120 chicken thighs samples (60 fresh chicken thighs samples - 60
frozen chicken thighs sample) were collected from different
commercial shops in Hama city.
In this research, We present a scientific advanced developed
study and keeping up with new studies and technologies of very
short-term electrical load forecasting and applying this study for
electrical load forecasting of basic Syrian electrical p
ower system
by studying this prediction for next four hours according to the
criterion applied in the Syrian Electricity Ministry with ten minutes
intervals ,we call it "Instant electrical load forecasting".
Mobile wireless sensor network (MWSN) is a wireless ad hoc network that consists
of avery large number of tiny sensor nodes communicating with each other in which
sensornodes are either equipped with motors for active mobility or attached to mobile
objectsfor passive mobility. A real-time routing protocol for MWSN is an exciting area of
research
because messages in the network are delivered according to their end-to-end
deadlines
(packet lifetime) while sensor nodes are mobile. This paper proposes an enhanced
realtime
with load distribution (ERTLD) routing protocol for MWSN which is based on our
previousrouting protocol RTLD. ERTLD utilized corona mechanism and optimal
forwardingmetrics to forward the data packet in MWSN. It computes the optimal
forwarding nodebased on RSSI, remaining battery level of sensor nodes and packet
delayover one-hop. ERTLDensures high packet delivery ratio and experiences minimum
end-to-end delay in WSNand MWSN compared to baseline routing protocol. . In this paper
we consider a highly dynamic wireless sensor network system in which the sensor nodes
and the base station(sink) are mobile.ERTLD has been studied and verified and compared
with baseline routing protocols RTLD,MM-SPEED , RTLCthrough Network Simulator-
2(NS2)
شبكات الحساسات اللاسلكية
RTLD (Real-time with load distributed routing) Protocol
شبكات الحساسات اللاسلكية النقالة
بروتوكول التوجيه بالزمن الحقيقي مع توزيع الحمولة
بروتوكول التوجيه بالزمن الحقيقي المحسن مع توزيع الحمولة
معدل استقبال الرزمة
خيار التوجيه الأفضل
مؤشر قوة الاشارة المستقبلة
WSN(wireless sensor networks)
MWSN) Mobile wireless sensor networks)
ERTLD ( Enhanced Real-time with load distributed routing) Protocol
PRR(Packet Reception Rate)
Optimal Forwarding (OF)
RSSI: Received Signal Strength Indicator
MN(Mobile Node)
MS(Mobile sink)
المزيد..
Phase Shifting Transformer has played an important role in electrical networks to improve
their efficiency because it has the ability to control power flow in electrical transmission network
that can lead to power loss minimization. PST technology
is considered as mature technology
which is used by transmission system operators. These transformers provide an integrated solution
to control power due to the advantages of low economic and high reliability.
In this research an exposure to the classification of phase shifting transformers and their
application then a simple model for Phase shifting transformer is suggested without seeking in the
details of transformer, this model presents the result for using PST via modeling phase shifting
voltage, this model is performed using Matlab/Simulink program according to differential
equation. Depending on the mathematical model which has been built in an Matlab environment
we have a model shows the impact of this transformer through the representation of output voltage
, results are verified using Neplan program via a case study demonstrated the role of this type of
transformers in controlling power flow in transmission system achieving remarkable power loss
reduction and improving voltage profile
This research includes a numerical study using Finite Element Method aims to
evaluate the ability and accuracy of using Non-destructive Impact Response Method in the
assessment of length and cross-sections of intact concrete pile (not deformed) in
both time
and frequency domains. Therefore, an appropriate numerical model depends on the
modeling of both impact force (impulsive load) and distributing medium (pile + soil) and
insert them in computing software ABAQUS was carried out. The numerical model was
verified corresponding to field measures obtained from literature review and the results
showed good agreement between measures and numerical results. Furthermore, the model
was applied on a typical example in order to study vibration distribution in the pile due to
impulsive load applied on pile top. Mechanical response curve of intact pile was obtained.
