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Stochastic Operations Research (SOR)
UT
Faculties
EEMCS
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MOR
SOR
Research
Completed Projects
Stochastic Operations Research (SOR)
UT
Faculties
EEMCS
Disciplines & departments
MOR
SOR
Research
Completed Projects
Short project descriptions
Beyond 3G
Beyond3G focuses on professional users, in particular the police and businessmen, having access to their corporate ICT facilities while travelling. The project creates ubiquitous, secure and seamless access over heterogeneous networks including UMTS and WLAN, and addresses the resulting capacity needs.
BRICKS
The BRICKS project stimulates fundamental research in computer science thus improving the innovation climate in the Netherlands and generating sustainable economic growth, which is highly driven by ICT. At the same time, BRICKS stimulates the interaction and cooperation of research groups with industry, to evade the so-called European paradox. This paradox states that often excellent research is carried out in Europe, but when it comes to the ability to transform the results into applications which create wealth, Europe is lagging behind the USA.
Anomalous decisions emergence system
The goal of this project is the development of mathematical tools for emerging anomaliness in workflows and data flows for systems in which bounded rational decision-making takes place.
CASIMIR
In emergency situations (for example earthquakes, accidents or attacks), it is of vital importance for rescue personnel to obtain an accurate and consistent picture of the situation, and to regain control on the shortest possible notice. This prevents further escalation, minimises the number of casualties and restricts the damage. In such a situation, communication is complicated because existing communication infrastructures (like GSM and UMTS) may not be available. Emergency services therefore use their own portable ‘mobile’ ad-hoc communication equipment. As the emergency workers should be highly mobile, such equipment should be small and light.
Dynafloat
This research project focuses on logistics and mobility, and seeks to reconcile economic, social and ecological objectives. That is: transport and logistics should be maximally efficient, with minimum delay and limited adverse impact on the environment (carbon and particle emission, noise). The project deals with developing brand new analytical models for the dynamic traffic control (at the tactical as well as operational level) through road infrastructures and based on the three sorts of input data, mentioned before.
Dynafloat Dutch
Het NWO project ‘Dynafloat: Dynamic urban traffic flow management using floating-car, planning, and infrastructure data’, onderzoekt hoe je met dynamisch verkeersmanagement vervoersstromen ‘real time’ kunt reguleren. Niet alleen voor een paar doorgaande routes, maar voor het hele wegennet van de stad tegelijkertijd; en voor alle weggebruikers: van vrachtwagens en openbaar vervoer tot personenauto’s.
EasyWireless: Multipath Routing and Mobility
Rapid advancements in portable computing and wireless communication have led to a broad interest in instantly deployable, wireless data networks. These so called "ad-hoc networks" are particularly of interest for rescue services. C2000, which is currently introduced for such services in the Netherlands, is capable of voice communication. The Easy Wireless project investigates interworking and QoS provisioning in wireless ad-hoc networks and aims at research towards appropriate solutions for service continuity and QoS control.
EQUIP
Future communication networks will support a broad variety of services. Among these, some will have strict Quality of Service (QoS) requirements, for example telephony and interactive video. The QoS delivered by the current Internet, based on IP, can be described as best effort: no guarantees are provided. Since this is not adequate to support real time applications, resource management mechanisms are proposed to enable the support of QoS in IP networks. In this project the effectiveness of these QoS enabling mechanisms are evaluated.
INTEX
Concepts and results from mathematics have profoundly impacted networking, ranging from results in graph theory, to queueing theory. Past efforts have been based on an underlying point-to-point channel model. While this model has served wired networks very well, it is not the most appropriate for wireless networks. The wireless medium behaves very differently due to interference, leading to broadcast and superposition effects.
Distributed planning of clinical pathways
The project focuses at the long term level to control the length of clinical pathways. Theoretic queueing models will be developed to analyze the logistical performance. Two viewpoints are dealt with: (1) the clinical pathway viewpoint, and (2) the patient viewpoint.
McStores
In the design of dependable (embedded) computer and communication systems, the use of architecture description languages (ADLs) such as AADL becomes more and more widespread. In order to establish the correct and timely operation of such systems by design, the use of model checking has become more prevalent in recent years.
