40 research outputs found
Study of a Neutrino Mass Texture Generated in Supergravity with Bilinear R-Parity Violation
We study a particular texture of the neutrino mass matrix generated in
supergravity with bilinear R-Parity violation. The relatively high value of
makes the one-loop contribution to the neutrino mass matrix as
important as the tree-level one. The atmospheric angle is nearly maximal, and
its deviation from maximal mixing is related to the smallness of the ratio
between the solar and atmospheric mass scales. There is also a common origin
for the small values of the solar and reactor angles, but the later is much
smaller due the large mass ratio between the lightest two neutrinos. There is a
high dependence of the neutrino mass differences on the scalar mass and
the gaugino mass , but a smaller one of the mixing angles on the same
sugra parameters. Measurements of branching ratios for the neutralino decays
can give important information on the parameters of the model. There are good
prospects at a future Linear Collider for these measurements, but a more
detailed analysis is necessary for the LHC.Comment: 21 pages, 9 figure
PERBANDINGAN VOLATILITAS DAN RISIKO PASAR PRODUK DANA PIHAK KETIGA (DPK) PADA BANK MANDIRI CABANG BANDUNG BUAHBATU
Penelitian ini bertujuan untuk membandingkan perbedaan volatilitas dan risiko pasar produk Dana Pihak Ketiga (Tabungan, Giro dan Deposito) pada Bank Mandiri Cabang Bandung Buahbatu, menganalisis hasil estimasi varians dari masing-masing produk dana pihak ketiga serta mengukur tingkat kerugian maksimum yang dapat terjadi untuk masing-masing produk dana pihak ketiga dalam periode tiga tahun terakhir (2014,2015 dan 2016).
Penelitian ini menggunakan model volatilitas meliputi uji Augmented Dickey Fuller (ADF) untuk melihat nilai varians untuk masing-masing produk dana pihak ketiga, kemudian menggunakan metode ARCH/GARCH beserta turunannya untuk mendapat nilai estimasi yang optimum melalui proses trial and error serta penelitian ini menghitiung tingkat Value at Risk (VaR) dengan menggunakan Historical Simulation dan Monte Carlo Simulation untuk mengukur tingkat kerugian maksimum yang dapat terjadi untuk masing-masing produk dana pihak ketiga dalam periode waktu yang berbeda.
Hasil penelitian menunjukan bahwa berdasarkan hasil uji ADF bahwa p-value untuk semua kombinasi data kurang dari 0.05 artinya semua series data yang akan digunakan dalam pemodelan telah memenuhi asumsi kestatsioneran. Hasil pengolahan metode ARCH/GARCH rata-rata volatilitas tertinggi adalah produk Giro. Nilai VaR dengan menggunakan metode Historical Simulation dan Monte Carlo Simulation bahwa produk Giro selalu paling buruk disetiap tahunnya, sedangkan produk Tabungan dan Deposito cenderung lebih rendah dan konsisten.
