No abstract available
Topics: NASA Technical Reports Server (NTRS), c1f764c1adf54631aa0b74e89d353478, Johnson, Marcus, Moffett...
This paper describes some basics for the root locus controls design method as well as for loop shaping, and establishes approaches to expedite the application of these two design methodologies to easily obtain control designs that meet requirements with superior performance. The two design approaches are compared for their ability to meet control design specifications and for ease of application using control design examples. These approaches are also compared with traditional Proportional...
Topics: NASA Technical Reports Server (NTRS), Kopasakis, George, NASA Glenn Research Center
No abstract available
Topics: NASA Technical Reports Server (NTRS), 14828087688c4fbea622a15760ae90ff,...
A 1722-hr wear test campaign of NASA's 12.5-kW Hall Effect Rocket with Magnetic Shielding was completed. This wear test campaign, completed in 2016, was divided into four segments including an electrical configuration characterization test, two short duration tests, and one long wear test. During the electrical configuration characterization test, the plasma plume was examined to provide data to support the down select of the electrical configuration for further testing. During the long wear...
Topics: NASA Technical Reports Server (NTRS), 1428e35d979a4a7682668e9e39003c7d,...
Hall thrusters exhibit characteristic discharge voltage and current oscillations during steady-state operation. The lower frequency breathing-mode current oscillations are inherent to each thruster and could impact thruster operation and PPU design. The design of the discharge output filter, in particular, the output capacitor is important because it supplies the high peak current oscillations that the thruster demands. However, space-rated, high-voltage capacitors are not readily available and...
Topics: NASA Technical Reports Server (NTRS), NASA Glenn Research Center, Pinero, Luis R.
Hollow dispenser cathode inserts are a critical element of electric propulsion systems, and should therefore be well understood during long term operation to ensure reliable system performance. This work destructively investigated cathode inserts from the NEXT long-duration test which demonstrated 51,184 hours of high-voltage operation, 918 kg of propellant throughput, and 35.5 MN-s of total impulse. The characterization methods used include scanning electron microscopy with energy dispersive...
Topics: NASA Technical Reports Server (NTRS), Cleveland, OH, United States,...
Several businesses and government agencies, including the National Aeronautics and Space Administration are currently working on solving key technological barriers that must be overcome in order to realize the vision of low-boom supersonic flights conducted over land. However, once these challenges are met, the manner in which this class of aircraft is integrated in the National Airspace System may become a potential constraint due to the significant environmental, efficiency, and economic...
Topics: NASA Technical Reports Server (NTRS), NASA Langley Research Center, Underwood, Matthew C.
A test in the Langley 12-Foot Low-Speed Tunnel was conducted as a risk mitigation effort to quickly obtain some low-speed stability and control data on a \"double-bubble\" or D8 transport configuration. The test also tested some configuration design trades. A 5-percent scale model was tested with stabilizer, elevator, rudder and aileron control deflections. This report summarizes the test results.
Topics: NASA Technical Reports Server (NTRS), NASA Langley Research Center, Vicroy, Dan D.
This is a presentation at the UAS TAAC conference. This is an invited session and will focus on UTM Briefing on field test results from TCL 2 and plans for TCL 3.
Topics: NASA Technical Reports Server (NTRS), Johnson, Marcus A., NASA Ames Research Center
Traditional robotic structures have limitations in planetary exploration as their rigid structural joints are prone to damage in new and rough terrains. In contrast, robots based on tensegrity structures, composed of rods and tensile cables, offer a highly robust, lightweight, and energy efficient solution over traditional robots. In addition tensegrity robots can be highly configurable by rearranging their topology of rods, cables and motors. However, these highly configurable tensegrity...
Topics: NASA Technical Reports Server (NTRS), 7dd5ffc2cb7a41c69b397cf19554f85c, Agogino, Adrian K.,...
A design study was undertaken of a carbon fiber primary bulkhead for a large solar electric propulsion (SEP) spacecraft. The bulkhead design, supporting up to 16 t of xenon propellant, progressed from one consisting of many simple parts with many complex joints, to one consisting of a few complex parts with a few simple joints. The unique capabilities of composites led to a topology that transitioned loads from bending to in-plane tension and shear, with low part count. This significantly...
Topics: NASA Technical Reports Server (NTRS), 21f94a70e2574254b2b3bd4956675ca7, Cleveland, OH, United...
Many crew-related errors in aviation and astronautics are caused by hazardous cognitive states including overstress, disengagement, high fatigue and ineffective crew coordination. Safety can be improved by monitoring and predicting these cognitive states in a non-intrusive manner and designing mitigation strategies. Measuring hemoglobin concentration changes in the brain with functional Near Infrared Spectroscopy is a promising technique for monitoring cognitive state and optimizing human...
