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Data mining based investigation of the impact of imbalanced dataset over fractured zone detection 基于数据挖掘的数据不平衡对裂缝带检测的影响研究
IF 0.5 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2021-06-11 DOI: 10.14419/ijet.v10i2.31604
H. Azizi, Hassanzadeh Reza
Several studies have been conducted in recent years to discriminate between fractured (FZs) and non-fractured zones (NFZs) in oil wells. These studies have applied data mining techniques to petrophysical logs (PLs) with generally valuable results; however, identifying fractured and non-fractured zones is difficult because imbalanced data is not treated as balanced data during analysis. We studied the importance of using balanced data to detect fractured zones using PLs. We used Random-Forest and Support Vector Machine classifiers on eight oil wells drilled into a fractured carbonite reservoir to study PLs with imbalanced and balanced datasets, then validated our results with image logs. A significant difference between accuracy and precision indicates imbalanced data with fractured zones categorized as the minor class. The results indicated that the accuracy of imbalanced and balanced datasets is similar, but precision is significantly improved by balancing, regardless of how low or high the calculated indices might be.  
近年来进行了一些研究,以区分油井中的裂缝区(FZs)和非裂缝区(NFZs)。这些研究将数据挖掘技术应用于岩石物理测井(PLs),并获得了普遍有价值的结果;然而,由于在分析过程中不将不平衡数据视为平衡数据,因此很难识别裂缝区和非裂缝区。我们研究了使用平衡数据来检测裂缝带的重要性。我们使用随机森林和支持向量机分类器对裂缝性碳酸盐岩储层的8口油井进行了不平衡和平衡数据集的PLs研究,然后用图像日志验证了我们的结果。准确度和精度之间的显著差异表明数据不平衡,裂缝带被归类为次要类。结果表明,平衡和不平衡数据集的精度相似,但无论计算指标的高低,平衡都能显著提高精度。
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引用次数: 0
Parametric cost analysis and quantitative risk assessment for developing strategies to counter risks in the design and production of medical aircraft in the Russian federation 参数成本分析和定量风险评估,以制定战略,应对俄罗斯联邦医疗飞机设计和生产中的风险
IF 0.5 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2021-05-24 DOI: 10.14419/ijet.v10i2.31523
Yuvaraj George
The objective is to identify potential risks in the aircraft development and to quantify the risks in the process, ultimately to find mitigating strategies. Monte-Carlo simulation for quantitative risk assessment and RAND DAPCA IV to calculate the cost are employed. These results are comprehended and collectively assessed with few assumptions. The assumptions are in due consideration to the local conditions, and thus they reflect in the approximations. These assumptions indicate the impact of the industrial and academic environment of the Russian Federation on the developmental cycle of the aircraft. The estimated financial risk for the development of an air medical ambulance for the Russian Federation is 29%, and the cost for unit production of the medical aircraft is nearly 19 million USD. The suggested strategies can reduce the financial risk to 22% and the cost for unit production of the medical aircraft to nearly 13 million USD.
目标是识别飞机开发中的潜在风险,并量化过程中的风险,最终找到减轻风险的策略。采用蒙特卡罗模拟法进行定量风险评估,采用RAND DAPCA IV计算成本。这些结果在很少的假设下被理解和集体评估。这些假设充分考虑了当地的条件,因此它们反映在近似值中。这些假设表明俄罗斯联邦的工业和学术环境对飞机发展周期的影响。据估计,俄罗斯联邦开发空中医疗救护车的财务风险为29%,医疗飞机的单位生产成本接近1 900万美元。建议的策略可以将医疗飞机的财务风险降低到22%,单位生产成本降低到近1300万美元。
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引用次数: 0
BnVec: Towards the Development of Word Embedding for Bangla Language Processing 面向孟加拉语处理的词嵌入研究
IF 0.5 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2021-05-24 DOI: 10.14419/ijet.v10i2.31538
M. Kowsher, M. J. Uddin, A. Tahabilder, Nusrat Jahan Prottasha, Mahid Ahmed, K. M. R. Alam, Tamanna Sultana
Progression in machine learning and statistical inference are facilitating the advancement of domains like computer vision, natural language processing (NLP), automation & robotics, and so on. Among the different persuasive improvements in NLP, word embedding is one of the most used and revolutionary techniques. In this paper, we manifest an open-source library for Bangla word extraction systems named BnVec which expects to furnish the Bangla NLP research community by the utilization of some incredible word embedding techniques. The BnVec is splitted up into two parts, the first one is the Bangla suitable defined class to embed words with access to the six most popular word embedding schemes (CountVectorizer, TF-IDF, Hash Vectorizer, Word2vec, fastText, and Glove). The other one is based on the pre-trained distributed word embedding system of Word2vec, fastText, and GloVe. The pre-trained models have been built by collecting content from the newspaper, social media, and Bangla wiki articles. The total number of tokens used to build the models exceeds 395,289,960. The paper additionally depicts the performance of these models by various hyper-parameter tuning and then analyzes the results.
