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2017

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Articles 9541 - 9570 of 9584

Full-Text Articles in Engineering

Get Rid Of Your Student's Fear And Intimidation Of Learning A Programming Language, Christina Frederick, Matt B. Pierce, Andrew Calvin Griggs, Lulu Sun, Li Ding Jan 2017

Get Rid Of Your Student's Fear And Intimidation Of Learning A Programming Language, Christina Frederick, Matt B. Pierce, Andrew Calvin Griggs, Lulu Sun, Li Ding

Publications

Knowledge of computer programming is very beneficial and often required for engineering students. Unfortunately, students frequently experience fear and intimidation regarding introductory programming courses. Second language acquisition (SLA) techniques have shown promise as a means of content delivery in programming courses. Blended learning environments are also becoming increasingly popular in course frameworks. This workshop will discuss the application of second language acquisition in a blended learning environment (SLA-aBLe) and will examine the effectiveness of using SLA techniques to teach introductory programming. The proposed workshop will also share instructor experience(s), provide course materials, and review student outcomes from this two year …

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Smartphone Based Ubiquitous Sensing Platform Leveraging Audio Jack For Power And Communication, Ranjana Joshi Jan 2017

Smartphone Based Ubiquitous Sensing Platform Leveraging Audio Jack For Power And Communication, Ranjana Joshi

Dissertations and Theses @ UNI

With the popularization of smartphones, various smartphone centric ubiquitous sensing applications, which use a smartphone in conjunction with external sensors for data acquisition, processing, display, communication, and storage, have emerged. Because smartphones do not have a universal data interfaces, many ubiquitous sensing applications use the earphone and the microphone channels of the 3.5mm audio interface for data communications so that they can work with various types of smartphones. The earphone channels of the 3.5mm audio interface can only send AC signal out of a smartphone, hence DC power needs to be harvested from the earphone channels.

In this research, based …

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Multi-Site Simultaneous Time-Resolved Photometry With A Low Cost Electro-Optics System, Forrest Gasdia, Aroh Barjatya, Sergei Bilardi Jan 2017

Multi-Site Simultaneous Time-Resolved Photometry With A Low Cost Electro-Optics System, Forrest Gasdia, Aroh Barjatya, Sergei Bilardi

Publications

Sunlight reflected off of resident space objects can be used as an optical signal for astrometric orbit determination and for deducing geometric information about the object. With the increasing population of small satellites and debris in low Earth orbit, photometry is a powerful tool in operational support of space missions, whether for anomaly resolution or object identification. To accurately determine size, shape, spin rate, status of deployables, or attitude information of an unresolved resident space object, multi-hertz sample rate photometry is required to capture the relatively rapid changes in brightness that these objects can exhibit. OSCOM, which stands for Optical …

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Infographic: Lessons Learned From Successful Black Male "Buoyant Believers" In Engineering And Engineering-Related Fields, Leroy L. Long Iii, William Wanyagah Jan 2017

Infographic: Lessons Learned From Successful Black Male "Buoyant Believers" In Engineering And Engineering-Related Fields, Leroy L. Long Iii, William Wanyagah

Publications

Infographic about lessons learned from successful black male "buoyant believers" in engineering and engineering-related fields.

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An Experimental Study Of Non-Metallic Inclusions Precipitation And Its Effect On Impact Toughness Variations In Low Alloy Steel Subjected To Complex Deoxidation, Pavel Bizyukov Jan 2017

An Experimental Study Of Non-Metallic Inclusions Precipitation And Its Effect On Impact Toughness Variations In Low Alloy Steel Subjected To Complex Deoxidation, Pavel Bizyukov

Dissertations and Theses @ UNI

A low level of non-metallic inclusions in steel is the key requirement in the concept of clean steel. Although the concept has received its name quite recently, it has been implemented at the large-scale steel mills for more than 40 years. Production of clean steel became possible due active development and adoption of the post-melting treatment of molten metal in the teeming ladle. Ladle metallurgy, an umbrella term for various methods of treatment, includes operations that cannot be performed during primary metallurgical processes such as melting in an electric arc, basic oxygen, or air induction furnace. Initially, the most common …

