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Parini A.,Mist Technologies | Parini A.,University of Ferrara | Bellanca G.,Mist Technologies | Bellanca G.,University of Ferrara | And 6 more authors.
IET Conference Publications | Year: 2013

We present a microring-based integrated router in Silicon-on-Insulator technology suitable for optical networking at chip level. The switching functionalities in a 3-channels 10 Gbit/s WDM configuration are evaluated through the BER curves. Results show, for a BER of 10-9, a maximum power penalty of 7 dB on the less performing routing path.


Fabbrici S.,Mist Technologies | Fabbrici S.,Science 37 | Porcari G.,Science 37 | Porcari G.,University of Parma | And 6 more authors.
Entropy | Year: 2014

In Ni-Mn-Ga ferromagnetic shape memory alloys, Co-doping plays a major role in determining a peculiar phase diagram where, besides a change in the critical temperatures, a change of number, order and nature of phase transitions (e.g., from ferromagnetic to paramagnetic or from paramagnetic to ferromagnetic, on heating) can be obtained, together with a change in the giant magnetocaloric effect from direct to inverse.Here we present a thorough study of the intrinsic magnetic and structural properties, including their dependence on hydrostatic pressure, that are at the basis of the multifunctional behavior of Co and In-doped alloys. We study in depth their magnetocaloric properties, taking advantage of complementary calorimetric and magnetic techniques, and show that if a proper measurement protocol is adopted they all merge to the same values, even in case of first order transitions. A simplified model for the estimation of the adiabatic temperature change that relies only on indirect measurements is proposed, allowing for the quick and reliable evaluation of the magnetocaloric potentiality of new materials starting from readily available magnetic measurements. © 2014 by the authors.


Nipoti R.,CNR Institute for Microelectronics and Microsystems | Nath A.,George Mason University | Moscatelli F.,CNR Institute for Microelectronics and Microsystems | De Nicola P.,Mist Technologies | And 2 more authors.
Semiconductor Science and Technology | Year: 2012

The fabrication of a fully ion-implanted vertical p-i-n diode using high-purity semi-insulating 4H-SiC substrate has been demonstrated for the first time. The intrinsic region is the wafer itself with a thickness of 350 m. The anode and cathode are obtained by doping the front and back wafer surfaces with implanted Al +and P +ions, respectively, with concentrations of about 10 20cm 3. The electrical activation of the implanted dopants is obtained by microwave heating the samples up to 2100 °C for 30 s. At ±100 V the on and off state current ratio is in the order of 10 4. Forward saturation current is five orders larger than it would be if controlled by the series resistance of the thick HPSI 4HSiC intrinsic region. © 2012 IOP Publishing Ltd.


Fichtner T.,Max Planck Institute for Chemical Physics of Solids | Wang C.,Max Planck Institute for Chemical Physics of Solids | Levin A.A.,Max Planck Institute for Chemical Physics of Solids | Kreiner G.,Max Planck Institute for Chemical Physics of Solids | And 5 more authors.
Metals | Year: 2015

We report on the effects of annealing on the martensitic phase transformation in the Ni-based Heusler system: Mn50Ni40Sn10 and Mn50Ni41Sn9 powder and Co50Ni21Ga32 nanoparticles. For the powdered Mn50Ni40Sn10 and Mn50Ni41Sn9 alloys, structural and magnetic measurements reveal that post-annealing decreases the martensitic transformation temperatures and increases the transition hysteresis. This might be associated with a release of stress in the Mn50Ni40Sn10 and Mn50Ni41Sn9 alloys during the annealing process. However, in the case of Co50Ni21Ga32 nanoparticles, a reverse phenomenon is observed. X-ray diffraction analysis results reveal that the as-prepared Co50Ni21Ga32 nanoparticles do not show a martensitic phase at room temperature. Post-annealing followed by ice quenching, however, is found to trigger the formation of the martensitic phase. The presence of the martensitic transition is attributed to annealing-induced particle growth and the stress introduced during quenching. © 2015 by the authors; licensee MDPI, Basel, Switzerland.


Parini A.,Mist Technologies | Parini A.,University of Ferrara | Calo G.,Polytechnic of Bari | Bellanca G.,University of Ferrara | Petruzzelli V.,Polytechnic of Bari
Optical and Quantum Electronics | Year: 2014

This paper presents two different approaches that may allow the optical interconnection between superposed levels of multilayer photonic circuits as, for example, in optical-networks-on-chip. The first configuration is based on multi-mode interference devices, while the second one exploits multiple stacked directional couplers. The issues concerning the analytical and numerical design of such devices are discussed, together with a performance analysis in terms of efficiency and footprint. © 2013 Springer Science+Business Media New York.


