New Method For Adjustment Research Articles

Concise feature pyramid region proposal network for multi-scale object detection

Object detection is a hot research issue in the field of computer vision. Many methods focus on detecting large objects. And features of small objects are easily weakened or even disappeared after multiple convolution layers. So the detection rate of multi-scale objects is unsatisfied. Aiming at this problem, a concise feature pyramid region proposal network (CFPRPN) is proposed to address the problem of small objects detection in this paper without missing the large objects. In the process of object detection, we propose a new method of adjustment for the object location. So the balanced detection of multi-scale objects is realized. CFPRPN combines image pyramids and feature pyramids. An image pyramid consists of scaled versions of an image and the feature pyramids produce multiple layers’ feature maps. They are both conducive to capturing the feature information of small objects in deep convolutional networks. At the same time, proposals of overlapping sizes from different layers are applied to improve the recall rate of multi-scale objects. These series operations are beneficial for CFPRPN to extract better proposals. We experimentally prove that after adding the fine-tuning location, the detection rate of multi-scale object is further improved. The inspiring thing is that refining location method is suitable for most algorithms of object detection.

A new method of adjustment of inlet boundary for improving heat transfer of mixed convection in a vertical channel

This article is dedicated to a new method for improving heat transfer of mixed convection in a vertical channel from the numerical perspective. An adjustable inlet boundary is proposed in the new method to substitute an inlet that is completely occupied by the amount of fluid provided by forced convection included in mixed convection. According to this new method, the flow reversal occurring in the large Richardson number situation can be eliminated significantly, which results in an improvement in the heat transfer rate of mixed convection. In order to investigate a compressible flow problem, this study focuses on four methods, i.e., Roe scheme, preconditioning, dual time stepping, and the LUSGS (Lower–Upper Symmetric-Gauss–Seidel), to solve the governing equations. Except for the aperture occupied by the mount of fluid provided by forced convection, this study simulates the non-reflecting boundary conditions in other open boundaries. Based on our previous study which has successfully explored a phenomenon of flow reversal, this study intends to enhance the heat transfer rate under this circumstance, and the result has shown a significant improvement, by 29 percentage, comparing with the previous study. Also, a criterion of estimation of the necessity of forced convection included in mixed convection is proposed for enhancing heat transfer rate. Present results and existing results have good agreement.

Experimental setting for research of ballistics mines and shells

In theory the construction of basic functional elements of the experimental setting and method of research of internal and external ballistics of mines and shells is grounded on spring and pneumatic models. Distances got at measurings of dependence and to the block hours, and also the heights of raising of models of mines and shells from the corner of increase at firing from model mortars are needed for debugging of the system of passive phоtо- and radio-locations of trajectory of flight of mines and shells and raising of new method of adjustment of firings taking into account the meteo- and ballistic influencing.

Shrunken p‐Values for Assessing Differential Expression with Applications to Genomic Data Analysis

In many scientific problems involving high-throughput technology, inference must be made involving several hundreds or thousands of hypotheses. Recent attention has focused on how to address the multiple testing issue; much focus has been devoted toward the use of the false discovery rate. In this article, we consider an alternative estimation procedure titled shrunken p-values for assessing differential expression (SPADE). The estimators are motivated by risk considerations from decision theory and lead to a completely new method for adjustment in the multiple testing problem. In addition, the decision-theoretic framework can be used to derive a decision rule for controlling the number of false positive results. Some theoretical results are outlined. The proposed methodology is illustrated using simulation studies and with application to data from a prostate cancer gene expression profiling study.

The constants of the moon's physical libration derived on the basis of four series of heliometric observations from the years 1877 to 1915

A new method for the adjustment of heliometric libration observations of the Moon is given; it is simple from the mathematical point of view, satisfies the principles of the least-squares method, and can easily be applied to programming of calculations of electronic computers. On the basis of 3282 observations of the Moon carried out in four heliometric series from the years 1877 to 1915, the author has determined the forced libration constants, simultaneously with those of free libration in longitude, by using his new method of adjustment of heliometric observations. A joint adjustment has been performed by eliminating the Moon's mean radius corresponding to each series, as it might be affected by irradiation. At the same time an exact proof is given for the uniqueness of the solution for the mechanical ellipticity of the Moon f, which lies below the critical value 0.662. From the libration constants obtained new values for the differences of the Moon's principal moments of inertia are derived. Moreover, the coordinates of crater Mösting A, which constitutes a first order point of triangulation on the Moon, are obtained with high accuracy. A conclusion is drawn that, in the problem discussed, a simultaneous analysis—based on a correct adjustment method—of several heliometric series with a sufficient number of observations covering a sufficiently long period, is necessary to obtain reliable results, fully satisfying the requirements of scientific exactitude.