In 1930 the writer (7Y presented the results of early experiments on the control of barley covered smut (Ustilago hordei (Pers.) Kell, and Sw.) with dust fungicides, together with a rather comprehensive review of the pertinent literature on the subject up to that time. The development since then of new fungicidal dusts, some of which were effective in controlling barley stripe (Helminthosporium...

A database merging technique is a strategy for combining the results of multiple, independent searches into a single cohesive response. An isolated database merging technique selects the number of documents to be retrieved from each database without using data from the component databases at run-time. In this paper we investigate the eeectiveness of two isolated database merging techniques in t...

1. The continuation of our experiments with intradermal Type I pneumococcus infection in rabbits has furnished further evidence of the marked analogies between this condition and that of human lobar pneumonia. 2. It has been found that the amount of antiserum necessary for successful therapy increases as the disease progresses, and that this progression has a definite mathematical character. Su...

This paper presents a method for data-driven constructive induction, which generates new problemoriented attributes by combining the original attributes according to a variety of heuristic rules. The combination of attributes are defined by different logical and/or mathematical operators, thus producing a potentially very large space of features. This space is reduced by applying an “attribute ...

It is well recognized that collaborative learning enhances academic performance by pooling the diverse strengths of co-participants and by providing a healthy competitive learning environment. Existing techniques for forming collaborative groups emphasize on effective transfer of knowledge between learners. However, mastery of any subject requires not just knowledge, but a distinct set of learn...

In recent years, sequential optimality conditions are frequently used for convergence of iterative methods to solve nonlinear constrained optimization problems. The sequential optimality conditions do not require any of the constraint qualications. In this paper, We present the necessary sequential complementary approximate Karush Kuhn Tucker (CAKKT) condition for a point to be a solution of a ...

Type II CRISPR immune systems in bacteria use a dual RNA-guided DNA endonuclease, Cas9, to cleave foreign DNA at specific sites. We show here that Cas9 assembles with hybrid guide RNAs in human cells and can induce the formation of double-strand DNA breaks (DSBs) at a site complementary to the guide RNA sequence in genomic DNA. This cleavage activity requires both Cas9 and the complementary bin...

Shadow detection is a fundamental challenge in the field of computer vision. It requires network to understand global semantics and local details image. All existing methods depend on aggregation features multi-stage pre-trained convolution neural but comparison high-level capabilities, low-level capabilities provide less performance. Using not only increases complex difficulty also reduces tim...