cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The implied volatility of index options: the evidence of options on the Australian SPI 200 index futures
Creators: name: Tanha, Hassan
Publisher: name: Monash University
Year: 2017
Subjects: Uncategorized

description: This thesis is a study of the implied volatility component of the Black and Scholes option-pricing model. A recurring finding in the thesis is that in-the-money and out-of ¬the-money options should not be regarded as being on a continuum, but rather as being inherently "different." Additionally, differences across these options are accounted for in relation to behavioural and consumption based models, which, in turn, provide an explanation for the volatility smile. These findings provide a recurring and underlying theme in the thesis. Specifically, the thesis combines seven studies that aim to provide a comprehensive study of the implied volatility of call options on the Australian ASX/SPI 200 index futures contracts (2001-2006). In the first study (chapter 3), I explore the shape of the implied volatility "smile" in terms of market micro-structure variables, market momentum and time to maturity. In the second study (chapter 4), I progress to examine the evolutionary dynamics of implied volatility. The predictive power of implied volatility in relation to the volatility of the underlying S&P/ASX 200 market index is examined in my third study (chapter 5). In my fourth and fifth studies (chapters 6 and 7), I relate implied volatility to macro-economic announcements (in relation to the state price density of the underlying asset in study 4, and in relation to the shape of the volatility smile in study 5). Study 6 (chapter 8) examines volatility asymmetry in the underlying S&P/ASX 200 market and the response of implied volatility. Finally, I examine the potential for artificial intelligent neural networks to improve on our ability to forecast the volatility smile pattern.
Szechuanosaurus zigongensis Gao 1993
Creators: name: Rauhut, Oliver W. M.
Publisher: name: Zenodo
Year: 2003
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Reptilia
Dinosauria
Szechuanosaurus
Szechuanosaurus zigongensis

description: ‘Szechuanosaurus' zigongensis Gao, 1993; metataxon Age. Bathonian-Callovian. Occurrence. Xiashaxiamo Formation, Sichuan, China. Diagnosis. Differs from Gasosaurus and Xuanhanosaurus in the more rectangular deltopectoral crest and the proximal part of the humerus being less expanded transversely; from Monolophosaurus and Eustreptospondylus in the gradually sloping anterior rim of the maxilla and the lack of opisthocoelous cervical vertebrae; from Piatnitzkysaurus in the gradually sloping anterior rim of the maxilla and the less expanded proximal humerus; from Iliosuchus in the lack of a vertical ridge on the ilium; from Poekilopleuron in the more strongly pronounced olecranon process of the ulna and the lack of a medial process on the radius; from Metriacanthosaurus in the less steeply sloping posterodorsal rim of the ilium; from Proceratosaurus in the more massive and relatively shorter posterior part of the maxilla. There are no elements preserved that overlap with Megalosaurus or Piveteausaurus. Remarks. ‘ Szechuanosaurus" zigongensis is one of five theropod taxa described from the Xiashaxiamo Formation of China. However, two of these taxa, Chuandongocoelurus primitivus and Kaijiangosaurus lini, are here regarded as nomina dubia, and there seem to be sufficient differences between ‘5.’ zigongensis and Gasosaurus and Xuanhanosaurus to regard the former species as a tentatively valid metataxon. It should be noted, however, that the discovery of more material might prove ‘S.9 zigongensis to be a junior synonym of Xuanhanosaurus qilixiaensis, since these two taxa are very similar in all comparable elements with the exception of the humerus. It is rather unclear why ‘ Szechuanosaurus" zigongensis has been referred to the considerably younger genus Szechuanosaurus. The type material of this genus is not diagnostic, and the material referred to the type species by Dong et al. (1983) differs significantly from the type skeleton of ‘5.’ zigongensis. Thus, the latter species should be removed from Szechuanosaurus.
description: Published as part of Rauhut, Oliver W. M., 2003, The interrelationships and evolution of basal theropod dinosaurs, pp. 1-213 in Special papers in palaeontology 69 on pages 21-22, DOI: 10.5281/zenodo.3382576
description: {"references": ["------ 1993. A new species of Szechuanosaurus from the Middle Jurassic of Dashanpu, Zigong, Sichuan. Vertebrata PalAsiatica, 31, 308 - 314. [In Chinese].", "------ ZHOU, s. and zhang, y. 1983. The dinosaurian remains from Sichuan Basin, China. Palaeontologia Sinica, 162, 1 - 145. [In Chinese]."]}
EVALUATION OF RELIABILITY’ INDICES AND CHARACTERISTICS OF THE POWER SYSTEM' EQUIPMENT AND DEVICES BY NON TRADITIONAL METHOD
Creators: name: Farzaliyev, Y.Z.
name: Farhadzadeh, E.M.
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: representativeness
reliability indices
varieties of signs
statistical distribution function
simulation modeling
fiducially intervals
testing statistical hypothesis
type I and II errors
sample
population
multidimensionality

