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San Francisco Mayor Ed Lee On Shifting Tech Hubs Into Urban Centers [TCTV]
For years, companies have been known to flock more to SF's southern suburbs or to San Jose some 50 miles south, where space is often cheaper and the tax situation has historically been more lax. But surrounded by tech-focused supporters such as Ron Conway and Marissa Mayer, Ed Lee has made it a major priority of his administration to bring more technological innovation and startup businesses into the city of San Francisco.Neck Support Pillows naturopaths sydney cheap nintendo dsi Wedding Tent Rental Toronto
Budget Travel: The Inexpensive Way to See the World | How to Save ...
Planning on taking a vacation? Getting stressed out on your travel plans? We all deserve to take a break from the bustling and bustling city life before it affects our health. Now for some people they think that travelling is such an expensive leisure especially when you start to think about plane tickets, accommodations and pocket money for food, tours and buying souvenirs. The idea of spending quite a lot for a trip is normally one of the reasons why some are not keen to travel and see different places.
Good thing budget travels are becoming more and more popular and it has helped boost the global tourism industry. This is very common in Asian countries with airline companies offering cheap fares and the increase in number of budget accommodation options such as hostels. Budget travelling has been around for a long time but recently became more in demand due to the global financial crisis. Yes, it is possible to enjoy travelling without having to break your pocket. Here are some tips to get you started with budget trips:
1. Avoid travelling during the peak season.
People will flock the beach and the outdoors during the summer time due to the hot weather. Resorts and hotels are cashing on this by raising their rates especially during the weekend. If you are making travel plans avoid going during peak seasons. You?ll save more by travelling during off peak since accommodations are relatively lower and some places even offer promotional discounts during this season in order to get more people to travel. Off season traveling is also ideal because there are fewer crowds. You will be able to see more places or enjoy their facilities as your waiting time is cut short.
2. Enjoy the free stuff.
When travelling to a foreign country, consider going to sites with little or no entrance fee. Free spaces such as parks are a great place to relax and meet local people. Leisure activities and programs are often held on such grounds and you can sit down, enjoy and have fun without having to spend a single cent.
3. Use the Public Transportation.
Rather than having to spend on taxi fares when going around the city, take the bus or the subways instead. Public transportation is affordable and in most cases highly efficient too. A lot of countries have well organized transportation system. Grab a city map and start planning your tour routes.
Give yourself plenty of time when planning for a trip. Compare rates from different websites and choose the one that will provide you with more savings.
About the Author:
Ally is a freelance writer who enjoys traveling during her free time. She is currently working for l?n penge nu a project that provides information about loan money now.
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Nats continue mastery of Phillies
By DAVID GINSBURG
AP Sports Writer
Associated Press Sports
updated 3:59 p.m. ET May 5, 2012
WASHINGTON (AP) - During a nerve-racking season in which half their games were decided by one run, the Washington Nationals enjoyed a rare blowout that manager Davey Johnson begrudgingly acknowledged was "a laugher."
Gio Gonzalez allowed one run over seven innings and the Nationals hit a season-high three home runs in a 7-1 victory over the Philadelphia Phillies on Saturday.
"We haven't won one of those in a while," Johnson said. "It's not quite what I call a laugher. That's a smiler. We were hanging around, then we got a lead and added to it. It got to be a laugher."
The first-place Nationals had played 13 one-run games, including three in a row, coming into Saturday's game against the depleted Phillies, who are without injured sluggers Ryan Howard and Chase Utley. After falling behind 1-0, Washington used a four-run fifth inning to take control.
Former Phillies star Jayson Werth hit a three-run drive, Chad Tracy connected with a man on and Ian Desmond had a solo shot for the Nationals, who have won seven straight over Philadelphia dating to last year. By taking the first two games of the three-game set, Washington improved to 8-1 in series play this season.
The seven runs matched a season high for the Nationals, who have won four straight, and the 15 hits were their most in a game this year.
"It was a good day," Desmond said. "It was a nice day to go out and hit some balls on the barrel. If we play another one-run game tomorrow, so be it. We're just trying to collect wins."
