An economic assessment of STOL aircraft potential including terminal area environmental considerations, volume 1

The results of an economic and environmental study of short haul airline systems using short takeoff and landing (STOL) aircraft are presented. The STOL system characteristics were optimized for maximum patronage at a specified return on investment, while maintaining noise impact compatibility with the terminal area. Supporting studies of aircraft air pollution and hub airport congestion relief were also performed. The STOL concept specified for this study was an Augmentor Wing turbofan aircraft having a field length capability of 2,000 ft. and an effective perceived noise level of 95 EPNdB at 500 ft. sideline distance. An economic and environmental assessment of the defined STOL system and a summary of the methodology, STOL system characteristics and arena characteristics are provided

An economic assessment of STOL aircraft potential including terminal area environmental considerations. Volume 2: Appendices

An economic assessment of short takeoff aircraft for short haul air transportation applications is presented. The economic viability and environmental compatibility of short takeoff aircraft service in high density areas were evaluated. The subjects discussed are: (1) aircraft configurations and performance, (2) airfield and terminal requirements, and (3) direct and indirect operating costs

Disappointing model for ultrahigh-energy cosmic rays

Data of Pierre Auger Observatory show a proton-dominated chemical composition of ultrahigh-energy cosmic rays spectrum at (1 - 3) EeV and a steadily heavier composition with energy increasing. In order to explain this feature we assume that (1 - 3) EeV protons are extragalactic and derive their maximum acceleration energy, E_p^{max} \simeq 4 EeV, compatible with both the spectrum and the composition. We also assume the rigidity-dependent acceleration mechanism of heavier nuclei, E_A^{max} = Z x E_p^{max}. The proposed model has rather disappointing consequences: i) no pion photo-production on CMB photons in extragalactic space and hence ii) no high-energy cosmogenic neutrino fluxes; iii) no GZK-cutoff in the spectrum; iv) no correlation with nearby sources due to nuclei deflection in the galactic magnetic fields up to highest energies.Comment: 4 pages, 7 figures, the talk presented by A. Gazizov at NPA5 Conference, April 3-8, 2011, Eilat, Israe

Влияние межчастичного взаимодействия в ансамбле неподвижных суперпарамагнитных феррочастиц на cтатические, магнитные и термодинамические свойства системы

This paper presents a study of the effect of the interparticle dipole-dipole interaction on the static, thermodynamic, and magnetic properties of the ensemble of stationary superparamagnetic particles in the external magnetic field. The relaxation of the magnetic moment of the model ferroparticles occurred by the Néel mechanism. The directions of the easy axes of all particles were assumed to be parallel to each other, but at the angle to the direction of the external magnetic field. The direction of the easy axes was described using the polar and azimuth angles. The potential energy of the system includes a single-particle dipole-axial interaction, a single-particle dipole-field interaction and long-range interparticle dipole-dipole correlations. In the system, two variants of the distribution of ferroparticles over the volume of the container are considered: in the nodes of a simple cubic lattice and randomly. The described model is studied theoretically by expanding the Helmholtz free energy into a classical virial series up to the second virial coefficient. Using the new theory, the contribution of dipole-dipole interactions in the changes in the magnetic susceptibility, magnetization, and heat capacity of the system is estimated, and the results are represented graphically. Important information necessary to the development and synthesis of new magnetic materials with controlled properties is provided. © 2021 Tyumen Scientific Centre of Siberian. All right reserved.This work was supported by the Ministry of Science and Higher Education of the Russian Federation within the framework of the Ural Mathematical Center project No 075–02-2021-1387

Java-MaC A Run-time Assurance Tool for Java Programs

AbstractWe describe Java-MaC, a prototype implementation of the Monitoring and Checking (MaC) architecture for Java programs. The MaC architecture provides assurance about the correct execution of target programs at run-time. Monitoring and checking is performed based on a formal specification of system requirements. MaC bridges the gap between formal verification, which ensures the correctness of a design rather than an implementation, and testing, which only partially validates an implementation. Java-MaC provides a lightweight formal method solution as a viable complement to the current heavyweight formal methods. An important aspect of the architecture is the clear separation between monitoring implementation-dependent low-level behaviors and checking high-level behaviors against a formal requirements specification. Another salient feature is automatic instrumentation of executable codes. The paper presents an overview of the MaC architecture and a prototype implementation Java-MaC

Marvel Implementor's Guide

This document is an implementor's manual for the MARVEL software development environment. It discusses the technical details of the system, rather than providing a description of the system. It is intended for those people doing actual development work on MARVEL. References are provides throughout the manual for background information

Complex Action Support from Coincidences of Couplings

Our model \cite{ownmMPP}\cite{SIMPP} with complex action in a functional integral formulation with path integrals extending over all times, past and future, is reviewed. Several numerical relations between coupling constants are presented as supporting evidence. The new evidence is that some more unexplained coincidences are explained in our model: 1) The "scale problem" is solved because the Higgs field expectation value is predicted to be very small compared to say some fundamental scale, that might be the Planck scale. 2) The Higgs VEV need not, however, to be just zero, but rather is predicted to be so that the running top-Yukawa coupling just is about to be unity at this scale; in this way the (weak) scale easily becomes "exponentially small". Instead of the top-Yukawa we should rather say the highest flavour Yukawa coupling here. These predictions are only achieved by allowing the principle of minimization of the imaginary part of the action SI(history) to to a certain extent adjust some coupling constants in addition to the initial conditions. If Susy-partners are not found in LHC, it would strengthen the need for "solution" of the hierarchy or rather scale problem along the lines of the present article.Comment: only text. Some printing mistakes corrected and a couple of new subsections inserted and abstract stylistically changed a bi

Energy calibration of the fly's eye detector

The methods used to calibrate the Fly's eye detector to evaluate the energy of EAS are discussed. The energy of extensive air showers (EAS) as seen by the Fly's Eye detector are obtained from track length integrals of observed shower development curves. The energy of the parent cosmic ray primary is estimated by applying corrections to account for undetected energy in the muon, neutrino and hadronic channels. Absolute values for E depend upon the measurement of shower sizes N sub e(x). The following items are necessary to convert apparent optical brightness into intrinsical optical brightness: (1) an assessment of those factors responsible for light production by the relativistic electrons in an EAS and the transmission of light thru the atmosphere, (2) calibration of the optical detection system, and (3) a knowledge of the trajectory of the shower

Proton-air inelastic cross section at S(1/2) = 30 TeV

The distribution of the maxima of high energy cosmic ray induced extensive air showers in the atmosphere was measured as a function of atmospheric depth. From the exponential tail of this distribution, it was determined that the proton-air inelastic cross section at 30 TeV center-of-mass energy to be 540 + or - 40mb