205 research outputs found
Elâzığ / Hüseynik (Ulukent) Havuzbaşı ve Harput Panoraması
No full textBu makalede Elâzığ'ın 4 km doğusunda bulunan Ulukent (Hüseynik) mahallesinde, Çağlayan ailesine ait evin bahçesinde ayrı bir yapı şeklinde düzenlenmiş olan havuzbaşının mimarisi ve yapının duvarına karakalem çalışması olarak yapılmış olan Harput panoraması ele alınmıştır. Havuzbaşı mimari ve plan özellikleri açısından bakıldığında, iki bölümlü olarak yapılmıştır. Esas mekân eyvan biçiminde düzenlemeye sahiptir. Ön cephesi güneye dönük olan yapının güney batıdaki küçük olan (kapalı tutulan) I. mekânında ocak ve davlumbazı bulunduğu belirtilmektedir. Bu mekân mutfak işlevi görmektedir. II. mekânın ise; güney ve doğu cepheleri açık tutulmuş, kuzey ve batı yönleri ise kapalı tutulmuştur. Batı duvarı üzerine Harput panoraması işlenmiştir. Eserin mimarisinden ziyade panoraması, yayınlarda ele alınmıştır. Metin Sözen, Rüçhan Arık ve Namık Açıkgöz çalışmalarında panoramayı ele almışlardır. "Eser birçok unsuru ve umumi kompozisyon anlayışı açısından şehir minyatür hususiyeti arz etmektedir" şeklinde değerlendirilmektedir. Ancak; eser yapılış şekli itibarıyla karakalem duvar gravürü olarak nitelendirilebileceği kanaatindeyim. Karakalem çalışması olarak yapılan panorama 105 X 270 cm ebadındadır. Perspektif uygulaması olmayan çizimde Harput'un yaklaşık yüzyıl önceki durumu resmedilmiştir. This article studies architecture of Havuzbaşı and Harput panorama which was drawn in pencil on the wall of fountain in the garden of Çağlayan Family's house which is located at the quarter of Ulukent (Hüseynik) 4 km far east of Elâzığ city centre. Building of Havuzbaşı and its plan was constructed in two parts. The main part is liwan (three walled vaulted antechamber). Frontal side looks to south. South-West side of the building was walled and has a fireplace and its chimney. This part is used as kitchen. South and east sides of the second part were open, but north and west sides were walled. On the west wall, Harput panorama was drawn in pencil. Scholars such as Metin Sözen, Rüçhan Arık and Namık Açıkgöz studied the panorama rather than its architecture. The building presents pecularity of city miniature from the point of many elements and general composition view. However, I myself analyse that the work could be named as pencil drawing from the point of its form. Panorama drawn in pencil, is 105x270 cm in size. In this drawing has no perspective performance and shows almost one hundred years ago of Harput
Frequency warping compressive sensing for structural monitoring of aircraft wing
No full textThis work focuses on an ultrasonic guided wave structural health monitoring (SHM) system development for aircraft wing inspection. The performed work simulate small, low-cost and light-weight piezoelectric discs bonded to various parts of the aircraft wing, in a form of relatively sparse arrays, for cracks and corrosion monitoring. The piezoelectric discs take turns generating and receiving ultrasonic guided waves. The development of an in situ health monitoring system that can inspect large areas and communicate remotely to the inspector is highly computational demanding due to both the huge number of Piezoelectric sensors needed and the high sampling frequency. To address this problem, a general approach for low rate sampling is developed. Compressive Sensing (CS) has emerged as a potentially viable technique for the efficient acquisition that exploits the sparse representation of dispersive ultrasonic guided waves in the frequency warped basis. The framework is applied to lower the sampling frequency and to enhance defect localization performances of Lamb wave inspection systems. The approach is based on the inverse Warped Frequency Transform (WFT) as the sparsifying basis for the Compressive Sensing acquisition and to compensate the dispersive behaviour of Lamb waves. As a result, an automatic detection procedure to locate defect-induced reflections was demonstrated and successfully tested on simulated Lamb waves propagating in an aluminum wing specimen using PZFlex software. The proposed method is suitable for defect detection and can be easily implemented for real application to structural health monitoring
De Harput en Turquie à Massachusetts : l’immigration des chrétiens jacobites
No full textThis essay falls into the category of rendering visible a community, the Jacobite Assyrians of Massachusetts, who have remained virtually unknown in the larger context of Middle Eastern Diaspora studies and American ethnic and cultural history. This brief study of the immigration of the Jacobite Christians originally from Harput, Turkey who settled in New England, shows a variety of distinct method(s) of identity preservation and transmission to subsequent generations, especially in regard to personal and group identity structures. These people, sometimes referred to as "Jacobite Syrians" by early Western travellers and missionaries, identified themselves as the "sons of Asshur" in 1842. (Southgate 1856:87) This paper is a narrative of the community's tribulations in their country of origin during the first half of the twentieth century, internal religious politics espoused by the church, as well as their life and establishment in American society
Harput, Turkey to Massachusetts: Immigration of Jacobite Christians
