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Scattering of the Radial Focusing Mass-Supercritical and Energy-Subcritical Nonlinear Schrödinger Equation in 3D

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Advances in Pure Mathematics 2013年第1期3卷 164-171页

作者： Mujahid Abd Elmjed M-Ali amadu fullah kamara Department of Mathematics Faculty of Education Kassala University Kassala Sudan Department of Mathematics Faculty of Pure and Applied Sciences Fourah Bay College University of Sierra Leone Freetown Sierra Leone

This paper studies the global behavior to 3D focusing nonlinear Schrodinger equation (NLS), the scaling index here is (0 详细信息

This paper studies the global behavior to 3D focusing nonlinear Schrodinger equation (NLS), the scaling index here is (0

关键词： NLS Blows-Up in Finite Time Supremum Precompactness

Improved Conditions for the Existence and Uniqueness of Solutions to the General Equality Constrained Quadratic Programming Problem

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Open Journal of Optimization 2012年第2期1卷 15-19页

作者： amadu fullah kamara Mohamed Abdulai Koroma Mujahid Abd Elmjed M.-Ali Department of Mathematics Faculty of Education Kassala University Kassala Sudan Department of Mathematics Faculty of Pure and Applied Sciences Fourah Bay CollegeUniversity of Sierra Leone Freetown Sierra Leone Department of Mathematics University of Science and Technology of China Hefei China

This paper presents an approach that directly utilizes the Hessian matrix to investigate the existence and uniqueness of global solutions for the ECQP problem. The novel features of this proposed algorithm are its uniqueness and faster rate of convergence to the solution. The merit of this algorithm is base on cost, accuracy and number of operations.

关键词： Hessian Matrix Global Solutions Equality Constrained Quadratic Programming Existence and Uniqueness of Solutions Lagrangian Methods Schur Complement Methods

培训对员工绩效的影响分析 ——以塞拉利昂公路运输公司为例（SLRTC）

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培训对员工绩效的影响分析 ——以塞拉利昂公路运输公司为例（SLR...

作者： MARIAMA ALIMA kamara 河北大学

学位级别：硕士

现代企业的成功越来越取决于其人力资源的效率和有效性。支撑组织成功的一个重要因素是拥有一支蓬勃发展、有能力、能力非凡的员工队伍,他们通过自己的技能、知识和奉献精神成为成功的支柱。本研究深入探讨了塞拉利昂公路运输公司背景... 详细信息

现代企业的成功越来越取决于其人力资源的效率和有效性。支撑组织成功的一个重要因素是拥有一支蓬勃发展、有能力、能力非凡的员工队伍,他们通过自己的技能、知识和奉献精神成为成功的支柱。本研究深入探讨了塞拉利昂公路运输公司背景下人力资源开发举措与组织绩效之间的复杂关系。本文试图严格分析各种关键假设,包括广义培训计划在多个领域提高员工绩效的程度。此外,它旨在观察和量化培训实施的频率和强度对生产力成果指标的影响。这一综合分析将涉及评估在各自行业中表现最佳的组织所影响的整体绩效效率。为了实现这些研究目标,本文采用了定量方法,通过向SLRTC的员工分发结构化问卷来收集数据。这项实证调查的结果揭示了培训和发展活动与员工绩效指标之间的强烈正相关关系,突显了人力资本投资对生产力的巨大影响。该报告强调,企业,特别是物流和运输行业的企业,迫切需要为培训和专业发展活动分配足够的资源,这些活动经过精心调整,以符合其业务的具体目标。此外,该研究强调了管理决策在设计和实施有效培训计划方面的重要作用。它表明,如果没有由各级所有者、董事和管理人员带头的战略方法,组织将缺乏从这些举措中获得最佳利益所需的实际行动步骤。最终,这项研究为实地工作做出了宝贵贡献,它将培训和组织效能作为在塞拉利昂公路运输公司动态环境中运作的相互支持的合作伙伴。这些发现对人力资源管理实践具有重要意义,并突出了未来研究工作的途径。研究结果揭示了培训和发展活动、绩效改进和组织成功之间的紧密联系。它描述了商业实体的不可或缺的因素,特别是在物流和运输方面,为与其职责相近的培训项目分配足够的资源。首先,该研究支持管理者是培训项目产出的关键决定因素。本文讨论了培训与组织绩效之间的联系,提出了一个涵盖SLRTC案例研究的战略性人力资源开发模型。通过这种方式,公司可以同时处理两个方面;培训举措和组织成功率的提高将紧密结合在一起,带来高质量的工作环境和实质性的成长和发展。

