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Добірка наукової літератури з теми "MILP relaxation"

Автор: Grafiati

Опубліковано: 3 червня 2025

Оновлено: 31 липня 2025

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Статті в журналах з теми "MILP relaxation"

Fischetti, Matteo, Leo Liberti, Domenico Salvagnin, and Toby Walsh. "Orbital shrinking: Theory and applications." Discrete Applied Mathematics 222 (January 27, 2017): 109–23. https://doi.org/10.1016/j.dam.2017.01.015.

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Анотація:

We present a method, based on formulation symmetry, for generating Mixed-Integer Linear Programming (MILP) relaxations with fewer variables than the original symmetric MILP. Our technique also extends to convex MINLP, and some nonconvex MINLP with a special structure. We showcase the effectiveness of our relaxation when embedded in a decomposition method applied to two important applications (multi-activity shift scheduling and multiple knapsack problem), showing that it can improve CPU times by several orders of magnitude compared to pure MIP or CP approaches

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Hussin, S. M., M. Y. Hassan, L. Wu, M. P. Abdullah, N. Rosmin, and M. A. Ahmad. "Mixed Integer Linear Programming for Maintenance Scheduling in Power System Planning." Indonesian Journal of Electrical Engineering and Computer Science 11, no. 2 (2018): 607. http://dx.doi.org/10.11591/ijeecs.v11.i2.pp607-613.

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This paper discussed the merit of mixed-integer linear programming (MILP)-based approach against Lagrangian relaxation (LR)-based approach in solving generation and transmission maintenance scheduling problem. MILP provides a straightforward solution by formulating coupling constraints equations so that these sub-problems can be solved simultaneously without involving multipliers. In LR-based approach, generation and transmission maintenance scheduling, and security-constrained unit commitment have been solved individually and the integration was realized through a series of multipliers which

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S.M., Hussin, Hassan M.Y., Wu L., Abdullah M.P., Rosmin N., and Ahmad M.A. "Mixed Integer Linear Programming for Maintenance Scheduling in Power System Planning." Indonesian Journal of Electrical Engineering and Computer Science 11, no. 2 (2018): 607–13. https://doi.org/10.11591/ijeecs.v11.i2.pp607-613.

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This paper discussed the merit of mixed-integer linear programming (MILP)- based approach against Lagrangian relaxation (LR)-based approach in solving generation and transmission maintenance scheduling problem. MILP provides a straightforward solution by formulating coupling constraints equations so that these sub-problems can be solved simultaneously without involving multipliers. In LR-based approach, generation and transmission maintenance scheduling, and security-constrained unit commitment have been solved individually and the integration was realized through a series of multipliers which

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Abdelmaguid, Tamer. "An Efficient Mixed Integer Linear Programming Model for the Minimum Spanning Tree Problem." Mathematics 6, no. 10 (2018): 183. http://dx.doi.org/10.3390/math6100183.

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Finding a minimum spanning tree in a given network is a famous combinatorial optimization problem that appears in different engineering applications. Even though this problem is solvable in polynomial time, having efficient mathematical programming models is important as they can provide insights for formulating larger models that integrate other decisions in more complex applications. In the literature, there are ten different integer and mixed integer linear programming (MILP) models for this problem. They are variants of set packing, cuts, network flow and node level formulations. In additi

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Servare Junior, Marcos Wagner Jesus, Helder Roberto de Oliveira Rocha, José Leandro Félix Salles, and Sylvain Perron. "A Linear Relaxation-Based Heuristic for Iron Ore Stockyard Energy Planning." Energies 13, no. 19 (2020): 5232. http://dx.doi.org/10.3390/en13195232.

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Planning the use of electrical energy in a bulk stockyard is a strategic issue due to its impact on efficiency and responsiveness of these systems. Empirical planning becomes more complex when the energy cost changes over time. The mathematical models currently studied in the literature consider many actors involved, such as equipment, sources, blends, and flows. Each paper presents different combinations of actors, creating their own transportation flows, thus increasing the complexity of this problem. In this work, we propose a new mixed integer linear programming (MILP) model for stockyard

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Alexis, Kyriacou, Demetriou Panayiotis, Panayiotou Christos, and Kyriakides Elias. "Controlled Islanding Solution for Large-Scale Power Systems." IEEE Transactions on Power Systems 33, no. 2 (2017): 1591–602. https://doi.org/10.5281/zenodo.1012320.

