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Airborne Pollens and Symptoms Score in Allergic Patients Undergoing Immunotherapy | In the last years standardized monitoring techniques offered means to obtain pollen calendars (1,2). | In estimating the state of thrusting/ballistic endoatmospheric projectiles for the end purpose of impact point ::: prediction (IPP), the total observation time, the wind effect and the sensor accuracy significantly affect the IPP ::: performance. First the tracker accounting for the wind effect is presented. Following ... | eng_Latn | 51,425 |
Grey Prediction of Port Throughput Based on GM(1,1,α) Model | According to the situation of lack of statistical data, this paper makes use of the time sequence prediction theory of nonlinear grey GM(1,1,α) Model to predict the port throughput based on the data of LianYungang port throughput from 2003 to 2007, and expounds the application of nonlinear grey forecasting method. Resu... | The navigation condition of tributaries at TGP reservoir area has improved essentially but it still lacks navigation grading standard,for the normal grading standard of inland river takes no consideration of the effect of reservoir on the tributary channel navigation.So the normal grading standard can't be applied to d... | eng_Latn | 51,463 |
Crop planning in relation to climate change in rain fed regions. | Uncertainty and variability of rains both space and time is the major constraints affecting agricultural production in rain fed farming. Scientific study on the quantum and distribution of rainfall ... | This paper will discuss our approach to convert these images into application maps (i.e. shape files) without much effort or special knowledge from the pilot/operator, which could then be a new service to a customer. These application maps could then be easily uploaded into the spray system computer to make variable-ra... | eng_Latn | 51,465 |
Spatial Regression-Based Environmental Analysis in Infectious Disease Informatics | Studying relationships between environmental factors and infectious diseases is an important topic in public health research. The existing studies have been focused on temporal correlations among environmental risks and infectious disease outbreaks. In this paper, we advocate the importance of spatial data analysis in ... | Abstract This paper describes the philosophy, algorithms, and implementation of a computer simulation model for land use forecasting, and the capability of generating maps of these forecasts. The model is applicable to SMSA's organized on a census tract basis by counties. The forecasts are macro to the census tract lev... | eng_Latn | 51,519 |
Experimental Studies on Hygrothermal Behaviour of ETICS | A preliminary test was carried out to assess where, in a facade, was surface condensation more severe: near the corners or in the middle of the wall. The test was performed on a building located in the University of Porto campus. Devices were set up on the North facade covered with ETICS of a technical building located... | In Section 1 several scenarios were selected that were based on instrumentally observed historical climatic data (HIST) and on results from a general circulation model (GISS). In this section we employ indices or models to analyze the impacts associated with these scenarios on the thermal climate (growing degree days),... | kor_Hang | 51,535 |
Using 4C seismic data to improve prospect appraisal : A case study from offshore Trinidad | There are many situations where OBC data can make a difference: Gas occlusion, fault shadows and shear wave splitting are some of the problems that were overcome on this project. | Abstract This paper describes the philosophy, algorithms, and implementation of a computer simulation model for land use forecasting, and the capability of generating maps of these forecasts. The model is applicable to SMSA's organized on a census tract basis by counties. The forecasts are macro to the census tract lev... | eng_Latn | 51,536 |
Ordinal Regression Model for Forecasting En Route Controller Requirements | A model for forecasting enroute controller requirements was developed by Tien and Schonfeld [1] for incorporation into the FAA's NAS Strategy Simulator. In this study, one critical component in their work is improved by using probit regression model in order to more reasonably predict the number of controller positions... | Abstract There is a greater need than ever for the ability to accurately model urban system impacts resulting around the planet. Rapid urbanization is transforming landscapes from vegetation to an engineered infrastructure and thus altering land cover and land use. These alterations impact urban and global climate chan... | eng_Latn | 51,538 |
Study on resembling simulation experiment of spontaneous combustion in goaf | To study the impact of different types of ventilation leakage on spontaneous combustion in goaf,and in accordance with the different states of ventilation leakage in goaf,the goaf is divided into different regions of the fire danger,in order to judge the location of spontaneous combustion in goaf.By developing the rese... | ABSTRACTWe utilize the Internet search data from Google Trends to provide short-term forecasts for the inflow of Japanese tourists to South Korea. We construct the Google variable in a systematic way by combining keywords to minimize mean squared or mean absolute forecasting errors. We augment the Google variable to th... | eng_Latn | 51,539 |
Effective Learning Through Gaming Simulation Design | Recent education graduates and participants of the training course have also started to use gaming simulation in processes of organizational development of school administrations. Increasingly, more appropriate learning environments are constructed in the educational system, with a great potential to create effective l... | Leveraging grid computing technology, i.e. the visualization of distributed computing and data resources such as processing, network bandwidth and storage capacity to create a single system image, we present a Grid Air Quality Forecast System (G-AQFS). The modeling system consists of meteorological and dispersion model... | eng_Latn | 51,551 |
Deriving the Declining Areas and Analysing Their Spatial Characteristics Using the Spatial Autocorrelation Measure | This study aims to analyse the spatial characteristics and to draw the declining areas from the whole area of Chung-Cheong Province. For this purpose, the temporal and spatial conditions by the urban decline diagnosis indexes are utilized. Additionally, the spatial autocorrelation method was applied for extraction of t... | Abstract This paper describes the philosophy, algorithms, and implementation of a computer simulation model for land use forecasting, and the capability of generating maps of these forecasts. The model is applicable to SMSA's organized on a census tract basis by counties. The forecasts are macro to the census tract lev... | eng_Latn | 51,561 |
Research of change detection using GIS auxiliary data and samples | Land use change detection is important in the study of the globalization in the world.The research of change detection using remote sensing images have made great progress.But the auto-detection method is still not practical because of the method of the image segment,the low degree of automation.This paper proposes a n... | Abstract This paper describes the philosophy, algorithms, and implementation of a computer simulation model for land use forecasting, and the capability of generating maps of these forecasts. The model is applicable to SMSA's organized on a census tract basis by counties. The forecasts are macro to the census tract lev... | eng_Latn | 51,580 |
Looking for totals not averages. Ideally it would allow look up by zip code. | The best place would be to contact the National Weather Service for the area you are studying. They should have data on all weather patterns collected from weather stations all around the country. Some weather stations have only local data. \nYou could also check the weather almanac for the specific year you would l... | Sure! Start with the templates available right inside your word processor, check the packaging from your labels. There may be a website to download from or even a mini-CD. Generic or custom sizes can be entered into websites such as avery, mead, daytimers, franklinplanners, etc., etc. | eng_Latn | 51,612 |
