Kaons and Hyperons rare decays by the NA48 experiment at CERN

Some Kaons and Hyperons rare decays branching ratios and form factors were measured by the NA48 experiment at CERN. The details of the measurements and their importance for the understanding of the CKM quark mixing matrix are discussed.Comment: Talk given at the HEP-MAD04 conference held in Antananarivo(Madagascar) from Septembere 27th to October 3rd, 200

A Simple Multi-Directional Absorbing Layer Method to Simulate Elastic Wave Propagation in Unbounded Domains

The numerical analysis of elastic wave propagation in unbounded media may be difficult due to spurious waves reflected at the model artificial boundaries. This point is critical for the analysis of wave propagation in heterogeneous or layered solids. Various techniques such as Absorbing Boundary Conditions, infinite elements or Absorbing Boundary Layers (e.g. Perfectly Matched Layers) lead to an important reduction of such spurious reflections. In this paper, a simple absorbing layer method is proposed: it is based on a Rayleigh/Caughey damping formulation which is often already available in existing Finite Element softwares. The principle of the Caughey Absorbing Layer Method is first presented (including a rheological interpretation). The efficiency of the method is then shown through 1D Finite Element simulations considering homogeneous and heterogeneous damping in the absorbing layer. 2D models are considered afterwards to assess the efficiency of the absorbing layer method for various wave types and incidences. A comparison with the PML method is first performed for pure P-waves and the method is shown to be reliable in a more complex 2D case involving various wave types and incidences. It may thus be used for various types of problems involving elastic waves (e.g. machine vibrations, seismic waves, etc)

Modelling strong seismic ground motion: three-dimensional loading path versus wavefield polarization

Seismic waves due to strong earthquakes propagating in surficial soil layers may both reduce soil stiffness and increase the energy dissipation into the soil. To investigate seismic wave amplification in such cases, past studies have been devoted to one-directional shear wave propagation in a soil column (1D-propagation) considering one motion component only (1C-polarization). Three independent purely 1C computations may be performed ('1D-1C' approach) and directly superimposed in the case of weak motions (linear behaviour). This research aims at studying local site effects by considering seismic wave propagation in a 1-D soil profile accounting for the influence of the 3-D loading path and non-linear hysteretic behaviour of the soil. In the proposed '1D-3C' approach, the three components (3C-polarization) of the incident wave are simultaneously propagated into a horizontal multilayered soil. A 3-D non-linear constitutive relation for the soil is implemented in the framework of the Finite Element Method in the time domain. The complex rheology of soils is modelled by mean of a multisurface cyclic plasticity model of the Masing-Prandtl-Ishlinskii-Iwan type. The great advantage of this choice is that the only data needed to describe the model is the modulus reduction curve. A parametric study is carried out to characterize the changes in the seismic motion of the surficial layers due to both incident wavefield properties and soil non-linearities. The numerical simulations show a seismic response depending on several parameters such as polarization of seismic waves, material elastic and dynamic properties, as well as on the impedance contrast between layers and frequency content and oscillatory character of the input motion. The 3-D loading path due to the 3C-polarization leads to multi-axial stress interaction that reduces soil strength and increases non-linear effects. The non-linear behaviour of the soil may have beneficial or detrimental effects on the seismic response at the free surface, depending on the energy dissipation rate. Free surface time histories, stress-strain hysteresis loops and in-depth profiles of octahedral stress and strain are estimated for each soil column. The combination of three separate 1D-1C non-linear analyses is compared to the proposed 1D-3C approach, evidencing the influence of the 3C-polarization and the 3-D loading path on strong seismic motions

Recorded displacements in a landslide slope due to regional and teleseismic earthquakes

Regional and teleseismic earthquakes can induce displacements along joints in a landslideinvolved rocky slope in Central Italy. The rarity of these effects is due to specific physical properties of the seismic signals associated with: (i) the energy content, (ii) the distribution of relative energy and peak of ground acceleration related to the ground motion components and (iii) the spectral amplitude distribution in the frequency domain; these properties allow the triggering earthquakes to be distinguished from the others. The observed effects are relevant when compared to the direction of the landslide movement and the dimensions of the involved rock mass volume. The landslide movement is less constrained in the direction parallel to the dip of the slope and the landslide dimensions are associated with characteristic periods that control the landslide deformational response in relation to the spectral content of the ground motion. The earthquake-induced displacements are significant because they have the same order of magnitude as the average annual cumulative displacement based on a decade of strain measurements within the slope

