cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
CHARACTERIZATION OF NEW QUASI LINDLEY DISTRIBUTION BY TRUNCATED MOMENTS AND CONDITIONAL EXPECTATION OF ORDER STATISTICS
Creators: name: Ansari, Amir
name: Faizan, Mohammad
name: Rafiqullah Khan
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: New quasi Lindley distribution
Characterization
Truncated moments
Failure rate function
Reversed failure rate function
Order statistics

description: Characterization of a probability distribution plays an important role in probability and statistics. Before a particular probability distribution model is applied to fit the real world data, it is necessary to confirm whether the given probability distribution satisfies the underlying requirements by its characterization. The aim of this paper is to find characterization results New Quasi Lindley distribution. These results are established using the relation between truncated moments and failure rate functions and conditional expectation of adjacent order statistics. The first characterization result is based on relation between left truncation moment and failure rate function while the second result is based on relation between right truncated moment and reverse failure rate function. In the third characterization result we used conditional expectation of order statistics when the conditioned one is adjacent order statistics. Further, some of its important deductions are also discussed.
Measurement Error in Generalized Linear Models
Creators: name: Emami Neyestanak, Maryam
Publisher: name: University of Illinois at Chicago
Year: 2021
Subjects: Uncategorized

description: This research focused on the measurement error in the generalized linear models. We show the asymptotic statistical properties of the proposed estimations for the covariates in the presentence of measurement error. These estimators are based on conditional expectation and take different forms according to the measurement error density function. Our simulation study examines the sampling bias of parameter estimation in generalized linear models, including logistic and Poisson regression models. Our real data study compares estimators from measurement error models to naive estimators where the measurement errors have been ignored. We used data from the Framingham Heart Study and data from the study of diet (fat intake) and coronary heart disease.
Synthesis, Transport, and Passivation of Mercury Telluride Colloidal Quantum Dots for Infrared Detection
Creators: name: Mlynarski, Thomas Peter
Publisher: name: University of Illinois at Chicago
Year: 2021
Subjects: Uncategorized

description: Colloidal Quantum Dots (CQDs) are a nanoscale material exhibiting strong quantum confinement that alters the electronic structure of the corresponding bulk material. Mercury telluride is a semi-metal and in CQDs quantum confinement opens up the bandgap. The resulting ability to tune the band gap by adjusting the size of the CQDs makes HgTe a compelling material for infrared applications. However, CQDs present many challenges, including a large surface to volume ratio that complicates stability, doping, and transport. We demonstrate an improved synthesis to obtain CQDs for operation in short-wave (SWIR) to long-wave infrared (LWIR) bands (2.25 – 9 μm), with narrower absorption energy levels and higher signal to noise ratio (SNR). We find the CQD bandgap is dependent on the size and on the temperature. As expected the bandgap of the CQD decreases with increasing size, and similar to bulk mercury-cadmium-telluride (MCT), the bandgap increases with increasing temperature. To evaluate material parameters such as mobility, photoconductivity, spectral response, and carrier concentration, these CQDs are used to fabricate field effect transistor (FET) and photoconductor (PC) devices. We find that conduction is temperature activated which is consistent with hopping transport in a disordered solid. At higher temperature the hopping transport appears to transition to band transport. We further find CQDs are close to intrinsic when prepared but unintentionally p-doped with exposure to standard atmospheric conditions. To stabilize the p-doping, the films are encapsulated with aluminum oxide (Al2O3) and polymethyl methacrylate (PMMA). Al2O3 encapsulated films are found to be n-doped likely because of Al doping in the CQD. The PMMA did not successfully prevent the time-dependent p-doping.
Novel relations and new properties of confluent Heun's functions and their derivatives of arbitrary order
Creators: name: Fiziev, Plamen P.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 33E15, 33E20, 33E30

description: The present article reveals important properties of the confluent Heun's functions. We derive a set of novel relations for confluent Heun's functions and their derivatives of arbitrary order. Specific new subclasses of confluent Heun's functions are introduced and studied. A new alternative derivation of confluent Heun's polynomials is presented.
description: 8 pages, no figures, LaTeX file, final version
CONFIDENCE INTERVAL USING MAXIMUM LIKELIHOOD ESTIMATION FOR THE PARAMETERS OF POISSON TYPE LENGTH BIASED EXPONENTIAL CLASS MODEL
Creators: name: Singh, Rajesh
name: Badge, Preeti A.
name: Pritee Singh
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: Length biased exponential distribution
Software reliability growth model
Maximum likelihood estimation (MLE)
Confidence interval using MLE
Average length and coverage probability

