News Article | April 17, 2017
AEROVOYCE – The reason we have gathered here... Following the launch of the Brand Name and Logo on 2nd March 2017. Today, we proudly announce the launch of SIM (International), Broadband and Fibernet. -- ADPAY proudly announced its full fledged Telecom Service under new brand AEROVOYCE for PAN India. The esteemed apex bodies of Telecom – Department of Telecom (DoT) in-line with Telecom Regulatory Authority of India (TRAI) approved MVNO Licensing process during the month of March 2016 for India, thereafter ADPAY MOBILE PAYMENT PVT. LTD. is the first organization to receive the MVNO license on 7th Dec 2016. This license will enable AEROVOYCE as a complete Mobile Operator same as Airtel, Vodafone, etc., but with Spectrum sharing as MVNO.AEROVOYCE ( WWW.AEROVOYCE.COM ) is entitled to offer Mobile Voice/Data SIM Cards, Mobile Internet (SIM), Broadband/Fiber internet (ISP category A), NLD, IPTV, PMRTS, VSAT, INSAT-R and etc. services for PAN INDIA.Sivakumar Kuppusamy, founder and CEO, said the company plans to enter rural areas with its broadband and fibernet services in the next three months. "Connectivity is a major issue in rural area. It is one of the reasons why prices are cheaper compared with similar service providers," he added."We will focus on townships and rural areas that have a population of 10,000-50,000. Right now, we are looking at area surrounding Salem, Coimbatore, Thanjavur, Cuddalore and Kanyakumari."Ahead of its SIM launch for voice and data in India, AEROVOYCE is launching International SIM on this auspicious day of Tamil New Year 14April 2017.AEROVOYCE International SIM will offer a best value pack for both Voice and Data for all kind of Travelers feeling like a local in abroad and also for NRIs.Country specific - 'Prepaid International SIM' which help travelers avail the even before they reach the destination. The SIM comes with Roaming free option and calls to India can be made at a cheap rate. Cheaper recharge rates ranging from country to country. Travelers can purchase the SIM over the phone, kiosk and select retail stores in all over India and at Airports. Recharge can be done through online portals, AEROVOYCE Customer App, Missed Calls, SMS, Credit cards or over phone too.The Pricing Plan will be varying geo specific ie. Country specific. The plan category will be "Budget, Youth, Master, Executive, Roayal, All In One".AEROVOCYE International SIM provides a huge savings for travelers in roaming and data bills. people who travel for business, vacation and overseas students can enjoy the benefits of this service.AEROVOYCE offers special package on its International SIM for students who have planned to stay for more than a year to pursue their education in a foreign countries.AEROVOYCE has announced that it will offer instant on-boarding of subscribers for all its services and same hour activation.It has implemented a e-KYC which is hosted on Cloud used by field executives with remote devices – like finger print scanner, iris scanner, POS etc., to complete profiling of customers on the spot.Sanjay Babu – 94442 44089 / Dinesh Sundar – 89399 44089Ethos Public Relations , ChennaiTel: 044 – 4356 2351 Mail : email@example.com
Mnasri C.,ISSAT |
IEEE International Conference on Control and Automation, ICCA | Year: 2011
In this paper, a direct adaptive fuzzy tracking control is proposed for a class of uncertain single-input single-output nonlinear pure feedback systems. The nonlinear functions in systems are completely unknown, and are not linearly parameterized. Takagi-Sugeno type fuzzy systems are used to directly approximate the desired control input signal instead of the unknown nonlinearities in system. Moreover, the proposed adaptive fuzzy controller has a simpler form and requires only one adaptation parameter. As a result, the proposed controller guarantees that the system output converges to a small neighborhood of the reference signal and all the signals in the closed-loop system are bounded. The efficacy of the proposed algorithm is investigated by an illustrative simulation example of magnetic levitation. © 2011 IEEE.
Mabrouk W.,ERAS Labo |
Mabrouk W.,French National Conservatory of Arts and Crafts |
Mabrouk W.,Analytical Chemistry and Electrochemical Laboratory |
Ogier L.,ERAS Labo |
And 4 more authors.
