This document summarizes a study comparing two parabolic trough concentrator systems with different rim angles (45° and 90°) and aperture areas. The 45° system has a 20% larger aperture area than the 90° system, but other features are the same. Both systems were tested and found to have similar thermal efficiencies of 58-59%, despite the 90° system having a smaller aperture area. The document provides details on the design, fabrication, and testing of the two systems. Key parameters like rim angle, aperture width, focal length, and concentration ratio that define the systems are also discussed.
In the present work two parabolic trough concentrator system of different rim angle and
different reflector aperture area is designed, fabricated, and evaluated, and operated for generate hot
water .There one system is 45° rim angle and next is of 90° rim angles, here reflector aperture area of
45° rim angle has operatically 20% more than 90° rim angle system, but remaining all other features
are same for both the 90° and 45° system. On operation of the system we gets nearly same efficiency
for both the system thus we observe that for all same equal features except of reflector aperture area,
the efficiency got 20+% more for 90° rim angle compare to 45° rim angle. The Supporting stand of
concentrator is made of mild steel & reflector is made of acrylic sheet with a rim angle of 45 and 90
degree and aperture area of 2.20 m square and 1.84 m square with a concentration ratio of 10.00 and
08.30. Both the receiver tube has made of aluminum metal material. The thermal performance of the
PTC was determined based on ASHRAE 93-1986 (RA 91) .The maximum instantaneous thermal
efficiency separately both system is obtained closely to 58.32% – 59.24 % range. The total cost for
each separate system is calculated Rs 4500 Indian.
The document describes the design and development of a solar pumped Nd:YAG laser. It discusses using a Fresnel lens to focus sunlight onto a laser rod containing neodymium-doped yttrium aluminum garnet to optically pump the laser. The laser cavity and output coupler are also mentioned. Work done so far includes fabricating light guides, measuring focal length and spot size, and developing a cooling system. Simulations have been run to optimize positioning of the light guide and characterize loss mechanisms. The next steps are to place the laser rod in the cavity, align it, and attempt to achieve lasing output. Further optimization and characterization will follow if lasing is achieved.
This document discusses a new design method for dome-shaped non-imaging Fresnel lenses that takes chromatic aberration into account. The proposed method uses two design wavelengths to cover the solar spectrum range and locates new design points on prism corners rather than centers. Numerical examples with 500x concentration were designed and evaluated via ray tracing simulations. Results show the new design produces lenses with a deeper dome shape and better optical efficiency at the acceptance half angle compared to the conventional single-wavelength design method. The proposed method is concluded to provide a more effective solar concentrator with some tolerance to solar incident angles.
The document discusses Shine's upcoming Spina Bifida and Hydrocephalus Awareness Week from October 19-26, 2014. It introduces a new #shinereflections initiative inviting people to submit short video clips about their experiences for the campaign. It also encourages everyone to participate in Wear Yellow and Shine activities during the awareness week. The bespoke Shine jewelry available for purchase is mentioned, with contact information provided.
O Dia dos Pais é uma data comemorativa para homenagear os pais e figuras paternas. É celebrado anualmente no segundo domingo de agosto em diversos países.
In the present work two parabolic trough concentrator system of different rim angle and
different reflector aperture area is designed, fabricated, and evaluated, and operated for generate hot
water .There one system is 45° rim angle and next is of 90° rim angles, here reflector aperture area of
45° rim angle has operatically 20% more than 90° rim angle system, but remaining all other features
are same for both the 90° and 45° system. On operation of the system we gets nearly same efficiency
for both the system thus we observe that for all same equal features except of reflector aperture area,
the efficiency got 20+% more for 90° rim angle compare to 45° rim angle. The Supporting stand of
concentrator is made of mild steel & reflector is made of acrylic sheet with a rim angle of 45 and 90
degree and aperture area of 2.20 m square and 1.84 m square with a concentration ratio of 10.00 and
08.30. Both the receiver tube has made of aluminum metal material. The thermal performance of the
PTC was determined based on ASHRAE 93-1986 (RA 91) .The maximum instantaneous thermal
efficiency separately both system is obtained closely to 58.32% – 59.24 % range. The total cost for
each separate system is calculated Rs 4500 Indian.
The document describes the design and development of a solar pumped Nd:YAG laser. It discusses using a Fresnel lens to focus sunlight onto a laser rod containing neodymium-doped yttrium aluminum garnet to optically pump the laser. The laser cavity and output coupler are also mentioned. Work done so far includes fabricating light guides, measuring focal length and spot size, and developing a cooling system. Simulations have been run to optimize positioning of the light guide and characterize loss mechanisms. The next steps are to place the laser rod in the cavity, align it, and attempt to achieve lasing output. Further optimization and characterization will follow if lasing is achieved.
This document discusses a new design method for dome-shaped non-imaging Fresnel lenses that takes chromatic aberration into account. The proposed method uses two design wavelengths to cover the solar spectrum range and locates new design points on prism corners rather than centers. Numerical examples with 500x concentration were designed and evaluated via ray tracing simulations. Results show the new design produces lenses with a deeper dome shape and better optical efficiency at the acceptance half angle compared to the conventional single-wavelength design method. The proposed method is concluded to provide a more effective solar concentrator with some tolerance to solar incident angles.
The document discusses Shine's upcoming Spina Bifida and Hydrocephalus Awareness Week from October 19-26, 2014. It introduces a new #shinereflections initiative inviting people to submit short video clips about their experiences for the campaign. It also encourages everyone to participate in Wear Yellow and Shine activities during the awareness week. The bespoke Shine jewelry available for purchase is mentioned, with contact information provided.
O Dia dos Pais é uma data comemorativa para homenagear os pais e figuras paternas. É celebrado anualmente no segundo domingo de agosto em diversos países.
This document summarizes the design, development, and integration of a customized vibration isolated mobile trailer platform to meet optical requirements. The articulated vehicle system discussed includes a well bed full trailer with air bag suspension, auto leveling system, EMI shielded control room, 3-axis alignment system, metal sliding canopy, vibration isolation system, and nitrogen gas purging system. The study focuses on the performance requirements, system requirements, and technical details of integrating these sub-systems into the articulated vehicle to transport and align optical payloads over varied terrain while minimizing vibration.
Sereb despierta en una cabaña después de haber sido rescatada de la batalla por Altaír, una antigua compañera de su maestra Deneib. Altaír explica que pasaron dos años curando a Sereb y sus amigos. Su amigo el cazador ya despertó, pero Zetphilon se fue hace tiempo para resolver un asunto con su padre. Sereb se entera que mucho tiempo ha pasado desde su batalla con Kynior.
Seorang wirausahawan harus memiliki ide-ide baru yang dihasilkan dari suatu kreativitas. Kreativitas inilah yang akan membawa wirausahawan untuk ber-inovasi terhadap usahanya. Naisbitt dan Aburdene dalam Reinventing the Corporation menyatakan begitu perlunya suatu basis pendidikan yang dapat menciptakan kretaivitas dalam suatu masyarakat informasi baru. Mereka menyebutnya dengan proses TLC (Teaching, Learning, and creativity) yaitu suatu proses pembelajaran bagaiman berpikir (learning how to think), pembelajaran bagaimana belajar (learning how to learn), dan pembelajaran bagaimana menciptakan sesuatu (learning how to create).
Aula tic 2.0 en el ceip gibraltar.bloque 1 sesion 1Inma101
Este documento describe cómo crear y personalizar un blog educativo usando la plataforma Blogger. Explica los pasos para crear una cuenta de Gmail, iniciar sesión en Blogger, crear un nuevo blog, cambiar la apariencia seleccionando un diseño y colores diferentes, y agregar entradas nuevas. Proporciona enlaces a ejemplos de blogs educativos existentes para obtener ideas. El objetivo final es que los estudiantes aprendan a usar esta herramienta para compartir contenido en línea.
