesis is that if MANPADS counter-proliferation efforts remain status quo an attack on a commercial aircraft in the western world is imminent.

An anguilliform swimming robot replicating an idealized motion is a complex marine vehicle necessitating both a theoretical and experimental analysis to completely understand its propulsion characteristics. The ideal anguilliform motion within is theorized to produce ``wakeless'' swimming (Vorus, 2011), a reactive swimming technique that produces thrust by accelerations of the added mass in the vicinity of the body. The net circulation for the unsteady motion is theorized to be eliminated. The robot was designed to replicate the desired, theoretical motion by applying control theory methods. Independent joint control was used due to hardware limitations. The fluid velocity vectors in the propulsive wake downstream of the tethered, swimming robot were measured using Particle Image Velocimetry (PIV). Simultaneously, a load cell measured the thrust (or drag) forces of the robot via a hydrodynamic tether. The measured field velocities and thrust forces were compared to the theoretical predictions for each. The desired, ideal motion was not replicated consistently during PIV testing, producing off-design scenarios. The thrust-computing method for the ideal motion was applied to the actual, recorded motion and compared to the load cell results. The theoretical field velocities were computed differently by accounting for shed vortices due to a different shape than ideal. The theoretical thrust shows trends similar to the measured thrust over time. Similarly promising comparisons are found between the theoretical and measured flow-field velocities with respect to qualitative trends and velocity magnitudes. The initial thrust coefficient prediction was deemed insufficient, and a new one was determined from an iterative process. The off-design cases shed flow structures into the downstream wake of the robot. The first is a residual disturbance of the shed boundary layer, which is to be expected for the ideal case, and dissipates within one motion cycle. The second are larger-order vortices that are being shed at two distinct times during a half-cycle. These qualitative and quantitative comparisons were used to confirm the possibility of the original hypothesis of ``wakeless'' swimming. While the ideal motion could not be tested consistently, the results of the off-design cases agree significantly with the adjusted theoretical computations. This shows that the boundary conditions derived from slender-body constraints and the assumptions of ideal flow theory are sufficient enough to predict the propulsion characteristics of an anguilliform robot undergoing this specific motion.

Made available in DSpace on 2016-04-25T18:39:34Z (GMT). No. of bitstreams: 1 Marcos Augusto Assi Pereira.pdf: 1005672 bytes, checksum: fd3197e0f33cc06fff69ea904aa4a017 (MD5) Previous issue date: 2010-10-26 / The activities of Internal Control and Accounting are part of business management, but there is much difficulty in understanding the applicability of the matter, either through ignorance of the benefits or lack of control culture. These activities require a variety of knowledge management, control and corporate governance in addition to ongoing professional development. The control account is derived from the internal control, which determines the policies and procedures of the organization, not counting the accounting and management reports that will be part of the day to day business and explanatory notes. Thus, this study proposes to answer the following question: How companies are implementing internal controls and accounting to support cash management? The accounting errors and fraud are being treated as part of the business or know not? Because of the doubt given, the general aim of this study is to contribute to the process of implementing controls that favor corporate management, developing strategies that facilitate the relationship between theory and practice primarily on the controller. Data collection took two steps. In the first, was held exploratory study by a research literature and documents. In the second, we performed a field survey by questionnaire sent to professionals responsible for implementing corporate controls on small, medium and large companies in the region of Sao Paulo. Qualitative research and descriptive participant seeks to contribute to the disclosure of the methods and methodologies of management controls in the area of treasury and knowledge about the risk of error and fraud in the organization. The result achieved with the questionnaire, together with the definitions and concepts explored in the research literature and documents, shows that companies are implementing controls and some still have difficulty understanding risk management through internal controls and accounting / As atividades de Controles Internos e Contábeis fazem parte da gestão do negócio, mas ainda existe muita dificuldade no entendimento da