TOJSAT - Volume 6 - Issue 3 - July 2016
A NEW FUZZY CONTROLLER FOR ADJUSTING OF PITCH ANGLE OF WIND TURBINE Zafer Civelek, Murat Lüy, Ertuğrul Çam, Göksu Görel
Abstract:
This paper presents a study on the control of the pitch angle of the wind turbine blades.
As fuzzy logic control method is preferred. Output power is stabilized by controlling the pitch angle
of the wind turbine blade. They were also able aerodynamic braking at high wind speeds. Fuzzy
logic control method is selected as the reason; Fuzzy control is independent of changes in system
parameters. The fuzzy is also a suitable control method for nonlinear system. Consequently, using
the fuzzy controller wind turbine blade pitch angle has been successfully controlled. Thus, the output
power stability and aerodynamic braking is achieved successfully.
AN OVERVIEW OF MONTE CARLO (MC) SIMULATION METHOD AND BASIC PRINCIPLES IN MEDICAL RADIATION AND RADIATION DETECTORS Hüseyin Ozan Tekin, Ümit Kara, Asghar Mesbahi
Abstract:
Monte Carlo (MC) method is a numerical test to simulate an event by using the
numbers from 0-1. Monte Carlo method in studies for optimizing the device to be used in
experimental studies, or studies to be carried out before it is used extensively as experimental.
Also widely used in the medical imaging field next to the particle detectors in nuclear physics
studies. Monte Carlo method extensively in studies for optimizing the device to be used in
experimental studies or studies to be carried out before it is used as experimental. In recent
years, MC method is widely used to simulate interaction of medical radiation with tissues and
environment. In this study we discussed some specific samples along with general information.
It can be concluded that MC is a powerful tool for pre-experimental studies.
DESIGNING A SYSTEM WHICH GENERATES ELECTRIC ENERGY FROM WIND FORCE OF CARS Fatih BAŞÇİFTÇİ, Muhammet GÜMÜŞSOY
Abstract:
Although studies about solar energy are continuing for 20 years, little studies are
done about transforming of wind energy into electric energy of traveling cars (Anonym, 2013,
Anonym 2013-1) and almost no application is done in this area. The most important reason of
this study is transforming the wind energy of a traveling car into an electric energy and to use
it in case of need. The most important feature of this design is procuring energy in all conditions
when the car is moving. Considering the reasons, it is obvious that this study will contribute to
our country academically and also in commercially speaking.
EVALUATION OF EXPERIENCE REGARDING THE USE OF MOBILE BANKING: AN APPLICATION ON ACADEMICS Vural ÇAĞLIYAN, Muammer ZERENLER, Zeynep ERGEN IŞIKLAR, Mehmet ÇOBAN
Abstract:
Today, technology the gradually increasing competitive conditions trigger and
play role in its development is of course intensively used in banking sector as well. By
means of technology, quickly, easily, and cheaply presentation of banking services to
consumer provides competitive advantages to the banks. In the recent years, growing of
mobile sector and becoming widespread of smart devices have generated some innovations
in banking sector, and the concept of mobile banking has emerged. As a result of the
developments in mobile communication sector, consumers want that their demands
and desires are immediately satisfied and, in most issues, suggest their emotions and
thoughts, satisfactions and dissatisfactions quickly and effectively by means of smart
phones. Hence, mobile banking is evaluated as the most effective banking application that
provides competitive advantages for banks.
In this study, in order to determine the experiences of academic staff of Seljuk
University regarding the use of mobile phones, the data collected with the method
of face to face survey were analyzed by SPSS program and the results were evaluated
under 12 headings as customer satisfaction and loyalty, perceived price level, level
of using technology, perceived availability, perceived easiness of use, security and
privacy, perceived compliance, trust, social effect, facilitative conditions, perceived cost,
and worry.
