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Full-Text Articles in Engineering

Jual Obat Aborsi Di Ambon 0821-4917-6664 Obat Aborsi Cytotc Asli Ambon Sulawesi, Obat Aborsi Sulawesi Mar 2109

Jual Obat Aborsi Di Ambon 0821-4917-6664 Obat Aborsi Cytotc Asli Ambon Sulawesi, Obat Aborsi Sulawesi

Obat Aborsi Sulawesi

Jual obat aborsi ambon, jual obat aborsi cod ambon, obat aborsi ambon, jual cytotec apotik ambon, penjual cytotec di ambon, tempat aborsi ambon, bidan aborsi ambon, alamat penjual obat aborsi di ambon, biaya kuret di ambon, penjual obat aborsi di ambon,harga obat aborsi di ambon, toko obat aborsi di ambon, klinik aborsi ambon, klinik kuret ambon, obat aborsi area ambon,obat aborsi kota ambon, obat aborsi daerah ambon, obat aborsi wilayah ambon, jual obat cytotec ambon, cytotec cod ambon, jual gastrul di ambon, apotik yang menjual cytotec di ambon, tempat penjualan cytotec ambon, obat penggugur kandungan di ambon, obat ...


An Analysis Of The Barriers To And Drivers Of Green Public Procurement In Achieving A More Sustainable Construction Industry, Myles Keaveney, Paul Butler Mar 2104

An Analysis Of The Barriers To And Drivers Of Green Public Procurement In Achieving A More Sustainable Construction Industry, Myles Keaveney, Paul Butler

Conference papers

The public sector in Ireland possesses enormous purchasing power which has the strength to affect production and consumption trends in all market sectors. Environmental purchasing tools such as Green Public Procurement (GPP) are seen by many as the solution to greener purchasing decisions in order to obtain and maintain not only a more sustainable construction sector but also a more sustainable economy. The purpose of this research is to determine and examine the key barriers to and drivers of implementing GPP in public procurement departments in order to reduce the effect construction works have on the environment. There was limited ...


Design Of Microwave Lowpass Filters Based On Metamaterial Components, Mushtaq Ahmed Dec 2103

Design Of Microwave Lowpass Filters Based On Metamaterial Components, Mushtaq Ahmed

Mushtaq A. Alqaisy

No abstract provided.


Potential Water Treatment Residual Used For Eutrophication Prevention: Varying Bake Time And Wet-Dry Release Experiments, Noor Fahoum Jan 2022

Potential Water Treatment Residual Used For Eutrophication Prevention: Varying Bake Time And Wet-Dry Release Experiments, Noor Fahoum

Williams Honors College, Honors Research Projects

A challenge faced today in water ways is the excessive growth of algae due to eutrophication. These harmful algal blooms create problems for the environment and safety concerns for the use of water for drinking purposes. An increase in limiting nutrients such as nitrogen and phosphorus are one of the factors that contribute to eutrophication. This is a concern for the Akron Water Treatment plant where preventative measures are being taken to avoid the potential formation of harmful algal blooms and the cyanotoxins they may release in the water. Through various studies, water treatment residuals (WTR) have been found to ...


3d Bionic Arm, Anny Baez Silfa Dec 2021

3d Bionic Arm, Anny Baez Silfa

Publications and Research

Previous work had been done on what was an adaptation of a robotic arm for Roboqueen, which is a persistent research project of the Department of Computer Engineering Technology. This robotic arm consisted of removing the cardboard hands from the Roboqueen and being replaced by 3D printed fingers and wrists to add functionality that did not exist before. Servo motors connected to Arduinos hidden in the forearm will be used to move the fingers and pick up and hold objects in the hand. Currently, the Finger Myoware is an update of the robotic arm in order to understand how prosthetic ...


Understanding Students’ Global Interdependence In Science Instruction, Walter S. Smith Dec 2021

Understanding Students’ Global Interdependence In Science Instruction, Walter S. Smith

Journal of Global Education and Research

Multiple American educational organizations such as the National Education Association, Association for Supervision and Curriculum Development, and the Council of Chief State School Officers have advocated for globalizing the K-12 curriculum. The National Science Teaching Association (NSTA) in a position statement on international education and the Next Generation Science Standards have produced goals and standards for internationalizing the science curriculum by addressing topics such as climate change, environment, and disease that cross borders. In contrast to those pronouncements on the curriculum, this article views global science education through an instructional lens that focuses on a students’ global interdependence in science ...


