Seismic assessment of historical masonry structures: The case of Amasya Taşhan

Zeki Karaca,Erdem Türkeli,Şenol Pergel 사단법인 한국계산역학회 2017 Computers and Concrete, An International Journal Vol.20 No.4

Turkey owns a very important cultural and historical heritage that bears the traces of thousands of years of culture and civilization. It is an inevitable duty to carry these treasuries to the future generations. In this paper, structural safety assessment and strengthening stages of one of these important historical heritages namely Amasya Taşhan was investigated in details as a case study. For this purpose, the detailed architectural projects of the structure with the information of all load carrying and structural elements were prepared. Then, the structural dynamic analyses were performed by using SAP2000. The internal forces obtained from the dynamic analyses determined the weak regions. By obtaining the information from dynamic analyses, the method of state of the art technique of application of the structure that needs structural strengthening was selected. The last step is the application of these precautions to the whole structure. At the end of this study, this study not also contains several strengthening techniques that is used in one masonry structure together but also provides a useful reference to the practicing engineers.

Progressive Download for 3G Wireless Multicasting

Zeki Yetgin,Gamze Seckin 보안공학연구지원센터 2008 International Journal of Hybrid Information Techno Vol.1 No.2

This study focuses on the gain of using progressive download instead of legacy download for streamable media files for wireless multicasting networks. With progressive download, the media content can be played after some waiting time, while the downloading still continues in the background. We focus on 3GPP’s wireless multimedia broadcast multicast system (MBMS). First we provide a legacy MBMS download system optimized for waiting time to play the media. Then we provide a progressive MBMS download system to compare the gain in waiting time. Reliability is assumed to be provided with a FEC mechanism. We considered Reed Solomon and Raptor FEC and finally provided comparisons of both FEC methods with regards to savings in waiting time for progressive download. The results encourage the usage of progressive ownload instead of legacy download mechanism where the data file is streamable, for improved user experience for 3G wireless multicasting systems.

A Cognitive Grammar account of sentence types in English

( Zeki Hamawand ) 경희대학교 언어정보연구소 2020 언어연구 Vol.37 No.3

This paper provides new insights into sentence types in English, based on Cognitive Grammar. The paper applies three of its theories of meaning to sentence types. One theory is that a linguistic expression is polysemous, having more than one function. On this basis, the paper argues that a sentence type has a wide range of functions that gather around a central function. Another theory is that the meaning of a linguistic expression is best understood in terms of the domain to which it belongs. On this basis, the paper argues that sentence types form sets in which they highlight not only similarity but also difference. A further theory is that the use of a linguistic expression is governed by the particular construal imposed by the speaker on its content. On this basis, the paper argues that the use of a sentence type results from the particular construal the speaker chooses to describe a situation. The aim of the paper is to present a new conception of sentence types, using the tools of Cognitive Grammar. A sentence type has been found to be polysemous in nature, associated with pragmatic functions, and the result of construal imposed on its content. (Kirkuk University)

The slenderness effect on wind response of industrial reinforced concrete chimneys

Zeki Karaca,Erdem Türkeli 한국풍공학회 2014 한국풍공학회지 Vol.18 No.3

There are several parameters affecting the response of industrial reinforced concrete (RC)chimneys, i.e., the severity of wind and earthquake loads acting to the structure, structural properties such asheight and cross section of the chimney, the slenderness property of the structure etc. One of the mostimportant parameter that should be considered while understanding the wind response of industrial RCchimneys is slenderness property. Although there is no certain definition for slenderness effect on thesestructures, some standards like ASCE-7 define slenderness from different aspects of the structural properties. In the first part of this study, general information about the definition of slenderness in the well-knownstandards and ten selected industrial RC chimneys are given. In the second part of the study, briefinformation about wind load standards that are used for calculating wind loads namely ACI 307/98, CICIND2001, DIN 1056, TS 498 and Eurocode 1 is given. In the third part of the study, calculated wind loads forselected chimneys are represented. In the fourth part of this study, the internal forces obtained from loadcombinations that are applied to chimneys and some graphs presenting the effect of slenderness on chimneysare given. In the last part of the study, a conclusion and discussion part is taking place.

