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Monday, June 11, 2007

Space Shuttle Atlantis docked with the International Space Station yesterday, and astronauts James Reilly and Danny Olivas were planning their first spacewalk today.

The shuttle docked at 3:36 p.m. EDT (1736 UTC) yesterday, doing an end-over-end flip over South America to let the International Space Station crew photograph the shuttle’s heat shield. Called the “Rotational Pitch Maneuver”, the move is now routine.

In today’s spacewalk, scheduled for 17:53 UTC today, Reilly and Olivas, with the help of a giant robotic arm, will install a new set of solar panels to the station.

After lift-off on Friday from Kennedy Space Center, Atlantis suffered a triangular four-inch by six-inch (10 centimeter by 15 centimeter) tear on a thermal blanket that protects the left side maneuvering rocket pod. Also, small pieces of foam broke off from its external fuel tanks.

Mission chairman John Shannon said he was “leaning toward” ordering another spacewalk so that the tear in the blanket could be repaired.

Thursday, May 6, 2010

The Greek parliament has approved an austerity bill proposed by the government to help rescue the country’s ailing economy.

The proposal, which includes increases in taxes, as well as salary and pension cuts, passed with 172 members of parliament supporting, 121 opposing, and several abstaining; the proposal needed at least 151 votes to pass. There are 300 total parliament seats.

The vote comes after a debate that took the entire day. Meanwhile, rallies and strikes are being held around the country to protest against the measures; the protests have occasionally turned violent, with a firebomb attack on a bank killing three people yesterday.

The Eurozone and the International Monetary Fund had asked for austerity plans to be implemented so that Greece can access a rescue loan package worth US$146 billion in order not to default on debts. The austerity programme is estimated to save $38 billion. Greece also aims to lower the public deficit to less than 3% of the GDP in four years; at the moment it is at 13.6%.

Prime minister George Papandreou described the situation to parliament ahead of the vote, saying: “The situation today is simple – either we vote and implement the deal or we condemn the country to bankruptcy […] The future of Greece is at stake. The economy, democracy and social cohesion are being put to the test.”

Papandreou also expelled three Social deputies from his parliamentary team when they abstained from voting; however, his bloc still has a parliament majority of 157 MPs.

Finance minister George Papaconstantinou also commented that Greece will default on some of its $12 billion debt on May 19 if action is not taken, saying: “The state’s coffers don’t have that money. And because the only way for the country to avoid bankruptcy and suspension of payments is to take the money from our European partners and the International Monetary Fund.”

Opposition parties, however, say the measures will put too heavy a burden on the populace; the leader of the conservatives, Antonis Samaras, commented: “The dose of the medicine you are administering is in danger of killing the patient. You know that these measures have sparked a social explosion […] The citizens of this country have to believe there is a way out. Because whoever cuts pensions of €700 cannot convince anyone.”

Friday, May 12, 2006

Peter Costello’s budget announcement has led to rejoicing for small businesses, but the lack of joy for those pushing for radical corporate taxation reform has led to many businesses asking “what about us?”

Personal taxation and small business have been the big winners after this year’s federal budget. Although dampened by the twin economic threats of rising interest rates and petrol prices, there should be a reasonable amount of real income savings for both low and high income earners, with those receiving Medicare, or a superannuation benefit, privy to an even lower level of taxation (0% for those on super benefits).

Small business also has benefited from the Howard government’s 11th annual budget, with them receiving a higher level of reducing depreciation, leading to a higher level of deductions in the years following the uptake of new technology or other capital. They are also privy to a AU$435 million dollar tax cut to compensate for their changing accounting requirements under the government’s new AIFRS reporting standards, as well as increasing the uptake of both the small business tax relief scheme and CGT (Capital Gains tax) Concessions.

The budget was not a complete loss for big business however, as superannuation laws have been tweaked to streamline contribution and payment rules previously impeding those with multitudes of staff.

But this is not enough, says Big 4 accounting firm Ernst & Young. In their newly published paper “Taxation of Investment in Australia: the need for ongoing reform”. In it they lead the charge for a greater streamlining and organization of the corporate tax system in Australia, submitting that it will lead to reductions in “disincentives to work save and invest in Australia [as well as improving] the international competitiveness of Australian businesses.” This follows from a recent report brought out by Mr. Costello himself about the need for tax reform in Australia.

A budget night Mr. Costello was notably coy about any future reform of corporate tax in Australia. He alluded to the report by his ministers but kept from outlining the government’s plan precisely.

Saturday, September 26, 2009

The Iranian government has announced that the nation will be participating in a missile defense test which could take place as early as tomorrow.

According to the IRNA, Iran’s official news agency, the test is an annual exercise aimed to “maintain and develop” defense capabilities of the Iranian Revolutionary Guard.

