bluuebunny/crossref_metadata_2025 huggingface dataset:
Fragility functions for performance-based ground failure due to soil liquefaction
Authors: Maurer Brett
Published: July 2018

The severity of liquefaction manifested at the ground surface is a pragmatic proxy of damage potential for various infrastructure assets, making it particularly useful for hazard mapping, land-use planning, and preliminary site-assessment. Towards this end, the recent Canterbury, New Zealand, earthquakes, in conjunction with others, have resulted in liquefaction case-history data of unprecedented quantity and quality, presenting a unique opportunity to rigorously develop fragility-functions for liquefaction-induced ground failure. Accordingly, this study analyzes nearly 10,000 liquefaction case studies from 23 global earthquakes to develop fragility functions for use in performance-based frameworks. The proposed functions express the probability of exceeding specific severities of liquefaction surface manifestation as a function of three different liquefaction damage measures (LDMs), wherein four alternative liquefaction-triggering models are used. These functions have the same functional form, such that end-users can easily select the model coefficients for the particular damage state, triggering model, and LDM of their choosing.It should be noted that these functions are not to be used to predict lateral spreading, which requires LDMs other than those assessed herein. Lastly, the proposed functions are preliminary and subject to further development. In this regard, several thrusts of ongoing investigation are discussed.
Challenges and Opportunities in International Service Learning
Authors: Lee Tina , Berg Devin R. , Buchanan Elizabeth
Published: July 2018

Service learning, and specifically the work of organizations such as Engineers Without Borders USA, have become popular with universities looking to provide their students with applied educational opportunities which blend technical skills with a broader social mission and help the institution demonstrate its global impact. However, questions remain regarding the truly realized outcomes for students, as well as the unintended consequences that may be experienced by the partnering communities. This paper describes early results results from a four-year, mixed-method study which collected data through a combination of interviews and focus groups with members of the Engineers Without Borders USA organization, analysis and coding of completed project documentation, and observations and notes collected during a field visit to a project site. We conclude from our early data that students who are able (given sufficient resources) to fully participate in these type of projects do see positive benefits. However, barriers may prevent all students from having this opportunity. Further, the nature of student service learning projects inherently creates challenges for the communities that partner on these projects. Ongoing revisions to the Engineers Without Borders USA operating procedures may remedy some of the deficiencies, while researchers, participants, and institutions should continue to critically evaluate the impacts and outcomes of their work.
Spontaneous formation of nanoparticles on electrospun fibers for fuel cell electrodes
Authors: Radacsi Norbert , Campos Fernando Diaz , Chisholm Calum , Giapis Konstantinos P.
Published: July 2018

Nanofibers spontaneously decorated with nanoparticles were synthesized by nozzle-free electrospinning, showcasing the latter as a novel, inexpensive and scalable method for depositing high-surface area composites. Layers of nanofibers of the intermediate-temperature proton conducting electrolyte cesium dihydrogen phosphate, (CsH2PO4, CDP), were deposited from homogeneous undersaturated solutions of CDP and polyvinylpyrrolidone (PVP), uniformly over large area substrates. Under certain conditions, the nanofibers develop CDP nanoparticles on their surface, which increases the exposed electrolyte surface area and ultimately enhances electrocatalytic performance. Indeed, fuel cell tests on cathodes made of processed nanoparticle-decorated CDP nanofibers produced higher cell voltage, as compared to state-of-the-art electrodes.
Predicting the Cetane Number of Furanic Biofuel Candidates Using an Improved Artificial Neural Network Based on Molecular Structure
Authors: Kessler Travis , Sacia Eric R. , Bell Alexis T. , Mack John Hunter
Published: July 2018

