View post tag: Naval View post tag: Black Sea April 15, 2015 View post tag: USS Jason Dunham View post tag: europe Share this article The Arleigh-Burke class guided-missile destroyer USS Jason Dunham (DDG 109) departed the Black Sea, April 14, 2015, after a series of engagements that promoted peace and stability in the region.The vessel’s presence in the Black Sea served to reaffirm U.S. commitment towards strengthening partnerships and joint operational capabilities amongst U.S., NATO and regional Black Sea partners.Cmdr. Darren Dugan, USS Jason Dunham (DDG 109) commanding officer, said:Working alongside our NATO allies in the Black Sea was absolutely invaluable to improving the mutual interoperability of our forces.Jason Dunham entered the Black Sea in support of Operation Atlantic Resolve, April 3. During its time in the Black Sea, the vessel conducted several engagements and operations. It visited Varna, Bulgaria on April 4 and conducted two separate underway engagement with the Bulgarian Navy minehunter BGS Tsibar (32) and Romanian Navy corvette ROS Sebastian (F 264), respectively, on April 5.The vessel conducted PASSEX during which it engaged with the Bulgarian Romanian naval forces and practiced maneuvering in formation, simulated minehunting, maritime interdiction operations, air defense scenarios and a simulated underway replenishment. Jason Dunham participated in another underway engagement with the Turkish Navy frigate TCG Turgutreis (F-241) and submarine TCG Yildiray (S-350) April 12 and 13. With the Turkish naval forces the vessel practiced surface detection, communications and defense against sub-surface threats.Jason Dunham arrived in Constanta, Romania for a scheduled refueling before heading back out to sea April. 11.[mappress mapid=”15664″]Image: US Navy View post tag: News by topic Authorities Back to overview,Home naval-today USS Jason Dunham Leaves the Black Sea USS Jason Dunham Leaves the Black Sea View post tag: Navy
A record number of Oxford students were found guilty of ‘academic misconduct’ last year, new data has revealed.There were 57 reported cases in the proctorial year 2017-18, of which 53 were for plagiarism.The figure reflects an increase of 47% from 2016-17.The rise in cases comes despite the University warning students they could face expulsion if caught copying others’ work without acknowledgement.In the senior proctor’s annual oration, the outgoing holder of the role, Dr Edward Bispham, said that there had been steady increase in “reports of plagiarism and collusion, which are concentrated in particular parts of the University.”While Dr Bispham did not elaborate upon that claim, in 2011, the senior proctor said: “The great majority of [plagiarism] cases come from international students at the Saïd Business School.”Details of the four cases of academic misconduct that did not fall under plagiarism were not given.In October, government watchdog, the Quality and Assurance Agency for Higher Education, published a guide for universities outlining how they could fight a rise in “pernicious” cheating, and encouraging the use of increasingly sophisticated technology.Legal expert and the bursar of New College, David Palfreyman, said the majority of cases involved international students taking postgraduate degrees. He told the Daily Mail: “A lot of people on these courses have a lot at stake, and might be tempted to cheat because they are paying the full fees.”In 2009, the senior proctor revealed that one student had plagiarised almost half of their final-year project. “[It] contained some twenty-nine pages out of sixty-five that had been copied verbatim from a previous year’s report,” he said. “Admittedly they had been carefully retyped using a different typeface.”Proctorial years run from 9th week of Hilary Term to 8th week of the following Hilary.