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Intentional Controlled Islanding (ICI) has been proposed as a corrective measure of last resort to split the power system into several sustainable islands and prevent cascading outages. This paper proposes a novel ICI algorithm based on a Linear Programming (LP) formulation that directly determines an islanding solution with minimal power-flow disruption for any given number of islands, while ensuring that each island contains only coherent generators. In addition, the proposed algorithm enables operators to constrain any transmission line to be exc

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Wittmann-Hohlbein, Martina, and Efstratios N. Pistikopoulos. "Approximate solution of mp-MILP problems using piecewise affine relaxation of bilinear terms." Computers & Chemical Engineering 61 (February 2014): 136–55. http://dx.doi.org/10.1016/j.compchemeng.2013.10.009.

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Gao, Zhen, Danning Li, Danni Wang, and Zengcai Yu. "Raw Material Purchasing Optimization Using Column Generation." Applied Sciences 14, no. 11 (2024): 4375. http://dx.doi.org/10.3390/app14114375.

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Анотація:

The raw material purchasing (RMP) problem is to determine the purchasing quantities of raw materials in given periods or cycles. Raw material purchasing optimization is crucial for large-scale steel plants because it is closely related to the supply of raw materials and cost savings. The raw material purchasing of large-scale steel enterprises is characterized by many varieties, large quantities, and high costs. The RMP objective is to minimize the total purchasing cost, consisting of the price of raw materials, purchasing set-up costs, and inventory costs, and meet product demand. We present

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Roberti, Roberto, and Mario Ruthmair. "Exact Methods for the Traveling Salesman Problem with Drone." Transportation Science 55, no. 2 (2021): 315–35. http://dx.doi.org/10.1287/trsc.2020.1017.

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Efficiently handling last-mile deliveries becomes more and more important nowadays. Using drones to support classical vehicles allows improving delivery schedules as long as efficient solution methods to plan last-mile deliveries with drones are available. We study exact solution approaches for some variants of the traveling salesman problem with drone (TSP-D) in which a truck and a drone are teamed up to serve a set of customers. This combination of truck and drone can exploit the benefits of both vehicle types: the truck has a large capacity but usually low travel speed in urban areas; the d

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Oustry, Antoine. "AC Optimal Power Flow: a Conic Programming relaxation and an iterative MILP scheme for Global Optimization." Open Journal of Mathematical Optimization 3 (November 2, 2022): 1–19. http://dx.doi.org/10.5802/ojmo.17.

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Дисертації з теми "MILP relaxation"

Kenner, Courtney C. Velde Beth P. "Comparison of two relaxation techniques to reduce physiological indices of anxiety in a person with mild mental retardation." [Greenville, N.C.] : East Carolina University, 2009. http://hdl.handle.net/10342/2232.

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Thesis (M.S.)--East Carolina University, 2009. Presented to the faculty of the Department of Occupational Therapy. Advisor: Beth Velde. Title from PDF t.p. (viewed June 22, 2010). Includes bibliographical references.

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Colliver, Amber A. "THE EFFECT OF MUSIC LISTENING ON RELAXATION LEVEL AND VOLUME OF BREAST MILK PUMPED BY MOTHERS OF INFANTS IN THE NEONATAL INTENSIVE CARE UNIT." UKnowledge, 2015. http://uknowledge.uky.edu/music_etds/39.

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Breast milk is considered the gold standard for infant nutrition, but many factors can hinder milk production. Mothers of infants in the Neonatal Intensive Care Unit (NICU) are especially prone to stress, which can inhibit volume of breast milk. The purpose of this study was to determine if music listening had an effect on the volume of breast milk pumped and relaxation level of mothers of infants in a NICU. A total of 28 participants, who were mothers of infants in the NICU, were included in the data analysis of this study, with 14 in the control group and 14 in the experimental group. Partic

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Brown, Alison. "The application of relaxation for mothers expressing breast milk for their infant in the neonatal unit : a feasibility study and clinical research portfolio." Thesis, University of Glasgow, 2017. http://theses.gla.ac.uk/8398/.

