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A Simulation-Based Comparative Study of Controlled Delay (Codel) with Random early Detection (Red) for Network Performance Evaluation 基于仿真的网络性能评估中可控延迟(Codel)与随机早期检测(Red)的比较研究
Pub Date : 2023-07-17 DOI: 10.52589/bjcnit-nmhj4s4q
Komolafe T.A., Oladimeji O.A., Adiamo O.O., Oyebode O.O., Oyeniyi R.O.A.
The rising need to use the internet for time/delay-sensitive applications with different Quality of Service (QOS) requirements has made network management and control even more challenging. The current congestion avoidance and control mechanisms for Transport Control Protocol (TCP) are insufficient to offer good service in all circumstances. A few decades ago, the TCP successfully regulated Internet congestion control. However, it is already widely acknowledged that TCP has reached its limits and that new congestion control protocols will be required in the near future. This has prompted a significant amount of research on novel congestion control designs that will meet the demands of the future Internet. With widespread public attention and study, the full buffer problem has not gone away, but rather worsened. As a result, there has been a surge in interest in using Active Queue Management (AQM) in Internet routers to minimize queue latency. The effectiveness of a recently developed AQM, Controlled Delay (CoDel) algorithm, designed to work in today’s network setups and can be deployed as a main part of the bufferbloat solution, is evaluated in this research study. CoDel's effectiveness is evaluated by running simulations in ns-3 and comparing its results to that of Random Early Detection (RED), another promising network queue management technique.
对于具有不同服务质量(QOS)要求的对时间/延迟敏感的应用程序使用互联网的需求日益增长,这使得网络管理和控制更具挑战性。目前传输控制协议(TCP)的拥塞避免和控制机制不足以在所有情况下提供良好的服务。几十年前,TCP成功地规范了互联网拥塞控制。然而,人们已经普遍认识到TCP已经达到了它的极限,在不久的将来需要新的拥塞控制协议。这促使人们对新的拥塞控制设计进行大量的研究,以满足未来互联网的需求。随着公众的广泛关注和研究,满缓冲问题不但没有消失,反而恶化了。因此,人们对在Internet路由器中使用活动队列管理(AQM)来最小化队列延迟的兴趣激增。本研究评估了最近开发的AQM,即控制延迟(CoDel)算法的有效性,该算法设计用于当今的网络设置,并且可以作为bufferbloat解决方案的主要部分进行部署。CoDel的有效性通过在ns-3中运行模拟来评估,并将其结果与另一种有前途的网络队列管理技术随机早期检测(RED)的结果进行比较。
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引用次数: 0
Prediction of the Beams Under Bending Load 梁在弯曲荷载作用下的预测
Pub Date : 2022-12-28 DOI: 10.52589/bjcnit-uanjiun2
Helena Kraváriková
Analysis of the beam load must be paid great attention. The external loads determine the resultant force of internal forces in the cross-section. An important task in practice is to determine the properties of the deflection line and the maximum stresses at a crucial point of the beam to assess its functional capability. The magnitude of deflection and stress can be solved both analytically and by numerical simulation. The obtained results allow us to predict critical points of the structure, thus avoiding the accumulation of maximum stresses and deflection, possibly leading to the failure and loss of the structure stability.
梁的受力分析必须引起高度重视。外部载荷决定了截面上内力的合力。在实际应用中,一项重要的任务是确定梁的挠度线特性和关键点处的最大应力,以评估其功能能力。挠度和应力的大小可以用解析法和数值模拟法求解。所得结果使我们能够预测结构的临界点,从而避免了最大应力和挠度的积累,可能导致结构破坏和失去稳定性。
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引用次数: 0
Deposit Money Banks' Computerization and Financial Inclusion in Nigeria 尼日利亚存款银行的计算机化与金融普惠
Pub Date : 2022-11-19 DOI: 10.52589/bjcnit-uwjybtex
Nwafor Chinyere Rose
This study examined deposit money banks’ computerization and financial inclusion in Nigeria covering the period 2013Q1 to 2019Q4. Data for the study were extracted from the Central Bank of Nigeria (CBN). The investigation employed the Ex Post Facto design given that it is targeted at analyzing the impact of some independent variables on a specified dependent variable. The Vector Error Correction Model (VECM) was used to estimate the structural parameters of the model. The major findings of the study were that point on sales contributes positively and significantly to financial inclusion in Nigeria (β = 0.004101, t* = 5.76845), automated teller machines contributes positively and significantly to financial inclusion in Nigeria (β = 0.000405, t* = 2.49681), web Pay contributes negatively and significantly to financial inclusion in Nigeria (β = -0.006088, t* = -5.27666), mobile Pay (MOP) contributes negatively and significantly to financial inclusion in Nigeria (β = -0.001506, t* = -5.79714) and financial deepening contributes negatively and insignificantly to financial inclusion in Nigeria (β = -0.028889, t* = -0.32843). It is therefore the recommendation of the study that the monetary authorities should develop more reliable technological checks to eradicate the possibility of fraud taking over the technological payment channels and the Central Bank of Nigeria should intensify its campaign for the acceptance of web pay by the bankable population since it has been identified as one of the major drivers of financial inclusion.