关键词：培训发展组织绩效塞拉利昂公路运输公司(SLRTC) 塞拉利昂政府人力资源-人力资源公司巴士-CB

Assessing Barriers to Mental Healthcare Interventions for Deaf People in Ghana

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Journal of Biosciences and Medicines 2024年第1期12卷 29-51页

作者： Wisdom Kwadwo Mprah Juventus Duorinaah Lyla Adwan-kamara Rebecca Tawiah Department of Health Promotion and Disability Studies Kwame Nkrumah University of Science and Technology Kumasi Ghana Ghana National Association of the Deaf Accra Ghana Ghana Somubi Dwumadie (Ghana Participation programme) Accra Ghana

While mental health issues are increasingly gaining attention in Ghana, little is known about the situation among deaf people. This study assessed the mental health care needs of deaf people in Ghana. A descriptive design, consisting of interviews and focus group discussions, was used to collect data from 97 participants. Findings indicated that participants had limited knowledge on mental health issues. Mental health stigma, inaccessible mental health information and exclusion from mental health programmes were the major barriers hindering access to mental health care services. This study bridges the knowledge gap and provides evidence for the implementation of deaf-friendly services.

关键词： Access Barriers Deaf People Mental Health Caregivers Civil Society Organizations

Transurethral Resection of the Prostate (TRUP) for the Treatment of Benign Prostatic Hyperplasia (BPH) in Central Cote D’Ivoire: Indications and Results

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Open Journal of Urology 2024年第2期14卷 27-38页

作者： Kouassi Patrice Avion N’diamoi Akassimadou Venance Alloka Sadia kamara Koffi Dje Urology Department Bouaké University Hospital Bouaké C&#244te d’Ivoire

Background: Benign prostatic hyperplasia (BPH) is defined histologically as adenomyofromatous hyperplasia of the transitional zone of the prostate. It remains the most common benign tumour in men over the age of 50, and transurethral resection of the prostate (TURP) remains the surgical treatment of choice. Objectives: To determine the indications and present our results of transurethral resection of the prostate. Patients and Methods: After obtaining approval from the ethics committee of the private hospital and the university hospital of Bouaké (Côte d’Ivoire), we conducted a cross-sectional study of transurethral resection of the prostate (TURP) to treat benign prostatic hyperplasia (BPH) between January 2021 and April 2023. All patients and their families were informed beforehand and had signed an informed consent form. All patients with benign prostatic hyperplasia (BPH) with ultrasound weight of less than 80 grams were included. The following parameters were studied: age, reason for consultation, ultrasound prostate weight of benign prostatic hyperplasia, indication for TURP, duration of operation, blood loss, duration of post-PRT urinary drainage, length of hospital stay, morbidity and mortality, and outcome. Results: 39 patients with a mean age of 58.3 years (57-77 years) underwent transurethral resection of the prostate (TURP). TURP was indicated in 46.15% (n = 18) of cases of refractory acute urinary retention with failure of the urinary catheter removal test, 17.94% (n = 7) of cases of lower urinary tract disorders that were incapacitating despite treatment, 15.38% (n = 6) of cases of refractory or recurrent urinary tract infection, 10.25% (n = 4) of cases of failure of medical treatment and 10.25% (n = 4) of cases of iterative hematuria. The mean duration of TURP was 53.68 min (48-57), the mean weight of the resected prostate was 58.7 g (35 and 83 g), blood loss was minimal in 92.30% (n = 36), the mean duration of irrigation-washing was 2. 5 days (1-3 da

关键词： BPH TURP Endo-Urology Prostate

Results of Trans-Urethral Resection of Bladder (TURB) for the Treatment of Non-Infiltrating Bladder Tumors (NMIBT) in Musk in Bouake

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Open Journal of Urology 2024年第2期14卷 39-49页

作者： Kouassi Patrice Avion N’diamoi Akassimadou Venance Alloka Sadia kamara Koffi Dje Urology Department Bouaké University Hospital (CHU) Bouaké Ivory Coast

