19 research outputs found

    The Relationships Between Thinking Styles, Servant Leadership and Extra-role Service Behaviour: An Empirical Study in the Hotel Industry

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    Drawing from thinking styles theories and servant leadership theories, this study investigates whether thinking styles are the predictors of extra-role service behaviour and which of them mediates the effects of servant leadership on extra-role service behaviours. Data collected from frontline hotel employees in Cappadocia were employed to reveal these relationships. The results from regression analysis and path model propose that employees with certain thinking styles display extra-role service performance and the presence of servant leadership fosters employees’ extra-role service behaviours through thinking styles. In brief, there is support for the fully mediated model that servant leadership enhance extra-role service behaviours through type three thinking styles. Importance of thinking styles to the decision makers in the hotel industry and future researchers are debated. Keywords: Hotel industry, Thinking styles, Servant leadership, Extra-rol

    Port Heritage, Planning Challenges and the Role of GIS Tools in Multi Layered Cities: Yenikapi Metro Station, Istanbul

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    The aim of this study is to present arguments showing that on the port heritage area, underground cultural inventory should be considered from the historic landscape point of view within the framework of the conservation plans. This study focuses on the Yenikapı region, whose settlement history of the Historical Peninsula changed following the rescue excavation performed at the end of The Bosphorus Rail Tube Crossing Project (Marmaray). The area covering the Port of Theodosius, whose multi-layered urban formation started in the Neolithic period and which was one of the most significant grain trade ports in the Byzantine era, and the port heritage within the background of this area consist of important spatial formations. However, waterfront regeneration projects have disrupted the spatial continuity of cultural heritage under the effect of neoliberal policies. The methodology of the study, which involves the use of GIS, is based on the overlapping of the archaeological surveys from the Istanbul Archaeology Museum, geological structure data from the Istanbul Metropolitan Municipality, and historical maps. The conservation planning approach in a metropolitan city like Istanbul, whose archaeological layers reflect the port heritage, should be developed by applying the concept of historic urban landscape

    Using high-level synthesis for rapid design of video processing pipes

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    Due to copyright restrictions, the access to the full text of this article is only available via subscription.In this work, we share our experience in using High-Level Synthesis (HLS) for rapid development of an optical flow design on FPGA. We have performed HLS using Vivado HLS as well as a HLS tool we have developed for the optical flow design at hand and similar video processing problems. The paper first describes the design problem we have and then discusses our own HLS tool. The tool we developed has turned out to be pretty general-purpose except for the ability to handle cyclic inter-iteration dependencies. It also introduces some novel concepts to HLS, such as “pipelined multiplexers”. The synthesis results show that we can achieve better timing or better area results compared to Vivado HLS. Furthermore, the Verilog RTL our HLS tool outputs is much more readable than the one from Vivado HLS. This makes it much easier for the designer to debug and modify the RTL.TÜBİTAK; Artemis-JU project ALMARV

    Automatic Analysis of CMAP Scan Data on Healthy Controls and Motor Neuron Patients

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    In this study, motor response recordings were acquired from thenar and hypothenar muscles of poliomyelitis survivors, ALS patients and healthy participants by using CMAP Scan method. CMAP Scan curve was plotted by using 500 stimuli between minimum and maximum stimulus intensity. Automatic analysis software was developed with MATLAB for calculating CMAP Scan parameters. Statistical results revealed that step%, D50 and returner% values can differentiate healthy individuals from the patients. The developed software helps clinicians for following up the progression rate of the diseases which cause anterior horn cell degeneration

    Compound muscle action potential scan and MScanFit motor unit number estimation during Wallerian degeneration after nerve transections

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    WOS: 000537273700001PubMed: 32415858Background Compound muscle action potential (CMAP) scan and MScanFit have been used to understand the consequences of denervation and reinnervation. This study aimed to monitor these parameters during Wallerian degeneration (WD) after acute nerve transections (ANT). Methods Beginning after urgent surgery, CMAP scans were recorded at 1-2 day intervals in 12 patients with ANT of the ulnar or median nerves, by stimulating the distal stump (DS). Stimulus intensities (SI), steps, returners, and MScanFit were calculated. Studies were grouped according to the examination time after ANT. Results were compared with those of 27 controls. Results CMAP amplitudes and MScanFit progressively declined, revealing a positive correlation with one another. SIs were higher in WD groups than controls. Steps appeared or disappeared in follow-up scans. the late WD group had higher returner% than the early WD and control groups. Conclusions MScanFit can monitor neuromuscular dysfunction during WD. SIs revealed excitability changes in DS.University College LondonUniversity College Londo

    Repeater F-waves in amyotrophic lateral sclerosis: Electrophysiologic indicators of upper or lower motor neuron involvement?