Journal of Membrane Science | Year: 2014
Synthesis and characterization of new ion exchange membranes made from chlorosulfonated polyethersulfone (SO2Cl-PES) crosslinked by polyaminated crosslinking reagents have been performed. Two examples are described: one crosslinked by hexane diamine, the other by amino-polyethersulfone (NH2-PES). Sulfonated polyether sulfone (S-PES) and NH2-PES have similar chemical structures that allow compatibility. Surprisingly enough, better results were obtained using amino-polyethersulfone. The best results have been obtained using SO2Cl-PES with 1.3 SO2Cl group per monomer unit crosslinked by 0.2 equivalent of NH2-PES. The membranes, less brittle than pristine SPES and insoluble in solvents such as DMAc, were characterized by TGA, DMA, DSC, ionic conductivity, transport numbers, and water swelling. The results showed that these membranes presented very promising performances for use in Proton Exchange Membrane Fuel Cells. © 2013 Elsevier B.V.
Gherairi S.,Laboratory ENSI |
Ouni S.,INSAT |
Kamoun F.,Computer Science Laboratory ENSI
2011 International Conference on Communications, Computing and Control Applications, CCCA 2011 | Year: 2011
In order to eliminate the interferences between neighbors and reduce the delay, with the respect of the real time constraint, we focus our work on the multi-frequency scheduling access protocols. In this paper, we review the most multifrequency MAC protocols which deploy more than one frequency to transmit data to neighbors. After that, we propose an optimized TDMA multi-frequency scheduling access contribution for sensor networks which is based on three phases. In the first phase, we assign frequencies based on parent node reception in communication tree structure. The reduction of the number of frequencies is provided, in phase two, based on the principle of the graph coloring. Finally, in the last phase, we reduce frequencies to the maximum number of allowed frequencies with TDMA (Time Division) clustering principle. Our results are compared with the other works and have showed that our strategy can remove more interference between neighbors, optimize communication delay and adapt with the maximum number of frequencies in WSN (Wireless Sensor Networks). © 2011 IEEE.
News Article | February 6, 2016
A team of scientists from the Indian Space Research Organization (ISRO) is building a cost-effective new satellite that would help predict cyclones and other weather conditions in the country. The new ScatSat-1 satellite will replace OceanSat-2, which has correctly predicted cyclones in the past. Dubbed as an example of frugality, the 310-kg ScatSat-1 satellite is being created at 60 percent its actual cost and in as fast as one-third of the expected timeframe. How is that possible? It's all because of recycling. About 40 percent of the massive satellite is comprised of scraps from previous satellite missions that have been developed at the Space Applications Centre (SAC) in Ahmedabad. SAC is a vital arm of ISRO, and it deals with a variety of disciplines such as the design and development of societal applications, payloads, space sciences, and capacity building. "Normally, it takes about three years to build a satellite of this class from scratch," said SAC director Tapan Misra. "However, as we have sourced 40 percent of the parts used in ScatSat-1 from spares of previous missions, we will complete it in a year's time." The cost of the entire ScatSat-1 project will be further cut down as the new weather satellite will be launched into orbit while piggy-backing onto another satellite. It will definitely save launch costs, Misra said. The ScatSat-1 satellite's task is to measure wind vectors, as well as the speed and direction of wind over oceans. It has been built to survive multiple system failures, unlike previous satellites which were only designed to withstand a single failure, Misra said. OceanSat-2 was launched six years ago, and had become dysfunctional in 2014. It was known for its accurate predictions of cyclone Hudhud and cyclone Phailin. The latter was detected in Orissa Coast three years ago. Now that the OceanSat-2 is dysfunctional and the ScatSat-1 is still being built, the ISRO is collecting weather data from the INSAT-3D satellite. ISRO has proven that it is capable of being extremely economical. In 2014, India achieved a historic moment when it successfully placed the low-cost Mars spacecraft named Mangalyaan around the red planet just on its very first attempt. With that, India broke into an elite club of three nations. Meanwhile, the ScatSat-1 satellite is expected to have a mission-life of five years, and it will represent ISRO until an advanced OceanSat-3 is built.
