Search results

We present a dynamical study of the double parton distribution in impact parameter space, which enters into the double scattering cross section in hadronic collisions. This distribution is analogous to the generalized parton densities in momentum space. We use the Lund Dipole Cascade model, presented in earlier articles, which is based on BFKL evolution including essential higher order corrections

Gift-for-sex (GFS) barters are a niche practice potentially representing the commodification of everyday dating practices. We inquire how GFS exchanges are practiced and understood in contemporary Russia. Second, we situate these in relation to contemporary economic culture. Our project provides answers in two steps based on online content. First, we identify GFS exchange practices within a major

Evaluation of IT investments is a difficult and complicated issue. This chapter presents a framework for control of IT investments with the aim of providing decision-makers with a clear picture of individual IT investments as well as an aggregated level where all IT investments are combined into a total picture. The framework has been developed using an action–research approach.In a number of work

This article assesses the main innovations in the newly adopted Directive 2015/1513 on renewable energy and biofuels in the EU transport sector. It analyses the strengths and weaknesses of this legal framework and reflects on possible future elaborations of the EU approach to renewable energy and sustainable biofuels in the transport sector. These developments must be in balance with the productio

The base of the world economic pyramid, generally called the base of the pyramid (BoP), consists of four billion people with average daily income of four dollars. Over the past several years, the design and development of products and services for BoP markets has been investigated by several authors from different disciplines. While some authors suggest a systems approach to design and develop pro

In the issue of using Life cycle assessment (LCA) for assessing E-commerce, we had some epistemological observations, via content analyse method, indicating that LCA has not only aspects of the ‘Systems Approach’ but also of the ‘Analytical Approach’, with even less emphasis on the former in practical terms. The purpose of this paper is to shed light on the connection among these observations, and

Carotid endarterectomy (CEA) is a standardized surgical procedure and is the third most common vascular surgical procedure in Sweden. To improve the quality of pre- and postoperative care for patients undergoing elective CEA, a standardized care plan (SCP) was developed and implemented during Spring of 2007 at a vascular clinic in Sweden. In order to spread light on obstacles and possibilities in

Second-generation bioethanol produced from various lignocellulosic materials, such as wood, agricultural or forest residues, has the potential to be a valuable substitute for, or a complement to, gasoline. One of the crucial steps in the ethanol production is the hydrolysis of the hemicellulose and cellulose to monomer sugars. The most promising method for hydrolysis of cellulose to glucose is by

Popular Abstract in Swedish En burk målarfärg som har lämnats bortglömd, en senapsflaska som länge har stått upprätt i ett kylskåp eller ett nyinköpt filmjölkspaket som precis ska öppnas. Det finns många vardagliga situationer där vi stöter på separation av fasta partiklar från vätskan i så kallade suspensioner. Separationsprocessen kallas sedimentering och är den tillämpning som genomgående motivA consistent theme throughout this thesis is quasilinear partial differential equations (PDEs) appearing in one-dimensional models of sedimentation for solid-liquid separation of suspensions. We mainly focus on continuous sedimentation in so-called clarifier-thickeners (CTs), which are found in mineral processing and wastewater treatment. In addition to complications with shocks and non-unique sol

Since about 25 years ago work has been dedicated to the development of hydrodynamical model atmospheres for cool stars (of A to T spectral type). Despite their obviously sounder physical foundation in comparison with standard hydrostatic models, their general application has been rather limited. In order to understand why this is, and how to progress, we review the present status of hydrodynamical

A stochastic model based on a probability density function (PDF) was developed for the investigation of different conditions that determine knock in spark ignition (SI) engine, with focus on the turbulent mixing. The model used is based on a two-zone approach, where the burned and unburned gases are described as stochastic reactors. By using a stochastic ensemble to represent the PDF of the scalar

Two observations serve as starting points for this paper. First, conventional risk assessment techniques provide sophisticated ways to identify and estimate hazards, but eschew the fact that there is no risk unless something of value is considered to be at stake. Second, what managers consider as being of value follows from how they organize their managerial practice. Based on these observations,

Popular Abstract in Swedish Villkoren för utbildning och undervisning förändras i väsentliga avseenden i takt med samhällets tilltagande komplexitet. Det är många gånger svårt för både lärare och elever att veta hur man på bästa sätt ska orientera sitt pedagogiska handlande. Med utgångspunkt från tre pedagogiska kontexter - grundskolan, de särskilda ungdomshemmen och grundskollärarutbildningen - pPedagogical practice is, in several important considerations, contradictory in character. In this dissertation attenention is drawn towards the field of tension that prevails between pedagogical action, which can be descibed in terms of strategic processes and communicative pedagogical action. While the former places the preconditions for effective knowledge development of the individual at the ce

We have previously proposed a blind system identification method that exploits the underlying dynamics of non-Gaussian signals in [Li and Andersen, "Blind identification of Non-Gaussian Autoregressive Models for Efficient Analysis of Speech Signals," Proceedings of the International Conference on Acoustics, Speech and Signal Processing (ICASSP), May 2006, vol. 1, pp. I-1205-1-1208]. The signal mod

The globalization of English in Sweden is examined as it takes shape in educational policy and practice. Following in the tradition of a “new wave” of language policy and planning research that emphasizes connections between policy and how it is interpreted by local stakeholders, this investigation focuses on textual data from Swedish national curricular documents and observational data of preserv

Initial results from the XUV undulator beamline at the 4.5 GeV storage ring DORIS are reported. The beamline consists of three different undulators mounted on a revolver type device and a modified SX-700 plane grating monochromator with a spherical focusing mirror. It covers the spectral range from 50–2000 eV with excellent spectral resolution and high photon flux. In the energy range 400 eV to 1

Generated aerosol particle deposition has been applied in laboratory scale to induce deactivation of commercial Selective Catalytic Reduction (SCR) catalysts of V2O5-WO3/TiO2 monolithic type. The monolithic catalyst has been exposed to the generated submicrometer particle of inorganic salts, KCl, K2SO4, and ZnCl2 at 200°C in a tubular reactor. The generated particles have been deposited on the cat