Studies on the Commercially Important Fishing Gears of Vembanad Lake

Department of Industrial Fisheries, Cochin University of Science and Technology

Studies on the technological aspects and economic efficiency of trawl gear operating along the Cochin coast

Trawling, despite being heavily energy expensive, still continues to be the most energy expensive fishing method particularly so in View of the export oriented nature of the Indian seafood industry. This study therefore aims at analyzing the efficiency of trawls operation from Cochin, an important fishing center along the southwest coast of India. The analysis is made along two perspectives - economic and technological. Even though technological efficiency complement economic efficiency, in the fishing parlance, parameters like the size composition of the catch, selectivity factors, etc., will have a direct bearing on the technological qualities of the trawl, and which parameters will have a significant impact on the effective exploitation of a fishery stock. Whereas the technological analysis aims at improving the efficiency with regard to the effective utilization of fuel and fishery stocks, economic analysis ascertains the present status of the trawling operations from the commercial angle.

Numerical Simulation of Two-Part Underwater Towing System

The motion instability is an important issue that occurs during the operation of towed underwater vehicles (TUV), which considerably affects the accuracy of high precision acoustic instrumentations housed inside the same. Out of the various parameters responsible for this, the disturbances from the tow-ship are the most significant one. The present study focus on the motion dynamics of an underwater towing system with ship induced disturbances as the input. The study focus on an innovative system called two-part towing. The methodology involves numerical modeling of the tow system, which consists of modeling of the tow-cables and vehicles formulation. Previous study in this direction used a segmental approach for the modeling of the cable. Even though, the model was successful in predicting the heave response of the tow-body, instabilities were observed in the numerical solution. The present study devises a simple approach called lumped mass spring model (LMSM) for the cable formulation. In this work, the traditional LMSM has been modified in two ways. First, by implementing advanced time integration procedures and secondly, use of a modified beam model which uses only translational degrees of freedoms for solving beam equation. A number of time integration procedures, such as Euler, Houbolt, Newmark and HHT-α were implemented in the traditional LMSM and the strength and weakness of each scheme were numerically estimated. In most of the previous studies, hydrodynamic forces acting on the tow-system such as drag and lift etc. are approximated as analytical expression of velocities. This approach restricts these models to use simple cylindrical shaped towed bodies and may not be applicable modern tow systems which are diversed in shape and complexity. Hence, this particular study, hydrodynamic parameters such as drag and lift of the tow-system are estimated using CFD techniques. To achieve this, a RANS based CFD code has been developed. Further, a new convection interpolation scheme for CFD simulation, called BNCUS, which is blend of cell based and node based formulation, was proposed in the study and numerically tested. To account for the fact that simulation takes considerable time in solving fluid dynamic equations, a dedicated parallel computing setup has been developed. Two types of computational parallelisms are explored in the current study, viz; the model for shared memory processors and distributed memory processors. In the present study, shared memory model was used for structural dynamic analysis of towing system, distributed memory one was devised in solving fluid dynamic equations.

Variations of surface boundary layer parameters associated with Cyclone Gonu over the Arabian Sea using QuikSCAT data

This study attempted to quantify the variations of the surface marine atmospheric boundary layer (MABL) parameters associated with the tropical Cyclone Gonu formed over the Arabian Sea during 30 May–7 June 2007 (just after the monsoon onset). These characteristics were evaluated in terms of surface wind, drag coefficient, wind stress, horizontal divergence, and frictional velocity using 0.5◦ × 0.5◦ resolution Quick Scatterometer (QuikSCAT) wind products. The variation of these different surface boundary layer parameters was studied for three defined cyclone life stages: prior to the formation, during, and after the cyclone passage. Drastic variations of the MABL parameters during the passage of the cyclone were observed. The wind strength increased from 12 to 22 m s−1 in association with different stages of Gonu. Frictional velocity increased from a value of 0.1–0.6 m s−1 during the formative stage of the system to a high value of 0.3–1.4 m s−1 during the mature stage. Drag coefficient varied from 1.5 × 10−3 to 2.5 × 10−3 during the occurrence of Gonu. Wind stress values varied from 0.4 to 1.1 N m−2. Wind stress curl values varied from 10 × 10−7 to 45 × 10−7 N m−3. Generally, convergent winds prevailed with the numerical value of divergence varying from 0 to –4 × 10−5 s−1. Maximum variations of the wind parameters were found in the wall cloud region of the cyclone. The parameters returned to normally observed values in 1–3 days after the cyclone passage

Characteristic Study of the Boundary Layer Parameters over the Arabian Sea and the Bay of Bengal Using the QuikSCAT Dataset