本研究考察了2013年第一季度至2019年第四季度尼日利亚存款银行的计算机化和金融包容性。该研究的数据来自尼日利亚中央银行(CBN)。该调查采用了事后设计,因为它的目标是分析一些自变量对指定因变量的影响。采用矢量误差修正模型(VECM)对模型的结构参数进行估计。本研究的主要发现是,销售点对尼日利亚的普惠金融有积极和显著的贡献(β = 0.004101, t* = 5.76845),自动柜员机对尼日利亚的普惠金融有积极和显著的贡献(β = 0.000405, t* = 2.49681), web Pay对尼日利亚的普惠金融有消极和显著的贡献(β = -0.006088, t* = -5.27666)。移动支付(MOP)对尼日利亚普惠金融的负向显著贡献(β = -0.001506, t* = -5.79714),金融深化对尼日利亚普惠金融的负向不显著贡献(β = -0.028889, t* = -0.32843)。因此,该研究建议,货币当局应开发更可靠的技术检查,以消除欺诈行为接管技术支付渠道的可能性,尼日利亚中央银行应加强其运动,以接受可银行人口的网络支付,因为它已被确定为金融包容性的主要驱动因素之一。
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引用次数: 0
Existential Risk Prediction Models for Diabetes Mellitus 糖尿病存在风险预测模型
Pub Date : 2022-11-01 DOI: 10.52589/bjcnit-pm3cre7i
Moko A., Victor-Ikoh M.
Diabetes mellitus is a disease of the human body that is caused by high blood sugar levels and inactivity, poor eating habits, being overweight etc. This paper reviewed, and analyzed diabetes mellitus Type 1, Type 2, and Gestational diabetes diverse risk prediction models and algorithms employed. In this study, the methodology adopted is the exploratory descriptive approach, which clearly describes the various deep learning and machine learning risk prediction model used for diabetes mellitus classification and forecasting problems. The Deep Neural Network Model algorithms given in this work have the highest score in terms of accuracy and outperformed machine learning models in terms of performance, there is also the issue of other various algorithms' precision. It is recommended that when conducting a classification and risk prediction survey on the different variants of diabetes mellitus, researchers consider using the algorithms explicitly described while paying close attention to their advantages and disadvantages, as well as their potential outcomes. It is also possible to combine deep learning techniques and machine learning algorithms to create ensemble models, which can improve prediction performance.
糖尿病是一种由高血糖、缺乏运动、不良饮食习惯、超重等引起的人体疾病。本文综述并分析了1型糖尿病、2型糖尿病和妊娠期糖尿病的各种风险预测模型和算法。在本研究中,采用的方法是探索性描述性方法,它清晰地描述了用于糖尿病分类和预测问题的各种深度学习和机器学习风险预测模型。在这项工作中给出的深度神经网络模型算法在准确性方面得分最高,在性能方面优于机器学习模型,其他各种算法的精度也存在问题。建议研究人员在对不同类型糖尿病进行分类和风险预测调查时,考虑使用明确描述的算法,同时密切关注其优缺点和潜在结果。也可以结合深度学习技术和机器学习算法来创建集成模型,这可以提高预测性能。
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引用次数: 0
Design and Implementation of a Web-Based Lecturers’ Evaluation System (A Case Study of Computer Science Department, Isa Mustapha Agwai I Polytechnic, IMAP, Lafia) 基于web的讲师评价系统的设计与实现(以Isa Mustapha Agwai I理工学院计算机科学系为例)
Pub Date : 2022-10-12 DOI: 10.52589/bjcnit-uotndxk5
Abdulkadir D.U., Mukail N.U., B. A.
