To control the quality of X-band marine radar images for retrieving information and improve inversion accuracy, research on rainfall detection from is investigated in this paper. Currently, difference correlation characteristic between rain-contaminated image rain-free utilized to detect rainfall. However, only coefficient at a position lagged azimuth utilized, statistical hard threshold adopte...

This paper examined a set of over two thousand crypto-coins observed between 2015 and 2020 to estimate their credit risk by computing probability death. We employed different definitions dead coins, ranging from academic literature professional practice; alternative forecasting models, scoring models machine learning time-series-based models; horizons. found that the choice coin-death definitio...

the effects of thiamine, ascorbic acid ami their combination an workers who are continuously exposal to lead has been investigated. in this study 60 persons in a battery industry was selected and divided into four equal groups. group i received placebo, group ii thiamine (300 mg), group iii ascorbic acid (250 mg) anil group iv thiamine (300 mg) plus ascorbic acid (250 mg) three times a day (ora...

Restricting the search space f gn to the set of truth tables of easy Boolean functions on logn variables as well as using some known hardness randomness tradeo s we establish a number of results relating the complexity of exponential time and probabilistic polynomial time complexity classes In particular we show that NEXP P poly NEXP MA this can be interpreted as saying that no derandomization ...

INTRODUCTION Since it is still controversial whether-low-to moderate long-term lead below current threshold values causes neurobehavioural deficits in adults. METHODS Forty lead-exposed workers subjects with a mean blood lead (PbB) level of 56.4 μg/dL and 40 non-lead-exposed aged matched subjects (PbB: 15.4 μg/dL) with the same socio-economic background were investigated. Participants were ad...

Many problems in bioinformatics are about finding strings that approximately represent a collection of given strings. We look at more general problems where some input strings can be classified as outliers. The Close to Most Strings problem is, given a set S of same-length strings, and a parameter d, find a string x that maximizes the number of “non-outliers” within Hamming distance d of x. We ...

This paper studies the computational complexity of the Edge Packing problem and the Vertex Packing problem. The edge packing problem (denoted by EDS ) and the vertex packing problem (denoted by DS ) are linear programming duals of the edge dominating set problem and the dominating set problem respectively. It is shown that these two problems are equivalent to the set packing problem with respec...

We study the Minimum Circuit Size Problem (MCSP): given the truth-table of a Boolean function f and a number k, does there exist a Boolean circuit of size at most k computing f? This is a fundamental NP problem that is not known to be NP-complete. Previous work has studied consequences of the NP-completeness of MCSP. We extend this work and consider whether MCSP may be complete for NP under mor...

This paper studies the range of application of the upward separation technique that has been introduced by Hartmanis to relate certain structural properties of polynomial-time complexity classes to their exponential-time analogs and was rst applied to NP [Har83]. Later work revealed the limitations of the technique and identi ed classes defying upward separation. In particular, it is known that...