cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Functional and molecular characterization of ethylene responsive factor genes involved in grape ripening
Creators: name: Dal Ri, Antonio <1981>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2011
Subjects: AGR/03 Arboricoltura generale e coltivazioni arboree

description: Grape berry is considered a non climacteric fruit, but there are some evidences that ethylene plays a role in the control of berry ripening. 
This PhD thesis aimed to give insights in the role of ethylene and ethylene-related genes in the regulation of grape berry ripening. 
During this study a small increase in ethylene concentration one week before véraison has been measured in Vitis vinifera L. ‘Pinot Noir’ grapes confirming previous findings in ‘Cabernet Sauvignon’.
In addition, ethylene-related genes have been identified in the grapevine genome sequence. Similarly to other species, biosynthesis and ethylene receptor genes are present in grapevine as multi-gene families and their expression appeared tissue or developmental specific. All the other elements of the ethylene signal transduction cascade were also identified in the grape genome. 
Among them, there were ethylene response factors (ERF) which modulate the transcription of many effector genes in response to ethylene. In this study seven grapevine ERFs have been characterized and they showed tissue and berry development specific expression profiles. Two sequences, VvERF045 and VvERF063, seemed likely involved in berry ripening control due to their expression profiles and their sequence annotation. VvERF045 was induced before véraison and was specific of the ripe berry, by sequence similarity it was likely a transcription activator. VvERF063 displayed high sequence similarity to repressors of transcription and its expression, very high in green berries, was lowest at véraison and during ripening.
To functionally characterize VvERF045 and VvERF063, a stable transformation strategy was chosen. Both sequences were cloned in vectors for over-expression and silencing and transferred in grape by Agrobacterium-mediated or biolistic-mediated gene transfer.
In vitro, transgenic VvERF045 over-expressing plants displayed an epinastic phenotype whose extent was correlated to the transgene expression level. Four pathogen stress response genes were significantly induced in the transgenic plants, suggesting a putative function of VvERF045 in biotic stress defense during berry ripening.
Further molecular analysis on the transgenic plants will help in identifying the actual VvERF045 target genes and together with the phenotypic characterization of the adult transgenic plants, will allow to extensively define the role of VvERF045 in berry ripening.
On the Characteristic Isolation of Compact Subgroups within Loose Groups of Galaxies
Creators: name: Pillastrini, Giovanni C. Baiesi
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We have explored the hypothesis that compact subgroups lying within dense environments as loose groups of galaxies, at a certain stage of their evolutionary history, could be influenced by the action of the tidal field induced by the gravitational potential of the whole system. We argue that empty rings observed in projection around many compact subgroups of galaxies embedded in larger hosts originate around the spherical surface drawn by the tidal radius where the internal binding force of the compact subgroup balances the external tidal force of the whole system. This effect would torn apart member galaxies situated in this region determining a marked isolation of the subgroups from the rest of the host groups. If so, subsequent evolution of these subgroups should not be affected by external influences as the infall of new surrounding galaxies on them. Following this idea we have developed a statistical method of investigation and performed an application to show evidences of such effect studying a loose group of galaxies hosting a compact group in its central region. The system UZC 578 / HCG 68 seems to be a fair example of such hypothesized process.
description: 12 pages, match version accepted for publication in TOAJ, corrected typos
Optical and dielectric properties of MoO$_3$ nanosheets for van der Waals heterostructures
Creators: name: Andres-Penares, Daniel
name: Brotons-Gisbert, Mauro
name: Bonato, Cristian
name: Sánchez-Royo, Juan F.
name: Gerardot, Brian D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Two-dimensional (2D) insulators are a key element in the design and fabrication of van der Waals heterostructures. They are vital as transparent dielectric spacers whose thickness can influence both the photonic, electronic, and optoelectronic properties of 2D devices. Simultaneously, they provide protection of the active layers in the heterostructure. For these critical roles, hexagonal Boron Nitride (hBN) is the dominant choice due to its large bandgap, atomic flatness, low defect density, and encapsulation properties. However, the broad catalogue of 2D insulators offers exciting opportunities to replace hBN in certain applications that require transparent thin layers with additional optical degrees of freedom. Here we investigate the potential of single-crystalline Molybdenum Oxide (MoO$_3$) as an alternative 2D insulator for the design of nanodevices that require precise adjustment of the light polarization at the nanometer scale. First, we measure the wavelength-dependent refractive indices of MoO$_3$ along its three main crystal axes and determine the in-plane and out-of-plane anisotropy of its optical properties. We find the birefringence in MoO$_3$ nanosheets compares favorably with other 2D materials that exhibit strong birefringence, such as black phosphorus, ReS$_2$, or ReSe$_2$, in particular in the visible spectral range where MoO$_3$ has the unique advantage of transparency. Finally, we demonstrate the suitability of MoO$_3$ for dielectric encapsulation by reporting linewidth narrowing and reduced inhomogeneous broadening of 2D excitons and optically active quantum emitters, respectively, in a prototypical monolayer transition-metal dichalcogenide semiconductor. These results show the potential of MoO$_3$ as a 2D dielectric layer for manipulation of the light polarization in vertical 2D heterostructures.
description: 7 pages, 5 figures
The incomplete ionization of substitutional dopants in Silicon Carbide
Creators: name: Scaburri, Raffaele <1974>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2011
Subjects: ING-IND/22 Scienza e tecnologia dei materiali

