Systems Modeling for novice engineers to comprehend software products better

One of the key challenges for a novice engineer in a product company is to comprehend the product sufficiently and quickly. It can take anywhere from six months to several years for them to attain mastery but they need to start delivering results much before. SaaS (Software-as-a-Service) products have sophisticated system architecture which adds to the time and effort of understanding them. On the other hand, time available to new hires for product understanding continues to be short and getting shorter, given the pressure to deliver more in less time. Constructivist theory views learning as a personal process in which the learner constructs new knowledge for themselves. Building and refining a mental model is the key way in which they learn, similar to how the brain operates. This paper presents an approach to improve system comprehension process by using a system model that a) acts as a transitional object to aid and refine the mental model of the learner, and b) captures the current understanding of the dynamics of the software system in a way that can be reasoned with and simulated. We have adapted discrete systems modeling techniques and used a transition system as a lightweight modeling language. Such a model can be used by novice engineers during their product ramp-up phase to build a model of the software system that captures their knowledge of the system and aid their mental model. The paper also presents a learning approach in which the learners create and refine these models iteratively using the available and newly uncovered knowledge about the software system. We hypothesize that by leveraging this modeling language and approach, novice engineers can reduce the time it takes them to achieve desired proficiency level of system comprehension. This paper presents early ideas on this language and approach.Comment: 5 page

Gesture Recognition Based on Computer Vision on a Standalone System

Our project uses computer vision methods gesture recognition in which a camera interfaced to a system captures real time images and after further processing able to recognize the gesture shown to be interpreted. Our project mainly aims at hand gestures and after extracting information we try to produce it as an audio or in some visual form. We have used adaptive background subtraction with Haar classifiers to implement segmentation then we used convex hull and convex defects along with other feature extraction algorithms to interpret the gesture. First, this is implemented on a PC or laptop and then to produce a standalone system, we have to perform all this steps on a system which is dedicated to perform only the given specified task. For this we have chosen Beaglebone Black as a platform to implement our idea. The development comes with ARM Cortex A8 processor supported by NEON processor for video and image processing. It works on a clock frequency of maximum 1 GHz. It is 32 bit processor but it can be used in thumb mode i.e. it can work in 16 bit mode. This board supports Ubuntu, Android with some modification. Our first task is to interface a camera to the board so that it can capture images and store those as matrices followed by our steps to modify the installed Operating System to our purpose and implement all the above processes so that we can come up with a system which can perform gesture recognition

Arc stability analysis of twin-wire welding using wavelet energy entropy

The broader aspect of this work is to convey newer observations in twin-wire gas metal arc welding. In the prior works, it has been observed that the dissimilar currents in lead and trail lead to stabilize the arc. The present work suggests that dissimilar current density in the two electrodes can also help with arc stability, resulting into a considerable influence on HAZ Hardness and aspect ratio. If the difference of current density in the lead and trail is more, the arc attains maximum stability. With the help of dissimilar wire diameter electrodes we can achieve a higher current density difference in lead and trail

Perception and preferences of second professional undergraduate medical students for pharmacology teaching: a questionnaire based cross-sectional study

Background: Feedback from students provides an opportunity to assess lacunae in current systems of teaching and forms the basis for framing desired modifications in the teaching methodology to enhance the magnitude of learning. This study was undertaken to know the views of students on current methodology of pharmacology teaching and to delineate the required changes to be made in it.Methods: The questionnaire based cross-sectional study was conducted on 167 students of second professional undergraduate medical students. The questionnaire was divided in 2 different parts. Part A consisted 20 multiple choice questions on perception and preferences of students for pharmacology teaching and opinion on changes to be made was taken in the part B of the questionnaire.Results: Pharmacology was marked as one of the most interesting and useful subjects by 49.1% and 67.06% of students respectively. Central nervous system (19.76%) and endocrinology (17.96%) were two most boring systems. The central (35.92%) and autonomic (31.73%) nervous systems were two most difficult systems to understand. The combination of lecture notes and textbooks was the preferred reading materials of 58.68% of students. The most preferred teaching media was the combination of blackboard and chalk with power point presentation (80.24%). Increased use of figures, flow charts and diagrams, inclusion of more clinical examples and interactive classes were marked as suggested reforms to enhance the outcome of lecture classes.Conclusions: This study revealed that students are in favour of a substantial change in the current teaching methodology of pharmacology in place of outdated and useless methods