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Quality Assessment Of Adhesive Bond Based On Dielectric Properties, Muthu Ram Prabhu Elenchezhian, Vamsee Vadlamudi, Priyanshu Kumar Banerjee, Chaitanya Dave, Anik Mahmood, Rassel Raihan Jan 2017

Quality Assessment Of Adhesive Bond Based On Dielectric Properties, Muthu Ram Prabhu Elenchezhian, Vamsee Vadlamudi, Priyanshu Kumar Banerjee, Chaitanya Dave, Anik Mahmood, Rassel Raihan

Institute of Predictive Performance Methodologies (IPPM-UTARI)

Composite materials are widely used in Aerospace, Marine and Automotive structures to reduce weight and increase performance. Adhesive bonding improves the stress distribution between the composite materials / dissimilar materials and ensures a lighter structure than conventional fastener joints. But still there is not much research on the Non-Destructive strength estimation and life prediction, or the damage prognosis of the adhesive bond. One of the main problems when using adhesive bonding is a "kissing bond" which is a weak adhesion bond alternatively called zero volume disbond. Typically, convectional non-destructive methods cannot detect this kissing bond. Broadband Dielectric Spectroscopy, BbDS, is …

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From Gd2o3suspension To Nanocomposite: Synthesis, Properties And Radiation Protection, Ly B. T. La Jan 2017

From Gd2o3suspension To Nanocomposite: Synthesis, Properties And Radiation Protection, Ly B. T. La

Theses: Doctorates and Masters

This study provides details for the design, preparation of an environmentally friendly, clinically safe and lightweight radiation protective shield made ofGd2O3/epoxy nanocomposite (Gd-nanocomposite) which is proposed as an alternative to traditional toxic lead (Pb)-based aprons for diagnostic X-ray protection. In theory, this particulate nanocomposite can possess significant features of both inorganic particles and organic polymeric matrices. However, in practice, its performance does not simply depend on the sum of the individual contributions of characteristics of the constituent phases but on the interaction of their inner interfaces and the homogeneous dispersion of inorganic particles in the polymer matrix.

The miniaturization of …

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Smart Home Energy Management: An Analysis Of A Novel Dynamic Pricing And Demand Response Aware Control Algorithm For Households With Distributed Renewable Energy Generation And Storage, Jamal Abushnaf Jan 2017

Smart Home Energy Management: An Analysis Of A Novel Dynamic Pricing And Demand Response Aware Control Algorithm For Households With Distributed Renewable Energy Generation And Storage, Jamal Abushnaf

Theses: Doctorates and Masters

Home energy management systems (HEMS) technology can provide a smart and efficient way of optimising energy usage in residential buildings. One of the main goals of the Smart Grid is to achieve Demand Response (DR) by increasing end users’ participation in decision making and increasing the level of awareness that will lead them to manage their energy consumption in an efficient way. This research presents an intelligent HEMS algorithm that manages and controls a range of household appliances with different demand response (DR) limits in an automated way without requiring consumer intervention. In addition, a novel Multiple Users and Load …

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Processing, Microstructure And Mechanical Properties Of Beta-Type Titanium Porous Structures Made By Additive Manufacturing, Yujing Liu Jan 2017

Processing, Microstructure And Mechanical Properties Of Beta-Type Titanium Porous Structures Made By Additive Manufacturing, Yujing Liu

Theses: Doctorates and Masters

Tissue engineering through the application of a low modulus, high strength format as a potential approach for increasing the durability of bone implants has been attracting significant attention. Titanium alloys are widely used for biomedical applications because of their low modulus, high biocompatibility, specific strength and corrosion resistance. These reasons affirm why titanium alloy is selected as the specific material to research. The development of low modulus biomaterials is considered to be an effective method to remove the mismatch between biomaterial implants and surrounding bone tissue, thereby reducing the risk of bone resorption. So far, Ti–24Nb–4Zr–8Sn alloy (abbreviated hereafter as …

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A Holistic Approach To Managing Microalgae For Biofuel Applications, Pau Loke Show Dec 2016

A Holistic Approach To Managing Microalgae For Biofuel Applications, Pau Loke Show

Pau Loke Show

No abstract provided.

