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The low efficiency and instability of electron emission from two-dimensional (2D) materials such as WS2 and NiS hamper application to vacuum microelectronic devices. Although nickel-based alloys have many favorable physicochemical properties suitable for nanoelectronics, electron field emission (FE) from heterostructures comprising tungsten-nickel sulfide alloys and graphite carbon (WNi–S/C) has been seldom studied because it is difficult to fabricate the nanostructures in situ. In this work, field emitters composed of the WNi–S/C nanobelt composite are produced on Si microchannel plates (WNi–S/C@Si) hydrothermally. The structure has a porous and vertically aligned 3D morphology in addition to excellent adhesion strength with the substrate. Geometrical modulation of the WNi–S/C@Si is performed by changing the hydrothermal reaction temperature and an ultralow turn-on electric field of 0.51 V μm−1 for a current density 0.1 mA cm−2, threshold electric field of 0.65 V μm−1 for a current density of 1 mA cm−2, and stability of 97.1% for 8 h are accomplished. The related mechanisms are investigated and discussed. Moreover, finite element simulation shows that not only the shape of the nanostructures but also the high aspect plays a key role in reducing screen effects. These outstanding properties suggest large potential in high-performance FE and vacuum nanodevices.

Thermoelectric materials are promising for energy harvesting using waste heat. The thermal management of the thermoelectric materials attract scientific and technological interests. The narrow bandgap semiconductor BiAgSe2 is a good candidate for thermoelectric materials due to its ultralow thermal conductivity. The mother compound BiAgSe2 crystallizes in hexagonal symmetry at room temperature, but experiences structural transitions to cubic phase at high temperature. By contrast, the daughter compound BiAgSeTe exhibits long range ordering and crystallizes into cubic phase at room temperature. Nevertheless, the local structural disorderings due to the Bi3+ and Ag+ anti-site defects, as well as local structural distortions, are ubiquitous in both parent BiAgSe2 and BiAgSeTe. BiAgSeTe exhibits distinct transport properties owing to the disordering-induced drastic changes in the electronic band structure, as well as the scattering dictated by the point defects. It is suggested that BiAgSe2 and BiAgSeTe could be good candidates for phonon glass and crystal glass (PGEC)-type thermoelectrics.

Siamese network based trackers describe object tracking as a similarity matching problem and these trackers achieve state-of-the-art performance on multiple benchmarks. However, due to the non-update of the appearance template and the change of the object appearance, the tracking drift problem often occurs, especially in the background clutter scene. Effective appearance template update methods can improve tracker performance, but most trackers use simple linear interpolation to update the template or do not update the initial template at all. Through experiments, we find that the channel response of the search region with the adjacent frame appearance template is often better than that with the initial frame appearance template. So we add the results of the previous frame prediction as a new template branch to the Siamese network to form a Triplet network. We applied the Triplet network to the SiamFC and SiamCAR, called TripFC and TripCAR. We tested on four challenging benchmarks (GOT-10K, OTB2013, OTB2015, UAV123). The experiments show that our method is powerful and effective, it can be easily embedded into the Siamese trackers. TripFC has a good effect on solving the problem of tracking drift. If necessary we can publish the code to facilitate research in this area.

Objective To relieve long-term malnutrition caused by a malignant tumor affecting the pylorus and to prolong the patient survival. Methods A patient presented with complete pyloric obstruction due to pyloric tumors, and achieved good therapeutic effects through nutritional support and effective chemotherapy. Results After about 40 days of treatment, all physiological indicators were improving. After chemotherapy, the pyloric tumor shrank and the complete obstruction was relieved. The patient was able to eat and drink normally. Conclusion Nutritional support, combined with chemotherapy, may effectively treat complete pyloric obstruction caused by advanced tumors.

Most randomized trials for acute promyelocytic leukemia (APL) have investigated highly selected patients under idealized conditions, and the findings need to be validated in the real world. We conducted a population-based study of all APL patients in Zhejiang Province, China, with a total population of 82 million people, to assess the generalization of all-trans retinoic acid (ATRA) and arsenic as front-line treatment. The outcomes of APL patients were also analyzed. Between January 2015 and December 2019, 1,233 eligible patients were included in the final analysis. The rate of ATRA and arsenic as front-line treatment increased steadily from 66.2% in 2015 to 83.3% in 2019, with no difference among the size of the center (≥5 or p = 0.12) or age (≥60 or p = 0.35). The early death (ED) rate, defined as death within 30 days after diagnosis, was 8.2%, and the 3-year overall survival (OS) was 87.9% in the whole patient population. Age (≥60 years) and white blood cell count (>10 × 109/L) were independent risk factors for ED and OS in the multivariate analysis. This population-based study showed that ATRA and arsenic as front-line treatment are widely used under real-world conditions and yield a low ED rate and a high survival rate, which mimic the results from clinical trials, thereby supporting the wider application of APL guidelines in the future.

