| 1. |
- Nijkamp, P., et al.
(författare)
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Towards a regional science academy : A manifesto
- 2016
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Ingår i: Region. - : European Regional Science Association. - 2409-5370. ; 3:1, s. R1-R16
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Tidskriftsartikel (refereegranskat)abstract
- This Manifesto provides a joint proposal to create a Regional Science Academy as a think-tank support platform for a strategic development of the spatial sciences. The Regional Science Academy is a strategic spatial knowledge catalyst: it acts as a global intellectual powerhouse for new knowledge network initiatives and scholarly views on regions and cities as vital centrepieces of interconnected spatial systems. This contribution highlights its role and presents various activity plans.
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| 2. |
- Zetterberg, P., et al.
(författare)
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Initial multi-node and antenna transmitter and receiver architectures and schemes; Deliverable D5.1
- 2016
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- This deliverable provides the initial concepts and solutions from the technical work related to multi-antenna and multi-node transceiver schemes in millimetre wave (denoted as 6-100GHz) spectrum. It also briefly presents the use cases on which the work will be based and categorises the solutions in terms of their applicability to access, backhaul and relay deployments. Another important contribution from this report is the modelling of the hardware impairments in millimetre wave transceivers and the analysis of their impact on system performance.
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| 3. |
- Adkisson, J. M., et al.
(författare)
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A shell-like model for general purpose programming
- 2019
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Ingår i: ACM International Conference Proceeding Series. - New York, NY, USA : Association for Computing Machinery. - 9781450362573
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Konferensbidrag (refereegranskat)abstract
- Shell scripting languages such as bash are designed to integrate with an OS, which mainly involves managing processes with implicit input and output streams. They also attempt to do this in a compact way that could be reasonably typed on a command-line interface. However, existing shell languages are not sufficient to serve as general-purpose languages-values are not observable except in raw streams of bytes, and they lack modern language features such as lexical scope and higher-order functions. By way of a new programming language, Magritte, we propose a general-purpose programming language with semantics similar to bash. In this paper, we discuss the early design of such a system, in which the primary unit of composition, like bash, is processes with input and output channels, which can be read from or written to at any time, and which can be chained together via a pipe operator. We also explore concurrency semantics for such a language.
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| 4. |
- Andrekson, Peter, 1960, et al.
(författare)
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Optical phase-sensitive sampling for high fidelity capture of advanced, high baud-rate optical waveforms and signals
- 2010
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Ingår i: 2010 ITG Symposium on Photonic Networks, Leipzig, Germany, 3-4 May 2010. - 9783800732494 ; , s. Art. no. 5755970-
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Konferensbidrag (refereegranskat)abstract
- We discuss all-optical sampling techniques to capture optical waveforms with both high fidelity and time resolution. Different approaches are possible, each with associated performance - complexity trade-offs. We cover not only sampling of intensity waveforms but also complex modulation formats such as QPSK and 16-QAM and also discuss the distinctions between real time sampling and equivalent-time sampling.
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| 5. |
- Belorizky, Elie, et al.
(författare)
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Comparison of different methods for calculating the paramagnetic relaxation enhancement of nuclear spins as a function of the magnetic field
- 2008
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Ingår i: Journal of Chemical Physics. - : American Institute of Physics (AIP). - 0021-9606 .- 1089-7690. ; 128:5
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Tidskriftsartikel (refereegranskat)abstract
- The enhancement of the spin-lattice relaxation rate for nuclear spins in a ligand bound to a paramagnetic metal ion [known as the paramagnetic relaxation enhancement (PRE)] arises primarily through the dipole-dipole (DD) interaction between the nuclear spins and the electron spins. In solution, the DD interaction is modulated mostly by reorientation of the nuclear spin-electron spin axis and by electron spin relaxation. Calculations of the PRE are in general complicated, mainly because the electron spin interacts so strongly with the other degrees of freedom that its relaxation cannot be described by second-order perturbation theory or the Redfield theory. Three approaches to resolve this problem exist in the literature: The so-called slow-motion theory, originating from Swedish groups [Benetis et al., Mol. Phys. 48, 329 (1983); Kowalewski et al., Adv. Inorg. Chem. 57, (2005); Larsson et al., J. Chem. Phys. 101, 1116 (1994); T. Nilsson et al., J. Magn. Reson. 154, 269 (2002)] and two different methods based on simulations of the dynamics of electron spin in time domain, developed in Grenoble [Fries and Belorizky, J. Chem. Phys. 126, 204503 (2007); Rast et al., ibid. 115, 7554 (2001)] and Ann Arbor [Abernathy and Sharp, J. Chem. Phys. 106, 9032 (1997); Schaefle and Sharp, ibid. 121, 5387 (2004); Schaefle and Sharp, J. Magn. Reson. 176, 160 (2005)], respectively. In this paper, we report a numerical comparison of the three methods for a large variety of parameter sets, meant to correspond to large and small complexes of gadolinium(III) and of nickel(II). It is found that the agreement between the Swedish and the Grenoble approaches is very good for practically all parameter sets, while the predictions of the Ann Arbor model are similar in a number of the calculations but deviate significantly in others, reflecting in part differences in the treatment of electron spin relaxation. The origins of the discrepancies are discussed briefly.