description: In the paper considered the research expediency classification of statistical data according to the given varieties of signs. The researching carried out based on modeling of small and multidimensional samples to statistical distribution functions. A discrepancy found in the estimation of the mathematical expectation of the average values of sample implementation, to overcome this inconsistency, a new method for modeling samples of random variables is proposed. It established that the classification in the literature data carried out according to the varieties of signs accepted in the classifiers without control of expediency. The causes of errors arising in the evaluation of Kolmogorov statistics as the largest in absolute deviation are analyzed the deviation between statistical distribution functions of the population and sample using simulation modeling, fiducially intervals and the theory of testing statistical hypotheses. These erroneous calculations with a small number and multidimensionality of sampling implementations double increases of the Type II Error. Finally, the result showed the advantages of the new method in comparison with Kolmogorov’ criterion via checking representativeness of sample.
Future evolution in a backreaction model and the analogous scalar field cosmology
Creators: name: Ali, Amna
name: Majumdar, A. S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate the future evolution of the universe using the Buchert framework for averaged backreaction in the context of a two-domain partition of the universe. We show that this approach allows for the possibility of the global acceleration vanishing at a finite future time, provided that none of the subdomains accelerate individually. The model at large scales is analogously described in terms of a homogeneous scalar field emerging with a potential that is fixed and free from phenomenological parametrization. The dynamics of this scalar field is explored in the analogous FLRW cosmology. We use observational data from Type Ia Supernovae, Baryon Acoustic Oscillations, and Cosmic Microwave Background to constrain the parameters of the model for a viable cosmology, providing the corresponding likelihood contours.
description: 12 pages, 8 figures
EXPONENTIAL POISSON DISTRIBUTION IN RELIABILITY ACCEPTANCE SAMPLING PLAN FOR LIFE TESTING
Creators: name: V.Kaviyarasu
name: A.Nagarajan
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: Exponential – Poisson (EP) Distribution
Reliability
Median lifetime
Single Sampling Plan

description: Statistical Quality Control is an important field in production and maintenance of quality product in manufacturing environments. Reliability sampling plans (RSP) were widely employed in the sectors of manufacturing to monitor the quality of products in order to safe guard the producer as well as the consumer also the experimental costs and time can be saved. This article is developed on the reliability sampling plan when the evaluating life of the product is set to be truncated at predetermined time follows Exponential-Poisson (EP) distribution. The probability of acceptance criteria for the single sampling is designed to achieve the lowest sample size for such proposed two parameter probability distribution with the corresponding decision rule. This study is conducted to design plan parameters on the basis of desired quality levels such as Acceptable Reliability Quality Level (ARQL), Indifference Reliability Quality Level (IRQL) and Rejectable Reliability Quality Level (RRQL). This study computes the median life for the specified producer's risk, its OC curve is provided along with the minimum ratio values. Furthermore, it determines the minimum size of the samples and the acceptance number. Table values have been obtained and provided for single sampling plan. Additionally, suitable examples are provided to conduct a study on a real time situations.
Observation of Color-Transparency in Diffractive Dissociation of Pions
Creators: name: Aitala, E. M.
name: Amato, S.
name: Anjos, J. C.
name: Appel, J. A.
name: Ashery, D.
Publisher: name: The American Physical Society
Year: 2001
Subjects: subject: 530

description: Physical Review Letters
FAILURE RATE ESTIMATION BY WEIBULL DISTRIBUTION IN A STOCHASTIC ENVIRONMENT: APPLICATION TO THE HEMODIALYSIS MACHINE
Creators: name: Sofiene Fenina
name: Souheyl Jendoubi
name: Faker Bouchoucha
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: Failure rate
Uncertain Factor
Gaussian perturbation
Weibull distribution

description: This paper presented a study of the failure rate by introducing the effect of influencing variables. These variables have a random effect which depends on the external environment of the system. There are a multitude of variables and their modeling is difficult. The perturbation, to the failure rate, caused by external factors, has a direct impact on the time scale by the acceleration (or deceleration) of the degradation of the system. Therefore, the adopted methodology consists in introducing a perturbation on the Weibull parameters and studying its effect on the failure rate. Weibull parameters are considered random variables with a Gaussian distribution. The failure rate formulation in a random environment is offered through Weibull distribution. A case study of the hemodialysis machine is offered to illustrate the proposed approach and validate the results. The simulations presented show the failure rate statistics for different configurations of the Weibull distribution. The validation of the results was done using Monte Carlo simulations.
title: WikiRemembrance - Erinnerungskultur digital und partizipativ: Eine Handreichung
Creators: name: (:Unkn) Unknown
Publisher: name: Hannover : Technische Informationsbibliothek
Year: 2024
Subjects: subject: Digitale Erinnerungskultur
subject: Offene Daten
subject: Handreichung
subject: 020
subject: 900

