cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Flow map parameterization methods for invariant tori in Hamiltonian systems
Creators: name: Haro, Alex
name: Mondelo, Josep-Maria
Publisher: name: arXiv
Year: 2021
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: The goal of this paper is to present a methodology for the computation of invariant tori in Hamiltonian systems combining flow map methods, parameterization methods, and symplectic geometry. While flow map methods reduce the dimension of the tori to be computed by one (avoiding Poincare maps), parameterization methods reduce the cost of a single step of the derived Newton-like method to be proportional to the cost of a FFT. Symplectic properties lead to some magic cancellations that make the methods work. The multiple shooting version of the methods are applied to the computation of invariant tori and their invariant bundles around librational equilibrium points of the Restricted Three Body Problem. The invariant bundles are the first order approximations of the corresponding invariant manifolds, commonly known as the whiskers, which are very important in the dynamical organization and have important applications in space mission design.
The Herschel/PACS 2560 bolometers imaging camera
Creators: name: Billot, Nicolas
name: Agnese, Patrick
name: Augueres, Jean-Louis
name: Beguin, Alain
name: Bouere, Andre
name: Boulade, Olivier
name: Cara, Christophe
name: Cloue, Christelle
name: Doumayrou, Eric
name: Duband, Lionel
name: Horeau, Benoit
name: Mer, Isabelle Le
name: Pennec, Jean Le
name: Martignac, Jerome
name: Okumura, Koryo
name: Reveret, Vincent
name: Sauvage, Marc
name: Simoens, Francois
name: Vigroux, Laurent
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The development program of the flight model imaging camera for the PACS instrument on-board the Herschel spacecraft is nearing completion. This camera has two channels covering the 60 to 210 microns wavelength range. The focal plane of the short wavelength channel is made of a mosaic of 2x4 3-sides buttable bolometer arrays (16x16 pixels each) for a total of 2048 pixels, while the long wavelength channel has a mosaic of 2 of the same bolometer arrays for a total of 512 pixels. The 10 arrays have been fabricated, individually tested and integrated in the photometer. They represent the first filled arrays of fully collectively built bolometers with a cold multiplexed readout, allowing for a properly sampled coverage of the full instrument field of view. The camera has been fully characterized and the ground calibration campaign will take place after its delivery to the PACS consortium in mid 2006. The bolometers, working at a temperature of 300 mK, have a NEP close to the BLIP limit and an optical bandwidth of 4 to 5 Hz that will permit the mapping of large sky areas. This paper briefly presents the concept and technology of the detectors as well as the cryocooler and the warm electronics. Then we focus on the performances of the integrated focal planes (responsivity, NEP, low frequency noise, bandwidth).
description: 12 pages, 14 figures. To appear in Proc. SPIE 6265, "Space Telescopes and Instrumentation I", 2006 May 24-31, Orlando, Florida USA (6265-11). Higher resolution of the article available on demand (email nbillot at cea.fr)
Proposal relative to an aeraulic thermosiphon able to generate electricity using the difference of temperatures between the ambient air and the surface sea water
Creators: name: Lindecker Patrick
Publisher: name: Zenodo
Year: 2021
Subjects: Electricity production
Renewable energy
Water - Atmosphere Thermal Energy Conversion