The next generation of alternative fuels is being investigated through advanced chemical and biological production techniques for the purpose of finding suitable replacements to diesel and gasoline while lowering production costs and increasing process yields. Chemical conversion of biomass to fuels provides a plethora of pathways with a variety of fuel molecules, both novel and traditional, which may be targeted. In the search for new fuels, an initial, intuition-driven evaluation of fuel compounds with desired properties is required. Due to the high cost and significant production time needed to synthesize these materials at a scale sufficient for exhaustive testing, a predictive model would allow chemists to preemptively screen fuel properties of potentially desirable fuel candidates. Recent work has shown that predictive models, in this case artificial neural networks (ANN’s) analyzing quantitative structure property relationships (QSPR’s), can predict the cetane number (CN) of a proposed fuel molecule with relatively small error. A fuel’s CN is a measure of its ignition quality, typically defined using prescribed ASTM standards and a cetane testing engine. Alternatively, the analogous derived cetane number (DCN), obtained using an Ignition Quality Tester (IQT), is a direct measurement alternative to the CN that uses an empirical inverse relationship to the ignition delay found in the constant volume combustion chamber apparatus. DCN data points acquired using an IQT were utilized for model validation and expansion of the experimental database used in this study. The present work improves on an existing model by optimizing the model architecture along with the key learning variables of the ANN and by making the model more generalizable to a wider variety of fuel candidate types, specifically the class of furans and furan derivatives, by including specific molecules for the model to incorporate. The new molecules considered include tetrahydrofuran, 2-methylfuran, 2-methyltetrahydrofuran, 5,5'-(furan-2-ylmethylene)bis(2-methylfuran), 5,5'-((tetrahydrofuran-2-yl)methylene)bis(2-methyltetrahydrofuran), tris(5-methylfuran-2-yl)methane, and tris(5-methyltetrahydrofuran-2-yl)methane. Model architecture adjustments improved the overall root-mean-squared error (RMSE) of the base database predictions by 5.54%. Additionally, through the targeted database expansion, it is shown that the predicted cetane number of the furan-based molecules improves on average by 49.21% (3.74 CN units) and significantly for a few of the individual molecules. This indicates that a selected subset of representative molecules can be used to extend the model’s predictive accuracy to new molecular classes. The approach, bolstered by the improvements presented in this paper, enables chemists to focus on promising molecules by eliminating less favorable candidates in relation to their ignition quality.
Comparative analysis on the effects of diesel particulate filter and selective catalytic reduction systems on a wide spectrum of chemical species emissions
Authors: Liu Z. Gerald , Berg Devin R. , Swor Thaddeus A. , Schauer‡ James J.
Published: July 2018

Two methods, diesel particulate filter (DPF) and selective catalytic reduction (SCR) systems, for controlling diesel emissions have become widely used, either independently or together, for meeting increasingly stringent emissions regulations world-wide. Each of these systems is designed for the reduction of primary pollutant emissions including particulate matter (PM) for the DPF and nitrogen oxides (NOx) for the SCR. However, there have been growing concerns regarding the secondary reactions that these aftertreatment systems may promote involving unregulated species emissions. This study was performed to gain an understanding of the effects that these aftertreatment systems may have on the emission levels of a wide spectrum of chemical species found in diesel engine exhaust. Samples were extracted using a source dilution sampling system designed to collect exhaust samples representative of real-world emissions. Testing was conducted on a heavy-duty diesel engine with no aftertreatment devices to establish a baseline measurement and also on the same engine equipped first with a DPF system and then a SCR system. Each of the samples was analyzed for a wide variety of chemical species, including elemental and organic carbon, metals, ions, n-alkanes, aldehydes, and polycyclic aromatic hydrocarbons, in addition to the primary pollutants, due to the potential risks they pose to the environment and public health. The results show that the DPF and SCR systems were capable of substantially reducing PM and NOx emissions, respectively. Further, each of the systems significantly reduced the emission levels of the unregulated chemical species, while the notable formation of new chemical species was not observed. It is expected that a combination of the two systems in some future engine applications would reduce both primary and secondary emissions significantly.
Comparative Study on Various Methods for Measuring Engine Particulate Matter Emissions
Authors: Liu Z. Gerald , Berg Devin R. , Schauer‡ James J.
Published: July 2018

Studies have shown that there are a significant number of chemical species present in engine exhaust particulate matter emissions. Additionally, the majority of current world-wide regulatory methods for measuring engine particulate emissions are gravimetrically based. As modern engines produce increasingly lower particulate mass emissions, these methods become less and less stable and have high levels of measurement uncertainty. In this study, a characterization of mass emissions from engines with a range of particulate emission levels was made in order to gain a better understanding of the variability and uncertainty associated with common mass measurement methods, as well as how well these methods compare with each other. Two gravimetric mass measurement methods and a reconstructed mass method were analyzed as part of the present study. The results have shown that each of the mass measurement methods analyzed compare well at higher emission levels, but show significant disparity at the ultra-low emission levels commonly seen from modern diesel engines. Additionally, at ultra-low emission the uncertainty in the measurement becomes large, thus reducing confidence in the accuracy of the measurement. Based upon these findings, it would be difficult to justify a comparison between any two gravimetric measurement methods and it may be more appropriate to perform a reconstruction of the particulate mass due to a lower susceptibility to measurement error.
Predicting wheel forces using bearing capacity theory for general planar loads
Authors: Hambleton James , Stanier Samuel
Published: July 2018

This paper assesses the applicability of bearing capacity theory for evaluating the forces generated on wheels operating on clay under steady rolling conditions. Considering recent advances in bearing capacity theory, namely with respect to the interaction diagrams developed for general loading, a theoretical model for computing the horizontal force or torque from fundamental input parameters such as the vertical force (weight), wheel diameter, and undrained shear strength of the soil is presented. The predictions are compared with existing analytical solutions and data from laboratory testing, and reasonable agreement is demonstrated. The foremost conclusion is that bearing capacity theory can be used to obtain reasonable predictions of wheel forces analytically under any operating condition (driven, braked, or towed), provided the contact length and so-called contact angle, which defines the position of the contact interface, can be estimated. Aside from providing a rigorous and highly convenient framework for evaluating wheel forces under arbitrary loading, the analysis enables a natural physical interpretation of the mobility problem.
Fundamentals of Low-Pressure Nanofiltration: Membrane Characterization, Modeling, and Understanding the Multi-Ionic Interactions in Water Softening
Authors: Labban Omar
Published: July 2018

