Distinguishing technicolor models via tt-bar productions at polarized photon colliders

We study top quark pair productions at a polarized photon collider from an e(+)e(-) linear collider (LC) in various improved technicolor model, namely, the one-family walking technicolor model, the top-color-assisted technicolor model, and the top-color-assisted multiscale technicolor model. Recent constraint on the top-pion mass from the precision data of R(b) is considered. It is shown that, considering only the statistical errors, a polarized photon collider from a 500 GeV LC with an integrated luminosity of 500 inverse fb is sufficient for distinguishing the three improved technicolor models experimentally.Comment: 7 pages, 6 figures, to appear in Physical Review

Braneworld cosmological singularities

The purpose of this brief report is to present some results of our on-going project on the asymptotic behaviour of braneworld-type solutions on approach to their possible finite `time' singularities.Comment: 3 pages, contribution to appear in the Proceedings of the MG11 Meeting, Berlin, July 200

Inflation from Susy quantum cosmology

We propose a realization of inverted hybrid inflation scenario in the context of n=2 supersymmetric quantum cosmology. The spectrum of density fluctuations is calculated in the de Sitter regimen as a function of the gravitino and the Planck mass, and explicit forms for the wave function of the universe are found in the WKB regimen for a FRW closed and flat universes.Comment: 9 pages, one figure, to appear in Phys. Rev.

Study of Bs-> \phi l^+ l^-$ Decay in a Single Universal Extra Dimension

Utilizing form factors calculated within the light-cone sum rules, we have evaluated the decay branching ratios of $B_s\to \phi\gamma$ and $B_s\to \phi \ell^+\ell^-$ in a single universal extra dimension model (UED), which is viewed as one of the alternative theories beyond the standard model (SM). For the decay $B_s \to \phi \ell^+\ell^-$, the dilepton invariant mass spectra, the forward-backward asymmetry, and double lepton polarization are also calculated. For each case, we compared the obtained results with predictions of the SM. In lower values of the compactification factor 1/R, the only parameter in this model, we see the considerable discrepancy between the UED and SM models. However, when 1/R increases, the results of UED tend to diminish and at $1/R = 1000 \mathrm{GeV}$, two models have approximately the same predictions. Compared with data from CDF of $B_s \to \phi \mu^+ \mu^-$, the 1/R tends to be larger than $350 \mathrm{GeV}$. We also note that the zero crossing point of the forward-backward asymmetry is become smaller, which will be an important plat to prob the contribution from the extra dimension model. The results obtained in this work will be very useful in searching new physics beyond SM. Moreover, the order of magnitude for branching ratios shows a possibility to study these channels at the Large Hadron Collider (LHC), CDF and the future super-B factory.Comment: 13 pages, 16 figure

Pengaruh penerapan model pembelajaran talking stick terhadap aktivitas dan hasil belajar peserta didik pada materi ciri-ciri mahluk hidup kelas vii SMP N 3 Bulik Timur Kab. Lamandau

