Volume 9 | Issue 7

 Abstract

The feasibility problem is the problem of finding a point in S. The convex optimization problem is the problem of minimizing a convex function over S. We present a new algorithm for the feasibility problem. The notion of a volumetric center of a polytope and a related ellipsoid of maximum volume inscribable in the polytope are central to the algorithm. Our algorithm has a significantly better global convergence rate and time complexity than the ellipsoid algorithm. The algorithm for the feasibility problem easily adapts to the convex optimization problem.

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 Keywords

Ellipsoid method, convex optimization problem, linear programming.

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 Abstract

Forced air circulation become more important for heating and cooling of the place of living for more comfortable life. There are several types of Duct namely circular and rectangular used for different purposes. Heating, ventilation and air conditioning (HVAC) system designs require good understanding of variation of velocity, pressure and energy throughout the duct in three dimensions. In this paper theoretical analysis has been performed using Ansys-CFX. The physics of the turbulent air flow in duct has been captured by analyzing variation of velocity, pressure, turbulent kinetic energy and wall shear stress in terms of contour plots and graphical plots.

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Duct, Turbulent flow, HVAC, Transition

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Various anthropogenic activities, whether destructive, conservative or creative, have affected the environmental processes in different ways. Mining is such an anthropogenic activity which is responsible for the alteration of human ecological environment to a great extent. Its Environmental impacts include disruption of vegetation, soil and groundwater. Mining is not only responsible for influencing the quality of land but also have far reaching impacts on air, water, vegetation and human and wildlife.

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anthropogenic activity and mining

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Stick, Ultrasonic sensor & walking stick

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Betel vine (Piper betle L.) belongs to genus Piper of the family Piperaceae. Leaves of Piper betle posses several bioactivities and are used in traditional medicinal systems. Many research studies on Piper betle has reported that it contains important chemical constituents and are acts to arouse action for its medicinal properties like anticancer, anti-allergic, anti-malaria, anti-filarial, antibacterial, antifungal study, insecticidal, antioxidant, anti-diabetic, gastro-protective, cytotoxic, wound healing activity, chlorophyllase activity, oral hygiene, and anti-asthmatic effect.

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Piper betle, activity, diseases

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In e-commerce today, contents available for users to explore are overwhelming as an average e-commerce website is about seventy percent (70%) more than a physical store in a total number of users and items. Thus, there arises the need to filter, prioritize and efficiently deliver relevant information. We use recommender systems for this purpose. Recommender systems are at the forefront of the ways in which content-serving websites like Facebook, Amazon, Spotify, etc. interact with their users. Book Recommendation system is such a recommender system built for book lovers. Using your profile, our system uses Machine Learning methods to provide you with highly personalized book recommendations. We are using a hybrid recommender system in order to provide recommendations from the dataset given by Goodbooks users (ratings and item features). We also offer more "conventional" suggestions that focus solely on the book's strengths. Audiobooks can improve readers' literacy by changing the way they listen, read, and learn. Our system allows users to download the audiobook and enjoy their reading time.

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Hybrid Recommender system, Machine Learning methods, E-commerce, Audiobook.

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Ferrotitanium, LECO TC 230, LECO TC 500, WDXRF, ICP

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Currently, the differential function has been widely used in transformer protection relay. However, the main issue of this technique is assigned to the relay mis operation during the presence of inrush currents and current transformer (CT) saturation. In the literature, these limitations have been overcome with the use of tools based on artificial intelligence and signal processing, such as the methods based on artificial neural networks and wavelet transform. This paper proposes a method based the ANNs and wavelet transform to detect and classify disturbance in the power transformer accurately. The algorithm uses wavelet based disturbance detector in order to detect any disturbance related to a power transformer, whereas a neural network based routine is used to classify the disturbance type (internal fault, external fault and transformer energization) appropriately, as well as to classify the internal faults. Several events were simulated, such as external and internal faults, with variations of fault resistance, fault inception angle, and fault type parameters, as well as transformer energizations. The method presented an excellent success rate regarding the correct classification of the disturbance as well as an accurate fault classification.