description: In this research paper, Confidence interval using Maximum likelihood estimation is obtained for Poisson type Length biased exponential class for the parameters. Failure intensity, mean time to failure and likelihood function for the parameter is obtained. Confidence interval has been derived for parameters using maximum likelihood estimation. To study the performance of confidence interval, average length and coverage probability are calculated using Monte Carlo simulation technique. From the obtained intervals it is concluded that Confidence interval for the parameter perform better for appropriate choice of execution time and certain values of parameters.
Light-tunable charge density wave orders in MoTe2 and WTe2 single layers
Creators: name: Marini, Giovanni
name: Calandra, Matteo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: By using constrained density functional theory modeling, we demonstrate that ultrafast optical pumping unveils hidden charge orders in group VI monolayer transition metal ditellurides. We show that irradiation of the insulating 2H phases stabilizes multiple transient charge density wave orders with light-tunable distortion, periodicity, electronic structure and bandgap. Moreover, optical pumping of the semimetallic 1T' phases generates a transient charge ordered metallic phase composed of 2D diamond clusters. For each transient phase we identify the critical fluence at which it is observed and the specific optical and Raman fingerprints to directly compare with future ultrafast pump-probe experiments. Our work demonstrates that it is possible to stabilize charge density waves even in insulating 2D transition metal dichalcogenides by ultrafast irradiation.
description: Accepted for publication in Physical Review Letters
ANALYSIS OF EFFECTIVE SEED LINTER TECHNOLOGY IN COTTON GINNING ENTERPRISES
Creators: name: Ungarov, Azizbek
name: Xudayberdiev, Rustamjon
name: Eshmuratova, Iroda
Publisher: name: Zenodo
Year: 2025

description: In our republic, special attention is being paid to the introduction of modern resource-saving techniques and technologies for high-quality production of fiber and cotton products. This article talks about science-based modern techniques and technologies that improve the quality of seed and fluff
Replication studies and Open Science practices at the Laboratory for research of individual differences (LIRA)
Creators: name: Žeželj, Iris
name: Lazić, Aleksandra
Publisher: name: Zenodo
Year: 2023
Subjects: open science
replication crisis
reproducibility
open research

description: Slides of the invited talk given at the STRENTEX Open Science Forum on May 30, 2023. The first part of the presentation, delivered by Iris Žeželj, deals with the so-called replication crisis in psychological science and the replication studies that researchers at the Laboratory for Research of Individual Differences (LIRA) took part in. The second part of the presentation, delivered by Aleksandra Lazić, describes the Open Science practices LIRA researchers have adopted (open data, preprints, preregistration) and the Open Science services they developed (LIRA Faces Database, REPOPSI, xSample). This upload also contains the full event agenda.
A Variant RSA Acceleration with Parallelization
Creators: name: Liu, Jun-jie
name: Tsang, Kang-Too
name: Deng, Yu-Hui
Publisher: name: arXiv
Year: 2021
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: The standard RSA relies on multiple big-number modular exponentiation operations and longer key-length is required for better protection. This imposes a hefty time penalty for encryption and decryption. In this study, we analyzed and developed an improved parallel algorithm (PMKRSA) based on the idea of splitting the plaintext into multiple chunks and encrypt the chunks using multiple key-pairs. The algorithm in our new scheme is so natural for parallelized implementation that we also investigated its parallelization in a GPU environment. In the following, the structure of our new scheme is outlined, and its correctness is proved mathematically. Then, with the algorithm implemented and optimized on both CPU and CPU+GPU platforms, we showed that our algorithm shortens the computational time considerably, and it has a security advantage over the standard RSA as it is invulnerable to the common attacks. Finally, we also proved the feasibility of using our algorithm to encrypt large files through simulation. The results show that over the set of file size: 1 MB, 10 MB, 25 MB, 50 MB, 100 MB, the average encryption and decryption time of the CPU version is 0.2476s and 9.4476s, and for the CPU+GPU version, it is 0.0009s and 0.0618s, respectively.
เทคโนโลยีการวิเคราะห์กระบวนการ ตอนที่ 2.การนำมาใช้ในการผลิตยา Process Analytical Technology Part II. Implementation in Pharmaceutical Manufacturing
Creators: name: ลาวัลย์ ศรีพงษ์
Publisher: name: คณะเภสัชศาสตร์ ม.ศิลปากร/ โรงพิมพ์มิตรเจริญการพิมพ์ นครปฐม
Year: 2553
Subjects: เทคโนโลยีการวิเคราะห์กระบวนการ, กระบวนการผลิตยา PAT

description: 1(มค-ธค), 5, ไทยไภษัชยนิพนธ์
Predicting the Drug Release Kinetics of Matrix Tablets
Creators: name: Baeumer, Boris
name: Chatterjee, Lipika
name: Hinow, Peter
name: Rades, Thomas
name: Radunskaya, Ami
name: Tucker, Ian
Publisher: name: arXiv
Year: 2008
Subjects: subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: In this paper we develop two mathematical models to predict the release kinetics of a water soluble drug from a polymer/excipient matrix tablet. The first of our models consists of a random walk on a weighted graph, where the vertices of the graph represent particles of drug, excipient and polymer, respectively. The graph itself is the contact graph of a multidisperse random sphere packing. The second model describes the dissolution and the subsequent diffusion of the active drug out of a porous matrix using a system of partial differential equations. The predictions of both models show good qualitative agreement with experimental release curves. The models will provide tools for designing better controlled release devices.
description: 17 pages, 7 figures; Elaborated at the first Workshop on the Application of Mathematics to Problems in Biomedicine, December 17-19, 2007 at the University of Otago in Dunedin, New Zealand
COST & PROFIT ANALYSIS OF TWO-DIMENSIONAL STATE M/M/2 QUEUING MODEL WITH CORRELATED SERVERS, MULTIPLE VACATION, BALKING AND CATASTROPHES
Creators: name: Sharvan Kumar
name: , Indra
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: Correlated servers
Multiple vacation
Balking
Catastrophes

