Engineering Commons^™

Studim Preliminar Mbi Vetitë E Betonit Të Njomë, Qëndrim Kurrumeli

Theses and Dissertations

Kjo temë trajton betonin e njomë me konkretisht vetitë e betonit të njomë.Vetitë teknike të betonit duhet të plotësojnë kërkesat thelbësore të përgjithshme dhe specifike për qëllimin përfundimtar të betonit. Percaktimi i vetive të betonit të njomë është përgjegjësi e të gjithëve për ekzekutim të punëve nga betoni. Vetitë e caktuara të betonit të njomë, kur është e nëvojshme varësisht nga kushtet e ekzekutimit dhe të shfrytëzimit të konstruksionit nga betoni, përcaktohen në projektin e betonit.Betoni si material përbëhet nga komponentët (materialet): agregatit,çimentos,ujit, që përzihen nëraporte të caktuara, varësisht nga karakteristikat e tyre si dhe kërkesat e parashtruara nga projektuesi …

Analiza Dhe Dimensionimi I Pllakave Të Rrafshëta Pa Trarë, Pëllumb Halili

Theses and Dissertations

Pllakat pa traje janë pllakat e betonit që mbajn ngarkesa në të dy drejtimet e mbështetur drejtpërdrejt në shtylla betoni pa përdorimin e trarëve.

Pllakat pa traje janë me trashesi uniforme, me panele të lëshuara, me kapitele ose me kapitele dhe panele të lëshuara, te gjitha këto referohen si pllaka të rrafshta(sheshta). Sistemet e pllakave të rrafshta janë të njohura për përdorim në ndërtesa zyrash dhe banimi, spitale, shkolla dhe hotele. Ata janë të shpejta dhe të lehtë për të tu punuar dhe për tu ndërtuar. Mungesa e trajeve lejon lartësi më të ulëta dhe si rezultat kursim i kostove …

Organizimi I Punishtës, Vedat Jashanica

Theses and Dissertations

Kjo temë diskuton organizimin e punishteve dhe sqaron se cfarë duhet të kemi parasysh gjatë organizimit të një punishteje. Qellimi kryesorë i këtij studimi është të analizoj dhe vlerësoj menaxhimin dhe organizimin e punishteve në Kosovë. Si është gjendja e punishteve në Kosovë, cilat janë të metat dhe mangësitë. Ky studim tenton që të kontriboj në fushën e menaxhimit dhe organizimit të ndërtimit ashtu që të kuptohet më mirë vlera dhe rëndësia e saj, e cila lidhet në mënyrë direkte me sigurinë e jetës së njeriut, koston, kohën dhe cilësinë e ndërtimit. Në fund janë dhënë disa rekomandime për organizimin …

Materialet Polimere,Analiza Dhe Përdorimi Në Inxhinieri Ndërtimore, Dardan Ballata

Theses and Dissertations

Kjo temë shtjellon në mënyrë të përgjithshme materialet polimere si materiale bashkohore me fushë të gjërë të përdorimit. Materialet polimere janë zhvilluar hovshëm në dekadën e fundit në vende të ndryshme të botës, duke u përdorur në fusha të ndërtimit, prodhimtarisë serike si dhe në fushën e mjeksisë. Tema gjithashtu trajton klasifikimin i materialeve polimere, që mund të bëhet në baza të origjinës së prodhimit, natyrore si mëndafshi apo sintetike, si shtofet e ndryshme për përforcim. Në mënyrë që materialet polimere ti përdorim në mënyrë të drejtë atëher është e nevojshme që të studiohen së pari vetitë e tyre qofshin …

Organizimi I Punishtes Për Objektin Afaristo-Banesor B+P+5e, Florin Halili

Theses and Dissertations

Tema të cilën kemi përzgjedhur për punim diplome “ORGANIZIMI I PUNISHTES PËR OBJEKTIN AFARISTO-BANESOR B+P+5E” nga lënda Organizimi dhe Teknologjia e Ndërtimit, reflekton njohurit bazike mbi menaxhimin dhe organizimin e ndërtimit të objektit në fjalë. Me theks të veçantë duhet cekur se organizimi i ndërtimit në punishte ka një rol shumë të rëndësishëm për mbarëvajtjen e punimeve, duke pasur parasysh që në rastin tonë kemi të bëjmë me një objekt voluminoz, me shumë pozicione ndërtimi dhe nevojitet një organizim i mirëfilltë.