Rick Ankiel had three hits in a second consecutive game, and Tracy and Steve Lombardozzi also had three hits apiece for Washington. Rookie Bryce Harper went 0 for 4 with a walk, dropping his batting average 55 points to .261.
Gonzalez (3-1) gave up four hits, struck out seven and walked one. Acquired last December in a trade with Oakland, the left-hander has a 1.72 ERA in six starts this season and has yielded only three runs over the last 27 innings.
"Outstanding effort against a good-hitting club," Johnson said. "He made it look easy."
Gonzalez also played a key role at the plate, sparking the pivotal fifth inning with his second career hit, a leadoff double that set the tone for the afternoon and preceded Werth's third homer of the season.
"It was fun to see these guys swing the bat," Gonzalez said. "You could see there was life in our dugout. All I was trying to do is keep us in the game and let our hitters go out and do their job."
Philadelphia starter Vance Worley (2-2) gave up five runs and 11 hits in six innings. The right-hander was 2-0 with a 0.90 ERA in his previous three starts, and in this one he kept the Nationals at bay through four innings. But his inability to retire Gonzalez in the fifth proved to be his undoing.
"When he started the game I thought he had good stuff. Then he started making mistakes," Phillies manager Charlie Manuel said. "He had trouble getting Gonzalez out."
Carlos Ruiz drove in the lone run for the Phillies, who have lost six straight against left-handed starters and now trail the Nationals by 5 1/2 games in the NL East.
"They play like they have a chip on their shoulder," Philadelphia's Hunter Pence said.
"They got good starting pitching and guys that can hit," Manuel said. "That's why they are in first place."
Philadelphia took a 1-0 lead in the fourth. Shane Victorino hit a leadoff double, advanced on a fly ball and scored on a sacrifice fly by Ruiz, his team-high 19th RBI.
In the bottom half, Tracy doubled with one out and advanced on a two-out infield single before Wilson Ramos bounced out. It was the fourth straight inning that Washington got a runner in scoring position before Worley worked out of the trouble.
The Nationals broke the trend in a momentum-turning fifth that began when Gonzalez lined a 3-2 pitch into the gap in right-center. Prior to the hit, the pitcher was 1 for 17 in his career at the plate.
"It bothered me, but he had a good at-bat," Worley said.
With runners at the corners and one out, Harper hit a fly ball to left that was too short for Gonzalez to tag up. Two pitches later, however, Werth ripped a 1-0 pitch over the left-field wall into the Washington bullpen.
"He beat me. All there is to that," Worley said.
Tracy and Danny Espinoza followed with singles and Ankiel hit a run-scoring double, but Tracy was thrown out at the plate on the back end of the play.
Desmond homered in the sixth to make it 5-1 and Tracy hit his second of the season in the seventh.
NOTES: Nationals 3B Ryan Zimmerman (shoulder) expects to be activated from the disabled list on Tuesday. ... The Phillies send Cole Hamels (3-1) to the mound Sunday night in the series finale. Jordan Zimmermann (1-2) will pitch for Washington. ... The three HRs were tied for the most yielded in a game by Philadelphia this season.
? 2012 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.
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Slumping Pujols angry about getting day off
ANAHEIM, Calif. (AP) - Albert Pujols, stumbling aimlessly through the longest home run drought of his 12-year career, was not in the Los Angeles Angels' starting lineup for the first time this season.
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Supplementing Your Present Income By Joining An Internet Affiliate ...
Posted on May 5th, 2012
Numerous business people are interested in joining an affiliate marketing program to supplement their current revenue. Most of these business individuals are willing to venture into affiliate marketing, because they?re not required to create their own product. However, they only need to make their own web site and search for a item that they can comfortably promote on their site.
If you are aiming to join an affiliate program and take advantage of the numerous affiliate opportunities. It?s essential that you have an efficient website that has the capability to generate a considerable amount of traffic. So you have to utilize the most effective Seo methods in optimizing your web site ? making it more ideal to promote the products and services of the affiliate company.