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Bonus.Jpg, Judi Poker Online Dec 2016

Bonus.Jpg, Judi Poker Online

judi poker online

Jika Anda bersama-sama dengan poker, Anda akan menyukai bagaimana berpartisipasi dalam Pai Gow. Poker poker Pai Gow - perubahan puncak menara 7-kartu, terutama didasarkan pada olahraga Cina dengan rak disesuaikan domino yang sama. Cari tahu bagaimana untuk berpartisipasi dalam arah Pai Gow poker sedikit lebih intens dari perbedaan lain dalam poker, Pai Gow tapi - itu banyak hal yang menarik dan dapat menempatkan menyenangkan di kasino. Anda dapat memilih untuk belajar bagaimana menikmati jaringan di seluruh dunia Pai Gow kasino judi poker online terpercaya yang akan beroperasi di peringkat kredit atau fakta-fakta sederhana, tetapi lebih pada pendapatan; Kemudian segera setelah …

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Autopath: Harnessing Parallel Execution Paths For Efficient Resource Allocation In Multi-Stage Big Data Frameworks, Han Gao, Zhengyu Yang, Janki Bhimani, Teng Wang, Jiayin Wang, Ningfang Mi, Bo Sheng Dec 2016

Autopath: Harnessing Parallel Execution Paths For Efficient Resource Allocation In Multi-Stage Big Data Frameworks, Han Gao, Zhengyu Yang, Janki Bhimani, Teng Wang, Jiayin Wang, Ningfang Mi, Bo Sheng

Zhengyu Yang

Due to the flexibility of data operations and scalability of in-memory cache, Spark has revealed the potential to become the standard distributed framework to replace Hadoop for data-intensive processing in both industry and academia. However, we observe that the built-in scheduling algorithms in Spark (i.e., FIFO and FAIR) are not optimized for the applications with multiple parallel and independent branches in stages. Specifically, the child stage needs to wait and collect data from all its parent branches, but this wait has no guaranteed upper bound since it is tightly coupled with each branch’s workload characteristic, stage order, and their corresponding …

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Analytical Model Of Sic Mosfet For Accurately Predicting The Switching Performance, Mei Liang Dec 2016

Analytical Model Of Sic Mosfet For Accurately Predicting The Switching Performance, Mei Liang

Kang Peng

No abstract provided.

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Finite Element Simulation Of Prevention Thermal Cracking In Mass Concrete, Juncai Xu, Zhengzhong Shen, Song Yang, Xin Xie, Zhengyu Yang Dec 2016

Finite Element Simulation Of Prevention Thermal Cracking In Mass Concrete, Juncai Xu, Zhengzhong Shen, Song Yang, Xin Xie, Zhengyu Yang

Zhengyu Yang

Mass concrete structures play a very important role in civil engineering. The cracking of concrete is regarded as one of the biggest engineering problems. Therefore, it is very necessary for the cracking of mass concrete to do the control analysis. Some factors should be considered in mass concrete crack control analysis, mainly including the heat releases model of concrete, the mechanical model to the concrete, the process of temperature control in the pipe model. Differential evolution algorithm and equivalent algorithm are adopted to solve the coefficient of adiabatic temperature and cool water effect. In the paper, stress field calculation, back …

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Fim: Performance Prediction For Parallel Computation In Iterative Data Processing Applications, Janki Bhimani, Ningfang Mi, Miriam Leeser, Zhengyu Yang Dec 2016

Fim: Performance Prediction For Parallel Computation In Iterative Data Processing Applications, Janki Bhimani, Ningfang Mi, Miriam Leeser, Zhengyu Yang

