cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Non-Intrusive Measurements of Air-Water Flow Properties in Supercritical Flows Down Grass-Lined Spillways
Creators: name: Cui, H.
name: Felder, S.
name: Kramer, M.
Publisher: name: Utah State University
Year: 2023

description: Grass-lined spillways constitute an environmentally friendly alternative to conventional concrete structures with flat slope and therefore may contribute to water-sensitive urban design. Research into supercritical self-aerated flows down grass-lined spillways has commenced recently, but important knowledge gaps related to air entrainment, flow resistance and bubble-canopy interaction are yet to be filled. This study presents first results of an experimental investigation into flows over a rough grass-lined channel bed with embankment slope. The deployed measurement instruments included acoustic displacement meters (ADMs) and a conventional intrusive phase-detection probe. A transformation of measured free-surface elevations into multiple time series of instantaneous air concentrations allowed to non-intrusively compute air concentration distributions, dimensionless interface frequency distributions, and chord times. The results demonstrated that the amount of entrapped air was significantly larger than the amount of entrained air. It was further shown that air concentration distributions followed a recently developed semi-analytical solution with a characteristic length that was closely linked with the mean air concentration. The ADM measurements were limited to entrapped air and future research should explore other non-intrusive instrumentation to also explore measurements of entrained air.
Vienna’s Resistance to the “Neoliberal Turn"
Creators: name: Urban, Florian
Publisher: name: FOOTPRINT
Year: 2019

description: At the turn of the twenty-first century, when public authorities all over Europe increasingly retreated from their responsibility for housing, Vienna refrained from large-scale privatisations. Upholding the system of state-subsidised housing, the Austrian capital supported new architecture as a means to regenerate the inner city and to promote innovative social policy. This was based on original design inspired by a variety of mostly modernist precedents. Examples for new residences that follow this strategy include the Car-free Model Estate (1996–99, Cornelia Schindler and Rudolf Szedenik), the women-led scheme Margarete Schütte-Lihotzky-Hof (1993–97, Liselotte Peretti, Gisela Podreka, Elsa Prochazka and Franziska Ullmann), and the residences on the former railway station Nordbahnhof (1992–2015, master plan by Boris Podrecca and Heinz Tesar, buildings by various architects). This article will present Vienna’s turn-of-the-twenty-first-century housing as a successful strategy to provide affordable residences that respond to current needs, and at the same time a way to harness innovative architecture for social policy goals. The Vienna case also suggests that the ‘neoliberal turn’ in housing provision was a matter of political choice rather than economic necessity.
description: FOOTPRINT, Vol. 13 No. 1 (2019): Issue # 24 | Spring / Summer 2019 | The Architecture of Housing after the Neoliberal Turn
Density
Creators: name: Harper, Claire
Publisher: name: FOOTPRINT
Year: 2019

description: The publication of the planning agenda Towards an Urban Renaissance in 1999 marked a turning point in the approach towards urban development in the UK and specifically towards urban density. Density was attributed with a range of physical, environmental and social implications, or at least potentialities. Most significant of these was the association of high urban densities with more sustainable, socially diverse, compact urban models – a positive affiliation that lead to the introduction of minimum density ratios for new urban developments and the gradual introduction of density ratios as a component of development briefs for new urban housing. Elaborating a potted history of architects’ use and manipulation of density ratios, I argue that density has been a critical and effective instrument of the neoliberal agenda. In its capacity to operate as both crude economic measure, and at the same time, qualitative descriptor of the urban experience, density has been a key device in rebranding urban living. In this article, I expound the role that architects have had in negotiating this duality, reviving an image of density that has been essential to its operation as a device for facilitating capital growth.
description: FOOTPRINT, Vol. 13 No. 1 (2019): Issue # 24 | Spring / Summer 2019 | The Architecture of Housing after the Neoliberal Turn
title: Recent Challenges in Design of Spillway – An Indian Scenario
Creators: name: Bhate, R. R.
Publisher: name: Utah State University
Year: 2023

description: There are about 5264 completed large dams in India. These dams are invariably equipped with some or other kind of spillway. As this dam building activity has been going on for many years, all easy sites have already been tapped and are left with sites where designers have to face challenges from nature. Recently, while harnessing the hydropower potential of Himalayan rivers, designers are facing issues like high sedimentation concentration flows, narrow valleys with a high magnitude of the flood, leading to the provision of an additional spillway or multi-tier spillways. Melting of glaciers resulting in increased rates of Glacial Lake Outburst Flow (GLOF) is challenging tasks to design a spillway for debris flow. On the other hand, for existing dams in India, there is a large upward revision in the design flood due to improvements in flood assessment techniques and the availability of huge data for flood assessment. This demands an increase in discharging capacity of the spillways by increasing crest length or providing breaching sections. India has got a large seashore and to utilize the freshwater from the rivers joining the sea, multipurpose dams across the sea in the vicinity of the Gulf can be considered. Special design considerations are to be employed for spillway and energy dissipation arrangements as their operational performance is influenced by cyclic tidal variations and storm surges. This paper makes an attempt to discuss the relevant hydraulic aspects for the design of spillways and energy dissipators for efficient and safe operation.
title: FOOTPRINT, Issue # 22 | Spring / Summer 2018 | Exploring Architectural Form: A Configurative Triad
title: Issue # 22 | Spring / Summer 2018 | Exploring Architectural Form: A Configurative Triad
titleType: AlternativeTitle
Creators: name: FOOTPRINT
Publisher: name: FOOTPRINT
Year: 2018

