bluuebunny/crossref_metadata_2025 huggingface dataset:
Design and Implementation of a Compact 36 KV 1250 A. Front Mechanism Vacuum Circuit Breaker
Authors: TAPLAMACIOĞLU Müslüm Cengiz , UZEL Sabri , ALADAĞ Özhan , KESKİNTAŞ Sercan
Published: June 2019

The vacuum circuit breakers
constitute the most important part of distribution network owing to their
advantageous such as big electrical strength, long life, easy maintenance, safe
operation, low price and high short circuit current etc. This type of circuit
breakers is produced in Turkey with domestic facilities as a result of various
research and development studies. In this paper, the step by step development
and modification studies for 36 KV 1250A front mechanism vacuum circuit breaker
is presented in order to be ready for the 5000 cycles test. In this way, it is
intended to be an example and guiding study to the researchers worked in this
field. At the end of the study, the circuit breaker successfully passes the
5000 cycles test.
Asartepe Baraj Gölü’ndeki Carassius gibelio (Bloch, 1782)’nun Bazı Populasyon Dinamiği Parametreleri
Authors: SAYLAR Ömer , GÜL Göktuğ , YILMAZ Mehmet , GÜL Ali
Published: June 2019

Bu çalışmada Asartepe Baraj Gölü’nde yaşayan Carassius gibelio (Bloch,
1782)’nun bazı biyolojik özellikleri belirlenmiştir. Bu türün Göl’deki balık populasyonuna
ne zaman ve nasıl katıldığı kesin olarak bilinmemekle beraber aşılama yoluyla
dâhil olduğu tahmin edilmektedir. Örnekleme çalışmaları Mart 2015-Şubat 2016
tarihleri arasında üç ayrı istasyonda gerçekleştirilmiştir. Yakalanan 46 adet
(12 erkek, 34 dişi) Carassius gibelio’nun yaş ve eşey kompozisyonu, metrik ve
meristik özellikleri, yaş-boy, yaş-ağırlık, kondisyon faktörü ve büyüme
parametreleri tespit edilmiştir. Dişi–erkek oranı 1: 0,35 olarak hesaplanmıştır.
Yaş tayini omurlardan yapılmıştır. Bireyler I-V yaş aralığında dağılım göstermiş
olup, hem dişi hem erkek bireylerde III. yaş grubunun baskın olduğu
anlaşılmıştır. Dorsal yüzgeç: II-IV 20, Anal yüzgeç: I-III 7, Pektoral yüzgeç: 0-II
13, Ventral yüzgeç: 0-II 9, Yanal çizgideki pul sayısı: 24-32 ve Omur sayısı:
30 bulunmuştur. Total boy ortalaması 278,98±24,26 (190-365) mm ve ağırlık
ortalaması da 466,37±204,16 (113-984) g olarak hesaplanmıştır. Populasyonu
oluşturan bireylerin boy-ağırlık ilişkisi ve büyüme parametreleri W=0,0199 L
3,043 (r 2 =0,883) olarak hesaplanmıştır. Bu denklemde b>3 olduğundan
(3,043) populasyonda pozitif allometrik büyüme tespit edilmiştir. Kondisyon
faktörü ise 2,028±0,276 (0,915-2,740) olarak bulunmuştur.
Teaching Business English with TED Talks: Putting Ideas into Practice
Authors: Stognieva Olga
Published: June 2019

TED.com is used in teaching EFL to enhance exposure to English, to promote authentic vocabulary and to develop multiple foreign language skills. For university students studying business as their major and English for professional communication as a part of their university curriculum, TED talks provide a cutting-edge business context, which aims to increase the learners’ English language proficiency, develop the learners’ professional competencies and expand their outlook by acquainting them with business practices from around the world. Through authentic models of effective communication, students build fluency to achieve academic and personal success. Business English with TED talks, an EFL resource book, is the result of the author’s approach to creating educational materials based on authentic and up to date video content. Using the example of ‘Business English with TED talks’, this paper describes criteria for selecting TED talks for different groups of students, the structure of a TED talk lesson and provides teachers with other resources for supplementing TED talk lessons.
Scoping Reviews: What is in a Name?
Authors: Raitskaya Lilia , Tikhonova Elena
Published: June 2019

The editorial dwells upon scoping or otherwise called mapping reviews that have recently come to the fore. Starting to appear from the early 2000s, scoping reviews initially came out in medicine and biosciences. The present-day unprecedented boost in the scoping review quantity is spurred by a general thrust for structured analysis and synthesis of scientific information across fields and disciplines. The authors aim to overview the methodology of scoping reviews with regard to their prospects for social sciences and humanities.
Prospective life-style intervention in a CVD risk cohort v1
Authors: Haglin Lena , Törnkvist Birgitta , Bäckman Lennart
Published: June 2019

Abstract The high CVD-risk population (2504 patients; 1096 males and 1408 females) were treated with a 4-week comprehensive life-style program with follow-ups at 6 month and 11/2 year or 1 year and after 5 year. The present cox regression concern risk factors for mortality after 18 years with stratification for sex and for smoking habits. Traditional risk factors for CVD was included in the regression to study all-cause, CVD- and Cancer mortality. Laboratory analysis and methods are described in addition to performance of tests for physical function (maximal predictive cycle ergometer test; VO2 max), blood pressure in supine position (3 times/week) and anthropometry (BMI, kg/m2) are reported in medical records. The intervention program and information from questionnaires, including data for assessing smoking habits are included in the present extended section for methods to assure reproducibility. The staff at the center consisted of physical therapists, nurses, dietitians and physicians to substantiate a high level of clinical registrations. The purpose was, besides implementation of rehabilitation, to assess therapies for individual patients.
Efforts to transform Heterosigma akashiwo using an Agrobacterium-mediatedapproach v4
Authors: K Nagarajan Vinay , Accerbi Monica , J Green Pamela
Published: June 2019

