We consider the problem of testing small set expansion for general graphs. A graph G is a (k, φ)expander if every subset of volume at most k has conductance at least φ. Small set expansion has recently received significant attention due to its close connection to the unique games conjecture, the local graph partitioning algorithms and locally testable codes. We give testers with two-sided error...

Determination of mutagenic activity in bacterial systems has become accepted as an initial step in the evaluation of the carcinogenic potential of new chemicals. In this paper, a bacterial mutagen screening technique is described in which chemicals can be tested in 10 tester strains over a 10,000-fold concentration gradient both with and without metabolic activation. Using this assay, 855 chemi...

To translate and culturally adapt the Patient Observer Scar Assessment Scale, POSAS, to Norwegian explore its test-retest, intra- inter-tester reliability. POSAS was translated into following international guidelines in collaboration with an translation bureau. Twenty-six adults 24 children were recruited from a burns outpatient clinic. Three observer-categories: doctor, nurse physiotherapist, ...

Das Testen von Software und Systemen ist heute ein anerkannter Bestandteil der Entwicklung und der Einführung von IT. Um Testen auch aus Terminund Kostengründen effektiv einzusetzen, muss es professionell umgesetzt werden. Das erfordert eine gezielte Ausund Weiterbildung der Tester. Gerade im Rahmen steigender Komplexität der zu testenden Systeme, der wachsenden Anforderung an Qualität und der ...

0-7803-7542-4/02 $17.00 © 2002 IEEE Panel P1.2 ITC INTERNATIONAL TEST CONFERENCE CAN IC TEST LEARN FROM HOW A TESTER IS TESTED Rochit Rajsuman Advantest America R & D Center, Inc. 3201 Scott Boulevard Santa Clara, CA, 95054 A tester as well as IC is a system at different abstraction levels. The testing of each of these systems should contain individual component testing as well as a full system...

For many years, the semiconductor industry has been predicting the emergence of DFT tester market, enabled by increasing number of devices being designed with DFT methodologies such as scan and BIST. The search for low cost DFT tester solutions has resulted in the first ITRS roadmap for a DFT tester in 1999 and a major revision of this roadmap in 2001. While it is generally understood that a DF...

We detect mutagens by using a special set of bacterial tester strains. We have described our test system for mutagen and carcinogen detection in a series of recent papers. I will give here only a summary of some of these results, omitting references to other work, which is credited in our original papers. A simple procedure for combining human (or rat) liver for carcinogen activation and the ba...

A series of sebacic acid esters containing mercaptobenzothiazole and dialkylenedithiocarbamate, which are potential environmentally friendly lubricating grease additives, were synthesized. The tribological properties as lubricating additives in Li-soap greases were evaluated using a 4-ball tester and SRV tester. The results show that the series of sebasic acid esters with dioctyldithiocarbamate...