cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Maxwell-Drude-Bloch dissipative few-cycle optical solitons
Creators: name: Rosanov, Nikolay N.
name: Kozlov, Victor V.
name: Wabnitz, Stefan
Publisher: name: arXiv
Year: 2010
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We study the propagation of few-cycle pulses in two-component medium consisting of nonlinear amplifying and absorbing two-level centers embedded into a linear and conductive host material. First we present a linear theory of propagation of short pulses in a purely conductive material, and demonstrate the diffusive behavior for the evolution of the low-frequency components of the magnetic field in the case of relatively strong conductivity. Then, numerical simulations carried out in the frame of the full nonlinear theory involving the Maxwell-Drude-Bloch model reveal the stable creation and propagation of few-cycle dissipative solitons under excitation by incident femtosecond optical pulses of relatively high energies. The broadband losses that are introduced by the medium conductivity represent the main stabilization mechanism for the dissipative few-cycle solitons.
description: 38 pages, 10 figures. submitted to Physical Review A
Coherent magnetotransport and time-dependent transport through split-gated quantum constrictions
Creators: name: Torfason, Kristinn
name: Tang, Chi-Shung
name: Gudmundsson, Vidar
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The authors report on modeling of transport spectroscopy in split-gate controlled quantum constrictions. A mixed momentum-coordinate representation is employed to solve a set of time-dependent Lippmann-Schwinger equations with intricate coupling between the subbands and the sidebands. Our numerical results show that the transport properties are tunable by adjusting the ac-biased split-gates and the applied perpendicular magnetic field. We illustrate time-modulated quasibound-state features involving inter-sideband transitions and the Aharonov-Bohm oscillation characteristics in the split-gated systems.
description: RevTeX (pdf-LaTeX), 8 pages with 10 included jpg figures
CULTIVATING FINANCIAL FREEDOM: UNLOCKING THE PASSIVE INCOME POTENTIAL OF ABACA FOR WOMEN, SENIOR CITIZENS, AND WORKING PROFESSIONALS
Creators: name: ALADIN P. REPASO
Publisher: name: Zenodo
Year: 2024
Subjects: Elderly, Gender Equality, Interpretative Phenomenological Analysis, Natural Fiber, Qualitative Research.

description: Abstract

Women and older people are among the most vulnerable and marginalized groups, facing limited income opportunities, especially in agriculture. Given the current state of rising inflation, it is becoming increasingly challenging to earn enough income for a comfortable standard of living. Working on a farm combining abaca and coconut can be highly profitable. However, this type of farming requires a significant amount of labor that can restrict the involvement of women and seniors. Using interpretative phenomenological analysis, the study qualitatively describes the unique experiences of women, senior individuals, and working professionals in abaca farming. This study reveals that their engagement is primarily focused on less demanding responsibilities and mainly involves overseeing operations. As a result, they earn income through their indirect involvement in harvesting, which helps support various household needs, fulfill school obligations, and even enables them to provide funds to others.
Using The Feedback of Dynamic Active-Pixel Vision Sensor (Davis) to Prevent Slip in Real Time
Creators: name: Masoumian, Armin
name: kazemi, Pezhman
name: Montazer, Mohammad Chehreghani
name: Rashwan, Hatem A.
name: Valls, Domenec Puig
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: The objective of this paper is to describe an approach to detect the slip and contact force in real-time feedback. In this novel approach, the DAVIS camera is used as a vision tactile sensor due to its fast process speed and high resolution. Two hundred experiments were performed on four objects with different shapes, sizes, weights, and materials to compare the accuracy and response of the Baxter robot grippers to avoid slipping. The advanced approach is validated by using a force-sensitive resistor (FSR402). The events captured with the DAVIS camera are processed with specific algorithms to provide feedback to the Baxter robot aiding it to detect the slip.
description: 5 pages, Accepted for The 6th International Conference on Mechatronics and Robotics Engineering (ICMRE 2020)
Pressure shift of the superconducting T_c of LiFeAs
Creators: name: Gooch, M.
name: Lv, B.
name: Tapp, J. H.
name: Tang, Z.
name: Lorenz, B.
name: Guloy, A. M.
name: Chu, P. C. W.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The effect of hydrostatic pressure on the superconductivity in LiFeAs is investigated up to 1.8 GPa. The superconducting transition temperature, T_c, decreases linearly with pressure at a rate of 1.5 K/GPa. The negative pressure coefficient of T_c and the high ambient pressure T_c indicate that LiFeAs is the high-pressure analogue of the isoelectronic SrFe_2As_2 and BaFe_2As_2.
description: 3 pages, 2 figures
title: Investigations of Polyhydroxyalkanoate Secretion and Production Using Sustainable Carbon Sources
Creators: name: Nielsen, Chad L.
Publisher: name: Utah State University
Year: 2018