This protocol was developed for transformation of Heterosigma akashiwo byAgrobacterium tumefaciens.H. akashiwodoes not grow on solid medium, so transformants are grown "in bulk" and should not be considered clonal. We have had limited success with this protocol and mayrequire further optimization.
Uzamsal Becerilerin Geliştirilmesi İçin Üç Boyut İçerikli Etkileşimli Videoların Kullanılabilirliğine Yönelik Bir İnceleme
Authors: ÇALIŞKAN Erkan , GÖKÇE Semirhan , ÖNAL Nezih
Published: June 2019

Bu çalışmanın temel amacı

geometrik cisimlere yönelik hazırlanan etkileşimli videoların öğrencilerin

uzamsal becerilerinin geliştirilmesi için kullanılabilirliğinin incelenmesidir.

Bu amaç doğrultusunda (1) İnternet ortamında yayınlanan ve güncel web

tarayıcıları tarafından görüntülenebilen etkileşimli videoların nasıl

geliştirilebileceğinin aktarılması, (2) Milli Eğitim Bakanlığı ilköğretim

matematik öğretim programındaki geometrik cisimler alt öğrenme alanındaki

kazanımlarına uygun olarak geliştirilen etkileşimli ortamın Nielsen’in

sezgiselleriyle alan uzmanları tarafından incelenmesi ve (3) bu tür videoların

geometri öğretimde kullanılabilirliğine yönelik görüşlerin sunulması

hedeflenmiştir. Keşfedici araştırma yönteminde yürütülen çalışmada geliştirmeye

yönelik süreç sonu uzman temelli değerlendirme gerçekleştirilmiştir. Buna göre,

matematik eğitimi alan uzmanları tarafından videonun kullanılabilirliğinin

belirlenmesi adına Nielsen sezgisellerinden yararlanılarak sezgisel

değerlendirme yapılmıştır. Öğretim elemanlarıyla inceleme sonunda yapılan

görüşmeler ile elde edilen veriler nitel olarak çözümlenerek Nielsen

sezgiselleri ile eşleştirilmiştir. Etkileşimli videonun öğretim sürecine ve

öğrenciye sağlayacağı katkılar açısından elde edilen kodlar, tema ve

kategorilerde toparlanarak sunulmuştur. Değerlendirme sonunda öğretim

elemanları geometri öğretiminde öğrencilerin uzamsal becerilerinin gelişimine

yönelik tasarlanan etkileşimli videoyu kullanılabilir bulmuşlar ve bu tür

videoların geliştirilmesine yönelik olumlu tutum sergilemişlerdir. Gelecekte

geometrik cisimlere yönelik geliştirilecek etkileşimli videolarda

kullanıcıların tanıdık oldukları ortam ve arayüzlerin kullanılması, videolarda

soru tabanlı etkileşimlere yer verilmesi ve vidoların günlük hayat ile

ilişkilendirilmesi önerilmektedir.
Oyun Temelli Etkinliklerin Ortaokul Öğrencilerinin Fen Öğrenmesine Olan Etkisini Başarı, Motivasyon, Tutum ve Cinsiyet Değişkenlerine Göre İncelenmesi
Authors: YAZICIOĞLU Selin , ÇAVUŞ-GÜNGÖREN Seda
Published: June 2019

Bu araştırmanın amacı, Işık ve Ses ünitesine ait
oyun temelli etkinliklerin ortaokul öğrencilerinin fen öğrenmesine olan
etkisini akademik başarı, fen öğrenmeye yönelik motivasyon, tutum ve cinsiyet
değişkenlerine göre incelemektir. Araştırma bir ortaokulun iki farklı 6. sınıf
şubesinde gerçekleştirilmiştir. Nicel araştırma yöntemlerinden ön test - son
test kontrol gruplu yarı deneysel desen kullanılmıştır. Veri toplama aracı
olarak; araştırmacı tarafından geliştirilen 6. sınıf Işık ve Ses ünitesine
yönelik akademik başarı testi, fen öğrenimine yönelik motivasyon ölçeği ve tutum
ölçeği kullanılmıştır. Verilerin bağımsız değişkenler arasında anlamlı bir
farklılık olup olmadığı t-testiyle analiz edilmiştir. Araştırmanın sonucuna
göre deney grubundaki öğrencilerin akademik başarıları, fen öğrenimine yönelik
motivasyonları ve derse karşı tutumları kontrol grubu öğrencilerinin puanlarına
göre daha yüksek olduğu, cinsiyet değişkeni açısından başarı ve motivasyona
etkisi olmadığı ancak derse karşı tutumlarının kız öğrenciler lehine olumlu
tutum geliştirdiği görülmüştür.
Physics Teachers’ Assessment Preferences and Difficulties They Experience Related to Performance Based Assessment
Authors: TANUĞUR Bekir , OGAN BEKİROĞLU Feral
Published: June 2019

The purpose of this research
was to determine physics teachers’ assessment methods and their frequency use,
criteria they take into account to grade students’ performances, and cognitive
levels they consider while assessing student learning. Identification of
difficulties that physics teachers have related to performance-based assessment
was also the aim of this research. Survey research design was carried out.
Participants were the physics teachers working in 61 high schools in the
Anatolian side of Istanbul. Some of the conclusions are as follows: Physics
teachers do not only consider where their students are according to performance
goals but also value students’ affective domain such as effort and attitude in
order to give grades to their students. While physics teachers use traditional methods such as
exam more often, they also implement performance assessment and portfolio.  Physics teachers have various difficulties
related to their qualifications, curriculum and university entrance exam in
preparing, implementing, and evaluating performance-based assessment methods.
Basamaklı Öğretim Yönteminin Öğrencilerin Bilişsel Öğrenme Düzeylerine Etkisi
Authors: YILDIRIM YAKAR Züleyha , ALBAYRAK Mustafa
Published: June 2019

Bu araştırmanın amacı;

matematik dersinde uygulanan Basamaklı Öğretim Yönteminin (BÖY) öğrencilerin

bilişsel öğrenme düzeylerine etkisini incelemektir. Araştırmanın katılımcıları,

bir devlet ortaokulunda öğrenim gören 107 altıncı sınıf öğrencisidir.

