Category: Science &Technology

The world’s tallest tower is the fabulous SKY TREE of Japan. It measures 634 meters into the sky making it the biggest new landmark. It opened to the public on Tuesday.

Nearly 8,000 visitors were expected to take high-speed elevators up to the observation decks of the 634-meter (2,080-foot) tower to mark its opening.

Some reportedly waited in line more than a week to get the coveted tickets for a panoramic view, though Tuesday ended up being cloudy in Tokyo.

Skytree is recognized by Guinness World Records as the tallest tower, beating out the Canton Tower in China, which is 600 meters (1,968 1/2 feet).

The world’s tallest structure is Dubai’s Burj Khalifa, which stands 828 meters (2,717 feet). That’s in a different category because it’s a skyscraper, not a tower.

The Skytree will serve as a broadcast tower for television and radio, along with being a tourist attraction. It replaces the 333-meter-tall (1,092 1/2-foot-tall) Tokyo Tower — a symbol of Japan’s capital since 1958 — as the broadcast hub.

Aimed at increasing Rwanda’s internet capacity, the Rwanda Development Board has awarded a 6.7 million US dollar contract to Tanzania Telecommunications Company Limited (TTCL) to provide 1.244 GB/sec of internet bandwidth.

The bulk international bandwidth has been procured off the World Bank grant through the Regional Communication Infrastructure Programme-Rwanda (RCIPRW).

The project aims at lowering prices of internet capacity as well as extending the geographic reach of broadband networks in the country.

“Rwanda strongly believes in regional integration and is strategically positioned as a link between East Africa and Central Africa. What we are witnessing today is an important step in Rwanda’s efforts to grow as a service hub in the region,” said Patrick Nyirishema, the Head of Information and Communication Technology department at the Rwanda Development Board.

Nyirishema explained, “For Rwanda to achieve higher and sustained growth performance through transforming itself into a service-based economy, it has embarked on developing the ICT infrastructure and services.”

While noting that Rwanda faces significant challenges in getting access to low-cost international connectivity as a landlocked country, Nyirishema explained that; “This purchase of bulk international capacity on regional and international networks will significantly boost our vision to make bandwidth a commodity on the Rwandan market.”

He added that if broadband becomes a commodity on the Rwandan market, it would stimulate deployment of a wider and improved range of services to consumers at affordable prices.

“We are using demand aggregation for bandwidth to drive down prices of internet capacity, to stimulate investment into regional network infrastructure and to ensure that affordable access is made available to all market participants on an open-access basis,” added Nyirishema.

The CEO of TTCL, Said Amir Said noted that this contract is more than just business because it links two sister countries.

“This is just the beginning. Not only TTCL but also the government of Tanzania is honoured to work with Rwanda to promoted the East African countries,” noted Said.

Within two weeks of signing of this contract, TTCL will provide part of the capacity and will progressively scale up to the full contracted capacity in less than six months.

A half-lying in a wooden chair, completed by a board on which is fixed a metal housing, Uwayezu Martin, 25, a pedal force to recharge with small LED lamps (LED).

This pedal generator of simple design and craftsmanship has changed the lives of thousands of Rwandan countryside, living in areas without electricity, bringing them to light for some cheap and a new revenue stream.

Fisher, Daniel sets his traps Ntibaziyandemye little before dusk, among dense brush in the river Akanyaru, chasing mosquitoes of the hand, ear alert to detect the possible presence of crocodiles that infest the place.

At night, he returns to venture into the dangerous water to collect his catch, a small LED lamp on the front.

“Previously we were using flashlights to find our traps at night,” said Daniel. “But the batteries were so expensive that our profits were meager. Now with these new bulbs, you can fish for a week for less than what it was costing us before. ”

When discharged, Daniel carries his lamp to the merchant who sold it to him and who, like Martin, is the reload pedal strokes.

The generator is a small box approximately 30 cm high, with each side of pedals. We must ride just 20 minutes to recharge and give them five lamps up to 25 hours of battery life, about a week of use for most people.