If you have your own web site, then you might want to earn an revenue by monetizing it. There are numerous ways of producing income using your web site. You can sell your products and services by promoting them on your web site; it?s also feasible to post paid advertisements on your site. However, the quickest method of making money online is through an affiliate marketing program.
In order to become a productive affiliate marketer, it?s imperative that you choose a credible affiliate company. So, before you decide on becoming an affiliate of a particular company, it is important that you carry out a research and figure out the track record of that affiliate company. You must ensure that they offer high quality products that you can comfortably advertise on your website.
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On eve of Putin's inauguration, protest and reaction bigger than expected
Thousands of people marched through central Moscow Sunday, on the eve of Vladimir Putin's inauguration for an unprecedented third term as Russia's president, many chanting angry slogans such as "Putin out!" and "Putin is Russia's shame!"
Unlike the mostly peaceful and even good-natured mass rallies of recent months?Sunday's march ended in violence and hundreds of arrests as heavily-armored, tear gas-firing riot police moved in on a contingent of protesters who were attempting to cross a bridge that police had barricaded.?The independent Moscow radio station Ekho Moskvi reported that police arrested 400 people.?
Police put the number of protesters at 8,000, but organizers claimed that more than 20,000 people came out to march down a major Moscow avenue in the warm spring sunshine to Bolotnaya Square, within sight of the Kremlin, where they were to hear a rock concert and speeches from key opposition leaders.
The crowd was far larger than either organizers or police had anticipated; last week authorities granted a permit for just 5,000 participants. Many had predicted that the middle class pro-democracy movement would wane following Mr. Putin's decisive electoral victory in March, and fractious opposition leaders had already begun blaming one another for the decline in public support.
But anti-Putin Muscovites, organizing themselves through Facebook and the Russian-language VKontakte rather than through opposition parties and groups, appear to have handed everybody another surprise by showing up in numbers that journalists on the scene agreed were closer to the 20,000 estimate.
RECOMMENDED ??Putin inauguration: World view of a Russian feeling dissed
Among those reportedly arrested following the clashes with police were key opposition leaders Sergei Udaltsov, Boris Nemtsov, and anti-corruption blogger Alexei Navalny.
"No one expected it to end like this; the police reaction was way too harsh," says Alexei Larionov, an economist who says he hasn't attended a protest since 1991. "I got hit myself. It certainly looked like the police were under orders to be really tough. I think that had a lot to do with Putin's inauguration tomorrow. They wanted to give us a clear warning. But I don't think protests will stop because of this. This will continue."
Dissent from 'managed democracy'The wave of protests broke out in December, shattering Russia's facade of pro-Kremlin social harmony, and throwing up a new generation of political leaders whose roots are in civil society rather than the strictly-orchestrated political system of "managed democracy."
The reaction of the authorities was not to crack down with police violence, as in the past, but to sponsor a raft of political reforms designed to take some of the wind out of protester's sails. They included an easing of requirements to officially register a political party, a return to direct elections for regional governors ??albeit with Kremlin "filters" to prevent surprises ? and possible establishment of a public TV channel independent of state control.
"In many ways these reforms are real, and they have gone some way to revitalizing politics in this country," says Boris Kagarlitsky, a long-time left-wing activist and head of the independent Institute for Globalization and Social Movement Studies in Moscow.
IN PICTURES: Putin on a show
Another effect of the protests was to force Putin to adopt a populist economic program, including billions of dollars worth of new social benefits and an extremely expensive pledge to rebuild and reequip Russia's armed forces?."Putin started backing off his promises immediately after the elections," says Mr. Kagarlitsky. "Now the government says it will cut social spending, raise the pension age, and proceed with an educational reform that's actually going to turn schools into commercial enterprises. We are facing the complete privatization of the social service sector in coming years, and this is going to engender enormous protests.... It's not the middle class anymore, but Putin's own political base that's going to move into opposition."