description: In this article, it is envisaged different possibilities to generate electric energy from the difference of temperatures between the ambient atmospheric air and the surface sea water, which is a renewable source of energy. Finally, it is proposed a machine based on an aeraulic thermosiphon, installed between the seashore and a high relief (300 m at least). This electric generation is done without insoluble constraints on the refrigerant. Unfortunately, the cost of such machine is not competitive compared to a wind turbine, which prevents any commercial use. So, at least, it can be hoped that this paper will give news ideas to the readers, for a possible competitive machine.
Stochastic modication of Newtonian dynamics and Induced potential -application to spiral galaxies and the dark potential
Creators: name: Cresson, Jacky
name: Nottale, Laurent
name: Lehner, Thierry
Publisher: name: arXiv
Year: 2020
Subjects: subject: Dynamical Systems (math.DS)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: Using the formalism of stochastic embedding developed by [J. Cresson, D. Darses, J. Math. Phys. 48, 072703 (2007)], we study how the dynamics of the classical Newton equation for a force deriving from a potential is deformed under the assumption that this equation can admit stochastic processes as solutions. We focus on two denitions of a stochastic Newton's equation called dierential and variational. We rst prove a stochastic virial theorem which is a natural generalization of the classical case. The stochasticity modies the virial relation by adding a potential term called the induced potential which corresponds in quantum mechanics to the Bohm potential. Moreover, the dierential stochastic Newton equation naturally provides an action functional which sat-ises a stochastic Hamilton-Jacobi equation. The real part of this equation corresponds to the classical Hamilton-Jacobi equation with an extra potential term corresponding to the induced potential already observed in the stochastic virial theorem. The induced potential has an explicit form depending on the density of the stochastic processes solutions of the stochastic Newton equation. It is proved that this density satises a nonlinear Schr{ö}dinger equation. Applying this formalism for the Kepler potential, one proves that the induced potential coincides with the ad-hoc ''dark potential'' used to recover a at rotation curve of spiral galaxies. We then discuss the application of the previous formalism in the context of spiral galaxies following the proposal and computations given by [D. Da Rocha and L. Nottale, Chaos, Solitons and Fractals, 16(4):565-595, 2003] where the emergence of the ''dark potential'' is seen as a consequence of the fractality of space in the context of the Scale relativity theory.
Hall Effect in Protostellar Disc Formation and Evolution
Creators: name: Zhao, Bo
name: Caselli, Paola
name: Li, Zhi-Yun
name: Krasnopolsky, Ruben
name: Shang, Hsien
name: Lam, Ka Ho
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The Hall effect is recently shown to be efficient in magnetized dense molecular cores, and could lead to a bimodal formation of rotationally supported discs (RSDs) in the first core phase. However, how such Hall dominated systems evolve in the protostellar accretion phase remains unclear. We carry out 2D axisymmetric simulations including Hall effect and Ohmic dissipation, with realistic magnetic diffusivities computed from our equilibrium chemical network. We find that Hall effect only becomes efficient when the large population of very small grains (VSGs: $\lesssim$10 nm) is removed from the standard MRN size distribution. With such an enhanced Hall effect, however, the bimodality of disc formation does not continue into the main accretion phase. The outer part of the initial $\sim$40 AU disc formed in the anti-aligned configuration (${\bf Ω\cdot B}<0$) flattens into a thin rotationally supported Hall current sheet as Hall effect moves the poloidal magnetic field radially inward relative to matter, leaving only the inner $\lesssim$10--20 AU RSD. In the aligned configuration (${\bf Ω\cdot B}>0$), disc formation is suppressed initially but a counter-rotating disc forms subsequently due to efficient azimuthal Hall drift. The counter-rotating disc first grows to $\sim$30 AU as Hall effect moves the magnetic field radially outward, but only the inner $\lesssim$10 AU RSD is long-lived like in the anti-aligned case. Besides removing VSGs, cosmic ray ionization rate should be below a few 10$^{-16}$ s$^{-1}$ for Hall effect to be efficient in disc formation. We conclude that Hall effect produces small $\lesssim$10--20 AU discs regardless of the polarity of the magnetic field, and that radially outward diffusion of magnetic fields remains crucial for disc formation and growth.
description: 22 pages, 18 figures
Hand Hygiene and Infection Control in Emergency Health Services
Creators: name: Teter, Jonathan
Publisher: name: Maryland Shared Open Access Repository
Year: 2013

description: Hospital-acquired infections (HAIs) affect millions of patients annually.1  Hand hygiene compliance of clinical staff has been identified by numerous studies as a major contributing factor to HAIs around the world.  Infection control and hand hygiene in the pre-hospital environment can also contribute to patient harm and spread of infections.  EMS practitioners are not monitored as closely as hospital personnel in terms of hand hygiene training and compliance.  Their ever-changing work environment is not conducive to the same traditional hospital-based aseptic techniques and education.     This study aimed to determine the current state of hand hygiene practices among EMS providers and to provide recommendations for improving practices in the emergency health services environment.  This study was a prospective, observational prevalence study and survey, conducted over a 2-month period.  Participants were selected from unannounced visits to three selected hospital emergency departments in the mid-Atlantic region.  There were two data components to the study: a participant survey and hand swabs for pathogenic cultures.  This study recruited a total sample of 62 participants.  Overall, the study revealed that a significant number of EMS providers have a heavy bacterial load on their hands after patient care, compared to the hypothesized proportion of 50% (p-value = < 0.001). All levels of provider had a similar distribution of bacterial load.  Survey results revealed that many providers do not perform hand hygiene before or in between patients, as recommended by the CDC guidelines.  This study has shown that EMS providers are potential vectors of microorganisms if proper hand hygiene is not performed.  Since EMS providers treat a variety of patients and operate in a variety of environments, providers may expose patients to potentially pathogenic organisms, and themselves be exposed.  Proper application of accepted standards for hand hygiene can help reduce the presence of microbes on provider hands and subsequent transmission to patients and the environment.
A METHOD FOR CLUSTERING BRAIN FIBERS.
Creators: name: Prasad, Shilpa
Publisher: name: Maryland Shared Open Access Repository
Year: 2010
Subjects: Brain Fibers
Classification
Clustering
Data Mining
Principal Component Analysis
Statistical Analysis

