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Investment Decisions and the Logic of Valuation. Linking Finance, Accounting, and Engineering 投资决策与估值逻辑。连接财务、会计和工程
Pub Date : 2020-02-12 DOI: 10.1007/978-3-030-27662-1
C. Magni
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引用次数: 21
Stabilization and Aging Studies of Babul Wood Vacuum Pyrolysis Oil as a Potential Biomass Energy Source 巴布尔木材真空热解油作为潜在生物质能源的稳定性和老化研究
Pub Date : 2020-02-07 DOI: 10.2139/ssrn.3707533
P. Ghodke, R. Naidu
In the present study, Babul wood biomass was considered as case study which is a highly reactive feedstock for pyrolysis and abundant in India. Vacuum pyrolysis of babul wood produce a bio-oil result in pH of 2.3, moisture content of 26.3 wt% due to which viscosity at room temperature was 73.6 cP. Chemical characterization reveals that the composition of bio-oil contains carboxylic acid (~5 wt%), carbonyl group (~2 wt%), furfurals (~2 wt%), phenols (~3 wt%) in major quantity. Aging studies of crude bio-oil had observed that moisture content and viscosity increase with time simultaneously phase separation occurred during the storage at room temperature. Stabilization of bio-oil was carried out to remove to improve the shelf life of bio-oil. After stabilization bio-oil was found to be stable in all properties throughout the study of 60 days at room temperature conditions.
在本研究中,以Babul木材生物质为研究对象,Babul木材生物质是一种高活性的热解原料,在印度储量丰富。巴布木真空热解制得的生物油pH值为2.3,室温粘度为73.6 cP,水分含量为26.3 wt%。化学表征表明,生物油主要由羧酸(~5 wt%)、羰基(~2 wt%)、糠醛(~2 wt%)、酚类(~3 wt%)组成。对生物油进行老化研究发现,生物油在常温下贮存过程中含水量和粘度随时间的增加而增加,同时发生相分离。对生物油进行稳定化处理,以提高生物油的保质期。在室温条件下,经过60天的研究,生物油的所有性能都是稳定的。
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引用次数: 0
Anti-Hyperlipidaemic Activity of Aqueous Dried Flower Extract of Hibiscus Sabdariffa Linn. in Albino Mice 芙蓉花水提取物抗高脂血症活性研究。在白化小鼠中
Pub Date : 2020-01-30 DOI: 10.2139/ssrn.3528040
Bhavani Keserla, Dr. Alagu Manivasagam, Natukula Praveen Kumar
Aim and objective: The primary objective of the study is to evaluate the antihyperlipidemic of the aqueous extracts of the dried flowers of Hibiscus sabdariffa Linn in rats. Introduction: In the scientific work was presented data of literary sources, which shows that the treatment of diseases that lead to increase in the cholesterol levels is the most common pathological condition of atherosclerosis, which today tends to increase its frequency and remains an urgent problem in modern medicine. It has been proven that the use of compounds of natural origin is effective for the treatment of this pathological condition. Materials and methods: The experimental part presents the results of preclinical biological tests for the study of acute toxicity and the specific pharmacological activity of H. sabdariffa Laboratory pharmacological, physiological, toxicological and methods of mathematical statistics are used in this work. Results and discussions: According to the results of the conducted preliminary phytochemical screening of the developed medicinal product, contains phytochemical constituents like carbohydrates, glycosides, flavonoids, saponins, terpenoids, tannins and fixed oils. The Aqueous dried flower extract of the H.sabdariffa Linn. shows the significant decrease in the total cholesterol level, rise in the HDL cholesterol level and the decrease in the HDL / total cholesterol level and also increase in the locomotory activity at a dose of 50mg/kg. The results suggest that the aqueous extract of the dried flowers of H. Sabdariffa Linn. possess the anti-hyperlipidaemic activity. The observed effects are due to the presence of bioactive substances.
