cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Recent Advances in the Foundations and Applications of Unbiased Learning to Rank
Creators: name: Gupta, Shashank
name: Hager, Philipp
name: Huang, Jin
name: Vardasbi, Ali
name: Oosterhuis, Harrie
Publisher: name: arXiv
Year: 2023
Subjects: subject: Information Retrieval (cs.IR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Since its inception, the field of unbiased learning to rank (ULTR) has remained very active and has seen several impactful advancements in recent years. This tutorial provides both an introduction to the core concepts of the field and an overview of recent advancements in its foundations along with several applications of its methods. The tutorial is divided into four parts: Firstly, we give an overview of the different forms of bias that can be addressed with ULTR methods. Secondly, we present a comprehensive discussion of the latest estimation techniques in the ULTR field. Thirdly, we survey published results of ULTR in real-world applications. Fourthly, we discuss the connection between ULTR and fairness in ranking. We end by briefly reflecting on the future of ULTR research and its applications. This tutorial is intended to benefit both researchers and industry practitioners who are interested in developing new ULTR solutions or utilizing them in real-world applications.
description: SIGIR 2023 - Tutorial
Entanglement distillation by dissipation and continuous quantum repeaters
Creators: name: Vollbrecht, Karl Gerd H.
name: Muschik, Christine A.
name: Cirac, J. Ignacio
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Even though entanglement is very vulnerable to interactions with the environment, it can be created by purely dissipative processes. Yet, the attainable degree of entanglement is profoundly limited in the presence of noise sources. We show that distillation can also be realized dissipatively, such that a highly entanglement steady state is obtained. The schemes put forward here display counterintuitive phenomena, such as improved performance if noise is added to the system. We also show how dissipative distillation can be employed in a continuous quantum repeater architecture, in which the resources scale polynomially with the distance.
On the algebra of local unitary invariants of pure and mixed quantum states
Creators: name: Vrana, Peter
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study the structure of the inverse limit of the graded algebras of local unitary invariant polynomials using its Hilbert series. For k subsystems, we conjecture that the inverse limit is a free algebra and the number of algebraically independent generators with homogenous degree 2m equals the number of conjugacy classes of index m subgroups in a free group on k-1 generators. Similarly, we conjecture that the inverse limit in the case of k-partite mixed state invariants is free and the number of algebraically independent generators with homogenous degree m equals the number of conjugacy classes of index m subgroups in a free group on k generators. The two conjectures are shown to be equivalent. To illustrate the equivalence, using the representation theory of the unitary groups, we obtain all invariants in the m=2 graded parts and express them in a simple form both in the case of mixed and pure states. The transformation between the two forms is also derived. Analogous invariants of higher degree are also introduced.
description: 14 pages, no figures
Gap Analysis in the Current Knowledge Limitations in Drought Assessment Research in the Eastern Nile River Basin.pdf
Creators: name: Ali, Marwa
name: Helmi, Ahmed
name: Ghaith, Mostafa
name: Wagdy, Ahmed
Publisher: name: figshare
Year: 2022
Subjects: subject: 90599 Civil Engineering not elsewhere classified
subject: FOS: Civil engineering
subject: Hydrology
subject: 40604 Natural Hazards
subject: FOS: Earth and related environmental sciences
subject: 50209 Natural Resource Management
subject: 40104 Climate Change Processes
subject: 40301 Basin Analysis

description: The drought recurrence builds up potential stresses affecting
the countries with transboundary river basins. The Nile River
is the lifeblood for 11 countries in Africa. In addition, it was
and still a point of interest and under extensive researches since
early civilization. According to the International Disasters
Database (EM-DAT), the Eastern Nile Basin (ENB) suffered
from several periods of droughts in the last 30 years that
affected millions of lives and led to serious economic,
environmental and health impacts. Moreover, the increase in
water demand due to population growth and associated
development will be most critical in severe drought periods.
Therefore, drought monitoring and assessment techniques are
crucial to allow mitigation measures to reduce the drought's
destructive impacts and losses. This paper assesses the recent
researches related to drought occurrence, its extent and
distinguishing between types of drought and the commonly
used drought indices on the ENB. It is revealed that the drought
assessment studies never dealt with the dependency between
the sub-catchments of the ENB that have a dynamic regime
affected by drought events. In conclusion, the paper identified
the gaps in drought assessment research if addressed by
researchers, could create substantial leverage on water
management under drought conditions.
Survival and migration characteristics of juvenile Sockeye salmon (Oncorhynchus nerka) smolts through complex nearshore coastal migration corridors
Creators: name: Johnston, Stephen D.
Publisher: name: University of British Columbia
Year: 2020

