Geotechnical Evaluation of Traditional ‘Bunds’ - Earthen Levees - From Goa

2018 ◽  
Vol 877 ◽  
pp. 230-240
Author(s):  
Leonardo Roque do Carmo Souza ◽  
Sumitra S. Kandolkar

Ancient Goa was reclaimed from the marshy deltas by remnants of the Saraswat Civilization who settled there and brought with them their ancient technology. We need to learn from these ancient structures that have survived nearly 8000 years and therefore are truly sustainable. Their construction method needs to be replicated to help India’s growing infrastructure demand and lowland reclamation. They use renewable, locally available materials like Soil, Lime, Ash, Cowdung and Straw. They are multi functional: habitation, irrigation, pisiculture, agriculture, rainwater harvesting, infrastructure etc. they possess a stable shape. They save at an average 80% more space than standard embankments. A 6-8% mix of Lime and Coconut Leaf Ash gave best results for soil stabilization. They have good slope stability with a factor of safety of more than 1.5. They have no seepage problems. The self-repairing sustainable coconut tree root system provided 20% more shear strength and seismic stability. As they have already existed for many years they are already undergone settlement and consolidation. This is green engineering that has scope for ancient technology aiding modern technology and spurring India’s growth in it race for international primacy as a technological superpower.

2020 ◽  
Vol V (III) ◽  
pp. 237-245
Author(s):  
Faisal Khan ◽  
Junaid Babar ◽  
Zahir Hussain

The paper deals with the architecture and function of watermills in Swat valley. Watermill is a seldom-used term; however, it has played a significant role in the socio-cultural and economic lives of people in the past. This research work explores the case study of water mills in the Swat region. It examined in detail its processing and operation. The watermill was not only an instrument used for grinding purposes but also determined the mode of production, class system and social values of people. Modern technology has though changed people's behaviors and social formations up to a large extent, but it couldn't erase people's memories and history. A qualitative method has been used for conducting this research work. An ethnic-archaeological method was focused on recording the history of this tremendous ancient technology which contributed widely to the socio-cultural context of people.


Author(s):  
Raju Acharya ◽  
Aravind Pedarla ◽  
Tejo V. Bheemasetti ◽  
Anand J. Puppala

Expansive soil embankments are prone to shallow slope failures caused by associated swell–shrink movements. Previous studies have confirmed that seasonal changes and corresponding volumetric changes are responsible for desiccation cracking, which is a major factor behind shallow slope failures of highway embankments. For the past few years, soil stabilization proved to be an effective way to mitigate the swell–shrink property of expansive clays. The current study addresses the feasibility of guar gum biopolymer in mitigating the swell–shrink behavior of clays and in turn making it possible to adopt them as stable geomaterials. The sustainable benefits of biopolymers far exceed the environmental benefits from conventional stabilizers that contractors typically use. This paper presents a comprehensive laboratory study, followed by finite difference modeling analysis, on biopolymeric guar gum–remediated expansive soils collected from shallow slope failure-prone areas. For this study, two dam locations, at Grapevine Lake and Joe Pool Lake, Texas, that were originally constructed with expansive soils, were considered. The engineering performance of biopolymer-treated soils was evaluated and an optimum dosage was recommended for mitigating desiccation cracking at the test sites. Slope stability analyses were conducted using Fast Lagrangian Analysis of Continua in Three Dimensions software by adopting laboratory-determined strength parameters to determine the range of the factor of safety for the slopes. The variation of the factor of safety computed with the inclusion of enhanced engineering parameters from guar gum treatments revealed the advantages of adopting this treatment.


Author(s):  
Kuswandi Arifin ◽  
Suherna Suherna ◽  
Alapson Samosir

Great potentiality of coconut cannot be separated from the method of coconut harvest which still draw a lot of problems in. Until now, coconut farmers still use climber service in coconut harvesting. The process of coconut tree climbing is usually done without tools. This is very risky for the harvesters. Since the utilization of animal service (monkeys) have already prohibited from commercial activities, human service in coconut tree climbing becomes the alternative for the farmers. For this reason, the aim of this study is to design a tool for coconut tree climbing that will help coconut harvesters in Lombok Sangatta Bay, East Kutai, by considering climber's characteristics. Furthermore, the tool is made in form of design, which then being simulated to determine the tools’ safety level, stress level and the ability which is designed by using SolidWorks 2018 software.The result for the proposed design of coconut tree climbing tool for coconut harvester in Lombok Sangatta Bay, East Kutai, is to use 20 mm x 20 mm x 2 mm of hollow profile with AISI 1020 material built, which is declared safe for 80 kg capacity. The highest score of stress is 223.04 Mpa on body holder, 4.68 mm deflection, 1.6 in factor of safety, and 17.08 kg for tool's overall weight