目的与目的:研究芙蓉干花水提物对大鼠的降血脂作用。在科学工作中,提出了文献资料,这些资料表明,导致胆固醇水平升高的疾病的治疗是动脉粥样硬化最常见的病理状态,在今天,它的频率有增加的趋势,仍然是现代医学急需解决的问题。已经证明,使用天然来源的化合物对治疗这种病理状况是有效的。材料和方法:实验部分介绍了临床前生物学试验的结果,用于研究沙棘的急性毒性和特定的药理活性。本工作采用了实验室药理学、生理学、毒理学和数理统计的方法。结果与讨论:经初步植物化学筛选,所开发的药材含有碳水化合物、糖苷类、黄酮类、皂苷类、萜类、单宁类、固定油等植物化学成分。水提取物的干燥的沙棘花。50mg/kg剂量可显著降低大鼠总胆固醇水平,升高高密度脂蛋白胆固醇水平,降低高密度脂蛋白/总胆固醇水平,增加运动活性。研究结果表明,黄芪干花水提物具有较好的抗氧化活性。具有抗高血脂作用。观察到的效果是由于生物活性物质的存在。
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引用次数: 0
General Recommender Engine for Security of IoT Based Real Time Monitoring System 基于物联网的实时监控系统安全通用推荐引擎
Pub Date : 2020-01-29 DOI: 10.2139/ssrn.3527390
Durgansh Sharma, M. Kapoor
This paper is proposing a recommender engine for security of real time monitoring systems based on the IoT based architectures. Depending upon the dynamic requirement for the most scalable technology of IoT this paper is proposing a fuzzy logic based recommender system. This system shall adapt the circumstances and acquire the required factors to resolve the security issues.
本文提出了一种基于物联网架构的实时监控系统安全推荐引擎。针对物联网中最具可扩展性技术的动态需求,提出了一种基于模糊逻辑的推荐系统。该系统应适应环境,获取解决安全问题所需的因素。
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引用次数: 1
Intelligent Alcohol Detection System for Car Drivers 汽车驾驶员酒精智能检测系统
Pub Date : 2020-01-27 DOI: 10.2139/ssrn.3526008
Rahul Das, Oishik Chattopadhyay, P. Biswas, Monoram Das, Sumanta Chatterjee, A. Paul
Driving a car after the consumption of alcohol is one of the most dangerous things one can do. Several surveys show the reaction of a person during driving, that are seriously affected by alcohol. Concentrating on the safety of the people, driving a car, we propose a safety system for safe driving. We are implementing an Intelligent Alcohol Detection System with some other features to avoid accidents. The Alcohol Gas Sensor is used to sense the consumption of alcohol by the driver and this data is also given to ADC(Analog-to-Digital Converter). The ADC is used in this module to convert the analog signal to digital output. If the driver is tired and feeling sleepy, the eye blink sensor shall sense his condition and turn on the buzzer. We also used a tilt sensor to detect whether the vehicle is going in a normal condition or not. GSM (Global System for Mobile communication) and the GPS module is used to detect vehicle location. In this device we have implemented an alarm system if the alcohol level is above the normal permitted level, then the system will send car’s location to the nearest police station or the relatives of the driver and the ignition system of the car will go off after the detection.