description: This issue of Footprint follows a tripartite trajectory regarding formal studies. On the one hand, it includes reflections on the way built form is produced, while, on the other, it gathers studies that examine how architectural form appears in discursive and communicative terms. Finally, it serves as an attractor for multiple inquiries into the different relations that can be established between human actions, understood in the broadest possible terms, and the shape of the built environment. By interrelating these three approaches, the aim is to embrace and braid object-based approaches to form with approaches that examine the reciprocity of formal emergence and studies dealing with in-formation. Emulating Joseph Kosuth’s well-known triptychs, a constant problematisation of architectural form is situated between these three topical interpretations, understood as architecture’s configurative triad. Acting on the threshold of various discursive outlines, the contributions to this issue transverse several kinds of formalisms, highlighting that beyond the limitations of any specific discourse, their heterogeneous assemblage can afford the production of theoretical, methodological and conceptual innovations in the field of contemporary formal studies. Issue's editors: Stavros Kousoulas and Jorge Mejía Hernández
description: The Grace Machine: Of Turns, Wheels and Limbs...7-32 Transversing Formalisms...1-6 The Explorative Strategy of Engagement: Atelier Bow-Wow’s Rebière Street Project in Paris...123-134 Autonomy by Drawing: Gianugo Polesello on Route ’66...103-112 'Des Yeux Qui Ne Voient Pas...': The smartphones...135-142 On Bigness and the Problem of Urban Form...65-88 Calling Rowe: After-lives of Formalism in the Digital Age...89-102 The Diagrammatic Inquiry of Architectural Media...33-50 Reconceptualisation of Architects’ Intentionality in Computational Form Generation: A Tripartite Model...51-64 Surform: An Architectural Vocabulary of Morphogenesis...113-122
Coordination Event Detection and Initiator Identification in Time Series Data
Creators: name: Amornbunchornvej, Chainarong
name: Brugere, Ivan
name: Strandburg-Peshkin, Ariana
name: Farine, Damien
name: Crofoot, Margaret C.
name: Berger-Wolf, Tanya Y.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Social and Information Networks (cs.SI)
subject: Artificial Intelligence (cs.AI)
subject: Multiagent Systems (cs.MA)
subject: Econometrics (econ.EM)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Computer and information sciences
subject: FOS: Economics and business
subject: FOS: Physical sciences
subject: G.3; I.2.3; I.2.6; J.4
subject: 06A06, 92B99, 91C99, 68P99

description: Behavior initiation is a form of leadership and is an important aspect of social organization that affects the processes of group formation, dynamics, and decision-making in human societies and other social animal species. In this work, we formalize the "Coordination Initiator Inference Problem" and propose a simple yet powerful framework for extracting periods of coordinated activity and determining individuals who initiated this coordination, based solely on the activity of individuals within a group during those periods. The proposed approach, given arbitrary individual time series, automatically (1) identifies times of coordinated group activity, (2) determines the identities of initiators of those activities, and (3) classifies the likely mechanism by which the group coordination occurred, all of which are novel computational tasks. We demonstrate our framework on both simulated and real-world data: trajectories tracking of animals as well as stock market data. Our method is competitive with existing global leadership inference methods but provides the first approaches for local leadership and coordination mechanism classification. Our results are consistent with ground-truthed biological data and the framework finds many known events in financial data which are not otherwise reflected in the aggregate NASDAQ index. Our method is easily generalizable to any coordinated time-series data from interacting entities.
description: This is the final peer-reviewed version before publishing of the previous pre-print entitled "FLICA: A Framework for Leader Identification in Coordinated Activity"
title: Hydraulic Behavior of Spill Channel of Polavaram Dam Spillway without Left Embankment
Creators: name: Ramarao, Vankayalapati S.
name: Srivastava, Yogendra Nath
Publisher: name: Utah State University
Year: 2023

