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Turbulent flow and heat transfer in outward transverse and helically corrugated tubes are performed with large eddy simulation by the ANSYS Fluent software. The prediction accuracy is validated by comparison with experimental data and empirical correlations for a wavy surface wall and smooth tube, respectively. The turbulent flow patterns, local heat transfer, and friction factor are discussed. Th

The minimum edge dominating set (MEDS) is one of the fundamental covering problems in graph theory, which finds many practical applications in diverse domains. In this paper, we propose a meta-heuristic approach based on genetic algorithm and local search to solve the MEDS problem. Therefore, the proposed method is considered as a memetic search algorithm which is called Memetic Algorithm for mini

The Tamil procedures for computing the circumstances of eclipses were reported by the French astronomer Guillaume Le Gentil from his visit to India in the 1760's. This paper investigates these Tamil procedures for a solar eclipse, focusing on the procedures for finding the eclipse parallax which are needed to describe the local appearance of an eclipse. These procedures constitute the essential di

Reading out the parity degree of freedom of Majorana bound states is key to demonstrating their non-Abelian exchange properties. Here, we present a low-energy model describing localized edge states in a two-arm device. We study parity-to-charge conversion based on coupling the superconductor bound states to a quantum dot whose charge is read out by a sensor. The dynamics of the system, including t

In this paper, we examine the problem of target detection for the multistatic passive radar. Passive radar systems leverage the existing wireless sources, such as radio/TV stations and cellular signals that are referred to as illuminators of opportunity (IOs), to illuminate the environment and provide surveillance functions. Usually, these IO source signals are sparse or locally sparse in the freq

Most current results on coverage control using mobile sensors require that one partitioned cell is associated with precisely one sensor. In this paper, we consider a class of coverage control problems involving higher order Voronoi partitions, motivated by applications where more than one sensor is required to monitor and cover one cell. Such applications are frequent in scenarios requiring the se

The aim of this study is to understand how a new nationwide nonprofit organization, Victim Support Sweden (VSS), emerged in just a few years without public or political demand. In this qualitative study, we reconstruct and follow the first years of the organization. The study is based on a content analysis of VSS’s archival documents from 1988 to 1992 and retrospective interviews with key persons.

In this paper, we compare capacity performances of three terminal dual-antenna configurations at 2.65 GHz based on extensive 2 by 2 multiple-input multiple-output (MIMO) channel measurements in an urban macrocellular environment. Both noise- and interference-limited scenarios are investigated. Our results show that, on average over the measurement route, the capacity performance is mainly determin

We construct small amplitude gravity-capillary water waves with small nonzero vorticity, in three spatial dimensions, bifurcating from uniform flows. The waves are symmetric, and periodic in both horizontal coordinates. The proof is inspired by Lortz' construction of magnetohydrostatic equilibria in reflection-symmetric toroidal domains. It relies on a representation of the vorticity as the cross

It is proposed in this paper that many geometrical optical illusions, as well as illusory patterns due to motion signals in line drawings. are due to the statistics of visual computations. The interpretation of image patterns is preceded by a step where image features such as lines, intersections of lines, or local image movement must be derived. However, there are many sources of noise or uncerta

Ambiguous practices and identities of NGOs have become a source of increasing concern for all involved in development intervention. But apart from pointing at dishonest marketing and unfortunate unintended consequences of donors’ support, how can we understand these ambiguities? Based on an ethnographic study of local Bangladeshi NGOs, the article explores actions and behaviour of grassroots NGO s

Gambella is one of the regional states in Ethiopia where huge tracts of land have been leased out to domestic and international investors since the global food, fuel and financial crisis of 2007/2008. The Gambella region is also one of the most marginalized regions in Ethiopia. It has been alienated from the central politics and socio-economic activities of the state. In the past, the Gambella reg

