Irwin III R.P.,Planetary Science Institute |
Irwin III R.P.,NASA |
Craddock R.A.,Smithsonian Institution |
Howard A.D.,University of Virginia |
Flemming H.L.,MDA Inc
Journal of Geophysical Research E: Planets | Year: 2011
Some morphometric differences between terrestrial and Martian valley networks may reflect the precursor topography on Mars, particularly impact basins or tectonic slopes. To evaluate these possible influences, we mapped highland watersheds in nine study areas that sample a range of geographic and topographic settings. We collected data including latitude, longitude, watershed length, divide and terminal elevations, watershed relief and slope, slope orientation, and qualitative descriptors including whether a drainage basin was open or closed. The longest valley networks and most overflowed basins occur on preexisting intercrater slopes of 0.1-1°, particularly on north facing slopes associated with the crustal dichotomy. The control of watershed length by earlier Noachian topographic features, which the relict networks did not significantly modify, suggests that the Early to Middle Noachian geomorphic environment was nominally much drier than the later Noachian to Hesperian transition. The distribution of fluvial valleys and likely orographic effects created by the crustal dichotomy suggest that evaporation from the northern lowlands was an important source of atmospheric humidity over short time scales. Much of the highland plateau consists of smaller enclosed watersheds, which (along with cooler temperatures) detained surface water at high elevations, lengthening or impeding the global water cycle. Ponding and evaporation may have partly offset a continentality effect of the highland landmass. Prolonged modification of the intercrater geomorphic surface prior to incision of valley networks included substantial weathering, reduction of relief, and gravity-driven sediment transport, indicating a long-term role for surface water in a transport-limited, arid to hyperarid Noachian paleoclimate. Copyright 2011 by the American Geophysical Union.
News Article | November 29, 2016
Today is #GivingTuesday, and in honor of this global day for giving back, the Muscular Dystrophy Association (MDA) and Jiffy Lube service centers nationwide are proud to announce that more than $5 million has been raised since 2012 through the annual MUSCLE UP!® campaign to help kids and adults with muscular dystrophy, ALS and related muscle-debilitating diseases live longer and grow stronger. “Thanks to continuous support from partners like Jiffy Lube, we are accelerating the progress to find urgently needed treatments and cures for these life-threatening diseases that severely limit strength and mobility,” said MDA President and CEO Steven M. Derks. “Just recently, the first drug for the treatment of one of the most common forms of muscular dystrophy was approved by the FDA and it’s a moment that would not have been possible without the generosity of loyal Jiffy Lube franchisees, service center employees and customers. We are so grateful and look forward to enhancing and continuing our partnership with Jiffy Lube in the years to come.” Each August over the past five years, Jiffy Lube customers have been invited to make a donation of $3 or more to MDA at participating locations in support of MDA programs and families. In return, donors receive a MUSCLE UP! savings book containing more than $100 in savings from Jiffy Lube and other national retailers such as Men’s Warehouse® and Office Depot®. “The success of the MUSCLE UP! campaign is driven by the passionate support of Jiffy Lube franchisees who are deeply committed to giving back to their communities,” said Denny Reiner, director of marketing for Jiffy Lube International. “We’re grateful to our franchisees, their employees and loyal customers who continue to show their passion for MDA to help bring strength, independence and life to the courageous families fighting these diseases.” The MUSCLE UP! campaign draws a parallel between the body’s muscular system and a vehicle’s engine structure – both require care and maintenance to optimize their performance and ensure safety and comfort. Funds from the annual campaign help provide services for MDA families nationwide, including a free week-long summer camp for kids which opens opportunities to discover new interests, gain self-confidence, make life-long friendships and experience the independence of being away from home in an environment where barriers do not exist. Contributions from the campaign also will help MDA fund groundbreaking research across diseases and provide individuals with life-enhancing programs and support services, including state-of-the-art multidisciplinary care at a nationwide network of more than 150 MDA Care Centers. About Jiffy Lube Jiffy Lube International, Inc. (“Jiffy Lube”), with more than 2,000 franchised service centers in North America, serves approximately 20 million customers each year. Jiffy Lube pioneered the fast oil change industry in 1979, providing customers with fast, professional service for their vehicles. Headquartered in Houston, Jiffy Lube is a wholly owned, indirect subsidiary of Shell Oil Company. Visit http://www.JiffyLube.com to learn more about Jiffy Lube and vehicle care. About MDA MDA is leading the fight to free individuals — and the families who love them — from the harm of muscular dystrophy, ALS and related muscle-debilitating diseases that take away physical strength, independence and life. We use our collective strength to help kids and adults live longer and grow stronger by finding research breakthroughs across diseases; caring for individuals from day one; and empowering families with services and support in hometowns across America. Learn how you can fund cures, find care and champion the cause at mda.org.
