Measurement and testing problems experienced during FAA's emissions testing of general aviation piston engines

The importance of measuring accurate air and fuel flows as well as the importance of obtaining accurate exhaust pollutant measurements were emphasized. Some of the problems and the corrective actions taken to incorporate fixes and/or modifications were identified

CLEAR: Covariant LEAst-square Re-fitting with applications to image restoration

In this paper, we propose a new framework to remove parts of the systematic errors affecting popular restoration algorithms, with a special focus for image processing tasks. Generalizing ideas that emerged for $\ell_1$ regularization, we develop an approach re-fitting the results of standard methods towards the input data. Total variation regularizations and non-local means are special cases of interest. We identify important covariant information that should be preserved by the re-fitting method, and emphasize the importance of preserving the Jacobian (w.r.t. the observed signal) of the original estimator. Then, we provide an approach that has a "twicing" flavor and allows re-fitting the restored signal by adding back a local affine transformation of the residual term. We illustrate the benefits of our method on numerical simulations for image restoration tasks

Sistem Pendukung Keputusan Menentukan Anak Asuh Pena Prestasi Menggunakan Metode Saw (Simple Additive Weighting) Pada Lembaga Amil Zakat Dana Peduli Ummat Kalimantan Timur

Sistem Pendukung Keputusan Penentuan Anak Asuh , merupakan sistem yang dibuat untuk membantu dalam pengambilan keputusan dalam penentuan anak asuh pada lembaga Amil Zakat Dana Peduli Ummat dengan menggunakan bantuan metode Simple Additive Weighting (SAW). Simple additive weighting adalah pendekatan untuk menyelesaikan persoalan multi attribute decision making. Konsep utama dari metode ini adalah mencari penjumlahan dari semua atribut pada setiap alternatif. Metode simple additive weighting membutuhkan proses normalisasi matriks ke skala atau nilai yang dapat dibandingkan dengan nilai dari alternatif lain dan menemukan alternatif terbaik. Nilai dari alternatif tersebut harus melewati proses normalisasi matriks sebelumnya. Dengan perhitungan antar semua atribut setiap alternatif, sistem dapat membuat sebuah rekomendasi untuk membantu pembuat keputusan untuk membuat keputusan yang efektif dan efisien dari sebelumnya. Membantu Perusahaan untuk menyelesaikan masalah kesulitan dan ketidak akuratan dalam membuat keputusan penentuan calon anak asuh

Intermediate range chemical ordering of cations in simple molten alkali halides

The presence of first sharp diffraction peaks in the partial structure factors is investigated in computer simulations of molten mixtures of alkali halides. An intermediate range ordering appears for the Li+ ions only, which is associated with clustering of this species and is not reflected in the arrangement of other ions. This ordering is surprising in view of the simplicity of the interionic interactions in alkali halides. The clustering reflects an incomplete mixing of the various species on a local length scale, which can be demonstrated by studying the complementary sub-space of cations in the corresponding pure alkali halides by means of a void analysis.Comment: 5 pages, 5 figure

Asteroseismology of Massive Stars : Some Words of Caution

Although playing a key role in the understanding of the supernova phenomenon, the evolution of massive stars still suffers from uncertainties in their structure, even during their "quiet" main sequence phase and later on during their subgiant and helium burning phases. What is the extent of the mixed central region? In the local mixing length theory (LMLT) frame, are there structural differences using Schwarzschild or Ledoux convection criterion? Where are located the convective zone boundaries? Are there intermediate convection zones during MS and post-MS phase, and what is their extent and location? We discuss these points and show how asteroseismology could bring some light on these questions.Comment: 10 pages, 5 figures, IAU Symposium 307, New windows on massive stars: asteroseismology, interferometry, and spectropolarimetry, G. Meynet, C. Georgy, J.H. Groh & Ph. Stee, ed