Purification Of I-129 From Spent Pwr Fuel, Sydney B. Whitaker, Kaitlyn Pierson, Kaylie Richard, Samantha Cahill Dec 2021

Purification Of I-129 From Spent Pwr Fuel, Sydney B. Whitaker, Kaitlyn Pierson, Kaylie Richard, Samantha Cahill

Chancellor’s Honors Program Projects

No abstract provided.


Online Parameter Estimation Under Non-Persistent Excitations For High-Rate Dynamic Systems, Jin Yan, Simon Laflamme, Jonathan Hong, Jacob Dodson Dec 2021

Online Parameter Estimation Under Non-Persistent Excitations For High-Rate Dynamic Systems, Jin Yan, Simon Laflamme, Jonathan Hong, Jacob Dodson

Civil, Construction and Environmental Engineering Publications

High-rate dynamic systems are defined as systems experiencing dynamic events of typical amplitudes higher than 100 gn for a duration of less than 100 ms. They are characterized by 1) large uncertainties on the external loads; 2) high levels of nonstationarity and heavy disturbance; and 3) generation of unmodeled dynamics from changes in mechanical configuration. To fully enable these systems, feedback capabilities must be developed. This includes computationally fast software and low latency hardware. This paper presents a pure time-based online parameter estimation algorithm for high-rate dynamic systems with real-time applicability. The algorithm is based on a model reference ...


Enterprise Environment Modeling For Penetration Testing On The Openstack Virtualization Platform, Vincent Karovič Jr., Jakub Bartaloš, Vincent Karovič, Michal Greguš Dec 2021

Enterprise Environment Modeling For Penetration Testing On The Openstack Virtualization Platform, Vincent Karovič Jr., Jakub Bartaloš, Vincent Karovič, Michal Greguš

Journal of Global Business Insights

The article presents the design of a model environment for penetration testing of an organization using virtualization. The need for this model was based on the constantly increasing requirements for the security of information systems, both in legal terms and in accordance with international security standards. The model was created based on a specific team from the unnamed company. The virtual working environment offered the same functions as the physical environment. The virtual working environment was created in OpenStack and tested with a Linux distribution Kali Linux. We demonstrated that the virtual environment is functional and its security testable. Virtualizing ...


Array-Based Guided Wave Source Location Using Dispersion Compensation, Andrew Downs, Ronald A. Roberts, Jiming Song Nov 2021

Array-Based Guided Wave Source Location Using Dispersion Compensation, Andrew Downs, Ronald A. Roberts, Jiming Song

Electrical and Computer Engineering Publications

An important advantage of guided waves is their ability to propagate large distances and yield more information about flaws than bulk waves. Unfortunately, the multi-modal, dispersive nature of guided waves makes them difficult to use for locating flaws. In this work, we present a method and experimental data for removing the deleterious effects of multi-mode dispersion allowing for source localization at frequencies comparable to those of bulk waves. Time domain signals are obtained using a novel 64-element phased array and processed to extract wave number and frequency spectra. By an application of Auld’s electro-mechanical reciprocity relation, mode contributions are ...


Predicting The Spatiotemporal Exposure Of Aquatic Species To Intrusions Of Fire Retardant In Streams With Limited Data, Chris R. Rehmann, P. Ryan Jackson, Holly J. Puglis Aug 2021

Predicting The Spatiotemporal Exposure Of Aquatic Species To Intrusions Of Fire Retardant In Streams With Limited Data, Chris R. Rehmann, P. Ryan Jackson, Holly J. Puglis

Civil, Construction and Environmental Engineering Publications

Because fire retardant can enter streams and harm aquatic species including endangered fish, agencies such as the U.S. Forest Service (USFS) must estimate the downstream extent of toxic effects every time fire retardant enters streams (denoted as an “intrusion”). A challenge in estimating the length of stream affected by the intrusion and the exposure time of species in the affected reach is the lack of data typically available on the stream's geometry and flow characteristics. Previously, the USFS estimated the affected reach length assuming instantaneous mixing of the retardant over the reach; however, this approach neglects key river ...