Zhengyu Yang

Predicting performance of an application running on high performance computing (HPC) platforms in a cloud environment is increasingly becoming important because of its influence on development time and resource management. However, predicting the performance with respect to parallel processes is complex for iterative, multi-stage applications. This research proposes a performance approximation approach FiM to model the computing performance of iterative, multi-stage applications running on a master-compute framework. FiM consists of two key components that are coupled with each other: 1) Stochastic Markov Model to capture non-deterministic runtime that often depends on parallel resources, e.g., number of processes. 2) Machine Learning …

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Ea2s2: An Efficient Application-Aware Storage System For Big Data Processing In Heterogeneous Clusters, Teng Wang, Jiayin Wang, Son Nam Nguyen, Zhengyu Yang, Ningfang Mi, Bo Sheng Dec 2016

Ea2s2: An Efficient Application-Aware Storage System For Big Data Processing In Heterogeneous Clusters, Teng Wang, Jiayin Wang, Son Nam Nguyen, Zhengyu Yang, Ningfang Mi, Bo Sheng

Zhengyu Yang

Big data processing frameworks such as Hadoop have been widely adopted to process a large volume of data. A lot of prior work has focused on the allocation of resources and the execution order of jobs/tasks to improve the performance in a homogeneous cluster. In this paper, we investigate storage layer design in a heterogeneous system considering a new type of bundled jobs where the input data and associated application jobs are submitted in a bundle. Our goal is to break the barrier between resource management and the underlying storage layer, and improve data locality, an important performance factor for …

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Accelerating Big Data Applications Using Lightweight Virtualization Framework On Enterprise Cloud, Janki Bhimani, Zhengyu Yang, Miriam Leeser, Ningfang Mi Dec 2016

Accelerating Big Data Applications Using Lightweight Virtualization Framework On Enterprise Cloud, Janki Bhimani, Zhengyu Yang, Miriam Leeser, Ningfang Mi

Zhengyu Yang

Hypervisor-based virtualization technology has been successfully used to deploy high-performance and scalable infrastructure for Hadoop, and now Spark applications. Container-based virtualization techniques are becoming an important option, which is increasingly used due to their lightweight operation and better scaling when compared to Virtual Machines (VM). With containerization techniques such as Docker becoming mature and promising better performance, we can use Docker to speed-up big data applications. However, as applications have different behaviors and resource requirements, before replacing traditional hypervisor-based virtual machines with Docker, it is important to analyze and compare performance of applications running in the cloud with VMs and …

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Enhancing Ssds With Multi-Stream: What? Why? How?, Janki Bhimani, Jingpei Yang, Zhengyu Yang, Ningfang Mi, N. H. V. Krishna Giri, Rajinikanth Pandurangan, Changho Choi, Vijay Balakrishnan Dec 2016

Enhancing Ssds With Multi-Stream: What? Why? How?, Janki Bhimani, Jingpei Yang, Zhengyu Yang, Ningfang Mi, N. H. V. Krishna Giri, Rajinikanth Pandurangan, Changho Choi, Vijay Balakrishnan

Zhengyu Yang

The adoption of SSDs has become very prominent, but they still suffer from challenges to control write amplification. Traditional SSDs have single active append point where new data writes can be stored. Data of different lifetime stored together causes high write amplification. Recently, multi-stream SSDs are developed that allows multiple active append points. These multiple active append points can be used to store data of different lifetime in different locations within SSD. Such a data placement according to the lifetime of data would considerably reduce internal write amplification of SSD. For using multistream SSDs it is required to attach stream-id …

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Seina: A Stealthy And Effective Internal Attack In Hadoop Systems, Jiayin Wang, Teng Wang, Zhengyu Yang, Ying Mao, Ningfang Mi, Bo Sheng Dec 2016

Seina: A Stealthy And Effective Internal Attack In Hadoop Systems, Jiayin Wang, Teng Wang, Zhengyu Yang, Ying Mao, Ningfang Mi, Bo Sheng

