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Analysis of test results using an automatic start-stop system in vehicle driving modes 自动启停系统在车辆行驶模式下的试验结果分析
Pub Date : 2021-09-06 DOI: 10.31580/ojst.v4i2.1791
Yusupov Sarvarbek Sodiqovich, Inoyatkhodjaev Jamshud Shukhratullaevich
In this paper, the energy efficiency of automobiles through the automatic start-stop system as a part of the intelligent transport systems was determined by the research method. In the research method, the vehicle's driving mode was analyzed according to the NEDC (New European Driving Cycle) standard. The M1 category Chevrolet Nexia used the method of measuring fuel consumption by volume in the drive cycle at the auto polygon. In this method, the capabilities of the car's design and electronic control unit were used to determine fuel consumption and vehicle speed. The data were obtained via OBD-II from onboard the vehicle through the Scanmatic diagnostic device. The diagram forms were generated using computer technology. The fuel consumption of the car is 8.0 liters per 100 km in the technical parameters. The car consumed 7.5 liters of fuel while using automatic start-stop technology in the auto polygon. The calculation method showed us the system saved 6.25% of the fuel and emitted 6.25% less exhaust gases to the environment.
本文采用研究方法确定了作为智能交通系统组成部分的汽车通过自动启停系统的能源效率。在研究方法中,根据NEDC(新欧洲驾驶循环)标准对车辆的驾驶模式进行分析。M1车型的雪佛兰Nexia在汽车多边形的行驶循环中使用了按体积测量燃料消耗的方法。在该方法中,利用汽车设计和电子控制单元的能力来确定油耗和车速。数据通过机载的OBD-II通过Scanmatic诊断设备获得。图表形式是使用计算机技术生成的。在技术参数中,该车的油耗为每百公里8.0升。在汽车多边形中使用自动启停技术时,该车消耗了7.5升燃料。计算结果表明,该系统节省了6.25%的燃料,减少了6.25%的废气排放。
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引用次数: 1
Component analysis of matrix pattern on RGB images for image stegano-key in MATLAB 基于MATLAB的RGB图像隐键的矩阵模式分量分析
Pub Date : 2021-09-06 DOI: 10.31580/OJST.V4I2.1704
P. D. Khandait, S. Khandait, K. Ingole, Manjusha Talmale
Steganography is quite possibly the best procedures to shroud the presence of concealed data inside a cowl thing. Pictures are the notable cowl things for Steganography and in this work, picture Steganography is embraced. Implanting secret information based interior pictures calls for concentrated calculation, and thus equipment based Steganography usage increases fundamental interest of Steganography based calculation. There are a few techniques to shroud inside recorded cover-photographs. The spatial area strategies control the duvet-photograph pixel-bit esteems to insert the mystery data. The mystery pieces are composed quickly to the duvet picture pixel bytes. Thusly, the spatial territory procedures are basic and simple to execute. The Least Significant Bit (LSB) based picture steganography is one of the significant systems in spatial area photograph Steganography. In this work, a shiny new strategy for LSB Steganography has been suggested that is an extemporized model of 1 bit LSB technique.
隐写术很可能是掩盖隐藏数据的最好方法。图片是隐写术中值得注意的好东西,在这项工作中,采用了图片隐写术。基于内部图像的秘密信息植入需要集中计算,因此基于设备的隐写技术的使用增加了基于隐写技术计算的根本利益。有一些技术可以掩盖在记录的封面照片中。空间区域策略通过控制被褥的像素位来插入神秘数据。这些神秘的碎片被迅速合成成羽绒被图片像素字节。因此,空间领土程序是基本的,易于执行。基于最低有效位(LSB)的图像隐写是空间区域图像隐写的重要系统之一。在这项工作中,提出了一种新的LSB隐写策略,即1位LSB技术的临时模型。
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引用次数: 0
A measure of graduates’ basics components of entrepreneurial skills using confirmatory factor analysis 利用验证性因素分析衡量毕业生创业技能的基本组成部分
Pub Date : 2021-09-06 DOI: 10.31580/OJST.V4I2.1960
Shola Francis Bakare, Z. T. Jagun, Samson A. Ojo, Rotimi Williams Ojulokunrin, Opeyemi Akinfisoye, Olowoleru Olaitan Adedeji
One of the fundamental roles of Technical and Vocational Education (TVE) is to produce human capital with sound technical knowledge and skills that involve series of entrepreneurial activities. However, there has been out-cry of youths involving in all manner of criminality as a result of unemployment in many developing nations. The unemployment situation in developing nations has become household problem begging for an immediate solution. Every individual has shared in this ugly trend no matter the status or position one may be occupying as long as this remains unresolved. It is on this note, this study considered the entrepreneurial skills that promote job creation and employability for the graduates of Technical and Vocational Education (TVE). The design of the study was quantitative research which made use of questionnaire for data collection. The sample of the study consisted of randomly selected 209 respondents comprising of 13 lecturers and 196company employees. A research question was raised and Statistical Package for Social Science (SPSS)software and Structural Equation Modelling (SEM) through Analysis of Moment Structures (AMOS) were used to analyse the quantitative data. The Confirmatory factor Analysis (CFA) was carried out through SPSS version22 and AMOS 22. Descriptive data was analysed to get the mean and Standard deviation. The results of the study indicated that the basics components of entrepreneurial skills (BCES) that promote job creation and employability for the graduates of TVE met the modification indices criteria.
