Engineering Commons^™

Analiza E Projektit Te Kanalizimi Fekal Fsh. Mirenë Lipjan Projektimi Dhe Veshtërsitë Gjatë Zbatimit, Milaim Qeriqi

Theses and Dissertations

Ne këtë punim të temës të diplomës kemi një studim të projektit të kanalizimit të projektuar për fshatin Mirenë. Në këtë punim të diplomës detyrë e tij është studimi i projektit në aspektit se sa janë respektuar standardet e projektimit. Në filmi është studiuar projekti ekzistues pastaj është bë krahasimi i standardeve të projektimit.Është bërë analiza e standartve të materialeve të përdorura nga aspekti sasi dhe cilësi. Dimensionimi është kontrolluar si është bë dhe a përmbush nevojat dhe normat teknike .Metodat e studimit të këtij projekti ka qenë literatura projekti i gatshëm për kanalizimin në Mirenë duke I krahasuar me …

Restaurimi I Linjës Hekurudhore Fushë Kosovë - Pejë, Granit D. Zogejani

Theses and Dissertations

Rigjallërimi i linjës hekurudhore Rehabilitimi i plotë i infrastrukturës ekzistuese të linjës hekurudhore dhe zëvendësimi me një strukturë të re me qëllim sigurimi të një infrastrukture afatgjatë dhe efikase. Në këtë temë do të shqyrtojmë mundësinë e përshkrimit të një ideje për përmirësimin e infrastrukturës hekurudhore nga Fushë Kosova deri në Pejë. Fillimisht do t’i paraqesim objektivat për këtë projekt e më pas do bëhet vizibiliteti apo përshkrimi i gjendjes aktuale të infrastrukturës hekurudhore si dhe analizat dhe matjet e elementeve të linjës, me theks të veçantë në shtresën e epërme. Objektivi përgjithshëm i këtij projekti apo analize teknike është …

Optimizimi I Përdorimit Të Hirit Në Beton, Butrint Gërguri

Theses and Dissertations

Kjo temë diskuton ndikimin e hirit në vetitë e betonit me qëllim që të optimizojë nivelin e hirit të përdorur për aplikim të caktuar. Sasia optimale e hirit ndryshon jo vetëm me llojin e aplikimit, por gjithashtu edhe me përbërjen dhe proporcionet e të gjitha materialeve në përzierjën e betonit (veçanërisht hiri), kushtet gjatë vendosjës (veçanërisht temperatura), praktikat e ndërtimit (p.sh. përfundimi dhe fortësimi) dhe kushtet e ekspozimit. Pra, përmbajtja optimale e hirit ndryshon prej rasti në rast. Përmbajtje të hirit deri në 50% mund të jetë I përshtatshëm shumicën e elementeve duke siguruar që kërkesat e projektit për aftësi …

Jitim Volume 25 Issue 3 - Front Page

Journal of International Technology and Information Management

JITIM volume 25, issue 3

Microfabrication For Polymer-Mems Micropumps: A Review, Kehang Cui

Manipal Journal of Science and Technology

The recent development of micropump with application in Biology and Chemistry is reviewed in this article. Instead of classifying micropump by actuation scheme, the biocompatibility and microfabrication issues for micropump are given special significance and used as new criteria for micro pump categorization. Among Polymer-based materials, Polydimethylsiloxane (PDMS) and Polymethylmethacrylate (PMMA) are the prevailing ones, are surveyed with reference to their biocompatibility and microfabrication technique, and followed by newly reported micropump respectively. Although new biocompatible material and its fabrication technique have brought substantial breakthroughs in micropump, they remain at the forefront and fertile research area in the future.

