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Shear Strength Characteristics of Calcium Oxide and Guar Gum Treated Loose Petobo Silty Sand 经氧化钙和瓜尔胶处理的松散佩托博淤泥砂的剪切强度特性
Pub Date : 2024-06-06 DOI: 10.37385/jaets.v5i2.2583
Yohanes Albrecht Montol, Aswin Lim, Paulus Pramono Rahardjo
This article presents the shear strength characteristics of Petobo Silty Sand which are treated with Calcium Oxide and Guar Gum. The purpose of this experimental works is looking for other binding agents to replace the application of cement which is considered not an environmentally friendly material. The shear strength of treated soils was examined using the direct shear test. Guar gum and Calcium Oxide provides additional cohesion to Petobo silty sand. The cohesion and internal friction angle could increase to about 900 kPa and 47.5°, respectively. The treated sample also shows the dilation behavior in dry conditions. However, after 24 hours soaking period, the soil behavior returned to the contraction behavior. This behavior is unfavorable in the case of the treated sample below the groundwater table. Hence, these two binding agents are effective for dry soil conditions. In addition, Scanning Electron Microscope images of treated silty sand were obtained which aims to examine the microscopic behavior of the fibers and matrices that were formed through the hydration process.
本文介绍了用氧化钙和瓜尔胶处理过的 Petobo 淤泥砂的剪切强度特性。这项实验工作的目的是寻找其他粘合剂来替代水泥,因为水泥被认为不是一种环保材料。使用直接剪切试验检测了经处理土壤的剪切强度。瓜尔胶和氧化钙为 Petobo 淤泥砂提供了额外的内聚力。内聚力和内摩擦角分别增加到约 900 千帕和 47.5°。经过处理的样品在干燥条件下也会出现膨胀现象。然而,浸泡 24 小时后,土壤又恢复了收缩状态。这种行为对地下水位以下的处理样本不利。因此,这两种结合剂在干燥的土壤条件下是有效的。此外,还获得了经过处理的淤泥砂的扫描电子显微镜图像,目的是检查水合过程中形成的纤维和基质的微观行为。
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引用次数: 0
Safety Assessment of Tunnel Lining Structure with Underlying Cavities Based on Fuzzy Comprehensive Evaluation in Mudstone Stratum 基于模糊综合评价的泥岩地层带底层空洞隧道衬砌结构安全评估
Pub Date : 2024-06-06 DOI: 10.37385/jaets.v5i2.3690
Yiming Wang, Haoxuan Wang
This paper presents a study on the structural safety assessment of tunnel linings with underlying cavities based on a fuzzy comprehensive evaluation model in mudstone stratum. The weight and membership degree are determined using an improved method: field data analysis and numerical simulation. Field data analysis revealed that the proportion of cavities in the surrounding rocks of class ? and at the vault was the largest. Cavity length between 1m and 3m and cavity depth between 20cm and 40cm occupied the most significant proportion. Additionally, the impact of defect parameter changes on structural safety was investigated through numerical simulation. It is well known that the lining safety factors are greatly impacted by changes in surrounding rock classifications, cavity locations and depths. In contrast, changes in cavity lengths do not significantly affect the lining safety. The developed fuzzy comprehensive evaluation model consists of factor set, comment set, membership degree and weight set. They are determined according to the previous field data analysis and numerical analysis results. The developed evaluation model is validated by means of the numerical simulation based on the evaluation work of the specific engineering case.