Deploying Security Measures
The effects of terrorist and piracy activities, or generally speaking activities of intelligent opponents can have a large impact on the socio-economic and military well-fare. To counter these increasing, multiple threats, security measures/forces should be deployed to surveil and patrol assigned areas to protect valuable objects and critical infrastructure (e.g. harbours, airports, merchant ships and routes).
Smart Radio
The scope of the Smart Radio project is the development of mobile radio access standards that offer improved capacity, data rates and reliability. Particularly, the project investigates the application of network coding concepts to the evolution of the LTE standard. Network coding is a family of coding technologies that promise more effective use of network resources
TENETS
This project aims at developing provably efficient techniques for the simulation of rare events in non-Markovian queueing networks, motivated by the need to accurately estimate failure probabilities in practical systems. This project will move into an unexplored area of stochastic discrete-event simulation, and is challenging as it is a novel combination of three aspects: the non-Markovian nature of the systems, the study of networks of queues rather than single queues, and the aim of achieving provably efficient results.
NetRank: Ranking of nodes in complex stochastic networks
Complex networks such as Internet and World Wide Web play an important role in our information society.
Recent years have witnessed an excessive growth of the impact of complex networks, such as Internet and World Wide Web, on our information society. Ranking Web pages (nodes) is of utmost importance for practical accessibility of the huge amount of data available on the Web. One of the influential methods for such ranking is for instance the PageRank recently developed and implemented by Google.
QoS of Personal Networks @ Home
Personal Network (PN) is a new concept (Niemegeers and Heemstra de Groot, 2002) related to the emerging field of pervasive computing that extends the concept of a Personal Area Network (PAN). The latter refers to a space of small coverage (less than 10 m) around a person where ad hoc communication occurs. A PN has a core consisting of a PAN, which is extended on-demand and in an ad hoc fashion with personal resources or resources belonging to others. This project focuses on QoS in PN's in the home environment.
Queues in Traffic
This project studies the effects of vehicle routing on pollution levels. We aim to develop queueing theory based mathematical models to analyse highway traffic flows and focus on the capacity drop and shockwaves. Then we intend to use emission models and plume models to predict air pollution in a wider region. These predictions will be tested using remote sensing data and data from measurement stations.
Finally, we aim for traffic steering methods to (re)-direct road traffic to avoid pollution.
Stochastic network analysis
The penetration of mobile communications systems, and the number of services (e.g. voice, data, Internet) offered by mobile operators, are increasing at impressive speed. Accommodating these heterogeneous services at sufficient quality of service within the severely limited capacity assigned to mobile networks requires pricing rules, call admission control strategies, and capacity re-allocation protocols, that take into account the intricate relation between mobility of subscribers and the characteristics of the telecommunications network.
LOGIDOC
Driven by increased health expenditures, an ageing population, and long waiting lists, the majority of the hospitals is reconsidering the organisation of the internal processes. The challenge is to redesign the internal layout and control in such a way that both the interests of the patient and of the hospital are addressed. LogiDOC aims to develop mathematical models and techniques to analyse and support the design of the optimal logistical layout of a hospital with a given case mix and desired performance levels.
NADINE
On the scale of the past ten years, modern societies have developed enormous communication and social
networks. Their classification and information retrieval becomes a formidable task for the society. Various search
engines have been developed by private companies which are actively used by Internet users. Due to the recent
enormous development of World Wide Web and communication networks, new tools and algorithms should be
invented to characterize the properties of these networks on a more detailed and precise level.
RRR
The recent emergence of sensor networks has opened up tremendous possibilities for improving the “quality of life” in the residential environment. Important application areas of sensor networks are monitoring of energy (electricity, water, gas) consumption and air quality, healthcare and safety. As a consequence, both the number and the diversity of sensors and actuators in the residential environment will grow at an unprecedented rate in the years to come.
ISMIRT
In urban environments, pollution caused by traffic is a big problem which can be decreased by smartly applying traffic lights. In this project, new models are developed which take into account the unpredictable decisions made by road users, for finding the optimal settings for traffic lights in real-time. Furthermore, a 3D visualization was written which generates animations to show how the algorithms work in practice.
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