Background: bladder tumors rank 2nd among urological tumors in sub-Saharan Africa, particularly in Côte d’Ivoire. Objective: to report the results of transurethral resection of the bladder (TURB) for the treatment of non-muscle-infiltrating bladder tumors (NMIBT) in Bouaké. Patients and methods: we conducted a cross-sectional, descriptive study of transurethral resection of the bladder (TURB) for the treatment of non-muscle-infiltrating bladder tumors (NMIBT) between January 2022 and April 2023. All patients and their families were informed in advance and had signed an informed consent form. All patients with a non-muscle-invasive bladder tumor confirmed by an initial TURB were included, and patients with a bladder tumor infiltrating the bladder muscle were excluded. Diagnosis was based on cystoscopy and anatomopathological examination of resection shavings. Parameters studied were: age, sex, risk factors, reason for consultation, clinical signs, cystoscopy findings, stage, grade, Evolution. Results: 17 patients with a mean age of 53.7 years (22-73 years) underwent trans-ureteral bladder resection to treat a non-muscle-infiltrating bladder tumor (NMIBT). Male gender predominated with 88.23% (n = 15), the majority of patients came from the ME region with 47.05% (n = 8), farmers were the most numerous (52.94%;n = 9). The most frequent reason for consultation was macroscopic hematuria with 64.1% (n = 11), risk factors were dominated by urinary bilharziasis with 70.58% (n = 12), physical examination was normal in 47.05% (n = 8). Hemoglobin (HB) levels were between 7.5 and 8.5 g/dl in 52.94% (n = 9). On cystoscopy, the tumor was budding in 76.45% (n = 13), the localization was trigonal in 52.9% (n = 9) and the base of implantation was sessile in 70.52% (n = 12). On ultrasound, the tumor was 3 cm or larger in 70.52% (n = 12). Therapeutically, 82.35% (n = 14) of patients received a blood transfusion. TURB was complete in the majority of cases 88.23% (n = 15). Squamous cell

关键词： Bladder Tumor NMIBT TURB Squamous Cell Carcinoma

Exploring the Pathways of Leprosy Patients from Their Communities to a Diagnosis in the Districts of Mayuge, Yumbe and Kasese-Uganda

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Advances in Infectious Diseases 2024年第2期14卷 346-373页

作者： Rose Kengonzi Stavia Turyahabwe Samuel Orach Lisa Gerwing-Adima Ronald W. Nyote Vincent kamara Kabugho Faith Consolata Mpambara National Tuberculosis and Leprosy Program Ministry of Health Uganda Kampala Uganda Health Department Uganda Catholic Medical Bureau Kampala Uganda German Leprosy and Tuberculosis Relief Association Kampala Uganda National Tuberculosis and Leprosy Program Kampala Uganda

Background: Leprosy is known to cause disability that leads to severe outcomes like stigma, discrimination, mental health problems and participation restriction. Furthermore, in cases of infectious leprosy, longer delays increase the risk for the spread of the disease. Despite being preventable and curable, a significant proportion of new leprosy patients (39%) in 2019 had grade 2 (Described as Visible disability) at the time of diagnosis signifying late presentation. The aim of this study was to describe patient journeys from first symptoms suggestive of leprosy to a diagnosis and individual and community level factors associated with health seeking behavior of leprosy patients. Methods: This was a cross-sectional explorative study implemented in Kasese, Mayuge and Yumbe districts .A structured questionnaire was used to collect quantitative data. Qualitative assessment included patients, family members, health workers, voluntary health teams and the district health team. Descriptive statistics were presented in terms of percentages, frequency tables, pie Charts and graphs for easy interpretation and discussion. Results: The results indicate that 53% of the respondents identified as female. The median age of the respondents being 34 years, with a range of 1 to 76 years (Mean: 44.7, Mode: 65, Standard-Deviation: 19.6, Kurtosis: 0.6). The most common first symptom noticed by respondents was skin lesions (65%) followed by deformities (18%) (P value = 0.05%) occurring mostly in the feet (P-value = 0.48). Majority (52%) of the patients had taken more than 24 months (SD 18.72 OR 2.75) for a diagnosis to be made with a maximum delay of over 60 months. The most common cause of delay in seeking health care was lack of knowledge on leprosy (P value=Conclusions: There was a delay of 2 years in seeking health care for the majority of the patients. Key barriers to early diagnosis were lack of knowledge and infrastructure. Community sensitization and strengthening capacity buildi

关键词： Leprosy Patient Pathway Skin Lesions Disability Discrimination Delayed Diagnosis

Genetic and Agronomic Parameter Estimates of Growth, Yield and Related Traits of Maize (Zea mays L.) under Different Rates of Nitrogen Fertilization

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American Journal of Plant Sciences 2024年第4期15卷 274-291页