Every minute and 375 minutes pedaled generates light, a system much more efficient than solar energy, says the company Rwandan Nuru Energy, the source of this invention that allowed him to win the 150,000 euros in 2008 to reward Price Lighting Africa, an initiative of the World Bank.

The company sells on credit generators and lamps to local retailers. They sell the lamps, then recharged every week for one low price.

Nuru Energy “gave me six months to repay the credit of my first lamps, but with the money earned by recharging, I was able to repay in two months,” said Martin Uwayezu.

“I was poor, now I’m a businessman,” he says proudly.

Attack the markets in East Africa and India

Most of rural Rwanda does not have access to electricity and people light up with kerosene and cooking over a wood fire. Over 90% of households in Rwanda use kerosene lamps whose fumes are harmful.

“In addition to being dangerous, it is inefficient and expensive,” explains Holazman Sloan, marketing director Nuru. “Families are spending between 10 and 25% of their income on oil for the only light.”

The boss and co-founder, Sameer Hajee, said he studied the energy requirements and practices of rural Rwandans to imagine a clean and inexpensive technology that can compete with oil.

“Kerosene is expensive, harmful, polluting and dangerous. But it is also portable, reliable and available, “he says.

In addition to the LED lamps, Nuru Energy plans to expand the use of its generators to recharge the mobile phones and other appliances in rural areas without grid.

After launching his first pedal generator in Rwanda, Nuru Energy is developing pilot projects in other countries such as India.

The company now boasts 10,000 customers in Rwanda and seeks to expand to other countries in East Africa such as Kenya, Tanzania and Uganda by the end of the year.

REPRO Ltd is a little known company in Rwanda. It was founded in 2007 with a mission of bringing energy to the rural population.

In 2008, it started a project on river Rwishwa, in Western Province, called Murunda Micro Hydro Power Plant aimed at producing electricity and availing it to the local population. But, this being done within the private approach.

We are used to big parastatal companies exercising this activity of producing and distribution of energy.

But our government always in promoting the private sector scrapped off the law that gave RECO then, the monopoly of this activity thus allowing the private business to invest in this high tech activity.

The Managing Director Gregory Tayi of this company was approached to give a brief view of the project:

Your Company was recently invited in the international conference namely “the First High Level meeting of the Africa-EU Energy Partnership in Vienna”. Would you please tell us why you were invited?

Gregory Tayi : Our Company was invited as the first ever privately initiated, owned and operated micro hydro plant in the region to discuss the private sector approach in renewable Energy and share its success story as a role model private initiative.

Would you tell us briefly about this company?

GT: REPRO is a private company with mission of producing, distribution and selling of energy. It is a young company and so far has realised only one project: the Murunda Micro Hydro Power Plant. The success of this project was the reason behind our invitation in Vienna.

For your information the Minister of State in Charge of Energy officially inaugurated this plant on May 25, in presence of Netherland’s Ambassador who financially supported us through PSP Hydro GTZ project, international community such as GTZ, DFID, World Bank, and the Belgian Cooperation also was present, delegation from the Ministry of infrastructure just to name a few.

Your success seems to have echoes outside but little known in Rwanda, why is it?

GT: I would ask you the same question! But I think that people here do not realise what energy and renewable energy in particular is in our modern time. The world needs energy, and this need is exponentially increasing.

If we do not look around how we can satisfy this need, we are running into trouble of perpetual poverty, as energy is the engine of development.

But the outside world is aware of it. The government of Rwanda knows it too. But the government cannot do all, it can change laws but it is up to everybody to be sensitized and do what he can in this area.

That is why the law that gave RECO the monopoly of this business changed and was opened to private entrepreneurs too.

Let us talk about this project. We assume it is not an easy task to enter into this business. What were the challenges that you met?

GT: Challenges were of 2 kinds. Technical and Financial.

Would you explain briefly these problems?