Duke u bazuar edhe në norma ndërkombëtare, organizimi i punëve në punishte është me rëndësi të veçantë, duke filluar …

Egzekutimi I Tretuarit Me Infrastruktur, Hysni Shabani

Theses and Dissertations

Kjo temë shpalosë egzekutimin e projektit në infrastrukturë rrugore në ndertimin e

tretuarit që është gjetur si shtresë e veqantë në qarkullimin dhe sigurinë e njerëzve

në kohën bashkohore, nevojitet të modifikohet dhe të adaptohet konform

materialeve moderne dhe prodhimtarisë, si dhe të përshtatet kushteve të lokacionit përkatës.

Orientimet aplikative në tretuaret aktuale na bëjnë që të thellohemi në këtë

drejtim duke analizuar të gjitha materialet ndertimore: germimi, ngjeshjet, mbushjet

agregati, betoni, dhe përzierja e masës të bazave dhe kubzimi, asfaltimi. Metodat që janë

përdorur gjatë kësaj pune janë të fokusuara në dy drejtime: metoda analitike (Teorike) dhe metoda e …

Shkaqet E Aksidenteve Dhe Lëndimeve Në Sektorin E Ndërtimit Në Kosovë, Faton Lakna

Theses and Dissertations

Republika e Kosovës gjatë luftës pati një shkatërrim mjaft të madh, e në veçanti në sektorin e ndërtimtarisë dhe infrastrukturës. Që nga ajo kohë, kërkesa për ndërtimin e njësive banesore dhe infrastrukturës rrugore ishte në rritje. Zhvillimi i sektorit të ndërtimit përveç tjerash, ndikoj edhe në rritjen e numrit të punësuarve në këtë sektor. Për shkak të përvojës jo të mjaftueshme në këtë fushë, pati edhe shumë të lënduar dhe raste me fatalitet në vendin e punës. Me formimin e institucioneve të Kosovës, fillimisht atyre të përkohshme, u miratuan edhe shume ligje e rregullore rreth për sigurisë dhe mbrojtjes në …

Medium Duty Gas-Turbine Engine Blade Removal Tool, Elliott James Greb, Jacob Thomas Syage, Kellen Thomas Field

Mechanical Engineering

Solar Turbines Incorporated sponsored a team of three Cal Poly Undergraduate Mechanical Engineering students to design, manufacture, prototype, and test a tool for the removal of turbine blades from their respective disk assembly without damaging the disk itself. The tool was developed for Solar’s industrial gas turbine engines. The tool complies with all OSHA and Solar Turbines safety and engineering constraints, and was designed for use in a shop facility. The tool was made adaptable for geometric variances in multiple turbine rotor disk stages, and requires no more than one technician to operate using a maximum of two shop resources. …

Hollow-Core Frp-Concrete-Steel Bridge Columns Under Torsional Loading, Sujith Anumolu, Omar I. Abdelkarim, Mohanad M. Abdulazeez, Ahmed Gheni, Mohamed Elgawady

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

This paper presents the behavior of hollow-core fiber-reinforced polymer-concrete-steel (HC-FCS) columns under cyclic torsional loading combined with constant axial load. The HC-FCS consists of an outer fiber-reinforced polymer (FRP) tube and an inner steel tube, with a concrete shell sandwiched between the two tubes. The FRP tube was stopped at the surface of the footing, and provided confinement to the concrete shell from the outer direction. The steel tube was embedded into the footing to a length of 1.8 times the diameter of the steel tube. The longitudinal and transversal reinforcements of the column were provided by the steel tube …