INDEPENDENT COLLEGE, A UNIQUE INNOVATION, IN THE HISTORY OF CHINESE HIGHER EDUCATION- THE TEN YEAR PRACTICE AND EXPLORATION OF NANKAI UNIVERSITY BINHAI COLLEGE Ting Wen, Min Guo, Dongsheng Zhang
Abstract:
Independent college is widely regarded as a unique innovation in the history of
Chinese higher education with its advantages of “excellent education, independent
administration and private ownership”. Born and developed in the popularizing process of
Chinese higher education, independent college has made remarkable achievements and
outstanding contributions to Chinese higher education after 15-year hard work and great efforts.
With the deepening of all-round reform in Chinese education, independent college now faces a
grave challenge to its existence and development. Catching the opportunity when government
introduces new policies, living up to the expectations of students and their parents, deepening
the reform and innovation, realizing the goal of building high-level independent college through
reform and innovation–all have become important tasks for us to study and solve. This thesis is
based on the ten-year practice and exploration of Nankai University Binhai College and the
rational analysis of founding background, types and existing problems of independent colleges.
It studies the university-running model, which features the cooperation with Chinese
government, prestigious universities listed in 211 Project and 985 Project, the government of
economically developed areas and leading enterprises. Therefore the sustainable and healthy
development of independent college will be unswervingly promoted.
INVESTIGATION OF EVAPORATIVE COOLING EFFECTIVENESS ON THE PERFORMANCE OF AIR – COOLED CHILLERS Sezgi KOÇAK SOYLU, İbrahim ATMACA, Ayla DOĞAN
Abstract:
The cooling performance of air – cooled systems highly depends on ambient air
conditions. It is widely known that, the performance of the system decreases when the inlet
air temperature increases. This effect especially occurs in summer when the ambient air
temperature is high and the cooling load is at its peak value. In order to decrease the inlet air
temperature, evaporative cooling can be used. Evaporative coolers can be well combined with
air – cooled chillers to decrease the inlet air temperature of condenser. Evaporative cooling
is simple and economical way to cool the inlet air since it does not require any mechanical
refrigeration and consumes very low power by fan and pump. Therefore combining these two
systems can be considered as energy efficient method. As known, evaporative cooling
performance strongly depends on the effectiveness of the evaporative cooler. In this study,
studies on air cooled chillers with evaporatively cooled condenser have been assessed and the
evaporative cooling effectiveness on the performance of air – cooled chillers is investigated.
INVESTIGATION OF PHYSICAL COMFORT CONDITIONS AND USERS’ SATISFACTION IN COTTAGE HOSPITALS: THE CASE OF NILUFER / BURSA, TURKEY Filiz ŞENKAL SEZER, Yasemin ERBİL
Abstract:
Health structures are institutions; which is designed to contribute to the health of a
society and included necessary diagnosis and treatment units in this regard. Family health
centers as known as cottage hospitals are established in the first step of these organizations in
Turkey. Today, public family health center buildings provide the climatic, audial and visual
comfort in some standarts. However, users are not satisfied from provided conditions and they
always voice some problems. In this study is aimed assessment of indoor comfort conditions
with the opinion of users regarding dimensional use, indoor temperature, thermal comfort,
indoor air quality, audial comfort, natural ventilation and natural lighting condition. to
determine user satisfaction during using buildings is a commonly used method in terms more
efficient use of current buildings and to direct to future desings.
Research methods of this study; literature review of the subject which is analysed and reviewing
on the information fields related to indoor space requirements, preparing a questionnaire for the
user experience’s feedback in designed area, evaluating the survey stage in order to understand
the degree of satisfaction of space performance requirements was defined. Nilüfer is selected
area for survey, is the province of Bursa which is the Turkey's 4th largest city. Selecting the
most heavily used in 10 of a total of 26 family health centers in Nilufer district, 100 people of
each center's as total 1,000 people were interviewed. 14 questions were asked to users. The data
obtained from the questions which is related demographics features, dimensional use, indoor
temperature, thermal comfort, indoor air quality, natural ventilation and natural lighting
condition, audial comfort is evaluated by the chart. The obtained data under this study will open
new horizons to design the new health centers and would help the designers and authorities
about current arrangements is being considered.