description: The human brain has over 150,000 km of fibers connecting hundreds of billions of neurons.  The axons travel in identifiable fiber tracts and following a similar path as a bundle of fibers pass through the brain. These tracts appear in atlases and are used by surgeons and neuroscientists. Although, organization of brain fibers and its white matter is complex and not completely elucidated it is important to understand the organization of the brain. It helps in dealing with brain tumors, intra ventricular lesions, intra cerebral hematomas and others.  The goal of this thesis is to take the set of 250,000 stream lines of brain axon paths and cluster them into 20-50 fiber tracts that provide a consistent segmentation across multiple scans. We have used two methods to cluster brain. In first method, we have used classification and clustering algorithms. In second method we have used clustering and distance based measure.
Detecting cognitive stress and impairment using keystroke and linguistic features of typed text: Toward a method for continuous monitoring of cognitive status
Creators: name: Vizer, Lisa Michele
Publisher: name: Maryland Shared Open Access Repository
Year: 2013

description: Systems that can detect cognitive decline or harmful levels of stress could assist users in managing their stress and health. However, current assessments are often obtrusive or require specialized equipment, and not suited to continuous monitoring of cognitive status. This research leverages attributes of everyday keyboard interactions to proactively and continuously monitor cognitive function. A laboratory study was conducted where typing samples were collected to explore the effects of stress, age, and cognitive impairment on interaction patterns. Keystroke and linguistic features were extracted from the samples and models were constructed for each group as well as for nine individual participants. Correct classification rates were 60% for stress in younger adults, 60.5% for stress in older adults, 79.1% for age, 78.6% for cognitive impairment, and ranged from 62% to 88% with a mean of 72% for stress in individuals. This research contributes a unique combination of features for text and keystroke analysis, enhances understanding of how stress and cognitive impairment affect typing patterns, and has implications for systems for health monitoring. Further research includes exploration of additional keystroke and linguistic features, further interaction techniques, study of varied levels and types of stress, and a longitudinal study of cognitive decline.
Social Media Data Analytics Applied To Hurricane Sandy
Creators: name: Dong, Han
Publisher: name: Maryland Shared Open Access Repository
Year: 2013
Subjects: Data Analytics
Parallel AdaBoost
Social Media
Visualization

description: Social media websites are an integral part of many peoples lives in delivering news and other emergency information. This is especially true during natural disasters. Furthermore, the role of social media websites is becoming more important due to the cost of recent natural disasters. These online platforms are usually the first to deliver emergency news to a wide variety of people due to the significantly large number of users registered. During disasters, extracting useful information from this pool of social media data can be useful in understanding the sentiment of the public; this information can then be used to improve decision making. In this work, I am presenting a system that automates the process of collecting and analyzing social media data from Twitter. I also explore a variety of visualizations that can be generated by the system in order to understand the public sentiment. I demonstrate an example of utilizing this system on the Hurricane Sandy disaster from October 26, 2012 to October 30, 2012. Finally, a statistical analysis is performed to explore the causality correlation between an approaching hurricane and the sentiment of the public. As a result of the large amount of data collected by this system; scalable machine learning algorithms are needed for analysis. Boosting is a popular and powerful ensemble method in the area of supervised machine learning algorithms due to its theoretical convergence guarantees, simple implementation and ability to use different learning algorithms to produce a classifier with high accuracy. A novel parallel implementation of the multiclass version of Boosting (AdaBoost.MH) is proposed and our experimental results show that the parallel implementation achieves classification error percentages similar to serial implementation with fewer execution iterations. By distributing the tasks, the number of Boosting iterations decreased linearly at least up to 16 computational threads.
Theory of Phason Drag Effect on Thermoelectricity
Creators: name: Fukuyama, Hidetoshi
name: Ogata, Masao
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Lee, Rice and Anderson, in their monumental paper, have proved the existence of a collective mode describing the coupled motion of electron density and phonons in one-dimensional incommensurate charge density wave (CDW) in the Peierls state. This mode, which represents the coherent sliding motion of electrons and lattice distortions and affects low energy transport properties, is described by the phase of the complex order parameter of the Peierls condensate, leading to Fröhlich superconductivity in pure systems. Once spatial disorder is present, however, phason is pinned and system is transformed into an insulating ground state: a dramatic change. Since phason can be considered as an ultimate of phonon drag effect, it is of interest to see its effects on thermoelectricity, which has been studied in the present paper based linear response theory of Kubo and Luttinger. The result indicates that a large absolute value of Seebeck coefficient proportional to the square root of resistivity is expected at low temperatures k_B T/Δ<<1 (Δ: Peierls gap) with opposite sign to the electronic contributions in the absence of Peierls gap.
description: 28 pages, 5 figures
Elicitation on adverbs and clauses embedded under "want"
Creators: name: Carrillo Godínez, Silvia Lucrecia
name: Scott, Tessa
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2023
Subjects: subject: mam

description: This is a remote video interview held using Zoom.

The elicitation focuses on the placement of adverbs and clauses embedded under "want".