description: Spill channel is a flood disposing channel excavated on the downstream of spillway which joins the main river course. The purpose of spill channel is to divert the spillway released flood safely to the downstream river course. The alignment of the spill channel may be straight of curved or partially straight and partially curved. It may be in steep gradient or in flat gradient and subjected to supercritical flows or subcritical flows. While disposing of the flood, the flow conditions in the spill channel would be straight without cross waves. Water surface profiles in the convex and concave banks of the spill channel must be confined within the top elevation of the embankments of channel to avoid spilling over the embankments. Thus, the hydraulic design of the spill channel involves keeping the velocities in the channel to allowable limits to prevent erosion of embankments and also confining the water levels to within the top elevation of the embankments. Suitable foundations are necessary to keep the embankments of spill channel stable. If a suitable foundation is not available for embankments, the embankment sometimes may have to be removed, if it would not cause problem in disposing of the desired quantum of flood. Not much literature is available relating to these kinds of studies carried out on large spill channels carrying more than 1.41 lakh m3/s discharge and without one embankment. The general procedure for selection of optimum channel parameters is of trial and error by considering number of alternatives and the hydraulic model studies play a key role in optimising the design of spill channel. Hydraulic model studies of Polavaram Irrigation Project, Andhra Pradesh were carried out in CWPRS, Pune on 1:140 scale 3-D comprehensive model to assess the subcritical flow conditions in spill channel with and without the provision of left embankment for various magnitudes of flood ranging upto 141583 m3/s. Studies enabled optimisation of layout of spill channel to pass the design flood with uniform flow conditions in the spill channel. In this paper, the various aspects of optimization of the hydraulic design of spill channel in disposing of the flood safely to downstream, based on the results of hydraulic model studies are discussed.
The Impact of Looping in an Elementary School Setting
Creators: name: Findley, Maureen
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2018

description: The mandates of federal and state education policies require educational leaders at all levels to select and implement research-based strategies to increase student achievement levels for all students. “Looping, a term coined by Jim Grant, author of the ‘Looping Handbook’ refers to the not-so-new but increasingly common practice of keeping groups students together for two or more years with the same teacher” (Northeast and Islands Regional Educational Lab. at Brown Univ., 1997, p.3). The purpose of this mixed methods study was to investigate the relationship between student assignments to a classroom practicing looping and student achievement on the state’s End-of-Grade (EOG) exam in an elementary school setting. The students’ achievement levels on the third and fourth grade EOG exams were used to determine if the assignment to a looping classroom had a statistically significant impact on student achievement. The comparison focused on disaggregated student subgroups to examine the relationship between the assignment to a looped classroom and the narrowing of the persistent achievement gap between minority students and their Caucasian counterparts. In addition, this study investigated how teachers and administrators practicing looping perceive the impact of looping on student achievement.
          The results of the quantitative portion of this study revealed that students’ assignment to a classroom that practiced looping did not have a statistically significant impact on overall student achievement nor did looping narrow the achievement gap. The results did indicate that assignment to a looping classroom positively impacted mathematical achievement levels for students in the African American subgroup but did not have a statistically significant impact for any other student subgroup. The qualitative portion of this study consisted of semi-structured interviews with the teachers and administrator engaged in looping to provide context and descriptive data. The findings indicated that the teachers and administrators feel that looping is a positive experience for some students and had the potential to positively impact student achievement but is not a positive experience for all students. Overall, the teachers and administrator found looping positively impacted relationships but had limited impact on achievement levels.
title: Experimental and Numerical Investigation on Critical Submergence for Square Water Intakes
Creators: name: Das, B.
name: Ahmad, Z.
name: Sharma, P. K.
Publisher: name: Utah State University
Year: 2023

description: Critical submergence for square water intakes in an open channel flow has been investigated experimentally and numerically in this paper. The depth of water at which the tail of a free surface vortex core just reaches the tip of an intake causing air entrainment is referred to as critical submergence. The formation of an air-entraining vortex in the vicinity of an intake is considered to be a severe problem for pumps. Experiments were conducted in a concrete flume of 9.47 m length, 0.5 m wide, and 0.6 m deep with an intake of size 0.04 m×0.04 m under uniform flow for different flow conditions. A three-dimensional Multiphase CFD Model was also developed for simulating critical submergence for the intakes. SST k-ω turbulence model together with the volume of fluid (VOF) two-phase (water-air) model were used to simulate the flow field in the water intake system. In the CFD simulation study, critical submergence was identified using phase volume fraction analysis and free surface streamline analysis. From both experimental and numerical studies, it is found that the approach flow Froude number and intake flow Froude number play an important role for estimating critical submergence depth. The critical submergence increases with an increase in intake Froude number and decreases with an increase in approach Froude number for a square Intake. The outcomes of the CFD simulation were validated with experimental data.
Blankness
Creators: name: Couling, Nancy
name: Hein, Carola
Publisher: name: FOOTPRINT
Year: 2018

description: Energy logistics is the management and implementation of energy flows and their physical artefacts. This sector has perpetuated and profited from a spatial and conceptual void produced by national and corporate strategies in order to optimise logistical flows and to avoid larger societal debate. Offshore developments, in particular, take place far from the public eye and imagination though they form a core layer of the global petroleumscape. This article explores the history and development of the industrialised void of the North Sea and how energy logistics, strongly determined by the oil and gas industries, shields its presence while at the same time shaping and structuring the built environment at sea and across dedicated land-sea thresholds. Throughout this process, it persistently avoids the emergence of architectural form. We propose that the concept of blankness, first formulated by Roberto Mangabiera Unger and further discussed by Jeffrey Kipnis, is a useful framework for interrogating the architecture of energy logistics, its apparent invisibility, and global impact. For both Unger and Kipnis, blankness signified a potential liberation from established norms, opening the way for new forms of democratic life and architectural expression. Such an interpretation of blankness could enable design professionals and the general public to reclaim architectural expression for the spaces left without meaning by logistics. In conclusion we argue for urgent architectural intervention beyond pure logistics and towards an integrated vision for the common space of the sea.
description: FOOTPRINT, Issue # 23 | Autumn / Winter 2018 | The Architecture of Logistics
Numerical stability of a hybrid method for pricing options
Creators: name: Briani, Maya
name: Caramellino, Lucia
name: Terenzi, Giulia
name: Zanette, Antonino
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computational Finance (q-fin.CP)
subject: FOS: Economics and business

