Analog Gradient Search This analog phase demodulation hill-climbing technique works for clean, quasi-Gaussian couplings already near optimal alignment. However it will lock-in on local maxima and “flat spots” which occur in multimode couplings, with imperfect devices, or far from optimum alignment. Nevertheless, instrumentation based on this principle was popular, though bulky and providing too...

In this issue of Neuron, Remme and colleagues examine the biophysics of synchronization between oscillating dendrites and soma. Their findings suggest that oscillators will quickly phase-lock when weakly coupled. These findings are at odds with assumptions of an influential model of grid cell response generation and have implications for grid cell response mechanisms.

by drawing blood through a heparin lock, patients can be protected from skin damages duo to repeated needle sticks. in addition, this procedure can assist to gain more precise results in laboratory test and to prevent further complications. probably, you have ever used a heparin lock in order to infusion of medicines but, it is possible that you never use of that for blood sampling. both two pr...

We implemented two data structures in a consistency-oblivious programming (COP) style: a red black tree and a dynamic cacheoblivious B-tree. Unlike a naive transactional style, in which an operation such as an insertion is enclosed in a hardware transaction, in a COP-style there are two phases: an oblivious phase that runs with no transactions or locking, and an atomic phase that simply verifie...

2014 The pressure temperature phase diagram has been obtained in the deuterated TMATC-Zn by measuring the modulation wave vector in the range 0 to 1.8 kbar and 2014 5 to 36 °C. This diagram is a nice illustration of the devil’s staircase. It exhibits various commensurate stairs with k = 1/3,2/5 in the ferroelectric phase, 3/7 and 1/2. At high temperatures lock-in occurs at 2/5. This phase separ...

We demonstrate the phase locking of a 2.7 THz metal-metal waveguide quantum cascade laser (QCL) to an external microwave signal. The reference is the 15th harmonic, generated by a semiconductor superlattice nonlinear device, of a signal at 182 GHz, which itself is generated by a multiplier chain (x12) from a microwave synthesizer at approximately 15 GHz. Both laser and reference radiations are ...

We proposed heterodyne angle deviation interferometry (HADI) for angle deviation measurements. The phase shift of an angular sensor (which can be a metal film or a surface plasmon resonance (SPR) prism) is proportional to the deviation angle of the test beam. The method has been demonstrated in bubble and speaker’s vibration measurements in this paper. In the speaker’s vibration measurement, th...

We describe a quantitative method for measuring the phase of a propagating wave field in three dimensions by use of a scanning optical-fiber interferometer. Because phase modulation in the reference arm is exploited, this technique is insensitive to large variations in the intensity of the field being studied and is therefore highly suitable for measurement of phase within spatially confined op...

In a previous work we proposed a phase-lock structure called the time-delay digital tanlock loop (TDTL). This digital phase-locked loop (DPLL) performs nonuniform sampling and utilizes a constant time-delay unit instead of the constant 90-degrees phase-shifter used in conventional tanlock structures. The TDTL reduces the complexity of implementation and avoids many of the practical problems ass...