INVESTIGATION OF VIBRATION DAMPING IN THE PASSENGER SEAT Lutfiye DAHIL, Abdurrahman KARABULUT, M. Serhat BASPINAR, I. MUTLU
Abstract:
In this study, it was aimed to decrease the vibration reaching to passenger from the
legs of vehicle seats. For this purpose, seat legs were manufactured from aluminum foam
material by utilizing vacuum casting method. The aim of this study is to provide a comfortable
and healthy to travel by decreasing the vibration coming from the chassis of the intercity buses.
In experimental study, 2 seats having different legs were placed into the same type of vehicles.
It was performed in two different experimental studies. In the first, modal analysis was used
and Freguency Response Function (FRF) graphs were obtained. The second acceleration
measurement was made and acceleration graphs were obtained. Both graphs obtained by this
method were compared to two legs. It was observed that legs made of foam material shows
better damping propertiesin vibration than 2 mm thick sheet metal original legs. Besides, it was
observed that the foam material improved the comfort and delayed the tiredness threshold.
ONTOLOGY BASED RECOMMENDER SYSTEM WITH USING DISSIMILAR USERS Musa MILLI, Mehmet MILLI
Abstract:
Rapid development of the e-commerce, increase in the product range and customers
in the past years makes it difficult to find the products that customers are looking for, in terms
of customer made confusion and led to time losses. These developments have necessitated the
development of new customer-oriented marketing strategy. Recommender system directs
interests of customers to the product which they can like and buy. So the companies that use
these systems increase profits by providing strategic advantages while helping customers.
Collaborative Filtering (CF) is a successful technique used in recommendation system. They
try to find out costumer’s interest in a new product, based on similarities of customers’ previous
ratings. In the literature, these calculations are performed with the principle which is: similar
users have similar tastes. In this paper these calculations are performed with thoughts that
dissimilar users have dissimilar tastes, too. Currently algorithm of collaborative filtering suffers
from some problems such as cold start and sparse data. At the same time this paper aims to
propose ontology based solution for cold start problem.
STRUCTURAL ANALYSIS OF LINEAR SWITCHED RELUCTANCE MOTOR DESIGNED EI CORE Yusuf AVÅžAR, Ahmet FENERCÄ°OÄžLU
Abstract:
In this study, structural analysis of the linear switched reluctance motor (LSRM)
the horizontal move axis, made of EI cores were investigated. Designed this linear motor is
working as switched reluctance motors. The force is carried out around 1600 N in previous
electromagnetic analyzes. In parallel with it, 1600 N force is selected for the structural
analysis. Force is applied to the motor's axis of movement (Z axis). Under this force, the
deformation of the motor stator and translator, stretch ratio and strength of material has been
computed with the structural finite element method (FEM). Especially structural analysis,
stretching ratio of the translator poles in z axis and with it structural effects on the bearing
diameter of the stator have been examined.
