Monthly Archives: June 2017

Meadows: Freedom Caucus eyeing $1.5 trillion debt ceiling increase – Politico

Posted: June 14, 2017 at 4:06 am

Mark Meadows said thats smaller than the $2.5 trillion he believes the White House wants. | AP Photo

Some House Freedom Caucus conservatives want to raise the debt ceiling by a smaller amount than the Trump administration would like just long enough to clear the 2018 mid-term elections, the groups leader said Tuesday.

The Freedom Caucus has not taken an official position on a specific number. But Chairman Mark Meadows emerged from a group meeting Tuesday night saying some of his conservative colleagues are looking at a $1.5 trillion lift in the nations borrowing cap.

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The North Carolina Republican said thats smaller than the $2.5 trillion he believes the White House wants.

The White House wants $2.5 trillion, is what I heard. Were more in the $1.5 trillion range, Meadows said. Its not an official position, but some members of the Freedom Caucus have been discussing $1.5 trillion as a specific amount in a debt ceiling increase.

Treasury Secretary Steven Mnuchin has asked Congress to raise the debt ceiling before the August recess, leaving Republicans just a few weeks to cobble together a plan. Freedom Caucus members want to address the matter before the recess, but theyre asking for spending reforms and debt-payment prioritization to accompany any lift in the nations borrowing limit.

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GOP leaders, however, have all but thrown out that idea and are signaling that theyre more likely to work with Democrats since the debt ceiling has to pass the Senate, meaning it will need eight Democratic votes.

While few have discussed numbers, let alone settled on a plan, Meadows suggested the $1.5 trillion would push the deadline for addressing the contentious issue again past the mid-term elections.

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More Immigration Does Not Mean Less Economic Freedom – Reason

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It is not easy to maintain a society's commitment to freedom and limited government. The social consensus on which these values are based requires laverrue via Foter.com / CC BYconstant work. And many conservative intellectuals fear that large-scale immigration, especially from poor and unfree countries, makes this job much harder because immigrants bring with them the attitudes and beliefs of their home country that have an impact on their destination countries.

However, new research shows that the fear that immigration undermines economic freedom may be overblown.

Conservative pundit Victor Davis Hanson, expressing such anxieties, recently wrote that borders naturally arise to reflect common bonds of language, culture, habit, and tradition. And "when borders disappear" because there is no control over who comes in, these ties "become attenuated." Similarly, British scholar Paul Collier observers that "migrants are essentially escaping from countries with dysfunctional social models" that are the "primary cause of their poverty." Letting these migrants bring their culture and norms risks compromising their new countries' institutions.

Even the famed Austrian-school economist Ludwig von Mises, who viewed free migration as an essential component of the (classical) liberal program, feared that in any country where the state already intervenes in the economy, migrants might exploit opportunities to further erode the economic freedom of the native-born.

The main evidence for such fears has been offered by Harvard University's George Borjas. In a paper and a recent book he argues that estimates showing that opening up the borders would result in trillions of dollars in gains in global wealth assume that immigrants don't compromise the institutional environment of their destination that makes them prosperous. "What would happen to the institutions and social norms that govern economic exchanges in specific countries after the entry/exit of perhaps hundreds of millions of people?," he asks. He then proceeds to model the impact on national productivity given various levels of immigration and concludes that with enough immigration, productivity losses from negative "spill overs" become greater than economic gains. But he simply assumes the levels of negative spill overs that he models. He offers no evidence that such spill overs actually exist in the first place.

A new strain of research, which I have contributed to, has examined the relationship between increased immigration and changes in the destination countries' economic freedom. It finds the exact opposite of what these critics contend.

The first of these studies in 2015, which I co-authored, examined whether immigrants undermine economic institutions as measured by the Economic Freedom of the World Annual Report. This economic freedom index, which includes the size of government, the security of property rights, the integrity of the monetary system, the freedom to trade internationally, and the amount of government regulation, is a reasonable proxy for the type of institutions that conservatives worry immigration might destroy. Prior research has found a strong relationship between greater economic freedom and prosperity.

Our study compared 110 countries to examine how immigration impacted their economic freedom from 1990 to 2011. We examined how the economic freedom of countries with a greater initial percentage "stock" -- of immigrants in 1990 was impacted 20 years later. We also examined how economic freedom was impacted in countries that allowed a greater "flow" of immigrants between 1990 and 2011.