description: Polyhydroxyalkanoates (PHAs) are a type of biologically-produced plastic known for their biocompatibility and biodegradability. They have the potential to replace petroleum-based plastics as an environmentally-friendly alternative. This is beneficial because the release of plastics into environments such as the ocean and the buildup of plastics in landfills are major concerns facing society today. Currently, however, PHAs are significantly more expensive than their petroleum-based counterparts. This is largely due to the cost of carbon sources and of extracting the bioplastics from bacteria. The goal of these studies was to examine replacing traditional carbon sources used in PHA production like sugar and oils with sustainable carbon sources and to improve extraction procedures by inducing secretion of PHAs in bacteria.
A few sustainable carbon sources were examined for use in PHA production. First, studies focused on the conversion of food waste into PHAs were reviewed. It was shown that utilizing food wastes as carbon sources may be a viable approach to producing PHAs. A second carbon source examined was methanol. A novel isolate of Methylobacterium that demonstrated the ability to produce PHAs from methanol was identified. A system of secreting PHAs that was constructed using synthetic biological engineering approach was introduced to this isolate. This secretion system was not shown to improve extraction of PHAs in Methylobacterium in its current form.
Strategie di sviluppo sostenibile: studio e applicazione della metodologia di analisi degli scenari in campo agro-ambientale
Creators: name: Balducci, Elena <1978>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2008
Subjects: AGR/02 Agronomia e coltivazioni erbacee

description: L’obiettivo del lavoro svolto nell’ambito del ciclo di dottorato è stato quello dell’applicazione della
metodologia di analisi degli scenari, nell’ottica dello studio e applicazione di un metodo di analisi
integrato e multidisciplinare che consenta individuare strategie di sviluppo sostenibile in relazione
alla questione indagata.
Lo studio sviluppato nel corso del dottorato è stato impostato su presupposti forniti dalla Regione
Toscana (in entrambi i casi di studio trattati), che ha finanziato, attraverso la sua Agenzia Regionale
per lo Sviluppo e Innovazione in ambito Agricolo (ARSIA), due Progetti di ricerca volti
all’individuazione di strategie di sviluppo sostenibile concernenti due tematiche di particolare
interesse in ambito regionale: lo sviluppo di coltivazioni non-food (biocarburanti, biomasse da
energia, biopolimeri, biolubrificanti, fibre vegetali, coloranti naturali, fitofarmaci di origine
vegetale) e la valutazione della possibilità di coesistenza tra colture convenzionali (non
Geneticamente Modificate) e colture GM, in relazione alla Raccomandazione della Commissione
2003/556/CE che afferma che deve essere garantita la coesistenza tra colture transgeniche,
convenzionali e biologiche, ovvero che devono essere presenti le condizioni per cui ciascun metodo
di coltivazione possa poter essere adottato e praticato in UE.
La sostenibilità delle situazioni studiate è stata valutata fornendo informazioni non solo per la
situazioni attuali, ma anche per possibili evoluzioni future, così come richiesto dai principi dello
sviluppo sostenibile. A tal proposito, occorre applicare metodologie di analisi che consentano di
poter identificare obiettivi strategici in funzione dei cambiamenti che potrebbero essere registrati, in
corrispondenza dell’evolversi delle diverse situazioni nel tempo. La metodologia di analisi in grado
di soddisfare questi requisiti può essere identificata nell’analisi di scenario (scenario analysis), che
si configura come uno strumento di analisi strategica in grado di riassumere numerose informazioni
e dati riferiti agli attori, agli obiettivi, agli strumenti, alle cause ed agli effetti indotti da un
cambiamento che potrebbe essere provocato da uno o più fattori contemplati nel corso dell’analisi.
Questo metodo di analisi rappresenta un’importante strumento di ausilio alla definizione di politiche
e strategie, che si rende particolarmente utile nel campo della public choice, come dimostrato dalle
applicazioni presentate nel corso del lavoro.
RELATIONSHIP OF DEGREE OF OBESITY TO URINARY ALBUMIN CREATININE RATIO IN OBESE ADOLESCENTS
Creators: name: Sardito Phan
name: Adrian Umboh
name: Raynald Oktafianus Takumansang
name: Rocky Wilar
name: Suryadi Nicolaas Napoleon Tatura
name: Valentine Umboh
Publisher: name: Zenodo
Year: 2024
Subjects: Adolescent Obesity, Urinary Albumin Creatinine Ratio, Kidney Health.

