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This work introduces the concept of camera handling for a 360 camera and proposes Director-360, a 360 camera enhanced with two novel handling techniques. Pointer and field-of-view (FoV) are designed to explicitly and implicitly capture the 360 photographer’s subject of interest within the 360 media at capture time. Pointer lets users specify a subject of interest about the scene by directly pointing the 360 camera as if using the camera as a flashlight, while FoV captures the user’s subject of interest within the 360 scene by mapping the user’s face direction to the 360 media. We described an implementation using deep-learning algorithms. We also presented the Director-360 Editor, which incorporates the handling data to streamline the post-editing process. To understand how Director-360 helps to compose 360 media, a pilot study was carried out to create video storytelling in three target scenarios. The results and user feedback from a pilot study were reported.

Based on the influence of the sensitivity and gain control of the photoelectric detector on the dynamic range of the laser seeker, a method for improving the dynamic range of the laser seeker was presented. Firstly the test for measuring the saturated amplitude was built, The influence of sensitivity and saturation amplitude on dynamic range of seeker were obtained; Secondly the relationship between sensitivity, saturation amplitude, gain control and dynamic range were analyzed in theory, and the method for avoiding the saturation of the detector in the process of gain control was designed. The results indicated the method that avoided output voltage of the detector saturated in advance could meet the 5V gain control of the seeker with a dynamic range of more than 90dB.

A calibration method of workpiece frames using twin-robot is presented in this paper. Path planning for workpiece is based on its frame. Thus, the workpiece frames of two robots should be calibrated to make sure the motion of the twin-robot is under the same coordinate system. However, when twin-robot are separated from the workpiece, the twin-robot cannot reach some calibration points on workpiece at the same time. So a new method is proposed to solve the problem. The translation and rotation matrices between the base frames of two robots can be obtained by measuring the coordinate values of any three non-collinear points in working space. When only one robot can actually reach the calibration point of the workpiece frame, the coordinate value of this point in another robot base frame can be obtained by the matrices calculation. Experiment results show that the calibration method is relatively precision and convenient.

As the several speeds up of railway, the operated speed is more than 300km/h, and it is a serious challenge to the safe. So, bring in the high energy radiographic testing is significative. It introduces the NDT method in railway industry, and the advantage of high energy radiographic testing, and introduces several testing results of high energy radiographic testing in swing set, shows the testing is a good method to the Non-destructive testing.

This study developed an easily-used system for designing a transtibial socket that will be fabricated by a rapid prototyping (RP) machine. This proposed system is to improve the quality of uncertainty of plaster-based process of fabricating thetranstibial socket. In this study, the concept of total surface bearing (TSB) is employed to obtain stump model of an amputee under appropriate pressure. Using TSB stump model, editing complex surface can be avoided, and the quality of sockets can be improved by the simplified design process. In the plaster-based production process, the plaster stump mold must be destroyed in order to fabricate a prosthetic socket. If a socket should be reproduced, it will be difficult to clearly point out the difference between the previous and the new stump molds. If a proper CAD system can be used, the difficulty of reproducing a socket will be easily resolved. Currently, manufacturing RP sockets is not an important issue as a convenient RP service bureau already exists. ...

A thin dipole antenna is a well-known antenna with linearly polarized wave operation. In this work, a wide-strip dipole antenna is proposed for circularly polarized wave operations. To obtain circularly polarized (CP) wave operations, there are two conditions to be satisfled. One is that the antenna must have two degenerated orthogonal modes with difierent resonant frequencies. The other is that the phase difierence of two orthogonal modes is 90 degrees. To match the flrst condition, the slab width W is tuned to generate current distributions directed in two difierent directions. In addition, the second condition is matched by asymmetric feeding point by adjusting the overlapped square width C. The parametric study is completed by the Ansoft HFSS simulator. Simulated results reveal that the CP wave is mainly in∞uenced by the slab width W. The in∞uences of the parameters C and d on the performances of the proposed antenna are also investigated in this paper. Taking i8dB as reference, there are two working bands for this proposed antenna and the measured center frequencies are 0.66GHz and 2.04GHz, respectively, and the corresponding bandwidths are 0.27GHz (40%) and 1.78GHz (87%), respectively. In addition, the measured center frequencies and bandwidths of the axial ratio are 1.94GHz and 0.53GHz (27%), respectively.