aplicabilidade da matéria seja por ignorância dos benefícios, seja pela ausência de cultura de controle. Essas atividades exigem multiplicidade de conhecimentos de gestão, controle e governança corporativa, além da permanente atualização profissional. O controle contábil é derivado do controle interno, que determina as políticas e procedimentos da organização, sem contar os relatórios gerenciais e contábeis, que fazem parte das do dia a dia da empresas e da notas explicativas. Sendo assim, este estudo se propõe a responder às seguintes questões: Como as empresas estão implementando os controles internos e contábeis para suporte da gestão de tesouraria? ; Os erros e fraudes contábeis estão sendo tratados como parte do negócio ou ainda é incipiente? Em decorrência da dúvida apresentada, o objetivo geral deste estudo é contribuir para o processo de implementação de controles que favoreçam a gestão corporativa, desenvolvendo estratégias que possibilitem a relação entre teoria e prática principalmente na Controladoria. A coleta de informações teve duas etapas. Na primeira, realizou-se um estudo exploratório por meio de uma pesquisa bibliográfica e documental. Na segunda, elaborou-se uma pesquisa de campo mediante um questionário encaminhado aos profissionais responsáveis pela implementação de controles corporativos em empresas de pequeno, médio e grande porte na região de São Paulo. A pesquisa qualitativa, participante e descritiva contribui para a obtenção de métodos e metodologias de gestão de controles na área de tesouraria e para ampliar o conhecimento dos riscos de erros e fraudes na organização. O resultado alcançado com o questionário, em conjunto com conceitos e definições explorados na pesquisa bibliográfica e documental, demonstra que muitas empresas estão implementando controles e algumas ainda têm dificuldade de entendimento da gestão de riscos dos controles internos e contábeis

Care of the elderly is frequently debated in the Swedish media. Pensioners, who are often ill and lonely, need help with social care, such as cleaning and cooking, and health care, such as taking medicine and treatment of injuries and wounds. They are aided by home helpers from the home helper unit and assistant nurses and nurses from the health centre. How does control operate in this intimate and private situation, and what influences the home helpers? What is the relation between control and the delivery of care to the pensioners? These are the questions explored in this dissertation, based on an empirical study of domestic elderly care in a large city in Sweden. The thesis explores the conflict between the productification of care, manifested in administrative controls, and the needs and desires of the pensioners in specific care giving situations, manifested in self controls. It is seen that even during periods of high financial pressure, the home helpers are influenced by the pensioners. The home helpers are flexible and do extra things not included in the pre-specified social care contract for some pensioners. Flexibility is shown to be important for the pensioners, but the increased financial pressure makes it harder and harder for the home helpers to be flexible. It is therefore suggested in the thesis for social care service purchasers to put in some unspecified time in the social care decisions and not just pre-specified operational activities. In this way some flexibility will be built into the administrative system. The importance of cooperation between the health centre and the home helper unit is also stressed in the thesis. There is a need to issue administrative controls for cooperation. A joint task group, with members from the health centres and the home helper units, meetings between the home helpers and the nurses and specified guidelines for cooperation tasks can act as controls which would sustain significant and positive effects on the cooperation. Finally, a problematic underlying financial process for the home helper units is identified. The home helper units are not often compensated for yearly salary increases. The problems of the moment receive significantly more attention, but this thesis points to the need for discussing the ongoing, underlying and problematic financial process in the elderly care. / <p>Diss. Stockholm : Handelshögskolan, 2007</p>