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Artificial neural networks (ANNs), current transformer saturation, differential protection, power transformers.

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Blind stick is an innovative stick designed for visually disabled people for improved navigation. The blind stick is integrated with ultrasonic sensor along with light and water sensing. Our proposed project first uses ultrasonic sensors to detect obstacles ahead using ultrasonic waves. On sensing obstacles the sensor passes this data to the microcontroller. The microcontroller then processes this data and calculates if the obstacle is close enough. If the obstacle is not that close the circuit does nothing. If the obstacle is close the microcontroller sends a signal to sound a buzzer. One more feature is that it allows the blind to detect if there is light or darkness in the room. The system has one more advanced feature integrated to help the blind find their stick if they forgot where they kept it. A wireless RF based remote is used for this purpose. Pressing the remote button sounds a buzzer on the stick which helps the blind person to find their stick. Thus this system allows obstacle detection as well as finding stick if misplaced by visually disabled people. This goal has been realized through the use of an ultrasonic sensor to determine the range of obstacles and also a microcontroller to act accordingly. The system includes a warning system through voice rendering and through the generation of vibration. The life of blind people is very difficult and challenging, This stick will be embedded by sensor to senses any object or human in front of them.

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microcontroller; vibration motors; ultrasonic sensors; blind people.

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 Abstract

In this paper, we derive a concept from the study of the various ideas and put forward a concept to help differently abled means disabled person to communicate by using a real-time visual-audio translator human computer interface, as by this the difficulty is to be removed. As the human evolved through the ages the communicating factors and medium can as they learn that it is important to communicate as to develop, to express the thoughts and convey the ideas, innovation, imagination and creativity with the fellow beings. As by the ages the modes changes naturally first non-verbal then verbal it was all in nature be we have to progress, but by this a little but the significant population of people is been barred, as in this only country about at the most 3% people cannot speak as they are dumb or they cannot listen as by this they are deaf, and at the least 2% of the population is blind that is they cannot see. Hence the gestures and sign language is the non-verbal mode of communication for deaf or dumb people but by this all the people who have not familiar with this knowledge with them the communication can be barred by this means there have been to remove this barrier, a medium is develop by this the hand gesture is taken as input from the camera and then the image is been processed this is called image processing (with tensorflow) and the after that the gesture is recognized and text on the screen is been displayed and as for output the gesture which is recognized is been given out in the form of the sound (voice) from the speaker by this a dumb or deaf person can communicate with blind person. For another conversation from blind person to dumb or deaf person, as the blind person can speak in this the input is taken as speech from the microphone and then the speech recognition takes place and then the text is given out as on the screen which can be read by the dumb or deaf person as they can see, in this Speech processing is used. By this application interface our aim which is to have communication between two disabled person and also between disabled person and other person can be done, as the system provide us the new innovation, been natural, user friendly and not so complicated in the way of interaction between computer interface and human beings.

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Python, open source CV, Image processing, Tensorflow, Speech (voice) processing and Laptop (computer).

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Nasal drug administration has been used as an alternative route for the systemic availability of drugs restricted to intravenous administration and improved patient compliance and comfort.1 In ayurvedic system , intra nasal is accepted form of treatment. Nasal route is useful for the drugs which are unstable on oral administration because they are significantly degraded in GIT or metabolized by first pass effect in liver. also useful for long term therapy.2

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Nasal, mucoadesive, invivo.

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Purpose: To report an unusual case of ARN syndrome during primary varicella infection in an adult. Methods: A 33-year-old man with a history of a recent primary varicella infection transmitted by his son, consulting with redness, pain and reduced visual acuity in the right eye. The eye examination revealed a panuveitis with a whitish retinal focus, located at the extreme periphery. VZV serology shows positive anti-VZV antibody. The search for the chickenpox genome in aqueous humor also came back positive. Results: Given the context, the diagnosis of varicella panuveitis retinal necrosis is therefore established. The patient is put on oral valaciclovir (1g every 8 hours), topical corticosteroids and mydriatic eye drops. The evolution is marked by regression of inflammation, the gradual improvement of visual acuity up to 20/20 and healing of the necrotic lesion. Conclusion: Earlier diagnosis and effective treatment improves the prognosis of ocular inflammation. In the context of chickenpox with ocular manifestations, acute retinal necrosis should be rigorously investigated. A dilated fundus with a good examination of the retinal periphery is essential.