Araştırmada sontest kontrol gruplu deneysel desen kullanılmıştır. Alan ölçme

konusu 4 hafta süreyle deney grubunda BÖY’e dayalı olarak, kontrol-1 ve

kontrol-2 gruplarında ise düz anlatım ve soru-cevap yöntemleri kullanılarak

işlenmiştir. Tüm gruplara deneysel işlem sonrasında araştırmacı tarafından

geliştirilen Bilişsel Öğrenme Düzeyi Testi sontest olarak uygulanmıştır. Elde

edilen bulgulara göre, BÖY’ün anlama ve kavrama basamaklarını içeren1.bilişsel

seviyede ve analiz etme, değerlendirme ve yaratma basamaklarını içeren

3.bilişsel seviyede düz anlatım ve soru-cevap yöntemlerine göre daha etkili

olduğu belirlenmiştir. Deney, kontrol-1 ve kontrol-2 gruplarının uygulama

basamağının yer aldığı 2. bilişsel seviye puanlarında ise anlamlı farklılık

tespit edilmemiştir.
Humic Acid/Quercetin Coated Magnetic Fe3O4 Nanoparticles For Adsorptive Removal of Cu2+ and Ni2+
Authors: ÖZDEMİR OLGUN Fatoş Ayça , DEMİRATA ÖZTÜRK Birsen
Published: June 2019

Removal
of metals and heavy metals from industrial wastewaters is a serious concern for
water systems. In this study, environmentally friendly natural polymer coated,
cost-effective, easy to operate HA/QR magnetic nanoparticles were suggested to
overcome this problem, for the first time in literature. Fe3O4
magnetic nanoparticles were synthesized with co-precipitation technique and a
core-shell structure was obtained with humic acid sodium salt (HA) solution. At
the second step of the procedure, synthesized magnetic nanoparticles were
coated with quercetin solution. Scanning electron microscopy (SEM), X-Ray diffraction
(XRD) and particle size analyses were performed to enlighten and characterize
the structure. The newly synthesized nanoparticles were used for the batch-wise
adsorption of copper and nickel metals, successfully. Maximum adsorption
capacities were calculated as 14.61 mg/g for copper and 28.30 mg/g using 0.03 g
adsorbents, at pH=7. Adsorption isotherms were evaluated and it was concluded
that adsorption equilibrium fitted to both Langmuir and Freundlich isotherm
models, better correlated with Langmuir isotherm model.
Examination of the Effect of Different Projectile Geometries on the Performance of Reluctance Launcher Using 3D Finite Element Analysis
Authors: SARI Vekil , DALBADAN Ferhat
Published: June 2019

In this paper, the 3D model
of a reluctance electromagnetic launcher was implemented using Maxwell program.
The effect of the different projectile geometries was examined via the model.
The projectile geometry with the highest velocity was determined. After
constructing 3D model of the launcher, projectiles with different geometries
were built and finally various projectiles with different geometries were
analyzed. As a result, it was determined that the tubular projectile with 4 mm
radius hole was the fastest among the tubular projectiles. Among the
projectiles with notches, the projectile with 4 notches was launched faster
than the others when the parameter was the number of notches, and the
projectile with 0.5 mm notch radius was faster than the others when the
parameter was the notch radius. In this paper, the highest velocity was reached
the tubular projectile with 4 mm radius that was built with the 1050 material.
The value of this velocity was 24.12 m/s.
Evaluation of NCEP/NCAR Reanalysis Precipitable Water Data Comparing to Radiosonde Observations for Turkey
Authors: Tan Elcin
Published: June 2019

Precipitable Water (PW) data
of NCEP/NCAR Reanalysis Project (NNRP) model is evaluated by comparing to
radiosonde data obtained from 8 locations of Turkey for the years between 2015
and 2017. Two methods are utilized to extract NNRP data for the observation
locations. In the first method, the nearest NNRP grid point to the radiosonde
locations is selected. The second method is the application of bilinear
interpolation method on NNRP data to include the weighted effects of
corresponding grid locations related with the observation sites. Both NNRP and
radiosonde data have 12 h interval for the times 0000 Z and 1200 Z. PW output
of NNRP model is compared to observations by means of graphical evaluation of
time series, error analyses (Mean Absolute Error (MAE), Root Mean Square Error
(RMSE), and Root Mean Squared Error (nRMSE)), goodness of fit tests (Cp and
PBIAS), and probability density functions (PDF). Error analyses of most of the
observation locations indicate that bilinear interpolation method is better
than utilizing the nearest grid value data which is not obtained by applying
any interpolation technique. Error analyses indicate that nRMSEs of NNRP data
for PW analyses are less than 10% for 6 locations of Turkey (Ankara,
Diyarbakir, Erzurum, Isparta, Istanbul, and Izmir) if it is assumed that the
observations have no errors for the years between 2015 and 2017. nRMSEs of the
other 2 coastal locations (Adana and Samsun) are the same as 13.8% and this may
indicate that local moisture sources of these locations are greater than mesoscale
moisture fields, since NNRP data may not capture local effects well due to its
spatial resolution. Comparisons of probability density functions (PDF) of these
data sets show that NNRP model may not be successful in capturing extreme
values.
Investigation of Benzimidazole Derivates as Corrosion Inhibitor by DFT
Authors: TÜZÜN Burak
Published: June 2019