Submitted by Neusa Fagundes (neusa.fagundes@unioeste.br) on 2018-02-27T13:52:21Z No. of bitstreams: 2 José_BorsattoJunior2017.pdf: 4191897 bytes, checksum: 484e7f22b383a0b184237547fb8f9abc (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2018-02-27T13:52:21Z (GMT). No. of bitstreams: 2 José_BorsattoJunior2017.pdf: 4191897 bytes, checksum: 484e7f22b383a0b184237547fb8f9abc (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2017-10-27 / The exercise of power is fundamental for the attainment of organizational goals, since the efficiency of each individual can be evidenced and controlled by means of standardizations and norms related to the managerial control systems (MCS). This research presents a case study that aimed to understand how the MCS adopted by Mount Olympus are configured as instruments of power, under the bourdiesian perspective of power relations. As contribution and theoretical innovation, an empirical model was elaborated that outlines the package of MCS as an instrument of symbolic power and theoretical propositions about the researched topic were developed. As theoretical bases, both Bourdieu's symbolic power (1989), and the typology of Malmi and Brown (2008) were adopted, in order to address the socio-technical and socio-ideological elements of managerial control systems. The active role of MCS was considered in this study. Qualitative research was carried out through a single case study, according to Stake's (1995) understanding, positioned in the poststructuralist paradigm. For the purpose of the research, the controllership department of a large company (family holding company) was selected as the analysis unit and the MCS adopted by the company as a research object. Data collection took place through qualitative interviews and documentary research. Open, axial and selective encodings (Strauss & Corbin, 2008) were also used as analytical procedures and triangulation of multicriteria data.. In the analysis of MCS, the complementarity between cultural controls, planning, cyber controls, remuneration and rewards and administrative controls was noted. As for the aspects that involve power relations, it was verified that the MCS establish norms for the operation of the field and produce and reproduce hierarchies of power. This structural composition of the field enables the company and organizational members to seek the power resources of their choice. The company, in general, seeks economic, cultural, social, and symbolic capital, and, for that, it appropriates the cultural capital of its employees. The social and symbolic capitals are considered as the main power resources by the organizational members; however, the increase of these resources depends on the development of cultural capital. The MCS generate illusio for the commitment with the work and in the disputes by power, understood like rewards by the subjects of research – financial, non-financial rewards, prestige, and recognition. The influence and control of actions derived from MCS, used to ensure compatibility between organizational strategies and objectives and individual actions, establish the habitus, ie the general dispositions to act socially, which are mentally incorporated by means of from the universal point of view to the field (doxa), and physically through physical attitudes and ways of speaking, thinking, and feeling (hexis). It is concluded that the MCS are defined mainly as a function of the controls culture symbolic instruments of power. In addition, managerial control systems establish power relations that result in the definition of the company's actions towards society and its own employees, in establishing hierarchies of domination and influence and control over organizational members. On the other hand, power also serves as an input for the establishment and application of MCS in the organization. / O exercício do poder é fundamental para o atingimento dos objetivos organizacionais, visto que a eficiência de cada indivíduo pode ser evidenciada e controlada por meio de padronizações e normatizações relativas aos sistemas de controle gerencial (SCG). Esta pesquisa apresenta um estudo de caso que objetivou compreender como os SCG adotados pela Monte Olimpo se configuram como instrumento de poder, sob a perspectiva bourdiesiana das relações de poder. Como contribuição e inovação teórica, elaboraram-se um modelo empírico que esquematiza o pacote de sistemas de controle gerencial como instrumento de poder simbólico e proposições teóricas acerca da temática investigada. No que tange a base teórica, adotaram-se o poder simbólico de Bourdieu (1989) e a tipologia de Malmi e Brown (2008), a fim de se abordar os elementos sociotécnicos e socioideológicos dos SCG. Considerou-se, neste estudo, o papel ativo dos SCG. Realizou-se pesquisa qualitativa por meio de estudo de caso único, conforme o entendimento de Stake (1995), posicionada no paradigma pós-estruturalista. Para a finalidade da pesquisa, selecionou-se o departamento de controladoria de uma empresa de grande porte (holding familiar) como unidade de análise e os SCG adotados por esta como objeto de pesquisa. A coleta de dados ocorreu por meio de entrevistas qualitativas e pesquisa documental. Também se utilizaram as codificações aberta, axial e seletiva (Strauss & Corbin, 2008) como procedimentos analíticos e triangulação de dados multicritério. Notou-se, na análise dos SCG, a complementariedade entre os controles culturais, planejamento, controles cibernéticos, remuneração e recompensas e controles administrativos. Quanto aos aspectos que envolvem relações de poder, constatou-se que os SCG estabelecem normas para funcionamento do campo e produzem e reproduzem hierarquias de poder. Essa composição estrutural do campo