cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Galois representations on the cohomology of hyper-Kähler varieties
Creators: name: Floccari, Salvatore
Publisher: name: Berlin, Heidelberg : Springer
Year: 2022
Subjects: subject: Galois representations
subject: Hodge theory
subject: Hyper-Kähler varieties
subject: Motives
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: We show that the André motive of a hyper-Kähler variety X over a field K⊂ C with b2(X) > 6 is governed by its component in degree 2. More precisely, we prove that if X1 and X2 are deformation equivalent hyper-Kähler varieties with b2(Xi) > 6 and if there exists a Hodge isometry f: H2(X1, Q) → H2(X2, Q) , then the André motives of X1 and X2 are isomorphic after a finite extension of K, up to an additional technical assumption in presence of non-trivial odd cohomology. As a consequence, the Galois representations on the étale cohomology of X1 and X2 are isomorphic as well. We prove a similar result for varieties over a finite field which can be lifted to hyper-Kähler varieties for which the Mumford–Tate conjecture is true.
EFFECT OF VARIOUS PARAMETERS ON THE PERFORMANCE OF HELICAL COIL HEAT EXCHANGERA NUMERICAL INVESTIGATION
Creators: name: Makarand Patil
name: Balwant Bhasme
Publisher: name: Reliability: Theory & Applications
Year: 2021
Subjects: Curvature Ratio (d/D)
Helical coil heat exchanger
Secondary Flow
Nusselt Number
Prandtl Number

description: A Heat exchanger is a device that is used to transfer heat from one fluid to another fluid through direct or indirect contact. In this paper, the double pipe helical coil heat exchanger is studied numerically under four conditions at outer wall of heat exchanger which are: constant heat flux, constant wall temperature, insulated, and having heat transfer coefficient of 4000 W/m2K for square and circular shape of tubes. The inner diameter of the inner tube is kept 8mm with the thickness of the inner tube is 0.5 mm. The outer tube inner diameter is 17mm.The inverse of the curvature ratio for this study as 10, 15, 20 and 25 with a number of turns 2. The curvature diameter is varied. The velocity of hot fluid flowing inside the inner tube is varied while, the mass flow rate of cold fluid flowing through the outer tube is kept constant as 0.512105Kg/sec. The primary motives for this work are to find out the optimum curvature ratio and Reynolds number to get the maximum heat transfer rate with minimum pumping power, which increases because of increase in number of turns for a coil. This, work incorporates computational analyses and their validation. In the present work, the objective is to find out the effect of providing various outer boundary conditions on thermal properties of flowing fluid, curvature ratio and Reynolds Number. From the present work it is noticed that Nusselt Number varies directly with the pitch of the helical coil for the constant height of the helical tube. The Optimum value of Reynold's number is increasing with an increase in curvature ratio for constant heat flux condition of the outer tube for both cross-sections
Non-equilibrium spin noise spectroscopy of a single quantum dot operating at fiber telecommunication wavelengths
Creators: name: Sun, Tian-Jiao
name: Sterin, P.
name: Lengert, L.
name: Nawrath, C.
name: Jetter, M.
name: Michler, P.
name: Ji, Yang
name: Hübner, J.
name: Oestreich, M.
Publisher: name: Melville, NY : American Inst. of Physics
Year: 2022
Subjects: subject: Augers
subject: Electrospinning
subject: III-V semiconductors
subject: Indium arsenide
subject: Magnetic moments
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We report on the spin and occupation noise of a single, positively charged (InGa)As quantum dot emitting photons in the telecommunication C-band. The spin noise spectroscopy measurements are carried out at a temperature of 4.2 K in dependence on intensity and detuning in the regime beyond thermal equilibrium. The spin noise spectra yield in combination with an elaborate theoretical model the hole-spin relaxation time of the positively charged quantum dot and the Auger recombination and the electron-spin relaxation time of the trion state. The extracted Auger recombination time of this quantum dot emitting at 1.55 μm is comparable to the typical Auger recombination times on the order of a few μs measured in traditionally grown InAs/GaAs quantum dots emitting at around 900 nm.
Generation of GeV protons from 1 PW laser interaction with near critical density targets
Creators: name: Bulanov, Stepan S.
name: Bychenkov, Valery Yu.
name: Chvykov, Vladimir
name: Kalinchenko, Galina
name: Litzenberg, Dale William
name: Matsuoka, Takeshi
name: Thomas, Alexander G. R.
name: Willingale, Louise
name: Yanovsky, Victor
name: Krushelnick, Karl
name: Maksimchuk, Anatoly
Publisher: name: arXiv
Year: 2009
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The propagation of ultra intense laser pulses through matter is connected with the generation of strong moving magnetic fields in the propagation channel as well as the formation of a thin ion filament along the axis of the channel. Upon exiting the plasma the magnetic field displaces the electrons at the back of the target, generating a quasistatic electric field that accelerates and collimates ions from the filament. Two-dimensional Particle-in-Cell simulations show that a 1 PW laser pulse tightly focused on a near-critical density target is able to accelerate protons up to an energy of 1.3 GeV. Scaling laws and optimal conditions for proton acceleration are established considering the energy depletion of the laser pulse.
description: 26 pages, 8 figures
EVALUATING THE PRIORITY INDEX FOR THE INFRASTRUCTURAL PLANNING OF SMART CITYA CASE STUDY OF VADODARA
Creators: name: Ritika Kashyap
name: Jagruti Shah
Publisher: name: Reliability: Theory & Applications
Year: 2021
Subjects: Indicators
Infrastructure
Smart city
Urbanization
Vadodara