description: This thesis analyzes theoretically and computationally the phenomenon of partial ionization of the substitutional dopants in Silicon Carbide at thermal equilibrium. It is based on the solution of the charge neutrality equation and takes into account the following phenomena: several energy levels in the bandgap; Fermi-Dirac statistics for free carriers; screening effects on the dopant ionization energies; the formation of impurity bands.  A self-consistent model and a corresponding simulation software have been realized.  A preliminary comparison of our calculations with existing experimental results is carried out.
Limits on a muon flux from Kaluza-Klein dark matter annihilations in the Sun from the IceCube 22-string detector
Creators: name: The IceCube Collaboration
name: Abbasi, R.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: A search for muon neutrinos from Kaluza-Klein dark matter annihilations in the Sun has been performed with the 22-string configuration of the IceCube neutrino detector using data collected in 104.3 days of live-time in 2007. No excess over the expected atmospheric background has been observed. Upper limits have been obtained on the annihilation rate of captured lightest Kaluza-Klein particle (LKP) WIMPs in the Sun and converted to limits on the LKP-proton cross-sections for LKP masses in the range 250 -- 3000 GeV. These results are the most stringent limits to date on LKP annihilation in the Sun.
description: 6 pages, 5 figures
ENHANCED COMMUNITY DETECTION IN SOCIAL NETWORKS USING UNNORMALIZED SPECTRAL CLUSTERING ENSEMBLED WITH K-NEAREST NEIGHBORS ALGORITHM
Creators: name: KURAPATI SRAVANTHI
Publisher: name: Zenodo
Year: 2023
Subjects: Community Detection, Social Networks, Spectral Clustering, K-Nearest Neighbours.

description: Abstract

The study of social networks has received a lot of attention lately. One way to represent social networks is via a graph. Every person is referred to as a node and the links that connect them as edges when analyzing social networks. In real-world network graphs, it is challenging to identify communities and describe the relationships between items and persons. There are several well-established techniques for finding the connected nodes that lead to the identification of communities. This research integrates the k-nearest neighbours (KNN) algorithm with unnormalized spectral clustering to provide a unique approach for community recognition in social networks. The method makes use of KNN for local neighbourhood refining and spectral clustering for global structure analysis. The primary objective of the algorithm proposed in this study is to identify and eliminate any noisy nodes from the identified communities, hence enhancing the quality of the identified communities.  Experimental results on synthetic and real-world datasets demonstrate the method's effectiveness in accurately identifying community structures.
Design and Setup of a New HPGe Detector Based Body Counter Capable of Detecting Also Low Energy Photon Emitters
Creators: name: Marzocchi, Olaf <1982>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2011
Subjects: ING-IND/18 Fisica dei reattori nucleari

description: The present work describes the development of a new body-counter system based on HPGe detectors and installed at IVM of KIT. The goal, achieved, was the improvement of the ability to detect internal contaminations in the human body, especially the ones concerning low-energy emitters and multiple nuclides. The development of the system started with the characterisation of detectors purchased for this specific task, with the optimisation of the different desired measurement configurations following and ending with the installation and check of the results. A new software has been developed to handle the new detectors.
description: Il presente lavoro descrive lo sviluppo del nuovo sistema di conteggio basato su rivelatori HPGe installato presso l'IVM situato al KIT. L'obiettivo, raggiunto, era quello di migliorare la capacità di rilevazione di contaminazioni interne del corpo umano, specialmente di quelle inerenti basse energie e quelle contenenti nuclidi multipli. La progettazione del sistema è stata effettuata ex-novo, a partire dalla caratterizzazione dei rivelatori acquistati per l'uopo, proseguendo con l'ottimizzazione delle diverse configurazioni di misura richieste e terminando con l'installazione e la verifica dei risultati. Parallelamente è stato sviluppato un software per gestire i nuovi rivelatori.
Co-Delivery of Doxorubicin and Chloroquine by Polyglycerol Functionalized MoS2 Nanosheets for Efficient Multidrug-Resistant Cancer Therapy
Creators: name: Xu, Shaohui
name: Zhong, Yinan
name: Nie, Chuanxiong
name: Pan, Yuanwei
name: Adeli, Mohsen
name: Haag, Rainer
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: 2D MoS2
subject: anticancer drug delivery
subject: chloroquine
subject: hyperbranched polyglycerol
subject: multidrug-resistant cancer
subject: 500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::570 Biowissenschaften; Biologie