技术和职业教育(TVE)的基本作用之一是培养具有良好技术知识和技能的人力资本,这些知识和技能涉及一系列创业活动。然而,在许多发展中国家,由于失业,年轻人参与各种犯罪活动的呼声很高。发展中国家的失业问题已成为亟需解决的家庭问题。只要这个问题没有得到解决,每个人都参与了这个丑陋的趋势,无论一个人的地位或地位如何。正是在这一点上,本研究考虑了促进职业技术教育(TVE)毕业生创造就业机会和就业能力的创业技能。本研究设计为定量研究,采用问卷调查法收集数据。该研究的样本由随机选择的209名受访者组成,其中包括13名讲师和196名公司员工。提出了一个研究问题,并使用社会科学统计软件包(SPSS)软件和结构方程建模(SEM)通过分析弯矩结构(AMOS)来分析定量数据。验证性因子分析(CFA)采用SPSS version22和AMOS 22进行。对描述性数据进行分析,得到平均值和标准差。研究结果表明,促进技职毕业生就业创造和就业能力的创业技能基本要素符合修正指标标准。
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引用次数: 0
Heart disease diagnosis based on deep learning network 基于深度学习网络的心脏病诊断
Pub Date : 2021-03-07 DOI: 10.31580/OJST.V4I1.1186
Aqeela Hamad, Ammar D. Jasim
Heart disease is the leading cause of death, the cardiovascular disease (CVD) is the major cause of the death world wide according to world health organization. Over 30% of global death was because CVD. However it is considered as controllable disease, so early and accurate diagnosis of heart disease is essential to administrating early and optimal treatment in order to increase long –term survival. Early detection can lead to reduce disease progression. In this paper, we propose a new deep neural network that can be used as classifier in heart disease prediction system, the data base is splitted into training and testing parts, the training data are prepressed by extracting its features in order to perform data augmentation, then the augmented data are training by the designed new model that can increase the accuracy of heart disease detection. from the experimental results, the proposed model provide significant improvement in the prediction of the disease in terms of accuracy, sensitivity and specificity as compared with other approaches
据世界卫生组织统计,心脏病是人类死亡的主要原因,心血管疾病是世界范围内的主要死亡原因。超过30%的全球死亡是由心血管疾病造成的。然而,它被认为是一种可控制的疾病,因此早期准确诊断心脏病对于早期和最佳治疗至关重要,以提高长期生存率。早期发现可减少疾病进展。本文提出了一种新的深度神经网络作为心脏病预测系统的分类器,将数据库分为训练部分和测试部分,通过提取训练数据的特征对训练数据进行预处理,对增强后的数据进行训练,从而提高心脏病检测的准确率。从实验结果来看,与其他方法相比,该模型在预测疾病的准确性、敏感性和特异性方面都有显著提高
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引用次数: 2
The Analysis of QoS parameters for IoT networks 物联网网络QoS参数分析
Pub Date : 2021-03-07 DOI: 10.31580/OJST.V4I1.1725
Anjum Sheikh, Asha Ambhaikar, Sunil Kumar
A large amount of data is transferred by the IoT devices over the network. The successful transmission of data from the source nodes to the destination nodes depends on the reliability of the network. In the absence of good networks the IoT technology will not be able to work properly as the failure in transfer of data would result in the malfunctioning of the applications. The Quality of Services (QoS) parameters of the network helps in knowing the capability of the networks in transferring data. These parameters would help the service providers to improve the shortcomings in the network and provide better service to its users. End to end delay, packet delivery ratio, energy consumption, jitter, routing over load and throughput are some of the parameters discussed in this paper. The parameters have been calculated by the different types of network and the variation of these parameters with the change in the size of network have been studied.