Application Of P300 Event-Related Potential In Brain-Computer Interface, Ali Raider, Reza Fazel-Rezai

Electrical Engineering Faculty Publications

The primary purpose of this chapter is to demonstrate one of the applications of P300 event-related potential (ERP), i.e., brain-computer interface (BCI). Researchers and students will find the chapter appealing with a preliminary description of P300 ERP. This chapter also appreciates the importance and advantages of noninvasive ERP technique. In noninvasive BCI, the P300 ERPs are extracted from brain electrical activities [electroencephalogram (EEG)] as a signature of the underlying electrophysiological mechanism of brain responses to the external or internal changes and events. As the chapter proceeds, topics are covered on more relevant scholarly works about challenges and new directions in …

Learning Curve Analysis Using Intensive Longitudinal And Cluster-Correlated Data, Xiao Zhong, Zeyi Sun, Haoyi Xiong, Neil Heffernan, Md Monirul Islam

Engineering Management and Systems Engineering Faculty Research & Creative Works

Intensive longitudinal and cluster-correlated data (ILCCD) can be generated in any situation where numerical or categorical characteristics of multiple individuals or study units are observed and measured at tens, hundreds, or thousands of occasions. The spacing of measurements in time for each individual can be regular or irregular, fixed or random, and the number of characteristics measured at each occasion may be few or many. Such data can also arise in situations involving continuous-time measurements of recurrent events. Generalized linear models (GLMs) are usually considered for the analysis of correlated non-normal data, while multivariate analysis of variance (MANOVA) is another …

In-Place Recycling And Reclamation Of Asphaltic Concrete Pavements In Kentucky, David Q. Hunsucker, David L. Allen, R. Clark Graves

Kentucky Transportation Center Research Report

Full-depth reclamation has been defined by the Asphalt Recycling and Reclaiming Association as a “rehabilitation technique in which the full thickness of the asphalt pavement and a predetermined portion of the underlying material (base, subbase, and/or subgrade) is uniformly pulverized, blended and compacted to provide an upgraded, homogeneous material resulting in a stabilized base course.” The Kentucky Transportation Cabinet has utilized the full-depth reclamation (FDR) process as a method to address asphalt pavements exhibiting widespread base failures. The FDR process transforms the existing hot mix asphalt (HMA) pavement and underlying granular materials into a stabilized base layer. The stabilized layer …

Curricula Of Atmae Accredited University Programs: Building A Composite, Mark Doggett

SEAS Faculty Publications

The 2017 ATMAE Accreditation Handbook Standard 5 states that each baccalaureate program/ option should meet minimum-maximum semester hour requirements in the foundational areas of general education, mathematics, physical (or life) sciences, management, technical, and electives. The specific credit hours required for each category has a specified range. This study attempted to answer the question of what courses typical ATMAE accredited university programs most frequently require. ATMAE accredits four-year manufacturing, industrial, construction, and information technology programs. To what extent are these accredited programs similar in content? Is there a representative convention of content for university courses?

The objectives of the research …

Hydrodynamic And Thermal Effects Of Sub-Critical Heating On Superhydrophobic Surfaces And Microchannels, Adam M. Cowley

Theses and Dissertations

This dissertation focuses on the effects of heating on superhydrophobic (SHPo) surfaces. The work is divided into two main categories: heat transfer without mass transfer and heat transfer in conjunction with mass transfer. Numerical methods are used to explore the prior while experimental methods are utilized for the latter. The numerical work explores convective heat transfer in SHPo parallel plate microchannels and is separated into two stand-alone chapters that have been published archivally. The first considers surfaces with a rib/cavity structure and the second considers surfaces patterned with a square lattice of square posts. Laminar, fully developed, steady flow with …

Weighting The Perceived Importance Of Minimising Economic, Social And Environmental/Cultural Risks In Flood Risk Management, Zeinab Bedri, John O'Sullivan, Mark Adamson