description: Telemetry tracking of Fraser River Sockeye salmon (Oncorhynchus nerka) smolts from Chilko Lake to the open ocean has revealed relatively high mortality through some coastal areas of British Columbia, and that coastal migratory routes may influence survival. Acoustic arrays were strategically deployed through the Discovery Islands region to track tagged smolts across all possible migratory routes, including three major entrances: Discovery Passage (DP), Sutil Channel (SC), and Desolation Sound (DS). A total of 465 smolts were tagged and released at Chilko Lake in 2017 (n = 315) and in the Northern Strait of Georgia in 2018 (n = 150) using a combination of VEMCO V4, V5 and V7 transmitters. Smolts were observed using all three routes with SC (n = 101), the most central, having the greatest proportion of use, followed by DP (n = 44) and DS (n = 13). Survival of the 2018 smolts was estimated using a Cormack Jolly Seber framework adjusted to account for variable distances of the major migratory routes. Highest survival was in DS (84% /100 km, 95% CI: 46 - 97%), followed by DP (71%, 95% CI: 39 - 90%), and lastly SC (48%, 95% CI: 37 - 60%). Each route presents variable environmental conditions that may influence smolt survival likely through variable exposure to predators. Smolts migrated through DP with mean travel rates of 36 km.d⁻¹ (SE ± 1.8) which was 1.7 times faster than through SC (mean travel rates of 21.5 km.d⁻¹ (SE ± 1.8) and 2.4 times faster than through DS (mean travel rates of 15 km.d⁻¹ (SE ± 2.9 ). Extreme tidal currents present with DP provide rapid transport of smolts through the route, while other routes provide beneficial currents further along their migration path. Survival and travel rates did not appear to be linked as survival was poorest through SC which had the ‘intermediate’ travel rate. This study provides the most detailed picture of behaviour and mortality of Pacific salmon smolt migrations in marine coastal areas to date and highlights the potential of spatiotemporal variability of migration to impact survival in early marine migrations of smolts.
Elettromigrazione di batteri: Uno strumento per gli studi sui batteri ciliati anaerobici
Creators: name: Ceretti, Mattia
Publisher: name: Scuola Universitaria della Svizzera Italiana (SUPSI)
Year: 2019

description: Questo progetto ha lo scopo di fornire una strumentazione d’analisi di alcune tipologie di batteri, i «ciliati d’acqua dolce». Tali batteri sono sensibili ai campi elettrici. Tramite dei campi elettrici specifici è possibile attivare differenti famiglie di batteri ciliati e metterli in movimento. Per tale motivo, si è scelto di realizzare un alimentatore in grado di fornire una tensione o una corrente costante. L’alimentatore progettato può erogare una tensione variabile da 10V a 200VDC, o una corrente regolabile da 50µA a 3mA. È stata creata una struttura meccanica composta da 3 celle per accogliere i sedimenti contenenti i batteri ciliati (cella 1) e permettere la loro migrazione (cella 2) sino a giungere nella cella finale (cella 3). Il progetto si è basato su alcuni studi e ricerche svolte nel periodo 1986 - 1990.
Rethinking Population-assisted Off-policy Reinforcement Learning
Creators: name: Zheng, Bowen
name: Cheng, Ran
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: While off-policy reinforcement learning (RL) algorithms are sample efficient due to gradient-based updates and data reuse in the replay buffer, they struggle with convergence to local optima due to limited exploration. On the other hand, population-based algorithms offer a natural exploration strategy, but their heuristic black-box operators are inefficient. Recent algorithms have integrated these two methods, connecting them through a shared replay buffer. However, the effect of using diverse data from population optimization iterations on off-policy RL algorithms has not been thoroughly investigated. In this paper, we first analyze the use of off-policy RL algorithms in combination with population-based algorithms, showing that the use of population data could introduce an overlooked error and harm performance. To test this, we propose a uniform and scalable training design and conduct experiments on our tailored framework in robot locomotion tasks from the OpenAI gym. Our results substantiate that using population data in off-policy RL can cause instability during training and even degrade performance. To remedy this issue, we further propose a double replay buffer design that provides more on-policy data and show its effectiveness through experiments. Our results offer practical insights for training these hybrid methods.
description: Genetic and Evolutionary Computation Conference (GECCO '23)
Plug & Play Carport station
Creators: name: Comolli, Luca
Publisher: name: Scuola Universitaria della Svizzera Italiana (SUPSI)
Year: 2020

description: Con il seguente progetto si intende verificare i limiti di fattibilità legati agli aspetti strutturali, tramite dovuta progettazione, di una struttura Carport in grado di produrre energia elettrica mediante nove moduli fotovoltaici bifacciali, posizionati sulla parte superiore. Si intendono quindi studiare ed analizzare le principali differenze ed i principali tratti comuni che incorrono tra la le diverse tipologie di pensiline fotovoltaiche presenti sul mercato, al fine di essere in grado di distinguere e conoscere le differenti configurazioni attualmente in uso. In primo luogo, è stata eseguita l’analisi e lo studio delle funzioni e/o discrepanze presenti tra i differenti componenti costitutivi dell’impianto, e infine si sono studiate le caratteristiche principali dei sistemi al momento utilizzati. Successivamente è stata eseguita un’approfondita analisi dei carichi dovuti ad agenti atmosferici (neve e vento), che sono stati determinati in concomitanza con la normativa vigente a livello Svizzero, “SIA 261:2014 Azioni sulle strutture portanti”. Utilizzando i carichi determinati secondo normativa, sono state quindi eseguite alcune simulazioni iniziali della struttura di sostegno, utilizzando degli elementi monodimensionali, dove si sono determinate le dimensioni minime delle sezioni delle parti portanti del sistema utilizzando due differenti tipologie di materiali: Alluminio EN AW-5083 e Acciaio da costruzione S235JR. Si è passati quindi alla determinazione di tutte le funzioni e caratteristiche desiderate dall’azienda committente GruelMob, proponendone per ognuna differenti varianti, analizzate e determinate successivamente mediante il metodo della cassa morfologica. Sono state in seguito dimensionate e analizzate da un punto di vista strutturale, le soluzioni scelte mediante simulazioni ad elementi finiti, cercando di semplificarne le relative situazioni, grazie all’integrazione di differenti metodologie di modelli, al fine di ridurne il tempo computazionale. Infine ci si è soffermati sull’illustrazione della configurazione finale scelta, e sulla rappresentazione esaustiva della sequenza di montaggio necessaria, al fine di eseguire una corretta installazione del sistema.
Modeling galactic halos with predominantly quintessential matter
Creators: name: Rahaman, F.
name: Kuhfittig, Peter K. F.
name: Chakraborty, K.
name: Kalam, M.
name: Hossain, D.
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: This paper discusses a new model for galactic dark matter by combining an anisotropic pressure field corresponding to normal matter and a quintessence dark energy field having a characteristic parameter $ω_q$ such that $-1
description: 12 pages, 1 figure
Проблемні аспекти діяльності кримінальної поліції по розкриттю злочинів
Creators: name: Orlov, Viktor
Publisher: name: figshare
Year: 2021
Subjects: subject: 180110 Criminal Law and Procedure
subject: FOS: Law