'Maddening for thinking people'But it has been the Russian middle class ? young, educated, urban professionals and business people, who make up about 15 percent of the population?? who've been coming into the streets of Moscow for the past few months to shout anti-Putin slogans, but also to argue for fair elections, rule of law, and a genuine crackdown on corruption. On Sunday, police gave them a whiff of tear gas.
"The authorities are behaving in a really arrogant manner, and it's really getting maddening for thinking people," says Andrei Petrov, a student at the prestigious Institute of Foreign Relations in Moscow, which trains Russian diplomats. "Nobody wants to split the country, or cause a disaster, but laws should be the same for everybody....
"Even if we can't change the country's leadership, we can have these public protests and show we have our positions and we're going to stick to them. These protests will continue."
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Egypt parliament limits future military trials
CAIRO (AP) ? Egypt's Islamist-dominated parliament on Sunday approved a ban on the country's next president from sending civilians for trial by military tribunals, but preserving that power for the military itself.
The measure would curb the powers enjoyed by the deposed President Hosni Mubarak, who used the military tribunals to refer opponents, especially Islamists.
The law retains the current wide-ranging powers for the military to send civilians to military tribunals. Activists have been campaigning against that practice by the ruling generals who took over from Mubarak in February last year.
More than 10,000 civilians have been referred to such tribunals since then, some for criticizing the military.
On Saturday alone, more than 300 civilians were sent for military prosecution following violent demonstrations near the Defense Ministry in Cairo. They face accusations of attacking troops and disrupting public order.
Late Sunday, the military renewed an overnight curfew in the area of the ministry for a third day.
Human Rights Watch researcher Heba Morayef said the new measure fails to protect civilians and civilian justice system from the military.
"It is an attempt to limit the next president's power, but does nothing about the relations between civilians and military," she said. "The newly elected civilian authority is not responding to one of the main demands on the streets to protect the rights of civilians."
Another lawyer, Ragia Omran, who has been campaigning for ending the military trials, said the measure was a "disappointment," because there were consultations with lawmakers to limit the military's jurisdiction.
"The (lawmakers) don't care about the public opinion. It is only good for them," she said.
The measure allows those tried under Mubarak to appeal the verdicts before a military tribunal. This includes some of the senior Muslim Brotherhood leaders.
Brotherhood lawyer Abdel-Moneim Abdel-Maksoud said the law intends to "curb the powers of the next president" to send civilians to military courts for a wide variety of offenses.
The military itself still has that authority, he said, "but now the door is no longer open for the next president" to do so.
Egyptian activists and political groups have grown critical of the military management of the transition period, and have sought to curb the powers enjoyed by the military since its 1952 military coup. Since then it was been the source of all of Egypt's leaders.
Later this month, Egyptians vote for the first time to elect a president without a military background. But many believe the military is still trying to preserve its economic interests and political clout by backing a presidential candidate or introducing legislation that protects its status.
Morayef questioned the Brotherhood's concession on military trials despite public pressure.
"The timing is interesting, when the Brotherhood is saying it is in the middle of a battle with the military, (but) in no way are they pushing back against military authority," she said.
The original law, in place since 1966, allows the military to try any crimes committed against military personnel, on military grounds or "against the security, safety or interests of the Armed Forces."
The tribunals also have jurisdiction over any site operated by the military. Egypt's military has extensive economic interests and employs civilians, making them liable to military jurisdiction.
Rights lawyer Ahmed Ragheb said the new measure also preserves the right of the military to try its retired personnel for financial and other crimes, a measure adopted after the uprising that toppled Mubarak.
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Ping Monitor Professional 4.7.2
EMCO Ping Monitor ($49) checks the availability of systems on a network by sending pings at regular intervals and analyzing the responses from each machine. Administrators monitoring multiple servers and concerned about uptime often write shell scripts to keep track of these statistics. Ping Monitor performs the same task in an easy-to-use graphical interface but doesn?t really offer any advanced features or capabilities.
