An Overview of EDL Technology Investments in the NASA Fundamental Aeronautics Program (2008)
This presentation was part of the session : Strategic Perspectives
Objective Functions for Balance in Trac (2007)
Trac Engineering, Per Kreuger, Juan Alonso, Juan Alonso, Henrik Abrahamsson, Henrik Abrahamsson, ...
Abstract. We prove a result concerning objective functions that can be used to obtain ecient and balanced solutions to the multi-commodity network ow problem. This type of solution is of interest...
Demonstration of Nonlinear Frequency Domain Methods (2006)
Matthew Mcmullen, Antony Jameson, Juan Alonso
This paper demonstrates the accuracy of the nonlinear frequency domain method in applications to unsteady flow calculations. The basis of the method is a pseudospectral approach to recast a nonlinear...
Active Flutter Control using an Adjoint Method (2006)
Pradipta Sahu, Juan Alonso, Antony Jameson
Flutter is one of the most frequently encountered problems in aeroelasticity. Flutter control is therefore of great importance. It has been shown that flutter can be adequately modeled using a simple...
Experimental Evaluation of Lifetime Bounds for Wireless Sensor Networks (2005)
Ritter, Hartmut, Schiller, Jochen, Voigt, Thiemo, Dunkels, Adam, Alonso, Juan
In this paper we present a method for experimental lifetime measurements of sensor networks. Despite the importance of experimental validation, none of the lifetime models proposed so far has been...
Experimental Evaluation of Lifetime Bounds for Wireless Sensor Networks (2005)
Ritter, Hartmut, Schiller, Jochen, Voigt, Thiemo, Dunkels, Adam, Alonso, Juan
Speech given at conference.
Alonso, Juan, Barbier, L., Álvarez, Julio, Romo, Laura, Martín, Jesús C.
Cervical cystic lymphangioma (CCL) is a rare and benign tumour involving congenital and cystic abnormalities derived from lymphatic vessels. The most accepted treatment continues to be surgical...
Experimental Evaluation of Lifetime Bounds for Wireless Sensor Networks (2005)
Ritter, Hartmut, Schiller, Jochen, Voigt, Thiemo, Dunkels, Adam, Alonso, Juan
In this paper we present a method for experimental lifetime measurements of sensor networks. Despite the importance of experimental validation, none of the lifetime models proposed so far has been...
Bounds on the Lifetime of Wireless Sensor Networks (2004)
Alonso, Juan, Dunkels, Adam, Voigt, Thiemo
Energy is one of the most important resources in wireless sensor networks. We use an idealized mathematical model to study the energy consumption under all possible routings. Our results are very...
Bounds on the Lifetime of Wireless Sensor Networks (2004)
Alonso, Juan, Dunkels, Adam, Voigt, Thiemo
Energy is one of the most important resources in wireless sensor networks. We use an idealized mathematical model to study the energy consumption under all possible routings. Our results are very...
Distributed TCP Caching for Wireless Sensor Networks (2004)
Dunkels, Adam, Alonso, Juan, Voigt, Thiemo, Ritter, Hartmut
Previous research on transport layer protocols for wireless sensor networks (WSNs) has focused on designing protocols specifically targeted for sensor networks. Most sensor networks applications,...
Distributed TCP Caching for Wireless Sensor Networks (2004)
Dunkels, Adam, Alonso, Juan, Voigt, Thiemo, Ritter, Hartmut
Previous research on transport layer protocols for wireless sensor networks (WSNs) has focused on designing protocols specifically targeted for sensor networks. Most sensor networks applications,...
The Design of a Lightweight Portable Operating System for Tiny Networked Sensor Devices (2004)
Dunkels, Adam, Grönvall, Björn, Voigt, Thiemo, Alonso, Juan
Wireless sensor networks are composed of large numbers of tiny networked devices that communicate untethered. In this paper we present the design of Contiki, a lightweight and portable operating...
The Design of a Lightweight Portable Operating System for Tiny Networked Sensor Devices (2004)
Dunkels, Adam, Grönvall, Björn, Voigt, Thiemo, Alonso, Juan
Wireless sensor networks are composed of large numbers of tiny networked devices that communicate untethered. In this paper we present the design of Contiki, a lightweight and portable operating...
