cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Working Paper 7: Food and urban politics in Belo Horizonte
Creators: name: Goez, Nicolas
Publisher: name: Food for Justice Working Paper Series
Year: 2023

description: In this Working Paper, I aim to contribute to the emerging debate between food and urban studies by bringing to the fore the socio-political dimension of the food system and its urban context. Guided by the general research questions of the project “Food for Justice: Power, Politics, and Food Inequalities in a Bioeconomy”1, this research is embedded in a case study on food politics in the city of Belo Horizonte. It deals with the social innovations of the agroecological and housing movements of the city and the dwellers of Izidora, inhabitants of a so-called “informal settlement”, whose engagement in the fight for housing and the right to the city has yielded remarkable achievements in building activist coalitions and re-signifying marginal urban spaces. Drawing on digital-ethnographic fieldwork I conducted between January and December 2020, I analyze the context, use, and reach of these social innovations as an instrument to transform urban development in the peripheries of Belo Horizonte. 1 (i) What are the main justice claims against inequalities in the food system that mobilize citizens and consumers in different world regions? (ii) Which social innovations emerged from those concerns? (iii) How can successful social innovations influence public policies?
description: Food for Justice Working Paper Series, Vol. 7 (2023)
Biomimetic bluff body drag reduction by self-adaptive porous flaps
Creators: name: Mazellier, Nicolas
name: Feuvrier, Audrey
name: Kourta, Azeddine
Publisher: name: arXiv
Year: 2011
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The performances of an original passive control system based on a biomimetic approach are assessed by investigating the flow over a bluff-body. This control device consists in a couple of flaps made from the combination of a rigid plastic skeleton coated with a porous fabric mimicking the shaft and the vane of the bird's feathers, respectively. The sides of a square cylinder have been fitted with this system so as to enable the flaps to freely rotate around their leading edge. This feature allows the movable flaps to self-adapt to the flow conditions. Comparing both the uncontrolled and the controlled flow, a significant drag reduction (up to 22%) has been obtained over a broad range of Reynolds number. The investigation of the mean flow reveals a noticeable modification of the flow topology at large scale in the vicinity of the controlled cylinder accounting for the increase of the pressure base in comparison with the natural flow. Meanwhile, the study of the relative motion of both flaps points out that their dynamics is sensitive to the Reynolds number. Furthermore, the comparative study of the flow dynamics at large scale suggest a lock-in coupling of the flap motion and the vortex shedding.
description: 19 pages, 17 figures, submitted to Comptes-Rendus de l' Acad\'emie des Sciences (M\'ecanique)
Αναπαράγοντας την κουλτούρα της επιτήρησης και της ιδρυματοποίησης: η περίπτωση ενός οικοτροφείου κωφών
Creators: name: Παππά, Νικολέτα Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Οικοτροφείο
Κωφοί
Ίδρυμα
Boarding school
Deaf
Institution

description: Σκοπός της διατριβής ήταν η μελέτη των οικοτροφείων κωφών. Συγκεκριμένα, εξετάστηκε η περίπτωση ενός οικοτροφείου κωφών της Βόρειας Ελλάδας, μέσα από τη σχετική νομοθεσία, αλλά και από πρωτογενή δεδομένα. Τα πρωτογενή δεδομένα συγκεντρώθηκαν με ημιδομημένες συνεντεύξεις πρώην οικότροφων και μίας επιμελήτριας, του συγκεκριμένου οικοτροφείου. Ακολούθησε η θεματική ανάλυση των δεδομένων των πρώην οικότροφων και η κωδικοποίηση των δεδομένων της επιμελήτριας. Κατά το σχολιασμό αυτών έγινε σύνδεση των δεδομένων με βιβλιογραφικές πηγές, που σχετίζονται με ιδρύματα, με οικοτροφεία και με οικοτροφεία κωφών. Από τα δεδομένα της έρευνας προέκυψε η αυστηρότητα του προγράμματος σε κλειστές δομές, καθώς και στοιχεία επιτήρησης. Τέλος, έγινε προσπάθεια σύγκρισης του οικοτροφείου με τα ιδρύματα, ώστε να εντοπιστούν ομοιότητες και διαφορές και έτσι να αναδειχθεί η σημασία του χώρου, ως στοιχείο επιτήρησης.
description: The aim of the present thesis was the study of boarding schools for the deaf. Specifically, the case of a boarding school for the deaf in Northern Greece was examined, through the relevant legislation, but also through primary data. The primary data were collected through semi-structured interviews of former boarding school students and a female supervisor of the specific boarding school. This was followed by the thematic analysis of the data of the former boarders and the coding of the supervisor's data. When commenting on these, the data was linked to bibliographic sources, related to institutions, boarding schools and boarding schools for the deaf. From the research data emerged the strictness of the program in closed structures, as well as elements of surveillance. Finally, an attempt was made to compare the boarding school with the institutions, in order to identify similarities and differences and thus highlight the importance of space, as an element of surveillance.
Fast numerical test of hyperbolic chaos
Creators: name: Kuptsov, Pavel V.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The effective numerical method is developed performing the test of the hyperbolicity of chaotic dynamics. The method employs ideas of algorithms for covariant Lyapunov vectors but avoids their explicit computation. The outcome is a distribution of a characteristic value which is bounded within the unit interval and whose zero indicate the presence of tangency between expanding and contracting subspaces. To perform the test one needs to solve several copies of equations for infinitesimal perturbations whose amount is equal to the sum of numbers of positive and zero Lyapunov exponents. Since for high-dimensional system this amount is normally much less then the full phase space dimension, this method provide the fast and memory saving way for numerical hyperbolicity test of such systems.
description: 4 pages and 4 figures
Διερεύνηση του βαθμού υιοθέτησης των διεθνών διατροφικών συστάσεων γυναικών κατά την κύηση
Creators: name: Παρμαξίδου, Ευαγγελία Ελευθέριου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Διαιτητικές συστάσεις
Εγκυμοσύνη
Σωματική δραστηριότητα
Dietary recommendations
Pregnancy
Physical activity