Notre Dame professor of physics Boldizsár Jankó’s work with quantum properties of a nanoscale superconductor-ferromagnet system was recently published in “Nature Scientific Reports.”“It’s an example of taking two materials that are very different ⎯ superconductors have zero resistance, they expel magnetic fields, [and] they get weaker,” Jankó said. “Ferromagnets are anything but that ⎯ they have strong magnetic fields. So the question was, ‘What happens when you take some substrate and you put a nanometer-sized magnet on it?’”The basic design of the system Jankó’s team investigated involved a superconductor laid out like flat film with a pancake-shaped nanomagnet disk on top of this substrate, with the north and south poles of the nanomagnet corresponding to the top and bottom of the disk, he said. Given the antagonistic nature of these two materials, the team was curious to see what the result of this clash would be at such a small scale.“What the superconductor does [is] shield this magnetic field, so you basically induce a current in the superconductor,” Jankó said. “So the total magnetic field is almost zero in the superconductor, but there is a spontaneously generated current.”The result of this induced current is a weakened state in the superconductor wherever it flows, and a plot of the strength of the superconductor over different regions revealed a “Mexican hat”-shaped potential, Jankó said. The geometry of this potential is characterized by a peak signal directly under the nanomagnet, surrounded by a valley of weaker strength that gives way to a strong signal on the circular boundary.“When I looked at this ‘Mexican hat’ potential I said, ‘That’s just amazing, I haven’t seen anything like this,’” Jankó said. “So my first thought was that this ‘Mexican hat’ potential is going to trap exotic particles, and that’s what we saw.”The striking part of the microscopic materials medley investigated by Jankó’s team is that it behaves as a quantum analog to the classical rotor model, which is equivalent to tying a string to a rock and swinging it around in a circle, Jankó said.“The other thing we noticed is that you can put a supercurrent on to the superconductor, and [it] results in tilting of the ‘Mexican hat,’” Jankó said. “It weakens the superconductor on one side so that you have a deeper well and strengthens it on the other.”Jankó said this happens because the current flowing through the superconductor induces its own magnetic field, which changes the existing field around the nanomagnet.“That’s the classical view. What we found, quantum-mechanically, is that is true ⎯ but there are also more particles on the other side as well,” Jankó said. “It turns out that you are basically breaking the left-right symmetry, and these states are an equal superposition of left-rotating and right-rotating particles. So the quantum mechanical rotor goes in both directions.”The classical analog in this situation would be that of a billiard ball rolling back and forth in the groove of the tilted side of the Mexican hat ⎯ but now also rolling back and forth on the other side as well, similar to two oscillating pendulums instead of the single rotor, Jankó said. This dual-pendulum model prompted Jankó’s team to explore possible relations to chaos in the system.“We immediately thought of a connection to chaos because a kicked pendulum is chaotic,” Jankó said. “Its motion is extremely sensitive to a kick. Luckily, quantum mechanics makes things a lot simpler in this case. For a quantum mechanical particle that’s spread all over the place, it couldn’t care less about being chaotic. There are no initial conditions; it just has maybe a slightly different structure of the wave function.”In general, it is possible to go from a chaotic classical system to a quantum mechanical analog, but going back the other way is a far more difficult question, he said.“Here what we are saying is that we discover rotor states, pendulum states, and the pendulum can be made chaotic if you put impulses into the current to start driving the system,” Jankó said. “And in fact, we managed to describe the quantum-mechanical analog of this inverted pendulum ⎯ basically you have a rod and an object at the end of this rod, and you can stabilize this otherwise classically unstable inverted position. So if you perform the drive of this hinge, you can stabilize this state and have a stable inverted pendulum, called the Kapitza pendulum.” Tags: academic research, Physics
It also expressed a preference for shareholder engagement over divestment, noting that dialogue should be “the first call to action and the most constructive form of communicating concerns”, an ethos that would potentially pave the way for a re-admittance of the tobacco stocks following a two-year study.According to a paper by its consultants Wilshire Associates, its exposure to stocks would account for around $1bn of its $156bn global equity portfolio.The same study also estimates that CalPERS has lost at most $3bn from its divestment decision, and that its continued divestment would lead to a portfolio discrepancy of $172m during one out of every 20 years.Despite the returns foregone, and seeing engagement as preferential to selling stakes, the fund’s revised investment policy still allows for divestment of individual firms, even where it clearly views such sales as problematic.It notes, for example, that, in some instances, the fund’s fiduciary duty might allow a ban on acquiring any greater stake in a firm but not its complete sale.Divesting certain industries or companies has shifted back into the limelight in recent months, as pension and other institutional investors push ahead with bans on high-carbon companies, such as utilities and certain mining firms.Risk versus returnsCalPERS is likely to view the sale of coal holdings as a more cut-and-dried situation, and