description: We develop and study stability properties of a hybrid approximation of functionals of the Bates jump model with stochastic interest rate that uses a tree method in the direction of the volatility and the interest rate and a finite-difference approach in order to handle the underlying asset price process. We also propose hybrid simulations for the model, following a binomial tree in the direction of both the volatility and the interest rate, and a space-continuous approximation for the underlying asset price process coming from a Euler-Maruyama type scheme. We show that our methods allow to obtain efficient and accurate European and American option prices. Numerical experiments are provided, and show the reliability and the efficiency of the algorithms.
description: arXiv admin note: text overlap with arXiv:1503.03705
title: Surface Velocities and Free-Surface Aeration in a Converging Smooth Chute During a Major Flood Event
Creators: name: Chanson, H.
name: Apelt, C. J.
Publisher: name: Utah State University
Year: 2023

description: In a free-surface spillway, the upstream flow is non-aerated and the flow becomes a strong air-water mix downstream of the onset location of air entrapment. Field observations were conducted over a large dam's spillway during a major flood event. The wastewaterway system was a smooth converging chute with a longitudinal slope of 11.3°: the Chinchilla Minimum Energy Loss weir on the Condamine River (Australia). Detailed quantitative measurements were undertaken in the high-speed chute flows with strong turbulence and high Reynolds numbers at the early part and later part of a major flood event. During this exceptional flood, the spillway passed nearly three times the design discharge capacity at the peak for the event. Down the smooth chute, the observations indicated that the onset of free-surface aeration was a complicated transient three-dimensional process. A robust optical flow (OF) technique was applied and delivered physically-meaningful surface velocities in the air-water flow region. The streamwise surface velocities were reasonably close to backwater calculations. The data presented large streamwise surface velocity fluctuations in the aerated flow region, with Tuₛ ~ 150-200%, on the centreline consistent with self-aerated flow measurements using dual-tip phase detection probe in laboratory. Overall, the study demonstrated the application of optical techniques to prototype smooth spillway flows, as well as some intrinsic difficulties with field investigations.
Radio Sources in the NCP Region Observed with the 21 Centimeter Array
Creators: name: Zheng, Qian
name: Wu, Xiang-Ping
name: Johnston-Hollitt, Melanie
name: Gu, Jun-Hua
name: Xu, Haiguang
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present a catalog of 624 radio sources detected around the North Celestial Pole (NCP) with the 21 Centimeter Array (21CMA), a radio interferometer dedicated to the statistical measurement of the epoch of reionization (EoR). The data are taken from a 12 h observation made on 2013 April 13, with a frequency coverage from 75 to 175 MHz and an angular resolution of ~ 4 arcmin. The catalog includes flux densities at eight sub-bands across the 21CMA bandwidth and provides the in-band spectral indices for the detected sources. To reduce the complexity of interferometric imaging from the so-called "w" term and ionospheric effects, the present analysis are restricted to the east-west baselines within 1500 m only. The 624 radio sources are found within 5 degrees around the NCP down to ~ 0.1 Jy. Our source counts are compared, and also exhibit a good agreement, with deep low-frequency observations made recently with the GMRT and MWA. In particular, for fainter radio sources below ~ 1 Jy, we find a flattening trend of source counts towards lower frequencies. While the thermal noise (~0.4 mJy) is well controlled to below the confusion limit, the dynamical range (~10^4) and sensitivity of current 21CMA imaging is largely limited by calibration and deconvolution errors, especially the grating lobes of very bright sources, such as 3C061.1, in the NCP field which result from the regular spacings of the 21CMA. We note that particular attention should be paid to the extended sources, and their modeling and removals may constitute a large technical challenge for current EoR experiments. Our analysis may serve as a useful guide to design of next generation low-frequency interferometers like the Square Kilometre Array.
description: 16 pages, 21 figures, 7 tables, 1 machine readable table, accepted for publication in ApJ
Talkshow als Subjekt-Diskurs
Creators: name: Seifried, Bettina
Publisher: name: Humboldt-Universität zu Berlin
Year: 2004
Subjects: subject: Mediendiskursanalyse
subject: diskursive Subjektkonstitution
subject: Talkshows
subject: Teilnehmerrollen
subject: social semiotics
subject: Machttechnologien
subject: Oprah Winfrey Show
subject: media discourse analysis
subject: subject positions in discourse
subject: talk shows
subject: participant roles
subject: technologies of power
subject: 300 Sozialwissenschaften, Soziologie, Anthropologie
subject: 14 Soziologie, Gesellschaft