Benzimidazole derivates are investigated the
activity of corrosion inhibitor molecules.In quantum chemical calculation,
different parameters such as EHOMO, ELUMO, ∆E (HOMO-LUMO
energy gap), electronegativity, chemical hardness, global softness,
nucleophilicity are calculated by Gaussian 09 software. Studied molecules were
performed using the Hartree-Fock (HF) and Becke, 3-parameter, Lee-Yang-Parr
(B3LYP) method with sdd, cep-4g, 3-21G, 6-31G, 6-31++G, lanl2dz basis set in
gas and aqueous phase. We can see the corrosion inhibitor ranking as: 4NPBI
> 4APBI > 2NPBI > 2APBI > 4BPBI > 4MPBI > 4CPBI > PBI in
B3lyp method with sdd and lanl2dz.
Generalized Derivations of Hyperlattices
Authors: OĞUZ ÜNAL Seda , DURNA Hasret
Published: June 2019

In this paper the notion of generalized derivation for
a hyperlattice is introduced and some basic properties of them are derived.
A Finite Element Investigation of the Superelevated Horizontal Curve
Authors: BOSTANCIOĞLU Murat
Published: June 2019

Stress-strain analyses are studied under the bottom of the pavement
layer, and pavement life values are calculated depending on the cross-section
variation because of the superelevation in horizontal curves. For this purpose,
1st principal total mechanical strain values are analyzed with the
superelevation values changing between 0-8 (%) and the different positions of
wheel contact pressure. Finite element method is used for analysis. According
to results of the study, it is obtained that pavement life decreases with the
increasing superelevation, in the case of 8% superelevation and decreasing the
distance to pavement edge, pavement life decreasing gets to 34%.
Electrochemical Synthesis and Characterization of ZnO Nanocomposite Copolymer Containing Fluorescent Feature Dye
Authors: KILAVUZ Esra , TURAÇ Ersen , ŞAHMETLİOĞLU Ertuğrul
Published: June 2019

BODIPY
(boron dipyrrolmethene) has attracted the attention of scientists although the synthesis
of BODIPY from the fluorescent dye class is challenging, there are many
applications such as fluorescence, ion / molecule and pH probes, sensors, redox
active molecules, metal chelators, cellular imaging, photodynamic therapy, drug
delivery materials and photovoltaic applications and energy storage. Firstly,
it is synthesized with difficulty in synthesis but attractive fluorescence
active monomer. Then, by electrochemical method, a conductive copolymer, which
is an innovative material, was synthesized. The nanocomposite was synthesized
with the help of a potentiostat using Zno nanoparticles to increase the
strength and conductivity properties of the obtained semiconducting material
and its existence was determined by advanced technological devices such as
SEM-EDX, AFM-Raman. Characteristic peaks of inorganic and nano-scale compounds
such as ZnO are observed in the fingerprint region and weak / medium in the
conventional FT-IR device. This makes it difficult to qualitatively diagnose
the compounds by infrared spectrometry. Raman spectroscopy, however, has been
preferred for the determination of nanoparticles because it is relatively
laborious, such as ICP-MS, and is not a complex spectral region such as FT-IR.
Ecotoxic Effects of Cerium Oxide Nanoparticles on Bacteria
Authors: ÖZKALELİ AKÇETİN Merve , ERDEM Ayça
Published: June 2019

In this study, the ecotoxic effects of cerium oxide nanoparticles (CeO2 NPs) on both gram positive Bacillus subtilis and gram negative Escherichia coli bacteria were investigated. CeO2 NPs were prepared in synthetic water solutions having different water contents (low, median and high ionic strength and conductivity, pH 5.5 and 6.5). Bacteria were exposed to CeO2 NP solutions in absence and presence of light conditions for 1 h. Different NP concentrations (10, 100, 500 and 1000 mg/L) were used, and environmental scanning electron microscopy imaging was performed for morphological examination of the bacteria. Results showed an aggregation of NPs relating to both high NP concentrations and high ionic strength of the water solutions. Regardless of the test condition, CeO2 NPs highly inhibited the bacterial growth.
On The Synchronization of Van Der Pol-Duffing Oscillator
Authors: Kındıkoğlu Selahattin , Yazıcı Rıfat
Published: June 2019

The
most well known property of chaotic systems is their sensitivity to initial
conditions. In this work the criterion presented in literature for
synchronizing two chaotic systems is applied to a system consisting of two Van
der Pol-Duffing oscillators. First, the route to chaos is investigated for the
Duffing oscillator. Furthermore, the Lyapunov function approach is used to
design a high dimensional chaotic system. Then certain subsystems of a
nonlinear chaotic system are synchronized by linking them with a common signal.
Synchronization has been observed when there exists an asymptotic stability and
an appropriate Lyapunov function, also by computing all the Lyapunov exponents
and Kolmogorov entropy.
Analyzing of Production Conditions of 89Zr in the Particle Accelerator
Authors: BULDUK Buğra Gökhun , ÜNAK Perihan , YURT KILÇAR Ayfer , KOZGUŞ GÜLDÜ Özge , TEKİN Volkan
Published: June 2019