酒后驾车是最危险的事情之一。几项调查显示了一个人在开车时的反应,严重受到酒精的影响。着眼于人的安全,驾驶汽车,我们提出了安全驾驶的安全系统。我们正在实施一个具有其他功能的智能酒精检测系统,以避免事故发生。酒精气体传感器用于检测驾驶员的酒精消耗量,并将该数据提供给ADC(模数转换器)。该模块使用ADC将模拟信号转换为数字输出。如果驾驶员感到疲倦和困倦,眨眼传感器将感应到他的状态,并打开蜂鸣器。我们还使用了一个倾斜传感器来检测车辆是否处于正常状态。GSM(全球移动通信系统)和GPS模块用于检测车辆位置。在这个装置中,我们实现了一个报警系统,当酒精浓度超过正常允许的水平时,系统会将汽车的位置发送给最近的派出所或司机的亲属,检测到后汽车的点火系统会自动点火。
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引用次数: 2
Improved Mirai Bot Scanner Summation Algorithm 改进的Mirai机器人扫描求和算法
Pub Date : 2020-01-15 DOI: 10.2139/ssrn.3519728
Faisal A. Garba, Sahalu B. Junaidu, Afolayan A. Obiniyi, Adekunle M. Ibrahim
Mirai is the most dangerous Distributed Denial of Service (DDoS)-capable IoT malware to date that is in the wild and yet very simple in nature. Mirai attack an array of Internet of Things (IoT) and embedded devices that ranges from Digital Video Recorders (DVRs), Internet Protocol (IP) cameras, routers and printers recruiting them to form a botnet. The biggest DDoS attack in history was executed using Mirai botnet. A recent study proposed the Mirai Bot Scanner Summation Prototype that analyzes the network traffic generated from Mirai bot host discovery. The Mirai Bot Scanner Summation Algorithm however, cannot recognize if a network traffic is truly Mirai bot host discovery traffic or not. Given any network traffic, the Mirai Bot Scanner Summation Prototype will proceed to summate and output number of bots, retransmission packets, number of packets and number of potential victim IoT devices using only the source Internet Protocol (IP) address and destination IP address of a packet without identifying if it is truly a Mirai bot host discovery packet or not. This paper present an Improved Mirai Bot Scanner Summation Algorithm that looks at the packet to determine whether it is a truly packet generated due to Mirai bot host discovery by looking at the TCP flag of the packet and the port number of the packet. To perform a host discovery Mirai bot sends out SYN packet over TELNET port 23 or 2323 to a randomly generated non-governmental IP addresses to establish a TCP 3-way handshake with a potentially vulnerable IoT device. The Improved Mirai Bot Scanner Summation Algorithm uses this condition to determine whether a packet is a Mirai bot host discovery packet or not. The Mirai Bot Scanner Summation Algorithm and the Improved Mirai Bot Scanner Summation Algorithm are evaluated using IoT Network Intrusion Dataset. The evaluation results have shown that the Improved Mirai Bot Scanner Summation Algorithm provides more accurate results than the Mirai Bot Scanner Summation Algorithm.
Mirai是迄今为止最危险的分布式拒绝服务(DDoS)物联网恶意软件,在野外,但本质上非常简单。Mirai攻击一系列物联网(IoT)和嵌入式设备,包括数字录像机(dvr)、互联网协议(IP)摄像机、路由器和打印机,招募它们形成僵尸网络。历史上最大的DDoS攻击是使用Mirai僵尸网络执行的。最近的一项研究提出了Mirai Bot扫描仪求和原型,该原型分析了Mirai Bot主机发现产生的网络流量。然而,Mirai Bot扫描求和算法无法识别网络流量是否真的是Mirai Bot主机发现流量。给定任何网络流量,Mirai Bot扫描仪求和原型将仅使用数据包的源互联网协议(IP)地址和目的IP地址继续求和并输出机器人数量、重传数据包、数据包数量和潜在受害物联网设备数量,而不确定它是否真的是Mirai Bot主机发现数据包。本文提出了一种改进的Mirai Bot扫描求和算法,该算法通过查看数据包的TCP标志和数据包的端口号来查看数据包,以确定它是否是由于Mirai Bot主机发现而生成的真正数据包。为了执行主机发现,Mirai机器人通过TELNET端口23或2323向随机生成的非政府IP地址发送SYN数据包,以与潜在易受攻击的物联网设备建立TCP 3-way握手。改进的Mirai Bot扫描求和算法使用此条件来确定数据包是否是Mirai Bot主机发现数据包。使用物联网网络入侵数据集对Mirai Bot扫描求和算法和改进的Mirai Bot扫描求和算法进行了评估。评估结果表明,改进的Mirai Bot扫描求和算法比Mirai Bot扫描求和算法提供了更准确的结果。
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引用次数: 1
An Technique for Big Statistics Security Based on Hadoop Distributed File System 基于Hadoop分布式文件系统的大统计安全技术
Pub Date : 2020-01-10 DOI: 10.2139/ssrn.3517196
S. D, Manu Y.M, DR.Ravikumar G.K
Cloud computing is used to store large amount of data because is low cost and flexible but in cloud data security important issue. In this paper we proposed approach encryption or decryption file using algorithm are AES and OTP using Hadoop here we encrypted file within HDFS and decrypted within maptask in existing system encrypted/decryption the usage of AES but report length degree accelerated with the aid of 50% from unique record however now enhance the ratio as length of the encrypted record accelerated by means of 20% from original file length and also we carried out new technique called HDFS.