Motivation Dynamics For Autonomous Composition Of Navigation Tasks, Paul B. Reverdy, Vasileios Vasilopoulos, Daniel E. Koditschek Aug 2021

Motivation Dynamics For Autonomous Composition Of Navigation Tasks, Paul B. Reverdy, Vasileios Vasilopoulos, Daniel E. Koditschek

Departmental Papers (ESE)

We physically demonstrate a reactive sensorimotor architecture for mobile robots whose behaviors are generated by motivation dynamics. Motivation dynamics uses a continuous dynamical system to reactively compose low-level control vector fields using valuation functions which capture the potentially competing influences of external stimuli relative to the system's own internal state. We show that motivation dynamics 1) naturally accommodates external stimuli through standard signal processing tools, and 2) can effectively encode a repetitive higher-level task by composing several low-level controllers to achieve a limit cycle in which the robot repeatedly navigates towards two alternatively valuable goal locations in a commensurately ...


Towards Smallholder Food And Water Security: Climate Variability In The Context Of Multiple Livelihood Hazards In Nicaragua, Christopher M. Bacon, William A. Sundstrom, Iris Stewart-Frey, Edwin P. Maurer, Lisa C. Kelley Jul 2021

Towards Smallholder Food And Water Security: Climate Variability In The Context Of Multiple Livelihood Hazards In Nicaragua, Christopher M. Bacon, William A. Sundstrom, Iris Stewart-Frey, Edwin P. Maurer, Lisa C. Kelley

Environmental Studies and Sciences

Climate variability and change affect both food and water security, as do other hazards, such as shifting food prices, plant pathogens, and political economic changes. Although household food and water insecurity affect billions, most studies analyze them separately. This article develops a relational approach to explaining household access to food and water in a multi-hazard context. We identify pathways linking hazards to livelihood vulnerability and assess the relative importance of climate-related hazards. Analyzing longitudinal data collected from two surveys of the same 311 smallholder households in northern Nicaragua, conducted in 2014 and again in 2017, we find that peak seasons ...


Dynamic Planning Networks, Norman Tasfi, Miriam A M Capretz Jul 2021

Dynamic Planning Networks, Norman Tasfi, Miriam A M Capretz

Electrical and Computer Engineering Publications

We introduce Dynamic Planning Networks (DPN), a novel architecture for deep reinforcement learning, that combines model-based and model-free aspects for online planning. Our architecture learns to dynamically construct plans using a learned state-transition model by selecting and traversing between simulated states and actions to maximize information before acting. DPN learns to efficiently form plans by expanding a single action conditional state transition at a time instead of exhaustively evaluating each action, reducing the number of state-transitions used during planning. We observe emergent planning patterns in our agent, including classical search methods such as breadth-first and depth-first search. DPN shows improved ...


Stream Sediment Monitoring In Morehead Kentucky, Kristopher Krolikowski, Jen O'Keefe Jul 2021

Stream Sediment Monitoring In Morehead Kentucky, Kristopher Krolikowski, Jen O'Keefe

2021 Celebration of Student Scholarship - Oral Presentations

Sediment loads in stream systems play a big role in how overall runoff behaves. Streams naturally transport sediment at various ratios depending on precipitation. When vegetation is removed in upstream environments, sediment loads on streams increase. Sudden increases of sediments in streams can cause many issues, such as flooding or stream re-direction. In Morehead, KY, large-scale logging operations on the ridge above Knapp Avenue and on the ridge above the north end of Allen Avenue have caused increased sediment load in a small stream called Oxley Branch. This stream flows south parallel to Knapp Avenue and along the eastern property ...


