Daily Archives: August 2, 2017

Mainstream medicine is partly to blame for the ridiculous ‘treatments’ Goop promotes – STAT

Posted: August 2, 2017 at 9:19 am

I

t is easy to mock the ridiculous and potentially harmful health advice and product lines promoted by Gwyneth Paltrow and her team at Goop. Sleeping near healing crystals, lugging around jade eggs in the vagina, swilling moon juice, undergoing raw goat milk cleanses, dabbing on sex dust, and snapping photos of your aura are just some of the ridiculous treatments and remedies offered at high prices to those looking for health ideas from a movie star.

The mocking may be a bit understated. How does this company and other equally daffy outfits pull off these highly lucrative health scams?

Mainstream medicine is partly to blame.

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Some of the most prestigious hospitals and clinics in North America offer many of the same kinds of treatments that Goop promotes. And some of the practitioners who advise the company, those Goop calls the best doctors and experts in the field for advice and solutions, work at these same institutions.

Why is this? And isnt it time for all of mainstream health care to condemn rather than tolerate doctors who are advising the Goop-like companies of the world that are growing rich by peddling a potent mix of glamor, hipness, and mumbo jumbo?

Several thousand years ago, whether you were an Egyptian pharaoh with migraines or a feverish Spartan soldier, chances are your doctor would try to cure you by bloodletting. He would open a vein with an unsterilized knife or sharpened piece of wood, causing blood to flow into a handy bowl. If you had a high-tech doctor, he might have used leeches instead of a knife.

Despite the fact that bleeding did not work and probably killed a fair number of those who got it, this treatment was a mainstay of medicine for thousands of years. It wasnt until late in the 20th century that doctors began to argue that tradition, custom, and patients willing to pay were a lousy foundation upon which to base medical care. Evidence, in the form of objective clinical trials, needed to be the basis upon which doctors treated their patients.

Still, the twisted logic that ancient therapy means effective therapy can be found on both Goop.com to justify cupping, essential oils, and jade vagina eggs and, incredibly, on many academic and university websites pushing alternative practices.

Today, all medical education from medical school through continuing professional education preaches the value of evidence-based medicine, with one exception. Up in medicines attic, the crazy uncle of medical practice, alternative and complementary medicine, is allowed to offer aromatherapy, crystals, herbal remedies, homeopathy, reiki, detoxification, and other nostrums and elixirs at many of the finest hospitals and clinics in North America. Neither evidence nor scientific plausibility are required. Custom, cultural beliefs, and fairy dust are deemed sufficient to entice patients willing to pay for the equivalent of bleeding.

Think we are kidding? In fact, many universities and academic health centers throughout North America have provided either explicit or implicit support for everything from spoon bending to homeopathy to reiki.

Worse, some of these institutions also endorse the supernatural underpinnings of these therapies. The Cleveland Clinic, to cite just one example, suggests that energy therapies like reiki work by promoting balance and flow in the bodys electromagnetic and subtle energies. Ridiculous? Yes. But not very different from the much-mocked language that Goop and Gwyneth use to market wearable stickers that target our bodies energy imbalances, because, as the Goop website explains, human bodies operate at an ideal energetic frequency.

Little wonder that Goop and its ilk are flourishing. Medicine is sitting inside a glass pyramid from which it is tough to throw stones at alternative and complementary medicine.

A team of researchers recently published a wonderful study outlining how primary school children in Uganda could be taught critical thinking skills in the context of health claims. Teaching a few basic concepts that testimonials are not evidence and that ancient and/or popular does not mean a therapy is effective had a significant impact on how the children assessed claims about health remedies. Perhaps Gwyneth and a few of the leaders of our best academic health institutions should take the same course.

Arthur L. Caplan heads the Division of Medical Ethics at NYU School of Medicine. Timothy Caulfield is the Canada Research Chair in Health Law and Policy at the University of Alberta and author of Is Gwyneth Paltrow Wrong about Everything?

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Mainstream medicine is partly to blame for the ridiculous 'treatments' Goop promotes - STAT

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Dietary supplements, energy drinks need FDA regulation, researchers say – The Columbus Dispatch

Posted: at 9:19 am

JoAnne Viviano The Columbus Dispatch @JoAnneViviano

Hold on to your Red Bull.

Researchers are calling on the U.S. Food and Drug Administration to regulate caffeine-based energy products along with yohimbe, a botanical marketed for male sexual enhancement, after a recent study showed that children taking the supplements often had serious adverse reactions.