description: 2D MoS2 has shown a great potential in biomedical applications, due to its superior loading capacity, photothermal property, and biodegradation. In this work, polyglycerol functionalized MoS2 nanosheets with photothermal and pH dual-stimuli responsive properties are used for the co-delivery of doxorubicin and chloroquine and treatment of multidrug-resistant HeLa (HeLa-R) cells. The polyglycerol functionalized MoS2 nanosheets with 80 nm average size show a high biocompatibility and loading efficiency (≈90%) for both drugs. The release of drugs from the nanosheets at pH 5.5 is significantly promoted by laser irradiation leading to efficient destruction of incubated HeLa-R cells. In vitro evaluation shows that the designed nanoplatform has a high ability to kill HeLa-R cells. Confocal experiments demonstrate that the synthesized drug delivery system enhances the cellular uptake of DOX via folic acid targeting ligand. Taking advantage of the combined properties including biocompatibility and targeting ability as well as high loading capacity and photothermal release, this multifunctional nanosystem is a promising candidate for anticancer therapy.
Latvian immigration to São Paulo, Brazil : 1890-1970 immigration and assimilation
Creators: name: Cornford, Ieva Mara Megnis
Publisher: name: University of British Columbia
Year: 2010

description: Documentation of the extent of Latvian immigration to Brazil and to the urban centre of São Paulo between 1890 and 1970 and evidence of the degree of Latvian-Brazilian assimilation are non-existent. This thesis fulfills a need for investigating the displacement of the Latvian ethnic society into an unfamiliar geographical, social and cultural Brazilian environment. Both Latvia and Brazil are discussed in terms of geography and climate, origins of civilization and language, cultural heritage and social structure. The cosmopolitan nature of São Paulo is introduced. The reasons for Latvian migration and statistical information regarding Brazilian immigrant policy and numbers of immigrants are derived from census data, church records and archival material. A Lutheran church record case study is also documented as supporting material, and estimates are established from a wide variety of reported statistical information concerning Latvians in Brazil. Latvian religious subdivisions form the basis for tracing the São Paulo community development and extent of Latvian-Brazilian assimilation. General aspects of assimilation in Brazil are applied to the Latvian community with detailed discussion of cultural and social integration including intermarriage and language, customs and environment. Conclusions are drawn from the extent of Latvian influence within the Brazilian society and the reciprocal but stronger Brazilian contribution to the Latvian heritage.
A tuple space implementation for large-scale infrastructures
Creators: name: Capizzi, Sirio <1980>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2008
Subjects: INF/01 Informatica

description: Coordinating activities in a distributed system is an open research topic. Several models have been
proposed to achieve this purpose such as message passing, publish/subscribe, workflows or tuple
spaces. We have focused on the latter model, trying to overcome some of its disadvantages. In
particular we have applied spatial database techniques to tuple spaces in order to increase their
performance when handling a large number of tuples. Moreover, we have studied how structured
peer to peer approaches can be applied to better distribute tuples on large networks. Using some of
these result, we have developed a tuple space implementation for the Globus Toolkit that can be
used by Grid applications as a coordination service. The development of such a service has been
quite challenging due to the limitations imposed by XML serialization that have heavily influenced
its design. Nevertheless, we were able to complete its implementation and use it to implement two
different types of test applications: a completely parallelizable one and a plasma simulation that is
not completely parallelizable. Using this last application we have compared the performance of our
service against MPI. Finally, we have developed and tested a simple workflow in order to show the
versatility of our service.
Implications of SGLT Inhibition on Redox Signalling in Atrial Fibrillation
Creators: name: Bode, David
name: Semmler, Lukas
name: Oeing, Christian U.
name: Alogna, Alessio
name: Schiattarella, Gabriele G.
name: Pieske, Burkert M.
name: Heinzel, Frank R.
name: Hohendanner, Felix
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2021
Subjects: subject: atrial fibrillation
subject: heart failure
subject: SGLT inhibition
subject: cardiomyocytes
subject: redox signalling
subject: reactive oxygen species
subject: oxidative stress
subject: mitochondrial function
subject: Ca2+ homeostasis
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::610 Medizin und Gesundheit