On the stability and causality of scalar-vector theories | Various extensions of standard inflationary models have been proposed recently by adding vector fields. Because they are generally motivated by large-scale anomalies, and the possibility of statistical anisotropy of primordial fluctuations, such models require to introduce non-standard couplings between vector fields o... | Abstract: We study the pointwise behavior of the Fourier transform of the spectral measure for discrete one-dimensional Schrödinger operators with sparse potentials. We find a resonance structure which admits a physical interpretation in terms of a simple quasiclassical model. We also present an improved version of kno... | eng_Latn | 51,632 |
Group theoretical methods are used to study some properties of the Riccati equation, which is the only differential equation admitting a nonlinear superposition principle. The Wei–Norman method is applied to obtain the associated differential equation in the group SL(2, ℝ). The superposition principle for first order d... | The Wei-Norman formula locally relates the Magnus solution of a system of linear time-varying ODE with the solution expressed in terms of products of exponentials by means of a set of nonlinear differential equations in the parameters of the two types of solutions. A closed form expression of such formula is proposed, ... | Berzelius failed to make use of Faraday's electrochemical laws in his laborious determination of equivalent weights. | eng_Latn | 51,679 |
In this paper, we discuss linear inference for the lifetime distribution of components based on a Type-II censored lifetime data of reliability systems with known signatures. We derive the best linear unbiased estimators (BLUE) for the parameter(s) in general scale and location-scale parameter families. The exact compu... | We introduce two new families of univariate distributions that we call hyperminimal and hypermaximal distributions. These families have interesting applications in the context of reliability theory in that they contain that of coherent system lifetime distributions. For these families, we obtain distributions, bounds, ... | Berzelius failed to make use of Faraday's electrochemical laws in his laborious determination of equivalent weights. | eng_Latn | 51,688 |
This article argues that direct ecological impact needs to be incorporated into research on organizations and the natural environment, as complementary to conceptualizations of ecological impact as a social construction. Building on work in analytical sociology, it proposes to study socio-ecological mechanisms and thus... | Using in-depth ethnographic analysis of Kejetia’s artisanal gold mining community in Tongo (Northern Ghana), this article argues that governance is based on artisanal gold miners’ three-dimensional orientation towards both ‘above-ground’ social–political relations and regulations (a geometrically two-dimensional orient... | Berzelius failed to make use of Faraday's electrochemical laws in his laborious determination of equivalent weights. | eng_Latn | 51,693 |
We speculate on the role of relativistic versions of delayed differential equations in fundamental physics. Relativistic invariance implies that we must consider both advanced and retarded terms in the equations, so we refer to them as shifted equations. The shifted Dirac equation has some novel properties. A tentative... | In this paper we introduce and investigate a new kind of functional (including ordinary and evolutionary partial) differential equations. The main goal of this paper is to explore our new philosophy by some examples on functional ODEs and PDEs. For some typical examples, we prove the global existence of smooth solution... | We characterize stability under composition, inversion, and solution of ordinary differential equations for ultradifferentiable classes, and prove that all these stability properties are equivalent. | eng_Latn | 51,705 |
Strength of the null singularity inside black holes | We study analytically the Cauchy horizon singularity inside spherically symmetric charged black holes, coupled to a spherical, self-gravitating, minimally coupled, massless scalar field. We show that all causal geodesics terminate at the Cauchy horizon at a null singularity, which is weak according to the Tipler classi... | We give a detailed discussion of the construction of the Batalin-Vilkovisky BRST charge for the heterotic superstring. In particular, we completely solve the higher-ghost sector using a recursion relation. The gauge choice ▽+θ = 0, which we previously proposed for the superparticle, leads to a free quantum action. | eng_Latn | 51,713 |
Effects of space charge in beams for heavy ion fusion | A new analytic model is presented that accurately estimates the radially averaged axial component of the space-charge field of an axisymmetric heavy-ion beam in a cylindrical beam pipe. The model recovers details of the field near the beam ends that are overlooked by simpler models, and the results compare well to exac... | Spherically symmetric solutions in Brans-Dicke theory of relativity with zero coupling constant, $\omega=0$, are derived in the Schwarzschild line-element. The solutions are obtained from a cubic transition equation with one small parameter. The exterior space-time of one family of solutions is arbitrarily close to the... | eng_Latn | 51,720 |
Note on the point-splitting procedure to evaluate vacuum fluctuation in certain cylindrically symmetric backgrounds | We reexamine the two-point function approaches used to study vacuum fluctuation in wedge-shaped regions and conical backgrounds. The appearance of divergent integrals is discussed and circumvented. The issue is considered in the context of a massless scalar field in cosmic string spacetime. | Abstract In this work, we study the analyticity of Kuramoto–Sivashinsky type equations and related systems by exploring the applicability of the semigroup method, which was developed in Collet et al. [5] . We establish the analyticity, with respect to the spatial variable in a strip around the real axis, for a variety ... | eng_Latn | 51,729 |
Experimental investigation of resonantly forced oscillations of a two-degree-of-freedom structure | Abstract An experimental study of the response of a two-degree-of-freedom structure with quadratic non-linearities and a two-to-one internal resonance to an external harmonic excitation is presented. When the excitation frequency was close to the lower natural frequency of the structure, periodic, quasi-periodic, and c... | We derive asymptote solution of a homogeneous and isotropic universe governed by the quadratic form of the field equation of $f(T)$ gravity. We explain how the higher order of the torsion can provide an origin for late accelerated phase of the universe in the FRW. The solution makes the scalar torsion $T$ to be a funct... | eng_Latn | 51,736 |
Free boundary skin current magnetohydrodynamic equilibria | Function theoretic methods in the complex plane are used to develop simple parametric hodograph formulas that generate sharp boundary equilibria of arbitrary shape. The related method of Gorenflo [Z. Angew. Math. Phys. 16, 279 (1965)] and Merkel (Ph.D. thesis, University of Munich, 1965) is discussed. A numerical techn... | In the footsteps of our previous work \cite{RamatonBoschi} we generalize the Stefan-Boltzmann and Wien's displacement laws for the $ \textrm{AdS}_5 \times {\cal S}^5 $ spacetime, the background of the AdS/CFT correspondence foremost realization. Our results take into account the $ \textrm{AdS}_5 \times {\cal S}^5 $ ful... | eng_Latn | 51,738 |
The numerical research of runner cavitation effects on spiral vortex rope in draft tube of Francis turbine | The spiral cavitating vortex rope developed in the draft tube of Francis turbine under part load condition maybe causes serious pressure fluctuations and power swings, which threatens the safety and stability of the power plant operations. Many works have been performed to explore the mechanisms of it. In this paper, t... | In this paper we consider torsion gravity in the case of the Dirac field, and by going into the rest frame we study what happens when a uniform precession as well as a phase are taken into account for the spinor field; we discuss how partially conserved axial-vector currents and torsion-spin attractive potentials justi... | eng_Latn | 51,744 |
Lattice study of classical inflaton decay | We study numerically the decay of the inflaton by solving the full nonlinear equations of motion on the lattice. We confirm that parametric resonance is effective in transferring energy from the inflaton to a scalar field as long as the self-interactions of the second field are very small. However, in the very broad re... | In this paper, we consider the density-dependent incompressible Navier–Stokes equations in with linearly growing initial velocity at infinity. We obtain a blow-up criterion and global well-posedness of the two-dimensional system. It generalized the local well-posedness results due to the recent work by the first and th... | eng_Latn | 51,750 |