The findings are part of a study that examined dietary supplements by reviewing 13 years of calls to poison-control centers in the U.S. and its territories. Centers received about 275,000 calls about supplements during the time period, an average of 58 per day. Thirty-four children died.

While both the energy supplements and yohimbe were responsible for only a small percentage of the calls, both were associated with "considerable toxicity," including one death each, says the study from researchers at Nationwide Children's Hospital, Ohio State University, the Mayo Clinic in Rochester, Minnesota, and the Child Injury Prevention Alliance. Cultural medicines, such as traditional Asian or Latino medicines,also caused a high number of serious outcomes.

Many people erroneously believe that dietary supplements are already regulated by the FDA, saidHenry Spiller, director of the Central Ohio Poison Center at Nationwide Childrens Hospital and one of the study authors.

"They were pulled out of the purview of the FDA in the '90s," he explained. "The FDA can only regulate them if they find them to be dangerous, but they do not look at purity, safety efficacy."

None of that happens, he said. Instead, it's "consumer beware."

The study, published last week in the Journal of Medical Toxicology, examined calls to poison-control centers from 2000 to 2012.

Seventy percent of exposures involved children younger than 6; however, 95 percent of the serious medical outcomes were among the 6-or-older group. Of all exposures, 83 percent were unintentional.

For the children younger than 6, only about 9 percent of exposures resulted in the child being taken to a health-care facility, compared with about half of the exposures among the older children.

The most-common problems for kids who took supplements were rapid heartbeat, vomiting, nausea, irritability, drowsiness and dizziness.

Of the deaths, three were children younger than 6, and 31 were 6 or older.

Overall, exposures increased from 2000 to 2002, decreased from 2002 to 2005 and jumped again from 2005 to 2012. Researchers say the 2002-2005 drop is, in part, due to a decrease, beginning in 2002, in exposures to the stimulant ma huang, also known as ephedra, which was banned by the FDA in 2004.

The drop in ma huang exposures shows that FDA intervention makes a difference, Spiller said.

"The FDA took action on it, and you could see a significant drop," he said "That's somewhat reassuring."

Spiller said the study also showed that adults using supplements should keep them out of reach of young hands.

"A lot of kids get into these," he said. "They dont come with child-resistant closures."

When it comes to older kids, Jessica Buschmann, a clinical dietitian in the sports medicine department at Nationwide Childrens Hospital, said she sees a lot of adolescents turning to energy drinks. She never advises their use under any circumstances. Some other supplements might be OK, but parents and youngsters need to do their homework.

Before starting a supplement, they should be thinking about the overall quality of their diet, said Buschmann, who was not involved in the study.They also should consider whether they are getting enough sleep, exercise and hydration before trying to take a shortcut."

I dont want my athletes relying on supplements for their nutrition. I want their nutritional needs to come from good-quality food, not supplements, Buschmann said.

She also advised discussing any supplements with a medical professional and making sure they are third-party tested and safe for consumption.

jviviano@dispatch.com

@JoAnneViviano

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BWXT Nuclear Energy Canada Awarded CA$34 Million Contract for Primary Heat Transport Motors – Business Wire (press release)

Posted: at 9:18 am

PETERBOROUGH, Ontario--(BUSINESS WIRE)--BWX Technologies, Inc. (NYSE: BWXT) announced today that its subsidiary BWXT Nuclear Energy Canada Inc. (BWXT NEC) has been awarded a CA$34 million, five year contract to supply seven primary heat transport motors for Bruce Power. The motors are part of Bruce Powers life-extension program that will extend the life of six of its reactors to continue providing Ontario with clean, low-cost and reliable electricity for decades to come.

The primary heat transport motors are required to drive the main circulating pumps used to push heavy water through the reactor core into the steam generators. The scope of the contract includes the project management, engineering and manufacturing of seven 11,000 horsepower motors. Work under this contract will commence immediately with the first motor scheduled to be delivered to Bruce Power in mid-2018.

We appreciate the opportunity to execute this important project for Bruce Power and take great pride in our contributions to its life extension program, said John MacQuarrie, president of BWXT Canada Ltd. and BWXT NEC. BWXT is pleased to be in a position to supply its customers with a multitude of product and service solutions to assist them in extending the lives of their nuclear plants.