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Objective: Is it feasible to recruit mothers with infants in a neonatal unit (NNU) to engage in 14 days of data collection and use of relaxation? Background: In a NNU mothers may express breast milk for their infant. The NNU has specific stressors, which may impact on emotional wellbeing and ability to provide expressed milk. Relaxation significantly increased the quantity of expressed milk for American mothers. This has not been replicated in the UK, where rates of breastfeeding are low, therefore a feasibility study is needed. Method: A random allocation (treatment as usual vs relaxation), r

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Ait, Ouahmed Mohammed Amine. "Optimisation dans l'auto-partage à un seul sens avec voitures électriques et relocalisations." Thesis, Avignon, 2018. http://www.theses.fr/2018AVIG0228/document.

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Cette thèse a pour objectif de modéliser et résoudre des problèmes d’optimisation d’un système d’auto-partage avec des voitures électriques dit « à un seul sens », où les utilisateurs peuvent prendre une voiture dans une station et la laisser ensuite dans une autre. Ce fonctionnement conduit généralement à une situation de déséquilibre dans la répartition des voitures avec certaines stations pleines et d’autres vides. Une des solutions utilisées par les opérateurs d’autopartage pour pallier ce problème est le recours à des agents pour déplacer les voitures selon le besoin. Identifier et répond

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Lamsali, Hendrik. "Selection of return channels and recovery options for used products." Thesis, Loughborough University, 2013. https://dspace.lboro.ac.uk/2134/13528.

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Due to legal, economic and socio-environmental factors, reverse logistics practices and extended producer responsibility have developed into a necessity in many countries. The end results and expectations may differ, but the motivation remains the same. Two significant components in a reverse logistics system -product recovery options and return channels - are the focus of this thesis. The two main issues examined are allocation of the returned products to recovery options, and selection of the collection methods for product returns. The initial segment of this thesis involves the formulation

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Vigerske, Stefan. "Decomposition in multistage stochastic programming and a constraint integer programming approach to mixed-integer nonlinear programming." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät II, 2013. http://dx.doi.org/10.18452/16704.

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Diese Arbeit leistet Beiträge zu zwei Gebieten der mathematischen Programmierung: stochastische Optimierung und gemischt-ganzzahlige nichtlineare Optimierung (MINLP). Im ersten Teil erweitern wir quantitative Stetigkeitsresultate für zweistufige stochastische gemischt-ganzzahlige lineare Programme auf Situationen in denen Unsicherheit gleichzeitig in den Kosten und der rechten Seite auftritt, geben eine ausführliche Übersicht zu Dekompositionsverfahren für zwei- und mehrstufige stochastische lineare und gemischt-ganzzahlig lineare Programme, und diskutieren Erweiterungen und Kombinationen d

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(7047464), Taotao He. "New relaxations for composite functions." Thesis, 2019.

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Mixed-integer nonlinear programs are typically solved using branch-and-bound algorithms. A key determinant of the success of such methods is their ability to construct tight and tractable relaxations. The predominant relaxation strategy used by most state-of-the-art solvers is the factorable programming technique. This technique recursively traverses the expression tree for each nonlinear function and relaxes each operator over a bounding box that covers the ranges for all the operands. While it is versatile, and allows finer control over the number of introduced variables, the factorable prog

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Liu, Yin-Yu, and 劉引玉. "To Explore the Relaxation Techniques Intervention for Depression and Sleep Quality in Major Family Caregivers of Dementia Patients With Mild or Moderate Stage." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/73199809831073357930.

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碩士 臺北醫學大學 護理學研究所 98 Background: There have been increasing numbers of patients with dementia in Taiwan. The promotion of Aging in place, caring in community has become more important. However, dementia caregivers are facing many distresses, which greatly affect sleep quality and the urgent need to improve. Objective: The purpose of this study was discussed with relationship between sleep quality of major family caregivers for patients with mild or moderate dementia, and to evaluate the effect of the relaxation techniques intervention (RTI) by biofeedback monitor on depression and s

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Книги з теми "MILP relaxation"

Smiseth, Otto A., Maurizio Galderisi, and Jae K. Oh. Left ventricle: diastolic function. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780198726012.003.0021.

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Evaluation of diastolic function by echocardiography is useful to diagnose heart failure with preserved ejection fraction by showing signs of diastolic dysfunction, and regardless of ejection fraction, echocardiography can be used to estimate left ventricular (LV) filling pressure. Diastolic dysfunction occurs in a number of cardiac diseases other than heart failure and mild diastolic dysfunction is part of the normal ageing process. The fundamental disturbances in diastolic dysfunction are slowing of myocardial relaxation, loss of restoring forces, and reduced LV chamber compliance. As a comp

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homaisa, Salitd. Anime Milf Coloring Book: Anime Milf Coloring Books for Adult and Kid Creativity and Relaxation. Independently Published, 2022.

