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COMPRE AHORA ONLINE DEMO espia-para-celulares7945877.pen.io/ Telecom operators worldwide now lose $40 billion a year to fraud, and theyneed better tools and procedures to address this growing problem, according tothe latest report from Heavy Reading Service Provider IT Insider."Telecom fraud is an ever-present drain on operator profitability, andoperators and their vendor partners have long tried to limit theft," saysSusan McNeice, Senior Analyst at Heavy Reading and author of the report."Despite their best efforts and recent improvements, the bill for fraud isgrowing and now stands at $40 billion a year -- which is equal to the annualrevenue of the Walt Disney Company."Insiders agree on one thing: It's time to re-commit to fraud prevention andredouble efforts, McNeice says. "To be sure, there is no one approach toguard against fraud," she continues. "Operators have many resources attheir disposal to rekindle their thought processes and actions about riskreduction. But because the costs are already borne before the services arestolen, reducing fraud delivers savings direct to the bottom line of theoperator's income statement."Key findings include:Fraud equals nearly 2% of telecom annual revenues worldwide.New services, especially mobile-based offerings, are increasing fraud riskfor network operators.Long-established fraud problems, including service theft from insidesources, continue to drain service provider resources.Operators and vendors are ramping up fraud prevention efforts by makingfraud detection part of a larger risk-management initiative.Fraud systems benefit from data analytics to identify emerging threats anddeliver a new view of risk and opportunity.As network operators expand more and more services into the realm ofmobile commerce, they will need trusted partners to minimize fraud risks. espia-para-celulares3276227.pen.io/ espia-para-celulares9194152.pen.io/ Telenor has launched its LTE network in Norway, with coverage initiallyavailable in 11 cities and towns. More than one in three Norwegians will have 4Gcoverage from Telenor by the end of the year.Telenor is launching its 4G network in Oslo, Bergen, Trondheim, Stavanger,Lшrenskog, Sandnes, Lillestrшm, Asker, Bжrum, Lofthus in Hardanger andLongyearbyen.By the end of the year Fredrikstad, Sarpsborg, Skien, Porsgrunn, Drammen andKristiansand will have 4G coverage from Telenor. After this an extensionprogramme will continue until the whole of Norway is covered. Tromsш will becovered in the first quarter of 2013."This marks the start of a new mobile fairy tale which all Norwegians willbecome part of. This year more than one in three Norwegians will have4G-coverage from Telenor, but already in 2015 as many as nine in 10 will have 4Gfrom Telenor," says Berit Svendsen, CEO of Telenor Norway.Only PC and tablet users will be able to receive Telenor-4G when it islaunched, while mobile users will have it in good time for Christmas. "Thetiming is brilliant because 4G mobile phones are now being stocked by retailers,"Svendsen says.Telenor is also extending its 3G-coverage at the same time, although thecompany did not elaborate on those plans. Rice University researchers have moved a step closer to creating robust,three-dimensional microbatteries that would charge faster and hold otheradvantages over conventional lithium-ion batteries. The batteries employvertical arrays of nickel-tin nanowires perfectly encased in PMMA, a widely usedpolymer best known as Plexiglas. The Rice laboratory of Pulickel Ajayan found away to reliably coat single nanowires with a smooth layer of a PMMA-based gelelectrolyte that insulates the wires from the counter electrode while allowingions to pass through.The work was reported this week in the online edition of the journal NanoLetters."In a battery, you have two electrodes separated by a thickbarrier," said Ajayan, professor in mechanical engineering and materialsscience and of chemistry. "The challenge is to bring everything into closeproximity so this electrochemistry becomes much more efficient."Ajayan and his team feel they've done that by growing forests of coatednanowires -- millions of them on a fingernail-sized chip -- for scalablemicrodevices with greater surface area than conventional thin-film batteries."You can't simply scale the thickness of a thin-film battery, because thelithium ion kinetics would become sluggish," Ajayan said."We wanted to figure out how the proposed 3-D designs of batteries canbe built from the nanoscale up," said Sanketh Gowda, a graduate student inAjayan's lab. "By increasing the height of the nanowires, we can increasethe amount of energy stored while keeping the lithium ion diffusion distanceconstant."The researchers, led by Gowda and postdoctoral researcher Arava Leela MohanaReddy, worked for more than a year to refine the process."To be fair, the 3D concept has been around for a while," Reddysaid. "The breakthrough here is the ability to put a conformal coat of PMMAon a nanowire over long distances. Even a small break in the coating woulddestroy it." He said the same approach is being tested on nanowire systemswith higher capacities.The process builds upon the lab's previous research to build coaxial nanowirecables that was reported in Nano Letters last year. In the new work, theresearchers grew 10-micron-long nanowires via electrodeposition in the pores ofan anodized alumina template. They then widened the pores with a simple chemicaletching technique and drop-coated PMMA onto the array to give the nanowires aneven casing from top to bottom. A chemical wash removed the template.They have built one-centimeter square microbatteries that hold more energyand that charge faster than planar batteries of the same electrode length."By going to 3-D, we're able to deliver more energy in the samefootprint," Gowda said.They feel the PMMA coating will increase the number of times a battery can becharged by stabilizing conditions between the nanowires and liquid electrolyte,which tend to break down over time.The team is also studying how cycling affects nanowires that, like siliconelectrodes, expand and contract as lithium ions come and go. Electron microscopeimages of nanowires taken after many charge/discharge cycles showed no breaks inthe PMMA casing -- not even pinholes. 