description: Abstract

The increasing prevalence of obesity in adolescents, which is a severe global health problem, focuses on the relationship between the degree of obesity and the ratio of urine creatinine albumin. This study aimed to evaluate the association between the degree of obesity in adolescents and the urinary albumin creatinine ratio as an indicator of kidney health. This study used observational analytical research methods with a cross-sectional approach in obese adolescents. This research was conducted in 4 secondary schools in Manado, including SMP Negeri 8 Manado, SMP Negeri 4 Manado, SMA Katholik Rex Mundi Manado, and SMA Kristen Eben Haezer Manado. The results showed a relationship between the degree of obesity in obese adolescents and an increase in urinary albumin creatinine ratio, where the heavier the degree of obesity, the ratio tends to increase.
title: Latent Difference Score Mediation Analysis in Developmental Research: A Monte Carlo Study and Application
Creators: name: Simone, Melissa
Publisher: name: Utah State University
Year: 2018

description: Developmental and prevention researchers aim to determine how unhealthy behaviors emerge. Mediation analysis offers a statistical tool that allows researchers to describe the processes underlying early risk and later health outcomes. Among existing longitudinal mediation models, latent difference score mediation stands out due to its unique ability to capture variations in changes both within and across individuals, as well as its ability to examine non-linear change over time. However, the literature currently lacks sample size guidelines for latent difference mediation models, which has proven to make the use of these models difficult. The current project addresses this limitation by offering an empirical set of sample guidelines for a variety of latent difference mediation score models through a Monte Carlo simulation study. By offering empirical sample size guidelines for latent difference score mediation models, future developmental and prevention researchers can make informed sampling decisions prior to data collection.
Moreover, women who misuse alcohol have been found to experience more severe medical consequences than men. However, minimal research has evaluated how gender specific risk factors influence its onset. The current project addresses this limitation by applying latent difference score mediation to evaluate how disordered eating behaviors among adolescent girls influence alcohol misuse among adult women.
Mapping Mesophotic Habitats with EOSC Services and Tools
Creators: name: Castellan, Giorgio
Publisher: name: Zenodo
Year: 2023

description: Marine habitat mapping provides a holistic representation of ecologicallyrelevant marine habitats, their associated biological communities, areal extent, distribution patterns, status, and physical conditions. The mesophotic zone, part of the water column with dim light conditions, can host a diverse mosaic of benthic habitats, hotspots of biodiversity.
 However, the mesophotic domain depends on light conditions that vary considerably depending on geographical location. Satellite and remote sensing data can be used to map the extension and distribution of the mesophotic zone, providing information to support the conservation and management of the biodiversity the zone hosts. Integrating and processing satellite/remote sensing data, however, can be challenging in terms of data mining, data accessibility and computational resources. This was one of the main challenges of the project.
title: Be Cool, Stay in School: The Habits, Resources, and Confidence College Students Need to Succeed
Creators: name: Staheli, Matthew
Publisher: name: Utah State University
Year: 2018

description: Earning a college degree yields many benefits. In addition to an increased income, college degree earners generally have greater job satisfaction, make healthier life choices, are better communicators, and have greater social mobility. Even with all of these benefits, however, some colleges are seeing graduation rates as low as 32%. One of the greatest contributing factors affecting the dropout rate of undergraduate college students is poor academic performance in their courses. In this study, we sought to identify several academic resources, study behaviors, academic self-confidence scores, and demographic information to assess what types of behaviors and resources may lead to higher academic performance. There were 148 undergraduate student participants, out of 696 possible students (21.3%), from three sections of Introductory Psychology courses at Utah State University. They participated in a multi-phase survey to assess study habits, and resources that they used when preparing for their psychology course exams. Statistical analyses identified several significant differences between men and women, and between first generation and non-first-generation students. Women studied almost twice as much, compared to men, in terms of hours spent, and course content covered. Academically, first-generation students struggled in almost every way, compared to non-first-generation students. After identifying how the study behavior and resource variables influenced each other, we also identified which variables were the most influential on the students’ final course grades. We found that a student’s GPA (grade point average) was the most important factor, followed by their self-confidence in their academic abilities, followed by their class attendance, followed by how many hours they work outside of school. All of those variables likely affect a student’s final grade, and it is important that college students are informed about which study resources and behaviors they should utilize, to be as successful as possible.
Influenza del sistema immunogenetico KIR nell'alloreattività Natural Killer nel trapianto di rene
Creators: name: Corsini, Serena <1981>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2011
Subjects: MED/14 Nefrologia