Partnering with BWXT for this important motor work is critical to ensuring the life extension and operation through 2064, said Mike Rencheck, Bruce Powers president and CEO. Planning and preparation is key to our continued on-time and on-budget performance since January 2016 when our life extension program was started. Suppliers like BWXT and their performance are critical to our success; its a team effort.

Nuclear energy plays a significant role to Ontarios economy and it is great to see the positive effects of Bruce Powers life extension project being felt right here in Peterborough, said Jeff Leal, Member of Provincial Parliament. Throughout its program to extend the life of six of its reactors, Bruce Power will inject billions into Ontarios economy and generate thousands of jobs.

Bruce Power supplies 30% of Ontarios electricity at 30% less than the average cost to generate residential power. Extending the operational life of the Bruce Power units to 2064 will create and sustain 22,000 direct and indirect jobs every year, create $4 billion in annual Ontario economic benefit, and will ensure low-cost, clean and reliable energy for Ontario families and businesses.

Forward Looking Statements

BWXT cautions that this release contains forward-looking statements, including statements relating to the performance, timing and value, to the extent contract value can be viewed as an indicator of future revenues, of the Bruce Power contract. These forward-looking statements involve a number of risks and uncertainties, including, among other things, modification or termination of the contract and delays. If one or more of these or other risks materialize, actual results may vary materially from those expressed. For a more complete discussion of these and other risk factors, please see BWXTs annual report on Form 10-K for the year ended December 31, 2016 and subsequent quarterly reports on Form 10-Q filed with the Securities and Exchange Commission. BWXT cautions not to place undue reliance on these forward-looking statements, which speak only as of the date of this release, and undertakes no obligation to update or revise any forward-looking statement, except to the extent required by applicable law.

About BWXT Nuclear Energy Canada Inc.

BWXT Nuclear Energy Canada Inc. (BWXT NEC), a subsidiary of BWXT Canada Ltd., has more than 60 years of extensive experience and innovation in the supply of nuclear fuel and fuel channel components, services, equipment and parts for the CANDU nuclear power industry. This includes designing and supplying highly reliable nuclear equipment to fuel, inspect and refurbish reactors. BWXT NEC employs approximately 350 skilled employees at three locations in Ontario: Peterborough, Toronto and Arnprior. Learn more at http://www.nec.bwxt.com.

About Bruce Power

Formed in 2001, Bruce Power is an electricity company based in Bruce County, Ontario. We are powered by our people. Our 4,200 employees are the foundation of our accomplishments and are proud of the role they play in safely delivering clean, reliable, low-cost nuclear power to families and businesses across the province. Bruce Power has worked hard to build strong roots in Ontario and is committed to protecting the environment and supporting the communities in which we live. Learn more at http://www.brucepower.com and follow us on Facebook, Twitter, LinkedIn, Instagram and YouTube.

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Extracurricular activities help kids make the grade, learn life lessons – Stillwater News Press

Posted: at 9:18 am

Books and lectures are not the only ways students pick up important lessons and skills during the school year. Extracurricular activities provide a range of benefits to participants almost as limitless as the slate of options available to them.

Whether it is playing video games, hanging out with friends or reading a book, children always find ways to fill their time.

However, extracurricular activities can channel that time in constructive directions, said Ron Cox, Oklahoma State University Cooperative Extension marriage and family specialist.

Extracurricular activities help kids spend their time in positive ways and allow them to develop life skills they wouldnt easily obtain in other ways, Cox said.

Music, theatre, sports, debate and similar activities do an excellent job of keeping children occupied throughout the late afternoon and early evening hours until working parents can make it home.

These activities also serve as real-time labs where students can develop critical life skills such as leadership, teamwork and dealing with adversity.

As an example, 4-H includes lots of service projects that give kids hands-on experience with helping others, generosity and self-sacrifice, Cox said. There arent a lot of places where kids can learn these types of lessons.

Turns out, extracurricular outlets also can have a positive effect on students performance in the classroom as children active in outside activities post higher grades compared to those who are less involved.

Involvement in activities beyond academics also gives students a chance to connect with positive adult role models, something research shows comes with a slew of benefits.

Students who have at least one other caring adult in their lives, in addition to a parent, tend to do better in several ways, such as academically, socially and in terms of avoiding drug use and teen pregnancy, Cox said.

With plenty of extracurricular programs available through schools, community groups, churches and other organizations, families should be able to find activities that fit within their schedules and budgets as well as meet kids interests.

Start by allowing kids to experience a variety of activities and eventually allowing them to gravitate to the ones they most enjoy, Cox said. Extracurricular activities can be incredibly important to kids growing into positive role models and contributing citizens of our state.