description: Nach einem Überblick über die theoretischen Erklärungsmodelle der diskursiven Subjektkonstitution von Émile Benveniste über Louis Althusser und Michel Foucault zu linguistischen Ansätzen in der Gesprächsanalyse und social semiotics angelsächsischer Provenienz, werden zwei erfolgreiche US-amerikanische "Ratgeber"-Talkshowreihen der neunziger Jahre ("Oprah Winfrey" und "Rolonda") einer umfassenden pragma-linguistisch orientierten Gesprächsanalyse unterzogen. Dazu war es nötig, je drei Sendungen dieser Shows zuerst vollständig zu transkribieren, sie dann in Phasen einzuteilen und Vergleichskriterien zu bestimmen. Die Ausgangshypothese ist, dass trotz großer Ähnlichkeiten im Format, beide Shows erhebliche Unterschiede in der öffentlichen Darstellungsform bzw. Repräsentanz ihrer Teilnehmerrollen (Talkmaster, Gäste und Publikum) und deren Verhältnis zueinander aufweisen, und dass diese erheblichen Abweichungen dem Mikrobereich der lexiko-grammatisch systematisch erfaß- und beschreibbaren Redeweisen und Gesprächsstrukturen implizit eingeschrieben ist. Kernstück der Arbeit ist die Herausarbeitung von Ebenen, auf denen sich diskursiv show-spezifische Teilnehmer-Identitäten konstituieren: Dialogsequenzierung und -organisation, Gebrauch von Personalpronomen und Anredeformen, Fragetypen, narrative Strategien, lexikalische (Selbst-) Kategorisierungen, sämtliche Bereiche der Modalität. Auf dieser Ebene der interpersonellen Funktion von Sprache werden innerhalb der Show-Sendungen und zwischen den beiden Show-Reihen sehr unterschiedliche Gesprächsstrategien deutlich, die sich erstaunlich plausibel mit Foucaults diskursiven Subjektivierungs- vs. Objektivierungsstrategien korrelieren ließen, und also als unterschiedliche Machttechnologien zur Hervorbringung und Reproduktion spezifischer "öffentlicher Subjekte" darstellen, wie sie in medialen Formaten als Abbilder des "Durchschnittsmenschen" in Erscheinung treten. Sie signifizieren Varianten eines "Alltags"-Subjekts (repräsentiert durch die in der Show zu Alltagsproblemen befragten Gäste in ihrem Verhältnis zu Talkmaster und Studiopublikum), das einmal - neoliberal-protestantisch - als rational-einsichtsfähig sich selbst disziplinierend im Diskursfeld des Neoliberalismus-Protestantismus konstituiert und gezeichnet wird, im anderen Falle als irrational-verantwortungslos fremden Regulierungsinstanzen und außengelenkten sprachlichen Disziplinierungs- und Abbitteritualen unterworfen wird und somit eine Teilnehmerrolle innerhalb autoritär-feudalistischen Diskurse charakterisiert.
The Floor is not the Ground
Creators: name: Papamattheakis, George Papam
Publisher: name: FOOTPRINT
Year: 2018

description: Although transportation infrastructures occupy an important part of public space, they have apparently been lead astray by recent developments in logistics services. Despite the categorical difference between transportation and logistics, narratives of quality, security and standards accompanied by specific spatial patterns, have infiltrated our everyday mobility infrastructures. Space structure is defined by logistics-influenced ‘functional diagrams’ and is reduced to mere transitory settings. This essay is an effort to challenge the contemporary ‘fulfilment’-influenced, network-based perception of human transportation spaces, towards, instead, a relational, and effectively political, understanding of them. This is not to return to previous debates on the re-emergence of place and identity, but rather to seek possible strategies of interruption of that detrimental, endlessly intensified circulation imposed on public space. The essay is structured upon two competing ideas, conceptually represented by the notions of floor and ground. The floor is the most important element of logistics architecture, preparing a smooth surface for commodities circulation. By contrast, the ground embraces anomalies representing finitude, an important notion for the project of interruptions. The essay proposes a recalibration and balancing of both these forces, establishing an ecology that also encourages seemingly ‘unproductive’ relations, detours and other spaces of distractions, ideas that logistical architecture cannot even grasp.
description: FOOTPRINT, Issue # 23 | Autumn / Winter 2018 | The Architecture of Logistics
Role of epistasis on the fixation probability of a non-mutator in an adapted asexual population
Creators: name: James, Ananthu
Publisher: name: arXiv
Year: 2016
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: The mutation rate of a well adapted population is prone to reduction so as to have a lower mutational load. We aim to understand the role of epistatic interactions between the fitness affecting mutations in this process. Using a multitype branching process, the fixation probability of a single non-mutator emerging in a large asexual mutator population is analytically calculated here. The mutator population undergoes deleterious mutations at constant, but at a much higher rate than that of the non-mutator. We find that antagonistic epistasis lowers the chances of mutation rate reduction, while synergistic epistasis enhances it. Below a critical value of epistasis, the fixation probability behaves non-monotonically with variation in mutation rate of the background population. Moreover, the variation of this critical value of the epistasis parameter with the strength of the mutator is discussed in the Appendix. For synergistic epistasis, when selection is varied, the fixation probability reduces overall, with damped oscillations.
A Study of the Comprehension of Equative Tautologies in Adults and Children
Creators: name: Wilkins, Zachary A.
Publisher: name: University of North Carolina at Chapel Hill Graduate School
Year: 2014
Subjects: subject: Linguistics
subject: FOS: Languages and literature
subject: Language and languages