Este documento proporciona instrucciones sobre cómo usar Google Docs para crear, editar y compartir documentos con otros usuarios. Explica cómo iniciar sesión en Google Docs, crear nuevos documentos, invitar a otros como colaboradores o lectores para compartir documentos, subir documentos existentes, descargar documentos para editarlos de forma local y volver a subirlos, y cómo los colaboradores pueden editar documentos compartidos.
El documento proporciona información sobre los requerimientos y actividades escolares para los estudiantes de cuarto año básico de la próxima semana. La profesora jefe se ausentará por dos semanas debido a problemas de salud y será reemplazada por la profesora Marta Marambio. El documento detalla las asignaturas, materiales requeridos y evaluaciones para cada día de la semana.
Aula tic 2.0 en el ies antonio machado.bloque 1 sesión 1Inma101
El documento describe la instalación y uso del software de pizarra digital interactiva Smart Board en diferentes sistemas operativos. Explica cómo instalar Smart Notebook en Windows y las dos opciones para instalarlo en Guadalinex, dependiendo de la versión del sistema operativo Linux. También resume los pasos generales para usar correctamente la pizarra digital, como encender primero el cañón y luego la PDI.
Este documento es una factura emitida por Textiles Telar S.A.C. a Tejidos LA YETOA S.A.C. por la venta de 20 vestidos para damas a S/. 50 cada uno y 14 chompas para niñas a S/. 40 cada una, por un monto total de S/. 1,560 e IGV de S/. 296.40, para un total a pagar de S/. 1,856.40. La factura incluye los RUCs de las empresas, fecha de emisión, guías de remisión y datos de cancelación.
This document lists 41 publications by Wolfgang Brill related to solid phase organic synthesis and oligonucleotide chemistry. The publications span from 1989 to 2014 and include journal articles, book chapters, and patent applications. The publications cover topics such as solid phase synthesis of heterocycles, purines, and oligonucleotides; C-C and C-X bond forming reactions on solid support; and the development of protecting groups for use in solid phase synthesis.
Montreal Gardens is a place that displays unbelievable imagination. The gardens show incredible creativity and vision through unique design and features. In just a few sentences, the document hints at Montreal Gardens being an artistic outdoor space unlike anywhere else.
O documento descreve as principais atrações públicas de Caraguatatuba, incluindo o Morro São João com vista panorâmica, a Igreja Matriz de Santo Antônio fundada no século 17, e um obelisco inaugurado em 1919 para marcar o início da distribuição de água. Também menciona o Monumento Relógio de Sol construído em 1957 e a tradicional festa para Yemanjá na praia central com cerca de 10 mil participantes no ano passado.
Aula tic 2.0 en el ceip gibraltar.bloque 1 sesion 1Inma101
Este documento describe cómo crear y personalizar un blog educativo usando la plataforma Blogger. Explica los pasos para crear una cuenta de Gmail, iniciar sesión en Blogger, crear un nuevo blog, cambiar la apariencia seleccionando un diseño y colores diferentes, y agregar entradas nuevas. Proporciona enlaces a ejemplos de blogs educativos existentes para obtener ideas. El objetivo final es que los estudiantes aprendan a usar esta herramienta para compartir contenido en línea.
El documento habla sobre la encefalopatía, una condición médica que causa alteraciones en el estado mental y nivel de conciencia. Describe varios tipos de encefalopatía incluyendo las causadas por traumas, enfermedades estructurales del cerebro, trastornos metabólicos y no estructurales, y intoxicaciones. También menciona la escala de Glasgow para evaluar el nivel de conciencia de un paciente y los diferentes tipos de respuestas en el coma.
This document does not contain any meaningful content to summarize. It only lists the author as "120" without providing any additional context, details, or body of information to effectively summarize. No insightful summary can be generated from such a minimal document.
COMPARATIVE STUDY OF PARABOLIC TROUGH CONCENTRATORS IAEME Publication
In the present work two parabolic trough concentrator system of different rim angle and
different reflector aperture area is designed, fabricated, and evaluated, and operated for generate hot
water .There one system is 45° rim angle and next is of 90° rim angles, here reflector aperture area of
45° rim angle has operatically 20% more than 90° rim angle system, but remaining all other features
are same for both the 90° and 45° system. On operation of the system we gets nearly same efficiency
for both the system thus we observe that for all same equal features except of reflector aperture area,
the efficiency got 20+% more for 90° rim angle compare to 45° rim angle.
This document describes the design, fabrication, and performance evaluation of a low-cost parabolic trough solar collector with a copper receiver. Key features include a reflector made of acrylic sheet, a mild steel support structure, and a pure copper receiver pipe. Experimental testing found the collector achieved a maximum thermal efficiency of 52.35% and a temperature increase of 47°C. The total cost of the parabolic trough collector was calculated to be Rs 7,000, demonstrating its potential as an affordable solar thermal technology.
This document summarizes the design, development, and integration of a customized vibration isolated mobile trailer platform to meet optical requirements. The articulated vehicle system discussed includes a well bed full trailer with air bag suspension, auto leveling system, EMI shielded control room, 3-axis alignment system, metal sliding canopy, vibration isolation system, and nitrogen gas purging system. The study focuses on the performance requirements, system requirements, and technical details of integrating these sub-systems into the articulated vehicle to transport and align optical payloads over varied terrain while minimizing vibration.
Sereb despierta en una cabaña después de haber sido rescatada de la batalla por Altaír, una antigua compañera de su maestra Deneib. Altaír explica que pasaron dos años curando a Sereb y sus amigos. Su amigo el cazador ya despertó, pero Zetphilon se fue hace tiempo para resolver un asunto con su padre. Sereb se entera que mucho tiempo ha pasado desde su batalla con Kynior.
Seorang wirausahawan harus memiliki ide-ide baru yang dihasilkan dari suatu kreativitas. Kreativitas inilah yang akan membawa wirausahawan untuk ber-inovasi terhadap usahanya. Naisbitt dan Aburdene dalam Reinventing the Corporation menyatakan begitu perlunya suatu basis pendidikan yang dapat menciptakan kretaivitas dalam suatu masyarakat informasi baru. Mereka menyebutnya dengan proses TLC (Teaching, Learning, and creativity) yaitu suatu proses pembelajaran bagaiman berpikir (learning how to think), pembelajaran bagaimana belajar (learning how to learn), dan pembelajaran bagaimana menciptakan sesuatu (learning how to create).
Aula tic 2.0 en el ceip gibraltar.bloque 1 sesion 1Inma101
Este documento describe cómo crear y personalizar un blog educativo usando la plataforma Blogger. Explica los pasos para crear una cuenta de Gmail, iniciar sesión en Blogger, crear un nuevo blog, cambiar la apariencia seleccionando un diseño y colores diferentes, y agregar entradas nuevas. Proporciona enlaces a ejemplos de blogs educativos existentes para obtener ideas. El objetivo final es que los estudiantes aprendan a usar esta herramienta para compartir contenido en línea.
Este documento proporciona instrucciones sobre cómo usar Google Docs para crear, editar y compartir documentos con otros usuarios. Explica cómo iniciar sesión en Google Docs, crear nuevos documentos, invitar a otros como colaboradores o lectores para compartir documentos, subir documentos existentes, descargar documentos para editarlos de forma local y volver a subirlos, y cómo los colaboradores pueden editar documentos compartidos.
El documento proporciona información sobre los requerimientos y actividades escolares para los estudiantes de cuarto año básico de la próxima semana. La profesora jefe se ausentará por dos semanas debido a problemas de salud y será reemplazada por la profesora Marta Marambio. El documento detalla las asignaturas, materiales requeridos y evaluaciones para cada día de la semana.
