Emissions of CH 4 from natural gas infrastructure must urgently be addressed to mitigate its effect on global climate. With hundreds thousands miles pipeline in the US used transport gas, current methods surveying for leaks are inadequate. Mixed potential sensors a low cost, field deployable technology remote and continuous monitoring infrastructure. We demonstrate first time trial mixed sensor device coupled with machine learning internet-of-things platform at Colorado State University’s...

The effects of a two-dimensional (2D) electromagnetic bandgap substrate on the performance microstrip patch antenna are investigated. is placed defect in that localizes energy under antenna. Finite-difference time-domain calculations employed to determine substrate. excitation frequency near resonance mode can be used control coupling between antennas an array.

This article presents an overview of Peace Engineering activities at the University New Mexico (UNM) School (SOE) and Health Sciences Center (HSC). In 2018, UNM's SOE hosted joint summit World Education Forum Global Deans Council. The theme, “Peace Engineering,” focused on science engineering-based solutions to world's grand challenges. Outcomes this first global conference include creating new academic programs opening a wide area for education, research innovation addressing climate...

Using a free-space configuration and frequency-domain detection setup, group velocities of electromagnetic waves in distributed Bragg reflector are investigated. Experimental data indicate that, near the regions minimal transmission our configuration, velocity is 2.1 times faster than speed light vacuum. A model based on diagonalization transfer matrix used to compare experimental theoretical calculations, good agreement obtained. An overview uncertainties their effects measured quantities provided.

We present theoretical modeling and experimental validation of both capacitive (dot) inductive (hole) metallic crossed gratings in the mid-infrared (2-5 microm). The are fabricated by use interferometric lithography modeled rigorous coupled-wave analysis. Our numerical investigations transmittance spectra these suggest that, as grids, behavior grids is described coupling incident light into surface plasma waves.

Face-centred-cubic photonic crystals with overlapping stop bands are stacked in tandem to obtain an ultrawideband crystal. This crystal has a band that extends from 16 at least 25 GHz and minimum rejection of ~7 dB normal incidence. Different stacking configurations have been studied, cavity modes between nonadjacent observed.

ABSTRACT We have experimentally and computationally studied the integration of a microstrip patch antenna with two-dimensional photonic crystal substrate. This was fabricated on defect in lattice that localized energy under antenna. The finite-difference time-domain method employed to study characteristics this Measurements are excellent agreement calculations. effects finite size ground planes were also studied. work can lead new design tool for integrating antennas substrates.

Emissions are a significant contributor to climate change [1-2]. Low-cost sensor platforms needed understand the levels of emissions and types [3]. In addition, sensors help determine impact what soon-to-be prominent gases, like hydrogen, will have on environment [4]. Mixed potential electrochemical promising technology for foundation platform [5]. Our group has developed an AI-powered, IoT-driven capable measuring differentiating sources methane, carbon monoxide, ammonia oxides nitrogen...

The creation of the Peace Engineering Consortium is an outcome First Global Conference, held November 2018 in Albuquerque NM, USA (www.weef-gedc2018.org). A team conference participants are collaborating to develop Consortium. That is, define and implement its charter, identify initiatives preliminary activities, continue definitions what (PEng) – or for is. PEng a call action, new mindset not only engineering, but all existing future disciplines address global challenges. Current activities...

A lot has been written, discussed, and argued about what the ideal profile of a global engineer looks like. The author's experiences reflect that way to educate new generation(s) professional engineers is develop their international in we call Natural EcoSystem™. must be aware of, versed in, it takes create, operate under inside EcoSystem™; is, gain an understanding how markets, capital, services, intellectual property, R&D, education, policies, venture funds nonprofits, industry utilities,...

The intent is to share 28 years of experience the Ibero-American Science and Technology Education Consortium (ISTEC, www.istec.org). original idea ISTEC was use (S&T) as common language catalyst for social, cultural, political, economic development. We envisioned then S&T practical Peace Engineering international efforts. also about sharing (information, technology, services) by forming alliances among academia, industry, government agencies, multilateral organizations. success based in...

