Comparing Rough Set Theory with Multiple Regression Analysis as Automated Valuation Methodologies

This paper focuses on the problem of applying rough set theory to mass appraisal. This methodology was first introduced by a Polish mathematician, and has been applied recently as an automated valuation methodology by the author. The method allows the appraiser to estimate a property without defining econometric modeling, although it does not give any quantitative estimation of marginal prices. In a previous paper by the author, data were organized into classes prior to the valuation process, allowing for the if-then, or right “rule” for each property class to be defined. In that work, the relationship between property and class of valued was said to be dichotomic.mass appraisal; property valuation; rough set theory; valued tolerance relation

Effect of nano black rice husk ash on the chemical and physical properties of porous concrete pavement

Black rice husk is a waste from this agriculture industry. It has been found that majority inorganic element in rice husk is silica. In this study, the effect of Nano from black rice husk ash (BRHA) on the chemical and physical properties of concrete pavement was investigated. The BRHA produced from uncontrolled burning at rice factory was taken. It was then been ground using laboratory mill with steel balls and steel rods. Four different grinding grades of BRHA were examined. A rice husk ash dosage of 10% by weight of binder was used throughout the experiments. The chemical and physical properties of the Nano BRHA mixtures were evaluated using fineness test, X-ray Fluorescence spectrometer (XRF) and X-ray diffraction (XRD). In addition, the compressive strength test was used to evaluate the performance of porous concrete pavement. Generally, the results show that the optimum grinding time was 63 hours. The result also indicated that the use of Nano black rice husk ash ground for 63hours produced concrete with good strengt

Institutions and properties of the transaction: influences on land rental contract design in Poland

The article analyses influences on the design of land rental contracts in Poland. Attention is paid to the effect of both the properties of the transaction as identified in Transaction Cost Economics (asset-specificity, uncertainty, frequency) and the features of the institutional environment (legal as well as customary rules) as studied by the Economics of Property Rights. The conclusion is that institutional influences have a very strong effect and should not be disregarded in the explanation of contract choice.institutions, transaction costs, contract choice, Poland, land market, Institutional and Behavioral Economics, Land Economics/Use,

Rough Fuzzy Subspace Clustering for Data with Missing Values

The paper presents rough fuzzy subspace clustering algorithm and experimental results of clustering. In this algorithm three approaches for handling missing values are used: marginalisation, imputation and rough sets. The algorithm also assigns weights to attributes in each cluster; this leads to subspace clustering. The parameters of clusters are elaborated in the iterative procedure based on minimising of criterion function. The crucial parameter of the proposed algorithm is the parameter having the influence on the sharpness of elaborated subspace cluster. The lower values of the parameter lead to selection of the most important attribute. The higher values create clusters in the global space, not in subspaces. The paper is accompanied by results of clustering of synthetic and real life data sets

THE RELIGIOUS AND SOCIAL SIGNIFICANCE OF METHODIST TICKETS, AND ASSOCIATED PRACTICES OF COLLECTING AND RECOLLECTING, 1741-2017

Among all the paper ephemera surviving from eighteenth- and early-nineteenth-century Britain, the humble Methodist ticket has attracted little attention from scholars and collectors. Issued quarterly to members as a testimonial to religious conduct, many still exist, reflecting the sheer quantity produced by 1850, and the significance of keeping practices, where Methodist habits were distinctive. This article explores first the origin and spread of tickets primarily within British Methodism, but also noting its trans-oceanic contexts. Apparently inconsequential objects, they shaped experience and knowledge, illuminating eighteenth-century religious life, female participation, and plebeian agency. Discussion then turns to patterns of saving and memorialization that from the 1740s preserved Methodists’ tickets. Such practices extended the life-cycle of the individual ticket and created the accidents of its survival, giving it new uses as an institutional resource. In recovering the dead, it acquired nostalgic value, but other capacities were lost and forgotten. The ticket’s origins, uses, and preservation intersect with major historical and historiographical currents to complicate established narratives of print, urban association, and commerce, and to present alternative understandings of collecting.Peer reviewe