GT: On one side as you may know, a hydropower plant whatever the size, requires mechanical, electrical and Civil engineering. The design and the execution needs expertise which is costing too much and not easy to find.
On the other side this project needs big financial capability.

Though PSP Hydro granted us with a subsidy of 50%, the additional part was not easy to put in place.

Our banks are not used to finance such project and it was not easy to convince them. And when they agreed, the interests are based on the usual commercial ones and not perceived on the basis of a long term project.

Therefore we obtained a bank loan in same conditions as short run business.

Fossils found in China in 1970’s and 1980’s have been subjected to intense scrutiny by Australian and Chinese scientists who say the fossils might represent unknown people. They have stopped short of calling them a new species.

The scientists believe they have identified a new group of Stone Age people, dubbed the Red Deer Cave people, who lived alongside modern humans in China as recently as 11,000 years ago.

The fossils were discovered in the 1970s and 1980s but have only recently been subjected to intense scrutiny.

Professor Darren Curnoe from the University of New South Wales was one of the team leaders that looked at the remains.

“We’ve discovered a new population of prehistoric humans whose skulls are an unusual mosaic of primitive features, like those we see in our ancestors of hundreds of thousands of years ago, some modern traits, which are similar features to what we see in living humans, as well as some unusual features,” he said.

He says the Red Deer Cave people are anatomically unique in the human evolutionary tree.

“They have rounded brain cases but their brow ridges are quite prominent, their skull bones are quite thick, their faces are short and quite flat and they’re tucked under the frontal part of the brains – they’re modern characteristics,” he said.

“But they have a broad nose, the jaws jut very forward of the face and they lack a human-like chin.

“Their brains were moderate in size and the frontal part of the brain, what we call the frontal lobe, was quite modern-looking, but the posterior parts are quite primitive-looking, and they also had very large molar teeth.”

He says the Red Deer people would have shared the land with modern-looking people as farming was starting in China as recently as 14,000 years ago.

“One of the sites of the human remains are dated to around 14,500 years ago and the other site 11,500 years ago,” he said.

“And at this time in China there were very modern-looking people who were living immediately to the east and to the south of this population … and these modern humans were in fact beginning the early stages of farming, so there were economic transitions that were going on.”

The scientists have called the group the Red Deer Cave People after one of the main sites where they come from, Maludong, which literally means Red Deer Cave.

But they have stopped short of claiming the discovery of a new species.

“At this stage we’ve actually been quite reluctant to classify them, that is to place them into a species, whether it be Homo sapiens or something else,” Professor Curnoe said.

“In the study of human evolution, there’s a major ongoing controversy, or an open question if you like, about just how we actually define our own species Homo sapiens, biologically.

“They are a human-like group, technically we call them hominids. They’re clearly a population that’s quite closely related to humans and possibly closely related also to the Neanderthals.”

There has been one unsuccessful attempt to extract DNA from the remains, and Professor Curnoe says they are trying again.

“If we could extract ancient DNA from these fossils, that would really be a wonderful thing because it would allow us to really decisively test some of these ideas that we’ve developed, hypotheses that we’ve developed directly from the bones themselves,” he said.

“We’ve actually expanded our collaboration to work with a couple of international ancient DNA laboratory specialist groups who have been very successful in amplifying ancient DNA.”

Source: PLos One

Bharti Airtel Limited has regiserted significant milestones in its endeavor to build a ‘green’ environment friendly mobile network aimed at reducing its carbon footprint in Africa.

Airtel is currently established in Rwanda where they are also constructing their Home. A lot of technical activities are ongoing. However, they haven’t announced when they will officially launch their services.

The Company says in the last one year, it has reduced telecom sites running solely on diesel by more than 50% by overcoming the challenge of lack of grid connectivity through use of innovative models such as Hybrid Battery Bank.

By 2013, the Company aims at completely eradicating dependence on diesel to power its network. This means no telecom site of the company will rely solely on diesel power 24 hours a day.

Hybrid Battery Banks collect the excess energy produced by the diesel powered generator in a battery that powers the site once the generator in switched off reducing the use of diesel by up to 14 hours a day.

