2,963 research outputs found

    The influence of the environmental factors on the adoption of the International Accounting System IAS/IFRS : case of Iraq

    Get PDF
    Purpose: This research aims to study the impact of local environmental factors on the adoption of International Accounting system in Iraq. So the main objective of the research can be the evaluation of the role of local environmental factors in selecting the best method to adopt International Accounting Standards (IAS), and International Financial Reporting Standards (IFRS). Design/methodology/approach: The researchers prepared a questionnaire contains 28 paragraphs which were coded and divided into 7 parts showing the independent variables of the study (the environmental factors) and the dependent variable (the adoption of IAS/IFRS) Findings: The results of the research show that the local environment factors can effect on the choice of the country to adopt the best method of IAS/IFRS adoption, and the statistical analysis results show that there is a very good level of agreement for the participants about the effect of local environment factors on the adoption of IAS/IFRS. Practical implications: The research offers insights to the need to activate national standards and principles that are appropriate to the local environment in order to adapt with the requirements of IAS/IFRS adoption. Originality/value: The research presents significant pragmatic evidence in terms of its meticulous approach towards checking the robustness of results.peer-reviewe

    Role of the K1K_1 meson in K0K^0 photoproduction off the deuteron

    Full text link
    Neutral kaon photoproduction off the nucleon and deuteron has been reinvestigated by utilizing the new experimental data on both targets. An isobar model for elementary operator and impulse approximation for the reaction on the deuteron have been used. The available free parameters in the elementary model have been extracted from both elementary and deuteron data. In contrast to the elementary reaction, fitting the deuteron data requires an inclusion of weighting factor. The result indicates that the angular distribution of the elementary K0ΛK^0\Lambda process does not show backward peaking behavior.Comment: 4 pages, 4 figures, prepared for the Fifth Asia-Pacific Conference on Few-Body Problems in Physics 2011 (APFB2011), Seoul, Korea, August 22-26, 201

    Casimir-Polder intermolecular forces in minimal length theories

    Full text link
    Generalized uncertainty relations are known to provide a minimal length β\hbar\sqrt{\beta}. The effect of such minimal length in the Casimir-Polder interactions between neutral atoms (molecules) is studied. The first order correction term in the minimal uncertainty parameter is derived and found to describe an attractive potential scaling as r9r^{-9} as opposed to the well known r7r^{-7} long range retarded potential.Comment: 1 Figure. Version published by Physical Review D. Few references added, typos correcte

    Quark mass hierarchy in 3-3-1 models

    Full text link
    We study the mass spectrum of the quark sector in an special type I-like model with gauge symmetry SU(3)cSU(3)LU(1)XSU(3)_c \otimes SU(3)_L \otimes U(1)_X. By considering couplings with scalar triplets at large (TeV\sim TeV) and small (GeV\sim GeV) scales, we obtain specific zero-texture mass matrices for the quarks which predict three massless quarks (u,d,su,d,s) and three massive quarks (c,b,tc,b,t) at the electroweak scale (\sim GeV). Taking into account mixing couplings with three heavy quarks at large scales predicted by the model, the three massless quarks obtain masses at small order that depends on the inverse of the large scale. Thus, masses of the form mumd<msMeVm_u \lesssim m_d < m_s \sim MeV and mc,b,tGeV m_{c,b,t} \sim GeV can be obtained naturally from the gauge structure of the model

    External Inversion, Internal Inversion, and Reflection Invariance

    Full text link
    Having in mind that physical systems have different levels of structure we develop the concept of external, internal and total improper Lorentz transformation (space inversion and time reversal). A particle obtained from the ordinary one by the application of internal space inversion or time reversal is generally a different particle. From this point of view the intrinsic parity of a nuclear particle (`elementary particle') is in fact the external intrinsic parity, if we take into account the internal structure of a particle. We show that non-conservation of the external parity does not necessarily imply non-invariance of nature under space inversion. The conventional theory of beta-decay can be corrected by including the internal degrees of freedom to become invariant under total space inversion, though not under the external one.Comment: 15 pages. An early proposal of "mirror matter", published in 1974. This is an exact copy of the published paper. I am posting it here because of the increasing interest in the "exact parity models" and its experimental consequence

    Underground Phased Arrays and Beamforming Applications

    Get PDF
    This chapter presents a framework for adaptive beamforming in underground communication. The wireless propagation is thoroughly analyzed to develop a model using the soil moisture as an input parameter to provide feedback mechanism while enhancing the system performance. The working of array element in the soil is analyzed. Moreover, the effect of soil texture and soil moisture on the resonant frequency and return loss is studied in detail. The wave refraction from the soil–air interface highly degrades the performance of the system. Furthermore, to beam steering is done to achieve high gain for lateral component improving the UG communication. The angle enhancing the lateral wave depends upon dielectric properties and usually ranges from 0∘ to 16∘. These dielectric properties change with the change in soil moisture and soil texture. It is shown from the experiments that optimal UG lateral angle is high at lower soil moisture readings and decreases with decrease in soil moisture. A planar structure of antenna array and different techniques for optimization are proposed for enhanced soil moisture adaptive beamforming. UG channel impulse response is studied from the beamforming aspect to identify the components of EM waves propagating through the soil. An optimum steering method for beamforming is presented which adapts to the changing values of soil moisture. Finally, the limitations of UG beamforming are presented along with the motivation to use it

    Bleeding after dental extractions in patients taking warfarin.

    Get PDF
    ObjectiveTo assess the incidence of bleeding after dental extractions in subjects taking warfarin continuously before and after extractions whose International Normalised Ratio (INR) was below 4.0 at the time of extraction.MethodsThis was a case series study of 150 patients without controls who required extraction of at least one tooth under local anaesthetic. All sockets were subsequently packed with absorbable oxycellulose and sutured.ResultsA total of 58 women and 92 men were included (mean age 66 years); their ages were similar. The mean INR (S.D.) was 2.5 (0.56), although most patients had an INR less than 2.5 (n=101). Ten patients (7%) bled after extraction, enough to require a return to hospital. Five patients of 101 with an INR2.5 out of 49 bled after extraction (p=0.29). Bleeding after extraction was not associated with operative antibiotics. All patients who bled were managed conservatively and none was admitted to hospital.ConclusionPatients taking warfarin whose INR is up to 4.0 and who have dental extractions in hospital do not have clinically significant bleeds post-operatively
    corecore