description: Вкрай негативні тенденції злочинності, що супроводжуються наростанням фактичного відставання можливостей правоохоронної системи від розвитку злочинності відбувається через недоліки та прорахунки систем забезпечення діяльності правоохоронних органів, що обумовлює високий рівень латентності злочинності, безкарність винних у вчиненні злочинів та в цілому неспроможність правоохоронних органів у сучасних умовах ефективно протидіяти злочинності [1, с. 17]. Наше суспільство відчуває стан захищеності життєво важливих інтересів особи від злочинних посягань та оцінює діяльність органів правопорядку по належному рівню виявлення та попередження конкретних кримінальних правопорушень в містах, селищах та селах. Тому метою зусиль науковців та практичних працівників є з’ясування проблем пов’язаних з діяльністю кримінальної поліції по розкриттю злочинів та моделювання перспектив у вирішенні актуальних проблем у цій сфері. Виявленням кримінальних правопорушень, припиненням виявлених кримінальних правопорушень, розшуком осіб, які переховуються від органів досудового розслідування, суду, тих що пропали без вісті в Національній поліції України займаються підрозділи кримінальної поліції. Дієвим інструментом для попередження, своєчасного виявлення і припинення злочинів, а також встановлення фактичних даних по кримінальному правопорушенню є оперативнорозшукова та інформаційно-аналітична (інформаційно-пошукова) діяльність цих підрозділів. Завдяки окремим проблемним питанням розробники та планували ще з початку створення Національної поліції України (далі НПУ), практичний етап цих перетворень був розповсюджений тим, що не потрібно. У січні 2017 року в Головному наступному управлінні НПУ та 7 відділеннях поліції було створено так звані відділи «детективів», завдяки яким було удосконалено ефективність розкриття злочинів та розслідування кримінальних проваджень. Вже в січні 2018 року в усіх територіальних органах НПУ було створено «службу детективів» - відділи розслідування особливостей тяжких злочинів наступного управління [3]. Створіть бажаний із 75 відсотків оперативних працівників (які приймають на роботу наступних) та 25 відсотків - з наступних. «Детективний» підрозділ здійснює діяльність за напрямами: загальнокримінальні злочини, наркозлочинність, кібербезпека, економічні злочини та злочини у службі службової діяльності. Таким чином, об'єднання в одному підрозділі співробітників органу досудового розслідування та кримінальної поліції на новому рівні призначається до поділу складів у розкритті злочинів. Впровадження інституту детективів у Національній поліції України з підготовки відповідних законодавчих актів є прогресивним напрямком розвитку кримінальної поліції в Україні.
Shining light on the complexity of cardiac rehabilitation utilization by patients with heart disease
Creators: name: Adhami, Nassim
Publisher: name: University of British Columbia
Year: 2020

description: Chronic heart disease is one of the most prevalent forms of chronic disease, and generates significant negative impacts on patients/families, the healthcare system, and the overall Canadian economy. Cardiac rehabilitation (CR) has become recognized as a comprehensive care program for the management of chronic heart disease. However, despite significant evidence of their efficacy, cardiac rehabilitation programs continue to be underutilized in Canada and other parts of the world. Current literature regarding CR underutilization has illuminated its complexity by beginning to point to numerous factors operating at healthcare system, healthcare provider, and patient levels. This research project makes a significant contribution by exploring the experiences of cardiac patients utilizing CR programs, and critically examining how their experiences were shaped by intersections of personal, social and political contexts that overlap at individual, healthcare provider, and healthcare system levels. Guided by the qualitative methodology of interpretive description and the theoretical perspective of intersectionality, data were collected and analyzed from 19 cardiac patient informants through semi-structured one-to-one interviews and participant observations of CR programs. Constant comparative data analysis was employed to inductively analyze themes. The findings showed that cardiac patients’ utilization of a CR program involved an interplay between elements of a prescribed CR program utilization journey and the concomitant personal journey of each individual. The theoretical perspective of intersectionality allowed for the identification of how cardiac patients participating in this study were caught in an interconnected dynamic web of social relationships that acted as influences promoting or interfering with their ability to utilize a CR program. Discussion of the findings in this research highlight several implications, including the need for a shift in the delivery of the CR programs from a ‘one-size-fits-all’ approach to a person-centered care approach that values both the personal and prescribed journeys. The findings also pointed to a need to assess, develop, and implement provincial based harmonized systematic referrals that include the entire geography of the province. CR participants’ experiences also pointed to a need for restructuring CR programs to include extended hours/days of operation, childcare onsite, patient input regarding the content of information sessions, and family/caregiver involvement.
Constraining PCP Violating Varying Alpha Theory Through Laboratory Experiments
Creators: name: Maity, Debaprasad
name: Chen, Pisin
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this report we have studied the implication of a parity and charge-parity (PCP) violating interaction in varying alpha theory. Due to this interaction, the state of photon polarization can change when it passes through a strong background magnetic field. We have calculated the optical rotation and ellipticity of the plane of polarization of an electromagnetic wave and tested our results against different laboratory experiments. Our model contains a PCP violating parameter $β$ and a scale of alpha variation $ω$. By analyzing the laboratory experimental data, we found the most stringent constraints on our model parameters to be $1\leq ω\leq 10^{13} GeV^2$ and $-0.5\leq β\leq 0.5$. We also found that with the existing experimental input parameters it is very difficult to detect the ellipticity in the near future.
description: 15 pages, 1 figure
Modeling Quantum Mechanical Observers via Neural-Glial Networks
Creators: name: Konishi, Eiji
Publisher: name: arXiv
Year: 2010
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We investigate the theory of observers in the quantum mechanical world by using a novel model of the human brain which incorporates the glial network into the Hopfield model of the neural network. Our model is based on a microscopic construction of a quantum Hamiltonian of the synaptic junctions. Using the Eguchi-Kawai large N reduction, we show that, when the number of neurons and astrocytes is exponentially large, the degrees of freedom of the dynamics of the neural and glial networks can be completely removed and, consequently, that the retention time of the superposition of the wave functions in the brain is as long as that of the microscopic quantum system of pre-synaptics sites. Based on this model, the classical information entropy of the neural-glial network is introduced. Using this quantity, we propose a criterion for the brain to be a quantum mechanical observer.
description: 24 pages, published version
Complex Brownian Motion Representation of the Dyson Model
Creators: name: Katori, Makoto
name: Tanemura, Hideki
Publisher: name: arXiv
Year: 2010
Subjects: subject: Probability (math.PR)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 60J70, 60G44, 82C22, 32A15, 15A52