description: The main objective of this paper is to examine the interpretation of so-called "equative tautologies" in adults and children. An experiment designed to assess the capacity of adults and children ages 7-9 to calculate implicature from tautologies is discussed. The prediction of the "Radical Semantic" account of tautologies (Wierzbicka 1987, Gibbs & McCarrell 1990) that human referent tautologies (e.g. "a plumber is a plumber") are easier to interpret than concrete referent tautologies (e.g. "a snack is a snack") was not confirmed by data from 23 adult subjects. Furthermore, the child data suggest that children do not interpret tautologies in an adult-like way. When presented with tautological statements, 7-year-olds tended to rely on their own preferences and knowledge of others' preferences rather than computing a conversational implicature as adults do, but this tendency decreased with age. Several explanations are provided to explain the poor performance of children compared to adults in the experiment, with suggestions for future work on the comprehension of tautologies.
ICEBOX
Creators: name: Ramos, Stephen
Publisher: name: FOOTPRINT
Year: 2018

description: At the intersection of logistics and migration, I focus on US for-profit immigrant detention centres as nodes within global capital flows. US Immigration and Customs Enforcement (ICE) detention centres process humans through transnational, encoded power systems, which couple tightly to the logics, infrastructure, and public-private strategies that comprise the international logistics industry. Migrants move from the country of origin to the US as itinerant labour, and as bodies to meet detention-centre quotas, forming patterns where chain migration is transformed into supply chain. The immigration detention system is an industrialisation of humans, and its administration processes are intersectoral and vertically integrated. I use the southeastern US logistics hub of Georgia, and its capital Atlanta, to illustrate the intersection of logistics and immigration detention systems. I demonstrate how the immigrant detention systems’ scale and its architecture – its spatial contours and manifestations – mirror those systems of international supply chain coordination, assembly, transport, and sale.
description: FOOTPRINT, Issue # 23 | Autumn / Winter 2018 | The Architecture of Logistics
Incremental and Parallel Machine Learning Algorithms with Automated Learning Rate Adjustments
Creators: name: Hishinuma, Kazuhiro
name: Iiduka, Hideaki
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: The existing machine learning algorithms for minimizing the convex function over a closed convex set suffer from slow convergence because their learning rates must be determined before running them. This paper proposes two machine learning algorithms incorporating the line search method, which automatically and algorithmically finds appropriate learning rates at run-time. One algorithm is based on the incremental subgradient algorithm, which sequentially and cyclically uses each of the parts of the objective function; the other is based on the parallel subgradient algorithm, which uses parts independently in parallel. These algorithms can be applied to constrained nonsmooth convex optimization problems appearing in tasks of learning support vector machines without adjusting the learning rates precisely. The proposed line search method can determine learning rates to satisfy weaker conditions than the ones used in the existing machine learning algorithms. This implies that the two algorithms are generalizations of the existing incremental and parallel subgradient algorithms for solving constrained nonsmooth convex optimization problems. We show that they generate sequences that converge to a solution of the constrained nonsmooth convex optimization problem under certain conditions. The main contribution of this paper is the provision of three kinds of experiment showing that the two algorithms can solve concrete experimental problems faster than the existing algorithms. First, we show that the proposed algorithms have performance advantages over the existing ones in solving a test problem. Second, we compare the proposed algorithms with a different algorithm Pegasos, which is designed to learn with a support vector machine efficiently, in terms of prediction accuracy, value of the objective function, and computational time. Finally, we use...
Colonial and Postcolonial Logistics
Creators: name: Scotto, Giulia
Publisher: name: FOOTPRINT
Year: 2018

description: This article addresses the logistical aspects of colonial and postcolonial governmental practices and the way in which such practices structured the African territory. In particular, it focuses on Zambia (Northern Rhodesia at time of British domination), a landlocked country located in the centre of Southern Africa, whose historical evolution, since it was conquered at the beginning of the twentieth century, is deeply intertwined with the discovery, extraction and export of copper and with the import of fossil fuel. In the first part, I introduce the concept of ‘colonial logistics’ intended as the modification and rationalisation of territories for military and political domination, and extraction and export of resources. In the second part of the article I show how, after independence, Zambia dealt with its complex geopolitical entanglement, partially inherited from colonial planning and partially generated by the end of direct forms of imperialism, which required the rerouting of its resources and the rebalancing of uneven territorial structures. The analysis of infrastructure development in postcolonial Zambia illustrates the competing strategies through which imperialist powers attempted to secure a new form of control on Africa and elucidates the role of logistics as a decisive tool to shape the African territory.
description: FOOTPRINT, Issue # 23 | Autumn / Winter 2018 | The Architecture of Logistics
Development of Aluminium-Based Lewis Acids as Catalysts for Organic Transformations
Creators: name: DISSANAYAKE, DISSANAYAKE MUDIYANSELAGE DEEPAMALI
Publisher: name: Monash University
Year: 2023
Subjects: Organometallic chemistry
Catalysis and mechanisms of reactions