description: The present study obtains the time-dependent solution of a two-dimensional state Markovian queuing model with infinite capacity, correlated servers, multiple vacation, balking and catastrophes. Inter arrival times follow an exponential distribution with parameters λ and service times follow Bivariate exponential distribution BVE (μ, μ, ν) where μ is the service time parameter and ν is the correlation parameter. Both the servers go on vacation with probability one when there are no units in the system and the servers keeps on taking a sequence of vacations of random length each time the system becomes empty, till it finds at least one unit in the system to start each busy period referred as multiple vacation. The unit finds a long queue and decides not to join it; may be considered as balking. All the units are ejected from the system when catastrophes occur and the system becomes temporarily unavailable. The system reactivates when new units arrive. Occurrence of catastrophes follow Poisson distribution with rate ξ. Laplace transform approach has been used to find the time-dependent solution. By using differential-difference equations, the recursive expressions for probabilities of exactly i arrivals and j departures by time t are obtained. The probabilities of this model are consistent to the results of “Pegden & Rosenshine”. The model estimates the total expected cost, total expected profit and obtained the optimal values by varying time t for cost and profit. These important key measures give a greater understanding of the model behaviour. Numerical analysis and graphical representations have been done by using Maple software.
Decision Making Through Fuzzy Linear Programming Approach
Creators: name: Pandit U. Chopade
name: Janolkar, Mahesh M.
name: Kirankumar L. Bondar
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: Linear Programming problem
S-curve membership function
Uncertainty
Mix-Product selection
Decision maker

description: In this study a real world industrial MPS problem is addressed using the SMF approach. A decision maker, analyst and implementer, all play significant roles in making judgements in an uncertain environment, which is where this difficulty arises in the chocolate manufacturing business. As analysts our goal is to identify a solution with a higher LOS that will enable the decision maker to reach a conclusion. Because all the coefficients including the goals, technical and resource factors are well defined. The MPS problem is taken into consideration. With 24 constraints and 6 variables, this is regarded as one of the sufficiently large problem, which LOV is appropriate for getting satisfactory OR can be determined by a decision maker. To increase the satisfactory income, the decision maker can also advice to the analyst some feasible modification to FI. This collaborative process between the analyst, decision maker and implementer must continue until the best possible solution is found and put into action.
Superconductivity and parity preservation in as-grown In islands on InAs nanowires
Creators: name: Bjergfelt, Martin Saurbrey
name: Carrad, Damon J.
name: Kanne, Thomas
name: Johnson, Erik
name: Fiordaliso, Elisabetta M.
name: Jespersen, Thomas Sand
name: Nygård, Jesper
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report in-situ synthesis of crystalline indium islands on InAs nanowires grown by molecular beam epitaxy. Structural analysis by transmission electron microscopy showed that In crystals grew in a tetragonal body-centred crystal structure within two families of orientations relative to wurtzite InAs. The crystalline islands had lengths < 500 nm and low-energy surfaces, suggesting that growth was driven mainly by surface energy minimization. Electrical transport through In/InAs devices exhibited Cooper pair charging, evidencing charge parity preservation and a pristine In/InAs interface, with an induced superconducting gap ~ 0.45 meV. Cooper pair charging persisted to temperatures > 1.2 K and magnetic fields ~ 0.7 T, demonstrating that In/InAs hybrids belong to an expanding class of semiconductor/superconductor hybrids operating over a wider parameter space than state-of-the-art Al-based hybrids. Engineering crystal morphology while isolating single islands using shadow epitaxy provides an interesting alternative to previous semiconductor/superconductor hybrid morphologies and device geometries.
description: Published in Nano Letters: https://pubs.acs.org/doi/10.1021/acs.nanolett.1c02487
วัคซีนไข้หวัดใหญ่ตามฤดูกาล Seasonal Influenza Vaccine
Creators: name: เชาวลิต มณฑล ศราวุธ เพิ่มพูนคุณารักษ์
Publisher: name: คณะเภสัชศาสตร์ ม.ศิลปากร/ โรงพิมพ์มิตรเจริญการพิมพ์ นครปฐม
Year: 2553
Subjects: วัคซีนไข้หวัดใหญ่, ไข้หวัด 2009, วัคซีนเชื้อเป็น/เชื้อตาย,ภูมิคุ้มกัน

description: 1(มค-ธค), 5, ไทยไภษัชยนิพนธ์
DENSITY BY MODULI AND LACUNARY STATISTICAL CONVERGENCE OF DOUBLE SEQUENCES
Creators: name: A.G.K. Ali
name: A.M. Brono
name: A. Masha
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: modulus function
statistical convergence
lacunary strong convergence
lacunary statistical convergence
double sequence

description: In this paper, we introduced and studied the concept of lacunary statistical convergence of double sequence with respect to modulus function where the modulus function is an unbounded double sequence. We also introduced the concept of lacunary strong convergence of double sequence via modulus function. We further characterized those lacunary convergence of double sequence for which the lacunary statistically convergent of double sequence with respect to modulus function equals statistically convergent of double sequence with respect to modulus function. Finally, we established some inclusion relations between these two lacunary methods and proved some essential analogue for double sequence.
title: Lesiones pancreáticas quísticas menos frecuentes: más allá del pseudoquiste
Creators: name: Sanchez Oro, Raquel
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Cysts
subject: Neoplasia
subject: Congenital
subject: Education
subject: Technical aspects
subject: Ultrasound
subject: CT
subject: MR
subject: Pancreas
subject: Abdomen

