Interview with Anne Persson on “The Practice of Enterprise Modeling”

We conducted the interview iteratively via email correspondence over the summer of 2017. Anne had been the general chair of PoEM 2017 in Skövde 2016 and, given her history with PoEM, we thus were very keen to learn about her views on enterprise modeling

Subsumption between queries to object-oriented databases

Most work on query optimization in relational and object-oriented databases has concentrated on tuning algebraic expressions and the physical access to the database contents. The attention to semantic query optimization, however, has been restricted due to its inherent complexity. We take a second look at semantic query optimization in object-oriented databases and find that reasoning techniques for concept languages developed in Artificial Intelligence apply to this problem because concept languages have been tailored for efficiency and their semantics is compatible with class and query definitions in object-oriented databases. We propose a query optimizer that recognizes subset relationships between a query and a view (a simpler query whose answer is stored) in polynomial time

Технологические решения для строительства эксплуатационной наклонно-направленной скважины глубиной 2757 метров на Средне-Нюрольском нефтяном месторождении (Томская область)

Объектом исследования является технологический проект на строительство эксплуатационной наклонно-направленной скважины. Цель работы – проектирование строительства эксплуатационной скважины глубиной 2757 м на Средне-Нюрольском месторождении. В процессе исследования проводились расчёты и обоснование пятиинтервального профиля скважины, конструкции, углубления и заканчивания скважины. Работа выполнена по геологическим материалам Средне-Нюрольского месторождения. В результате исследования получен технический проект на сооружение скважины глубиной 2757 метров.The object of the study is a technological project for the construction of an operational directional well. The aim of the work is the design of the construction of a production well depth of 2757 m at the Sredne-Nyurolsky field. In the course of the study, calculations and justification of the five-interval well profile, construction, deepening and completion of the well were performed. The work was carried out according to the geological materials of the Sredne-Nyurolsky deposit. As a result of the research, a technical design for the construction of a well depth of 2,757 meters was obtained