Recently, a novel class of low-pressure nanofiltration (NF) hollow fiber membranes, particularly suited forwater softening and desalination pretreatment have been fabricated in-house using layer-by-layer (LbL) depositionwith chemical crosslinking. These membranes can operate at exceedingly low pressures (2 bar),while maintaining relatively high rejections of multivalent ions. In spite of their great potential, our understandingas to what makes them superior has been limited, demanding further investigation before anylarge-scale implementation can be realized. In this study, the Donnan-Steric Pore Model with dielectricexclusion (DSPM-DE) is applied for the first time to these membranes to describe the membrane separationperformance, and to explain the observed rejection trends, including negative rejection, and their underlyingmulti-ionic interactions. Experiments were conducted on a spectrum of feed chemistries, ranging fromuncharged solutes to single salts, salt mixtures, and artificial seawater to characterize the membrane andaccurately predict its performance. Modeling results were validated with experiments, and then used toelucidate the working principles that underlie the low-pressure softening process. An approach based onsensitivity analysis shows that the membrane pore dielectric constant, followed by the pore size, are primarilyresponsible for the selectively high rejections of the NF membranes to multivalent ions. Surprisingly,the softening process is found to be less sensitive to changes in membrane charge density. Our findingsdemonstrate that the unique ability of these membranes to exclusively separate multivalent ions from thesolution, while allowing monovalent ions to permeate, is key to making this low-pressure softening processrealizable.
Automatic Pill Dispenser
Authors: Frischmon Tyler , Daly Aaron , Renshaw Erin
Published: July 2018

College project created at the University Of Wisconsin-Stout.
AHP INCONSISTENCY REDUCTION THROUGH TWO GREEDY ALGORITHMS APPLICATION
Authors: Pereira Valdecy , Costa Helder Gomes
Published: July 2018

The purpose of this paper is to present two greedy algorithms that can improve the consistency of an AHP Matrix adjusting the original comparisons with discrete values. The first one aims to preserve the original pairwise comparisons as much as possible and the second one improves the consistency ratio as much as possible. Both algorithms were compared with other 11 methods, from the past and recent literature, through three numerical examples: one inconsistent matrix with 9 criteria, one with 8 criteria and the last one, a highly inconsistent matrix with 7 criteria. Our method performed better than all the other ones. The proposed method can be used independently from the techniques to derive the eigenvector, eigenvalue or the consistent ratio, and naturally, in order to make a sensible comparison, all methods were compared using the same techniques. The Conservative Algorithm solution, gains in quality because it can preserve most of the original information, however the consistent ratio value stays just below the consistency threshold, in the other hand, the Progressive Algorithm gains in quantity, because it aims to reduce the consistent ratio to zero or near zero. Our approach offers two types of solutions, that are fast and near optimal.
Mining Process Heuristics from Designer Action Data via Hidden Markov Models
Authors: McComb Christopher , Kotovsky Kenneth , Cagan Jonathan
Published: July 2018

Configuration design problems, characterized by the assembly of components into a final desired solution, are common in engineering design. Various theoretical approaches have been offered for solving configuration type problems, but few studies have examined the approach that humans naturally use to solve such problems. This work applies data-mining techniques to quantitatively study the processes that designers use to solve configuration design problems. The guiding goal is to extract beneficial design process heuristics that are generalizable to the entire class of problems. The extraction of these human problem-solving heuristics is automated through the application of hidden Markov models to the data from two behavioral studies. Results show that designers proceed through four procedural states in solving configuration design problems, roughly transitioning from topology design to shape and parameter design. High-performing designers are distinguished by their opportunistic tuning of parameters early in the process, enabling a more effective and nuanced search for solutions.
Perancangan Data Warehouse dan Penerapan Data Mining Di Bidang Akademik Pada Institut Informatika Dan Bisnis Darmajaya
Authors: Sutedi Sutedi
Published: July 2018

Higher education institution must be able to well perform processes ofevaluation, planning and management in order to win the competition in thisglobalization era. To support any effort of the aforementioned, the institution needsqualified and sufficient information supports so that it can probe and predict anypotential strength which existed.Development data warehouse and data mining is kinds of solution alternativeswhich can be done to help organization in finding and understanding hidden patternsfrom the data provided. Data warehouse is a collection of integrated databaseswhich is used to support the process of decision making. Data mining is a kind ofanalysis tool which is used to extract any information provided in the datawarehouse.The research discussed a problem in designing data warehouse and applyingdata mining to support the academic system at IBI Darmajaya in representingpotential information required for better academic services to learners. The firstexecuted steps was establishing the data warehouse of IBI Darmajaya, then ananalysis was conducted towards all saved data in the data warehouse by using datamining techniques.The results of this research is a data warehouse that can represent informationto support the evaluation process and acceptance of new students campaign planningto the potential areas and school, advertising media that will be used, monitoring ofstudents’ academic status, evaluation and planning of students’ study plans, andperformance evaluation of study program within the aspects of alumni quality andlength of study. In addition, this research also result the application of data miningfor finding the rules that used to driving and directing the students enthusiast andstudy program selection for prospective new students.
ENABLING GRADUATE ENGINEERING STUDENTS WITH PROFICIENCY IN MOBILE ROBOTICS
Authors: Raman Adhiti
Published: July 2018