Topics: NASA Technical Reports Server (NTRS), 66e381d9e5b146beb480b954bbed2ed8, Cleveland, OH, United...
Orbital ATK, in partnership with Mark ONeill LLC (MOLLC), has developed a novel solar array platform, PFC-CTA, which provides a significant advance in performance and cost reduction compared to all currently available space solar systems. PFC refers to the Point Focus Concentration of light provided by MOLLCs thin, flat Fresnel optics. These lenses focus light to a point of approximately 100 times the intensity of the ambient light, onto a solar cell of approximately 125th the size of the lens....
Topics: NASA Technical Reports Server (NTRS), 174c876e4c834577902a070d5b7716b0,...
Ascending steep slopes is often a very difficult challenge for off-road vehicles, whether on Earth or on extraterrestrial bodies. This challenge is even greater if the surface consists of loose granular soil that does not provide much shear strength. This study investigated how the path at which a vehicle traverses a slope, specifically the angle that it is commanded to drive relative to the base of the hill (the angle of attack), can affect its performance. A vehicle was driven in loose sand...
Topics: NASA Technical Reports Server (NTRS), 6a76bbf665e44cbe946e9539fb2578ac, Blacksburg, VA, United...
An analysis is presented of an experimental rig comprising a rotating detonation engine (RDE) with bypass flow coupled to a downstream turbine. The analysis used a validated computational fluid dynamics RDE simulation combined with straightforward algebraic mixing equations for the bypass flow. The objectives of the analysis were to supplement and interpret the necessarily sparse measurements from the rig, and to assess the performance of the RDE itself (which was not instrumented in this...
Topics: NASA Technical Reports Server (NTRS), 348cd7e632514f64bbb26ace80422524, Cleveland, OH, United...
The recent Boundary-Layer-Ingesting Inlet/Distortion Tolerant Fan wind tunnel experiment at NASA Glenn Research Center's 8- by 6-foot Supersonic Wind Tunnel (SWT) examined the performance of a novel inlet and fan stage that was designed to ingest the vehicle boundary layer in order to take advantage of a predicted overall propulsive efficiency benefit. A key piece of the experiment's instrumentation was a pair of rotating rake arrays located upstream and downstream of the fan stage. This paper...
Topics: NASA Technical Reports Server (NTRS), 2578b102f42346baa92b41009797516f,...
The use of Computational Fluid Dynamics (CFD) is gaining momentum within the aeronautical community. A relatively small segment of this community is applying CFD technology in the prediction of VSTOL aircraft performance. An even smaller group of engineers are refining and applying fluid dynamics solvers to the problem of predicting hover performance of helicopter rotors and proprotors designed by rotorcraft advocates. This small group of CFD engineers who are attacking the hover performance...
Topics: NASA Technical Reports Server (NTRS), Harris, Franklin D., Harris (Franklin D.) and Associates
ABS Census 2016, Sex And Gender Diversity In The 2016 Census, Reflecting Australia - Stories From The Census, 2016
Topics: Statistics, Australia, Historical, Multi-subject, Census, Census of Population and Housing, Census...
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0.0
Jun 26, 2022
06/22
Jun 26, 2022
by
Ralph H. John e J. Anthony Blair.
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Lógica Informal: uma visão geral, de Ralph H. John e J. Anthony Blair; artigo publicado na EID&A - Revista Eletrônica de Estudos Integrados em Discurso e Argumentação, Ilhéus, n. 14, jul/dez.2017.
Topic: Lógica Formal. Lógica Informal. Teoria da Argumentação. Esquemas Argumentativos. Recursos da...
Diapycnal mixing plays a primary role in the thermodynamic balance of the ocean, and consequently, in oceanic heat and carbon uptake and storage. Though observed mixing rates are on average consistent with values required by inverse models, recent attention has focused on the dramatic spatial variability, spanning several orders of magnitude, of mixing rates in both the upper and deep ocean. Climate models have been shown to be very sensitive not only to the overall level but to the detailed...
Topics: NASA Technical Reports Server (NTRS), 0a60ecab79e245bea8290ba39b4997f0,...
2
2.0
Jun 24, 2022
06/22
Jun 24, 2022
by
IAES International Journal of Artificial Intelligence (IJ-AI)
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Muscular dystrophy is a rare genetic disorder that affects the muscular system which deteriorates the skeletal muscles and hinders locomotion. In the finding of genetic disorders such as Muscular dystrophy, the disease is identified based on mutations in the gene sequence. A new model is proposed for classifying the disease accurately using gene sequences, mutated by adopting positional cloning on the reference cDNA sequence. The features of mutated gene sequences for missense, nonsense and...