News Article | March 1, 2017
CHICAGO, March 1, 2017 /PRNewswire-USNewswire/ -- Tens of thousands of retailers nationwide have rallied together to raise funds to help the Muscular Dystrophy Association (MDA) save and improve the lives of kids and adults with muscular dystrophy by participating in the 35th annual MDA...
Sabry R.,Radar Applications and Space Technologies |
Vachon P.W.,Radar Applications and Space Technologies |
Cole M.,MDA Inc
IEEE Geoscience and Remote Sensing Letters | Year: 2011
Local surface slope variations can impact synthetic aperture radar (SAR) imagery by changing the perceived polarization state of the imaged region. Correction of the topography-induced effects results in more accurate evaluation of polarimetric parameters. In this letter, the polarization-orientation angle (POA) correction is analytically estimated for a general polarimetric-SAR scenario operating at a known squint angle based upon a digital elevation model, permitting correction of the topography-induced effects. It can also aid to identify a squint angle that can counteract the effect of a specific POA rotation. Model parameters are demonstrated through a software implementation. © 2010 IEEE.
Antifaev J.,MDA Inc
ACRS 2015 - 36th Asian Conference on Remote Sensing: Fostering Resilient Growth in Asia, Proceedings | Year: 2015
Maintaining situational awareness is a key challenge for disaster management officials during typhoon-induced floods. As flooding begins, quickly developing a picture of which areas are affected is key. However, optical satellites are of limited value during this stage since cloud still obscures the area. Satellite RADAR is ideal for this application, since RADAR images can be taken through cloud without any negative effects. Using RADAR-equipped satellites such as RADARSAT-2, broad-area imagery can be acquired within hours of the onset of floods, and used to generate flood maps that enable officials to understand which population centres, infrastructure, and transportation routes are affected. This information can enable greatly improved effectiveness for disaster response efforts. Key considerations for the use of satellite RADAR in flood management include satellite acquisition planning, imaging beam mode selection, flood map creation using change detection algorithms, and maintaining a "dry season baseline" for comparison to images during floods that enables automated flood map generation. Advances in satellite RADAR such as the new Extra Fine beam mode on RADARSAT-2 now enable larger areas to be covered at higher resolution, making it possible to support more detailed disaster response planning over very large areas.
Staples G.,MDA Inc
Society of Petroleum Engineers - SPE Arctic and Extreme Environments Conference and Exhibition, AEE 2013 | Year: 2013
Since the launch of RADARSAT-1 in 1995 and RADARSAT-2 2007, these SAR sensors have played a pivotal role as a key source of information for the production of ice charts and the provision of near-real time data to support shipping. The RADARSAT-2, wide-swathScanSAR modes coupled with dual polarized imaging capability are ideally suited for ice mapping applications. The space segment is augmented with a ground segment that has been designed to meet the needs of rapid data processing and delivery of ice information. The wide swath-width combined with high-latitude areas-of-interest provides multiple imaging opportunities per day. Ice-type discrimination, forexample first-year versus multi-year ice, canbe achieved by using HH polarized data, and HV polarized data can be effectively used for ice-water discrimination. To meet the needs of end-users who require ice products in near-real time, MDA hasdeveloped automated ice-water discrimination algorithms and techniques to estimate ice pressure. RADARSAT-2 data are routinely used to support ice-breaking operations, commercial shipping, seismic exploration, and offshore oil drilling. A key requirement to support these activities is to provide the data in an interpretable and interoperable format that best suits end-user needs. Copyright 2013, Society of Petroleum Engineers.