We found that rather than decreasing economic freedom, there was a statistically significant positive correlation between more immigration and more economic freedom. In the 32 reported regressions, some of which parsimoniously controlled for only immigration measures and initial levels of freedom, while others controlled for multiple other factors which might influence changes in economic freedom, we did not find a single instance of a statistically significant negative relationship between immigration and economic freedom.

A similar study by Metropolitan State University of Denver's Alexandre Padilla and Nicolas Cachanosky examined how immigration affected economic freedom at the state level using the Economic Freedom of North America Annual Report. This index measures state level government spending, taxation, and labor market regulation. The study looked at how the immigrant share of a state's population and the naturalized-citizen share of the voting population impacted economic freedom in the state over 10-year periods between 1980 and 2010.

The study was unable to find a statistically significant relationship between either the immigrant or naturalized-citizen share of the population and state-level economic freedom, despite the fact that the foreign population in the United States more than doubled while the native-born population increased less than 18 percent during the final 20 years of analysis. In other words, more immigrants did not have any impact on the economic freedom in a state.

Critics could object that these studies were based on immigration samples taken in a world where migration flows have been tightly managed in terms of both the quantity and quality of migrants. Hence their findings can't be used to generalize to a world with little to no border controls. Perhaps these immigrants haven't reached the critical mass necessary to erode freedom. And perhaps there is a selection bias in the admission of immigrants that would not be present in a world of more open borders.

But another new study I coauthored with University of Tennessee's J.R. Clark and Cato Institute's Alex Nowrasteh, addresses these issues by examining a limited form of open borders in Israel. Israel restricts the immigration of non-Jews, but the "Law of Return" allows all Jews to emigrate to Israel regardless of their country of origin and gives them instant full citizenship, with the right to vote, upon arrival.

When the Soviet Union reduced its emigration restrictions and subsequently collapsed, migrants flowed en masse into Israel. The new Russian immigrants, who had a 70-year history of living under socialism with a lack of economic and political freedom, amounted to 20 percent of Israel's population by the end of the 1990s.

Yet the result was a dramatic increase in Israel's economic freedom. Israel catapulted from 15 percent below the global average in economic freedom to 12 percent above it, improving its ranking among countries by 47 places. With the exception of the size of government, all the major areas of economic freedom (such as the security of property rights, the freedom to trade internationally, freedom from regulation, and the soundness of their money), improved significantly. The size of government temporarily increased because, as citizens, the new immigrants were immediately eligible for government transfers. But even this measure eventually improved after the immigrants were economically integrated.

The gain in economic freedom occurred even though the new immigrants were politically active both in terms of influencing the two major parties and forming their own immigrant parties, which is unusual for immigrants. So if they were "importing" their attitudes to the new country, it would have showed. Yet far from bringing socialism's lack of economic freedom with them, they seem to have rebelled against economic control. In fact, in recognition of this, the left leaning labor party even stopped using the color red in their campaign materials out of fear that it would cost them immigrant votes.

An obvious objection to this study is that Israel is a special case because migrants who come there feel a deep affinity with it, which is not necessarily the case for more "opportunistic" immigrants. But surveys indicated that most Russian Jews would have preferred another destination had one been practical. Also, they were different from Israel's local population because nearly all spoke Russian and few spoke a Jewish language. And few of them were religious. (The Law of Return applies to descendants of Jews and their non-Jewish spouses.) The sociologists who have studied these migrants have classified them as 'normal' migrants who came because of "push motives" from their origin country, just like other migrants.

These empirical studies can't definitively say why immigrants don't negatively, and often positively, impact economic freedom. But I suspect that immigrants who leave a dysfunctional social system are not a random sample of a country's population and are unlikely to desire to recreate what they sought to escape in their new countries. Is there a more rabidly anti-socialist voting block in the United States than Cuban immigrants? They might be an extreme example, but there might be an element of them in other migrants from other unfree countries as well.

To be sure, these new studies are preliminary and don't decisively settle the issue. Much research remains to be done. However, they should make us more skeptical of those who fear that increased, or even unrestricted, migration would necessarily erode the economic freedom that makes destination countries prosperous.

Benjamin Powell is a senior fellow with the Independent Institute, Oakland, Calif., and director of the Free Market Institute and a professor of economics in the Rawls College of Business Administration at Texas Tech University. He's also the editor of the book, The Economics of Immigration.

