Best Practices in Peer Learning Sessions: Advice from Peer Leaders

From the Washington University Office of Undergraduate Research Digest (WUURD), Vol. 12, 05-01-2017. Published by the Office of Undergraduate Research. Joy Zalis Kiefer, Director of Undergraduate Research and Associate Dean in the College of Arts & Sciences; Lindsey Paunovich, Editor; Helen Human, Programs Manager and Assistant Dean in the College of Arts and Sciences Mentors: Regina Frey, Michelle Repice, and Gabriela Szteinber

F-8C digital CCV flight control laws

A set of digital flight control laws were designed for the NASA F-8C digital fly-by-wire aircraft. The control laws emphasize Control Configured Vehicle (CCV) benefits. Specific pitch axis objectives were improved handling qualities, angle-of-attack limiting, gust alleviation, drag reduction in steady and maneuvering flight, and a capability to fly with reduced static stability. The lateral-directional design objectives were improved Dutch roll damping and turn coordination over a wide range in angle-of-attack. An overall program objective was to explore the use of modern control design methodilogy to achieve these specific CCV benefits. Tests for verifying system integrity, an experimental design for handling qualities evaluation, and recommended flight test investigations were specified

Production of Neurospora mycelial protoplasts

Production of myceliol protoplos

Rancang Bangun Alat Deteksi Uang Kertas Palsu dengan Metode Template Matching Menggunakan Raspberry Pi

Cara manual yang digunakan untuk mendeteksi keaslian uang kertas memiliki banyak kelemahan. Oleh karena itu, pada penelitian ini dirancang sebuah alat yang dapat mengidentifikasi keaslian uang kertas tanpa mengandalkan penglihatan manusia. Sistem pada alat ini menggunakan mini PC Raspberry Pi, lampu ultraviolet, kamera dan metode Template Matching. Template Matching adalah sebuah teknik pada pengolahan citra digital untuk menemukan bagian-bagian kecil dari gambar yang cocok dengan gambar template. Lampu ultraviolet digunakan untuk memunculkan gambar Invisible Ink dari objek uang kertas pecahan 50.000. Kamera digunakan untuk menangkap gambar uang kertas setelah disinari lampu ultraviolet. Gambar tersebut kemudian diproses di Raspberry Pi menggunakan library OpenCV untuk mendapatkan nilai hasil kemiripan dengan gambar. Keluaran dari sistem ini berupa suara yang memberikan informasi tentang asli atau tidaknya uang kertas tersebut. Dari 16 kali percobaan dengan posisi kamera tetap dan berjarak + 8 cm dari uang, terdapat 2 kali kegagalan yang disebabkan tipisnya perbedaan warna dasar uang dengan gambar template, sehingga didapatkan tingkat keberhasilan sebesar 87,5%. Sedangkan pada jarak + 7 cm dan +6 cm dari uang kertas sistem tidak dapat mendeteksi keaslian uang kertas tersebut. Dari 25 kali percobaan berdasarkan posisi/kemiringan uang kertas didapatkan tingkat 36%. Oleh karena itu Template Matching sangat dipengaruhi oleh template, tresholding, posisi objek, serta posisi/jarak kamera

Alternative Pasture Development System and Breeding Weight for Beef Heifers

Proper development of replacement beef heifers is critical and needs to be accomplished at lower costs without sacrificing reproductive performance. The current recommendations indicate heifers should reach approximately 65% of mature body weight (MBW) at breeding for successful reproduction (Patterson et al. 1992; NRC 1996). Meeting heifer maintenance and gestation nutrient requirements are getting more economically challenged for beef producers in western Canada. Therefore, producers are moving from drylot development systems where cattle are housed and fed in pens to the adoption of extensive grazing systems (Kelln et al. 2011) in field paddocks. Limited research has been conducted to determine whether inherent differences in development systems affect reproductive efficiency of heifers. The most commonly used extensive dormant season grazing system in western Canada is pasture grazing forage bales in field paddocks (Kelln et al. 2011). The objectives of this study were to determine: (1) the effects of developing heifers to a pre-breeding targeted body weight (BW) of either 55 or 62% MBW on dry matter intake (DMI), nutrient intake and reproductive efficiency; and (2) the effects of developing heifers in either field pasture paddocks (PG) or conventional drylot pens (DL) on development system cost over 2 seasons (2010-2012)

Multiple packets of neutral molecules revolving for over a mile

The level of control that one has over neutral molecules in beams dictates their possible applications. Here we experimentally demonstrate that state-selected, neutral molecules can be kept together in a few mm long packet for a distance of over one mile. This is accomplished in a circular arrangement of 40 straight electrostatic hexapoles through which the molecules propagate over 1000 times. Up to 19 packets of molecules have simultaneously been stored in this ring structure. This brings the realization of a molecular low-energy collider within reach