物联网设备通过网络传输大量数据。数据能否成功地从源节点传输到目的节点,取决于网络的可靠性。在没有良好网络的情况下,物联网技术将无法正常工作,因为数据传输失败将导致应用程序故障。网络的服务质量(QoS)参数有助于了解网络传输数据的能力。这些参数将有助于服务提供商改进网络中的不足,为用户提供更好的服务。本文讨论了端到端时延、分组传送率、能耗、抖动、路由过载和吞吐量等参数。对不同类型的网络进行了参数计算,并研究了这些参数随网络大小的变化。
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引用次数: 0
The rol of licorice for remediation of saline soils 甘草在盐碱地修复中的作用
Pub Date : 2021-03-07 DOI: 10.31580/OJST.V4I1.1641
K. Kushiev, K. M. Ismailova, I. Rakhmonov, A. Kenjaev
Soil salinity is a major threat to the sustainability of agricultural production and rural livelihoods in the Mirzachul area in Uzbekistan. Leaching, a traditional practice to cope with salinity through flushing of soils with fresh water in order to remove excess salts from the topsoil, is no longer feasible due to disrepair and inefficient operation of the drainage networks. As a result, salinized lands are either giving very low yields and income or are abandoned, which is negatively affecting rural livelihoods. As an intermediate solution, the cultivation of licorice (Glycyrrhiza glabra) is proposed as a viable alternative, as it rehabilitates salinized soils and improves their fertility - so that major crops can be again grown profitably in these abandoned or highly saline lands. In addition to its positive impact on the sustainability of agricultural production in irrigated areas, licorice cultivation can also increase farm income thanks to the high economic value and marketability of its roots and the value of its biomass as livestock feed.  
土壤盐碱化是乌兹别克斯坦米尔扎库尔地区农业生产可持续性和农村生计的主要威胁。浸出是一种传统的通过淡水冲洗土壤以去除表土中过量盐分的方法,由于排水网络年久失修和运行效率低下,这种方法已不再可行。因此,盐碱化土地的产量和收入要么很低,要么被遗弃,这对农村生计产生了负面影响。作为一种中间解决方案,甘草(Glycyrrhiza glabra)的种植被认为是一种可行的替代方案,因为它可以恢复盐碱化土壤并提高其肥力-因此可以在这些废弃或高盐土地上再次种植有利可图的主要作物。除了对灌溉区农业生产的可持续性产生积极影响外,甘草种植还可以增加农场收入,因为其根部具有很高的经济价值和适销性,其生物量可作为牲畜饲料。
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引用次数: 1
ONLINE TRANSPORTATION SURVEILLANCE SYSTEM FOR IMPROVING DRIVING BEHAVIOUR 改善驾驶行为的在线交通监控系统
Pub Date : 2020-12-29 DOI: 10.31580/OJST.V3I4.1607
H. Warnars
Traffic is a problem in every nation. Indonesia is one of the most populous countries in Indonesia, certainly has such one of the biggest problems in the world, especially in big cities such as Jakarta. This is mostly contributed by the number of vehicles in Jakarta. Combine with current trends of Online transportation; the problem is getting bigger. Online transportation is on the rise in Indonesia. Sometimes seen as providing more benefits to people of Indonesia, online transportation also has its side-effects. As the number of online transportations rises, so is the level of traffic in big cities such as Jakarta. This traffic is also getting worse due to the bad driving behavior of Indonesian people, especially the online transportation driver. To better relieve traffic, a system to improve the drivers’ behavior can be developed to ensure safety, increasing driving behavior awareness, and hopefully decrease the traffic problem as a whole.
交通在每个国家都是一个问题。印度尼西亚是人口最多的国家之一,当然也有世界上最大的问题之一,尤其是在雅加达这样的大城市。这主要是由于雅加达的车辆数量。结合当前在线交通发展趋势;问题越来越严重。印尼的在线交通正在兴起。在线交通有时被视为给印尼人民带来了更多好处,但它也有副作用。随着在线交通工具数量的增加,雅加达等大城市的交通水平也在提高。由于印尼人的不良驾驶行为,尤其是网络交通司机,这种交通状况也越来越糟糕。为了更好地缓解交通,可以开发一个系统来改善驾驶员的行为,以确保安全,提高驾驶行为意识,并有望从整体上减少交通问题。
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引用次数: 0
HEAT TRANSFER AND BOUNDARY LAYER FLOW THROUGH A THIN FILM OF HYBRID NANOPARTICLES EMBEDDED IN KEROSENE BASE FLUID PAST AN UNSTEADY STRETCHING SHEET 在煤油基流体中嵌入混合纳米颗粒薄膜,通过非定常拉伸片进行传热和边界层流动
Pub Date : 2020-12-29 DOI: 10.31580/ojst.v3i4.1678
Nur Ilyana Kamis, Md Faisal Md Basir, Nurul Aini Jaafar, Sharidan Shafie, Taufiq Khairi Ahmad Khairuddin, Kohilavani Naganthran
The present work explored the heat transfer and boundary layer flow of a hybrid nanofluid or nanoparticles in an unsteady thin film flow over a stretching sheet. The similarity variables with techniques of the similarity transformations are introduced to reduce the governing equations of partial differential equations (PDEs) systems into a set of an ordinary differential equation (ODEs) system accompanying boundary conditions. The carbon nanotubes with single-wall, SWCNT and the multi-wall, MWCNT in kerosene base fluid are considered. The “bvp4c” function in the MATLAB software is used to solve the reduced form of the mathematical model numerically. The graphs and tables have been generated with the variations of the governing parameter. There exists a strong corelation between findings currently and published results. The rise of the nanoparticle for SWCNT and MWCNT volume fraction increases the local skin friction and the rate of heat transfer, but declines when the flow is decelerated.
