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Estimation of the Moisture Content, Volatile Matter, Ash Content, Fixed Carbon and Calorific Values of Saw Dust Briquettes 锯末型煤的水分、挥发物、灰分、固定碳和热值的测定
Pub Date : 2022-01-28 DOI: 10.51354/mjen.940760
Francis Inegbedion
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引用次数: 2
Launching to an Orbit with a Chemical Propellant Staged Rocket Systems 用化学推进剂分级火箭系统发射到轨道
Pub Date : 2022-01-24 DOI: 10.51354/mjen.1000248
Erk Inger
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引用次数: 0
On Matrix Sequence of modified Tribonacci-Lucas Numbers 修正tribonaci - lucas数的矩阵序列
Pub Date : 2021-12-17 DOI: 10.51354/mjen.894514
Y. Soykan, E. Taşdemir, Vedat Irge
In this paper, we define modified Tribonacci-Lucas matrix sequence and investigate its properties.
本文定义了修正tribonaci - lucas矩阵序列,并研究了它的性质。
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引用次数: 0
Parking Lot Occupancy Prediction Using Long Short-Term Memory and Statistical Methods 基于长短期记忆和统计方法的停车场占用率预测
Pub Date : 2021-11-17 DOI: 10.51354/mjen.986631
Yusuf Can Anar, E. Avşar, Abdurrahman Özgür Polat
In crowded city centers, drivers looking for available parking space generate extra traffic and in addition, the resulting excessive exhaust gases cause air pollution. Therefore, directing the drivers to a parking spot in an intelligent way is an important task for smart city applications. This task requires the prediction of occupancy states of parking lots which involves appropriate processing of the historical parking data. In this work, Long-Short Term Memory (LSTM) and Autoregressive Integrated Moving Average (ARIMA) methods were applied to parking data collected from curbside parking spots of Adana, Turkey for predicting the parking lot occupancy rates of future values. The experiments were performed for making predictions with different prediction horizons that are 1 minute, 5 minutes, and 15 minutes. The performances of the methods were compared by calculating root mean squared error (RMSE) and mean absolute error (MAE) values. The experiments were performed on data from five different days. According to the results, when the prediction horizon is set to 1 minute, LSTM achieved RMSE and MAE values of 0.98 and 0.72, respectively. For the same prediction horizon, ARIMA achieved RMSE and MAE values of 0.62 and 0.35, respectively. On the other hand, LSTM achieved smaller error values for larger prediction horizons. In conclusion, it was shown that LSTM is more suitable for larger prediction horizons, however, ARIMA is better at predicting near-future values.
在拥挤的城市中心,司机寻找可用的停车位造成额外的交通,此外,由此产生的过量废气造成空气污染。因此,如何以智能的方式引导司机到停车位是智慧城市应用的重要任务。该任务要求预测停车场的占用状态,这涉及到对历史停车数据的适当处理。本研究采用长短期记忆(LSTM)和自回归综合移动平均(ARIMA)方法对土耳其Adana市路边停车场的停车数据进行分析,预测未来车位入住率。实验采用1分钟、5分钟和15分钟的不同预测期限进行预测。通过计算均方根误差(RMSE)和平均绝对误差(MAE),比较了各方法的性能。实验是根据5天的数据进行的。结果表明,当预测时段设置为1分钟时,LSTM的RMSE和MAE值分别为0.98和0.72。对于相同的预测水平,ARIMA的RMSE和MAE值分别为0.62和0.35。另一方面,LSTM在更大的预测范围内获得了更小的误差值。综上所述,LSTM更适合于更大的预测范围,而ARIMA更适合于近未来值的预测。
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引用次数: 1
Boric acid versus boron trioxide as catalysts for green energy source H2 production from sodium borohydride methanolysis 硼酸与三氧化二硼对绿色能源硼氢化钠甲醇分解制氢催化剂的影响
Pub Date : 2021-10-18 DOI: 10.51354/mjen.980286
Sahin Demirci, B. Arı, Sultan Bütün Şengel, Erk Inger, N. Sahiner
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引用次数: 4
Sedimentological and Mineralogical-Petrographic Characteristics of Miocene Evaporitic Deposits (SW Erzincan, East Anatolia) 东安纳托利亚Erzincan西南部中新世蒸发矿床的沉积学和矿物学岩石学特征
Pub Date : 2021-10-06 DOI: 10.51354/mjen.954609
P. Güngör Yeşilova, Şeyma Yavuz
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引用次数: 1
Study of the Activity of a Novel Green Catalyst Used in the Production of Hydrogen from Methanolysis of Sodium Borohydride 新型绿色硼氢化钠甲醇解制氢催化剂的活性研究
