The a ppli cation of cer tain power stab ili zation a nd measure men t tec hniqu es to t he problem of attenuation measurement has y ielded a measureme nt syste m wit h a stab ili ty a nd resolu t ion of t he o rder o f 0.0001 decibel. A pract ical a ppli cation fo r t his tech nique was rece nt ly provided in t he calibrat ion of a rotary vane type of varia b le microwave attenu ata I' . In or...

An algorithm is described for optimally pamng a finit e set of objects. That is, given a real numerical weight for each unordered pair of objects in a se t Y, to selec t a family of mutually di sjoint pairs th e sum of whose wei ghts is maximum . The well-known optimum assignment proble m [5)2 is the sp ecial case where Y partitions into two se ts A and B suc h that pairs contained in A and pai...

® The contents of this report reflect the views of the authors, who are responsible for the facts and the accuracy of the information presented herein. This document is disseminated under the sponsorship of the Department of Transportation University Transportation Centers Program, in the interest of information exchange. (this listing includes the scope of both MATC project numbers associated ...

Biometric methods have been played important roles in personal recognition during last twenty years. These methods include the face recognition, finger print and iris recognition. Recent ly iris imaging has many applications in security systems. The aim of this paper is to design and implement a new iris recognition algorithm. In this paper, the new feature extraction methods according to log-g...

The sheepshead minnow (Cyprinodon variegatus Lacépède), an estuarine fish species, was exposed to 17alpha-ethynylestradiol (EE2) at nominal test concentrations of 0.2, 2, 20, 200, 400, 800, 1,600, and 3,200 ng/L. Fish were exposed for up to 59 d, from subadult stages to sexual maturity, under flow-through conditions. The exposure period was followed by an evaluation of reproductive success and ...

Most commercial household cleaning agents and personal care products contain the anionic surfactant linear alkylbenzene sulphonates (LAS) as the active compound. After their use they are discharged, theoretically after adequate wastewater treatment, into receiving waters finally reaching estuaries and coastal waters. Laboratory toxicity tests are useful tools in determining at which concentrati...

We measured sol1 surface C02 cfflux (F,) 111 loblolly ptnc stands ( P m u ~ t~red~i L ) located on the Vtrglnia Plcdmont (VA) and South Carollna Coastal Platn (SC) In cfforts to assess the lnlpact cl~matc, productlv~ty, and cultural practlccs have on F, in the managed loblolly plnc ecosystem The cffect of qtand dge on F, was cxamlncd using a rcplicaled chronoscqucncc approach In whlch stands ra...