Making TCP/IP Viable for Wireless Sensor Networks (2004)
Dunkels, Adam, Voigt, Thiemo, Alonso, Juan
The TCP/IP protocol suite, which has proven itself highly successful in wired networks, is often claimed to be unsuited for wireless micro-sensor networks. In this work, we question this conventional...
Making TCP/IP Viable for Wireless Sensor Networks (2004)
Dunkels, Adam, Voigt, Thiemo, Alonso, Juan
The TCP/IP protocol suite, which has proven itself highly successful in wired networks, is often claimed to be unsuited for wireless micro-sensor networks. In this work, we question this conventional...
Distributed TCP Caching for Wireless Sensor Networks (2004)
Adam Dunkels, Juan Alonso, Thiemo Voigt
Abstract — Many applications of wireless sensor networks are useful only when connected to an external network. Previous research on transport layer protocols for sensor networks has focused on...
Connecting Wireless Sensornets with TCP/IP Networks (2004)
Adam Dunkels, Juan Alonso, Thiemo Voigt, Hartmut Ritter, Jochen Schiller
Abstract. Wireless sensor networks are based on the collaborative efforts of many small wireless sensor nodes, which collectively are able to form networks through which sensor information can be...
Connecting Wireless Sensornets with TCP/IP Networks (2004)
Adam Dunkels, Juan Alonso, Thiemo Voigt, Hartmut Ritter, Jochen Schiller
Abstract. Wireless sensor networks are based on the collaborative efforts of many small wireless sensor nodes, which collectively are able to form networks through which sensor information can be...
Bounds on the energy consumption of routings in wireless sensor networks (2004)
Juan Alonso, Adam Dunkels, Thiemo Voigt
Abstract. Energy is one of the most important resources in wireless sensor networks. We use an idealized mathematical model to study the impact of routing on energy consumption. We find explicit...
Distributed TCP Caching for Wireless Sensor Networks (2004)
Adam Dunkels, Juan Alonso, Thiemo Voigt
Abstract — Many applications of wireless sensor networks are useful only when connected to an external network. Previous research on transport layer protocols for sensor networks has focused on...
Solar-aware Clustering in Wireless Sensor Networks. (2004)
Voigt, Thiemo, Ritter, Hartmut, Schiller, Jochen, Dunkels, Adam, Alonso, Juan
Connecting Wireless Sensornets with TCP/IP Networks. (2004)
Dunkels, Adam, Voigt, Thiemo, Alonso, Juan, Ritter, Hartmut, Schiller, Jochen
Making TCP/IP Viable for Wireless Sensor Networks (2003)
Dunkels, Adam, Alonso, Juan, Voigt, Thiemo
The TCP/IP protocol suite, which has proven itself highly successful in wired networks, is often claimed to be unsuited for wireless micro-sensor networks. In this work, we question this conventional...
Making TCP/IP Viable for Wireless Sensor Networks (2003)
Dunkels, Adam, Alonso, Juan, Voigt, Thiemo
The TCP/IP protocol suite, which has proven itself highly successful in wired networks, is often claimed to be unsuited for wireless micro-sensor networks. In this work, we question this conventional...
Bounds on the Energy Consumption of Routings in Wireless Sensor Networks (2003)
Alonso, Juan, Dunkels, Adam, Voigt, Thiemo
Energy is one of the most important resources in wireless sensor networks. We use an idealized mathematical model to study the impact of routing on energy consumption. Our results are very general...
Bounds on the Energy Consumption of Routings in Wireless Sensor Networks (2003)
Alonso, Juan, Dunkels, Adam, Voigt, Thiemo
Energy is one of the most important resources in wireless sensor networks. We use an idealized mathematical model to study the impact of routing on energy consumption. Our results are very general...
Connecting Wireless Sensornets with TCP/IP Networks (2003)
Dunkels, Adam, Voigt, Thiemo, Alonso, Juan, Ritter, Hartmut, Schiller, Jochen
Wireless sensor networks are based on the collaborative efforts of many small wireless sensor nodes, which collectively are able to form networks through which sensor information can be gathered....
Connecting Wireless Sensornets with TCP/IP Networks (2003)
Dunkels, Adam, Voigt, Thiemo, Alonso, Juan, Ritter, Hartmut, Schiller, Jochen
Wireless sensor networks are based on the collaborative efforts of many small wireless sensor nodes, which collectively are able to form networks through which sensor information can be gathered....
