Home Economics in New Zealand

A friend in the States wrote me, It seems peculiar for you to be attending afternoon teas and luncheons in New Zealand for I\u27ve always thought of New Zealand as being so far at the end of the world as to be only partly civilized. Before leaving home I heard my father say he thought I was going to New Zealand to teach the cannibals how to prepare their food! I assure you we are very much civilized h er e. I went to a dance last evening in a sleeveless evening gown purchased on Fifth Avenue and I was not in the least conspicuous

No Furnaces in New Zealand Homes

These Americans do keep their houses hot; is what my friends from New Zealand say, and I confess I have said it a good many times since I returned the first of October. After living in the anything-but-hot houses in New Zealand for three years, I am not sure but I can sympathize with them on their estimate of our buildings

Teaching Reading To Slow Learning Children In The Wilmer Hutchins High School Hutchins, Texas

Teachers find many books and articles written on teaching reading to slow learning children. No other educational skill has received so much emphasis or has been the subject of such a great variety of investigations. There is, however, a volume of books dealing with the reading of children but a scarcity of books dealing directly with the reading of children who are slow learners. Yet, in every classroom, there is a little group of slow learners , that is, children who do not have the capacity to keep up with their classmates and whose problems must be met in some way by their teachers. Slow reading may then have one or more of three main causes. It may be due to inefficient eye movements, excessive vocalizations, or word-for-word reading. These three causes are, of course, interrelated. A child who reads every word as a unit must have many fixations and has time to vocalize if he wishes. Excess vocalization leads to many fixations, and the pupil tends to read syllable by syllable which is even worse than the word-for-word. The child with too many fixations usually vocalizes, and the largest unit he sees at once is a word. In general, the three habits go together, and it is often impossible to tell for any given child which habit comes first, or if all three developed together. The typical slow reader at Wilmer Hutchins High School is not the victim of a single bad habit but the possessor of an unfortunate system of habits, each of which reinforces the other. The whole performance is inefficient because it is clumsy and time-consuming. Even if a child becomes familiar with the techniques, he never gets the degree of comprehension for which his efforts should be rewarded because his technique breaks up reading matter into tiny and meaningless units. Regardless of the method used in teaching slow learners, there are certain matters in which special care must be taken by teachers of slow learning children

Investigation of Anti-Phase Asymmetric Quiet Rotor Technology

The future of urban air mobility has a well-known tall pole challenge in the form of community acceptance which largely comes from the noise. This paper presents a proposed anti-phase rotor technology that could reduce noise sources such as blade vortex interaction noise. The anti-phase rotor technology includes a rotor design with various anti-phase alternating trailing edge patterns and a rotor design with an asymmetric blade tip. Four small-scale anti-phase rotors are fabricated by 3D printing for acoustic measurements conducted in a low-speed open-circuit wind tunnel to assess the effectiveness of the proposed anti-phase rotor technology. Preliminary test results appear to be promising and indicate that the anti-phase rotor designs could be a practical means of reducing blade vortex interactions and noise. The four tested anti-phase rotor designs have peak acoustic performance depending on the RPM and thrust which suggests improved performance through design optimization could be achieved for specific mission requirements

Work function determination of promising electrode materials for thermionic energy converters

The work function determinations of candidate materials for low temperature (1400 K) thermionics through vacuum emission tests are discussed. Two systems, a vacuum emission test vehicle and a thermionic emission microscope are used for emission measurements. Some nickel and cobalt based super alloys were preliminarily examined. High temperature physical properties and corrosion behavior of some super alloy candidates are presented. The corrosion behavior of sodium is of particular interest since topping cycles might use sodium heat transfer loops. A Marchuk tube was designed for plasma discharge studies with the carbide and possibly some super alloy samples. A series of metal carbides and other alloys were fabricated and tested in a special high temperature mass spectrometer. This information coupled with work function determinations was evaluated in an attempt to learn how electron bonding occurs in transition alloys

