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Advancing Heart Disease Prediction: Integrating Transfer and Ensemble Learning 推进心脏病预测:整合迁移和集成学习
Pub Date : 2023-09-20 DOI: 10.61463/ijset.icmlheed-2023.103
Christopher Francis Britto
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引用次数: 0
Numerical solution of non-linear advection-dispersion equation in a finite porous domain 有限多孔区域非线性平流-色散方程的数值解
Pub Date : 2023-09-07 DOI: 10.4314/ijest.v15i3.4
R. Yadav, L. Kumar, Sujata Kushwaha
This study presents a numerical simulation of the one-dimensional concentration-dependent convection-dispersion equation in a finite heterogeneous porous formation. The solution of the convection-diffusion equation with variable coefficients is obtained with the help of MATLAB pdepe solver. The groundwater flow velocity depends on the pollutant concentration, and the dispersion coefficient is proportional to the groundwater flow velocity. The effects of the zero-order production term and the first-order decay are also considered. The aquifer is assumed to be heterogeneous and finite, with sources concentrated in the flow direction. It is assumed that the porous media and the pollutant are chemically non-reactive. Initially porous domain is considered not solute free. The model assumes a uniform continuous input point source and a variable input point source released from the left end of the aquifer domain. The obtained results graphically describe the importance of the dispersion coefficient and other relevant parameters for solute transport in porous media. The developed numerical solution is verified with an analytical solution, and it is found that they are in good agreement.
本文对有限非均质多孔地层中与浓度相关的一维对流色散方程进行了数值模拟。利用MATLAB解算器求解变系数对流扩散方程。地下水流速与污染物浓度有关,弥散系数与地下水流速成正比。同时考虑了零阶产生项和一阶衰减的影响。假定含水层是非均质和有限的,源集中在流动方向上。假定多孔介质和污染物在化学上不发生反应。最初多孔区域被认为不是无溶质的。该模型假设一个均匀连续输入点源和一个从含水层域左端释放的可变输入点源。所得结果生动地描述了分散系数和其他相关参数对溶质在多孔介质中输运的重要性。将所建立的数值解与解析解进行了验证,两者吻合较好。
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引用次数: 0
Quality of drinking water used by communities in selected villages from Iringa rural, Kongwa and Mufindi districts, Tanzania 坦桑尼亚Iringa农村、Kongwa和Mufindi地区选定村庄社区使用的饮用水质量
Pub Date : 2023-09-07 DOI: 10.4314/ijest.v15i3.2
Jackson H. Katonge, Enock E. Makupa
Drinking water quality was assessed in selected villages from Kongwa, Mufindi and Iringa rural districts between March and August 2020. Ten villages from three districts were involved in the study: Kongwa (4 villages), Iringa rural (3 villages), and Mufindi (3 villages). Methods used in data gathering were observation, in-situ, and ex-situ measurement of water parameters. A total of 150 samples were collected from different water sources (a bore hole, a well, a spring, and a river) and analyzed using standard methods. Results show that the minimum and maximum values of dissolved oxygen (DO), biochemical oxygen demand (BOD, pH, total dissolved solids (TDS), turbidity, calcium, magnesium, fluoride, nitrate, and hardness were 3.35-9.62, 0.52-1.93, 4.40-8.28, 13.0-2000 mg/L, 0.47–31.6 NTU, 0.41-1.32 mg/L, 0.25-1.35 mg/L, 0.02-1.02 mg/L, 1.30-167 mg/L, and 0.68-216 mg/L, respectively. TDS (2000 mg/L) and nitrate (167 mg/L) were significantly higher than WHO guideline values in some villages from different sources. Further results indicated that 3 out of 17 sampling sites had Escherichia coli, indicating fecal contamination. Higher levels of physical-chemical parameters and microbial contamination observed are of health concern and call for mitigation measures. The study recommends regular water testing, monitoring its quality, treating source points, and providing education to communities surrounding the water sources.