description: The main focus of this thesis is to explore structural modifications of one of our published achiral aluminium based Lewis acid complexes in order to prepare a series of new chiral complexes. The ability of these complexes to catalyse challenging asymmetric organic transformations are then investigated. Further, attempts to widen the applications of the published achiral system to catalyse new, under-investigated organic reactions are also reported.
Twenty-four Hours at Work
Creators: name: Sgolacchia, Renzo
name: Retegan, Alex
Publisher: name: FOOTPRINT
Year: 2018

description: The deregulation policies implemented in the United States and the European Union in the early 1980s brought forth a significant rise in employment in the field of logistics but at the same contributed to a deterioration of work conditions in the industry – a paradoxical situation largely invisible to many in the age of online shopping. In recent years, a number of cinematographers showed interest in this type of work, depicting it in documentaries. Referring to one of these films, The Weight of Dreams (Francesco Mattuzzi, 2015), this review analyses the implications of the deregulation policies over work conditions, focusing on the relation between workers and space. As seen in the film, work in the field of logistics is a struggle between the desire for an efficient movement of goods and the desires of the humans who move the goods. This translates into an ambivalence of the space they use, which on the one hand, is planned for movement, but on the other, is appropriated by users with the illusion of a sedentary life.
description: FOOTPRINT, Issue # 23 | Autumn / Winter 2018 | The Architecture of Logistics
Josephson traveling-wave parametric amplifier with three-wave mixing
Creators: name: Zorin, A. B.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We develop a concept of the traveling-wave Josephson parametric amplifier exploiting quadratic nonlinearity of a serial array of one-junction SQUIDs embedded in a superconducting transmission line. The external magnetic flux applied to the SQUIDs makes it possible to efficiently control the shape of their current-phase relation and, hence, the balance between quadratic and cubic (Kerr-like) nonlinearities. This property allows us to operate in the favorable three-wave-mixing mode with minimal phase mismatch, an exponential dependence of the power gain on number of sections $N$, a large bandwidth, a high dynamic range, and substantially separated signal ($f_s$) and pump ($f_p$) frequencies obeying relation $f_s+f_i = f_p$, where $f_i$ is the idler frequency. An estimation of the amplifier characteristics with typical experimental parameters, a pump frequency of $12$ GHz, and $N = 300$ yields a flat gain of 20 dB in the bandwidth of 5.6 GHz.
Between Delft and Stockholm
Creators: name: Burroughs, Brady
name: Bonnevier, Katatrina
name: Frichot, Hélène
name: Grillner, Katja
Publisher: name: FOOTPRINT
Year: 2017

description: Over the years, colleagues at the Architecture School of Stockholm have developed a most remarkable and inspiring approach to architecture and writing in terms of performances and the performative while integrating feminist and queer theory. Of particular interest are the Critical Studies in Architecture group, the group Fatale for feminist architecture theory and practice, and the Mycket collaboration. By way of an interview between Footprint editors Dirk van den Heuvel and Robert Gorny, and the Stockholm colleagues Brady Burroughs, Katarina Bonnevier, Katja Grillner, and Hélène Frichot questions of pedagogy, research and methodology are further investigated, how to ‘stay with the trouble’ and where to situate newly emerging knowledge models.
description: FOOTPRINT, Issue # 21 | Autumn / Winter 2017 | Trans-Bodies / Queering Spaces
Effects of an Acute Bout of Resistance Training on Leukocyte and Leukocyte Subset Response in Breast Cancer Survivors
Creators: name: Graff, Rachel Marissa
Publisher: name: University of North Carolina at Chapel Hill
Year: 2013

description: The purpose of this study was to examine the immune response to a single bout of moderate-intensity resistance training in breast cancer survivors (BCS). BCS (n=4) and healthy controls (n=8) completed an exercise session consisting of 3 sets of 10 repetitions at 70% of one repetition-maximum on leg press, lateral pull down, leg extension, and seated row performed in a circuit fashion. Blood samples taken at baseline, immediately post (0h post), 2-hours post (2h post), and 24-hours post (24h post) exercise were assessed for total leukocyte, granulocyte, lymphocyte, and monocyte cell counts. Percent change (%Δ) scores from baseline-0h post, baseline-2h post, and baseline-24h post were compared using mixed-model ANOVAs between groups and indicated that there were no significant differences between total leukocytes (p=0.560), granulocytes (p=0.239), lymphocytes (p=0.257), or monocytes (p=0.721) at any point. Results suggest BCS and controls exhibit similar immune responses to an acute bout of resistance training.
title: FOOTPRINT, Issue # 23 | Autumn / Winter 2018 | The Architecture of Logistics
title: Issue # 23 | Autumn / Winter 2018 | The Architecture of Logistics
titleType: AlternativeTitle
Creators: name: FOOTPRINT
Publisher: name: FOOTPRINT
Year: 2018