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BAE Systems sales fire up as tank orders roll in – shropshirestar.com

Posted: at 9:18 am

The defence giant saw sales increase by four per cent to 9.6 billion in the first six months of the year, while underlying profits were 11 per cent to 945 million compared to the same period a year ago.

In its UK Platforms And Services division, which includes the armoured vehicles maintenance division at Hadley Park in Telford where it employs about 200 people, saw sales rise by seven per cent to 3.9 billion as orders continued to flood in.

"The business has continued to provide support to previously supplied armoured vehicles and bridging systems, with orders of 14 million received in the period," the company said.

"The business is one of two contenders delivering the first stage of the Challenger 2 Life Extension Project."

Telford is home to the Challenger 2 project team, which is currently assessing what needs to be done to allow the British Army's main battle tank to remain in service until 2035.

BAE added that while the General Election had led to the formation of a minority government, "defence and security is expected to remain a priority".

The company added that it was still looking for ways to cut costs.

Chief executive Charles Woodburn said: "Strong programme execution, technology and enhanced competitive positions will be key in driving the business forward, and we will continue to focus on efficiency and meeting our customers' affordability challenges.

"With the expected improvement in the defence budget outlook in a number of our markets, the group is well placed to continue to generate good returns for shareholders."

The group also said it would take a charge in the second half for overhauling its cyber and intelligence arm, where revenues are "softening".

The weak pound against a strong dollar has helped BAE as it makes sales in the United States more valuable when translated into sterling earnings.

Shares in the group rose three per cent after the results.

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How to smother a resource economy to death, starting with LNG – Financial Post

Posted: at 9:17 am

By Joe Oliver

Last week, Canada received more bad news in its prolonged failure to export energy resources abroad. Petronas decided not to proceed with its $36-billion Pacific NorthWest LNG project, dealing a body blow to B.C. employment, economic growth, funding for social programs and revenue to First Nations. Understandably, the federal and provincial governments sounded defensive, characterizing it as a business decision based entirely on the decline in liquified natural gas prices.

However, Petronas had previously emphasized it considers the industrys long-term prospects, including costs, not just the current market. Furthermore, LNG projects are moving forward south of the border and in Australia. An initial project description was filed with the Canadian Environmental Assessment Agency (CEAA) in February 2013, raising the question why it could not have been approved sooner when prices were higher and costs potentially lower. For the sponsor, it must have felt like death by a thousand cuts, with frustrating delays and ceaseless demands for concessions from politicians and regulators, as well as lawsuits from environmental and aboriginal opponents.

Norway green policies have not prevented it from exploiting its vast offshore resources

When I was minister of natural resources, our Conservative government legislated one project, one review in a defined time period, a significant regulatory improvement. Later, we provided an accelerated capital allowance for the projects facilities and extended export licenses. In contrast, the Liberal government denigrated the National Energy Board (NEB), politicized, duplicated and lengthened the consultation and review processes and broadened their scope. It is now considering the addition of social and cultural impacts, which would exacerbate uncertainty and delay.

Former premier Christy Clark imposed a provincial carbon tax and took her time in pressuring Petronas to commit up to $1 billion in investment over 20 years. For its part, the CEAAs numerous and onerous requests for information stopped the clock and added a one-and-a-half-year delay. Meanwhile, the B.C. NDP, later to form government, officially rejected the project. In September 2016, the federal cabinet finally gave its approval, subject to 190 conditions including a cap on carbon emissions. So, a lot of people contributed to killing the deal.

Lets put the project in perspective. Canada has enormous natural gas reserves (1,100 trillion cubic feet), enough for 350 years of domestic use at current consumption. It is just common sense that we export as much as we responsibly can, as soon as we can. However, according to the NEB, Canada will be a late entrant in the highly competitive global LNG market and the next several years will be critical to the development of the Canadian LNG industry. Unfortunately, only the $1.6-billion Woodfibre LNG project has any chance of being built in the next five years.

Canadas strategic challenge is that our sole customer, the U.S., has discovered vast domestic shale reserves. Its companies are buying our gas at the low Alberta border price and exporting gas at the higher Henry Hub price. A substantial oil price differential also exists between Western Canadian Select and international Brent. Our exporters only option is to pay U.S. pipeline tariffs and contract with Gulf Coast facilities. For Donald Trump, its a great deal. For Justin Trudeau, not so much.