News Article | December 1, 2015
Tunisians using computers and phones in an Orange store. Photo: Hamza Ben Mehrez Tunisia has made great improvements in promoting a culture of internet freedom in the five years since the Tunisian Revolution. Unfortunately, internet activists are saying that the climate of fear and self-censorship is starting to creep back—and unless the Tunisian Parliament passes new laws protecting free speech on the internet, the country’s internet freedom could regress in the coming years. Before the revolution in January 2011, the North African country of approximately 11 million was governed by a tightly controlled dictatorship led by President Zine El Abeddine Ben Ali. The internet had been introduced to the country in 1996 and its use exploded in the subsequent years. However, the regime administered a deep packet inspection (DPI) system, a sophisticated technique that uses software and hardware to interfere with web traffic. When a data packet is identified as matching the criteria set by the central censor, a variety of actions can happen. Most common would be blocking the transfer of information, but DPI technology can also delete or modify words in a text or insert other content instead of what the recipient was looking for. The Tunisian DPI censorship system was considered a perfect example of how the internet could be controlled by a central authority. The old regime censored websites administered not just by terrorist groups, but by the entire political opposition. Bloggers who reported any news that the regime considered threatening had their blogs censored. The regime also censored video sharing sites such as YouTube and Dailymotion. For a short period, the regime recorded the Facebook login information of Tunisian users. All pornographic websites were also censored. The Tunisian Internet Agency or Agence Tunisienne d’Internet (ATI) would leave messages reading “Error 404” on censored websites as if the sites never existed. In 2008 Reporters Without Borders noted that emails sent to activists from human rights organizations became illegible upon arrival. Once the filtered emails were opened, they disappeared from inboxes entirely. Since the revolution, the ATI has transformed. The changes are encouraging. Moez Chakchouk, who took over the agency after the revolution, traveled widely to many conferences speaking as an open-internet activist until recently when he was named as the head of the Tunisian postal service. He also presided over the end of the agency’s monopoly over internet exchange point services, installing important internet infrastructure locally for two Tunisian telecommunications companies Orange and Tunisiana. This effort made costs lower for internet service providers and allowed private companies to take over a share of the market. The post-revolution ATI has censored a few Facebook posts critical of the country’s army and has complied with court orders to censor pornographic websites, but it no longer blocks websites en masse. However, Tunisian activists are saying censorship has morphed into new forms. Now, rather than overt censorship from a central authority where websites are blocked, some individuals have been targeted by other governmental institutions for what they have posted on the internet. A new agency, the Tunisian Technical Telecommunication Agency (ATT), was set up by governmental decree in November 2013 without public scrutiny. The agency has no oversight, and has surveillance and meta data collection abilities according to Hamza Ben Mehrez, a lead policy analyst with the Internet Governance for the Middle East and North Africa program of Hivos, a Dutch development agency. This new agency works with the Tunisian Ministries of Interior, Defense, Human Rights, and Justice “to work on judicial prosecutions against internet users and hackers who might threaten state security,” said Ben Mehrez. In other words, the Tunisian government still sees the internet as a battle ground to go after some users that officials believe are violating the law, but enforcement is less centralized. Government mechanisms are in place to put further restrictions on the internet at any time, however. The government has said the primary targets for internet surveillance are terrorism suspects. Repressive laws from the Ben Ali era remain on the books and also continue to threaten internet freedom. Article 86 of the Telecommunications Code states that anyone found guilty of “using public communications networks to insult or disturb others” could spend up to two years in prison and may be liable to pay a fine. During the Ben Ali era, the law was selectively enforced to imprison journalists and political opponents of the regime. Articles 128 and 245 of the penal code also punishes slander with two to five years imprisonment. Article 121 (3) calls for a maximum punishment of five years in jail for those convicted of publishing content “liable to cause harm to public order or public morals.” These laws have been used to punish some political speech on the internet. In July, Mouhab Toumi, a man living on the country’s southern island of Djerba, was arrested for a Facebook post he made criticizing the competence of the President in 2012. Police from the Interior Ministry