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
- Describir los hallazgos radiológicos en las diferentes técnicas de imagen (US,
TCMD y RM) de las lesiones quísticas pancreáticas no correspondientes con pseudoquistes. - Discutir las características propias de los diferentes tipos de...
GAMER: a GPU-Accelerated Adaptive Mesh Refinement Code for Astrophysics
Creators: name: Schive, Hsi-Yu
name: Tsai, Yu-Chih
name: Chiueh, Tzihong
Publisher: name: arXiv
Year: 2009
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the newly developed code, GAMER (GPU-accelerated Adaptive MEsh Refinement code), which has adopted a novel approach to improve the performance of adaptive mesh refinement (AMR) astrophysical simulations by a large factor with the use of the graphic processing unit (GPU). The AMR implementation is based on a hierarchy of grid patches with an oct-tree data structure. We adopt a three-dimensional relaxing TVD scheme for the hydrodynamic solver, and a multi-level relaxation scheme for the Poisson solver. Both solvers have been implemented in GPU, by which hundreds of patches can be advanced in parallel. The computational overhead associated with the data transfer between CPU and GPU is carefully reduced by utilizing the capability of asynchronous memory copies in GPU, and the computing time of the ghost-zone values for each patch is made to diminish by overlapping it with the GPU computations. We demonstrate the accuracy of the code by performing several standard test problems in astrophysics. GAMER is a parallel code that can be run in a multi-GPU cluster system. We measure the performance of the code by performing purely-baryonic cosmological simulations in different hardware implementations, in which detailed timing analyses provide comparison between the computations with and without GPU(s) acceleration. Maximum speed-up factors of 12.19 and 10.47 are demonstrated using 1 GPU with 4096^3 effective resolution and 16 GPUs with 8192^3 effective resolution, respectively.
description: 60 pages, 22 figures, 3 tables. More accuracy tests are included. Accepted for publication in ApJS
Pretty from a Distance: (stories)
Creators: name: Frangello, Gina K
Publisher: name: University of Illinois at Chicago
Year: 2021
Subjects: Uncategorized

description: A collection of short stories, Pretty from a Distance deals with characters coming to terms with past demons and decisions, while negotiating sexual and romantic power dynamics and familial relationships. Comprised mainly of stand-alone stories, the collection also includes a triptych chronicling the same characters at different stages of life and the ways in which an intense but destructive affair between a fortysomething attorney and a dancer in her early twenties sends rippling effects into their futures. Due to the power imbalances of age and money, as well as echoes of the young woman’s abuse history, their disastrous ending impacts both the aging attorney’s efforts to single-parent his teenage daughter and his young lover’s ability to forge a “normal” life that does not fetishize her damage. Other stories also concern sexual politics and gender roles: a preschool boy develops an alternate feminine identity; a married couple immersed in the BDSM scene of Washington, DC, moves to a rural community as each privately unravels following the wife’s late-stage cancer diagnosis; a young woman in Greenwich Village circa 1968 must face that, beneath the façade of sophisticated, bohemian intellectualism, the father of her newborn daughter is an addict and saves herself by abandoning them both. In two stories incorporating magical realism, a conjoined twin views her sister as an albatross to sexual freedom only to miss her intensely once a plan to kill her comes to fruition; and a group of longtime friends are haunted by the cloying fiancé of their deceased friend, driving them all apart. The collection as a whole examines the intersection of victimization and agency, maintaining a feminist lens while also interrogating the ways women are complicit in patriarchal systems that oppress them and set them against each other.
DESIGNING A HYBRID SINGLE SAMPLING PLAN FOR LIFE-TIME ASSESSMENT USING THE EXPONENTIALRAYLEIGH DISTRIBUTION
Creators: name: Radhika, A.
name: Nandhini, M.
name: Jeslin, J.
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: Reliability Sampling
Exponential Rayleigh Distribution
Median lifetime
Reliable Single Sampling
Single Sampling Plan

