Frequency diverse array (FDA) radar applies a tiny frequency offset across its adjacent transmitting elements to generate range-angle-dependent beampattern. The increased degrees-of-freedom (DOFs) in range domain can help improve the performance of target detection, localization, and clutter suppression. Passive utilizes uncontrollable external signal as illuminator, which makes it difficult ap...

Marijuana use pervades every facet of our daily life. However, despite the growing awareness and mounting fear that marijuana is having a serious impact on driving performance and highway safety, routine analysis for the detection of marijuana use is minimal. Part of this reluctance is due to a lack of understanding about the assays, what the assays can and can not do, and what the results mean...

The authors propose a method of controlling the position of a manipulator with passive joints which have holding brakes instead of actuators. In this method, the coupling characteristics of manipulator dynamics are used, and no additional mechanisms are required. In this paper, the effectiveness of the method is verified by experiments using a prototype manipulator. The prototype is a two degre...

The idea of passive euthanasia has recently been attacked in a particularly clear and explicit way by an ‘‘Ethics Task Force’’ established by the European Association of Palliative Care (EAPC) in February 2001. It claims that the expression ‘‘passive euthanasia’’ is a contradiction in terms and hence that there can be no such thing. This paper critically assesses the main arguments for the Task...

In this paper Islanding detection methods for distributed resources are reviewed. The mainly used islanding detection techniques may be classified as active and passive techniques. Passive techniques don’t perturb the system but they have larger nondetection zones, whereas active techniques have smaller nondetection zones but they perturb the system. In this paper a new hybrid method is propose...

Maxwell’s equations are cast in the form of the Schrödinger equation. The Lanczos propagation method is used in combination with the fast Fourier pseudospectral method to solve the initial value problem. As a result, a time-domain, unconditionally stable, and highly efficient numerical algorithm is obtained for the propagation and scattering of broad-band electromagnetic pulses in dispersive an...

For decades, the defense business has been plagued by not having a reliable, deterministic method to know when the Kalman filter solution for passive ranging application is reliable for use by the fighter pilot. This has made it hard to accurately assess when the ranging solution can be used for situation awareness and weapons use. To date, we have used ad hoc rules-of-thumb to assess when we t...