作者： Prince Emmanuel Norman Lansana kamara Aloysius Beah Kelvin Sahr Gborie Francess Sia Saquee Sheku Alfred Kanu Fayia Augustine Kassoh Yvonne Sylvia Gloria Ethel Norman Abdul Salaam Kargbo Sierra Leone Agricultural Research Institute (SLARI) Freetown Sierra Leone School of Agriculture Njala University Njala Campus Njala Sierra Leone School of Natural Resources Management Njala University Njala Campus Njala Sierra Leone Department of Agro Biotechnology Institute of Agriculture RUDN University Moscow Russia Faculty of Development Agriculture & Natural Resources Management Eastern Technical University of Sierra Leone Kenema Sierra Leone

This study evaluated the genetic and agronomic parameter estimates of maize under different nitrogen rates. The trial was established at the Njala Agricultural Research Centre experimental site during 2021 and 2022 in a split block design with three maize varieties (IWCD2, 2009EVDT, and DMR-ESR-Yellow) and seven nitrogen (0, 30, 60, 90, 120, 150 and 180 kg∙N∙ha−1) rates. Findings showed that cob diameter and anthesis silking time (ASI) had intermediate heritability, ASI had high genetic advance, ASI and grain yield had high genotypic coefficient of variation (GCV), while traits with high phenotypic coefficient of variation (PCV) were plant height, ASI, grain yield, number of kernel per cob, number of kernel rows, ear length, and ear height. The PCV values were higher than GCV, indicating the influence of the environment in the studied traits. Nitrogen rates and variety significantly (p −1 plots exhibiting the lowest and highest grain yields of 1238 kg∙ha−1 and 2098 kg∙ha−1, respectively. Variety and nitrogen effects on partial factor productivity (PFPN), agronomic efficiency (AEN), net returns (NR), value cost ratio (VCR) and marginal return (MR) indicated that these parameters were significantly affected (p N (41.3 kg grain kg−1∙N) and AEN (29.4 kg grain kg−1∙N) were obtained in the 30 kg∙N∙ha−1 plots, while the highest VCR (2.8) and MR (SLL 1.8 SLL−1 spent on N) were obtained in the 180 kg∙N∙ha−1. The significant influence of variety and nitrogen on traits suggests that increasing yields and maximizing profits require use of appropriate nitrogen fe

关键词： Nitrogen Rates Genetic and Agronomic Estimates Introduced Genotypes Grain Yield Zea mays

中国对非洲投资是债务陷阱吗？ ——基于加纳的研究

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中国对非洲投资是债务陷阱吗？ ——基于加纳的研究

作者： Alhaji Alie kamara 山东财经大学

学位级别：硕士

中国是非洲的主要投资者，约占非洲大陆外国直接投资(FDI)流量的16%。中国在撒哈拉以南非洲的存在是学术和政治辩论的热点。长期以来，中国始终是该区域的可靠合作伙伴。作为区域成员，加纳和中国拥有历史悠久的双边关系，两国的贸易和... 详细信息

中国是非洲的主要投资者，约占非洲大陆外国直接投资(FDI)流量的16%。中国在撒哈拉以南非洲的存在是学术和政治辩论的热点。长期以来，中国始终是该区域的可靠合作伙伴。作为区域成员，加纳和中国拥有历史悠久的双边关系，两国的贸易和投资关系使得彼此受益。但是，作为中国“一带一路”的成员国之一，一些西方国家不断提出质疑，认为中国以投资为陷阱，使得加纳这样的贫穷国家陷入债务危机。　　论文首先展开了文献综述，这包括对流入加纳的FDI的研究文献、中国对加纳投资的背景分析文献。然后阐释了研究方法：定性分析和定量分析。定量分析基于二手资料：IMF、GIPC以及世界银行等的有关文献、期刊和记录资料等。此外，论文也采用了问卷方法，调查了一些政府官员、经济研究专家和一些投资企业。在这些研究的基础上，论文也分析了中国FDI流入加纳面临的挑战和各种条件。研究发现，尽管中国FDI对于加纳经济发展至关重要，但是，也带来了环境和社会问题。　　对中国FDI是否将加纳拖入债务陷阱的探讨，研究证实债务陷阱不可能在加纳发生。加纳的生产、服务、贸易、农业、网络、基础建设等等都受益于来自中国的投资。中国与加纳的关系主要是经济上的，而是否允许中国FDI投资于加纳的公共领域，则完全取决于加纳的政府官员，而不是来自中国的胁迫。　　本文的研究表明，中国在非洲投资并不是西方及其盟国对中国所言的债务陷阱或其他有争议的观点。在此基础上，论文呼吁呼吁进一步加强中国和非洲之间的经济贸易往来。

关键词：中非关系外商直接投资债务陷阱