Preparation Of Nano-Size Ceramic Membrane From Industrial Waste, Shereen K. Amin, Mai H. Roushdy, Chakinaz Aly El-Sherbiny, Heba Mohamed Abdallah, Magdi F. Abadir

Chemical Engineering

Industrial ceramic wastes are becoming an increasing problem worldwide. Recently, this problem has attracted social concern due to the growing amounts of waste despite the measures and precautions that have been taken worldwide aiming at managing such wastes. One promising solution that has been recently researched consists incorporating such wastes in ceramic bodies which besides minimizing the waste load often improve the quality of the ceramic body. Roller kilns used in the production of ceramic tiles are routinely ground to remove traces of contamination. The fine ground powder is usually discarded as a useless waste. In the present paper, the …

Mos2 As A Co-Catalyst For Photocatalytic Hydrogen Production From Water, Bing Han, Yun Hang Hu

Michigan Tech Publications, Part 1

Solar-to-hydrogen conversion based on photocatalytic water splitting is a promising pathway for sustainable hydrogen production. The photocatalytic process requires highly active, inexpensive, and earth-abundant materials as photocatalysts. As a presentative layer-structured transition metal dichalcogenides, molybdenum disulfide (MoS2) is attracting intensive attention due to its unique electro and photo properties. In this article, we comprehensively review the recent research efforts of exploring MoS2 as a co-catalyst for photocatalytic hydrogen production from water, with emphasis on its combination with CdS, CdSe, graphene, carbon nitride, TiO2, and others. It is shown that MoS2–semiconductor composites are promising photocatalysts for hydrogen evolution from water under …

Chloride Contamination Remediation On Steel Bridges, Bobby W. Meade, Christopher Goff, Sudhir Palle, Theodore Hopwood Ii

Kentucky Transportation Center Research Report

Researchers evaluated 32 steel surface preparation methods to determine how effectively they remove chloride from corroded chloride-contaminated steel panels. Wet methods proved more effective than dry methods. The three most effective wet methods injected mineral slag abrasives in a water stream and resulted in less than 1% chlorides remaining. Most dry surface preparation methods left significantly more chloride contamination after surface preparation. The three most effective dry methods used multiple blast cleaning cycles. These methods approached the effectiveness of the best wet methods, with 1.6 to 2.0% chlorides remaining. The least effective surface preparation was a single abrasive blast cleaning …

Functional Mri In The Presence Of Repetitive, Sub-Concussive Impacts, Trey E. Shenk

Open Access Dissertations

Recent research has raised understanding and awareness of the long-term risks associated with mild traumatic brain injury (mTBI). While much research has focused on the role of concussion (a single event exhibiting clear clinical symptoms), the role of repetitive sub-concussive impacts is not well understood. This study uses functional MRI measurements of high school football players to identify functional changes, even in the absence of clinical symptoms.

Assessment Of Shear Prediction Models For Seismic Loss Estimation Of Concrete Buildings, Bashir Mohamed Ayman Al Murad

Civil and Environmental Theses

No abstract provided.

Wind Power: Frustrating Yet Inevitable, Garth Woodruff

Faculty Publications

No abstract provided.

Fuzzy Expert Systems: A More Human-Based Approach For Sensorial Evaluation Of Coffee-Bean Attributes To Derive Quality Scoring, Javier A. Livio

Theses and Dissertations

In the coffee industry, "cupping" is the process of sensorial evaluations of coffee beans, also known as Sample Evaluation. This process is done for three major reasons: to determine the actual sensory differences between coffee samples, to describe the flavors of the samples, and to determine preference of product. In totality, cupping targets the measurement of the coffee's quality related to fragrance, taste, and appearance which are expressed with a final numerical score. When cupping, the expert judge writes down the individual components' scores (fragrance, aftertaste, acidity, body, etc.) and ranks their intensities for reference. Despite the fact the cuppers …

Altered Antibiotic Tolerance In Anaerobic Digesters Acclimated To Triclosan Or Triclocarban, Daniel Elliott Carey, Patrick J. Mcnamara

Civil and Environmental Engineering Faculty Research and Publications

Bench-scale anaerobic digesters were amended to elevated steady-state concentrations of triclosan (850 mg/kg) and triclocarban (150 mg/kg) using a synthetic feed. After more than 9 solids retention time (SRT) values of acclimatization, biomass from each digester (and a control digester that received no antimicrobials) was used to assess the toxicity of three antibiotics. Methane production rate was measured as a surrogate for activity in microcosms that received doses of antibiotics ranging from no-antibiotic to inhibitory concentrations. Biomass amended with triclocarban was more sensitive to tetracycline compared to the control indicating synergistic inhibitory effects between this antibiotic and triclocarban. In contrast, …

Anaerobic Digester Bioaugmentation Influences Quasi Steady State Performance And Microbial Community, Kaushik Venkiteshwaran, K. Milferstedt, J. Hamelin, Daniel Zitomer