description: Atrial fibrillation (AF) is the most common sustained (atrial) arrhythmia, a considerable global health burden and often associated with heart failure. Perturbations of redox signalling in cardiomyocytes provide a cellular substrate for the manifestation and maintenance of atrial arrhythmias. Several clinical trials have shown that treatment with sodium-glucose linked transporter inhibitors (SGLTi) improves mortality and hospitalisation in heart failure patients independent of the presence of diabetes. Post hoc analysis of the DECLARE-TIMI 58 trial showed a 19% reduction in AF in patients with diabetes mellitus (hazard ratio, 0.81 (95% confidence interval: 0.68-0.95), n = 17.160) upon treatment with SGLTi, regardless of pre-existing AF or heart failure and independent from blood pressure or renal function. Accordingly, ongoing experimental work suggests that SGLTi not only positively impact heart failure but also counteract cellular ROS production in cardiomyocytes, thereby potentially altering atrial remodelling and reducing AF burden. In this article, we review recent studies investigating the effect of SGLTi on cellular processes closely interlinked with redox balance and their potential effects on the onset and progression of AF. Despite promising insight into SGLTi effect on Ca2+ cycling, Na+ balance, inflammatory and fibrotic signalling, mitochondrial function and energy balance and their potential effect on AF, the data are not yet conclusive and the importance of individual pathways for human AF remains to be established. Lastly, an overview of clinical studies investigating SGLTi in the context of AF is provided.
Argumentation and artifacts for intelligent multi-agent systems
Creators: name: Oliva, Enrico <1976>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2008
Subjects: ING-INF/05 Sistemi di elaborazione delle informazioni

description: Reasoning under uncertainty is a human capacity that in software system
is necessary and often hidden. Argumentation theory and logic make
explicit non-monotonic information in order to enable automatic forms of
reasoning under uncertainty. In human organization Distributed Cognition
and Activity Theory explain how artifacts are fundamental in all cognitive
process. Then, in this thesis we search to understand the use of cognitive
artifacts in an new argumentation framework for an agent-based artificial
society.
Development of high affinity broadly reactive aptamers for spike protein of multiple SARS-CoV-2 variants.
Creators: name: Le, Thao T
name: Benton, Donald J
name: Wrobel, Antoni G
name: Gamblin, Steven J
Publisher: name: The Francis Crick Institute
Year: 2023
Subjects: Structural Biology & Biophysics
Cell Cycle & Chromosomes
Chemical Biology & High Throughput
Infectious Disease
Metabolism

description: We have developed broadly reactive aptamers against multiple variants by alternating the target between spike proteins from different SARS-CoV-2 variants during the selection process. In this process we have developed aptamers which can recognise all variants, from the original wild-type 'Wuhan' strain to Omicron, with high affinity (Kd values in the pM range).
UNDERSTANDING GREEN PURCHASE INTENTION TOWARDS ECO-FRIENDLY CLOTHING AMONG UNIVERSITY STUDENTS IN INDONESIA AND MALAYSIA
Creators: name: Denti Kusuma Wardani
name: Adiza Alhassan Musah
name: Karnowahadi
Publisher: name: Zenodo
Year: 2024
Subjects: Green Purchase Intention, Eco-friendly Clothing, Social Media Marketing, Theory of Planned Behavior.

description: Abstract

The objective of this study is to analyze the impact of attitude, subjective norms, perceived behavioral control, and social media marketing on the intentions of university students in Indonesia and Malaysia to purchase eco-friendly clothes. In addition, it aims to determine the influence of subjective norms on the relationship between attitude and intention to make environmentally-friendly purchases, as well as the relationship between perceived behavioral control and intention to make environmentally-friendly purchases. A quantitative study was conducted, collecting empirical data from a sample of 228 Indonesian and 152 Malaysian university students. The process of analyzing the data included the use of SPSS 25 for conducting descriptive statistics and SmartPLS for performing structural equation modeling (SEM). SmartPLS 4.0, a software tool for structural equation modeling (SEM), processed the data primarily for hypothesis testing. Confirmatory factor analysis and Cronbach's alpha, both well-established in previous research, assessed the reliability and validity of the scales used in this study. The study applied structural equation modeling (SEM) to examine the model and hypothesis. The findings indicate that attitude, perceived behavioral control, subjective standards, and social media marketing have a substantial impact on individuals' intentions to make green purchases. Attitude is the first determinant, followed by social media marketing as the second key component. The presence of subjective norms did not have a significant impact on the correlations between attitude and perceived behavioral control regarding the intention to make green purchases. The study demonstrates that students possess a robust environmental consciousness, and the utilization of social media marketing proves to be highly efficient in promoting environmentally friendly products. This study proposes that attitude and social media marketing play a vital role in influencing individuals' intentions to make environmentally friendly purchases and encouraging sustainable consumer behavior.
Reinforcement Learning for Mixed Autonomy Intersections
Creators: name: Yan, Zhongxia
name: Wu, Cathy
Publisher: name: arXiv
Year: 2021
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: Multiagent Systems (cs.MA)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We propose a model-free reinforcement learning method for controlling mixed autonomy traffic in simulated traffic networks with through-traffic-only two-way and four-way intersections. Our method utilizes multi-agent policy decomposition which allows decentralized control based on local observations for an arbitrary number of controlled vehicles. We demonstrate that, even without reward shaping, reinforcement learning learns to coordinate the vehicles to exhibit traffic signal-like behaviors, achieving near-optimal throughput with 33-50% controlled vehicles. With the help of multi-task learning and transfer learning, we show that this behavior generalizes across inflow rates and size of the traffic network. Our code, models, and videos of results are available at https://github.com/ZhongxiaYan/mixed_autonomy_intersections.
description: 7 pages, 6 figures, ITSC 2021, 2021 IEEE International Conference on Intelligent Transportation Systems (ITSC)
Mass determination in sequential particle decay chains
Creators: name: Webber, Bryan
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A simple method is proposed for determining the masses of new particles in collider events containing a pair of decay chains (not necessarily identical) of the form Z -> Y+1, Y -> X+2, X -> N+3, where 1,2 and 3 are visible but N is not. Initial study of a possible supersymmetric case suggests that the method can determine the four unknown masses in effectively identical chains with good accuracy from samples of a few tens of events.
description: 11 pages, 3 figures. Mention of application to shorter decay chains and references added
Feasibility Conditions for Interference Alignment
Creators: name: Yetis, Cenk M.
name: Jafar, Syed A.
name: Kayran, Ahmet H.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Information Theory (cs.IT)
subject: Hardware Architecture (cs.AR)
subject: FOS: Computer and information sciences

