221 research outputs found

    Negative forms and path space forms

    Full text link
    We present an account of negative differential forms within a natural algebraic framework of differential graded algebras, and explain their relationship with forms on path spaces.Comment: 12 pp.; the Introduction has been rewritten and mention of cohomology dropped in Proposition 3.2; material slightly reorganize

    C2. Pneumonia adquirida na comunidade (PAC) – influência da terapêutica com macrólidos ou novas fluoroquinolonas na evolução e duração de internamento

    Get PDF
    The need to cover atypical agents in the initial Community-Acquired Pneumonia (CAP) inpatients therapy is currently the focus of much debate. A lack of consensus in this issue might relate to regional variation in the prevalence of atypical agents. The most recent American guidelines (ATS and IDSA) suggest the use of a macrolid or a antipneumococcal fluoroquinolone in the initial empirical therapy of CAP, so that atypical agents are also always covered. This study aimed to compare the progression and length of hospitalization between CAP patients treated with a combination of a beta-lactamic antibiotic and a macrolid or a new quinolone (Group I) and other form of therapy without atypical agent coverage (Group II). A retrospective study was performed with 180 inpatients, admitted with PAC diagnosis between December 2000 and May 2002 in a general Pneumology Service. 105 (58,3%) patients were included in Group I and 75 (41,7%) in Group II. There were no statistically significant differences between the two groups regarding age, sex, clinical presentation, co morbidities or severity of the inaugural presentation. There were 14 patients with unfavourable clinical progression belonging 50% of them to Group I. The average of the length of hospital stay in Group I was 12.2 days and 13.7 days in Group II, which is also a non-significant statistical difference.Then, we may conclude that initial therapy covering atypical agents might not always be necessary. Prospective studies will be important to further address this question and to investigate the epidemiology of atypical agents of CAP in Portugal

    What are the Factors Affecting the Use of Pap Smear for Cervical Cancer Early Detection in Women? A New Path Analysis Evidence from Banyumas, Central Java

    Full text link
    Background: Cervical cancer is a major public health issue. It is the second most common cancer among women in the world, and one of leading cause of death by gynecologic malignant tumor in developing countries. Pap smear has been recognized as an effective strategy for reducing the incidence and mortality rate of cervical cancer. This study aimed to investigate the determinants of Pap smear utilization for cervical cancer early detection in women of reproductive age using path analysis model. Subjects and Method: This was a case-control study conducted in Cilongok and Ajibarang Sub-districts, Banyumas, Central Java, from January 3 to February 3, 2018. A total sample of 200 women reproductive age was selected for this study by fixed disease sampling. The dependent variable was Pap smear utilization. The independent variables were education level, attitude, perception on the quality health care, access to the health center, family support, peer support, and health personnel support. The data were collected by questionnaire and analyzed by path analysis. Results: The use of Pap smear increased with high education (b= 2.63; 95% CI= 1.77 to 3.48 p<0.001), good perception on quality of health care(b= 1.04; 95% CI= 0.22 to 1.86; p= 0.012), positive attitude (b= 1.48; 95% CI= 0.51 to 2.44 p= 0.003), good access to health center (b= 1.02; 95% CI= 0.20 to 1.84 p= 0.015), strong family support (b= 1.29; 95% CI= 0.22 to 2.61; p= 0.029), and strong health personnel support (b= 2.02; 95% CI= 0.60 to 3.45 p= 0.005). The use of Pap smear was indirectly associated with peer support through perception on quality health care. Conclusion: The use of Pap smear increases with education, perception on quality of health care, attitude, access to health center, family support, and health personnel support. Keywords: Pap smear, cervical cancer, education, attitude, perception, family support, peer support, health personnel suppor

    Emerging approaches to retail outlet management

    Get PDF

    Neutrino masses, cosmological bound and four zero Yukawa textures

    Get PDF
    Four zero neutrino Yukawa textures in a specified weak basis, combined with μτ\mu\tau symmetry and type-I seesaw, yield a highly constrained and predictive scheme. Two alternately viable 3×33\times3 light neutrino Majorana mass matrices mνA/mνBm_{\nu A}/m_{\nu B} result with inverted/normal mass ordering. Neutrino masses, Majorana in character and predicted within definite ranges with laboratory and cosmological inputs, will have their sum probed cosmologically. The rate for 0νββ0\nu\beta\beta decay, though generally below the reach of planned experiments, could approach it in some parameter region. Departure from μτ\mu\tau symmetry due to RG evolution from a high scale and consequent CP violation, with a Jarlskog invariant whose magnitude could almost reach 6×1036\times 10^{-3}, are explored.Comment: Published versio

    Production Mechanism for Quark Gluon Plasma in Heavy Ion Collisions

    Get PDF
    A general scheme is proposed here to describe the production of semi soft and soft quarks and gluons that form the bulk of the plasma in ultra relativistic heavy ion collisions. We show how to obtain rates as a function of time in a self consistent manner, without any ad-hoc assumption. All the required features - the dynamical nature of QCD vacuum, the non-Markovian nature of the production, and quasi particle nature of the partons, and the importance of quantum interference effects are naturally incorporated. We illustrate the results with a realistic albeit toy model and show how almost all the currently employed source terms are unreliable in their predictions. We show the rates in the momentum space and indicate at the end how to extract the full phase-space dependence.Comment: 4 pages, 4 figures, two colum