description: The approach of statistical quality control known as “product control” deals with the steps involved in making judgments on one or more batches of completed goods produced by production processes. One of the main categories of product control is sampling inspection by variables, which includes processes for selecting numerous individual units based on sample measurements for a quality characteristic under investigation. These approaches are predicated on the knowledge of the functional form of the probability distribution and the presumption that the quality feature is measured on a continuous scale. The literature on product control contains inspection techniques that were created with the implicit presumption that the quality characteristic is distributed normally with the associated attributes. In this study, a single variable sampling plan is developed and assessed under the assumption that the quality characteristic will be distributed using an Exponential-Rayleigh distribution. This article discusses the development of reliability sampling plans for intermittent test batches using type-I and type-II censoring data. To build a sampling strategy using the Exponential-Rayleigh distribution, this work offers a two-parameter continuous probability distribution. One of the main categories of acceptance sampling is sampling inspection by variables, which involves processes for making decisions regarding the disposition of numerous individual units based on sample measurements of those units for a quality feature under investigation. Assume that the sample inspection’s number of defective items follows the Poisson distribution. The suggested SSP’s ideal parameters are determined using a multi-objective genetic algorithm, which is concerned with concurrently minimizing the average number of samples and inspection costs a maximizing the likelihood of the acceptance sampling plan. The Rayleigh distribution is an appropriate model for life-testing studies, and the Exponential Rayleigh Distribution is studied as a model for a lifetime random variable. The paper also analyses the effectiveness of reliable single sampling plans designed using the median lifetime of products. The efficiency of these sampling plans is evaluated in terms of sample size and sampling risks. Poisson probabilities are used to determine the parameters of the sampling plans, to protect both producers and consumers from risks. For manufacturing enterprises to analyze the viability of the sample plan, necessary tables and procedures are constructed with acceptable examples.
What if Planck had known about these calculations?
Creators: name: de Oliveira, Marcos Gil
name: Dechoum, Kaled
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: History and Philosophy of Physics (physics.hist-ph)
subject: FOS: Physical sciences

description: Here we present some results that would possibly have attracted the attention of the physics community in the early days of quantum mechanics in such a way that its development could have been different from what we see today. We will first present a derivation of Planck's blackbody spectrum radiation without the hypothesis of quantized energy levels of the oscillator, the only additional hypothesis to the classical theory being the existence of zeropoint fluctuations in the electromagnetic field, and this would stand as a nontrivial vacuum which could be inferred by classical means. After doing this, we derive the Unruh-Hawking effect for the electromagnetic field in a purely undulatory context, without dualities and without photons, and one question, among many others, arises after these statements: What would be the development of quantum mechanics if Planck was aware of these possibilities?
description: 13 pages
BUG'DOY DONINI SIFATINI FIZIK-KIMYOVIY USULLAR YORDAMIDA ANIQLASh
Creators: name: Tuxtamishev, S.S.
name: Jurabekov, X.D.
Publisher: name: Zenodo
Year: 2025

description: Dоnni sаqlаshdаgi bu yо`qоtishlаr qishlоq xо`jаligining g`аllа hоsildоrligini оshirish vа uning miqdоrini kо`pаytirish bо`yichа bаrchа yutuqlаrini yо`qqа chiqаrishi, dоnni etishtirish vа hоsilni yig`ib оlishgа qilingаn mehnаtni qаdrsizlаntirishi mumkin.Dоnni sаqlаsh - bu dоnning о`zigа xоsligini hаmdа fizikаviy, kimyоviy vа biоlоgik оmillаrni dоn hоlаtigа tа`sirini о`rgаnuvchi fаndir.
DESIGNING OF PHASE II ARL-UNBIASED 𝑆²-CHART WITH IMPROVED PERFORMANCE USING REPETITIVE SAMPLING
Creators: name: Sonam Jaiswal
name: Nirpeksh Kumar
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: Average run length
average sample number
average run length-unbiased
Control chart
in-control and out-of-control performances
Process variability

description: In this paper, we consider a two-sided Phase II S²-chart with probability limits because the surveillance of both an increase and decrease in the process variance plays a decisive role in a continuous quality improvement program. We propose a two-sided average run length unbiased S²-chart under the repetitive sampling with probability limits for a fixed in-control average run length and average sample size to eliminate the average run length biasedness. It is well established that the Shewhart-type charts are less sensitive to detect small to moderate changes in the process parameters. Therefore, a repetitive sampling scheme is taken into consideration to improve the S²-chart’s ability to detect changes in the process variance. Under the repetitive sampling methodology, the detection ability of the chart is improved by using more than one samples if the first sample does not provide sufficient evidence to decide whether the process is in-control or out-of-control. The proposed chart is compared with the existing charts, such as the equal tailed standard Shewhart S²-chart and unequal tailed S²-chart under repetitive sampling. Results show that the proposed chart is more efficient than the existing chart. Finally, an illustration has been provided in the favor of the proposed chart with the help of a published dataset.
title: Συντήρηση συλλογής λίθινων γλυπτών του Μουσείου Αρχαιολογίας και Ιστορίας της Τέχνης του ΕΚΠΑ.
title: Conservation report on a collection of stone sculptures from the "Archeology and History of Art Museum" ofNKUA
titleType: AlternativeTitle
Creators: name: Παππάς, Κωνσταντίνος
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2023
Subjects: Λίθινα γλυπτά
Λίθος
Μάρμαρο
Συντήρηση λίθου