Undang-Undang Nomor 20 Tahun 2003 tentang Sistem Pendidikan Nasional pasal 3 menyatakan bahwa pendidikan nasional bertujuan untuk meningkatkan potensi siswa untuk menjadi manusia yang beriman dan mengabdi kepada Tuhan Yang Maha Esa, memiliki moralitas yang baik, berpengetahuan luas, mampu, kreatif, mandiri, dan menjadi warga negara. yang demokratis dan bertanggung jawab. Masalah yang diteliti adalah (1). Bagaimana pengaruh penerapan model learning stick berbicara terhadap aktivitas siswa pada materi pelajaran biologi terhadap karakteristik makhluk hidup di kelas VII SMP Negeri 3 Bulik Timur Kabupaten Lamandau. (2) Bagaimana pengaruh penerapan model learning stick berbicara terhadap hasil belajar siswa pada materi pelajaran biologi pada karakteristik makhluk hidup di kelas VII SMP Negeri 3 Bulik Timur, Kabupaten Lamandau. (3) Bagaimana tanggapan siswa terhadap penerapan model pembelajaran stik berbicara dalam mata pelajaran biologi pada karakteristik makhluk hidup di kelas VII SMP Negeri 3 Bulik Timur, Kabupaten Lamandau. Penelitian ini menggunakan metode kuantitatif dengan jenis penelitian korelasional. Adapun penelitian ini menggunakan Cluster Sampling, peneliti hanya mengambil 2 kelas, yaitu kelas VIIB dan VIIC, yang berjumlah 48 siswa. Langkah-langkah pemrosesan data adalah Pengeditan, Pengodean, Pembuatan Tabulasi, dan Analisis. Pengumpulan data menggunakan teknik Popilasi, Tes, Dokumentasi dan Perangko. Kemudian uji hipotesisnya Hasil penelitian menunjukkan bahwa (1) Manajemen pembelajaran berada dalam kategori cukup baik, dengan hasil rubrik penilaian rata-rata. (2) aktivitas belajar siswa menggunakan model learning stick dengan kualifikasi sangat tinggi, ini didasarkan pada data responden yang menunjukkan angka sekitar 65-95 dan juga dibuktikan dengan hasil rata-rata (rata-rata) sebesar 83,29. . (3) Hasil belajar siswa pada karakteristik materi makhluk hidup di SMP N 3 Bulik Timur termasuk dalam kriteria cukup ABSTRACT Law No. 20 of 2003 concerning National Education System article 3 states that national education aims to increase the potential of students to become human beings who believe and be devoted to God Almighty, have good morality, knowledgeable, capable, creative, independent and become citizens who are democratic and responsible. The problems studied are (1). How does the effect of the application of the talking stick learning model on the activities of students in the subject matter biology of the characteristics of living things in class VII SMP Negeri 3 Bulik Timur Lamandau Regency. (2). How does the effect of the application of the talking stick learning model on the learning outcomes of students in the subject matter of biology on the characteristics of living things in class VII of SMP Negeri 3 Bulik Timur, Lamandau Regency. (3). How do students respond to the application of the talking stick learning model in the subject matter of biology on the characteristics of living things in grade VII of SMP Negeri 3 Bulik Timur, Lamandau Regency. This research uses quantitative methods with correlational type of research As for this study using Cluster Sampling, researchers only took 2 classes, namely classes VIIB and VIIC, amounting to 48 students. Data processing steps are Editing, Coding, Tabularing, and Analizing. Data collection uses Popilation, Test, Documentation and Stamp techniques. Then test the hypothesis The results showed that (1) Learning management is in the quite good category, with the results of the assessment rubric being on average. (2) student learning activities using the talking stick learning model at very high qualifications, this is based on respondents' data showing figures around 65-95 and also evidenced by the mean results (average) of 83.29. . (3) Student learning outcomes on the material characteristics of living things in SMP N 3 East Bulik are included in the sufficient criteri

Universal properties of Fermi gases in arbitrary dimensions

We consider spin-1/2 Fermi gases in arbitrary, integer or non-integer spatial dimensions, interacting via a Dirac delta potential. We first generalize the method of Tan's distributions and implement short-range boundary conditions to arbitrary dimension and we obtain a set of universal relations for the Fermi gas. Three-dimensional scattering under very general conditions of transversal confinement is described by an effectively reduced-dimensional scattering length, which we show depends on the three-dimensional scattering length in a universal way. Our formula for non-integer dimensions interpolates between the known results in integer dimensions 1, 2 and 3. Without any need to solve the associated multichannel scattering problem, we find that confinement-induced resonances occur in all dimensions different from D=2, while reduced-dimensional contacts, related to the tails of the momentum distributions, are connected to the three-dimensional contact by a correction factor of purely geometric origin.Comment: 6 pages, 0 figure

What Is Retirement? A Review and Assessment of Alternative Concepts and Measures

Since the concept of retirement is prominent in both popular thinking and academic studies it would be helpful if the notion were analytically sound, could be measured with precision, and would make possible comparisons of patterns of retirement over time and among different populations. This paper reviews and assesses the many concepts and measures that have been proposed, summarizing them in groupings that reflect nonparticipation or reduced participation in the labour force, receipt of pension income, endof- career employment, self-assessed retirement, or combinations of those characteristics. It concludes that there is no agreed measure and that no one measure dominates. Instead, new measures continue to be proposed to take account of additional refinements as new data sets become available, thereby further restricting possible comparisons. The confusing array of definitions reflects the practical problem that underlies the concept of retirement: it is an essentially negative notion, a notion of what people are not doing – namely, that they are not working. A more positive approach would be to focus instead on what people are doing, including especially their involvement in non-market activities that are socially productive, even if those activities do not contribute to national income as conventionally measured.concepts of retirement, measures of retirement