IT administrators use the application in an ?autopilot? mode to supervise network connections to critical equipment. The scheduling feature allows administrators to schedule times when certain machines don?t need to be monitored, such as during scheduled maintenance windows or when they are powered off on weekends, without having to stop the monitoring process for other machines.
While the software needs to be installed on a Windows machine (both 32-bit and 64-bit versions of Windows 7, Vista, XP, and Server), Ping Monitor can monitor any machine regardless of the operating system, provided it can respond to ping (ICMP echo) requests. Ping Monitor is available in a free version as well as a Professional version. The free version is limited to tracking up to five machines while the Professional version is unlimited. A 30-day evaluation of Ping Monitor Professional is available online.
Using Ping Monitor
A Windows host monitoring tool, Ping Monitor tracks connections to multiple network hosts by simultaneously sending pings (ICMP echo requests) to all the machines in its "to watch" list. It detects changes in machine status and analyzes responses to calculate connection statistics, such as high, low, and average response times, response time deviation, uptime, and other values to evaluate connection quality and stability. The monitoring interface displays all scanned IP addresses with the associated information in a long list.
If a host doesn't respond to multiple requests, Ping Monitor flags the machine and sends out notifications about the outage. The message can be sent by email, displayed in the Windows system tray, or an audio alert. The non-responding machine is also highlighted in red in the interface.
The main interface feels a little crammed, as it displays the IP addresses being monitored, Application Log, details about the host, and actions to take when a machine doesn't respond, all in one single view. It's possible to turn off the log and host details pane, or rearrange them. Double-clicking on an IP address opens up an edit window to modify notification and monitoring rules.
Ping Monitor allows users to enter individual IP addresses, hostnames, or IP ranges that need to be monitored. Network administrators can then customize the notification messages on a per-host or per-event basis. For example, administrators can configure Ping Monitor to change who would be alerted by email depending on which host encountered the issue. Or send an email message first, and then follow up with an SMS notification if the computer remains offline.
The monitoring results can also be formatted to use outside the tool. The tool supports XML and CSV formats.
Setting Up Ping Monitor
To get started, all I had to do was enter the IP addresses of the servers and desktops running on my test network in to the tool. Ping Monitor supports a list of IP addresses, an IP range, or even hostnames. Once I entered the list of machines, I hit the Start button on the application?s toolbar. Ping Monitor pinged systems at regularly spaced intervals and displayed basic statistics, such as how long the tool had been monitoring that address, the machine?s uptime, and the average response time. If the server is not available, the tool displays that address in red.
I turned on a few machines while the tool was already running. Before I turned them on, I noticed the corresponding IP addresses were highlighted in red within the interface. As soon as the machine was online, the screen reflected the change automatically by removing the red highlight.
I could tweak most of the settings, such as configuring the ping itself, including its timeout period, packet size, and time to live (TTL) value. I could create a schedule to specify which days of the week (and time of day) the machines should be pinged. I could also design a customized list defining what the machine should do when it didn't respond to a ping request, who to contact in case of an outage, and how to send out the notifications. In the Professional version, every single one of these settings can be customized for each host.
Monitoring host connectivity can be handled easily with a shell script. Ping Monitor doesn't have any advanced features to differentiate it from a script. If the network is complicated or has machines that are regularly offline for maintenance reasons, network administrators would find the ability to automate when the machines are being monitored and for how long a true time-saver.
Ping Monitor Under the Hood
Network administrators can customize the scripts that take into account scheduled maintenance windows and rules for each host and automate the entire process. For managers monitoring multiple machines, Ping Monitor is handy for monitoring what machines are online and notifying appropriate users when something goes wrong. For environments where machines don't need to be monitored on different schedules and simpler networks, Ping Monitor seems a little redundant since a shell script and a cron job would accomplish the task just as well.
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Happy 23rd Birthday, Chris Brown!
Chris Brown turns 23 on this wonderful Cinco de Mayo.
We'd buy him a margarita, but maybe an O'Douls would be better, given the potentially negative effects of alcohol on people prone to ... you know.
Just kidding ... sort of. Anyway, happy birthday CB!