In this new era, modernization plays a key role. Many human tasks are now being replaced with innovations and robots. There is an urge to handle modern technology. Only a few are interested in climbing trees due to many disparities faced by hikers but demand high pay. This results in a tremendous demand for tree climbing manpower. There are different approaches available for the climbing of coconut trees, however, they require people to accompany the mechanical structure. The idea of a smart remote-controlled tree climbing mechanism is proposed to make the climbing process easier and convenient. Coconut tree climber is a machine used without human effort to climb coconut trees and harvest coconut. It consists of a hexagonal frame holding all the devices inside it and by adjusting the driver circuit, the complete structure can be driven up and down. This mechanical frame set-up is made of lightweight material. Gear motors are powered by the driver circuit wherein the battery supplies. The treewidth usually differs between 45 cm and 55 cm. By considering the tree structure the frame size is designed accordingly. Since width changes between trees, the mechanical frame is constructed with various diameters using spring mechanism. Grip wheels are used to produce friction. Gear motors are used which produces small quantity of regeneration. The battery can store this energy and reuse it. The Robotic arm is placed on the mechanical frame to pick the coconut without any crew from the tree. The machine's cost is about ₹ 20k. This automated remotecontrolled coconut climber is supposed to be very obligatory for farmers.


2000 ◽  
Vol 65 (4) ◽  
pp. 646-668 ◽  
Author(s):  
Helen L. Loney

The use of evolution as either analogy or theory in ceramic change artificially imposes a view of technology that is directed. The use of progress has led to a tendency to equate technological change with technological improvement, as if change were unidirectional. This improvement is usually measured by modern standards of industrialization, such as increasing standardization, increasing speed of production, increasing quantity of production, and the overall increasing formality of the workshop. Within models that employ an evolutionary paradigm there is the implicit notion that: a) technology change, when it occurs, only occurs towards improvement; b) improvement occurs toward the most logical, efficient solution to a technological problem; and c) such a solution is rooted in fundamental scientific "truths" or "facts," which scientists or technicians "discover." Over the past twenty years, social scientists studying the development of modern technology and society have questioned the usefulness of evolution as a model for change. A critical appraisal of technologically determinist history of scientific discovery has found that important discoveries are frequently credited with fundamentally changing the course of history. The evidence of modern history and ethnography, however, shows that cultural values and embedded beliefs may be more powerful in selecting and directing developing technologies than any external factors. European archaeologists van der Leeuw, Petréquin, and Loney, among others, are now applying the findings of the techno-sociologists to the development of ancient pottery production. Their perspective on ancient technology takes into account personal choice as well as ecological resources and economic organization. The approach of European archaeologists permits the investigation of the varied trajectories of ancient ceramic technology without resorting to self-perpetuating, internally self-generating models of biological evolution.


1985 ◽  
Vol 4 (9) ◽  
pp. 1696-1696
Author(s):  
Harry Meinema

VASA ◽  
2015 ◽  
Vol 44 (2) ◽  
pp. 85-91
Author(s):  
Erich Minar

The generally accepted first-line treatment in patients with intermittent claudication is risk factor modification, medical treatment and exercise training. In an era of reduced resources, the benefit of any further invasive intervention must be weighted against best conservative therapy for patients with claudication. According to some recent trials an integrative therapeutic concept combining best conservative treatment - including (supervised) exercise therapy - with endovascular therapy gives the best midterm results concerning walking distance and health-related quality of life. The improved mid- and long-term patency rate with use of modern technology further supports this concept. The conservative and interventional treatment strategy are more complimentary than competitive. The current main challenge is to overcome the economic barriers concerning the availability of exercise programmes.


1969 ◽  
Vol 08 (03) ◽  
pp. 120-127 ◽  
Author(s):  
P. R. Amlinger

Routine transmission of electrocardiograms and their computer interpretation via long-distance telephone lines has been proven feasible in the Automated Electrocardiogram Project of the Missouri Regional Medical Program. Though this Pilot Project — the first on a state-wide basis — is still viewed as an applied research effort rather than a service, such biotelemetry is rapidly gaining acceptance as a medium to bring modern medicine, through modern technology, to urban and remote rural areas as well, where it is most needed.The computer executes all the wave measuraments and calculations with incredible speed. It takes over a most boring, repetitive part of the physician’s work. However, it can only follow the instructions of the diagnostic program, compiled by expert cardiologists. Thus, it is an ever-ready, never-tiring servant for the physician and his patients.


2018 ◽  
Vol 1 (2) ◽  
pp. 17-23
Author(s):  
Takialddin Al Smadi

This survey outlines the use of computer vision in Image and video processing in multidisciplinary applications; either in academia or industry, which are active in this field.The scope of this paper covers the theoretical and practical aspects in image and video processing in addition of computer vision, from essential research to evolution of application.In this paper a various subjects of image processing and computer vision will be demonstrated ,these subjects are spanned from the evolution of mobile augmented reality (MAR) applications, to augmented reality under 3D modeling and real time depth imaging, video processing algorithms will be discussed to get higher depth video compression, beside that in the field of mobile platform an automatic computer vision system for citrus fruit has been implemented ,where the Bayesian classification with Boundary Growing to detect the text in the video scene. Also the paper illustrates the usability of the handed interactive method to the portable projector based on augmented reality.   © 2018 JASET, International Scholars and Researchers Association


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