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Collins, Lachlan. Anime Milf Coloring Book: Anime Milf Coloring Books for Adult and Kid Creativity and Relaxation. Independently Published, 2020.

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Byrne, Gerard. Anxiety disorders in older people. Oxford University Press, 2013. http://dx.doi.org/10.1093/med/9780199644957.003.0045.

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Anxiety symptoms and anxiety disorders are highly prevalent among older people, including among those with physical frailty and cognitive impairment. Clinicians are advised to consider the effects of prescribed medication and other substances, and the influence of general medical conditions, in the older person presenting with anxiety. Psychological treatments are recommended for older people with anxiety disorders of mild to moderate severity. These include relaxation training, exposure-based interventions, and cognitive behaviour therapy. Pharmacological interventions are in widespread use,

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8 Mile Dots Lines Swirls Coloring Book: Adults Color Puzzle Activity Books Relaxation. Independently Published, 2020.

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Dixon, Dougie. Anime Milf Stoner Coloring Book: Anime Milf Stoner Confidence and Relaxation Adult Trippy Psychedelic Coloring Books for Women and Men. Independently Published, 2021.

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Anime MILF Coloring Book: High Quality Illustrations, Hentai, Kawaii... Manga Coloring Book for Relaxation. Independently Published, 2022.

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Lampadius, Casper. Coloring Book: Great Excellent Milf the Ultimate Books for Adults, Tweens Creativity and Relaxation. Independently Published, 2022.

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nabilaa, Yoderd. Anime Milf Coloring Book: High Quality Illustrations, Hentai, Kawaii... Manga Coloring Book for Relaxation. Independently Published, 2022.

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Marvel Super Girls Anime Milf Coloring Book: Enchanting Marvel Superhero Girls Anime Milf Coloring Books for Adults, Teenagers Relaxation and Stress Relief. Independently Published, 2020.

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Частини книг з теми "MILP relaxation"

Geißler, Björn, Alexander Martin, Antonio Morsi, and Lars Schewe. "Chapter 6: The MILP-relaxation approach." In Evaluating Gas Network Capacities. Society for Industrial and Applied Mathematics, 2015. http://dx.doi.org/10.1137/1.9781611973693.ch6.

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Jansen, Klaus. "An EPTAS for Scheduling Jobs on Uniform Processors: Using an MILP Relaxation with a Constant Number of Integral Variables." In Automata, Languages and Programming. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-02927-1_47.

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Surkov, B. A., G. V. Murunova, and I. P. Smirnov. "Proton-NMR-Relaxation Study of Water and Fat in Milk Products." In MILK the vital force. Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-3733-8_145.

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Feijs, Loe, Jeanine Kierkels, Nicolle H. van Schijndel, and Marjolein van Lieshout. "Design for Relaxation during Milk Expression Using Biofeedback." In Design, User Experience, and Usability. User Experience in Novel Technological Environments. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-39238-2_54.

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Peyral, P., C. Lebeau, J. Rosenblatt, and A. Raboutou. "The Resistive Transition of Inhomogeneous Superconductors : Effects of “Mild” Granularity, Dimensionality, Gaussian Fluctuations and Critical Behaviour." In Relaxation in Complex Systems and Related Topics. Springer US, 1990. http://dx.doi.org/10.1007/978-1-4899-2136-9_20.

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Costa, M. Fernanda P., Ana Maria A. C. Rocha, and Edite M. G. P. Fernandes. "Continuous Relaxation of MINLP Problems by Penalty Functions: A Practical Comparison." In Computational Science and Its Applications – ICCSA 2017. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-62398-6_8.

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Heckel-Reusser, S. "Whole-Body Hyperthermia (WBH): Historical Aspects, Current Use, and Future Perspectives." In Water-filtered Infrared A (wIRA) Irradiation. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-92880-3_11.