description: Ο κρίσιμος ρόλος του τρόπους ζωής και των διατροφικών συνηθειών στην ανθρώπινη υγεία και ευημερία και ειδικότερα σε ορισμένες φάσεις της ζωής όπως η περίοδος της εγκυμοσύνης, εντείνει το ερευνητικό ενδιαφέρον και δημιουργεί την ανάγκη για περαιτέρω αναζήτηση τρόπων ενημέρωσης και υποστήριξης τόσο των γυναικών όσο και των επαγγελματιών υγείας. Σκοπός της παρούσας εργασίας είναι να διερευνήσει το βαθμό στον οποίο γυναίκες που κατοικούν στην Ελλάδα και βρίσκονται σε κατάσταση εγκυμοσύνης διατρέφονται σύμφωνα με τις συστάσεις των διεθνών επιστημονικών φορέων και οργανισμών αναφορικά με την ενεργειακή πρόσληψη, τις προσλήψεις μακροθρεπτικών και μικροθρεπτικών συστατικών και τις συστάσεις για σωματική δραστηριότητα. Επιπλέον, μέσα από την παρούσα μελέτη πραγματοποιήθηκε μία προσπάθεια εντοπισμού περιστατικών αλλοτριοφαγίας κατά την κύηση.
description: The crucial role of lifestyle and nutrition habits in human health and well-being, especially in certain phases of life such as pregnancy, has intensified research interest and creates the need to explore ways to inform and support both women and health professionals. This study aims to investigate the extent to which pregnant women living in Greece meet the dietary recommendations of International scientific organizations regarding energy intakes, macronutrient and micronutrient intakes and physical activity recommendations. Furthermore, an attempt to identify cases of PICA disorder during pregnancy was made through the present study.
Attitudes and knowledge as factors in job satisfaction in dementia caregivers
Creators: name: Liebzeit, Maria Jolanta
Publisher: name: Graduate Studies
Year: 2002
Subjects: subject: AC1 .T484 2002 L544
subject: Nursing homes - Employees - Attitudes
subject: Dementia - Patients - Care
subject: Caregivers - Attitudes

description: Bibliography: p. 56-63
Symmetries and security of a quantum-public-key encryption based on single-qubit rotations
Creators: name: Seyfarth, U.
name: Nikolopoulos, G. M.
name: Alber, G.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Exploring the symmetries underlying a previously proposed encryption scheme which relies on single-qubit rotations, we derive an improved upper bound on the maximum information that an eavesdropper might extract from all the available copies of the public key. Subsequently, the robustness of the scheme is investigated in the context of attacks that address each public-key qubit independently. The attacks under consideration make use of projective measurements on single qubits and their efficiency is compared to attacks that address many qubits collectively and require complicated quantum operations.
description: 11 pages, 5 figures. To be published in Phys. Rev. A
Safeguarding the digital single market's e-commerce ecosystem - ENSURESEC develops an automatic, rigorous, distributed and open-source toolkit
Creators: name: Neitzert, Julian
name: Rademacher, Rebecca
name: Sousa, Luís Júdice
Publisher: name: Zenodo
Year: 2021
Subjects: e-commerce
cyber security
H2020
Awareness
cyber threats

description: The consortium of 22 partners from 14 European countries is working together on a comprehensive security toolkit for e-commerce platforms that offers both suppliers and end customers effective protection for their data and products. This way, the project aims to contribute to the European vision of a reliable and trusted Digital Single Market.
Zwischen Welt- Und Kultursicherung. Erkenntnis Und Sozialität Vor Dem Hintergrund Kritischer Mythentheorien Bei Adorno, Horkheimer Und Baudrillard
Creators: name: Runge, Maximilian
Publisher: name: Zenodo
Year: 2015
Subjects: Max Horkheimer
Theodor W. Adorno
Theodor Adorno
Jean Baudrillard
Critical Theory
sociology
religion
mythology
myth
philosophy
metaphysics
identity
culture
death
capitalism
nationalsocialism
fascism
magic
postmodernism
Enlightenment
poststructuralism
Hans Blumenberg
existence
Existentialism
Frankfurt School

