Experimental modal analysis of vehicle exhaust system to determine hanger location using root mean square value

Vibration of exhaust system due to the engine operation and the condition of the road surface which is transferable to the body through the hanger affects the noise, vibration and harshness performance of the vehicle, and the life time of the hangers. In order to solve this problem of the automobile exhaust system, experimental modal analysis was carried out by utilizing a sample exhaust system of passenger car as a research object within the frequency of interest. LMS Test. Lab was used to perform modal analysis. This study estimated the dynamic characteristics of the exhaust system such as natural frequencies and mode shapes. Using frequency response function at every measuring point, root mean square value (RMS) of vibrating energy was calculated to select hanger location of exhaust system where the RMS value is comparatively small. Experimental modal analysis is an efficient tool to study and estimate the dynamic properties of the exhaust system, and calculating RMS value is also an easy method to find hanger location of the exhaust system utilizing frequency response function

Experimental verification of parameters in automobile crankshaft modelling for vibration analysis

In the interest of utilized more stable automobile components at high speed for reduction the vibration of mechanical system, dynamic characteristics analysis plays a vital role in complex mechanical parts. This paper introduces a clarified approach on statistical investigation and modal analysis methodology to study, predict and accurate crankshaft natural frequencies by using design of experiment (DOE). In this research, first, simulation had been done with MSC Nastran/ Patran to find out the natural frequencies in each mode shape of crankshaft as well as the verification with experiment was carried out. In order to less inaccuracy, numerous simplified crankshaft models were created by using these as input and DOE was established to acquire precise parameters of optimized crankshaft design as the second phase. This method can be further used for the optimizing the structural parameters and would provide some value basis to qualitative measure of parameters and determination of optimized structure. In Conclusion, modal verification accuracy between experimental and simulation has improved

User Profiling for Search Engines’ Help Systems

The Help Systems information provided by search engines can facilitate or hinder its user’s information seeking process. This paper reports a study in how users would like to see search engines’ Help Systems to be organized and presented. Six aspects of Help Systems, including navigation, design elements, technical help, conceptual help, terminological, and strategic aspects, were used as the framework to develop questionnaire for further study in stereotyping search engine users. Overall users do not expect animations, videos and speech as part of a search engine’s Help System, technical help is desirable, and the navigation to find Help page and relevant content is important

Precise two-pin voltage reference

Voltage references are essential parts of most electrically powered systems. Though simple references are often sufficiently accurate to meet the demand of most applications, precision references are still needed in many applications. The accuracy of precision voltage references can be improved by attempting to cancel the linear (first-order) and nonlinear (second and high-order) components of base-emitter voltage of a bipolar transistor.Master of Science (Consumer Electronics

Toddy palms in the paddy field: An alternative economy of farmers in Pattan Village, Taungoo Township

This paper analyzed the role of toddy palm in the economy of rural people from new perspective. Since toddy palms are found in the paddy field comparative analysis has made between toddy, paddy and peas. The study focused on three points ; How toddy palms effect on the paddy production? What are the economic cost and benefit of toddy palm located in the paddy field? How should we consider toddy palm for the future socio-economic development of Pattan Village? Data used in this paper were derived from ground surveys and open and structured interviews conducted to all household heads of Pattan Village. The analysis results showed that there is no significant evidence that toddy palm could have an effect on the production of paddy,from the present distribution pattern. Annual profit that could be gained from the products of toddy palm is higher than paddy and peas. If toddy palms are fully utilized to its capacity it could become an alternative economy for the development of farmers and rural areas

Developing and Analysis of Cyber Security Models for Security Operation Center in Myanmar

In counteraction to the increasing threat ofcyber terrorism, the modeling to be predicted inguessing the predictive models for estimating theincidence of cyber-attacks for enterprise network inMyanmar are seriously needed. Although we needthese models, there is no record of attacks,defenseless, outcome and threat to utilize thedeveloping predictive models and authentication. Themain purpose of this research is to determinewhether SOC (Security Operation Center) manageruses cyber security model by using SOC resultsfigures to prepare further cyber defense and incidentresponse plan. The goal of this study was achieved byconducting experiments on various cyber-attacksoccurred in security operation center of IndustrialControl System (ICS).Blue team, Incident Handling, SOC,Cyber Security Model, Vulnerabilities, Threats,Attack

Asia Supply Chain Report: Mandalay Region, Myanmar

The main purpose this report is to assess the potential of Mandalay to become an attractive investment site for export oriented foreign manufacturing firms. The study found that Mandalay has many external constraints to become industrial hubs of Myanmar infrastructure particularly in electricity, land and financial aspects that need to be tackled urgently and fundamentally. For internal constraints, finance is found as a major problem for business to expand. Technology, skill development, machines and equipment are found as also important internal barriers for the firms. Despite these, there have important opportunities for some industries including agricultural food processing, ICT and electronic component parts manufacturing and textile industries. By using locally abundant resources of agricultural produces and labor force coupled with money and technology brought by foreign investors, these industries have huge opportunities for growth. To be qualified local firms in Mandalay as suppliers to international companies and to become Mandalay as an attractive manufacturing site for foreign firms, a number of positive measures need to be implemented. This inevitably takes some time to achieve. For macro level interventions, foresighted and consistent policies, political will, money and time investment and patience are necessary along the way. Out of them, land issue need to handle first because unclear ownership of land and land use right are serious barriers for investors even more than the issue of high land price. The regular and reliable supply of electricity is also the next important factor to be tackled. Improvement in road, rail and port infrastructure and clear policy and rules of regional government to promote foreign investment is the third most important intervention to be done

AGRICULTURAL LAND IN MYANMAR’S DRY ZONE

Myanmar has high levels of landlessness and an uneven distribution of land among landed households, despite an abundance of land per head of population relative to other countries in the region. Land is a central issue in the post-2016 policy landscape, and efforts to provide restitution for widespread land confiscations that occurred during the period of military rule forms a major pillar of the current government’s governance agenda. In this research highlight, we present analysis of agricultural land use, distribution, access, tenure, land markets, and historical patterns of ownership and disposal. Findings are derived from a representative survey of 1578 rural households in Myanmar’s Central Dry Zone - the Rural Economy and Agriculture Dry Zone Survey (READZ). The READZ survey was conducted from April to May 2017 in four townships (Magway, Pwinbyu, Myittha, and Budalin) in Magway, Mandalay and Sagaing regions. The main two farmland categories present in the areas surveyed are lowland (paddy land; le), and ‘upland’ (ya). Lowland can be subdivided into rain-fed and irrigated lowland, and is utilized primarily for paddy cultivation. Mainly non-paddy crops are cultivated on upland, which is primarily rainfed. Upland is dominant in terms of area, but generally less fertile than lowland. Where appropriate, we disaggregate our analysis by agricultural landholding terciles. In order to derive terciles, farm households were ranked by size in ascending order and divided into three equal groups. Thus, landholding tercile 1 is the third of farms with the smallest agricultural holdings, tercile 3 the third with the largest holdings, and tercile 2 is intermediate