Response of the Bilinear Hysteretic System to Stationary Random Excitation

Time-average statistics of the response of the bilinear hysteretic system to an excitation with approximately white-power spectral density and approximately Gaussian probability distribution are determined, using electronic-analog techniques. Results are presented for the mean-squared amplitude, the power spectral density, and the probability distribution of the response. The applicability of the Krylov-Bogoliubov method of equivalent linearization to this problem is investigated by comparing predicted and experimentally measured values of the mean-squared level of response

Source Mechanism and Wave Propagation Arrays

The strong earthquake ground motion experienced at a given site can be considered to be a space-time convolution of the earthquake source function with the path effect and the effect of local site conditions. This chapter deals with the design of arrays to measure source and path effects for strong ground motion

Sistem Otomasi Penggerak Kamera Dengan Motor Step Sebagai Alat Bantu Kalibrasi Alat Ukur Panjang

Alat ukur panjang merupakan alat yang digunakan untuk mengukur jarak antara dua titik dan mengukur pada kegiatan teknik maupun penelitian yang paling banyak dipakai dalam dunia industri maupun perdagangan. Sehingga, pengujian alat ukur panjang mutlak dibutuhkan untuk menjamin kebenaran alat ukur. Saat ini pengujian tera dan tera ulang alat ukur panjang yang ada di Pusat Pengembangan Sumber Daya Manusia Kemetrologian (PPSDMK) Bandung dilakukan dengan membandingkan alat ukur terhadap komparator standar. Pengamatan dilakukan menggunakan web-camera yang ditampilkan pada layar monitor. Kondisi kamera terpasang diam sehingga area pengamatan titik uji sempit, pemosisian kamera, dan pembacaan hasil uji harus dilakukan secara manual. Untuk meningkatkan mobilitas kamera, dalam penelitian ini dibuat sistem otomasi penggerak kamera menggunakan motor step. Motor dikontrol menggunakan mikrokontroler, sehingga  kecepatan motor dapat diatur untuk menempatkan kamera pada posisi yang diinginkan menggunakan antar muka yang  yang dilengkapi dengan pengolahan citra sederhana sehingga dapat mendeteksi posisi skala dan menentukan posisi kamera. Berdasarkan hasil pengujian yang telah dilakukan, posisi kamera telah dapat dikontrol sehingga motor akan berhenti ketika kamera mendeteksi posisi skala standar, serta menampilkan citra gambar secara langsung. Karakteristik pengukuran selisih skala meliputi sensitivitas 0,095 mm/pixel, akurasi 96% dan presisi 98%.Keywords: Alat ukur; control; web-camera; motor step; citra; pengukura

Low-density series expansions for directed percolation II: The square lattice with a wall

A new algorithm for the derivation of low-density expansions has been used to greatly extend the series for moments of the pair-connectedness on the directed square lattice near an impenetrable wall. Analysis of the series yields very accurate estimates for the critical point and exponents. In particular, the estimate for the exponent characterizing the average cluster length near the wall, $\tau_1=1.00014(2)$, appears to exclude the conjecture $\tau_1=1$. The critical point and the exponents $\nu_{\parallel}$ and $\nu_{\perp}$ have the same values as for the bulk problem.Comment: 8 pages, 1 figur

The Use of Animated Short Film as Media for Teaching English Narrative Writing

This research aims to find out the effectiveness of the animated short film as media for teaching English narrative writing on the third grade students of SMA Negeri 8 Pontianak in academic year 2014/2015. The research method that used is a quasi-experimental and the research design that used is non-equivalent control group design. The study sample is 60 students. The result of data analysis showed that mean score of the experimental class was higher (from 36.67 to 75.33) than control class (from 41.33 to 62.50). The computation of the effect size with the score 1.48 ( > 1.00) shows that the use of animated short film as media has the strong effect for teaching English narrative writing

Patient-centred pharmaceutical design to improve acceptability of medicines : similarities and differences in paediatric and geriatric populations

Open Access. This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited.Patient acceptability of a medicinal product is a key aspect in the development and prescribing of medicines. Children and older adults differ in many aspects from the other age subsets of population and require particular considerations in medication acceptability. This review highlights the similarities and differences in these two age groups in relation to factors affecting acceptability of medicines. New and conventional formulations of medicines are considered regarding their appropriateness for use in children and older people. Aspects of a formulation that impact acceptability in these patient groups are discussed, including, for example, taste/smell/viscosity of a liquid and size/shape of a tablet. A better understanding of the acceptability of existing formulations highlights opportunities for the development of new and more acceptable medicines and facilitates safe and effective prescribing for the young and older populationsPeer reviewedFinal Published versio

Pengaruh Supervisi Akademik dan Kepemimpinan Situasional Kepala Sekolah terhadap Kinerja Guru SMP Negeri Sambas

: This research to reveal the influence of the academic supervision and situational leadership principals on teacher performance SMP in Subrayon 4 Sambas. This study uses a quantitative approach. The data used is quantitative data. The population in this research were 106 teachers. While the sample amounted to 84 teachers. Data were collected using a questionnaire with measurement models using Likert scale. The collected data is tabulated. Then analyzed with the help of a computer application program, SPSS version 16 for Window. The results showed that 1) the influence of the academic supervision of the school head (X1) on teacher performance (Y) Beta (b1) of 0.407 = 40.70%, 2) the effect of situational leadership principals (X2) the performance of teachers (Y) Beta (b1) of 0.324 = 32.40%, 3) effect of academic supervision (X1) and situational leadership principals (X2) on teacher performance of 0.395 or 39, 50%. The test results are shown in the output F ANOVA results of multiple linear regression analysis showed that F count> F table (26.431 > 3.105)