Considering the network structure is one of the new approaches in studying stochastic PERT networks (SPN). In this paper, planar networks are studied as a special class of networks. Two structural reducible mechanisms titled arc contraction and deletion are developed to convert any planar network to a series-parallel network structure.&#10In series-parallel SPN, the completion time distribution...

considering the network structure is one of the new approaches in studying stochastic pert networks (spn). in this paper, planar networks are studied as a special class of networks. two structural reducible mechanisms titled arc contraction and deletion are developed to convert any planar network to a series-parallel network structure. in series-parallel spn, the completion time distribution fu...

In this paper, an efficient numerical scheme based on uniform Haar wavelets is used to solve the non-planar Burgers equation. The quasilinearization technique is used to conveniently handle the nonlinear terms in the non-planar Burgers equation. The basic idea of Haar wavelet collocation method is to convert the partial differential equation into a system of algebraic equations that involves a ...

We study correlation functions in the complex fermion SYK model. focus, specifically, on h=2 mode which explicitly breaks conformal invariance and exhibits chaotic behaviour. numerically explore a six-point OTOC, with two three real-time folds, respectively. While our approach is expected to yield an early-time growth, we nevertheless observe near-maximal value. Following program of Gross-Rosen...

In this article, based on two case studies, we discuss the role of abnormal geodesics in planar Zermelo navigation problems. Such curves are limit accessibility set, domain where current is strong. The problem set frame geometric time optimal control, control heading angle ship and context, shown to separate minimal from maximal both small-time minimizing maximizing. We describe balls. For bigg...

We revisit spin-orbit coupling in a plasmonic Berry metasurface composed of rotated nanoapertures, which is known to imprint robust far-field polarization response. present scattering formalism that shows how spin-momentum locking emerges from the geometry unit cell without requiring global rotation symmetries. find and confirm with Mueller polarimetry measurements an approximate symmetry. The ...

This paper focuses on planar manipulators built upon stacking a series of tensegrity X-joints. The are actuated with four tendons, have different numbers modules, or without offsets. objective this work is to study the influence offsets and number modules size wrench-feasible workspace (WFW). comparison analysis conducted basis equal manipulator height, width mass maximal actuation forces. spri...

Introduction: Hemangiomas are the most frequent benign tumors of the liver and detecting them from metastasis or other malignant hepatic tumors is of outmost importance. 99mTc- RBC scan is highly specific and is the method of choice for this differentiation. This scintigraphy is performed in Planar and SPECT modes. These two procedures are in agreement most of the times, however since SPE...

UNLABELLED The aim of this study was to develop a scintigraphic test to measure gastric emptying and accommodation simultaneously. METHODS Gastric emptying and accommodation were measured in healthy subjects. To determine gastric accommodation, the stomach was imaged with SPECT 20 min after intravenous administration of 185 MBq (5 mCi) (99m)Tc-pertechnetate. After ingestion of 11 MBq (300 mic...