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In the present industrial world, Programmable Logic Controllers (PLCs) are playing a vital role. A Programmable Logic Controller is a solid state user programmable control system with functions to control logic, sequencing, timing, arithmetic data manipulation and counting capabilities. As the applications are becoming more and more complex, the single-core PLCs are unable to meet the high speed execution...
We propose Candoia, a novel platform and ecosystemfor building and sharing Mining Software Repositories(MSR) tools. Using Candoia, MSR tools are built as apps, and Candoia ecosystem, acting as an appstore, allows effective sharing. Candoia platform provides, data extraction tools for curating custom datasets for user projects, and data abstractions for enabling uniform access to MSR artifacts from...
Software crowdsourcing emerged from the crowdsourcing concept and inherited most of features from it. However, it adapted its nature according to the requirements of software engineering techniques and technologies. Therefore, it is important to understand the detailed elucidation of software crowdsourcing. This paper introduces the connotation of CROWD (Community, Remoteness, Open-call, Web, Diversity)...
We introduce Candoia, a platform and ecosystem for building Mining Software Repositories (MSR) tools. The platform is designed to support building of MSR tools by providing necessary tools and abstractions that hide the complex details of version control, bug databases, source code programming languages and forges. The ecosystem allows easy sharing and accessing of MSR apps for researchers and practitioners...
This study is about the disastrous flooding of an Indian metropolitan area of Chennai when the rain had nearly broken the record of 100-years with 374 mm rain falling on December 1, 2015, virtually breaking the November monthly average of 407.4 mm in a day. This city with a population of approximately 6.7 million people came to a standstill. Astonishingly, one of the biggest software development hubs...
ABB Medium Voltage (MV) drives offer flexible and reliable modular design for single as well as multi motor applications with power range from 3 to 36 MW. In order to validate the complex converter topologies and control methodologies of MV drives, a powerful multi core real time simulator is used for Hardware in Loop (HiL) testing. The Medium Voltage Drive Hardware-in-Loop (MVDHiL) system is preferred...
In this paper, we describe the design and development of Flight Computer module of the nano-satellite of IIT Madras, named IITMSAT. The flight computer module uses a 32 bit ARM microcontroller from Freescale-KL46Z256VLL4 and handles the attitude control, beacon transmission and electrical power management functions. The data from the attitude sensors is used by the control algorithm to calculate the...
Software has become a driving force. Its impact on our society continues to be profound. Customers have come to rely on the functionality and accuracy of software. A bug free software is an illusion and infinite testing is simply not a viable option.. But with scientific software development technology, quality control and systematic testing, number of bugs could be minimized. Software testing is...
USB forms the backbone of communication to external world. When a USB device is attached to a USB host, a sequence of interaction happens for establishing the communication channel, known as enumeration. This paper explains the enumeration process of USB2.0 in detail and discusses the challenges faced during post silicon debug of couple of issues related with enumeration. As a case study we will analyze...
Software testing is considered to be the ultimate obstacle before software can be released. Traditional approaches to testing the software revolves around capabilities of a system using various types of testing (e.g., black-box) at various level of software development process. Testing the software for system-wide qualities such as portability is very rare. The research work in this area is very limited...
Strongly promoted by the leading industrial companies, cloud computing becomes increasingly popular in recent years. Cloud Computing allows us to abstract distributed elastic IT resources behind an interface that promotes scalability and dynamic resource allocation. The terminology applied to this kind of processing, when describing shared resources, Such resources are available on demand and at a...
The number of cores integrated onto a single die is expected to climb steadily in the foreseeable future. This move to many-core chips is driven by a need to optimize performance per watt. How best to connect these cores and how to program the resulting many-core processor, however, is an open research question. Designs vary from GPUs to cache-coherent shared memory multiprocessors to pure distributed...
We create a distributed storage infrastructure by embedding passive RFID tags in trees, for forest search and rescue. As a hiker moves through the forest, her reader writes a unique identifier (ID) and increasing sequence numbers (SNs) to tags, called (ID,SN) pairs. This creates a digital path for searchers to follow if the hiker is lost. Since tag memory is limited, hikers must share this constrained...
The design of 42 GHz, 200 kW Gyrotron has been carried out using in-house and commercially available software's. A triode type MIG has been designed using EGUN code and three in house developed codes MIGSYN, GINTMESH and MIGANS respectively. A weakly tapered interaction cavity has been designed to excite TE03 operation mode. A software GCAVSYN has been developed to synthesize the cavity geometry and...
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