Journal of College of Education

Abstract:
A piezoelectric layer process of heighten plasticity lightweight besides
firstly self-controlled using one topic persistent in electrospinning
technique. Piezoelectric layers device shows a three-layer assembly that
PVDF. The poly (vinylidenefluoride) nanofiber layer fabricated to be
between two Aluminum layers foil as electrodes as a sandwiched shape.
Then the completed generator was totally coated by a thin layer of
polydimethylsiloxane (PDMS) to keep it in situation of packaging a device.
Here, established highly piezoelectric in which flexible layers and
increased the output voltage from (600 -800 mV) by using the same force
and frequency. The fiber layer of structure crystal for PVDF was
characterized by using XRD in range between (5-35°), FTIR in range
between (500– 4000) cm-1, and using liquid nitrogen for cross sections by
wetted the three membrane layers of the device in addition beforehand
imaging (SEM) the samples coated by gold as a thin layer. Finally by
means of oscilloscope the output voltage for devices were indicated on
behalf of piezoelectric membrane.

Abstract
OCR is an artificial intelligence, recognition English characters have been
solved by a huge number of studies last 3 decades, but Arabic letters which
used by at least one billion people have not been definitively resolved yet,
therefore In this study proposes an effective approach to the recognition of
off-line of 121 Arabic characters which is involves of creating database (DB),
contains standard image for 59 main character target and Characters Indexing
Table (CIT), contains indices of 62 main character target to be used in
recognition process. The (DB) is designed to identify the main body of the 59
unknown characters. The (CIT) is responsible of identifying the secondary
components, the number of dots or hamza that is associated with the body of
character and their position. The mean square error classifier (MSE) is used in
the recognition stage, where each character is assigned the best 6 matches with
the lowest MSE. The lowest MSE value is 0.025 and the highest value is 0.09

Abstract
The use of new technology in the manufacture of electric water heaters by
using the technology of carbon nanotubes rather than "electric heater, when
the passage of electricity generates thermal energy This thermal energy by the
induction of carbon nanotubes that launch the infrared, which leads to heating
The internal reservoir of the heater and thus heating the water, where the
carbonate heat up in a few minutes and do not need a lot of energy during the
process of startup and this reduces the electricity used to about 75% compared
to the normal heater as the heater A new 80-liter needs to (1.5) amp only and
good efficiently to heat the water. It is possible to use different types of
heaters in terms of the capacity of the heater and the same working
principle.The use of carbon nanotubes in water heaters is considered the safest
system. "There is no possibility of incineration due to the highest standards of
safety and safety in manufacturing. It is waterproof and insulated." Tama is
"protected" from moisture and weather conditions. It is not flammable or
combustible. Maintenance of its relatively long operational life ", an
environmentally friendly heating system with no emission of toxic gases.

Abstract
Cadmium selenide thin films of thickness 200 nm were thermally
deposited by vacuum evaporation method at room temperature on glass
ground. The effects of irradiated time on the structure and optical
characteristic of these films were studied. The films are hexagonal structure
confirmed by XRD analysis. XRD pattern of the irradiated film at 72 hour
shows an improvement of crystallinity. The optical measurements of CdSe
films were carried out in the wavelengths range from 300-900 nm. The
transmitance spectra shows that irradiated samples are less transmittance
than non – irradiated one. The increase in irradiated time leads to a
decreases in energy band gaps from 2.49 eV to 2.33 eV

Abstract
Artificial Text in videos plays an important role for automatically indexing
video content, since much semantic information is carried with them. In this
paper an effective algorithm is presented to detect artificial text region in the
frames of news videos by utilizing the geometric properties of MSER regions.
The video is segmented into a sequence of frames and then the frames that
contain a caption at most are selected to be the input to proposed algorithm.
Firstly the Maximally Stable Extremal Region (MSER) is applied for each frame
to locate a large number of individual text characters as MSERs regions. Then,
candidate's text regions are filtered to remove non-text regions by using
geometric properties with thresholds technique. To accurately detect text in the
video frame, three types of geometric properties are utilized: centered of regions,
mean intensity and bounding box. Finally, text regions are merged, highlighted
and recognized using Optical Character Recognition (OCR) system directly.
Experimental results indicate that proposed algorithm provides 0.9445 recall
and 0.8095 precision accuracy rate for selected video frames. The performance of
the proposed algorithm is satisfactory for artificial text detection under different
size, color and background.