Curvature estimates for immersed hypersurfaces in Riemannian manifolds | We establish mean curvature estimate for immersed hypersurface with nonnegative extrinsic scalar curvature in Riemannian manifold $(N^{n+1}, \bar g)$ through regularity study of a degenerate fully nonlinear curvature equation in general Riemannian manifold. The estimate has a direct consequence for the Weyl isometric e... | Abstract In this note, we obtain some results for the Riccati differential equations u′=A(z)+u2 with nonentire meromorphic functions A(z). Some examples are given to illustrate our some results are sharp. | eng_Latn | 51,754 |
TUW-92-04 UWThPh-1992-17 Novel Symmetry of Non-Einsteinian Gravity in Two Dimensions | The integrability of R2‐gravity with torsion in two dimensions is traced to an ultralocal dynamical symmetry of constraints and momenta in Hamiltonian phase space. It may be interpreted as a quadratically deformed iso(2,1)‐algebra with the deformation consisting of the Casimir operators of the undeformed algebra. The l... | Abstract In this work, we study the analyticity of Kuramoto–Sivashinsky type equations and related systems by exploring the applicability of the semigroup method, which was developed in Collet et al. [5] . We establish the analyticity, with respect to the spatial variable in a strip around the real axis, for a variety ... | yue_Hant | 51,766 |
Laser Shock Adhesion Test (LASAT) of composite materials for aerospace industry | A study of composite material damage induced by laser shock waves | Three-dimensional finite element analysis of double-lap composite adhesive bonded joint using submodeling approach | eng_Latn | 51,894 |
Design Of Partially Prestressed Concrete Beam-Column Connection With Singly PrestressedSections Under Cyclic Loadings | Prestressed Concrete framed structure are commonly designed to provide presstressing steel to resist gravity loads. Therefore most of the prestressing tendons are located at the top of the beam at beam-column connections. Experimental and numerical non-linear finite element studies developed by the author show that the... | The paper introducess the implemented conditions which colling recycle of flexible base on Ying-DaLine.It over all xpounds the investigation of road condlitions of original pavement,indoor trial study,determination of trial lot plan as well as completion of trial lot etc. | eng_Latn | 51,942 |
An attempt to explain strength increase due to high loading rates | Abstract Most materials such as steel, concrete, ceramics, polymers, etc. show an increase of strength due to high loading rates. A number of mathematical equations are available to describe this behaviour. Nevertheless the physical reasons for these observations are still unknown. The common behaviour of a number of m... | A study of the factors which affect the fold kinematic activities has been presented,through the design analysis,the sensitivity of acceleration vs.design was obtained.According to the sensitivity,the lengths of linkage and crank were determined as design variables.The optimization technique was applied to an ADAMS Mod... | eng_Latn | 51,946 |
Design for missile test system based on VI | A large amount of data acquisition,storage and analysis should be carried out during the research for some type of missile.Constructing a test system consisting of VI can greatly simplify the design,reduce the volume and weight,shorten the research interval and acquire a good flexibility.This paper introduces a general... | Abstract: Road profile and the technical condition of the suspension affect a large measure of comfort, road safety and endurance. This paper contains the theoretical study results of the offroad vehicle vibration when running on a bumpy section of road. For this purpose has been developed mechanical model of tire-susp... | eng_Latn | 51,959 |
A novel timber dowel-type connection using shape memory alloy | In order to provide self-centering effect, a novel timber dowel-type connection system using superelastic shape memory alloy (SMA) bar and tubes as dowels is investigated in this study. Double-shear connections with SMA and mild steel dowels were tested under dynamic loadings at different displacement levels. The resul... | The article discusses the question of development of software for automated design of road wooden bridge spans. The adaptive pattern of elastic load distribution calculation based on obtained loading theorem providing optimal geometry elements choice is developed. It is given a comparison of the measured real spans def... | eng_Latn | 51,966 |
The durability of reinforced concrete bridge | This paper introduces the actual provision about road bridge criterion controling durability,and some new methods to improve reinforced concrete bridge durability. | The paper introducess the implemented conditions which colling recycle of flexible base on Ying-DaLine.It over all xpounds the investigation of road condlitions of original pavement,indoor trial study,determination of trial lot plan as well as completion of trial lot etc. | eng_Latn | 51,967 |
Bursting problem of filament wound composite pressure vessels | Using the nonlinear finite element method, we have calculated the stresses and the bursting pressure of filament wound solid-rocket motor cases which are a kind of composite pressure vessel. Maximum stress failure criteria and a stiffness-degradation model were introduced to the failure analysis. The effects of materia... | Introduction ::: The purpose of this study is to compare the tissue incorporation of a novel fenestrated and non-fenestrated crosslinked porcine dermal matrix (CPDM) (CollaMend™, Davol Inc., Warwick, RI) in a porcine model of ventral hernia repair. | eng_Latn | 51,973 |
Effects of lesions of thalamic intralaminar and midline nuclei and internal medullary lamina on spatial memory and object discrimination. | Male Sprague-Dawley rats received either radiofrequency lesions of the lateral internal medullary lamina (IML) or ibotenic acid lesions of the lateral intralaminar nuclei (ILN) and midline nuclei (MLN) or sham treatment. Neither lesion group was impaired in the retention of 3 object pair discriminations acquired before... | Most currently available material models for composites do not allow for permanent strain. For applications such as ballistic containment and energy absorption applications, this results in under predicting material performance. This study extends the Matzenmiller, Lubliner and Taylor (MLT) model, a continuum damage me... | eng_Latn | 51,978 |
On the role of strain and stress state in ductile failure | Abstract U sing plane strain and axisymmetric notched tensile specimens in combination with finite deformation stress analysis, the strain to initiate failure in a range of structural steels is shown to be co-related by the state of stress for both axisymmetric and plane states of strain. The implications of this resul... | In the light of the situation that there are no provisions about fatigue load in the highway bridge design codes and specifications in China for the time being,this paper conducts a study of the determination method and principle of fatigue test load for the cable and girder anchorage structure of highway steel cable-s... | eng_Latn | 51,981 |
A coupled analysis of mechanical behaviour and ageing for polymer-matrix composites | The use of organic-matrix composites for long lifetime aeronautics applications leads to a study of the coupling effects between thermo-mechanical stresses and thermal ageing. Taking into account the effects of oxidation in a behaviour law requires first, an understanding of every mechanism of degradation and the inter... | A robust algorithm for computing reduced-order models of parametric systems is proposed. Theoretical considerations suggest that our algorithm is more robust than previous algorithms based on explicit multi-moment matching. Moreover, numerical simulation results show that the proposed algorithm yields more accurate app... | eng_Latn | 51,985 |