Mitigate Or Adapt?, Graham T. Reader Jun 2021

Mitigate Or Adapt?, Graham T. Reader

Thriving Through Climate Change and Pandemic 2021

Any changes in climate prior to the 19th century are attributed to natural causes, largely due to external factors. However, since 1992 such natural climate changes have been defined as climate variabilities by the United Nations Framework Convention on Climate Change (UNFCCC). Modern changes in climate, using the same framework, are presumed to be caused by human activities, especially from the emissions of Greenhouse Gases (GHG) generated from the combustion of fossil fuels. Subsequently, instead of humans finding ways to adapt to changes in climate by such measures as migration, precipitation harvesting, flood prevention, and irrigation, mitigation has become the ...


Potential Effects Of Single Use Plastics Ban On Ontario Manufacturers, Faranak Sadeghitabar, Beth-Anne Schuelke-Leech Jun 2021

Potential Effects Of Single Use Plastics Ban On Ontario Manufacturers, Faranak Sadeghitabar, Beth-Anne Schuelke-Leech

Thriving Through Climate Change and Pandemic 2021

During the past few decades, plastics pollution has become a global concern. Governments are striving to find the best way to reduce plastics consumption and waste. The Government of Canada has proposed a ban on single-use plastics to be implemented in 2021, a potentially disruptive public policy. Many studies have been conducted on the environmental impacts of plastics and the benefits of a plastics ban, but little has been written about the potential effects of these policies on plastics manufacturers. An economic model was developed to analyze the effects on Ontario single use plastics manufacturers. Results of the model show ...


On-Chip Nanoscale Plasmonic Optical Modulators, Abdalrahman Mohamed Nader Abdelhamid Jun 2021

On-Chip Nanoscale Plasmonic Optical Modulators, Abdalrahman Mohamed Nader Abdelhamid

Theses and Dissertations

In this thesis work, techniques for downsizing Optical modulators to nanoscale for the purpose of utilization in on chip communication and sensing applications are explored. Nanoscale optical interconnects can solve the electronics speed limiting transmission lines, in addition to decrease the electronic chips heat dissipation. A major obstacle in the path of achieving this goal is to build optical modulators, which transforms data from the electrical form to the optical form, in a size comparable to the size of the electronics components, while also having low insertion loss, high extinction ratio and bandwidth. Also, lap-on-chip applications used for fast diagnostics ...


Stock Market Manipulation Detection Using Continuous Wavelet Transform & Machine Learning Classification, Sarah Youssef Jun 2021

Stock Market Manipulation Detection Using Continuous Wavelet Transform & Machine Learning Classification, Sarah Youssef

Theses and Dissertations

Stock market manipulation detection is important for both investors and regulators. Being able to detect stock manipulation and preventing it gives investors the confidence in the market fairness and integrity. It also helps maintaining liquidity of the stocks and market efficiency. Implementing data mining algorithms in manipulation detection is a relatively recent technique but in the past few years there has been an increasing interest in it's applications in this domain. The benefit of monitoring manipulative trade behavior is that it can be implemented on live feed of stock data, which saves a lot of time in detecting stock ...


Integrated Mixing Machine For Sulfur Concrete Production, Maisa El Gamal, Khaled El-Sawy, Abdel-Mohsen O. Mohamed Jun 2021

Integrated Mixing Machine For Sulfur Concrete Production, Maisa El Gamal, Khaled El-Sawy, Abdel-Mohsen O. Mohamed

All Works

The production of sulfur concrete (SC) from its ingredient materials requires controlled heating and mixing conditions at a temperature level of 130°-150 °C. Although this process considered to be common and applicable at the industrial level, it is difficult at the laboratory/research level. This paper presents the design and manufacturing details of a relatively inexpensive laboratory machine for heating and mixing sulfur concrete. The different components of the machine are described in detail to help researchers to produce high-quality sulfur concrete. In this work, the quality of the machine is verified through experimental testing of the physical and ...