本文介绍了基于泥岩地层模糊综合评价模型的带底层空洞隧道衬砌结构安全评估研究。模型的权重和成员度的确定采用了一种改进的方法:现场数据分析和数值模拟。现场数据分析显示,Ⅴ级围岩和拱顶处的空洞比例最大。空洞长度在 1 米至 3 米之间,空洞深度在 20 厘米至 40 厘米之间,所占比例最大。此外,还通过数值模拟研究了缺陷参数变化对结构安全的影响。众所周知,衬砌安全系数受围岩分类、空洞位置和深度变化的影响很大。相比之下,空洞长度的变化对衬砌安全影响不大。所开发的模糊综合评价模型由因子集、注释集、成员度和权重集组成。它们是根据先前的现场数据分析和数值分析结果确定的。根据具体工程案例的评价工作,通过数值模拟对所开发的评价模型进行了验证。
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引用次数: 1
Agro-Food Supply Chain Risk Assessment: A Review Based on Technique and Approach 农业食品供应链风险评估:基于技术和方法的综述
Pub Date : 2024-06-06 DOI: 10.37385/jaets.v5i2.3688
D. Paillin, M. Machfud, H. Hardjomidjojo, Muhammad Romli
Risk assessment in agro-food supply chains is crucial in managing the complexity and uncertainty associated with food product production, distribution, and consumption. This study aims to classify risks and mapping techniques or approaches used in risk assessment of agro-food product supply chains. Mapping technique or approaches to risk assessment of agro-food supply chains was carried out based on the Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) framework, which consists of several stages of identification, screening eligibility, and inclusion, resulting in a total of 72 relevant journal articles. They were selected from 58 different journals with high-impact factors and rankings. The literature review results show that agro-food's supply chain risk classification has much to do with risk assessment: macro-level risk, operational risk outside the company, and internal risk. Furthermore, the most studied agro-food products are general food (44%), horticultural products (28%), meat products (11%), dairy products (10%), fishery products (6%) and bread products (1%). The techniques and approaches most widely used in assessing the risk of the agro-food supply chain are semi-quantitative (49.3%), quantitative (31.5%), mixed (12.3%), and qualitative (6.9%). A better knowledge of the topic being addressed in the research community is sped up by identifying these techniques and approaches since the literature on supply chain risk management for agro-food is voluminous, complicated, and challenging to grasp.
农业食品供应链中的风险评估对于管理与食品生产、分销和消费相关的复杂性和不确定性至关重要。本研究旨在对农业食品供应链风险评估中使用的风险和绘图技术或方法进行分类。绘制农产食品供应链风险评估技术或方法的工作是根据系统综述和元分析首选报告项目(PRISMA)框架进行的,该框架包括识别、筛选资格和纳入等几个阶段,最终共筛选出 72 篇相关期刊论文。这些文章选自 58 种具有高影响因子和排名的期刊。文献综述结果表明,农业食品供应链风险分类与风险评估有很大关系:宏观风险、公司外部运营风险和内部风险。此外,研究最多的农业食品是普通食品(44%)、园艺产品(28%)、肉类产品(11%)、乳制品(10%)、水产品(6%)和面包产品(1%)。在评估农业食品供应链风险时,最广泛使用的技术和方法是半定量(49.3%)、定量(31.5%)、混合(12.3%)和定性(6.9%)。由于有关农业食品供应链风险管理的文献浩如烟海、错综复杂、难以把握,因此,通过确定这些技术和方法,可以加快研究界对所研究课题的了解。
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引用次数: 0
The Fuel System Modification To Strengthen Achievement And The Prospect Of Utilizing Gasoline Ethanol Blended With Water Injection 改造燃料系统以提高成绩以及利用掺水汽油乙醇的前景
Pub Date : 2024-06-06 DOI: 10.37385/jaets.v5i2.3249
W. Purwanto, Tung-Kwan Liu, H. Maksum, Ahmad Arif, M. Y. Setiawan, M. Nasir
This research proposes a fuel system conversion from a carburetor to an electronic fuel injection (EFI), to save fossil fuels using gasoline-ethanol combined with water injection. Beneficial as an offer for Indonesian motorcycle environmental friendliness in terms of exhaust emissions. The goal of this study is to improve engine performance and accommodate technology for the deployment of ethanol gasoline implementations. The experiment was conducted using fuel with a ration octane number (RON) of 92, gasoline-ethanol was executed up to E25 then applied water injection (Wi). The results show that converting a conventional carburetor to EFI and additional water injection increases engine performance, mileage, and reduces exhaust emissions.
