N-body simulations have shown that the dynamical decay of the young (∼ 1 Myr) Orion Nebula cluster could be responsible for the loss of at least half of its initial content of OB stars. This result suggests that other young stellar systems could also lose a significant fraction of their massive stars at the very beginning of their evolution. To confirm this expectation, we used the Mid-Infrared...

Many modern weapon systems depend on Global Positioning System (GPS) to achieve midcourse or terminal accuracy requirements. This reliance on GPS navigation dictates that weapon system test facilities be equipped to create realistic GPS jamming (GPSJ) environments. The Naval Air Warfare Center Weapons Division (NAWCWPNS) at China Lake is developing a system of free-space jammers to create a rea...

We discover a new faint shell-type radio supernova remnant (SNR) G353.6-0.7 based on radio ( 1420 MHz from the Southern Galactic Plane Survey (SGPS) and 843 MHz from the Molonglo Galactic Plane Survey), infrared (8 μm from the GLIMPSE Legacy Project and 21 μm from the Midcourse Space Experiment), and X-ray (0.1 keV 2.4 keV from the ROSAT survey and 5 20 keV from the INTEGRAL survey) data. The S...

Step 1 of the United States Medical Licensing Examination has now replaced the National Board of Medical Examiners part 1 examination as the initial step in medical licensure. The new examination format places an increased emphasis on clinical vignettes to test basic physiological concepts. Suggestions from a question-writing workshop were incorporated into cardiovascular items in a midcourse p...

A near-optimal midcourse trajectory shaping guidance algorithm is proposed for both air and ballistic target engagement mission attributes for generic long range interceptor missile. This guidance methodology is based on the maximum final velocity as the objective function and maximum permissible flight altitude as the in-flight state constraint as well as the head-on orientation as the termina...

The brain’s ability to change its organization and function is necessary for normal development of the nervous system and it makes it possible to adapt to changing demands but it can also cause disorders when going awry. This property, known as neural plasticity, is only evident when induced, very much like genes. Plastic changes may be programmed and providing a “midcourse correction” during c...

There are several applications that require long wavelength, large, uniform, reproducible, low cost, low 1/f noise, low power dissipation, and radiation hard infrared (IR) focal plane arrays (FPAs). For example, the absorption lines of many gas molecules, such as ozone, water, carbon monoxide, carbon dioxide, and nitrous oxide occur in the wavelength region from 3 to 18 pm. Thus, IR imaging sys...

The evaluation of classroom-based educational interventions is fraught with tensions, the most critical of which is choosing between focusing the inquiry on measuring the effects of treatment or in proximately utilizing the data to improve practice. This paper attempted to achieve both goals through the use of intervention-oriented evaluation of a professional development program intended to di...

the guidance system. The types of steering commands vary depending on the phase of flight and the type of interceptor. For example, in the boost phase the flight control system may be designed to force the missile to track a desired flight-path angle or attitude. In the midcourse and terminal phases the system may be designed to track acceleration commands to effect an intercept of the target. ...

We analyse nine low-income and lower-middle-income countries in Africa and Asia that have implemented national health insurance reforms designed to move towards universal health coverage. Using the functions-of-health-systems framework, we describe these countries' approaches to raising prepaid revenues, pooling risk, and purchasing services. Then, using the coverage-box framework, we assess th...