Aula tic 2.0 en el ies antonio machado.bloque 1 sesión 1Inma101
El documento describe la instalación y uso del software de pizarra digital interactiva Smart Board en diferentes sistemas operativos. Explica cómo instalar Smart Notebook en Windows y las dos opciones para instalarlo en Guadalinex, dependiendo de la versión del sistema operativo Linux. También resume los pasos generales para usar correctamente la pizarra digital, como encender primero el cañón y luego la PDI.
Este documento es una factura emitida por Textiles Telar S.A.C. a Tejidos LA YETOA S.A.C. por la venta de 20 vestidos para damas a S/. 50 cada uno y 14 chompas para niñas a S/. 40 cada una, por un monto total de S/. 1,560 e IGV de S/. 296.40, para un total a pagar de S/. 1,856.40. La factura incluye los RUCs de las empresas, fecha de emisión, guías de remisión y datos de cancelación.
This document lists 41 publications by Wolfgang Brill related to solid phase organic synthesis and oligonucleotide chemistry. The publications span from 1989 to 2014 and include journal articles, book chapters, and patent applications. The publications cover topics such as solid phase synthesis of heterocycles, purines, and oligonucleotides; C-C and C-X bond forming reactions on solid support; and the development of protecting groups for use in solid phase synthesis.
Montreal Gardens is a place that displays unbelievable imagination. The gardens show incredible creativity and vision through unique design and features. In just a few sentences, the document hints at Montreal Gardens being an artistic outdoor space unlike anywhere else.
O documento descreve as principais atrações públicas de Caraguatatuba, incluindo o Morro São João com vista panorâmica, a Igreja Matriz de Santo Antônio fundada no século 17, e um obelisco inaugurado em 1919 para marcar o início da distribuição de água. Também menciona o Monumento Relógio de Sol construído em 1957 e a tradicional festa para Yemanjá na praia central com cerca de 10 mil participantes no ano passado.
Aula tic 2.0 en el ceip gibraltar.bloque 1 sesion 1Inma101
Este documento describe cómo crear y personalizar un blog educativo usando la plataforma Blogger. Explica los pasos para crear una cuenta de Gmail, iniciar sesión en Blogger, crear un nuevo blog, cambiar la apariencia seleccionando un diseño y colores diferentes, y agregar entradas nuevas. Proporciona enlaces a ejemplos de blogs educativos existentes para obtener ideas. El objetivo final es que los estudiantes aprendan a usar esta herramienta para compartir contenido en línea.
El documento habla sobre la encefalopatía, una condición médica que causa alteraciones en el estado mental y nivel de conciencia. Describe varios tipos de encefalopatía incluyendo las causadas por traumas, enfermedades estructurales del cerebro, trastornos metabólicos y no estructurales, y intoxicaciones. También menciona la escala de Glasgow para evaluar el nivel de conciencia de un paciente y los diferentes tipos de respuestas en el coma.
This document does not contain any meaningful content to summarize. It only lists the author as "120" without providing any additional context, details, or body of information to effectively summarize. No insightful summary can be generated from such a minimal document.
COMPARATIVE STUDY OF PARABOLIC TROUGH CONCENTRATORS IAEME Publication
In the present work two parabolic trough concentrator system of different rim angle and
different reflector aperture area is designed, fabricated, and evaluated, and operated for generate hot
water .There one system is 45° rim angle and next is of 90° rim angles, here reflector aperture area of
45° rim angle has operatically 20% more than 90° rim angle system, but remaining all other features
are same for both the 90° and 45° system. On operation of the system we gets nearly same efficiency
for both the system thus we observe that for all same equal features except of reflector aperture area,
the efficiency got 20+% more for 90° rim angle compare to 45° rim angle.
This document describes the design, fabrication, and performance evaluation of a low-cost parabolic trough solar collector with a copper receiver. Key features include a reflector made of acrylic sheet, a mild steel support structure, and a pure copper receiver pipe. Experimental testing found the collector achieved a maximum thermal efficiency of 52.35% and a temperature increase of 47°C. The total cost of the parabolic trough collector was calculated to be Rs 7,000, demonstrating its potential as an affordable solar thermal technology.
DESIGN, FABRICATION AND PERFORMANCE EVALUATION OF A LOWCOST PARABOLIC TROUGH ...IAEME Publication
In the present work, an attempt has been made to design, fabricate & evaluate the performance of Parabolic Trough Collector (PTC) to produce hot water. The Supporting stand of
concentrator is made of mild steel & reflector is made of acrylic sheet with a rim angle of 45o and aperture area of 2.14 m2
and with a concentration ratio of 12.59. The receiver pipe is made of pure copper. The thermal performance of the PTC was determined according to ASHRAE 93-1986 (RA 91). The maximum instantaneous thermal efficiency of 52.35% is obtained. The total cost of the parabolic trough collector is calculated as Rs 7,000.
IRJET- Design and Analysis of Linear Fresnel Reflector for Water HeatingIRJET Journal
This document describes the design and analysis of a linear Fresnel reflector system for water heating. Linear Fresnel reflectors use long, thin mirror segments to focus sunlight onto a fixed central absorber tube. The document outlines the working principle, key design parameters such as mirror width, tilt, and location. It then presents the specific design of a rooftop linear Fresnel reflector module, including tabulated values for the location and tilt of each mirror segment. Finally, it discusses performing a thermal analysis to evaluate the collector's performance at various solar radiation levels.
Development And Testing Of Parabolic Through Collectors For Domestic Applicat...IRJET Journal
- The document describes the development and testing of a parabolic trough collector for domestic water heating applications.
- An experimental setup was created using grade 204 stainless steel for the reflector and copper tubing for the absorber. Testing showed a slight increase in water outlet temperature compared to a simple parabolic trough collector design.
- The results demonstrate the potential of this low-cost design for solar water heating in homes, with applications also including water desalination and increasing steam power generation.
IRJET- Design and Analysis of Absorber Tube of Solar Parabolic trough CollectorIRJET Journal
This document discusses a computational fluid dynamics (CFD) analysis of the fluid flow and heat transfer in the absorber tube of a parabolic trough solar collector with and without internal inserts. The CFD analysis is conducted to study the effect of different insert profiles on heat transfer and compare results to an absorber tube without inserts. The goal is to improve the efficiency of heat transfer from the absorber tube wall to the working fluid by increasing contact area between the fluid and tube, increasing residual time of the fluid, and decreasing fluid velocity using inserts or internal fins.
This document summarizes the design and analysis of a parabolic dish solar collector's efficiency under different seasons in Bhopal, India. It describes the experimental apparatus, which includes a 3.99 meter parabolic dish collector with a receiver placed at the focal point. Temperature and pressure data from the receiver are acquired using a data logging system. The document analyzes formulas used to calculate key parameters like the collector's aperture area, receiver area, solar altitude and azimuth angles, and sunrise/sunset times under different seasons. The results provide insight into how the collector's efficiency varies with weather conditions in Bhopal throughout the year.
DESIGN AND THERMAL ASPECTS OF WATER COOLED PRIMARY MIRROR FOR SYNCHROTRON RAD...IAEME Publication
This paper describes the thermal analysis of water cooled primary mirror used in BL-23 of Indus-2 at RRCAT in which the mirror thermal deformation was minimized for acceptable optical performance. The primary mirror separates the visible part from synchrotron radiation by reflecting visible part to perpendicular plane. In worst condition the primary mirror will be subjected to intense heat load of 150 W, primarily due to X-Ray absorption. This intense heat load will distort the reflecting surface
1) The document describes a thermal analysis of a water-cooled primary mirror used in a synchrotron radiation beamline. Intense heat loads could distort the mirror's reflecting surface.