who arrested him asked him if he wanted to kill the President and also asked if he supported ISIS. He was brought before a judge in August where the judge dismissed the case against him. In December 2014, authorities arrested Tunisian blogger Yassine Ayari for claiming the national military leadership was corrupt on Facebook. Ayari was released in April although he had been sentenced to a year in prison. “Toumi’s case as well as Ayari’s are examples of how the government is telling us that they are still watching over us,” said Yosr Jouini a student at INSAT, the country’s largest engineering school. “The problem now is that we don’t know who is doing what. People in government agencies don’t know their limits.” As Tunisia has no democratic tradition, the biggest challenge to getting restrictive laws changed is organizing a strong enough public constituency that will push for change. Jouini said that there is no tradition of discussing internet policy with the public. “We don’t have classes on these topics at INSAT, people have to be active in looking for ways to find out about these issues,” Jouini said. The lack of public education on issues of internet governance allows the country’s large internet providers to get what they want from the country’s parliamentarians with little public complaint. In fact, some forms of censorship in Tunisia has been purely for the purposes of economic interests. Jouini said there is a competing interest between the public’s needs and the needs of the large internet providers. These competing interests don’t often make satisfactory policy for most internet users. In October 2014, the three largest telecom companies in Tunisia blocked calling apps such as Skype and Viber from being used over their 3G networks, claiming that the apps congested traffic. Jouini said it was much more likely that users were using calling apps to get around paying for phone service to the telecom companies. As the first Arab country to have a successful revolution, post-revolution internet policy in Tunisia is critical because the country is an example for a freer society in the rest of the region. The Tunisian government has come a long way in making the internet a more open exchange of ideas and commerce since the days of dictatorship five years ago. Recent events however, have shown that the Tunisian Revolution did not make the Tunisian internet totally free—and without constant effort and advocacy by Tunisian internet users to keep the internet free in Tunisia, the direction internet freedom has been going in the country could reverse.
Gharbi A.,INSAT |
Halima N.B.,Taibah University |
ICSOFT-EA 2015 - 10th International Conference on Software Engineering and Applications, Proceedings; Part of 10th International Joint Conference on Software Technologies, ICSOFT 2015 | Year: 2015
Multi-Robot System (MRS) is an important research area within Robotics and Artificial Intelligence. The balancing between reactivity and social cooperation in autonomous robots is really considered as a challenge to get an effective solution. To do so, we propose to use the concept of five capabilities model which is based on Environment, Self, Planner, Competence and Communication. We illustrate our line of thought with a Benchmark Production System used as a running example to explain our contribution.
Gharbi A.,INSAT |
Gharsellaoui H.,ESTI |
ICSOFT-EA 2014 - Proceedings of the 9th International Conference on Software Engineering and Applications | Year: 2014
The paper deals with distributed planning in a Multi-Agent System (MAS) constituted by several intelligent agents each one has to interact with the other autonomous agents. The problem faced is how to ensure a distributed planning through the cooperation in our multi-agent system. Finally, we use JADE platform to create agents and ensure the communication between them. A Benchmark Production System is used as a running example to explain our contribution.
Ben Khaled R.,ISI Ariana |
Mnasri C.,ISSAT Mateur |
International Review of Automatic Control | Year: 2013
This paper presents a new direct adaptive decentralized controller for a class of large-scale nonlinear systems in strict feedback form. Based on backstepping approach, the direct scheme is developed using Fuzzy Logic Systems to approximate the control signals. A main advantage of this method is that for each subsystem, only one parameter is needed to be adjusted. It is shown, through an original procedure that the designed local adaptive controllers can globally stabilize the overall interconnected system asymptotically, and ensure the convergence of system outputs to a small neighbourhood of the reference signals. Simulation results demonstrate the effectiveness of the proposed approach. © 2013 Praise Worthy Prize S.r.l. - All rights reserved.
Chaabouni M.,INSAT ISI |
CEUR Workshop Proceedings | Year: 2012
We present in this paper the definition of a collaborative and cooperative platform, exploited through the Cloud, for analyzing learners tracks and managing indicators in educational scenarios. This paper describes the architecture and the design proposed for the platform, then it evocates the related security aspect. Finally, a test scenario is described to demonstrate the platform functionalities.