Collagenous Fibroma (Desmoplastic Fibroblastoma)

Muharrem Dagli,Adil Eryilmaz,Aydin Acar,Sezer Kulacoglu,Halit Akmansu 연세대학교의과대학 2004 Yonsei medical journal Vol.45 No.5

A Collagenous Fibroma (Desmoplastic Fibroblastoma) is a rare, benign, slowly growing, fibroblastic, soft tissue lesion. Here, the case of a 28-year-old woman, who presented with a 1-year history of a slowly growing painless mass in the right anterior aspect of her neck, is described. This type of tumor was first described by Evans in 1995, and named as a Desmoplastic fibroblastoma but was renamed, by Nielsen in 1996 as a Collagenous Fibroma. This type of tumor is frequently reported in men with a mean age at occurance of 50 years. Clinically, a Collagenous fibroma presents as a firm, well-circumscribed subcutaneous, or intramuscular, painless mass of long duration. They are mostly located in the neck and extremities. The tumors range in size from 1 to 20cm and predominantly occurs within the subcutaneous tissue, but fascial and skeletal muscle involvement is common. The treatment of a Collagenous Fibroma is a total surgical excision. No tumor recurrence has been reported the literature during the follow-up period and no tumor recurrence was observed in our case at the 1-year follow-up.

Missio-historical Understanding of the Context of the Middle East for the Establishing Theological Seminary - Through the Example of Turkish Context

Muharrem Gunduz 장로회신학대학교 세계선교연구원 2007 선교와 신학 Vol.20 No.-

Regional Tidal Modelling Using Tide Gauges and Satellite Altimetry Data in South-West Coast of Turkey

Muharrem Hilmi Erkoç,Uğur Doğan 대한토목학회 2022 KSCE Journal of Civil Engineering Vol.26 No.9

This study aims to determine the main tidal parameters and the regional tidal model in the south-west coasts of Turkey using the least-squares harmonic estimation method. For this purpose, the sea level data were analyzed and compared to the tides that affect sea level based on the tidal model using the tide gauge station and satellite altimetry data. High-Frequency tide gauge data were obtained from the TUDES (Turkish National Sea Level Monitoring System) data archive and multi-mission satellite altimetry data were achieved from the AVISO data archive. The tidal components of ten tide gauge stations distributed in the south-west coast of Turkey were computed between the period 1998 – 2018. The results were compared with DTU10 and FES2014b global tide models and regional X-TRACK tidal constants (for Mediterranean). It was found that the differences of the global and regional model solutions were less than 1.3 cm for the main tide constituents (semidiurnal: M2, S2 and diurnal: K1, O1). Moreover, a regional tidal model for Turkey’s south-west coast was determinedfrom tide gauge stations and satellite altimetry. The results indicated that the difference between the two solutions was about 0.8 cm.

중동 신학교 설립의 역사적 배경 연구

균두스(Muharrem Gunduz) 장로회신학대학교 세계선교연구원 2007 선교와 신학 Vol.20 No.-

Middle East is religiously highly condensed region where three monotheistic religions were born. The church of Christ in the Middle East has the longest history than the church histories in other part of the world. Therefore, to make the religious studies in this part of the world is relatively much complicated. Without knowing the religious traditions of the region, any attempt to make an institution for the theological studies will be building the house in the dust. For the strong foundation of an institution for theological studies among a specific people, you need to know their religious traditions. Understanding of their historical background will help us to understand what kind of difficulties we will have in establishing a theological seminary. A seminary is a need for the production of clergy and making academic studies. It seems to be understood as a need in places where religious freedom is granted. But, such places like Middle East where there is partial (sometimes none) religious freedom, establishing a Christian theological seminary is understood to be a treat to nations unity. It is because Christianity in this region has some historical limitations which is still affecting any new Christian attempt to spread the good news. It is not just the matter of non-Christians’ coming against Christian work because of their religious sentiments. It also includes Christians’ short comings and misunderstanding resulted in through the conflicts between Christians and Muslims. In the case of Turkey, establishing a theological seminary is therefore is not just the matter of religious freedom of faith communities. It is also closely related with their past. In the case of Heybeli Island Seminary, which has been closed for the last 36 years because of some political and legalistic reasons, the Greece Orthodox Church in Turkey has been facing so many complicated problems in reopening the seminary as in its former status. To solve the need of a theological seminary, Christians in Turkey should make every effort to make their needs clergy and the kind of a theological seminary to be known and understood by the Turkish government. Although Greece Orthodoxs Christians take the initiative in the matter, it is true that they are not alone in this need. So this must be done in cooperation and partnership with other Christian communities, namely Armenian Orthodoks and Turkish Protestants.

