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171.
Raul Rabinovici Ahmad Alyan Ronen Rabinovici 《Journal of The Franklin Institute》2012,349(6):2163-2170
The paper presents a stochastic calculations algorithm that mimics the photon polarization experiments of quantum mechanics. This experiment is usually used to introduce the quantum computing approach. Stochastic filters that operate on stochastic numbers in a mode similar to that of polarized filter operation on random polarized photons are introduced. 相似文献
172.
Ahmad Mohammad Qablan Amjad Abuloum Jamal Abu Al-Ruz 《Journal of Science Education and Technology》2009,18(3):291-300
A series of interviews and classroom observations were conducted with a group of in-service science teachers, students, school
principal, and computer lab supervisors, from a “Discovery” female school in Jordan to assess their utilization of information
and communication technology (ICT) in teaching science. The study also intended to determine how these participants were using
ICT and if they had any internal and external impediments in the way of the effective integration of ICT in the teaching of
science. Results showed that some participants were using ICT creatively in their science teaching. However, despite considerable
political pressure to increase ICT use in the classroom, most expressed frustration at the lack of ICT tools, support from
the school, from the Ministry of Education, and from the surrounding community. The article proposes possible resolutions
to help these participants overcome their impediments. Some of the suggested resolutions for the internal impediments include
involving teachers in preparing the school’s time-table, equipping the school with more ICT tools and offering more training
courses for teachers. However, the suggested resolutions for the external impediments involve (1) The Ministry of Education
to rethink the administration of board examinations, (2) The school to sacrifice scoring higher in board examinations for
preparing more creative and more versatile students’ perspectives. 相似文献
173.
A. Aziz Khater Ahmad M. El-Nagar Mohammad El-Bardini Nabila M. El-Rabaie 《Journal of The Franklin Institute》2019,356(16):9254-9285
In this study, an adaptive interval type-2 Takagi-Sugeno-Kang fuzzy logic controller based on reinforcement learning (AIT2-TSK-FLC-RL) is proposed. The proposed controller consists of an actor, a critic and a reward signal. The actor is represented by the IT2-TSK-FLC in which the antecedents and the consequents are interval type-2 fuzzy sets (IT2FSs) and type-1 fuzzy sets (T1FSs), respectively, which are named A2-C1. The critic is represented by a neural network, which approximates the optimal guaranteed cost in the control design to ensure the system stability for all admissible uncertainties and noise. The use of a reward signal to formalize the idea of a goal is one of the most distinctive features of RL. Thus, the proposed controller evolves in time as a result of the online learning algorithm. The parameters of the proposed controller are learned online based on the Lyapunov theorem to guarantee the stability, overcome the shortcomings of the gradient descent, such as the local minima and instability, and determine the learning rate of the IT2-TSK-FLC controller. Furthermore, the critic stability is discussed for determining the optimal learning rate. The proposed controller is applied to uncertain nonlinear systems to show its robustness in reducing the effect of system uncertainties and external disturbances and is compared to other controllers. 相似文献
174.
Rizwan Ahmad Anil K. Tripathi Payal Tripathi Ranjana Singh Sushma Singh Raj K. Singh 《Indian journal of clinical biochemistry : IJCB》2008,23(4):328-333
Chronic myeloid leukemia is a myeloproliferative disorder with a unique rearrangement, the Philadelphia chromosome. Oxidative
stress, a pervasive condition of an increased number of reactive oxygen species, is now recognized to be prominent feature
of various diseases and their progression. Thus antioxidants, which control the oxidative stress state, represent a major
line of defense regulating overall true state of health. The relationship between antioxidants status and levels of well-known
markers of oxidative stress that are measured as lipid peroxides and oxidized proteins reflect better health indices and postures.
The aim of this study was to evaluate the role of oxidative stress in pathophysiology of Chronic myeloid leukemia by measuring
the circulating plasma lipid peroxide levels in terms of malonyldialdehyde, total lipid hydroperoxide and oxidized proteins
as protein carbonyl whereas antioxidant status were estimated in terms of reduced glutathione and total thiol in plasma of
Chronic myeloid leukemia patients. The present study included 47 Chronic myeloid leukemia patients and 20 age-and sex-matched
healthy subjects. Out of 47 Chronic myeloid leukemia patients, 31 were in chronic phase (CML-CP) and 16 in accelerated phase
(CML-AP). The median age of Chronic myeloid leukemia patients was 33 years and that of controls was 32 years. Oxidative stress
and antioxidant status in plasma were evaluated by spectrophotometric procedures. There was a significant increase (p<0.05)
in plasma malonyldialdehyde, total lipid hydroperoxide and protein carbonyl levels in Chronic myeloid leukemia patients as
compared to healthy subjects. Our results also showed that plasma malonyldialdehyde and protein carbonyl levels were markedly
elevated (p<0.05) in both chronic phase (CML-CP) and accelerated phase (CML-AP) as compared to healthy volunteers. Antioxidant
status was found to be significantly decreased (p<0.05) in Chronic myeloid leukemia patients and its phases as compared to
healthy participants. It could be concluded that oxidative stress may be associated with the pathophysiology of Chronic myeloid
leukemia. 相似文献
175.