That leads to Kinder Morgans $6.8-billion Trans Mountain pipeline extension, which would transport 890,00 barrels of oil a day to Burnaby, east of Vancouver, for export to Asia. The new minority NDP government promised its Green Party supporters it will immediately employ every tool available to stop its construction. To avoid being sued for bad faith, the government is cautious about how it handles permit approvals and its role in lawsuits launched by opponents. Nevertheless, its historical opposition was fierce and Green votes are crucial to keep it in power.

The$12-billionEnergy Eastpipelineis also encounteringNIMBYopposition. Itwould deliver 1.1 million barrels of crudefrom Western Canada toQuebecand New Brunswickfor refining, consumptionand export.

These are nation-building projects. Trudeau should look to Norway, whose passionate commitment to green policies has not prevented it from enthusiastically exploiting its vast offshore resources and becoming the worlds third-wealthiest country per capita. Canada is 19th.

In terms of safety, anewFraser Institutestudydemonstratesthat while global tanker shipmentsdoubledfrom 1970 to2015, spills plummetedby 98 per cent.Therefore, whena projects environmental impact hasbeenscientifically vetted,it is timefor the federal governmentto grab thenettleanduse all itsauthoritytoget itbuilt.Ambivalence doesnot cutit.

We urgently need a national campaign strategy and a federal champion to explain to Canadians what is at stake. Otherwise, time will pass without progress, lengthening a distressing record of lost opportunities. It would be an inexcusable failure for Canada to be the only resource-rich country incapable of exporting its resources for the benefit of its people.

Joe Oliver, chairman of investment dealer Echelon Wealth Partners, is the former minister of natural resources and minister of finance.

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Automation will bring new jobs to India, and these are the skills needed to work with robots – Quartz

Posted: at 9:15 am

The rise of automation isnt all doom and gloom for Indian IT.

Even as traditional IT jobs, such as data entry and server maintenance, are expected to decline over the next five years, new-age jobs are emerging, according to a report by Simplilearn, a San Francisco- and Bengaluru-based online professional skilling platform. New career paths for Indias IT workforce will open up in digital domains such as big data, artificial intelligence (AI), the Internet of Things (IoT), cloud computing, and cybersecurity, the company said in a press release on Aug. 01. Simplilearn surveyed 7,000 IT professionals, and mined job portals such as LinkedIn and Naukri.com for its assessment.

Here are the roles that are likely to have the most vacancies in the next few years:

But just because there are tens of thousands of openings for a web services consultant doesnt necessarily make it the most lucrative option. For instance, big data architect openings are far fewer in number but pay much more, according to the report. While a web services consultant position offers a median salary of Rs9.27 lakh ($14,461) annually, a big data architect could rake in Rs20.67 lakh ($32,234).

With technology evolving fast, its become all the more important for techies to keep their skills up to date with short learning programmes, according to Kashyap Dalal, the chief business officer of Simplilearn.

It is more a cultural shift people will need to go through, he said. They need to get used to the fact that every year, theyll have to learn something. Everybody will need to make some time, and companies will need to facilitate it, too.

The urgency to re-skill or perish is especially striking people with mid-level experience: Nearly 57% of the 7,000 IT professionals looking to level up on Simplilearn had four to 10 years of work experience, the companys report said. Meanwhile, only 11% of those with under four years of experience were seeking the online courses. This could be because early-stage employees, i.e. fresh college graduates, often receive in-house training at their respective companies, Dalal suggested, so they dont have to seek out their own resources, unlike their more experienced counterparts.

Around 41% of those looking to skill up on Simplilearn were from Indias IT capital Bengaluru, which is home to the most tech professionals, Dalal said, besides startups and older IT establishments such as Infosys and Wipro. The Delhi-National Capital Region (NCR), which is now Indias hottest startup destination, followed with 25%.

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LDOs Bring High Efficiency and Low Noise Regulation to Industrial Automation – Electronic Design

Posted: at 9:15 am

Download this article in PDF format.

Designing a power-supply system for industrial automation equipment requires a thorough understanding of the surroundings and conditions that affect the functionality of the wide range of equipment involved. The most important design decision is whether to use linear power supplies or switch-mode power supplies (SMPS).

Today, SMPS are the most popular because of their high efficiency. However, they do have downsides that make linear supplies more desirable. Linear supplies also have their disadvantages, but often turn out to be the best choice for industrial use. Even better is a have your cake and eat it too solution: Use a linear supply with low-dropout (LDO) regulators.