The marine atmospheric boundary layer (MABL) plays a vital role in the transport of momentum and heat from the surface of the ocean into the atmosphere. A detailed study on the MABL characteristics was carried out using high-resolution surface-wind data as measured by the QuikSCAT (Quick scatterometer) satellite. Spatial variations in the surface wind, frictional velocity, roughness parameter and drag coe±cient for the di®erent seasons were studied. The surface wind was strong during the southwest monsoon season due to the modulation induced by the Low Level Jetstream. The drag coe±cient was larger during this season, due to the strong winds and was lower during the winter months. The spatial variations in the frictional velocity over the seas was small during the post-monsoon season (»0.2 m s¡1). The maximum spatial variation in the frictional velocity was found over the south Arabian Sea (0.3 to 0.5 m s¡1) during the southwest monsoon period, followed by the pre-monsoon over the Bay of Bengal (0.1 to 0.25 m s¡1). The mean wind-stress curl during the winter was positive over the equatorial region, with a maximum value of 1.5£10¡7 N m¡3, but on either side of the equatorial belt, a negative wind-stress curl dominated. The area average of the frictional velocity and drag coe±cient over the Arabian Sea and Bay of Bengal were also studied. The values of frictional velocity shows a variability that is similar to the intraseasonal oscillation (ISO) and this was con¯rmed via wavelet analysis. In the case of the drag coe±cient, the prominent oscillations were ISO and quasi-biweekly mode (QBM). The interrelationship between the drag coe±cient and the frictional velocity with wind speed in both the Arabian Sea and the Bay of Bengal was also studied.

Screen capture on the Mac

You can capture an image of your entire screen by typing Command-Shift-3. Typing Command-Shift-4 lets you choose a specific part of your screen. Region capture - you can change how the region selection area changes by using the following keys - note that you can release the original keys once the crosshairs appears, as long as you’ve started dragging your mouse, and you keep the mouse button down. • Space Bar: Press and hold the Space Bar, and the size of the current region is then locked and can be dragged around the screen. As long as you hold the Space Bar down, the region’s size is locked and it can be dragged about. • Shift: Press and hold the Shift key, and one side of the region will be locked, based on which way you then move the mouse. For instance, if you press and hold Shift, and then move your mouse down, you’ll only be able to resize the region vertically; the horizontal size will be fixed. Move the mouse left or right, and you can resize the region horizontally while holding the vertical size fixed. • Option: Press and hold Option while dragging your region, and you’ll change the way the region grows as you drag. By default, your region is anchored at the upper left corner; when you press Option, the anchor point is moved to the center of the current region, and it expands in all directions from that point. For more tips check the links!

Interactive report writing from Edinburgh Napier University

Short general guide to report writing with drag and drop activities and sequenced (multiple choice) questions

Workshop 1 p6 The practice facilitator role description

Drag and drop animation

Din??mica de rincones y talleres

Dise??o de un modelo global de Educaci??n Infantil, a trav??s de los centros de inter??s, cuyo objetivo es el establecimiento de unos objetivos, estructuras y formas de actuaci??n que respondan de manera coherente y global a las necesidades educativas de los ni??os hasta los seis a??os. Dirigido a 97 alumnos de Preescolar (4 y 5 a??os). El equipo de trabajo ha utilizado la observaci??n directa de los alumnos a lo largo del curso escolar. La experiencia se valora positivamente. La din??mica de rincones y talleres llevada a cabo resulta id??nea para la muestra utilizada. El m??todo global parece ser la forma natural de aprendizaje y dem??s experiencias. Dificultades a??adidas merman los resultados deseados sin que la experiencia deje de ser un ??xito y pueda llevarse a cabo. Se solicita pr??rroga.

Perfil logístico de colombia sector automotriz

Mediante este proyecto se caracteriza la situación actual del sector automotriz en Colombia a través de las oportunidades y amenazas que presenta hoy en día el sector a partir de la situación económica mundial y la importancia del sector automotriz para el mundo y otros sectores de la economía dadas sus condiciones de arrastre debido al impacto de la globalización y la celebración de nuevos tratados de libre comercia para el país. Se identifica la importancia del sector debido a su relación directa por el crecimiento de número de vehículos vendidos con el crecimiento del PIB de la economía y su importancia como soporte para el crecimiento de otros sectores de la economía y por ende la importancia de conocer la caracterización de la industria que permita identificar factores de hacinamiento y definir estrategias que permitan aumentar la perdurabilidad a través de la diferenciación. Por lo anterior es necesario caracterizar el sector en cuanto a los canales utilizados, niveles de innovación, el alto nivel de importaciones y nuevos actores en el mercado debido a su alto nivel de competitividad que permita identificar donde podrían las empresas colombianas innovar permitiéndoles mitigar el hacinamiento y aumentar su competitividad en el mercado.