Conference papers

In 2006, the Office of Public Works (OPW) began the National Catchment-based Flood Risk Assessment and Management (CFRAM) Programme through a series of pilot studies. A Multi-Criteria Analysis (MCA) Framework was developed through the CFRAM pilot studies that integrated a range of objectives related to human health and society, the environment and cultural heritage and the economy into the core process of selecting suitable flood risk management measures for a given area or location, and then for prioritising national investments for different schemes and projects. In support of this MCA framework, UCD, was commissioned to undertake a collaborative study with …

Establishing The Key Pillars Of Innovation Required To Execute A Successful Bim Strategy Within A Construction Sme In Ireland, Barry Mcauley, Patrick Carroll

Conference papers

The recent resurgence of the Irish Construction Industry comes at a time of global transition towards an information revolution, with technology now playing a vital role within our post-recessionary society. BIM is now seen as a core technology at the forefront of this transformational change which can present Construction SMEs with opportunities to new financial ventures. If any SME organisation is to be successful with BIM adoption then innovation must be the starting point. The aim of this paper is to establish the enabling factors required for innovating a BIM strategy within a SME Construction Organisation. The methodology involved a …

A Comparative Investigation Of Industry, Academics' And Students' Perceptions On Essential Sustainability Knowledge, Competencies And Skills, Lloyd Scott

Conference papers

Design and construction educational programmes offered throughout the world play a vital role in sustainability education by producing professionals knowledgeable and competent in sustainable practices. It is extremely important to align the sustainability knowledge of the graduates to the industry expectations. This paper compares industry expectations about essential sustainability knowledge with both academics and students perceptions of requisite knowledge about sustainability. A three stage mixed research approach was adopted for the study. Essential sustainability knowledge expected from recent graduates was identified through literature review and surveys of architectural design and construction firms. Students enrolled in architecture and construction programmes were …

Accelerated Innovation Deployment (Aid) Demonstration: Kytc — Roundabout Installation Project In London, Kentucky, Jeff Jasper, Adam J. Kirk

Kentucky Transportation Center Research Report

This document serves as the final report on the construction and opening of the Roundabout Project in London, Kentucky (Kentucky Item Number 11‐904.1). This project (hereafter referred to as the London Roundabout) was constructed on the authority of the Kentucky Transportation Cabinet (KYTC), which received an Accelerated Innovation Deployment (AID) Demonstration grant of $1 million to offset project construction costs. The AID Demonstration program requires that award recipients submit a final report to the Federal Highway Administration (FHWA) within six months of project completion. The purpose of this report is to document the project delivery and construction processes, benefits, and …

Coaxing His Data From Mandli Pavement Scans, Eric R. Green, William Nicholas Staats, Erin Lammers-Staats, Teng Alex Wang

Kentucky Transportation Center Research Report

The Kentucky Transportation Cabinet (KYTC) Division of Planning’s Highway Information Systems (HIS) database provides geometric information about horizontal and vertical curves, but its accuracy is unknown. An updated method of pavement analysis collects data by scanning the pavement as a van equipped with Mandli software drives the area of interest. The scans provide detailed information that can be used to calculate roadway geometry characteristics (e.g., curve radius, cross slope/superelevation, and grade). This study evaluated the ability of the Mandli data to support curve advisory calculations and find a way to utilize Mandli data to improve the existing HIS database. To …

Anchoring And Stiffening Techniques For Portable Concrete Barriers, Surajkumar Bhakta

Department of Mechanical and Materials Engineering: Dissertations, Theses, and Student Research

Portable concrete barrier (PCB) systems are utilized on federal and state highways in circumstances such as placing adjacent to vertical drop-offs and in construction zones. PCB systems are most commonly used in a free-standing configuration, which are known to have relatively large deflections when impacted. Large deflections are undesirable when dealing with limited space. In order to allow PCBs to be used in space restricted locations, seven PCB anchoring and stiffening techniques were tested and evaluated as per Manual for Assessing Safety Hardware (MASH) testing standards. Results will allow the New Jersey Department of Transportation to update guidance for their …

Oct-Based Three Dimensional Modeling Of Stent Deployment, Pengfei Dong, David Prabhu, David L. Wilson, Hiram G. Bezerra, Linxia Gu