description: Wie können wir erinnern, woher wir kommen und wer wir als demokratische Gesellschaft heute sind, ohne uns dabei aus Furcht vor Nationalismus und Hass dem digitalen Wandel der Wissenskultur zu verschließen? Diese Handreichung versteht sich als Diskussionsbeitrag und Ratgeber für eine reflektierte digitale Praxis in der Erinnerungskultur. Sie beschreibt aktuelle erinnerungskulturelle Herausforderungen und gibt Anregungen, wie diesen mit Hilfe von Werkzeugen und Praktiken begegnet werden kann, die sich bei Wikidata, Wikipedia und ähnlichen Plattformen bewährt haben. Vor allem erscheint eine intelligente Verknüpfung von digitalen und analogen Methoden gewinnbringend. Durch ihre erweiterte Reichweite, flexiblere Teilnahmemöglichkeiten, durch ihre Anpassungsfähigkeit und Skalierbarkeit sind digitale Formate eine wertvolle Ergänzung analoger Angebote, ohne diese jedoch zu ersetzen. Diese Handreichung ist in einem partizipativen Prozess entstanden. Initiative und Rahmen dieses Prozesses war das Projekt WikiRemembrance an der TIB - Leibniz Informationszentrum Technik und Naturwissenschaften, das vom “Zukunftsdiskurse”-Programm des niedersächsischen Ministeriums für Wissenschaft und Kultur 2023 bis 2024 gefördert wurde.
Ultra-Spinning Gauged Supergravity Black Holes and their Kerr/CFT Correspondence
Creators: name: Noorbakhsh, S. M.
name: Ghominejad, M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recently a new class of asymptotically AdS ultra-spinning black holes has been constructed with a noncompact horizon of finite area [1], in which the asymptotic rotation is effectively boosted to the speed of light. We employ this technique for four-dimensional $U(1)^4$ and five-dimensional $U(1)^3$ gauged supergravity black holes. The obtained new exact black hole solutions for both cases possess a noncompact horizon; their topologies are a sphere with two punctures. We then demonstrate that the ultra-spinning limit commutes with the extremality condition as well as the near horizon limit for both black holes. We also show that the near horizon extremal geometries of the resulting ultra-spinning gauged supergravity black holes lead to the well-known result which contains an AdS$_2$ throat. We then obtain the $[(d-1)/2]$ central charges of the dual CFTs. By assuming the Cardy formula, we show that despite the noncompactness of the horizon, microscopic entropy of the dual CFT is precisely equivalent to the Bekenstein-Hawking entropy.
description: 25 pages, 7 figures; v2: matched the published version
HALF CAUCHY EXPONENTIAL DISTRIBUTION: ESTIMATION AND APPLICATIONS
Creators: name: K. Jayakumar
name: Fasna. K
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: Half-Cauchy distribution
Method of least-squares
Method of Cramer-von-Mises
Maximum likelihood estimation
T-X family

description: In this paper, we introduce a new two-parameter distribution called the new Half Cauchy exponential distribution (HCE) for modeling lifetime data. The structural properties of the new distribution are discussed. Expressions for the quantiles, mode, mean deviation, and distribution of order statistics are derived. The model parameters of HCE distribution are estimated by the method of maximum likelihood, method of least square, method of Cramer-von-Mises, and Anderson-Darling methods. The existence and uniqueness of maximum likelihood estimates are proved. The importance of the new distribution is proved empirically by real-life data set.
gasAcu1-4.ensembl94GenesWithNameLiftedFromGasAcu1.ixx
Creators: name: Chen, Heidi
Publisher: name: figshare
Year: 2023
Subjects: Genomics

description: A file for the gasAcu1-4 Threespine Stickleback genome assembly hub Related publications: Roberts Kingman, Garrett A., Deven N. Vyas, Felicity C. Jones, Shannon D. Brady, Heidi I. Chen, Kerry Reid, Mark Milhaven, et al. “Predicting Future from Past: The Genomic Basis of Recurrent and Rapid Stickleback Evolution.” Science Advances 7, no. 25 (June 18, 2021): eabg5285. https://doi.org/10.1126/sciadv.abg5285. Roberts Kingman, Garrett, Heidi Chen, David Kingsley, Deven Vyas, Krishna Veeramah, Felicity Jones, and Mike Bell. “Resources for GasAcu1-4, a New Stickleback Reference Genome.” Dryad, 2020. https://doi.org/10.5061/DRYAD.547D7WM6T.
(200576) Walter Percy Norton
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
title: Engineering new approaches for pathogen separation and detection to tackle antimicrobial resistance
Creators: name: Farthing, Andrew G.
Publisher: name: University of Glasgow
Year: 2024