这项研究提出了一种从化油器到电子燃油喷射(EFI)的燃油系统转换方案,利用汽油乙醇与水喷射相结合来节约化石燃料。在废气排放方面,这对印尼摩托车的环保性有益。本研究的目标是提高发动机性能,并适应乙醇汽油实施部署的技术。实验使用辛烷值(RON)为 92 的燃料,汽油乙醇含量达到 E25,然后进行水喷射(Wi)。结果表明,将传统化油器转换为电喷和额外的水喷射可提高发动机性能、增加行驶里程并减少尾气排放。
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引用次数: 0
Malaria Disease Prediction Based on Convolutional Neural Networks 基于卷积神经网络的疟疾疾病预测
Pub Date : 2024-06-06 DOI: 10.37385/jaets.v5i2.3947
Dhrgam Al Kafaf, Noor N. Thamir, Samara S. AL-Hadithy
This study delves into the investigation of the efficacy of Convolutional Neural Networks (CNNs) in identifying malaria through the examination of cell images. The dataset employed encompasses a total of 27,558 images, harvested from the renowned Malaria Cell Images Dataset on Kaggle, encompassing cells of diverse nature. The architectonics of the CNN model is meticulously devised, comprising of six blocks and three interconnected blocks, thereby rendering an efficient extraction of features and subsequent classification of the cells. Creative paraphrasing: Various strategies such as dropout, batch normalization, and global average pooling are artfully utilized to refine and fortify the model, ensuring its robustness and adaptability. In order to confront the challenge of diminishing gradient and facilitate the attainment of convergence, the activation function known as Rectified Linear Unit (ReLU) is ingeniously employed. Assessing the efficacy of the model via a perplexity grid produces outcomes. Exhibiting a precision rate of 99.59%, a specificity measure of 99.69%, an Sensitivity of 99.40%, F1 Measurement of 99.44%, and a Precision of 99.48, it showcases its capacity to effectively distinguish betwixt malaria-afflicted cells and unafflicted cells. The focal point of this research highlights the substantial potential of CNNs in facilitating the automated identification of malaria using image analysis. By harnessing their unique architecture and regularization techniques, CNNs have the capability to enhance the results and potentially bring about better outcomes in areas with prevalent cases of malaria.
本研究通过检查细胞图像,深入研究卷积神经网络(CNN)在识别疟疾方面的功效。所采用的数据集包括从 Kaggle 上著名的疟疾细胞图像数据集中获取的共计 27,558 张图像,其中包含各种性质的细胞。CNN 模型的架构经过精心设计,由六个区块和三个相互连接的区块组成,从而实现了高效的特征提取和随后的细胞分类。创造性解析:我们巧妙地利用了各种策略,如丢弃、批量归一化和全局平均池化,来完善和强化模型,确保其稳健性和适应性。为了应对梯度递减的挑战并促进收敛,我们巧妙地采用了被称为整流线性单元(ReLU)的激活函数。通过困惑度网格对模型的有效性进行评估后得出了结果。该模型的精确率为 99.59%,特异性为 99.69%,灵敏度为 99.40%,F1 测量值为 99.44%,精确度为 99.48,显示了其有效区分疟疾感染细胞和未感染细胞的能力。这项研究的重点强调了 CNN 在利用图像分析促进疟疾自动识别方面的巨大潜力。通过利用其独特的架构和正则化技术,CNNs 有能力提高结果,并有可能在疟疾流行地区带来更好的结果。
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引用次数: 0
Analysing The Causes of Management and Production Delays in The Implementation of Construction Project Work 建筑项目工作实施过程中管理和生产延误的原因分析
Pub Date : 2024-06-06 DOI: 10.37385/jaets.v5i2.1994
Putri Lynna A. Luthan, N. Sitanggang, Syahreza Alvan, Wisnu Prayogo
This study aims to analyse the causes of delays in the implementation of construction projects caused by management (owners/consultants) and production (contractors). The research sample consists of 56 respondents who are directly involved in the implementation of construction projects (owners, consultants, contractors, field supervisors, and estimators). The quantitative data analysis technique used was descriptive analysis technique, while the qualitative data obtained by interviewing 5 construction project experts was analysed by qualitative descriptive method. To analyse the causes of delays in project implementation, an analysis technique using the Relative Importance Index (RII) formula was used with a reference value of RII> 0.710. The results showed that 1) the average RII on management factors was 0.895> 0.710. This means that management factors (owner/consultant) can cause delays in the implementation of construction projects; 2) the average RII on production factors is 0.917> 0.710. This means that production factors (contractors) can cause delays in the implementation of construction projects. This means that production factors (contractors) can cause delays in the implementation of construction projects. This research is directly useful for construction service providers and contributes to the development of Project / Construction Management science.