Nowadays 89Zr is outstanding PET radionuclide with its physical half-life (t1/2 ~ 78 hours), useful decay specifications and so that it is suitable for antibody-based immuno-PET. Relatively oscillated positrons' low decay energies supply to take high-resolution. 89Zr-labeled radiopharmaceuticals, especially as 89Zr-labeled antibodies applications are getting increase day by day. In this study, calculations about production of 89Zr were done and used (p,n) reaction of 89Y target system. For this Q-value, Threshold Energy, Minimum Coulomb Barrier Energy of the reaction were calculated then the cross-sections of this reaction were found using Empire3.2/MALTA code. After determining the irradiation calculations, the bombardment performed. The irradiation was performed in Ankara Sarayköy Nuclear Research and Training Center, proton accelerator. The cyclotron is IBA type Cyclone-30. Then separation part was done with Dowex resine system. After separation 89Zr from the irradiated target system, radioactive 89Zr was obtained purely.
Analysis of a Random Zeeman Heartbeat Model with Differential Transformation Method
Authors: ORAL Pınar , MERDAN Mehmet , BEKİRYAZICI Zafer
Published: June 2019

In this paper, the differential transformation method is used to examine the random Zeeman Heartbeat Model. Some of the parameters and the initial conditions of the model are taken as random variables with Beta and Normal distributions, respectively. The approximate analytical solution of the random Zeeman Model is obtained and used to find the expectation and variance of the model components. The results from the random models including Beta and normal distributed random effects are compared and the approximate numerical characteristics are obtained for these cases. The approximate formulas are also modified by using Laplace-Padé Method to increase the convergence interval of the approximations.
APT-Pareto Distribution and its Properties
Authors: KINACI İsmail , KUŞ Coşkun , KARAKAYA Kadir , AKDOĞAN Yunus
Published: June 2019

Recently, the APT-family has been introduced as a new family of
distributions. A special case of this family with exponential distribution is
examined in details. In this paper, Pareto is considered as a baseline
distribution in APT-family. Several properties of the APT-Pareto distribution
such as the moments, hazard rate and survival functions are derived. The
maximum likelihood and least square methods are discussed. Simulation study is
also performed to get the bias and mean square errors of estimates. A numerical
example is given to illustrate the capability of APT-Pareto distribution for
modelling real data.
Discriminating between the Lognormal and Weibull Distributions under Progressive Censoring
Authors: KUŞ Coşkun , PEKGÖR Ahmet , KINACI İsmail
Published: June 2019

In this paper, the ratio of maximized likelihood and
Minimized Kullback-Leibler Divergence methods are discussed for discrimination
between log-normal and Weibull distributions. The progressive Type-II right
censored sample is considered in the study. The probability of correct
selections is simulated and compared to investigate the performance of the
procedures for different censoring schemes and parameter settings.
Approximate Bayes Estimation for Log-Dagum Distribution
Authors: TANIŞ Caner , ÇOKBARLI Merve , SARAÇOĞLU Buğra
Published: June 2019

In this article, the approximate Bayes estimation
problem for the log-Dagum distribution with three parameters is considered.
Firstly, the maximum likelihood estimators and asymptotic confidence intervals
based on these estimators for unknown parameters of log-Dagum distribution are
constructed. In  addition, approximate
Bayes estimators under squared error loss function for unknown parameters of
this distribution are obtained using Tierney and Kadane approximation. A
Monte-Carlo simulation study is performed to compare performances of maximum
likelihood and approximate Bayes estimators in terms of mean square errrors and
biases. Finally, real data analysis for this distribution is performed.
Interference-free determination of carmine in food samples using ultrasonic assisted cloud point extraction coupled with spectrophotometry
Authors: ELİK Adil
Published: June 2019

In this study, a simple, green and cost effective method of extraction
and preconcentration of carmine used as a food additive in some food samples
was developed using ultrasonic assisted cloud point extraction (UA-CPE) before
spectrophotometric determination. Carmine was extracted from the aqueous
solution using polyoxyethylenesorbitan monolaurate (Tween 20) as the extraction
solvent in presence of Ni(II) at pH 6.5. Variables such as pH, amount of metal,
temperature, ultrasonic effect, solvent type, type and concentration of
nanionic surfactant have been optimized in detail. Under the optimum conditions,
the analytical characteristics of the method are as follows; linear working
range 1.5-350 μg L-1; the detection limit, 0.4 μg L-1;
and preconcentration factor, 80. The relative standard deviation (RSD%)
obtained for the 10 μg L-1 concentration (n: 5) of carmine was 3.7%.
Recovery values for two different concentration levels were in the range of
94.8-104.7%. The accuracy and precision of the method were evaluated by intra-
and inter-day studies. Finally, the method has been successfully applied to the
determination of carmine in various foods.
Triangles In The De-Sitter Plane
Authors: MERT Tuğba
Published: June 2019

The triangular varieties in the de-Sitter plane were
investigated and the formulas of triangles of non-degenerate    and  
type of triangles were obtained in terms of dihedral angles.
On Solvability of An Inverse Boundary Value Problem For The Elliptic Equation Of Second Order With Periodic And Integral Condition
Authors: AMIROV Rauf , MEHRALIYEV Y.t. , HEYDARZADE N.a.
Published: June 2019

An inverse boundary value problem for a
second-order elliptic equation with periodic and integral condition is
investigated. The definition of a classical solution of the problem is
introduced. The goal of this paper is to determine the unknown coefficient and
to solve the problem of interest. The problem is considered in a rectangular
domain. To investigate the solvability of the inverse problem, we perform a
conversion from the original problem to some auxiliary inverse problem with
trivial boundary conditions. By the contraction mapping principle we prove the
existence and uniqueness of solutions of the auxiliary problem. Then we make a
conversion to the stated problem again and, as a result, we obtain the
solvability of the inverse problem.
On The Inverse Sum In Degree Index and Co Index
Authors: KAYA GÖK Gülistan
Published: June 2019