Pub Date : 2021-10-06 DOI: 10.51354/mjen.934839
Tulin Avci Hansu
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引用次数: 4
A CLEANER APPLICATION ON HYDROGEN SULFIDE 硫化氢的清洁应用
Pub Date : 2021-10-05 DOI: 10.51354/mjen.953547
Merve Aksu, M. Morcalı
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引用次数: 0
A TensorFlow implementation of Local Binary Patterns Transform 局部二值模式变换的TensorFlow实现
Pub Date : 2021-06-30 DOI: 10.51354/mjen.822630
D. Akgün
Feature extraction layers like Local Binary Patterns (LBP) transform can be very useful for improving the accuracy of machine learning and deep learning models depending on the problem type. Direct implementations of such layers in Python may result in long running times, and training a computer vision model may be delayed significantly. For this purpose, TensorFlow framework enables developing accelerated custom operations based on the existing operations which already have support for accelerated hardware such as multicore CPU and GPU. In this study, LBP transform which is used for feature extraction in various applications, was implemented based on TensorFlow operations. The evaluations were done using both standard Python operations and TensorFlow library for performance comparisons. The experiments were realized using images in various dimensions and various batch sizes. Numerical results show that algorithm based on TensorFlow operations provides good acceleration rates over Python runs. The implementation of LBP can be used for the accelerated computing for various feature extraction purposes including machine learning as well as in deep learning applications.
局部二进制模式(LBP)变换等特征提取层对于提高机器学习和深度学习模型的准确性非常有用,具体取决于问题类型。在Python中直接实现这些层可能会导致较长的运行时间,并且训练计算机视觉模型可能会大大延迟。为此,TensorFlow框架可以基于已经支持加速硬件(如多核CPU和GPU)的现有操作开发加速自定义操作。在本研究中,基于TensorFlow操作实现了各种应用中用于特征提取的LBP变换。评估是使用标准Python操作和TensorFlow库进行性能比较的。实验采用不同尺寸、不同批量的图像来实现。数值结果表明,基于TensorFlow操作的算法在Python运行中提供了良好的加速速率。LBP的实现可以用于各种特征提取目的的加速计算,包括机器学习和深度学习应用。
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引用次数: 1
Technologies based on energy savings for OLED devices 基于OLED设备节能的技术
Pub Date : 2021-06-28 DOI: 10.51354/mjen.872956
Mohammed Albaba, Meryem Sena Akkus
Recently, scientists are paying more attention to the Organic Light Emitting Diode (OLED) technology as it is being used in devices and displays to play videos and show photos with high resolution. This technology is used in products such as mobile phones, televisions, laptops, etc. To make the energy consumed less, new methods were shown up to prevent high energy consumption while presenting videos and photos on OLED devices and displays without losing their details and quality, one of the methods is a deep learning-based technique which is related to artificial intelligence. In this review paper, the last methods were discussed as well as their results. Saturation, brightness, contrast, and luminance are factors that impacting energy consumption. In terms of OLED mobile phones, there were a few studies that concentrated on turning off the unnecessary pixels which will be black as default, and as a result, the lifetime of batteries will be extended. Also, for OLED mobile phones, a web browser called Chameleon was presented as it has some modes to save the energy consumed while surfing the internet by remapping the displayed colors of the website.
最近,有机发光二极管(OLED)技术被用于高分辨率播放视频和显示照片的设备和显示器,科学家们越来越关注OLED技术。这项技术应用于手机、电视、笔记本电脑等产品。为了减少能量消耗,在OLED设备和显示器上展示视频和照片时,在不损失细节和质量的情况下避免高能量消耗的新方法被提出,其中一种方法是与人工智能相关的深度学习技术。本文对以上几种方法及其结果进行了综述。饱和度、亮度、对比度和亮度是影响能耗的因素。在OLED手机方面,有一些研究集中在关闭不必要的像素,这些像素将默认为黑色,从而延长电池的使用寿命。另外,还展示了OLED手机的网页浏览器“变色龙”(Chameleon),该浏览器具有通过重新映射网站显示的颜色来节省上网时消耗的能量的模式。
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引用次数: 0
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MANAS Journal of Engineering
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