description: The Infrastructure sector contributes about 5% of GDP to the Indian economy and is highly responsible for the development of the country. As per the planning commission infrastructure investments are estimated to touch 8% GDP. Almost 37% of the investment in infrastructure came from the private sector. As per the census 2011, India’s current population is 130 crore and 31% of the population is residing in urban areas. India stands at 58th rank out of 80 countries in the Quality of life Index 2020, which is based on various indicators like literacy rate, life expectancy rate, etc. To achieve a better quality of life and livelihood, more people are migrating from rural areas to urban areas, which is leading to urbanization. For accommodating this huge population in the cities, the government of India has initiated the Smart City Program. Under this program, 100 cities in India have been selected. A total of 6 cities of Gujarat is nominated for the same, amongst which Vadodara is one of them. This study comprises evaluating the best indicator suitable for the development of smart cityVadodara and also providing the suitable recommendations for that indicator.
On Instanton Effects in F-theory
Creators: name: Blumenhagen, Ralph
name: Collinucci, Andres
name: Jurke, Benjamin
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We revisit the issue of M5-brane instanton corrections to the superpotential in F-theory compactifications on elliptically fibered Calabi-Yau fourfolds. Elaborating on concrete geometries, we compare the instanton zero modes for non-perturbative F-theory models with the zero modes in their perturbative Sen limit. The fermionic matter zero modes localized on the intersection of the instanton with the space-time filling D7-branes show up in a geometric way in F-theory. Methods for their computation are developed and, not surprisingly, exceptional gauge group structures do appear. Finally, quite intriguing geometrical aspects of the one-loop determinant are discussed.
description: 52 pages, 8 figures, 13 tables; v2: extended discussion of matter zero modes, refs added; v3: sections 3.3 + 4.1 restructured
Microwave plasma diagnostics
Creators: name: Shankowski, Allison Eugene
Publisher: name: University of British Columbia
Year: 2011

description: This thesis is concerned mainly with developing accurate microwave methods for determining electron-density distributions in transient plasma columns. Two new methods have been developed and these have been evaluated by comparing with other methods. The first is a microwave refraction technique which depends on multiple reflections of an obliquely-incident microwave beam between the plasma critical layer and the walls of the discharge tube. It offers several advantages over previous techniques using microwave refraction; it is simpler and faster to implement, and yields accurate and more reliable results. Several methods for reconstructing profiles from refraction data are described. The second method depends on reflection measurements at normal incidence, and is suitable for plasmas in which the maximum plasma frequency is greater than the applied frequency. This method is based on measuring the rate of change in phase of the reflected signal due to Doppler shift in frequency produced by motion of the plasma critical layer. It has the advantage that the required data can be obtained from relative phase measurements which are less subject to experimental error than absolute phase measurements. Several methods of reconstructing profiles are developed. Approximate profiles can be determined from data at two frequencies only, while more detailed profiles involve applying a step-by-step procedure to data obtained at several frequencies. The sensitivity of the method to certain experimental errors is investigated and the validity of ray theory in the normal-incidence application is examined. A few related measurements were carried out in order to examine the validity of some assumptions made in connection with the microwave methods for determining profiles. The effect of polarization, the effect of altering the discharge-current waveform, and the possibility of a density gradient in the axial direction were investigated. Iangmuir double probes were used in a few cases to obtain an independent measurement of the electron-density distribution. Using the microwave refraction technique, extensive measurements were carried out in an afterglow plasma for various discharge conditions. A few interesting characteristics were observed, and a possible reason for the observed shape of electron-density profiles is suggested.
GEO-TAGGING OF AGRICULTURAL PRODUCTS USING MOBILE APPLICATION IN REMOTE AREAS
Creators: name: Rushi Sheth
name: Keyur Brahmbhatt
Publisher: name: Reliability: Theory & Applications
Year: 2021
Subjects: Geo-tagging
Mobile Application
GPS
Agriculture