The inverse sum in degree index of G is specified the
degrees

 and

. Some bounds are found for inverse sum in degree index
in this study. Also, some definitions and relations are obtained in terms of
degrees.
A Simple and Cheap Ultrasound-Assisted Microextraction Procedure For Extraction of Tartrazine in Soft Drinks and Foodstuff
Authors: ALTUNAY Nail
Published: June 2019

In this study, a simple and cheap ultrasound-assisted ionic liquid-based
floating organic droplets microextraction (UA-IL-FODME) has been proposed for
spectrophotometric determination of synthetic food dye (tartrazine) in soft
drinks and food samples. 1-Octyl-3-methylimidazolium tetrafluoroborate
[C8MIM][BF4] and 1-octanol were used as the extraction solvent and dispersant
solvent, respectively. The method is based on extracting the tarrazine to the
ionic phase with the help of ultrasonic effect at pH 5.5. Some experimental
variables (pH, ionic liquid amount, type and volume of dispersive solvent, and
ultrasonic conditions) were studied and optimized in detail. In optimum
conditions, some analytical parameters of the method were as follows. Operating
range, limit of detection, preconcentration factor, recovery % and RSD % values
were 10-700 µg L-1, 3.2 µg L-1, 75, 94.7-104.7% and 2.7%, respectively.
Following comprehensive validation studies, the recommended method was
successfully applied to the extravasation and determination of tartrazine in
soft drinks and foodstuff.
Antimutagenic and Multi-Biological Activities of Smilax excelsa L. Fruit Extract
Authors: EFE Ecehan , YALÇIN Emine , ÇAVUŞOĞLU Kültiğin
Published: June 2019

In this study, antimutagenic, antimicrobial and antioxidant activities
of Smilax excelsa L. fruit extract
were evaluated.  The antimicrobial effect
was investigated by disk diffusion method and the antimutagenic effect was
investigated by Ames/Salmonella/microsom test. The antioxidant properties of S.
excelsa fruit samples were determined by investigating the total phenolic,
flavonoid contents and 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical
scavenging  activity. It was observed
that 200 mg plate-1 fruit extract was found to have a mutagenicity
inhibition as 81% in the absence of S9 mixture and 67% in the presence of S9
mixture against Salmonella typhimurium
TA1535. S. excelsa fruit extract
produced an inhibition zone in the range of 11-16 cm against the tested
microorganisms. Flavonoid and phenolic contents were found to be 0.7985±0.0124
mgQE 100 mL-1 and 11.9847±0.0041 mgGAE 100 mL-1 at the
200 mg mL-1 extract concentration, respectively. The DPPH removal
rate was determined to be 55% at the 200 mg L-1 dose. As a result,
it was observed that the S. excelsa fruit
tissues exhibited a highly antimutagenic activity and has been determined as a
potential natural antimicrobial and antioxidant source.
Electronic properties of double GaAlAs/GaAs and GaInAs/GaAs quantum wells as dependent on well width
Authors: OZTURK Ozan , OZTURK Emine , ELAGOZ Sezai
Published: June 2019

Herein, the electronic properties of double Ga1-x Alx As/GaAs quantum wells (A model) and
Ga1-x Inx As/GaAs quantum wells (B model) have
been examined related to the well width. The wave functions, the subband
energies and the probability densities of these systems under effective mass
approach were determined by the solution of Schrödinger equation. According to
the results obtained, the major diversities of A and B models are the effective
mass and the energy gap. For A model, GaAlAs is the barrier and GaAs is the
well. Whereas for B model, GaAs is the barrier and GaInAs is the well. Also,
the potential depth and the energy levels of A model are continuously smaller
than of B model. The well width has a great impact on the electronic features
of the double quantum well (DQW). These features have a convenient attention
for the purpose of adjustable semiconductor devices.
The Effect of Piranha and Silane Modifications on Boron Nitride Nanosheets (BNNSs) Thin Film Formation
Authors: KURU Duygu , AKPINAR BORAZAN Alev , AY Nuran
Published: June 2019

In this study, the aim was to increase the adhesion between the two
phases (glass substrate and BNNSs film). Surface treatment was provided by TEOS
silane group and piranha solution. The retention times of the glass surfaces in
the piranha solution and the adherence of different ratios of the silane
solution to the glass surface were investigated. Surface characterization was
carried out by Fourier Transform Infrared Spectrophotometer (FT-IR). Scanning
Electron Microscopy (SEM) images were taken to characterize the surface
morphology, the thickness of the thin films and the structure of boron nitride
nanosheets. UV visible spectrophotometer was used to determine the efficiency
of boron nitride nanosheets after the exfoliation process. Surface roughness
tester (Time TR200) was used to determine surface roughness of the thin films.
According to the results, it was observed that the piranha and silane solutions
improved the adhesion of the glass surface. SEM images showed that the silane
was coated on the glass surface and the coating material was retained on the
silane. Excess silane loading caused the structure to deteriorate. Boron
nitride yield was calculated and found to be 54.1% and 34.1% for different centrifugation
rates after exfoliation.
Hydrogen generation by Rhodobacter sphaeroides O.U.001 using pretreated waste barley
Authors: KARS Gökhan , CEYLAN Ayça
Published: June 2019