description: Dyson's Brownian motion model with the parameter $β=2$, which we simply call the Dyson model in the present paper, is realized as an $h$-transform of the absorbing Brownian motion in a Weyl chamber of type A. Depending on initial configuration with a finite number of particles, we define a set of entire functions and introduce a martingale for a system of independent complex Brownian motions (CBMs), which is expressed by a determinant of a matrix with elements given by the conformal transformations of CBMs by the entire functions. We prove that the Dyson model can be represented by the system of independent CBMs weighted by this determinantal martingale. From this CBM representation, the Eynard-Mehta-type correlation kernel is derived and the Dyson model is shown to be determinantal. The CBM representation is a useful extension of $h$-transform, since it works also in infinite particle systems. Using this representation, we prove the tightness of a series of processes, which converges to the Dyson model with an infinite number of particles, and the noncolliding property of the limit process.
description: v5:AMS-LaTeX, 19 pages, no figure, final version appearing in ECP
Additional file 1: of Assessing policy-makersâ , academicsâ and expertsâ satisfaction with the performance of the Palestinian health research system: a qualitative study
Creators: name: AlKhaldi, Mohammed
name: Abed, Yehia
name: Pfeiffer, Constanze
name: Haj-Yahia, Saleem
name: Alkaiyat, Abdulsalam
name: Tanner, Marcel
Publisher: name: figshare
Year: 2018
Subjects: subject: Medicine
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences

description: Supplement 1. Map of Palestine. Supplement 2. List of targeted institutions across the government, academic universities, and local and international non-governmental organisations working in Palestine. Supplement 3. Selection criteria for selected study institutions and participants. Supplement 4. The study instruments (in-depth interviews (IDIs) and focus group discussions (FGDs)). Table S1. Characteristics of the IDI participants. Table S2. Characteristics of the FGDs participants. (DOCX 79 kb)
Maximum Rate of Unitary-Weight, Single-Symbol Decodable STBCs
Creators: name: Karmakar, Sanjay
name: Srinath, K. Pavan
name: Rajan, B. Sundar
Publisher: name: arXiv
Year: 2011
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: It is well known that the Space-time Block Codes (STBCs) from Complex orthogonal designs (CODs) are single-symbol decodable/symbol-by-symbol decodable (SSD). The weight matrices of the square CODs are all unitary and obtainable from the unitary matrix representations of Clifford Algebras when the number of transmit antennas $n$ is a power of 2. The rate of the square CODs for $n = 2^a$ has been shown to be $\frac{a+1}{2^a}$ complex symbols per channel use. However, SSD codes having unitary-weight matrices need not be CODs, an example being the Minimum-Decoding-Complexity STBCs from Quasi-Orthogonal Designs. In this paper, an achievable upper bound on the rate of any unitary-weight SSD code is derived to be $\frac{a}{2^{a-1}}$ complex symbols per channel use for $2^a$ antennas, and this upper bound is larger than that of the CODs. By way of code construction, the interrelationship between the weight matrices of unitary-weight SSD codes is studied. Also, the coding gain of all unitary-weight SSD codes is proved to be the same for QAM constellations and conditions that are necessary for unitary-weight SSD codes to achieve full transmit diversity and optimum coding gain are presented.
description: accepted for publication in the IEEE Transactions on Information Theory, 9 pages, 1 figure, 1 Table
Questo quadro è stranissimo: indagando la possibilità di avvicinare il bambino nella fase del realismo visivo all’astrattismo.
Creators: name: Barusco, Michela
Publisher: name: Scuola Universitaria della Svizzera Italiana (SUPSI)
Year: 2011