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"To be sure, there is no one approach toguard against fraud," she continues. "Operators have many resources attheir disposal to rekindle their thought processes and actions about riskreduction. But because the costs are already borne before the services arestolen, reducing fraud delivers savings direct to the bottom line of theoperator's income statement."Key findings include:Fraud equals nearly 2% of telecom annual revenues worldwide.New services, especially mobile-based offerings, are increasing fraud riskfor network operators.Long-established fraud problems, including service theft from insidesources, continue to drain service provider resources.Operators and vendors are ramping up fraud prevention efforts by makingfraud detection part of a larger risk-management initiative.Fraud systems benefit from data analytics to identify emerging threats anddeliver a new view of risk and opportunity.As network operators expand more and more services into the realm ofmobile commerce, they will need trusted partners to minimize fraud risks. espia-para-celulares3276227.pen.io/ espia-para-celulares9194152.pen.io/ Telenor has launched its LTE network in Norway, with coverage initiallyavailable in 11 cities and towns. More than one in three Norwegians will have 4Gcoverage from Telenor by the end of the year.Telenor is launching its 4G network in Oslo, Bergen, Trondheim, Stavanger,Lшrenskog, Sandnes, Lillestrшm, Asker, Bжrum, Lofthus in Hardanger andLongyearbyen.By the end of the year Fredrikstad, Sarpsborg, Skien, Porsgrunn, Drammen andKristiansand will have 4G coverage from Telenor. After this an extensionprogramme will continue until the whole of Norway is covered. Tromsш will becovered in the first quarter of 2013."This marks the start of a new mobile fairy tale which all Norwegians willbecome part of. This year more than one in three Norwegians will have4G-coverage from Telenor, but already in 2015 as many as nine in 10 will have 4Gfrom Telenor," says Berit Svendsen, CEO of Telenor Norway.Only PC and tablet users will be able to receive Telenor-4G when it islaunched, while mobile users will have it in good time for Christmas. "Thetiming is brilliant because 4G mobile phones are now being stocked by retailers,"Svendsen says.Telenor is also extending its 3G-coverage at the same time, although thecompany did not elaborate on those plans. Rice University researchers have moved a step closer to creating robust,three-dimensional microbatteries that would charge faster and hold otheradvantages over conventional lithium-ion batteries. The batteries employvertical arrays of nickel-tin nanowires perfectly encased in PMMA, a widely usedpolymer best known as Plexiglas. The Rice laboratory of Pulickel Ajayan found away to reliably coat single nanowires with a smooth layer of a PMMA-based gelelectrolyte that insulates the wires from the counter electrode while allowingions to pass through.The work was reported this week in the online edition of the journal NanoLetters."In a battery, you have two electrodes separated by a thickbarrier," said Ajayan, professor in mechanical engineering and materialsscience and of chemistry. "The challenge is to bring everything into closeproximity so this electrochemistry becomes much more efficient."Ajayan and his team feel they've done that by growing forests of coatednanowires -- millions of them on a fingernail-sized chip -- for scalablemicrodevices with greater surface area than conventional thin-film batteries."You can't simply scale the thickness of a thin-film battery, because thelithium ion kinetics would become sluggish," Ajayan said."We wanted to figure out how the proposed 3-D designs of batteries canbe built from the nanoscale up," said Sanketh Gowda, a graduate student inAjayan's lab. "By increasing the height of the nanowires, we can increasethe amount of energy stored while keeping the lithium ion diffusion distanceconstant."The researchers, led by Gowda and postdoctoral researcher Arava Leela MohanaReddy, worked for more than a year to refine the process."To be fair, the 3D concept has been around for a while," Reddysaid. "The breakthrough here is the ability to put a conformal coat of PMMAon a nanowire over long distances. Even a small break in the coating woulddestroy it." He said the same approach is being tested on nanowire systemswith higher capacities.The process builds upon the lab's previous research to build coaxial nanowirecables that was reported in Nano Letters last year. In the new work, theresearchers grew 10-micron-long nanowires via electrodeposition in the pores ofan anodized alumina template. They then widened the pores with a simple chemicaletching technique and drop-coated PMMA onto the array to give the nanowires aneven casing from top to bottom. A chemical wash removed the template.They have built one-centimeter square microbatteries that hold more energyand that charge faster than planar batteries of the same electrode length."By going to 3-D, we're able to deliver more energy in the samefootprint," Gowda said.They feel the PMMA coating will increase the number of times a battery can becharged by stabilizing conditions between the nanowires and liquid electrolyte,which tend to break down over time.The team is also studying how cycling affects nanowires that, like siliconelectrodes, expand and contract as lithium ions come and go. Electron microscopeimages of nanowires taken after many charge/discharge cycles showed no breaks inthe PMMA casing -- not even pinholes. This led the researchers to believe thecoating withstands the volume expansion in the electrode, which could increasethe batteries' lifespans. |
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