In this investigation we show that the entropy of the two-dimensional infinite-state Potts model is linear in configurational energy in the thermodynamic limit. This is a direct consequence of the local convexity of the microcanonical entropy, associated with a finite system undergoing a first-order transition. For a sufficiently large number of states q, this convexity spans the entire energy ran

Hur och i vilken omfattning högre lärosäten (universitet och högskolor) i Sverige samverkar med samhället har debatterats i media såväl som i forskningen. Denna artikel belyser den formaliseringsprocess som skett i kölvattnet av nya regleringar och politiska krav på samverkan. I studien analyseras officiella dokument och intervjuer med universitetsanställda vid två svenska lärosäten. Analysen fokuHow and to what extent higher education institutions in Sweden are collaborating with society has been debated in public media and in research. This article highlights the formalisation of the Swedish collaboration policy following a reinforced regulation and political pressures. In the study, official university documents and interviews with university employees at two Swedish universities are an

The purpose of this thesis is to construct a passive bistatic radar system using two USRP N200 software defined radios and two ordinary TV-antennas. Several auxiliary components were used in order to align and calibrate the devices including an octoclock CDA-2990, switch and signal generator. Several tests were made to verify that the sampling started simultaneously and that no significant phase s

Med utgångspunkt i en kvalitativ ansats undersöker och problematiserar denna studie hur medarbetare i en flexibel organisation, genom den interna kommunikationen, befäster och omförhandlar organisationens identitet. Vidare skapar den förståelse för de flexande medarbetarnas möjlighet till medskapande, och deras syn på vikten av att kunna identifiera sig med organisationen de jobbar på. Studien basBased on a qualitative approach, this study examines and problematizes how employees in a flexible organization, through the internal communication community, consolidate and renegotiate the organization's identity. Furthermore, it creates an understanding of the flexible employees ability to co-create, and their view on the importance of being able to identify themselves with the organization

Abstracts, NS166: Emerging Quantum Technologies Heike Riel (overview talk): Computing – From Bits to Qubits Classical computers which represent information as bits have evolved over many years in an unprecedented way and became ubiquitous in our life. Today these classical technologies based on miniaturization are reaching their limits and new computing paradigms are in quest to reduce power consu

https://www.nano.lu.se/sites/nano.lu.se/files/2022-08/Abstracts_NS166_V2.pdf - 2025-12-20

NGEA21 The Climate system Course Summary for” NGEA21-The climate system” vt 2022 Course coordinator: Maj-Lena Linderson Teachers in the course: NGEA21, The climate system Number of students: 28 registered students Grade distribution: 20 G, 8 VG. Evaluation Summary of the course evaluation Number of survey responses: 6, of which is 21 % of the students Short summary of the evaluation responses: In

https://www.nateko.lu.se/sites/nateko.lu.se/files/2023-03/NGEA21%20course%20evaluation%20summary%202022.pdf - 2025-12-20

10th Øresund Workshop on Radiotherapy March 1-2, 2023 March 1st 09:15-09:45 Registration, coffee & sandwich 09:45-10:00 Welcome and Introduction 10:00-10:30 Leadership Perspectives – Lotte Engell-Nørregård, Herlev 10:30-11:00 Proffered Papers 1 • André Haraldsson: Initial experience of MLC tracking for cancer in prostate and lung. • Sören Möller: Repeated stereotactic radiosurgery for relapsed bra

https://www.msf.lu.se/sites/msf.lu.se/files/2023-02/2023_02_03_Program_%C3%96W23.pdf - 2025-12-20

Urban focus in climate change adaptation and risk reduction KLIMAT I FOKUS | Nr 12 • 2014 | LUND UNIVERSITY 2 KLIMAT I FOKUS | Nr 12 • 2014 More effective urban adaptation planning needed The latest IPCC report (AR5) highlights the urgent need to address risk in urban development and planning. It states with very high confidence that extreme precipitation, inland and coastal flooding, heat stress,

https://www.hallbarhet.lu.se/sites/hallbarhet.lu.se/files/christine_wamsler_final_small.pdf - 2025-12-20