Civil and Environmental Engineering Faculty Research and Publications

Nine anaerobic digesters, each seeded with biomass from a different source, were operated identically and their quasi steady state function was compared. Subsequently, digesters were bioaugmented with a methanogenic culture previously shown to increase specific methanogenic activity. Before bioaugmentation, different seed biomass resulted in different quasi steady state function, with digesters clustering into three groups distinguished by methane (CH₄) production. Digesters with similar functional performance contained similar archaeal communities based on clustering of Illumina sequence data of the V4V5 region of the 16S rRNA gene. High CH₄ production correlated with neutral pH and high Methanosarcina abundance, whereas …

Benchmarking Approach For Empirical Comparison Of Pricing Models In Drms, Seif Azghandi, Kenneth M. Hopkinson, Kennard R. Laviers

Faculty Publications

emand response management systems often involve the use of pricing schemes to motivate the efficient use of electrical power. Achieving this efficiency requires the detection of electrical power patterns. The detection of these patterns normally involves use of non-linear, quasi-non-linear, and at times linear data pattern detection models. The behavioural disparities of these models and specifically when used for a specific set of data make it hard to select the most efficient model. The contribution of this study is devising an empirical benchmark (reference) ( perfect ) control pricing (PCP) model through which various models are compared in order to …

How Acoustics In California High Performance Schools Relate To Student Achievement, Devin K. Wong

Durham School of Architectural Engineering and Construction: Dissertations, Theses, and Student Research

This research project seeks to determine if students attending K–12 schools meeting a minimum standard of high performance classroom conditions in the state of California do evidence higher scholastic achievement, based on publically available results on state-wide standardized tests. In three phases, a subset of 200+ schools applying for grants dedicated to building high performance schools over the past decade was correlated with an existing database of achievement scores for all public schools in California. The criteria utilized to specify high performance classrooms was provided by the California High Performance Initiative (HPI) Grant program. Academic achievement was evaluated on a …

Abandoning Creativity: The Evolution Of Creative Ideas In Engineering Design Course Projects, Elizabeth Starkey, Christine Toh, Scarlett Miller

Interdisciplinary Informatics Faculty Publications

Creativity training has been widely integrated into engineering education as a means to prepare students to be an innovative force in design industry. However, much of this research has focused on training students to be creative idea generators, with limited attention to what happens after this generation. Thus, the current study was developed to understand how creative ideas are promoted or filtered throughout the design process in order to focus our educational efforts. In order to accomplish this, an 8-week study with 136 engineering students was conducted. Our results point to the reduction in creativity throughout the design process and …

Failure Mechanism Of Woven Roving Fabric/Vinyl Ester Composites In Freeze–Thaw Saline Environment, Elias Anis Toubia, Sadra Emami, Donald A. Klosterman

Civil and Environmental Engineering and Engineering Mechanics Faculty Publications

This experimental study investigates the degradation mechanisms of a glass fiber-reinforced plastic material commonly used in civil engineering applications. A substantial reduction in tensile, shear, and compression properties was observed after 100 days of freeze–thaw cycling in saline environment (-20°C to 20°C). Non-destructive inspection techniques were progressively conducted on unexposed (ambient condition) and exposed (conditioned) specimens. The dynamic mechanical analysis showed permanent decrease in storage modulus that was attributed to physical degradation of the polymer and/or fiber–matrix interface. This indicated the formation of internal cracks inside the exposed glass fiber-reinforced plastic laminate. The 3D X-ray tomography identified preferred damage sites …

Modeling Factors Contributing To Injury And Fatality Of Run-Off-Road Crashes In Ohio, Deogratias Eustace, Omar Eid Almutairi, Peter W. Hovey

Civil and Environmental Engineering and Engineering Mechanics Faculty Publications

The main objective of this study was to determine the factors that contribute significantly to the levels of injury severity when run-off-road (ROR) crashes occur. This study used a 5-year crash data for years 2008 - 2012 from the state of Ohio. The decision tree model in conjunction with generalized ordered logit model was used to investigate characteristics of injury and fatality of run-off-road crashes in Ohio.