description: The ambition of Footprint 23 is to provide a critical survey of the architecture of logistics, unfolding the multivalences of its apparatus, dissecting its buildings and spaces, its technologies and labour relations, its historical evolutions as well as its future projections. Gathering academic papers and visual essays from researchers and emerging scholars in the field, the issue follows three main directions of inquiry. The first trajectory attempts to define what logistics is and how it operates, focusing on the inherent ambivalence of its apparatus, able to cope with different scales and various temporal dimensions – from barcodes and gadgets to global routes and territorial infrastructures – constituting both a physical and abstract framework supporting, measuring and quantifying movements and actions, thoughts and desires. The second trajectory investigates the way logistics penetrates our existences, not simply by affecting how we live and work but the way in which it provides the very possibility of life as such, or, in other words, how logistics is inherently political. The third trajectory tackles the past, present and future of logistics, considered as the most crucial apparatus determining the human impact on the earth, controlling the distribution and organisation of organisms and ecosystems, triggering new and more violent forms of colonisation and exploitation. This issue of Footprint does not seek definitive statements or hypothetic solutions for the monstrous nature of logistics. On the opposite, it aims at unfolding its inner contradictions to propose new possibilities of exploration for an architecture and its project. Issue's editors: Negar Sanaan Bensi and Francesco Marullo
description: The Architecture of Logistics...1-6 The Other California...115-124 New Interfaces in the Automated Landscapes of Logistics...105-114 Territories of Equivalence...25-36 The Zone in Reverse...25-36 Ambiguous Territory...147-160 Twenty-four Hours at Work...125-130 Colonial and Postcolonial Logistics...69-86 The Floor is not the Ground...7-24 ICEBOX...53-68 Blankness...87-104 HomeWorks...131-146
HomeWorks
Creators: name: Tavone, Marcello
Publisher: name: FOOTPRINT
Year: 2018

description: What if the city of the twenty-first century was not as we have imagined it? What if the culture of congestion was swept away by an isotropic, weak and diffused urban reality; by the culture of dispersion? A nebulous and potentially limitless city freed from any physical and symbolic centre, where uncertain attempts of urbanity overlap with the idealised landscape of the countryside. From this perspective, the central area of the Veneto region in Italy can still be considered a laboratory that produces urban and architectural forms for the contemporary city. The Veneto territory is here considered as a palimpsest, as the product of a slow and incessant process of accumulation of traces, elements, attempts, which have been overlapping throughout centuries. This article presents only a few of the layers that compose the image of this region; they serve as evidence in the investigation of the role that anthropisation processes have played in the continuous modification of the landscape. Within this frame, the ‘architecture of logistics’ is presented as one of the elements that have imposed a pervasive economic-political control of the territory, to the point of producing specific forms of living.
description: FOOTPRINT, Issue # 23 | Autumn / Winter 2018 | The Architecture of Logistics
Cylindrical continuous martingales and stochastic integration in infinite dimensions
Creators: name: Veraar, Mark
name: Yaroslavtsev, Ivan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Probability (math.PR)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 60H05 (Primary), 60B11, 60G44, 47D06 (Secondary)

description: In this paper we define a new type of quadratic variation for cylindrical continuous local martingales on an infinite dimensional spaces. It is shown that a large class of cylindrical continuous local martingales has such a quadratic variation. For this new class of cylindrical continuous local martingales we develop a stochastic integration theory for operator valued processes under the condition that the range space is a UMD Banach space. We obtain two-sided estimates for the stochastic integral in terms of the $γ$-norm. In the scalar or Hilbert case this reduces to the Burkholder-Davis-Gundy inequalities. An application to a class of stochastic evolution equations is given at the end of the paper.
description: Minor revision. Accepted for publication in Electronic Journal of Probability
Stirred, not Clumped: Evolution of Temperature Profiles in the Outskirts of Galaxy Clusters
Creators: name: Avestruz, Camille
name: Nagai, Daisuke
name: Lau, Erwin T.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Recent statistical X-ray measurements of the intracluster medium (ICM) indicate that gas temperature profiles in the outskirts of galaxy clusters deviate from self-similar evolution. Using a mass-limited sample of galaxy clusters from cosmological hydrodynamical simulations, we show that the departure from self-similarity can be explained by non-thermal gas motions driven by mergers and accretion. Contrary to previous claims, gaseous substructures only play a minor role in the temperature evolution in cluster outskirts. A careful choice of halo overdensity definition in self-similar scaling mitigates these departures. Our work highlights the importance of non-thermal gas motions in ICM evolution and the use of galaxy clusters as cosmological probes.
description: 8 pages, 8 figures