In recent years, an aggressive expansion of research as well as commercialization efforts in autonomous vehicles can be witnessed. At the same time, many existing companies have expanded their portfolio to autonomous technologies as well (e.g. NVIDIA). This has created an already large need for autonomous-vehicle engineers who are not only proficient in single traditional engineering fields (e.g. mechanical) and old-school automotive studies, but who also have acquired the significantly different, interdisciplinary skillset for mobile robotics. Unlike students of computer science, mechanical engineering graduate students are hardly exposed to coding and robotic system integration in current traditional curricula. The new demands of the automotive industry require an automotive engineer who understands the science of autonomy as well as its impact on the design and implementation of autonomous vehicles, and is equipped with hands-on experience with the latest technology in the field.We describe a unique education program that draws content from traditional courses on mobile-robotics as well as incorporates experiential learning by hands-on training in software, specifically addressing the skill gap in traditional automotive engineering education. Geared towards engineering students with no previous training in robotic system integration, and with only basic undergraduate understanding of programming languages, the teaching experiment employed an active learning approach to introduce numerous concepts as a host of hands-on exercises on multiple robotic platforms. Beginning with simple tutorials on networked communication to demonstrate the power of ROS, the course built up to complete control system design on a student-built RC car that can avoid obstacles and navigate a racecourse by performing SLAM.A brief evaluation of the course exhibited good student performance in general with unique and creative approaches to the programming tasks in particular. Although employing different approaches, each student team was able to demonstrate comparable, efficient performance.
Malawi Nano-hydro electric generator
Authors: Lemke Joshua
Published: July 2018

Nano-hydro electric generator utilizing a casted aluminum pulley system
Automatic Page-Turning Mechanism with Near-Field Electroadhesive Force for Linearly Correctable Imaging
Authors: Lee Junseok
Published: July 2018

Recently, demand for digitization of books has increased in tandem with thespread of portable devices for electronic books. However, in a number ofinvented book-scanning devices, pages are turned manually by users, orpricey three-dimensional cameras are needed for image correction. Ourautomatic page-turning mechanism employs near-field electroadhesive forceto turn a single page. As the near-field electroadhesive force on theclosest sheet of paper is far stronger than that on the second, only asingle sheet of paper can be lifted. Using Fourier series expansion, weprove that regardless of the geometrical configuration of electrodes, theforce ratio on the closest to the second is dominantly controlled by theperiod of the configuration. Based on this, a novel electrode configurationis designed aiming to give higher force ratio than the conventionalinterdigital patterns. The advantage of our mechanism in image processingis that perspective correction is compatible with our mechanism, hence notrequiring devices for acquiring 3-D information to reconstruct images. Ourautomatic page-turning mechanism with a fair success rate and the reducednumber of components shows that it is a promising method for automaticlow-cost book-scanning devices.
Ground motion observations from the 14 November 2016 Mw7.8 Kaikoura, New Zealand earthquake and insights from broadband simulations
Authors: Bradley Brendon Archie
Published: July 2018

This paper provide insights into the observed ground motion records from the 14 November 2016 $M_w7.8$ Kaikoura earthquake. Specific detail is given to examining observations in the near-source and those in the urban Wellington / Lower Hutt regions through a combination of time series and response spectra to understand salient source, path and site effects.Several ground motions exceeding 1.0g horizontal are recorded, as well as up to 2.7g in the vertical direction at one location.The complexity associated with multi-fault rupture is clearly evident in several strong motion stations in the near-source region.Significant site effect case histories from sedimentary and reclaimed soil deposits and topographic effects are observed in the Wellington and Lower Hutt regions.To provide further insights, predictions from preliminary broadband ground motion simulations are examined to more directly interpret the observations.
Assistive Technology for Freshmen Design and K-12 Outreach
Authors: Berg Devin R. , Wigdahl Matthew , Collins Charis D.
Published: July 2018

