Journal of College of Education

Abstract
Fe2O3 and Sb doped Fe2O3 thin films with deferent percentage were
intended via spray pyrolysis technique. Effect of Sb doped on optical
parameters was studied utilizing Double beam spectrophotometer in order
to locate transmittance spectra. Absorbance was raised with accretion of Sb
concentration, same behavior was noticed for extinction coefficient. Energy
gap was decreased from 3.25 eV for undoped film to 3.0 eV on 3% Sb-
doping., while Reflectance, absorption coefficient and refractive index
were shown the opposite behavior by decrease their values with increasing
of Sb.

Abstract
In this study, Polystyrene (PS) and polymetyl methacrylate (PMMA)
blends were prepared by solution casting method with weight ratio (0, 5,
10, 15, 20 and 100 %) of PMMA in PS. The samples are then irradiated
using γ-rays with a radiation dose of 0.44 kGry and 1.76 kGry. The effects
of both PMMA concentration and gamma radiation on mechanical
properties (hardness) and dielectric properties of all samples were
investigated at room temperature. The study showed a decrease in the value
of hardness with increase in the weight ratio of PMMA in PS and when
irradiation with a dose of 1.76 kGry radiations and no change in the value
of hardness at the radiation dose 0.44 kGry for all samples. The study of
the dielectric properties (dielectric constant, dielectric loss and loss factor)
of the samples within the frequency range (100 Hz-10 MHz) showed an
increase in the values of dielectric constant, dielectric loss and loss
factor(tan) with increased PMMA concentration and decreased with
frequency increase for all samples before irradiation. After irradiation and
within the same concentration percentage, there was no change in the
dielectric properties at the radiation dose 0.44 kGry and improvement of
the dielectric properties at the dose of 1.76 kGry, where the results showed
a decrease in dielectric loss and loss factor and a small decrease in the
dielectric constant, Indicating the possibility of using these materials with
good dielectric properties in devices related to radiation

Abstract
This paper focuses on the concepts of bi-extended eigenvalues and bi-
extended eigenvectors. It investigates the complex number λ that makes A
and λB Similar or Quasi-Similar operators where A, B are bounded linear
operators defined on Hilbert space ℋ.

Abstract
Al shihabi is one of the highly potential areas when it comes to energy
generated by wind, wind energy is the new source of energy that’s
environment friendly and low in cost non-depletion easy to harnessed by
different users. A general understanding of wind behavior is necessary for the
accurate planning and implementation of any wind energy projects, but due to
the lack of information of wind power at these area further studies of wind is
very important. The goal of this paper is to conduct an investigation on the
wind energy potentials of Al-shihabi area in south of Wassit. For this reason
the wind data was collected for one year from Dec 2014 to Dec 2015 in the
time interval of 10 minutes at heights of 10, 30 and 50 meters then the data
were analyzed using the Weibull probability distribution function and the wind
rose and for the spectral analyzes the Fast Fourier Transform was performed.
With the annual mean wind speed of (6.84) m/sec at 50 m to be used in wind
energy generation as shown in the spectral analysis that the peak was
(185912.078 m/sec/12 hour) at the frequency of (2 Hz) at the 50 m height
throughout the night time but the lowest was (95161.3369 m/sec/12 hour) at
the frequency of (2 Hz) at the 10 m height throughout the night time. The wind
speed during morning hours were higher than that at the night time. While the
governing wind direction at the area was from west-north west and the north-
north west

Abstract
Geometrical shape plays a vital role in computer vision applications. In this
study, a new suggested method used to detect geometric shapes (square and
circle) of different colors (red, green, and blue), and different arrangements
within the same input image. The introduced algorithm classified 256
tested input images at the same time and feedback the recognized index
number to each individual image. These tested images have different
details for the same color target by means occurrences like different in
orientation, position, and partially appeared shape. A new idea of indexing
number used to describe shape and color of input target images for all
possibility of occurrences. There were 42 possible arrangements of image
cases because of the color and shape targets that used in this study. The
introduced algorithm detects shape, and color with an accuracy of 100%

Abstract
Pure and doped polycarbonate (PC) films with various doping ratio of
coumarin dye were prepared by using casting method. The absorption and
transmission spectra for these films were measured using UV/VIS
spectrophotometer technique in order to assessment the type of transition
which was found to be indirect transition. The optical energy gap of
polycarbonate (PC) was (4.24eV) and coumarin dye was (4.08eV), after
doping PC polymer with coumarin dye the maximum energy gap is(4.26eV) in
volume ratio(4ml). Also, the results showed that absorption coefficient,
refractive index, extinction coefficient and real- imaginary part of conductivity
slightly affects by doping.