With his songs burning up the charts, he's certainly beaten the haters' expectations after nearly torpedoing his own career by beating ... you know.
Point being, man is he hot right now!
Chris Brown on the cover of his Webdings-themed new album.
All joking aside, the man's future has never looked brighter. As a tribute to his very special day, check out our pages devoted to Chris Brown videos and click to enlarge some of our absolute favorite Chris Brown pictures below.
And in less controversial news, it's also Adele's birthday today! Goooo May 5!
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DPRK jamming GPS signals, says Seoul
Interference is causing problems with Global Positioning System (GPS) signals around Seoul and the South Korean government says North Korea is to blame.
GPS signals became unreliable on April 30 and more than 250 commercial aircraft has to rely on other navigation methods, according to several local media reports.
A spokesman for the?Korea Communications Commission told The New York Times. ?We believe that the jamming signals originated in North Korea,? but a different spokesman told AFP that North Korea had been confirmed as the source.
?We?ve confirmed the?GPS jamming signals have been stemming from the North,? AFP quoted KCC deputy director Lee Kyung-Woo, as saying. There were no deeper technical details of the jamming or how the KCC confirmed the source.
Jamming is the act of broadcasting a signal on the same channel as the intended target service so as to confuse or interfere with reception.
The problems prompted?South Korean aviation authorities to caution pilots to ?exercise extreme caution when using GPS.?
CAUTIONARY INFORMATION FOR AIRCRAFT OPERATING IN INCHEON FIR: PILOTS HAVE REPORTED THAT GPS SIGNALS ARE UNRELIABLE OR LOST INTERMITTENTLY IN INCHEON FIR. EXERCISE EXTREME CAUTION WHEN USING GPS. 28 APR 00:32 2012 UNTIL 03 MAY 15:00 2012 ESTIMATED. CREATED: 28 APR 00:34 2012.
GPS signals in Seoul and near the North Korean border have suffered interference before.
Jamming signals apparently traced to Kaesong?disrupted?GPS communications in August 2010?and interfered with cell phone navigation in March 2011. The second incident was suspected to be caused by a mobile jamming unit and?occurred?during joint U.S. and South Korean military exercises.
Later in 2011 a report to the South Korean parliament said the DPRK had imported??about 20 communications and radar jamming devices from the old Soviet Union.? Such units mounted on vehicles had been deployed near the border and disrupted GPS signals within a range of between 50- and 100 kilometers, the report said, according to a Yonhap at the time.
Related posts:
- Report: DPRK again jams GPS signals
- North Korea Appears Capable of Jamming GPS Receivers
- Report: Stronger GPS jammer developed
Using nanoclays to build better asphalt pavement
![[ Back to EurekAlert! ]](http://www.eurekalert.org/images/back2e.gif){kind=small}
Public release date: 4-May-2012[ | E-mail |
Share ] Contact: Zhanping You
zyou@mtu.edu
906-487-1059
Michigan Technological University
Tiny amounts of even tinier particles can stiffen the asphalt mixture, potentially preventing rutting
Long before freeways and parking lots, a naturally occurring asphalt first appeared on roads in about 600 B.C. You can still see patches of it in the ancient city of Babylon.
Under the onslaught of 21st century traffic, modern asphalt isn't likely to hold up for anywhere near 2,700 years. But at Michigan Technological University, Zhanping You is paving the way for brand-new asphalt blends to fight off cracks, rutting and potholes.
One of his papers on the subject made SciVerse ScienceDirect's Top 25 Hottest Articles of 2011 for the journal Construction and Building Materials.
"Nanoclay-Modified Asphalt Materials: Preparation and Characterization" reviews recent literature on asphalt that has been doctored with nanomaterials. It also presents new discoveries from You's team suggesting that adding nanoclays to asphalt materials could make for safer, longer-lasting roadways.
"Asphalt is now made from petroleum, so it's very expensive," said You, an associate professor of civil and environmental engineering. "As a result, a lot of people are looking at ways to make it more durable."