Parini A.,Mist Technologies | Parini A.,University of Ferrara | Ramini L.,University of Ferrara | Lanzoni F.,University of Ferrara | And 2 more authors.
International Journal of Optics | Year: 2012

This work presents a bottom-up abstraction procedure based on the design-flow FDTD + SystemC suitable for the modelling of optical Networks-on-Chip. In this procedure, a complex network is decomposed into elementary switching elements whose input-output behavior is described by means of scattering parameters models. The parameters of each elementary block are then determined through 2D-FDTD simulation, and the resulting analytical models are exported within functional blocks in SystemC environment. The inherent modularity and scalability of the S-matrix formalism are preserved inside SystemC, thus allowing the incremental composition and successive characterization of complex topologies typically out of reach for full-vectorial electromagnetic simulators. The consistency of the outlined approach is verified, in the first instance, by performing a SystemC analysis of a four-input, four-output ports switch and making a comparison with the results of 2D-FDTD simulations of the same device. Finally, a further complex network encompassing 160 microrings is investigated, the losses over each routing path are calculated, and the minimum amount of power needed to guarantee an assigned BER is determined. This work is a basic step in the direction of an automatic technology-aware network-level simulation framework capable of assembling complex optical switching fabrics, while at the same time assessing the practical feasibility and effectiveness at the physical/technological level. © 2012 Alberto Parini et al.


Parini A.,University of Ferrara | Parini A.,Mist Technologies | Bellanca G.,University of Ferrara
Optical and Quantum Electronics | Year: 2015

In this paper, we apply the Morris screening method to a microring-based Optical Network-on-Chip GWOR router with 4-input and 4-output ports, to assess how a random shift of the resonances of its switching nodes may affect the performance of this device. Results show that the working conditions of this component could be strongly influenced by the accuracy of the fabrication process. © 2015, Springer Science+Business Media New York.


Goswami S.,Mist Technologies | Kapoor S.,Indira Gandhi Institute of Technology | Bhardwaj P.,JSS Academy of Technical Education
Proceedings - 2011 Annual IEEE India Conference: Engineering Sustainable Solutions, INDICON-2011 | Year: 2011

This paper presents classification of DRDO tender documents into predefined categories. Since there is a consistent growth in the volume of digital documents, both on the internet and within organizations, the need to classify them into categories is obvious. In this paper we used 'bag-of-words' technique to represent the tender documents. The dataset was prepared and fed into Weka toolkit. Classification was implemented by Naïve Bayes classifier using 10-folds cross validation technique. The machine resulted in classifying the tender documents with an accuracy of 77.36% by technology category and 67.2% by lab's name. © 2011 IEEE.


News Article | July 6, 2015
Site: www.techinasia.com

Japan’s largest television network, FujiTV, is to stream 4K content commercially, beginning today. This marks the first regular 4K broadcast in Japan – and it may signal more to come. The initial 4K content release includes a documentary on Hashima, the deserted island near Nagasaki that was chosen as a modern industrial heritage site only yesterday. In addition, FujiTV will present a guide to Tokyo’s famous evening illuminations and a popular Chinese-Japanese drama entitled Mysterious Summer. The 4K streaming content comes from a Tokyo-based startup called Mist Technologies. It’s a big tie-up for the company, which launched in 2013 and received funding from Japanese telco KDDI. Mist Technologies is the developer of MistCDN, a peer-to-peer content delivery network platform that claims to get an 80 percent saving in bandwidth. As a result, registered FujiTV streaming viewers will see bitrates of up to 40 MB per second. That’s two and a half times faster than Netflix’s 4K streaming and five times faster than YouTube’s offering. The FujiTV partnership is MistCDN’s first mass-market application, which could push the service into the mainstream. To achieve maximum efficiency, MistCDN needs P2P users to be watching the same things at the same time, and FujiTV’s 4K offerings are expected to draw in viewers. Though Mist has made no public predictions about how many users will tune into the FujiTV streams, they are confident that this deal will launch a new trend of high-speed content streaming in Japan. Japanese broadcasters have been slow to branch out into online services, but their shift may accelerate with pressure from companies like Netflix, which will launch its streaming service in Japan this fall. Netflix will enter the market more than a year after competitor Hulu’s Japanese subsidiary was sold to Nippon TV, ending a three-year run in Japan. Netflix has already announced a collaboration with FujiTV to produce original content – bringing a winning business model from America to Japan as a lure for new customers. The American giant will compete with Japan’s networks for viewers, but Mist Technologies co-CEO Masahiro Yamashita says that Netflix is only one of many potential customers. He tells Tech in Asia that another of Japan’s top five broadcasters is planning to ink a deal with Mist later this summer, and that streaming providers like Netflix are next on the list for discussion.


