Small digital recording head has parallel bit channels, minimizes cross talk

A small digital recording head consists of closely spaced parallel wires, imbedded in a ferrite block to concentrate the magnetic flux. Parallel-recorded information bits are converted into serial bits on moving magnetic tape and cross talk is suppressed

Saturn S-2 quality assurance techniques: Nondestructive testing processes. Volume 1: Requirements and procedures

The methods and procedures used to perform nondestructive testing inspections of the Saturn S-2 liquid hydrogen and liquid oxygen tank weldments during fabrication and after proof testing are described to document special skills developed during the program. All post-test inspection requirements are outlined including radiographic inspections procedures

Use of Anticipatory Guidelines in Late Infants and Toddlers 12 to 24 Months in Primary Care

Anticipatory guidance is a well-known and utilized method that has been implemented in a majority of pediatric primary care offices. As the need for efficiency grows and increasing patient volumes climb, there is a growing need for strategies to provide this information effectively and efficiently. Prior evidence can be utilized to identify the most critical knowledge caregivers and parents will require. Our findings indicate safety, communication, nutrition, social development, and behavior as cornerstone topics for anticipatory guidance. To increase the volume of education provided to parents and caregivers, alternate methods beyond verbal discussion could be used. After gathering scientific literature on the foundational topics of anticipatory guidance we created handouts and educational videos. The videos explored communication, potty training, immunizations, drowning prevention, burn prevention, medication safety, and fall prevention. These were implemented at a rural pediatric clinic where they were met with positive feedback. Participants endorsed an array of topics (i.e., dental, nutritional, sleep, and potty training) as very satisfactory additions to their knowledge base. A review of the literature concludes that education and anticipatory guidance are foundational for preventing childhood illness and injury

Battle Echoes Never Fade: Soldiers\u27 Trauma at the End of Life

Soldiers suffer moral injuries when wartime experiences go against their own moral compass, such as killing innocent civilians or mutilating the bodies of enemies. Many soldiers bury the shame and guilt leftover from battle for years or decades, but these memories can surface unbidden as veterans near death

The project scientist's role in scientific spacecraft project management

The project scientists is in a position which rates very high in terms of behavioral study recommendations. His influence over objectives is generally considered to be important. He is highly autonomous in a moderately coordinated environment. He has diverse managerial and technical functions and the performance of these functions require him to grow beyond his role as an experimenter. However, the position within the line organization for those interviewed is also very stimulating, rating almost as high by the same criteria. The role of project scientist may not be the dominant means of professional growth for the experienced scientific investigators. The influence which the project scientist exerts on the project and the stimulation of that position for him are determined largely by his position outside the defined project scientist role. The role of the project scientist is changing because the environment of those who become project scientists is changing

Potential repellency of cedarwood oil from a novel extraction method to stored product insects

Producers lose 10-30% of crops during storage, processing, and marketing after harvest each year to stored product insects (1,2). Globally, there has been a rise in insecticide resistance to phosphine, the most common fumigant for these pests (3). As a result, producers need to diversify post-harvest IPM methods to preserve existing tools. One alternative strategy is push-pull, whereby a repellent is used to “push” an insect away from the commodity of interest, while also simultaneously “pulling” the insects to an alternate location away from the commodity using an attractant (4)(Fig. 1). This system notably requires a long-distance repellent. One potential repellent includes cedarwood oil, which has shown repellency to termites and ants (5,6). A novel extraction process for this compound has been developed, which leaves many of its main constituents intact (7). However, to date, this compound has never been assessed for repellency to post-harvest insects

Perceptions of Tennessee Public School Principals Concerning Their Managerial Authority Under Collective Negotiations

The problem of this study was to determine if collective negotiations had restricted the perceived managerial authority of Tennessee\u27s public school principals within selected demographic variables. Fourteen demographic variables (the independent variables) were selected for the study. Pauline\u27s Principals On-Job Discretion Scale (the dependent variable) developed and validated by Robert A. Pauline was selected as the appropriate instrument for use in this study. The instrument listed ten responsibilities of public school principals which might or might not be registered by the terms and conditions of teachers\u27 negotiated agreements with school boards. The principals marked the instrument as to how they perceived their managerial authority (discretion) under collective negotiations. The sample drawn included 315 of the 1260 public school principals who were under collective negotiations in the seventy-eight school systems in Tennessee during 1985-86. Respondents used in the study included 242 principals--19.21 percent of all Tennessee public school principals under collective negotiations. The statistical analysis of the data indicated there were significant differences in four of the fourteen null hypotheses. The significant differences found were: (1) The younger age group of principals perceived themselves as having less managerial authority than the older groups of principals. (2) Those principals who had been principals for five or fewer years perceived themselves a having less managerial authority than those principals who had been principals for more than ten years. (3) Those principals in city/town/special school systems perceived themselves as having less managerial authority than those principals in county school systems. (4) High school principals perceived themselves as having more managerial authority than those principals in elementary, junior high/middle/intermediate, and other schools. Although the findings indicated that Tennessee\u27s public school principals did not perceive themselves as having complete discretion in their managerial authority under collective negotiations, the principals did perceive themselves as having considerable discretion in managing their schools under the teachers\u27 negotiated agreements with school boards. Recommendations were indicated for future research

Encaminhamento por Hardware em Redes Definidas por Software: Avaliação Experimental Utilizando NETFPGA

As redes de computadores se tornaram parte essencial da infraestrutura de nossa sociedade, no entanto, o projeto inicial das redes tradicionais não poderia atender os requisitos de todas essas aplicações, pois muitas não foram sequer imaginadas. Como resultado, tem-se um ambiente de redes com pouco suporte e flexibilidade para anteder às novas exigências. Nesse contexto, surgiu, então, um conceito promissor de redes programáveis denominado Redes Definidas por Software (SDN Software Defined Network). SDN separa o plano de controle do plano de dados permitindo aos desenvolvedores programar a rede de acordo com as necessidades de suas aplicações. Além disso, tornou possível a implementação e testes em ambientes reais, inovações tecnológicas para o ambiente de redes sem, para isso, depender dos fabricantes de equipamentos. Este trabalho propõe a utilização de NetFPGAs como ferramenta de encaminhamento em SDN, controlada por um controlador OpenFlow a fim de diminuir o caminho percorrido por um pacote de sua origem ao seu destino. Além disso, propõese utilizar a NetFPGA com OpenFlow para uma implementação de múltiplos caminhos com balanceamento de cargas. Será avaliada, ainda, a influência de tabelas de fluxos na comutação de pacotes comparando um protocolo que utiliza tabelas para encaminhamento (OpenFlow) com um que não utiliza tabelas para este fim (KeyFlow)