645 research outputs found

    Synthesis, characterization, and phase relations of Zinc-Rich phases in the binary systems Platinum-Zinc and Nickel-Zinc

    Get PDF
    Synthesis, characterization, and phase relations of Zinc-Rich phases in the binary systems Platinum-Zinc and Nickel-Zinc

    An Experimental Study on the Influence that Failure Number, Specialization, and Domain have on Confidence in Predicting System Failures

    Get PDF
    Design reviews are typically used for three types of design activities: 1) identifying errors, 2) assessing the impact of the errors, and 3) suggesting solutions for the errors. This experimental study focuses on understanding the second issue as it relates to the number of errors considered, the existence of controls, and the level of domain familiarity of the assessor. A set of design failures and associated controls developed for a completed industry sponsored project is used as the experimental design problem. Non-domain individuals (psychology class students), domain generalists (first year engineering students), and domain specialists (graduate mechanical students) are provided a set of failure modes and asked to estimate the likelihood that the system would still successfully achieve the stated objectives. Primary results from the study include the following: the confidence level for all domain population decreased significantly as the number of design errors increased (largest p-value=0.0793) and this decrease in confidence is more significant as the design errors increase. The impact on confidence is less when solutions (controls) are provided to prevent the errors (largest p-value=0.0334), the confidence decreased faster for domain general engineers as compared to domain specialists (p= The research presents a study on how estimations are made in design reviews. It answers the question on how individuals assess the performance of systems which is necessary to be addressed in order to evaluate the importance of methods such as design reviews and design review tools (FMEA, DFMEA, FTA) used in design engineering. It addresses the challenges faced by the impact of design errors in the design process and how they affect assessment by different types of designers in predicting successful system performance

    Zero- cost Organic Certification System: A Beginning

    Get PDF
    Organic Certification systems have been a boon and a bane for the organic agriculture movement. The stringent organic standards and certification system has mainstreamed traceability and promoted food safety to a large extent. However the inspection and certification process have become too cumbersome and very expensive for the poor farmers. These additional costs are charged on the consumer which makes organic produce even more expensive and unaffordable. Instead of considering organic products as niche commodities there is a need to rethink organic agriculture as a system that provides innumerable environmental services through good health of soil, water and safe food. Conserving the soil, water, natural resources and environment should be the responsibility of the respective governments and appropriate mechanisms should be developed for its facilitation. A unique certification system for organic produce has been developed by Bhutan Agriculture and Food regulatory Authority (BAFRA) under the Ministry of Agriculture and Forests to support the organic farmers, custodians of environment. This zero-cost certification system was launched as Bhutan Organic Certification System (BOCS) which will be implemented in Bhutan to support and empower the small holder farmers

    A STUDY ON THE FEASIBILITY OF UNIVERSAL CHIP CONTROL IN MACHINING

    Get PDF
    A novel solution to the long standing issue of chip entanglement and breakage in metal cutting is presented in this dissertation. Through this work, an attempt is made to achieve universal chip control in machining by using chip guidance and subsequent breakage by backward bending (tensile loading of the chip\u27s rough top surface) to effectively control long continuous chips into small segments. One big limitation of using chip breaker geometries in disposable carbide inserts is that the application range is limited to a narrow band depending on cutting conditions. Even within a recommended operating range, chip breakers do not function effectively as designed due to the inherent variations of the cutting process. Moreover, for a particular process, matching the chip breaker geometry with the right cutting conditions to achieve effective chip control is a very iterative process. The existence of a large variety of proprietary chip breaker designs further exacerbates the problem of easily implementing a robust and comprehensive chip control technique. To address the need for a robust and universal chip control technique, a new method is proposed in this work. By using a single tool top form geometry coupled with a tooling system for inducing chip breaking by backward bending, the proposed method achieves comprehensive chip control over a wide range of cutting conditions. A geometry based model is developed to predict a variable edge inclination angle that guides the chip flow to a predetermined target location. Chip kinematics for the new tool geometry is examined via photographic evidence from experimental cutting trials. Both qualitative and quantitative methods are used to characterize the chip kinematics. Results from the chip characterization studies indicate that the chip flow and final form show a remarkable consistency across multiple levels of workpiece and tool configurations as well as cutting conditions. A new tooling system is then designed to comprehensively break the chip by backward bending. Test results with the new tooling system prove that by utilizing the chip guidance and backward bending mechanism, long continuous chips can be more consistently broken into smaller segments that are generally deemed acceptable or good chips. It is found that the proposed tool can be applied effectively over a wider range of cutting conditions than present chip breakers thus taking possibly the first step towards achieving universal chip control in machining