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Linear vs. SMPS

As mentioned, the primary reason for using switch-mode supplies is their high efficiency. Typical figures vary with the application, but efficiencies of greater than 90% are typical. High efficiency translates into minimum power loss in the supply with its attendant low heat dissipation. In large complex industrial settings with lots of equipment efficiency, power usage and heat dissipation become critical factors in terms of operating costs.

The main disadvantage of the SMPS is its noise generation. High-frequency pulse-width-modulated (PWM) pulses are filtered to form the desired dc level, but the resulting ripple and radiated or conducted noise generated can negatively impact the powered equipment and nearby devices.

Linear supplies with linear regulators dont have the noise problem. Furthermore, ripple is greatly reduced by large capacitive filters and the feedback action of the regulator circuitry.

1. Often, a traditional linear IC regulator architecture will use a Darlington bipolar series pass transistor.

The big issue with these supplies, though, is that the efficiency is very poor (Fig. 1). A series pass transistor between the dc input voltage and the regulated dc output requires a minimum amount of voltage drop in order to maintain regulation. This voltage, called the dropout or headroom voltage, is usually a minimum of 1.5 to 2.5 V or more.

Since the output current passes through the pass transistor, this device will dissipate a significant amount of power, all of which shows up as heat. As the input or output voltages vary, the feedback senses the change and drives the pass transistor to adjust its conductance to compensate from any variation. This linear operation requires the minimum overhead be observed to maintain regulation. The overall benefit is no noise generation traded off for efficiency.

One way to get the benefits of low noise and good efficiency concurrently is to use a LDO regulator.

LDO Operation and Benefits

One definition of LDO is a regulator that operates with a series-pass-transistor voltage drop of less than 1 V. A dropout voltage of 1 V or more defines a conventional linear regulator.

A dropout of less than 1 V can be achieved with a PNP bipolar series pass transistor, but modern designs generally use a P-type MOSFET with very low dropout voltages of less than 100 mV (in addition to low on-resistance) (Fig. 2). When working with low supply voltages of 3.3 V or less, low dropout levels become a significant percentage of the output, so less is more.

2. Heres a typical IC LDO circuit with a P-type MOSFET pass transistor.

The regulation process is similar to other series regulators in that any output voltage change is sensed and the gate drive to the MOSFET is varied to correct for the variation.

Key benefits of an LDO include:

The LDO is often used to power processors and field-programmable gate arrays (FPGAs) that require the fast transient response. And theyre ideal for critical linear circuits like signal-conditioning amplifiers, oscillators, and PLL synthesizers. In industrial-automation applications, LDOs make good regulators for sensors, data converters, and wireless/communications/networking circuits.

The Current-Limiting Issue

Some applications put excessive stress on power supplies, especially in industrial automation. High temperature and high voltages are very common. Another potential problem is excessive current draw or a short circuit. Sudden high current flow will typically damage the regulator unless its compensated for. That problem can be handled by incorporating LDOs with internal overcurrent protection.

Two basic types of current limiting are used in LDOs: brick wall and foldback. In the brick-wall method, a current limit is set and if that limit is exceeded, the LDO abruptly shuts down. The regulator continues to supply current at the cutoff level, but the output voltage is no longer regulated. The output voltage becomes the product of the current-limit value and the load resistance. The series pass transistor will continue to dissipate power until the internal protection process of thermal shutdown turns off the device.

The foldback method of current limiting attempts to keep total power dissipation at a constant level. If overcurrent conditions occur, the circuitry reduces the output current and theres a decrease in output voltage (Fig. 3). This keeps the power dissipation within the capability of the device. After that, thermal protection kicks in if elevated temperature conditions persist.

3. Looking at a comparison of output voltage vs. load current, it shows that foldback reduces the output voltage as output current exceeds the limit of the device.

Different LDOs use different methods of current limiting, so you should choose one that fits your application. For example, Texas Instruments offers the TPS7A16 LDO with brick-wall current limiting and the TLV71P LDO with foldback current limiting. More details on current limiting can be found at this reference.

Thermal Issues

While LDOs are more efficient than standard linear regulators, they still dissipate power. Most LDOs also include thermal-shutdown circuitry, which turns off the device if the temperature exceeds the limitusually in the 150-170 range. In some applications, a heat sink may be needed.