description: Sepsis and antimicrobial resistance are global health crises. Sepsis, defined as a lifethreatening, dysregulated host response to infection, is responsible for one fifth (11 million) of all global deaths. The importance of immediate antimicrobial therapy in sepsis management is well documented, with 80% of patients surviving if they receive adequate antimicrobial therapy within one hour of documented hypotension. For each hour of subsequent delay for the following 6 hours there is an associated decrease in survival of 7.6%; at this rate, the chance of surviving more than 30 hours is less than 10%. This reliance on rapid, broad spectrum antimicrobial therapy necessary to treat sepsis accelerates the spread of resistance which is predicted to result in one death every 3 seconds due to a drug-resistant infection by 2050, resulting in 10 million more global deaths each year. Rapid and accurate pathogen identification remains a significant challenge in sepsis management due to the low concentration of pathogens in the bloodstream (1-1000 colony forming units/ml). This necessitates a lengthy blood culture step which typically takes 1-5 days. This thesis addresses the diagnostic bottleneck in sepsis treatment by exploring innovative methods for pathogen detection and separation. Focusing on the Glasgow Royal Infirmary’s clinical diagnostics workflow, I aimed to develop a novel sample preparation assay for blood samples by leveraging Toll-like Receptors 2, 4 and 9. These receptors, known for their broad pathogen recognition capabilities, were investigated for their potential to bind and detect Gram-positive bacteria, Gram-negative bacteria, and microbial DNA directly from blood samples. By exploiting the advantages of imaging flow cytometry for high-throughput detection of small particles, I developed and optimised assays to accurately quantify the binding capacity of TLRs to whole bacteria, and pathogen DNA. This work highlights the diagnostic and therapeutic potential of Toll-like receptors to be used, not only for pathogen detection, but also as possible biomarkers for the sepsis immune response, offering a novel, double-edged approach to diagnostics. Further optimisation may one day reduce the need for lengthy blood cultures, facilitating antimicrobial stewardship and helping pave the way for more effective sepsis management.
gasAcu1-4.gasAcu1.all.bigChain.link.bb
Creators: name: Chen, Heidi
Publisher: name: figshare
Year: 2023
Subjects: Genomics

description: A file for the gasAcu1-4 Threespine Stickleback genome assembly hub Related publications: Roberts Kingman, Garrett A., Deven N. Vyas, Felicity C. Jones, Shannon D. Brady, Heidi I. Chen, Kerry Reid, Mark Milhaven, et al. “Predicting Future from Past: The Genomic Basis of Recurrent and Rapid Stickleback Evolution.” Science Advances 7, no. 25 (June 18, 2021): eabg5285. https://doi.org/10.1126/sciadv.abg5285. Roberts Kingman, Garrett, Heidi Chen, David Kingsley, Deven Vyas, Krishna Veeramah, Felicity Jones, and Mike Bell. “Resources for GasAcu1-4, a New Stickleback Reference Genome.” Dryad, 2020. https://doi.org/10.5061/DRYAD.547D7WM6T.
Long-run economic growth in OECD countries: a century of evidence
Creators: name: Timol, Isfaaq
Publisher: name: Monash University
Year: 2017
Subjects: Uncategorized

description: This thesis examines three important issues in growth economics. These issues are productivity catch-up in the manufacturing sector, the direction of causality between schooling and economic growth, and the role of fiscal policy in explaining long-run growth. The main contribution of this thesis is to provide new empirical evidence on productivity growth in OECD countries using an extensive dataset going back to 1870, with important implications for growth researchers and policy makers around the world. Each chapter also makes significant contributions to the literature. The first contribution is to provide conclusive evidence of both β-convergence and σ- convergence in the manufacturing sector. The results in Chapter 2 suggest that the convergence has been driven by domestic research intensity, technology spillovers through the channel of imports, distance to the technology frontier, and catching up to the technology frontier through the channel of financial development. The empirical estimates are consistent with the predictions of Schumpeterian growth theory since domestic research intensity and foreign research intensity spillovers are found to have permanent growth effects. A clear policy implication is that innovation and R&D are essential for manufacturing productivity advances and governments must therefore ensure that appropriate legislations and institutions are in place to encourage innovation. The second contribution is to provide new empirical evidence showing that reverse causality does not appear to exist between schooling and growth. The results presented in Chapter 3 suggest that schooling is not affected by expected growth and most other variables linked to the present value of schooling. Furthermore, even if feedback effects from growth to schooling are allowed for in the growth regressions, the growth effects of schooling are not reduced. The most important implication of this result is that human capital driven growth models are still valid – schooling is indeed one the main drivers of long-run growth. The third contribution is to provide significant evidence that an increase in personal income taxation hinders the growth rate, while the long-run growth effects of corporate income taxation are found to be insignificant. Furthermore, consumption taxation is found to be positively correlated with the economic growth, suggesting that a reduction in income taxation financed by a higher consumption tax can be growth enhancing. Taken as a whole, this thesis suggests that technological progress, financial development and schooling have been among the strongest predictors of economic growth in OECD countries over the last century. Identifying these important growth determinants can help governments design sound economic policies to ensure sustained growth in the future.
Building blocks of polarized endomorphisms of normal projective varieties
Creators: name: Meng, Sheng
name: Zhang, De-Qi
Publisher: name: arXiv
Year: 2016
Subjects: subject: Algebraic Geometry (math.AG)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 14E30, 32H50, 08A35