本研究旨在分析管理部门(业主/顾问)和生产部门(承包商)造成建筑项目实施延误的原因。研究样本包括 56 名直接参与建筑项目实施的受访者(业主、顾问、承包商、现场监理和估算人员)。采用的定量数据分析技术为描述性分析技术,而通过采访 5 位建筑项目专家获得的定性数据则采用定性描述法进行分析。为了分析项目实施延误的原因,采用了相对重要性指数(RII)公式分析技术,参考值为 RII> 0.710。结果表明:1)管理因素的平均 RII 为 0.895>0.710。这说明管理因素(业主/顾问)会造成建筑项目实施的延误;2)生产因素的平均 RII 为 0.917>0.710。这说明生产因素(承包商)会造成建筑项目实施的延误。这说明生产要素(承包商)会造成建筑项目实施的延误。这项研究对建筑服务提供商直接有用,并有助于项目/建筑管理科学的发展。
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引用次数: 0
Pest Control System on Agricultural Land using IoT Electronic Controller 使用物联网电子控制器的农田害虫控制系统
Pub Date : 2024-06-06 DOI: 10.37385/jaets.v5i2.4592
Ratnasari Nur Rohmah, Yana Oktafianto, Nurokhim Nurokhim, Heru Supriyono, Agus Supardi
This research aims to assist farmers in controlling plant pests, birds and insect, by applying an appropriate electronic technology. The system operates in an automatic and remote-controlled modes using IoT technology.  We used a solar powered systems that are environmentally friendly with zero carbon emissions, as an energy source for the systems. The test results showed that the bird pest control system worked well according to the automatic and remote-control modes design. We compare those two methods to evaluate the most effective between those two methods. Bird pest control using two actuators, sound and movement, outsmart control using only sound by success ratio 70:50. The insect pest control system worked well with the remote-control mode through Telegram application on farmers’ smartphones.
这项研究旨在通过应用适当的电子技术,帮助农民控制植物害虫、鸟类和昆虫。该系统利用物联网技术以自动和遥控模式运行。 我们使用了零碳排放的环保型太阳能系统作为系统的能源。测试结果表明,鸟类害虫控制系统在自动和遥控模式设计下运行良好。我们对这两种方法进行了比较,以评估这两种方法中最有效的一种。使用声音和动作两种执行器控制鸟类害虫的成功率为 70:50,优于仅使用声音的控制方法。通过农民智能手机上的 Telegram 应用程序进行远程控制的虫害控制系统效果良好。
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引用次数: 0
A Bibliometric Article Regarding Twin Technology In Technology Management For The Year 2019-2025: Industry In Malaysia 关于 2019-2025 年技术管理中的孪生技术的文献计量学文章:马来西亚工业
Pub Date : 2024-06-06 DOI: 10.37385/jaets.v5i2.3244
Mazzlida Mat Deli, Ummu Ajirah Abdul Rauf, Maryam Jamilah Asha'ari, Ainul Huda Jamil, A. A. Purwati, Siti Intan Nurdiana Wong Abdullah, Fauziah Ismail
The purpose of this research is to analyze the application of digital twin technology in the efficient management of new innovative technology. The research is directed to perform a bibliometric analysis of the subject topic. The relevancy of the research can be underlined by the fact that digital twin technologies are a popular concept of Industry 4.0. In addition, this research is advantageous to identify the application of digital twin technology in efficient technology management, especially in Malaysia. As a scope, it would highlight possible use cases of digital twin technology.  The review of existing literature highlighted that digital twin technology has serious use case potential in supply chain operations. Whereas other scholars argue that digital twin technology can bring out major disruptive innovations to improve the internal competencies of major manufacturing firms. The methodology for the research involves the use of secondary data with bibliometric analysis. It has been identified in the findings that there is a rise in research associated with digital twin technology between the timelines from 2019 to 2022. Furthermore, Chinese Academies are most active in propagating research on variables like digital twins.