在2020年3月至8月期间,对Kongwa、Mufindi和Iringa农村地区的选定村庄的饮用水质量进行了评估。来自三个地区的10个村庄参与了研究:Kongwa(4个村庄)、Iringa rural(3个村庄)和Mufindi(3个村庄)。数据采集方法包括观测、原位测量和非原位测量。从不同的水源(钻孔、水井、泉水和河流)收集了150个样本,并使用标准方法进行了分析。结果表明:水体溶解氧(DO)、生化需氧量(BOD)、pH、总溶解固形物(TDS)、浊度、钙、镁、氟、硝酸盐、硬度的最小值和最大值分别为3.35 ~ 9.62、0.52 ~ 1.93、4.40 ~ 8.28、13.0 ~ 2000 mg/L、0.47 ~ 31.6 NTU、0.41 ~ 1.32 mg/L、0.25 ~ 1.35 mg/L、0.02 ~ 1.02 mg/L、1.30 ~ 167 mg/L和0.68 ~ 216 mg/L。一些村庄不同来源的TDS (2000 mg/L)和硝酸盐(167 mg/L)均显著高于世卫组织指导值。进一步的结果表明,17个采样点中有3个有大肠杆菌,表明粪便污染。所观察到的较高的物理化学参数和微生物污染水平令人关注健康问题,需要采取缓解措施。该研究建议定期进行水质检测,监测水质,处理水源,并向水源周围的社区提供教育。
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引用次数: 0
Reaction of undamped systematically driven vibrators via Gupta Transform 无阻尼系统驱动振动器的Gupta变换反应
Pub Date : 2023-09-07 DOI: 10.4314/ijest.v15i3.6
Rahul Gupta, Rohit Gupta, Yuvraj Singh, Inderdeep Singh, D. Verma
This paper deals with the dictation of the reaction of undamped, systematically driven electrical and mechanical vibrators by the Gupta transform (GT) and tenders an alternate style for the dictation of the reaction of undamped, systematically driven electrical and mechanical vibrators. It reveals that the GT is an effectual method for the dictation of undamped, systematically driven electrical and mechanical vibrators and proves the materiality of the GT for the dictation of reaction of undamped, systematically driven electrical and mechanical vibrators.
本文讨论了用Gupta变换(GT)记录无阻尼系统驱动电振子和机械振子的反力,并提出了记录无阻尼系统驱动电振子和机械振子反力的另一种方法。结果表明,GT是测定无阻尼系统驱动电振器和机械振子反力的有效方法,证明了GT对测定无阻尼系统驱动电振器和机械振子反力的重要性。
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引用次数: 0
Experimental investigation of emission parameters of diesel engine fueled with various plastic pyrolysis oils 不同塑料热解油对柴油机排放参数的影响试验研究
Pub Date : 2023-09-07 DOI: 10.4314/ijest.v15i3.1
Maulik A. Modi, Tushar M. Patel
Plastic has various advantages and is becoming more ubiquitous by the year, yet recycling and disposal remain challenges for the world. We conduct tests in this study to evaluate the appropriateness of various Plastic Pyrolysis Oils (PPOs) made from Low Density Polyethylene (LDPE), High Density Polyethylene (HDPE), and Polypropylene (PP) for diesel engine fuel. Determine which type of plastic pyrolysis oil would function best as an alternative fuel in an experimental investigation. The elemental composition of pyrolysis oil generated from LDPE, HDPE, and PP to diesel was assessed, tabulated, and compared in this study. This study examines emission characteristics (Nitrogen Oxide (NOX), Hydro Carbon (HC), and Carbon Monoxide (CO)) for Diesel, LDPE, HDPE and PP in CI engines using different injection pressure, compression ratio, and load in a specific configuration. In the result of experimental work the CO emission range for diesel and LDPE is exceeded only during overload situations or when the engine load is 100%. The average NOX emission is lowest when PP is used in comparison to other fuels, and the highest NOX emission occurs when LDPE is utilised as a fuel. Increased fumigation rates may be to blame for the rising hydrocarbon content of plastic oil. Unburned hydrocarbon levels are lower at lighter loads due to increased oxygen availability. The use of this whole pyrolysis oil results in a significant decrease in Nitrogen Oxide (NOX), Hydro Carbon (HC), and Carbon Monoxide (CO) exhaust emissions. With the help of this current study. one can solve plastic waste disposal problem and also find any unknown fuel (PPOs) that can be used as an alternative fuel for CI engine or not.