Heat, cold and stress in the form of traffic take their toll on asphalt pavement, made from a mix of asphalt and aggregates like gravel. That leads to cracks, potholes and a process called rutting. Ruts are most likely to form on busy roads, sections with slow traffic, and areas with stop signs and stoplights, where the rubber hits the road hard thousands of times a day.
"Rutting can be very dangerous, especially in snow and ice," You said. "If we could use advanced materials to reduce rutting, that would be very beneficial to the public."
You's team tested two types of nanoclays, adding 2-4 percent by weight to the asphalt. That's a smidgeonless than half of a percent of the total weight of the asphalt pavement itself. But it made a big difference.
"It improved the viscosity significantly," You said. "That means it will provide better stiffness, which means that it won't deform as much in hot weather or under heavy traffic."
They don't yet know if nanoclay can help asphalt resist cracking in cold weather or under heavy loads, since their testing isn't completed. "But it is always our goal to develop new asphalt mixtures with those qualities," You said.
His lab is also testing how other nanomaterials, including nano-silica and nano-composites, will affect asphalt durability.
###
In addition to You, coauthors of "Nanoclay-Modified Asphalt Materials: Preparation and Characterization" are Assistant Professor Qingli Dai, PhD students Julian Mills-Beale and Shu Wei Goh and former undergraduate Justin Foley of Michigan Tech's Department of Civil and Environmental Engineering; Samit Roy of the University of Alabama, Tuscaloosa; and Associate Professor Gregory Odegard of Michigan Tech's Department of Mechanical Engineering-Engineering Mechanics.
[ | E-mail | Share ] ?
AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert! system.
Public release date: 4-May-2012[ | E-mail |
Share ] Contact: Zhanping You
zyou@mtu.edu
906-487-1059
Michigan Technological University
Tiny amounts of even tinier particles can stiffen the asphalt mixture, potentially preventing rutting
Long before freeways and parking lots, a naturally occurring asphalt first appeared on roads in about 600 B.C. You can still see patches of it in the ancient city of Babylon.
Under the onslaught of 21st century traffic, modern asphalt isn't likely to hold up for anywhere near 2,700 years. But at Michigan Technological University, Zhanping You is paving the way for brand-new asphalt blends to fight off cracks, rutting and potholes.
One of his papers on the subject made SciVerse ScienceDirect's Top 25 Hottest Articles of 2011 for the journal Construction and Building Materials.
"Nanoclay-Modified Asphalt Materials: Preparation and Characterization" reviews recent literature on asphalt that has been doctored with nanomaterials. It also presents new discoveries from You's team suggesting that adding nanoclays to asphalt materials could make for safer, longer-lasting roadways.
"Asphalt is now made from petroleum, so it's very expensive," said You, an associate professor of civil and environmental engineering. "As a result, a lot of people are looking at ways to make it more durable."
Heat, cold and stress in the form of traffic take their toll on asphalt pavement, made from a mix of asphalt and aggregates like gravel. That leads to cracks, potholes and a process called rutting. Ruts are most likely to form on busy roads, sections with slow traffic, and areas with stop signs and stoplights, where the rubber hits the road hard thousands of times a day.
"Rutting can be very dangerous, especially in snow and ice," You said. "If we could use advanced materials to reduce rutting, that would be very beneficial to the public."
You's team tested two types of nanoclays, adding 2-4 percent by weight to the asphalt. That's a smidgeonless than half of a percent of the total weight of the asphalt pavement itself. But it made a big difference.
"It improved the viscosity significantly," You said. "That means it will provide better stiffness, which means that it won't deform as much in hot weather or under heavy traffic."
They don't yet know if nanoclay can help asphalt resist cracking in cold weather or under heavy loads, since their testing isn't completed. "But it is always our goal to develop new asphalt mixtures with those qualities," You said.
His lab is also testing how other nanomaterials, including nano-silica and nano-composites, will affect asphalt durability.