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AbstractWhole-body hyperthermia (WBH), induced by passive heating, and active fever therapy induced by pyrogenic drugs, have been accepted as therapy of various diseases for many decades. However, the introduction of antibiotics and anti-inflammatory drugs caused the interest in this traditional therapy to decline. The development of modern WBH using infrared irradiation (IR) started in the 1960s.Three levels of hyperthermia differ fundamentally in practical implementation, mechanisms of action, and indications. Mild WBH is stress-free and aims mainly to muscle relaxation and increased perfusi

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Haque, E., and B. R. Bhandari. "Effects of Protein Conformational Modifications, Enthalpy Relaxation, and Interaction with Water on the Solubility of Milk Protein Concentrate Powder." In Food Engineering Series. Springer New York, 2015. http://dx.doi.org/10.1007/978-1-4939-2578-0_38.

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Abdi, Ahmad, Gérard Cornuéjols, Siyue Liu, and Olha Silina. "Strongly Connected Orientations and Integer Lattices." In Lecture Notes in Computer Science. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-93112-3_1.

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Abstract Let $$D\,=\,(V,A)$$ D = ( V , A ) be a digraph whose underlying graph is 2-edge-connected, and let P be the polytope whose vertices are the incidence vectors of arc sets whose reversal makes D strongly connected. We study the lattice theoretic properties of the integer points contained in a proper face F of P not contained in $$\{x:x_a=i\}$$ { x : x a = i } for any $$a\in A,i\in \{0,1\}$$ a ∈ A , i ∈ { 0 , 1 } . We prove under a mild necessary condition that $$F\cap \{0,1\}^A$$ F ∩ { 0 , 1 } A contains an integral basis B, i.e., B is linearly independent, and any integral vector in th

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Anand, Vishal. "Survivable Mapping of Virtual Networks onto a Shared Substrate Network." In Principles, Methodologies, and Service-Oriented Approaches for Cloud Computing. IGI Global, 2013. http://dx.doi.org/10.4018/978-1-4666-2854-0.ch014.

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The virtualization of both servers and substrate networks will enable the future Internet architecture to support a variety of Cloud computing services and architectures, and prevent its ossification. Since multiple virtual networks (VN) or virtual infrastructure (VI) and services now share the resources of the same underlying network in a network virtualization environment, it is important that efficient techniques are developed for the mapping of the VNs onto the substrate network. Furthermore, due to the sharing of resources, the survivable design of VNs is also very important, since now ev

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Тези доповідей конференцій з теми "MILP relaxation"

Shoemaker, Lewis E., Gaylord D. Smith, Brian A. Baker, and Jon M. Poole. "Fabricating Nickel Alloys to Avoid Stress Relaxation Cracking." In CORROSION 2007. NACE International, 2007. https://doi.org/10.5006/c2007-07421.

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Abstract Nickel-chromium alloys for service at elevated temperatures are generally solution annealed prior to service to coarsen their grain size to enhance their high temperature strength and resistance to creep and rupture. Alloys for high temperature are often supplied from the producing mill as solution annealed. However, this large grain condition is not optimum for fabrication as it can compromise weldability and the large grain material is subject to stress relaxation cracking when annealed after heavy cold forming. Ideally these alloys are supplied after a lower temperature heat treatm

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Mannan, Sarwan, and Steve McCoy. "High Temperature Properties of As-Produced and Isothermally Exposed 800 Series Alloys and Weldments." In CORROSION 2000. NACE International, 2000. https://doi.org/10.5006/c2000-00516.

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Abstract The Fe-Ni-Cr 800 series alloys, which are commonly used materials of construction in the petrochemical industry, were examined following high-temperature isothermal exposure. Mill annealed alloys were cold worked prior to welding to simulate fabrication conditions. Weldments were tested in the as produced and stress-relieved conditions to evaluate the effect of stress–relief. The levels of alloying additions within the specified chemical composition and variation in grain size were found to greatly influence the properties. Data is presented on the tensile, stress rupture, and microst

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Wang, Yifan, Marvin Volkmer, D�rthe Franzisca Hagedorn, Christiane Reinert, and Niklas von der Assen. "RiNSES4: Rigorous Nonlinear Synthesis of Energy Systems for Seasonal Energy Supply and Storage." In Foundations of Computer-Aided Process Design. PSE Press, 2024. http://dx.doi.org/10.69997/sct.105466.