description: Geo-Tagging is a popular term in the market nowadays. Be it a blog post or a status update on social media, things are getting geotagged. If a person adds a new post on social media giants like Instagram, Facebook, Snapchat he enjoys features like adding location to the post which is an instance of Geo-Tagging. Geo-Tagging substantially means adding crucial geographical information like longitude, latitude, altitude to the metadata of photos, video files, audio, etc. In a country like India where agriculture accounts for about quarter of GDP and employs about 50% of Indian work force, the concept of geotagging can fulfill wide range of objectives. Various laboratories in India carry out a timely test on agriculture products to ensure quality, nutrition efficiency and pesticide residues, hence sample collectors go for collecting different agriculture products. However, to verify whether the samples are collected from the same place as claimed or not is quite difficult. In this paper one such solution is proposed which can be used by laboratories to carry out sample collection by capturing picture of sample in a mobile application, fetching latitude and longitude in background to geotag each sample, hence maintaining the authenticity of the sample.
A perturbative expansion scheme for supermembrane and matrix theory
Creators: name: Lechtenfeld, Olaf
name: Nicolai, Hermann
Publisher: name: Berlin, Heidelberg : Springer
Year: 2022
Subjects: subject: Field Theories in Higher Dimensions
subject: M(atrix) Theories
subject: Supersymmetric Gauge Theory
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We reconsider the supermembrane in a Minkowski background and in the light-cone gauge as a one-dimensional gauge theory of area preserving diffeomorphisms (APDs). Keeping the membrane tension T as an independent parameter we show that T is proportional to the gauge coupling g of this gauge theory, such that the small (large) tension limit of the supermembrane corresponds to the weak (strong) coupling limit of the APD gauge theory and its SU(N) matrix model approximation. A perturbative linearization of the supersymmetric theory suitable for a quantum mechanical path-integral treatment can be achieved by formulating a Nicolai map for the matrix model, which we work out explicitly to O(g4). The corresponding formulæ remain well-defined in the limit N → ∞; this result relies on a cancellation of infinities not present for the bosonic membrane, indicating that the N → ∞ limit does not exist for the purely bosonic matrix model. Furthermore we show that the map has improved convergence properties in comparison with the usual perturbative expansions because its Jacobian admits an expansion in g with a non-zero radius of convergence. Possible implications for unsolved issues with the matrix model of M theory are also mentioned.
A note on Lagrangian submanifolds in symplectic 4m-manifolds
Creators: name: Zhang, Yuguang
Publisher: name: Cambridge : Cambridge University Press
Year: 2022
Subjects: subject: Lagrangian submanifolds
subject: symplectic 4m-manifolds
subject: Einstein metric
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: This short paper shows a topological obstruction of the existence of certain Lagrangian submanifolds in symplectic 4m -manifolds.
HAND GESTURE RECOGNITION USING MORPHOLOGICAL OPERATION
Creators: name: Devnani, Manisha H.
name: Udesang K Jaliya
Publisher: name: Reliability: Theory & Applications
Year: 2021
Subjects: image recognition
image processing
image acquiring
morphological operations
Human computer interface

description: A nonverbal communication involves movements of different body parts to communicate a particular message. Hand, face and lips movements or other movement of body parts are regarded as gestures. In this paper I have proposed a method based on hand gesture recognition to recognize the different gestures used by deaf people to communicate using morphological operation. This will help to communicate between deaf and dumb people and normal public. In earlier systems the use of colour markers and gloves for gesture recognition has been used but it resulted in delay in processing time and sometimes inconvenient for the user.
IDENTIFICATION OF ADULTERATION IN HOUSEHOLD CHILLI POWDER FROM ITS IMAGES USING LOGISTIC REGRESSION TECHNIQUE
Creators: name: Nilam Desai
name: Dharmendra Patel
Publisher: name: Reliability: Theory & Applications
Year: 2021
Subjects: chilli powder
adulteration
logistic regression
household spices

description: Adulteration is proof of food quality deterioration with either adventitious or deliberate methods through the production of synthetic mixtures, by-products etc. Within a nation such as India, where the population is enormous, and where the buyer is not noticed, the display of corruption is hardly shocking. Everyday use, such as fruit, spices and milk, is seen as much as our dismissal defiled. Some manual procedures occur in everyday foodstuffs to detect adulteration. Yet human mistakes can make it unreliable. To make this process automatic, we are introducing a novel method to identify adulteration in Kashmiri chilli powder by its images. Here, we are considering adulteration as brick powder mixed chilli powder. We have used 100 pure red chilli powder images and 50 red chilli powder which has been mixed with bricks powder. To classify images, we have used logistic regression and got 82% accuracy in process implementation.
Searching for the subject: new narratives through installation.
Creators: name: Ozolins, Brigita
Publisher: name: University Of Tasmania
Year: 2023