机器学习和统计推理的进步促进了计算机视觉、自然语言处理(NLP)、自动化和机器人等领域的进步。在各种说服性的NLP改进中,词嵌入是最常用和最具革命性的技术之一。在本文中,我们展示了一个名为BnVec的孟加拉语词提取系统的开源库,希望通过利用一些令人难以置信的词嵌入技术为孟加拉语NLP研究社区提供帮助。BnVec分为两部分,第一部分是孟加拉语合适的定义类,用于嵌入单词,可以访问六种最流行的单词嵌入方案(CountVectorizer、TF-IDF、Hash Vectorizer、Word2vec、fastText和Glove)。另一种是基于Word2vec、fastText和GloVe的预训练分布式词嵌入系统。通过从报纸、社交媒体和孟加拉维基文章中收集内容,建立了预训练模型。用于构建模型的令牌总数超过395,289,960。此外,本文还描述了这些模型通过各种超参数调整后的性能,并对结果进行了分析。
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引用次数: 2
Compression of medical images by quaternionic wavelet transform 四元数小波变换对医学图像的压缩
IF 0.5 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2021-05-22 DOI: 10.14419/ijet.v10i2.31524
Bertrand Ledoux Ebassa Eloundou, Aimé Joseph Oyobe Okassa, Hervé Ndongo Abena, P. Ele
Technological developments for several years have resulted in the handling (storing, exchanging or processing) of increasingly important data in various fields and particularly in medical field. In this works we present a new image compression / decompression algorithm based on the quaternion wavelet transform (QWT). This algorithm is simple, fast and efficient. It has been applied to medical images. The results obtained after decompression are appreciated through the compression parameter values of CR, PSNR, and MSE and by visual observation. By the values of these parameters, the results of the algorithm are considered encouraging.  
几年来的技术发展使处理(储存、交换或处理)各个领域特别是医疗领域日益重要的数据成为可能。本文提出了一种基于四元数小波变换(QWT)的图像压缩解压缩算法。该算法简单、快速、高效。它已被应用于医学图像。通过CR、PSNR、MSE的压缩参数值和目视观察,对解压后得到的结果进行评价。从这些参数的取值来看,算法的结果是令人鼓舞的。
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引用次数: 0
Importance of spindle speed in ring frame 环框机主轴转速的重要性
IF 0.5 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2021-04-14 DOI: 10.32474/LTTFD.2021.03.000173
Redwanul Islam, A. Chakrabortty, Joyjit Ghosh, T. Iqbal, Tanvir Hossen
In textile industries, spinning sector plays a vital role because this sector produces the main raw material for the textile industries which is known as yarn. So for getting good qualities garments, it is needed to ensure the good qualities yarn. There are many things which are re-sponsible for producing good qualities yarn. Among these spindle speed is an important thing. One must have to change the spindle speed, when he changes the count. As every count has a particular spindle speed in which the production shows maximum production efficiency. Here we used five most commonly used yarn counts in the maximum factories. The counts are 15 Ne, 20 Ne, 25 Ne, 30 Ne and 40 Ne. We analyzed these counts with different speed and found that every count showed maximum efficiency at a particular spindle speed. The out-come of this paper is applicable in all types of ring frame machine , especially for producing single carded and combed yarn.  
在纺织工业中,纺纱部门起着至关重要的作用,因为该部门生产纺织工业的主要原料,即纱线。因此,要得到高质量的服装,就必须保证纱线的质量。有很多因素决定了纱线的质量。其中主轴转速是一个重要的因素。当改变计数时,必须改变锭子速度。由于每个计数都有一个特定的主轴速度,在这个速度下生产显示出最大的生产效率。在这里,我们使用了大多数工厂中最常用的五种纱线支数。计数为15ne, 20ne, 25ne, 30ne和40ne。我们用不同的转速分析了这些计数,发现每个计数在特定的主轴转速下都显示出最大的效率。本文的研究结果适用于各种型号的环框机,尤其适用于生产单根梳梳纱。
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引用次数: 0
Application of last planner system with BIM in construction plan management BIM在施工计划管理中的应用
IF 0.5 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2021-04-14 DOI: 10.14419/ijet.v10i1.31492
Wenming Liu, Hongdong Xie, Guoping Peng, Shiping Wang
The project team maintains workflow continuity as much as possible to deliver products on time. Nevertheless, poor construction management makes the workflow unstable during the construction process, which leads to the delayed delivery of the building. As different methods to improve production efficiency, Lean Construction and Building Information Modelling (BIM) have a positive impact on the industry. Although many researches have shown the unique advantages of the Last Planner System (LPS) and BIM Technology, the advantages of their integration have not been fully exploited. This paper explores the application of the LPS and BIM in the construction phase through a project that transforms from traditional construction process planning to the use of the LPS. The project results show the impact of the LPS and BIM as lean methods on the project, which can improve the workflow of the construction project by improving efficiency and coordination.  