Occurrence and Antibiotic Susceptibility of Listeria Species in Turkey Meats

Zeki Aras,Mustafa Ardiç 한국축산식품학회 2015 한국축산식품학회지 Vol.35 No.5

The aims of this study were to investigate the occurrence of Listeria species in turkey meats and to check the antimicrobial susceptibility of the isolated strains. Hundred and fifteen raw turkey meat samples were randomly collected from the supermarkets, butchers and restaurants. Strain isolation and identification were made according to the ISO11290-1 method. Antimicrobial susceptibility was determined by the standard disc diffusion method. A total of 47 Listeria spp. were isolated from 115 (40.9%) raw turkey meat samples. The isolates were distributed between L. monocytogenes (25.53%), L. innocua (34.04%), L. grayi (31.91%) and L. welshimeri (8.51%). A total of 55.3 % of Listeria spp. isolates were multi-resistant to at least 3 of the antimicrobial agent tested. The level of multi-resistance was higher in L. monocytogenes strains (66.7%) than in L. innocua (62.5%) and L. grayi (53.3%). Listeria spp. isolates were highly resistant to ampicillin, cephalothin, penicillin, meticillin, oxacillin, and trimethoprime-sulfamethoxazole. The isolates particularly L. monocytogenes are increasingly resistant to one or more antibiotics and may represent a potential risk for public health because these antibiotics are common used in treatment of listeriosis. The correct and controlled use of antibiotics in veterinary medicine is important to the emergence of resistant strains.

Occurrence and Antibiotic Susceptibility of Listeria Species in Turkey Meats

Aras, Zeki,Ardic, Mustafa Korean Society for Food Science of Animal Resource 2015 한국축산식품학회지 Vol.35 No.5

The aims of this study were to investigate the occurrence of Listeria species in turkey meats and to check the antimicrobial susceptibility of the isolated strains. Hundred and fifteen raw turkey meat samples were randomly collected from the supermarkets, butchers and restaurants. Strain isolation and identification were made according to the ISO11290-1 method. Antimicrobial susceptibility was determined by the standard disc diffusion method. A total of 47 Listeria spp. were isolated from 115 (40.9%) raw turkey meat samples. The isolates were distributed between L. monocytogenes (25.53%), L. innocua (34.04%), L. grayi (31.91%) and L. welshimeri (8.51%). A total of 55.3 % of Listeria spp. isolates were multi-resistant to at least 3 of the antimicrobial agent tested. The level of multi-resistance was higher in L. monocytogenes strains (66.7%) than in L. innocua (62.5%) and L. grayi (53.3%). Listeria spp. isolates were highly resistant to ampicillin, cephalothin, penicillin, meticillin, oxacillin, and trimethoprime-sulfamethoxazole. The isolates particularly L. monocytogenes are increasingly resistant to one or more antibiotics and may represent a potential risk for public health because these antibiotics are common used in treatment of listeriosis. The correct and controlled use of antibiotics in veterinary medicine is important to the emergence of resistant strains.

Survival Analysis of Biliary Tract Cancer Cases in Turkey

Akca, Zeki,Mutlu, Hasan,Erden, Abdulsamet,Buyukcelik, Abdullah,Cihan, Yasemin Benderli,Goksu, Sema Sezgin,Aslan, Tuncay,Sezer, Emel Yaman,Inal, Ali Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.15

Background: Because of the relative rarity of biliary tract cancers (BTCs), defining long term survival results is difficult. In the present study, we aimed to evaluate the survival of a series of cases in Turkey. Materials and Methods: A totally of 47 patients with billiary tract cancer from Mersin Goverment Hospital, Acibadem Kayseri Hospital and Kayseri Training and Research Hospital were analyzed retrospectively using hospital records between 2006-2012. Results: The median overall survival was $19.3{\pm}3.9$ months for all patients. The median disease free and overall survivals were $24.3{\pm}5.3$ and $44.1{\pm}12.9$ months in patients in which radical surgery was performed, but in those with with inoperable disease they were only $5.3{\pm}1.5$ and $10.7{\pm}3.2$ months, respectively. Conclusions: BTCs have a poor prognosis. Surgery with a microscopic negative margin is still the only curative treatment.