Department of Mechanical and Materials Engineering: Faculty Publications

Stent deployment has been widely used to treat narrowed coronary artery. Its acute outcome in terms of stent under expansion and malapposition depends on the extent and shape of calcifications. However, no clear understanding as to how to quantify or categorize the impact of calcification. We have conducted ex vivo stenting characterized by the optical coherence tomography (OCT). The goal of this work is to capture the ex vivo stent deployment and quantify the effect of calcium morphology on the stenting. A three dimensional model of calcified plaque was reconstructed from ex vivo OCT images. The crimping, balloon expansion and …

Modeling And Simulation Of Microgrid, Ahmad Alzahrani, Mehdi Ferdowsi, Pourya Shamsi, Cihan H. Dagli

Electrical and Computer Engineering Faculty Research & Creative Works

Complex computer systems and electric power grids share many properties of how they behave and how they are structured. A microgrid is a smaller electric grid that contains several homes, energy storage units, and distributed generators. The main idea behind microgrids is the ability to work even if the main grid is not supplying power. That is, the energy storage unit and distributed generation will supply power in that case, and if there is excess in power production from renewable energy sources, it will go to the energy storage unit. Therefore, the electric grid becomes decentralized in terms of control …

Solar Irradiance Forecasting Using Deep Neural Networks, Ahmad Alzahrani, Pourya Shamsi, Cihan H. Dagli, Mehdi Ferdowsi

Electrical and Computer Engineering Faculty Research & Creative Works

Predicting solar irradiance has been an important topic in renewable energy generation. Prediction improves the planning and operation of photovoltaic systems and yields many economic advantages for electric utilities. The irradiance can be predicted using statistical methods such as artificial neural networks (ANN), support vector machines (SVM), or autoregressive moving average (ARMA). However, they either lack accuracy because they cannot capture long-term dependency or cannot be used with big data because of the scalability. This paper presents a method to predict the solar irradiance using deep neural networks. Deep recurrent neural networks (DRNNs) add complexity to the model without specifying …

Secure Degrees Of Freedom For The Mimo Wire-Tap Channel With A Multi-Antenna Cooperative Jammer, Mohamed Nafea, Aylin Yener

Electrical and Computer Engineering Faculty Research & Creative Works

In this paper, a multiple antenna wire-tap channel in the presence of a multi-antenna cooperative jammer is studied. In particular, the secure degrees of freedom (s.d.o.f.) of this channel is established, with $N-{t}$ antennas at the transmitter, $N-{r}$ antennas at the legitimate receiver, and $N-{e}$ antennas at the eavesdropper, for all possible values of the number of antennas, $N-{c}$, at the cooperative jammer. In establishing the result, several different ranges of $N-{c}$ need to be considered separately. The lower and upper bounds for these ranges of $N-{c}$ are derived and are shown to be tight. The achievability techniques developed rely …

An Optical Interferometric Triaxial Displacement Sensor For Structural Health Monitoring: Characterization Of Sliding And Debonding For A Delamination Process, Chen Zhu, Yizheng Chen, Yiyang Zhuang, Yang Du, Rex E. Gerald Ii, Yan Tang, Jie Huang

Electrical and Computer Engineering Faculty Research & Creative Works

This paper presents an extrinsic Fabry-Perot interferometer-based optical fiber sensor (EFPI) for measuring three-dimensional (3D) displacements, including interfacial sliding and debonding during delamination. The idea employs three spatially arranged EFPIs as the sensing elements. In our sensor, the three EFPIs are formed by three endfaces of three optical fibers and their corresponding inclined mirrors. Two coincident roof-like metallic structures are used to support the three fibers and the three mirrors, respectively. Our sensor was calibrated and then used to monitor interfacial sliding and debonding between a long square brick of mortar and its support structure (i.e., a steel base plate) …

An Embeddable Optical Strain Gauge Based On A Buckled Beam, Yang Du, Yizheng Chen, Chen Zhu, Yiyang Zhuang, Jie Huang