###
In addition to You, coauthors of "Nanoclay-Modified Asphalt Materials: Preparation and Characterization" are Assistant Professor Qingli Dai, PhD students Julian Mills-Beale and Shu Wei Goh and former undergraduate Justin Foley of Michigan Tech's Department of Civil and Environmental Engineering; Samit Roy of the University of Alabama, Tuscaloosa; and Associate Professor Gregory Odegard of Michigan Tech's Department of Mechanical Engineering-Engineering Mechanics.
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Alzheimer Update: Facts and Figures - Senior Living Information Blog
Here are some facts & figures shared in the Alzheimer's Association April Newsletter:
New Report Finds an Estimated 1 out of 7 People With Alzheimer?s Live Alone
According to the Alzheimer?s Association?s??2012 Alzheimer?s Disease Facts and Figures, Caring for people with Alzheimer?s and other dementias will cost the United States an estimated $200 billion in 2012, including $140 billion paid by Medicare and Medicaid.?
Click here to watch the2012 Alzheimer?s Disease Facts and Figures?video.
Unless a concerted effort to change the trajectory of the disease is made today, costs for Alzheimer?s and other dementias will soar from $200 billion this year to as high as $1.1 trillion dollars in 2050 ? just 38 years. This dramatic rise includes a 500 percent increase in combined Medicare and Medicaid spending and 400 percent increase in out-of-pocket spending for families.
?With aging baby boomers and the nation facing unprecedented economic challenges, it is more important than ever for America to deal with the Alzheimer?s crisis,? said Erna Colborn, President and CEO of the Alzheimer?s Association, Greater Illinois Chapter. ?The impact of Alzheimer?s on Illinois cannot be underestimated, with as many as 210,000 living with the disease now and an estimated 240,000 living with it by 2025 ? it is clear every effort must be made to address Alzheimer?s disease today.?
According to the Alzheimer?s Association report, there are 5.4 million Americans living with Alzheimer?s disease, including 5.2 million people age 65 or older and 200,000 people under the age of 65. Alzheimer?s disease cannot wait, every 68 seconds someone in America develops Alzheimer?s.?
The new report reveals there are 15.2 million friends and family members providing care for individuals with Alzheimer?s and other dementias, including 581,773 caregivers in Illinois. In 2011, these caregivers provided $210 billion dollars worth of unpaid care nationally, and $8,029,782,630 in Illinois. Caregivers take on a tremendous financial, physical and emotional toll to help care for a loved one with Alzheimer?s. Sixty-one percent of family caregivers of people with Alzheimer?s and other dementias rated their emotional stress of caregiving as high or very high.?
The?2012 Alzheimer?s Disease Facts and Figures?reports that an estimated 800,000 individuals in the United States have Alzheimer?s and live alone, and up to half of these individuals do not have an identifiable caregiver. People with dementia who live alone are at greater risk of jeopardized health than those who live with others, including greater risk of missed or delayed diagnosis and increased risk for self-neglect, including malnutrition and untreated medical conditions. Those who have Alzheimer?s and live alone are also at increased risk of wandering away from home unattended and for accidental death, possibly due to lack of recognition of harmful situations and delays in seeking medical attention. These issues are compounded by the fact that many individuals who live alone are often in denial of how serious their cognitive impairment is and refuse help from others.?
?Advance planning for the individual with Alzheimer?s or another dementia who lives alone is absolutely critical,? said Colborn. ?Alzheimer?s and other dementias take individuals through unfamiliar territory, and advance planning in the early stages of the disease allows individuals to build their care team, make financial plans and prepare for future safety concerns, while they are still cognitively able to do so.??
Alzheimer?s has profound implications for future state budgets, and states must prepare now to address the multiple and complex challenges that Alzheimer?s poses to individuals, families and state governments, particularly Medicaid.
The full text of the Alzheimer?s Association?s?2012 Alzheimer?s Disease Facts and Figures?can be viewed by?clicking here.
SOURCE:?CLICK HERE
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Low Curiosity Debt Consolidation Financial loan ? The way to Get ...
Thursday, May 3rd, 2012 by: lacikalmus93
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