The study focused on design and implementation of a web-based lecturer evaluation system. To accomplish this, the structured system analysis and design methodology (SSDAM) was adopted. The software development tools used were PhP, CSS5, HTML, and MYSQL. The application has the Admin, Student and Lecturer modules. The admin manages students, courses, evaluation questions and criteria. The student module manages students’ ratings of their lecturers while the lecturer module manages lecturers and enables a lecturer to view his mean rating report at the end of a semester.
研究的重点是基于网络的讲师评价系统的设计与实现。为此,采用了结构化系统分析和设计方法(SSDAM)。使用的软件开发工具是PhP、CSS5、HTML和MYSQL。该应用程序有管理员、学生和讲师模块。行政部门管理学生、课程、评估问题和标准。学生模块管理学生对讲师的评分,讲师模块管理讲师,并使讲师能够在学期结束时查看他的平均评分报告。
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引用次数: 0
Effect of Multimedia Instruction (MI) on Students’ Performance in Data Structures and Algorithms in Public Polytechnics in Nasarawa State 多媒体教学对纳萨拉瓦州公立理工学院学生数据结构和算法成绩的影响
Pub Date : 2022-10-12 DOI: 10.52589/bjcnit-eexoqvpg
Onyema S.C., Onyeka I.F., Mukail N.U.
The study investigated the effect of multimedia instruction on students’ academic performance in Data Structures and Algorithms (DSA) in two public Polytechnics in Nasarawa State. The population of the study comprised one hundred and twenty (120) National Diploma one (NDI) students of Computer Science from Nasarawa State Polytechnic, Lafia (now Isa Mustapha Agwai I Polytechnic, Lafia) and Federal Polytechnic, Nasarawa. The study adopted a quasi-experimental research approach using the non-randomized control group pretest-posttest design. Intact classes were maintained and an experiment of two equivalent groups was designed—one was the experimental group while the other was the control group. The group was determined using a simple random sampling technique. Sixty eight (68) students in Nasarawa State Polytechnic, Lafia constituted the experimental group while fifty two (52) students in Federal Polytechnic Nasarawa constituted the control group. The experimental group was exposed to multimedia instruction (MI) on DSA while the control group was exposed to conventional instruction. The instrument for data collection was a DSA performance test titled ‘Data Structure PerfTest (DPT)’. The DPT contained 20 objective items from the topics treated. The reliability of the instrument was determined using the test-retest approach and a correlation coefficient of .87 was attained. Inferential statistics such as t-test was used to test the null hypothesis at 0.05 alpha level of significance. Data analysis was done using the statistical package for social science (SPSS). The finding showed that the treatment group (MI) performed significantly better than its counterpart in the control group which was exposed to conventional instruction. The study recommended expansive use of multimedia instruction in teaching and learning of Data Structures and Algorithms in tertiary institutions.
本研究调查了多媒体教学对纳萨拉瓦州两所公立理工学院学生数据结构与算法(DSA)学业成绩的影响。该研究的人口包括来自拉菲亚纳萨拉瓦州立理工学院(现为拉菲亚Isa Mustapha Agwai I理工学院)和纳萨拉瓦联邦理工学院的120名国家一级文凭(NDI)计算机科学学生。本研究采用准实验研究方法,采用非随机对照组前测后测设计。保持完整的班级,并设计了两个等效组的实验,一个是实验组,另一个是对照组。使用简单的随机抽样技术确定该组。拉法亚纳萨拉瓦州立理工学院68名学生组成实验组,纳萨拉瓦联邦理工学院52名学生组成对照组。实验组在DSA上进行多媒体教学,对照组进行常规教学。数据收集的工具是名为“数据结构PerfTest (DPT)”的DSA性能测试。DPT从所讨论的主题中包含20个客观项目。采用重测法确定仪器的信度,相关系数为0.87。采用t检验等推理统计方法在0.05 α显著性水平下检验原假设。数据分析使用社会科学统计软件包(SPSS)完成。研究结果表明,治疗组(MI)的表现明显优于接受常规教学的对照组。研究建议大专院校在数据结构和算法的教学中广泛使用多媒体教学。