In this file bundle: 1 Zoom audio/video recording, 1 pdf of typed notes.
Metathesis and Unmetathesis : Parallelism and Complementarity in Amarasi, Timor
Creators: name: Edwards, Owen David Ernest
Publisher: name: The Australian National University
Year: 2018

description: In this thesis I provide a complete analysis of synchronic CV -> VC metathesis in Amarasi, an Austronesian language of western Timor. Metathesis and unmetathesis realise a paradigm of parallel forms, pairs of which occur to complement each other throughout the language.Metathesis in Amarasi is superficially associated with a bewildering array of disparate phonological processes including vowel deletion, consonant deletion, consonant insertion and multiple kinds of vowel assimilation, any of which can (and do) vary by lect in their realisation. By proposing that Amarasi has an obligatory CVCVC foot in which C-slots can be empty, all these phonological processes can be straightforwardly derived from a single rule of metathesis and two associated phonological rules.Three kinds of metathesis can be identified in Amarasi. (i) Before vowel initial enclitics, roots must undergo metathesis, responding to need to create a phonological boundary between a clitic host and enclitic. Such metathesis is syntactically driven but phonologically conditioned. (ii) Metathesis occurs within the syntax to signal attributive modification. A syntactically metathesised form cannot occur at the end of a phrase and thus requires the presence of an unmetathesised form to complete it syntactically. (iii) In the discourse an unmetathesised form marks an unresolved event or situation. Such an unmetathesised form cannot occur in isolation and requires a metathesised form to achieve resolution. Metathesis in Amarasi is the central linguistic process around which linguistic structures are organised. Amarasi metatheses also reflect fundamental Timorese notions of societal and cosmic organisation. Alongside weaving and other performed activities, metathesis is an important linguistic marker of identity in a region obsessed with similarities and differences of identity between different groups. The complementarity of Amarasi metathesis and unmetathesis within the syntax and within discourse reflects the Timorese division of the world into a series of mutually dependent binary and complementary pairs. As well as being the key which unlocks the structure of the language, metathesis is also a reflection of the structure of Amarasi society and culture.
Elicitation on intransitive objects and reflexives
Creators: name: Carrillo Godínez, Silvia Lucrecia
name: Scott, Tessa
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2023
Subjects: subject: mam

description: This is a remote video interview held using Zoom.

The elicitation focuses on intransitive objects, reflexives, and includes a few examples of verb ellipsis.

In this file bundle: 1 Zoom audio/video recording, 1 Zoom chat file, 1 pdf of typed notes.
Eye-tracking analysis of user behaviour and performance in web search on large and small screens
Creators: name: Kim, Jae Won
Publisher: name: The Australian National University
Year: 2018
Subjects: subject: Eye tracking
subject: Searching behavior
subject: Mobile computing
subject: Web search engines Design

description: In recent years, searching the web on mobile devices has become enormously popular. Because mobile devices have relatively small screens and show fewer search results, search behaviour with mobile devices may be different from that with desktops or laptops. Therefore, considering these differences may suggest better, more efficient, designs for mobile search engines. In this experiment, we use eye-tracking to explore user behaviour and performance. We analyse web searches with two task types on two differently sized screens: one for a desktop and the other for a mobile device. In addition, we examine the relationships between search performance and several search behaviours to allow further investigation of the differences engendered by the screens. We found that users have more difficulty extracting information from search results pages on the smaller screens, although they exhibit less eye movement as a result of an infrequent use of the scroll function. However, in terms of search performance, our findings suggest that there is no significant difference between the two screens in time spent on search results pages and the accuracy of finding answers. As a consequence, this suggests that mobile devices do not need to display as many results as desktop screens, and we should consider alternative ways to present search results for small screens by considering the effect of decreased eye movement and use of the scroll function. We suggest several possible ideas for the presentation design of search results pages on small devices.
A Longitudinal Analysis of the Dependency Concentration in Smaller Modules for Open-Source Software Products
Creators: name: Parande, Mohammed Aziz
Publisher: name: Maryland Shared Open Access Repository
Year: 2010
Subjects: Concentration Index
Concentration Inequality
Dependency Concentration
Refactoring
Software Coupling
Software Quality

description: Recent studies on single releases of Open-Source Software (OSS) products have reported a higher concentration of dependencies in smaller modules. In this masters research, we investigated the findings of the recent studies by taking a longitudinal perspective and for a greater number of large-scale OSS products. Specifically, we investigated whether the reported concentration inequality always exists during product life time, and if so, how it changes over successive software releases. The results clearly confirm the earlier findings showing that, in all releases of all products examined, smaller modules were proportionally more dependent compared to larger ones. Generally, this concentration inequality increases over successive releases of the studied products. Since dependencies have been consistently associated with defects and failures in the software engineering literature, this comprehensive study of a large number of OSS products suggests that software teams should concentrate inspection and testing activities more on smaller modules. Our results also indicate that such focused QA efforts should be gradually increased as a software product evolves and matures.
Social Media Analytics - Digital Footprints
Creators: name: Krishnan, Sandhya
Publisher: name: Maryland Shared Open Access Repository
Year: 2013
Subjects: Cyber Crime
Digital Footprints
Hacking
Security
Social Media
Twitter security