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| 6. |
- Cassel, Claes M., et al.
(författare)
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On measurement of intangible assets: A study of robustness of partial least squares
- 2000
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Ingår i: Total quality management. - : Taylor & Francis Group. - 1360-0613 .- 0954-4127. ; 11:7, s. 897-907
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Tidskriftsartikel (refereegranskat)abstract
- The customer asset is an important intangible. Its value depends, for example, on the customer satisfaction level. Thus, it is important to monitor that level, and to identify cost-efficient actions to improve it. The European Customer Satisfaction Index (ECSI) system is based on a structural model for such monitoring, a model that is estimated by partial least squares (PLS). The robustness of PLS applied on an ESCI-like measurement model is studied in the present paper. Monte Carlo simulations show that PLS is reasonably robust against multicollinearity, skew response distributions and various types of model misspecifications. This is true, in particular, when estimating the customer satisfaction index.
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| 7. |
- Eklöf, Jan A., et al.
(författare)
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The pan-European customer satisfaction index programme-current work and the way ahead
- 2002
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Ingår i: Total quality management. - : Taylor & Francis Ltd. - 1360-0613 .- 0954-4127. ; 13:8, s. 1099-1106
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Tidskriftsartikel (refereegranskat)abstract
- Any organization has to listen to its external customers and clients. In a number of studies it has been shown that the long-term success of a corporation is closely related to its possibility to adapting to customer needs and changing preferences. Satisfying customers should thus be a goal in its own right for all future-oriented organizations. In order to monitor customer satisfaction and to take action to improve it, a number of different methods have been devised and implemented in practice. However, for the purpose of real usefulness, a number of criteria have to be fulfilled on any such measurement system, not least if the ambition is to compare and benchmark. This is the spirit in which the Pan-European intiative to develop, launch and implement a system for comparable aggregate (national) Performance Satisfaction Index studies (the EPSI Rating) has evolved. In the paper the EPSI Rating model for comparable Customer Satisfaction Index (CSI) is presented and the fulfilment of the quality criteria are elaborated, based on three years of national studies. In this context, possibilities and limitations for systematic comparisons are highlighted using a combined time-series and cross-section approach. It is also illustrated how the EPSI Rating results may be combined with company specific measures using a similar framework in order to arrive at proposals for strategic and operational improvements. Furthermore, lessons learned so far are discussed and an agenda for future development is presented.
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| 8. |
- García-Pérez, Ó, et al.
(författare)
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Shot-noise suppression effects in InGaAs planar diodes at room temperature
- 2015
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Ingår i: Journal of Physics: Conference Series. - : IOP Publishing. - 1742-6588 .- 1742-6596. ; 647:1
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Konferensbidrag (refereegranskat)abstract
- In this work, the noise characteristics of InGaAs planar diodes are studied. The presence of a recessed region originates a barrier in the potential profile, which can modulate the passage of ballistic carriers along the structure. This effect, in turn, may lead to suppressed levels of noise with respect to the full Poissonian value due to Coulomb interaction. With the aim of evidencing such phenomenon, the noise properties of a set of devices with different dimensions have been measured at room temperature. Some evidence of potential shot-noise suppression is observed in the results, but the undesired effect of resistive contacts and accesses has been found to be a limiting factor to quantify the suppression accurately.
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| 9. |
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| 10. |
- Hackl, Peter, et al.
(författare)
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Structural analysis and measurement of customer perceptions, assuming measurement and specifications errors
- 2001
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Ingår i: Total quality management. - : Taylor & Francis Ltd. - 1360-0613 .- 0954-4127. ; 12:7-8, s. 873-881
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Tidskriftsartikel (refereegranskat)abstract
- In previous research (e.g. Cassel et al., 1999,Journal of Applied Statistics26, pp. 435-446; Cassel et al., 2000, Total Quality Management, 11, pp. 897-907) the bias and precision effects, for various specification problems, on the structural analysis and measurement of customer perceptions have been studied. In this paper the combined effects of some of the most significant problems, misspecifications and skew response distributions, and certain types of measurement errors, are studied. The measurement errors considered reflect the bias due to the inertia of respondents in adapting to changes. In the situation of repeated measurements, the later response tends to be biased towards the former response. This effect can be modelled by implementing certain change filtering assumptions. A simulation study using the European Performance Satisfaction Index (EPSI) structure demonstrates that the EPSI measurement methodology using partial least squares is very robust with respect to the problems introduced in the simulations. This is true, in particular, when estimating the inner structure of the model and when estimating the outer measurement relations of the model. The estimated values of the latent variables (such as the customer satisfaction index) are affected in an expected way.
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