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    sirin, Nermin Gorkem/0000-0001-8792-2929;WOS: 000502603500012PubMed: 31760213Objective: To extract insight about the mechanism of repeater F-waves (Frep) by exploring their correlation with electrophysiologic markers of upper and lower motor neuron dysfunction in amyotrophic lateral sclerosis (ALS). Methods: the correlations of Frep parameters with clinical scores and the results of neurophysiological index (NI), MScanfit MUNE, F/M amplitude ratio (F/M%), single and paired-pulse transcranial magnetic stimulation (TMS), and triple stimulation technique (TST) studies, recorded from abductor digiti minimi (ADM) and abductor pollicis brevis (APB) muscles of 35 patients with ALS were investigated. Results: Frep parameters were correlated with NI and MScanfit MUNE in ADM muscle and F/M% in both muscles. None of the Frep parameters were correlated with clinical scores or TST and TMS measures. While the CMAP amplitudes were similar in the two recording muscles, there was a more pronounced decrease of F-wave persistence in APB, probably heralding the subsequent split hand phenomenon. Conclusion: Our findings suggest that the presence and density of Freps are primarily related to the degree of lower motor neuron loss and show no correlation with any of the relatively extensive set of parameters for upper motor neuron dysfunction. Significance: Freps are primarily related to lower motor neuron loss in ALS. (C) 2019 International Federation of Clinical Neurophysiology. Published by Elsevier B.V. All rights reserved

    Repeater F-waves in amyotrophic lateral sclerosis: Electrophysiologic indicators of upper or lower motor neuron involvement?

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    Objective: To extract insight about the mechanism of repeater F-waves (Frep) by exploring their correlation with electrophysiologic markers of upper and lower motor neuron dysfunction in amyotrophic lateral sclerosis (ALS)

    Parameters derived from compound muscle action potential scan for discriminating amyotrophic lateral sclerosis-related denervation

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    Introduction The objective of this study was to determine compound muscle action potential (CMAP) scan parameters and MScanFit motor unit number estimation (MUNE) in patients with amyotrophic lateral sclerosis (ALS) and to compare the results in the abductor pollicis brevis (APB) to those in the abductor digiti minimi (ADM). Methods CMAP scans were recorded from the APB and ADM in 35 patients with ALS and 21 controls. MScanFit MUNE, neurophysiological index (NI), step%, returner%, and D50 were calculated. Results CMAP scan parameters including the returner%, MScanFit MUNE, and NI can distinguish ALS with high sensitivity and specificity. The electrophysiological parameters, with the exception of D50 (the number of largest consecutive differences of recorded responses generating 50% of maximum CMAP), showed more pronounced changes in the APB than in the ADM, even though most of the patients had normal APB/ADM amplitude ratios. Discussion CMAP scan parameters and MScanFit MUNE can be used in the evaluation of denervation and reinnervation and may herald the "split hand" in ALS

    Automatic detection of F waves and F-MUNE in two types of motor neuron diseases.

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    Introduction/Aims Motor unit number estimation by F waves (F-MUNE) is an uncommonly used MUNE technique. Our aim in this study was to assess the sensitivity of F-MUNE values elicited with newly developed software in motor neuron diseases. Methods F waves were recorded by 300 submaximal stimuli from abductor digiti minimi and abductor pollicis brevis muscles of 35 patients with amyotrophic lateral sclerosis, 18 with previous poliomyelitis, and 20 controls. The software determined the surface motor unit action potentials (sMUAPs) and calculated the F-MUNE values. Compound muscle action potential scans were also recorded to obtain MScanFit. Results The sMUAP amplitudes were higher and F-MUNE values were lower in both muscles of the patients when compared with controls. F-MUNE values could distinguish patients from controls. Significant correlations were found between F-MUNE and MScanFit in the patient groups. Discussion The new F-MUNE software offered promising results in revealing motor unit loss caused by motor neuron diseases
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