description: An endomorphism $f$ of a projective variety X is polarized (resp. quasi-polarized) if $f^*H$ is linearly equivalent to $qH$ for some ample (resp. nef and big) Cartier divisor $H$ and integer $q > 1$. First, we use cone analysis to show that a quasi-polarized endomorphism is always polarized, and the polarized property descends via any equivariant dominant rational map. Next, we show that a suitable maximal rationally connected fibration (MRC) can be made $f$-equivariant using a construction of N. Nakayama, that $f$ descends to a polarized endomorphism of the base Y of this MRC and that this Y is a Q-abelian variety (quasi-étale quotient of an abelian variety). Finally, we show that we can run the minimal model program (MMP) $f$-equivariantly for mildly singular X and reach either a Q-abelian variety or a Fano variety of Picard number one. As a consequence, the building blocks of polarized endomorphisms are those of Q-abelian varieties and those of Fano varieties of Picard number one. Along the way, we show that $f$ always descends to a polarized endomorphism of the Albanese variety Alb(X) of X, and that the pullback of a power of $f$ acts as a scalar multiplication on the Neron-Severi group of X (modulo torsion) when X is smooth and rationally connected. Partial answers about X being of Calabi-Yau type, or Fano type are also given with an extra primitivity assumption on $f$ which seems necessary by an example.
description: Advances in Mathematics (to appear)
Obesity in Australia: an economic perspective
Creators: name: Au, Nicole
Publisher: name: Monash University
Year: 2017
Subjects: Uncategorized

description: Obesity is a large and growing problem in Australia and many countries. The health and economic consequences associated with obesity can lead to increased costs and reduced welfare for society as a whole, and also tend to disproportionately affect those who are already socioeconomically disadvantaged. Research into the underlying economic determinants and consequences of obesity is important for developing evidence-based policy to address these issues. This thesis investigates some of the determinants and consequences of obesity in Australia from an economic perspective. Firstly, it examines the influence of an individual’s value of time (measured by labour force participation, employment hours and wage rates) on their probability of weight gain and obesity. Secondly, it investigates the health care cost implications of childhood overweight and obesity. The existing literature has paid little attention to the role of the value of time in determining obesity, particularly for women, and very few studies have examined this relationship using Australian data. This thesis contributes to the literature by using Australian panel data and appropriate econometric techniques to examine more closely the influence of labour force participation and work hours on weight gain among young and middle-aged women. It also determines the impact of having a higher value of time on BMI and obesity, separately by gender and by socioeconomic subgroup. The findings indicate that there may be value in preventive efforts that focus on reducing the time costs of maintaining a healthy body weight. The literature on childhood obesity is growing, yet little is known about the health care costs associated with obesity that are incurred during childhood. This thesis uses individual level data that is linked to Australian Medicare records to provide significant new information on the impact of being overweight at age 4 to 5 on publicly-funded health care costs during childhood. It also explores the dynamics behind childhood overweight, including duration and timing of becoming overweight, in relation to health care costs. The findings suggest that early prevention of childhood obesity in children as young as 4 or 5 years may have significant economic implications. In summary, this thesis makes an important contribution to the understanding of the economic determinants and consequences of obesity in some key population groups, including children and young women of Australia.
LSA: A LIGHTWEIGHT SYMMETRIC ENCRYPTION ALGORITHM FOR RESOURCE-CONSTRAINED IOT SYSTEMS
Creators: name: Shah, Amita
name: Shah, Sanjay
name: Hiren Patel
name: Namit Shah
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: IoT
Data security
Cryptography
Lightweight Algorithms
Security Encryption

