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 56 for “"maximization problem"”.
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Sum-rate maximization for two-way active channels.
… subchannels are adjusted. We herein study the problem of joint power allocation and channel design over a reciprocal two-way active channel. Assuming the channel is reciprocal, we consider the sum-rate maximization problem under the assumption that the powers of transceivers as well as the …
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Sum-rate maximization in multi-RIS multi-carrier systems through active power allocation and passive beamforming
… propose a novel approach to solving the sum-rate maximization problem in a multi-RIS environment within an orthogonal frequency division multiplexing (OFDM) framework. Reconfigurable intelligent surfaces (RIS) offer low-cost and energy-efficient solutions for enhancing wireless communication. In …
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A continuum limit of a finite discrete nonlinear Schroedinger system
… Levermore, that is, to formulate a variational maximization problem whose solution characterizes the limiting behavior of the inverse spectral solutions of the discrete systems. We convert the maximization problem into a Riemann-Hilbert problem on the unit circle. The "one-gap" ansatz is studied …
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A logarithmic cost-duration analysis
… related to the activity durations. An important problem of cost-duration analysis is how to design the trade-off between indirect and direct costs. Academics and practitioners have been considering linear and nonlinear functions between them. In this paper, we introduce a logarithmic …
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Potential games and competitive scheduling in wireless networks
… and study a related aggregate utility maximization problem, to serve as a benchmark for the performance of the equilibria. We quantify the efficiency loss in the game comparing the optimal solution of the aggregate utility maximization problem, to the best and worst equilibria in terms …
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Iterative algorithms for a joint pricing and inventory control problem with nonlinear demand functions
… In this thesis we consider some of these problems and develop computationally efficient algorithms that aim to tackle and optimally solve these problems in a finite amount of time. In the first half of the thesis we consider the joint pricing and inventory control problem in a …
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MANAGING DYNAMIC SPECTRUM ACCESS UNDER UNCERTAINTY IN COGNITIVE RADIO NETWORKS
… consisting of multiple PUs and SUs to study the problem of maximizing the total expected system throughput. We propose a Bayesian decision-rule-based-algorithm to solve the problem optimally with a constant time complexity. To prioritize PU transmissions, we re-formulate the throughput …
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Dynamic pricing in shared mobility on demand service and its social impacts
In this thesis, we formulate and solve a profit maximization problem of shared mobility on demand service operations, and investigate the impact of such operations on performance of transportation system with a carefully designed case study. It is shown that our approach can generate much more …
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Three Essays on Dynamic Pricing and Resource Allocation
… Chapter 2, we focus on the resource allocation problem of a service firm, particularly a health-care facility. We formulate a general model that is applicable to various resource allocation problems of a hospital. To this end, we consider a system with multiple customer classes that display …
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Modeling Customer Behavior for Revenue Management
… of customer decision making upon the revenue maximization problem of a monopolist firm. First, we study the revenue maximization problem of a monopolist firm selling a homogeneous good to a market of risk-averse, strategic customers. Using a discrete (but arbitrary) valuation distribution, we …
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Sampling Laws for Stochastically Constrained Simulation Optimization on Finite Sets
… optimal allocation as the result of a concave maximization problem for which the optimal solution is the result of solving one of two nonlinear systems of equations. The first result of its kind, the optimal allocation is particularly easy to obtain in contexts where the underlying …
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Exploring Performance Limits of Wireless Networks with Advanced Communication Technologies
… of wireless networks by studying a throughput maximization problem.
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A reinforcement learning algorithm for efficient dynamic trading execution in the presence of signals
This paper focuses the optimal trading execution problem, where a trader seeks to maximize the proceeds from trading a given quantity of shares of a financial asset over a fixed-duration trading period, considering that trading impacts the future trajectory of prices. I propose a reinforcement …
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Faster fully polynomial approximation schemes for Knapsack problems
… that returns ... -optimal solution to a maximization problem of size n, which runs in polynomial time in both ... We develop faster FPTASs for several classes of knapsack problems. In this thesis, we will first survey the relevant literature in FPTASs for knapsack problems. We propose the …
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Accounting for well capacity in the economic decision making of groundwater users
… science. We present a static optimization problem of individual producer rents, given groundwater as a variable input to production. In a break with previous literature, the model allows for the possibility of binding constraints on well capacity, which occur due to the finite lateral speed …
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The impact of customer mix on the cost of capital for electric utilities
… tariffs derived from a constrained welfare-maximization problem. The null hypothesis that investors do not base their perception of the riskiness of a utility on the customer mix is tested against the alternatives that residential customers decrease and that industrial customers increase the …
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Centralized and distributed resource allocation with applications to signal processing in communications
… and deeply analyze multiuser resource allocation problems in different areas, ranging from signal processing, to communications and networking. More specifically, this work focuses on the three main topics that we briefly describe next. First, we study the maximum sum-utility achieved when a …
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Fair resource allocation in multiple access channels
We consider the problem of resource allocation in a multiple access channel. Our objective is to obtain rate and power allocation policies that maximize a general concave utility function of average transmission rates over the information theoretic capacity region of the multiple-access channel. We …
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The Generalized Location Routing Problem with Profits for planetary surface exploration and terrestrial applications
… becomes necessary. This is a challenging profit maximization problem whose decisions encompass selection of bases, technological options, routes, and excursion methods under constraints on a route, a mission, and a whole campaign. The Generalized Location Routing Problem with Profits (GLRPP) is …
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Optimal control problems with switching points
… of this thesis is to give an overview of the problems and difficulties that arise in solving optimal control problems with switching points. A brief discussion of existing optimality conditions is given and a numerical approach for solving the multipoint boundary value problems associated with …
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