In addition, careful attention should be given to the thermal conditions in the power supply. Besides the thermal specifications of the IC itself, you should consider other factors such as PCB design and component placement in regards to the interaction with other devices. The greater the copper area devoted to the LDO, the better the heat dissipation. Other factors to consider are ambient temperature and airflow ventilation.

You can learn more about thermal considerations from videos that shows you how to measure thermal properties and how to avoid damaging an LDO through thermal excess. This and other LDO videos are available from Texas Instruments.

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Q&A: Molly Harriss Olson on the importance of a Modern Slavery Act – Devex

Posted: at 9:15 am

Molly Harriss Olson, Fairtrade Australia and New Zealands chief executive officer. Photo by: Fairtrade Australia and New Zealand

MELBOURNE, Australia A total of 196 submissions have been received for an Australiangovernment inquiry for the implementation of a Modern Slavery Act, including from corporations, nonprofits, government staffers, researchers and others with an interest in ensuring Australian businesses act ethically to ensure there is no slavery in their supply chains.

On Tuesday in Melbourne, the inquiry began its public hearing component, withFairtrade Australia and New ZealandandOxfamamong the organizations requested to speak to the committee members and provide additional information on their submission.

Among those in attendance was Molly Harriss Olson, chief executive officer of Fairtrade Australia and New Zealand, who shared with Devex her predictions for what Australian businesses and the community should expect from the inquiry recommendations to be released later this year.

Here is the interview, edited for length and clarity.

What was the line of questioning you received from the committee?

We were asked a broad set of questions about why the Modern Slavery Act is important, what is the situation today, what is international best practice and the essential things that we can improve upon from the recently released United Kingdom act.

There were also a lot of questions asked about its impact on business.

We emphasized that the act needs to be strong to support the business leaders already out there, already doing great work, and pulling the leg of laggards to help them to comply with a higher standard and make sure human rights and dignity are provided to all people.

Slavery is a continuum of abuses, and starts with the weakest and most vulnerable. For businesses, slavery is always going to be cheaper than paying a modern, living wage and the prevailing approach has been dont ask, dont tell to maintain plausible deniability.

Australian businesses readying for action to combat modern slavery

For Australian businesses, addressing modern slavery within supply chains is no longer a question of why it should be done, but how. The message, however, is not filtering through to the top level of governments. A new Australian government inquiry into establishing a Modern Slavery Act in Australia is seeking business comment and it is an opportunity business groups are urging their members to be vocal on.

But there are a lot of leading companies that deeply understand the problems and challenges that exist in supply chains, and believe that because of the pressure and the way global commerce systems work, there is enormous competition and pressure.

Fairtade has a unique perspective to offer on the value of this kind of transparency in eliminating things like modern slavery.

For more than 30 years we have worked with businesses to make their supply chain transparent and understand it from farmer through to the company and the marketplace. We have visibility across supply chains that I dont believe many other global certification systems would have. And this is important knowledge to share in creating a Modern Slavery Act.

When you discuss the importance of Australia taking a strong leadership approach to slavery through a strong act, what are your key points to focus on?

I think it is important to point out that, in Australia, we are in a region where 56 per cent of the global 21 million people in slave labor conditions are based. Asia is the biggest place and problem for slave labor, which has been identified by the International Labour Organization.

Australian leadership, and Australian business leadership, is absolutely pivotal.

And we also have a situation where leadership companies are doing the right thing and they are forced to play against non-leadership and poorly run companies who are benefitting from poor practices that are ultimately causing the issues of slavery we are seeing in the world.

What we hope this will do, is in a straightforward and simple way, provide clarity and requirements for a level playing field.

Its really important the system have clear reporting to monitor companies and create a public register for community organizations to access and know which companies are doing the right thing, reporting in a transparent manner, and which are getting on top of these issues.

And it is extremely important to have an ombudsman or commissioner who is well resourced to respond to problems or issues, raise awareness and conduct monitoring and evaluation for the act to make a powerful impact.

We have more slavery in the world than we had hundreds of years ago when we were trying to abolish it.

From the business perspective, it is just good business practice to know what is going on in your supply chain. In the 50s, there was concern about safety being too costly for business. The same happened with quality and environmental protection. It turns out that companies which adhere to these kinds of standards are more profitable in the end because they understand their businesses better.

Were in an interesting place in Australia, and I hope this will build on the experience of the U.K. From them, we are already seeing what is working well and what Australia can improve on.

Do you or Fairtrade have concerns of political barriers, or politicians, that could create problems in implementing a Modern Slavery Act?