This paper summarizes the overall results of VIII World Engineering Education Forum, X Global Deans Council, XIV Student held in November 2018 Albuquerque, NM USA, and discusses emerging global collaboration for Peace (PEng) education. The theme this first ever conference on was tune with events developments. Participants were a confluence practitioners, researchers, policy makers educators from all over world, encompassing academia, multinational industry, US national labs multilateral...

Transmission measurements of a barium ferrite pressed-powder sample have been made with an optically switched picosecond-pulse spectrometer. By comparison to millimeter-wave spectroscopy the same sample, features related ferrimagnetic resonance identified in pulse spectrum. Time-domain spectra predicted from models permeability indicate significant discrepancies experimental short-pulse line shape.

The interaction of a high-power microwave beam with face-centered-cubic photonic crystal is studied. A Sinus-6 relativistic repetitively pulsed electron accelerator was used to drive slow wave structure in vacuum generate 450 MW at 9.65 GHz. It shown that the crystal, comprised periodic arrangement air holes dielectric host, capable performing as quasi-optical reflector similar metal. crystals can be designed operate efficient frequency-selective reflectors over narrow frequency ranges. We...

The goal of GINET is to create a Global Network Entrepreneurial Programs among Academia, Industry, Research & Development Centers, Governments, Investors/Mentors, Multilateral Organizations, and Individuals/Visionaries/Entrepreneurs (serial first time). objective for the identification innovative ideas, services, applications, prototypes, products, through strategic alliances with investors, industry government agencies bring these innovations marketplace.

Ultra-wideband transient microwave scattering measurements were performed using optoelectronically switched planar antennas. The laser-based system produces freely propagating bursts of picosecond duration electromagnetic radiation, with a bandwidth extending from 5 to over 70 GHz. Measurements are presented for one and two conducting strips sphere. All compared theoretical computations.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>

The use of picosecond duration bursts electromagnetic radiation to study short-pulse wave propagation in layered dieletric materials is discussed. generated using planar antennas that are switched photoconductively. measurements compared with time- and frequency-domain theoretical data. Issues associated the windowing time-domain results for highly resonant structures addressed, as well how derived frequency domain data influenced by windowed Fourier transform. accuracy suggest this...

Transportation of hydrogen is one the greatest hurdles to overcome in development a clean economy [1]. A cost-effective solution transportation mix it with natural gas (NG) and utilize current pipeline infrastructure for [2]. However, embrittlement, higher diffusivity H 2 , uncertain state much existing makes leaks an environmental safety concern. Current NG leak detection technologies largely use optical sensors such as IR spectrometers that are incapable detecting [3]. Mixed potential...

Methane’s global warming potential is 28x higher than that of CO 2 on a 100 year basis.[1] The US has over 300,000 miles pipeline transporting natural gas, and recent estimates put the cost emissions in terms lost product societal impacts order billions dollars.[2] In gas industry, excess which cannot be economically used for production destroyed by burning flares. A aerial study found methane destruction efficiency was only 91%, result inefficient flaring instruments or unlit flares.[3]...

This paper presents an overview of three recently developed scene-based nonuniformity correction techniques, namely, the algebraic algorithm (ASBA), extended radiometrically accurate (RASBA) and generalized (GASBA). The ASBA uses pairs image frames that exhibit one-dimension sub-pixel motion to algebraically extract estimates bias nonuniformity. RASBA incorporates arbitrary sub- super-pixel two-dimensional in conjunction with limited perimeter-only absolute calibration obtain provides...

Abstract How do we frame Peace engineering education? A complex, but vital quest. This paper describes elements and questions of Engineering education as they emerge from the VIII World Education Forum, X Global Deans Council, XIV Student held November 2018 in USA for first time. Rather than long presentations by established scholars, convened pioneers who have spent last decades educating engineers to work an engaged, compassionate, competent way with local global problems necessity...