You are here

Features

Features section

Climate change: can hummingbirds take the heat?

By - Dec 06,2017 - Last updated at Dec 06,2017

Photo courtesy of www.thespruce.com

 

PARIS — Extreme heat sometimes forces hummingbirds to seek shade instead of foraging for food, researchers said on Wednesday, warning that global warming could test the tiny birds' capacity to adapt. 

With hearts beating more than 1,000 times a minute, hummingbirds need to feed constantly, which means they can ill afford to spend time dodging sunshine, according to a report in the journal Royal Society Open Science.

"They cannot go without eating for even a part of the day," said lead author Donald Powers, a professor at George Fox University in Oregon. 

"When temperatures get hot, hummingbirds remove themselves from extended direct exposure to the sun for protection," he told AFP. 

"Climate change might make body-temperature maintenance increasingly difficult."

Even their sex lives could suffer — observation during breeding season suggested a disruption of their ability to interact socially.

"It is possible that higher temperature could impact reproduction," Powers said.

The cascading effects of global warming even extend to the plants upon which hummingbirds depend for both sustenance and shade.

If the mostly tropical birds move to higher ground or cooler climes in response to climate change — as many species already have — the flowers from which they draw nectar may no longer be as abundant.

"The problem with rapid shifts in distribution is that the birds can move more quickly than the plants," Powers said.

One of nature's crown jewels, more than 300 species of hummingbirds are found throughout the Western hemisphere. 

On average, they consume half their weight in sugar water every day.

 

Nightime threat 

 

The smallest, the bee hummingbird of Cuba, measures barely six centimetres from beak to tail, and could perch comfortably on the tip of a person's little finger. 

In the study, Powers and his colleagues used infrared thermal imaging to explore how the birds — which flap their minuscule wings 50 to 200 times a second — evacuate body heat at different temperatures. 

They also observed how, in the wild and the lab, hummingbird behaviour changed when things got hot.

"I recall one day last year at one of our Chiricahua Mountain study sites [in Arizona] when temperature exceeded 44ºC for an extended period, and the birds were clearly struggling," Powers said.

Climate change may pose a threat to hummingbirds at night as well.

To conserve energy, most hummingbirds slip — for at least a couple of hours each night — into a state called torpor, during which their body temperature plunges by 50 to 75 per cent.

If nights are warmer than usual, it limits how much energy the birds can save.

"Climate predictions are for nighttime temperatures to warm faster than daytime temperatures," notes Powers, who said he would soon publish a study focusing on this. 

To "awaken" from torpor, a hummingbird vibrates its wing muscles — something like shivering — to warm its blood by several degrees a minute.

 

Hummingbirds are ready for action well before dawn, evidence that the process is governed by their internal, or circadian, clock.

‘Coco’ repeats as box office winner with $26.1m

By - Dec 05,2017 - Last updated at Dec 05,2017

Photo courtesy of imdb.com

LOS ANGELES — Disney-Pixar’s animated comedy “Coco” easily repeated as the winner of the North American box office with a solid $26.1 million at 3,987 locations during a moderate weekend.

The third weekend of Warner Bros.-DC Entertainment’s “Justice League” finished second with $16.7 million at 3,820 sites, with the superhero tentpole dropping 60 per cent.

Lionsgate’s “Wonder” continued to perform well with $12.5 million at 3,449 venues to come in third followed by Disney-Marvel’s fifth frame of “Thor: Ragnarok” with $9.7 million at 3,148 sites, the fourth weekend of Paramount’s “Daddy’s Home 2” with $7 million at 3,403 venues and Fox’s fourth weekend of “Murder on the Orient Express” with $6.7 million at 3,201 screens.

Awards contenders “Lady Bird” and “Three Billboards Outside Ebbing, Missouri” tied for seventh place with $4.5 million each. A24’s “Lady Bird” expanded by 403 sites to 1,194 and Fox Searchlight’s “Three Billboards” doubled its run to 1,430 screens.

The major studios opted to rely on holdovers during the session and held off on any wide openings. A24 generated strong performance from its limited launch of James Franco’s “The Disaster Artist” with $1.2 million at 19 locations for a $64,254 per screen average. Fox Searchlight’s “The Shape of Water” saw an impressive $166,800 at two theaters and Woody Allen’s “Wonder Wheel” debuted with a solid $140,555 at five sites through Amazon.