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Does President Trump Support Unrestrained Freedom? – Cato Institute (blog)

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The Republican National Committee, in the person of Chairwoman Ronna Romney McDaniel, informs me that I have been selected to represent the Commonwealth of Virginia as a member of The Presidents Club. I know that this is an important responsibility because it comes with a Priority Mail BRE and a request for $750. Theres a lot of boilerplate in the letter about fake news and the Democrats and their radical left-leaning allies. (Really, if theyre radical, surely theyre more than left-leaning. Why not just come out and say it theyre left-wingers!)

But Im particularly struck by this line:

I believe you share President Trumps objectives of smaller government, fiscal discipline, lower taxes, secure borders, conservative judges, a stronger military and unrestrained freedom.

Seriously President Trumps objective is unrestrained freedom?

Some of those objectives I can see. Fiscal discipline is a presumptuous claimwhen youve promised not to touch the biggest spending programs. Some of the administrations programs might make government smaller, but others clearly would not. But seriously, unrestrained freedom?

For nearly two years now Donald Trumps main policy themes have been to close our borders, to deport millions of our neighbors and co-workers, and to stop Americans from buying products made overseas. He has bullied, subsidized, and threatened businesses into making uneconomic decisions. He has also talked at length about his desire to limit freedom of speech, frustrated as he is thatour press is allowed to say whatever they want.While Republicans and Democrats in Congress and the states work on criminal justice reform Attorney General Jeff Sessionssteps up the drug war. Trumps acceptance speech at the Republican National Convention was described in Reason as easily the most overt display of authoritarian fear-mongering I can remember seeing in American politics.

The idea that President Trumps objectives include unrestrained freedom is ludicrous even in the context of political fundraising letters.

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Notebook: Healthy Laquon Treadwell Practicing with ‘A Mental Freedom’ – Vikings.com

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EDEN PRAIRIE, Minn. Laquon Treadwell listened to the question and looked skyward.

Up there, the second-year receiver said in response to a question about his confidence level.

The sun began peeking through a blanket of clouds on a dripping muggy morning at Winter Park Tuesday when the Vikings opened their mandatory minicamp.

Treadwell had an impressive catch over the middle during the session, made several other plays and ran well. There was also a near miss on a nice deep route against Xavier Rhodes.

On his final day as a 21-year-old, the 2016 first-round pick described playing with a mental freedom that comes with being healthy and another year removed from a significant leg injury in 2014 as a sophomore at Mississippi.

This year, hes stayed healthy in the offseason program and has taken substantial reps with the first team when the Vikings use a three receiver set.

It helps you relax mentally when you know youre all the way healthy and able to take some of those hits on your legs, Treadwell said. That was a big thing for me even in college. I got hits on my legs and was able to bounce back. Its a mental freedom.

Its just playing ball now and making plays, Treadwell added.

Treadwells rookie season wasnt quite what he expected. He appeared in nine games and finished with one catch for 15 yards after catching two or more passes in every college game he played.

Vikings Head Coach Mike Zimmer said earlier this offseason that last seasons results didnt stem from a lack of work by Treadwell. Zimmer said maybe he works too hard.

Vikings.coms Eric Smith tracked the work that Treadwell was doing after training camp practices last season, counting 277 post-practice catches of passes launched at him by a machine.

Zimmer also said that Treadwell has looked much different than he did a year ago.

Yeah, I think he looks good, Zimmer said. Hes stopping and starting. Some of the routes that hes been running as far as when he has to plant and comeback, I thought hes done pretty well. Hes run some good routes to accelerate over the middle. So, I think he just feels so much more comfortable now.

Vikings Offensive Coordinator Pat Shurmur said hes seen progress in the receiver who led the SEC with 11 touchdown receptions and 1,153 yards in 2015.

He came back, and he was really on point with what hes supposed to be doing mentally, Shurmur said. Hes been out here competing and doing a nice job running routes and catching the ball. Understanding where he fits in the running game and who to block. To this point, weve been really pleased with his progress based on a year ago.

The Vikings have two more days of minicamp before wrapping their offseason program. The team will then break before reporting to training camp next month.

Its safe to say that Treadwell wont be looking too far ahead of the break.

Weve got to come out here and get to work, Treadwell said. Ive just got to continue to do it and find my role in this offense and help the team win some ball games.

Encouraged by Bridgewater

As mentioned, Treadwell suffered a fractured tibia and dislocated left ankle in a game on Nov. 1, 2014, so hes no stranger to bouncing back from a major injury.