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Chickenpox; Acute retinal necrosis

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 Abstract

Bearings have important function in support and guiding of a movable object with respect to some stationary structure. In case of conventional axial bearings, need of lubrication, wear and tear, friction, temperature rise due to friction plays important role in efficiency of system. Life of components reduces with wear and tear. Magnetic bearing system overcomes and focuses on reducing these factors so as to increase efficiency of system. Non-contact type axial bearing is designed which is non-contact type, tends to negligible frictional losses with increasing efficiency of system. Also wear and tear will be less which will increase life of components. Interaction of magnets is of main concern in designing such system. Feasible and easy to calculate solution is found and used while calculating magnetic force between magnets. Also considered using an electromagnetic radial bearing to sustain radial loads produced in system and to keep rotating component in line with axis without contact. Further MATLAB software is used for effective and accurate calculation. Experimental magnetic force calculation is carried out to validate the theoretical results. Further non-contact type axial bearing system is designed.

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Cylindrical Magnets , Magnetic Force, Axial Bearing, Contactless

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The primary goal of this project is to use ETABS to analyse and design G + 6 buildings in a variety of seismic zones and soil types. All four zones and three types of soils have been taken into account in this project. ETABS (Extended Three Dimensional Analysis of Building System) is a software that includes all of the major analysis engines, including static, dynamic, linear, and non-linear, and is used to analyse and design buildings in particular. The goal of this research is to use Response spectrum analysis to investigate the behaviour of a G+6 building that has been subjected to an earthquake load. For all possible load combinations, we looked at a G + 6 storey building. [Dead, Live &Seismic loads]. Seismic loads were taken as per IS 1893: 2016. The analysis of a G + 6 building under various load combinations was our final project. As specified in the plan, we considered a commercial structure. From the ground to the sixth floor, the height is 3.5 m is the height of the floor. Self-weight, dead loads were applied to the structure under the load case details of load, live load, and seismic loads Seismic load calculations were performed using the following software: ETABS. 1893-2016 IS (part-1). The beam and column members' cross-sections were assigned, and the materials were specified. The structure's base supports were also specified as fixed.

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ETABS, G+6, Soils, Zones, Analysis, Design

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Rural Marketing is an approach that looks at the rural population not only as consumers but also as producers or suppliers. It can be termed as the two way marketing process. On one hand it covers marketing of all intermediate and consumable goods to rural people and on the other marketing of products Produced and developed in the rural areas.

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Dolok Marawa, Fault and Fracture Density, Micromine, Geothermal Manifestation

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Online food delivery, Consumer perception, E-commerce, Online Shopping, Factors affecting consumer perception.

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This paper presents the enhancement of power quality for a microgrid system at distribution level using Shunt active power filter. The main objective of this paper is to identify a suitable pulse generation technique for obtaining a better compensation capability of shunt active power filter. The compensation capability of the device is mainly depends on the regulation of DC link capacitor voltage. Conventionally fixed hysteresis current control technique has been used. To raise the performance of shunt active power filter, an adaptive hysteresis current control technique has been proposed here. The performance of proposed technique has been verified for different operating condition in the platform of MA TLAB/SIMULINK model.

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Microgrid, Power quality (PQ), Shunt active power Filter, Adaptive hysteresis current control technique, Total harmonic distortion (THD).

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This article presents useful ancient energy technologies that have been used many years for natural cooling of buildings during summer in a hot and humid province in the worldwide. By use of these technologies, people were able to live in comfort without any electrical air conditioning system.

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cooling pads, wind tower, electric fan

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