La influencia de la construcción de identidad cultural vietnamita en la guerra de independencia de Vietnam (1946-1954)

La presente investigación tiene como objetivo explicar la influencia de la construcción de identidad cultural vietnamita en la Guerra de Independencia de Vietnam entre 1946 y 1954. Se argumenta que la construcción de identidad cultural justificó, promovió y legitimó la guerra de independencia como instrumento político ya que –en tanto proceso relacional– generó durante la colonización francesa prácticas de diferenciación fundamentadas en la reivindicación de los valores, tradiciones, costumbres, creencias y símbolos vietnamitas en torno a la resistencia. Ello propició una ruptura en las relaciones políticas imperantes, lo que condujo a la búsqueda de un nuevo orden social basado en la autodeterminación. Se utiliza una metodología de tipo cualitativa, fundamentada en el análisis documental e historiográfico.

Inform??tica y educaci??n especial. Una v??a tecnol??gica para la integraci??n escolar

Sugerir modificaciones que aplicadas a los actuales modelos de ordenadores personales, permitan que estos sean usados por personas con discapacidades f??sicas. Analizar las aplicaciones actuales y futuras de la inform??tica en el campo de la educaci??n especial. . El objeto de estudio son los procedimientos de acceso de personas con discapacidades a la inform??tica, as?? como la aplicaci??n de ??sta en los procesos de ense??anza-aprendizaje en el contexto de la educaci??n especial. Se estudian tambi??n cuatro casos de centros en los que se aplican herramientas inform??ticas para la integraci??n y ense??anza de personas con discapacidades f??sicas, sensoriales o ps??quicas.. La investigaci??n se articula en dos bloques, en el primero de ellos se estudia la aplicaci??n de la inform??tica en la educaci??n especial analizando los diversos procedimientos de acceso a las herramientas inform??ticas para alumnos con handicap f??sico, visual, auditivo e intelectual. Se revisan los diferentes usos que de la inform??tica se hace en el contexto de la educaci??n especial; administraci??n asistida por ordenador, ense??anza controlada/dirigida por ordenador, haci??ndose especial incapi?? en la ense??anza asistida por ordenador. Se revisa tambi??n el software educativo existente y se evaluan las posibilidades de aplicaci??n de los sistemas expertos y de los lenguajes Logo y Basic. El segundo bloque de la investigaci??n analiza algunos proyectos relevantes de aplicaci??n inform??tica en educaci??n especial: el centro de formaci??n profesional-ocupacional y de recursos para grandes disminuidos f??sicos 'Pont del Drag??', el centro de recursos 'Joan Amades', el centro 'Fonoaudiol??gico' y la escuela 'Xamfr??'. . El acceso a las herramientas inform??tias de personas con disminuciones facilita el proceso educativo y la autonom??a personal al permitir mejorar el control del entorno y el acceso a la informaci??n escrita. El uso del ordenador en la educaci??n especial supone un progreso social en cuanto a que contribuye al tratamiento diferenciado de las minor??as. Los avances tecnol??gicos permiten que casi cualquier alumno con discapacidades acceda a la herramienta inform??tica. La aplicaci??n de la inform??tica en la educaci??n especial debe ir acompa??ada de una investigaci??n te??rica que fundamente y corrija la pr??ctica. Se sugieren como l??neas de investigaci??n posteriores el uso del ordenador para estimular la integraci??n social de los alumnos discapacitados y el estudio de los efectos en el desarrollo de habilidades cognitivas del uso del ordenador..

Un centro de Educación Especial a favor de la inclusión.

Resumen tomado de la publicación

Los Dragones, esos fabulosos personajes

Recorrido por la literatura infantil y juvenil protagonizada por dragones. Empieza con Zu, el primer drag??n del que hay constancia hasta llegar a la narrativa actual, sin olvidarse de hacer menci??n de los dragones audiovisuales que los chicos ven en la televisi??n.

Biblioteca de libros fant??sticos

Se trata de un libro ilustrado, con un breve texto que apoya la historia ficticia e imaginativa de cada libro que ilustra. A trav??s de manualidades, se han transformado los libros que se muestran para convertirlos en drag??n, playa, castillo, y otros elementos fant??sticos. Por ejemplo, el libro que cuenta historias de mar, se convierte en barco. Se ilustra con fotograf??as de estas manualidades. Se muestra al libro como material de diversi??n, y pretende transmitir la vida que contiene cada uno, c??mo ??sta se exterioriza tomando diversas formas.