In this paper we address the problem of incrementally maintaining objectoriented database (OODB) views formed using path queries. We demonstrate that traditional indices organizations, designed for query support, are not well suited for this task. As a solution, we introduce a new Satisfiability Indicating Multi-Index (SMX) organization, which maintains partial information indicating whether or...

We consider a volume maximization problem arising in gemstone cutting industry. The problem is formulated as a general semi-infinite program (GSIP ) and solved using an interiorpoint method developed by Stein. It is shown, that the convexity assumption needed for the convergence of the algorithm can be satisfied by appropriate modelling. Clustering techniques are used to reduce the number of co...

According to the American Journal of Radiology, more than half of small lesions—particularly those found in the abdomen region that includes the kidney, liver, and lung—are indeterminate by conventional CT exams. As a result, additional testing, such as a PET or MR scan, may be required to make a definitive diagnosis, possibly resulting in unnecessary healthcare costs and patient anxiety. It’s ...

To properly and quickly evaluate an object’s shape, in a manner that is suitable for real-time applications, set of parameters has been created the shape parametric description (SPD) elaborated. This solution focused on classification amber gemstones according to shape. improve results obtained by SPD, most popular machine learning algorithms were applied tested. The proposed method (i.e., SPD)...

| In this paper, we describe the design and implementation of a scientiic database for the map assembly tasks performed by the geneticists at the University of Michigan Human Genome Center. Our system managescomplex genomicdata and supportsthe automationof the associatedmap assembly tasks. For this purpose, we have developed an overlap reenement hierarchy characterizing the types of overlap and...

Ruby is one of the most popular and high-value gemstones that always attract gemologist jeweler in diamond market. The wide use ruby various industries makes grading this gems more complicated due to a lot synthetic imitation rubies are made. current techniques mostly depending on human visual assessment which prone errors. This paper proposes system helps clarity characteristic non-invasive ma...

Artisanal and small-scale miners are facing unprecedented challenges due to the novel coronavirus (Covid-19) pandemic. The paper adopts a practice-based approach examine impact of Covid-19 on gold gemstone artisanal mining (ASM) practices in sub-Saharan Africa. It highlights informality ASM discusses how Ghana Kenya governments’ measures have significantly increased vulnerabilities communities....

Official journal of the Institute Physics - Sri Lanka. Full text articles are available. The also has a website at http://www.ip-sl.org/sljp/The new email for Editor is [email protected].