description: Il mio lavoro di ricerca si articola attorno all’ampia tematica del bambino che si trova di fronte a un’opera d’arte. Ho indagato specificatamente l’argomento legato all’assioma, espresso da Dallari e Francucci nel 1990, che sostiene che il bambino, nella fase del realismo visivo, sia convinto che un’opera d’arte debba essere una sorta di rappresentazione fotografica della realtà. I medesimi autori asseriscono inoltre che questo bambino, rifiuta i dipinti di natura astratta, perché per lui incomprensibili. Lo scopo della mia ricerca è stato quello di capire se effettivamente questi soggetti rifiutano e non comprendono le opere astratte. Ho proposto a cinque bambini di quinta elementare una prima intervista semi-strutturata, durante la quale ho mostrato quattro dipinti astratti; dall’analisi dei protocolli delle interviste è emerso che questi soggetti non rifiutano queste opere. Un secondo aspetto importante era quello di capire se fosse possibile, attraverso una dimensione narrativa che presentasse alcuni aspetti della vita di un autore, unita alla riproduzione del dipinto, interessare i ragazzi a un quadro ritenuto inizialmente poco accattivante. Dopo la presentazione e l’attività di copia del dipinto astratto, ho riproposto le interviste semistrutturate. Analizzandole è risultato che è possibile interessare il bambino, mediante la parola, a un opera di questa corrente artistica, inoltre la dimensione del fare favorisce ulteriormente la comprensione della sua complessità. Relatrice: Luisa Figini
Single-Shot Implicit Morphable Faces with Consistent Texture Parameterization
Creators: name: Lin, Connor Z.
name: Nagano, Koki
name: Kautz, Jan
name: Chan, Eric R.
name: Iqbal, Umar
name: Guibas, Leonidas
name: Wetzstein, Gordon
name: Khamis, Sameh
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: There is a growing demand for the accessible creation of high-quality 3D avatars that are animatable and customizable. Although 3D morphable models provide intuitive control for editing and animation, and robustness for single-view face reconstruction, they cannot easily capture geometric and appearance details. Methods based on neural implicit representations, such as signed distance functions (SDF) or neural radiance fields, approach photo-realism, but are difficult to animate and do not generalize well to unseen data. To tackle this problem, we propose a novel method for constructing implicit 3D morphable face models that are both generalizable and intuitive for editing. Trained from a collection of high-quality 3D scans, our face model is parameterized by geometry, expression, and texture latent codes with a learned SDF and explicit UV texture parameterization. Once trained, we can reconstruct an avatar from a single in-the-wild image by leveraging the learned prior to project the image into the latent space of our model. Our implicit morphable face models can be used to render an avatar from novel views, animate facial expressions by modifying expression codes, and edit textures by directly painting on the learned UV-texture maps. We demonstrate quantitatively and qualitatively that our method improves upon photo-realism, geometry, and expression accuracy compared to state-of-the-art methods.
description: SIGGRAPH 2023, Project Page: https://research.nvidia.com/labs/toronto-ai/ssif
Macchina per la caratterizzazione dei giunti che compongono i robot antropomorfi del laboratorio ARM
Creators: name: Bernasconi, Tommaso
Publisher: name: Scuola Universitaria della Svizzera Italiana (SUPSI)
Year: 2020

description: Il progetto presentato in questa rapporto di lavoro ha come obiettivo lo sviluppo di un macchinario adibito alla caratterizzazione completa dei giunti che compongono il robot antropomorfo del laboratorio ARM. Il lavoro è stato svolto in quattro fasi. Inizialmente è stato necessario analizzare e comprendere completamente il funzionamento dei giunti e delle caratteristiche che li distinguono per poter definire le funzioni e le specifiche del macchinario. Secondariamente il lavoro è proseguito con l’analisi delle tecnologie presenti sul mercato per poi definire la prima idealizzazione di soluzione tramite la comparazione di diverse varianti. La terza fase consiste nella progettazione del banco di prova. Sono stati scelti gli elementi necessari al funzionamento completo e dimensionati al fine di ottenere funzionalità e rigidezza strutturale. Finalmente, vengono definiti i procedimenti dei test atti alla caratterizzazione dei giunti. Questi rispondono alle richieste del committente dal momento che mettono sotto esame precisione di posizionamento, velocità, accelerazione, assorbimento elettrico, coppia massima, sensori di feedback, tempo di risposta e capacità del freno meccanico. Vengono infine elencata una serie di proposte su cui il progetto può proseguire al fine di essere completato, ottimizzato e infine reso operativo.
Active to sterile neutrino oscillations: Coherence and MINOS results
Creators: name: Hernandez, Daniel
name: Smirnov, A. Yu.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We study the $ν_μ- ν_s$ oscillation effects in the near detector of the MINOS experiment. Conceptually, the MINOS search for sterile neutrinos with mass $\sim 1$ eV realizes an interesting situation of partial decoherence of the neutrino state at the production. This corresponds to a difference of energies of the two mass eigenstates that is comparable with or bigger than the width of the initial state (pion). We show that these effects modify the MINOS bound on mixing of sterile neutrino for $Δm^2_{41} \aprge 0.5$ eV$^2$ and make the experiment insensitive to oscillations with $Δm^2_{41} \gtrsim 15$ eV$^2$. Oscillations with $Δm^2_{41} = (1 - 3)$ eV$^2$ could explain some deficit of events observed in the low energy bins in the near detector and correspondingly the excess of events in the far detector.
description: 17 pages, 7 figures. Published version
Exploring the use of mobile language learning technology as a means for urban Indigenous youth to connect to identity and culture
Creators: name: Shilling, Amber Jean
Publisher: name: University of British Columbia
Year: 2020