description: Kidney transplantation is the best treatment option for the restoration of excretory and endocrine kidney function in patients with end-stage renal disease.
The success of the transplant is linked to the genetic compatibility between donor and recipient, and upon progress in surgery and immunosuppressive therapy.  
Numerous studies have established the importance of innate immunity in transplantation tolerance, in particular natural killer (NK) cells represent a population of cells involved in defense against infectious agents and tumor cells.
NK cells express on their surface the Killer-cell Immunoglobulin-like Receptors (KIR) which, by recognizing and binding to MHC class I antigens, prevent the killing of autologous cells.
In solid organ transplantation context, and in particular the kidney, recent studies show some correlation between the incompatibility KIR / HLA and outcome of transplantation so as to represent an interesting perspective, especially as regards setting of immunosuppressive therapy. 
The purpose of this study was therefore to assess whether the incompatibility between recipient KIR receptors and HLA class I ligands of the donor could be a useful predictor in order to improve the survival of the transplanted kidney and also to select patients who might benefit of a reduced regimen.
One hundred and thirteen renal transplant patients from 1999 to 2005 were enrolled. Genomic DNA was extracted for each of them and their donors and genotyping of HLA A, B, C and 14 KIR genes was carried out.
Data analysis was conducted on two case-control studies: one aimed at assessing the outcome of acute rejection and the other to assess the long term transplant outcome. 
The results showed that two genes, KIR2DS1 and KIR3DS1, are associated with the development of acute rejection (p = 0.02 and p = 0.05, respectively).
The presence of the KIR2DS3 gene is associated with a better performance of serum creatinine and glomerular filtration rate (MDRD) over time (4 and 5 years after transplantation, p <0.05), while in the presence of ligand,  the serum creatinine and MDRD trend seems to get worse in the long term.
The analysis performed on the population, according to whether there was deterioration of renal function or not in the long term, showed that the absence of the KIR2DL1 gene is strongly associated with an increase of 20% of the creatinine value at 5 years, with a relative risk to having a greater creatinine level than the median 5-year equal to 2.7 95% (95% CI: 1.7788 - 2.6631). 
Finally, the presence of a kidney resulting negative for HLA-A3 / A11, compared to a positive result, in patients with KIR3DL2, showed a relative risk of having a serum creatinine above the median at 5 years after transplantation of 0.6609  (95% CI: 0.4529 -0.9643), suggesting a protective effect given to the absence of this ligand.
title: Numerical Evaluation of Energy Release Rate at Material Interfaces for Fatigue Life Predictions
Creators: name: Hendrickson, Robert L.
Publisher: name: Utah State University
Year: 2018

description: Composite materials are becoming popular in almost all industries. Carbon-fiber and glass-fiber composites are used in aircraft, sports equipment, boats, prosthetics, and wind turbine blades. In all these applications, the composites are subjected to different loads. Loads can take the form of impact or cyclic/fatigue loading, both of which decrease the strength of composites as micro-cracks grow through the composite. Composite laminates are made up of fiber plies (thin layers of fiber) and the fibers are surrounded by a resin like epoxy. It is common for laminates to fail because of delamination growth (plies peeling apart). Small delaminations do not fail a composite, but as delaminations grow, the composite weakens and eventually fails. Composites behave differently than metals do, and failure analysis is more complicated because of the various directions of fibers. Numerical methods (specifically Finite Element Analysis) exist for predicting when failure will occur, but improvements are needed to make these numerical methods more accurate and efficient. The method created, for this thesis, is computationally efficient because it doesn’t require the analyst or computer to adjust the simulation based on where the delamination is (or what kind of shape it is). Energy values are extracted directly from the delamination front and not averaged from nearby locations.
The IceCube Data Acquisition System: Signal Capture, Digitization, and Timestamping
Creators: name: The IceCube Collaboration
Publisher: name: arXiv
Year: 2008
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: IceCube is a km-scale neutrino observatory under construction at the South Pole with sensors both in the deep ice (InIce) and on the surface (IceTop). The sensors, called Digital Optical Modules (DOMs), detect, digitize and timestamp the signals from optical Cherenkov-radiation photons. The DOM Main Board (MB) data acquisition subsystem is connected to the central DAQ in the IceCube Laboratory (ICL) by a single twisted copper wire-pair and transmits packetized data on demand. Time calibration is maintained throughout the array by regular transmission to the DOMs of precisely timed analog signals, synchronized to a central GPS-disciplined clock. The design goals and consequent features, functional capabilities, and initial performance of the DOM MB, and the operation of a combined array of DOMs as a system, are described here. Experience with the first InIce strings and the IceTop stations indicates that the system design and performance goals have been achieved.
description: 42 pages, 20 figures, submitted to Nuclear Instruments and Methods A
Analysis of a drift-diffusion model for perovskite solar cells
Creators: name: Abdel, Dilara
name: Glitzky, Annegret
name: Liero, ##!Error: Attribute  Unknown!##
Publisher: name: Weierstrass Institute
Year: 2023
Subjects: subject: Drift-diffusion system
subject: perovskite solar cells
subject: charge transport
subject: existence and boundedness of weak solutions
subject: non-Boltzmann statistics
subject: 35K55
subject: 35B45
subject: 78A35
subject: 35Q81