propicia à empresa e aos membros organizacionais buscarem os recursos de poder de sua preferência. A empresa, em linhas gerais, busca capital econômico, cultural, social e simbólico, e, para tanto, apropria-se do capital cultural de seus funcionários. Os capitais social e simbólico são considerados como os principais recursos de poder pelos membros organizacionais; entretanto, a elevação desses recursos depende do desenvolvimento de capital cultural. Os SCG geram illusio para o comprometimento com o trabalho e em relação às disputas por poder, compreendidas como recompensas pelos sujeitos de pesquisa – recompensas financeiras, não financeiras, prestígio e reconhecimento. A influência e o controle de ações provenientes dos SCG, empregados para garantir compatibilidade entre as estratégias e objetivos organizacionais e ações individuais, estabelecem o habitus, ou seja, as disposições gerais para se agir socialmente, as quais são incorporadas mentalmente por meio do ponto de vista universal para o campo (doxa) e fisicamente por meio de atitudes físicas e modos de falar, pensar e sentir (hexis). Conclui-se que os SCG são definidos principalmente em função dos controles culturais e são instrumentos simbólicos de poder. Além disso, os SCG estabelecem relações de poder que resultam na definição das atuações da empresa perante a sociedade e seus próprios funcionários, no estabelecimento de hierarquias de dominação e influência e controle sobre os membros organizacionais. Por outro lado, o poder também serve como insumo para o estabelecimento e aplicação dos SCG na organização.

In the San Dimas district, on the western flank of the Sierra Madre Occidental, near the small town of Tayoltita, Durango, gold and silver epithermal ore deposits are mined from the complex Arana fault system. The structural relationships of the Tayoltita system are well-mapped, but their kinematic relationship to ore deposition is unclear. In plan view and in cross-section, the Arana system has a horsetail or wedge-shaped geometry. Subsurface mapping of slickenside striae as movement indicators suggest that the N13°W-striking Arana fault, forming the eastern boundary of the system, is a normal slip fault with at least 250 m of throw. Subsidiary system faults display normal separation with varying degrees of dextral horizontal separation (which is a function of fault orientation). Experimental modeling of the Arana system indicated that the system formed under simple shear as the σ₂ and σ₃ stress axes rotated in a subhorizontal plane about σ₁. Rotational strain caused the developing fault strands to rotate and to be captured by the Arana fault, forming the typical wedge-shaped geometry. Later, a more complex rotation of the three major stress axes enabled hydrothermal fluids to progressively mineralize faults, which had more northerly strikes, by a process similar to progressive strain. This is documented by mineral assemblages that record the instants of fault opening and by the lack of mineralization along the high-angle, northwest- striking faults.

Smart structure control systems commonly use piezoceramic sensors or accelerometers as vibration measurement devices. These measurement devices often produce noisy and/or low-precision signals, which makes it difficult to measure small-amplitude vibrations. Laser interferometry devices pose as an alternative high-precision position measurement method, capable of nanometer-scale resolution. The aim of this research is to utilize a model-based design approach to develop and implement a real-time Linear Quadratic Gaussian (LQG) regulator for a piezoelectric actuated smart structure using a high-precision laser interferometry measurement system to suppress the excitation of vibratory modes. The analytical model of the smart structure is derived using the extended Hamilton Principle and Euler-Bernoulli beam theory, and the equations of motion for the system are constructed using the assumed-modes method. The analytical model is organized in state-space form, in which the effects of a low-pass filter and sampling of the digital control system are also accounted for. The analytical model is subsequently validated against a finite-element model in Abaqus, a lumped parameter model in Simscape Multibody, and experimental modal analysis using the physical system. A discrete-time proportional-derivative (PD) controller is designed in a heuristic fashion to serve as a baseline performance criterion for the LQG regulator. The Kalman Filter observer and Linear Quadratic Regulator (LQR) components of the LQG regulator are also derived from the state-space model. It is found that the behavior of the analytical model closely matches that of the physical system, and the performance of the LQG regulator exceeds that of the PD controller. The LQG regulator demonstrated quality estimation of the state variables of the system and further constitutes an exceptional closed-loop control system for active vibration control and disturbance rejection of the smart structure.