Homological finite derivation type (2003)
Alonso, Juan, Hermiller, Susan M.
In 1987, Squier defined the notion of finite derivation type for a finitely presented monoid. To do this, he associated a 2-complex to the presentation. The monoid then has finite derivation type if,...
Homological finite derivation type (2003)
Alonso, Juan, Hermiller, Susan M.
In 1987, Squier defined the notion of finite derivation type for a finitely presented monoid. To do this, he associated a 2-complex to the presentation. The monoid then has finite derivation type if,...
Jörg Schlüter, Heinz Pitsch, Parviz Moin, Sriram Shankaran, Sangho Kim, Juan Alonso
The numerical prediction of the entire aero-thermal flow through an entire gas turbine is currently limited by its high computational costs. The approach presented here intends to use several...
We present an algorithm to solve a deterministic form of a routing problem in delay tolerant networking, in which contact possibilities are known in advance. The algorithm starts with a finite set of...
Multi Path Routing Algorithm for IP Networks Based on Flow Optimisation (2002)
Arahamsson, Henrik, Algren, Bengt, Alonso, Juan, Kreuger, Per
Multi Path Routing Algorithm for IP Networks Based on Flow Optimisation (2002)
Arahamsson, Henrik, Ahlgren, Bengt, Alonso, Juan, Kreuger, Per
A Multi Path Routing Algorithm for IP Networks Based on Flow Optimisation. (2002)
Abrahamsson, Henrik, Ahlgren, Bengt, Alonso, Juan, Andersson, Anders, Kreuger, Per
A Multi Path Routing Algorithm for IP Networks Based on Flow Optimisation. (2002)
Abrahamsson, Henrik, Ahlgren, Bengt, Alonso, Juan, Andersson, Anders, Kreuger, Per
Objective Functions for Balance in Traffic Engineering (2002)
Alonso, Juan, Abrahamsson, Henrik, Ahlgren, Bengt, Andersson, Anders, Kreuger, Per
We prove a result concerning objective functions that can be used to obtain efficient and balanced solutions to the multi-commodity network flow problem. This type of solution is of interest when...
Objective Functions for Balance in Traffic Engineering (2002)
Alonso, Juan, Abrahamsson, Henrik, Ahlgren, Bengt, Andersson, Anders, Kreuger, Per
We prove a result concerning objective functions that can be used to obtain efficient and balanced solutions to the multi-commodity network flow problem. This type of solution is of interest when...
From QoS provisioning to QoS charging (2002)
Abrahamsson, Henrik, Ahlgren, Bengt, Alonso, Juan, Andersson, Anders, Kreuger, Per
Objective Functions for Balance in Traffic Engineering (2002)
Abrahamsson, Henrik, Ahlgren, Bengt, Alonso, Juan, Kreuger, Per
We prove a result concerning objective functions that can be used to obtain efficient and balanced solutions to the multi-commodity network flow problem. This type of solution is of interest when...
A Multi Path Routing Algorithm for IP Networks Based on Flow Optimisation (2002)
Henrik Abrahamsson, Bengt Ahlgren, Juan Alonso, Anders Andersson, Per Kreuger
Abstract. We present an intra-domain routing algorithm based on multicommodity flow optimisation. It is neither constrained by weight-tuning of legacy protocols, such as OSPF, nor requires a totally...
An Adjoint Method for the Calculation of Remote Sensitivities (2002)
Siva K. Nadarajah, Antony Jameson, Juan Alonso
This paper presents an adjoint method for the calculation of remote sensitivities in supersonic flow. The goal is to develop a set of discrete adjoint equations and their corresponding boundary...
A Multi Path Routing Algorithm for IP Networks Based on Flow Optimisation (2002)
Henrik Abrahamsson, Bengt Ahlgren, Juan Alonso, Anders Andersson, Per Kreuger
Intra-domain routing in the Internet normally uses a single shortest path to forward packets towards a specific destination with no knowledge of tra#c demand. We present an intra-domain routing...
From QoS provisioning to QoS charging (2002)
Abrahamsson, Henrik, Ahlgren, Bengt, Alonso, Juan, Andersson, Anders, Kreuger, Per
This piece consists of three sections that present a total of eight black human figures amongst green vegetation, against a blue background. The top of the piece is bordered with a blue and red...