This Work in Progress paper presents on the design of project-based learning approach focused on assistive technology as applied in a freshmen level engineering course which also integrates outreach with the local K12 system. The university course targets general education topics as well as an introductory engineering design experience and includes content on the engineering design process, societal implications of engineering design, and a participatory lab-based design project. A partnering class of 5th graders from a local elementary school made use of a daily block of time set aside for academic interventions and individual project-based work to collaborate with the university class. A qualitative assessment was conducted and has thus far has revealed that the university students found the assistive technology theme of the semester-long design project to be meaningful. For the K12 students, the survey results and anecdotal observations suggest that we were only moderately successful in constructing a meaningful and purposeful design experience, from their perspective.
Drawing Inspiration From Human Design Teams For Better Search And Optimization: The Heterogeneous Simulated Annealing Teams Algorithm
Authors: McComb Christopher , Cagan Jonathan , Kotovsky Kenneth
Published: July 2018

Insights uncovered by research in design cognition are often utilized to develop methods used by human designers; in this work such insights are used to inform and improve computational methodologies. This paper introduces the Heterogeneous Simulated Annealing Team (HSAT) algorithm, a multi-agent simulated annealing algorithm. HSAT is based on a validated computational model of human-based engineering design, and retains characteristics of the model that structure interaction between team members and allow for heterogeneous search strategies to be employed within a team. The performance of this new algorithm is compared to several other simulated annealing based algorithms on three carefully selected benchmarking functions. The HSAT algorithm provides terminal solutions that are better on average than other algorithms explored in this work.
Data on the Configuration Design of Internet-Connected Home Cooling Systems by Engineering Students
Authors: McComb Christopher , Cagan Jonathan , Kotovsky Kenneth
Published: July 2018

This experiment was carried out to record the step-by-step actions that humans take in solving a configuration design problem, either in small teams or individually. Specifically, study participants were tasked with configuring an internet-connected system of products to maintain temperature within a home, subject to cost constraints. Every participant was given access to a computer-based design interface that allowed them to construct and assess solutions. The interface was also used to record the data that is presented here. In total, data was collected for 68 participants, and each participant was allowed to perform 50 design actions in solving the configuration design problem. Major results based on the data presented here have been reported separately, including initial behavioral analysis and design pattern assessments via Markovian modeling.
Lifting the Veil: Drawing Insights about Design Teams from a Cognitively-inspired Computational Model
Authors: McComb Christopher , Kotovsky Kenneth , Cagan Jonathan
Published: July 2018

Novel design methodologies are often evaluated through studies involving human designers, but such studies can incur a high personnel cost. It can also be difficult to isolate the effects of specific team or individual characteristics. This work introduces the Cognitively-Inspired Simulated Annealing Teams (CISAT) modeling framework, a platform for efficiently simulating and analyzing human design teams. The framework models a number of empirically demonstrated cognitive phenomena, thus balancing simplicity and direct applicability. This paper discusses the model's composition, and demonstrates its utility through simulating human design teams in a cognitive study. Simulation results are compared directly to the results from human designers. The CISAT model is also used to identify the most beneficial characteristics in the cognitive study.
Final Report on The Simon Project
Authors: Nelson Matthew , Knaak Tony , Domeier Ryan , Meyer Marcus , Maeder Collin
Published: July 2018

Simon game that will help people with muscular disability. have more fun doing there daily muscle workout by playing a game instead of doing something very repetitive. our game is more unique then a normal Simon game as you can put the buttons which are on stands that you can put anywhere.
Low-cost methodology for skin strain measurement of a flexed biological limb
Authors: Lin Bevin , Moerman Kevin Mattheus , McMahan Connor , Pasch Kenneth , Herr Hugh
Published: July 2018

*Objective:* The purpose of this manuscript is to compute skin strain datafrom a flexed biological limb, using portable, inexpensive, andeasily-available resources. *Methods:* We apply and evaluate this approachon a person with bi-lateral transtibial amputations, imaging left and rightresidual limbs in extended and flexed knee postures. We map 3D deformationsto a flexed biological limb using freeware and a simple point-and-shootcamera. Mean principal strain, maximum shear strain, as well as lines ofmaximum, minimum, and non-extension are computed from 3D digital models toinform directional mappings of the strain field for an unloaded residuallimb.*Results:* Peak tensile strains are ~ 0.3 on the anterior surface of theknee in the proximal region of the patella, whereas peak compressivestrains are ~ -0.5 on the posterior surface of the knee. Peak maximum shearstrains are ~ 0.3 on the posterior surface of the knee. The accuracy andprecision of this methodology are assessed for a ground truth model. Themean point location distance is found to be 0.08 cm, and the overallstandard deviation for point location difference vectors is 0.05 cm.*Conclusion:* This low-cost and mobile methodology may prove critical forapplications such as the prosthetic socket interface where whole-limb skinstrain data are required from patients in the field outside of traditional,large-scale clinical centers.*Significance:* Such data may inform the design of wearable technologiesthat directly interface with human skin.
A structure-based algorithm for automated separation of subchondral bone in micro-computed tomography data
Authors: Ang Ida C , Fox Maria Christine , Polk John D. , Kersh Mariana E
Published: July 2018