Close to 60% of Bharti Airtel’s telecom sites in Africa are now powered using the Hybrid model resulting in major reduction in emissions and also operating costs for the company.

The telecom giant is targeting over 70% of all its sites to be powered by the Hybrid model by end of 2013. Airtel is also working on the use of solar and wind power to power its telecom sites.

Eben Albertyn, Chief Technical Officer, Bharti Airtel, saiys,“Our first priority is to reduce the number of sites that are completely reliant on diesel generators by connecting the sites to electricity grid in areas where this option is feasible.

Where it is not, alternative forms of power supply are explored including Hybrid Battery Banks and solar/wind power. This is our part in conserving the environment”.

Bharti Airtel said that it has already made significant strides in using solar panels to power sites in select markets. Over the last two months, 105 solar sites have already been set up in Niger reducing the use of diesel generators from 24 hours a day to a meager 3 to 4 hours.

Uganda will from March 21-24th host an international conference on ICT for Africa at Makerere university business school under the theme; ‘Africa’s E-Inclusion: Defying the Odds and Leading the Way in Global ICT Innovation’.

Digital technology has changed numerous activities in the world and continues to do so. The digital revolution has already matured in developed countries however, developing countries, especially in Africa, are yet to realize the full potential of the benefits of technology.

It is true that Africa has in recent years made tremendous progress from being a technological desert to a growing technological forest.

The adoption and diffusion of Information and Telecommunication Technology (ICT) in Africa is growing as evidenced by the upsurge in mobile markets and emerging innovative application in e-banking, e-business, telemedicine (e-health), e-learning, e-government, e-democracy, e-agriculture, e-procurement and more.

As we entered the new millennium, Africa progressed from technological desert to emergent sustainable growth in ICT. Within the first decade of the millennium, several innovations emanated from African countries, such as, the continent is also joining the league of ICT producing countries and Africa is witnessing increased capacity for consumption.

While the problems being reported on the development of ICT in Africa might have not completely disappeared, the current challenges are definitely different. For example, the problem is no longer about access to modern ICT devices but the continent is now being confronted with the effect of the adoption and utilization of ICT.

Electronic payments system is taking root on the continent where public servants are paid salaries and pensioners receive their pension directly to their accounts.

Mobile commerce through mobile/cell phone transactions without going through traditional banking systems has penetrated both rural and urban centres of some African nations. East African countries have embraced the M-Commerce.

Automated teller machines (ATM) have spread across the continent but this technological adoption faces issues of security and identity theft. Teledensity is no longer an issue but the effect of the telecom on the environment is posing a serious threat.

These concerns are now similar to the issues in the western world. It is time that the concept of digital divide be re-examined and the stock of innovation and technological advancement from Africa for Africans be taken and reported.

There are numerous cases of African championed initiatives for Africa which are worth showcasing. From launching of submarine fibre optics cable linking Africa to Europe to Financial Switching backbone. Such success stories abound.

With this background, Africa is ready to position itself for the three foremost interrelated technological advances namely; the mobile platform, cloud computing and software as a service. All these will be examined in the context of green computing or green ICT.

The conference will bring together some of Africa’s leaders in this area to discuss creation of culturally sensitive applications that are applicable in the African context.

The “One Laptop Per Child” OLPC project will provide extra 100,000 laptops to ensure that all 416 administrative districts of the country have computers in every school.

The project, launched in 2008 by President Paul Kagame, has already distributed 80,000 laptops in 145 schools across the country.

“We will receive additional 100,000 laptops in May 2012,” said Nkubito Bakuramutsa OLPC coordinator at the Ministry of Education.

He explained that the first phase, which focused on five schools per district, will end soon.

“We plan to complete the first phase by the end of March. For now, all districts are covered, we move towards sectors. We want to ensure that all sectors of 416 countries have a school where the OLPC is operational, “he said.