Experimental Characterization of Mechanical Behavior of Cord‐Rubber Composites | Abstract Unidirectional cord‐rubber specimens in the form of tensile coupons and sandwich beams were used. Using specimens with the cords oriented at 0°, 45°, and 90° to the loading direction and appropriate data reduction, we were able to obtain complete characterization for the in‐plane stress‐strain response of sing... | The paper introducess the implemented conditions which colling recycle of flexible base on Ying-DaLine.It over all xpounds the investigation of road condlitions of original pavement,indoor trial study,determination of trial lot plan as well as completion of trial lot etc. | eng_Latn | 51,987 |
Nanotribology: Nonlinear Mechanisms of Friction | Friction with its related nonlinear dynamics is a vast interdisciplinary field, involving complex physical processes over a wide range of length and time scales. The accelerated progress in experimental and computational techniques, often leading to complex detailed dynamical patterns, has vigorously stimulated the sea... | Due to economic growth, the number of cars has grown rapidly and consequently traffic accidents have grown in direct ratio. This reminds us that braking device of a vehicle is an important factor to prevent traffic accidents. Aim these researches to speed and lighten the braking system of vehicles, to lengthen its dura... | eng_Latn | 51,994 |
BEHAVIOR OF BENDING AFTER LOW VELOCITY IMPACT AND QUASI-STATIC TRANSVERSE INDENTATION OF COMPOSITE HONEYCOMB CORE SANDWICH PANELS | Pure bending tests after low velocity impact and quasi static transverse indentation tests were carried out on composite Nomex honeycomb core sandwich panels. Methods of X ray, deply and visual inspection were used to measure the damage in specimens. Bending failure behavior was studied on the sandwich panels, in which... | The paper introducess the implemented conditions which colling recycle of flexible base on Ying-DaLine.It over all xpounds the investigation of road condlitions of original pavement,indoor trial study,determination of trial lot plan as well as completion of trial lot etc. | yue_Hant | 51,996 |
[The diagnosis of mild closed craniocerebral injury in patients with chronic illnesses]. | Of 396 injured persons aged from 16 to 80 years, examined in an acute period of mild craniocerebral trauma (MCCT), 174 were healthy before the trauma moment (1st group), 112 had the arterial hypertension, chronic blood circulation of brain insufficiency (CBCBI) of I-II stages (2nd group), and 110-chronic gastrointestin... | This paper presents a comprehensive work to evaluate the long-term influence of concrete on the shear-lag effect in steel–concrete composite beams, for which rather few tests and numerical studies have been reported. The FE study demonstrates that the effective width is greatly influenced by the analytic models: linear... | eng_Latn | 52,000 |
The Wooden Roofs of Leonardo and New Structural Research | The two types of spatial patterns reproduced in the Codex Altanticus fol. 899v can be deciphered in light of recent studies on reciprocal and tensegrity frames. For the construction of his wooden component roofs, Leonardo utilized two main modules: a grid of square modules and a grid of a tri/hexagonal module. Leonardo... | This work was aimed at understanding mechanisms of importance for the design of weight-efficient armour against long-rod projectiles (LRP) and shaped charge (SC) warheads. The focus was on how to a ... | eng_Latn | 52,007 |
Cause and Prevention of Abnormal Cracks in Reinforced Concrete Bridges | In construction of reinforced concrete bridges,abnormal cracks are composed of the following cracks such as temperature cracks,contraction cracks,deformation cracks,rusty cracks,freezing and expanding cracks,material cracks,and construction cracks.Under different circumstances,some measures should be adopted in order t... | Abstract This study aims at the formulations of double-layer clad sheet compression forming based on the upper bound and the slab methods. Assuming the frictions between the upper and lower dies and the clad sheet are constant shear friction, which can be different. Making use of the upper bound method can get the shap... | eng_Latn | 52,016 |
Headache (chronic tension-type) | Similar results for adverse effects have also been found in other studies for amitriptyline. | In the light of the situation that there are no provisions about fatigue load in the highway bridge design codes and specifications in China for the time being,this paper conducts a study of the determination method and principle of fatigue test load for the cable and girder anchorage structure of highway steel cable-s... | pol_Latn | 52,024 |
ESWL for Large-Span Roof Based on Grouping Response Method | The method for equivalent static wind loads applicable to multi-responses is proposed in this paper. A modified load-response-correlation (LRC) method corresponding to a particular peak response is presented, and the similarity algorithm implemented to the group response is described. The main idea of the algorithm is ... | The University of Minnesota engaged RRM Architects, with RRM's consultant, Earl ::: Walls Associates, to assist the Ad-Hoc Committee for Preplanning Analysis of ::: Academic Sciences. The results of that study comprise this report. | eng_Latn | 52,025 |
Durability of reinforced concretes under the combined action of carbonation and chloride ingress: Probabilistic analysis | This paper presents a comprehensive probabilistic model of reinforcement corrosion initiation under the combned action of carbonation and chloride ingress. The numerical results show that the probability of reinforcement corrosion initiation under the combined action is much higher than the case of only considering the... | The paper introducess the implemented conditions which colling recycle of flexible base on Ying-DaLine.It over all xpounds the investigation of road condlitions of original pavement,indoor trial study,determination of trial lot plan as well as completion of trial lot etc. | eng_Latn | 52,030 |
EDGE RESTRAINT ROLLING OF DIFFICULT-TO-WORK MATERIALS. | Abstract : The feasibility of applying the technique of edge restraint rolling to the production of difficult-to-form aerospace materials was demonstrated Ti-6Al-4V was rolled above, near, and below the beta transus (1900, 1780, and 1650F). Edge cracking was completely eliminated when rolling with restraint and with a ... | The paper introducess the implemented conditions which colling recycle of flexible base on Ying-DaLine.It over all xpounds the investigation of road condlitions of original pavement,indoor trial study,determination of trial lot plan as well as completion of trial lot etc. | yue_Hant | 52,032 |
Quantitative analysis of freeze-thaw durability of concrete | It describes the concrete freeze-thaw damage mechanism and process of freeze-thaw damage;according to the experimental results of concrete freeze-thaw cycle,analyzes concrete compressive strength、splitting tensile strength and flexural strength with the variation of the number of freezing and thawing,and established th... | The paper introducess the implemented conditions which colling recycle of flexible base on Ying-DaLine.It over all xpounds the investigation of road condlitions of original pavement,indoor trial study,determination of trial lot plan as well as completion of trial lot etc. | eng_Latn | 52,033 |
Economic feasibility analyses of bridge aseismic strengthening | The negative influence of bridge damage on the transportation system under earthquake is discussed in this paper. The relative direct and indirect loss of the damaged system is researched. Based on the constitution of user cost, the unit user cost is assessed through building traffic demand and distribution model. Comp... | Recently, Advancements in information technology increasingly compact, lightweight, easy to pursuing the needs of users as (Needs) to meet the complex application of various types of products have been released. In this study, Numerical analysis of stress distribution and to optimize the location of the inserted device... | eng_Latn | 52,034 |
Optimisation of a vehicle energy absorbing steel component with experimental validation | Abstract The paper deals with the optimisation of a tapered tubular steel component to be used as an energy-absorbing device in the front structure of a vehicle body. Aim of the optimisation problem is the minimisation of a load uniformity parameter evaluated as the ratio between the maximum and the average crushing lo... | In this paper,according to the theories of whole life appraisal,value engineering and environmental economics,and based on the Evaluation Standards for Green Building(GB/T 50378-2006) and Management Methods for Performance Evaluation on Commercial Residential Buildings,an economic performance evaluation system was esta... | eng_Latn | 52,042 |