SUGGESTION MECHANISMS OF SYNTHESIS A NOVEL CHIRAL COMPOUND: (R) AND (S)-1-(2-BENZYLOXY-3-METHOXYPHENYL)-2,2,2-TRICHLOROETHYL BENZENESULFONATE Mohammed Hadi Al–Douh
Abstract:
A novel chiral compound was synthesized from the reaction between the new benzimidazole,
2-(2-benzyloxy-3-methoxyphenyl)-1H-benzimidazole 8 and benzenesulfonyl chloride 9 in dry
dichloromethane DCM at 45oC for 10 hr in the presence of 4-N,N-dimethyl aminopyridine DMAP 12
as a catalyst was expected to obtain 2-(2-benzyloxy-3-methoxyphenyl)-1-(phenylsulfonyl)-1Hbenzimidazole,
10. Unfortunately, a novel chiral compound (R) and (S) 1-(2-benzyloxy-3-
methoxyphenyl)-2,2,2-trichloroethyl benzenesulfonate 11 was obtained as a single crystal (59% yield)
with melting point of 58.4°C. We suggest preliminary mechanisms of the formation of 11 by two ways:
a) It is formed benzimidazolide ion 13 that is attacked from benzene sulfonic acid 15, which is
hydrolyzed from 9 to form N-(2-aminophenyl)-2-(benzyloxy)-3-methoxybenzimidine
benzenesulfonate 17, or b) that benzimidazole 8 is hydrolyzed to its basic compound benzyl o-vanillin
18, which it attacks the 4-(dimethylamino)-1-(phenylsulfonyloxy) pyridinium chloride 21 to form (2-
(benzyloxy)-3-methoxyphenyl) (phenylsulfonyloxy) methylium ion 22. However, the mechanism of
this reaction still is under investigation.
THE DETERMINATED COMBUSTION PROPERTIES OF FIR WOOD IMPREGNATED WITH FIRE-RETARDANTS Cemal Özcan, Ş. Kurt, R. Esen, M. Korkmaz
Abstract:
In this study, the effects of impregnation material and impregnation
methods on combustion properties of Fir (Abies bornmulleriana, Mattf.) have been
investigated. The four different method was used for impregnation process.
Combustion test was performed according to the procedure of ASTM-E 69 standards.
According to the test results fire retardant materials and impregnations methods was
found to be the most successful fire retardant chemical and long-term dipping method
in Fir.
TURKISH STOCK MARKET DEPENDENCY TO INTERNATIONAL MARKETS AND EXCHANGE RATE Mustafa Koray CETIN
Abstract:
In a financially integrated global market, the returns of countries’ stock markets are
partially determined by world risk especially arising from developed countries. Global crisis
and even some local crisis have contagious effect on almost every market. In this study, Turkish
stock market dependency to world market and regional markets, effect of exchange rates to
Turkish stock market return are examined with international CAPM and APT. Stock markets
indices, some proxies of world market portfolios and exchange rates are main data for the study.
Due to time series properties of data, conditional models are more proper to use. Conditional
models consider time dependent properties of variables especially when there is
heteroscedasticity problem. Those models reveal relation better between Turkish Stock market
and international stock markets. Expected result of study is that Turkish stock market is exposed
to risk arising from international factors and market correlations.
USE OF ACTIVE LEARNING METHODS FOR MECHANIC PROGRAMS IN VOCATIONAL SCHOOL Yasar Bilgin
Abstract:
Teaching program of universities aim to help the students to memorize
information. Also, students can use information when they are necessary. It is one of the main
condition of learning and teaching process. There are two types of learning. We can classify
them as active and passive learning. Today, active methods are gaining importance
increasingly. In practice, active learning course compared with conventional treatment
courses as understanding of the processing method, and the concept of keeping the memory
efficiency. In this study, the effect of the active learning method has been the subject of
machine programs. For this purpose, the effects of the active learning method ın the machine
technician course examined. The results show that practıces have strong bonds with active
learning methods. In this study will respond the relationship between employer expectations
and high academic results. Taking part of ındustrial machine technician who graduated from
the program is related to this topic. Also, learning sufficient information for a successful
recovery and practice for professional work is related to this topic. If we implement effective
educational methods and grow up technican who has knowledgeable about his area, we can
have staff member who can adapt changes easily and we can achieve this success. This study
deals with susceptibility to these issues and willingness of the teaching staff, emphasizing the
need for improvements in application behavior. Implementation of active learning techniques
in machine technician education depends on efforts of the teaching staff and students.
Because the information can be obtained from new sources very quickly. It affect our world
in the 21st century. It is clear that the education area requires developments beyond the
traditional education system and new learning methods. Therefore, active learning methods
are becoming increasingly important.