2) Finite element modeling in ANSYS was used to study how geometric parameters like cooling channel diameter, position, and coolant flow rate affect thermal deformation.
3) The analysis found that with 4mm diameter cooling channels positioned 4.5mm from the surface, thermal deformation of the mirror's reflecting surface could be maintained between 20-30 micrometers, ensuring reliable imaging performance.
This document summarizes research analyzing heat losses in a compact Fresnel linear reflector solar power system with trapezoidal absorbers. The system aims to directly heat water to generate steam, improving efficiency over thermal oil systems. Heat loss is analyzed through adjusting cavity angles, depths, and insulation thickness. A thermal resistance circuit model is used to calculate heat losses from the absorber and cavity through convection and radiation. The goal is to determine the most efficient configuration for this concentrated solar power technology.
DESIGN, OPTIMIZATION AND DEVELOPMENT OF SOLAR THERMAL HEAT RECEIVER SYSTEM WI...Journal For Research
Against a backdrop of our world’s changing climate solar thermal power generation shows great potential to move global energy production away from fossil fuels to non-polluting sources. A parameter study was conducted based on the previous analysis to improve specific aspects of the initial design using a value of benefit analysis to evaluate the different design. This project focused on the design, analysis and verification of a high temperature solar receiver. Computational Fluid Dynamic (CFD) analysis of Radiation model is carried out with new geometry design of receiver. Discrete Transfer Radiation Model (DTRM) model is used for numerical simulation.
This document discusses the design, optimization, and development of a solar thermal heat receiver system with a parabolic concentric collector. A computational fluid dynamics (CFD) analysis was conducted using a discrete transfer radiation model (DTRM) to simulate heat transfer and optimize the receiver design. The CFD analysis found that the receiver design achieved an average temperature of 453K on the receiver wall and outlet temperature of air at 392K with an air mass flow rate of 0.08kg/s. Higher temperatures can be achieved by using materials with higher reflectivity for the reflector and selecting optimal working fluids.
Modeling and Testing of a PV/T hybrid system with Water based Optical FilterIJERA Editor
A theoretical model has been developed for the Non-imaging V-trough hybrid PV/T concentrator systems along
with optical filter and validated with the designed and fabricated system to assess over all thermal efficiency of
the PV/T system. A V-trough concentrator system has been developed for two axes tracking. Commercially
available solar modules were evaluated for their usability under 2-sun concentration. V-trough concentrator with
geometric concentration ratio of 2 (2-sun), we are getting an average overall efficiency of the PV/T system
increased by 23.54 % extra overall thermal efficiency of the PV/T system as compared to the solar module
efficiency at standard test conditions.
IRJET- Analysing Efficiency of Solar Collector using ETC Absorber TubeIRJET Journal
The document analyzes the efficiency of a solar collector using an evacuated tube (ETC) absorber. It describes testing a parabolic trough solar collector initially and then with different absorbers to enhance performance. Testing was conducted at KIET, Ghaziabad from morning to evening. Results found that efficiency increased by around 8% when using an ETC tube compared to other absorbers. The highest temperature difference of 23.3°C was achieved with the ETC tube at an air flow rate of 28.5 kg/hr. Overall, the efficiency of an ordinary collector was 9-21% during the day, which increased to 10-23.4% when using an ETC absorber tube.
IRJET- Numerical Analysis of Twisted Tape Absorber Tube of Solar Parabolic Tr...IRJET Journal
This document numerically analyzes the fluid flow in a twisted tape absorber tube of a parabolic trough solar collector to improve efficiency. It studies the effect of heat transfer in absorber tubes with different velocity profiles. The analysis finds that a twisted tape insert increases the outlet temperature compared to a plain tube. At low velocity of 0.1 m/s, the outlet temperature is 322K for the twisted tape tube, while it is lower at 309K for the higher velocity of 1.2 m/s. The absorber tube with twisted tape insert provides better performance at lower minimum velocities.
Cobalt-60 is commonly used as a gamma ray source for teletherapy due to its suitable properties. A Co-60 unit contains a sealed radioactive Co-60 source that emits two gamma rays during decay. The source is moved between shielded and treatment positions using various mechanisms. Beam size and shape are controlled through collimation and additional devices can modify the beam. Precise patient and beam positioning is enabled through computer control and motorized components while shielding protects staff from radiation.
This document discusses the square microstrip patch antenna. It describes the basic construction and working of the antenna, which consists of a thin metallic patch placed on a ground plane with dielectric material in between. The patch can be square, circular, or rectangular in shape. The document lists some disadvantages of microstrip antennas, such as low efficiency and gain. It also outlines some advantages, including small size, easy fabrication, and ability to support multiple frequencies. Applications mentioned include use in spacecraft, aircraft, telemedicine, and mobile/satellite communication. The document provides details on simulating a square patch antenna model.
Module of fiber coupled diode laser based on 808nm single emitter combinationNaku Technology Co,. Ltd
Because of the good beam quality and heat dissipation of single emitter diode laser, it is more resuitable to be used in the source of electro-optic countermeasure. Aim at the responer curve of charge-coupled device (CCD) spectrum, 808nm single emitter is used as unitsource and 24 single emitters are divided into four groups. In order to increase the output power intensity, space sombination and polarization combination are used in the experiment. Combined beam is focused in an optical fiber through the focused lens group designed by ourself. All the single emittwes are connected inseries. When the drive current is 8.5A, 162W output power is obtained from a 300um fiber core with a numerical aperture of 0.22 at 808nm and coupling efficiency of 84%.
IRJET- Optimisation of Solar Collector’s Efficiency using Copper TubeIRJET Journal
1. The document discusses optimizing the efficiency of a solar collector by using a copper tube filled with pebbles as the absorber.
2. Test results showed using the copper tube with pebbles increased maximum air temperature by about 20°C and collector efficiency by about 6% compared to using a plain copper tube.
3. Convection losses were reduced and heat transfer rate increased significantly when using the copper tube filled with pebbles absorber configuration.
Enhancement of Heat Tranfer in Solar Air Heater Providing with Different Turb...IRJET Journal
1) The document discusses using computational fluid dynamics (CFD) analysis to study the effect of different turbulator shapes on heat transfer and friction factor in a solar air heater duct.
2) Ellipse, rectangular, semi-circular and NACA profile turbulators were analyzed and compared to a smooth duct surface. The semi-circular turbulators provided the best balance of increased heat transfer and moderate friction losses.
3) CFD analysis was conducted using the RNG k-epsilon turbulence model over a Reynolds number range of 6000 to 18000. Results for Nusselt number and friction factor were compared to empirical correlations and showed good agreement.
Submission Deadline: 30th September 2022
Acceptance Notification: Within Three Days’ time period
Online Publication: Within 24 Hrs. time Period
Expected Date of Dispatch of Printed Journal: 5th October 2022
MODELING AND ANALYSIS OF SURFACE ROUGHNESS AND WHITE LATER THICKNESS IN WIRE-...IAEME Publication
White layer thickness (WLT) formed and surface roughness in wire electric discharge turning (WEDT) of tungsten carbide composite has been made to model through response surface methodology (RSM). A Taguchi’s standard Design of experiments involving five input variables with three levels has been employed to establish a mathematical model between input parameters and responses. Percentage of cobalt content, spindle speed, Pulse on-time, wire feed and pulse off-time were changed during the experimental tests based on the Taguchi’s orthogonal array L27 (3^13). Analysis of variance (ANOVA) revealed that the mathematical models obtained can adequately describe performance within the parameters of the factors considered. There was a good agreement between the experimental and predicted values in this study.