description: The degrees of freedom of MIMO interference networks with constant channel coefficients are not known in general. Determining the feasibility of a linear interference alignment solution is a key step toward solving this open problem. Our approach in this paper is to view the alignment problem as a system of bilinear equations and determine its solvability by comparing the number of equations and the number of variables. To this end, we divide interference alignment problems into two classes - proper and improper. An interference alignment problem is called proper if the number of equations does not exceed the number of variables. Otherwise, it is called improper. Examples are presented to support the intuition that for generic channel matrices, proper systems are almost surely feasible and improper systems are almost surely infeasible.
description: 6 pages. Submitted to IEEE Globecom March 31 2009
A Comparison of Model-Free and Model Predictive Control for Price Responsive Water Heaters
Creators: name: Biagioni, David J.
name: Zhang, Xiangyu
name: Graf, Peter
name: Sigler, Devon
name: Jones, Wesley
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: We present a careful comparison of two model-free control algorithms, Evolution Strategies (ES) and Proximal Policy Optimization (PPO), with receding horizon model predictive control (MPC) for operating simulated, price responsive water heaters. Four MPC variants are considered: a one-shot controller with perfect forecasting yielding optimal control; a limited-horizon controller with perfect forecasting; a mean forecasting-based controller; and a two-stage stochastic programming controller using historical scenarios. In all cases, the MPC model for water temperature and electricity price are exact; only water demand is uncertain. For comparison, both ES and PPO learn neural network-based policies by directly interacting with the simulated environment under the same scenarios used by MPC. All methods are then evaluated on a separate one-week continuation of the demand time series. We demonstrate that optimal control for this problem is challenging, requiring more than 8-hour lookahead for MPC with perfect forecasting to attain the minimum cost. Despite this challenge, both ES and PPO learn good general purpose policies that outperform mean forecast and two-stage stochastic MPC controllers in terms of average cost and are more than two orders of magnitude faster at computing actions. We show that ES in particular can leverage parallelism to learn a policy in under 90 seconds using 1150 CPU cores.
description: All authors are with the Computational Science Center at the National Renewable Energy Laboratory. Corresponding author: David Biagioni (dave.biagioni@nrel.gov)
Desaturation effects of pyrite–sand mixtures on induced polarization signals
Creators: name: Martin, Tina
name: Weller, Andreas
name: Behling, Laura
Publisher: name: Freie Universität Berlin
Year: 2022
Subjects: subject: Electrical properties
subject: Hydrogeophysics
subject: Electromagnetic theory
subject: 500 Naturwissenschaften und Mathematik::550 Geowissenschaften, Geologie::550 Geowissenschaften

description: Induced polarization (IP) is an acknowledged method in ore exploration and can be applied to evaluate the metal content in dumps containing the residues of ore processing facilities. Existing models explain the relationships between ore content and grain size of the ore particles with IP parameters. However, the models assume full water saturation of the ore containing samples, which is often not the case in field conditions at dump sites. Hence, our study investigates the effect of desaturation on the resulting IP signal. We used six different sand–pyrite mixtures with varying amount and grain sizes of the pyrite particles. Evaporative drying desaturated the samples. Complex conductivity spectra were recorded in the frequency range between 0.02 and 1000 Hz at certain saturation levels. The resulting spectra indicate an decrease of the conductivity amplitude with progressing desaturation. This effect agrees with the second empirical Archie equation. The saturation exponent of the conductivity amplitude shows values slightly larger than one. The measured spectra were processed by a Debye decomposition. We observe a nearly constant total chargeability during desaturation. This finding is in agreement with existing models that relate the total chargeability to the metal content in the sample. However, the mean relaxation time decreases remarkably during the drying process, whereas the normalized relaxation time, which considers the ratio between the mean relaxation time and the resistivity of the embedding material, does not indicate any dependence on water saturation. This behaviour contradicts existing models that predict a decreasing relaxation time with increasing water salinity, which results from evaporative drying. In order to explain the observed effects, we propose a conceptional model that compares a mixture of pyrite particles in an embedding material (sand, water and air) with an electrical RC circuit. The pyrite grains behave as small condensers that are charged and discharged via the conductive background material. According to this simple physical model, the relaxation time is proportional to the resistivity of the embedding material. A resistivity increase while desaturation causes an increase of relaxation time as observed in our experiments. This conceptional model is in good agreement with other experiments that change the resistivity in the background material by varying water salinity or clay content. The capacitive behaviour of the dispersed particles is characterized by the normalized relaxation time that depends on the grain size and the volume content of the pyrite particles.
UNA REFLEXIÓN DE LA OBESIDAD DESDE LA PSICOLOGÍA
Creators: name: Gonzalez, Mariela
Publisher: name: figshare
Year: 2021
Subjects: subject: Clinical Psychology
subject: 170106 Health, Clinical and Counselling Psychology
subject: FOS: Psychology
subject: 111714 Mental Health
subject: FOS: Health sciences