Implementing inherently safer design in an existing plant | Although the best time for implementation of inherently safer design alternatives is during early process development and plant design, there are often opportunities to modify an existing plant to significantly enhance inherent safety. We will describe a modification to a bromine raw material handling facility, replaci... | A study of the factors which affect the fold kinematic activities has been presented,through the design analysis,the sensitivity of acceleration vs.design was obtained.According to the sensitivity,the lengths of linkage and crank were determined as design variables.The optimization technique was applied to an ADAMS Mod... | eng_Latn | 52,057 |
I've been studying the Cox Proportional Hazards model, and this question is glossed over in most texts. Cox proposed fitting the coefficients of the Hazard function using a partial likelihood method, but why not just fit the coefficients of a parametric Survival function using the maximum likelihood method and a linea... | I've been studying the Cox Proportional Hazards model, and this question is glossed over in most texts. Cox proposed fitting the coefficients of the Hazard function using a partial likelihood method, but why not just fit the coefficients of a parametric Survival function using the maximum likelihood method and a li... | I've been studying the Cox Proportional Hazards model, and this question is glossed over in most texts. Cox proposed fitting the coefficients of the Hazard function using a partial likelihood method, but why not just fit the coefficients of a parametric Survival function using the maximum likelihood method and a li... | eng_Latn | 52,059 |
The hypothesis that superheavy particles as particles of cold dark matter decay in our Galaxy and are observed today as ultra-high energy cosmic rays is discussed. These particles were created from vacuum by the gravitational field of the inflaton field in the Grand Unification era. Supposing that they have some quantu... | We consider the possibility of the quantum vacuum states in f(R,T) gravity. Particularly, we study the Bogoliubov transformations associated to different vacuum states for some f(R,T) models. The m... | 1and that these are possible sources of energies up to 100 PeV, above which extragalactic sources are believed to dominate. Even if only 10% of the supernova explosion energy (10 51 erg) goes into cosmic rays, they are energetically capable of delivering the requisite cosmic ray power of 10 42 erg/s into the interstell... | eng_Latn | 52,098 |
The F-GAMMA program: Multi-frequency study of Active Galactic Nuclei in the Fermi era. Program description and the first 2.5 years of monitoring | High-Sensitivity AGN Polarimetry at Sub-Millimeter Wavelengths | Corrected FIM effectiveness as an index independent of FIM score on admission | eng_Latn | 52,110 |
Application study of a correction method for a spacecraft thermal model with a Monte-Carlo hybrid algorithm | The correction of a thermal model for a thermally controlled satellite in ground test conditions is studied using a Monte Carlo hybrid algorithm. First, the global and local parameters are summarized according to sensitivity analyses on uncertain parameters, and then the model correction is treated as a parameter optim... | In determining the distances to stars within the Milky Way galaxy, one often uses photometric or spectroscopic parallax. In these methods, the type of each individual star is determined, and the absolute magnitude of that star type is compared with the measured apparent magnitude to determine individual distances. In t... | eng_Latn | 52,181 |
Ages and kinematics of clusters | The recent emphasis on stellar evolution, especially as seen in star clusters, has given us — mainly through Sandage's synthesis of the available material — a good outline of the evolutionary process. Although work of a survey nature obviously must be continued, if only to turn up clusters with an age not represented a... | By using the AdS/CFT correspondence and Godel black hole background, we study the dynamics of heavy quark under a rotating plasma. In that case we follow Atmaja (2013) about Brownian motion in BTZ black hole. In this paper we receive some new results for the case of . In this case, we must redefine the angular velocity... | eng_Latn | 52,185 |
Equation for traveling-wave tubes | In Chapter VI we have expressed the properties of a circuit in terms of its normal modes of propagation rather than its physical dimensions. In this chapter we shall use this representation in justifying the circuit equation of Chapter II and in adding to it a term to take into account the local fields produced by a-c ... | We search for the variable component of themagnetic field in γ Equ by studying four Nd III lines with the Main Stellar Spectrograph of the 6-m BTA telescope of the Special Astrophysical Observatory via accumulation and cyclic transfer of the electronic image of the Zeeman spectrum on the CCD. The single exposure time w... | eng_Latn | 52,204 |
Microstructure Evolution of Semi-Solid AZ91D Alloy During Isothermal Heat Treatment Process | The effect of isothermal heat treatment on the microstructure evolution of semi- solid AZ91 D magnesium alloy was investigated. The results show that the roundness of the primary α- Mg phase increases with the increasing temperature and time. The microstructure evolution of the semi-solid AZ91 D experiences three stage... | We present an asymptotic form of the Boussinesq equations in the limit of small P ´ eclet numbers i.e. when the time scale of motions is much larger than the time scale of ther- mal diffusion. We find that, in this limit, the effects of thermal diffusion and stable stratification combine in a single physical process. T... | eng_Latn | 52,205 |
Monte Carlo simulations of geosynchrotron radio emission from CORSIKA-simulated air showers | Simulations of radio emission from extensive air showers we have published so far were performed with a Monte Carlo code using analytical parametrisations to describe the spatial, temporal, energy and angular particle distributions in the air shower. A new version of our simulation code, which replaces these parametris... | Abstract According to the method described in reference [1], we have designed a series of corrector systems for Cassegrain telescopes automatically with an electronic computer. The calculations were carried out under the following two conditions: the primary and secondary mirrors have strictly conical surfaces, and the... | eng_Latn | 52,206 |
uvby - β photoelectric photometry of Cepheid stars | We present time-series uvby − β photometry of 41 classical Cepheid stars. A brief discussion of a comparison between the present data and previous photometric observations is included. | A method of solving the eikonal equation, in either flat or curved space–times, with arbitrary Cauchy data, is extended to the case of data given on a characteristic surface. We find a beautiful relationship between the Cauchy and characteristic data for the same solution, namely they are related by a Legendre transfor... | eng_Latn | 52,208 |
Lawrence Berkeley National Lab is studying the universe through the brightness of these "super" explosions | Distant Exploding Stars Foretell Fate Of The Universe: It Will Expand ... Jan 13, 1998 ... By the time the light of the most distant supernova explosions so far discovered ... Although not all Type Ia supernova have the same brightness, their ... are supernovae and measure their redshifts using the Keck telescope, the... | jeopardy/1052_Qs.txt at master jedoublen/jeopardy GitHub With the rising sun beating down on me I was doing this, as if I was a ... I went on a diet to try to do this, like chateaubriand sauce when it's boiled down | reduce. | eng_Latn | 52,254 |
Micro/nano patterning characteristics in hot embossing process | The hot embossing process has been known as one of major nano replication techniques. This is due to its simple process, low cost, high replication fidelity and relatively high throughput. As the initial step of quantitating the hot embossing process, simple parametric studies for the embossing time have been carried o... | We present an asymptotic form of the Boussinesq equations in the limit of small P ´ eclet numbers i.e. when the time scale of motions is much larger than the time scale of ther- mal diffusion. We find that, in this limit, the effects of thermal diffusion and stable stratification combine in a single physical process. T... | eng_Latn | 52,269 |