塑料有各种各样的优点,而且越来越普遍,但回收和处理仍然是世界面临的挑战。我们在本研究中进行了测试,以评估由低密度聚乙烯(LDPE),高密度聚乙烯(HDPE)和聚丙烯(PP)制成的各种塑料热解油(PPOs)作为柴油发动机燃料的适用性。在实验研究中确定哪种类型的塑料热解油最适合作为替代燃料。本研究对LDPE、HDPE和PP制柴油裂解油的元素组成进行了评估、制表和比较。本研究考察了CI发动机中柴油、LDPE、HDPE和PP在不同喷射压力、压缩比和特定配置下的负载下的排放特性(氮氧化物(NOX)、碳氢化合物(HC)和一氧化碳(CO))。在实验工作的结果中,柴油和LDPE的CO排放范围仅在过载情况下或发动机负载为100%时才会超过。与其他燃料相比,使用PP时平均NOX排放量最低,而使用LDPE作为燃料时NOX排放量最高。增加的熏蒸率可能是塑料油中碳氢化合物含量上升的原因。在负荷较轻的情况下,由于氧气可用性增加,未燃烧的碳氢化合物水平较低。使用这种全热解油可以显著减少氮氧化物(NOX)、碳氢化合物(HC)和一氧化碳(CO)的废气排放。在当前研究的帮助下。可以解决塑料垃圾处理问题,也可以找到任何未知的燃料(PPOs),可以作为CI发动机的替代燃料或不。
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引用次数: 0
Power quality improvement of PV interfaced distribution system 光伏接口配电系统电能质量的改善
Pub Date : 2023-09-07 DOI: 10.4314/ijest.v15i3.3
Deepesh Sharma, Rajni Bala, Surender Singh, Pardeep Sharma, Sahil Punia
In renewable energy, there is solar energy which is on top of the chart when it comes to the generation of electricity as it is abundantly available in India due to the geographical and climate conditions. These power quality problems and degradation of energy can be avoided by using a control mechanism. It is vital to include a reliable control mechanism in the solar energy conversion system that is connected to the system which will reduce the problem in power quality. This work includes the use of adaptive back propagation which provides an improvement in the degree of precision and accuracy over a longer period of time that the technology is capable of achieving as a consequence. With the help of adaptive back propagation which is being used as the foundation for this procedure, we can achieve accurate results which are possible. This work deals with adaptive back propagation-based control for optimal operation by providing the active power to loads and rest of the remaining power will be provided to the grid. It will help in the mitigation of harmonics in the system, balancing the loads, and improving the power factor of the system. To extract the highest amount of energy possible from the solar photovoltaic array, a process that is known as Incremental-conductance (INC) using the maximum power point tracking (MPPT) is used. The outcomes of computer simulations are used to evaluate how well the suggested system functions, which contributes to the assurance that the system is operating in the most suitable way possible.