description: This study draws on Anishinaabe teachings and Indigenous methodology such as storywork (Archibald, 2008) to engage urban Indigenous youth in discussions on how they use technology to connect with identity, culture, and language and consider how this may inform cultural and linguistic preservation and revitalization efforts in the future. Beginning each discussion with ceremony, sharing circles and one-on-one conversations were used as methods within this research, further supplemented by field notes. Following traditional protocol in the design, implementation, and writing process ensured participant stories were treated with reverence and minimal interference on the part of the researcher. The stories of participants were organized by considering important pieces of information as stars, and groupings of similar stars as constellations. Reading the sky emerged as a way to acknowledge previous work in language revitalization and consider new directions based on the teachings shared by the youth. The stories shared within this process demonstrate youth’s desire to participate in the creation of digital learning repositories for community members. Social media emerged as an area for increased focus on teaching and learning within Indigenous communities, suggesting prioritizing relationships and online communities is a promising strategy for engaging youth in language and cultural learning opportunities.
Static Analysis for Extracting Permission Checks of a Large Scale Framework: The Challenges And Solutions for Analyzing Android
Creators: name: Bartel, Alexandre
name: Klein, Jacques
name: Monperrus, Martin
name: Traon, Yves Le
Publisher: name: arXiv
Year: 2014
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: A common security architecture is based on the protection of certain resources by permission checks (used e.g., in Android and Blackberry). It has some limitations, for instance, when applications are granted more permissions than they actually need, which facilitates all kinds of malicious usage (e.g., through code injection). The analysis of permission-based framework requires a precise mapping between API methods of the framework and the permissions they require. In this paper, we show that naive static analysis fails miserably when applied with off-the-shelf components on the Android framework. We then present an advanced class-hierarchy and field-sensitive set of analyses to extract this mapping. Those static analyses are capable of analyzing the Android framework. They use novel domain specific optimizations dedicated to Android.
description: IEEE Transactions on Software Engineering (2014). arXiv admin note: substantial text overlap with arXiv:1206.5829
Extraction of Kaon Formfactors from K^- -> mu^- nu_mu gamma Decay at ISTRA+ Setup
Creators: name: Collaboration, The ISTRA+
name: :
name: Duk, V. A.
name: Bolotov, V. N.
name: Khudyakov, A. A.
name: Lebedev, V. A.
name: Makarov, A. I.
name: Novikov, V. P.
name: Polyarush, A. Yu.
name: Akimenko, S. A.
name: Britvich, G. I.
name: Filin, A. P.
name: Inyakin, A. V.
name: Korolkov, I. Ya.
name: Leontiev, V. M.
name: Obraztsov, V. F.
name: Polyakov, V. A.
name: Romanovsky, V. I.
name: Tchikilev, O. G.
name: Uvarov, V. A.
name: Yushchenko, O. P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The radiative decay K->mu nu gamma has been studied at ISTRA+ setup in a new kinematical region. About 22K events of K^- -> mu^- nu_mu gamma have been observed. The sign and value of Fv-Fa have been measured for the first time. The result is Fv-Fa=0.21(4)(4).
description: 11 pages, 21 figures, submitted to Phys. Lett. B
title: Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° ÑÑÑÐ°ÑÐµÐ³Ð¸Ð¸ ÑÐ°Ð·Ð²Ð¸ÑÐ¸Ñ Ð¿ÑÐµÐ´Ð¿ÑÐ¸ÑÑÐ¸Ñ Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ Ð¾ÑÐµÐ½ÐºÐ¸ ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÐ¸ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÐµÑÑÑÑÐ½Ð¾Ð³Ð¾ Ð¿Ð¾ÑÐµÐ½ÑÐ¸Ð°Ð»Ð°
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Develop a strategy for enterprise development based on an assessment of the efficiency of resource potential utilization
Creators: name: Ð¡Ð¾ÑÐ¾ÐºÐ°, ÐÐ¸ÑÐ°Ð¸Ð»
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2020
Subjects: ÑÑÑÐ°ÑÐµÐ³Ð¸Ñ ÑÐ°Ð·Ð²Ð¸ÑÐ¸Ñ
ÑÐµÑÑÑÑÐ½ÑÐ¹ Ð¿Ð¾ÑÐµÐ½ÑÐ¸Ð°Ð»
ÑÐµÑÑÑÑÑ
Ð¾ÑÐµÐ½ÐºÐ° ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÐ¸
development strategy
resource capacity
resources
effectiveness assessment