description: In this work we describe an approach to distinguish real and impostor/compromised accounts on social media. Compromising a user's social media account is not only a breach of security, but can also lead to dissemination of misinformation at a fast pace on social media.  There have been several such high profile attacks recently, including on Twitter feeds of AP, CBS, and Delta Airlines. A fake account for the Prime Minister's Office (PMO) in India was used to spread malicious rumors last year.  Our approach builds a digital social footprint of users using both the content of their tweets and the structure of their social network.  We analyze the real time content of users' tweets and compare it with information about them from reliable sources on the web (newspapers / news channels etc.)to compute a similarity metric. We also compute a metric based on the social network analysis of the users -- who connects to them, who they are connected with, and how central they are in their network.  We have shown how these metrics combined judiciously can detect fake accounts for not just well known people such as President Obama, but also for lesser known people and organizations. We also show promising initial results on how this approach can be used to detect an account which has been hacked.
Three essays on water modelling and management in the Murray-Darling Basin, Australia
Creators: name: Jiang, Qiang
Publisher: name: The Australian National University
Year: 2018
Subjects: subject: HD1700.A1 J53 2011
subject: Climatic changes
subject: Water resources development Econometric models
subject: Irrigation Economic aspects
subject: Darling River Watershed (Qld. and N.S.W.) Management
subject: Murray River Watershed (N.S.W.-S. Aust.) Management

description: The primary contributions of this thesis are the economic studies of proposed water use reductions and climate change, and the development of an integrated hydro-economic model for the Murray-Darling Basin, Australia. This water model not only simulates the land and water use in the Basin, but also optimises these uses for certain targets such as environmental flows. More importantly, this model can be applied to evaluate policy options for the Basin, such as water buybacks, and provide estimates of the possible impacts of climate change. The thesis consists of three main essays focusing on issues in water modelling and management in the Basin. The first essay describes the development of a water model. This model is applied to estimate the impacts of water use reductions in the second essay; and climate change in the third essay. Other issues related to the Basin's water management, such as a review of existing water modelling, the background of the Basin, water trading, possible policy implementations and future research are also discussed. The first essay (Chapter 4) describes the construction of the Integrated Irrigated Water Model (IIA WM) including the structure of llA WM and the data sources. Using the latest hydrological data and revised catchment boundaries, llA WM can simulate and optimise land and water use in the Basin. To address the criticism that existing models have failed to consider water trading barriers, the physical constraints on water trading have been incorporated in llA WM. The model can also evaluate various water policies and estimate the impacts of physical condition changes. The second essay (Chapter 5) evaluates the impacts of proposed water use reductions by the Australian government. To balance the use of water between irrigated industries and environmental purposes, the Australian government draft plan released October 2010 proposed to reduce the volume of used water in the Basin from 3,000 to 4,000 GL/year. Simulations from IIA WM indicate that the impacts from proposed water use reductions will be modest, although there may be substantial impacts in particular locations. The third essay (Chapter 6) investigates the impacts of climate change in the Basin. A full range of climate change scenarios from modest to severe have been applied using IIA WM. This thesis finds that with water trading, profit reductions are substantially smaller than the water use reductions.
title: "To shut our eyes is Travel"
title: images of traveling in Emily Dickinson's poetry
titleType: Subtitle
Creators: name: Hu, Youming
Publisher: name: Universität Paderborn
Year: 2020

description: Diese Doktorarbeit exploriert die vielseitigen Bilder des Reisens in den Gedichten von Emily Dickinson. Durch die Präsentation und Analyse ihrer Bildsprache wird die Arbeit zum einen das Reisen als zentrales Motiv in Dickinsons Lyrik aufdecken, und zum anderen Darstellungen des Reisens in Verbindung mit Dickinsons bekannten Themen wie ihrer Beschäftigung mit dem Tod, der Unsterblichkeit, dem Erhabenen und „Circumference“ interpretieren. Diese Arbeit beabsichtigt, Dickinsons vielfältige Bilder des Reisens zu verstehen und so zu beleuchten, wie diese Bilder Aufschlüsse über ihr Flutmotiv - die Unsterblichkeit - geben. Durch die Erörterung der Bilder von der Seereise, des Sonnenunterganges, der Reise und von Toponymen wird ein Kontrast zwischen dem Gefühl von Heimat und Fremdheit aufgedeckt. Darüber hinaus kann das Reisen traumatisch oder freudvoll sein, und man kann zu Hause genauso fremd sein wie im Ausland. Tatsächlich offenbaren Dickinsons Bilder des Reisens ihren Lesern noch mehr: Einerseits ist es unglaublich, dass sie als Frau des neunzehnten Jahrhunderts und als Einsiedlerin ihr Wissen über die Geschlechter- und Identitätsgrenzen hinaus erweitern konnte. Und andererseits scheint sie aufgrund ihres Geschlechts und ihrer Identität mehr Freiheiten und Möglichkeiten zu haben, in ihrer Vorstellungswelt zu reisen.
description: This paper attempts to explore colorful images of traveling in Emily Dickinsons poetry. By presenting and analyzing those images, the paper will on the one hand, reveal travel as a theme of Dickinsons poetry; on the other hand, interpret the images of traveling in combination with the poets famous subjects of death, immortality, sublime, and circumference. It intends to figure out Dickinsons various images of traveling, and meanwhile, to present how these images function in revealing her flood subject - immortality. By discussing these images of voyage, sunset, journey, and toponyms, a contrast between the sense of home and foreignness is revealed. Moreover, travel can be traumatic or joyful, and one can be as foreign at home as abroad. Indeed, Dickinsons images of traveling present more to her reader: On the one hand, as a nineteenth-century woman and a recluse, it is incredible that she would extend her knowledge beyond the boundaries of gender and identity; on the other hand, because of her gender and identity, she seems to have more liberty and possibility to travel in her imaginative world.
A CROSS CULTURAL USABILITY STUDY ON THE INTERNATIONALIZATION OF USER INTERFACES BASED ON AN EMPIRICAL FIVE FACTOR MODEL
Creators: name: Chakraborty, Joyram
Publisher: name: Maryland Shared Open Access Repository
Year: 2009
Subjects: Cross Cultural Studies
E-Commerce
Empirical Studies
Internationalization of User Interfaces
Software Development Methodology
Usability

