The important processes that follow the harvesting of various agricultural crops, especially
the cereal crops, the process of sifting and separation of seeds from impurities, in order to
get rid of the impurities that exist with the seeds in the fi
rst degree, and to get rid of the
distorted and damaged seeds in the second degree.
This study was aimed to study the effect of the sieve holes of a local industrial electric
screening machine in the process of sifting and cleaning the seeds of some cereal crops,
and evaluation the performance of this machine, and then determining the optimal sieve
diameters for the seeds of crops studied and economically important in Syria.
The active part of the machine, called the vibrator, consists of three layers of sieves and
four gutters, the first sieve to get rid of large impurities (gravel, cloths, ...), the second
sieve to extract the very large seeds, the third sieve moves the seeds to the graphite
machine, It produces soft impurities (broken and small seeds).
The second sieve was studied. The results showed that the best sieve of the cumin seeds
with holes (0.8 mm) compared with actually used the sieve (1 mm). The best sieve seeds of
holes (1.25 mm), compared with actually used the sieve (1.40 mm). The best sieve for
local lentil seeds with holes (2 mm), compared with actually used the sieve (2.5 mm). The
best sieve of chickpea seeds with holes (5 mm) compared with actually used the sieve (5.5
mm).
Therefore, it is recommended to use the sieves with the holes shown above to screen the
studied seeds instead of the actual sieves used in the screening factories due to their
inaccuracy in the screening process because the diameter of these holes is not consistent
with the sizes of the studied seeds.
The current research aims to study the effectiveness of Rush model in the grading
scale of poor school adjustment College Maladjustment test of the second version of
Minnesota Multiphasic Personality Revision Minnesota test. It also aims to test th
e
effectiveness of the sample of study on the results of the grading scale poor school
adjustment using the accuracy Criteria of the standard error and stability and information
function. The search results after staging reach a form Summary of the scale process saves
time and effort after the staging process listed unit Logit so were some of the vocabulary is
appropriate to exclude according to suitability index note that the deletion of the
vocabulary has not been on a diagnostic basis, according to statistical values for Bilog, and
therefore an instrument enjoy a high level of accuracy extend specialist holistic perspective
for all effects and health problems and social and psychological responsible for poor
school adjustment, note that access to treatment is successful but accurate assessment that
gives reliable results in the treatment process. As it turns out that the best size of the
sample in the staging process is (700) after any medium samples tested small samples
(300) and large samples (2000) and in accordance with the Criteria for the three-precision,
a standard error and stability and function information.
This study aimed at arranging the items of cognitive abilities test (primary battery)
by using Rash s one parameter model , In addition ,different forms for interpreting the
individuals level of ability were carried out. The test was conducted on a
sample of (1081)
students from Lattakia schools and kindergarten . using "SPSS" program and Winsteps for
statistical treatment in accordance with Rasch Model. The results showed the necessity of
omitting (38) items of cognitive abilities test because they were not fitting the model. The
remain items that were left were (172). And proved the validity and the reliability of the
test. Moreover, the present study form criteria for percentiles rank, T scores, and
standardized intelligent quiescent that equal for the different individual ability.