description: This paper deals with the analysis of an instationary drift-diffusion model for perovskite solar cells including Fermi--Dirac statistics for electrons and holes and Blakemore statistics for the mobile ionic vacancies in the perovskite layer. The free energy functional is related to this choice of the statistical relations. Exemplary simulations varying the mobility of the ionic vacancy demonstrate the necessity to include the migration of ionic vacancies in the model frame. To prove the existence of weak solutions, first a problem with regularized state equations and reaction terms on any arbitrarily chosen finite time interval is considered. Its solvability follows from a time discretization argument and passage to the time-continuous limit. Applying Moser iteration techniques, a priori estimates for densities, chemical potentials and the electrostatic potential of its solutions are derived that are independent of the regularization level, which in turn ensure the existence of solutions to the original problem.
Decay-lepton correlations as probes of anomalous ZZH and gammaZH interactions in e+e- --> ZH with polarized beams
Creators: name: Rindani, Saurabh D.
name: Sharma, Pankaj
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We examine the contributions of various couplings in general ZZH and gammaZH interactions arising from new physics to the Higgs production process e+e- --> HZ, followed by the decay of the Z into a charged-lepton pair. We take into account possible longitudinal or transverse beam polarization likely to be available at a linear collider. We show how expectation values of certain simple observables in suitable combinations with appropriate longitudinal beam polarizations can be used to disentangle various couplings from one another. Longitudinal polarization can also improve the sensitivity for measurement of several couplings. A striking result is that using transverse polarization, one of the gammaZH couplings, not otherwise accessible, can be determined independently of all other couplings.
description: 17 pages, latex
title: Generalized Minimum Penalized Hellinger Distance Estimation and Generalized Penalized Hellinger Deviance Testing for Generalized Linear Models: The Discrete Case
Creators: name: Yan, Huey
Publisher: name: Utah State University
Year: 2001

description: In this dissertation, robust and efficient alternatives to quasi-likelihood estimation and likelihood ratio tests are developed for discrete generalized linear models. The estimation method considered is a penalized minimum Hellinger distance procedure that generalizes a procedure developed by Harris and Basu for estimating parameters of a single discrete probability distribution from a random sample. A bootstrap algorithm is proposed to select the weight of the penalty term. Simulations are carried out to compare the new estimators with quasi-likelihood estimation. The robustness of the estimation procedure is demonstrated by simulation work and by Hapel's α-influence curve. Penalized minimum Hellinger deviance tests for goodness-of-fit and for testing nested linear hypotheses are proposed and simulated. A nonparametric bootstrap algorithm is proposed to obtain critical values for the testing procedure.
Designing and Analyzing the PID and Fuzzy Control System for an Inverted Pendulum
Creators: name: Masoumian, Armin
name: kazemi, Pezhman
name: Montazer, Mohammad Chehreghani
name: Rashwan, Hatem A.
name: Valls, Domenec Puig
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: The inverted pendulum is a non-linear unbalanced system that needs to be controlled using motors to achieve stability and equilibrium. The inverted pendulum is constructed with Lego and using the Lego Mindstorm NXT, which is a programmable robot capable of completing many different functions. In this paper, an initial design of the inverted pendulum is proposed and the performance of different sensors, which are compatible with the Lego Mindstorm NXT was studied. Furthermore, the ability of computer vision to achieve the stability required to maintain the system is also investigated. The inverted pendulum is a conventional cart that can be controlled using a Fuzzy Logic controller that produces a self-tuning PID control for the cart to move on. The fuzzy logic and PID are simulated in MATLAB and Simulink, and the program for the robot is developed in the LabVIEW software.
description: 5 pages, Accepted for The 6th International Conference on Mechatronics and Robotics Engineering (ICMRE 2020)
The influence of career histories on team perfomance in new product development: a study of the video game industry
Creators: name: Riboldazzi, Federico <1981>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2011
Subjects: SECS-P/10 Organizzazione aziendale

description: The purpose of this research is to contribute to the literature on organizational demography and new product development by investigating how diverse individual career histories impact team performance. Moreover we highlighted the importance of considering also the institutional context and the specific labour market arrangements in which a team is embedded, in order to interpret correctly the effect of career-related diversity measures on performance.
The empirical setting of the study is the videogame industry, and the teams in charge of the development of new game titles. Video games development teams are the ideal setting to investigate the influence of career histories on team performance, since the development of videogames is performed by multidisciplinary teams composed by specialists with a wide variety of technical and artistic backgrounds, who execute a significant amounts of creative thinking. We investigate our research question both with quantitative methods and with a case study on the Japanese videogame industry: one of the most innovative in this sector. Our results show how career histories in terms of occupational diversity, prior functional diversity and prior product diversity, usually have a positive influence on team performance. However, when the moderating effect of the institutional setting is taken in to account, career diversity has different or even opposite effect on team performance, according to the specific national context in which a team operates.
Profiles of permutations
Creators: name: Lugo, Michael
Publisher: name: arXiv
Year: 2009
Subjects: subject: Combinatorics (math.CO)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 05A15, 05A16, 60C05