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引用次数: 0
Blockchain Based Electronic Voting Protocol 基于区块链的电子投票协议
Pub Date : 2022-06-05 DOI: 10.52589/bjcnit-7lst204k
E. K., V. B.
SQL injection attack is now the most common server-side attack in web applications whereby malicious codes are injected into the database through user input fields by unauthorized users and this could lead to data loss or in the worst case, to database hijacking. The utilization of Blockchain technology in e-voting applications is not a new thing. Many systems have been proposed using cryptography and other security techniques. In those systems, minimal involvement of third party is observed, a problem of coercion resistance and transparency maintenance at the same time is observed and most processes have not been implemented to evaluate the systems further. This paper applies the cryptographic signatures to validate the origin and integrity of the votes by preserving the voter’s choices during the election process. Furthermore, authors provide several possible extensions and improvements that can be made as an addition to the scope of this research.
SQL注入攻击现在是web应用程序中最常见的服务器端攻击,未经授权的用户通过用户输入字段将恶意代码注入数据库,这可能导致数据丢失,或者在最坏的情况下导致数据库劫持。区块链技术在电子投票应用中的应用并不是一件新鲜事。许多系统已经提出使用密码学和其他安全技术。在这些系统中,观察到第三方的参与最少,同时观察到抵制强制和保持透明度的问题,并且大多数过程没有实施以进一步评估系统。本文通过保留选民在选举过程中的选择,应用加密签名来验证选票的来源和完整性。此外,作者提供了几个可能的扩展和改进,可以作为本研究范围的补充。
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引用次数: 0
Students’ Attendance Management in Higher Institutions Using Azure Cognitive Service and Opencv Face Detection & Recognition Attendance System 基于Azure认知服务和Opencv人脸检测识别考勤系统的高校学生考勤管理
Pub Date : 2022-02-14 DOI: 10.52589/bjcnit-alqqmeee
Edison K., S. U.
This research aimed at studying the current methods of attendance used at higher institutions of learning in Uganda and the feasibility of using facial biometrics as a new method of capturing attendance. Facial biometrics is distinct from other biometrics because it can be carried out without the consent of the person involved. As a result, the researcher developed a face recognition attendance system using OpenCV and Microsoft Azure CS. Questionnaires, interviews, and observations were used to capture data for the research. The data were analyzed using SPSS to get the requirements and systems functionalities. Object-Oriented Design tools were used to model the architecture of the system. Data Flow Diagram, Use-Case Diagram, Activity Diagram, and Flow Chart were used for processing whereas Entity Relation Diagram was used for data modeling. The system was designed to facilitate attendance management of a large number of attendees with ease. Efficiency and reliability were essential features of the system. Data visualization was provided to help management make informed and timely decisions on management matters that are related to attendance. The system was developed using python Tkinter, OpenCV, and Azure CS as mentioned above. The data (images) used by the system were stored in the cloud for accessibility by multiple users. The system was tested thoroughly using various testing types to uncover and fix errors and to minimize the severity of failures.
本研究旨在研究乌干达高等院校目前使用的出勤方法,以及使用面部生物识别技术作为捕获出勤新方法的可行性。面部生物识别技术不同于其他生物识别技术,因为它可以在没有当事人同意的情况下进行。因此,研究人员利用OpenCV和微软Azure CS开发了一个人脸识别考勤系统。问卷调查、访谈和观察被用来获取研究数据。使用SPSS软件对数据进行分析,得到需求和系统功能。使用面向对象的设计工具对系统的体系结构进行建模。数据流图、用例图、活动图和流程图用于处理,实体关系图用于数据建模。该系统的设计是为了方便大量与会者的出席管理,方便快捷。效率和可靠性是该系统的基本特点。提供数据可视化是为了帮助管理层对与出勤有关的管理事项作出明智和及时的决策。如上所述,系统使用python Tkinter, OpenCV和Azure CS进行开发。系统使用的数据(图像)存储在云中,供多个用户访问。使用各种测试类型对系统进行了彻底的测试,以发现和修复错误,并将故障的严重程度降至最低。
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引用次数: 0
Antenatal Management Information System (Case Study: China-Uganda Friendship Hospital, Naguru) 产前管理信息系统(以纳古鲁中乌友好医院为例)
Pub Date : 2022-02-14 DOI: 10.52589/bjcnit_fveuh8tc
Edison K., Timothy I.