在可再生能源方面,由于地理和气候条件的原因,太阳能在印度的发电量高居榜首。这些电能质量问题和能量退化可以通过使用控制机制来避免。在与系统相连的太阳能转换系统中加入可靠的控制机制对减少电能质量问题至关重要。这项工作包括使用自适应反向传播,从而在较长时间内提高精确度和准确性,这是该技术能够实现的结果。利用自适应反向传播作为此过程的基础,我们可以获得尽可能准确的结果。本文研究了一种基于自适应反向传播的控制方法,通过向负载提供有功功率,剩余功率向电网提供来实现最优运行。它将有助于缓解系统中的谐波,平衡负载,提高系统的功率因数。为了从太阳能光伏阵列中提取尽可能多的能量,使用了使用最大功率点跟踪(MPPT)的增量电导(INC)过程。计算机模拟的结果用于评估所建议的系统的功能,这有助于确保系统以最合适的方式运行。
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引用次数: 0
Stream water quality modelling for pollution load capacity in Roshi river- rural Nepal 尼泊尔农村罗什河污染负荷能力的水质模拟
Pub Date : 2023-09-07 DOI: 10.4314/ijest.v15i3.5
Saugat Karki, Mahesh Bhattarai, Hari Lal Kharel, Bhesh Kumar Karki
A rural catchment stream, Roshi (Nepal), is experiencing pollution loads from non-point pollution sources: agricultural runoffs and stone quarry sediment loads requiring immediate concern. This study is focused on developing a well-calibrated and validated water quality model to determine the pollution load capacity of Roshi River at peak rainfall periods using software QUAL2kW concerning pH, Temperature, DO, FSS, NO3-, NH4+, TP, BOD, and Turbidity. A pollution-dominant stretch of 1.95km was selected and segmented into three segments. RMSE values showed the model satisfactory in predicting actual in-field scenarios. Scenario analysis showed that in the existing pollution source flow and streamflow, the pollution load capacity is 275 mg/L for BOD, 33 mg/L for NH4+, 1250 mg/L for NO3-, 10 mg/L for TP, and 0 mg/L for DO. The FSS in the Headwater must be limited to 55 mg/L to maintain the stream water quality within standards signifying the immediate need to reduce the upstream stone quarry load. Policymakers are urged to implement stringent regulations on upstream quarries concerning sediment load discharge into the stream. The developed model can be a valuable tool for predicting the stream's response to potential emissions from future development activities during the monsoon period.
一条农村集水河Roshi(尼泊尔)正在遭受来自非点源污染源的污染负荷:农业径流和采石场沉积物负荷需要立即关注。本研究的重点是开发一个经过校准和验证的水质模型,利用QUAL2kW软件确定罗石河在降雨高峰期的污染负荷能力,包括pH、温度、DO、FSS、NO3-、NH4+、总磷、BOD和浊度。选择了一条1.95公里的污染优势路段,并将其划分为三个区段。RMSE值表明该模型能较好地预测现场实际情况。情景分析表明,在现有的污染源流和河流流中,BOD负荷为275 mg/L, NH4+负荷为33 mg/L, NO3-负荷为1250 mg/L, TP负荷为10 mg/L, DO负荷为0 mg/L。源头的水氮含量必须限制在每公升55毫克,以维持溪流的水质符合标准,显示急迫需要减少上游采石场的负荷。我们敦促政策制定者对上游采石场实施严格的规定,禁止向河流排放泥沙。开发的模型可以作为一个有价值的工具,用于预测河流对未来季风期间开发活动的潜在排放的反应。
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引用次数: 0
DELIZIA SELF SERVICE APPLICATION USING UX DESIGN AND ANDROID STUDIO Delizia自助服务应用程序使用ux设计和android工作室
Pub Date : 2023-07-30 DOI: 10.56127/ijst.v2i2.893
Fernandus Felix Heriyanto, Hari Setiabudi Husni
Delizia Self Service is a tart ordering service application using the concept of Self Service Technology (SST). In this application there are 2 kinds of prospective users, in terms of customers to order tarts who can choose directly the tarts they want and even customers can also customize tarts according to their tastes. And in terms of admin which is useful for managing products, from adding products, deleting products and modifying products.  Based on its function, this application provides benefits such as providing alternative means of selling tarts, increasing sales value, increasing interest, user experience, satisfaction, and comfort of buyers when ordering tarts. This journal focuses on developing application recommendations by designing the UI/UX of the Delizia Self Service Application and realizing it using Android Studio, using the System Development Life Cycle (SDLC) method with the prototype model.