description: This paper develops an analogy between the cycle structure of, on the one hand, random permutations with cycle lengths restricted to lie in an infinite set $S$ with asymptotic density $σ$ and, on the other hand, permutations selected according to the Ewens distribution with parameter $σ$. In particular we show that the asymptotic expected number of cycles of random permutations of $[n]$ with all cycles even, with all cycles odd, and chosen from the Ewens distribution with parameter 1/2 are all ${1 \over 2} \log n + O(1)$, and the variance is of the same order. Furthermore, we show that in permutations of $[n]$ chosen from the Ewens distribution with parameter $σ$, the probability of a random element being in a cycle longer than $γn$ approaches $(1-γ)^σ$ for large $n$. The same limit law holds for permutations with cycles carrying multiplicative weights with average $σ$. We draw parallels between the Ewens distribution and the asymptotic-density case and explain why these parallels should exist using permutations drawn from weighted Boltzmann distributions.
description: 23 pages, 1 figure. Submitted to Electronic Journal of Combinatorics
title: Lifetime Estrogen Exposure and Brain-Derived Neurotrophic Factor: Implications for Cognitive Decline in Late Life
Creators: name: Matyi, Joshua M.
Publisher: name: Utah State University
Year: 2018

description: The Cache County Study on Memory in Aging (CCSMA) is a longitudinal population-based study which took place in Cache County, Utah. The study followed 5092 older-adult residents (aged 65+) for approximately 12 years to examine risk and protective factors for dementia. Participants completed dementia screening and follow-up assessments across four triennial visits. Additionally, researchers gathered information regarding demographics, reproductive history (e.g. age of menopause; hormone replacement therapy [HRT]) and other health-related factors, such as physical activity. Genotyping of DNA was completed for a genetic variation of genes for brain-derived neurotrophic factor (BDNF), a protein found in the brain associated with neuronal health and survival.
Estrogen has been associated with cognitive health and has been shown to interact with BDNF in the brain to promote neuronal survival. The current research investigated the associations between estrogen, BDNF, and cognitive decline in older adult women from the CCSMA. An examination of how reproductive history, including the reproductive window (age of menarche to menopause) and use of HRT, affects the cognitive health of women in older adulthood can provide a clearer understanding of how estrogen exposure across the lifespan contributes to cognition in late life. This research can be helpful in determining the implications of events such as pregnancy, breastfeeding, surgical menopause and use of HRT on cognitive decline. Additionally, an investigation of how these reproductive factors interact with BDNF genetics is important to understand gene-by-environment interactions.
The results of the current project demonstrated that increased lifelong estrogen exposure, both in the form of the reproductive window and HRT use, had small cognitive benefits for women in late life. Additionally, it was shown that women who initiated HRT use closer to menopause had increased cognitive status compared to those who initiated later. The specific BDNF gene under investigation was not associated with cognitive status in late life, neither was the interaction between BDNF and lifetime estrogen exposure. This research contributes to the discussion of sex-dependent factors of cognitive health and can help provide a better understanding late life cognitive decline.
title: Quaternary Incision, Salt Tectonism, and Landscape Evolution of Moab-Spanish Valley, Utah
Creators: name: Mauch, James P.
Publisher: name: Utah State University
Year: 2018

description: To study the history of processes that shape the Earth’s surface, geologists look for markers in the landscape that they can date and use to measure change. Rivers leave such markers in their deposits and terrace landforms and in the overall shape of their elevation profile from head to toe. This thesis uses luminescence and cosmogenic methods to date the sediment in terraces to determine when the river deposited it. Field mapping and global positioning system (GPS) surveying are also used to measure the distance between terrace levels to quantify how much change has occurred. This study seeks to answer questions about when, how quickly, and why streams near Moab in Utah’s Canyonlands region have incised into bedrock. It seeks also to determine the history, rates, and patterns of the active and incremental sinking of Moab and Spanish valleys.
The results from this work show that the incision of canyons along Mill and Pack creeks upstream from Moab accelerated around 200,000 years ago to between 0.44 and 0.62 millimeters per year (mm/yr). The sinking of Moab and Spanish valleys also appears to have quickened around the same time and has occurred at up to 1.35 mm/yr in Moab Valley and around 0.45 mm/yr in Spanish Valley over the last 100,000 years. The Kayenta Heights fault zone (KHFZ) accommodates part of the sinking of Moab Valley and has slipped at an average rate of 0.44 mm/yr in the last 100,000 years. This study’s mapping of the length and width of individual fault strands supports prior interpretations that the KHFZ does not pose an earthquake hazard, though it can still be expected to produce active rock fall and rupture the ground surface locally.
That the sinking of Moab and Spanish valleys and the down-cutting of the upstream canyons has occurred at similar rates, and may indeed have sped up at a similar time in the past, indicates a linkage of the two processes. This is consistent with an existing hypothesis that Moab and Spanish valleys are sinking because groundwater is dissolving the buried salt deposits and transporting them out through the Colorado River. This process is able to continue because as the Colorado River and its tributaries incise lower into the landscape, groundwater follows and can reach greater depths in the salt deposits. The results of this study paint a picture of the recent and accelerated sinking of Moab and Spanish valleys, which has occurred jointly with incision of the regional drainage network. This acceleration of incision, which has been documented throughout the Canyonlands region, may relate to the Colorado River’s carving of Grand Canyon around 6 million years ago or may have come from a more recent and unknown downstream source.
title: Importance of Exposure Time on Digital Image Correlation (DIC) at Extreme Temperatures
Creators: name: Thai, Thinh Quang
Publisher: name: Utah State University
Year: 2018