The exercise is named ‘Great Prophet 4’ and will involve shooting a variety of live missiles at targets. Reports say the drill will be conducted in several unknown locations and will last for several days. The exercise also falls on the Jewish holiday of Yom Kippur.

The announcement comes just hours after the Iranian government stated that the nation was building a second nuclear power facility. The announcement was made in a September 21 letter from the Iranian government to the United Nations Security Council that a second nuclear plant was being constructed in the city of Qom.

Sunday, November 8, 2009

China has offered Africa concessional loans worth US$10 (€6.5) billion as part of a host of new measures aimed at improving the economy of African nations. The announcement was made at the opening of the Forum on China-Africa Cooperation (FOCAC) in Sharm el-Sheikh, Egypt. Leaders of nearly 50 African countries are attending the two-day conference.

China had already stated today at the 3rd Conference of Chinese and African Entrepreneurs, held immediately before the FOCAC, that Chinese firms would be encouraged to invest in Africa, while both sides would work together to improve the tourism, telecommunications and finance industries. China also said that governments should work with businesses to ensure co-operation between China and Africa.

As well as the loans, made over three years, China will write off the debt of Africa’s poorest countries, build 100 African green energy facilities and systematically lower import duties on 95% of all African products exported to China. Another promise is a loan of one billion dollars aimed at small and medium sized businesses in Africa. There will also be efforts to promote each other’s culture and increased medical assistance to Africa. Medical assistance comes in the form of 500 million yuan (US$73.2 million) of goods for the 60 hospitals and malaria centers China has already built, as well as 3,000 doctors and nurses. Roads will also be improved.

China also plans to assist with satellite weather monitoring, to help combat desertification and work within the urban environment, all aimed at reducing global warming. The new energy facilities will focus on solar, biogas and small-scale hydroelectrical installations. Another new measure is a promise to aid African farmers to ensure the continent is fed, increasing the number of demonstrations of agricultural technology in Africa to 20 and sending 50 teams of agricultural technology experts to the continent. Training in agricultural technology will be provided to 2,000 people.

“The Chinese people cherish sincere friendship toward the African people, and China’s support to Africa’s development is concrete and real,” said co-chair Chinese Premier Wen Jiabao as the FOCAC opened up, adding “Whatever change that may take place in the world, our friendship with African people will not change.” He described this friendship as ‘unbreakable’. Two years ago China pledged US$5 (€3.37) billion at the last FOCAC in Beijing and now, according to Jiabao, “China is ready to deepen practical cooperation in Africa.”

China has fulfilled its 2006 pledge, investing a total of US$7.8 (€5.26) billion in Africa last year alone. 49 African countries are represented at the FOCAC, which was created in 2000, although Jiabao noted that relations between China and Africa go back fifty years. China had already forgiven or reduced the debt for thirty nations at that FOCAC summit.

According to Chinese state-owned paper China Daily, trade between China and Africa increased by 45% last year, to give a total value of US$107 (€72.1) billion, a tenfold increase since 2001 and up from US$491 (€331) million in 2003. The Chinese have a 9.8% market share, the largest of any nation, according to the U.S. Commerce Department. China has paid for schools, hospitals, malaria clinics and Chinese scholarships for African students. 50 more schools are to be built and 1,500 people trained to staff them.

Since 2006 Chinese energy firms have committed to spend at least US$16 (€10.8) billion securing African oil and gas. China’s Sinopec Group, an oil giant, bought up Addax Petroleum Corporation from its Swiss owners that year, gaining control of oilfields in Nigeria, Cameroon and Gabon. China promised earlier this year to spend US$9 (€6) billion on infrastructure in the Congo in exchange for mineral deposits for mining operations.

Jean Ping, leader of the African Union, said the told those at the conference that the money is coming at an opportune time, because African growth was “totally compromised” by the global financial crisis. Ping said one of the lessons learned is that the world is paying for “the irresponsible and lax behavior” of large financial companies whose philosophy was to make short-term profits.

Not all Africans are happy with China’s increasing involvement in their continent. Trade practices are a concern for some, with a view that China exploits Africa for raw materials before selling back finished goods. Among these are Egyptian Trade and Industry Minister Rachid Mohamed Rachid. Egypt is the richest nation in the Middle East and is discussing this perceived issue with China. Rachid told Bloomberg “What is a worry for me is if competition is unfair. That is where we are unhappy.” Jiabao described the trade as being based on “win-win programmes… and transparency.”

Others in Africa are delighted with the situation. “We want more investment from China,” Tanzanian President Jakaya Mrisho Kikwete told the forum. Egypt’s own President Hosni Mubarak talked of “peace, security and growth,” and of “boosting cooperation between China and Africa.”