description: La obesidad es considerada un problema médico y social, constituyendo un motivo de preocupación tanto colectivo como individual. Se asocia con distintos problemas de salud física y mental. Ello pone en relieve, la importancia del desarrollo de tratamientos que idealmente incluyan intervenciones multidisciplinarias. No obstante, las recaídas después de éstas, se está volviendo un campo de preocupación desde hace ya un tiempo. Ante esta realidad, es necesario clarificar el rol que tiene la psicoterapia en entender cómo la obesidad se desarrolla y se mantiene en el tiempo.
A new snowfall detection algorithm for high latitude regions based on a combination of active and passive sensors
Creators: name: Todini, Giulio <1979>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2008
Subjects: FIS/06 Fisica per il sistema terra e il mezzo circumterrestre

description: Precipitation retrieval over high latitudes, particularly snowfall retrieval over ice and snow, using
satellite-based passive microwave spectrometers, is currently an unsolved problem. The challenge
results from the large variability of microwave emissivity spectra for snow and ice surfaces, which
can mimic, to some degree, the spectral characteristics of snowfall.
This work focuses on the investigation of a new snowfall detection algorithm specific for high
latitude regions, based on a combination of active and passive sensors able to discriminate between
snowing and non snowing areas.
The space-borne Cloud Profiling Radar (on CloudSat), the Advanced Microwave Sensor units A
and B (on NOAA-16) and the infrared spectrometer MODIS (on AQUA) have been co-located for
365 days, from October 1st 2006 to September 30th, 2007.
CloudSat products have been used as truth to calibrate and validate all the proposed algorithms.
The methodological approach followed can be summarised into two different steps.
In a first step, an empirical search for a threshold, aimed at discriminating the case of no snow, was
performed, following Kongoli et al. [2003]. This single-channel approach has not produced
appropriate results, a more statistically sound approach was attempted.
Two different techniques, which allow to compute the probability above and below a Brightness
Temperature (BT) threshold, have been used on the available data. The first technique is based upon
a Logistic Distribution to represent the probability of Snow given the predictors. The second
technique, defined Bayesian Multivariate Binary Predictor (BMBP), is a fully Bayesian technique
not requiring any hypothesis on the shape of the probabilistic model (such as for instance the
Logistic), which only requires the estimation of the BT thresholds.
The results obtained show that both methods proposed are able to discriminate snowing and non
snowing condition over the Polar regions with a probability of correct detection larger than 0.5,
highlighting the importance of a multispectral approach.
Analytic results for the one-loop NMHV Hqqgg amplitude
Creators: name: Badger, Simon
name: Campbell, John M.
name: Ellis, R. Keith
name: Williams, Ciaran
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compute the one-loop amplitude for a Higgs boson, a quark-antiquark pair and a pair of gluons of negative helicity, i.e. for the next-to-maximally helicity violating (NMHV) case, A(H, qbar-, q+, g-, g-). The calculation is performed using an effective Lagrangian which is valid in the limit of very large top quark mass. As a result of this paper all amplitudes for the transition of a Higgs boson into 4 partons are now known analytically at one-loop order.
description: 21 pages, 1 figure
Ground and excited states of Li$^-$, Be$^-$ through a density-based approach
Creators: name: Roy, Amlan K.
name: Jalbout, Abraham F.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Density functional calculations are performed for ground [He]2s$^2$ $^1$S$^e$, and three metastable bound excited states, 1s2s2p$^2$ $^5$P$^e$, 1s2p$^3$ $^5$S$^o$, 1s2s2p3p $^5$P$^e$ of Li$^-$ and [He]2s2p$^2$ $^4$P$^e$, [He]2p$^3$ $^4$S$^o$, 1s2s2p$^3$ $^6$S$^o$ of Be$^-$ each. The work-function-based exchange potential is used, while the correlation effects are included by employing the Lee-Yang-Parr potential. The relevant nonrelativistic KS equation is solved by means of a generalized pseudospectral discretization scheme offering nonuniform and optimal spatial grid. Computed total energies, radial densities, selected density moments, as well as two transition wavelengths (1s2s2p$^2$ $^5$P$^e \to$1s2p$^3$ $^5$S$^o$ of Li$^-$, [He]2s2p$^2$ $^4$P$^e \to$ [He]2p$^3$ $^4$S$^o$ of Be$^-$) show reasonably good agreement with the available theoretical and experimental data. The term energies show an absolute deviation of 0.007--0.171% with the largest deviation being observed for the even-parity $^5$P state of Li$^-$. The transition wavelengths of Li$^-$, Be$^-$ are calculated within 0.891 and 0.438% of the experimental values. This offers a simple practical route towards accurate reliable calculation of excited states of anions within density functional theory.
description: 12 pages, 35 refs
Unraveling brain interactions in vision: The example of crowding
Creators: name: Jastrzębowska, Maya A.
name: Chicherov, Vitaly
name: Draganski, Bogdan
name: Herzog, Michael H.
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: Spatial contextual effects
subject: Crowding
subject: Brain imaging
subject: Effective connectivity
subject: Visual cortex
subject: 100 Philosophie und Psychologie::150 Psychologie::150 Psychologie