Delizia自助服务是一个使用自助服务技术(SST)概念的开始订购服务应用程序。在这个应用程序中,有两种潜在的用户,就点挞的客户而言,他们可以直接选择自己想要的挞,甚至客户也可以根据自己的口味定制挞。在管理方面,它对管理产品很有用,从添加产品,删除产品和修改产品。基于其功能,该应用程序提供了诸如提供销售馅饼的替代方法,增加销售价值,增加兴趣,用户体验,满意度和订购馅饼时买家的舒适度等好处。本期刊主要通过设计Delizia自助服务应用程序的UI/UX并在Android Studio上实现,采用系统开发生命周期(SDLC)方法和原型模型来开发应用程序建议。
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引用次数: 0
USER SATISFACTION ANALYSIS OF GOJEK APPLICATION USING END-USER COMPUTING SATISFACTION (EUCS) 基于终端用户计算满意度(eus)的gojek应用用户满意度分析
Pub Date : 2023-07-30 DOI: 10.56127/ijst.v2i2.875
Aura Wihati Dienislami, Aviarini Indrati
At the first time, Gojek application is the online transportation services, but now it has various services. Online transportation services in the Gojek application are GoRide and GoCar. Analysis of application performance can be done to determine the user satisfaction. The aim of this research is to analyze the Gojek application user of satisfaction, especially GoRide and GoCar online transportation services. This research consists of 3 steps. The steps are making research model and adopting questionnaire, validity and realibility test and data analysis. Evaluation is done using 5 dimensions of End User Computing Satisfaction (EUCS). It consists of content, accuracy, format, easy of use and timeliness. In addition, the demographic factors of the respondents were also added, namely gender, age and occupation. There are 100 respondents in this research. The result of this research are the user satisfaction of Gojek application, especially GoRide and GoCar, can be categorized as very satisfied. The dimensions of EUCS and demographic factors have positive affect to user satisfaction. Gojek application can develop by increasing the accuracy of information and timeliness.
起初,Gojek应用程序是在线交通服务,但现在它有各种服务。Gojek应用程序中的在线交通服务是goide和GoCar。对应用程序性能的分析可以确定用户满意度。本研究的目的是分析Gojek应用用户的满意度,特别是goide和GoCar在线交通服务。本研究分为三个步骤。研究的步骤是建立研究模型,采用问卷调查、效度和信度检验、数据分析。使用最终用户计算满意度(EUCS)的5个维度进行评估。它由内容、准确性、格式、易用性和时效性组成。此外,还增加了受访者的人口因素,即性别、年龄和职业。在这项研究中有100名受访者。本研究的结果是Gojek应用的用户满意度,特别是goide和GoCar,可以归类为非常满意。EUCS维度和人口学因素对用户满意度有正向影响。Gojek应用程序可以通过提高信息的准确性和时效性来发展。
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引用次数: 0
IMPLEMENTATION OF NETWORK WEBSITE TECHNOLOGY IN COMPANY BRANDING PROFILE 网络网站技术在公司品牌塑造中的应用
Pub Date : 2023-07-27 DOI: 10.56127/ijst.v2i2.867
Wisnu Sukma Maulana, Andre Pratama Adiwijaya
A website is a network-based information medium that can be accessed anywhere and anytime using a computer. It is relatively inexpensive compared to conventional information media such as newspapers. We can do many things by using a website, one of which is to inform about a company, also known as a company profile. The research method used is WDLC. In the testing phase, three different web browsers were used. When tested on these three browsers, there were no bugs at all.
网站是一种基于网络的信息媒介,可以随时随地使用计算机访问。与报纸等传统信息媒体相比,它相对便宜。我们可以通过使用网站做很多事情,其中之一是通知公司,也称为公司简介。研究方法为WDLC。在测试阶段,使用了三种不同的web浏览器。在这三种浏览器上进行测试时,没有任何错误。
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引用次数: 0
期刊
International journal of engineering science and technology
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