No full textThis essay falls into the category of rendering visible a community, the Jacobite Assyrians of Massachusetts, who have remained virtually unknown in the larger context of Middle Eastern Diaspora studies and American ethnic and cultural history. This brief study of the immigration of the Jacobite Christians originally from Harput, Turkey who settled in New England, shows a variety of distinct method(s) of identity preservation and transmission to subsequent generations, expecially in regard to personal and group identity structures. These people, sometimes referred to as “Jacobite Syrians” by early Western travelers and missionaries, identified themselves as the “sons of Asshur” in 1842 (Southgate 1856:87). This paper is a narrative of the community’s tribulations in their country of origin during the first half of the twentieth century, internal religious politics espoused by the church, as well as their life and establishment in American society
Compressive sensing with frequency warped compensation for damage detection in composite plate
No full textThis work focuses on an ultrasonic guided wave structural health monitoring (SHM) system development for composite plate inspection. The development of an in situ health monitoring system that can inspect large areas and communicate remotely to the inspector is highly computational demanding due to both the huge number of piezoelectric sensors needed and the high sampling frequency. To address this problem, a general approach for low rate sampling is developed. Compressive Sensing (CS) has emerged as a potentially viable technique for the efficient acquisition that exploits the sparse representation of dispersive ultrasonic guided waves in the frequency warped basis. The framework is applied to lower the sampling frequency and to enhance defect localization performances of Lamb wave inspection systems. As a result, an automatic detection procedure to locate defect-induced reflections was demonstrated and successfully tested on simulated Lamb waves propagating in a carbon fiber plate using PZFlex software. The proposed method is suitable for defect detection and can be easily implemented for real application to structural health monitoring
Harput (Elâziğ)
No full textÉchelle(s) : Échelle : 1/200 000Numérisé par le partenaireAppartient à l’ensemble documentaire : BbLevt0Numérisé par le partenair
Çocuklarda halotan ile sevofluranın anestezi indiksiyonu ve uyanma üzerine etkilerinin karşılaştırılması
No full textTEZ2643Tez (Uzmanlık) -- Çukurova Üniversitesi, Adana, 1998.Kaynakça (s. 43-47) var.vi, 47 s. ; 30 cm.
3D Super Localized Flow with Locally and Acoustically Activated Nanodroplets and High Frame Rate Imaging Using a Matrix Array
No full textBlood flow visualization and quantification methods with microbubble contrast agents using High-Frame-Rate (HFR) ultrasound have been developed for 2D and 3D acquisitions. Perfluorocarbon phase change nanodroplets have been investigated as an alternative to MBs, due to their smaller size, longer half-life and spatial and temporal control of their activation enabling contrast on demand. Previous works have shown their potential use as a flow indicator in 2D in-vitro and in-vivo acquisitions. However, the tracking of individual microbubbles was limited to a 2D plane. This work demonstrates the feasibility of 3D flow visualization and quantification using HFR ultrasound acquisition, locally activated nanodroplets, and super-localization and tracking to provide very high-resolution local flow measurement
Quantitative Microvessel Analysis with 3D Super-Resolution Ultrasound and Velocity Mapping
No full textMedical image analysis is becoming increasingly
accessible in the clinic. Computed tomography (CT) or magnetic resonance imaging (MRI) scans are usually post-processed to generate a 3-D visualization of the human body for surgical assistance or extract quantitative data to provide additional diagnostic information. Three dimensional super-resolution ultrasound (SR US) imaging can provide similar information at a micro-level without the high cost or ionising radiation.
In this study, we implemented a high volumetric-rate 3-D
SR US imaging with a 2-D spiral-shaped array and imaged an
in vitro microvascular structure. From the 3-D SR US images
clinically relevant parameters, such as microvascular flow rate, microvessel density and tortuosity, were extracted and compared with the ground truth
Development of Simultaneous Optical Imaging and Super-Resolution Ultrasound to Improve Microbubble Localization Accuracy
No full text© 2018 IEEE. Acoustic super-resolution (SR) has the potential to visualize microvasculature by localizing individual microbubble (MB) signals. Currently, all detected signals are processed and localized identically. However, the MB point spread function (PSF) is not independent of its surroundings. Despite accuracy on the order of microns being required, it is currently not possible to quantify error that may be introduced due to variation in the MB responses. This work combines high frame rate plane wave ultrasound acquisition with a coincident optical microscope visualizing the SR imaging of a 200 μm cellulose tube. An adjustable aperture has been introduced into the optical microscope to extend the optical depth of field over the phantom. The results showed that the introduction of the aperture enabled modest extension of the depth of field over 50 μm about the optical focus. Modelling and experimental verification found that, at a flow rate of 15 μl/min, MBs could only be detected over the top 70 μm of the tube phantom - further reducing the required depth of field. The simultaneous optical and acoustic data suggested that many fewer MBs acoustically contribute to the SR image than can be observed in the optical FOV. Investigations incorporating a ground truth, like this one, will allow sources of error to be identified, quantified and limited
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