Zhengyu Yang

Big data processing frameworks such as Hadoop [1] have been widely adopted in the past few years. However, the security issues in such large scale systems have not been well studied yet. While most of the prior work is focused on the data privacy and protection, this paper investigates a potential attack from a compromised internal node against the overall system performance. We explore the vulnerabilities of the existing Hadoop system, and develop an effective attack launched from the compromised node that can significantly degrade the data processing performance of the cluster without being detected and blacklisted for job execution. …

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Forecasting Mbt Technologies Using Dea And Lr, Yonghee Cho, Timothy R. Anderson Dec 2016

Forecasting Mbt Technologies Using Dea And Lr, Yonghee Cho, Timothy R. Anderson

Joseph Cho

First, this paper explores Main Battle Tank (MBT) data set with different
statistical methods in order to decide the most appropriate variables as
reliable  yardsticks  in  applying  technology  forecasting  (TF)  using  data
envelopment analysis (TFDEA) technique. It then applies TF using DEA
method to forecast MBT technologies. This article attempts to predict
technology  development  year  of  MBT  commercialised  from  1941  to
1994. This article presents the processes of TFDEA in detail and identifies
some  issues  to  search  for  appropriate  input  and  output  variables  to
forecast MBT technologies. The purpose of this study is to address some
issues and identify an …

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Comparing Caenorhabditis Elegans Gentle And Harsh Touch Response Behavior Using A Multiplexed Hydraulic Microfluidic Device, Patrick D. Mcclanahan, Joyce Xu, Christopher Fang-Yen Dec 2016

Comparing Caenorhabditis Elegans Gentle And Harsh Touch Response Behavior Using A Multiplexed Hydraulic Microfluidic Device, Patrick D. Mcclanahan, Joyce Xu, Christopher Fang-Yen

Christopher Fang-Yen

The roundworm Caenorhabditis elegans is an important model system for understanding the genetics and physiology of touch. Classical assays for C. elegans touch, which involve manually touching the animal with a probe and observing its response, are limited by their low throughput and qualitative nature. We developed a microfluidic device in which several dozen animals are subject to spatially localized mechanical stimuli with variable amplitude. The device contains 64 sinusoidal channels through which worms crawl, and hydraulic valves that deliver touch stimuli to the worms. We used this assay to characterize the behavioral responses to gentle touch stimuli and the …

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An Algorithm For Non-Steady Thermal Dynamics Finite Element Simulation And Differential Evolution, Juncai Xu, Zhenzhong Shen, Qingwen Ren, Xin Xie, Zhengyu Yang Dec 2016

An Algorithm For Non-Steady Thermal Dynamics Finite Element Simulation And Differential Evolution, Juncai Xu, Zhenzhong Shen, Qingwen Ren, Xin Xie, Zhengyu Yang

Zhengyu Yang

Thermodynamic parameters of concrete are the significant condition in the preventing mass concrete cracking computation. The concrete inversion problem of thermodynamic parameters is a multi-parameter optimization problem. Differential Evolution is one of the optimization method of evolutionary and developed from GA (genetic algorithm). In this paper, non-steady temperature field finite element simulation and DE (Differential Evolution) combined together to establish DE inverse solution for concrete thermodynamic parameter including equivalent heat source method to realize water-pipe cooling simulation. The procedure was implemented in mode with high computational efficiency and being high accuracy. It is an effective way to select thermal parameters …

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Ri56.Pdf, João F. Gomes Dec 2016

Ri56.Pdf, João F. Gomes

João F Gomes

No abstract provided.

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Calcium Rich Food Wastes Based Catalysts For Biodiesel Production, João F. Gomes Dec 2016

Calcium Rich Food Wastes Based Catalysts For Biodiesel Production, João F. Gomes

João F Gomes

No abstract provided.

