Engineering Commons^™

Exergetic Analysis Of A Cogeneration System For Cooling And Heating, Alexandru Serban, Mariana-Florentina Stefanescu, Liviu Drughean, Gabriel Nastase, Mihaela Ciocan, Sorin Bucsa, Alexandru Dobrovicescu

UBT International Conference

The paper deals with a heat pump system for the food industry characterized by two products - refrigeration and heating. The working fluid is ammonia, an ecological refrigerant harmless for the environment. For every apparatus, corresponding to its utility and operating field, the exergetic balance states the “product” and “fuel”. The work analyses the conduct of the system at the variation of the operating and constructive parameters. The exergoeconomic technique succeeds in pointing out for every dissipative zone the exergy destruction and losses.

An Aplication Of Mcda Method To Evaluate And Select The Most Suitable Landfill Sites For Urban Waste. A Project Case Study For Berat County. Albania, Robert Kosova, Fabiana Cullhaj, Teuta Thanasi, Arben Reka, Taulant Kullolli, Gjergji Thanasi

UBT International Conference

Waste management system needs clear and strict management policy. They also need a process of evaluating and selecting the most appropriate landfill sites that respect the restrictions and constraints dictated by the presence of the population in that area, with respect to ecological ecosystems and other factors. In addition to the geographical and geological criteria and other specifications that are defined by traditional selection procedures, there are new factors adding to the old constraints and limitations. Urban waste is produced in large quantities in our cities, every year. As a result, the number of sites should increase with the population …

Fpga Multi-Core Processors Power Consumption: Soft- Core Vs. Hard-Core, Marsida Ibro, Gerti Kallbaqi

UBT International Conference

Actually multi-core processors designs are limited in power consumption and performance. Consequently, it is not possible to optimize further the performance without increasing power consumption. The main challenge in multi-core processors is the fact that they have heterogeneous hardware components. This article will study different technologies for implementing multi-core processors in FPGA devices. The minimum requirement to ensure low power consumption is parallelism. The purpose of this study is to highlight the latest methodologies used in terms of environment, clock signal, testing, flexibility, cost, availability and power consumption.

Emission Reduction Opportunities Of Coal-Fired Steam Generator, Marigona Krasniqi, Risto Filkoski

UBT International Conference

Energy and its production today has become one of the most controversial topics. Power plants around the world produce energy with different sources, but so far there is no energy source that can make competition with coal for many years and for many reasons. Even though power plants with this kind of fuel have their own advantages, the biggest drawbacks are the release of hazardous and toxic substances. These emission components negatively affect the environment and for this reason in many countries of the world, are described the limits of the emitting rate. For this purpose, in this paper there …

Does An(Y) Order Exist Within The Structural Art, Feti Selmani

UBT International Conference

Many authors have treated the beauty and aesthetics from the social and phylosofic point of view [Kant, Plato], whereas very few of them have meditated within the domain of Architecture let alone Structural Engineering [Leonhardt]. The Beautiful is beautiful, and the Ugly is ugly, but subjectivity apart, is any mean of defining a way or some Principles which can be of Guide for the designer. Is there any mathematics within the beauty, i.e., can the beauty be described in a mathematical way. It is a simple, yet a very difficult question answering, since both the beauty and aesthetics falls into …

Rehabilitation Of Early-Age Precast Concrete Structures: A Feasibility Study On An Industrial Complex Progressively Built In 1940s-1970s In Northern Italy, Bruno Del Lago, Eugenio Berretta, Visar Krelani, Luisa Galetto

UBT International Conference

Precast concrete industrial buildings have been widely spreading over the Italian territory mostly devoted to industrial development after WWII. The pioneering structures built in the early decades of this period have been designed with criteria which are now obsolete and with lower static actions with respect to the actual standards, moreover disregarding any conception of seismic or fire resistance. As such, they are a potential source of strong vulnerability. With reference to a large industrial complex located in Brianza (Northern Italy) built with successive expansions from the ‘40s to the ‘70s, the structural performance indexes associated to static, seismic and …

Combining Cryptographic Primitives According To Security Metrics And Vulnerabilities In Real Systems, Blerina Çeliku, Rafail Prodani, Emis Simo

UBT International Conference

There are so many applications and data that flow during our daily activities, either personal or institutional ones. Also the companies and business do transactions or their real operations through the Web and other Internet facilities. Security breaches are costing individuals or companies millions so information security has to be a major priority. There are several forms of security technology available, but encryption is one that everyday computer users should know about. Encryption and the performance of cryptographic algorithms are variable according to implemented platforms, software and hardware components or application scenarios. According to specific security metrics and requirements we …

Technology Mediated Nudging In A Mobile Health Context, My Zetterholm, Päivi Jokela, Lina Nilsson

UBT International Conference

According to a vision for eHealth that was launched in 2016 by the Swedish Government, Sweden will be leading the way in using the potential of digitalization and eHealth to help people achieve a good and equal health. To achieve this vision, we argue that initiatives in eHealth need to augment the traditional health perspective. This implies a more preventive approach that transforms the health concept to a continuous participative process over the life course. A stronger emphasis is needed to develop high quality mobile and web based systems in order to empower people to pursue a healthy lifestyle. A …

