Redundant RF system for space application

An S-band radio frequency subsystem is described including two transmitters, two receivers and two antennas. The subsystem is capable of connecting either transmitter or receiver to either antenna while permitting simultaneous operation of a transmitter and a receiver. Circulator switches provide selection of a specific transmitter and receiver for connection to either a high gain or low gain antenna. Transmitter output filters, receiver input filters, and diplexers are combined to prevent radiation or coupling or unwanted transmitter and receiver signals and to provide isolation, permitting simultaneous operation of the transmitter and receiver. The filter elements are designed of constant diameter coaxial elements to meet demanding rejection, loss, power-handling and environmental characteristics

Microwave Electronics

Contains reports on two research projects.United States ArmyUnited States Navy, Office of Naval Research (Contract Nonr-1841(49))Lincoln Laboratory (Purchase Order DDL B-00306)United States Air Force (Contract AF19(604)-7400)United States Nav

Microwave Electronics

Contains reports on two research projects.United States Navy, Office of Naval Research (Contract Nonr-1841(49))Lincoln Laboratory (Purchase Order DDL B-00337)United States ArmyUnited States NavyUnited States Air Force (Contract AF19(604)-7400

Discussant\u27s response to Expert systems and AI-based decision support in auditing: Progress and perspectives

https://egrove.olemiss.edu/dl_proceedings/1084/thumbnail.jp

Microwave Electronics

Contains reports on two research projects.U. S. ArmyLincoln Laboratory, Purchase Order DDL B-00306U. S. Navy (Office of Naval Research) under Contract Nonr-1841(49)U. S. Air Force under Air Force Contract AF19(604)-5200U. S. Nav

Microwave Electronics

Contains reports on four research projects.Lincoln Laboratory (Purchase Order DDL B-00306)United States Navy, Office of Naval Research (Contract Nonr-1841(49))United States Air Force (Contract AF19(604)-5200)United States NavyUnited States Arm

Plasma Magnetohydrodynamics and Energy Conversion

Contains reports on four research projects.National Science Foundation (Grant G-24073)United States Air Force, Aeronautical Systems Division (Contract AF33(615)-1083

Would the Singaporean approach to whistleblower protection laws work in Australia?

Federal, State and Territory Governments have enacted a range of statutory laws to protect whistleblowers. The aim of these laws is to provide protection to those individuals in the private and public sector who report unlawful acts made by organizations, contractors and their employees. Provided the disclosure is made in ‘good faith’, the person making the disclosure is afforded protection from being sued for defamation, breach of confidence under their employment contract or for breach of their common law fiduciary duty. This paper has two purposes; first, the objective of the Australian Government in introducing new whistleblowing laws that extend protection to the consumer protection area and taxation, namely the Treasury Laws Amendment (Whistleblowers) Bill 2017 - Exposure Draft is examined. Secondly, an alternative approach to whistleblowing is considered. By way of contrast, a Singaporean approach which heavily relies on self-reporting and an internalinvestigation involving an Audit Committee of the corporation is critically examined toassess the potential for introducing a self-reporting approach in Australia. Our analysis finds that in Singapore, culture plays a role in the attitude of the Singaporean employee contemplating reporting unlawful activity and, more importantly in how the disclosure is treated by the corporation or public institution. This paper adds to the literature which examines alternative approaches and attitudes to whistleblowing by providing a comparative discussion of the Australian and Singaporean legal approaches

Tryptophan metabolism in the central nervous system: medical implications

The metabolism of the amino acid L-tryptophan is a highly regulated physiological process leading to the generation of several neuroactive compounds within the central nervous system. These include the aminergic neurotransmitter serotonin (5-hydroxytryptamine, 5-HT), products of the kynurenine pathway of tryptophan metabolism (including 3-hydroxykynurenine, 3-hydroxyanthranilic acid, quinolinic acid and kynurenic acid), the neurohormone melatonin, several neuroactive kynuramine metabolites of melatonin, and the trace amine tryptamine. The integral role of central serotonergic systems in the modulation of physiology and behaviour has been well documented since the first description of serotonergic neurons in the brain some 40 years ago. However, while the significance of the peripheral kynurenine pathway of tryptophan metabolism has also been recognised for several decades, it has only recently been appreciated that the synthesis of kynurenines within the central nervous system has important consequences for physiology and behaviour. Altered kynurenine metabolism has been implicated in the pathophysiology of conditions such as acquired immunodeficiency syndrome (AIDS)-related dementia, Huntington's disease and Alzheimer's disease. In this review we discuss the molecular mechanisms involved in regulating the metabolism of tryptophan and consider the medical implications associated with dysregulation of both serotonergic and kynurenine pathways of tryptophan metabolism