A STUDY ON THE REASONS FOR TRANSGENDER TO BECOME ENTREPRENEURSIAEME Publication
The study explores the reasons for a transgender to become entrepreneurs. In this study transgender entrepreneur was taken as independent variable and reasons to become as dependent variable. Data were collected through a structured questionnaire containing a five point Likert Scale. The study examined the data of 30 transgender entrepreneurs in Salem Municipal Corporation of Tamil Nadu State, India. Simple Random sampling technique was used. Garrett Ranking Technique (Percentile Position, Mean Scores) was used as the analysis for the present study to identify the top 13 stimulus factors for establishment of trans entrepreneurial venture. Economic advancement of a nation is governed upon the upshot of a resolute entrepreneurial doings. The conception of entrepreneurship has stretched and materialized to the socially deflated uncharted sections of transgender community. Presently transgenders have smashed their stereotypes and are making recent headlines of achievements in various fields of our Indian society. The trans-community is gradually being observed in a new light and has been trying to achieve prospective growth in entrepreneurship. The findings of the research revealed that the optimistic changes are taking place to change affirmative societal outlook of the transgender for entrepreneurial ventureship. It also laid emphasis on other transgenders to renovate their traditional living. The paper also highlights that legislators, supervisory body should endorse an impartial canons and reforms in Tamil Nadu Transgender Welfare Board Association.
BROAD UNEXPOSED SKILLS OF TRANSGENDER ENTREPRENEURSIAEME Publication
Since ages gender difference is always a debatable theme whether caused by nature, evolution or environment. The birth of a transgender is dreadful not only for the child but also for their parents. The pain of living in the wrong physique and treated as second class victimized citizen is outrageous and fully harboured with vicious baseless negative scruples. For so long, social exclusion had perpetuated inequality and deprivation experiencing ingrained malign stigma and besieged victims of crime or violence across their life spans. They are pushed into the murky way of life with a source of eternal disgust, bereft sexual potency and perennial fear. Although they are highly visible but very little is known about them. The common public needs to comprehend the ravaged arrogance on these insensitive souls and assist in integrating them into the mainstream by offering equal opportunity, treat with humanity and respect their dignity. Entrepreneurship in the current age is endorsing the gender fairness movement. Unstable careers and economic inadequacy had inclined one of the gender variant people called Transgender to become entrepreneurs. These tiny budding entrepreneurs resulted in economic transition by means of employment, free from the clutches of stereotype jobs, raised standard of living and handful of financial empowerment. Besides all these inhibitions, they were able to witness a platform for skill set development that ignited them to enter into entrepreneurial domain. This paper epitomizes skill sets involved in trans-entrepreneurs of Thoothukudi Municipal Corporation of Tamil Nadu State and is a groundbreaking determination to sightsee various skills incorporated and the impact on entrepreneurship.
DETERMINANTS AFFECTING THE USER'S INTENTION TO USE MOBILE BANKING APPLICATIONSIAEME Publication
The banking and financial services industries are experiencing increased technology penetration. Among them, the banking industry has made technological advancements to better serve the general populace. The economy focused on transforming the banking sector's system into a cashless, paperless, and faceless one. The researcher wants to evaluate the user's intention for utilising a mobile banking application. The study also examines the variables affecting the user's behaviour intention when selecting specific applications for financial transactions. The researcher employed a well-structured questionnaire and a descriptive study methodology to gather the respondents' primary data utilising the snowball sampling technique. The study includes variables like performance expectations, effort expectations, social impact, enabling circumstances, and perceived risk. Each of the aforementioned variables has a major impact on how users utilise mobile banking applications. The outcome will assist the service provider in comprehending the user's history with mobile banking applications.
ANALYSE THE USER PREDILECTION ON GPAY AND PHONEPE FOR DIGITAL TRANSACTIONSIAEME Publication
Technology upgradation in banking sector took the economy to view that payment mode towards online transactions using mobile applications. This system enabled connectivity between banks, Merchant and user in a convenient mode. there are various applications used for online transactions such as Google pay, Paytm, freecharge, mobikiwi, oxygen, phonepe and so on and it also includes mobile banking applications. The study aimed at evaluating the predilection of the user in adopting digital transaction. The study is descriptive in nature. The researcher used random sample techniques to collect the data. The findings reveal that mobile applications differ with the quality of service rendered by Gpay and Phonepe. The researcher suggest the Phonepe application should focus on implementing the application should be user friendly interface and Gpay on motivating the users to feel the importance of request for money and modes of payments in the application.
VOICE BASED ATM FOR VISUALLY IMPAIRED USING ARDUINOIAEME Publication
The prototype of a voice-based ATM for visually impaired using Arduino is to help people who are blind. This uses RFID cards which contain users fingerprint encrypted on it and interacts with the users through voice commands. ATM operates when sensor detects the presence of one person in the cabin. After scanning the RFID card, it will ask to select the mode like –normal or blind. User can select the respective mode through voice input, if blind mode is selected the balance check or cash withdraw can be done through voice input. Normal mode procedure is same as the existing ATM.
IMPACT OF EMOTIONAL INTELLIGENCE ON HUMAN RESOURCE MANAGEMENT PRACTICES AMONG...IAEME Publication
There is increasing acceptability of emotional intelligence as a major factor in personality assessment and effective human resource management. Emotional intelligence as the ability to build capacity, empathize, co-operate, motivate and develop others cannot be divorced from both effective performance and human resource management systems. The human person is crucial in defining organizational leadership and fortunes in terms of challenges and opportunities and walking across both multinational and bilateral relationships. The growing complexity of the business world requires a great deal of self-confidence, integrity, communication, conflict and diversity management to keep the global enterprise within the paths of productivity and sustainability. Using the exploratory research design and 255 participants the result of this original study indicates strong positive correlation between emotional intelligence and effective human resource management. The paper offers suggestions on further studies between emotional intelligence and human capital development and recommends for conflict management as an integral part of effective human resource management.
VISUALISING AGING PARENTS & THEIR CLOSE CARERS LIFE JOURNEY IN AGING ECONOMYIAEME Publication
Our life journey, in general, is closely defined by the way we understand the meaning of why we coexist and deal with its challenges. As we develop the "inspiration economy", we could say that nearly all of the challenges we have faced are opportunities that help us to discover the rest of our journey. In this note paper, we explore how being faced with the opportunity of being a close carer for an aging parent with dementia brought intangible discoveries that changed our insight of the meaning of the rest of our life journey.
A STUDY ON THE IMPACT OF ORGANIZATIONAL CULTURE ON THE EFFECTIVENESS OF PERFO...IAEME Publication
The main objective of this study is to analyze the impact of aspects of Organizational Culture on the Effectiveness of the Performance Management System (PMS) in the Health Care Organization at Thanjavur. Organizational Culture and PMS play a crucial role in present-day organizations in achieving their objectives. PMS needs employees’ cooperation to achieve its intended objectives. Employees' cooperation depends upon the organization’s culture. The present study uses exploratory research to examine the relationship between the Organization's culture and the Effectiveness of the Performance Management System. The study uses a Structured Questionnaire to collect the primary data. For this study, Thirty-six non-clinical employees were selected from twelve randomly selected Health Care organizations at Thanjavur. Thirty-two fully completed questionnaires were received.