description: In this thesis I try to evaluate the risks and potentials of modern and archaic myths for human existence in a holistical approach. After Adorno's and Horkheimer's critique that enlightment would still be mythical the positive aspects of myth and ancient religion were - with a few exceptions (i.g. Blumenberg, Eliade) - mostly neglected: In the analysis of Critical Theory myth only serves power, its misuse in fashist and capitalistic societies is inevitable; therefore any hint of mythological structures needs to be destroyed. Even so, myth as one of the first tools of sensemaking had made sure that humanity clings to life through entire history. In the words of Baudrillard and Blumenberg, mythical (and, further on, religious and rationalistic) icons preserves their followers to get in touch with an overwhelming reality. The mythical tills the world as an factual entity and, in the cultural aspect, as an entity shapeable by "our" collective power. With the evidence given of increasing difficulties for finding "Bedeutsamkeit" (Blumenberg) in individual life, the bivalency of myth illustrates a promising oppurtunity for individual and existential sensemaking.
Addressing age-related pen-based target acquisition difficulties
Creators: name: Moffatt, Karyn Anne
Publisher: name: University of British Columbia
Year: 2010

description: Technology is increasingly being promoted as a means of addressing age-related cognitive and sensory impairments and enabling seniors to live more independently. Pen-based devices such as Personal Digital Assistants and Tablet PCs are appealing platforms for these endeavors because they are small, mobile, and powerful. Relative to the mouse, pen-based devices have been shown to be particularly beneficial for older adults. However, in terms of garnering wide-spread adoption, the mouse has historically dominated, leading researchers to focus chiefly on identifying and addressing its age- and motor-related limitations. In contrast, pen-based limitations for older users have been relatively unexplored. This thesis begins to fill that gap in the literature. Our first experiment, an empirical evaluation of pen-based target acquisition across the adult lifespan, identified three main sources of pen-based target acquisition difficulty—missing-just-below, slipping, and drifting—and demonstrated how these difficulties vary across task situation and age. In addition, this work showed that including older adults as participants can help uncover general pen-interaction problems: the missing-just-below and drifting difficulties were evident in both younger and older users alike. We next developed seven new target acquisition techniques to improve pen-based interaction, specifically addressing the three difficulties identified, and particularly targeting older adults. Our techniques built upon existing mouse-based techniques developed for older users and pen techniques for younger users. In total, we conducted three experiments to evaluate the seven new pen-based techniques: Reassigned and Deactivated (for missing-just-below), Tap and Glide (for drifting), and Steady, Bubble, and Steadied-Bubble (for slipping). Through these evaluations, we established where our proposed designs were successful at reducing errors, and where further refinement is needed. Finally, we reflected on our findings across studies to identify age-related, contextual, and technological factors which contributed to our results. These factors help illuminate the underlying reasons for pen-based targeting difficulties and shed light onto areas still needing attention. Overall, the results of this research support our main thesis that the accessibility of pen-based interfaces can be improved for older adults by first examining the sources of age-related acquisition difficulty, and then using the results of this examination to develop improved techniques.
Unitarity, real-intermediate states, and fixed-order approach to resonant dark matter annihilation
Creators: name: Maták, Peter
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the role of perturbative unitarity in the resonant annihilation of two dark matter particles into the standard model bath. Systematically including all kinematically allowed holomorphic cuts of the corresponding forward-scattering diagram, cancelation of the singularities occurs, resulting in a fixed-order correction to the narrow-width approximation for the annihilation cross section. Unlike the standard approach based on including the finite width of the mediator, no double counting of intermediate states occurs.
description: Accepted for publication in Physical Review D
Multicriteria Logistics - A quantitative approach using AHP
Creators: name: Πετρογιαννάκη, Μερόπη Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Μέθοδος AHP
Εξωτερική ανάθεση
Εφοδιαστική
AHP method
Outsourcing
Logistics