Then, both of length and cross-section area of the pile were determined. Finally,
parametrical study of most important factors (stiffness of soil surrounding the pile and
length of pile embedded in the soil) effect on vibration distribution resulted from impulsive
load applied on pile top. The parametrical study was carried out in two domains; first one
was time domain depending on the direct analysis of particle displacement and velocity
and the second was frequency domain depending on analysis of pile mechanical response
curve. The results of this research enables to use the proposed numerical model to
numerically obtain the time history of particle displacement and velocity in addition to the
curve of mechanical response computed in the pile top and forms reference diagrams
which is used later to compare with similar diagrams resulted from field test of executed
piles. As a result, pile integrity test and detecting of defects in the piles if any. In addition,
the limits of the use of both analysis methods adapted in research and choose the best
between them according to the case study.
طريقة العناصر المنتهية
Finite element method
اختبار سلامة الأوتاد
تجارب الصدم غير المخربة
السجلات الزمنية للإهتزازات
تابع قابلية الحركة
منحني الإستجابة الميكانيكية للوتد
المجالين الزمني و الترددي
Pile Integrity Test
impulsive load
nondestructive impact tests
vibration time history
mobility function
pile mechanical response curve
time and frequency domains
ABAQUS
المزيد..
The Steel/RC composite Column-beam connection joint is
considered one of the most important subjects in framed
construction. Ductility has the most influence among other
factors that control the behavior of this joint, and the nonlinear
behavior
of this joints when subjected to large and cyclic
loading is dominated by several parameters. These parameters
reflect the assembled components of the joint for every
component has a distinguished material and therefore specific
behavior under the loading corresponding to it.
To evaluate the ultimate load of composite columns " steel – concrete "
having square or circular steel tubes filled hollow section with concrete
and Longitudinal reinforcing steel bars and subjected to centrical load and
Exposed to the standard f
ire in accordance with ISO 834 curve along and
from all sides,Fire duration ,buckling length of the column , geometrical
and mechanical properties of each material for structural and reinforcing
steels and concrete were in the base of the method, given in the French
National Annex of EN 1994-1-2.
The purpose of this study is to offer help to patients through the employment of
databases applications of existing and available telecommunication systems in medical
services ,particularly treatment. So that it can be possible to avoided what can
be avoided
of health disasters that a human being encounter without warning. This study examines
how modern technologies can be employed in controlling and processing some vital signs
of human beings,particulary those who suffer some health problems affiliated with some
diseases ,and keeping these problems under control in order to maintain the stability of the
patients health statues.
The vital signs that the study is applied to are blood pressure, pulse and blood
glucose, since any of change in the value of any of these signs, positive or negative, may
cause the patient to have a sudden health problems.
شبكات الحساسات اللاسلكية
العلامات الحياتية
شبكات الحساسات اللاسلكية الحيوية
بروتوكول التوجيه بالزمن الحقيقي
استدعاء الطرق عن بعد
Vital signs
(WSN (wireless sensor networks
(WBSN (wireless body sensor networks
RTLD (Real-time with load distributed routing) Protocol
(RMI (Remote method invocation
المزيد..
this paper reviews definition of tall buildings, a brief
history of their development which can be broadly classified into
three periods, and the primary factors of their evolution. In
addition to studying their lateral load resisting systems with
some
examples of each one, we presented seven major structural
systems each one suit different architectural forms and allows
specific height.
The water quality in Al Thawra Lake was getting worst recently because of the
increscent of the concentration of nutrients, which reached the lake from point and
nonpoint sources. The Geographic Information System GIS was widely used in the last
d
ecades in evaluating quality of water depending on models operates within GIS one of
these models is The BASIN software (Best Assessment Science Integrating Point and
Nonpoint sources)which used in this research .The Pload model(Pollution load) which is
one of the BASIN models was used to estimate the pollution loads. The Pload was run by
using satellite image, Digital Elevation Model (DEM30), land use map, and export
coefficient values. The result showed that the total annual pollution loads of TP&TN are
TP=11543 kg/yr ,TN=61367 kg/yr that came out of the watershed of the lake, Open maki
and rock out crops are the dominate contributors to TP load in the watershed for about 30
%of total TP load, while Olives and citruses are the dominate contributor to TN load in the
watershed for about 33 %of total TN load, the model results also indicated that the
nonpoint sources are the main contributor to TP&TN loads in the watershed for about
80%of the total TP loads while only 20% from point sources, and for about 75%of the total
TN loads from nonpoint sources while only 25% from point sources.