Finite Element Simulation ForThermal Analysis In Laser Forming Of D36 Ship Building Steel

The laser bending process is one of the advanced bending processes which can be achieved by elasto-plastic deformation through the local introduction of thermal stresses. It is a thermo-mechanical process in which a laser heat source of suitable power is used for bending the material rather than any external force. In this work, sequential thermal analysis is carried out for SOLID70 element by using ANSYS. The deformation of a sheet, subjected to an irradiation, has been studied through a sequentially coupled thermo-mechanical elasto-plastic simulation by using the finite element model (FEM). D36 shipbuilding steel sheet has been taken as the work-piece material for the analysis. The thermal effects due to heat input into the work piece are analyzed which includes temperature distribution, thermal flux distribution, thermal gradient distribution and variation of thermal properties with time.Keywords: Laser beam forming, Gaussian distribution, FEM

Social media and protest mobilization: evidence from the Tunisian revolution

This article explores how social media acted as a catalyst for protest mobilization during the Tunisian revolution in late 2010 and early 2011. Using evidence from protests we argue that social media acted as an important resource for popular mobilization against the Ben Ali regime. Drawing on insights from “resource mobilization theory”, we show that social media (1) allowed a “digital elite” to break the national media blackout through brokering information for mainstream media; (2) provided a basis for intergroup collaboration for a large “cycle of protest”; (3) reported event magnitudes that raised the perception of success for potential free riders, and (4) provided additional “emotional mobilization” through depicting the worst atrocities associated with the regime’s response to the protests. These findings are based on background talks with Tunisian bloggers and digital activists and a revealed preference survey conducted among a sample of Tunisian internet users (February–May 2012)

MEDICINAL FORMULATIONS OF A KANDA TRIBAL HEALER – A TRIBE ON THE VERGE OF DISAPPEARANCE IN BANGLADESH

The Kanda tribe is one of the lesser known small tribes of Bangladesh with an estimated population of about 1700 people (according to them), and on the verge of extinction as a separate entity. To some extent, they have assimilated with the surrounding mainstream Bengali-speaking population, but they still maintain their cultural practices including traditional medicinal practices, for which they have their own tribal healers. Nothing at all has been documented thus far about their traditional medicinal practices and formulations, which are on the verge of disappearance. The Kanda tribe can be found only in scattered tea gardens of Sreemangal in Sylhet district of Bangladesh; dispersion of the tribe into small separated communities is also contributing to the fast losing of traditional medicinal practices. The objective of the present study was to conduct an ethnomedicinal survey among the traditional healers of the Kanda tribe (in fact, only one such healer was found after extensive searches). Information was collected from the healer with the help of a semi-structured questionnaire and the guided field-walk method. A total of 24 formulations were obtained from the healer containing 34 plants including two plants, which could not be identified. Besides medicinal plants, the Kanda healer also used the body hairs of the Asiatic black bear (Ursus thibetanus) and bats (Pteropus giganteus giganteus) in one of his formulation for treatment of fever with shivering. The ailments treated by the Kanda healer were fairly common ailments like cuts and wounds, skin diseases, helminthiasis, fever, respiratory problems (coughs, asthma), gastrointestinal disorders (stomach pain, constipation, diarrhea), burning sensations during urination, various types of pain (headache, body ache, toothache, ear ache), conjunctivitis, poisonous snake, insect or reptile bites, jaundice, and bone fractures. A number of important drugs in allopathic medicine like quinine, artemisinin, and morphine (to name only a few) have been discovered from observing indigenous medicinal practices. From that view point, the formulations used by the Kanda healer merit scientific studies for their potential in the discovery of cheap and effective new drugs. Scientific validation of the medicinal formulations of the Kanda healer can also be effective for treatment of ailments among this tribe, which does not have or does not want to have any contact with modern medicine

The role of the Internet in Burma's saffron revolution

The 2007 Saffron Revolution in Burma was in many ways an unprecedented event in the intersection between politics and technology. There is, of course, the obvious: the event marks a rare instance in which a government leveraged control of nationalized ISPs to entirely black out Internet access to prevent images and information about the protests from reaching the outside world. At another level, it is an example of an Internet driven protest which did not lead to tangible political change. On deeper reflection it is also of interest because of the complex interaction between eyewitnesses within the country and a networked public sphere of bloggers, student activists, and governments around the globe. To that end, this case study examines the root causes, progress, and outcomes of the Saffron Revolution and attempts to parse out the extent to which technology may have played a useful or detrimental role in the unfolding of events. The case concludes with some initial hypotheses about the long-term impact of the protests and the role of the Internet in highly authoritarian states

Mridul Chowdhury Konok's Quick Files

The Quick Files feature was discontinued and it’s files were migrated into this Project on March 11, 2022. The file URL’s will still resolve properly, and the Quick Files logs are available in the Project’s Recent Activity

Design of an Inclusive School: Accessible for the physically challenged children

The Paper was presented in the International Conference on Inclusive Education, Dhaka, in 2013. The Researcher outlined the blue print of an Inclusive School that is accessible to all students regardless of their physical barriers. The school design was contemplated by the Researcher in the context of a developing country, which indicates that it is possible to build this school with all the described facilities with a small budget. Thus, making the school a cost saving one

Mridul Chowdhury Konok's Quick Files

The Quick Files feature was discontinued and it’s files were migrated into this Project on March 11, 2022. The file URL’s will still resolve properly, and the Quick Files logs are available in the Project’s Recent Activity

Design of an Inclusive School: Accessible for the physically challenged children

The Paper was presented in the International Conference on Inclusive Education, Dhaka, in 2013. The Researcher outlined the blue print of an Inclusive School that is accessible to all students regardless of their physical barriers. The school design was contemplated by the Researcher in the context of a developing country, which indicates that it is possible to build this school with all the described facilities with a small budget. Thus, making the school a cost saving one.</p