Determination of point wave sources by boundary measurements | This paper is concerned with an inverse point wave sources problem in a bounded domain Ω⊂3 from boundary observations. Assuming that all point sources vanish after a certain time T1, we prove first an identifiability result provided that some condition is satisfied between the time T1, the observation interval (0,T) an... | Bolometers operating at low temperature are discussed as detectors of heavy particles which have been recently considered as constituents of Cosmic Dark Matter. The study of the heat leak in a cascade refrigerator operating underground is suggested for the indirect detection of Weak Interacting Massive Particles. | eng_Latn | 52,272 |
Westerlund 1 as a Template for Massive Star Evolution | With a dynamical mass Mdyn ~ 1.3×105 M and a lower limit Mcl > 5 × 104 M from star counts, Westerlund 1 is the most massive young open cluster known in the Galaxy and thus the perfect laboratory to study massive star evolution. We have developed a comprehensive spectral classification scheme for supergiants based on fe... | Highly branched stilbene dendrimers underwent trans–cis isomerization in the excited singlet state within the lifetime of 10 ns. | eng_Latn | 52,300 |
MODIFICATION OF HIGH ENERGY γ-RAY SPECTRUM OF BLAZARS DUE TO INTERNAL AND INTERGALACTIC ABSORPTION | Blazars are effective emitters of γ-rays with spectra extending to GeV and TeV energies. In the case of distant TeV blazars, γ-rays undergo severe absorption due to interactions with diffuse intergalactic radiation fields resulting in significant deformations of the initial (source) spectra. Even for the lowest possibl... | A simplified treatment is proposed to study quantitatively the lattice dynamics of CsK, CsRb, and RbK alloy systems. The volume effect on the lattice dynamics of the pure constituent is considered, and the phonon dispersion relations of the local and band modes are obtained forthe Rb0.71K0.29, Rb0.3K0.7, Cs0.7K0.3, Cs0... | yue_Hant | 52,301 |
Quasar candidates near A1139, A1775, and 1633+33 | Lists of quasar candidates discovered with blue, blue green, and and green grens plates are presented, along with a discussion of the surface densities of quasars and a comparison with the 3C 345 field. The plates covered the fields A1139, A1775, and 1663+33. A total of 74 new candidate quasars were detected, with surf... | The main objective of this article is to study dynamic of the ::: three-dimensional Boussinesq equations with the periodic boundary ::: condition.We prove that when the Rayleigh number $R$ crosses the ::: first critical Rayleigh number $R_c$, the Rayleigh-Benard problem ::: bifurcates from the basic state to an global ... | eng_Latn | 52,311 |
Assessment of Chromium Release from Steel Manufacturing Waste | Industrial waste of different origins has been dumped for decades (1950–1980) in a landfill of 150,000 m2 area, a few km from the centre of Torino (NW Italy). A large portion of this landfill, estimated to be in the order of 1,100,000 m3 and extending over a surface of 55,000 m2, is composed of steel manufacturing wast... | Iron emission is often a severe contaminant in optical-ultra- violet spectra of active galaxies. Its presence complicates emission line studies. A viable solution, already successfully applied at optical wave- lengths, is to use an empirical iron emission template. We have generated Fe ii and Fe iii templates for ultra... | eng_Latn | 52,314 |
Singular potentials in relativistic equations of motion | It is shown that in relativistic equations of motion for a particle moving in external potentials some additional forces of purely relativistic origin appear. These forces are repulsive for scalar and pseudoscalar potentials thus preventing the particle from coming too near to the singularity of the potential in spite ... | We search for the variable component of themagnetic field in γ Equ by studying four Nd III lines with the Main Stellar Spectrograph of the 6-m BTA telescope of the Special Astrophysical Observatory via accumulation and cyclic transfer of the electronic image of the Zeeman spectrum on the CCD. The single exposure time w... | eng_Latn | 52,345 |
Investigation of cosmic-ray muon induced processes by the MIREDO facility | The MIREDO (Muon Induced Rare Event Dynamic Observatory) spectrometer system is primarily developed for the study of cosmic muon induced processes in different materials. Exploration of such interactions can be important for ultra-low background experiments. The system is based on the 100% relative efficiency ultra-low... | Abstract A crystal field (CF) of axial symmetry is incorporated in the resonance model of Schotte and Schotte for magnetic multiplets of angular momentum j . The free energy for j = 5 2 and arbitrary level schemes is explicity evaluated and the competition between CF-splitting and Kondo effect in the susceptibility ten... | eng_Latn | 52,362 |
Astronomy: Supernovae Offer a First Glimpse of the Universe's Fate | By studying Type Ia supernovae, exploding stars visible at distances so vast that they represent earlier epochs of cosmic history, astronomers are getting a look at the ultimate fate of the universe. By comparing the brightness of these beacons--an indicator of their distance--with the rate at which cosmic expansion is... | AbstractThis article considers the understandings of space and place amongst a group of disaffected students within an institution that had been in a state of flux over a number of years. The artic... | eng_Latn | 52,368 |
Finding of new species of finless Sagittids (Sagittidae: Chaetognatha) in the northwestern Sea of Japan | Diagnosis of a new genus Abosagitta gen. n. and detailed descriptions and drawings of four new species, as well as keys for the identification of genera of Sagittidae, are given. The new species differ from species of other genera of Sagittidae by lacking lateral fins on the trunk. Instead of two pairs of lateral fins,... | Abstract We propose a mission called SADE, the Starspot And Dynamo Explorer, to study dynamo activity in nearby late-type stars. The onboard instruments will be a Ca-K telescope for magnetically dominated chromospheric emission, and an X-ray grazing incidence telescope to study coronal emission. We design the mission f... | eng_Latn | 52,374 |
Unlike previous long-term analyses, this study found some associations between mortality and ozone but found inconsistent results for PM indicators. | Inconsistent results were found for PM indicators in this study. | The study confirmed all of the findings presented in previous studies. | eng_Latn | 52,429 |
This will include a vigorous research program to further understand the fate and transport of pollutants in the atmosphere. | The ultimate fate and transport of pollutants will be further understood following a vigorous research program. | There are not pollutants to study in the atmosphere. | eng_Latn | 52,431 |
More progress urged on ozone hole | One of the scientists who found the Antarctic ozone hole urges more action on ozone-attacking chemicals. | Plans to protect Britain do not heed the risk of rising river levels caused by global warming, finds study. | eng_Latn | 52,459 |
what is the purpose of the atmosphere | Written by Marcia Malory. Category: Atmosphere. The atmosphere, a thin shell of gases surrounding the Earth, is a very effective protective shield that reflects and absorbs harmful radiation and objects like meteorites.The atmosphere protects the Earth from receiving too much radiation from the Sun.ritten by Marcia Mal... | Overview. 1 Atmosphere - The atmosphere is the air around the Earth made up of different gasses (mostly nitrogen and oxygen). The atmosphere forms a protective layer around Earth, keeping the planet warm and protecting it from the Sun's radiation. The study of the atmosphere is called meteorology and includes the weat... | eng_Latn | 52,557 |
which molecules in the atmosphere absorb infrared radiation? | The only way to study the entire range of infrared (as well as gamma rays, xrays, UV) is to place telescopes in space well above the atmosphere. Only some (not all) of the IR radiation between 1 and 40 microns makes it to the Earth's surface. The rest is absorbed by our atmosphere primarily by water vapor. IR is also a... | Water vapor and certain gases in the atmosphere absorb infrared radiation, causing what is called the Greenhouse Effect. This infrared radiation comes from materials on the Earth's surface that have been heated by sunlight. | eng_Latn | 52,563 |