    The potential use of service-oriented infrastructure framework to enable transparent vertical scalability of cloud computing infrastructure

    Get PDF
    Cloud computing technology has become familiar to most Internet users. Subsequently, there has been an increased growth in the use of cloud computing, including Infrastructure as a Service (IaaS). To ensure that IaaS can easily meet the growing demand, IaaS providers usually increase the capacity of their facilities in a vertical IaaS increase capability and the capacity for local IaaS amenities such as increasing the number of servers, storage and network bandwidth. However, at the same time, horizontal scalability is sometimes not enough and requires additional strategies to ensure that the large number of IaaS service requests can be met. Therefore, strategies requiring horizontal scalability are more complex than the vertical scalability strategies because they involve the interaction of more than one facility at different service centers. To reduce the complexity of the implementation of the horizontal scalability of the IaaS infrastructures, the use of a technology service oriented infrastructure is recommended to ensure that the interaction between two or more different service centers can be done more simply and easily even though it is likely to involve a wide range of communication technologies and different cloud computing management. This is because the service oriented infrastructure acts as a middle man that translates and processes interactions and protocols of different cloud computing infrastructures without the modification of the complex to ensure horizontal scalability can be run easily and smoothly. This paper presents the potential of using a service-oriented infrastructure framework to enable transparent vertical scalability of cloud computing infrastructures by adapting three projects in this research: SLA@SOI consortium, Open Cloud Computing Interface (OCCI), and OpenStack

    Prevalensi Dan Serovar Penyebab Leptospirosis Pada Domba Di Kabupaten Kulon Progo

    Full text link
    Leptospirosis is a zoonotic disease, caused by Leptospira interrogans. A source of transmission in human leptospirosis are rodents, livestock, pets and wild animals. The prevalence of leptospirosis in cattle soon after theoutbreak of leptospirosis in humans that occurs in Kulon Progo district in 2011, reached 3.4% by the various serovar Leptospira. Breeding conditions of the people who still puts cattle and sheep in a single environment which enables transmission of leptospirosis in cattle. The purpose of this study was to determine the prevalence of leptospirosis and identify serovar caused of leptospirosis in sheep in Kulon Progo. A total of 60 sheep were done blood collection from the jugular vein 5 ml, serum was separated for leptospirosis examination with Microscopic Aglutination Test (MAT) which conducted at the Research Center for Veterinary Science, Bogor. Microscopic Aglutination Test carried out on various Leptospira serovar, namely: chterohaemorrhagiae, Javanica, Celledoni, Ballum, Pyogenes, Cynopeteri, Rachmati, Auatralis, Pomona, Canicola, Grippotyphosa, Bataviae, Hardjo, and Tarrasovi. Leptospirosis prevalence rate was calculated by dividing the result by the number of MAT positive samples examined. Serovar types that give a positive agglutination result was serovar that caused leptospirosis in sheep. The results showed that two samples were positive against antigen serovarIchterohaemorrhagiae. Based on these results can be concluded that the prevalence of leptospirosis in sheep in Kulon Progo district were 3.3%. The cause of leptospirosis in sheep in Kulon Progo was Leptospira interrogansIchterohaemorrhagiae serovar

    R parity violating contribution to e+e(μ+μ)tcˉe^+e^-(\mu^+\mu^-)\to t{\bar c}

    Full text link
    In this article we consider the contribution of RpR_p violating couplings to the process e+e(μ+μ)tcˉe^+e^-(\mu^+\mu^-)\to t{\bar c} at high energy lepton collider. We show that the present upper bound on the relevant RpR_p violating coulpings obtained from low energy measurements would produce a few hundred to a thousand top-charm events at the next linear e+e(μ+μ)e^+e^-(\mu^+\mu^-) collider. Hence, it should be possible to observe the rare process at future lepton collider.Comment: LaTEX, 13 pages, one figure is removed. A brief discussion on possible backgrounds is added. To appear in Phys. Rev.

    'Mu-Tau' symmetry, tribimaximal mixing and four zero neutrino Yukawa textures

    Get PDF
    Within the type-I seesaw framework with three heavy right chiral neutrinos and in the basis where the latter and the charged leptons are mass diagonal, a near `mu-tau' symmetry in the neutrino sector is strongly suggested by the neutrino oscillation data. There is further evidence for a close to the tribimaximal mixing pattern which subsumes `mu-tau' symmetry. On the other hand, the assumption of a (maximally allowed) four zero texture in the Yukawa coupling matrix Y_nu in the same basis leads to a highly constrained and predictive theoretical scheme. We show that the requirement of an exact `mu-tau' symmetry, coupled with observational constraints, reduces the `seventy two' allowed textures in such a `Y_nu' to 'only four' corresponding to just two different forms of the light neutrino mass matrix `m_nu'. The effect of each of these on measurable quantities can be described, apart from an overall factor of the neutrino mass scale, in terms of two real parameters and a phase angle all of which are within very constrained ranges. The additional input of a tribimaximal mixing reduces these three parameters to `only one' with a very nearly fixed value. Implications for both flavored and unflavored leptogenesis as well as radiative lepton flavor violating decays are discussed. We also investigate the stability of these conclusions under small deviations due to renormalization group running from a high scale where the four zero texture as well as `mu-tau' symmetry or the tribimaximal mixing pattern are imposed.Comment: Typographical changes,accepted for publication in JHE
    corecore