description: Crowding, the impairment of target discrimination in clutter, is the standard situation in vision. Traditionally, crowding is explained with (feedforward) models, in which only neighboring elements interact, leading to a “bottleneck” at the earliest stages of vision. It is with this implicit prior that most functional magnetic resonance imaging (fMRI) studies approach the identification of the “neural locus” of crowding, searching for the earliest visual area in which the blood-oxygenation-level-dependent (BOLD) signal is suppressed under crowded conditions. Using this classic approach, we replicated previous findings of crowding-related BOLD suppression starting in V2 and increasing up the visual hierarchy. Surprisingly, under conditions of uncrowding, in which adding flankers improves performance, the BOLD signal was further suppressed. This suggests an important role for top-down connections, which is in line with global models of crowding. To discriminate between various possible models, we used dynamic causal modeling (DCM). We show that recurrent interactions between all visual areas, including higher-level areas like V4 and the lateral occipital complex (LOC), are crucial in crowding and uncrowding. Our results explain the discrepancies in previous findings: in a recurrent visual hierarchy, the crowding effect can theoretically be detected at any stage. Beyond crowding, we demonstrate the need for models like DCM to understand the complex recurrent processing which most likely underlies human perception in general.
title: Ecografía Musculoesquelética del Miembro inferior: Rentabilidad Diagnòstica
Creators: name: Lopez Parra, Maria Dolores
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Trauma
subject: Education
subject: Cost-effectiveness
subject: Ultrasound
subject: Musculoskeletal soft tissue

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
1.- conocimiento de la anatomía y de la técnica de exploración ecográfica básica del miembro inferior,
fundamental para poder diferenciar hallazgos normales de patológicos.
2.- conocer cuales son las indicaciones de la ecografía y sobre todo...
Stock Portfolio Optimization Using a Deep Learning LSTM Model
Creators: name: Sen, Jaydip
name: Dutta, Abhishek
name: Mehtab, Sidra
Publisher: name: arXiv
Year: 2021
Subjects: subject: Portfolio Management (q-fin.PM)
subject: Machine Learning (cs.LG)
subject: FOS: Economics and business
subject: FOS: Computer and information sciences

description: Predicting future stock prices and their movement patterns is a complex problem. Hence, building a portfolio of capital assets using the predicted prices to achieve the optimization between its return and risk is an even more difficult task. This work has carried out an analysis of the time series of the historical prices of the top five stocks from the nine different sectors of the Indian stock market from January 1, 2016, to December 31, 2020. Optimum portfolios are built for each of these sectors. For predicting future stock prices, a long-and-short-term memory (LSTM) model is also designed and fine-tuned. After five months of the portfolio construction, the actual and the predicted returns and risks of each portfolio are computed. The predicted and the actual returns of each portfolio are found to be high, indicating the high precision of the LSTM model.
description: This is the accepted version of our paper in the international conference, IEEE Mysurucon'21, which was organized in Hassan, Karnataka, India from October 24, 2021 to October 25, 2021. The paper is 9 pages long, and it contains 19 figures and 19 tables. This is the preprint of the conference paper
RECEPTION AESTHETICS OF THE VALUE OF RELIGIOUS MODERATION IN MANUSCRIPTS SERAT CARUB KANDHA PUPUH DHANGDANGGULA
Creators: name: Anwar Firdousi
name: Gufron
name: Inayatur Rosyidah
name: Siti Fatimah
Publisher: name: Zenodo
Year: 2024
Subjects: Reception Aesthetics, Religious Moderation, Serat Carub Kandha, al-'Urf.