description: Extreme temperatures have increasingly played an important role in engineering applications, including leading edges during hypersonic flight, spacecraft re-entry, and propulsion systems. In order to design for such thermo-mechanical conditions, materials must be characterized using suitable measurement methods. DIC is a popular and versatile method in full-field measurement. In brief, DIC compares images of a sample between its undeformed and deformed state in order to get displacement and strain field maps. Since the images are acquired from digital cameras, it is important to have high contrast images for meaningful correlation. Exposure time is a pivotal camera setting relating to camera sensitivity. Alteration in exposure time results in variation of image contrast, thereby affecting DIC correlation. Also, it is well known that at extreme temperatures, materials emit light which can saturate DIC camera sensors, but the light can be mitigated using optical bandpass filters. In previous work, many have shown that blue bandpass filters can effectively extend the temperature range of DIC, and our lab has shown that ultraviolet (UV) filters can extend the range further.
In this thesis, four different temperatures: room temperature, 1300°C, 1450°C, and 1600°C were tested by rigid-motion experiments. At each temperature level, UV images were acquired in order to examine the variation of DIC error over the whole range of exposure time. UV images were acquired at exposure times ranging from 500μs to 61,000μs, which are the minimum and maximum possible values for the cameras used in this thesis. The results showed that there were higher errors of UV-DIC at extremely dark or bright exposure times where as errors were generally insignificant at intermediate exposure times. In order to perform meaningful DIC up to 1600oC, the exposure time for the camera used in this thesis is suggested to be set between 10,000μs and 40,000μs.
On Large Ground Station Antennas as Potential Radar Targets for Biomass
Creators: name: Klooster, Cornelis G. M. van 't
name: van Ardenne, Arnold
Publisher: name: arXiv
Year: 2021
Subjects: subject: Space Physics (physics.space-ph)
subject: Systems and Control (eess.SY)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Radio-telescopes or ground-station antennas can, if pointed, act as a radar target with high radar cross-section (RCS). Space-based Synthetic Aperture Radar (SAR) data confirmed it at 5:3GHz for a modified ground-station antenna. Operational ground-station antennas cannot be modified. The latter antennas might operate at frequencies well above the radar band. The radar signal could be scattered with high RCS from such an antenna, with less influence due to a load (receiver). The antenna geometry should be precisely known to derive its RCS. BIOMASS SAR operates near 435 MHz (P-band). Results are given, also for BIOMASS antenna itself. Large antennas in an array as in Westerbork are of potential interest, located on an East-West line, nearly perpendicular to ascending and descending polar orbits. Related material is discussed.
description: 8 pages 16 figures
MEANING OF CULTURE MALAY PALEMBANG LANGUAGE (FROM SYSTEMATIC FUNCTIONAL LINGUISTICS AND SEMANTICS)
Creators: name: DHENI HERMAEN
name: HUSNI THAMRIN
name: TIA IRAWAN SPD, M.AP
Publisher: name: Zenodo
Year: 2024
Subjects: Perspective Meaning; SFL; Semantics; Verb Transitivity; Malay Language.

description: Abstract

Function and use of language as culture is in conveying experiences, understanding and perceptions of life carried out transitively. The aim of this research is to discuss the transitivity of Palembang Malay and Functional Linguistics. The research method uses a mixed method approach. Sources in the form of Palembang Malay language conversations and direct conversational dialogue. Through the Palembang language dialogue stages. The results were that six existing transitivity processes were found based on transitivity stages, namely: (1). The material process stages total 9 clauses, (2). Stages of mental process 6 clauses, (3). Stages of verbal process 4 clauses, (4). Stages of the behavior process 3 clauses, (5). Stages of the existential process 1 clause, (6). Stages of the relational process 1 clause. From the meaning perspective; event and action are 14, cognition and functional meaning are 6, the abstract meaning is 0, and the social-behavioral is 3. Eggins states that the transitivity process of Palembang Malay is apart from actions that go through the process stages that have been directed to the end of the functions and uses that lead to the meaning contained in the conversation. Allan refers more to the series of meanings implied by the Palembang Malay language conversation process compared to the actual process of the verbal form of conversation.
STRATEGIC MANAGEMENT IN DEVELOPING EDUCATION QUALITY AT MADRASAH IBTIDAIYAH NEGERI 2 TANGERANG
Creators: name: JONED CEILENDRA SAKSANA
name: VERA YULIA HARMAYANTHI
name: LUTFI HARDIYANTO
name: ADJIE SAPTA
name: MOCHAMMAD SUBAGIO, MM
Publisher: name: Zenodo
Year: 2024
Subjects: Strategic Management, Developing, Quality of Education, Madrasah.