Gastrointestinal probiotics play an important role in maintaining intestinal bacteria homeostasis. They might benefit people with human immunodeficiency virus/acquired immunodeficiency syndrome (HIV/AIDS), which remains a global health challenge. However, there is a controversy regarding the efficacy of probiotics for the treatment of AIDS. This study systematically reviewed the evidence of the effects of existing probiotic interventions on AIDS and sought to provide information on the role of probiotics in the treatment of HIV/AIDS patients. A meta-analysis of studies identified by screening multiple databases was performed using a fixed-effects model in Review Manager 5.2 software. The meta-analysis showed that probiotics could reduce the incidence of AIDS-related diarrhea (RR = 0.60 (95% CI: 0.44–0.82), p = 0.001). The short-term use of probiotics (supplementation duration shorter than 30 days) did not reduce the incidence of diarrhea (RR = 0.76 (95% CI: 0.51–1.14), p = 0.19), while the long-term use of probiotics (supplementation duration longer than 30 days) reduced diarrhea (RR = 0.47 (95% CI: 0.29–0.76), p = 0.002). Probiotics had no effect on CD4 cell counts in HIV/AIDS patients (MD = 21.24 (95% CI: −12.95–55.39), p = 0.22). Our data support that probiotics were associated with an obvious reduction in AIDS-related diarrhea, which indicates the need for additional research on this potential preventive strategy for AIDS.

Rituximab is an IgG1 monoclonal antibody approved for the treatment of diffuse large B-cell lymphoma (DLBCL); however, its efficacy is poor in some patients. Previous studies indicate that the difference in efficacy may be due to antibody-dependent cell-mediated cytotoxicity (ADCC). The effect of ADCC is closely related to Fcγ receptor IIIA (FcγRIIIa) receptor gene polymorphisms, but no study has investigated this gene in patients with DLBCL in China. In this study, we explored FcγRIIIa gene polymorphisms in patients with DLBCL in China and the ethnic differences in the FcγRIIIa gene. Moreover, we determined the relationship between FcγRIIIa gene polymorphisms and the effect and toxicity of rituximab treatment. Peripheral blood samples of 60 patients with newly diagnosed stage I/II DLBCL who received standard treatment with rituximab were collected, and DNA samples were extracted and normalized. Among the FcγRIIIa gene polymorphisms, there was a homozygous mutation, a heterozygous mutation, and a wild-type genotype at the site of 161514542 (rs396991). The proportion of these genotypes was significantly different from those found in previous studies for European and American populations and healthy Chinese populations. Moreover, we found that individuals with the homozygous (158-V/V) or heterozygous (V/F) mutation possessed better near-term effectiveness of the standard chemotherapeutic treatment, although there was no significant difference in long-term survival. However, patients with one of these genotypes usually suffer from a more severe hematological toxicity in response to the rituximab treatment. In conclusion, knowledge of a patient's FcγRIIIa gene polymorphism may be of value for the individualized treatment of DLBCL, which is worthy of follow-up research.

Objective To reveal the proportion of concomitant extragenital malformations in a large cohort of Chinese patients with Mayer-Rokitansky-Kuster-Hauser (MRKH) syndrome. Study Design Retrospective study. Setting Tertiary teaching hospitals in China. Patient(s) A total of 1,055 Chinese Han women with MRKH syndrome diagnosed and treated at 11 Chinese tertiary teaching hospitals from January 2015 to January 2020. Intervention(s) Karyotype analysis, hormone profiling, pelvic ultrasonography, spinal roentgenograms, urologic ultrasonography, and Chinese female reproductive tract malformation registry platform ( https://ecrf.linklab.com/ ). Main Outcome Measure(s) Patients’ demographic and clinical characteristics, concurrent malformations, and family histories. Result(s) Of the 1,055 Chinese Han patients with MRKH, 69.6% had type I MRKH syndrome and the remaining 30.4% had type II MRKH syndrome. Among the type II patients, 12.6% had mullerian duct aplasia, unilateral renal aplasia/ectopic kidney, and cervicothoracic somite dysplasia association. Skeletal malformations were the most common associated extragenital malformations in the study (22.0%, 232/1,055), of which idiopathic scoliosis and congenital vertebral malformations were the 2 main skeletal malformations (80.6% and 14.2%, respectively). Renal malformations were the second-highest associated extragenital malformations (9.7%, 102/1,055), with unilateral renal agenesis and ectopic kidney being the most common renal malformations (48.0% and 22.5%, respectively). Conclusion(s) Type II disease was less common among Chinese patients with MRKH syndrome compared with European patients. Skeletal malformations were more common extragenital malformations than renal malformations in our cohort.