Electrical and Computer Engineering Faculty Research & Creative Works

We report, for the first time, a low cost, compact, and novel mechanically designed extrinsic Fabry-Perot interferometer (EFPI)-based optical fiber sensor with a strain amplification mechanism for strain measurement. The fundamental design principle includes a buckled beam with a coated gold layer, mounted on two grips. A Fabry-Perot cavity is produced between the buckled beam and the endface of a single mode fiber (SMF). A ceramic ferrule is applied for supporting and orienting the SMF. The principal sensor elements are packaged and protected by two designed metal shells. The midpoint of the buckled beam will experience a deflection vertically when …

Robotic Resistance Treadmill Training Improves Locomotor Function In Children With Cerebral Palsy: A Randomized Controlled Pilot Study, Ming Wu, Janis Kim, Deborah J. Gaebler-Spira, Brian D. Schmit, Pooja Arora

Biomedical Engineering Faculty Research and Publications

Objective

To determine whether applying controlled resistance forces to the legs during the swing phase of gait may improve the efficacy of treadmill training as compared with applying controlled assistance forces in children with cerebral palsy (CP).

Design

Randomized controlled study.

Setting

Research unit of a rehabilitation hospital.

Participants

Children with spastic CP (N=23; mean age, 10.6y; range, 6–14y; Gross Motor Function Classification System levels, I–IV).

Interventions

Participants were randomly assigned to receive controlled assistance (n=11) or resistance (n=12) loads applied to the legs at the ankle. Participants underwent robotic treadmill training 3 times a week for 6 weeks (18 …

Sagittal Subtalar And Talocrural Joint Assessment During Ambulation With Controlled Ankle Movement (Cam) Boots, Ben Mchenry, Emily L. Exten, Janelle A. Cross, Karen M. Kruger, Brian Law, Jessica M. Fritz, Gerald F. Harris

Biomedical Engineering Faculty Research and Publications

Background: The purpose of the current study was to determine sagittal plane talocrural and subtalar kinematic differences between barefoot and controlled ankle movement (CAM) boot walking. This study used fluoroscopic images to determine talar motion relative to tibia and calcaneal motion relative to talus.

Methods: Fourteen male subjects (mean age 24.1 ± 3.5 years) screened for normal gait were tested. A fluoroscopy unit was used to collect images at 200 Hz during stance. Sagittal motion of the talocrural and subtalar joints were analyzed barefoot and within short and tall CAM boots.

Results: Barefoot talocrural mean maximum plantar and dorsiflexion were …

Design The Capacity Of Onsite Generation System With Renewable Sources For Manufacturing Plant, Xiao Zhong, Md Monirul Islam, Haoyi Xiong, Zeyi Sun

Computer Science Faculty Research & Creative Works

The utilization of onsite generation system with renewable sources in manufacturing plants plays a critical role in improving the resilience, enhancing the sustainability, and bettering the cost effectiveness for manufacturers. When designing the capacity of onsite generation system, the manufacturing energy load needs to be met and the cost for building and operating such onsite system with renewable sources are two critical factors need to be carefully quantified. Due to the randomness of machine failures and the variation of local weather, it is challenging to determine the energy load and onsite generation supply at different time periods. In this paper, …

Chaotic Behavior In High-Gain Interleaved Dc-Dc Converters, Ahmad Alzahrani, Pourya Shamsi, Mehdi Ferdowsi, Cihan H. Dagli

Electrical and Computer Engineering Faculty Research & Creative Works

In this paper, chaotic behavior in high gain dc-dc converters with current mode control is explored. The dc-dc converters exhibit some chaotic behavior because they contain switches. Moreover, in power electronics (circuits with more passive elements), the dynamics become rich in nonlinearity and become difficult to capture with linear analytical models. Therefore, studying modeling approaches and analysis methods is required. Most of the high-gain dc-dc boost converters cannot be controlled with only voltage mode control due to the presence of right half plane zero that narrows down the stability region. Therefore, the need of current mode control is necessary to …