Rembala R.,MDA Inc
Proceedings of the International Astronautical Congress, IAC | Year: 2015
The amount oflarge orbital debris, from spent upper stages to non-operational satellites, is ever growing and may eventually pose a threat to the economic viability of high-value orbits. Satellites need to perform ever-increasing numbers of collision avoidance maneuvers, and the risk of a collision is increasing. Space Agencies are now working on technologies and developing missions to address the threat through Active Debris Removal (ADR). With the wide variety of objects that currently populate the orbital debris environment, one of the key challenges facing these missions is determining exactly how to safely grasp and apply the necessary forces to a target in order to relocate it into a graveyard or atmospheric re-entry orbit. In general, methods proposed in ADR missions have included rigid capture approaches using a robotic arms or appendages, and flexible approaches using tethers, harpoons, or nets. While each approach has its respective merits, the use of a robotic arm provides the benefit of controllability due to its ability to achieve a rigid link between the target debris and the servicing spacecraft after capture. While Canada has been a world leader in robotic technology capable of performing the capture of spacecraft for three decades, through the highly successful Canadarm, International Space Station, and DARPA Orbital Express mission robotics, to date robotic free-flyer captures in space have only been achieved on '"prepared" spacecraft. A prepared spacecraft is one that has been designed to aid and simplify robotic tasks by including features such as a grapple fixture that can be captured by a robotic arm. Since none of the orbital debris threatening the operational on- orbit assets have been designed with on-orbit capture or servicing in mind, their robotic capture must be achieved using a structural feature naturally available on the targets, such as the Launch Adapter Ring. This paper presents an overview of MDA's Launch Adapter Ring Capture Tool. Designed and built through the support of the Canadian Space Agency, it is a purpose built robotic tool designed to provide the key technology necessary to address the challenges associated with autonomously grasping an unprepared and uncooperative spacecraft with a robotic arm. The paper justifies the need for the technology, outlines the key driving requirements, provides the concept of operations for its application, and summarizes the integrated testing performed to validate and demonstrate the design of MDA's Technology Readiness Level 4 engineering development unit and its applicability to upcoming servicing missions. Copyright © (2015) by International Astronautical Federation All rights reserved.
MDA Inc | Date: 2012-12-11
suite of imagery and database products in the field of geographic reference and land cover information, namely, an electronic database of computer-enhanced satellite images covering the entire land area of Earth recorded on computer media and downloadable photographic images covering the entire land area of Earth provided electronically.
News Article | June 2, 2015
DUTSE—Governor Muhammad Abubakar Badaru of Jigawa State has sacked the Emir of Dutse, Alhaji Nuhu Muhammad Sanusi as the chairman of Dutse Capital Development Authority, DCDA. This was contained in a statement by Government House in Dutse the state capital. According to the statement, other appointees who were relieved of their positions included all non-statutory or non tenured board members and chairmen of all Jigawa State Ministries, Departments and Agencies, MDA’s, including the Pilgrims Centre officers. Local government secretaries and education secretaries of the 27 local government councils were also affected were local government secretaries who were directed to handover to their respective directors of personnel management, DPM, with immediate effect. The emir of Dutse was last month appointed board chairman of DCDA by former Governor Sule Lamido. The appointment was seen to be controversial as most people in the state believed that the emir pressurised Lamido to offer him the slot, saying it amounted to greed.
News Article | July 6, 2015
By Ochereome Nnanna ALL over the democratic world, the term: “change” is a pet mantra employed by opposition parties. “Continuity” is the ruling party’s counter to this battle cry. After eight years of George Bush (II) and the Republicans in America, Barack Obama of the Democratic Party not only campaigned for “change”, he styled his own: “the change we need”. In other words, it was not just a desire for the warmongering pro-rich GOP to be rested by the electorate, it was time to introduce Obama’s libertine new deals, look more inward and accommodate the interests of the New Americans and the middle class and minorities. When the All Progressives Congress (APC) was campaigning for “change”, not many people bothered to pin them down, especially their presidential candidate, to explain what “change” meant. Buhari only told us that he would fight corruption, provide security and diversify the economy. Jonathan fought corruption with technology to get rid of ghost workers, yet there were widespread allegations of corruption against his government. He battled Boko Haram, a job he almost completed before handing over, yet thousands of Nigerians had lost their lives, and hundreds of thousands more were dislodged from their communities. He diversified the economy, revived agriculture and infrastructure and made Nigeria the largest economy in Africa and its most favoured investment destination; yet majority of the citizens did not feel the impact of these efforts. So, what manner of change would Buhari create to make a difference? Right now we have witnessed a major change, and we have been promised more