tarek_ali

Tarek T. Ali

Professor - Professor

Faculty of science

Address: Chemistry Department, Faculty of Science, Sohag University, Sohag, P.O.Box 82524, Egypt

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Publications Which contain the keyword:

Robust methods for hand gesture spotting and recognition using hidden markov models and conditional random fields

2018-11-24 22:56:26 Keywords Hidden Markov models, Feature extraction, , Adaptation model , , conditional random fields, gesture spotting and recogniti,
Robust methods for hand gesture spotting and recognition using hidden markov models and conditional random fields
This paper proposes an automatic method that handles hand gesture spotting and recognition simultaneously. To spot meaningful gestures of numbers (0-9) accurately, a stochastic method for designing a non-gesture model with Hidden Markov Models (HMMs) versus Conditional Random Fields (CRFs) is proposed without training data. The non-gesture model provides a confidence measure that is used as an adaptive threshold to ... Read more

Common random fixed point results with application to a system of nonlinear integral equations

2018-11-28 17:26:34 Keywords Random fixed point, ,
Common random fixed point results with application to a system of nonlinear integral equations
In this paper, we prove a common random fixed point theorem for two pair of weakly compatible mappings in separable Banach spaces. A corollary of the theorem is obtained and an example is given to verify this corollary. An application is given to obtain the existence and unique solution of system of random nonlinear integral equations. Read more

CNS neuro-epithelial tumors

2018-11-28 09:39:55 Keywords medulloblastoma, pineocytoma, ,
CNS neuro-epithelial tumors
recent WHO classifications of ebryonal tumors of CNS and pineal and choroid plexus neoplasms Read more

The mathematical model of reflection and refraction of longitudinal waves in thermo-piezoelectric materials.

2018-11-28 09:37:35 Keywords reflection and refraction, , thermo-piezoelectric materials, Thermoelastic Theories, Smart materials,
The mathematical model of reflection and refraction of longitudinal waves in thermo-piezoelectric materials.
Will be given later Read more

Common Fixed Point Theorems for Weak Contraction Mapping of Integral Type in Modular Spaces

2018-11-28 17:11:15 Keywords Common Fixed Point, ,
Common Fixed Point Theorems for Weak Contraction Mapping of Integral Type in Modular Spaces
In this paper, we prove three common fixed point theorems for weak contraction mappings of integral type in modular spaces. In the first theorem we prove a common fixed point of ρ-compatible mappings satisfying a (ϕ - Ψ)-weak contraction. The second theorem is another version of the first theorem. In the third theorem we study a common fixed point of ... Read more

Adsorption and desorption characteristics of ammonium by natural zeolite mineral

2018-11-22 00:15:19 Keywords , zeolite, ammonium,
Adsorption and desorption characteristics of ammonium by natural zeolite mineral
يهدف البحث إلى دراسة الخصائص الإدمصاصية للأمونيوم بواسطة معدن الزيوليت الطبيعى. Read more

Repellent, Antifeedent and Toxic Effects of Certain Plant Extracts on Cotton Leafworm, Spodoptera littoralis Boisd.

2018-11-18 14:33:36 Keywords repellent, , antifeedent, , plant extracts, , Spodoptera littoralis,
Repellent, Antifeedent and Toxic Effects of Certain Plant Extracts on Cotton Leafworm, Spodoptera littoralis Boisd.
Two plants, i.e. Anthemis melanopodia and Artemesia monosperma were tested against the 4th instars larvae of Spodoptera littoralis (Boisd.) under laboratory conditions. Four crude extracts (Hexane, Chloroform, Ethyl acetate and Ethanol) from each of the two plants used were evaluated by two different technique, i.e. residual films and dipping. Results indicated different percentage of mortality in larval depending on the ... Read more

Cytomegalovirus (CMV) activation in relation to different immunosuppressive induction therapy after renal transplantation

2018-11-27 18:07:20 Keywords CMV, RENAL TRANSPLANTATION, , CMV, IMMUNOSUPRESION,
Cytomegalovirus (CMV) activation in relation to different immunosuppressive induction therapy after renal transplantation
ABSTRACT INTRODUCTION: Cytomegalovirus (CMV) is a common cause of morbidity and mortality among patients receiving chronic maintenance immunosuppression and is often considered the most important infection in renal transplantation. AIM OF THE WORK Our study evaluated the activation of CMV after renal transplantation in relation to different induction therapy comparing with no induction therapy. MATERIALS AND METHODS_:__MATERIALS AND METHODS:_ a ... Read more

Effect Of Sand Compaction Piles on the Behavior of Expansive Soil Mohammed M. A. Hussei

2018-11-19 20:39:54 Keywords Expansive soils., Sand compaction piles, , Replacement area ratio, ,
Effect Of Sand Compaction Piles on the Behavior of Expansive Soil Mohammed M. A. Hussei
One of the most common mitigation heave methods for foundation on expansive clay soil is the full or the partial shallow removal of expansive clay soil and replacement with non-expansive soil, usually used sand cushion (SC). Foundation engineers often suggest some arbitrary thickness for sand cushion without considering the depth of the active zone, which is the zone within which ... Read more

Evaluation and screening using routine chromo endoscopy by indigo carmine dye for early detection of rectosigmoid lesion in sohag university hospital ,Egypt

2018-11-26 00:07:37 Keywords chromoendiscopy , evaluation , ,
Evaluation and screening using routine chromo endoscopy by indigo carmine dye for early detection of rectosigmoid lesion in sohag university hospital ,Egypt
يعد سرطان القولون و المستقيم ثالث اكثر انواع الاورام السراطنية شيوعا في جميع انحاء العالم بعد سرطان الرئة و سرطان الثدي . ثلثي الاصابة بسرطان القولون و المستقيم تحدث في المناطق الاكثر نموا في العالم . اشتملت هذه الدراسة علي 85 مريضا حضروا الي وحدة المناظير التابعة لقسم امراض الباطنة بالمستشفي الجامعي بسوهاج لاجراء الفحص التقليدي بالمنظار السفلي لاسباب مختلفة ... Read more