dorey sean (8 Ergebnisse)

Zustand: New. In.

Zustand: New. In.

Zustand: New. KlappentextrnrnElectromagnetic material characterization is the process of determining the complex permittivity and permeability of a material. A new waveguide material measurement technique is developed to reduce test sample size requirements f.

Taschenbuch. Zustand: Neu. Neuware - A risk-driven contract structure is proposed to enhance the cost realism of competitive proposals for the Engineering and Manufacturing Development (EMD) phase of the acquisition lifecycle. An economic theory framework is employed to discuss how the cost-plus contracts typically used during this phase have inadvertently motivated contractors to provide optimistic cost estimates in an attempt to win competitive source selections. By directly mapping probabilistic cost estimates to profit distributions, risk-driven contracts offer a structured method to impose more cost risk sharing on contractors during EMD. Holding contractors accountable for their cost estimates and cost performance should enhance the realism of their cost proposals and ultimately reduce the cost growth that continues to plague the defense acquisition system.

Taschenbuch. Zustand: Neu. Neuware - Electromagnetic material characterization is the process of determining the complex permittivity and permeability of a material. A new waveguide material measurement technique is developed to reduce test sample size requirements for low-frequency applications. Specifically, a waveguide sample holder having a reduced aperture is utilized to decrease the time and cost spent producing large precision test samples. This type of sample holder causes a disruption in the waveguide-wall surface currents that results in the excitation of higher-order modes. This thesis will demonstrate how these higher-order modes can be accommodated using a modal-analysis technique, thus resulting in the ability to measure smaller samples mounted in large waveguides and still determine the constitutive parameters of the materials at the desired frequencies.

Buch. Zustand: Neu. Neuware.

Zustand: New. KlappentextrnrnA risk-driven contract structure is proposed to enhance the cost realism of competitive proposals for the Engineering and Manufacturing Development (EMD) phase of the acquisition lifecycle. An economic theory framework is employed.

Taschenbuch. Zustand: Neu. Neuware - A risk-driven contract structure is proposed to enhance the cost realism of competitive proposals for the Engineering and Manufacturing Development (EMD) phase of the acquisition lifecycle. An economic theory framework is employed to discuss how the cost-plus contracts typically used during this phase have inadvertently motivated contractors to provide optimistic cost estimates in an attempt to win competitive source selections. By directly mapping probabilistic cost estimates to profit distributions, risk-driven contracts offer a structured method to impose more cost risk sharing on contractors during EMD. Holding contractors accountable for their cost estimates and cost performance should enhance the realism of their cost proposals and ultimately reduce the cost growth that continues to plague the defense acquisition system.