what generator uses del ozone chip | DEL Ozone Generators produce ozone gas which is introduced to the spa water through suction created by the spa. Tubing is used to connect the Ozone Generator to an injector or a vacuum port provided by the spa manufacturer. The injector or port are vacuum sources used to pull the ozone gas out of the Ozone Generator an... | There are a number of studies that have been performed to evaluate ozone output from air purifiers. In one study conducted by the U.S. Environmental Protection Agency (EPA), researchers ran an ozone generator in a test home at its maximum setting. | eng_Latn | 52,565 |
A study on numerical optimization and performance verification of multiphase pump for offshore plant | Performance Analysis of a Low-Pressure Three-Stage Axial Compressor | Backstepping control of the Stefan problem with flowing liquid | eng_Latn | 52,599 |
The term cluster or streamer is commonly applied to a collection of particles held together by hydrodynamic forces. Inside a circulating fluidized bed a single cluster has a significant effect on the gas that flows around it. Recent experiments have suggested that large scale gas fluctuations occur as the air flows aro... | In this study, the mass transfer of three-dimensional nonreactive gas-solid fluidized bed was investigated computationally. The influence of the inlet gas velocity and temperature on mass transfer of air to wet particles was analyzed. The simulation results indicated that the mass transfer coefficients of air to spheri... | We prove that groups acting geometrically on delta-quasiconvex spaces contain no essential Baumslag-Solitar quotients as subgroups. This implies that they are translation discrete, meaning that the translation numbers of their nontorsion elements are bounded away from zero. | eng_Latn | 52,645 |
An experimental study of the pressure and heat-transfer distribution on a 70 deg sweep slab delta wing in hypersonic flow | Experimentally determined local flow properties and drag coefficients for a family of blunt bodies at Mach numbers from 2.49 to 4.63 | Stream hydraulics as a major determinant of benthic invertebrate zonation patterns | eng_Latn | 52,660 |
Regimes of two-phase flow in micro- and minichannels (review) | Hydrodynamic study of a monolith-type reactor for intensification of gas-liquid applications | Completely Stale Transmitter Channel State Information is Still Very Useful | eng_Latn | 52,679 |
The study of random vibration deals with random excitation processes and the response of vibratory systems to such excitations. The most frequent application is to vehicles (e.g., ships, trucks, airplanes, space vehicles) where the operational environment provides random dynamic excitation (e.g., stormy seas, rough roa... | The various techniques available for the analysis of nonlinear systems subjected to random excitations are briefly introduced and an overview of the progress which has been made in this area of research is presented. The discussion is mainly focused on the basis, scope and limitations of the solution techniques and not... | The application of dynamic mesh method has been extensively applied for simulating piston wind-induced subway environments, e.g. air quality, which is not central processing unit-friendly in calcul... | eng_Latn | 52,717 |
The study is focused on developing and testing a 2-D microscale mathematical model and a numerical method for the analysis of turbulent flow and passive gaseous admixture transfer in street canyons. The model was tested by modeling laminar flow in the initial section of a 2-D channel and eddy flow in a channel with sud... | A numerical microscale model of aerodynamics and the transport of pollution was developed. The model takes into account the nonhomogeneity of elements of the urban boundary layer. The numerical solution of the differential problem is based on the finite volume method. On the basis of experiments, a comparison of three ... | Berzelius failed to make use of Faraday's electrochemical laws in his laborious determination of equivalent weights. | eng_Latn | 52,766 |
This study reports an approach and presents its open-source implementation for quantitative analysis of experimental flows using streak images and convolutional neural networks (CNN). The latter are applied to retrieve a length and an angle from streaks, which can be used to deduce kinetic energy and directionality (up... | Introduction.- Physical and technical background.- Mathematical background of statistical PIV evaluation.- PIV recording techniques.- Image evaluation methods for PIV.- Post-processing of PIV data.- Three-component PIV measurements on planar domains.- Examples of applications.- Bibliography.- Matrices for perspective p... | Berzelius failed to make use of Faraday's electrochemical laws in his laborious determination of equivalent weights. | eng_Latn | 52,784 |
The present light sheet system for 3D studies of the location and structure of transonic flows employs a CCD video camera and digital frame-store which are synchronized with the pulsed laser so that the resulting images can be immediately displayed via microcomputer. These video images are digitally enhanced in order t... | Holographic interferometry has been used in a large scale transonic wind tunnel to produce a 3D flow visualization. The experiments have been carried out on a model civil transport aircraft wing and turbine powered engine simulator combination. This study is significant industrially as the method forms a diagnostic for... | Berzelius failed to make use of Faraday's electrochemical laws in his laborious determination of equivalent weights. | eng_Latn | 52,790 |
A numerical analysis of vortex shedding within a confined channel flow | AbstractThe numerical analysis of two-dimensional laminar vortex shedding from a rectangular cylinder within a confined channel flow is presented. This study, carried out using a computational fluid dynamics (CFD) code based on the SIMPLEST algorithm, considers the influence of numerical diffusion on the prediction of ... | In this study, two apparently similar clays have been characterised using advanced rheometry and particle-sizing techniques; the data and the blend design consequences are discussed. The analytical information has been used in the design of casting slips which have been characterised by both traditional and advanced me... | eng_Latn | 52,815 |
Optimization and metabolic stabilization of a class of nonsteroidal glucocorticoid modulators. | Abstract The optimization of a series of nonsteroidal glucocorticoid modulators is reported. Potent selective GR ligands that have improved metabolic stability were discovered typified by the subnanomolar acid 12 (GR binding IC 50 = 0.6 nM). | A computational study on the supersonic flow around the lateral jet controlled missile has been performed. For this purpose a three dimensional Navier-Stokes computer code(AADL3D) has been developed and case studies have been performed by comparing the normal force coefficient and the moment coefficient of a missile bo... | eng_Latn | 52,827 |
Motion of particles of magnetosensitive aerosol in a magnetic field | The results of an investigation of magnetosensitive aerosols prepared by atomizing magnetic fluids in a gas medium are presented. The possibility of controlling the motion of such media by using magnetic fields was shown. | A computational study on the supersonic flow around the lateral jet controlled missile has been performed. For this purpose a three dimensional Navier-Stokes computer code(AADL3D) has been developed and case studies have been performed by comparing the normal force coefficient and the moment coefficient of a missile bo... | eng_Latn | 52,829 |
The Study of the Similarity Theory of the Debris Flow Model Experiment | The goal of this paper is to establish an experimental theory of the debris flow model as the foundation for future flow model construction through the characteristics of debris flow's basic movement: flow motion similarity and sediment motion similarity. The study yields 10 similarity rules in the debris flow model, w... | This paper discussed the time field information fusion technique based on the Dampster Shafter method. A new wear mode recognition method of marine diesel engine is put forward. This new method can decrease the uncertainty on the recognition. A wear mode recognition expert system is built and the reliability of recogni... | eng_Latn | 52,830 |