Abstract
Multi Document summarization is the process of generating single
document from a set of documents. In this paper a new model which based
on computing readability and content coverage for each sentence. The Ray
optimization algorithm used to choose the most suitable sentences to be
included in the final summary. The TAC-2011 dataset used to evaluate the
proposed model for English document only. The performance of the
proposed model is evaluated using ROUGE metric. The calculated results
support the effectiveness of the proposed mode

Abstract
Member nodes in a wireless sensor networks are split into many
virtual sets called cluster. Each cluster will be formed of a cluster head and
cluster members. Clustering techniques are an energy efficient process that
prolong the network lifetime. Intra-cluster communication is the energy
efficient major factor in clustering protocols. The dissipated energy in
intra-cluster will primary depends on the communication between member
nodes and its cluster head. Sensor node which equipped with camera for
intruder detection in a monitoring area, need to transfer the captured image
to cluster head directly. The improvement of powerful compression method
is much needed to minimize the requirement of communication bandwidth;
minimize the redundancy of data packets and to overcome the energy
limitation of wireless sensor. The proposed improved technique has extra
benefit to enhance the saving energy and to eliminate the consumption
energy to prolong the entire network lifetime, by present a significant data
reduction for the tested images.
The experimental results present that the proposed hybrid image
compression scheme which uses distinct image coding scheme based on
wavelet transform that combined effective types of compression algorithms
for further compression. EZW and SPIHT algorithms are types of
significant compression techniques that obtainable for lossy image
compression algorithms. This hybrid technique will improved the
efficiency of compression ratio between 8.1to 31.4%, and will present a
promising preservation energy technique in intra-clustering communication
by the ratio between 17.8 to 36.7% (depends on the specifications of the
tested image), which prolong the entire network lifetime. From the results
obtained, it became clear to us that the image with high color variation has
high compression ratio, lead to get high gain in energy for processing and
transmission the compressed data

Abstract
In this work the thin films of ZnO were deposited at room temperature and
were doped with different concentrations of SnO2 thin films wich equal
(x=0,0.2,0.4,0.6,1).The deposition process was carried out on glass
substrates with a technique (PLD) that included the use of wave length
equal to (1064nm) and the energy its amount(400 mj) and the pulses
number used (200 puls). The structural properties and optical properties of
asـdeposited films were transported out using (XRD), UV–vis and AFM
.The effect of SnO2 content on these Characteristics was investigated
properties by (XRD) show The thin films for ZnO have a hexagonal
system, with wurtzite. type Polycrystalline and numerous peaks [(100),
(002), (101), (012) and (110)] respectively, were show. Moreover AFM
investigation appears no clefts in the created layer. The optical properties
related to the transition and absorption spectra of thin films prepared using
the near-infrared UV spectrometer. The results appear that (T) of Zinc
oxide film in visible domain reachs nearly 34.45%,Optical band gaps were
found to be (2.54, 2.34, 2.33, 2.25 and 2.10) eV for different
concentration of SnO2 (X=0,0.2,0.4,0.6and1) wt% respectively. At (500
nm) extinction coefficient and the refractive index were determined

Abstract
The Cd1-xSnxS thin films were deposited positively on the glass bases by
pyrolysis method. Films have grown in the substrat temperature is 300 ° C.
The thickness of the films (200±5)nm.
XRD files have shown that polycrystalline films the hexagonal structure
grew preferentially along the axis (002). The Optical studies carry direct
transfer allowed. Energy gap Vary from 2.35 to 2.4 eV

Research Summary :
The aim of the research is to identify the relationship between the
thinking patterns and the knowledge skills of the fourth grade students in
mathematics
The research sample consisted of (400) female students of the fourth grade
in some schools of the Directorate General of Education Baghdad / Rusafa
second.
The researcher adopted a test (Al Aamri, 2015) to test the thinking patterns
of the students of the fourth grade of science The scale of skills of
knowledge was adopted in the preparation of paragraphs on previous
studies and literature.
The researcher used the T test and Pearson correlation coefficient to
compare the results.
1- There is a statistically significant difference at the level of (0,05)
between the mean and the mean mean for the grades of the fourth grade
students in the test patterns of thinking and the scale of skills of knowledge
and for the average arithmetic.
2 - There is a relationship of positive statistical significance between the
grades of students in the fourth grade scientific test patterns of thinking and
grades in the scale of skills of knowledge.
In the light of the results of the research, the researcher concluded that the
performance of the students of the fourth grade of science was good in the
test patterns of thinking and the scale of skills of knowledge and
recommended the researcher a number of recommendations and
suggestions.

Abstract
In this research, the dielectric barrier discharge (DBD) plasma system was
designed. This design consists of two electrodes with a diameter (5 cm)
surrounding by Teflon with the top thickness (2 cm) and the bottom thickness is
(2.9 cm). The glass as a dielectric barrier with (2 mm) in thickness was used.
Non-thermal DBD Plasma was produced by applying (16 kV) AC voltage
source between the two electrodes and a glass plate as a dielectric barrier. The
effect of electrodes type on the properties of produced DBD Plasma was studied;
Copper and Aluminum electrode was used for this purpose. Plasma parameters
were calculated by analysis Plasma spectrum measured using optical emission
spectroscopy and using Boltzmann plot method. Electron temperature (Te) found
to be (4.46 eV) and (4.18 eV) for Copper and Aluminum respectively.
Keywords: DBD Plasma, Non-thermal plasma, Boltzmann plot.

Abstract
Optical properties such as absorption coefficient, refractive index, and
extinction coefficients of pure polyvinylacetate (PVAc) and Rhodamine6G
(Rh6G) laser dye doped with PVAc thin films where prepared using casting
method, in order to study the effect of Rhodamine 6G additions on the optical
properties of (PVAc) hosts.
These films were described using UV/VIS technique in order to assessment the
type of transition which was found to be indirect transition.
Fourier Transform infrared (FT-IR) spectroscopy was used to identify the effect
of (Rh6G) on the characteristic functional groups of PVAc.