    Impact of information and communication technology on agricultural sector in Karnataka: a case study of Hassan district

    Get PDF
    Agriculture sector is considered to be the most predominant sector of Indian economy. From the last few decades of research, extension and farmers efforts have all contributed significantly to enhancing food production from 50 million tonnes in 1950-51to a land mark achievement of an estimated 265.04 million tonnes in 2014-15. The total demand for food production is estimated to reach 280 million tonnes by the year 2020 -21. Meeting this demand necessitates a growth rate of nearly 2 percent per annum in food grain production and the agriculture sector has to grow at a minimum targeted four percent per annum.. Given the challenges, the arrival of Information Communication Technology (ICT) is well timed. The benefits of the green revolution greatly improved agricultural productivity. Importance of ICT in the process of agriculture and economic development of India and to improve the farmer’s knowledge and crop yield is recognised. At present, a network of ICAR Institutes, State Agricultural Universities, Krishi Vigyan Kendras and Kissan Call Centres are spread across the country are responsible for developing, refining and disseminating innovative and latest technologies to reach the farmers. This study is based on a primary survey of 400 farmers belonging to four taluks of Hassan district of Karnataka. An enumerator- based questionnaire was used to collect information. The interview method was adopted to collect data from farmers who were involved in farming activities. According to the sample size determination method sample size is 384, but study has taken 400 samples for data collection to reduce some error values. The data is analysed using SPSS 20.0 and Excel. Along with simple table and charts, independent t-test is used to identify the differences between ICT users and non ICT users in the returns of agricultural commodities of paddy, maize, and potato

    Determinants Of FDI Inflows In High Income Countries: An Intertemporal And Cross Sectional Analysis Since 1990

    Get PDF
    The marked rise of FDI ?ows to high-income countries since the early 1990s has prompted substantial empirical research into the important determinants of FDI. This paper also has attempted to identify important determinants of FDI inflow for the selected high-income countries (23 countries) since 1990. Based on the related review of literature, six variables (Outflow, GDP, BOP, Export, Import and Labor) have been selected. Employing adding-up/multiple regression models, significant determinants were identified

    Comparitive Study on Secure Data Retrieval Framework for Military Networks

    Get PDF
    In the immensely colossal number of outgrowing commercial environment each and everything depends on the other sources to transmit the data securely and maintain the data as well in the conventional medium. Portable nodes in military environments, for example, a front line or an antagonistic area are prone to experience the undergo of eccentric system network and frequent partitions. Disruption-tolerant network (DTN) innovations are getting to be fruitful results that sanction remote contrivance conveyed by officers to verbalize with one another and access the confidential data or secret data or summon dependably by abusing outside capacity nodes or storage nodes. Thus an incipient methodology is introduced to provide prosperous communication between each other as well as access the confidential information provided by some major ascendant entities like commander or other superiors. The methodology is called Disruption-Tolerant Network (DTN). This system provides efficient scenario for sanction policies and the policies update for secure data retrieval in most challenging cases. The most promising cryptographic solution is introduced to control the access issues called Cipher text Policy Attribute Predicated Encryption (CP-ABE). Some of the most challenging issues in this scenario are the enforcement of sanction policies and the policies update for secure data retrieval. Ciphertext -policy attribute-predicated encryption (CP-ABE) is a assuring cryptographic answer for the right to gain ingress control issues. However, the quandary of applying CP-ABE in decentralized DTNs introduces several security and privacy challenges with regard to the attribute revocation, key escrow, and coordination of attributes issued from different ascendant entities. In this paper, we propose a secure data retrieval scheme utilizing CP-ABE for decentralized DTNs where multiple key ascendant entities manage their attributes independently..We demonstrate how to apply the proposed mechanism to safely and proficiently deal with the relegated information dispersed in the Interruption or disruption tolerant network DOI: 10.17762/ijritcc2321-8169.16046
    corecore