本研究的目的是分析数字孪生技术在有效管理新创新技术方面的应用。研究旨在对主题进行文献计量分析。数字孪生技术是 "工业 4.0 "的一个流行概念,这一事实强调了本研究的相关性。此外,这项研究还有利于确定数字孪生技术在高效技术管理中的应用,尤其是在马来西亚。作为一个范围,它将突出数字孪生技术可能的使用案例。 对现有文献的回顾突出表明,数字孪生技术在供应链运营中具有巨大的应用潜力。而其他学者则认为,数字孪生技术可以带来重大的颠覆性创新,从而提高大型制造企业的内部竞争力。研究方法包括使用二手数据和文献计量分析。研究结果表明,从 2019 年到 2022 年,与数字孪生技术相关的研究呈上升趋势。此外,中国科学院在传播数字孪生等变量的研究方面最为活跃。
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引用次数: 0
Lung Nodule Detection For CT-Guided Biopsy Images Using Deep Learning 利用深度学习检测 CT 引导下活检图像中的肺结节
Pub Date : 2024-06-06 DOI: 10.37385/jaets.v5i2.3716
B. Prashanthi, S. P. A. Claret
The recent advancements in artificial intelligence enhance the detection and classification of lung nodules via computed tomography scans, addressing the critical need for early diagnosis of lung cancer. The lung cancer when identified at the earlier stages, the chance of survival is higher. The methodology encompasses a modern deep-learning approach applied to a private dataset obtained from the Barnard Institute of Radiology at Madras Medical College, Chennai, which has been granted ethical approval.  The results from applying the proposed Convolutional Neural Network model are promising, with an accuracy of 99.3% in malignancy detection, signifying a notable advancement in the precise diagnosis of lung cancer through non-invasive imaging techniques. Beyond academia, the findings of this study have significant implications for real-world healthcare settings. By providing a reliable and automated solution for lung nodule detection, this research contributes to early diagnosis and personalized treatment strategies for lung cancer patients. The value of the present work lies in its potential to reduce morbidity through the early detection of lung cancer, thus contributing to both clinical practice and the ongoing development of AI applications in healthcare. Our research may serve as a model for further studies in digital health care at Madras Medical College, aiming to improve patient outcomes through technology-driven diagnostics.