Sony Classics’ second weekend of “Call Me By Your Name” posted a stellar $281,280 at four screens for a 10-day total of $908,175. It won best feature at the Gotham Independent Film Awards on November 27.

“Coco” has now taken in $108.7 million in its first 12 days following a 47 per cent decline from its opening. The film, based on the traditions surrounding the Day of the Dead holiday in Mexico, centres on a 12-year-old boy who dreams of becoming a musician. The film has been embraced by critics with a 97 per cent score on Rotten Tomatoes. Disney’s “Moana” performed slightly better during the same period last year with $119.8 million after 12 days.

The studio has not released a price for “Coco”. Disney-Pixar titles are usually budgeted in the $175 million to $200 million range.

“Justice League” has finished its first 17 days with $197.3 million domestically. The movie, which teams up the DC charactersw in the same manner as Disney-Marvel’s superheroes, is the 10th highest-grossing title released in 2017. It has been the lowest performer among the five films in the DC Extended Universe, with “Wonder Woman” grossing $275.1 million in its first 17 days in June and “Suicide Squad” taking in $262.4 million in its first 17 days last year.

Gal Gadot stars as Wonder Woman along with Ben Affleck as Batman, Henry Cavill as Superman, Jason Momoa as Aquaman, Ezra Miller as the Flash, and Ray Fisher as Cyborg as the superheroes team up to save the world. Warner Bros. has not disclosed the production cost, which is believed to be as much as $300 million.

“Justice League” also grossed $35.7 million on approximately 20,375 screens in 66 international markets, bringing the overseas total to $370.1 million and the global total $567.4 million.

Overall domestic moviegoing totalled $104 million, up $8 million from the same frame in 2016 and the biggest post-Thanksgiving weekend in five years, according to comScore.

“The biggest post-thanksgiving weekend since 2012 proves that there was no need for a wide release newcomer to drive large numbers of moviegoers to the multiplex that is already chock full of appealing titles from both the blockbuster side of the ledger and awards season favourites,” said Paul Dergarabedian, senior media analyst with comScore.

 

Year-to-date domestic box office is down 3.9 per cent to $9.86 billion as of Sunday, according to comScore. Even with a blockbuster performance by Disney-Lucasfilm’s “Star Wars: The Last Jedi”, which opens December 15, the final 2017 box office number is likely to finish at least 2 per cent down at the end of the year.

Audi A8 L 60 TFSI: Ahead of the pack

By - Dec 05,2017 - Last updated at Dec 05,2017

Photos courtesy of Nissan

Set to join the already available entry-level V6-powered version of Audi’s all-new and high tech fourth generation flagship the A8 L 60 TFSI is expected in global showrooms early in the new year. Set to be the intermediate A8 model the V8-powered A8 L 60 adds considerable muscle to the existing V6-powered A8 55 models and more handling finesse than range-topping W12-cylinder version expected to go on sale later still.

Driven back-to-back with short and long wheelbase entry-level V6 versions and optioned with four-wheel-steering and active electro-mechanical suspension, the A8 L 60 even proved to be the best drive in the A8 range.

 

Advanced and accomplished

 

A thoroughly accomplished technological tour de force and most advanced among luxury flagships, the new A8 is at least one step ahead of its German rivals and a couple or more ahead of rest. The world’s first level three autonomous production car – in a scale going up to five – the A8’s innovative and advanced features are centred around its Audi AI (Artificial Intelligence) processing capacity and systems, and its 48-volt mild hybrid technology. So advanced is the A8 that the full scope of self-driving features supported by its hardware will be gradually unlocked by software updates as legislation in various markets catches up.

Standard to all models, the A8’s 48V mild hybrid system is charged by regenerative brakes, and operates independent of and without contributing to or corrupting driveline integration and fluency. Instead, it powers various electrical systems without unnecessarily taxing the combustion engine, and allows the car to coast briefly between 55-160km/h, and for the stop/start system to operate from 22km/h, to reduce fuel consumption. Additionally, the 48V hybrid system powers the A8’s optional and fully independent active electromechanical suspension, which is controlled by the A8’s zFAS AI brain leveraging various sensors, radars and cameras to independently control each wheel’s vertical movement through individual electric motors, for enhanced ride comfort and handling prowess.