changes. But are they “the change we need”? The change we have seen is that the APC has booted out the regime of the Peoples Democratic Party (PDP’s) Goodluck Jonathan. That was earth-shaking, as no opposition party has ever defeated a sitting president seeking re-election in Nigeria and the continent as a whole. But is that the change we need? Regime change is only a means to an end, not an end in itself. You can change a regime and later bite your finger in regret. The second change, which the Buhari Presidency appears to be angling for, is to reduce the number of ministries, departments and agencies of the federal government to save cost. Unless he will also follow up by retrenching the thousands of workers in those MDA’s (which will create bigger problems), he will not be able to reduce the cost of governance. It will only lead to crowded desks populated by redundant government salary drawers; a journey to nowhere. Part of the Buhari change, we hear, includes going after corrupt officials of the Jonathan era to retrieve stolen funds. We have seen that before, even under Buhari. He did the same in 1984/85. He also sent hundreds of politicians to long term jail terms. But that did not buoy up government coffers by much. It did not stop the shortage of essential commodities in shops. That draconian approach was possible only because he ruled with decrees. It is not possible today. The courts, the legislature and fellow political stakeholders will frustrate the effort. Look at what happened to efforts to arrest Senator Buruji Kashamu. Just a few days ago, former Minister Femi Fani-Kayode, was discharged and acquitted of money laundering charges levelled against him by the Economic and Financial Crimes Commission (EFCC). The only governor that is in jail for corruption today is Mr. James Ibori of Delta, and that is because he made the mistake of fleeing abroad. The rest are in the Senate or at their palatial homes enjoying their loots. I pity those who see Buhari as a Superman and Spiderman rolled into one. Let us even assume that Buhari is able to retrieve billion of dollars from the looters. Is it not the same governors and politicians that will spend and eventually re-loot the money? Where is “Abacha loot” brought back under Obasanjo’s regime? Any disclosure of how it was spent? Did it stop politicians from looting? Did it stop even APC governors from deeping their hands into their state treasuries to bankroll Buhari’s campaign, thus plunging them into penury and salary arrears? We wait to see how Superman/Spiderman Buhari will deal with that issue, as these chaps are now fervently crowding around him to be rewarded with juicy federal posts. What I am saying is that if “change” means removing Jonathan from power, cutting the number of MDAs, getting looters to return stolen funds and possibly jailing them, it will not lead to the change we need. It is a cosmetic change because it does not address the root causes of corruption, poverty, economic wretchedness in the midst of plenty, mass unemployment and insecurity. If Buhari refuses to embrace “the change we need” he will fail woefully after his Superman/Spiderman stunts as he did in 1984/85. The corruption, insecurity and economic rubble will be multiplied by the time he leaves office in four years. The North will simply discard him and float another platform to enable them get another eight years, and the journey to nowhere will continue. The “change we need” is not a “materialisation of my inventive genius” as Bambulu grandiloquently claimed in John Ene Henshaw’s hilarious play: This is Our Chance. It is not, as the worn cliché puts it, “rocket science”. It is an old idea which frightens the Nigerian ruling class. It is an inalienable truth which the class and region that Buhari belongs to, avoid like the plague because it will force our leaders to think and work. It will take away their parasitic, unearned and enslaving privileges and their right to use nepotism to populate the federal government with people of questionable competence from their part of the country as Buhari is already doing after only a few appointments. That change we need is constitutional restructuring and establishment of “true federalism”. It involves the decentralisation of the powers of the federal government. The only way to cut down the size of the MDAs without mass retrenchment of workers is to transfer most of the powers of the federal government to the states or more preferably, the geopolitical zones. The Federal Government will exist to defend the nation and guarantee the citizenship rights of its people, while maintaining common services and taking charge of our international relations. The economy should largely be managed by the states (or more preferably, the geopolitical zones) and the private sector, which will pay taxes and royalties to the federal government to look after all of us. I wonder why Ahmed Tinubu and his political platform went into a merger with Buhari and his acolytes without agreeing on this “true federalism” principle, which is an enduring political philosophy of the Awoist Yoruba, and for which the Igbo fought and lost the civil war. The only way that the North/South West alliance in the APC can last is for the Party to accede to the decentralisation of power. If that happens, the APC will become a darling of even the South East and South-South which cloak “true federalism” in the toga of “resource control”. There is no manner of “good governance” that can thrive on the neocolonial structure which the military set up to enable a section of the country dominate and freeload the political and economic resources of the nation. No sustainable good governance can be possible under a Spiderman/Superman arrangement because after a little while, “mere mortals” will be back in charge, and the journey to nowhere will continue.