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Aiming at the problem of architectural inflexibility, high maintenance and integration costs of power system distributed computing model based on inter-process communication (PSDCM), a power system distributed computing model based on SOA (PSDCMSOA) is proposed. The characteristic of hierarchical multi-level management and multi-region control pattern and computing node model of power system computing system are analyzed, Ward equivalence method is studied to get equivalence grid of the adjacent power grid, data service is designed to achieve the integration of distributed heterogeneous data, remote communication service is researched to complete data exchange between local node, and then realized the PSDCMSOA. Simulation experiments show that PSDCMSOA can satisfy the requirement of simulating computing of power system effectively.

This paper proposes and designs a novel human vital signals monitor system based on wireless sensor network. It can realize the real-time measurement of multi-points and multi-signals at the same time. This system adopts RF controller CC2510 as the control core and SimpliciTI protocol to set up wireless network. After gathering the signals of temperature, heart rate and blood pressure, the terminal devices send the data to the processing center to establish intelligent database resources. The practical experiment shows that the system has advantages on reliability, flexibility and low cost. It has a broad application prospect in clinic nursing and miner protection.

All-fiber optical attenuators based on an eccentric core single-mode fiber, whose core is away from the axis of the fiber, are demonstrated. By controlling the distance between the core and the axis of the fiber, attenuators with different attenuation can be made. The device is simple, reliable, and economical.

A precise method for modifying the birefringence of stress-induced high-birefringence (Hi-Bi) fiber is demonstrated by side polishing a Panda-type fiber with a maximum polished length of at least 14 cm. The polishing depth is controlled with an accuracy of 0.1 microm by piezoelectric ceramic microdisplacement. The accuracy of the birefringence is of the order of 10(-6). This method allows high-quality Hi-Bi fiber segments to be conveniently implemented with low loss at any desired birefringence between 3.17 x 10(-4) and 7.5 x 10(-5) in our experiment from one stress-induced Hi-Bi fiber and without changing the directions of the stress axes. The finite-element method is used to simulate the procedure, and the numerical results agree with the experiment.

A comb-filter based on in-fiber Mach-Zehnder interferometer (MZI) is experimentally fabricated by splicing a section of single mode noncircular twin-core fiber (TCF) between two single mode fibers (SMFs). The wavelength spacing between the adjacent transmission peaks was numerically and experimentally analyzed, and it is associated with the effective index difference of the two cores and the length of the TCF. The wavelength spacing between the adjacent transmission peaks can be narrowed by increasing the length of the TCF or the effective index difference of the two cores. This device is compact and easy to be fabricated.

A new microwave photonic filter (MPF) hybrid of MZM and fiber loop that can realize both multiple taps and flat response is presented. Based on the phase character of Mach-Zehnder modulator (MZM) and the fiber loop with some length of erbium-doped fiber (EDF), a two taps finite impulse response (FIR) filter and a high Q filter are got respectively. Combining the two filters, the flat bandpass or bandstop response is realized by changing the coupler's factor k or the gain of the EDF g . Optimizing the system parameters, a flat bandpass response with amplitude depth being more than 40dB is got k1 =0.5, k3 =0.4, g = 2, and a flat bandstop response is also obtained at k1 = 04, k3 =0.5,g = 2.

The coupled-mode equations corresponding to a novel complex long-period-grating-assisted coupler (LPGAC), which consists of both the periodic refractive index modulation and gain/loss perturbation, is introduced and the close-form analytical solution is obtained, for the first time to our knowledge. And a unique unidirectional and nonreversible filtering characteristic is achieved by adjusting the gain/loss to match with the refractive index modulation. In addition, the impact of deviations in the grating profile is also evaluated, and the results show that the required device performance can be realized by controlling the amplitude and phase deviation

By decreasing the arc power and choosing the optimal arc time, we use the FSM-20PM ARC Fusion Splicer for joining fluoride(ZBLAN) and silica fibers. The best results of the splice loss is 1.58dB, and the results can be improved if the Fusion Splicer with more stable arc power. Then glue connection is used to fix the splicing point, and the minimal loss we measured is 0.14dB. The above results show that it is possible to connect the fluoride and silica fibers by using Fusion Splicer with appropriate arc power and arc time, which will make the fabrication of these splices simpler and easier to be handled.

A total of 16 quadrants of wetlands and surrounding lands in the mid- and lower reaches of Tarim River were surveyed, and the data about the characteristics of plant communities and environmental factors were collected and counted. By using PCA (principal component analysis) ordination and regression procedure, the distribution patterns of plant communities and the relationships between the characteristics of plant community structure and environmental factors were analyzed. The results showed that the distribution of the plant communities was closely related to soil moisture, salt, and nutrient contents. The accumulative contribution rate of soil moisture and salt contents in the first principal component accounted for 35.70%, and that of soil nutrient content in the second principal component reached 25.97%. There were 4 types of habitats for the plant community distribution, i. e., fenny--light salt--medium nutrient, moist--medium salt--medium nutrient, mesophytic--medium salt--low nutrient, and medium xerophytic-heavy salt--low nutrient. Along these habitats, swamp vegetation, meadow vegetation, riparian sparse forest, halophytic desert, and salinized shrub were distributed. In the wetlands and surrounding lands of mid- and lower reaches of Tarim River, the ecological dominance of the plant communities was markedly and unitary-linearly correlated with the compound gradient of soil moisture and salt contents. The relationships between species diversity, ecological dominance, and compound gradient of soil moisture and salt contents were significantly accorded to binary-linear regression model.

A new oral drug delivery system is discussed with respect to its specific dependence on pH and ability to enhance absorption of pharmaceutical agents. This technique not only can be used to deliver the protein and polar macromolecular drugs which are currently administered by injection, but also can be used to administer antigens and vaccines.

A novel all-fiber connector is proposed for connecting each core of a twin-core fiber (TCF) to a single-core fiber (SCF) core simultaneously and accessing independently the both close cores of the TCF. The connector is mainly composed of two cascaded pieces of collinear four-core fiber (CFCF). The two close optical fields launched from the TCF are separated into two far apart optical fields, so that each optical field could be butt-coupled into one of the cores of one gemini fiber segment, which has two single-mode SCF pigtails. For the simulated example, the center distance of the two optical fields is increased from 16 μm to more than 90 μm, the cross-talk is -37 dB, and the power loss is 0.056 dB. The feasibility of the strategy is partially demonstrated experimentally by fabricating a CFCF by groove & stack & draw method and one gemini fiber segment with pigtails by flame-brushing technology.

An eccentric core single-mode fiber, whose core is away from the axis of the fiber, is fabricated by using the fiber preform goniometric-groove method and the stack-and-draw method. An eccentric core single-mode fiber without coating is spliced between two single-mode fibers. Fundamental mode and cladding modes are excited at one splicing point between the eccentric core single-mode fiber and the single-mode fiber, and propagate in the eccentric core single-mode fiber, then interfere with each other at the other splicing point. Multi-beam interference transmission spectrum is observed. An in-line fiber interferometric strain sensor based on the eccentric core single-mode fiber is realized.

A low-cost, compact, and lossless temperature sensor based on a twin-core fiber (TCF) is demonstrated and manufactured by splicing two single-mode fibers to the ends of a TCF. The extinction ratio of the comb transmission spectrum is bigger than 15 dB, and the temperature sensitivity of the coupling angle is -0.02 rad/(oC.m) at -30-90 oC and -0.032 rad/(oC.m) at 90-175 oC. Finite element method is used to calculate the supermodes of the TCF, and the result agrees well with the experiment.