 

Agile ability

 

Built using lighter yet 24 per cent stiffer aluminium intensive construction, and with improved standard adaptive air suspension, the new A8 is a more comfortable and better handling car than its predecessor. However, with optional electromechanical suspension, and four-wheel-steering, the dynamic gap is even wider. Sublimely stable, planted, comfortable and composed at highway driving as it fluently adjusts to road texture. Longer and with a heavier V8 engine positioned ahead of the front axle the A8 L 60 was, however, surprisingly more nimble, agile and distinctly sportier through winding and narrow country lanes and hill climbs, than even the A8 55 TFSI, the lightest and smallest model in the range.

Carving through narrow and tight corners with the sort of agility and sure-footedness usually reserved for a considerably smaller car, the A8 L 60’s active electromechanical suspension intuitively reads the road, the car’s position and other parameters, to fluently, quickly and accurately adjust wheel position and ride firmness. Meanwhile its four-wheel steering turns the rear wheels in the same direction as the front at higher speeds for better agility, road-holding and tighter cornering lines. The combined result ensured that the A8 L 60 turns in keenly, crisply and with taut grip of the road and taut body control that keeps it flat, composed and poised through a string of switchbacks.

 

Comfort and control

 

Driven before market launch, the A8 60 L’s electromechanical suspension will be even more sophisticated when it becomes available for sale and will feature a predictive element. Demonstrated during a short drive in controlled conditions in a pre-launch W12 engine model, the A8’s electromechanical suspension is even more impressive with its predictive functionality enabled, during which it can raise or lower individual in time to keep the car level and smooth over even significant bumps, cracks and imperfections. Also using Audi AI systems, the A8’s electromechanical suspension can predict a potential collision and raise the body to mitigate to alter the point of collision and protect occupants.

Belying its 5.3-metre length and well over 2- onne weight in its agility through country lanes, the A8 60 L also benefits from vice like road holding courtesy of its Quattro four-wheel-drive. Distributing power with a 60 per cent rear bias and able to alter this allocation, the A8’s Quattro system ensures power goes where it is needed for tidy handling and grip, while an optional limited-slip differential further improves on this. Steering meanwhile is quick, precise and meaty, and with the rear wheels turning in the opposite direction to the front at low speed, the A8 L 60 becomes highly manoeuvrable in urban settings, with a tight 11.8-metre turning circle comparable to a much smaller car.

Generous refinement

 

A statuesque car with sculpted surfacing, great attention to detail and an elegant yet assertive look, the A8’s design focal point is its vast hexagonal grille. Nestled just behind the single frame grille, the A8 L 60 is Audi’s now familiar, smooth, powerful and efficient 4-litre twin-turbocharged V8 engine. Muscular and effortlessly flexible, its quick spooling turbos and short gas flow paths provide terrific off the line responsiveness, generous mid-range versatility and an urgent climb towards its rev limit. With more power and torque unlocked for service in the new A8, it develops 454BHP and a generous 486lb/ft throughout a broad mid range torque band.

 

Swift yet serene, the A8 L 60 accelerates to 100km/h in around 5-seconds and drives smoothly through, slick 8-speed automatic gearbox. Quiet and refined inside, the A8 features cabin high quality leathers, suede, metals and woods and extensive equipment, including a configurable instrument panel, a twin screen high tech infotainment system with haptic buttons and advanced voice recognition. Spacious inside, the long wheelbase A8 L’s rear seats are particularly generous for legroom. A dizzying array of driver assistance systems includes Audi AI’s self driving features, which, when enabled does not require constant monitoring and allows it to stop, start, steer and brake up to 60kph under the right circumstances.