The Gossypium (cotton) genus is cultivated for their valuable production of elongated single-celled fibres initiated from ovule epidermal cells, which sustain one of the world’s largest textile industries textiles economically. Upland cotton ( Gossypium hirsutum L.) is widely grown in the People’s Republic of China, the United States, Australia, India, Pakistan and other countries in Central Asia and South America for its high yield and good fibre quality that contributed to over 90% of world’s cotton lint production, and allotetraploidy with 52 chromosomes (AADD, 2 n =4 x =52) has very complex genome of about 2.4 Gb derived of paleopolyploidy to increase 5–6-fold ploidy. The value of cotton depends on the fibre (lint) enriched by cellulose. The developmental programme of cotton fibre is highly susceptible to environmental factors in long span from single cells initiation, elongation to maturity, certainly mainly regulated by endogenous genes perhaps involved thousands of genes. Recently, the genome of G. raimondii with D genome as putative contributor to fibre-producing cotton species including G. hirsutum and G. barbadense was sequenced and assembled, which provides reference to assemble EST sequences and analyse the phylogeny, chromosomal location, gene structure, conserved domains and expression profiling. The sequence of D genome could be assisted as reference to scan and identify genes from allotetraploid cotton Biotechnology is the present and the future of cotton breeding. Applications of biotechnology have made great progress in the creation of novel germplasm, improved fibres and the creation of herbicide-resistant cotton and disease tolerant cotton, especially insect-resistant cotton such as Bt cotton. So we believe that the breakthroughs in cotton genomics and applications of biotechnology will bring new vitality to cotton breeding.

The paper presents an LCA study to discuss the environmental impact and economic performance for the leasing of a water filtration device. A proposed leasing program was evaluated and compared to the traditional sell model. The results show that the most contribution of environmental impacts occurs in the use stage, which contributed approximately 36% of total impact. In terms of economical performance, through maintenance, leasing model extended the life of components and reduced the number of components being manufactured and assembled, which could lower the cost of manufacturing. However, with the increase in service transport stage, cost slightly increased. Consequently, as compared with traditional sell model, leasing model could reduce approximately 24% of total cost which concluded high feasibility of PSS. In EEI analysis, the benefit which PSS enhanced is positive as it compared to the traditional sell model. The proposed leasing model displays the positive benefit in both environment and economic success.

This paper is on the design and implementation of a signal processing system for ground surveillance radar. Hardware structure of the signal processing system based on TI's chip TMS320C6416 as well as interfaces among hardware modules are designed. Global frame of system software is analyzed, and some key techniques are presented. This radar has great capabilities of antijamming and Low Probability Intercept(LPI), due to multiple Pulse Repetition Frequency(PRF) and biphase codes. Experimental results present that it is able to detect the interested target under complicated environments and track it steadily.

Based on some special physical properties of solar cells prepared from quantum dots polymeric materials, which have high photoelectric conversion performance, we use MOPPV solution for obtaining controllable grain sizes, good crystallinity, with a particle size of about 3.75 nm ZnSe quantum dot polymer composite materials, and different quality ratios of the composites. We also use XRD, TEM, UV-vis absorption spectra to study the characterizstics of the materials. The result shows that MOPPV and ZnSe quantum dots have effectively combined together and photoinduced charge transfer. Through the study of MOPPV, ZnSe, and MOPPV/ZnSe composite materal solar cell performance, we found that the composites exhibit an increasing trend compared with MOPPV, ZnSe monomer material photovoltaic characteristics, and the photoelectric properties of the composites showed an increase at first and then reduced with increasing quality of ZnSe quantum dots; when the ratio of MOPPV and the quality of the ZnSe is 1:1, its conversion efficiency reaches a maximum, The Voc, Isc, FF and conversion efficiency of solar cells were 0.516 V, 2.018 mA, 25.53%, and 0.167%.