Living in 21st century in itself reminds all of us the necessity of police and its administration. As more and more we are entering into the modern society and culture, the more we require the services of the so called ‘Khaki Worthy’ men i.e., the police personnel. Whether we talk of Indian police or the other nation’s police, they all have the same recognition as they have in India. But as already mentioned, their services and requirements are different after the like 26th November, 2008 incidents, where they without saving their own lives has sacrificed themselves without any hitch and without caring about their respective family members and wards. In other words, they are like our heroes and mentors who can guide us from the darkness of fear, militancy, corruption and other dark sides of life and so on. Now the question arises, if Gandhi would have been alive today, what would have been his reaction/opinion to the police and its functioning? Would he have some thing different in his mind now what he had been in his mind before the partition or would he be going to start some Satyagraha in the form of some improvement in the functioning of the police administration? Really these questions or rather night mares can come to any one’s mind, when there is too much confusion is prevailing in our minds, when there is too much corruption in the society and when the polices working is also in the questioning because of one or the other case throughout the India. It is matter of great concern that we have to thing over our administration and our practical approach because the police personals are also like us, they are part and parcel of our society and among one of us, so why we all are pin pointing towards them.
A STUDY ON TALENT MANAGEMENT AND ITS IMPACT ON EMPLOYEE RETENTION IN SELECTED...IAEME Publication
The goal of this study was to see how talent management affected employee retention in the selected IT organizations in Chennai. The fundamental issue was the difficulty to attract, hire, and retain talented personnel who perform well and the gap between supply and demand of talent acquisition and retaining them within the firms. The study's main goals were to determine the impact of talent management on employee retention in IT companies in Chennai, investigate talent management strategies that IT companies could use to improve talent acquisition, performance management, career planning and formulate retention strategies that the IT firms could use. The respondents were given a structured close-ended questionnaire with the 5 Point Likert Scale as part of the study's quantitative research design. The target population consisted of 289 IT professionals. The questionnaires were distributed and collected by the researcher directly. The Statistical Package for Social Sciences (SPSS) was used to collect and analyse the questionnaire responses. Hypotheses that were formulated for the various areas of the study were tested using a variety of statistical tests. The key findings of the study suggested that talent management had an impact on employee retention. The studies also found that there is a clear link between the implementation of talent management and retention measures. Management should provide enough training and development for employees, clarify job responsibilities, provide adequate remuneration packages, and recognise employees for exceptional performance.
ATTRITION IN THE IT INDUSTRY DURING COVID-19 PANDEMIC: LINKING EMOTIONAL INTE...IAEME Publication
Globally, Millions of dollars were spent by the organizations for employing skilled Information Technology (IT) professionals. It is costly to replace unskilled employees with IT professionals possessing technical skills and competencies that aid in interconnecting the business processes. The organization’s employment tactics were forced to alter by globalization along with technological innovations as they consistently diminish to remain lean, outsource to concentrate on core competencies along with restructuring/reallocate personnel to gather efficiency. As other jobs, organizations or professions have become reasonably more appropriate in a shifting employment landscape, the above alterations trigger both involuntary as well as voluntary turnover. The employee view on jobs is also afflicted by the COVID-19 pandemic along with the employee-driven labour market. So, having effective strategies is necessary to tackle the withdrawal rate of employees. By associating Emotional Intelligence (EI) along with Talent Management (TM) in the IT industry, the rise in attrition rate was analyzed in this study. Only 303 respondents were collected out of 350 participants to whom questionnaires were distributed. From the employees of IT organizations located in Bangalore (India), the data were congregated. A simple random sampling methodology was employed to congregate data as of the respondents. Generating the hypothesis along with testing is eventuated. The effect of EI and TM along with regression analysis between TM and EI was analyzed. The outcomes indicated that employee and Organizational Performance (OP) were elevated by effective EI along with TM.
INFLUENCE OF TALENT MANAGEMENT PRACTICES ON ORGANIZATIONAL PERFORMANCE A STUD...IAEME Publication
By implementing talent management strategy, organizations would have the option to retain their skilled professionals while additionally working on their overall performance. It is the course of appropriately utilizing the ideal individuals, setting them up for future top positions, exploring and dealing with their performance, and holding them back from leaving the organization. It is employee performance that determines the success of every organization. The firm quickly obtains an upper hand over its rivals in the event that its employees having particular skills that cannot be duplicated by the competitors. Thus, firms are centred on creating successful talent management practices and processes to deal with the unique human resources. Firms are additionally endeavouring to keep their top/key staff since on the off chance that they leave; the whole store of information leaves the firm's hands. The study's objective was to determine the impact of talent management on organizational performance among the selected IT organizations in Chennai. The study recommends that talent management limitedly affects performance. On the off chance that this talent is appropriately management and implemented properly, organizations might benefit as much as possible from their maintained assets to support development and productivity, both monetarily and non-monetarily.
A STUDY OF VARIOUS TYPES OF LOANS OF SELECTED PUBLIC AND PRIVATE SECTOR BANKS...IAEME Publication
Banking regulations act of India, 1949 defines banking as “acceptance of deposits for the purpose of lending or investment from the public, repayment on demand or otherwise and withdrawable through cheques, drafts order or otherwise”, the major participants of the Indian financial system are commercial banks, the financial institution encompassing term lending institutions. Investments institutions, specialized financial institution and the state level development banks, non banking financial companies (NBFC) and other market intermediaries such has the stock brokers and money lenders are among the oldest of the certain variants of NBFC and the oldest market participants. The asset quality of banks is one of the most important indicators of their financial health. The Indian banking sector has been facing severe problems of increasing Non- Performing Assets (NPAs). The NPAs growth directly and indirectly affects the quality of assets and profitability of banks. It also shows the efficiency of banks credit risk management and the recovery effectiveness. NPA do not generate any income, whereas, the bank is required to make provisions for such as assets that why is a double edge weapon. This paper outlines the concept of quality of bank loans of different types like Housing, Agriculture and MSME loans in state Haryana of selected public and private sector banks. This study is highlighting problems associated with the role of commercial bank in financing Small and Medium Scale Enterprises (SME). The overall objective of the research was to assess the effect of the financing provisions existing for the setting up and operations of MSMEs in the country and to generate recommendations for more robust financing mechanisms for successful operation of the MSMEs, in turn understanding the impact of MSME loans on financial institutions due to NPA. There are many research conducted on the topic of Non- Performing Assets (NPA) Management, concerning particular bank, comparative study of public and private banks etc. In this paper the researcher is considering the aggregate data of selected public sector and private sector banks and attempts to compare the NPA of Housing, Agriculture and MSME loans in state Haryana of public and private sector banks. The tools used in the study are average and Anova test and variance. The findings reveal that NPA is common problem for both public and private sector banks and is associated with all types of loans either that is housing loans, agriculture loans and loans to SMES. NPAs of both public and private sector banks show the increasing trend. In 2010-11 GNPA of public and private sector were at same level it was 2% but after 2010-11 it increased in many fold and at present there is GNPA in some more than 15%. It shows the dark area of Indian banking sector.