description: This project has visually explored the relationships between language, knowledge and subjectivity. Its conceptual foundations have been developed through an engagement with post-structural theory, literature and personal experience. Its visual language has been formed by adopting aspects of the theories of postproduction and relational aesthetics of Nicolas Bourriaud in tandem with early conceptual arts aesthetic of administration. The result of the project is a series of installations that focus on viewer experience and offer the possibility of developing new narratives about our relationship to language and knowledge. The installations incorporate already existing materials, cultural signs, objects and ideas associated with institutional practices of collecting, manipulating and disseminating information. The familiar language of bureaucracy has thus been used to create a network of seemingly interconnected scenarios that engage the viewer in the shifting roles of protagonist, subject, witness or voyeur. A sense of uncertainty and confusion is produced, evoking the idea of a fractured subjectivity in a state of limbo, a condition in which meaning is gained only through attempting to piece together the different narratives on offer. The nature of our relationship to language and knowledge is thus evoked through physical and psychological interaction as well as visual engagement with the work. The project's concern with language, knowledge and information systems harks back to the conceptual art movement of the1960s and to contemporary art's accompanying engagement with philosophy, in particular post-structuralism. Within this context, it has re-visited and re-assessed ideas about the role of language in defining contemporary subjectivity and has explored strategies for conveying those ideas through installation. From Kosuth to the Kabakovs, it references a broad spectrum of artists who have investigated related themes using an almost uncategorisable array of non-traditional materials, styles and strategies. The project has concluded that we are fragmented subjects in a state of limbo, our relationship to language and knowledge characterised by paradox, anxiety, complicity and challenge - and a continued search for meaning and wholeness despite their seeming absence. Ultimately, it has presented the viewer with an opening: a new network of possible narratives about language, knowledge and self. Although these narratives appear to be linked, they fail to come to a neat conclusion. Just as contemporary subjectivity is in a state of limbo, so too, are the scenarios depicted in the installations.
The half-twist for U_q(g) representations
Creators: name: Snyder, Noah
name: Tingley, Peter
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Algebra (math.QA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: We introduce the notion of a half-ribbon Hopf algebra, which is a ribbon Hopf algebra along with a distinguished element $t$ corresponding to twisting a ribbon by 180 degrees (the half-twist). We show that U_q(g) is a (topological) half-ribbon Hopf algebra, but only if one uses a modified ribbon element. We then discuss some consequences of using this modified ribbon element.
description: 23 pages. v2: diagrams corrected. v3: Final draft, to appear in Algebra & Number Theory
Design of a 32-bit Arithmetic Unit based on Composite Arithmetic and its Implementation on a Field Programmable Gate Array
Creators: name: Pinkiewicz, T
Publisher: name: University Of Tasmania
Year: 2023

description: As we advance into the new century, computers of the future will require new techniques for arithmetic operations, which take advantage of the modern technology and yield accurate results. Floating-point arithmetic has been in use for nearly forty years, but is plagued with inaccuracies and limitations which necessitate introduction of a new concept in computer arithmetic, called Composite Arithmetic. Composite Arithmetic combines fixed-point and floating-point arithmetic into one integrated concept where numbers are automatically assigned the right form. This negates the need for differentiating between integer and real numbers in programming languages and allows for better accuracy in calculations. The concept has two main forms: exact and inexact. The exact form deals with integers and rational numbers, while inexact form deals with numbers that cannot be represented exactly. To develop and implement such concept in hardware, tools are needed that will allow for easy design and re-design process, at a low cost. A device that meets these requirements is a Field Programmable Gate Array. This electronic device provides quick and easy way of designing the system and then implementing it by downloading data to the device. It can then be tested and reprogrammed as desired, without the need for a new device. This thesis is an attempt to design and implement Simple Composite Arithmetic Machine (SCAM), which will be capable of performing operations on exact numbers (rational and integer numbers). The core of the research is Composite Arithmetic Unit, which contains operations like Multiply, Divide, Add and Subtract. It also can find Greatest Common Divisor and cast out common factors of two numbers. The CAU is controlled using Control Unit and Feedback Unit, and results are stored in the Register Unit. The SCAM is therefore a basic microarchitecture that will form a basis for further research in this field.
LOW COST AUTOMATIC FIRE ALARM AND HAZARD LOCATION INTIMATING SYSTEM FOR INDUSTRIAL APPLICATION
Creators: name: B. H. Pithadiya
name: H. N. Parikh
name: H. N. Pandya
name: H. N. Kapse
Publisher: name: Reliability: Theory & Applications
Year: 2021
Subjects: Node-MCU (ESP8266)
Smoke sensor
Flame sensor
Temperature and Humidity sensor
GSM

description: Burn tragedy is a significant hazard to human life and properties. Automatic fire alarm device allows for real-time tracking, monitoring and intimation. Once the fire happens, it gives early warning and helps to the fire loss. It is versatile security and alarm system which can be used by individuals, corporations or industrial establishments. The concept behind this project is to have a quick, easy, accurate and low-cost fire sensing and location-intimating device for users to get support in critical situations. The system can be positioned at any remote location that the consumer can quickly access with the aid of GSM technology. In this it is proposed that NodeMCU acquire signals from different sensors and control to manage communication with property owner. This is carried out by sending SMS immediately to owner in initial stage and to fire brigade in critical stage to resolve fire hazard. Different sensors incorporated within system are smoke, fire and flammable gas sensor. It helps to estimate specific threshold values in hazardous condition and alarms the buzzer accordingly. If in high emergency the system sends SMS consisting of the area and address location to the user / in charge person and fire brigade respectively.
title: Non-Clinical Risk Factors of Hysterectomy
Creators: name: Lee, Chung-won
Publisher: name: Utah State University
Year: 2001