Jiabao also used his speech to respond to criticisms that China worked with nations regardless of their human rights record, such as Sudan, whose President Omar al-Beahir is wanted on a warrant issued by the International Criminal Court for war crimes. “Africa is fully capable of solving its own problems, in an African way,” he said, adding that “China has never attached any political strings […] to assistance to Africa.”

Beshir thanked China in a speech for diplomatic work in Sudan, including working to defuse the Darfur conflict, which the United Nations says has left 300,000 dead. “We express our deep appreciation for China’s efforts in backing the comprehensive peace agreement in Sudan and its peace efforts in Darfur,” he said, referring to a peace deal between the northern and southern parts of his country. “We thank China particularly for backing efforts by our countries to achieve peace and stability in Africa’s zones of conflict.” Jiabao said China was willing to work towards “the settlement of issues of peace and security,” in Africa.

A further criticism has been that China has brought in Chinese workers and used their own knowledge, instead of training locals. Jiabao’s speech indicated an intention to co-operate better in the fields of science and technology, as well as improve training for African students on technical courses.

“Why do some only criticise China?” asked Jiabao. “Is this a view representing African countries, or rather the view of Western countries?”

Wednesday, February 23, 2005

On Monday, at 10.14 pm UTC, the Wikimedia server cluster experienced a total power failure, taking down Wikipedia, Wikinews, and all other Wikimedia websites.

The servers are housed in a colocation facility (colo) in Tampa, Florida, USA. They occupy two racks, with each rack receiving electricity from two independent supplies. However, both supplies have circuit-breakers in them, and both opened at the same time, leading to a total power failure. All computers immediately went down. It’s normal for fire safety regulations to prohibit uninterruptible power supplies in colos, with the colo providing its own UPS and generator instead. The circuit breakers were on the computer side of this emergency power system, so none of the computers continued to receive power to survive the breaker trip or shut down safely.

The actual reason why the circuit breakers tripped is currently unknown.

When power was restored, it was discovered that most of the MySQL databases that store the data which makes up Wikipedia et al had been corrupted. The main database and the four slaves had all damaged the data on their hard disk drives beyond the ability of the auto-correction to repair. Only one copy survived safely, on a machine that is used for report generation and maintenance tasks, which remained 31 hours backlogged while catching up after an unusually heavy update load during the previous week.

Volunteer Wikimedia engineers worked through the night rebuilding the databases from the sole good copy onto the other servers. The Wikipedia database is over 180Gb in size, making the copying process last 1.5 – 2 hours for every server it was performed upon.

Regular back-ups of the database of Wikipedia projects are maintained – the encyclopedia in its entirety was not at risk. The last database download was made on February 9; all edits since then could only have been laboriously rebuilt from logs and recovered from the damaged database requiring much more time and effort.

Limited read-only service was established late Tuesday afternoon, with editing becoming possible 24 hours after the power failure. Final repairs continue now, as well as upgrades to prevent similar issues in the future. Server-intensive features, such as categories and ‘watchlists’ that display recent changes to selected articles to registered users, remain disabled to ease the load on the recovering systems.

The process which led to the damage originated with the operating system, disk controllers, or hard drives failing to flush the data correctly.

If the power to a database server is cut mid-write, the database may be corrupted and unreadable, however the operating system, hardware, and software are designed to make this very unlikely. In a previous incident in 2004 power was also lost to a server but the database was undamaged.

To avoid such damage, each database server saves a copy of an edit to be applied to the database on a separate storage system before making the actual update to the database itself. This so-called ‘write-ahead logging’ should ensure that in the event of a system crash, the database can be rebuilt from a ‘last-good’ state by replaying the edits saved in the log.

Earlier this year popular blogging site LiveJournal suffered a similar power failure when another customer at their colocation facility pressed an Emergency Power Off button, intended for use only by firefighters. The company suffered database corruption similar to that seen at Wikimedia.

LiveJournal are now fitting UPS to their servers to ensure that they have time to shut down safely in the event of a power failure. Wikimedia was said to be investigating the possibility of fitting similar equipment at the time of this failure.

Several pundits have suggested that the use of another database, such as the proprietary database Oracle or the free PostgreSQL, would have avoided the database corruption seen at the server cluster. A post-mortem of the incident show the failure was in the operating system, or the hardware, or some combination of the two. LiveJournal, which also uses MySQL, reported similar database corruption after their power cut.

The Wikimedia foundation only allows the use of free software on its systems, and future versions of the Mediawiki software will support the PostgreSQL database.

Users are reminded that during times of system failure or excessive demand, they can still search Wikipedia using Google. The articles may be viewed using Google’s cache.