Dynamics Of Improvement Of Some Physico-Chemical Parameters In Lumbardhi River Of Prizren From Urban Water Discharges For The Year 2018 Compared To The Year 2017, Sami Gashi, Besa Beseli, Petrit Drini

UBT International Conference

The rapid growth of our city Prizren and urban problems, especially those of sewage, resulted in the pollution of the Lumbardhi River, since urban wastewater was not treated in advance until the year 2017, therefore in 2018 the collectors were built aimed at mitigating river pollution. Therefore, the purpose of the paper is to compare and evaluate some basic physico - chemical pollution indicators without treatment of urban waste water in 2017 with those treated with collectors of the year 2018. The physico - chemical parameters to be treated are: Content of Dissolved Solid Substances in Water (DSS) that limits …

Teaching Cybersecurity In An Undergraduate Engineering Course, Xiuli Qu, Xiaohong Yuan

KSU Proceedings on Cybersecurity Education, Research and Practice

Organizations create a huge amount of sensitive and confidential data, which must be protected from unauthorized access or disclosure. Nowadays, most organizations store their business data in digital formats. With the increasing use of digital data, data breaches are more often and serious in recent years. Therefore, it is very important for next-generation engineers to be aware of the importance of information security, and be able to recognize vulnerabilities and threats to an information system and design user-friendly and effective security measures. To achieve it, two modules of information systems security, including lectures and in-class labs, were developed and taught …

Study Of Physical Layer Security And Teaching Methods In Wireless Communications, Zhijian Xie, Christopher Horne

KSU Proceedings on Cybersecurity Education, Research and Practice

In most wireless channels, the signals propagate in all directions. For the communication between Alice and Bob, an Eavesdropper can receive the signals from both Alice and Bob as far as the Eavesdropper is in the range determined by the transmitting power. Through phased array antenna with beam tracking circuits or cooperative iteration, the signals are confined near the straight line connecting the positions of Alice and Bob, so it will largely reduce the valid placement of an Eavesdropper. Sometimes, this reduction can be prohibitive for Eavesdropper to wiretap the channel since the reduced space can be readily protected. Two …

A Mathematical Remodeling For Crop Portfolio Selection Under Limited Irrigation Resource, Li Zhang

S.C. Water Resources Conference

A mathematical model and optimization framework to aid farmers in selecting crop portfolios were proposed and discussed in (Bokhira et al. 2014; Chrispell et al. 2012). In this paper, we propose a refined mathematical model which reduces the number of constraints by nearly half while the number of decision variables is about the same. Also, the proposed model is easier to implement and maintain due to its generalized structure, and it provides more flexibility for us to expand the problem. Some key sensitive analysis is also provided.

Issues In Reproducible Simulation Research, Ben G. Fitzpatrick

Annual Symposium on Biomathematics and Ecology Education and Research

No abstract provided.

Julia Language Ephemeris And Physical Constants Reader For Solar System Bodies, Julia Mihaylov, Renee Spear

Undergraduate Research Symposium - Prescott

This presentation was the forerunner a second paper by the authors for the AAS/AIAA conference in January 2019, and is not available for download. For a description of the first presentation, see the authors' Discovery Day 2018 - Presentation.

Publicly released in 2012, the Julia language is a relatively new, open source dynamic language. One major benefit of Julia is its combined capabilities of both dynamic and static coding languages. It nearly matches the computational efficiency of static languages, such as FORTRAN or C, and exceeds that of dynamic languages, such as MATLAB or Python. Additionally, unlike Python, Julia …

Design Of A Heavy Lift Rc Aircraft - Society Of Automotive Engineers (Sae) Aero Design® West Competition Team, Jiyoung Hwang, Phillip Nielsen

Undergraduate Research Symposium - Prescott

The SAE Aero West design competition challenges undergraduate students to design and build an RC aircraft that will fly with the maximum number of passengers and luggage possible. The ERAU SAE team focuses on simulation-based research and project methods such as Computational Fluid Dynamics (CFD), aircraft optimization, and Finite Element Analysis (FEA). Designing and manufacturing a well-designed heavy lift aircraft and competing with other groups will give experience in solving engineering problems. The Aerodynamics team is currently focusing on score optimization, aircraft performance and configuration. The propulsion team is constructing a test rig to test various propellers and motors to …

Design Of A Thrust Stand For Low Power Electric Propulsion, John Norton

Undergraduate Research Symposium - Prescott

Electric propulsion (EP) has been gaining popularity due to the high efficiencies and specific impulse. These thrusters all follow the same general idea of converting stored electrical potential energy to kinetic energy for the craft; typically, this is accomplished by the acceleration of gas particles through three main methods, electrothermal, electromagnetic, and/or electrostatic. The specific impulse is the change of momentum per unit of propellant expended. While chemical propulsion produces a high change in momentum, they use much more propellant mass than an electric thruster. EP devices will typically produce very low thrust, which makes it difficult to measure thrust …

