Why do we tell stories? Personal notes on visual storytelling in photography

The purpose of this study is to investigate the relationship between visual storytelling and photography practice over the history, reasons and different approaches of storytelling. Besides, it aims to evaluate the role and effects of visual storytelling on my photography practice with examples from the history of photography and visual arts. During this evaluation, this study questions the reasons for choosing photography as a means of storytelling and explains the development along with the production process of my photographic series titled “Ida: The Story of a Mountain”. This photographic study conducted through practicing a personal narrative approach, aims to experience that geography by means of photography in the context of the relationship between human and nature in the region of Mount Ida. This study, which spans three years in total and is still ongoing, does not aim to make determinations on the economic, political and sociological conditions of this geography. It examines the relationship I have established as a photographer in the context of the relationship between the guest and the host

Improved cryptanalysis of skein

The hash function Skein is the submission of Ferguson et al. to the NIST Hash Competition, and is arguably a serious candidate for selection as SHA-3. This paper presents the rst third-party analysis of Skein, with an extensive study of its main component: the block cipher Three sh. We notably investigate near collisions, distinguishers, impossible di erentials, key recovery using related-key di erential and boomerang attacks. In particular, we present near collisions on up to 17 rounds, an impossible di erential on 21 rounds, a related-key boomerang distinguisher on 34 rounds, a known-related-key boomerang distinguisher on 35 rounds, and key recovery attacks on up to 32 rounds, out of 72 in total for Threefish-512. None of our attacks directly extends to the full Skein hash. However, the pseudorandomness of Threefish is required to validate the security proofs on Skein, and our results conclude that at least 3

Clinical and demographic characteristics of children with familial mediterranean fever in Central Anatolia

PubMe

Macromol. Mater. Eng. 3/2018

Bacterial cellulose blended polymeric fibrous bandages made in a novel way, from a solution subjected to gyration under pressure to directly weave the bandages. The products show cellular attraction, mechanical and swelling properties in preliminary tests and heralds a very promising new route for the manufacture of wound care bandages. This is reported by Esra Altun, Mehmet Onur Aydogdu, Fatma Koc, Maryam Crabbe‐Mann, Francis Brako, Rupy Kaur‐Matharu, Gunes Ozen, Serap Erdem Kuruca, Ursula Edirisinghe, Oguzhan Gunduz, and Mohan Edirisinghein

Novel Making of Bacterial Cellulose Blended Polymeric Fiber Bandages

Bacterial cellulose (BC) is a very promising biological material. However, at present its utilization is limited by difficulties in shape forming it. In this Communication, it is shown how this can be overcome by blending it with poly(methylmethacrylate) (PMMA) polymer. BC:PMMA fibers are produced by pressurized gyration of blended BC:PMMA solutions. Subsequently, BC:PMMA bandage‐like scaffolds are generated with different blends. The products are investigated to determine their morphological and chemical features. Cell culture and proliferation tests are performed to obtain information on biocompatibility of the scaffolds

Failure loads of mechanical fastened pinned and bolted composite joints with two serial holes

An experimental and numerical study has been carried out to investigate the first failure load and the bearing strength behavior of pinned joints of glass fiber reinforced woven epoxy composite prepregs with two serial holes subjected to traction forces by two serial rigid pins. In the experiments, a number of parameters such as the edge distance-to- upper hole diameter (E/D), the distance between center of two holes-to-hole diameter (K/D), and the width of the specimen-to-hole diameter (W/D) were varied. Each specimen configuration was analyzed using the finite element model. Generally, comparison between computed and experimental results for first failure load presented a good agreement. Also to see the effects of preload moments and sea water on the bearing strength of joints an experimental investigation was carried out. For this purpose, the specimens were tested under 3 and 6 Nm preload moments for unimmersed condition. Other specimens held in sea water for 24 h. Afterwards, the same experiments were performed to the immersed specimens. It was observed that the immersion of test specimens into sea water causes a decrease in the failure load without a preload moment. The test specimens under preload moments produce nearly the same bearing strength as unimmersed specimens. (C) 2010 Elsevier Ltd. All rights reserved

Elasto-plastic stress distributions in adhesively bonded double lap joints

Elasto-plastic stress analysis is an important solution for a used ductile adhesive in single or double lap solutions. After loading, the joint strength can be increased by residual stresses. In this study, an elasto-plastic stress analyses of the shear and peel stresses are carried out in a double-lap joint. The adhesive material is chosen as a ductile material which is DP460. Elasto-plastic solution of the shear stress is obtained in a simple and accurate form in one dimensional case. Then, the solution of the peel stress is performed by considering the shear stress in the elasto-plastic form. In this solution, the boundary conditions are satisfied by the Newton-Raphson method. A good agreement is obtained between these analytical and numerical (ANSYS 10) solutions. The values are calculated highest at the ends of the adhesive. (c) 2012 Elsevier Ltd. All rights reserved

Low temperature and tightening torque effects on the failure response of bolted glass fiber/epoxy composite joints

This article reports an experimental investigation on failure responses of single lap double serial fastener joints in glass fiber/epoxy composite laminates when subjected to low-temperature environment. The results of experiments, implemented at five different low-temperature levels ranging from 0? to -40?, were evaluated in comparison with room temperature tests. Joints exhibited relatively higher load-carrying capacities with increased stiffness by decreasing temperature. In order to examine tightening torque effects at each temperature condition, bolts were fastened under M=6Nm and M=0Nm (finger tightened) torques. As expected, a greater amount of bearing load could be carried by the joints with pre-tightened fasteners. Furthermore, any reduction in temperature is observed to lift the effectiveness of tightening torque on the joint strength. Regardless of the temperature exposed, bearing mode, the most desirable failure type in mechanically fastened joints was monitored as the main failure mode

Nonlinear stress analysis in adhesively bonded single-lap joint

WOS: 000324365300004In this investigation, an analytical elastic-plastic solution was proposed for a single-lap joint. A ductile adhesive joint material was used as the bond material. FM-73 was utilized in the study. The influence of the bending moment was neglected in the solution. The solution was modified for shear stresses. The analytical solution was compared with the FEM solution. An ANSYS 10.0 solution was employed in the numerical solution. Both solutions were compared with each other. These two solutions produced close agreements

Experimental and numerical failure analysis of carbon/epoxy laminated composite joints under different conditions

The aim of this study is to investigate the effects of preload moment, moisture and interference-fit on bearing strength and failure mode in pin-jointed and bolted carbon-epoxy plates which were subjected to a traction force. Two different geometrical parameters, end distance to pin diameter ratio (E/D) and width to pin diameter ratio (W/D), were considered experimentally. E/D and W/D ratios were selected ranging from 1 to 4 and from 2 to 4, respectively. The test results showed that the ultimate failure loads were directly affected by the geometrical parameters, preload moments and interference-fit. Furthermore, for the specimens in wet condition, failure loads increased with preload moments while failure loads stayed almost the same in non-preloaded specimens. Finite element models of the specimens were also developed by using ANSYS software. Contact and stress analyses of the models were carried out for both free and interference-fit. Tsai-Wu criterion was used to determine bearing strength corresponding to first failure load. It was concluded that the numerical results are in good agreement with experimental results. (C) 2010 Elsevier Ltd. All rights reserved