Numerical and Experimental Investigation of Dam-Break Wave on a Single Building Situated Downstream

Dam-break flow may cause severe damages on land and population locateddownstream due to flush flooding. In addition to the complexity inherent in dam break flow,existence of buildings changes the rapidly varying flow pattern downstream making theproblem more complex. The way the buildings are oriented and clustered has a great influenceon water depths and velocities of the dam-break flow. To understand the phenomena better, inthis study, the flow around a single building located vertically and excentred with respect tothe main flow direction are investigated experimentally and numerically. The wavepropagation and its interaction with the building was observed using high speed camera andobtained results were compared with FLOW-3D numerical model which uses 3D RANSequations utilizing k - turbulence model. The results were in good agreement

Class‐wise two‐dimensional PCA method for face recognition

Interests in biometric identification systems have led to many face recognition task‐oriented studies. These studies often address the detection of face images taken from a camera and the recognition of faces via extracted meaningful features. To meet the requirement of defining data with fewer features, principal component analysis (PCA)‐based techniques are widely used due to their efficiency and simplicity. There is a remarkable interest in the used efficiency of PCA by extending this traditional technique with various aspects. From this viewpoint, this study is specifically focused on the PCA‐based face recognition techniques. By enhancing the methods in the reviewed studies, a novel class‐wise two‐dimensional PCA‐based face recognition algorithm is presented in this study. Unlike the traditional method, this method generates more than one subspace considering within‐class scattering. A system based on the presented approach can successively detect and recognise faces in not only images but also in video files. In addition, analyses were conducted to evaluate the efficiency of the proposed algorithm and its extension comparing with other addressed PCA‐based methods. On the basis of the experimental results, it is clear to say that the presented approach and its extension are superior to the compared PCA‐based algorithms

Trigger wrist and carpal tunnel syndrome caused by hand intramuscular intrasynovial angiofibrolipoma: A rare case report

Trigger wrist is a clinical entity characterized by triggering or the crackling of the wrist. Here, a case is reported of intrasynovial angiofibrolipoma that caused trigger wrist and carpal tunnel syndrome. This is the only case report where trigger wrist and carpal tunnel syndrome caused by the intrasynovial angiofibrolipoma were developed simultaneously. it is believed that that adhesive tenosynovitis developing in the tendons may have contributed to the triggering and carpal tunnel syndrome in the wrist as a result of inflammation occuring as a consequence of intrasynovial angiofibrolipoma. [Hand Microsurg 2016; 5(2.000): 107-109

Trigger wrist and carpal tunnel syndrome caused by hand intramuscular intrasynovial angiofibrolipoma: A rare case report

Trigger wrist is a clinical entity characterized by triggering or the crackling of the wrist. Here, a case is reported of intrasynovial angiofibrolipoma that caused trigger wrist and carpal tunnel syndrome. This is the only case report where trigger wrist and carpal tunnel syndrome caused by the intrasynovial angiofibrolipoma were developed simultaneously. it is believed that that adhesive tenosynovitis developing in the tendons may have contributed to the triggering and carpal tunnel syndrome in the wrist as a result of inflammation occuring as a consequence of intrasynovial angiofibrolipoma. [Hand Microsurg 2016; 5(2.000): 107-109

A Comparison of Intravenous Levetiracetam and Valproate for the Treatment of Refractory Status Epilepticus in Children

Because of the lack of studies comparing the efficacy and safety of levetiracetam and valproate before the induction of general anesthesia in the treatment of convulsive refractory status epilepticus in children, we aimed to compare the effectiveness of these antiepileptic drugs in patients with convulsive status epilepticus admitted to the Pediatric Intensive Care Unit between 2011 and 2014. Forty-six (59%) of the 78 patients received levetiracetam, and 32 (41%) received valproate for the treatment of refractory status epilepticus. The response rate was not significantly different between the 2 groups. Although no adverse event was noted in patients who received levetiracetam, 4 (12.5%) patients in the valproate group experienced liver dysfunction (P = .025). According to our results, levetiracetam and valproate may be used in the treatment of refractory status epilepticus before the induction of general anesthesia. Levetiracetam appears as effective as valproate, and also safer

1-((E)-{(1R,2R)-2-[(E)-(2-hydroxy-1-naphthyl)methyleneamino]cyclohexyl}iminiomethyl)naphthalen-2-o late : a Schiff base compound having both OH and NH character

WOS: 000245469800022PubMed ID: 17413230The title Schiff base compound, C28H26N2O2, possesses both OH and NH tautomeric character in its molecular structure. While the OH side of the compound is described as an intermediate state, its NH side adopts a predominantly zwitterionic form. The molecular structure of the compound is stabilized by both N+ - H center dot center dot center dot O- and O - H center dot center dot center dot N intramolecular hydrogen bonds. There are two weak C - H center dot center dot center dot O hydrogen bonds leading to polymeric chains of topology C(5) and C(13) running along the b axis of the unit cell. In addition, intermolecular C - H center dot center dot center dot pi interactions serve to stabilize the extended structure

Experimental and Numerical Investigation of 3D Dam-Break Wave Propagation in an Enclosed Domain with Dry and Wet Bottom

Dam-break flood waves represent a severe threat to people and properties located in downstream regions. Although dam failure has been among the main subjects investigated in academia, little effort has been made toward investigating wave propagation under the influence of tailwater depth. This work presents three-dimensional (3D) numerical simulations of laboratory experiments of dam-breaks with tailwater performed at the Laboratory of Hydraulics of Iskenderun Technical University, Turkey. The dam-break wave was generated by the instantaneous removal of a sluice gate positioned at the center of a transversal wall forming the reservoir. Specifically, in order to understand the influence of tailwater level on wave propagation, three tests were conducted under the conditions of dry and wet downstream bottom with two different tailwater depths, respectively. The present research analyzes the propagation of the positive and negative wave originated by the dam-break, as well as the wave reflection against the channel’s downstream closed boundary. Digital image processing was used to track water surface patterns, and ultrasonic sensors were positioned at five different locations along the channel in order to obtain water stage hydrographs. Laboratory measurements were compared against the numerical results obtained through FLOW-3D commercial software, solving the 3D Reynolds-Averaged Navier–Stokes (RANS) with the k-# turbulence model for closure, and ShallowWater Equations (SWEs). The comparison achieved a reasonable agreement with both numerical models, although the RANS showed in general, as expected, a better performance

Fast multiplier generator for FPGAs with LUT based partial product generation and column/row compression

We present a new parallel integer multiplier generator for FPGAs. It combines (i) a new Generalized Parallel Counter (GPC) grouping algorithm for column compression with (ii) a LUT based partial product generation, is (iii) unique as it automatically generates placement pragmas, (iv) uses a ternary adder as a final adder to exploit FPGA's internal carry-chains, and (v) employs a novel GPC based row compression, which aims to reduce the width of the final adder. We wrote Verilog generators for our method as well as one leading work in the literature. For synthesis, we wrote a script that can do “binary search” for the optimum latency. Our extensive implementation results on Xilinx Virtex-6 FPGAs show that we almost always produce circuits with smaller latency (i.e., timing) and Area-Timing Product (ATP) compared to the state-of-the-art in the literature, by 18% and 12% (on the average), respectively. We also offer smaller latency compared to the HDL * operator by 9% on the average at a cost of 12% larger ATP on the average. We are worse in latency in 6 cases out of 33, in all of which synthesis maps * to DSP slices. We also include area and energy results on Virtex-6 as well as a limited amount of latency, area, and ATP results on Virtex-5 and Altera Stratix III