description: Στο πλαίσιο της πρακτικής άσκησης στο εργαστήριο συντήρησης του Μουσείο Αρχαιολογίας και Ιστορίας της Τέχνης του ΕΚΠΑ ανατέθηκαν εργασίες συντήρησης στην συλλογή λίθινων αντικειμένων του μουσείου. Από την συλλογή των δεκαοκτώ λίθινων γλυπτών, έγινε η επιλογή των εργασιών συντήρησης δύο αντικειμένων για εκπόνηση της παρούσας εργασίας. Το πρώτο αντικείμενο που επιλέχθηκε ήταν ένας ναΐσκος της αρχαίας θεότητας Κυβέλης και το δεύτερο ένα τμήμα ανάγλυφης σκηνής κυνηγιού Ρωμαϊκής εποχής. Τα δύο αυτά αντικείμενα παρουσίαζαν όλους τους τύπους φθοράς και διάβρωσης που συναντήθηκαν στα υπόλοιπα αντικείμενα της συλλογής, και λόγω αυτού του γεγονότος έγινε η επιλογή εστίασης σε αυτά. Ακολουθήθηκε μια σειρά από εργασίες συντήρησης για την ανάδειξη των αντικειμένων. Αρχικώς έγινε η καταγραφή του αντικειμένου, ύστερα για την διαπίστωση του λίθου και των μορφών διάβρωσης που παρουσίαζαν, έγιναν αναλύσεις με φασματόμετρο φθορισμού με σκέδαση ακτινών Χ (XRF) . Στην συνέχεια ακολούθησαν οι μηχανικές εργασίες καθαρισμού για την αφαίρεση των ρίπων από την επιφάνεια των γλυπτών αλλά και την αφαίρεση των κρουστών που είχαν επικαθήσει στην επιφάνεια τους, ενώ έγιναν και χημικές επεμβάσεις για την απομάκρυνση βιολογικών παραγόντων διάβρωσης. Οι εργασίες θεωρήθηκαν επιτυχείς και περατώθηκαν. Τέλος, έγινε αποτίμηση της αποτελεσματικότητας των εργασιών από τον υπεύθυνο συντήρησης του εργαστηρίου για την ανάδειξη των γλυπτών και την προετοιμασία τους για έκθεση στο μουσειακό περιβάλλον.
title: ¿Qué es lo que veo?: hemorragia cerebral o extravasación de contraste.
Creators: name: Borja Consigliere, Augustin
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Emergency
subject: Neuroradiology brain
subject: MR
subject: CT

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
Hacer el diagnóstico diferencial entre extravasación de contraste y transformación hemorrágica en pacientes que presentan zonas de hiperdensidad en TC cerebral posterior a la realización de procedimientos intervencionistas angiográficos....
Size-Based Spectrophotometric Analysis of the Polana-Eulalia Complex
Creators: name: McClure, Lucas
name: Emery, Josh
name: Thomas, Cristina
name: Walsh, Kevin
name: Williams, Riley
Publisher: name: arXiv
Year: 2024
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The Polana-Eulalia Complex (PEC) is an Inner Main Belt, C-complex asteroid population that may be the source of the near-Earth asteroid spacecraft mission targets (101955) Bennu and (162173) Ryugu. Here, we report a size-based investigation of the visible (VIS; 0.47 -- 0.89 um) spectrophotometric slopes of the PEC's constituent families, the New Polana and Eulalia Families. Using two releases of the Sloan Digital Sky Survey's Moving Object Catalog as well as the 3rd data release of the Gaia catalog, we present evidence of size-based slope variability within each family. We find that Eulalia family members exhibit lower average slopes than Polana family members in all catalogs' samples, particularly for objects < 9 km in diameter. We are unable to conclude that VIS slope distinguishability between the families is statistically significant, but we explore a potential cause of the bulk slope differences between the PEC families, in addition to providing commentary on size-slope trends generally.
description: 32 pages, 18 figures, 4 tables, Accepted by Icarus on 17 September 2024
title: Utilidad de la RM intestinal como herramienta diagnóstica en los procesos de obstrucción y suboclusión intestinal. Descripción de nuestra experiencia.
Creators: name: Herraiz Hidalgo, Luis
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: Abdomen
subject: Small bowel
subject: Gastrointestinal tract
subject: MR
subject: Diagnostic procedure
subject: Contrast agent-oral
subject: Contrast agent-intravenous
subject: Dilatation
subject: Obstruction / Occlusion
subject: Motility

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
Realizamos en este trabajo una revisión de la bibliografía existente al respecto de la utilidad del empleo de la RM intestinal para el diagnóstico de procesos suboclusivos u obstructivos,
con especial atención al empleo de técnicas de imagen...
Reexamination of vacuum-polarization corrections to the self-energy in muonic bound systems
Creators: name: Ohayon, B.
name: Jentschura, U. D.
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: In muonic bound systems, the dominant radiative correction is due to vacuum polarization. Yet, for the interpretation of precision experiments, self-energy effects are also important. In turn, additional vacuum-polarization loops perturb the self-energy. Here, we show that combined self-energy vacuum-polarization effects can perturb the bound-state self-energy at the percent level in one-muon bound systems with nuclear charges Z = 1-6. We also update previous treatments of the corrections for muonic hydrogen, muonic deuterium, and muonic helium bound systems.
description: 11 pages; RevTeX
DEVELOPING A NEW HUNTSBERGER TYPE SHRINKAGE ESTIMATOR FOR THE ENTROPY OF EXPONENTIAL DISTRIBUTION UNDER DIFFERENT LOSS FUNCTIONS
Creators: name: Sahni, Priyanka
name: Kumar, Rajeev
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: Exponential distribution
entropy function
shrinkage estimation
progressive censoring type sample
LINEX loss function
squared error loss function