description: The purpose of this paper is the presentation of hierarchical decision analysis through the AHP method. Via literature review 3PL/4PL providers are described along with the advantages and disadvantages of them. The selection of an external partner of a company is a decision of vital importance for every company since it affects its sustainability and profitability. Consequently, this decision is of a significant level of difficulty. The case study of an anonymous meat processing and distribution company follows below. In this case, after the interview with the Certification Manager of the company, the criteria of selection of external partners were determined and rated. Then, the AHP method is applied to the data of the company and the final optimal decision is made among 3 candidates.
description: Σκοπός αυτής της εργασίας είναι η παρουσίαση της ιεραρχικής ανάλυσης αποφάσεων μέσω της μεθόδου ΑΗΡ. Μέσω της βιβλιογραφικής ανασκόπησης περιγράφονται οι 3PL / 4PL πάροχοι όπως και τα πλεονεκτήματα/μειονεκτήματα αυτών. Καθώς η επιλογή των εξωτερικών συνεργατών μιας εταιρείας είναι μιας ζωτικής σημασίας απόφαση για κάθε εταιρεία, αφού επηρεάζει την βιωσιμότητα και την κερδοφορία της, η τελική επιλογή εξωτερικού συνεργάτη αποτελεί μια εξαιρετικά δύσκολη απόφαση. Ακολουθεί η μελέτη περίπτωσης μιας ανώνυμης εταιρείας επεξεργασίας και εμπορίας κρέατος όπου πραγματοποιήθηκε επικοινωνία με τον υπεύθυνο ποιότητας της εταιρείας, καθορίστηκαν και βαθμολογήθηκαν τα κριτήρια επιλογής εξωτερικών συνεργατών. Έπειτα εφαρμόζεται η μέθοδος ΑΗΡ στα δεδομένα της εταιρείας και βρίσκεται η τελική βέλτιστη απόφαση μεταξύ των υποψηφίων.
What are universal features of gravitating Q-balls?
Creators: name: Tamaki, Takashi
name: Sakai, Nobuyuki
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate how gravity affects Q-balls by exemplifying the case of the Affleck-Dine potential $V(ϕ):=m^4 \ln (1+\frac{ϕ^2}{m^2})$. Surprisingly, stable Q-balls with arbitrarily small charge exist, no matter how weak gravity is, contrary to the case of flat spacetime. We also show analytically that this feature holds true for general models as long as the leading order term of the potential is a positive mass term in its Maclaurin series.
description: 8 pages, 10 figures, to appear in PRD
CP Violation in τ->νπK_S and D->πK_S: The Importance of K_S-K_L Interference
Creators: name: Grossman, Yuval
name: Nir, Yosef
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The $B$-factories have measured CP asymmetries in the $τ\toπK_Sν$ and $D\to K_Sπ$ modes. The $K_S$ state is identified by its decay to two pions at a time that is close to the $K_S$ lifetime. Within the Standard Model and many of its extensions, the asymmetries in these modes come from CP violation in $K^0-\bar{K}^0$ mixing. We emphasize that the interference between the amplitudes of intermediate $K_S$ and $K_L$ is as important as the pure $K_S$ amplitude. Consequently, the measured asymmetries depend on the times over which the relevant decay rates are integrated and on features of the experiment.
description: 4 pages, 4 figures
Integrated Ray-Tracing and Coverage Planning Control using Reinforcement Learning
Creators: name: Papaioannou, Savvas
name: Kolios, Panayiotis
name: Theocharides, Theocharis
name: Panayiotou, Christos G.
name: Polycarpou, Marios M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Robotics (cs.RO)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In this work we propose a coverage planning control approach which allows a mobile agent, equipped with a controllable sensor (i.e., a camera) with limited sensing domain (i.e., finite sensing range and angle of view), to cover the surface area of an object of interest. The proposed approach integrates ray-tracing into the coverage planning process, thus allowing the agent to identify which parts of the scene are visible at any point in time. The problem of integrated ray-tracing and coverage planning control is first formulated as a constrained optimal control problem (OCP), which aims at determining the agent's optimal control inputs over a finite planning horizon, that minimize the coverage time. Efficiently solving the resulting OCP is however very challenging due to non-convex and non-linear visibility constraints. To overcome this limitation, the problem is converted into a Markov decision process (MDP) which is then solved using reinforcement learning. In particular, we show that a controller which follows an optimal control law can be learned using off-policy temporal-difference control (i.e., Q-learning). Extensive numerical experiments demonstrate the effectiveness of the proposed approach for various configurations of the agent and the object of interest.
description: 2022 IEEE 61st Conference on Decision and Control (CDC), 06-09 December 2022, Cancun, Mexico
Long-term Retention of Small, Volatile Molecular Species within Metallic Microcapsules
Creators: name: Hitchcock, James Paul
Publisher: name: University of Leeds
Year: 2015

