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This article presents a theoretical framework for deriving simple analytical expressions for spurs resulting from second and third order nonlinearities in fractional-N phase locked loops (PLL). Furthermore, a previously proposed linearization technique where several sigma-delta modulators (SDMs) operate in parallel with relative time offsets between them, is further analyzed using the periodic non
The 1955-56 macroeconomic crisis is a central event in modern Irish history. Yet, despite this centrality, its causes are not clearly understood. In 1955-6, Ireland, which had previously followed British interest rates in lockstep as part of its fixed exchange with the latter, briefly experimented with independent monetary policy. Our contribution is twofold. First, we highlight how the Irish resp
In the late Middle Ages, hundreds of Christians from all over Europe sent supplications to the Papal Curia to be freed from promises made under duress. This article analyses the supplications about forced marriages that were submitted to the Apostolic Penitentiary during the pontificate of Pope Innocent VIII (1484–92). The study is based on mainly unedited source material that has not been investi
Plesiosaurs are secondarily aquatic reptiles with a fossil record extending over 140 million years, and their fossilised remains have been found in sediments deposited in both warm, equatorial waters and cold, high-latitude environments. They are usually portrayed as a snake threaded through the body of a sea turtle. However, due to a general absence of preserved soft tissues, reconstructing the l
The present study aimed to increase understanding of how singing activities may be initiated in primary school, and what support and assistance teachers require to conduct singing activities as an integrated part of the school day. Five music teachers participated in a focus group interview. The following main themes were identified: 1) pedagogical and methodological flexibility, 2) the role of ro
In this paper, we consider near-field localization and sensing with an extremely large aperture array under partial blockage of array antennas, where spherical wavefront and spatial non-stationarity are accounted for. We propose an Ising model to characterize the clustered sparsity feature of the blockage pattern, develop an algorithm based on alternating optimization for joint channel parameter e
The 2021 edition of Lund Architecture Symposium (LAS21) will address the emergence of transformatory practices in architecture.The pressing contemporary challenges in global discourse require architects to dissolve – even obliterate – the conventional boundaries between design and implementation. These transformatory practices combine multiple skills from various industries to advance the conjavas
Mental imagery allows us to simulate events and experiences and plays a crucial role in language comprehension. Vividness, defined as the subjective richness and clarity of these simulations, varies across individuals and contexts. Whether mental imagery vividness decreases when processing in a non-native (L2) compared to a native (L1) language remains debated (Montero-Melis et al., 2020). Reducti
This paper proposes the concept ‘necropolitics of peacebuilding’ to analyse how contemporary geographies of peace and post-war violence are shaped by the articulation of race, space, politics and the coloniality of power. We explore how post-conflict programmes, plans and policies shape the uneven distribution of life and death, focussing in particular on the elimination of indigenous leaders. Dra
This paper extends research on geographies of ageing in relation to urban academic and policy debates. We illustrate how older people in urban African contexts deploy their agency through social and spatial (im)mobilities, intergenerational relations and (inter)dependencies. Through doing so, we reveal how urban contexts shape, and are shaped by, older people’s tactics for seizing opportunities an
Most research on issues of (in)security has tended to have a military/safety angle and focus on global/national scales linked to spectacular events. This paper addresses the overlooked insecurity realities of urban dwellers in the global South through a focus on more persistent and enduring forms of employment insecurities among young people. Building on both quantitative and qualitative data coll
Despite an increased focus on entrepreneurship as a means of promoting development, there has been limited discussion of the conceptual and methodological issues related to researching entrepreneurship in low-income countries. Drawing on experiences from Uganda, this paper presents a study of entrepreneurship conducted in a low-income settlement, which combined participatory quantitative and quali
The 'street' and 'youth' have long been issues of social concern and the subject of research both in Brazil and elsewhere. The perception and experiences of youth in relation to the street, however, and the corresponding gender and class relations which permeate these, remain an under-researched topic. Drawing on fieldwork conducted in low- and middle-income neighbourhoods in Recife, this paper sh
BACKGROUND: One key element of lung-protective ventilation is the use of a low tidal volume (VT). A sex difference in use of low tidal volume ventilation (LTVV) has been described in critically ill ICU patients.OBJECTIVES: The aim of this study was to determine whether a sex difference in use of LTVV also exists in operating room patients, and if present what factors drive this difference.DESIGN,
This article examines the ways in which parenting practices of refugee parents are the object of concern for the Danish welfare state. Emphasis is placed on how interventions of daycare institutions and other welfare professionals have been experienced by refugee families who live in a context of radical uncertainty since they hold temporary residence permits in Denmark. Based on ethnographic fiel
Filtration through porous media is the oldest form of drinking water treatment and, to this day, constitutes a focal point of research in water engineering. Mathematical models of filtration are often used in conjunction with supplementary models of concurrent phenomena. For instance, both fluid flow inside and outside the filtering medium are of interest, and models of both flow through porous me