EXPERIMENTAL STUDY OF MECHANICAL AND TRIBOLOGICAL RELATION OF NYLON/BaSO4 POL...IAEME Publication
An experiment conducted in this study found that BaSO4 changed Nylon 6's mechanical properties. By changing the weight ratios, BaSO4 was used to make Nylon 6. This Researcher looked into how hard Nylon-6/BaSO4 composites are and how well they wear. Experiments were done based on Taguchi design L9. Nylon-6/BaSO4 composites can be tested for their hardness number using a Rockwell hardness testing apparatus. On Nylon/BaSO4, the wear behavior was measured by a wear monitor, pinon-disc friction by varying reinforcement, sliding speed, and sliding distance, and the microstructure of the crack surfaces was observed by SEM. This study provides significant contributions to ultimate strength by increasing BaSO4 content up to 16% in the composites, and sliding speed contributes 72.45% to the wear rate
ROLE OF SOCIAL ENTREPRENEURSHIP IN RURAL DEVELOPMENT OF INDIA - PROBLEMS AND ...IAEME Publication
The majority of the population in India lives in villages. The village is the back bone of the country. Village or rural industries play an important role in the national economy, particularly in the rural development. Developing the rural economy is one of the key indicators towards a country’s success. Whether it be the need to look after the welfare of the farmers or invest in rural infrastructure, Governments have to ensure that rural development isn’t compromised. The economic development of our country largely depends on the progress of rural areas and the standard of living of rural masses. Village or rural industries play an important role in the national economy, particularly in the rural development. Rural entrepreneurship is based on stimulating local entrepreneurial talent and the subsequent growth of indigenous enterprises. It recognizes opportunity in the rural areas and accelerates a unique blend of resources either inside or outside of agriculture. Rural entrepreneurship brings an economic value to the rural sector by creating new methods of production, new markets, new products and generate employment opportunities thereby ensuring continuous rural development. Social Entrepreneurship has the direct and primary objective of serving the society along with the earning profits. So, social entrepreneurship is different from the economic entrepreneurship as its basic objective is not to earn profits but for providing innovative solutions to meet the society needs which are not taken care by majority of the entrepreneurs as they are in the business for profit making as a sole objective. So, the Social Entrepreneurs have the huge growth potential particularly in the developing countries like India where we have huge societal disparities in terms of the financial positions of the population. Still 22 percent of the Indian population is below the poverty line and also there is disparity among the rural & urban population in terms of families living under BPL. 25.7 percent of the rural population & 13.7 percent of the urban population is under BPL which clearly shows the disparity of the poor people in the rural and urban areas. The need to develop social entrepreneurship in agriculture is dictated by a large number of social problems. Such problems include low living standards, unemployment, and social tension. The reasons that led to the emergence of the practice of social entrepreneurship are the above factors. The research problem lays upon disclosing the importance of role of social entrepreneurship in rural development of India. The paper the tendencies of social entrepreneurship in India, to present successful examples of such business for providing recommendations how to improve situation in rural areas in terms of social entrepreneurship development. Indian government has made some steps towards development of social enterprises, social entrepreneurship, and social in- novation, but a lot remains to be improved.
OPTIMAL RECONFIGURATION OF POWER DISTRIBUTION RADIAL NETWORK USING HYBRID MET...IAEME Publication
Distribution system is a critical link between the electric power distributor and the consumers. Most of the distribution networks commonly used by the electric utility is the radial distribution network. However in this type of network, it has technical issues such as enormous power losses which affect the quality of the supply. Nowadays, the introduction of Distributed Generation (DG) units in the system help improve and support the voltage profile of the network as well as the performance of the system components through power loss mitigation. In this study network reconfiguration was done using two meta-heuristic algorithms Particle Swarm Optimization and Gravitational Search Algorithm (PSO-GSA) to enhance power quality and voltage profile in the system when simultaneously applied with the DG units. Backward/Forward Sweep Method was used in the load flow analysis and simulated using the MATLAB program. Five cases were considered in the Reconfiguration based on the contribution of DG units. The proposed method was tested using IEEE 33 bus system. Based on the results, there was a voltage profile improvement in the system from 0.9038 p.u. to 0.9594 p.u.. The integration of DG in the network also reduced power losses from 210.98 kW to 69.3963 kW. Simulated results are drawn to show the performance of each case.
APPLICATION OF FRUGAL APPROACH FOR PRODUCTIVITY IMPROVEMENT - A CASE STUDY OF...IAEME Publication
Manufacturing industries have witnessed an outburst in productivity. For productivity improvement manufacturing industries are taking various initiatives by using lean tools and techniques. However, in different manufacturing industries, frugal approach is applied in product design and services as a tool for improvement. Frugal approach contributed to prove less is more and seems indirectly contributing to improve productivity. Hence, there is need to understand status of frugal approach application in manufacturing industries. All manufacturing industries are trying hard and putting continuous efforts for competitive existence. For productivity improvements, manufacturing industries are coming up with different effective and efficient solutions in manufacturing processes and operations. To overcome current challenges, manufacturing industries have started using frugal approach in product design and services. For this study, methodology adopted with both primary and secondary sources of data. For primary source interview and observation technique is used and for secondary source review has done based on available literatures in website, printed magazines, manual etc. An attempt has made for understanding application of frugal approach with the study of manufacturing industry project. Manufacturing industry selected for this project study is Mahindra and Mahindra Ltd. This paper will help researcher to find the connections between the two concepts productivity improvement and frugal approach. This paper will help to understand significance of frugal approach for productivity improvement in manufacturing industry. This will also help to understand current scenario of frugal approach in manufacturing industry. In manufacturing industries various process are involved to deliver the final product. In the process of converting input in to output through manufacturing process productivity plays very critical role. Hence this study will help to evolve status of frugal approach in productivity improvement programme. The notion of frugal can be viewed as an approach towards productivity improvement in manufacturing industries.
A MULTIPLE – CHANNEL QUEUING MODELS ON FUZZY ENVIRONMENTIAEME Publication
In this paper, we investigated a queuing model of fuzzy environment-based a multiple channel queuing model (M/M/C) ( /FCFS) and study its performance under realistic conditions. It applies a nonagonal fuzzy number to analyse the relevant performance of a multiple channel queuing model (M/M/C) ( /FCFS). Based on the sub interval average ranking method for nonagonal fuzzy number, we convert fuzzy number to crisp one. Numerical results reveal that the efficiency of this method. Intuitively, the fuzzy environment adapts well to a multiple channel queuing models (M/M/C) ( /FCFS) are very well.
This talk will cover ScyllaDB Architecture from the cluster-level view and zoom in on data distribution and internal node architecture. In the process, we will learn the secret sauce used to get ScyllaDB's high availability and superior performance. We will also touch on the upcoming changes to ScyllaDB architecture, moving to strongly consistent metadata and tablets.
In the realm of cybersecurity, offensive security practices act as a critical shield. By simulating real-world attacks in a controlled environment, these techniques expose vulnerabilities before malicious actors can exploit them. This proactive approach allows manufacturers to identify and fix weaknesses, significantly enhancing system security.
This presentation delves into the development of a system designed to mimic Galileo's Open Service signal using software-defined radio (SDR) technology. We'll begin with a foundational overview of both Global Navigation Satellite Systems (GNSS) and the intricacies of digital signal processing.
The presentation culminates in a live demonstration. We'll showcase the manipulation of Galileo's Open Service pilot signal, simulating an attack on various software and hardware systems. This practical demonstration serves to highlight the potential consequences of unaddressed vulnerabilities, emphasizing the importance of offensive security practices in safeguarding critical infrastructure.
Essentials of Automations: Exploring Attributes & Automation ParametersSafe Software
Building automations in FME Flow can save time, money, and help businesses scale by eliminating data silos and providing data to stakeholders in real-time. One essential component to orchestrating complex automations is the use of attributes & automation parameters (both formerly known as “keys”). In fact, it’s unlikely you’ll ever build an Automation without using these components, but what exactly are they?
Attributes & automation parameters enable the automation author to pass data values from one automation component to the next. During this webinar, our FME Flow Specialists will cover leveraging the three types of these output attributes & parameters in FME Flow: Event, Custom, and Automation. As a bonus, they’ll also be making use of the Split-Merge Block functionality.
You’ll leave this webinar with a better understanding of how to maximize the potential of automations by making use of attributes & automation parameters, with the ultimate goal of setting your enterprise integration workflows up on autopilot.
The Microsoft 365 Migration Tutorial For Beginner.pptxoperationspcvita
This presentation will help you understand the power of Microsoft 365. However, we have mentioned every productivity app included in Office 365. Additionally, we have suggested the migration situation related to Office 365 and how we can help you.