PENGARUH PEMBELAJARAN PJOK TERHADAP KECERDASAN EMOSIONAL DAN KECERDASAN SOSIAL SISWA

Lenti Fatmawati. NIM. 1602263. Skripsi: PENGARUH PEMBELAJARAN PJOK TERHADAP KECERDASAN EMOSIONAL DAN KECERDASAN SOSIAL SISWA. Skripsi ini dibimbing oleh Drs. Mudjihartono, M.Pd., dan Dr. Helmy Firmansyah, M. Pd. Program Studi Pendidikan Jasmani Kesehatan dan Rekreasi. Universitas Pendidikan Indonesia. Tujuan dalam penelitian ini adalah untuk menganalisis pengaruh pembelajaran PJOK terhadap kecerdasan emosional dan kecerdasan sosial siswa. Penelitian menyebutkan bahwa siswa remaja pada masa sekolah dihadapkan pada masalah gangguan emosi dan sosial yang parah. Factor risiko dari gangguan emosi tersebut adalah seperti keterikatan yang lemah yang lemah terhadap sekolah dan rendahnya kemampuan akademik dikalangan remaja (Harlacher & Merrell, 2010). Penelitian ini menggunakan metode ekspost fakto dengan teknik penyebaran angket. Teknik analisis data yang digunakan pada penelitian ini adalah korelasi pearson produk momen. Instrumen yang digunakan dalam penelitian ini berupa angket kecerdasan emosonal yang diadopsi dari jurnal yang berjudul “A Psychometric Analysis Of the Trait Emotional Intelligence Questionnaire-Short Form (TEIQue-SF) Using Item Response Theory” oleh (Cooper, 2010), serta angket kecerdasan sosial yang diadopsi dari jurnal yang berjudul “Can Social Intelligence Be Measured?Psychometric Properties Of The Tromso Social Intelligence Scale – English Version” oleh (Silvera, 2001. Berdasarkan hasil analisis dan pengolahan data, pada pengaruh pembelajaran PJOK terhadap kecerdasan emosional siswa diperoleh nilai sig = 0.040 < 0.05 yang artinya Ho ditolak atau terdapat pengaruh yang signifikan antara pembelajaran PJOK terhadap kecerdasan emosional siswa. Sedangkan pada pegaruh dari pembelajaran PJOK terhadap kecerdasan sosial siswa diperoleh nilai sig = 0.03 < 0.05 yang artinya Ho ditolak atau terdapat pengaruh yang signifikan antara pembelajaran PJOK terdahap kecerdasan sosial siswa. Kata kunci: Pembelajaran PJOK, Kecerdasan Emosional, Kecerdasan Sosial. Lenti Fatmawati. NIM. 1602263. Thesis: EFFECT OF PJOK LEARNING ON STUDENT'S EMOTIONAL INTELLIGENCE AND SOCIAL INTELLIGENCE .This thesis is guided by Drs. Mudjihartono, M.Pd., and Dr. Helmy Firmansyah, M.Pd. Study Program Phycisal Education Health and Recreation. Indonesian Education University. The purpose of this study was to analyze the effect of PJOK learning on students' emotional and social intelligence. Research states that a dolescent students during schooling are faced with severe emotional and social problems. Risk factors for emotional disturbances are weak attachment to school and poor academic ability among adolescents (Harlacher & Merrell, 2010). This research uses facto expost method with questionnaire distribution technique. The data analysis technique used in this study is Pearson correlation of moment products. The instrument used in this study was an emotional intelligence questionnaire adopted from a journal entitled "A Psychometric Analysis of the Trait Emotional Intelligence Questionnaire-Short Form (TEIQue-SF) Using Item Response Theory" by (Cooper, 2010), as well as a social intelligence questionnaire which was adopted from a journal entitled "Can Social Intelligence Be Measured? Psychometric Properties Of The Tromso Social Intelligence Scale - English Version" by (Silvera, 2001. Based on the results of analysis and data processing, on the effect of PJOK learning on students' emotional intelligence obtained sig = 0.040 <0.05 which means Ho is rejected or there is a significant influence between learning PJOK on emotional intelligence of students, while the influence of PJOK learning on social intelligence of students is obtained sig = 0.03 <0.05 which means Ho is rejected or there is a significant influence between learning PJOK stepped up student social intelligence. Keywords: Learning PJOK, Emotional Intelligence, Social Intelligence

STEGANOGRAPHIC METHODS

In this paper we analyze and test several steganographic techniques on still images. We show that embedding a large amount of data into the picture it can modify its visible properties. We compare the RSA and the elliptic curve (ECC) based digital signatures, and we analyze their advantages and disadvantages in steganography. In steganography it is important that the embedded data size should be minimized. Using ECC minimization of the embedded information is possible, because the minimal block size is smaller than in the case of RSA