Commenting on the installation of electricity in schools where there is no electrical current, Bakuramutsa has indicated they have an approach that varies with the location of the school.

“For schools that are far from the gate, we work closely with the project support the deployment of electricity within the Department of Infrastructure to install solar energy.Closer to the grid, we work with district officials and local leaders of the EWSA to complete the connection of schools to the national grid, “he said.

The OLPC project has trained 1,500 teachers and principals of schools and has a second round of training which will cover 1,200 others.

The computers were distributed free by the government, there is also another arrangement where private schools buy these computers at a discounted price of $ 200 per computer (approx. 120,000 Rwandan francs).

According Théogène Sibomana, headmaster of the Kigali camp, the children learned the various applications using laptops.

“They are interested in using laptops and this led us to double the time that children spend on the machines at school,” according Théogène Sibomana.

The OLPC program will provide access to digital course to all the teachings.

The government of Rwanda has announced in a decision to help students from East Africa who want to study in Carnegie Mellon University in Rwanda by paying 50% of the whole tuition fees.

Carnegie Mellon University (CMU-Rwanda), one of the best universities in USA, was established in Rwanda in a way to facilitate Rwandan students and east Africa as a whole to deeply access best technology sciences (ICT).

It is supposed that students studying in this university in 2012/2013 academic year should pay 38,900 US$. From the decision, a student studying at CMU-Rwanda is to pay only 19,450 US$.

Prof. Michel Brezy, a lecturer at Carnegie Mellon University said that the decision of installing this university in Rwanda was from His Excellency Paul Kagame’s wish.

He said, “President Kagame is the one who chose this university to be brought in Rwanda and I am sure it will contribute much to the Rwandan education as we are here to help Rwanda in its development through education.

Brezy added that it is much more advantageous for Rwanda to study the same courses as USA is it will make Rwanda have many experts in technology and they are going also to discover many programs with regard to the region.

Vincent Biruta had said before that Rwanda is proud of having Carnegie Mellon University as it had been also said by the President Paul Kagame the time he was visiting this University in US last year.

He said, “this shows that Rwanda is a model country in ICT.”

Bruce Krogh, the head of CMU-Rwanda said that he is happy with the government’s decision of reducing the tuition fee for students in Rwanda.

Carnegie Mellon University in Rwanda (CMU-Rwanda) started with short time courses basing on professional development which include 3 lasting 7 weeks, 4 lasting 4 days, and 30 to cover within 6 weeks.

The graduates of these courses will be awarded same degrees as those studying in US as they will be having the same lecturer.

After these short time courses, CMU-Rwanda expects to start Master’s Degree courses on Science in Information Technology (MSIT).

Speaking to the media, Krogh said that they preferred Master’s level because it is the level in which a student conducts as much research as he can.

He said, “a student at Master’s level does not need a lecturer in front of him all the time but it is his part to carry out researches which makes him very complex and creative in as short time as possible.”

The CMU-Rwanda started on 14th February 2012 and applications, for students wishing to attend it, should be not later than 21st April 2012 or contact www,cmu.edu/rwanda.

Carnegie Mellon University is classified among the first universities in USA and Rwanda is the first country to accept it in.

It is located at Kacyiru in the 4th floor of the Telecom House building.

Scientists have asked themselves why zebras have stripes; many have speculated that they might be a defense against predators such as lions.

A lion, which is the zebra’s natural predator, is colourblind which means that it would be unable to tell the difference between the grass and the zebra.

However, scientists later discovered that the primary purpose of a zebra’s stripes is actually to repel horseflies.

“We conclude that zebras have evolved a coat pattern in which the stripes are narrow enough to ensure minimum attractiveness to flies,”

This discovery was published in the “Journal of experimental biology” which demonstrates how a zebra striped horse model attracts far fewer horseflies than non stripped horses because Insects prefer animals with dark skin to animals with white skin.

Although scientists have come to a fascinating conclusion about the mystery of zebra stripes and horseflies, the study is likely to have a long term impact on both professional scientists and future scientists.