description: ÐÐ°Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° Ð¾ÑÐµÐ½ÐºÐµ ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÐ¸ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÐµÑÑÑÑÐ½Ð¾Ð³Ð¾ Ð¿Ð¾ÑÐµÐ½ÑÐ¸Ð°Ð»Ð° Ð¸ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐºÐµ ÑÑÑÐ°ÑÐµÐ³Ð¸Ð¸ ÑÐ°Ð·Ð²Ð¸ÑÐ¸Ñ ÐºÐ¾Ð¼Ð¿Ð°Ð½Ð¸Ð¸. ÐÑÐ½Ð¾Ð²Ð½Ð°Ñ Ð¸Ð½ÑÐ¾ÑÐ¼Ð°ÑÐ¸Ñ Ð´Ð»Ñ Ð²ÑÐ¿Ð¾Ð»Ð½ÐµÐ½Ð¸Ñ Ð¿Ð¾ÑÑÐ°Ð²Ð»ÐµÐ½Ð½ÑÑ Ð·Ð°Ð´Ð°Ñ Ð±ÑÐ»Ð° Ð¿Ð¾Ð»ÑÑÐµÐ½Ð° Ð² Ð°Ð³ÐµÐ½ÑÑÑÐ²Ðµ Ð½ÐµÐ´Ð²Ð¸Ð¶Ð¸Ð¼Ð¾ÑÑÐ¸ ÐÐÐ Â«ÐÐ¾Ð½Ð¾Ð»Ð¸Ñ ÐÐ»ÑÑÂ». Ð ÐºÐ¾Ð¼Ð¿Ð°Ð½Ð¸Ð¸ Ð±ÑÐ»Ð° Ð¿Ð¾Ð»ÑÑÐµÐ½Ð° ÑÐ»ÐµÐ´ÑÑÑÐ°Ñ Ð¸Ð½ÑÐ¾ÑÐ¼Ð°ÑÐ¸Ñ: ÑÐ¸Ð½Ð°Ð½ÑÐ¾Ð²Ð°Ñ Ð¸ Ð±ÑÑÐ³Ð°Ð»ÑÐµÑÑÐºÐ°Ñ Ð¾ÑÑÐµÑÐ½Ð¾ÑÑÐ¸, Ð¾ÑÐ³Ð°Ð½Ð¸Ð·Ð°ÑÐ¸Ð¾Ð½Ð½ÑÐµ Ð´Ð°Ð½Ð½ÑÐµ.
Ð ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐµ Ð°Ð½Ð°Ð»Ð¸Ð·Ð° Ð¿ÑÐµÐ´Ð¿ÑÐ¸ÑÑÐ¸Ñ Ð¼Ñ Ð²ÑÑÑÐ½Ð¸Ð»Ð¸ ÐµÐ³Ð¾ ÑÐ¸Ð½Ð°Ð½ÑÐ¾Ð²Ð¾Ðµ ÑÐ¾ÑÑÐ¾ÑÐ½Ð¸Ðµ, ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÑ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÐµÑÑÑÑÐ½Ð¾Ð³Ð¾ Ð¿Ð¾ÑÐµÐ½ÑÐ¸Ð°Ð»Ð°. ÐÐ° Ð¾ÑÐ½Ð¾Ð²Ðµ Ð¿Ð¾Ð»ÑÑÐµÐ½Ð½ÑÑ Ð´Ð°Ð½Ð½ÑÑ Ð¼Ñ ÑÐ¾ÑÑÐ°Ð²Ð¸Ð»Ð¸ Ð½Ð¾Ð²ÑÑ ÑÑÑÐ°ÑÐµÐ³Ð¸Ñ ÑÐ°Ð·Ð²Ð¸ÑÐ¸Ñ, Ð¿Ð¾Ð·Ð²Ð¾Ð»ÑÑÑÑÑ ÑÐ»ÑÑÑÐ¸ÑÑ Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÑ ÐºÐ¾Ð¼Ð¿Ð°Ð½Ð¸Ð¸ Ð½Ð° Ð´Ð°Ð½Ð½ÑÐ¹ Ð¼Ð¾Ð¼ÐµÐ½Ñ Ð¸ Ð¿ÑÐ¾Ð¸Ð·Ð²ÐµÑÑÐ¸ ÑÑÐ¿ÐµÑÐ½Ð¾Ðµ ÑÐ°ÑÑÐ¸ÑÐµÐ½Ð¸Ðµ Ð² Ð½ÐµÐ´Ð°Ð»ÐµÐºÐ¾Ð¼ Ð±ÑÐ´ÑÑÐµÐ¼.
description: This work is devoted to evaluation of efficiency of resource potential utilization and development strategy of the company. The main information for the performance of the tasks was received from the real estate agency of LLC "Monolit Plus." The company received the following information: financial and accounting statements, organizational data.
As a result of the analysis of the enterprise we found out its financial condition, efficiency of use of resource potential. On the basis of the obtained data we have drawn up a new development strategy, which allows to improve the activity of the company at the moment and to carry out successful expansion in the near future.
Thermalisation for Small Random Perturbations of Dynamical Systems
Creators: name: Barrera, Gerardo
name: Jara, Milton
Publisher: name: arXiv
Year: 2015
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: J.2
subject: 60H25 (Primary) 37D99 (Secondary)

description: We consider an ordinary differential equation with a unique hyperbolic attractor at the origin, to which we add a small random perturbation. It is known that under general conditions, the solution of this stochastic differential equation converges exponentially fast to an equilibrium distribution. We show that the convergence occurs abruptly: in a time window of small size compared to the natural time scale of the process, the distance to equilibrium drops from its maximal possible value to near zero, and only after this time window the convergence is exponentially fast. This is what is known as the cut-off phenomenon in the context of Markov chains of increasing complexity. In addition, we are able to give general conditions to decide whether the distance to equilibrium converges in this time window to a universal function, a fact known as profile cut-off.
description: The title was updated. Annals of Applied Probability 2020
On the structure and probabilistic interpretation of Askey-Wilson densities and polynomials with complex parameters
Creators: name: Szabłowski, Paweł J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 33D45, 05A30 (Primary) 62H05, 60E05 (Secondary)