Experience of Nurbas Modeling Design Process | Nurbas curve modeling is one of a very important function of three-dimensional software, it provides another excellent way of modeling for three-dimensional object shape by its unique model features, which fully demonstrates functional advantages of its three-dimensional forming from the line to a surface, is a functio... | Abstract Buoyancy-driven recirculating flows between two parallel plates, whose temperature varies sinusoidally, have been attentively investigated. In this study, we place our emphasis on joint effects rendered by both (a) the existence of two insulated side walls and (b) the phase of the bottom-surface sinusoidal tem... | eng_Latn | 52,850 |
Modeling with Fault Integration of the Cooling and the Lubricating Systems in Marine Diesel Engine: Experimental validation | Abstract In this paper, physical models for the cooling and the lubricating systems for marine diesel engine have been developed. The main purpose of this modeling is to integrate some possible faults that may be produced, and then to analyze their effects on the overall marine diesel engine during operation. Faults ma... | In this paper we study the dynamics of the Kepler-36 exoplanetary system. The two planets are engaged in the mean-motion resonance of 6:7. The dynamical stability of this system has been studied by numerical methods using a Lie-integrator and calculating the Lyapunov characteristic indicator (LCI) and maximum eccentric... | eng_Latn | 52,864 |
A Class of Nonlinear Degenerate Integrodifferential Control Systems | In this paper, we study the approximate controllability and noncontrollability for a class of nonlinear degenerate integrodifferential control systems. Based on the property of finite propagation for the disturbances, we prove noncontrollability. We also establish sufficient conditions for approximate controllability o... | Simulating a radial-inflow turboexpander from its nozzle inlet to the impeller output as the single nozzle, and through theoretic analysis, this thesis concludes two general characteristic models for design and off-design steady-state of the turboexpanders. Based on experiment data, and generalized least squares method... | eng_Latn | 52,868 |
Experimental study of hydrodynamic and heat-transfer processes in the downward motion of a two-phase flow under annular and dispersed-annular conditions | Relationships are derived for determining the average thickness of a liquid film and the predominant frequency of the wave motion on its surface under conditions of two-phase flow; relationships are also derived for calculating the hydraulic resistance and the rate of heat transfer to the film under these conditions. | We present a novel numerical method based on finite differences to solve the problem of impurities' migration from a hollow core multilayer cylinder filled with a known liquid medium. We expose the numerical method and the developed application. The validation is performed by calculating the migration in a configuratio... | eng_Latn | 52,886 |
UNSTEADY SIMULATION OF TURBULENT FLOW AND HEAT TRANSFER IN A CHANNEL WITH PERIODIC ARRAY OF CUBIC PIN‐FINS | Numerical study of turbulent heat and fluid flow in a straight square duct at higher Reynolds numbers | FULLY DEVELOPED TURBULENT PIPE FLOW | yue_Hant | 52,893 |
Allelopathic effects of exogenous phenolic acids composted by wheat straw on seed germination and seedling growth of rice | This experiment aimed to investigate allelopathic effects of phenolic acids composted by wheat straw at different concentrations on seed germination and seedling growth of rice by means of plate culture and sand culture.The results showed that the seed germination indexes in all phenolic acids treatments were promoted ... | Flexible wing surfaces can be observed in many natural flyers and their use in small engineered flying vehicles has translated too many beneficial properties. These benefits have manifested themselves in the aerodynamic forces as well as flight stability which are an effect of how the flow and the membranes interact bo... | eng_Latn | 52,900 |
Effect of Pulsations on the Wake Structure of a Circular Cylinder | The effect of flow perturbations (sinusoidal pulsations) on the wake structure of a circular cylinder in turbulent crossflow has been studied by means of LDA measurements along the wake axis. The results show the variation of the extent of the recirculation bubble and vortex formation regions and the longitudinal dista... | The purpose of this note is to document some work done as part of the effort directed at designing and simulating a bunch-by-bunch feedback system to control longitudinal coupled bunch instabilities in the B-factory. In particular, I discuss the ring model used in the simulation program developed to study this feedback... | eng_Latn | 52,903 |
STATISTICAL TREATMENT OF HOT CHANNEL FACTORS FOR COMPACT REACTORS | The theoretical development, statistical treatment, and application of hot channel factors in compact SNAP reactors as represented by the SNAP 8 experimental core loading are presented. The channel and rod power effects of variation in the concentrations of uranium, hydrogen, and poison in the fuel rods are given. The ... | In this paper, by using the coefficient mapping from plant to GPC closed-loop system in the IMC structure, the stability conditions for closed-loop system with respect to selection of tuning parameters are derived. Furthermore, some simple conditions described by step response coefficients for tuning parameters which g... | kor_Hang | 52,910 |
Numerical Simulation of 3-D Flow Field in the Sand Funnel | The computation region of the sand funnel is treated by special means so that some reasonable boundary conditions can be adopted.Volume of Fluid(VOF) method is introduced to trace free-surface.The RNG model is used for turbulence modeling,all of which is combined.The 3-D water-air two-phase flow field in the sand funne... | In this paper, the results of a series of elastoplastic large deflection analyses on a specific cylindrical shell part of the ship hull girders under inplane compression is reported. Nonlinear finite element method is applied in the calculations. It is revealed that the assumption of elastic-perfectly plastic behaviour... | eng_Latn | 52,923 |
Observation and Numerical Simulation of Heterogenous Underlying Surface Boundary Layer (II): Numerical Simulation of Inverse Humidity Phenomenon | Bascd on the whole physical of inverse humidity given in literature, a new scheme of land-surface process parameterization is designed. The new scheme has successfully simulated appearing the inverse humidity phenomenon in desert near oasis. The simulated result is coincident with the observed ones, so that the new sch... | The first step of the /spl Hscr//sub /spl infin// loop shaping design procedure is to specify desired closed loop performance by shaping the singular values of the nominal plant with a pre- and/or a post-compensator. Designers usually choose diagonal weighting functions but it is not always possible to obtain the desir... | eng_Latn | 52,927 |
Finite Element Analysis of Seepage through an Earthen Dam by using Geo-Slope (SEEP/W) software | In this research work, finite element approach is employed to solve the governing differential equations pertaining to seepage through body of dam its foundation. For this purpose, the foremost focal point is discretization of domain into finite elements by placement of imaginary nodal points and discretization of gove... | This paper addresses an initial study of a modelfree PID tuning based on simultaneous perturbation stochastic approximation (SPSA) for liquid slosh control. The SPSA method is used to optimize the PID parameters such that the liquid slosh is minimized. In order to validate our model-free design, a liquid slosh model is... | eng_Latn | 52,928 |
Penalty finite-element analysis of coupled fluid flow and heat transfer for in-line bundle of cylinders in cross flow | Abstract The two-dimensional steady state Navier-Stokes equations and the energy equation governing laminar incompressible flow are solved using a penalty finite-element model for the case of flow across an in-line bundle of cylinders. Two cases of in-line cylinder bundles, one five rows deep and the other an infinite ... | A real case of a steel lattice shell suffering a fire was studied. Based on the theory of field modeling, fire dynamic simulator (FDS) was used to identify the temperature field. The damage mechanism of the structure was determined by FEM analysis. After damage assessment, the shell was repaired with the pipe-encasemen... | eng_Latn | 52,929 |
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