Kata Kunci : Volatilitas, Risiko Pasar, Dana Pihak Ketiga, ARCH/GARCH, Va
Updated Post-WMAP Benchmarks for Supersymmetry
We update a previously-proposed set of supersymmetric benchmark scenarios,
taking into account the precise constraints on the cold dark matter density
obtained by combining WMAP and other cosmological data, as well as the LEP and
b -> s gamma constraints. We assume that R parity is conserved and work within
the constrained MSSM (CMSSM) with universal soft supersymmetry-breaking scalar
and gaugino masses m_0 and m_1/2. In most cases, the relic density calculated
for the previous benchmarks may be brought within the WMAP range by reducing
slightly m_0, but in two cases more substantial changes in m_0 and m_1/2 are
made. Since the WMAP constraint reduces the effective dimensionality of the
CMSSM parameter space, one may study phenomenology along `WMAP lines' in the
(m_1/2, m_0) plane that have acceptable amounts of dark matter. We discuss the
production, decays and detectability of sparticles along these lines, at the
LHC and at linear e+ e- colliders in the sub- and multi-TeV ranges, stressing
the complementarity of hadron and lepton colliders, and with particular
emphasis on the neutralino sector. Finally, we preview the accuracy with which
one might be able to predict the density of supersymmetric cold dark matter
using collider measurements.Comment: 43 pages LaTeX, 13 eps figure
Phenomenological Aspects of Heterotic Orbifold Models at One Loop
We provide a detailed study of the phenomenology of orbifold
compactifications of the heterotic string within the context of supergravity
effective theories. Our investigation focuses on those models where the soft
Lagrangian is dominated by loop contributions to the various soft supersymmetry
breaking parameters. Such models typically predict non-universal soft masses
and are thus significantly different from minimal supergravity and other
universal models. We consider the pattern of masses that are governed by these
soft terms and investigate the implications of certain indirect constraints on
supersymmetric models, such as flavor-changing neutral currents, the anomalous
magnetic moment of the muon and the density of thermal relic neutralinos. These
string-motivated models show novel behavior that interpolates between the
phenomenology of unified supergravity models and models dominated by the
superconformal anomaly.Comment: 47 pages, 14 figure
S_3 Flavor Symmetry and Leptogenesis
We consider leptogenesis in a minimal
S_3 extension of the standard model with an additional Z_2 symmetry in the
leptonic sector. It is found that the CP phase appearing in the neutrino mixing
is the same as that for the CP asymmetries responsible for leptogenesis.
Because of the discrete S_3 x Z_2 flavor symmetries, the CP asymmetries are
strongly suppressed. We therefore assume that the resonant enhancement of the
CP asymmetries takes place to obtain a realistic size of baryon number
asymmetry in theuniverse. Three degenerate right-handed neutrino masses of
O(10) TeV are theoretically expected in this model.Comment: 25 pages, 3 figure
Controversy and consensus on the management of elevated sperm DNA fragmentation in male infertility: A global survey, current guidelines, and expert recommendations
Purpose
Sperm DNA fragmentation (SDF) has been associated with male infertility and poor outcomes of assisted reproductive technology (ART). The purpose of this study was to investigate global practices related to the management of elevated SDF in infertile men, summarize the relevant professional society recommendations, and provide expert recommendations for managing this condition.
Materials and Methods
An online global survey on clinical practices related to SDF was disseminated to reproductive clinicians, according to the CHERRIES checklist criteria. Management protocols for various conditions associated with SDF were captured and compared to the relevant recommendations in professional society guidelines and the appropriate available evidence. Expert recommendations and consensus on the management of infertile men with elevated SDF were then formulated and adapted using the Delphi method.
Results
A total of 436 experts from 55 different countries submitted responses. As an initial approach, 79.1% of reproductive experts recommend lifestyle modifications for infertile men with elevated SDF, and 76.9% prescribe empiric antioxidants. Regarding antioxidant duration, 39.3% recommend 4–6 months and 38.1% recommend 3 months. For men with unexplained or idiopathic infertility, and couples experiencing recurrent miscarriages associated with elevated SDF, most respondents refer to ART 6 months after failure of conservative and empiric medical management. Infertile men with clinical varicocele, normal conventional semen parameters, and elevated SDF are offered varicocele repair immediately after diagnosis by 31.4%, and after failure of antioxidants and conservative measures by 40.9%. Sperm selection techniques and testicular sperm extraction are also management options for couples undergoing ART. For most questions, heterogenous practices were demonstrated.
Conclusions
This paper presents the results of a large global survey on the management of infertile men with elevated SDF and reveals a lack of consensus among clinicians. Furthermore, it demonstrates the scarcity of professional society guidelines in this regard and attempts to highlight the relevant evidence. Expert recommendations are proposed to help guide clinicians
Caratterizzazione chimica del tegumento di semi di Corylus avellana di differente provenienza geografica.
Quality, cost and teamwork: Adding the human element to perioperative services. Proceedings of the Association of Anesthesia Clinical Directors (AACD) Annual Perioperative Summit, 2019
Patient Navigator Programs, Cancer Disparities, and the Patient Protection and Affordable Care Act
The article describes patient navigator programs and summarizes the elements of the health care law that are relevant to these programs