The subterranean cavities are seriously threatened to construction and mining safety, and it’s important to obtain the exact localization and dimensions of subterranean cavities for the planning of ...geotechnical and mining activities. Geophysical investigation is an alternative method for cavity detection, but it usually failed for the uncertainly solution of information and data obtained by Geophysical methods. Drilling is considered as the most accurate method for cavity detection. However, the conventional drilling methods can only be used for single cavity detection, and there is no effective solution for multilayer cavities detection have been reported. In this paper, a reverse circulation (RC) down-the-hole (DTH) air hammer system with a special structured drill bit is built and a cavity auto scanning laser system based on laser range finding technique was employed to confirm the localization and dimensions of the cavities. This RC-DTH air hammer system allows drilling through the upper cavities and putting the cavity auto scanning laser system into the cavity area through the central passage of the drill tools to protect the detection system from collapsing of borehole wall. The RC-DTH air hammer system was built, and field tests were conducted in Lanxian County Iron Ore District, which is located in Lv Liang city of Shan Xi province, the northwest of china. Field tests show that employing the RC-DTH air hammer system assisted by the cavity auto scanning laser system is an efficiency method to detect multilayer cavities.
Zakład Ubezpieczeń Społecznych (ZUS) jest państwową jednostką organizacyjną mającą osobowość prawną. ZUS wykonuje zadania z zakresu ubezpieczeń społecznych na podstawie Ustawy z dnia 13 października ...1998 r. W ramach tych działań dokonuje kontroli płatników składek w zakresie wywiązywania się przez nich z obowiązku opłaty składek oraz prowadzi przymusowe dochodzenie należności z tytułu składek na ubezpieczenia społeczne i zdrowotne. Przedmiotem niniejszego opracowania jest analiza ściągalności należności na rzecz ZUS od płatników składek w Polsce w latach 2007-2012. W artykule przedstawiono rodzaje należności kierowane na rzecz ZUS oraz sposoby ich egzekucji w przypadku nieterminowych wpłat. Zaprezentowano również kształtowanie się poziomu wskaźnika ściągalności zaległych należności i najbardziej skuteczne narzędzia stosowane przez ZUS w celu jego zwiększenia. (abstrakt oryginalny)
Social Insurance Institution (ZUS) is a state organizational unit with legal personality. ZUS performs social security tasks under the Act of October 13, 1998. As part of these activities, he checks the payers of contributions in terms of their fulfillment of the obligation to pay contributions and conducts a forced investigation of receivables from social security and health insurance premiums. The subject of this study is an analysis of the collection of receivables for ZUS from contributors in Poland in 2007-2012. The article presents the types of receivables directed to ZUS and the ways of their execution in the case of late payments. It also presents the formation of the level of collection rate of outstanding receivables and the most effective tools used by ZUS to increase it. (original abstract)
Tools and Products Zintel, E.
IEEE computer graphics and applications,
09/2008, Letnik:
28, Številka:
5
Magazine Article
Recenzirano
Department editor Dave Kasik highlights some of the new computer graphics tools and products on the market. In this issue the featured tools and products are the "Smart Camera" precision position ...tracking system from WorldViz; the Nvidia Quadro FX 3600M professional GPU for notebook and laptop workstations; the OpticBook 4600 book scanner from Plustek Technology; a news item on the unveiling of the world's highest-resolution display system for scientific visualization at the University of California, San Diego; an advanced indicator from TransLumen; enhancements to the Knights Camelot CAD navigation tool from Magma Design Automation; and a 3D application from CityEngine that can generate models of cities up to 10 times faster than previous applications.