176.
Hui Min Low Lay Wah Lee Aznan Che Ahmad 《International Journal of Inclusive Education》2018,22(3):235-251
In this study, the pre-service teachers’ attitudes towards the educational inclusion for students with Autism Spectrum Disorder (ASD) were investigated to identify their attitudinal patterns and predictors. An attitudinal survey was conducted with 264 pre-service teachers in a teacher training programme in Malaysia. The study involved 151 special education pre-service teachers and 181 pre-service teachers in Special Education, Sciences, and in English teacher training programmes, in order to identify the effects of teaching specialisations and societal attitude on their inclusive education attitudinal measures. The findings revealed that the special education pre-service teachers were less in favour of the total inclusion of students with ASD in the mainstream, when compared with the non-special education pre-service teachers. The findings also revealed the combined effects of societal attitude and a categorical teacher training model in shaping the pre-service teachers’ attitudes towards inclusive education for the students with ASD in Malaysia. Such combined effects offered a perspective to explain the delay in the implementation of inclusive education, and also the prospect of its future development in the Southeast Asian region. 相似文献
177.
178.
In this paper necessary and sufficient conditions are derived for a two-variable positive real function to be the driving-point impedance of certain classes of doubly-terminated lossless ladder networks. Specifically, two classes of networks are studied: (a) the class of networks in which the lossless structure is a cascade of p1- and p2-variable two-ports, each two-port having its transmission zeros at the origin and/or at infinity; (b) the class of networks in which the lossless structure is a lowpass or highpass ladder network with series arms having p1- and p2-type elements in series and shunt arms having the p1- and p2-type elements in parallel. It is indicated that via suitable transformations of the variables, conditions for many other types of ladder structures can be derived. 相似文献
179.
A mathematical theory is developed for the nonlinear flexural response of an elastic, infinitely long, thin cylindrical shell submerged in an acoustic medium. The non- linearities examined pertain solely to the elastic field. Application of the theory is displayed in the context of a specific interaction problem. Inadequacies resulting from the use of existing interaction theories which employ a linear shell theory are displayed and critically examined. 相似文献
180.
Haseeb Ahmad Khan Samia Hasan Sobki Abdullah Saleh Alhomida Shaukat Ali Khan 《Indian journal of clinical biochemistry : IJCB》2007,22(1):65-70
This study reports the utilization of serum fructosamine and blood glucose for the screening of gestational diabetes mellitus
(GDM). Blood samples from 165 pregnant women were analyzed for fasting blood glucose (FBG), random blood glucose (RBG) and
serum fructosamine. The actual fructosamine levels were corrected for serum protein (c-Fruct) for more precise presentation.
Two cut-off values of FBG (>5.3 mmol/L and >7.0 mmol/L) and RBG (>7.8 mmol/L and >11.0 mmol/L) were used to classify hyperglycemic
subjects for subsequent evaluation. The average values±standard deviations for FBG, RBG and cFruct were 5.865±1.95, 7.767±3.21
and 2.387±0.47 mmol/L, respectively. FBG levels were significantly correlated with RBG (Pearson correlation=0.597, P<0.001).
Significant correlations were also observed between cFruct and FBG (Pearson correlation=0.673, P<0.001) or RBG (Pearson correlation=0.641,
P<0.001). Out of 165 subjects, 24 (14.5%) cases were classified as hyperglycemic on the basis of FBG>7.0 mmol/L or RBG>11.0
mmol/L; use of lower cut-off values resulted higher frequencies of hyperglycemia. Whereas, a combined criteria of FBG>5.3
mmol/L and cFruct >2.5 mmol/L predicted 35 patients as the most probable hyperglycemic as compared to 32 patients identified
using the criteria of RBG >7.8 mmol/L and cFruct >2.5 mmol/L. These criteria were associated with 4.8% and 3.6% false-positivity
at the expense of 3.6% and 3.0% false-negative outcomes, respectively. The levels of FBG, RBG and cFruct were significantly
higher in hyperglycemic groups (irrespective of grouping criteria) as compared to the respective normal groups. In conclusion,
these findings clearly indicate that the paired values of cFruct with FBG or RBG could help in filtering high-risk individuals
for OGTT and therefore avoiding a unnecessary OGTT. 相似文献