Development of a prediction model using fully connected neural networks in the analysis of composite structures under bird strike

Zehra Hasılcı,Muharrem Erdem Boğoçlu,Ahmet Selim Dalkılıç,Altan Kayran 대한기계학회 2022 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.36 No.2

Bird strike is one of the most hazardous issues facing global aviation. In the present study, a hybrid methodology is developed utilizing, automated data generation and fully connected neural networks to practically and reliably obtain the global deformation of composite structures subject to bird strike. The validation of the proposed numerical bird strike model is accomplished by making comparisons with the available experimental data from three different resources in the literature on the chicken and gelatine strike tests to a rigid plate, and strike test against an aircraft composite vertical leading edge. For three different bird velocities, 9402 input files are created by an automatic data generator considering all possible stacking sequence combinations in accordance with the composite design guidelines. The global deformation of composite laminates caused by bird strike is estimated via the fully connected neural networks established. Results of the present study show that with the use of fully connected neural networks, global deformation of the composite laminate can be estimated reliably and preliminary design of the composite laminate can be performed very fast compared to performing nonlinear finite element analysis involving bird strike. In conclusion, the fully connected neural network model is found to be an alternative for additional LS-Dyna simulations in the optimization process.

In vivo wear determination of novel CAD/CAM ceramic crowns by using 3D alignment

Akın Aladag,Didem Oguz,Muharrem Erhan Çömlekoglu,Ender Akan 대한치과보철학회 2019 The Journal of Advanced Prosthodontics Vol.11 No.2

PURPOSE. To determine wear amount of single molar crowns, made from four different restoratives, and opposing natural teeth through computerized fabrication techniques using 3D image alignment. MATERIALS AND METHODS. A total of 24 single crowns (N = 24 patients, age range: 18 - 50) were made from lithium disilicate (IPS E-max CAD), lithium silicate and zirconia based (Vita Suprinity CAD), resin matrix ceramic material (Cerasmart, GC), and dual matrix (Vita Enamic CAD) blocks. After digital impressions (Cerec 3D Bluecam, DentsplySirona), the crowns were designed and manufactured (Cerec 3, DentsplySirona). A dualcuring resin cement was used for cementation (Variolink Esthetic DC, Ivoclar). Then, measurement and recording of crowns and the opposing enamel surfaces with the intraoral scanner were made as well as at the third and sixth month follow-ups. All measurements were superimposed with a software (David-Laserscanner, V3.10.4). Volume loss due to wear was calculated from baseline to follow-up periods with Siemens Unigraphics NX 10 software. Statistical analysis was accomplished by Repeated Measures for ANOVA (SPSS 21) at = .05 significance level. RESULTS. After 6 months, insignificant differences of the glass matrix and resin matrix materials for restoration/enamel wear were observed (P>.05). While there were no significant differences between the glass matrix groups (P>.05), significant differences between the resin matrix group materials (P<.05) were obtained. Although Cerasmart and Enamic were both resin matrix based, they exhibited different wear characteristics. CONCLUSION. Glass matrix materials showed less wear both on their own and opposing enamel surfaces than resin matrix ceramic materials.