The recovery efforts of another teammate, quarterback Teddy Bridgewater, have impressed Treadwell and others.

Bridgewater suffered a dislocated knee during a practice last August and has been doing rehab work since. Part of Bridgewaters rehab work includes dropping back and throwing the football, but he has not been cleared to practice with the team.

He looks great, really great, like he was never hurt, Treadwell said. Thats God-given talent, and hes a worker. Hes a fighter. Hes shown us a lot off the small time that weve seen him, and for him to bounce back so fast, thats been a blessing.

With anybody who takes an injury like that, it will take a couple of hits to overcome it, Treadwell added. Hes strong-minded and hes just ready to overcome that obstacle.

Valuable time

Injuries ravaged the Vikings offensive line last season, causing Minnesota to use eight different combinations of starters and five different players at left tackle.

The Vikings brought in tackles Riley Reiff and Mike Remmers early in free agency. Reiff has been at left tackle since arriving, and Remmers has been the other bookend. In between, the brunt of first-team reps have gone to Alex Boone at left guard, Nick Easton at center and Joe Berger at right guard.

Remmers said the offensive linemen have appreciated the opportunity to work together and build cohesion during the offseason program so that they will be better prepared for camp and the preseason.

This time of year is absolutely critical, Remmers said. Youre getting little things down, communication, technique, footwork and everything. This time is critical so when we go into August were all in a groove together and continue to grow from there.

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Japan accused of eroding press freedom by UN special rapporteur – The Guardian

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The government of Shinzo Abe has been vocal about unfair reporting. Photograph: Yoshitaka Sugawara/AP

The UNs special rapporteur on freedom of expression has accused Japan of eroding media freedoms and stifling public debate of issues such as the Fukushima nuclear meltdown and the countrys actions during the second world war.

In a report submitted to the UN human rights council, David Kaye said he had identified significant worrying signals about Japans record on freedom of expression.

His investigation the first into freedom of the press in Japan was prompted by concern over mounting government pressure on the countrys media.

Critics have cited the domestic medias delay in reporting that the March 2011 accident at Fukushima had caused a nuclear meltdown a decision believed to reflect official attempts to play down the severity of the disaster.

In 2014, the Asahi Shimbun, under pressure from the administration of the prime minister, Shinzo Abe, retracted an article claiming 650 workers had fled the Fukushima Daiichi plant soon after the disaster, defying an order by its then manager, Masao Yoshida, to stay and make a last-ditch effort to regain control of the reactors.

The paper later admitted its account, based on the newspapers interpretation of leaked testimony by Yoshida, was mistaken. Significantly, however, the reports retraction led to the breakup of an Asahi investigative team that had produced several scoops critical of the governments handling of the crisis.

While Kaye did not refer to specific reports on the Fukushima meltdown, he did voice concern over the removal from school textbooks of references to Japans wartime use of sex slaves.

Kaye noted the gradual disappearance of references to comfort women tens of thousands of women, mostly from the Korean peninsula, who were forced to work in Japanese military brothels before and during the war.

In 1997, all seven history textbooks approved for use in junior high schools addressed wartime sexual slavery, yet none referred to the issue between 2012-15, and only one mentioned it last year.

Kaye said the lack of public debate over Japans wartime role, restrictions on access to information, and government pressure that has led the media to practise self-censorship require attention lest they undermine Japans democratic foundations.

Japan responded angrily to claims that media freedoms were at risk under Abe.

Its ambassador to the UN, Junichi Ihara, accused Kaye of peddling inaccuracies about the governments commitment to a free press. In a statement to the UN human rights council on Monday, he said: It is regrettable that some parts of [Kayes] report are written without accurate understanding of the governments explanation and its positions.

Ihara rebutted Kayes claim that a law permitting the government to suspend broadcast licences for TV and radio networks for unfair reporting was being used to pressure senior editors into underplaying or ignoring sensitive political stories.

Last year, the internal affairs minister, Sanae Takaichi, prompted an outcry after saying that broadcasters that repeatedly failed to show fairness in their political coverage, despite official warnings, could be taken off the air.

Soon after, three veteran news anchors all with a reputation for grilling government politicians left their jobs almost simultaneously, sparking allegations that they had been pressured to quit after Abe and his colleagues complained about them during private dinners with media executives.