description: In the United States, hysterectomy is one of the most commonly performed operations for women that is not related with pregnancy. However, not enough attention has been paid to how women's exposure to the surgery differs according to their social characteristics as well attitudinal/behavioral factors. Using cohort data from the National Longitudinal Surveys of Mature Women, this study investigated two aspects: (1) the association between socioeconomic status and hysterectomy and (2) the impact of women's attitudinal/behavioral characteristics on hysterectomy. With Cox proportional hazards analyses, this study found that women's exposure to hysterectomy significantly differs according to their social and attitudinal standings. Social characteristics that were found to be statistically significant risk factors of hysterectomy include women's education, employment status, and marital status. Among additional and behavioral factors, women's locus of control and number of children were identified as statistically significant risk factors. These findings may be used to enhance consumer awareness of hysterectomy and aid in policy reconstruction.
Screening of electromagnetic field fluctuations by s--wave and d--wave superconductors
Creators: name: Fermani, Rachele
name: Scheel, Stefan
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We investigate theoretically the shielding of the electromagnetic field fluctuations by s-wave and d-wave superconductors within the framework of macroscopic quantum electrodynamics. The spin flip lifetime is evaluated above a niobium and a bismuth strontium calcium copper oxide (BSCCO) surface, and the screening effect is studied as a function of the thickness of the superconducting layer. Further, we study the different temperature dependence of the atomic spin relaxation above the two superconductors.
description: 7 pages, 5 figures
MATHEMATICAL ANALYSIS OF A VACCINATION MODEL WITH IMMIGRATION AND GENERALIZED SATURATED INCIDENCE RATE FUNCTION
Creators: name: Mokati, Deepti
name: V.H. Badshah
name: Gupta, Nirmala
Publisher: name: Reliability: Theory & Applications
Year: 2021
Subjects: Basic reproduction number
Equilibrium
Vaccine
Stability
Ruth-Hurwitz Criteria

description: In the paper , we propose a vaccine-dependent mathematical model for the treatment of diseases at the population level. Determine equilibrium points : disease-free and endemic and basic reproduction number R0 .We formulate theorems on stability and establish the proof of the theorems by Ruth-Hurwitz criteria..In addition, numerical simulations of the model is carried out to show the efficacy of the vaccine . Moreover, graphically it is clearly seen the effectiveness of vaccine for SIR epidemic model with vaccination and without vaccination.
MULTI OBJECTIVE OPTIMIZATION IN DRILLING OF GLASS FIBER/EPE FOAM SANDWICH COMPOSITE BASED ON GREY RELATIONAL ANALYSIS
Creators: name: Hariketan Patel
name: Jigneshkumar Patel
name: Gajera, Bharat
name: Hiteshkumar Rana
Publisher: name: Reliability: Theory & Applications
Year: 2021
Subjects: Glass fiber
thrust force
delamination
ANOVA
grey relational analysis (GRA)

description: A grey relational analysis is a novel decision-making technique for forecast, developing relational analysis in numerous areas of manufacturing or production processes in industry. In this research paper, the objective is to optimize the drilling process input parameters considering assigned weight fraction of output quality characteristics using grey relational analysis in drilling of Glass fiber/ EPE foam sandwich composite. The output quality characteristics considered are thrust force, torque and delamination under the experimental domain of spindle speed, feed and drill diameter. The drilling experiments were designed as per Taguchi design of experiments using L25 orthogonal array. The best possible input process parameters which give minimum thrust force, torque and delamination factor have been established by the combined methodology of orthogonal array design of experiments ANOVA and grey relational analysis. The results indicate that most significant factor is drill diameter followed by feed and spindle speed respectively. The experimental results have shown that with the help of grey relational analysis, output quality characteristics can be enhanced efficiently.
PARAMETRIC STUDY OF MACHINE FOUNDATION SUPPORTING RECIPROCATING MACHINE USING ELASTIC HALF SPACE MODEL BY FEM AND CLASSICAL METHOD
Creators: name: V.R. Dhut
name: K.Y. Desai
name: K.N. Sheth
Publisher: name: Reliability: Theory & Applications
Year: 2021
Subjects: Machine Foundation
Elastic Half Space Model
Structural Dynamics