To eradicate fetal deaths and stillbirths, the World Health Organization (WHO) set up antenatal care guidelines to help expectant mothers through this period. In Uganda today, it is estimated that at least 90% of the expectant mothers receive antenatal care, and with such a large number of people receiving this service, data is collected manually with pen, which makes it a long process and cumbersome to search specific records during emergencies and analysis of data for proper decision making. Therefore, there is a need for an antenatal management information system. The software is sectioned into registration, triage and consultation. The records officer handles registration of patients, patient visits, viewing and printing patient statistics. The senior clinical officer handles triaging the patient and capturing their vitals, viewing and printing patient statistics. The head midwife handles the monthly progress examination, and views and prints patient statistics. All these processes happen in real time. This system is designed to overcome the problems identified in the current antenatal management information system. The interfaces for the new system were implemented using JSP, Bootstrap and Javascript. PostgreSQL was also used for implementing the system database while Spring was used to create interactivity with the database. After the implementation, the new system was then tested and validated. When developing the system, the focus was on making the whole process of information management in the antenatal department faster, more convenient and efficient.
为了消除胎儿死亡和死产,世界卫生组织(世卫组织)制定了产前护理指南,帮助孕妇度过这一时期。在今天的乌干达,估计至少有90%的孕妇接受产前护理,而接受这项服务的人数如此之多,数据是用笔手工收集的,这使得在紧急情况下搜索具体记录和分析数据以做出正确决策的过程漫长而繁琐。因此,需要一个产前管理信息系统。该软件分为注册、分类和咨询。记录员处理患者登记、患者就诊、查看和打印患者统计数据。高级临床官员负责对患者进行分类,捕捉他们的生命体征,查看和打印患者统计数据。首席助产士负责每月的进度检查,并查看和打印患者统计数据。所有这些过程都是实时发生的。本系统旨在克服目前产前管理信息系统中存在的问题。新系统的接口使用JSP、Bootstrap和Javascript实现。PostgreSQL也被用来实现系统数据库,而Spring被用来创建与数据库的交互。实施后,对新系统进行了测试和验证。在开发系统时,重点是使产前科室信息管理的全过程更加快捷、方便、高效。
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引用次数: 0
Analysis of the Application of Information and Communication Technology (ICT) on School Record-Keeping, in Secondary Schools in Benin City, Nigeria 尼日利亚贝宁市中学信息通信技术(ICT)在学校档案管理中的应用分析
Pub Date : 2022-02-03 DOI: 10.52589/bjcnit-mwcmjkcy
Imasuen K., Abinuomo P.M.
Record-keeping in every organization including the educational system is a vital tool in school administration. It is indispensable since it plays a role in the day to day running of the school. However, the ICT facilities are not used effectively even though most schools have invested heavily in them. It is in the light of the above that this study sought to examine the role of ICT application on school record-keeping in secondary schools in Benin City, Edo State. Two research questions were raised to guide the study. The study adopted a descriptive research design. The population of the study consisted of all the public and private secondary schools in Benin City. The sample for the study consisted of eight hundred (800) respondents. The research instrument for the study was a structured questionnaire. The data collected were analyzed using mean and standard deviation. The findings that emanate from the study revealed that the level of ICT application in school record keeping in public and private secondary schools in Benin City, Edo State was to a low degree, and the prevalent record-keeping facilities were: attendance register, admission register, scheme of work, school time table, lesson notes, individual pupil’s files, and staff movement book. It, therefore, recommended that Government and other education stakeholders should invest in ICT applications for school management and record keeping.
在包括教育系统在内的每个组织中,记录是学校管理的重要工具。它是必不可少的,因为它在学校的日常运行中发挥着作用。然而,尽管大多数学校对信息通信技术设施进行了大量投资,但这些设施并没有得到有效利用。鉴于上述情况,本研究试图审查信息通信技术应用对江户州贝宁市中学学校记录保存的作用。提出了两个研究问题来指导研究。本研究采用描述性研究设计。研究对象包括贝宁市所有公立和私立中学。该研究的样本包括800名受访者。本研究的研究工具为结构化问卷。收集的数据采用均值和标准差进行分析。研究结果表明,江户州贝宁市公立和私立中学的信息通信技术在学校记录保存方面的应用水平很低,普遍的记录保存设施是:出勤登记簿、入学登记簿、工作计划、学校时间表、课堂笔记、学生个人档案和员工流动簿。因此,委员会建议政府和其他教育持份者投资于资讯及通讯科技应用,以促进学校管理和纪录保存。
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引用次数: 0
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British Journal of Computer, Networking and Information Technology
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