 

TECHNICAL SPECIFICATIONS

  • Engine: 5.6-litre, in-line V8-cylinders 
  • Bore x stroke (mm): 98 x 92mm
  • Valve-train: 32-valve, variable valve timing, DOHC, direct injection
  • Gearbox: 7-speed automatic, four-wheel-drive
  • Drive-train: Locking rear differential and low gear transfer case
  • Gear ratios: 1st 4.887:1 2nd 3.17:1 3rd 2.027:1 4th 1.412:1 5th 1:1 6th 0.864:1 7th 0.775:1
  • Reverse / final drive ratios: 4.041:1 / 4.357:1
  • Power, HP (kW): 400 (294) @ 5800rpm*
  • Torque, lb/ft (Nm): 413 (560) @ 4000rpm*
  • 0-97km/h: 6.5-seconds (est.)
  • 0-160km/h: 17.8-seconds (est.)
  • Fuel consumption, city / highway: 16.8 / 11.76 liters/100km (est.)
  • Fuel capacity: 100 + 40 liters
  • Height: 1940mm
  • Width: 1995mm
  • Length: 5165mm
  • Wheelbase: 3075mm
  • Approach / departure angles: 26.6° / 25.9°
  • Kerb weight: 2750-2800kg (est.)
  • Gross vehicle weight: 3500kg (est.)
  • Towing capacity: 2000kg
  • Seating capacity: 8
  • Steering: speed-sensitive power assisted rack and pinion
  • Turning radius: 12.1-metres
  • Suspension: Independent, double wishbone with active hydraulic damping 
  • Brakes, F/R: Ventilated discs, 4- / 2-piston calipers
  • Tyres: 275/60R20

 

  • Price, as driven: JD98,000 (on-the-road, no insurance)

       *Gross power and torque

The doctor will see you now but often not for long

By - Dec 03,2017 - Last updated at Dec 03,2017

Photo courtesy of bottomlineinc.com

For half of the world’s population, primary care doctor visits last less than five minutes, researchers say. 

Appointments range from 48 seconds in Bangladesh to 22.5 minutes in Sweden. In the US, meetings with doctors average about 20 minutes. 

Shorter consultation times have been linked to poorer health for patients and burnout for doctors, Dr Greg Irving of the University of Cambridge in the UK and his colleagues note in a report online November 8 in BMJ Open.

The researchers reviewed 178 earlier studies written in English, Chinese, Japanese, Portuguese, Russian or Spanish, covering 67 countries and more than 28.5 million appointments. 

Eighteen countries, which account for half of the world’s population, have appointment times less than five minutes, they found. Another 25 countries had appointment times under 10 minutes. 

In developed countries, consultation times seem to be increasing. In the US, for example, appointments are bumping up 12 seconds a year and have moved from 15 to 20 minutes over a short period of time. 

With longer appointments, “you see more health promotion and conversation with patients”, Irving said. 

“The next question is whether patient satisfaction goes up, too,” he told Reuters Health by phone. “Even if you have 30-40 minute appointments, there’s no guarantee patients will be happy.” 

Consultation length seemed to drop in low- and middle-income countries, which may have implications for population growth and treatment options. China, for instance, averages around two minutes for appointments. The government recently announced a new policy to expand the primary care workforce. 

Future studies should look at the added value for each additional minute of consultation, Irving said. The differences between a two-minute appointment and a 20-minute appointment may be obvious, but researchers want to know the difference between what is covered in a 15-minute versus a 20-minute appointment. 

“At what point do qualities such as health promotion begin to creep into the consultation?” he said. “What times help us best manage our patients’ health?” 

300 years of communal harmony

By - Dec 03,2017 - Last updated at Dec 04,2017

City of Christian Love: The History and Importance of Nazareth
Raouf Abujaber
New York: Peter Lang, 2017
Pp. 129

Raouf Abujaber, author of this brief but beautifully rendered book, has had a long, prolific career as historian, businessman, educator and community leader. He was among the first to introduce into Western academia the study of Jordanian society as a field in its own right, with his book, “Pioneers over Jordan” (I. B. Taurus, 1989). This new book on Nazareth makes thirteen books he has published, some in Arabic, some in English.

In the preface, “Reflections from a Childhood in Transjordan”, Abujaber confides that his ties to Nazareth are personal as well as being academic and related to his Christian faith, for his mother came from there, moving to Salt when she married his father. “Although she remained, all her life, a proud Palestinian, she also became a Jordanian… In my childhood my mother used to tell us, at the fireside during those cold evenings, about her life in Nazareth and the chronicles of her birthplace. She spoke highly of Dhaher Al Omar and was proudly enchanted with the friendship and good neighbourly relations with the families around them without distinction between Muslim and Christian.” (p. xvi)

While Nazareth’s distinction in maintaining Muslim-Christian harmony is the predominant theme, a subtheme is the closeness, near-oneness, of Jordanians and Palestinians.