本文研究了纳米流体或纳米颗粒在非定常薄膜上流动时的传热和边界层流动。将相似变量与相似变换技术相结合,将偏微分方程系统的控制方程简化为一组伴随边界条件的常微分方程系统。研究了煤油基流体中单壁单壁碳纳米管和多壁多壁多壁碳纳米管。利用MATLAB软件中的“bvp4c”函数对数学模型的简化形式进行数值求解。根据控制参数的变化,生成了图形和表格。目前的研究结果与已发表的结果之间存在很强的相关性。纳米颗粒体积分数的增加增加了局部表面摩擦和换热速率,但随着流动速度的减慢而下降。
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引用次数: 1
RELATIVE COPRIME PROBABILITY FOR CYCLIC SUBGROUPS OF SOME DIHEDRAL GROUPS 某些二面体群的循环子群的相对素概率
Pub Date : 2020-12-29 DOI: 10.31580/ojst.v3i4.1679
Nurfarah Zulkifli, Nor Muhainiah Mohd Ali
A dihedral group is a group of symmetries of a regular -sided polygon, in other words, a structured operation that will make n-gon to go back to itself through a solid motion. Many researchers have studied various fields of group theory using dihedral groups and one of them is the study of the coprime probability of a group and it is defined as the probability of a random pair of elements in a group G such that the greatest common divisor of the order of x and y, where x and y are in G, is equal to one. The coprime probability of G is then extended to the relative coprime  probability G and it is defined as the probability that two randomly selected elements h  from H and g from G where H is a subgroup of a group G such that the greatest common divisor of the order of h and order of g, is equal to one.  In this research, the concentration is on the generalization of the relative coprime probability for cyclic subgroups of some dihedral groups.
二面体群是一组正边多边形的对称,换句话说,是一种结构化的操作,它将使n-gon通过固体运动回到自身。许多研究人员利用二面体群研究了群论的各个领域,其中之一是对群的素概率的研究,它被定义为群G中随机一对元素使x和y的最大公约数等于1的概率,其中x和y在G中。然后将G的同素数概率推广到相对同素数概率G,并将其定义为两个随机选择的元素h来自h, G来自G,其中h是群G的子群,使得h阶和G阶的最大公约数等于1的概率。本文主要研究了某些二面体群的循环子群的相对素概率的推广。
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引用次数: 1
NUMERICAL SOLUTIONS FOR THE THIN FILM HYBRID NANOFLUID FLOW AND HEAT TRANSFER OVER AN UNSTEADY STRETCHING SHEET 非定常拉伸片上薄膜混合纳米流体流动和传热的数值解
Pub Date : 2020-12-29 DOI: 10.31580/ojst.v3i4.1674
Lee Shin Leong, Md Faisal Md Basir, Nurul Aini Jaafar, Sarkhosh Seddighi Chaharborj, Taufiq Khairi Ahmad Khairuddin, Kohilavani Naganthran
This paper explores the mathematical model of thin-film flow and heat transfer utilizing hybrid nanofluid along with the two-dimensional time dependent stretching sheet. The influence of several parameters towards the model are discussed and solved by the method of collocation, namely bvp4c solver that can find in MATLAB software. In this paper, we focused on the effect of parameters are unsteadiness parameter λ, thermocapillarity number M, constant mass transfer parameter S, and concentration of    towards the model.  The numerical results have been obtained and shown in table and graph form. The effect of thermocapillarity number M and concentration of  are explored and graphically portrayed through the velocity, temperature and concentration profile.
本文探讨了利用混合纳米流体和二维时间相关拉伸片的薄膜流动和传热的数学模型。讨论了几个参数对模型的影响,并用MATLAB软件中的bvp4c求解器进行了配点法求解。本文重点研究了非定常参数λ、热毛细数M、恒定传质参数S和浓度对模型的影响。得到了数值计算结果,并以表格和图表的形式给出。探讨了热毛细数M和浓度的影响,并通过速度、温度和浓度曲线进行了图形化描述。
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引用次数: 1
期刊
Open Access Journal of Science and Technology
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