Low-energy fusion caused by an interference

Fusion of two deuterons of room temperature energy is studied. The nuclei are in vacuum with no connection to any external source (electric or magnetic field, illumination, surrounding matter, traps, etc.) which may accelerate them. The energy of the two nuclei is conserved and remains small during the motion through the Coulomb barrier. The penetration through this barrier, which is the main obstacle for low-energy fusion, strongly depends on a form of the incident flux on the Coulomb center at large distances from it. In contrast to the usual scattering, the incident wave is not a single plane wave but the certain superposition of plane waves of the same energy and various directions, for example, a convergent conical wave. As a result of interference, the wave function close to the Coulomb center is determined by a cusp caustic which is probed by de Broglie waves. The particle flux gets away from the cusp and moves to the Coulomb center providing a not small probability of fusion (cusp driven tunneling). Getting away from a caustic cusp also occurs in optics and acoustics

The Iowa Homemaker vol.4, no.9

Table of Contents Creamy Candles for Christmas by Beth Bailey McLean, page 3 The Home Guide by Dorothy G. Miller, page 4 Christmas Desserts by Adele Herbst, page 5 A Project in Homemaking by Elizabeth Storms Ferguson, page 6 Let’s Have a Christmas Party by Ann Leichleiter and Marvel Secor, page 6 Home Economics in New Zealand by Lillian B. Storms, page 7 The Christmas Bird by Grace Heidbreder, page 8 Helps from Our Extension Office by Viola Jammer, page 8 Who’s There and Where by Pearl Harris, page 9 Editorial, page 10 The Work of the Juvenile Court, page 11 The Eternal Question, page 1

UNMANNED UNDERWATER VEHICLE MISSION SYSTEMS ENGINEERING PRODUCT REUSE RETURN ON INVESTMENT

Unmanned Underwater Vehicles (UUVs) accomplish a wide spectrum of missions ranging from generic to extremely specific. Although not all UUVs can accomplish all missions, there is significant replication of the requirements and the systems across the family of UUVs. The design process for UUVs balances operational requirements, design feasibility, expected performance, schedule, budget, and ultimate system and life-cycle costs. The U.S. Department of Defense does not have an established process for developing UUV Systems Engineering (SE) requirements. This results in duplicative development efforts adding unnecessary costs to UUV programs. This paper investigates the SE requirements and interfaces across various UUV mission spaces to establish complexity and reuse weights. A Constructive SE Cost Model (COSYSMO) is applied to determine the cost advantage to reuse SE requirements for UUV assets across different mission spaces to determine an overall SE effort. Requirements from the baseline mission are then compared with requirements from eight other missions, and the efforts compared to determine a return on investment (ROI) for using previous missions as a baseline. Utilizing the resulting UUV requirement cost versus ROI can serve as a starting point for future UUV program concept design.Civilian, Department of the NavyCivilian, Department of the NavyCivilian, Department of the NavyCivilian, Department of the NavyCivilian, Department of the NavyApproved for public release. Distribution is unlimited

Investigation of Tractor Base Bleeding for Heavy Vehicle Aerodynamic Drag Reduction

One of the main contributors to the aerodynamic drag of a heavy vehicle is tractor-trailer gap drag, which arises when the vehicle operates within a crosswind. Under this operating condition, freestream flow is entrained into the tractor-trailer gap, imparting a momentum exchange to the vehicle and subsequently increasing the aerodynamic drag. While a number of add-on devices, including side extenders, splitter plates, vortex stabilizers, and gap sealers, have been previously tested to alleviate this source of drag, side extenders remain the primary add-on device of choice for reducing tractor-trailer gap drag. However, side extenders are not without maintenance and operational issues. When a heavy vehicle pivots sharply with respect to the trailer, as can occur during loading or unloading operations, the side extenders can become crushed against the trailer. Consequently, fleet operators are forced to incur additional costs to cover the repair or replacement of the damaged side extenders. This issue can be overcome by either shortening the side extenders or by devising an alternative drag reduction concept that can perform just as effectively as side extenders. To explore such a concept, we investigate tractor base bleeding as a means of reducing gap drag. Wind tunnel measurements are made on a 1:20 scale heavy vehicle model at a vehicle width-based Reynolds number of 420,000. The tractor bleeding flow, which is delivered through a porous material embedded within the tractor base, is introduced into the tractor-trailer gap at bleeding coefficients ranging from 0.0-0.018. To determine the performance of tractor base bleeding under more realistic operating conditions, computational fluid dynamics simulations are performed on a full-scale heavy vehicle within a crosswind for bleeding coefficients ranging from 0.0-0.13