The decision tree modeling was used for exploratory data analysis identified eight factors that explain a large amount of the variation in the response variable, injury severity. These predictor variables include road condition, …

Technology Trajectory Mapping Using Data Envelopment Analysis: The Ex-Ante Use Of Disruptive Innovation Theory On Flat Panel Technologies, Dong-Joon Lim, Timothy R. Anderson

Engineering and Technology Management Faculty Publications and Presentations

In this paper, we propose a technology trajectory mapping approach using Data Envelopment Analysis (DEA) that scrutinizes technology progress patterns from multidimensional perspectives. Literature reviews on technology trajectory mappings have revealed that it is imperative to identify key performance measures that can represent different value propositions and then apply them to the investigation of technology systems in order to capture indications of the future disruption. The proposed approach provides a flexibility not only to take multiple characteristics of technology systems into account but also to deal with various tradeoffs among technology attributes by imposing weight restrictions in the DEA model. …

Polarization Control By Using Anisotropic 3-D Chiral Structures, Menglin L.N. Chen, Li (Lijun) Jun Jiang, Wei E.I. Sha, Wallace C.H. Choy, Tatsuo Itoh

Electrical and Computer Engineering Faculty Research & Creative Works

Due to the mirror symmetry breaking, chiral structures show fantastic electromagnetic (EM) properties involving negative refraction, giant optical activity, circular dichroism and asymmetric transmission. Aligned electric and magnetic dipoles excited in chiral structures contribute to the extraordinary properties. However, the chiral structures that exhibit n -fold rotational symmetry show a limited tunability of the chirality. In this paper, we propose a compact, light, and highly tunable anisotropic chiral structure to overcome this limitation and realize a linear-to-circular polarization conversion. The anisotropy is due to simultaneous excitations of two different pairs of aligned electric and magnetic dipoles. The 3-D omega-shaped structure, …

Investigation Of Communication Constraints In Distributed Multi-Agent Systems, Zhaoyang Fu

Doctoral Dissertations and Master's Theses

Based on a simple flocking model with collision avoidance, a set of investigations of multi-agent system communication constraints have been conducted, including distributed estimation of global features, the influence of jamming, and communication performance optimization. In flocking control, it is necessary to achieve a common velocity among agents and maintain a safe distance between neighboring agents. The local information among agents is exchanged in a distributed fashion to help achieve velocity consensus. A distributed estimation algorithm was recently proposed to estimate the group’s global features based on achieving consensus among agents’ local estimations of such global features. To reduce the …

A Computer Program For The Coupled Implementation Of Meanline And Throughflow Methods To Simplify The Aerodynamic Design Of Multistage Axial Compressors, Alexander V. Rozendaal

Doctoral Dissertations and Master's Theses

A computer program capable of simplifying the preliminary aerodynamic design process of multistage axial compressors has been developed. This interactive design tool, named C-STAAC, combines the Meanline and Throughflow analysis capabilities of two independent compressor design codes to form one standalone system. The program greatly improves the efficiency of the Preliminary-to-Throughflow stages of compressor design by providing fully coupled interaction between the two platforms. The result enables the user to produce stacked airfoil geometry from only a handful of initial input parameters.

The program additionally offers a wide selection of pre- and post-processing capabilities that were not previously available with …

Flex-Ro: Design, Implementation, And Control Of Subassemblies For An Agricultural Robotic Platform, Jared Patrick Werner

Department of Agricultural and Biological Systems Engineering: Dissertations, Theses, and Student Research

Automation technology in agriculture is growing, making agricultural robotics viable. Innovative field usable multi-purpose robotic platforms are needed for the successful progression of agricultural robotics. Furthermore, the field of agricultural robotics would benefit from a robotic platform design allowing for variable height, thus accommodating navigation throughout various crop growth stages. A variable height machine, Flex-Ro was developed to accommodate this feature. Multiple sub-assemblies were designed and implemented for Flex-Ro. An electronic control unit (ECU) enabled engine was used to power Flex-Ro. An embedded application program was developed to control engine speed using proprietary Controller Area Network (CAN) messages in conjunction …

Amulet: An Energy-Efficient, Multi-Application Wearable Platform, Josiah Hester, Travis Peters, Tianlong Yun, Ronald Peterson, Joseph Skinner, Bhargav Golla, Kevin Storer, Steven Hearndon, Kevin Freeman, Sarah Lord, Ryan Halter, David Kotz, Jacob Sorber