Ihara noted that no minister had ever suspended a broadcasting licence, adding that the law does not give rise to any pressure on the media.

Kayes report was similarly critical of the 2014 state secrets law, under which journalists can be imprisoned for up to five years for reporting classified information passed on by whistleblowers. He said the law was overly broad and risked being applied arbitrarily, adding that the government should not be in the position of determining what is fair.

Ihara countered: Information designed as specially designated secrets is limited under strict conditions, adding that information-gathering activities performed by journalists are not punishable under the act.

The rift between Japan and the UN widened after Joseph Cannataci, special rapporteur on the right to privacy, said an anti-conspiracy bill being debated in parliament could lead to undue restrictions to the rights to privacy and to freedom of expression.

The government insists the new law is necessary for Japan to fulfil its international obligation to deter acts of terrorism. Abe denounced Cannatacis assessment as extremely unbalanced and said his conduct was hardly that of an objective expert.

Confrontations between Japanese and UN representatives have grown more heated in recent years. In 2015, Tokyo suspended payments to Unesco after it included disputed Chinese documents about the Nanjing massacre in its World Memory List.

Yoshihiko Noda, the secretary general of Japans biggest opposition party, accused Abes government of slamming the door in the faces of UN special rapporteurs, according to the Mainichi Shimbun.

Earlier this year, Reporters Without Borders ranked Japan 72nd in its global press freedom index the lowest among the G7. The country has slid down the rankings since 2010, when it was placed 11th.

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‘Essence of Freedom Run’ Breaks – Daily North Shore

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DEERFIELD A record number 500 runners hit the streets of Deerfield on Memorial Day for the 4th Annual Essence of Freedom 5K/10K Run. The event is the largest fundraiser for Support Our Soldiers Freedom, Inc. (S.O.S. Freedom), a nonprofit that provides financial assistance to Illinois active duty military and veterans.

Thanks to the runners, sponsors and donors we raised over $15,000 for active duty and veterans who need financial support for with expenses that military benefits dont cover such as housing modifications and maintenance, household bills, mental health care, and transition to civilian life said Marilee Papale Shipman, race director and S.O.S. Freedom president.

While the majority of runners were from the Midwest, we had registrants from the Southeast, East Coast and even as far away as Ecuador, said Shipman. Runners ranged in age from seven to 84. Many became emotional and sentimental as they passed tribute signs that honored friends and loved ones.

Scott Friedlander, Deerfield, was the first 5K runner to cross the finish line with a time of 16 minutes and 59 seconds. Jeff Mousseau, Wheaton, won the overall 10K race with a time of 43 minutes and 42 seconds. Race results can be viewed at http://results.active.com/events/essence-of-freedom-run4.

Prior to the race start, Rep. Brad Schneider addressed the runners and spectators and incoming Stevenson High School freshman Emmie Ginsberg sang the National Anthem. We are grateful to everyone who supported this event and helped us honor the true meaning of Memorial Day, said Shipman. Sponsors included:

Submitted bySOS Freedom:https://sos-freedom.org.

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Stocks bounce back to record highs as tech companies rise – Los Angeles Times

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U.S. stocks bounced back to record highs Tuesday as investors put an end to a two-day drop for technology companies. Energy and consumer-focused companies also made outsize gains.

In a reversal from the two previous days, investors put money into companies that stand to benefit from faster economic growth, including retailers; makers of basic materials such as paints and chemicals; energy companies; and banks. Big-dividend companies, which are usually considered safer investments, did not do as well as the rest of the market.

Tech companies reversed their losses from Monday, although they remain well below their peak from last week.

There's no question that the rally in that sector can continue as long as investors' sentiment remains positive, said Brian Rehling, co-head of global fixed income strategy at Wells Fargo Investment Institute. Rehling said he believes tech stocks are too high, but not by a huge amount.

The Standard & Poor's 500 index rose 10.96 points, or 0.5%, to 2,440.35. The Dow Jones industrial average rose 92.80 points, or 0.4%, to 21,328.47.

The Nasdaq composite, which has a large concentration of technology companies, rose 44.90 points, or 0.7%, to 6,220.37, but did not get back to its record highs. The Russell 2000 index of smaller-company stocks advanced 6.77 points, or 0.5%, to 1,425.98.

Technology companies led the way. Facebook rose 1.5% to $150.68. Microsoft ticked up 1.2% to $70.65. Hard drive maker Western Digital climbed 3.9% to $90.05.