Waste To Phosphorus: A Transdisciplinary Solution To P Recovery From Wastewater Based On The Triz Approach, Anna Jama-Rodzeńska, Andrzej Białowiec, Jacek A. Koziel, Józef Sowiński Jun 2021

Waste To Phosphorus: A Transdisciplinary Solution To P Recovery From Wastewater Based On The Triz Approach, Anna Jama-Rodzeńska, Andrzej Białowiec, Jacek A. Koziel, Józef Sowiński

Agricultural and Biosystems Engineering Publications

Phosphorus (P) is a limited yet essential resource. P cannot be replaced, but it can be recovered from waste. We proposed the TRIZ approach (Teoria reszenija izobretatielskich zadacz - Rus., Theory of Inventive Problem Solving - Eng.) to identify a feasible solution. We aimed at minimizing the environmental impact and, by eliminating contradictions, proposed viable technical solutions. P recovery can be more sustainable based on circular economy and 4Rs (reduction, recovery, reuse, and recycling). The TRIZ approach identified sewage sludge (SS) as waste with a large potential for P recovery (up to 90%). Successful selection and application of SS management and P ...


Dependencyvis: Helping Developers Visualize Software Dependency Information, Nathan Lui Jun 2021

Dependencyvis: Helping Developers Visualize Software Dependency Information, Nathan Lui

Master's Theses

The use of dependencies have been increasing in popularity over the past decade, especially as package managers such as JavaScript's npm has made getting these packages a simple command to run. However, while incidents such as the left-pad incident has increased awareness of how vulnerable relying on these packages are, there is still some work to be done when it comes to getting developers to take the extra research step to determine if a package is up to standards. Finding metrics of different packages and comparing them is always a difficult and time consuming task, especially since potential vulnerabilities ...


Characterization Of Time-Variant And Time-Invariant Assessment Of Suicidality On Reddit Using C-Ssrs, Manas Gaur, Vamsi Aribandi, Amanuel Alambo, Ugur Kursuncu, Krishnaprasad Thirunarayan, Jonathan Beich, Jyotishman Pathak, Amit Sheth May 2021

Characterization Of Time-Variant And Time-Invariant Assessment Of Suicidality On Reddit Using C-Ssrs, Manas Gaur, Vamsi Aribandi, Amanuel Alambo, Ugur Kursuncu, Krishnaprasad Thirunarayan, Jonathan Beich, Jyotishman Pathak, Amit Sheth

Publications

Suicide is the 10th leading cause of death in the U.S (1999-2019). However, predicting when someone will attempt suicide has been nearly impossible. In the modern world, many individuals suffering from mental illness seek emotional support and advice on well-known and easily-accessible social media platforms such as Reddit. While prior artificial intelligence research has demonstrated the ability to extract valuable information from social media on suicidal thoughts and behaviors, these efforts have not considered both severity and temporality of risk. The insights made possible by access to such data have enormous clinical potential - most dramatically envisioned as a trigger ...


Using An Integrative Machine Learning Approach To Study Microrna Regulation Networks In Pancreatic Cancer Progression, Roland Madadjim May 2021

Using An Integrative Machine Learning Approach To Study Microrna Regulation Networks In Pancreatic Cancer Progression, Roland Madadjim

Computer Science and Engineering: Theses, Dissertations, and Student Research

With advances in genomic discovery tools, recent biomedical research has produced a massive amount of genomic data on post-transcriptional regulations related to various transcript factors, microRNAs, lncRNAs, epigenetic modifications, and genetic variations. In this direction, the field of gene regulation network inference is created and aims to understand the interactome regulations between these molecules (e.g., gene-gene, miRNA-gene) that take place to build models able to capture behavioral changes in biological systems. A question of interest arises in integrating such molecules to build a network while treating each specie in its uniqueness. Given the dynamic changes of interactome in chaotic ...


Optimizing Biomaterials For Ipsc-Derived Engineered Heart Tissue Models, Huanzhu Jiang May 2021

Optimizing Biomaterials For Ipsc-Derived Engineered Heart Tissue Models, Huanzhu Jiang

Engineering and Applied Science Theses & Dissertations

Hypertrophic Cardiomyopathy (HCM) is the most common inherited cardiovascular disease, where environmental forces and genetic mutations have been heavily linked to heart failure or sudden cardiac death in young people. However, how genetic mutations and environmental forces contribute to HCM phenotype are not well defined. To study the mechanisms and investigate the potential treatments of this disease, it is important to build a model to simulate mechanical loading and recreate micro-environment of cardiomyocytes. In vivo, surgical maneuvers like transaortic constriction allow the study of overload, but these approaches are low throughput and it is difficult to precisely control overload. In ...