Implementation of Screening Colonoscopy amongst First-Degree Relatives of Patients with Colorectal Cancer in Turkey: a Cross-Sectional Questionnaire Based Survey

Adakan, Yesim,Taskoparan, Muharrem,Cekin, Ayhan Hilmi,Duman, Adil,Harmandar, Ferda,Taskin, Vildan,Yilmaz, Ustun,Yesil, Bayram Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.14

Objective: To evaluate the implementation of screening colonoscopy amongst first-degree relatives (FDRs) of patients with colorectal cancer (CRC) in Turkey. Materials and Methods: A total of 400 first-degree relatives (mean(SD)age: 42.5(12.7) years, 55.5% were male) of 136 CRC patients were included in this cross-sectional questionnaire based survey. Data on demographic characteristics, relationship to patient and family history for malignancy other than the index case were evaluated in the FDRs of patients as were the data on knowledge about and characteristics related to the implementation of screening colonoscopy using a standardized questionnaire form. Results: The mean(SD) age at diagnosis of CRC in the index patients was 60.0(14.0) years, while mean(SD) age of first degree relatives was 42.5(12.7) years. Overall 36.3% of relatives were determined to have knowledge about colonoscopy. Physicians (66.9%) were the major source of information. Screening colonoscopy was recommended to 19.5% (n=78) of patient relatives, while 48.7% (n=38) of individuals participated in colonoscopy procedures, mostly (57.9%) one year after the index diagnosis. Screening colonoscopy revealed normal findings in 25 of 38 (65.8%) cases, while precancerous lesions were detected in 26.3% of screened individuals. In 19.0% of FDRs of patients, there was a detected risk for Lynch syndrome related cancer. Conclusions: In conclusion, our findings revealed that less than 20% of FDRs of patients had received a screening colonoscopy recommendation; only 48.7% participated in the procedure with detection of precancerous lesions in 26.3%. Rise of awareness about screening colonoscopy amongst patients with CRC and first degree relatives of patients and motivation of physicians for targeted screening would improve the participation rate in screening colonoscopy by FDRs of patients with CRC in Turkey.

Rare cause of seizures: ruptured intracranial dermoid cyst

Rohat Ak,Fatih Doğanay,Muharrem Doğan 대한응급의학회 2019 Clinical and Experimental Emergency Medicine Vol.6 No.1

What is already known Intracranial dermoid cysts can present with a seizure. What is new in the current study Dermoid cysts should be considered in the differential diagnosis of seizures and total removal is recommended when possible.

Fragmented local normative orders, unresolved localizations, and the contesting of gender equality norms in Turkey

Hüsrev Tabak,Seven Erdoğan,Muharrem Doğan 이화여자대학교 한국여성연구원 2022 Asian Journal of Women's Studies(AJWS) Vol.28 No.2

This paper examines the localization process of the global gender equality norm in Turkey and argues that the normative contestations on this concern, among rival political blocs and activist groups, have not allowed any resolution. Accordingly, the global gender equality norm has undergone state-led secular localization as of the 1990s. In the post-2010 context under AKP rule, however, this process was disrupted by the proponents of the alternative conservative local norm of gender justice, who sought to replace the already localized norm of gender equality. Our study examines the contestations and rivalries regarding gender equality in the country with an emphasis on normative strategies utilised by the secular and conservative political blocs. Based on face-to-face interviews conducted with representatives of the main trade unions in the country, we also did a minor case study of the ongoing contestations regarding the adoption of gender equality norms, as manifested in trade union activism.

CERTAIN GENERALIZED OSTROWSKI TYPE INEQUALITIES FOR LOCAL FRACTIONAL INTEGRALS

Choi, Junesang,Set, Erhan,Tomar, Muharrem Korean Mathematical Society 2017 대한수학회논문집 Vol.32 No.3

We give a function associated with generalized Ostrowski type inequality and its integral representation for local fractional calculus. Then, using this function and its integral representation, we establish several inequalities of generalized Ostrowski type for twice local fractional differentiable functions. We also consider some special cases of the main results which are further applied to a concrete function to yield two interesting inequalities associated with two generalized means.