description: With the internationalization of e-commerce, it is no longer viable to design one user interface for all environments. Web-based applications and services can be accessed from all over the globe. To account for this globalization process, software developers need to understand that simply accounting for language translation of their websites for different countries and cultures in which they operate is not sufficient. Developers must exhibit sensitivity for the nuances that exist in all cultures if their e-commerce sites are to be successful in gaining acceptance in the domestic markets. Indeed, today's developers must be charged with the task to think globally but act locally. The problem posed to researchers and developers alike is to identify a set of universally accepted design guidelines that are useful to developers in deigning cross cultural websites. Current researches have applied Hofstede's cultural dimension model to explain cultural differences in web-based applications and suggest modifications. However, there is a general lack of empirical evidence in the field upon which to base these suggestions. In this study a five factor hybrid cross cultural model (the SLICK model) for the internationalization of user interfaces based on literature findings is proposed and empirically tested using participants from two cultures, American and Zambian. The SLICK model consists of five common attributes factors of culture as found the in the literature. Two pilot studies were carried out on the two cultures using this model. The results of the preliminary study suggested the need for some modifications to the web-based questionnaire to maximize the effectiveness of this model. The dissertation study was conducted using undergraduate students from the University of Maryland, Baltimore County, the University of Nevada Las Vegas and the University of Zambia. The findings of the study indicate that users showed a greater understanding of user interfaces that employed culturally familiar instances of the hybrid SLICK model. This study demonstrates that with the correct application of the SLICK model, software developers can effectively design cross culturally sensitive user interfaces for an international audience.
Petrophysical analysis of regional-scale thermal properties for improved simulations of geothermal installations and basin-scale heat and fluid flow
Creators: name: Hartmann, Andreas
name: Pechnig, Renate
name: Clauser, Christoph
Publisher: name: arXiv
Year: 2008
Subjects: subject: Geophysics (physics.geo-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Development of geothermal energy and basin-scale simulations of fluid and heat flow both suffer from uncertain physical rock properties at depth. Therefore, building better prognostic models are required. We analysed hydraulic and thermal properties of the major rock types in the Molasse Basin in Southern Germany. On about 400 samples thermal conductivity, density, porosity, and sonic velocity were measured. Here, we propose a three-step procedure with increasing complexity for analysis of the data set: First, univariate descriptive statistics provides a general understanding of the data structure, possibly still with large uncertainty. Examples show that the remaining uncertainty can be as high as 0.8 W/(m K) or as low as 0.1 W/(m K). This depends on the possibility to subdivide the geologic units into data sets that are also petrophysically similar. Then, based on all measurements, cross-plot and quick-look methods are used to gain more insight into petrophysical relationships and to refine the analysis. Because these measures usually imply an exactly determined system they do not provide strict error bounds. The final, most complex step comprises a full inversion of select subsets of the data comprising both laboratory and borehole measurements. The example presented shows the possibility to refine the used mixing laws for Petrophysical properties and the estimation of mineral properties. These can be estimated to an accuracy of 0.3 W/(m K). The predictive errors for the measurements are 0.07 W/(m K), 70 m/s, and 8 kg/m^3 for thermal conductivity, sonic velocity, and bulk density, respectively.
description: 13 pages, 10 figures, International Journal of Earth Sciences
Understanding Type Ia Supernova Distance Biases by Simulating Spectral Variations
Creators: name: Pierel, J. D. R.
name: Jones, D. O.
name: Dai, M.
name: Adams, D. Q.
name: Kessler, R.
name: Rodney, S.
name: Siebert, M. R.
name: Foley, R. J.
name: Kenworthy, W. D.
name: Scolnic, D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In the next decade, transient searches from the Vera C. Rubin Observatory and the Nancy Grace Roman Space Telescope will increase the sample of known Type Ia Supernovae (SN Ia) from $\sim10^3$ to $10^5$. With this reduction of statistical uncertainties on cosmological measurements, new methods are needed to reduce systematic uncertainties. Characterizing the underlying spectroscopic evolution of SN Ia remains a major systematic uncertainty in current cosmological analyses, motivating a new simulation tool for the next era of SN Ia cosmology: Build Your Own Spectral Energy Distribution (BYOSED). BYOSED is used within the SNANA framework to simulate light curves by applying spectral variations to model SEDs, enabling flexible testing of possible systematic shifts in SN Ia distance measurements. We test the framework by comparing a nominal Roman SN Ia survey simulation using a baseline SED model to simulations using SEDs perturbed with BYOSED, and investigate the impact of neglecting specific SED features in the analysis. These features include semi-empirical models of two possible, predicted relationships: between SN ejecta velocity and light curve observables, and a redshift-dependent relationship between SN Hubble residuals and host galaxy mass. We analyze each BYOSED simulation using the SALT2 & BBC framework, and estimate changes in the measured value of the dark energy equation-of-state parameter, $w$. We find a difference of $Δw=-0.023$ for SN velocity and $Δw=0.021$ for redshift-evolving host mass when compared to simulations without these features. By using BYOSED for SN Ia cosmology simulations, future analyses (e.g., Rubin and Roman SN Ia samples) will have greater flexibility to constrain or reduce such SN Ia modeling uncertainties.
Electromagnetic field of fractal distribution of charged particles
Creators: name: Tarasov, Vasily E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Astrophysics (astro-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: Electric and magnetic fields of fractal distribution of charged particles are considered. The fractional integrals are used to describe fractal distribution. The fractional integrals are considered as approximations of integrals on fractals. Using the fractional generalization of integral Maxwell equation, the simple examples of the fields of homogeneous fractal distribution are considered. The electric dipole and quadrupole moments for fractal distribution are derived.
description: RevTex, 21 pages, 2 pictures
Contextual Information Fusion for the Detection of Cyber-Attacks
Creators: name: Aleroud, Ahmed Fayez
Publisher: name: Maryland Shared Open Access Repository
Year: 2014
Subjects: Context
Contextual Information
Cyber Attacks
Information Security
Intrusion Detection
Semantics