Data-Driven Approaches To Solve Inverse Problems, Peijie Qiu May 2021

Data-Driven Approaches To Solve Inverse Problems, Peijie Qiu

Engineering and Applied Science Theses & Dissertations

The main purpose of this thesis is to discuss data-driven approaches to solve inverse problems in image reconstruction. In the Bayesian framework, the image prior serves as a regularizer in the computation of a maximum-a-posterior estimation of the reconstructed image. Classical image priors include Gaussian random space(e.g. Tikhonov regularization) or Besov prior (e.g. Total Variation regularization). Inspired by generative adversarial networks, a critic (discriminator) can serve as a regularizer, because of its capability of distinguishing the distribution of the ground-truth images from the distribution of the naively reconstructed images with classical regularization functional. Another data-driven approach, regularization ...


Bimetallic Catalyst For Lignin Depolymerization, Qishen Lyu May 2021

Bimetallic Catalyst For Lignin Depolymerization, Qishen Lyu

Engineering and Applied Science Theses & Dissertations

This thesis is motivated by concerns regarding the need to develop more sustainable and economic technologies to meet rising global manufacturing and energy demands. These concerns have renewed governmental, industrial, and societal determination to reduce the world’s dependence on conventional natural resources and has led to considerable research on producing fuels and chemicals from feedstocks other than petroleum. Lignocellulosic biomass represents an abundant and renewable resource that could displace petroleum feedstock producing biofuels and multiple valuable chemical products with reduced greenhouse gas emissions. Lignin is the second abundant biopolymer source in nature and is found almost everywhere. Since the ...


Flying Wing Uav For Surveillance And Object Tracking, Kristen Padgett, Scott Semmelink, Jared Lasley, Paul Horne May 2021

Flying Wing Uav For Surveillance And Object Tracking, Kristen Padgett, Scott Semmelink, Jared Lasley, Paul Horne

Senior Design Project For Engineers

Unmanned aerial vehicles (UAV) have become ubiquitous in recent years due to their adaptability and ease of use. Surveillance UAVs in particular have seen increased interest and usage by law enforcement, civilian security, surveying, and federal services. The increased interest has led to the development of UAVs with increased endurance and payload capacity. Further as many of the applications of surveillance drones involve heightened security requirements, an aircraft of domestic make is preferential to many organizations. With this demand in mind, Inspired Products, LLC put forth a request for assistance in the design and testing of a surveillance UAV. More ...


Effect Of Galvanic Corrosion On Crack Propagation Of Cold Expanded Holes In Aa2024-T3, Ken Shishino May 2021

Effect Of Galvanic Corrosion On Crack Propagation Of Cold Expanded Holes In Aa2024-T3, Ken Shishino

PhD Dissertations and Master's Theses

A search for the balance between weight reduction and durability of a structure has always been a popular topic within the aerospace industry. Among numerous researches to improve a structure’s fatigue life, processes on mechanically fastened joints have been a topic of focus as it is naturally a discontinuity in the material leading to a local stress concentration under loading. Cold expansion is a well-known technique with a wide range of applications in both new and repaired structures. The benefits include the extension of fatigue life and a delay in crack growth without addition of weight. However, localized galvanic ...


International Analysis On The Traffic Impact Of The Covid-19 Pandemic, Fanny Margaretha Kristiansson May 2021

International Analysis On The Traffic Impact Of The Covid-19 Pandemic, Fanny Margaretha Kristiansson

PhD Dissertations and Master's Theses

The purpose of this research was to assess, compare, and contrast the impact of COVID-19 activity restrictions on road-based transportation activity in regions of the US, Sweden, and China from January 1st to December 31st, 2020. Roadway traffic volumes were used to relate the progression of reported COVID-19 cases and government directives for social separation in three countries with diverse governmental responses.

Among the contributions of this paper was the illustration of the timeline and level of public responses to closures, lockdowns, and reopening as represented through rapid traffic decreases and increases. Traffic was greatly impacted, showing that the pandemic ...