Topics: cDNA, Codon, Codon Usage Bias, Positional Cloning, RSCU
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2.0
Jun 24, 2022
06/22
Jun 24, 2022
by
IAES International Journal of Artificial Intelligence (IJ-AI)
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Network intrusion is one of the growing concern throughout the globe about the information stealing and data exfiltration. In recent years this was coupled with the data exfiltration and infiltration through the internal threats. Various security encounters have been taken in order to reduce the intrusion and to prevent intrusion, since the stats reveals that every 4 seconds, at least one intrusion is detected in the detection engines. An external software mechanism is required in order to...
Topics: Firefly algorithm, Fuzzy approach, SVC placement
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1.0
Jun 24, 2022
06/22
Jun 24, 2022
by
IAES International Journal of Artificial Intelligence (IJ-AI)
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One of the biggest causes of death in the world is a traffic accident. Road damage is one of the cause factors from the traffic accident. To reduce this problem is required an early detection against road damage. This paper describes how to classify road damage using image processing and backpropagation neural network. Image processing is used to obtain binary image consists of a normalization, grayscaling, edge detection and thresholding, while the backpropagation neural network algorithm is...
Topics: Backpropagation neural network, Classification, Image processing, Road damage, Traffic accidents.
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Jun 24, 2022
06/22
Jun 24, 2022
by
IAES International Journal of Artificial Intelligence (IJ-AI)
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Identification of the real risk factors of diabetes is still very much inconclusive. In this paper, fuzzy rules based system was devised to identify risk factors of diabetes. The system consists of five input variables: Body Mass Index, age, blood pressure, Creatinine, and serum cholesterol and one output variable: level of risk. Three Gaussian membership functions for linguistic terms are defined for each input variable. The level of risk is defined using three triangular membership functions...
Topics: Fuzzy rules, Level of risks, Linguistic terms, Patients with diabetes, Risk factors.
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2.0
Jun 24, 2022
06/22
Jun 24, 2022
by
IAES International Journal of Artificial Intelligence (IJ-AI)
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The word “Cloud” refers to network or internet. It is present at.remote location. Cloud computing is a latest mechanism used now-a-days for accessing, manipulating and configuring applications online via internet. It allows users for online data storage, various applications and infrastructure. There are few downsides of cloud computing like in public cloud sharing of data, selected data shared with users of various level without confidentiality and privacy of data. Different methods were...
Topics: Blinded RSA, Encryption, Fuzzy set theory
Les chroniqueurs affrontent Christian Quesada en culture générale TPMP sur les réseaux sociaux : Facebook : https://www.facebook.com/TPMPTV Twitter : https://twitter.com/TPMP Instagram : https://instagram.com/tpmptv/ Source: https://www.youtube.com/watch?v=Fst8OyW6FWU Uploader: Touche pas à mon poste !
Topics: Youtube, video, Entertainment, TPMP, Cyril Hanouna, Touche pas à mon poste, C8, Camille Combal,...
Le live de Evan & Marco dans TPMP ! TPMP sur les réseaux sociaux : Facebook : https://www.facebook.com/TPMPTV Twitter : https://twitter.com/TPMP Instagram : https://instagram.com/tpmptv/ Source: https://www.youtube.com/watch?v=KAmQLigtbk0 Uploader: Touche pas à mon poste !
Topics: Youtube, video, Entertainment, TPMP, Cyril Hanouna, Touche pas à mon poste, C8, Camille Combal,...
Les chroniqueurs imitent les cris d'animaux ! TPMP sur les réseaux sociaux : Facebook : https://www.facebook.com/TPMPTV Twitter : https://twitter.com/TPMP Instagram : https://instagram.com/tpmptv/ Source: https://www.youtube.com/watch?v=dtF-H5huFow Uploader: Touche pas à mon poste !
Topics: Youtube, video, Entertainment, TPMP, Cyril Hanouna, Touche pas à mon poste, C8, Camille Combal,...
Qui aura le meilleur cadeau pour Cyril Hanouna ? TPMP sur les réseaux sociaux : Facebook : https://www.facebook.com/TPMPTV Twitter : https://twitter.com/TPMP Instagram : https://instagram.com/tpmptv/ Source: https://www.youtube.com/watch?v=X0VpomVNwfI Uploader: Touche pas à mon poste !
Topics: Youtube, video, Entertainment, TPMP, Cyril Hanouna, Touche pas à mon poste, C8, Camille Combal,...