description: Machine foundation is a requisite part of any industry; costs less as compared to the cost of machine and losses caused due to its failure can cause a big loss to any industry. A machine foundation needs to be designed carefully as static as well as dynamic loads are acting on it due to working of machine. The machine weighs several tons and is required to design the foundations having dimensions of several meters but amplitudes restricted to only a few microns. In addition, natural frequency of the machine foundation is depends on the soil lying below the foundation. This necessitated a deeper scientific investigation of dynamic loading and analysis. Elastic Half Space Method (Recommended by ACI 351.3R-04 “Foundation for Dynamic Equipment”) proposed by Whitman and Richart gives thus necessary importance to damping and embedment depth effect. Finite Element (FE) is the most commonly accepted analysis tool for solution of engineering problems. Effective Pre & Post-processing capabilities make modeling and interpretation of results simple. It is relatively easy to incorporate changes if any and re-do the analysis without much loss of time. STAAD Pro V8i is chosen for this Literature for analysis of Machine Foundation by Finite Element Method. In this literature three different machines of 150 rpm, 250 rpm, and 450 rpm are taken into account and six different soil types: Medium Clay, Stiff Clay, Hard Clay, Loose Sand, Medium Sand and Dense Sand are considered. Foundation sizes are optimized according to soil cases and each case is analyzed using classical method and FEM for 0.8, 1 and 1.2 times the soil parameters to cover the confidence range. Codal Criteria are taken as per IS:2974-1982.
PERFORMANCE ANALYSIS OF MULTI-BAND PSS IN MODERN LOAD FREQUENCY CONTROL SYSTEMS
Creators: name: Kumar, Arvind
name: Sharma, Preeti
name: Bhadu, Mahendra
name: Hukam Chand Kumawat
name: S. K. Bishnoi
name: K.G. Sharma
Publisher: name: Reliability: Theory & Applications
Year: 2021
Subjects: Load Frequency Control
MB-PSS
Five-Area Power System
Notch Filter
Power System Stabilizers

description: The large-scale power systems are subjected to continuous disturbance due to the existence of sudden load perturbations, parameter uncertainties, basic variation etc. The Load Frequency Control (LFC) is a part of the power system stability for controlling power interchange and frequency deviation. In this paper, the LFC problem is analyzed with various types of Power System Stabilizers (PSSs) like PSS2B, PSS3B and PSS4B, to overcome the effect of load disturbance. Performance of PSSs, with and without notch filter, is examined. Further, the PSSs are designed to operate in both continuous and discrete mode for the given test LFC system. The continuous mode PSS4B having notch filter connected in cascaded, gives better time domain response among other types of PSSs. The proposed approach is simulated in MATLAB/Simulink environment for a five-area test power system consisting of five generating units having a non-reheated turbine, to highlight the efficacy in terms of robustness.
PERFORMANCE ANALYSIS OF ROBUST CONTROL TECHNIQUES FOR LOAD FREQUENCY CONTROL OF MULTI AREA POWER SYSTEM
Creators: name: Kumar, Arvind
name: Sharma, Preeti
name: Bhadu, Mahendra
name: Hukam Chand Kumawat
name: Verma, Kusum
Publisher: name: Reliability: Theory & Applications
Year: 2021
Subjects: Load Frequency Control
Linear Quadratic Gaussian controller
Fuzzy Logic Controller
Station-to-Grid
Robust Controller

description: Robust control techniques are presented here for performance analysis of load frequency control in a five area interconnected power systems considering the impact of time delay and noise. The different controllers investigated in this paper are, fuzzy logic controller, station-to-grid supplementary controller and linear quadratic gaussian controller. The robust controllers are design to palliate the time delay response by using pade approximations and mitigate the measurement noise effects. Intelligent and supplementary controllers can perform better than the conventional controllers, proportional integral controller. When the impact of time delay is considered in area control error signal, fuzzy logic controller gives better dynamic response. When both time delay and noise are considered in area control error signal of system, LQG controller gives better dynamic performance.
Romancing the Reef: history, heritage and the hyper-real
Creators: name: Pocock, C
Publisher: name: University Of Tasmania
Year: 2023

description: The Great Barrier Reef is regarded as one of the natural wonders of the world and is recognised as having World Heritage significance. The wealth and complexity of its natural attributes form the basis of a rich and complementary human history. However, management of the region is focused on the conservation of natural attributes, sometimes at the cost of human interests and cultural values. This is symptomatic of the way in which many heritage properties are managed and is a source of problems in the identification and interpretation of heritage. There is a need to better understand the human dimensions of such 'natural wonders' to ensure effective management. In order to address some of these issues, this thesis explores visitor experiences and knowledge of the Great Barrier Reef with a particular focus on the non-local experiences and knowledge that underpin the region's global recognition. One of the major issues for management is the mutable nature of heritage values. This research therefore seeks to develop an understanding of how such heritage values are formed, transformed and sustained over time. It takes an historical approach to understand the ways in which visitor knowledge of the Reef has been constructed and transmitted both temporally and spatially. Methods novel to heritage assessments are developed and implemented to identify and contrast visitor experiences in the past and those of the present. The study focuses on visitor sensory experiences of the Reef as a means to understand knowledge of place. A concept of sensuousness is defined and used to understand how knowledge of place is constructed through the human senses, and communicated within and between generations. The research identifies a number of significant changes in the way in which visitors have constructed and understood the Great Barrier Reef. These include the creation of idealised Pacific islands at the expense of an Australian location and character; the transformation of the dangerous underwater world into a controlled and benign coral garden; and the synecdoche of the coral garden as representative of the Reef as a whole. Central to these constructions is the way in which simulacra are used to create experiences that are increasingly both dislocated and disembodied. As a consequence visitor knowledge of the Reef has shifted from sensuous perception of the Reef as a place or series of places, to the construction of imaginative and photographic simulacra that manifest as experiences of space and non-place. Through the exploration of this case study, the thesis makes a contribution to both theoretical and methodological issues in heritage studies.
Variation in two families of compounds across stems of western red cedar (Thuja Plicata Donn.).
Creators: name: Jiang, Kuo-Shii
Publisher: name: University of British Columbia
Year: 2011