description: Abstract

The purpose of this research is to determine the strategic management implemented by Madrasah Ibtidaiyah Negeri 2 Tangerang in developing the quality of education. The research method uses a qualitative approach that describes the findings. Data collection techniques include in-depth interviews with respondents, observation by observing objects that occur in the field, documentation studies in the form of archives, meeting notes, and books related to the research focus. Conclusions in terms of strategic planning for developing educational quality which is carried out through mechanisms and stages: SWOT analysis. Formulation of strategic goals. Strategic Planning. Strategic Synchronization and Transformation. Strategic implementation. Strategic Implementation. Conclusions in developing educational quality through Curriculum and learning planning. Implementation of work programs in the field of student affairs, work programs in the field of human resources, work programs in the field of facilities and infrastructure, and work programs in the field of administration and finance. Evaluation of strategies in developing the quality of education through monthly monitoring mechanisms and every semester evaluation of learning, development of educational facilities, and human resource development. Furthermore, analysis through approaches to educators and education personnel for continuous improvement, in the aspects of learning quality and improving the quality of human resources.
PERFORMANCE ASSESSMENT OF THROTTLED ADAPTED LOAD BALANCING ALGORITHM WITH EFFICIENT CRITICALITY ORIENTED BROKER POLICY IN IaaS CLOUD
Creators: name: S. Shanmuga Priya
name: N. Priya
Publisher: name: Zenodo
Year: 2024
Subjects: Cloud Computing, Infrastructure as a Service, Load Balancing, Service Brokering Policy, Datacenter, Virtual Machines, Throttled Adapted Load Balancing, Efficient Criticality-Oriented Service Broker Policy.

description: Abstract

Cloud Computing is a multitenant technology that offers infrastructure as a Service (IaaS), in which routing the user's workload to the appropriate machine is one of the key factors of a cloud environment. One of the important activities in an IaaS cloud environment to be taken into account is the distribution of a user's workload across many heterogeneous resources, such as Data Centers (DC) and Virtual Machines (VM). Service Brokering Policies (SBP) and Load Balancing (LB) are the significant strategies used for workload distribution on the IaaS platform to improve the overall efficiency of the cloud system. In this study, the Efficient Criticality-Oriented Service Broker Policy (ECO-SBP) and the Throttled Adapted Load Balancing (TALB) algorithms are combined to carry out service brokering and load balancing among DCs and VMs, respectively, for the purpose of minimizing the Response Time (RT) and Data Center Processing Time (DCPT), reducing cost, minimizing Searching Time (ST) and overcoming the issue of load unbalancing. These strategies are implemented in the CloudAnalyst simulation tool and examined against some of the significant existing service brokering policies with load balancing strategies available in the CloudAnalyst tool.
Luminescent Defects in Single-Walled Carbon Nanotubes for Applications
Creators: name: Zaumseil, Jana
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Semiconducting single-walled carbon nanotubes show extraordinary electronic and optical properties, such as high charge carrier mobilities and diameter-dependent near-infrared photoluminescence. The introduction of sp3 defects in the carbon lattice of these nanotubes creates new electronic states that result in even further red-shifted photoluminescence with longer lifetimes and higher photoluminescence yield. These luminescent defects or organic color centers can be tuned chemically by controlling the precise binding configuration and the electrostatic properties of the attached substituents. This review covers the basic photophysics of luminescent sp3 defects, synthetic methods for their controlled formation and discusses their application as near-infrared single-photon emitters at room temperature, in electroluminescent devices, as versatile optical sensors, and as fluorophores for bioimaging and potential super-resolution microscopy.
EVALUATION OF THE USE OF SIMRS USING HUMAN, ORGANIZATION, TECHNOLOGY AND NET BENEFIT (HOT-FIT) METHODS AT RSIA ANANDA
Creators: name: Desy Lestari Suardi
name: Irwandy
name: Stang
name: Noer Bahri Noer
name: Syahrir Pasinringi
name: Fridawaty Rivai
Publisher: name: Zenodo
Year: 2024
Subjects: SIMRS, HOT-fit model, Net Benefit, Health Information System, RSIA Ananda.

description: Abstract

Management Information Systems (MIS) are an important foundation in improving the quality of services in hospitals. A SIM that is integrated and tailored to your needs simplifies operational processes and decision making. This research aims to analyze the influence of Human, Organizational and Technological factors on the Net Benefit of using the Hospital Management Information System (SIMRS) at RSIA Ananda. This study adopts the HOT-fit (Human-Organization-Technology fit) model as a theoretical framework for evaluating the effectiveness of health information system implementation. The research method used is a quantitative approach with a cross-sectional design. Data was collected through a survey of 151 SIMRS users at RSIA Ananda, including medical, administrative and management staff. Data analysis was carried out using the logistic regression test. The research results show that the three factors Human, Organizational and Technological have a positive and significant influence on the Net Benefit of using SIMRS. Human factors, which include system development, user attitudes and satisfaction, have an influence (p = 0.000). Organizational factors, including management support and organizational culture, show an influence of p = 0.000. Meanwhile, technology factors, including system quality, information and service quality, also contributed significantly (p= 0.001).