云计算因其低成本和灵活性而被用于存储大量数据,但在云计算中数据的安全性是一个重要问题。在本文中,我们提出了使用AES和OTP算法加密或解密文件的方法,使用Hadoop,这里我们在HDFS中加密文件,在现有系统中在maptask中解密,使用AES加密/解密,但报告长度度从唯一记录加速50%,但是现在增加了加密记录长度从原始文件长度加速20%的比率,我们还进行了新的技术,称为HDFS。
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引用次数: 0
Design of a Low Power and High Speed Wallace Tree Encoder for Flash ADC 用于Flash ADC的低功耗高速华莱士树编码器的设计
Pub Date : 2020-01-09 DOI: 10.2139/ssrn.3516639
Shaik Rahil Hussain, Rajesh Kumar
An improved design of Wallace tree encoder is presented in this paper. Wallace tree encodes a thermometer code into binary code in a Flash ADC. It has the advantage of correcting bubble errors without the need of an extra bubble error correcting (BEC) block. It consists of full adder circuits and adds the number of 1’s generated through the comparator output in a Flash ADC. The new Wallace tree encoder is compared with the previously designed traditional Wallace tree encoder in 45nm technology. The results show that new design is efficient than the previous design. The proposed encoder dissipates 9.61μW power and has a delay of 29.5ps. The PDP and EDP is calculated to be 0.28 fJ and 0.83x10-26 Js.
本文提出了一种改进的华莱士树编码器设计。华莱士树编码温度计代码成二进制代码在一个Flash ADC。它的优点是可以在不需要额外的气泡纠错块的情况下纠正气泡误差。它由完整的加法器电路组成,并将Flash ADC中比较器输出产生的1的数量相加。新的Wallace树编码器与先前设计的传统45纳米技术的Wallace树编码器进行了比较。结果表明,新设计比旧设计更有效。该编码器功耗为9.61μW,延时为29.5ps。PDP和EDP分别为0.28 fJ和0.83x10-26 j。
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引用次数: 1
From Nano-Structure to Laves Phase: Reduced Thermal Conductivity from Medium-Entropy Alnbv to High-Entropy Alnbvcrti Alloys 从纳米结构到片状相:中熵Alnbv合金到高熵Alnbvcrti合金的导热性降低
Pub Date : 2020-01-01 DOI: 10.2139/ssrn.3678818
Meng-Jie Jhong, I-Lun Jen, Kuang‐Kuo Wang, Wan-ting Yen, Jacob C. Huang, J. Jang, K. Hsieh, Hsin-jay Wu
In recent years the emerge of high-entropy alloys (HEAs) imposes an evolution in metallic materials, which breaks the boundaries set by the traditional alloys. Alongside the development of HEAs, the medium-entropy alloys (MEAs), which comprise two to four majority elements, also reveal the outperforming properties with less compositional complexity. Among them, the medium-entropy AlNbV alloys attract great attention owing to the existence of a body-centered cubic (BCC) solid solution that contains soluble Al, Nb, and V elements. Herein, we construct the phase diagrams for the Al-Nb-V system and define the equilibrium homogeneity by thermally-equilibrated ternary alloys underwent a post-annealing at 1073 K or 1273 K. Meanwhile, a superposition of phase diagram and thermal conductivity κ mapping suggests that the coexistence of BCC solid solution and nano-grained AlNb2 brings down the κ. With the incorporation of Ti and Cr, the HEA AlNbVCrTi, which is composed of Laves C14 phase and BCC solid solution, achieves an ultralow κ of 6 – 10 Wm-1K-1 within 323 – 723 K.