description: The efficient encapsulation of active ingredients within formulated products and their controlled, targeted delivery to the sites of action, is very important to a range of industries such as pharmaceuticals, agrochemicals, home and personal care and cosmetics to name but a few. By successfully stopping the release of active chemicals and triggering their release where and when they are needed, product efficiency can be improved which reduces the required dose, lowering costs, environmental impact and/or side effects. Such active chemicals include pharmaceutical drugs, pesticides, fragrant and flavour oils, enzymes, vitamins. Encapsulation and full retention of small molecular weight actives is a particularly challenging task that remains unsolved by current technologies used in industry and academia. In particular, certain everyday product formulations provide difficult environments in which preventing active leakage through capsule walls is not feasible. For example, a continuous phase that can fully dissolve an encapsulated active will typically force full release over a fraction of the intended lifetime of a product. This is due to the inherent porosity of polymeric membranes typically used as capsule wall materials in current technologies. In this work, a method for preventing undesired loss of encapsulated actives under these extreme conditions using a simple three step process is developed. The developed methodology forms an impermeable metal film around polymer microcapsules, prevents loss of small, volatile oils within an ethanol continuous phase for at least 21 days while polymeric capsules lose their entire content in less than 30 min under the same conditions. Polymer shell−oil core microcapsules are produced using a well known cosolvent extraction method to precipitate a polymeric shell around the oil core. Subsequently, metallic catalytic nanoparticles are physically adsorbed onto the microcapsule polymeric shells. Finally, this nanoparticle coating is used to catalyse the growth of a secondary metallic film. Specifically, this work shows that it is possible to coat polymeric microcapsules containing a model oil system or typical fragrance oil with a continuous metal shell. It also shows that the coverage of nanoparticles on the capsule surface can be controlled, which is paramount for obtaining a continuous impermeable metal film. In addition, control over the metal shell thickness is demonstrated without altering the capability of the metal film to retain the encapsulated oils. In addition, a method to grow a continuous, non-porous metallic film directly onto nanoparticle stabilised Pickering emulsion droplets is demonstrated, negating the need for an underlying polymeric shell.
Mixed Nonlinear Response and Transition of Nonlinearity in a Piezoelectric Membrane
Creators: name: Arora, Nishta
name: Singh, Priyanka
name: Kumar, Randhir
name: Pratap, Rudra
name: Naik, Akshay
Publisher: name: arXiv
Year: 2023
Subjects: subject: Applied Physics (physics.app-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: Nonlinearities play a critical role in the dynamics of mechanical resonators, enhancing sensitivity and enabling signal manipulation. Understanding the parameters affecting nonlinearities is crucial for developing strategies to counteract their effects or manipulate them for improved device performance. This study investigates the impact of fabrication-induced curvature on the dynamics of zinc oxide-based piezoelectric micromachined ultrasonic transducers (PMUTs). Our experiments reveal that these devices exhibit hardening, softening, and mixed nonlinear responses, with varying initial static displacements. Notably, PMUTs with almost flat initial static displacement exhibit hardening nonlinearity, while those with a curved initial static displacement show softening nonlinearity. An exotic mixed nonlinear response is observed for intermediate static displacement. We attribute the observed nonlinear response to the interplay between static displacement-induced quadratic nonlinearity and midplane stretching-induced cubic nonlinearity. We provide a theoretical formulation for the dynamics of the devices, which explains the experimental results and highlights the nonlinear responses and their dependence on the initial static displacement. Our findings underscore the significance of nonlinearities in the dynamics of mechanical resonators and suggest ways to optimize device performance.
description: 19 pages, 7 figures
On horizon structure of bimetric spacetimes
Creators: name: Deffayet, Cédric
name: Jacobson, Ted
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss the structure of horizons in spacetimes with two metrics, with applications to the Vainshtein mechanism and other examples. We show, without using the field equations, that if the two metrics are static, spherically symmetric, nonsingular, and diagonal in a common coordinate system, then a Killing horizon for one must also be a Killing horizon for the other. We then generalize this result to the axisymmetric case. We also show that the surface gravities must agree if the bifurcation surface in one spacetime lies smoothly in the interior of the spacetime of the other metric. These results imply for example that the Vainshtein mechanism of nonlinear massive gravity theories cannot work to recover black holes if the dynamical metric and the non dynamical flat metric are both diagonal. They also explain the global structure of some known solutions of bigravity theories with one diagonal and one nondiagonal metric, in which the bifurcation surface of the Killing field lies in the interior of one spacetime and on the conformal boundary of the other.
description: 9 pages
Characterization of Somatically-Eliminated Genes During Development of the Sea Lamprey (Petromyzon marinus)
Creators: name: Bryant, Stephanie A.
Publisher: name: University of Kentucky
Year: 2016
Subjects: subject: Biology
subject: Computational Biology
subject: Developmental Biology
subject: Genomics

description: The sea lamprey (Petromyzon marinus) undergoes programmed genome rearrangements (PGRs) during early development that facilitate the elimination of ~20% of the genome from the somatic cell lineage, resulting in distinct somatic and germline genomes. To improve our understanding of the evolutionary/developmental logic of PGR, we generated computational predictions to identify candidate germline-specific genes within a transcriptomic dataset derived from adult germline and the embryonic stages encompassing PGR. Validation studies identified 44 germline-specific genes and characterized patterns of transcription and DNA loss during early embryogenesis. Expression analyses reveal that several of these genes are differentially expressed during early embryogenesis and presumably function in early development of the germline. Ontology analyses indicate that many of these genes play known roles in germline development, pluripotency, and oncogenesis (when misexpressed). These studies provide support for the theory that PGR serves to segregate molecular functions related to germline development/pluripotency in order to prevent their potential misexpression in somatic cells. This larger set of eliminated genes also allows us to extend the evolutionary/developmental breadth of this theory, as some deleted genes (or their gnathostome homologs) appear to be associated with the early development of somatic lineages, perhaps through the evolution of novel functions within gnathostome lineages.
Taking Public Responsibility for Gender: When Personal Identity and Institutional Feminist Politics Meet
Creators: name: Cooper, Davina
Publisher: name: feminists@law
Year: 2020