description: The aim of the paper is to develop a new Huntsberger type shrinkage estimator for the entropy function of the exponential distribution. The present paper proposes a Huntsberger type shrinkage estimator for the entropy function of the exponential distribution. This Huntsberger type shrinkage entropy estimator is based on test statistic, which eliminates arbitrariness of choice of shrinkage factor. For the developed estimator risk expressions under LINEX loss function and squared error loss function have been calculated. To assess the efficacy of the proposed estimator, numerical computations are performed, and graphical analysis is carried out for risk and relative risks for the proposed estimator. It is also compared with the existing best estimator for distinct degrees of asymmetry and different levels of significance. Based on the criteria of relative risk, it is found that the proposed Huntsberger type shrinkage estimator is better than the existing estimator for the entropy function of the exponential distribution for smaller values of level of significance and degrees of freedom.
title: Síndrome del ligamento arcuato medio. Una causa infrecuente de dolor abdominal.
Creators: name: Caminero Pardo, Luis
Publisher: name: Sociedad Española de Radiología Médica
Year: 2014
Subjects: subject: CT-Angiography
subject: CT
subject: Arteries / Aorta
subject: Anatomy
subject: Abdomen

description: Objetivo docente
Revisión del tema
Conclusiones
Bibliografía
description: Objetivo docente:
Revisar el síndrome del ligamento arcuato medio como causa infrecuente de dolor abdominal mediante la ilustración de casos de nuestro...
Performance of scintillation materials at cryogenic temperatures
Creators: name: Mikhailik, V. B.
name: Kraus, H.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: An increasing number of applications of scintillators at low temperatures, particularly in cryogenic experiments searching for rare events, has motivated the investigation of scintillation properties of materials over a wide temperature range. This paper provides an overview of the latest results on the study of luminescence, absorption and scintillation properties of materials selected for rare event searches so far. These include CaWO4, ZnWO4, CdWO4, MgWO4, CaMoO4, CdMoO4, Bi4Ge3O12, CaF2, MgF2, ZnSe and AL2O3-Ti. We discuss the progress achieved in research and development of these scintillators, both in material preparation and in the understanding of scintillation mechanisms, as well as the underlying physics. To understand the origin of the performance limitation of self-activated scintillators we employed a semi-empirical model of conversion of high energy radiation into light and made appropriate provision for effects of temperature and energy transfer. We conclude that the low-temperature value of the light yield of some modern scintillators, namely CaWO4, CdWO4 and Bi4Ge3O12, is close to the theoretical limit. Finally, we discuss the advantages and limitations of different materials with emphasis on their application as cryogenic phonon-scintillation detectors (CPSD) in rare event search experiments.
Improving the cold quark-matter pressure via soft interactions at N3LO
Creators: name: Gorda, Tyler
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The propagation of long-wavelength gluons through a dense QCD medium at high baryon chemical potential mu_B is qualitatively modified by the effects of screening, arising from scatterings off the high-momentum quarks in the medium. This same screening phenomenon also impacts gluons occurring in loop corrections to the pressure of cold quark matter, leading to contributions from the parametric scale Sqrt(alpha_s)*mu_B, starting at next-to-next-to-leading order (N2LO) in the strong coupling constant alpha_s. At next-to-next-to-next-to-leading order (N3LO), interactions between these long-wavelength gluonic modes contribute to the pressure. These interaction corrections have recently been computed in arXiv:2103.07427 and arXiv:2103.05658, and the inclusion of these interactions slightly improves the convergence of the equation of state of cold quark matter. In these proceedings, we present these results and provide details summarizing how this lengthy calculation was performed.
description: 8 pages, 3 figures; contribution to the proceedings of A Virtual Tribute to Quark Confinement and the Hadron Spectrum (vConf21), 2-6 August 2021
Spectroscopic analysis of DA white dwarfs from the McCook & Sion catalog
Creators: name: Gianninas, A.
name: Bergeron, P.
name: Ruiz, M. T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: For some years now, we have been gathering optical spectra of DA white dwarfs in an effort to study and define the empirical ZZ Ceti instability strip. However, we have recently expanded this survey to include all the DA white dwarfs in the McCook & Sion catalog down to a limiting visual magnitude of V=17.5. We present here a spectroscopic analysis of over 1000 DA white dwarfs from this ongoing survey. We have several specific areas of interest most notably the hot DAO white dwarfs, the ZZ Ceti instability strip, and the DA+dM binary systems. Furthermore, we present a comparison of the ensemble properties of our sample with those of other large surveys of DA white dwarfs, paying particular attention to the distribution of mass as a function of effective temperature.
description: 8 pages, 7 figures, to appear in Journal of Physics Conference Proceedings for the 16th European White Dwarf Workshop
Diffusion of Electronic Government Technology: An Empirical Study of American Urban Places
Creators: name: Rydland, Kelsey
Publisher: name: University of Illinois at Chicago
Year: 2021
Subjects: Uncategorized