In
the present study, valorization of waste barley by producing hydrogen (H2)
and 5-aminolevulinic acid (5-ALA) using Rhodobacter
sphaeroides O.U.001 was aimed. Firstly, 3 % (w/v) waste barley hydrolysate
was prepared by treating 3 g of powdered waste barley with H2SO4
in a total volume of 100 mL mixture and then autoclaving this mixture at 121 ºC
for 30 min. Upon generation of fermentable simple sugars by pretreatment and
analytical examination of the hydrolysate in terms of ammonium content, element
composition and light transmittance, various types of growth media containing
various concentrations of sugar (5 - 6 - 7 - 8 g/L) were prepared. The cells
were cultivated in these media under photo-heterotrophic conditions which favor
H2 and 5-ALA generations. pH changes, growth, H2
production and 5-ALA generation were monitored in the media. The results showed
that all the media prepared from 3 % (w/v) waste barley hydrolysate sustained
the cell growth appreciably. The highest OD value (OD660: 1.71) was
attained when using 8 g/L sugar. Furthermore, biological H2
evolution was seen in each bioreactor. In particular, the highest hydrogen
accumulation (0.29 L H2/L) was achieved in 6 g/L sugar-containing
medium. However, 5-ALA was not detected in any of the media. To conclude,
considerable cell growth and biological hydrogen production was achieved using
3 % (w/v) waste barley hydrolysate under the conditions tested but there was no
detectable 5-ALA generation.
Interval-Valued Fuzzy Parameterized Intuitionistic Fuzzy Soft Sets and Their Applications
Authors: KAMACI Hüseyin
Published: June 2019

In recent years, the fuzzy sets, interval-valued fuzzy
sets, intuitionistic fuzzy sets and soft sets, which offer different
perspectives for the structures containing the uncertainties, have attracted
the interest of many researchers. Also, the intuitionistic fuzzy soft sets
produced by combining the intuitionistic fuzzy sets with the soft sets have
been widely studied. In this work, the concept of interval-valued fuzzy
parameterized intuitionistic fuzzy soft set (IVFPIFS set) is introduced. This
set is the generalization of soft sets, fuzzy soft sets, fuzzy parameterized
(fuzzy) soft sets, interval-valued fuzzy parameterized (fuzzy) soft sets,
intuitionistic fuzzy soft sets and fuzzy parameterized intuitionistic fuzzy
soft sets. For the IVFPIFS sets, basic operations such as complement, union and
intersection are defined.  Also, the
properties of these operations are investigated in detail. Lastly, an algorithm
by using the aggregation operators based on the IVFPIFS sets is constructed.
The examples are given to verify the feasibility and validity of the proposed
algorithm.
Determination of Dangerous Parts of the Energy Transmission Line by the Canopy Height Model Produced from LiDAR Data
Authors: BAŞ Nuray
Published: June 2019

LiDAR (Light Detection and Ranging) technique is  preferable method to determine vertical
metric values of  High Voltage Transmission
Lines (HVTL) in global regions and steep land. The importance of these
facilities is increasing day by day because of the necessity of electricity
energy in our daily life. Determination 
of vertical heights is an important problem especially in forested areas
after construction. In this study, metric values of vegetation which violate
vertical safety limits under voltage wires were determined by using Canopy
Height Model (CHM) using LiDAR data. As a study area 450x150 m2 was
selected the existing voltage line in the region between Beykoz District and
Çekmeköy located on the Anatolian side of Istanbul. Firstly, it has been made
conductive classification of HVTL that is using LiDAR classification
techniques.  Also it is determined the
dangerous limits of trees and vegetation in HVTL vertical oscillation. As a
result the comparison of the values of the vertical elevation  with the local methods and  obtained from the LiDAR data yielded a Root
Mean Square Error (RMSE) value of 0.36m was found.
Dose Calculations of SPECT Simulations on Dynamical Targets with GATE / GEANT4
Authors: KUDAY Sinan
Published: June 2019

Simulations of SPECT studies have been taken attention with
the fact that more accurate results can be constructed in medical imaging with developing
computing techniques. As a result, one can visualize new ideas or improvements
with the help of medical simulations before applying on real incidents for
clinical purposes acquiring high level of statistics without harming live
tissues. In this study, we focused on the capability of GATE (a simulation
toolkit for PET & SPECT) that is developed under GEANT4 simulation
framework and applications on the effects such as activity degradations,
displacements and overlapping of the tissues. Energy histograms and dose
calculations are obtained by using built-in tissues and analyzing virtual data
using ROOT analysis software. Results show the magnitudes of effects that may
have a significant disturbance on SPECT images and their dependence on spesific
parameters.
Truncated Truncated Dodecahedron and Truncated Truncated Icosahedron Spaces
Authors: SAVCI Ümit Ziya
Published: June 2019

The theory of convex sets is a vibrant and classical
field of modern mathematics with rich applications. The more geometric aspects
of convex sets are developed introducing some notions, but primarily polyhedra.
A polyhedra, when it is convex, is an extremely important special solid in

. Some examples of convex subsets of Euclidean
3-dimensional space are Platonic Solids, Archimedean Solids and Archimedean
Duals or Catalan Solids. There are some relations between metrics and
polyhedra. For example, it has been shown that cube, octahedron, deltoidal
icositetrahedron are maximum, taxicab, Chinese Checker’s unit sphere,
respectively. In this study, we give two new metrics to be their spheres
truncated truncated dodecahedron and truncated truncated icosahedron.
Investigation of the effect of Aflatoxin B1 and Aflatoxin G1 on DNA Hybridization by Using Electrochemical DNA Biosensor
Authors: GÖKÇE Gültekin , GÖKÇE Songül , ÇETİNUS Şenay
Published: June 2019