description: This essay explores the challenge that soft decertification poses for feminist politics. In soft decertification, people continue to have a formal legal sex/ gender status; however, public and other bodies act as if such status was no longer determinative (at least in certain contexts). As glimpses of soft decertification emerge, what are its implications for gender equality initiatives hitherto focused on addressing the asymmetrically patterned lives of women and men? What new ways of understanding gender are coming to the fore, and what challenges arise for bodies engaged in equality governance in trying to address them? This essay explores these questions through the prism of responsibility - the ethical, political, and legal obligation to pay attention or respond that different bodies have because of their capacity to undo or ameliorate social inequalities and other injustices. Specifically, it asks: What does responsibility for gender entail when gender is treated as both institutionalised and self-determined; public and private? The essay addresses two contexts where equality governance approaches gender as a site of institutional re-making and redress. The first concerns the front-stage initiatives and policies of public sector provision; the second concerns the back-stage scenes of organisational action, where informal decision-making arises. In both cases, taking responsibility for gender, as an institution, is far from straight-forward. This essay explores the importance of doing so - not just despite, but because of, the complex conditions responsibility confronts when institutional forms also exist as individual attachments.
description: feminists@law, Vol 10 No 2 (2020)
Interactive Bayesian optimization : learning user preferences for graphics and animation
Creators: name: Brochu, Eric
Publisher: name: University of British Columbia
Year: 2011

description: Bayesian optimization with Gaussian processes has become increasingly popular in the machine learning community. It is efficient and can be used when very little is known about the objective function, making it useful for optimizing expensive black box functions. We examine the case of using Bayesian optimization when the objective function requires feedback from a human. We call this class of problems \emph{interactive} Bayesian optimization. Here, we assume a parameterized model, and a user whose task is to find an acceptable set of parameters according to some perceptual value function that cannot easily be articulated. This requires special attention to the qualities that make this a unique problem, and so, we introduce three novel extensions: the application of Bayesian optimization to "preference galleries", where human feedback is in the form of preferences over a set of instances; a particle-filter method for learning the distribution of model hyperparameters over heterogeneous users and tasks; and a bandit-based method of using a portfolio of utility functions to select sample points. Using a variety of test functions, we validate our extensions empirically on both low- and high-dimensional objective functions. We also present graphics and animation applications that use interactive Bayesian optimization techniques to help artists find parameters on difficult problems. We show that even with minimal domain knowledge, an interface using interactive Bayesian optimization is much more efficient and effective than traditional "parameter twiddling" techniques on the same problem.
Analytic proof of partial conservation of seniority in $j=9/2$ shells
Creators: name: Qi, Chong
name: Xu, Z. X.
name: Liotta, R. J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A partial conservation of the seniority quantum number in $j=9/2$ shells has been found recently in a numerical application. In this paper a complete analytic proof for this problem is derived as an extension of the work by Zamick and P. Van Isacker [Phys. Rev. C 78 (2008) 044327]. We analyze the properties of the non-diagonal matrix elements with the help of the one-particle and two-particle coefficients of fractional parentage (cfp's). It is found that all non-diagonal (and the relevant diagonal) matrix elements can be re-expressed in simple ways and are proportional to certain one-particle cfp's. This remarkable occurrence of partial dynamic symmetry is the consequence of the peculiar property of the $j=9/2$ shell, where all $v=3$ and 5 states are uniquely defined.
description: 17 pages
Fabrication D'Un Aliment De Complement A Partir De Produits Locaux Pour Enfants De 06 A 36 Mois
Creators: name: Mengue Ango, Nelly Flora
Publisher: name: Zenodo
Year: 2016
Subjects: farine infantile
aliment de complément
teneurs en nutriments
valeur énergétique
qualité microbiologique

