Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 29 for “"PMCs"”.
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Structural health monitoring of polymer-matrix composites (PMCs) using embedded piezoelectric transducers: experimental and numerical approaches
This doctoral thesis presents a comprehensive investigation combining experimental study and numerical modeling of smart Polymer-Matrix Composites (PMC) embedding ceramic and polymeric piezoelectric transducers. The primary objective was to enhance their intelligent functionality to establish …
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The role of PMCs (Private Military Companies) in counter-insurgency combat in Afghanistan (2001 to 2010).
"The Role of PMCs (Private Military Companies) in Counter-insurgency Combat in Afghanistan (2001 to 2010)" aims to identify the primary combat roles which PMCs played while in support of U.S. forces during the counterinsurgency campaign in Afghanistan from 2001-2010. It first provides background on …
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Private Military Companies, Peacekeeping, and African States: A Critical Analysis of PMCs in Peacekeeping Operations in Africa
… the hypothesis that Private Military Companies (PMCs) are a viable option for direct involvement in UN peacekeeping missions in African states. The involvement of PMCs in the affairs of states is a controversial and divisive issue, but since the end of the Cold War, they have become increasingly …
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Graphene/Oxide Interactions with Polymer Networks Modeled Using Molecular Dynamics
… as an additive to Polymer Matrix Composites (PMCs) for material property enhancement. Achieving homogeneous dispersion of the graphene platelets within a polymeric network is critical to realizing these enhancements. Research has shown that achieving homogeneous dispersion of graphene …
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Contracted Wars, Compromised Oversight: Private Military Companies in Iraq, Afghanistan, and the Decline of U.S. Accountability Standards
… the expansion of Private Military Contractors (PMCs) through a combination of operational necessity, strategic policy decisions, and systemic oversight failures. Despite their growing role, PMCs operate in legal and oversight grey zones. Despite a growing body of work on PMC accountability, …
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The Use & Consequences of Performance Management & Control Systems : A Study of a Professional Services Firm.
… that Performance Management and Control Systems (PMCSs) impact positively on organizational efficiency and effectiveness by affecting the behaviour of organizational participants. However, PMCSs also create tensions between achieving shortterm and long-term objectives which often times lead to …
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The modern day gold rush ; private military corporations
… corporations. Private Military Corporations (PMCs) offer expertise ranging from construction to logistics but a number of contractors have been accused of human rights violations, particularly in the current theatres of war in Iraq and Afghanistan. The theme of this thesis is that PMCs need to …
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Thermal regulation of vascularized fiber-reinforced polymer matrix composites
… 300 °C. Thermal regulation is required to use PMCs outside of their service temperature. Internal vascular networks provide a platform for thermal regulation, allowing for on-demand, adaptive heat removal and preservation of material properties. This dissertation uses the established …
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The Modernization of Large Power Transformer Tanks
… two types of advanced Polymer Matrix Composites (PMCs): Glass Fiber Reinforced Polymer), and CFRP (Carbon Fiber Reinforced Polymer).</p> <p>Numerical models were built and independently verified to examine the performance of the selected PMCs in ballistic simulations to compare their impact …
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Thermo-Mechanical Behavior of Polymer Composites Exposed to Fire
… critical issues for Polymer Matrix Composites (PMCs) in naval applications is the structural performance of composites at high temperature such as that experienced in a fire. A three-dimensional model including the effect of orthotropic viscoelasticity and decomposition is developed to predict …
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The U.S. Government and the Privatized Military Industry: Obscuring the Line Between Public and Private Sector Roles
… sources, including Private Military Companies (PMCs). These companies are legitimate, registered businesses staffed by former military personnel providing a variety of services. Private Military Companies based in the United States have worked closely with the U.S. government serving as an …
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Degradation of High Voltage Glass Fiber-Reinforced Polymer Matrix Composites by Aggressive Environmental Conditions
… mechanisms can develop in high voltage PMCs under those extreme environments, which, in turn, can affect the long term structural durability of the composites. A set of PMCs reinforced with ECR-glass and E-glass fibers embedded in four different resins has been investigated in this …
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Silane Surface Modification of Boron Carbide in Epoxy Composites
… a few studies have been carried out on epoxy PMCs containing only small amounts of BC. The lack of adhesion exhibited between BC and resin led to limited mechanical strength and durability. Hence, silane surface modification of BC particles was conducted with γ–glycidoxypropyltrimethoxysilane …
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A Systems Level Analysis of the Transcription Factor FoxN2/3 and FGF Signal Transduction in Sea Urchin Larval Skeleton Development and Body Axis Formation
… the early blastula stage; and then is lost from PMCs at the mesenchyme blastula stage. foxN2/3 expression then shifts to the secondary mesenchyme cells (SMCs) and later to the endoderm. Here we show that, Pmar1, Ets1 and Tbr are necessary for activation of foxN2/3 in the descendants of …
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The Business of War: A Content Analysis of Private Military Companies' Websites
… used to connect to website analysis of existing PMCs. The population studied is drawn using members of a private military trade association called the International Peace Operations Association. Using content analysis, a keyword search was conducted of member websites to identify the percentage …
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In situ curing of polymeric composites via resistive heaters comprised of aligned carbon nanotube networks
… application of polymer matrix composites (PMCs) has encouraged the use of nanofibers, especially carbon nanotubes (CNTs), to concurrently enhance the physical properties of such composites while adding multi-functionality. However, current-generation manufacturing routes of PMCs have …
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Mechanical and Thermal Characterization of Continuous Fiber-Reinforced Pyrolysis-Derived Carbon-Matrix Composites
… composites. Polymer matrix composites (PMCs) have a number of attractive properties including light weight, high stiffness-to-weight and strength-to-weight ratios, ease of installation on the field, potential lower system-level cost, high overall durability and less susceptibility to …
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Gene regulatory networks controlling an epithelial-mesenchymal transition
… micromere-derived primary mesenchyme cells (PMCs) undergo an EMT process to ingress into the blastocoel, and these cells later become the larval skeleton. Much has been learned about PMC specification in sea urchin embryos. However, much less is known about how states of the sequentially …
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Development and Construct Validation of the Pharmacists' Care of Migraineurs Scale
… Further study evaluating the utility of the PMCS is warranted.
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Acetylene-filled pressure broadened short photonic microcells
… short acetylene-filled photonic microcells (PMCs’) as optical frequency references in the near infrared region for applications in telecommunication, gas sensing, and metrology. The PMC is a 5-10 cm long hollow-core photonic crystal fiber (HC-PCF) in which the high pressure acetylene gas is …
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