description: We give equivalent forms of the Askey-Wilson polynomials expressing them with the help of the Al-Salam-Chihara polynomials. After restricting parameters of the Askey-Wilson polynomials to complex conjugate pairs we expand the Askey-Wilson weight function in the series similar to the Poisson-Mehler expansion formula and give its probabilistic interpretation. In particular this result can be used to calculate explicit forms of 'q-Hermite' moments of the Askey-Wilson density, hence enabling calculation of all moments of the Askey-Wilson density. On the way (by setting certain parameter q to 0) we get some formulae useful in the rapidly developing so called 'free probability'.
The QCD Running Coupling
Creators: name: Deur, A.
name: Brodsky, S. J.
name: de Teramond, G. F.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We review the present knowledge for $α_s$, the fundamental coupling underlying the interactions of quarks and gluons in QCD. The dependence of $α_s(Q^2)$ on momentum transfer $Q$ encodes the underlying dynamics of hadron physics -from color confinement in the infrared domain to asymptotic freedom at short distances. We review constraints on $α_s(Q^2)$ at high $Q^2$, as predicted by perturbative QCD, and its analytic behavior at small $Q^2$, based on models of nonperturbative dynamics. In the introductory part of this review, we explain the phenomenological meaning of $α_s$, the reason for its running, and the challenges facing a complete understanding of its analytic behavior in the infrared domain. In the second, more technical, part of the review, we discuss the behavior of $α_s(Q^2)$ in the high $Q^2$ domain of QCD. We review how $α_s$ is defined, including its renormalization scheme dependence, the definition of its renormalization scale, the utility of effective charges, as well as Commensurate Scale Relations which connect the various definitions of $α_s$ without renormalization-scale ambiguity. We also report recent measurements and theoretical analyses which have led to precise QCD predictions at high energy. In the last part of the review, we discuss the challenge of understanding the analytic behavior $α_s(Q^2)$ in the infrared domain. We also review important methods for computing $α_s$, including lattice QCD, the Schwinger-Dyson equations, the Gribov-Zwanziger analysis and light-front holographic QCD. After describing these approaches and enumerating their conflicting predictions, we discuss the origin of these discrepancies and how to remedy them. Our aim is not only to review the advances in this difficult area, but also to suggest what could be an optimal definition of $α_s$ in order to bring better unity to the subject.
description: Invited review article for Progress in Particle and Nuclear Physics. 195 pages, 18 figures. V3: Minor corrections and addenda compared to V1 and V2. V4: typo fixed in Eq. (3.21). V5: corrected a sign typo in Eqs. (3.27, 3.32, 3.33 and 3.40)
Rational solutions of the Sasano systems of types $B_4^{(1)},$ $D_4^{(1)}$ and $D_5^{(2)}$
Creators: name: Matsuda, Kazuhide
Publisher: name: arXiv
Year: 2010
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: We classify the rational solutions of the Sasano systems of types $B_4^{(1)},$ $D_4^{(1)}$ and $D_5^{(2)},$ which are all given by the coupled $P_{\rm III}$ systems and have the affine Weyl group symmetries of types $B_4^{(1)},$ $D_4^{(1)}$ and $D_5^{(2)}.$ The rational solutions are classified as one type by the Bäcklund transformation groups.
description: arXiv admin note: substantial text overlap with arXiv:1103.4906, arXiv:1103.4906. See the Remark of page 5 in Introduction
Il ruolo del docente nel favorire il benessere tramite alimentazione sana e pratica sportiva
Creators: name: Ghidoni, Marzio
Publisher: name: Scuola Universitaria della Svizzera Italiana (SUPSI)
Year: 2017

description: Che ruolo può avere un docente di scuola media per favorire uno sviluppo psicofisico sano nei preadolescenti? Sensibilizzando gli allievi su due temi quali l’alimentazione e la pratica di attività fisica, essi prendono coscienza dell’importanza di questi due temi per favorire il proprio benessere? Questo lavoro di ricerca aveva due obiettivi: il primo era indagare e quantificare quanto gli allievi che frequentano la prima media fossero consapevoli del ruolo che ha l’alimentazione e la pratica di movimento sul proprio benessere. Il secondo obiettivo era quello di condurre due percorsi didattici e capire se il ruolo del docente, la metodologia usata e i contenuti delle lezioni abbiano maggiormente sensibilizzato gli allievi sui temi dell’alimentazione sana e la pratica sportiva in favore del benessere. Sono state messe in atto delle modalità di raccolta dati basate su un approccio di tipo quantitativoqualitativo, attraverso un questionario semi-strutturato. Il questionario è stato appositamente costruito per verificare le preconoscenze degli allievi. Sono poi stati proposti due interventi didattici effettuati attraverso quattro attività pratiche e motorie sulle tematiche dell’alimentazione e della pratica di movimento. In seguito è stato sottoposto un questionario comprendente delle domande aperte riguardanti i temi svolti in classe. Dalle analisi dei dati raccolti prima degli interventi didattici e le risposte che gli allievi hanno dato dopo l’intervento didattico da parte del docente, si è osservato che gli allievi hanno assimilato una maggior consapevolezza sul tema del benessere e che questa sensibilizzazione auspicabilmente consentirà di prendere scelte più consapevoli in futuro. Materia: educazione fisica
Salem-Zygmund Inequality for locally sub-Gaussian random variables, random trigonometric polynomials, and random circulant matrices
Creators: name: Barrera, Gerardo
name: Manrique, Paulo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60G99, 12D10, 11CXX, 30C15

description: In this manuscript we give an extension of the classic Salem--Zygmund inequality for locally sub-Gaussian random variables. As an application, the concentration of the roots of a Kac polynomial is studied, which is the main contribution of this manuscript. More precisely, we assume the existence of the moment generating function for the iid random coefficients for the Kac polynomial and prove that there exists an annulus of width \[O(n^{-2}(\log n)^{-1/2-γ}), \quad γ>1/2\] around the unit circle that does not contain roots with high probability. As an another application, we show that the smallest singular value of a random circulant matrix is at least $n^{-ρ}$, $ρ\in(0,1/4)$ with probability $1-O(n^{-2ρ})$.
description: Typos were corrected. 20 pages
title: Exploring the Dynamics of Financial Independence Among Seasonal Female Agricultural Workers: A Study of Social Representations
title: A Study of Social Representations
titleType: AlternativeTitle
Creators: name: Science Step Journal
Publisher: name: Science Step Journal
Year: 2025
Subjects: subject: Public finance
subject: Community finance
subject: Monetary and finances

description: This exploratory study focuses on the dynamics of financial independence among female seasonal agricultural workers, based on semi-structured interviews conducted between November 2020 and February 2021, in the province of Fquih Ben Salah. The primary objective is to understand how their social representations and practices influence their experience of financial independence in a rural context. Through thematic analysis, we identify recurring themes in the participants' narratives and the key elements that shape their social representation.