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Automatic And Scalable Data Replication Manager In Distributed Computation And Storage Infrastructure Of Cyber-Physical Systems, Zhengyu Yang, Janki Bhimani, Jiayin Wang, David Evans, Ningfang Mi Dec 2016

Automatic And Scalable Data Replication Manager In Distributed Computation And Storage Infrastructure Of Cyber-Physical Systems, Zhengyu Yang, Janki Bhimani, Jiayin Wang, David Evans, Ningfang Mi

Zhengyu Yang

Cyber-Physical System (CPS) is a rising technology that utilizes computation and storage resources for sensing, processing, analysis, predicting, understanding of field-data, and then uses communication resources for interaction, intervene, and interface management, and finally provides control for systems so that they can inter-operate, evolve, and run in a stable evidence-based environment. There are two major demands when building the storage infrastructure for a CPS cluster to support above-mentioned functionalities: (1) high I/O and network throughput requirements during runtime, and (2) low latency demand for disaster recovery. To address challenges brought by these demands, in this paper, we propose a complete …

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Lomcf: Forwarding And Caching In Named Data Networking-Based Manets, Rana Asif Rehman, Byung-Seo Kim Dec 2016

Lomcf: Forwarding And Caching In Named Data Networking-Based Manets, Rana Asif Rehman, Byung-Seo Kim

Rana Asif Rehman

Named data networking (NDN) resolves the traditional TCP/IP based Internet problems (i.e., location dependent, complex usage, scalability, poor resource utilization etc.) and is considered as an eligible candidate for futuristic Internet paradigm. In NDN-based mobile ad hoc networks (MANETs), the participating nodes are operated in highly dynamic and challenge able environment such as low battery power, channel fluctuations, intermittent connectivity and so on. Due to the broadcast nature of the wireless channel, the NDN-based MANETs highlight severe issues (e.g., packet collisions, flooding, data redundancy, packet retransmissions), which further degrade the network performance. In this paper, to cope with these problems, …

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Efficient L-Shape Fitting For Vehicle Detection Using Laser Scanners, Xiao Zhang Dec 2016

Efficient L-Shape Fitting For Vehicle Detection Using Laser Scanners, Xiao Zhang

Xiao Zhang

No abstract provided.

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Efficient Data Caching Management In Scalable Multi-Stage Data Processing Systems, Jiayin Wang, Zhengyu Yang, David Evans Dec 2016

Efficient Data Caching Management In Scalable Multi-Stage Data Processing Systems, Jiayin Wang, Zhengyu Yang, David Evans

Zhengyu Yang

According to some example embodiments, a method includes: receiving, by a processor, from a data source, a processing profile comprising input data blocks and a plurality of operations for executing using the input data blocks; executing, by the processor, one or more of the operations of the processing profile to generate a new output data after each of the executed one or more operations; storing, by the processor, the new output data from at least one of the one or more operations as intermediate cache data; and transmitting, by the processor, the new output data from a final operation from …

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Automatic Data Replica Manager In Distributed Caching And Data Processing System, Zhengyu Yang, Jiayin Wang, David Evans Dec 2016

Automatic Data Replica Manager In Distributed Caching And Data Processing System, Zhengyu Yang, Jiayin Wang, David Evans

Zhengyu Yang

A method of data storage includes determining a latency distance from a primary node to each of two or more replica nodes, choosing a preferred replica node of the two or more replica nodes based on the determined latency distances, and write-caching data into the preferred replica node.

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Adaptive Caching Replacement Manager With Dynamic Updating Granularities And Partitions For Shared Flash-Based Storage System, Zhengyu Yang, David Evans, Jiayin Wang Dec 2016

Adaptive Caching Replacement Manager With Dynamic Updating Granularities And Partitions For Shared Flash-Based Storage System, Zhengyu Yang, David Evans, Jiayin Wang

Zhengyu Yang

A method of adjusting temporal and spatial granularities associated with operation of a virtualized file system, the method including analyzing past workloads of a plurality of virtual machines associated with the virtualized file system, and adjusting the temporal and spatial granularities to be similar to average re-access temporal and spatial distances of data sets corresponding to the past workloads.

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