Biomolecular
detection has become a current issue together with the increase in
electrochemical sensor studies. The effect of Aflatoxin B1 and Aflatoxin G1 on
DNA hybridization was analyzed with electrochemically by using pencil graphite
electrode. For this purposes; the changes in guanine currents were monitored
before and after hybridization occurred between DNA complementary base
sequences using differential pulse voltammetry (DPV). In the first step of this
work the capture probe was immobilized by wet adsorption onto the surface of
PGE optimizing concentration and immobilization time and then hybridization
event was performed between capture and its target probe. In the second step
the hybridization experiments were repeated using inosine modified capture
probe instead of capture probe which used in the first step. As differently
from the first step the inosine modified probe was interacted with 2 µg/mL and
4 µg/mL of AFB1 for 10 min before allowing hybridization and the same protocol
was repeated for AFG1. The decrease in guanine current after hybridization was
the reference for the genotoxic effects of aflatoxins. The decrease in guanine
oxidations in the cases of 2 µg/mL and 4 µg/mL AFG1 and 2 µg/mL and 4 µg/mL
AFB1 concentrations were found to be 18% and 26 % for AFG1; and 50% and 61% for
AFB1, respectively. AFB1 showed the maximum genotoxic effect to DNA
hybridization.
Psychological aspects of treatment and rehabilitation of patients with adolescent idiopathic scoliosis: research analysis
Authors: Pyatakova Galina V. , Okoneshnikova Olga V. , Kozhevnikova Anastasia O. , Vissarionov Sergei V.
Published: June 2019

Idiopathic scoliosis is a common orthopedic disease of unknown etiology in childhood that limits the patient’s activity for a lifetime. Treatment of idiopathic scoliosis includes both conservative and surgical methods and requires psychological consideration, which is important for the rehabilitation of patient with chronic disease.
Systematic research on the psychological aspects of the treatment and rehabilitation of patients with idiopathic scoliosis in the form of analysis allows us to evaluate the medical and psychological approaches to the problem and to identify the factors contributing to the successful adaptation of the patient to chronic disease situation.
Methodology. We selected the articles related to the psychological aspects of scoliosis and its treatment between 2017 and 2018. The primary selection included 16 publications, of which 2 were survey studies. Earlier foreign and domestic publications were also included in the analysis in order to compare the changes in treatment and rehabilitation approaches.
Literature analysis. Idiopathic scoliosis was considered as a risk factor for psychological discomfort in the forms of stress, negative emotions, anxiety, distortion of the image of “I,” reduced self-esteem, and communication problems. These increase the risk of mental disorders, such as depression, suicidal tendencies, and psychological disadaptation.
Discussion. Analysis allows us to highlight the most important topics in the studies of adolescent idiopathic scoliosis in recent years: topic on mental health/ill health in adolescent idiopathic scoliosis (AIS), theme of the psychological component of pain, topic on clinical psychological and social psychological factors that determine the course of the disease of the patients with AIS, quality of life of a child or adolescent with AIS, issues of psychological resources for adaptation to a chronic disease, topic on parents’ perception of their child’s illness, and topic on the psychological accompaniment of patients suffering from AIS.
Conclusions. A modern approach to the study of idiopathic scoliosis suggests a point of view from a biopsychosocial model of the disease; therefore, it is necessary to consider various factors affecting the patient’s quality of life, including the psychological component of the disease. Psychological support of the treatment should focus on the formation of the patient’s active position in relation to his or her own life and active coping strategies with chronic disease.
Effectiveness evaluation of translingual neurostimulation in motor rehabilitation in children with spastic diplegia
Authors: Ignatova Tatiana S. , Ikoeva Galina A. , Kolbin Victor E. , Sarana Andrey M. , Shcherbak Sergey G. , Volkov Vladislav G. , Kalinina Linda P. , Skoromets Anna P. , Danilov Yuriy P.
Published: June 2019

Introduction. Cerebral palsy is one of the most common non-progressive neurological disorders caused by fetal or infant brain injury. Current rehabilitation for children with cerebral palsy involves a series of measures, including physical training, special massage techniques, physiotherapy, treatment by certain positions and postures, use of supporting orthoses and fixation devices for walking, and special orthopedic suits facilitating verticalization and motor activity of a child. Over the last few decades, computerized stimulators and robotics with virtual reality systems have been actively used in neurorehabilitation. However, most of these systems did not show significant efficiency in rehabilitation of children with cerebral palsy. In the last few years, different non-invasive electrostimulation techniques have been considered innovative and can be applied independently or in combination with existing procedures. One of such techniques is translingual neurostimulation.
Aim. This study aimed to evaluate the effectiveness of a combination of translingual neurostimulation and physical rehabilitation for children with cerebral palsy.
Materials and methods. In this study, we observed 134 children (63 girls and 71 boys) with spastic diplegia aged 2–17 years (mean age is 7.8 years old ± 0.3). Depending on the type of rehabilitation therapy, the patients were divided into two groups: active (main) and control. Active group consisted of 94 children who received standard restorative treatment in combination with translingual neurostimulation, whereas the control group consisted of 40 children who received only standard rehabilitation treatment without translingual neurostimulation.
Results. Both groups of patients showed positive dynamics; however, patients in the active group showed greater improvements as evidenced by all grading scales. Improvements were observed in children of all ages, and the results were mostly stable for 12 months.
Conclusion. Translingual neurostimulation is a novel approach to neurorehabilitation that shows promising results, in addition to its proven effectiveness and safety. As a result of neurostimulation, the patient’s brain becomes more susceptible to the applied therapeutic procedures aimed at restoring motor control and formation of new motor skills, thereby markedly increasing the effectiveness of neurorehabilitation. This study broadens the perspectives in the use and further development of translingual neurostimulation in rehabilitation of children with cerebral palsy.