description: Research in cyber-security has demonstrated that dealing with cyber-attacks is by no means an easy task. One particular limitation of existing research comes from the uncertainty of information gathered and used to discover attacks. Part of this uncertainty is related to lack of attack prediction models that take advantage of contextual information to analyze activities that target computer networks. A major challenge of the existing attack detection approaches is the identification of relevant information to a particular situation, and the use of such information to perform multi-evidence intrusion detection. Addressing such limitations require combining several aspects of context to better predict, avoid and respond to attacks so that several consistent evidence contribute to the decisions about the relevancy of attacks that target the network. A promising path along this direction is to elevate contextual information as a first class object in collecting and analyzing cyber security data. Yet again, the quality and adequacy of contextual information is important to decrease uncertainty in correctly identifying potential cyber-attacks. This dissertation introduces a novel framework that extracts and uses contextual information to discover cyber-attacks. A systematic methodology has been used to identify contextual dimensions that need to be considered to consequently improve the effectiveness of cyber-attack detection process. A methodology which combines graph, probability, and information theories  along with domain knowledge is utilized to create several context-based attack prediction models that analyze data at a high- and low-level. This context-based framework identifies not only known, but also unknown attacks which an Intrusion Detection System (IDS) is not aware-of. The outlined framework can be mainly applied in conjunction with existing intrusion detection techniques to improve attack detection rate. In addition to showing the theoretical properties of the generated prediction models, several types of experiments have been conducted to evaluate the prediction models of known and unknown attacks. A comparison with other methodologies shows that a multi-layer fusion of contextual information in the process of attack discovery leads to superior results in terms of better attack detection and fewer false positive rates.
SENTIMENT ANALYSIS ON TWEETS AND THEIR RELATIONSHIP WITH STOCK MARKET TRENDS
Creators: name: Sharma, Jay
Publisher: name: Maryland Shared Open Access Repository
Year: 2013
Subjects: AAPL
Machine Learning
Sentiment Analysis
Stock Market
Twitter

description: We investigate whether sentiment derived from micro-blogging site Twitter can be used to identify important events (product launch, quarter results etc.) and help to infer the future movement of the stock. We used the volume and key performance index of Apple Company's financial tweets to identify important events and infer the future movement. We present the results of machine learning algorithms (Na?ve Bayes, Maximum Entropy, and SVM) for classifying the sentiment of Apple Company's financial tweets. Statistical analysis using Granger causality test showed that we were able to infer the movement of Apple Company's stock close price in advance.
AN ECONOMIC ANALYSIS OF AIRPORT BAGGAGE ROUTING AND AIRLINE SECURITY
Creators: name: Sozi, Johny Leonard
Publisher: name: Maryland Shared Open Access Repository
Year: 2011
Subjects: Airlines
Airports
Baggage
Economics
Security
Technology