description: Abstract

The diversity of readers' responses to literary works is called reception aesthetics. This research aims to describe reader responses and reception aesthetics towards the values of religious moderation in the manuscript "Serat Carub Kandha Pupuh Dhangdanggula" by Prince Linggabuana using Hans Robert Jauss's theory. This research is descriptive qualitative research that employs the synchronic reception (experimental) method. Data were collected through observation techniques and literature review and analyzed using qualitative descriptive methods and reader criteria assessment. Hans Robert Jauss's reception aesthetics theory was utilized to analyze questionnaire data based on readers' experiences with the manuscript, horizon of expectations, aesthetic distance, the spirit of the times, literary series, and literary history in the manuscript "Serat Carub Kandha Pupuh Dhangdanggula." The results show that the noble values perceived by readers include the values of religious moderation al-‘Urf (respecting culture), with indicators of accommodative religious expression towards local culture in the ancestor's section who are descendants of Prabu Siliwangi. Their lineage reaches Queen Galuh (in the form of a spirit), and the descendants of Galuh are still respected even though they are not Muslim. They become ancestors who protect the land of Java, especially West Java. Local traditional arts become part of how the community honors their ancestors (descendants of Galuh).
title: Seguimiento radiológico tras metastasectomía pulmonar
Creators: name: Peñuela Ruiz, Laura
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Lung

description: Objetivos
Material y método
Resultados
Conclusiones
Bibliografía
description: Objetivos:
La descripción en TC de nódulos pulmonares en pacientes oncológicos sometidos a metastasectomía que correspondían a secuelas de la resección,
ha hecho plantearnos una revisión de pacientes sometidos a esta cirugía,
con estos objetivos:...
Limits of Learning about a Categorical Latent Variable under Prior Near-Ignorance
Creators: name: Piatti, Alberto
name: Zaffalon, Marco
name: Trojani, Fabio
name: Hutter, Marcus
Publisher: name: arXiv
Year: 2009
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: In this paper, we consider the coherent theory of (epistemic) uncertainty of Walley, in which beliefs are represented through sets of probability distributions, and we focus on the problem of modeling prior ignorance about a categorical random variable. In this setting, it is a known result that a state of prior ignorance is not compatible with learning. To overcome this problem, another state of beliefs, called \emph{near-ignorance}, has been proposed. Near-ignorance resembles ignorance very closely, by satisfying some principles that can arguably be regarded as necessary in a state of ignorance, and allows learning to take place. What this paper does, is to provide new and substantial evidence that also near-ignorance cannot be really regarded as a way out of the problem of starting statistical inference in conditions of very weak beliefs. The key to this result is focusing on a setting characterized by a variable of interest that is \emph{latent}. We argue that such a setting is by far the most common case in practice, and we provide, for the case of categorical latent variables (and general \emph{manifest} variables) a condition that, if satisfied, prevents learning to take place under prior near-ignorance. This condition is shown to be easily satisfied even in the most common statistical problems. We regard these results as a strong form of evidence against the possibility to adopt a condition of prior near-ignorance in real statistical problems.
description: 27 LaTeX pages
An efficient low-cost real-time brain computer interface system based on SSVEP
Creators: name: Shan Leow, Ruen
name: Moghavvemi, M
name: Ibrahim, Fatimah
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 400305
subject: Biomedical instrumentation
classificationCode: 400308
subject: Medical devices
classificationCode: 400309
subject: Neural engineering
classificationCode: 400310
subject: Rehabilitation engineering
classificationCode: 400304
subject: Biomedical imaging
classificationCode: 400399
subject: Biomedical engineering not elsewhere classified

description: This study delineates the comprehensive development and implementation of a real-time Brain-Computer Interface (BCI) system founded upon the detection of Steady-State Visual Evoked Potential (SSVEP). The architecture of the system encompasses multifaceted components, including a frequency-programmable visual stimulator, EEG-band amplifier, filtering apparatus, a 16-bit data acquisition card, and intricate signal processing and classification algorithms.Central to the experimental protocol, three distinct visual stimuli were meticulously configured to flicker at diverse frequencies, strategically presented to the subjects. The implemented system adeptly discerned and classified the specific target upon which the subjects focused their attention, showcasing the system's precision in identifying the intended target amidst the visual stimuli ensemble. To gauge the system's efficacy and performance, a comprehensive experimental assessment was conducted involving ten healthy subjects. The subjects participated in trials designed to evaluate the system's accuracy in correctly identifying the intended targets. Through meticulous data analysis and processing, the designed BCI system exhibited an impressive average detection accuracy rate of 86.15% across the conducted experiments.This robust experimental validation signifies the system's proficiency in accurately interpreting and categorizing SSVEP responses induced by varying visual stimuli frequencies. The achieved accuracy rate underscores the system's potential utility and reliability in real-time BCI applications, presenting a promising avenue for further advancements and practical implementations in neurotechnology and human-computer interfacing paradigms.