人工智能的最新进展提高了通过计算机断层扫描对肺结节的检测和分类能力,满足了早期诊断肺癌的迫切需要。肺癌一旦在早期阶段被发现,存活的几率就会更高。该方法包含一种现代深度学习方法,应用于从钦奈马德拉斯医学院巴纳德放射学研究所获得的私人数据集,该数据集已获得伦理批准。 应用所提出的卷积神经网络模型的结果很有希望,恶性肿瘤检测的准确率达到 99.3%,这标志着通过无创成像技术精确诊断肺癌取得了显著进步。除了学术界,这项研究的结果对现实世界的医疗保健环境也有重大意义。通过为肺结节检测提供可靠的自动化解决方案,这项研究有助于肺癌患者的早期诊断和个性化治疗策略。本研究的价值在于,它有可能通过早期检测肺癌来降低发病率,从而促进临床实践和医疗领域人工智能应用的不断发展。我们的研究可作为马德拉斯医学院进一步开展数字医疗研究的典范,旨在通过技术驱动的诊断改善患者的治疗效果。
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引用次数: 0
Durian Rind-Based Liquid Smoke as a Natural Preservative for Chicken Meatballs: Effect of Pyrolysis Temperature and Liquid Smoke Concentration 榴莲皮烟基液作为鸡肉丸的天然防腐剂:热解温度和烟熏液浓度的影响
Pub Date : 2024-06-06 DOI: 10.37385/jaets.v5i2.2770
Muhammad Faisal, Suraiya Kamaruzzaman, Ressa Fitra Adinda, Dimas Anugerah Ilahi, Taufik Hidayat, H. Desvita
Liquid smoke is produced by the pyrolysis of biomass.  The use of liquid smoke has numerous advantages over traditional smoking methods. The liquid smoke market is well-established and growing, providing an opportunity to commercialize biomass pyrolysis. This study aimed to investigate the utility of durian rind, biomass waste rich in lignin, cellulose, and hemicellulose, as a natural preservative to extend the shelf life of chicken meatballs and to mitigate environmental problems caused by the disposal of untreated durian rind waste. Dried durian rinds with approximately 10% water content were pyrolyzed at temperatures of 300°C (T1 liquid smoke), 340°C (T2 liquid smoke), and 380°C (T3 liquid smoke) using a slow pyrolysis reactor in batch conditions to produce crude liquid smoke, which was then purified by distillation at 190°C. Chicken meatballs were then soaked in liquid smoke solutions with concentrations of 1%, 2%, and 3% for 15 minutes, and the meatballs checked for signs of spoilage every 4 hours. Tests for total volatile base nitrogen (TVB-N), in addition to the total plate count (TPC) and most probable number (MPN) of Escherichia coli bacteria, were performed to evaluate the preservation ability of the liquid smoke. The results indicated that both the pyrolysis temperature and liquid smoke concentration affected the preservation time, with a pyrolysis temperature of T3 and liquid smoke concentration of 3% optimum for chicken meatball preservation. Under these conditions, the meatballs could be stored for 56 hours with TVB-N, TPC, and E. coli MPN values of 21.01 mg N/100 g, 5.37 × 104 CFU/g, and 75 MPN/g, respectively. The findings suggest that liquid smoke derived from durian rinds could be used to preserve chicken meatballs.
液态烟雾由生物质热解产生。 与传统的烟熏方法相比,使用液态烟具有许多优点。液态烟雾市场已经成熟并在不断增长,这为生物质热解的商业化提供了机会。榴莲皮是一种富含木质素、纤维素和半纤维素的生物质废料,本研究旨在调查榴莲皮作为天然防腐剂的效用,以延长鸡肉丸的保质期,并缓解因处理未经处理的榴莲皮废料而造成的环境问题。使用慢速热解反应器在 300°C(T1 液体烟雾)、340°C(T2 液体烟雾)和 380°C(T3 液体烟雾)的温度下分批热解含水量约为 10%的干榴莲皮,产生粗液体烟雾,然后在 190°C 的温度下蒸馏提纯。然后将鸡肉丸在浓度为 1%、2% 和 3% 的液态烟溶液中浸泡 15 分钟,每隔 4 小时检查一次肉丸是否有腐败迹象。除了总板计数(TPC)和大肠杆菌的最可能数量(MPN)外,还进行了总挥发性碱氮(TVB-N)测试,以评估液体烟雾的防腐能力。结果表明,热解温度和烟熏液浓度都会影响保存时间,其中热解温度为 T3 和烟熏液浓度为 3% 对鸡肉丸的保存效果最佳。在这些条件下,肉丸可保存 56 小时,TVB-N、TPC 和大肠杆菌 MPN 值分别为 21.01 mg N/100g、5.37 × 104 CFU/g 和 75 MPN/g。研究结果表明,从榴莲皮中提取的液态烟雾可用于保存鸡肉丸。
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引用次数: 0
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Journal of Applied Engineering and Technological Science (JAETS)
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