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.
Results
Showing 1 to 20 of 87 for “"ramping"”.
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Learning during ramping : policy choices for semiconductor manufacturing firms
Thesis (M.S.)--Massachusetts Institute of Technology, Sloan School of Management, 1993.
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Physiological Responses in OSA Patients to Ramping Exercise After CPAP Treatment
Continuous positive airway pressure (CPAP) is the primary therapy administered for those afflicted with obstructive sleep apnea (OSA). We examined the effects of CPAP therapy on physiological variables during a ramped exercise. The five male, OSA patients had mean values and standard deviations for …
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Quantification of the economic impacts of ramping capability products in a multi-settlement market structure
… resources is increasing the operational ramping requirements of actual power systems. The increase in renewable energy resources and, more generally, variable energy resources has been identified by ISOs and academics alike as a defining factor for the need of increased ramping resources …
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Structure-property relations of nanostructured carbon systems as a function of processing
… on the effects of different temperature ramping rates (TRR's) during pyrolysis of phenolic resin to form the ceramic matrix. Preliminary X-Ray Diffraction (XRD), Raman spectroscopy and Vickers Hardness results indicate that increasing the temperature ramping rate (in the range of 10°C/min …
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Security market manipulations and the assurance of market integrity
… manipulation as proxied by the incidence of ramping alerts would raise transaction cost for completing larger trades. We find ramping alert incidence positively related to effective spreads in 8 of 10 turnover deciles from most liquid to thinnest-trading securities. The magnitude of the …
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Modeling and Control of Complex Stochastic Networks, With Applications to Manufacturing Systems and Electric Power Transmission Networks
… the variability of power demand, and the ramping-rate constraints on generation.
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Modeling and Control of Overloaded Transmission Networks
… could be available, a short-term generation ramping algorithm is presented. A feedback control for clearing overloads is developed based on repeated short-term ramping solutions and it is demonstrated that this feedback control provides solutions similar to those obtained from the multistage …
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Electricity Markets Price Risk, Pollution, and Policies
… The second essay examines the importance of ramping cost to electricity price volatility. High price volatility has plagued electricity market participants for decades and is increasingly important in the context of growing intermittent renewables. Although electricity market price behavior …
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System design and manufacturability of concrete spheres for undersea pumped hydro energy or hydrocarbon storage
… a steady supply to the grid without excessive ramping-up and ramping-down of onshore, fossil-fueled power generation units and to reduce the cost of wind integration, some form of energy storage is required. The greater water depths in which floating wind turbines are located can provide an …
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Investigating the glassy to rubbery transition of polydextrose and corn flakes using automatic water vapor sorption instruments, DSC, and texture analysis
… using dynamic vapor sorption (DVS). The DVS ramping isotherm was obtained at a linearly increasing relative humidity (RH), 2%RH/hr, from 10 to 85%RH. The DVS equilibrium isotherm was obtained at twelve RH values using a dm/dt criterion of 0.0005%. The traditional saturated salt slurry …
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Maneuver analysis for spinning thrusting spacecraft and spinning tethered spacecraft
… velocity pointing errors, can be reduced by ramping up (and then ramping down) the thruster. The first topic discussed in this thesis derives closed-form solutions for the angular velocity, Euler angles, inertial velocity, and inertial displacement solutions with nonzero initial conditions. …
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Intelligence by design in an entropic power grid
… a dynamic electricity market model in which ramping costs are considered, the impacts of those costs on electricity markets are investigated. The key conclusion is that those additional ramping costs, in average terms, are not reflected in electricity prices. These results reveal several …
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Investigation of Accessory Olfactory Interneuron Physiology and Function After Experience-Dependent Plasticity
… that Arc-expressing IGCs participate in ramping aggression. Using a combination of ArcTRAP mice and chemogenetics (Cre-dependent hM4D(Gi)-mCherry AAV injections), I found that disrupting Arc-expressing IGC activity during repeated resident-intruder interactions abolished the ramping …
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Sterilization resource forecasting in the medical devices industry
… for medical devices increases, production is ramping up, and the need for additional sterilization capacity increases. The time required to build more sterilization capacity can be between six to nine months, and therefore companies are looking into their future production to estimate when …
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Methane storage and transport via structure H clathrate hydrate
… conversion achieved within a day when thermal ramping above the ice melting point was applied. It was found that a polar guest (tert-butyl methyl ether / TBME) wets ice more extensively compared to two hydrophobic guests (neo-hexane / NH and methyl-cyclohexane / MCH). TBME also has much higher …
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Stochastic simulation of power systems with integrated renewable and utility-scale storage resources
… the need for system operators to impose stricter ramping requirements on the conventional generating units so as to maintain the system capability to perform ``load following'', i.e., respond to quick variations in the loads and renewable resource outputs in a manner that maintains the power …
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Reliability of the Acetylene Single-Breath Method For Measuring Cardiac Output
… of the C₂H₂ single-breath technique during ramping exercise testing with the addition of a starling resistor in 11 apparently healthy, sedentary volunteers (7 male and 4 female). Subjects performed three maximal ramping exercise test sessions over a 6-week period and Qc was measured at rest …
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Design and implementation of a continuous improvement framework, focusing on material and information flow, for the manufacturing of organic photovoltaics
… startup and is currently in the process of ramping up their production volumes. The MIT team has worked on numerous improvement activities that helped improve different aspects of the manufacturing plant. This thesis specifically focuses on my work that involved implementing a continuous …
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Applying constraint-based theory to a complex aerospace manufacturing process
A new airplane model is quickly ramping up in production rates, and in order to achieve the organizational targets and commitments, Flow Days, Unit Hours and Cycle Times must be reduced throughout the entire supply chain. The Continuous Improvement Group (CIG) is an initiative supporting these …
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Unit commitment : tight formulation and pricing
… units with representation of their transition ramping. Finally, we propose a pricing method that reduces out-of-market payments in multi-interval real-time markets.
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