近年来,高熵合金的出现给金属材料带来了新的发展,打破了传统合金的界限。随着HEAs的发展,由两到四个主要元素组成的中熵合金(MEAs)也显示出较低成分复杂性的优异性能。其中,中熵AlNbV合金由于存在可溶Al、Nb和V元素的体心立方(BCC)固溶体而备受关注。在此,我们构建了Al-Nb-V体系的相图,并定义了在1073 K或1273 K下经过后退火的热平衡三元合金的平衡均匀性。同时,相图和导热系数κ图谱的叠加表明,BCC固溶体和纳米AlNb2的共存降低了κ。在Ti和Cr的掺入下,由Laves C14相和BCC固溶体组成的HEA AlNbVCrTi在323 ~ 723 K内达到了6 ~ 10 Wm-1K-1的超低κ值。
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引用次数: 0
Hotspot Revelation in Solar Panel Using Sparse Reconstruction and Extreme Learning Machine 基于稀疏重建和极限学习机的太阳能板热点揭示
Pub Date : 2020-01-01 DOI: 10.31224/osf.io/7gy2j
R. Saranya, R. Karthikeyan, K. Manivannan
In today’s world, solar panel is one of the major sources for generating power directly from the sunlight by using electronic processes and there is no greenhouse emission in photo-voltaic cell as it does not require any other source of fuel like coal, natural gas, oil, nuclear power systems. Hotspot is one of the main causes of photo-voltaic cell which occurs due to the dissipation of power in shaded cells. In the existing literature, the hotspot in solar panel is detected by using various algorithms and techniques but it does not improve accuracy, performance, temperature distribution, problem like over-fitting and under-fitting also exists. To overcome that, the proposed work deals with capturing the hotspot as thermal image through an infrared camera which is mainly used for temperature distribution. For identifying hotspot, the features like shade, correlation, contrast, energy, entropy, homogeneity, prominence, sparse are extracted using sparse reconstruction and GLCM algorithms. The features are given to the classification algorithm named as Extreme earning Machine which gives the good generalization performance and improves accuracy higher when compared to other algorithms. The over-fitting and under-fitting problem can also be rectified by using these algorithms. Finally using extreme learning machine, the percentage of hotspot in photo-voltaic cell can be identified.
在当今世界,太阳能电池板是利用电子过程直接从阳光中发电的主要来源之一,光伏电池没有温室气体排放,因为它不需要任何其他燃料来源,如煤,天然气,石油,核电系统。热点是光伏电池产生的主要原因之一,它是由于遮阳电池的功率耗散而产生的。在现有文献中,太阳能电池板的热点检测采用了各种算法和技术,但并没有提高精度、性能和温度分布,还存在过拟合和欠拟合的问题。为了克服这一问题,本文提出了利用主要用于温度分布的红外摄像机以热图像的形式捕获热点的方法。为了识别热点,使用稀疏重建和GLCM算法提取阴影、相关性、对比度、能量、熵、均匀性、突出性、稀疏等特征。极限学习机分类算法具有良好的泛化性能,与其他分类算法相比准确率有了更高的提高。利用这些算法还可以纠正过拟合和欠拟合问题。最后利用极值学习机识别出光伏电池中热点的百分比。
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引用次数: 0
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EngRN: Engineering Design Process (Topic)
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