Structural measurements of subchondral and trabecular bone are of interest for a wide variety of communities ranging from anthropology to biomechanical engi- neering, yet continues to be a challenge partly because of the lack of automated techniques for use with high resolution data. Here we present a structure-based algorithm for separating cortical compartments from trabecular bone in binarized images. Using the thickness of the cortex as a seed value, bone connected to the cortex within a spatially local threshold value is identified and separated from the remaining bone. The algorithm was tested on biological images from human, chim- panzee, and gorilla datasets and compared to manual measurements. The average error was 2-3 voxel differences in thickness and total area errors were less than ten percent. The algorithm is repeatable, efficient, and requires few user inputs, provid- ing a means of separating cortical from trabecular bone. The Matlab code, example images, and datasets can be downloaded from uitbl.mechse.illinois.edu.
X-57 Power and Command System Design
Authors: Clarke Sean , Redifer Matthew , Papathakis Kurt , Samuel Aamod , Foster Trevor
Published: July 2018

This paper describes the power and command system architecture of the X‑57 Maxwell flight demonstrator aircraft. The X-57 is an experimental aircraft designed to demonstrate radically improved aircraft efficiency with a 3.5 times aero-propulsive efficiency gain at a “high‑speed cruise” flight condition for comparable general aviation aircraft. These gains are enabled by integrating the design of a new, optimized wing and a new electric propulsion system. As a result, the X‑57 vehicle takes advantage of the new capabilities afforded by electric motors as primary propulsors. Integrating new technologies into critical systems in experimental aircraft poses unique challenges that require careful design considerations across the entire vehicle system, such as qualification of new propulsors (motors, in the case of the X-57 aircraft), compatibility of existing systems with a new electric power distribution bus, and instrumentation and monitoring of newly qualified propulsion system devices.
Incorporation of liberal education into the engineering curriculum at a polytechnic
Authors: Berg Devin R. , Lee Tina
Published: July 2018

Traditional engineering education often falls short when it comes to the inclusion of issues related to social justice, ethics, and globalization. While engineering programs are required to include ethics content for accreditation, most seem to rely primarily on general education electives, providing only a high-level overview and including the bare minimum in the program core. This can lead to an inconsistent student experience and minimal exposure to topics which are critically important for achieving worldwide equity and operating responsibly in the engineering workplace. Given the role that engineers play in economic development, this is unacceptable. It is therefore the responsibility of engineering educators to find a better way to shape the future of the engineering profession. This paper outlines the early efforts at integrating the topics of ethics, social justice, and social responsibility more directly into the engineering curriculum. This is approached from the perspectives of pedagogy, curriculum development, and service learning opportunities. It is within this context that the authors hope to influence students' awareness of and connection to social and environmental issues as well as the ethical frameworks they develop and carry with them into their professional careers. This paper centers around the creation and delivery of a new introductory engineering course combining liberal education topics and introductory engineering topics. This course also includes a substantial design project which incorporates a cultural engagement component through collaboration with international partners. The first offering of this new course revealed that, while some reservations persist, students found value in exploring what it means to be an engineer in a broader global context.
Global Engineering Projects from the Young African Leaders Initiative
Authors: Lacksonen Tom , Springer Scott , Berg Devin R.
Published: July 2018

In this paper several projects that integrate globalization issues into undergraduate engineering and technology coursework are discussed.The Mandela Washington Fellowship for Young African Leaders brings African entrepreneurs to United States campuses for six weeks every summer, providing an excellent opportunity to identify potential clients for global engineering class projects. Many of the fellows could benefit from having access to engineering skills to grow their businesses. The university’s engineering faculty partnered with fellows on projects in freshman Impacts of Engineering, junior Lean Manufacturing, and senior Capstone Design classes. Projects have included conceptual product design, detailed product design, process selection, manufacturing equipment design, and facilities design. Several engineering and technology majors have participated in the projects. The highlight is a micro-hydroelectric generator design project spanning several classes and semesters.The projects are similar to traditional class projects and cover all existing course objectives. Students are also required to research and apply international standards, including product, safety and facility standards. Students also must consider the appropriate level of technology, humanitarian engineering aspects, and societal impact of the design. Assessment of the international component of one project allows programs to evaluate performance indicators on the global and societal impact of designs as part of ABET Outcome H assessment. The projects are also part of a larger humanitarian engineering initiative at the institution, and are assessed through surveys for that initiative.Submitted to the 2017 ASEE Annual Conference
Dispensing-Based Bioprinting of Hybrid Scaffolds with Vessel-like Channels for Tissue Engineering Applications – A Brief Review
Authors: Naghieh Saman , Sarker Md , Izadifar Mohammad , Chen Xiongbiao
Published: July 2018