A Case Study on the management of Pittashmari w.s.r. to Gall Bladder Stone

Gall stone disease is a worldwide medical problem, but the incidence rates show substantial geographical variation, Cholelithiasis (gallstone formation) results from a combination of several factors, including super saturation of bile with cholesterol, accelerated nucleation of cholesterol monohydrate in bile, and bile stasis or delayed gallbladder emptying due to impaired gallbladder motility. In India it is more common in women in north, north-east and east as compared to other zones in the country. The disease Gall Stone has not been described directly in Ayurvedic classics. The word Ashmari in Ayurveda stands for stone which is described only in the context of Bastigata Ashmari (urinary calculi). After analyzing the Ayurvedic texts it was found that the bile secreted from gall bladder can be correlated with Accha Pitta mentioned in Ayurveda due to the similarity in location and function. The pathogenesis of the disease occurs due to the abnormal formation of Kapha during the process of digestion and its vitiation due to Vata. Once gallstones become symptomatic, definitive surgical intervention with cholecystectomy is usually indicated (typically, laparoscopic cholecystectomy is first-line therapy at centers with experience in this procedure). The present article deals with “Management of Pittashmari - A Case Study

Studies on Sheet Explosive Formulation Based on Octahydro-1,3,5,7-Tetranitro-1,3,5,7-Tetrazocine and Hydroxyl Terminated Polybutadiene

The effect of replacing hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) by octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) in HTPB-binder on the performance, sensitivity, thermal, and mechanical properties of the sheet explosive formulation has been studied. The maximum loading of HMX was achieved up to 78 per cent in HTPB-binder system. The velocity of detonation (VOD) of HMX-based sheet explosive was observed about 7300 m/s which is marginally higher than existing RDX-based sheet explosive formulation (RDX/HTPB-binder, 80/20). The VOD trends were verified by theoretical calculation by BKW code using FORTRAN executable program. The thermal decomposition kinetics of sheet explosive formulations was investigated by differential scanning calorimetry. The activation energy for sheet explosive formulation HMX/HTPB-binder (78/22) was calculated using Kissinger kinetic method and found to be 170.08 kJ/mol, infer that sheet explosive formulation is thermally stable

SYNTHESIS & IN-VITRO PROTEIN DENATURATION SCREENING OF 2-[(1, 5-DISUBSTITUTEDPHENYL-4,5-DIHYDRO-1H-PYRAZOL-3-YL)OXY]BENZOIC ACID DERIVATIVES

Abstract Novel 2-[(1,5-diphenyl-4,5-dihydro-1H-pyrazol-3-yl)oxy]benzoic acid (2a) & 2-[5-(2-hydroxyphenyl)-1-Phenyl-4,5-dihydro-1H-pyrazol-3-yl]benzoic acid (2b) were produced and examined for their in-vitro protein denaturation activities. It was discovered that compound 2b showed promise and had more potency than acetylsalicylic acid (NSAID) in inhibiting denaturation of bovine serum albumin. Docking research also supports this. The compound 2b has the highest docking scores with COX1(PDB ID 3N8Z), COX2 (PDB ID 4PH9), and TNF (PDB ID 2AZ5), respectively, of Etotal -233.75, -256.48, and -255.83. TLC and elemental tests were used to determine the compounds' purity. All of the generated molecules' analytical and spectral data (1H NMR, FTIR, and MS) were entirely consistent with the proposed structures

Special Issue of ICETETS 2014 -Held on 24-25 February

Abstract-Electricity is recognized as the key driver of economic growth and development for any developing country. Most of the electricity generation in India is carried by conventional energy source which also heavily harm the eco-system by the emissions of greenhouse gasses but still around one third of total population in India has no access to electricity, this is due to rapid growth of population and also the fact that extension of existing grid is a long term process. This work gives an overview on the role of hybrid Renewable Energy Sources (RES) precisely solar and wind to meet the electricity demand of country keeping in view the production and consumption. It also deals with the concepts of using hybrid RES which may provide an intermediary solution especially for small towns and villages which are yet to be electrified under rural electrification program. The major system components of a PV-wind hybrid system and their technological configurations along with design parameters for supplying electricity to individual house of a rural area with basic needs are presented in this paper