SUBSTITUTION OPERATORS IN THE SPACES OF FUNCTIONS OF BOUNDED VARIATION BVα2 (I)

Wadie Aziz,Jos´e Atilio Guerrero,Nelson Merentes 대한수학회 2015 대한수학회보 Vol.52 No.2

The space BVα2 (I) of all the real functions defined on interval I = [a, b] ⊂ R, which are of bounded second α-variation (in the sense De la Vall´e Poussin) on I forms a Banach space. In this space we define an operator of substitution H generated by a function h : I × R → R, and prove, in particular, that if H maps BVα2 (I) into itself and is globally Lipschitz or uniformly continuous, then h is an affine function with respect to the second variable.

SUBSTITUTION OPERATORS IN THE SPACES OF FUNCTIONS OF BOUNDED VARIATION BV²_α(I)

Aziz, Wadie,Guerrero, Jose Atilio,Merentes, Nelson Korean Mathematical Society 2015 대한수학회보 Vol.52 No.2

The space $BV^2_{\alpha}(I)$ of all the real functions defined on interval $I=[a,b]{\subset}\mathbb{R}$, which are of bounded second ${\alpha}$-variation (in the sense De la Vall$\acute{e}$ Poussin) on I forms a Banach space. In this space we define an operator of substitution H generated by a function $h:I{\times}\mathbb{R}{\rightarrow}\mathbb{R}$, and prove, in particular, that if H maps $BV^2_{\alpha}(I)$ into itself and is globally Lipschitz or uniformly continuous, then h is an affine function with respect to the second variable.

Knowledge, Attitudes and Practices of Sudanese Women Regarding the Pap Smear Test and Cervical Cancer

Almobarak, Ahmed O,Elbadawi, Ayman A,Elmadhoun, Wadie M,Elhoweris, Mohammed H,Ahmed, Mohammed H Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.2

Background: Despite the established role of the Pap smear test (PST) in prevention and early detection of cervical cancer, it is still rarely practiced in Sudan. Many challenges hinder the establishment of an effective cervical cancer screening program, including socio-cultural factors. Therefore, this study aimed to investigate the knowledge, attitudes and practices (KAP) of Sudanese women with regard to the Pap smear test and cervical cancer. Materials and Methods: A total of 500 married women aged 14 to 58 years were recruited from obstetric clinics, hospitals and universities in Khartoum in 2014. Data were collected using a standardized, pretested questionnaire that inquired socio-demographic characteristics and their KAP about cervical cancer and the PST. Results: More than 52% of participating women were above 30 years of age, and the majority (78.8%) were university degree holders. A total of 486 (97.2 %) of participants were resident in urban areas of Khartoum State. However about 48% of the respondents had never heard about PST, and only 15.8% of the participants had undergone a Pap smear test previously; 46.6% (233/500) knew that the human papilloma virus (HPV) was the causative agent, but only 39.2% (196/500) had heard about HPV vaccination, and only 11.4% (57/500) had received the vaccine. However 68% of the respondents agreed to do Pap smear if properly informed about the test and 75.4% of the respondents agreed to participate in a cervical cancer screening program. Conclusions: Despite a high educational level, less than half of our participants had accurate knowledge about cervical cancer, HPV, and cervical cancer screening. Health education about cervical cancer, HPV and sexually transmitted infections and the role of PST in cervical cancer prevention are crucial when designing interventions aimed at improving cervical cancer screening for Sudanese women.

Excitation and Formation Conditions of Monotonic Shock Waves in Magnetized Plasmas with Superthermality Distributed Electrons

E. F. El-Shamy,M. Mahmoud,E. S. Al-Wadie,A. Al-Mogeeth,E. K. El-Shewy 한국물리학회 2019 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.75 No.1

Nonlinear excitation and the properties of ion-acoustic shock waves (IASWs) in a magnetoplasma model composed of viscous ions with two-temperature superthermality distributed electrons are studied by employing the well-known reductive perturbation analysis to obtain a nonlinear Zakharov-Kuznetsov-Burgers equation (ZKBE), which admits the excitation of nonlinear IASWs in superthermal plasmas. Applying the tanh method, we discuss the solutions of the ZKBE. The asymptotic behavior and the stability of the analytical shock wave solution are studied. In general, nonlinear ion-acoustic disturbances are found analytically to exhibit only monotonic shock structures in the proposed model. For different situations, the effects of the dispersion and the dissipation coefficients on the profiles of the shock structures are discussed. The findings here demonstrate that the effective features of nonlinear IASWs depend strongly on the dispersion and the dissipation coefficients, which include physical parameters such as the superthermality of cold electrons, the cold superthermal electron-to-ion number density ratio, the ion kinematic viscosity and the ion cyclotron frequency. The current work may be helpful for an advanced comprehension of the physical nature of shock waves in astrophysical plasma situations.

Potential Benefit of Metformin as Treatment for Colon Cancer: the Evidence so Far

Abdelsatir, Azza Ali,Husain, Nazik Elmalaika,Hassan, Abdallah Tarig,Elmadhoun, Wadie M,Almobarak, Ahmed O,Ahmed, Mohamed H Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.18

Metformin is known as a hypoglycaemic agent that regulates glucose homeostasis by inhibiting liver glucose production and increasing muscle glucose uptake. Colorectal cancer (CRC) is one of the most common cancers worldwide, with about a million new cases diagnosed each year. The risk factors for CRC include advanced age, smoking, black race, obesity, low fibre diet, insulin resistance, and the metabolic syndrome. We have searched Medline for the metabolic syndrome and its relation to CRC, and metformin as a potential treatment of colorectal cancer. Administration of metformin alone or in combination with chemotherapy has been shown to suppress CRC. The mechanism that explains how insulin resistance is associated with CRC is complex and not fully understood. In this review we have summarised studies which showed an association with the metabolic syndrome as well as studies which tackled metformin as a potential treatment of CRC. In addition, we have also provided a summary of how metformin at the cellular level can induce changes that suppress the activity of cancer cells.