the fund is indeed among numerous investors to have sold out of thermal coal over the last year after the Californian government passed a law banning coal holdings for CalPERS and the California State Teachers’ Retirement System.However, the sale of coal holdings can easily be viewed as reducing risk, without sacrificing returns, two areas highlighted by CalPERS in its policy on divestment.As Danish provider PKA shows, its decision to sell stakes in select coal companies saved it from exposure to a 70% decline in their share price.The provider is expanding its engagement progamme with companies drawing revenues from coal and says it will divest those that fail to put in place a policy that reduces reliance on the asset.The tobacco industry – unlike the coal industry, faced with a global consensus to lower carbon emissions that casts doubt on long-term profitability – still enjoys profits despite attempts by governments the world over to reduce smoking. If CalPERS continues to shun the sector, it is likely to continue to forego returns needed to pay pensions.But CalPERS is by far not the only fund to divest tobacco. The Dutch pension manager PGGM, which largely manages money for healthcare sector fund PFZW, no longer invests in the industry, citing companies’ reluctance to engage on concerns around child labour and marketing targeted at young people but also the “problematic” relationship smoking enjoys with its membership in the healthcare sector.Norway’s Government Pension Fund Global has also excluded some of the largest tobacco manufacturers, including Philip Morris, since 2009.Local government pension schemes (LGPS) in the UK were advised in 2014 that they could divest tobacco on the grounds of its health impact. But they faced a problem similar to the one facing CalPERS, loath to deny their membership returns, even where local authorities were now directly responsible for healthcare.“The [LGPS] administering authority’s power of investment must be exercised for investment purposes and not for any wider purposes,” an opinion by Nigel Giffin QC, prepared for the then-shadow LGPS Advisory Board concluded. “Investment decisions must therefore be directed towards achieving a wide variety of suitable investments, and to what is best for the financial position of the fund (balancing risk and return in the normal way).”Unlike exclusions based on the grounds of carbon footprint, the exclusion of tobacco companies is a trickier issue when examined through the prism of profit. But investors should question whether any companies – if excluded solely for health reasons, for producing unhealthy goods – should be admitted, and perhaps consider, for example, a health-based sin-stock exclusion. That or companies must be called out for other ethical breaches, such as the concerns around employment cited by PGGM for its exclusion.Alternatively, funds must canvass their members for their opinions on tobacco and see whether they wish to exclude it, regardless of the potential cost. One of the world’s largest pension investors might soon reverse a long-standing decision to divest tobacco. Should it re-engage with the industry, simply in a pursuit of profit, asks Jonathan WilliamsOne of the world’s largest pension funds, the California Public Employees’ Retirement System (CalPERS), may soon reverse a 15-year-old decision to divest tobacco after research showed it had foregone $3bn (€2.6bn) in returns.The $293bn fund’s investment committee on 19 April signed off on a two-year study into the re-admission of 22 tobacco stocks, allowing it to canvass its stakeholders over the change in strategy.In papers prepared for the committee, CalPERS admitted that the question of whether to invest or divest various sectors, including tobacco, had become a “difficult and complex issue”.
London, United Kingdom | AFP | English Football League clubs are risking bankruptcy by chasing promotion to the Premier League where they face “economic exhaustion” trying to compete with established sides, financial experts said on Tuesday.Between the 2008-09 and 2015-16 seasons, 19 clubs gained promotion from the Championship to the top flight, with Hull, Norwich and QPR going up twice and Burnley three times.Of these, only Crystal Palace avoided making a loss, with average losses among the 19 of more than £300,000 per week, said the report by Vysyble.Most clubs made money in their first Premier League season but after four years just one in four was still in the black.One in three of the clubs was immediately relegated and two in three were down again within three years.The “Over the Line” report highlighted the “economic exhaustion” caused by trying to compete with the more established Premier League clubs.Vysyble’s Roger Bell said many fans and owners of clubs in the English Football League (EFL) see promotion to the top flight as a “golden ticket to untold riches” but in reality trying to stay in the Premier League is “ultimately loss-making”. Share on: WhatsApp This “financial over-exertion” can lead to long-term problems, Bell said, which cannot be solved by parachute payments to relegated clubs, even though they can now total more than £90 million ($119 million).“EFL clubs who spend beyond their means are, in fact, risking their futures by chasing a dream that is just that, a dream, and one that is actually more likely to end up as a financial nightmare,” Bell added.According to the report, Blackburn, Bolton and Fulham are examples of this, while both Aston Villa and Sunderland face similar challenges.But a spokesman for the EFL said the league was in a strong financial position and that no club had been through an insolvency process for several years.“Reports of this nature inflame the position and confuse the reality of the situation for supporters,” he added.The Premier League declined to comment on the report.