description: Today, Internet of Things (IoT) systems are being employed in a wide variety of domains, such as education, healthcare, industrial equipment automation, etc. With gigabytes of data being generated and processed by even the average IoT system, securing this generated data is crucial task. It requires a low-cost, high-performance encryption system for constrained IoT systems. The Advanced Encryption Standard (AES) is widely used for many cryptographic domains because of its strong security characteristics. AES is designed for general-purpose symmetric encryption algorithm but there is a need for a lighter algorithm that is specifically tuned for the needs of IoT devices with limited computation capabilities. Aim: This paper is proposing Lightweight Symmetric Algorithm (LSA) as a faster and lighter alternative to the standard AES-128 for IoT applications. The primary objective of its design was to minimize the time and memory usage required for encryption and decryption processes while retaining the strong security characteristics. Method: The research also demonstrates the comparative analysis of LSA and AES based on efficiency and resource usage. It also proves the difficulty of performing a successful brute force attack, confusion and diffusion properties, and avalanche criterion satisfiability are identical for AES and LSA algorithms. Findings: The comparison analysis of LSA and AES suggests a 14.68% lower memory usage for encryption and decryption as well as more than a 50% decrease, on average, in the required time for encryption or decryption of differently-sized files consisting of the same 128 bit data blocks. The comparisons and empirical observations show that AES and LSA are both almost identical in terms of their security characteristics such as the difficulty of performing a successful brute force attack, confusion and diffusion properties, and avalanche criterion satisfiability. Conclusion: The proposed LSA algorithm is compared with various available lightweight cipher technologies with respect to time, memory, and security properties suggests the suitability of LSA for resource constrained IoT devices with strong security requirements.
Mathieu Moonshine and Symmetry Surfing
Creators: name: Gaberdiel, Matthias R.
name: Keller, Christoph A.
name: Paul, Hynek
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Number Theory (math.NT)
subject: Representation Theory (math.RT)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Mathieu Moonshine, the observation that the Fourier coefficients of the elliptic genus on K3 can be interpreted as dimensions of representations of the Mathieu group M24, has been proven abstractly, but a conceptual understanding in terms of a representation of the Mathieu group on the BPS states, is missing. Some time ago, Taormina and Wendland showed that such an action can be naturally defined on the lowest non-trivial BPS states, using the idea of `symmetry surfing', i.e., by combining the symmetries of different K3 sigma models. In this paper we find non-trivial evidence that this construction can be generalized to all BPS states.
description: 32 pages. V2: added more detailed argument on which states get lifted under symmetry surfing
Die  Sorgfältige Haus-Mutter, Bestehend in einem Haus-Calender auf das Jahr 1763 : Worinnen die so schädlichen Mägdverschafferen, und in Grund verderbten Mägde, deutlich abgeschildert; auch viele nützliche Haus- und Bauren-Regeln, nebst vielen dienlichen Haus-Mitteln beschrieben sind
Creators: name: [s.n.]
Publisher: name: bey Joh. Rudolf Jm-Hof
Year: 1763

description: Von einem Liebhaber der Astronomischen- und andern Wissenschaften
MATHEMATICAL MODELING OF AVERAGE WEIGHTED RENYI’S ENTROPY MEASURE
Creators: name: , Savita
name: Kumar, Rajeev
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: Shannon entropy
Renyi entropy
Weighted entropy
Symmetry
Concavity

description: A weighted entropy measure of information is provided by a probabilistic experiment whose basic events are described by their objective probabilities and some qualitative (objective or subjective) weights. Weighted entropy has also been applied to equity the amount of information and degree of homogeneity related with a partition of data in classes. These measures have tremendous applications and are found to be quite helpful in many fields. In the present paper, a new weighted Renyi’s entropy measure is proposed for the discrete distributions when probabilities are unknown and weights are known. The various characteristics of the measure are investigated. The measure is also studied taking into a particular case. In the last, numerical computation and graphical analysis is also done. Based on the graphical analysis, it is concluded that the proposed measure varies with values of weights and is concave in nature. The developed weighted information measure is useful for the discrete distribution when probabilities are unknown and weights are known.
An Architecture For A System of Mobile Agents
Creators: name: Doberkat, Ernst-Erich
Publisher: name: Universität Dortmund
Year: 2002
Subjects: subject: 004

description: The system of mobile agents described here is like a beehive: agents (like bees) swarm off to do their duties, wandering to different places, and finally returning to their origin. The main insight of this work is how to specifically separate the different functionalities in such a system of mobile agents, and in particular a description of the cooperative processes is given. In fact, modeling the cooperation of agents is at the heart of this proposal. This paper proposes the specification of a mobile system in an object oriented specification language, thus permitting to model a system without binding it to a particular language, an implementation platform or a programming model. The specification is an architectural description of the system, focusing on its components, their functionalities and connectors. It helps making assumptions and hence properties of the system explicit, it will be used as a blueprint for the implementation of a framework which supports mobile agents.
description: Internes Memorandum des Lehrstuhls für Software-Technologie / Fachbereich Informatik, Universität Dortmund ; 111
MPEC 2023-O16 : 2018 BG5
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
(200578) Cecil Somers Clarke
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
MOVING AVERAGE AND DOUBLE MOVING AVERAGE CONTROL CHARTS FOR PROCESS VARIABILITY USING AUXILIARY INFORMATION
Creators: name: Ghute, Vikas
name: Pawar, Sarika
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: Control chart
average run length
auxiliary information
moving average
double moving average