Over the past two decades, significant progress has been achieved in the field of tissue engineering (TE) to restore/repair damaged tissues or organs and, in this regard, scaffolds made from biomaterials have played a critical role. Notably, recent advances in biomaterials and three-dimensional (3D) printing have enabled the manipulation of two or more biomaterials of distinct, yet complementary, mechanical and/or biological properties to form so-called hybrid scaffolds mimicking native tissues. Among various biomaterials, hydrogels synthesized to incorporate living cells and/or biological molecules have dominated due to their hydrated tissue-like environment. Moreover, dispensing-based bioprinting has evolved to the point that it can now be used to create hybrid scaffolds with complex structures. However, the complexities associated with multi-material bioprinting and synthesis of hydrogels used for hybrid scaffolds pose many challenges for their fabrication. This paper presents a brief review of dispensing-based bioprinting of hybrid scaffolds for TE applications. The focus is on the design and fabrication of hybrid scaffolds, including imaging techniques, potential biomaterials, physical architecture, mechanical properties, cell viability, and the importance of vessel-like channels. The key issues and challenges for dispensing-based bioprinting of hybrid scaffolds are also identified and discussed along with recommendations for future research directions. Addressing these issues will significantly enhance the design and fabrication of hybrid scaffolds to and pave the way for translating them into clinical applications.
Translational Studies of the Effects of Pulsed HIFU using a Modified Clinical MR guided Focused Ultrasound Device
Authors: O'Neill Brian , Li C.
Published: July 2018

The effects of pulsed mode HIFU, which have been observed to aid the local delivery of large molecule therapeutics without lasting detriment to the tissue, can be effectively translated from mouse models to bulk tissue models in larger animals, and eventually to humans. While pulsed HIFU drug delivery cannot be properly termed as surgery, it can be shown that the current FUS technology may be easily adapted to provide pulsed HIFU as an adjuvant or alternative therapy for those situations where FUS would be impractical. Because the pulsed HIFU power levels are much lower, on average, than normal FUS, it should be possible to pursue an efficient and effective pulsed HIFU enhanced drug delivery treatment with less concern for damage in the near and far field regions. The technique employed here, unlike other competing techniques, does not use ultrasound contrast agents or explicitly rely on cavitation. Cavitation activity is non-uniform and hard to control, ultimately leading to irreversible damage and death of some cells in the affected population, and thus may be at a disadvantage when it comes to regulatory approval. The use of ultrasound contrast agents for diagnostic echocardiography is now carrying “black box” warnings from the FDA proving that this concern is justified. Our proposed technique is designed to avoid this issue altogether. Pulsed HIFU treatment of mice without the use of contrast agents has consistently demonstrated improved local delivery of large molecular markers and has also been associated with improved therapeutic outcomes. The major hurdle to be overcome at this point is to demonstrate that the method will safely and effectively translate from the murine model to larger animal geometries. This is the main goal of the proposed research. A secondary goal is to further elucidate the mechanism behind the effect to develop a strategy for optimization of the procedure.
SEBARAN MANGROVE SEBELUM TSUNAMI DAN SESUDAH TSUNAMI DI KECAMATAN KUTA RAJA KOTA BANDA ACEH
Authors: saputra syifa
Published: July 2018

Sebaran mangrove di Kecamatan Kuta Raja Kota Banda Aceh belum merata dikarenakan belum adanya perhatian khusus dari pemerintah dan stakeholder lainnya. Penelitian ini bertujuan untuk mengetahui sebaran mangrove di Kecamatan Kuta Raja Kota Banda Aceh. Metode dalam penelitian ini adalah deskriptif. Teknik pengolahan data dilakukan dengan survei dan observasi. Analisis data dijelaskan secara deskriptif. Hasil penelitian luas mangrove tahun 2004 sebelum tsunami 66,25 ha dan tahun 2015 setelah tsunami 47,9 Ha, mangrove yang ada di lokasi penelitian mengakibatkan penyusutan sebesar 18,6 Ha yang disebabkan oleh gelombang tsunami pada tahun 2004. Simpulan terdapat 18 jenis mangrove yang sudah dewasa dan tersebar di 3 titik lokasi penelitian yaitu Gampong Jawa, Gampong Pande dan Gampong Peulanggahan sedangkan mangrove yang paling dominan terdapat di Gampong Jawa.
The Effect of Read-Write Epistemologies on Programming Languages
Authors: Achmady Sayed
Published: July 2018

Von Neumann machines must work. Even though thisoutcome might seem unexpected, it is derived fromknown results. In fact, few cyberinformaticians woulddisagree with the analysis of the Turing machine. Herewe demonstrate not only that Boolean logic and lambdacalculus can connect to achieve this intent, but that thesame is true for von Neumann machines.
Pelestarian Air Bawah Tanah Di Kota Makasar
Authors: Asriadi Asriadi , Pamudjianto Agung
Published: July 2018