From the early Christian era up to the 1948 occupation, Abujaber traces Nazareth’s shifting fortunes and development under a chain of rulers — Roman, Byzantine, Persian, Arab-Muslim, Crusaders, Ayyubids, Mamluks, Ottomans, etc. Most often, its fate was connected to that of the Galilee and northern Palestine as a whole, but occasionally it was singled out, as when the Ottoman Turks, allied with Germany in World War I, made it their military headquarters. Although this led to construction and provided jobs, overall, the war brought more hardship than benefit to the locals.

In the course of his historical review, Abujaber introduces a variety of sources, from Roman historians and local scribes to accounts by Western travellers, pilgrims and missionaries, most of whom visited Nazareth during their trips to the Holy Land. 

Referring to the first century AD, the author notes: “Nazareth of Galilee, in these times, must have been a village of no importance, but it was the place where Jesus Christ… lived with his mother Mary, wife of Joseph, the carpenter. Although of little strategic or economic importance, the Jewish and Christian scriptures allude to the spiritual importance of the Galilee region.” (pp. 1-2)

In view of Nazareth’s modern-day size and significance, one is surprised to learn how long it remained a small and negligible town. According to Abujaber’s account, it was first under Dhaher Al Omar’s rule that it gained some advantages, save for the building of a few churches during Byzantine times, and its elevation to a bishopric under the ruler Tancred in 1109. While the Crusades attracted attention to Nazareth, the Crusaders viewed the indigenous Orthodox Church with suspicion, as it did not comply with Latin policies; also local Christians were sometimes viewed with suspicion by Muslims due to their real or imagined connections to the Crusaders. In the battles between the Crusaders and local Muslim leaders, churches and monasteries in nearby Mount Tabor were destroyed and those who did not convert to Islam were killed.

Such insecurity was only ended decisively when Dhaher Al Omar established his principality in northern Palestine. Thousands of Nazarenes joined in the battles to establish his rule, and Nazareth grew and became a commercial centre. Dhaher Al Omar also granted the Orthodox community the right to their own church. 

The 19th and early 20th century was a time of relative prosperity and witnessed the building of many churches, schools, orphanages and hospitals, mostly funded by churches abroad, and accessible to Muslims as well as Christians. The book includes descriptions of these institutions, the various Christian communities and religious orders, and their churches, as well as interesting historical photos of landscapes, monuments and important documents. 

The historical narrative ends with the fall of the Galilee to the Zionist forces in 1948. Complicating the job of historians, Nazareth’s 14-volume register disappeared, erasing records of 130 years of daily transactions, which had been supervised by judges of the Fahoum family. Yet, Christian-Muslim solidarity persisted, based on the 1854 “cousinship” pact signed by the leaders of the two communities, at a time when sectarian strife was occurring in other parts of Bilad Al Shem. 

Besides highlighting Nazareth for its beauty and historical significance, Abujaber’s book conveys a timely message on the merits of religious tolerance, holding out the town’s example of people who “have lived together during the last three hundred years with an air of amity between them and a feeling of pride that has been transmitted from generation to generation”. (p. 114)

Babies learn what words mean before they can use them

By - Dec 02,2017 - Last updated at Dec 02,2017

Photo courtesy of newkidscenter.com

Babies begin to learn words and what they mean well before they begin talking, and researchers are beginning to understand how they do it. 

”I think it’s especially intriguing that we find evidence that for infants, even their early words aren’t ‘islands’: even with a very small vocabulary they seem to have a sense that some words and concepts are more ‘similar’ than others,” Dr Elika Bergelson from Duke University, Durham, North Carolina told Reuters Health by email. 

“While they still have a lot to learn before they show adult-like or even toddler-like levels of comprehension, this gives us a peek into how those early words and concepts are organised.” 

True word learning requires making connections between speech and the world around us and learning how different words relate to each other. 

Bergelson’s team studied 6-month-old babies to see whether they recognised these connections, as opposed to merely recognising words in isolation. 