Even after their recent skid, technology companies have done much better than the rest of the market in 2017. Big tech firms such as Apple and Alphabet, Googles parent company, have been responsible for a huge portion of the stock market's gains this year.

Amazon helped retailers rise. The online giant rose 1.6% to $980.79. Best Buy climbed 1.9% to $57.85, and Home Depot advanced 1.2% to $153.99.

Among materials companies, Dow Chemical jumped 2% to $65.26 and Sherwin-Williams rose 1.5% to $353.25.

Energy companies joined the gains as the price of oil reversed an early loss. U.S. crude futures rose 38 cents to settle at $46.46 a barrel. Brent crude, used to price international oils, ticked up 43 cents to $48.72 a barrel.

Among energy stocks, Halliburton climbed 2% to $45.84 and oil refiner Tesoro increased 3.3% to $94.22.

Wholesale gasoline rose 1 cent to $1.50 a gallon. Heating oil rose 2 cents to $1.45 a gallon. Natural gas slumped 6 cents, or 1.9%, to $2.97 per 1,000 cubic feet.

The Federal Reserve began a two-day policy meeting Tuesday. On Wednesday, investors expect the central bank to raise interest rates for the third time since December. Rehling, of the Wells Fargo Investment Institute, said investors will scrutinize the Fed's views on inflation and how aggressive it will be in raising interest rates in the future.

The market's going to be looking to see if they're still on track, he said. Investors also want to know about the Fed's plan to start reducing its huge portfolio of bonds, he said. He doesn't think that will have much effect on the bond market.

Information technology company Science Applications International Corp. slumped 8.5% to $74.52 after its sales fell short of Wall Street's projections. The company said tight budgets for customers are hurting its sales, and greater costs affected its profit.

Restaurant chain Cheesecake Factory slid 9.9% to $52.58 after it said sales at established restaurants have fallen in the current quarter. Those sales, an important measure of how a retailer is doing, were down about 1%; FactSet says analysts expected growth of 1.7%.

Verizon officially bought Yahoo's Internet business for $4.5 billion, bringing an end to Yahoo's 21 years as a publicly traded company. Yahoo is being combined with AOL in a new Verizon unit called Oath, which is run by AOL Chief Executive Tim Armstrong. Verizon stock fell 1.5% to $46.46.

Bond prices edged up. The yield on the 10-year Treasury note slipped to 2.21% from 2.22%.

Gold fell 30 cents to $1,268.60 an ounce. Silver fell 18 cents, or 1%, to $16.77 an ounce. Copper fell 2 cents to $2.60 a pound.

The dollar rose to 109.96 yen from 109.79 yen. The euro inched up to $1.1212 from $1.1208.

Germany's DAX gained 0.6% and the CAC 40 in France advanced 0.4%. In Britain the FTSE 100 index lost 0.2%. Asian markets finished mostly higher. In South Korea the Kospi rose 0.7%, the Hang Seng in Hong Kong advanced 0.6%, and Japan's Nikkei 225 slipped 0.1%.

UPDATES:

2:15 p.m.: This article was updated with closing prices, context and analyst comment.

This article was originally published at 6:55 a.m.

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Touch-sensing technology born of CMU researchers grabs companies’ interest – Pittsburgh Post-Gazette

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Pittsburgh Post-Gazette
Touch-sensing technology born of CMU researchers grabs companies' interest
Pittsburgh Post-Gazette
It took two years for researchers at Carnegie Mellon University to develop technology that can add touch-sensing capabilities to everyday objects and surfaces like toys, steering wheels and walls, but it did not take long for companies to express ...

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Sudden Technology Tumble Continues as Stocks Fall Further – New York Times

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New York Times
Sudden Technology Tumble Continues as Stocks Fall Further
New York Times
NEW YORK U.S. stock indexes slipped again Monday as technology companies, which were near record highs last week, suffered a second day of sharp losses. Investors are changing course and selling some of the best-performing stocks of the year ...