Kebutuhan akan air selalu meningkat dengan berkembangnya pembangunan dan berkembangnya jumlah penduduk. Berkembangnya pembangunan baik di kota maupun di desa, akan mengurangi lahan resapan air sehingga jumlah air yang masuk ke dalam tanah untuk mengganti air tanah yang keluar menjadi berkurang. Proses pengendalian pemanfaatan air bawah tanah merupakan upaya untuk menjamin pemanfaatan air bawah tanah secara bijaksana serta menjaga kesinambungan kuantitas dan kualitasnya. Pertumbuhan kebutuhan akan air bersih seiring dengan pertumbuhan jumlah penduduk dan perkembangan aktivitasnya serta keterbatasan sumber air baku air permukaan cenderung mendorong pemanfaatan air tanah yang terus meningkat. Upaya pelestarian air bawah tanah di Kota Makassar telah dilakukan melalui aspek perizinan, aspek pengawasan, aspek penertiban, dan aspek konservasi (rehabilitasi).
The influence of religiosity and self-efficacy on the saving behavior of the Іslamic banks.
Authors: nugroho anton priyo
Published: July 2018

Indonesia is a country with the largest Muslim population in the world. However, since the Islamic banks were being established in Indonesia for about 20 years, their market share only accounts for about 5% in the Indonesian banking system. Muslim participations in using Islamic bank are relatively low. This study expands the Theory of Planned Behavior by adding the variables of religiosity and self-efficacy. Previous studies have not examined this new expanded model to analyze customers who participated in using the saving Islamic bank’s products and services. Based on 220 Islamic bank consumers who participated in the study, the study indicated that questionnaires about religiosity and self-efficacy had good external validity and could be adapted for the Indonesian culture context. The most interesting finding was that the religiosity variable strongly enhanced the use of Islamic banks. Similarly, this study found that the self-efficacy variable improved an intention of customers to participate in the Islamic banking system. This paper also discusses the implications of the findings and recommendations for future studies.
MASA DEPAN KAJIAN ISLAM DI INDONESIA
Authors: Wekke Ismail Suardi
Published: July 2018

Islamic higher educations in Indonesia extend their roles in many ways. They perform institutional organization to wide capacity and educational activities. First bacth, there were six universities to transform. After the first batch, there were a huge numbers of transformations either from college to institute or institute to university. Unfortunately, best practices from first batch did not apply to the next cohort. This paper discusses three main area, they are current condition, achievement, and opportunities to explore. On the other hand, regional situation in Southeast Asia is not the only one to overlook. There is the environment surrounding our higher education in providing service to community. Finally, this recent problems need to extend in the world condition of higher education.
PENENTUAN STRATEGI BISNIS MELALUI ANALISIS SWOT PADA JAXS BARBERSHOP DI KOTA MAKASSAR
Authors: Alam Syamsul
Published: July 2018

This research uses SWOT analysis with quantitative approach for strategydevelopment that can be used by Jaxs Barbershop in running its business strategy. TheSWOT indicators are developed for further analysis in a measure of the significantindicators of the company's ability to deal with other companies that develop similarbusinesses.This research found some indicators turned out to be quite significant effect.Furthermore, in the SWOT charts performed based on quantitative calculations with thehelp of microsoft exel program it is known that Jaxs Barbeshop is in quadrant one whichmeans support strategy
[Preprint] An overview of electrokinetic soil flushing and its effect on bioremediation of hydrocarbon contaminated soil
Authors: Ramadan Bimastyaji Surya , effendi agus jatnika , sari gina lova , Rosmalina Raden Tina , hadrah
Published: July 2018

Combination of electrokinetic soil flushing and bioremediation (EKSF-Bio) technology has attracted many researchers attention in the last few decades. Electrokinetic is used to increase biodegradation rate of microorganisms in soil pores. Therefore, it is necessary to use solubilizing agents such as surfactants that can improve biodegradation process. This paper describes the basic understanding and recent development associated with electrokinetic soil flushing, bioremediation, and its combination as innovative hybrid solution for treating hydrocarbon contaminated soil. Surfactant has been widely used in many studies and practical applications in remediation of hydrocarbon contaminant, but specific review about those combination technology cannot be found. Surfactants and other flushing/solubilizing agents have significant effects to increase hydrocarbon remediation efficiency. Thus, this paper is expected to provide clear information about fundamental interaction between electrokinetic, flushing agents and bioremediation, principal factors, and an inspiration for ongoing and future research benefit.
Effect Through Broadcasting System Access Point for Video Transmission
Authors: Siahaan Andysah Putera Utama
Published: July 2018

Most universities are already implementing wired and wireless network that is used to access integrated information systems and the Internet. At present, it is important to do research on the influence of the broadcasting system through the access point for video transmitter learning in the university area. At every university computer network through the access point must also use the cable in its implementation. These networks require cables that will connect and transmit data from one computer to another computer. While wireless networks of computers connected through radio waves. This research will be a test or assessment of how the influence of the network using the WLAN access point for video broadcasting means learning from the server to the client. Instructional video broadcasting from the server to the client via the access point will be used for video broadcasting means of learning. This study aims to understand how to build a wireless network by using an access point. It also builds a computer server as instructional videos, supporting software that can be used for video server that will be emitted by broadcasting via the access point and establish a system of transmitting video from the server to the client via the access point.