I think it would be extremely hard to stand up publicly and say Im for slavery. So far, we havent seen anyone coming out overtly in that way.

The concern is that it is very easy to water down something like this, and to make it ineffectual. There would be enormous pressure on anyone trying to reduce impact and effectiveness. Making it voluntary, making it unenforceable, not being clear on reporting requirements, not monitoring reporting are all ways the act could be watered down.

But we have more slavery in the world than we had hundreds of years ago when we were trying to abolish it and the short-term challenge of developing the frameworks for monitoring, evaluation and reporting will be a long-term be cost saving to companies there is nothing more costly than for your reputation to be absolutely destroyed.

The problem we have seen in the U.K. is that only about 30 percent of companies who are required to report have reported. For the ones that have reported, there is no clear, publicly-available site where organizations can look up reports.

We can learn from this, and do better in Australia.

Based on the lines of questioning and political statements so far on a Modern Slavery Act, what do you think we will see with recommendations from this inquiry?

There is a high expectation that there will be mandatory reporting and enforcement of that reporting. We expect there will be a very well-resourced commissioner, and the CEO and the board of businesses will be identified as responsible for their companys business practices.

We expect it to be strong. I think there are a lot of organizations across Australia supporting strong legislation, and we are hopeful it will be an effective piece of improvement for the world.

With Australia expected to get a seat on the U.N. Human Rights Council, how important is it to have strong and leading legislation such as the Modern Slavery Act to Australias international reputation?

It is extremely important.

In the eyes of the international community, Australia has a number of issues that it has not dealt with well in regard to human rights. But this is not a trade-off I see it as something where Australian leadership can be pivotal in providing regional integrity but for Australia to have a seat, our consistency and integrity across the board needs to be present.

Even if we pass the best Modern Slavery Act in the world, we still have to address these other human rights issues.

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Q&A: Molly Harriss Olson on the importance of a Modern Slavery Act - Devex

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Work gives trafficking victims dignity – NEWS.com.au

Posted: at 9:15 am

Stacking shelves or working on a factory production line may seem like ordinary jobs to some, but for trafficking victims newly hired at British supermarket Co-op, just being paid a decent wage to work has been a life-changing experience.

"I have a new life now, a better one. I've got good managers, good colleagues, a very good working environment," said Victor, who was trafficked from Romania.

In the first employment program of its kind, Co-op and anti-trafficking charity CityHearts launched 'Bright Future' in March, and have plans to offer work to 30 trafficking victims this year. So far, nine men and women have accepted jobs at the supermarket's stores or warehouses.

Victor, who declined to give his full name or say how he had been trafficked and exploited, has worked at a factory with Co-op for five months.

"I love the UK, I would like to live and work here. I want to keep this job," he said in a telephone interview through an interpreter.

In Britain, there are an estimated 13,000 victims of forced labour, sexual exploitation and domestic servitude, most of them from Albania, Nigeria, Poland and Vietnam.

Nearly 46 million people are enslaved globally, according to the 2016 Global Slavery Index.

In 2015, Britain passed tough anti-slavery legislation introducing life sentences for traffickers and forcing companies to disclose what they are doing to ensure their supply chains are free from slavery.

Britain's Anti-Slavery Commissioner Kevin Hyland said more businesses should follow the supermarket's lead and offer "the dignity of work" to trafficking victims across the country.

"Good work opportunities give them dignity and allow them to be part of the community again. It prevents them from being re-trafficked, it prevents them from being homeless," said Hyland.

"If we don't improve the victims' support, it will hinder the whole fight against modern slavery."

Paul Gerrard, Co-op's policy and campaigns director, said British companies had a moral obligation to help victims and should go beyond what's legally required under the Modern Slavery Act.

"If we could offer these people work, it will allow them to reclaim their lives and that's the important thing," he added.

"... this should be about UK businesses stepping up and doing more to help victims of modern slavery."

CityHeart support worker Kirsty Hart said ordinary, paid work was transformative for many of the people she helped.

"It's just amazing to see the transformation of clients, before and after, and for them to take control of their lives. It's very powerful," she said.

This rings true for Janusz, who was trafficked from Poland but was given a job with the supermarket a month ago.

"My life has changed 100 per cent because the job gives me the prospect of a normal life in the UK," said Janusz, who did not want to give his full name or details of how he was trafficked.

"The job allows me to be independent. (It) offers me hope for the future."

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Work gives trafficking victims dignity - NEWS.com.au

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