项目团队尽可能保持工作流程的连续性,以按时交付产品。然而,施工管理不善导致施工过程中工作流程不稳定,导致建筑延迟交付。作为提高生产效率的不同方法,精益建筑和建筑信息模型(BIM)对行业产生了积极的影响。虽然许多研究已经显示出最后规划师系统(Last Planner System, LPS)和BIM技术的独特优势,但它们融合的优势并没有得到充分发挥。本文通过一个项目,从传统的施工工艺规划转变为使用LPS,探索LPS和BIM在施工阶段的应用。项目结果显示了LPS和BIM作为精益方法对项目的影响,可以通过提高效率和协调性来改善建设项目的工作流程。
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引用次数: 0
Health tracker: data acquisition and analysis for monitoring health trends and assessing disease risk 健康追踪器:数据采集和分析,用于监测健康趋势和评估疾病风险
IF 0.5 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2021-02-27 DOI: 10.14419/IJET.V10I1.31370
Du’a Alzaleq, Suboh Alkhushayni, Austin FitzGerald
This paper describes HealthTracker, a mobile health application to record, store, display, and analyze personal health data. This application allows an individual to log several types of data encompassing their personal health. HealthTracker serves as a model for both a recording and a recommending system. Its goal is to serve as a bridge for future personal health systems to build from. A person’s health information is displayed in an easy-to-understand manner but is also practical for medical professionals. Users should find the system useful and effective no matter if they use it simply or extensively. Currently, the system serves as a prototype for determining the practical applications for smart health systems running on mobile platforms.  
本文介绍了一款用于记录、存储、显示和分析个人健康数据的移动健康应用程序HealthTracker。该应用程序允许个人记录几种类型的数据,包括他们的个人健康状况。HealthTracker作为记录和推荐系统的模型。其目标是作为未来建立个人卫生系统的桥梁。一个人的健康信息以一种易于理解的方式显示,而且对医疗专业人员也很实用。无论是简单使用还是广泛使用,用户都应该发现系统是有用和有效的。目前,该系统可作为确定在移动平台上运行的智能卫生系统实际应用的原型。
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引用次数: 2
Modeling temperature profile in mass concrete at early ages of cement hydration 水泥水化初期大体积混凝土温度分布模型
IF 0.5 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2021-02-27 DOI: 10.14419/ijet.v10i1.30533
Ugwuanyi Donald Chidiebere, Okafor Fidelis Onyebuchi
Thermally induced cracks due to temperature gradient in mass concrete have adverse effects on its durability and service life. Heat released during the hydration of Portland cement in early age mass concrete can be quite excessive depending on the ambient temperature, cement content of the concrete mix and the size. Finite difference model using Crank Nicholson implicit method was developed based on the two dimensional unsteady state heat conduction. Optimized MATLAB based software was developed for simulation and data visualization. A mass concrete block cast with standard mix ratio and water cement ratio was used to verify the efficacy of the model. Type-K thermocouple and digital thermometer were used to monitor the temperature at time intervals. The temperature profile showed a hotter core and cooler surface except for the initial placement temperature, which exhibited a uniform temperature for all thermocouple locations. Peak temperature values were recorded within the first day of concrete placement. The model successfully predicted the temperature profile of the mass concrete at early ages of cement hydration. With the knowledge of the ambient temperature and the configuration of the mass concrete, the model can reliably predict the temperature profile from which potential for thermal cracks occurrence can be determined to enable suitable proactive preventive and control measures.  