Fly This Sim! Basic Aircrew Training Device (Batd) Impact On Student Progression And Retention, Jordan Stephens

Undergraduate Research Symposium - Prescott

The researchers’ goal was to design a project implemented in Fall 2018 which studies the effect of using a Helicopter Basic Aircrew Training Device (BATD) on helicopter flight student progression and retention. Measuring the efficacy of the BATD will allow ERAU to determine the need for purchase of additional BATDs in the future. The design included the methodology and preparation of all of the materials required to undertake the Fall project. This included a student focus group design, student survey design, student progress tracker, BATD utilization tracker, data analysis plan, design and testing of the practical skills to be practiced …

Developing High Performance Grid Computing Systems On A Budget, Forrest Mobley

Undergraduate Research Symposium - Prescott

High performance grid computing systems are essential for today’s engineering and research projects, as they make certain impossibilities possible, and save time and money as well. However, these supercomputers can cost upwards of a hundred million dollars and require large amounts of space and energy to keep, making them all but inaccessible to small engineering firms and universities. As most of these institutions do not require the massive level of computing power offered by these large grid computers, small scale versions are often built, with various setups. The purpose of this project was to set up a new small scale …

Project Janus, Theodore J. Lilyeblade, Jacqueline Worley, Garrison Bybee

Undergraduate Research Symposium - Prescott

The development goal of Project Janus is to design, fabricate, and program two robotic heads that can serve as animatronic chatbots. Each robotic head will be equipped with two USB webcams, a mono speaker within the robot’s mouth, and a pair of microphones. Additionally, each robotic head will feature a three degree of freedom neck, a one degree-of-freedom jaw, and a two degree-of-freedom gimbal for the eyes upon which the cameras will be mounted. The robotic heads will be interfaced to separate internet connected personal computers. Through these computers, they will make use of online speech recognition tools, online chatbots, …

Eagle Aero Sport: Student-Built Aircraft, Rachael Bradshaw, Nick Bartholet

Undergraduate Research Symposium - Prescott

Eagle Aero Sport (EAS) is the first student operated aircraft build team at Embry-Riddle Aeronautical University. Our team allows students to gain hands-on experience in all aspects of aircraft production including: aircraft assembly, design engineering, management of production operations, finance, marketing, and team building skills. Through research, and consulting with the Experimental Aircraft Association, our airplane of choice is the Van’s RV-12. EAS is modifying the airplane to add real time flight test instrumentation for research. These instruments will gather data for aerodynamic, structural, as well as aircraft performance experiments. Presently, EAS is progressing with Build Team 60% complete and …

One Root, Many Trees: Reviving Collections Practices, Kevin Farley, Emily Davis Winthrop, Ibironke Lawal, Patricia Sobczak

Charleston Library Conference

Collections are undergoing intense change and pressure from technology, budgetary uncertainties, and emerging perspectives on future approaches. Our case study—drawn from our experiences as collections librarians—examines these complex issues facing academic collections, large or small, across the profession. Through the development of “collections of distinction” within the local collection, collaborations and scholarly partnerships with colleagues and faculty, and advocacy for the importance of dedicated oversight to ensure that collections investments fulfill the academic mission, we explore possible solutions to the complicated issues defining contemporary collections practices.

Full Proceedings, 2018, Jianshun Zhang

International Building Physics Conference 2018

Full conference proceedings for the 2018 International Building Physics Association Conference hosted at Syracuse University.

Tesselations And Percolations In Topologically Interlocked Stereotomic Material Systems, Andrew Williams, Thomas Siegmund

IUTAM Symposium Architectured Materials Mechanics

No abstract provided.

Emergent Wave Phenomena In Coupled Elastic Bars: From Extreme Attenuation To Realization Of Elastodynamic Switches, Qianli Chen, Ahmed Elbanna

IUTAM Symposium Architectured Materials Mechanics

No abstract provided.

Fiber Reorientation Behavior Of Bioinspired Bouligand Architectures With Functional Graded Fiber Orientation, Di Wang, Alireza Zaheri, Benjamin Russell, Pablo Zavattieri

IUTAM Symposium Architectured Materials Mechanics

No abstract provided.

Topologically Interlocked Material Systems: From A Material Design Concept To Properties, Thomas Siegmund

IUTAM Symposium Architectured Materials Mechanics

No abstract provided.

Extremal Material And Structure Design By Topology Optimization, Ole Sigmund, Jeroen Groen

IUTAM Symposium Architectured Materials Mechanics

No abstract provided.

Energy Harvesting In Phase Transforming Materials, Aman Thakkar, Nilesh Mankame, Pablo Zavattieri, Andres F.

IUTAM Symposium Architectured Materials Mechanics

No abstract provided.

Design And Performance Of Periodic Trusses, Frank Zok, Matthew Begley, Ryan Latture

IUTAM Symposium Architectured Materials Mechanics

No abstract provided.

Lattice Structures And Strength Optimization, Vince Vernacchio, Thomas Siegmund

IUTAM Symposium Architectured Materials Mechanics

No abstract provided.