Dartmouth Scholarship

Wearable technology enables a range of exciting new applications in health, commerce, and beyond. For many important applications, wearables must have battery life measured in weeks or months, not hours and days as in most current devices. Our vision of wearable platforms aims for long battery life but with the flexibility and security to support multiple applications. To achieve long battery life with a workload comprising apps from multiple developers, these platforms must have robust mechanisms for app isolation and developer tools for optimizing resource usage.\r\n\r\nWe introduce the Amulet Platform for constrained wearable devices, which includes an ultra-low-power hardware architecture …

Accident Rates, Phase Of Operations, And Injury Severity For Solo Students In Pursuit Of Private Pilot Certification (1994–2013), Douglas Boyd, Peter Dittmer

Publications

Flight training accidents constitute 14% of general aviation accidents. Herein we determined the rates, injury severity, and phase of flight for primary student solo accidents/incidents (mishaps) in Cessna 172 aircraft. Mishaps over the period spanning 1994–2013 were identified from the NTSB database. Student population data were from the FAA. Statistics employed proportion tests, Poisson distribution, and Mann-Whitney tests. Across the study period, 598 mishaps were identified. While the mishap rate increased nearly two-fold between 1994/1997 and 2002/ 2005, a 35% decline was evident thereafter. Nevertheless, no statistical difference in mishap rates was evident between the initial and current periods. Over …

Aes Encryption Algorithm Using Arm Trustzone Technology, Chia-Che Lee

Theses and Dissertations

With the huge impact of IoT devices, the security needs are becoming more important than what it had before. Since embedded systems have limited resources, the traditional security solutions are not quite fitting to IoTs because the huge power consumption and resource. ARM TrustZone Technology is a hardware based security feature using in ARM-based devices with minimum resource taken. TrustZone provides a critical environment to isolate security and non-security tasks within Normal and Security World. Both worlds can be a General Purpose Operating System (GPOS) or a Real-Time Operating System (RTOS) depending on designer has needs, and running simultaneously on …

Variable Rate Irrigation For Mining Undepleted Soil Water, Derek M. Heeren, Tsz Him Lo, Joe D. Luck, J. Burdette Barker, Derrel Martin, Luciano Mateos

Department of Agricultural and Biological Systems Engineering: Presentations and White Papers

Variable Rate Irrigation (VRI) offers the potential to improve irrigation efficiency by accounting for spatial variability in soil properties and water-holding capacity. This study explores the hypothesis that under conventional uniform irrigation, portions of fields with higher root zone available water capacity (R) often retain undepleted soil water. By developing prescription maps based on management allowable depletion (MAD), VRI can strategically “mine” this undepleted soil water, thereby reducing pumping requirements without negatively affecting crop performance.

Multiple tools for identifying spatial variability—including yield maps, digital elevation models, apparent electrical conductivity (ECa), soil sampling, remote sensing imagery, and cosmic ray probes—were evaluated …

Encouraging Development Of Mobile Applications As A Service To The Community, Vanessa Marie Forney

Master's Theses

The convenience of mobile applications combined with the efficiency and effectiveness provided by technology has contributed to an increased interest in mobile applications. Local groups and non-profit organizations often utilize outdated, manual processes and don’t have the resources or time to look into improving these systems. For Cal Poly students and other members of the community, this means there is an opportunity to apply technical skills and school projects to address these inefficiencies. This work explores whether a better system can be developed to provide the functionality of the existing system and enhance the experience of users through technology, data …

Experimental Investigation Of Co2 Transport Through Combined Membrane Absorber And Regenerator, Nima Mohammadrasool Atbaei

Chemical and Petroleum Engineering Theses

Greenhouse gases such as carbon dioxide have been known to contribute significantly to global warming, which in turn has resulted in serious global environmental problems. Carbon dioxide is the main gaseous contaminant in the atmosphere, representing about 80% of greenhouse gases. It is reported that industry and power plants using fossil fuels such as coal-combustion power generators produce half of the CO₂ emissions. These emissions create the need for low energy-consumption, and efficient technologies for the capture and removal of CO₂ from gas mixtures produced by industrial sources.

Conventional gas absorption processes for the removal of CO_{2 …}