Abstract:
ZnTe nanoparticles thin films were prepared at different substrate
temperature (325, 425,525,625K) on a glass substrate by using Pulsed
Laser deposition technique (PLD) under vacuum about 10-5 Torr. The Nd-
Yag Q-Switch laser with wave length (1064 nm), frequency (5 Hz), and
fluency (0.477 J / cm2) were employed to deposit ZnTe thin films. The as
deposited of ZnTe nanoparticles thin films were investigated by X-ray
diffraction (XRD), Scanning electron microscopy (SEM), Electron
dispersion X-ray (EDX), Atomic force microscopy (AFM) and UV-VIS
Spectrophotometer. XRD investigations confirmed the increasing in the
crystallite size about (42.64, 44.02, 82.66 and 86.64nm) with increase
substrate temperature in the range (325K, 425K, 525K and 625K),
respectively.

Abstract
This paper discuss the failure censored sample taken from Weibull failure
model with two parameters (p: shape and: scale parameter).We estimate the
two parameters(P, ????) by maximum likelihood and white estimators ,
Assuming that we have a failure censored sample with the failure times of
(r)items that failed. This type of censored is necessary in life testing
application and in statistical quality control test

Abstract:
In this paper, pure PVA and phenol red/PVA films with several doping
ratio of phenol red (5, 10, 15, 20 and 25) ml have been obtained by solution
casting method. The optical properties were measured in range of
wavelength (200-650) nm. The experimental results show that the
absorbance of phenol red /PVA films was increased with increasing the
doping ratio of phenol red. The values of energy gap were decreased with
increasing the doping ratio of phenol red from (5.00 to 4.40) eV.

Abstract
Methyl-ammonium lead tri iodide (CH3NH3PbI3) have been attracted
attention in the domain of solar energy because of their great absorption
coefficient and little temperature fabrication. Perovskite thin film have been
prepared by solution processing. Thin film after dropped in the laboratory
ambient states by drop casting, it made by two step procedure PbI2 and
CH3NH3I at the glass substrates. The analysis deals the structural properties, x-
ray diffraction, and scanning electron microscope of these films with tetragonal
structure. Space group I4/mcm (Z=4), a=8.800 Å,c=12.685 Å ,crystallite size
was 340 nm, dislocation density 8.19 ×10-4 lines/m2 and micro strain 9.93 ×10--
8 lines-2/ m4

Abstract
The study deals with monitoring the air masses associated with the
air depressions passing over Iraq using remote sensing techniques collected
from the meteorological satellite (Meteosat). Analysis was carried out
based on visible and thermal bands. The analysis results researcher can
identify the types of masses associated with the air depressions depending
on the characteristics Spectroscopy of the Bands waveforms, through the
reflectivity and resulting colors in the false-colored composite image by
performing the analysis and interpretation of the spectral and radiometric
enhanced image, by using different programs suchas ERDAS, GLOBEL
MAPPER, ENVI and ArcGIS

Abstract
The study of different criteria for climatic comfort and its application to
Iraq as a virtual temperature provides a scientific material useful in
understanding the reality and different levels of comfort, it helps in
determining the monthly patterns of the physiological climate, and in the
appointment of the best times and places and most suitable for the comfort
of the human body for the exploitation and development for tourism
purposes, In addition to other practical benefits in various fields such as
environmental, geographic, medical, military and other sciences