40,670 research outputs found
Near Tribimaximal Neutrino Mixing with Delta(27) Symmetry
The discrete subgroup Delta(27) of SU(3) has the interesting multiplication
rule 3 X 3 = bar{3} + bar{3} + bar{3}, which is used to obtain near
tribimaximal neutrino mixing. Using present neutrino oscillation data as input,
this model predicts that the effective mass m_{ee} measured in neutrinoless
double beta decay will be 0.14 eV.Comment: 6 pages, no figur
Dark Scalar Doublets and Neutrino Tribimaximal Mixing from A_4 Symmetry
In the context of A_4 symmetry, neutrino tribimaximal mixing is achieved
through the breaking of A_4 to Z_3 (Z_2) in the charged-lepton (neutrino)
sector respectively. The implied vacuum misalignment of the (1,1,1) and (1,0,0)
directions in A_4 space is a difficult technical problem, and cannot be treated
without many auxiliary fields and symmetries (and perhaps extra dimensions). It
is pointed out here that an alternative scenario exists with A_4 alone and no
redundant fields, if neutrino masses are "scotogenic", i.e. radiatively induced
by dark scalar doublets as recently proposed.Comment: 8 pages, 2 figures, 1 reference and 1 paragraph adde
Explicit towers of Drinfeld modular curves
We give explicit equations for the simplest towers of Drinfeld modular curves
over any finite field, and observe that they coincide with the asymptotically
optimal towers of curves constructed by Garcia and Stichtenoth.Comment: 10 pages. For mini-symposium on "curves over finite fields and codes"
at the 3rd European Congress in Barcelona 7/2000 Revised to correct minor
typographical and grammatical error
PAUL RICOEUR AND THE TRANSLATION-INTERPRETATION OF CULTURES
Dengan mengelola gagasan Ricoeur tentang âHermeneutics of Self â artikel ini membahas kesadaran tentang pluralitas budaya dan bahasa yang makin nyata. Dalam situasi itu komunikasi makna menuntut âpenerjemahanâ serentak kewajiban âberdukacitaâ. Dalam kerangka itu identitas bukan lagi soal âbatasâ melainkan soal interaksi. Identitas mesti dilihat sebagai sesuatu yang tak pernah final, ber-evolusi dalam saling penerjemahan antar bahasa dan budaya. Penerjemahan adalah pertaruhan yang diwarnai âdukacitaâ sebab penerjemahan identitas kita oleh pihak lain (eksternal) maupun oleh diri sendiri (internal) selalu hanya sampai pada âekuivalensi tanpa adekuasiâ, dan kesenjangan itu tak kan pernah teratasi
Scale Dependence of Twist-3 Quark-Gluon Operators for Single Spin Asymmetries
We derive the scale dependence of twist-3 quark-gluon operators, or ETQS
matrix elements, at one-loop. These operators are used to factorize transverse
single spin asymmetries, which are studied intensively both in experiment and
theory. The scale dependence of two special cases are particularly interesting.
One is of soft-gluon-pole matrix elements, another is of soft-quark-pole matrix
elements. From our results the evolutions in the two cases can be obtained. A
comparison with existing results of soft-gluon-pole matrix elements is made.Comment: typo in Eq.(10) corrected, references adde
Z_3 Dark Matter and Two-Loop Neutrino Mass
Dark matter is usually distinguished from ordinary matter by an odd-even
parity, i.e. the discrete symmetry Z_2. The new idea of Z_3 dark matter is
proposed with a special application to generating radiative Majorana neutrino
masses in two-loop order.Comment: expanded (9 pages, 2 figures), 2 references adde
Combining isotonic regression and EM algorithm to predict genetic risk under monotonicity constraint
In certain genetic studies, clinicians and genetic counselors are interested
in estimating the cumulative risk of a disease for individuals with and without
a rare deleterious mutation. Estimating the cumulative risk is difficult,
however, when the estimates are based on family history data. Often, the
genetic mutation status in many family members is unknown; instead, only
estimated probabilities of a patient having a certain mutation status are
available. Also, ages of disease-onset are subject to right censoring. Existing
methods to estimate the cumulative risk using such family-based data only
provide estimation at individual time points, and are not guaranteed to be
monotonic or nonnegative. In this paper, we develop a novel method that
combines Expectation-Maximization and isotonic regression to estimate the
cumulative risk across the entire support. Our estimator is monotonic,
satisfies self-consistent estimating equations and has high power in detecting
differences between the cumulative risks of different populations. Application
of our estimator to a Parkinson's disease (PD) study provides the age-at-onset
distribution of PD in PARK2 mutation carriers and noncarriers, and reveals a
significant difference between the distribution in compound heterozygous
carriers compared to noncarriers, but not between heterozygous carriers and
noncarriers.Comment: Published in at http://dx.doi.org/10.1214/14-AOAS730 the Annals of
Applied Statistics (http://www.imstat.org/aoas/) by the Institute of
Mathematical Statistics (http://www.imstat.org
Fair value versus historic cost Valuation for Biological assets: Implications for the quality of financial information
This research finds neither significant differences in earnings and revenues for farms using fair value (FV) for biological assets with respect to those valuing at historic cost (HC), nor an increase in their volatility. It does not bring about differences in profitability, accounting manipulation and farm cash flows predictability either. On the contrary, most tests reveal higher predictive power of future earnings under FV. The study also provides evidence on flawed HC accounting practices in the agricultural sector and concludes that FV seems an interesting tool for the predominant small holdings in the agricultural sector in the European Union.accounting relevance, historic cost, agricultural accounting, prediction, fair value, earnings, cash flow prediction, biological assets
Structural Capital Management: A Guide For Indicators
Intellectual Capital is of vital importance, both for the scientific community and business reality. For this reason, over the past decades its relevance has rapidly increased. Within Intellectual Capital (from here on IC), Structural Capital (from here on, SC) plays an outstanding paper, given that is represents the part of knowledge that the organization is able to explicit, systematize and internalize and that, initially, is latent in employees or teams. This type of capital allows for organizational effectiveness improvement through the transmission of knowledge.The objectives of this paper is, first, to identify the elements of IC that help to guarantee the success of companies belonging to a given sector, paying special attention to the contributions of SC to IC. Second, and after observing that most existing papers are centered only on the measurement of SC and, therefore, leave aside elements regarding its management, our proposal fills this gap and includes various general indicators for SC that may help to manage it adequately. The basic aim is to allow managers themselves to choose the most adequate indicators within those presented, taking into account, of course, characteristics, objectives and strategies of the companies they manage
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