description: Mémoire de fin d’études en vue de l’obtention du Diplôme de Professeur d’Enseignement Technique de Deuxième Grade
Imaging the dynamics of cardiac fiber orientation in vivo using 3D Ultrasound Backscatter Tensor Imaging
Creators: name: Papadacci, Clement
name: Finel, Victor
name: Provost, Jean
name: Villemain, Olivier
name: Bruneval, Patrick
name: Gennisson, Jean-Luc
name: Tanter, Mickael
name: Fink, Mathias
name: Pernot, Mathieu
Publisher: name: arXiv
Year: 2023
Subjects: subject: Medical Physics (physics.med-ph)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: The assessment of myocardial fiber disarray is of major interest for the study of the progression of myocardial disease. However, time-resolved imaging of the myocardial structure remains unavailable in clinical practice. In this study, we introduce 3D Backscatter Tensor Imaging (3D-BTI), an entirely novel ultrasound-based imaging technique that can map the myocardial fibers orientation and its dynamics with a temporal resolution of 10 ms during a single cardiac cycle, non-invasively and in vivo in entire volumes. 3D-BTI is based on ultrafast volumetric ultrasound acquisitions, which are used to quantify the spatial coherence of backscattered echoes at each point of the volume. The capability of 3D-BTI to map the fibers orientation was evaluated in vitro in 5 myocardial samples. The helicoidal transmural variation of fiber angles was in good agreement with the one obtained by histological analysis. 3D-BTI was then performed to map the fiber orientation dynamics in vivo in the beating heart of an open-chest sheep at a volume rate of 90 volumes/s. Finally, the clinical feasibility of 3D-BTI was shown on a healthy volunteer. These initial results indicate that 3D-BTI could become a fully non-invasive technique to assess myocardial disarray at the bedside of patients.
Exploring Large-Scale Entanglement in Quantum Simulation
Creators: name: Joshi, Manoj K.
name: Kokail, Christian
name: van Bijnen, Rick
name: Kranzl, Florian
name: Zache, Torsten V.
name: Blatt, Rainer
name: Roos, Christian F.
name: Zoller, Peter
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Entanglement is a distinguishing feature of quantum many-body systems, and uncovering the entanglement structure for large particle numbers in quantum simulation experiments is a fundamental challenge in quantum information science. Here we perform experimental investigations of entanglement based on the entanglement Hamiltonian, as an effective description of the reduced density operator for large subsystems. We prepare ground and excited states of a 1D XXZ Heisenberg chain on a 51-ion programmable quantum simulator and perform sample-efficient `learning' of the entanglement Hamiltonian for subsystems of up to 20 lattice sites. Our experiments provide compelling evidence for a local structure of the entanglement Hamiltonian. This observation marks the first instance of confirming the fundamental predictions of quantum field theory by Bisognano and Wichmann, adapted to lattice models that represent correlated quantum matter. The reduced state takes the form of a Gibbs ensemble, with a spatially-varying temperature profile as a signature of entanglement. Our results also show the transition from area to volume-law scaling of Von Neumann entanglement entropies from ground to excited states. As we venture towards achieving quantum advantage, we anticipate that our findings and methods have wide-ranging applicability to revealing and understanding entanglement in many-body problems with local interactions including higher spatial dimensions.
description: 14 pages, 7 figures
Radiative Corrections to $H^0\to WW/ZZ$ in the MSSM
Creators: name: Hollik, Wolfgang
name: Zhang, Jian-Hui
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The electroweak $\mathcal O(α)$ radiative corrections to the decay of the heavy CP-even MSSM Higgs boson to weak gauge bosons are presented. Due to the suppression of the tree-level $H^0WW/H^0ZZ$ coupling, the electroweak contributions to the partial decay width are significant. Although the effective Born decay width can be rather small for certain $M_{A^0}$ values (especially for large $\tanβ$), the corrected partial widths at different values of $M_{A^0}$ are of comparable size.
description: 13 pages, 7 figures, version to appear in PRD
Detection of a Super-Virial Hot Component in the Milky Way Circumgalactic Medium Along Multiple Sight-Lines by Using the Stacking Technique
Creators: name: Lara-DI, Armando
name: Mathur, Smita
name: Krongold, Yair
name: Das, Sanskriti
name: Gupta, Anjali
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The study of the elusive hot component ($T \gtrsim 10^7$ K) of the Milky Way circumgalactic medium (CGM) is a novel topic to understand Galactic formation and evolution. In this work, we use the stacking technique through 46 lines of sight with Chandra ACIS-S HETG totaling over 10Ms of exposure time and 9 lines of sight with ACIS-S LETG observations totaling over 1Ms of exposure time, to study in absorption the presence of highly ionized metals arising from the super-virial temperature phase of the CGM. Focusing in the spectral range $4 - 8$ $Å$, we were able to confirm the presence of this hot phase with high significance. We detected transitions of Si XIV K$α$ (with total significance of 6.0$σ$) and, for the first time, SXVI K (total significance 4.8$σ$) in the rest frame of our own Galaxy. For S XVI K$α$ we found a column density of $1.50^{+0.44}_{-0.38} \times 10^{16} \mathrm{cm}^{-2}$. For Si XIV K$α$ we measured a column density of $0.87\pm{0.16} \times 10^{16} \mathrm{cm}^{-2}$. The lines of sight used in this work are spread across the sky, probing widely separated regions of the CGM. Therefore, our results indicate that this newly discovered hot medium extends throughout the halo, and is not related only to the Galactic Bubbles. The hot gas location, distribution, and covering factor, however, remain unknown. This component might contribute significantly to the missing baryons and metals in the Milky Way.
A generalized effective spin-chain formalism for strongly interacting spinor gases in optical lattice
Creators: name: Basak, Sagarika
name: Pu, Han
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: A generalized effective spin-chain model is developed for studies of strongly interacting spinor gases in a one-dimensional (1D) optical lattice. The spinor gas is mapped to a system of spinless fermions and a spin-chain. A generalized effective spin-chain Hamiltonian that acts on the mapped system is developed to study the static and dynamic properties of the spinor gas. This provides a computationally efficient alternative tool to study strongly interacting spinor gases in 1D lattice systems. This formalism permits the study of spinor gases with arbitrary spin and statistics, providing a generalized approach for 1D strongly interacting gases. By virtue of its simplicity, it provides an easier tool to study and gain deeper insights into the system. In combination with the model defined previously for continuum systems, a unified framework is developed. Studying the mapped system using this formalism recreates the physics of spinor gas in 1D lattice. Additionally, the time evolution of a quenched system is studied. The generalized effective spin-chain formalism has potential applications in the study of a multitude of interesting phenomena arising in lattice systems such as high-$T_c$ superconductivity and the spin-coherent \& spin-incoherent Luttinger liquid regimes.
description: 16 pages, 8 figures; More concise Introduction, Section on Time evolution now includes harmonic trap in line with conventional open-boundary analyses, Updated figures, Typos corrected
Is the dream solution to the continuum hypothesis attainable?
Creators: name: Hamkins, Joel David
Publisher: name: arXiv
Year: 2012
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 03Exx, 03Axx