Using eye tracking, the researchers found that infants looked significantly more at pictures of named objects (“car,” for example) when the objects were paired with unrelated objects (like a picture of a car with a picture of juice) than when the objects were paired with related objects (like a picture of a car with a picture of a stroller). 

Infants, the study authors suggest, “may know enough about a word’s meaning to tell it apart from the unrelated referent but not the related one... That is, perhaps infants know ‘car’ cannot refer to juice, but not whether stroller is in the ‘car’ category.” 

Using home video recordings, the researchers also observed that the infants learned to recognise words better when they could see the objects as the words were being used (for example, when they were told, “here’s your spoon,” when the spoon was actually present). 

How often the word was used in the presence of the object seemed to have a greater impact on the development of understanding than who did the speaking, according to the November 20 online report in PNAS. 

“I think before figuring out how to enhance vocabulary development, we need to better understand how it proceeds ‘typically’ — this paper is a first step in that direction,” Bergelson said. “That said, I think one thing suggested by our work is that talking more with young babies, and focusing in on what they’re looking at and caring about certainly won’t hurt — and it might even help — with early language development.” 

“Treat your baby like a real conversational partner,” she said. “Even young infants are listening and learning about words and the world around them before they start talking themselves, and their caregivers make that possible.” 

Dr Dana Suskind from the University of Chicago, who has studied ways to help parents enrich infant language development but who wasn’t involved in this research, told Reuters Health by email, ”From my standpoint, this work continues to reaffirm the critical importance of early and intentional parent language and interaction from day one and that learning doesn’t start on the first day of school but the first day of life!” 

Diabetes, obesity behind 800,000 cancers worldwide

By - Nov 30,2017 - Last updated at Dec 01,2017

Photo courtesy of wordpress.com

PARIS — Nearly 6 per cent of new cancers diagnosed worldwide in 2012 — some 800,000 cases — were caused by diabetes and excess weight, according to a study published on Tuesday.

Among the 12 types of cancer examined, the proportion of cases chalked up to these factors was as high as a third, researchers reported in The Lancet Diabetes and Endocrinology, a leading medical journal.

Cancers stemming from diabetes and obesity combined was almost twice as common among women than men, they found.

And of the two cancer-causing agents, being overweight or obese — above 25 on the body-mass index, or BMI — was responsible for twice as many cancers as diabetes.

The conditions, in reality, are often found together, as obesity is itself a leading risk factor for diabetes.

“While obesity has been associated with cancer for some time, the link between diabetes and cancer has only been established quite recently,” said lead author Jonathan Pearson-Stuttard, a clinical research fellow at Imperial College London’s Faculty of Medicine.

“Our study shows that diabetes — either on its own or combined with being overweight — is responsible for hundreds of thousands of cancer cases each year across the world.”

A surge in both conditions over the last four decades has made the tally significantly worse, the study showed.

The global increase in diabetes between 1980 and 2002 accounted for a quarter of the 800,000 cases, while the obesity epidemic over the same period resulted in an additional 30 per cent of cases.

On current trends, the share of cancers attributable to the two conditions will increase by 30 per cent for women and 20 per cent for men in less than 20 years, the researchers warned.

“In the past, smoking was by far the major risk factor for cancer, but now healthcare professionals should also be aware that patients who have diabetes or are overweight also have an increased risk,” Pearson-Stuttard said.

For men, obesity and diabetes accounted for more than 40 per cent of liver cancers, while for women they were responsible for a third of uterine cancers, and nearly as many cases of breast cancer.

The threshold for obesity is a BMI — one’s weight in kilos divided by one’s height (in centimetres) squared — of 30.

To conduct the study, researchers gathered data on cases of 12 types of cancer from 175 countries in 2012, and matched it with data on weight and diabetes.

 

People with a BMI of 25 to 29.9 are considered to be overweight.

The lucrative business of mobile apps

By - Nov 30,2017 - Last updated at Nov 30,2017

Computer programming has never gone out of fashion and will probably never in the foreseeable future. The best proof of that is the world of mobile apps

Programming languages have come a long way since the computer boom of the late seventies and early eighties of the last century. College students and novice programmers would learn Fortran, Cobol and the like.