The slenderness effect on wind response of industrial reinforced concrete chimneys

Karaca, Zeki,Turkeli, Erdem Techno-Press 2014 Wind and Structures, An International Journal (WAS Vol.18 No.3

There are several parameters affecting the response of industrial reinforced concrete (RC) chimneys, i.e., the severity of wind and earthquake loads acting to the structure, structural properties such as height and cross section of the chimney, the slenderness property of the structure etc. One of the most important parameter that should be considered while understanding the wind response of industrial RC chimneys is slenderness property. Although there is no certain definition for slenderness effect on these structures, some standards like ASCE-7 define slenderness from different aspects of the structural properties. In the first part of this study, general information about the definition of slenderness in the well-known standards and ten selected industrial RC chimneys are given. In the second part of the study, brief information about wind load standards that are used for calculating wind loads namely ACI 307/98, CICIND 2001, DIN 1056, TS 498 and Eurocode 1 is given. In the third part of the study, calculated wind loads for selected chimneys are represented. In the fourth part of this study, the internal forces obtained from load combinations that are applied to chimneys and some graphs presenting the effect of slenderness on chimneys are given. In the last part of the study, a conclusion and discussion part is taking place.

Extended Wireless pH Monitoring Significantly Increases Gastroesophageal Reflux Disease Diagnoses in Patients With a Normal pH Impedance Study

Sebastian S Zeki,Ismail Miah,Pierfrancesco Visaggi,Anna Wolak,Minerva deSilva,Jason M Dunn,Andrew Davies,James Gossage,Abrie Botha,Guiping Sui,Jafar Jafari,Terry Wong 대한소화기 기능성질환∙운동학회 2023 Journal of Neurogastroenterology and Motility (JNM Vol.29 No.3

Background/AimsExtended wireless pH monitoring (WPM) is used to investigate gastroesophageal reflux disease (GERD) as subsequent or alternative investigation to 24-hour catheter-based studies. However, false negative catheter studies may occur in patients with intermittent reflux or due to catheter-induced discomfort or altered behavior. We aim to investigate the diagnostic yield of WPM after a negative 24-hour multichannel intraluminal impedance pH (MII-pH) monitoring study and to determine predictors of GERD on WPM given a negative MII-pH. MethodsConsecutive adult patients (> 18 years) who underwent WPM for further investigation of suspected GERD following a negative 24-hour MII-pH and upper endoscopy between January 2010 and December 2019 were retrospectively included. Clinical data, endoscopy, MII-pH, and WPM results were retrieved. Fisher’s exact test, Wilcoxon rank sum test, or Student’s t test were used to compare data. Logistic regression analysis was used to investigate predictors of positive WMP. ResultsOne hundred and eighty-one consecutive patients underwent WPM following a negative MII-pH study. On average and worst day analysis, 33.7% (61/181) and 34.2% (62/181) of the patients negative for GERD on MII-pH were given a diagnosis of GERD following WPM, respectively. On a stepwise multiple logistic regression analysis, the basal respiratory minimum pressure of the lower esophageal sphincter was a significant predictor of GERD with OR = 0.95 (0.90-1.00, P = 0.041). ConclusionsWPM increases GERD diagnostic yield in patients with a negative MII-pH selected for further testing based on clinical suspicion. Further studies are needed to assess the role of WPM as a first line investigation in patients with GERD symptoms.

ON NEW INEQUALITIES OF SIMPSON'S TYPE FOR GENERALIZED CONVEX FUNCTIONS

Sarikaya, Mehmet Zeki,Budak, Huseyin,Erden, Samet The Kangwon-Kyungki Mathematical Society 2019 한국수학논문집 Vol.27 No.2

In this paper, using local fractional integrals on fractal sets $R^{\alpha}(0<{\alpha}{\leq}1)$ of real line numbers, we establish new some inequalities of Simpson's type based on generalized convexity.