Codes with Locality for Two Erasures

In this paper, we study codes with locality that can recover from two erasures via a sequence of two local, parity-check computations. By a local parity-check computation, we mean recovery via a single parity-check equation associated to small Hamming weight. Earlier approaches considered recovery in parallel; the sequential approach allows us to potentially construct codes with improved minimum distance. These codes, which we refer to as locally 2-reconstructible codes, are a natural generalization along one direction, of codes with all-symbol locality introduced by Gopalan \textit{et al}, in which recovery from a single erasure is considered. By studying the Generalized Hamming Weights of the dual code, we derive upper bounds on the minimum distance of locally 2-reconstructible codes and provide constructions for a family of codes based on Tur\'an graphs, that are optimal with respect to this bound. The minimum distance bound derived here is universal in the sense that no code which permits all-symbol local recovery from $2$ erasures can have larger minimum distance regardless of approach adopted. Our approach also leads to a new bound on the minimum distance of codes with all-symbol locality for the single-erasure case.Comment: 14 pages, 3 figures, Updated for improved readabilit

Expert system for Sweep Frequency Response Analysis of Power Transformer

In recent years there have been widespread interests in sweep frequency response analysis of transformer. SFRA is being popular because without, opening of transformer we can detect the different faults. In classical method the interpretation of the result to diagnosis the fault in power transformer depends upon the experience of human experts. Sometime a high degree of inconsistency and ambiguity have absorbed regarding interpretation of result by different human experts, so there is a need of development Expert system for SFRA Data analysis. This paper explains in detail expert system developed by authors. The working Principle has been applied to the power transformer Keywords: SFRA, DGA, Expert system, Data analysi

A STUDY ON THE WORK-LIFE BALANCE OF WOMEN TEACHERS IN PRIVATE SCHOOLS OF BANDGAON BLOCK IN WEST SINGHBHUM DISTRICT OF JHARKHAND

The paper takes an in- depth look at work life balance considering in view of Balance in work and family life is an emerging challenge for women teachers of private School. The job of working women has changed throughout the world due to economic conditions and social demands. Although the significance of the ability to read and write can not be undermined, it's arguable that in order to effectively inform socio-economic development, literacy alone isn't enough. Quality education is essential for a state or a country to make strides in ground breaking exploration and other developments to ameliorate the quality of life of citizens and to ensure equitable and sustainable development develop a career. From this pressure most of rural women choose teaching profession. The present research categorizes selected variables as work and family related factors to study work life balance. This paper analyzes the causes of work and life imbalance with respect to Women teachers. An aggregate of 36 teachers responses from primary, secondary and high school are included in the study. Average literacy rate of Bandgaon Block in 2011 were 54.46 in which, man and women literacy were 69.02 and 39.95 respectively. Total literate in Bandgaon Block were 805 of which man and woman were 547 an 258 respectively. The study also brings out the relation between the various factors such as age, time spent, levels of stress, working overtime and balancing work and personal life of women teaching professionals. This study also identifies main problems and challenges which faced by unwedded and wedded working women. Both qualitative (interviews) and quantitative (questionnaires) instruments are taken to fulfill the objectives. Random sampling method was used for collection of primary data through questionnaires and interviews

Design Prediction and Performance of Piles for Seismic Loads

Pile foundations are regarded as a safe alternative for supporting structures in seismic areas. The performance of piles depends on soil profile, pile and earthquake parameters. The soils may also be prone to liquefaction. In non-liquefying soils the shear modulus degrades with increasing strain or displacements. Material damping increases with increasing strain or displacement. Stiffness of single pile and pile groups are needed for different modes of vibration; e.g., vertical vibrations, horizontal sliding in x or y direction, rotation about x or y axis and torsion. Group action is generally accounted for by including interaction factors. Pile response in any mode of vibration is determined from principles of structural dynamics. In liquefiable soils, the liquefaction may lead to substantial increases in pile cap displacements above those for the non-liquefied case. Down-drag due to liquefied soil may also pose problems. After liquefaction, if the residual strength of the soil is less than the static shear stresses caused by a sloping site such as a river bank, lateral spreading or down slope displacements may exert damaging pressures against the piles as observed during the 1964 Niigata and the 1995 Kobe earthquakes. The paper presents state of the art on analysis and design of piles subjected to seismic loading

Shallow Foundations for Seismic Loads: Design Considerations

The seismic design of foundations for structures depends on dynamic bearing capacity, dynamic settlements and liquefaction susceptibility of soil. The dynamic bearing capacity problem has been attracting the attention of researchers during the last about fifty years. Till today (2013), there is no accepted dynamic bearing capacity theory. Most analysis for design of shallow foundations under seismic loads are based on the assumption that the failure zones in soil occur along a static failure surface. This is the pseudo-static approach. An attempt has been made in this paper to summarize the currently available information on design of shallow foundations under seismic loading. The case of a foundation resting on an upper non-liquefying layer overlying a layer susceptible to liquefaction is also included. The methods for determining the foundation settlements are also discussed