Problem statement: Chip shape and size varied widely in machining operations. Undesirable chip formation had a detrimental effect on surface finish, work-piece accuracy, chatter and tool life. Approach: This study included the findings of an experimental study on the instabilities of the chip formation and development of a mathematical model based
The intent of this paper is to review some timestampbased password authentication schemes using smart cards which have similar working principles. Many of the proposed timestampbased password authentication schemes were subsequently found to be insecure. Here, we investigate three schemes with similar working principles, show that they are vulnerab
A new technique was developed for the investigation of chatter formation considering the instability of the closed-loop system formed by machine tool structure and metal-cutting process. Machine tool structure indicates the importance of different system components and it’s dominating mode frequencies whereas the metal cutting process indicates t
Wireless Sensor Network (WSN), composed of a huge number of resource-constrained sensors can be used for a large number of securitysensitive applications. Regardless of the type of application, smooth collection and delivery of data from this type of network is one of the critical requirements. If the data supply process is hampered and thus the ex
Because of increasing anthropogenic outputs, lead (Pb) has gained attention as a potent environmental health hazard. Pb, a non-essential element, is persistent and cannot be degraded from the environment. This heavy metal contaminant is likely to enter human’s food chain, where it poses a hazard to public health. Phytoremediation has emerged as a
WSN Security Issues presentedSmartening the Environment using Wireless Sensor Networks in a Developing Country Presented By Al-Sakib Khan Pathan Department of Computer Science and Engineering BRAC University, Bangladesh Introduction to Wireless Sensor Network Secu rity Wireless Sensor Network •Wireless networks consisting of a large number of mot
Sekarang teknologi pelayaran telah maju dengan sangat pesat. Hal ini ditandai dengan kian banyaknya system komputer berkinerja tinggi yang semakin kompak disertai sistem komunikasi yang saling terkoneksi untuk mendukung sistem radar dan satelit yang terpadu. Dengan dukungan teknologi yang telah ada, sebuah system navigasi dapat dibangun untuk menun
A study on physico-chemical parameters and pathogenic bacterial community was carried out at the coastal waters of Pulau Tuba island, Langkawi. The physico-chemical parameters such as temperature (27.43-28.88 degrees C), dissolved oxygen (3.79-6.49 mg l(-1)), pH (7.72-8.20), salinity (33.10-33.96 ppt), total dissolved solids (32.27-32.77 g l(-1)) a