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The synthesis of energy systems necessitates simultaneous optimization of both design and operation across all components within the energy system. In real-world applications, this synthesis poses a mixed-integer nonlinear programming (MINLP) problem, considering nonlinear behaviours such as investment cost curves and part-load performance. The complexity increases further when seasonal energy storage is involved, as it requires temporal coupling of the full time series. Although numerous solution approaches exist to solve the synthesis problems simplified by linearization, methods for solving

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Kirschbaum, Stefan, Marion Powilleit, Merlind Schotte, and Furkan Özbeg. "Efficient Solving of Time-Coupled Energy System MILP Models Using a Problem Specific LP Relaxation." In 36th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2023). ECOS 2023, 2023. http://dx.doi.org/10.52202/069564-0249.

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Deza, Arnaud, and Elias B. Khalil. "Machine Learning for Cutting Planes in Integer Programming: A Survey." In Thirty-Second International Joint Conference on Artificial Intelligence {IJCAI-23}. International Joint Conferences on Artificial Intelligence Organization, 2023. http://dx.doi.org/10.24963/ijcai.2023/739.

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We survey recent work on machine learning (ML) techniques for selecting cutting planes (or cuts) in mixed-integer linear programming (MILP). Despite the availability of various classes of cuts, the task of choosing a set of cuts to add to the linear programming (LP) relaxation at a given node of the branch-and-bound (B&B) tree has defied both formal and heuristic solutions to date. ML offers a promising approach for improving the cut selection process by using data to identify promising cuts that accelerate the solution of MILP instances. This paper presents an overview of the topic, highl

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Wu, Jiaxin, and Pingfeng Wang. "Risk-Averse Optimization for Resilience Enhancement Under Uncertainty." In ASME 2020 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/detc2020-22226.

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Abstract With the growth of complexity and extent, large scale interconnected network systems, e.g., transportation networks or infrastructure networks, become more vulnerable towards external disturbances. Hence, managing potential disruptive events during design, operating, and recovery phase of an engineered system therefore improving the system’s resilience is an important yet challenging task. In order to ensure system resilience after the occurrence of failure events, this study proposes a mixed integer linear programming (MILP) based restoration framework using heterogenous dispatchable

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LIMBAUGH, C., R. HIERS, III, and W. PHILLIPS. "High-resolution spectral diagnostics in flows with mild vibrational relaxation." In 24th Thermophysics Conference. American Institute of Aeronautics and Astronautics, 1989. http://dx.doi.org/10.2514/6.1989-1676.

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Fang Zhou. "Research the bound of the option value of MIP by Lagrangian relaxation." In 2011 2nd International Conference on Artificial Intelligence, Management Science and Electronic Commerce (AIMSEC). IEEE, 2011. http://dx.doi.org/10.1109/aimsec.2011.6009912.

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Li, Juncheng, Trivikram Dokka, and Guglielmo Lulli. "MIP Formulations of Piece-wise Polyhedral Relaxations of AC Power Flow Equations." In 2023 IEEE Power & Energy Society General Meeting (PESGM). IEEE, 2023. http://dx.doi.org/10.1109/pesgm52003.2023.10253329.

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Giacomin, A. J., and R. S. Jeyaseelan. "Do Molten Polyolefins Reptate in Large Amplitude Oscillatory Shear?" In ASME 1996 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/imece1996-0239.

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Abstract The linear relaxation spectrum predicted by reptation theory cannot accurately describe melt behavior in mild deformations. Replacing the linear spectrum with a generalized Maxwell model, one can assess how well reptation theory predicts large departures from linear viscoelasticity. In this way, three systems are studied in large amplitude oscillatory shear: a nearly monodisperse unbranched melt, a polydisperse unbranched melt, and a polydisperse branched system. Surprisingly, only the nonlinearities exhibited by the polydisperse branched system are reasonably predicted by reptation t

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Звіти організацій з теми "MILP relaxation"

Verbrugge, Randal J., and Saeed Zaman. The Hard Road to a Soft Landing: Evidence from a (Modestly) Nonlinear Structural Model. Federal Reserve Bank of Cleveland, 2023. http://dx.doi.org/10.26509/frbc-wp-202303.

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What drove inflation so high in 2022? Can it drop rapidly without a recession? The Phillips curve is central to the answers; its proper (nonlinear) specification reveals that the relationship is strong and frequency dependent, and inflation is very persistent. We embed this empirically successful Phillips curve – incorporating a supply-shocks variable – into a structural model. Identification is achieved using an underutilized data-dependent method. Despite imposing anchored inflation expectations and a rapid relaxation of supply-chain problems, we find that absent a recession, inflation will

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