No description available.

<ul> <li>Energy Optimization Stategies</li> <li>Hydraulic Models for Water Distribution Systems</li> <li>Heuristic Multi-objective Optimization Algorithms</li> <li>Multi-objective Optimization Problems</li> <li>System Constraints</li> <li>Encoding Techniques</li> <li>Optimal Pumping Operations</li> <li>Sovling Real-World Optimization Problems </li> </ul> / <p>The water supply industry is a very important element of a modern economy; it represents a key element of urban infrastructure and is an integral part of our modern civilization. Billions of dollars per annum are spent internationally in pumping operations in rural water distribution systems to treat and reliably transport water from source to consumers.</p> <p>In this dissertation, a new multi-objective optimization approach referred to as energy optimization strategy is proposed for minimizing electrical energy consumption for pumping, the cost, pumps maintenance cost, and the cost of maximum power peak, while optimizing water quality and operational reliability in rural water distribution systems. Minimizing the energy cost problem considers the electrical energy consumed for regular operation and the cost of maximum power peak. Optimizing operational reliability is based on the ability of the network to provide service in case of abnormal events (e.g., network failure or fire) by considering and managing reservoir levels. Minimizing pumping costs also involves consideration of network and pump maintenance cost that is imputed by the number of pump switches. Water quality optimization is achieved through the consideration of chlorine residual during water transportation.</p> <p>An Adaptive Parallel Clustering-based Multi-objective Particle Swarm Optimization (APC-MOPSO) algorithm that combines the existing and new concept of Pareto-front, operating-mode specification, selecting-best-efficiency-point technique, searching-for-gaps method, and modified K-Means clustering has been proposed. APC-MOPSO is employed to optimize the above-mentioned set of multiple objectives in operating rural water distribution systems.</p> <p>Saskatoon West is, a rural water distribution system, owned and operated by Sask-Water (i.e., is a statutory Crown Corporation providing water, wastewater and related services to municipal, industrial, government, and domestic customers in the province of Saskatchewan). It is used to provide water to the city of Saskatoon and surrounding communities. The system has six main components: (1) the pumping stations, namely Queen Elizabeth and Aurora; (2) The raw water pipeline from QE to Agrium area; (3) the treatment plant located within the Village of Vanscoy; (4) the raw water pipeline serving four major consumers, including PCS Cogen, PCS Cory, Corman Park, and Agrium; (5) the treated water pipeline serving a domestic community of Village of Vanscoy; and (6) the large Agrium community storage reservoir.</p> <p>In this dissertation, the Saskatoon West WDS is chosen to implement the proposed energy optimization strategy. Given the data supplied by Sask-Warer, the scope of this application has resulted in savings of approximately 7 to 14% in energy costs without adversely affecting the infrastructure of the system as well as maintaining the same level of service provided to the Sask-Water’s clients.</p> <p>The implementation of the energy optimization strategy on the Saskatoon West WDS over 168 hour (i.e., one-week optimization period of time) resulted in savings of approximately 10% in electrical energy cost and 4% in the cost of maximum power peak. Moreover, the results showed that the pumping reliability is improved by 3.5% (i.e., improving its efficiency, head pressure, and flow rate). A case study is used to demonstrate the effectiveness of the multi-objective formulations and the solution methodologies, including the formulation of the system-operational optimization problem as five objective functions. Beside the reduction in the energy costs, water quality, network reliability, and pumping characterization are all concurrently enhanced as shown in the collected results. The benefits of using the proposed energy optimization strategy as replacement for many existing optimization methods are also demonstrated.</p> / Doctor of Science (PhD)