News Article | July 24, 2015
Site: www.techinasia.com

After stops in Osaka and Fukuoka, Tech in Asia Tour: Road to Tokyo 2015 returned to the Japanese capital last night for a final pitch event a bit closer to home. Tokyo is the epicenter of the country’s burgeoning startup ecosystem, and the early-stage startups selected to battle it out did not disappoint! Each of the four startups that pitched fielded questions – in English – and received constructive criticism from our panel of four esteemed judges: Takeshi Ebihara, founding general partner of Rebright Partners; Yuya Takegawa, vice president of CyberAgent Ventures; Allison Baum, managing director of Fresco Capital; and Saemin Ahn, managing partner of Rakuten Ventures. The winning startup will receive a booth at Tech in Asia Tokyo 2015 on September 8 and 9, as well as event passes and accommodation near the venue. Here are short summaries of each startup in the order they pitched. Can you guess the winner? Want to buy a used bulldozer, crane, or dumptruck? The standard method of procurement involves spending a day or two at a large-scale auction, paying membership fees, and handing a sizable commission to the venue at the end of the deal. Sorabito’s product, Allstocker, wants to bypass the auction block and become the Amazon for heavy machinery and large farming equipment. The startup not only lists machines, but also provides remote quality inspections, payment services, transportation, and language localization. Since launching in March this year, Allstocker has already become the largest online marketplace for Japan-made machines. It’s attracted more than 15,000 listings with users in 130 different countries. The startup charges sellers a 5 to 15 percent commission based on the price of the equipment (the higher the price, the lower the commission), whereas physical auction sites take cuts from both parties. Have a strong opinion about something you purchased recently? Aedi Works’ Sqore app allows users to write instant reviews by scanning a product’s barcode. The startup claims that its service is more responsive than traditional reviews found at the bottom of ecommerce site listings, which makes sense since it can be done on the fly with a simple scan. It also wants to become a kind of social network for reviews, allowing users to connect to people with similar tastes to get an idea if they’d like a certain product based on an existing review. Like Tinder, users can swipe reviews left or right to agree or disagree with them. Sqore hopes to monetize by selling big data to brands, who could use it to find out what products are trending or what demographic to target (or avoid). Amblyopia, commonly known as “lazy eye,” affects between 3 and 6 percent of all children under the age of six. In addition to impairing a child’s vision, the condition can lead to teasing and a lack of self confidence if left untreated. The good news, however, is that amblyopia is mostly curable if treated before a child turns six. Yaguchi Electronics’ Occlu-Pad combines a tablet, a screen filter, glasses, and specially-designed games to treat amblyopia in a fun and less costly way than traditional visual training. The startup claims that clinical trials with Occlu-Pad resulted in significant improvement of a user’s condition. Yaguchi Electronics has already shipped 100 Occlu-Pads to Japanese hospitals and has received approval from the domestic FDA. It’s now working on similar approval for the US and EU. The startup also wants to offer the device direct to consumers via ecommerce websites. No one wants to sit around all day waiting for a video to buffer. For streaming sites like YouTube and Netflix, maintaining server speed is of utmost importance to keep that issue at bay. Mist Technologies’ MistCDN service wants to be a game changer for content providers by sharing the server load with individual users. If 1,000 people are streaming the same episode of Game of Thrones on HBO GO, for example, each of them are pulling data from the server and slowing down traffic. MistCDN optimizes the flow so only a handful of those users are actually drawing directly from the server, while the remaining data is shared between peers. Technically speaking, it uses WebRTC to link users who are downloading the same data packets at the same time as you. MistCDN has been able to increase server efficiency by 80 to 90 percent, and the startup already has a deal with Japan’s largest television network, Fuji TV. Unfortunately, it’s not something that can simply be adopted by viewers – the TV networks and streaming services still have to opt in before users can take advantage of MistCDN’s tech. The judges unanimously decided to crown Sorabito as the Tokyo Tour champion. Congratulations! “Simply put, they know their market very well,” Ahn said. “They know their customers very well and they recognize that privatism wins over all.” If you’d like to mingle with Sorabito and other top-notch startups from across Japan and Asia as a whole, tickets for Tech in Asia Tokyo 2015 are still available here.

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