description: The memory type control charts based on auxiliary information have been introduced in the literature for improved monitoring of the process parameters for normally distributed process. In this paper, we design moving average and double moving average control charts based on auxiliary information for efficient monitoring the shifts in the process variability. Regression estimator of process variance in the form of auxiliary and study variables is considered to construct charting statistics for the proposed charts. The average run length (ARL) and standard deviation of run length (SDRL) performance of the proposed charts is investigated using simulation study and is compared with the originally proposed Shewhart control charts based on auxiliary information and without auxiliary information. The proposed auxiliary information based moving average and double moving average charts are found to be efficient for monitoring the process variance of normally distributed process. An illustrative example based on simulated data set is provided to show the implementation of the proposed charts in detecting shifts in the process standard deviation.
Gauge see-saw: A mechanism for a light gauge boson
Creators: name: Lee, Hye-Sung
name: Seo, Min-Seok
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: There has been rapidly growing interest in the past decade in a new gauge boson which is considerably lighter than the standard model Z boson. A well-known example of this kind is the so-called dark photon, and it is actively searched for in various experiments nowadays. It would be puzzling to have a new gauge boson which is neither massless nor electroweak scale, but possesses a rather small yet nonzero mass. We present a mechanism that can provide a light gauge boson as a result of a mass matrix diagonalization.
description: Version to appear in PLB
Analysis of the influence of the daily regulation of power stations on navigable flow conditions at river confluences using the LSTM model
Creators: name: Xue, Hongcheng
name: Cui, Shihao
name: Ma, Qian
name: Li, Zhongyong
name: Zhou, Pengyu
name: Li, Yuanyuan
name: Xie, Lingyun
Publisher: name: Taylor & Francis
Year: 2024
Subjects: Medicine
Environmental Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Information Systems not elsewhere classified
Cancer

description: The daily operations of large hydropower stations on rivers induce frequent variations in downstream water levels and flow velocities, resulting in unsteady and complex hydraulic characteristics at the confluence of the main stream and its tributaries, which adversely affect navigation safety. The continuity and momentum equations, along with the RNG k-ϵ turbulence model and the VOF model, were employed to simulate the river flow process at the confluence under unsteady flow conditions. The simulated results for water levels and velocity vector fields are in good agreement with experimental data. Variations in hydraulic characteristics, including water level, flow velocity, and longitudinal gradient at the confluence of the main stream and its tributaries, were analysed. The results indicated that the water level at the confluence decreases when the tributary merges with the main stream. As the confluence ratio increases, fluctuations in the water level at the confluence decrease. However, an increase in the staggered period results in greater fluctuations in the water level within this region. Moreover, a crescent-shaped high-speed flow region is formed at the confluence of the tributary and the main stream. As the unsteady flow discharge of the main stream increases, the relative area of this region correspondingly enlarges, reaching its maximum at peak discharge, and subsequently gradually diminishes as the discharge decreases. Based on these simulation data, a Long Short-Term Memory (LSTM) model was developed to effectively predict water levels and flow velocities, providing a more convenient and accurate method for obtaining real-time information on confluence areas than traditional mathematical and statistical approaches. This study provides novel insights into predicting flow characteristics in confluence areas, thereby offering a basis for formulating navigation safety plans.
Pressure heterogeneity in small displacement electrohydraulic forming processes
Creators: name: Daehn, G. S.
name: Fenton, G.
name: Vohnout, V. J.
Publisher: name: Institut für Umformtechnik - Technische Universität Dortmund
Year: 2010
Subjects: subject: electro-hydraulic
subject: forming
subject: pressure
subject: 620
subject: 670