description: A quantitative analytical method, using column chromatography, was developed for determining the thujaplicin methyl ethers (T.M.E.) in acetone extracts of western red cedar wood. A quantitative method, using gas-liquid chromatography, was developed for nezukone, while thujaplicins were determined by paper chromatography. These techniques were used to examine distribution of T.M.E. and thujaplicins across western red cedar stems. Results support the theory that polyphenols are formed in situ at the sapwood-heartwood boundary. The findings also indicate that biochemical mechanisms operate for several years after visible heartwood has been formed. Additionally, the increase in ratios of monohydroxy- and dihydroxy- to nonhydroxylated T.M.E. with wood ageing in the tree suggests a hydroxylation reaction as mechanism for interconversion of some of the lignans in western red cedar. However, this conclusion cannot be made for the hydroxylation of nezukone to β-thujaplicin to β-thujaplicinol. The thujaplicins were shown to be present only in the heartwood of western red cedar. α-Thujaplicin was not found in the present study, but it was certainly present in a previous study on an American grown western red cedar. Some characteristic chemical properties of β-thujaplicinol, which has an additional hydroxyl group to the thujaplicins, are studied. Its ferric chelate was found to be unstable to change in pH values of solutions, while thujaplicins complexes are stable. Some observations on the determination of thujaplicin in alkaline solutions, as well as methods for extracting these compounds, are made.
title: Predicting Digestibilities of Alfalfa Hays with Near Infrared Reflectance Spectroscopy
Creators: name: Clark, David H.
Publisher: name: Utah State University
Year: 1985

description: Forty-four alfalfa hays from different cuttings, maturities, and locations were fed to sheep in a digestion study. Subsamples of the hays along with corresponding fecal samples were ground and analyzed for dry matter, (DM), organic matter (OM), crude protein (CP), acid detergent fiber (ADF), neutral detergent fiber (NDF), and permanganate lignin. In vivo digestibility (IVDMD) were also determined fro each hay.
The hay and fecal samples were scanned with a near infrared reflectance spectrophotometer. Chemical and digestible data for each hay and fecal sample were entered into the computer and separate multiple regression equations developed.
Fifteen other alfalfa hays with known chemical and digestible data were used to test the alfalfa equation. Standard errors of analysis (%) and corresponding r2s were: 3.55 and 0.81, 0.23 and 0.99, 2.44 and 0.94, 0.85 and 0.98, 1.33 and 0.96, 1.13 and 0.96, 1.13 and 0.80 for DDM, CP, IVDMD, ADF, NDF, and lignin, respectively. Thirty fecal samples with known chemical data were used to test the fecal equation. Standard errors of analysis and corresponding r2s were: 0.13 and 0.96, 0.41 and 0.93, 0.87 and 0.96, 1.79 and 0.90, 2.10 and 0.91, 1.46 and 0.90 for DM, OM, CP, ADF, NDF and lignin, respectively.
Using the spectral information from fecal samples and the chemical composition of alfalfa samples to analyze other alfalfa samples was examined. Twelve other alfalfa hays with known chemical and digestible data were used to test the fecal equation. Standard errors of analysis (%) and corresponding r2s were: 4.05 and 0.01, 1.54 and 0.48, 1.63 and 0.71, 13.16 and 0.55, 1.43 and 0.35, 6.52 and 0.13, 4.30 and 0.63, 2.36 and 0.09, 5.75 and 0.49 for DM, OM, CP, IVDMD, ash, NDF, ADF, lignin, and DDM respectively.
Hay fecal samples were sieved to study the utility of using sieving as a procedure to support chemical data in predicting DDM. Use of sieving (alfalfa and fecal) and chemical data (other than IVDMD) increased the precision of predicting DDM (R2 = 0.76), over using IVDMD and ash concentrations to predict DDM (R2 = 0.66).
title: The Role of Iron and Reactive Oxygen Species in Particulate Air Pollution-Dependent Biochemical and Biological Activities
Creators: name: Smith, Kevin Richard
Publisher: name: Utah State University
Year: 1999