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Superconducting nanowire memory cell, miniaturized technology – Phys.Org

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June 13, 2017 Superconducting nanoscale memory device. The binary information is encoded in the direction of the electrical current in the loop. When the current flows clockwise, this is considered a '0' state of the memory device. When it flows counter clockwise, this is a '1' state of the memory device. Because the electrons are superconducting, the current flows indefinitely in the loops, making the memory nonvolatile. (a) A photograph of the memory device, consisting of a superconducting strip of Mo75Ge25 (yellow) with a pair of superconducting nanowires forming a closed loop (also yellow): The width of the nanowires is 24 nm and 22 nm, as marked. (b) The critical current, i.e., the maximum current which can be injected into the device without destroying superconductivity, is plotted as a function of magnetic field. To set the memory state '0', we apply positive current targeting the shaded diamond. To set the memory to the state '1', a negative current is applied (as the same external magnetic field). To read out the memory state, the current is ramped to a higher value, as shown by the red rhombus, and the current value at which voltage occurs is measured. Such value is the critical current. Its statistical distribution is shown in (c). The measured value of the critical current depends on the pre-set memory value, '0' or '1'. Thus by measuring the critical current we are able to determine the state of the memory cell. Credit: . Alexey Bezryadin and Andrew Murphey, University of Illinois at Urbana-Champaign

Developing a superconducting computer that would perform computations at high speed without heat dissipation has been the goal of several research and development initiatives since the 1950s. Such a computer would require a fraction of the energy current supercomputers consume, and would be many times faster and more powerful. Despite promising advances in this direction over the last 65 years, substantial obstacles remain, including in developing miniaturized low-dissipation memory.

Researchers at the University of Illinois at Urbana-Champaign have developed a new nanoscale memory cell that holds tremendous promise for successful integration with superconducting processors. The new technology, created by Professor of Physics Alexey Bezryadin and graduate student Andrew Murphy, in collaboration with Dmitri Averin, a professor of theoretical physics at State University of New York at Stony Brook, provides stable memory at a smaller size than other proposed memory devices.

The device comprises two superconducting nanowires, attached to two unevenly spaced electrodes that were "written" using electron-beam lithography. The nanowires and electrodes form an asymmetric, closed superconducting loop, called a nanowire 'SQUID' (superconducting quantum interference device). The direction of current flowing through the loop, either clockwise or counterclockwise, equates to the "0" or "1" of binary code.

The memory state is written by applying an oscillating current of a particular magnitude, at a specific magnetic field. To read the memory state the scientists ramp up the current and detect the current value at which superconductivity gets destroyed. It turns out that such destruction or critical current is different for the two memory states, "0" or "1". The scientists tested memory stability, delaying reading of the state, and found no instances of memory loss. The team performed these experiments on two nanowire SQUIDS, made of the superconductor Mo75Ge25, using a method called molecular templating. The results are published in the June 13, 2017 New Journal of Physics.

Bezryadin comments, "This is very exciting. Such superconducting memory cells can be scaled down in size to the range of few tens of nanometers, and are not subject to the same performance issues as other proposed solutions."

Murphy adds, "Other efforts to create a scaled-down superconducting memory cell weren't able to reach the scale we have. A superconducting memory device needs to be cheaper to manufacture than standard memory now, and it needs to be dense, small, and fast."

Up to now, the most promising supercomputing memory devices, called 'single-flux quanta' devices, rely on manipulating circuits composed of Josephson junctions and inductive elements. These are in the micrometer range, and miniaturization of these devices is limited by the size of the Josephson junctions and their geometric inductances. Some of these also require ferromagnetic barriers to encode information, where Bezryadin and Murphy's device does not require any ferromagnetic components and eliminates magnetic-field cross-talk.

"Because the kinetic inductance increases with decreasing cross-sectional dimensions of the wire, nanowire SQUID memory elements could be reduced further, into the range of tens of nanometers," Bezryadin continues.

The researchers argue that this device can operate with a very low dissipation of energy, if the energies of two binary states are equal or near equal. The theoretical model for such operations was developed in collaboration with Averin The switching between the states of equal energy will be achieved either by quantum tunneling or by adiabatic processes composed of multiple jumps between the states.

In future work, Bezryadin plans to address the measurements of the switching time and to study larger arrays of the nanowire squids in functioning as arrays of memory elements. They will also test superconductors with higher critical temperatures, with the goal of a memory circuit that would operate at 4 Kelvin. Rapid operations will be achieved by utilizing microwave pulses.

Explore further: Scientists develop a control system for rapid superconducting memory cells

More information: Andrew Murphy et al. Nanoscale superconducting memory based on the kinetic inductance of asymmetric nanowire loops, New Journal of Physics (2017). DOI: 10.1088/1367-2630/aa7331

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Superconducting nanowire memory cell, miniaturized technology - Phys.Org

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