description: Electrohydraulic (submerged arc discharge) forming of sheet metal parts has been used as a specialized high speed forming method since the 1960 s. The parts formed generally had a major dimension in the 5 to 25 cm range and required gross metal expansion in the centimeter range. In the descriptions of this process found in the literature, the pressure front emanating from the initial plasma generated by the arc is considered to be uniformly spherical in nature. At least one commercial system used this model to design hardware for pressure front focusing to optimize the forming process[1] and it has been the subject of continued research [2]. Recently, there has been commercial interest in adopting the electro-hydraulic method for the production of much smaller parts requiring very high die contact pressures but little gross sheet expansion. The forming of these small shallow parts required only a few kilojoules but proved to be problematic in other terms. The process development clearly showed indications of random patterns of large pressure heterogeneity across distances in the millimeter range. The apparent pressure heterogeneity produced unacceptable small scale variation in the part geometry. A test program was designed to verify and quantify this effect using a target (die) consisting of a flat plate having small closely spaced holes. This 50 mm diameter target proved very effective in clearly showing the extent of the heterogeneity as well as the approximate local pressures. Various discharge energies were investigated along with different chamber shapes and pressure transfer mediums. The pressure heterogeneity across the target face was a common feature to all experiments. These test results indicate that a uniform pressure front model can be seriously in error for the electrohydraulic process as implemented to date. The results of a qualitative hydro-code model of the test system including the discharge event are presented. The model results are similar enough to the experimental to imply that the coaxial electrode s inherent off center discharge is a primary suspect among potential explanations for the observed heterogeneity in terms of asymmetric shock interaction. The absence of this phenomena in the earlier electrohydraulic forming literature is also discussed.
Interpreting the outcomes of two-part models
Creators: name: Frondel, Manuel
name: Vance, Colin
Publisher: name: Technische Universität Dortmund
Year: 2011
Subjects: subject: censored regression models
subject: interaction terms
subject: marginal and interaction effects
subject: 310
subject: 330
subject: 620

description: Interaction effects capture the impact of one explanatory variable x1 on the marginal effect of another explanatory variable x2. To explore interaction effects, so called interaction terms x1x2 are typically included in estimation specifications. While in linear models the effect of a marginal change in the interaction term is equal to the interaction effect, this equality generally does not hold in non-linear specifications (AI, NORTON, 2003). This paper provides for a general derivation of marginal and interaction effects in both linear and non-linear models and calculates the formulae of the marginal and interaction effects resulting from the Two-Part Model, a commonly employed censored regression model. Drawing on a survey of automobile use from Germany, we illustrate several subtleties inherent to the substantive interpretation of interaction effects gleaned from non-linear models.
description: Discussion Paper / SFB 823;11/2011
MOVING BLOCK BOOTSTRAP METHOD WITH BETTER ELEMENTS REPRESENTATION FOR UNIVARIATE TIME SERIES DATA
Creators: name: Kayode Ayinde
name: Daniel, James
name: Akinola Adepetun
name: Olusegun S. Ewemooje
Publisher: name: Reliability: Theory & Applications
Year: 2023
Subjects: Bootstrap method
Autoregressive Moving Average (ARMA)
measures of accuracy
Moving block bootstrap (MBB)
Moving Block Bootstrap Method with better element Representation

description: Bootstrap method was initially used to determine accuracy measures for sample estimates of independent and identical distributions (i.i.d.). In order to apply bootstrap method to time-dependent data, blocking technique is introduced to preserve serial correlation of the original time series data. In the past, resampling techniques for time-dependent data were implemented using Non-overlapping Block Bootstrap (NBB) method but its dichotomous block arrangement restricts the number of blocks. As a result, improvement becomes necessary. Although the Moving Block Bootstrap (MBB) method improves upon NBB with regard to many more blocks, it introduces an uneven representation of the time series elements which eventually influences its accuracy. In this paper, an innovative method called Moving Block Bootstrap Method with better element Representation (MBBR) is developed to ensure that the time series elements within the block are better represented with minimum number of elements. To compare MBB and MBBR, simulated studies were carried out on some set time series data following each classes of Autoregressive Moving Average (ARMA) model with different parameters, sample sizes and standard deviation using Root Mean Squared Error (RMSE) and Mean Absolute Error (MAE). Results show that by improving the representation of time series data in the blocking arrangement, the accuracy of the proposed method (MBBR) consistently outperforms the existing one (MBB) and thus, provides more efficient estimates of the dependent variable.
Board structure, incentives, risk taking and performance in US insurers
Creators: name: Podder, Jyotirmoy
Publisher: name: Monash University
Year: 2017
Subjects: Uncategorized

description: This thesis examines board structure and incentives in relation to risk taking and performance in listed US insurers over 2003-2010. Using a sample of listed US insurers, this thesis shows that board independence, gender diversity, busy boards, board compensation, and CEO compensation are positively related to the risk taking and performance while no strong relation is found for experienced boards and insurer risk taking or performance. The results are robust to a number of risk and performance proxies. The several estimation methods are applied to address the endogeneity, unobserved heterogeneity, cross-sectional correlation, and outlier problems. Overall, this thesis contributes to both the general corporate governance and insurance literature. The gender diversity, experienced boards and incentives findings are new in any context. The board independence and busy boards results are also new in the insurance context, and different from prior non-financial and banking governance literature. These findings should prove to be of interest to a number of stakeholders. Academics should consider the inter-linkages among board structures and incentives when designing future research on insurance governance and compensation. Investors may benefit from buying shares in insurers with more independent and diverse boards that are compensated more with stocks and options rather than with just cash. Finally, these results suggest that regulators should preclude directors from becoming too entrenched with excessive stock based compensation.