大体积混凝土由于温度梯度而产生的热致裂缝对其耐久性和使用寿命有不利影响。早期大体积混凝土中硅酸盐水泥水化释放的热量可能相当大,这取决于环境温度、混凝土配合比中的水泥含量和尺寸。基于二维非稳态热传导问题,建立了基于曲克尼科尔森隐式方法的有限差分模型。开发了基于MATLAB优化的仿真和数据可视化软件。以标准配合比和水灰比的大体积混凝土砌块浇筑试验验证了模型的有效性。采用k型热电偶和数字温度计每隔一段时间监测温度。温度分布显示,除了初始放置温度外,芯层温度较高,表面温度较低,在所有热电偶位置都表现出均匀的温度。峰值温度记录在混凝土浇筑的第一天。该模型成功地预测了水泥水化初期大体积混凝土的温度分布。通过对环境温度和大体积混凝土结构的了解,该模型可以可靠地预测温度分布,从而确定热裂缝发生的可能性,从而采取适当的主动预防和控制措施。
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引用次数: 0
Design and development of a secure certificateless proxy signature based (SE-CLPS) encryption scheme for cloud storage 设计和开发了一种安全的基于无证书代理签名的云存储加密方案
IF 0.5 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2021-02-19 DOI: 10.14419/ijet.v10i1.21480
Ms. K. Sudharani, Dr. N. K. Sakthivel
Certificateless Public Key Cryptography (CL-PKC) scheme is a new standard that combines Identity (ID)-based cryptography and tradi- tional PKC. It yields better security than the ID-based cryptography scheme without requiring digital certificates. In the CL-PKC scheme, as the Key Generation Center (KGC) generates a public key using a partial secret key, the need for authenticating the public key by a trusted third party is avoided. Due to the lack of authentication, the public key associated with the private key of a user may be replaced by anyone. Therefore, the ciphertext cannot be decrypted accurately. To mitigate this issue, an Enhanced Certificateless Proxy Signature (E-CLPS) is proposed to offer high security guarantee and requires minimum computational cost. In this work, the Hackman tool is used for detecting the dictionary attacks in the cloud. From the experimental analysis, it is observed that the proposed E-CLPS scheme yields better Attack Detection Rate, True Positive Rate, True Negative Rate and Minimum False Positives and False Negatives than the existing schemes.
无证书公钥加密(CL-PKC)方案是将基于身份的加密技术与传统的PKC技术相结合的一种新标准。它比基于id的加密方案具有更好的安全性,而不需要数字证书。在CL-PKC方案中,由于密钥生成中心(Key Generation Center, KGC)使用部分秘密密钥生成公钥,因此避免了可信第三方对公钥进行身份验证的需要。由于缺乏身份验证,与用户私钥关联的公钥可能被任何人替换。因此,密文无法准确解密。为了解决这一问题,提出了一种增强型无证书代理签名(E-CLPS),它提供了高安全性保证,并且需要最小的计算成本。在这项工作中,Hackman工具用于检测云中的字典攻击。实验分析表明,与现有方案相比,本文提出的E-CLPS方案具有更高的攻击检测率、真阳性率、真阴性率和最小假阳性和假阴性。
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引用次数: 0
An Automated Approach of Detection of Memory Leaks for Remote Server Controllers 一种自动检测远程服务器控制器内存泄漏的方法
IF 0.5 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2020-12-30 DOI: 10.24003/emitter.v8i2.550
Bhavana D, Veena M B, Santosh Kumar Sahu
Memory leaks are a major concern to the long running applications like servers which make the working set to grow with the program. This eventually leads to system crashing. This paper discusses a staged approach to detect leaks in firmware of remote server controller. Remote server controller monitors the server remotely with many processes running in the background. Any memory leak in the long running applications pose a threat to the performance of the system. The approach adopted here filters the processes running in the system with leaks based on time threshold in the first stage. These processes with leaks are passed to the next stage where precise memory leak detection is done using the open source dynamic instrumentation tool Valgrind. The system leverages an automated leak detection approach that invokes the leak detection process on encountering any severity in the system and generates a consolidated leak report. The proposed approach has less impact on the performance of the system and is faster compared to many available systems as there is no need to modify or re-compile the program. In addition, the automated approach offers an effective technique for detecting possible leakages in early software development phases.
对于长时间运行的应用程序(如服务器)来说,内存泄漏是一个主要问题,它会使工作集随着程序的增长而增长。这最终会导致系统崩溃。本文讨论了一种分阶段检测远程服务器控制器固件泄漏的方法。远程服务器控制器远程监控后台运行多个进程的服务器。长时间运行的应用程序中的任何内存泄漏都会对系统性能造成威胁。这里采用的方法基于第一阶段的时间阈值过滤系统中运行的进程。这些有泄漏的进程被传递到下一个阶段,在这个阶段使用开源动态检测工具Valgrind进行精确的内存泄漏检测。系统利用自动泄漏检测方法,在遇到系统中的任何严重情况时调用泄漏检测过程,并生成合并的泄漏报告。所建议的方法对系统性能的影响较小,并且与许多可用的系统相比速度更快,因为不需要修改或重新编译程序。此外,自动化方法提供了一种在早期软件开发阶段检测可能的泄漏的有效技术。
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引用次数: 1
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EMITTER-International Journal of Engineering Technology
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