Un cours de diction par Michel Leeb pour les chroniqueurs. TPMP sur les réseaux sociaux : Facebook : https://www.facebook.com/TPMPTV Twitter : https://twitter.com/TPMP Instagram : https://instagram.com/tpmptv/ Source: https://www.youtube.com/watch?v=HKx62HJqGJA Uploader: Touche pas à mon poste !
Topics: Youtube, video, Entertainment, TPMP, Cyril Hanouna, Touche pas à mon poste, C8, Camille Combal,...
Maxime Guény, Damien Canivez, Benjamin Castaldi... Qui aura le meilleur scoop ? TPMP sur les réseaux sociaux : Facebook : https://www.facebook.com/TPMPTV Twitter : https://twitter.com/TPMP Instagram : https://instagram.com/tpmptv/ Source: https://www.youtube.com/watch?v=ktagiGarfBY Uploader: Touche pas à mon poste !
Topics: Youtube, video, Entertainment, TPMP, Cyril Hanouna, Touche pas à mon poste, C8, Camille Combal,...
Tacle entre Bourdin et Ardisson : les réactions des chroniqueurs TPMP sur les réseaux sociaux : Facebook : https://www.facebook.com/TPMPTV Twitter : https://twitter.com/TPMP Instagram : https://instagram.com/tpmptv/ Source: https://www.youtube.com/watch?v=IN-03yFnAtc Uploader: Touche pas à mon poste !
Topics: Youtube, video, Entertainment, TPMP, Cyril Hanouna, Touche pas à mon poste, C8, Camille Combal,...
Les supporters du PSG piégés avec un maillot de l'OM par Clément L'incruste. TPMP sur les réseaux sociaux : Facebook : https://www.facebook.com/TPMPTV Twitter : https://twitter.com/TPMP Instagram : https://instagram.com/tpmptv/ Source: https://www.youtube.com/watch?v=l8x28lDp3L4 Uploader: Touche pas à mon poste !
Topics: Youtube, video, Entertainment, TPMP, Cyril Hanouna, Touche pas à mon poste, C8, Camille Combal, Le...
Missouri State Publications
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5.0
Jun 22, 2022
06/22
Jun 22, 2022
by
Missouri Department of Elementary and Secondary Education, Office of Educator Quality
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Recruitment and Retention of Teachers in Missouri Public Schools: A Report to the Missouri General Assembly, December 2017; teachers; teacher workforce; teacher labor force; teacher quality; demographics; teacher shortage; RSMo 161.098;
Topics: Missouri, state government publication
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Jun 21, 2022
06/22
Jun 21, 2022
by
Gaby Dunn
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PodCon 2017 panel“How to Create Straight Characters” Moderated by Gaby Dunn of Bad With Money , with participants: Cecil Baldwin of Welcome to Night Vale Jasika Dunn of Alice Isn’t Dead Brie Williams Often straight characters are defined by their romantic relationship with someone who is a different gender. How do you keep a story from being overwhelmed by the sexuality of your main character? Is it possible to have a straight character in a story without having a romantic relationship in...
Topics: podcon, character creation, lgbtqia+, writing advice, humor
7
7.0
Jun 20, 2022
06/22
Jun 20, 2022
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Frank Macaluso
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The first episode written by more than one person. My thoughts: "Finally, someone I can spread the blame on!" Featured Sketches: - Walken into Danger - The Announcer Catcher Strikes - Darkness in Decatur - Coo-Coo Chantel No. 9 Commercial - Bill the Talking Platypus - A White Privilege Christmas (or, How I Learned to Stop Worrying and Love Hallmark Movies) Originally broadcast on December 1, 2017.
Topics: WJMU, Millikin University, owl stretching time, radio comedy, sketch comedy, radio, comedy,...
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2.0
Jun 20, 2022
06/22
Jun 20, 2022
by
Eesti Metodisti Kirik
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Eesti Metodisti Kiriku ajakiri Koduteel. Nr 4 (127) 2017
Topics: koduteel, emk, eesti, metodisti, kirik, ajakiri, kristlik
Magazine Contribution Inbox
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7.0
Jun 18, 2022
06/22
Jun 18, 2022
by
Asociación de Amigos de Valle-Inclán
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Revista semestral de Estudos Valleinclanianos e Históricos / Revista Semestral de Estudios Valleinclanianos e Históricos / Biannual Magazine of Historical and Literary Studies devoted to Spanish writer Ramón del Valle-Inclán (1866-1936).
