Adaptive Embedded LES of the NASA Hump

A scheme for adaptive embedded LES is proposed which automatically determines boundaries for LES regions in a hybrid LES-RANS computation, with the goal of minimizing the LES part of the computation for maximum accuracy with minimum cost. The model-invariant hybrid formulation enables this scheme through greater flexibility in the placement of RANS-LES transitions. An adaptive embedded large-eddy simulation is carried out for the NASA hump test case and adaptive meshing is added to show how additional adaptive features may be controlled by the adaptive hybrid scheme

Time lower bounds for nonadaptive turnstile streaming algorithms

We say a turnstile streaming algorithm is "non-adaptive" if, during updates, the memory cells written and read depend only on the index being updated and random coins tossed at the beginning of the stream (and not on the memory contents of the algorithm). Memory cells read during queries may be decided upon adaptively. All known turnstile streaming algorithms in the literature are non-adaptive. We prove the first non-trivial update time lower bounds for both randomized and deterministic turnstile streaming algorithms, which hold when the algorithms are non-adaptive. While there has been abundant success in proving space lower bounds, there have been no non-trivial update time lower bounds in the turnstile model. Our lower bounds hold against classically studied problems such as heavy hitters, point query, entropy estimation, and moment estimation. In some cases of deterministic algorithms, our lower bounds nearly match known upper bounds

Photoelectron diffraction: from phenomenological demonstration to practical tool

The potential of photoelectron diffraction—exploiting the coherent interference of directly-emitted and elastically scattered components of the photoelectron wavefield emitted from a core level of a surface atom to obtain structural information—was first appreciated in the 1970s. The first demonstrations of the effect were published towards the end of that decade, but the method has now entered the mainstream armoury of surface structure determination. This short review has two objectives: First, to outline the way that the idea emerged and the way this evolved in my own collaboration with Neville Smith and his colleagues at Bell Labs in the early years: Second, to provide some insight into the current state-of-the art in application of (scanned-energy mode) photoelectron diffraction to address two key issue in quantitative surface structure determination, namely, complexity and precision. In this regard a particularly powerful aspect of photoelectron diffraction is its elemental and chemical-state specificity

The Japanese Lawyer

I. Introduction II. Legal Education III. The National Judicial Examination IV. The Judicial Research and Training Institute V. Judiciary VI. The Public Procurators VII. Bengoshi—The Practicing Lawye

Analysis of Army Reserve Officer Training Corps Cadet Behavioral Leadership and Development

The United States Army is continually looking for ways to improve the training of its leaders. FM 22-100, Army Leadership: Be, Know, Do (1999), provides the foundation for the Army\u27s leadership training. Its goal is to train leaders who can both accomplish the mission and take care of soldiers and their families. This project investigates how individuals\u27 leadership opinions may vary according to their year in the Reserve Officer Training Corps program and also compared to non-ROTC students of similar academic standing. Does the leadership training implemented in ROTC effect change in leadership opinions from the MS III (junior) to the MSIV (senior) cadets and do these opinions coincide with the Army\u27s desires? Do the opinions stated by ROTC cadets differ from non-ROTC students? And finally, do these opinions differ by university attended? The leadership behaviors being investigated are those defined by Fleishman (1953, 1957): consideration and initiating structure. These leadership behaviors minor the Army\u27s Mission First, People Always motto. Taking care of soldiers and their families is consideration, while accomplishing the mission is initiating structure. The Leadership Opinion Questionnaire developed by Fleishman (1953), contains 40 questions (20 consideration, 20 initiating structure) measuring both elements. Both elements are independent, which means a leader can have varying levels of each (Fleishman, 1989)