Fast forward to our days. Not only are there a number of new, more powerful languages, but the networks have forced the entry of additional structures in the languages as well, and therefore there is more to learn for those working in the field. In addition, object oriented programming (OOP) techniques have revolutionised information technology furthermore.

Simply put, OOP allows reusing blocks or portions of already developed and proven software, so as not to have to reinvent the wheel each time. Productivity and efficient is significantly enhanced this way. Tapping the huge banks of already available blocks or sections of programmes is an invaluable resource.

Still, the basic notions of programming are the same since day one. These consist of statements, functions, variables, loops, conditions, subroutines and all the elements that programmers, whether seasoned or beginners, are familiar with.

The above situation has now created two worlds of programmes and programmers. There are those who design, develop and implement large programmes, mainly targeting server computer and global networks, and then there are those who go for small pieces of programmes called apps, a short form for application software; which in the end means the same thing.

The first kind of programmes takes months and sometimes years to get done, and proportionally end up costing hundreds of thousands of dollars. Airlines, banks, the military, hospitals, large administrations, civil status departments, they all need and use such software.

At the other end of the business, mobile apps are a totally different story. These are made for Google’s Android or Apple’s iOS, the two systems that fuel smartphones and tablets and allow you to manage them. We all are familiar with Google Play and Apple App Store, the two places on the web where we go to download and install apps. It is a world on its own out there.

Whereas a good number of the apps are free (more about this in a moment), you still have to pay to use the others. It is a very lucrative market and a smart, rather sophisticated one.

Firstly, the so-called “free” apps are rarely really free, for most come with advertising that keeps nagging you at the worst moment. To be honest, let us specify that there’s an exception, and that indeed some apps are entirely free, with no ads, no hidden messages and no strings of any kind attached; but they are rare and constitute an exception.

The most interesting are those apps that ask for a little money, most of the time between $5 and $10. You can still find a large number that will cost you as little as one dollar or so, whereas the most “expensive” will be $20 or $30. It very rarely costs more than that.

From games to business, entertainment, organisation, photography, music, networking, health, edutainment and everything in between, the number of apps available for Android and iOS is overwhelming. How do the programmers make money with such humble price tags? With the quantity sold of course. The numbers are impressive.

I recently bought a DJ-ing Android app for $10 on Google Play for my tablet. The counter showed that it had already registered 10 million downloads! It is easy then to do the maths.

Each of the two stores has millions of apps available. The downloads and the money reaped from them is in billions of dollars. Recent figures indicate 2.8 million apps for Google Play and 2.2 million for App Store, according to statista.com. What is really interesting is that most apps are the work of freelancers, often one or two independent programmers, and less frequently large software firms. But of course there are also apps made by Microsoft or other giants in the industry.

 

What better business for a young, talented freelance programmer than designing a mobile app and selling it on Google Play or App Store? Naturally, it is easier said than done. Great programming skills, along with a little bit of luck, are mandatory here. The huge advantage, the one that is attracting countless young programmers, is the cash investment required: none, apart from the time it takes to do the work.

Rap mogul Jay-Z leads Grammys race with eight nods

By - Nov 30,2017 - Last updated at Nov 30,2017

Rap artist Jay-Z (AFP photo)

NEW YORK — Jay-Z led Grammy nominations  on Tuesday with eight nods, followed closely by fellow rapper Kendrick Lamar with seven, in a striking embrace of hip-hop for the music industry’s top prizes.

Jay-Z, who had never before been nominated in a major category as a solo artist, is up for Album of the Year for his “4:44” as well as for Record of the Year and Song of the Year.

“4:44” marked a return to music by the 47-year-old Jay-Z after years focused on business ventures. 

The album put on display an unusually vulnerable Jay-Z who acknowledged his infidelity to wife Beyonce, explored his mother’s closet life as a lesbian and tackled the state of US race relations.

Bruno Mars, the fun-loving funk revivalist, also fared well with six nominations including Album of the Year for his “24K Magic”.

“Despacito”, the viral hit that tied for the most weeks ever on top of the US singles chart despite being in Spanish, was nominated both for Record of the Year, which recognises the overall performance, and Song of the Year, which honours the songwriter.

The Recording Academy, which consists of more than 13,000 music professionals, will vote to decide the winners who will be unveiled at the annual Grammys gala on January 28.