description: The dream solution of the continuum hypothesis (CH) would be a solution by which we settle the continuum hypothesis on the basis of a newly discovered fundamental principle of set theory, a missing axiom, widely regarded as true. Such a dream solution would indeed be a solution, since we would all accept the new axiom along with its consequences. In this article, however, I argue that such a dream solution to CH is unattainable. The article is adapted from and expands upon material in my article, "The set-theoretic multiverse", to appear in the Review of Symbolic Logic (see arXiv:1108.4223).
description: This article is based upon an argument I gave during the course of a three-lecture tutorial on set-theoretic geology at the summer school "Set Theory and Higher-Order Logic: Foundational Issues and Mathematical Developments", at the University of London, Birkbeck in August 2011
Speeding up the spatial adiabatic passage of matter waves in optical microtraps by optimal control
Creators: name: Negretti, Antonio
name: Benseny, Albert
name: Mompart, Jordi
name: Calarco, Tommaso
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We numerically investigate the performance of atomic transport in optical microtraps via the so called spatial adiabatic passage technique. Our analysis is carried out by means of optimal control methods, which enable us to determine suitable transport control pulses. We investigate the ultimate limits of the optimal control in speeding up the transport process in a triple well configuration for both a single atomic wave packet and a Bose-Einstein condensate within a regime of experimental parameters achievable with current optical technology.
description: 17 pages, 14 figures
Reversible Control of Magnetic Interactions by Electric Field in a Single Phase Material
Creators: name: Ryan, P. J.
name: Kim, J. -W.
name: Birol, T.
name: Thompson, P.
name: Lee, J. -H.
name: Ke, X.
name: Normile, P. S.
name: Karapetrova, E.
name: Schiffer, P.
name: Brown, S. D.
name: Fennie, C. J.
name: Schlom, D. G.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Intrinsic magnetoelectric coupling describes the interaction between magnetic and electric polarization through an inherent microscopic mechanism in a single phase material. This phenomenon has the potential to control the magnetic state of a material with an electric field, an enticing prospect for device engineering. We demonstrate 'giant' magnetoelectric cross-field control in a single phase rare earth titanate film. In bulk form, EuTiO3 is antiferromagnetic. However, both anti and ferromagnetic interactions coexist between different nearest neighbor europium ions. In thin epitaxial films, strain can be used to alter the relative strength of the magnetic exchange constants. Here, we not only show that moderate biaxial compression precipitates local magnetic competition, but also demonstrate that the application of an electric field at this strain state, switches the magnetic ground state. Using first principles density functional theory, we resolve the underlying microscopic mechanism resulting in the EuTiO3 G-type magnetic structure and illustrate how it is responsible for the 'giant' cross-field magnetoelectric effect.
title: Chemonastic Stalked Glands in the Carnivorous Rainbow Plant Byblis gigantea LINDL. (Byblidaceae, Lamiales)
Creators: name: Poppinga, Simon
name: Knorr, Noah
name: Ruppert, Sebastian
name: Speck, Thomas
Publisher: name: MDPI
Year: 2023

description: Carnivorous rainbow plants (Byblis, Byblidaceae, Lamiales) possess sticky flypaper traps for the capture, retention, and digestion of prey (mainly small insects). The trapping system is based on a multitude of millimeter-sized glandular trichomes (also termed stalked glands), which produce adhesive glue drops. For over a century, the trapping system of Byblis was considered passive, meaning that no plant movement is involved. Recently, a remarkable discovery was made: the stalked glands of Byblis are indeed capable of reacting to chemical (protein) stimuli with slow movement responses. This prompted us to investigate this phenomenon further with a series of experiments on the stimulation, kinematics, actuation, and functional morphology of the stalked glands of cultivated Byblis gigantea plants. Measured stalked gland lengths and densities on the trap leaves are similar to the data from the literature. Motion reactions could only be triggered with chemical stimuli, corroborating the prior study on the stalked gland sensitivity. Reaction time (i.e., time from stimulation until the onset of motion) and movement duration are temperature-dependent, which hints towards a tight physiological control of the involved processes. The stalked gland movement, which consist of a sequence of twisting and kinking motions, is rendered possible by the components of the stalk cell wall and is furthermore anatomically and mechanically predetermined by the orientation of cellulose microfibrils in the cell wall. Successive water displacement processes from the stalk cell into the basal cells actuate the movement. The same kinematics could be observed in stalked glands drying in air or submersed in a saturated salt solution. Stimulated and dried stalked glands as well as those from the hypertonic medium were capable of regaining their initial shape by rehydration in water. However, no glue production could be observed afterwards. The long-time overlooked chemonastic movements of stalked glands may help Byblis to retain and digest its prey; however, further research is needed to shed light on the ecological characteristics of the rainbow plant’s trapping system.