description: Particulate air pollution is known to exacerbate respiratory diseases, such as asthma and chronic obstructive pulmonary disease, in humans. It has been proposed that transition meta ls from inhaled particles may play a role in this exacerbation by generating radical species leading to damage in the lungs.
The aim of this research was to determine the role that iron from particulate air pollution played in the generation of reactive oxygen species and subsequently the induction of inflammatory mediators in cells in culture. The production of reactive oxygen species by particulate air pollution was found to be dependent on the mobilization of iron from the particles by chelators, such as the physiologically relevant citrate. The amount of iron mobilized from the combustion particulate, coal fly ash, was dependent on the type of coal used to generate the fly ash and was greatest
in the smallest size fraction collected for three different coal types. In addition, the amount of iron mobilized from coal fly ash by citrate correlated closely with the amount mobilized in human lung epithelial (A549) cells, as indicated by induction of the iron storage protein, ferritin. The amount of the proinflammatory cytokine, interleukin-8, secreted in response to coal fly ash treatment varied with the amount of iron mobilized intracellularly from the particles, with the greatest response to the smaller size fractions which released the largest amounts of iron. There was a direct relationship, above a threshold level of bioavailable iron, between the level of interleukin-8 and bioavailable iron in cells treated with coal fly ash. Tetramethyl thiourea and dimethyl sulfoxide prevented the increased production of interleukin-8 by human lung epithelial cells treated with coal fly ash, suggesting the role of a radical species in the induction of this inflammatory mediator.
The mobilization of iron from coal fly ash by citrate or in human lung epihelial cells, as well as the induction of interleukin-8, did not correlate with the total amount of iron in the particles. Instead, preliminary results suggest that these measured values vary directly with the amount of iron contained in the aluminosilicate fraction of the fly ash.
title: Financial Feasibility of High Performance Low Rise Steel Buildings
Creators: name: Batista, Yolanda Maria Baez
Publisher: name: Utah State University
Year: 2010

description: Comparative performance evaluation including life cycle cost is currently being conducted on a series of conventional and base-isolated case study buildings. Alternative design approaches and their influence in cost were to be evaluated . This investigation is intended to contribute in the development of isolated structures by allowing engineers to communicate the cost of higher performance systems to their clients. The reported effort is part of a larger cost-benefit study for isolated steel buildings, and the purpose of this thesis is to compare initial investment of 3-story conventional and isolated steel buildings and determine how isolation affects the cost of the structure.
The relative cost of seismic isolation, as a percentage of the total cost, may be higher in this study than for typical U.S. isolation applications because the relative premium is greater for a short building than a tall building. The cost of isolation layer for this building is in the order of 11.7% to 12.4% of the total cost. Such a large cost premium may be a huge restraint for most owners; therefore, strategies to reduce the isolation premium cost need to be investigated in detail.
PERFORMANCE EVALUATION USING FRAGILITY ANALYSIS OF RC FRAME WALL STRUCTURES
Creators: name: Khushali Desai
name: Rutvik Sheth
name: Keyur Patel
Publisher: name: Reliability: Theory & Applications
Year: 2021
Subjects: Frame-Wall Structure
IS 16700
Incremental Dynamic Analysis
Fragility Analysis
Performance Evaluation

description: A frame-wall structure provides resistance to lateral loading by a combination of shear walls and rigid frames. Due to the difficulties in predicting earthquakes and its random nature, probabilistic analysis is proposed in analyzing structural seismic responses. Fragility curve represents a continuous relationship between a seismic intensity measure and the probability that the structure will reach or exceed a predefined damage state. The fragility analysis is carried out using lognormal distribution of clouds of responses obtained using Incremental Dynamic Analysis (IDA). In the present paper, 15, 18, 22 and 26 storeys RC moment resisting frame-wall structure are analysed for seismic zone IV. The structures are assumed to be resting on hard soil and are analysed using ETABS-2016 and designed as per IS code provisions. Geometrical configuration of the structure is considered as per IS 16700:2017. The performance evaluation of above frames is done using SeismoStruct software for set of 11 recorded ground motions of past Indian earthquake varying in range of magnitude from 5.6 to 7.8. For this study, limit states Immediate Occupancy (IO), Life Safety (LS) and Collapse Prevention (CP) are considered as the performance criteria referred from FEMA 356. From the fragility curves, it is observed that there is negligible probability of collapse for spectral acceleration corresponding to Design Basis Earthquake. Also, probability of exceedance increases as the number of storey increases at given level of spectral acceleration. This is due to reduction in median collapse capacity of building.
f(R) theories
Creators: name: De Felice, Antonio
name: Tsujikawa, Shinji
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Over the past decade, f(R) theories have been extensively studied as one of the simplest modifications to General Relativity. In this article we review various applications of f(R) theories to cosmology and gravity - such as inflation, dark energy, local gravity constraints, cosmological perturbations, and spherically symmetric solutions in weak and strong gravitational backgrounds. We present a number of ways to distinguish those theories from General Relativity observationally and experimentally. We also discuss the extension to other modified gravity theories such as Brans-Dicke theory and Gauss-Bonnet gravity, and address models that can satisfy both cosmological and local gravity constraints.
description: 156 pages, 14 figures, Invited review article in Living Reviews in Relativity, Published version, Comments are welcome
The conservation of the Hamiltonian structures in the deformations of the Whitham systems
Creators: name: Maltsev, A. Ya.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We consider the construction of the deformed Whitham system for the KdV-equation in the one-phase case and investigate the conservation of the Hamiltonian properties in this situation. It is shown then, that both the Gardner - Zakharov - Faddeev and the Magri brackets give the deformed Dubrovin - Novikov brackets (the brackets of Dubrovin - Zhang type) for the deformed Whitham system constructed by our procedure. The general approach used in the paper gives a scheme for the averaging of the Poisson structures in the general situation.
description: 54 pages, 2 figures