Cytomorphologic Patterns of Breast Lesions in Sudanese Patients: Lessons Learned from Fine Needle Aspiration Cytology

Almobarak, Ahmed Omer,Elhassan, Taiseer Mohamed,Elhoweris, Mohamed Hassan,Awadalla, Heitham Mohammed,Elmadhoun, Wadie Mohamed Yasin,Ahmed, Mohamed Hassan Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.8

Background: Cytology for breast lesions is a safe, rapid and cost-effective with a high specificity and sensitivity. Objective: To determine the cytomorphologic patterns of breast lesions identified among a group of Sudanese patients. Materials and Methods: This study included 759 patients undergoing either a fine needle aspiration FNA, nipple discharge (ND) smears or breast skin scraping (SS) at a cytology clinic in Khartoum. Clinical and demographic data were reviewed. Stained smears were categorized into: inadequate sample, normal breast, benign lesion, suspicious, or malignant neoplasm. Results: Of the 759 cases, 734 (96.71%) were FNA, 18 (2.37%) ND and 7 cases (0.92%) SS. For 28 cases, FNA was done under ultrasound guidance. Females were 720 (94.86%). Benign lesions were 423 (55.75%) and 248 (32.67%) were malignant and 77 (10.14%) of smears were normal without any detected abnormality. Ten (1.31%) cases were suspicious for malignancy, and only one case (0.13%) was reported as inadequate. Most lesions were observed among the age group 30 years and above. Conclusions: Most patients investigated have benign lesions, one third of cytological smears were malignant. FNAC is a useful tool for investigating breast lesions in limited-resource settings.

The Effectiveness of Intercede Communication Methodologies on Language Skills: Case of EFL of Morocco

Wadi Batyouk,Jung-Ha Park 한국글로벌문화학회 2021 글로벌문화연구 Vol.12 No.2

이 연구는 최초의 우편 시스템의 발전에서 현재까지 인간의 일상생활의 모든 영역에 영향을 미치고 있다는 전제하에, 지속적으로 통신 방법론이 개발되고 그 사회적 요구를 충족시키고 있는 상황에서 상호통신 방법의 효과에 대한 탐구의 필요성을 확인하는 차원에서 시도하였다. 현대인들은 삶의 모든 면에서 문화적 방법론에 의존하는데, 21세기에 통신방법론은 그들이 쉽게 그것을 포기할 수 없는 요인이 되었다. 특히, 교육은 상호통신 방법론의 사용으로부터 혜택을 받는 분야 중 하나이다. 이 방법론은 "교육의 중요한 역할 중 하나는 다수 학생들을 위한 현장기회를 평준화 할 수 있는 능력"이라는 존 킹의 주장과 같이, 본 연구에서 주장하는 네 가지 기술로 학습을 변환하기 위한 강력한 도구를 개발할 필요가 크다. 모로코 EFL 과정에서 1) 학생들이 모바일 애플리케이션 및 YouTube와 같은 특정 학습도구를 사용하여 언어기술을 향상시키는 효과를 이 연구의 결과에서 확인하였다. 2) 학생과 교사는 기술을 통해 학습 효과를 개선할 수 있다. 3) 대부분의 학습자들은 교육기술에 의존하고 학습과정을 외부에서 도입이 가능하다는 점에서 상호통신 방법론의 적용을 긍정적으로 평가할 수 있다. This research explores the intercede communication methodologies have swept all areas of human daily life, from the invention of the first postal system to now, as it has developed and met its needs. People rely on cultural methodology in every aspect of life. It has become a necessity that they cannot give up on it easily. Education is one of the domains that benefit from the use of intercede communication methodologies. This methodology has different powerful tools for transforming learning in its four skills as John king informed that “One of the most important aspects in education is its ability to level the field opportunity for students.” -John King, U.S. Secretary of Education. That is to say, students and teachers can benefit from technology to develop learning. This can be seen in the findings of this research, in which EFL students use extensively certain tools such as mobile applications, laptops, and YouTube to enhance their speaking skills. Besides, most of them depend on technology in education and agree on the idea to use in school and outside it.

Gain-Clamped L-Band EDFA Incorporating An Inline Fiber Bragg Grating

Sulaiman Wadi Harun,Nizam Tamchek,Harith Ahmad 대한전자공학회 2002 ITC-CSCC :International Technical Conference on Ci Vol.2002 No.7

FEM simulation of a full-scale loading-to-failure test of a corrugated steel culvert

Amer Wadi,Lars Pettersson,Raid Karoumi 국제구조공학회 2018 Steel and Composite Structures, An International J Vol.27 No.2

This paper utilizes 3D FEM to provide deeper insights about the structural behaviour of a 6.1 m span steel culvert, which was previously tested under extreme loading. The effect of different input parameters pertaining to the backfill soil has been investigated, where the structural response is compared to field measurements. The interface choice between the steel and soil materials was also studied. The results enabled to realize the major influence of the friction angle on the load effects. Moreover, the analyses showed some differences concerning the estimation of failure load, whereas reasons beyond this outcome were arguably presented and discussed.

Gain Control in Two-Stage L-Band EDFA

Sulaiman Wadi Harun,Nizam Tamchek,Harith Ahmad 대한전자공학회 2003 ITC-CSCC :International Technical Conference on Ci Vol.2003 No.7