Support of ASTP/KOSMOS fundulus embryo development experiment

Results from the Kosmos Biosatellite 782 flight are presented. Experiments with fish hatchlings are discussed along with postflight observation and testing. The preparation of fertilized eggs for the experiments is described

Ejection mechanisms in the sublayer of a turbulent channel

A possible model for the inception of vorticity ejections in the viscous sublayer of a turbulent rectangular channel is presented. It was shown that this part of the flow is dominated by protruding strong shear layers of z-vorticity, and it was proposed as a mechanism for their maintenance and reproduction which is essentially equivalent to that responsible for the instability of 2-D Tollmien-Schlichting waves. The efforts to isolate computationally a single structure for its study have failed up to now, since it appears that single structures decay in the absence of external forcing, but a convenient computation model was identified in the form of a long and narrow periodic computational box containing at each moment only a few structures. Further work in the identification of better reduced systems is in progress

Race and Justice in Nebraska – Why Prosecutors and Criminal Defense Lawyers Should Care

This article originally appeared in Habeas Corps, the newsletter of The Nebraska Criminal Defense Attorneys Association. Reprinted with permission. And now it\u27s just as bad far young black women or women of color as it is for men ...to have a public defender who is so unprepared, uncaring, and really, unsuitable, to stand before a judge, and then you have a prosecutor who comes in ... and they sit at their table and the snickering, the way the attitude that they go and handle a case (shows) no respect for the individual or for the system.” The above quote comes from public hearing testimony before the Nebraska Minority and Justice Task Force preceding the issuance of their final report. Similar comments were heard at a number of public hearings around the state. At first, for those of us who are prosecutors and criminal defense attorneys and members of the Task Force, such comments (as well as some of the task force findings) made us feel uncomfortable at the very least, and sometimes downright defensive. Eventually, we came to realize that, as difficult as it is to talk about race and justice in America, it is vitally important that we do so for a number of reasons. This is especially true for those of us who hold a public trust as prosecutors and those of us who are appointed to act as zealous advocates for individual clients to fulfill the promise of their constitutional right to the effective assistance of counsel. In this article, we will provide you with background on the Minority and Justice Task Force, outline some of their key findings and explain why prosecutors and criminal defense attorneys should not only care about the issues but should become active in addressing solutions to the problems

Analysis of screeching in a cold flow jet experiment

The screech phenomenon observed in a one-sixtieth scale model space shuttle test of the solid rocket booster exhaust flow noise has been investigated. A critical review is given of the cold flow test data representative of Space Shuttle launch configurations to define those parameters which contribute to screech generation. An acoustic feedback mechanism is found to be responsible for the generation of screech. A simple equation which permits prediction of screech frequency in terms of basic testing parameters such as the jet exhaust Mach number and the separating distance from nozzle exit to the surface of model launch pad is presented and is found in good agreement with the test data. Finally, techniques are recommended to eliminate or reduce the screech

High coherence hybrid superconducting qubit

We measure the coherence of a new superconducting qubit, the {\em low-impedance flux qubit}, finding $T_2^* \sim T_1 \sim 1.5\mu$s. It is a three-junction flux qubit, but the ratio of junction critical currents is chosen to make the qubit's potential have a single well form. The low impedance of its large shunting capacitance protects it from decoherence. This qubit has a moderate anharmonicity, whose sign is reversed compared with all other popular qubit designs. The qubit is capacitively coupled to a high-Q resonator in a $\lambda/2$ configuration, which permits the qubit's state to be read out dispersively

A simple all-microwave entangling gate for fixed-frequency superconducting qubits

We demonstrate an all-microwave two-qubit gate on superconducting qubits which are fixed in frequency at optimal bias points. The gate requires no additional subcircuitry and is tunable via the amplitude of microwave irradiation on one qubit at the transition frequency of the other. We use the gate to generate entangled states with a maximal extracted concurrence of 0.88 and quantum process tomography reveals a gate fidelity of 81%