Topics: Valle-Inclán, literatura, Vilanova de Arousa, Galicia, esperpento, teatro, historia
You like holiday music? Listen to the Drum Thieves perform their version of The Little Drummer Boy here on IEA!!!
Topics: California, San Bernardino, IEMG - Inland Empire Media Group, Government Access TV, Community...
(San Bernardino, CA) Events and things to do in and around the City of San Bernardino for the week of December 4th to December 10th.. Details and links below Santa Clause Incorporated https://www.facebook.com/events/129770860985179/ Santa at Library http://www.sbcity.org/cityhall/library/default.asp Coffee with a Cop https://www.facebook.com/events/379697012462639/ Sew-Vac https://www.facebook.com/San-Bernardino-Sew-Vac-ETC-561988117154782/ DJ Wayne Event...
Topics: California, San Bernardino, IEMG - Inland Empire Media Group, Government Access TV, Community...
Jamie is all long distance this week but he is here (if not a little jet lagged).We chat all about him falling in love with a girl in South Africa and Francis begins his Italian story. See acast.com/privacy for privacy and opt-out information.
Topic: Podcast
Jamie is all long distance this week but he is here (if not a little jet lagged).We chat all about him falling in love with a girl in South Africa and Francis begins his Italian story. See acast.com/privacy for privacy and opt-out information.
Topic: Podcast
In recognition of World AIDS Day 2017, the City of West Hollywood has produced and released a short video called Getting to Zero. It features an emotionally captivating interview with Jeffrey Rodriguez, Program Manager of the Los Angeles LGBT Center WeHo’s Sexual Health Education Program, and highlights the City’s support for local HIV/AIDS organizations and its vision to build an “HIV Zero” future. This PSA is the first in a series of three short films, which will highlight vital...
Topics: California, West Hollywood, West Hollywood Public Access TV, Government Access TV, Community Media,...
3
3.0
Jun 13, 2022
06/22
Jun 13, 2022
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Troy Trojan Vision
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Join Sarah Drake and Briana Jones as they review the latest news and scores from Troy Trojan athletics.
Topics: Alabama, Troy, Troy University, Troy Trojan Vision, Educational Access TV, Community Media, PEG,...
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Jun 13, 2022
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Jun 13, 2022
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Troy Trojan Vision
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The Trojan Sports Now interview allows you get to know the players, coaches and people behind the scenes who make up Troy University athletics. This week’s guest is Lauren Aldrich.
Topics: Alabama, Troy, Troy University, Troy Trojan Vision, Educational Access TV, Community Media, PEG,...
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Jun 13, 2022
06/22
Jun 13, 2022
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Troy Trojan Vision
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Join Sarah Drake and Briana Jones as they preview upcoming games and events for Troy Trojan Athletics.
Topics: Alabama, Troy, Troy University, Troy Trojan Vision, Educational Access TV, Community Media, PEG,...
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4.0
Jun 13, 2022
06/22
Jun 13, 2022
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Troy Trojan Vision
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The men’s basketball team didn’t have much time to rest after their game Monday night when they played Wednesday in Trojan Arena. TROY TrojanVision News’ Janae Jordan has the highlights.
Topics: Alabama, Troy, Troy University, Troy Trojan Vision, Educational Access TV, Community Media, PEG,...
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Jun 13, 2022
06/22
Jun 13, 2022
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Troy Trojan Vision
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Last week was Thanksgiving, which usually means some big meals. And, if you ate around these parts it probably included some cornbread. That side dish and its ties to this area is what inspired the Pioneer Museum of Alabama to start a festival in its honor. TROY TrojanVision News’ Gabe Gordon has more.
Topics: Alabama, Troy, Troy University, Troy Trojan Vision, Educational Access TV, Community Media, PEG,...
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Jun 13, 2022
06/22
Jun 13, 2022
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Troy Trojan Vision
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Rebuild the Wall is the motto that has been used by the Trojan football team during its recent resurgence. In honor of that success, TROY’s student music group POPulus wrote a song inspired by the motto. TROY TrojanVision News’ Seth Hawk was at Janice Hawkins Cultural Arts park to witness the debut of the new single.
Topics: Alabama, Troy, Troy University, Troy Trojan Vision, Educational Access TV, Community Media, PEG,...
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Jun 13, 2022
06/22
Jun 13, 2022
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Troy Trojan Vision
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TTN TROY TrojanVision News is TROY’s live 30-minute news program produced by our broadcast journalism students, focusing on Troy University, community news and sports, as well as local weather for the Troy Area every class day of the academic year.
Topics: Alabama, Troy, Troy University, Troy Trojan Vision, Educational Access TV, Community Media, PEG,...