The ceremony will take place in New York, Jay-Z’s hometown, to mark the awards’ 60th edition after 14 years in Los Angeles.

The industry was already set to honour Jay-Z at the pre-Grammy party thrown by music executive Clive Davis.

Hip-hop’s emergence as a major force at the Grammys comes after years of criticism about how little the entertainment industry recognizes African American artists.

In the past, only two rap-dominated albums have won Album of the Year.

Two years ago, Kendrick Lamar’s “To Pimp a Butterfly” — a widely acclaimed album that featured an unofficial anthem of the Black Lives Matter movement — controversially lost to Taylor Swift’s “1989”.

And last year, Adele expressed embarrassment over winning Album of the Year over Beyonce’s experimental and narrative-rich “Lemonade”.

This time, Swift was only nominated in minor categories, although her chart-topping new album “Reputation” came out too late for consideration for Album of the Year.

Ed Sheeran, another favourite for Grammy glory, was also shut out in the major categories.

Among other rappers, Childish Gambino — the stage-name of comedian Donald Glover who infuses funk and psychedelic R&B into his hip-hop — is up for Album of the Year and Record of the Year.

Bullied teens twice as likely to bring weapons to school

By - Nov 30,2017 - Last updated at Nov 30,2017

Photo courtesy of thetrace.org

One in five teens are victims of bullying, and these adolescents are about twice as likely to bring guns and knives to school than peers who aren’t bullied, a US study suggests. 

Researchers examined how high school students answered three survey questions: how often they skipped school because they felt unsafe; how often they got in physical fights at school; and how many times they were threatened with a weapon at school. 

“High school students who reported being bullied on school property within the past 12 months were not at increased risk for carrying a weapon to school if they answered ‘no’ to all three of these questions,” said senior study author Dr Andrew Adesman, a researcher at Steven and Alexandra Cohen Children’s Medical Centre of New York in Lake Success. 

“Importantly, students who said yes to all three of these physical safety/injury questions were at the greatest risk for carrying a weapon to school,” Adesman said by email. 

For the study, researchers analysed survey responses from a nationally representative sample of more than 15,000 students in grades 9 to 12. 

Overall, about 20 per cent of participants reported being victims of bullying at least once in the past year, and about 4 per cent said they had brought a weapon to school in the past month, researchers report online November 27 in Paediatrics. 

Only 2.5 per cent of the teens who were not bullied brought weapons to school, the study found. 

But about 46 per cent of bullying victims who also reported skipping school, getting in fights and getting threatened by somebody else with a weapon said they had brought a weapon of their own to school. 

Victims of bullying were more than four times as likely to skip school as students who weren’t bullied. When bullying victims did skip school, they were about three times more likely to bring weapons to school than teens who weren’t bullied. 

Bullying victims were more than twice as likely to get in fights at school, and when they did get in fights they were about five times more likely to carry weapons, the study also found. 

Teens who were bullied were more than five times more likely to be threatened with weapons, and when this happened they were almost six times more likely to bring guns or knives to school. 

The study wasn’t a controlled experiment designed to prove whether or how being bullied might influence the odds that students would bring weapons to school. 

Another limitation is that researchers relied on teens to truthfully report on their experiences with bullying and weapons, and some youth may have been reluctant to admit they carried weapons, the authors note. 

It’s also possible that other factors beyond bullying might have influenced teens’ decisions about carrying weapons to school, said Melissa Holt, author of an accompanying commentary and a researcher at the Boston University School of Education. 

“Findings from this study do not directly address motivations for weapon carrying,” Holt said by email. 

“They do suggest that bullying victimisation alone is not necessarily associated with increased risk of weapon carrying, but rather other individual (e.g. peer aggression experiences) and contextual factors should be taken into account,” Holt added. 

Still, those three questions about skipping school, fighting or being threatened might be a useful screening tool for finding kids at risk of carrying weapons, Adesman said. 

“The three simple screening questions can help us better identify which students are most likely to carry a weapon to school,” Adesman said. “School personnel, parents and healthcare providers need to be attentive to why some students may be reluctant to attend school and we need to evaluate circumstances whenever a child gets into a fight or is threatened or injured at school.” 

Pages

Pages



Newsletter

Get top stories and blog posts emailed to you each day.

PDF