You can also read: https://www.systoolsgroup.com/updates/office-365-tenant-to-tenant-migration-step-by-step-complete-guide/
Northern Engraving | Nameplate Manufacturing Process - 2024Northern Engraving
Manufacturing custom quality metal nameplates and badges involves several standard operations. Processes include sheet prep, lithography, screening, coating, punch press and inspection. All decoration is completed in the flat sheet with adhesive and tooling operations following. The possibilities for creating unique durable nameplates are endless. How will you create your brand identity? We can help!
GlobalLogic Java Community Webinar #18 “How to Improve Web Application Perfor...GlobalLogic Ukraine
Під час доповіді відповімо на питання, навіщо потрібно підвищувати продуктивність аплікації і які є найефективніші способи для цього. А також поговоримо про те, що таке кеш, які його види бувають та, основне — як знайти performance bottleneck?
Відео та деталі заходу: https://bit.ly/45tILxj
[OReilly Superstream] Occupy the Space: A grassroots guide to engineering (an...Jason Yip
The typical problem in product engineering is not bad strategy, so much as “no strategy”. This leads to confusion, lack of motivation, and incoherent action. The next time you look for a strategy and find an empty space, instead of waiting for it to be filled, I will show you how to fill it in yourself. If you’re wrong, it forces a correction. If you’re right, it helps create focus. I’ll share how I’ve approached this in the past, both what works and lessons for what didn’t work so well.
"Scaling RAG Applications to serve millions of users", Kevin GoedeckeFwdays
How we managed to grow and scale a RAG application from zero to thousands of users in 7 months. Lessons from technical challenges around managing high load for LLMs, RAGs and Vector databases.
Dandelion Hashtable: beyond billion requests per second on a commodity serverAntonios Katsarakis
This slide deck presents DLHT, a concurrent in-memory hashtable. Despite efforts to optimize hashtables, that go as far as sacrificing core functionality, state-of-the-art designs still incur multiple memory accesses per request and block request processing in three cases. First, most hashtables block while waiting for data to be retrieved from memory. Second, open-addressing designs, which represent the current state-of-the-art, either cannot free index slots on deletes or must block all requests to do so. Third, index resizes block every request until all objects are copied to the new index. Defying folklore wisdom, DLHT forgoes open-addressing and adopts a fully-featured and memory-aware closed-addressing design based on bounded cache-line-chaining. This design offers lock-free index operations and deletes that free slots instantly, (2) completes most requests with a single memory access, (3) utilizes software prefetching to hide memory latencies, and (4) employs a novel non-blocking and parallel resizing. In a commodity server and a memory-resident workload, DLHT surpasses 1.6B requests per second and provides 3.5x (12x) the throughput of the state-of-the-art closed-addressing (open-addressing) resizable hashtable on Gets (Deletes).
What is an RPA CoE? Session 1 – CoE VisionDianaGray10
In the first session, we will review the organization's vision and how this has an impact on the COE Structure.
Topics covered:
• The role of a steering committee
• How do the organization’s priorities determine CoE Structure?
Speaker:
Chris Bolin, Senior Intelligent Automation Architect Anika Systems
Conversational agents, or chatbots, are increasingly used to access all sorts of services using natural language. While open-domain chatbots - like ChatGPT - can converse on any topic, task-oriented chatbots - the focus of this paper - are designed for specific tasks, like booking a flight, obtaining customer support, or setting an appointment. Like any other software, task-oriented chatbots need to be properly tested, usually by defining and executing test scenarios (i.e., sequences of user-chatbot interactions). However, there is currently a lack of methods to quantify the completeness and strength of such test scenarios, which can lead to low-quality tests, and hence to buggy chatbots.
To fill this gap, we propose adapting mutation testing (MuT) for task-oriented chatbots. To this end, we introduce a set of mutation operators that emulate faults in chatbot designs, an architecture that enables MuT on chatbots built using heterogeneous technologies, and a practical realisation as an Eclipse plugin. Moreover, we evaluate the applicability, effectiveness and efficiency of our approach on open-source chatbots, with promising results.
Must Know Postgres Extension for DBA and Developer during MigrationMydbops
Mydbops Opensource Database Meetup 16
Topic: Must-Know PostgreSQL Extensions for Developers and DBAs During Migration
Speaker: Deepak Mahto, Founder of DataCloudGaze Consulting
Date & Time: 8th June | 10 AM - 1 PM IST
Venue: Bangalore International Centre, Bangalore
Abstract: Discover how PostgreSQL extensions can be your secret weapon! This talk explores how key extensions enhance database capabilities and streamline the migration process for users moving from other relational databases like Oracle.
Key Takeaways:
* Learn about crucial extensions like oracle_fdw, pgtt, and pg_audit that ease migration complexities.
* Gain valuable strategies for implementing these extensions in PostgreSQL to achieve license freedom.
* Discover how these key extensions can empower both developers and DBAs during the migration process.
* Don't miss this chance to gain practical knowledge from an industry expert and stay updated on the latest open-source database trends.
Mydbops Managed Services specializes in taking the pain out of database management while optimizing performance. Since 2015, we have been providing top-notch support and assistance for the top three open-source databases: MySQL, MongoDB, and PostgreSQL.
Our team offers a wide range of services, including assistance, support, consulting, 24/7 operations, and expertise in all relevant technologies. We help organizations improve their database's performance, scalability, efficiency, and availability.
Contact us: info@mydbops.com
Visit: https://www.mydbops.com/
Follow us on LinkedIn: https://in.linkedin.com/company/mydbops
For more details and updates, please follow up the below links.
Meetup Page : https://www.meetup.com/mydbops-databa...
Twitter: https://twitter.com/mydbopsofficial
Blogs: https://www.mydbops.com/blog/
Facebook(Meta): https://www.facebook.com/mydbops/
ScyllaDB is making a major architecture shift. We’re moving from vNode replication to tablets – fragments of tables that are distributed independently, enabling dynamic data distribution and extreme elasticity. In this keynote, ScyllaDB co-founder and CTO Avi Kivity explains the reason for this shift, provides a look at the implementation and roadmap, and shares how this shift benefits ScyllaDB users.
QA or the Highway - Component Testing: Bridging the gap between frontend appl...zjhamm304
These are the slides for the presentation, "Component Testing: Bridging the gap between frontend applications" that was presented at QA or the Highway 2024 in Columbus, OH by Zachary Hamm.
"$10 thousand per minute of downtime: architecture, queues, streaming and fin...Fwdays
Direct losses from downtime in 1 minute = $5-$10 thousand dollars. Reputation is priceless.
As part of the talk, we will consider the architectural strategies necessary for the development of highly loaded fintech solutions. We will focus on using queues and streaming to efficiently work and manage large amounts of data in real-time and to minimize latency.
We will focus special attention on the architectural patterns used in the design of the fintech system, microservices and event-driven architecture, which ensure scalability, fault tolerance, and consistency of the entire system.
Northern Engraving | Modern Metal Trim, Nameplates and Appliance PanelsNorthern Engraving
What began over 115 years ago as a supplier of precision gauges to the automotive industry has evolved into being an industry leader in the manufacture of product branding, automotive cockpit trim and decorative appliance trim. Value-added services include in-house Design, Engineering, Program Management, Test Lab and Tool Shops.
5. Geometrical concentration ratio ‘C’ for tubular receive
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The function of the rim angle is expressed as the ratio of the aperture width to the focal length
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Table 1: Specifications of PTC
FABRICATION OF PTC
The PTC parts has constructed according to given below process and descriptions.
1-Frame structure for PTC system holding and support
For holding and support the receiver and reflector a frame structure of made by mild steel
Iron has assembled with use of arc welding, drilling and nut-bolt joint. The reflector support frame
portion was adjustable to horizontal axis for automatic or manual sun tracking. The single Sun
tracking and double Sun tracking structure is designs according structure frame manner.