description: A significant portion of American Airlines (AA) and American Eagle (AE) financial loss experienced at Washington Reagan National Airport (DCA) in the past years is due to the inefficiency in baggage handling, routing processes and associated security costs at DCA. The objective of this thesis is to analyze the impact of Information Technology (IT) on airport baggage routing and security. Based on an economic analysis of the detailed AA and AE daily baggage traffic flows and baggage routing process data we collected at DCA, we not only identified several areas of operational inefficiency in the baggage handling process, but also quantified the benefit of IT investment in improving the process efficiency. These findings provide important insights into major areas of inefficiency and technology investment in the baggage handling operations by American Airlines.  We also generalize our findings to make applicable suggestions and practical recommendations on baggage issues for the aviation industry.
Corona of Magnetars
Creators: name: Beloborodov, Andrei M.
name: Thompson, Christopher
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We develop a theoretical model that explains the formation of hot coronae around strongly magnetized neutron stars -- magnetars. The starquakes of a magnetar shear its external magnetic field, which becomes non-potential and is threaded by an electric current. Once twisted, the magnetosphere cannot untwist immediately because of its self-induction. The self-induction electric field lifts particles from the stellar surface, accelerates them, and initiates avalanches of pair creation in the magnetosphere. The created plasma corona maintains the electric current demanded by curl(B) and regulates the self-induction e.m.f. by screening. This corona persists in dynamic equilibrium: it is continually lost to the stellar surface on the light-crossing time of 10^{-4} s and replenished with new particles. In essence, the twisted magnetosphere acts as an accelerator that converts the toroidal field energy to particle kinetic energy. Using a direct numerical experiment, we show that the corona self-organizes quickly (on a millisecond timescale) into a quasi-steady state, with voltage ~1 GeV along the magnetic lines. The heating rate of the corona is ~10^{36} erg/s, in agreement with the observed persistent, high-energy output of magnetars. We deduce that a static twist that is suddenly implanted into the magnetosphere will decay on a timescale of 1-10 yrs. The particles accelerated in the corona impact the solid crust, knock out protons, and regulate the column density of the hydrostatic atmosphere of the star. The transition layer between the atmosphere and the corona is the likely source of the observed 100-keV emission from magnetars. The corona emits curvature radiation and can supply the observed IR-optical luminosity. (Abridged)
description: 70 pages, 14 figures, accepted to ApJ
title: Digitalisierung im Bereich der professionellen Wäschereitechnik
Creators: name: Grefe, Martin
Publisher: name: FH CAMPUS 02 (CAMPUS 02 Fachhochschule der Wirtschaft)
Year: 2025
Subjects: subject: 658 Allgemeines Management

description: Weltweit ist die Digitalisierung sowie damit verbundene Chancen ein Thema. Vorwiegend in Deutschland finden jedoch immer noch verhältnismäßig wenige Firmen den Mut, den für das eigene Unternehmen richtigen Weg zur digitalen Transformation zielstrebig anzugehen und sicher zu meistern. Ein Grund für die zögerliche Haltung kann daran ausgemacht werden, dass zu viele unbeantwortete Fragen und unabschätzbare wirtschaftliche Risiken ein Hindernis darstellen.
Systemmodelle bieten eine gute Möglichkeit Transparenz zu schaffen und Fragen zu betrachteten Systemen zu beantworten. In dieser Masterarbeit wird anhand eines Fallbeispiels ein Weg aufgezeigt, wie diese Fragen ausschließlich mittels Methoden des „Model Based Systems Engineering (MBSE)“ beantwortet und damit Entscheidungsgrundlagen erarbeitet werden können. Dies beinhaltet insbesondere Vorschläge zur Analyse von Informationen beziehungsweise Daten direkt in einem Systemmodell. Im Kontext der „Industrie 4.0“ und der „Data Analytics“, bei denen es darauf ankommt, dass Informationspfade korrekt miteinander verknüpft sind, wird zugleich evaluiert, wie sich dessen Inhalte und Prinzipien auf Methoden des MBSE auswirken.
description: Worldwide people talk about digitalization and the related chances. Especially in Germany, still only a few entrepreneurs, comparatively to the rest of the world, do have the courage to tackle and master their own path to the digital transformation. In addition to various reasons, the hesitancy can be attributed to the fact, that too many unanswered questions and incalculable economic risks are an obstacle.
Since system models provide a good opportunity to create transparency and to answer questions about a system, this master thesis presents a way of answering these questions and draws up decision bases, exclusively by using the methods of „Model Based Systems Engineering (MBSE)“. In particular, this includes suggestions for direct analysis of information inside of a system model. In the context of the industrial digitization „Industry 4.0“ and „Data Analytics“, where it is important, that all information paths are correctly linked, it will also be evaluated, how its contents and principles will affect the methods of MBSE.