description: The rapid expansion and proliferation of technology are continually changing our daily personal and civic lives. The internet's role and the technology behind it are arguably one of the most critical policy innovations of the past century. The rapid, widespread, and sustained diffusion of Web 1.0 and Web 2.0 technologies have changed society forever. Digital era governance (DEG) and its use of technology are the driving force behind several decades of administrative reforms. DEG is central to how governments aspire to manage relationships with their citizens. This research examines the spread of DEG by offering a unique look at how technology has diffused in urban governments in the United States. The research uses a fixed-effects regression model and geospatial analysis to examine the determinants of DEG policy adoption. The dissertation examines three phases of DEG (Web 1.0, Web 2.0, open data portals, and 311 systems) across 231 cities. The model uses 693 variables and nearly six thousand text-mined and geographically linked data points over a 10-year time frame to inform our understanding of internal and external factors influencing DEG policy adoption. This research introduces a new way of understanding digital governance diffusion by testing electronic government technologies over time. The research offers a new means for collecting historical data regarding adopted technology. It is also comprehensive in scope, collecting thousands of data points for cities across the United States for over ten years. The research builds on diffusion theory applied to digital governance. The dissertation also tests diffusion theory in a large N-study and applies it to technology policy at the city level – a gap in the diffusion literature. The analysis finds a strong significance and reaffirmation that cities adopted more technologies over time. In addition to the hypothesis testing, the research finds that professional networks have slight significance as a predictor of digital governance adoption. When accounting for time, the fixed-effect analysis does not reveal any independent variables to have a strong significance on technology adoption over time. The dissertation concludes with a discussion of the policy implications of examining DEG policy diffusion, its limitations and then offers potential future research areas.
Constraints on emergent gravity
Creators: name: Jenkins, Alejandro
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this essay we review the central difficulty in formulating a viable quantum field theory in which gravity is emergent at low energies, rather than mediated by a fundamental gauge field. The Weinberg-Witten theorem forbids spin 2 massless modes from carrying Lorentz covariant stress-energy. In General Relativity the stress-energy is not covariant because it violates a gauge symmetry, but a gravitational theory without fundamental spin 2 gauge invariance must either lack a stress-energy operator or have a non-relativistic graviton. The latter option is incompatible with the principle of equivalence, though such theories are not necessarily ruled out at low energies.
description: 8 pages, 1 figure, preprint format. Submitted to the Gravity Research Foundation 2009 Awards for Essays on Gravitation. Awarded honorable mention, to appear in special issue of IJMPD. v2: references improved, minor points clarified
Heterogeneous Multi-core Architectures for High Performance Computing
Creators: name: Chiesi, Matteo <1984>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2014
Subjects: ING-INF/01 Elettronica

description: This thesis deals with heterogeneous architectures in standard workstations.  

Heterogeneous architectures represent an appealing alternative to traditional supercomputers because they are based on commodity components fabricated in large quantities. Hence their price-performance ratio is unparalleled in the world of high performance computing (HPC). 

In particular, different aspects related to the performance and consumption of heterogeneous architectures have been explored.
The thesis initially focuses on an efficient implementation of a parallel application, where the execution time is dominated by an high number of floating point instructions. Then the thesis touches the central problem of efficient management of power peaks in heterogeneous computing systems. Finally it discusses a memory-bounded problem, where the execution time is dominated by the memory latency.    

Specifically, the following main contributions have been carried out:

A novel framework for the design and analysis of solar field for Central Receiver Systems (CRS) has been developed. The implementation based on desktop workstation equipped with multiple Graphics Processing Units (GPUs) is motivated by the need to have an accurate and fast simulation environment for studying mirror imperfection and non-planar geometries.

Secondly, a power-aware scheduling algorithm on heterogeneous CPU-GPU architectures, based on an efficient distribution of the computing workload to the resources, has been realized. The scheduler manages the resources of several computing nodes with a view to reducing the peak power. The two main contributions of this work follow:

the approach reduces the supply cost due to high peak power whilst having negligible impact on the parallelism of computational nodes. 

from another point of view the developed model allows designer to increase the number of cores without increasing the capacity of the power supply unit. 
 
Finally, an implementation for efficient graph exploration on reconfigurable architectures is presented.
The purpose is to accelerate graph exploration, reducing the number of random memory accesses.
Light Fermionic Dark Matter and its Possible Detection in Neutrino Experiments
Creators: name: Kile, Jennifer
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We explore the potential for the direct detection of light fermionic dark matter in neutrino detectors. We consider the possible observation of the process $\bar{f} p \to e^+ n$, where $f$ is a dark matter fermion, in a model-independent manner. All operators of dimension six or lower which can contribute to this process are listed, and we place constraints on these operators from decays of $f$ which contain $γ$ rays or electrons. One operator is found which is sufficiently weakly constrained that it could give observable interactions in neutrino detectors. We find that Super-Kamiokande can probe the new physics scale for this operator up to $O(100{TeV})$.
description: 4 pages, contributed to the proceedings of SUSY '09, Boston, MA, June 2009