Software plays an increasingly important role in today's world. With the advent of open-source software, an increasing number of developers begin to focus on and apply open-source software as a basic tool for their program development. However, at the same time, introducing open-source software into their own software introduces various types of defects and disadvantages. These unknown risks may cause incalculable economic loss aud credit crises if they were to be exploited in the future. Therefore, it is an important and urgent problem to detect the components of open-source software that may be reused when outsourcing software. To help detecting opensource software components in large-scale software projects, this paper proposes automatic identification technology for subnetworks with similar structural characteristics. This technology is based on node role classification, node similarity matching, and similar subnetwork search. This subject applies complex network technology to the comparison of software networks. In contrast to traditional code detection technology, this study does not constrain the text information of the software's source code. Considering that the basic skeleton structure of an application, in the processes of code reuse and features, remains the same, its network structure is used instead of its software structure to avoid problems such as poor detection results of similar codes as a result of text modification. This technology starts from the software features and the structure of software network.

Ni3S2/rGO (reduced graphene oxide) nanoparticles ensemble has been synthesized on the nickel foam as the supercapacitor electrode material by a facile microwave irradiation route. The resultant Ni3S2/rGO electrode exhibits superior capacitive performance, which is severalfold that of the bare Ni3S2. Especially, the Ni3S2/rGO electrode with 20 mg GO precursor (Ni3S2-20) shows highest areal and mass specific capacitances of 1.96 F cm−2 and 1192 F g−1 among all the studied samples, respectively, at the current density of 2 mA cm−2, and the capacitance can be retained to 95.4% after 10,000 cycles at the current density of 10 mA cm−2. A supercapacitor device fabricated by the Ni3S2-20 as both cathode and anode delivers a wide potential window in the range of 0–1.62 V, high areal and mass specific capacitances of 553.2 mF cm−2 and 179.6 F g−1 at the current density of 2 mA cm−2, respectively, together with a high energy density of 67.9 Wh kg−1 at the power density of 535.7 W kg−1. The design of fast and facile synthesis strategy can offer a new insight into developing novel composite electrodes composed of carbon-based materials and pseudocapacitor materials for emerging energy storage applications.

Recently, sparse representation-based (SR) methods have been presented for the fusion of multi-focus images. However, most of them independently consider the local information from each image patch during sparse coding and fusion, giving rise to the spatial artifacts on the fused image. In order to overcome this issue, we present a novel multi-focus image fusion method by jointly considering information from each local image patch as well as its spatial contextual information during the sparse coding and fusion in this paper. Specifically, we employ a robust sparse representation (LR_RSR, for short) model with a Laplacian regularization term on the sparse error matrix in the sparse coding phase, ensuring the local consistency among the spatially-adjacent image patches. In the subsequent fusion process, we define a focus measure to determine the focused and de-focused regions in the multi-focus images by collaboratively employing information from each local image patch as well as those from its 8-connected spatial neighbors. As a result of that, the proposed method is likely to introduce fewer spatial artifacts to the fused image. Moreover, an over-complete dictionary with small atoms that maintains good representation capability, rather than using the input data themselves, is constructed for the LR_RSR model during sparse coding. By doing that, the computational complexity of the proposed fusion method is greatly reduced, while the fusion performance is not degraded and can be even slightly improved. Experimental results demonstrate the validity of the proposed method, and more importantly, it turns out that our LR-RSR algorithm is more computationally efficient than most of the traditional SR-based fusion methods.

With the increase of the speed of vehicle, the thermal protection system of its powerplant requires higher insulation materials. Phase change materials can absorb large amounts of heat in short time. So the introduction of phase change materials in thermal insulation materials can achieve efficient insulation in a limited space for a short time. In this paper, a new phase change thermal insulation material was prepared by pressure molding with microporous calcium silicate as matrix and Li2CO3 as phase change material. The morphology stability, exudation and heat insulation of the materials were tested. The results show that the porous structure of microporous calcium silicate has a good encapsulation when the phase transition of Li2CO3 is changed into liquid. And the material has no leakage during use. The thermal performance test also shows that the insulation performance of the material has obvious advantages in the short term application.

Terahertz (THz) frequency modulated continuous wave (FMCW) technology is a means of nondestructive testing. The signal’s nonlinearity is an unavoidable problem in the daily application of THz FMCW technology. The signal’s nonlinearity will lead to the spectrum broadening of the FMCW’s beat frequency (BF) signal, which degrades the range resolution and result in distance-measuring error. Traditional methods require additional hardware or require a lot of computation, which are not conducive to the miniaturization of the system and real-time measurement. A novel method for correcting the nonlinear error of THz FMCW technology has been proposed and demonstrated in this article. In the proposed method, the windowed Fourier transform (WFT) is introduced to estimate the BF corresponding to the measured target, according to the linearity distribution of voltage-controlled oscillator (VCO). In this way, the measured target's BF can be accurately estimated from the unprocessed BF signal with a poor linearity. From the estimated BF of the reference target, the non-linear compensation coefficients are calculated. With the non-linear compensation coefficients, the non-linearity of the output BF signal can be calibrated. The results of simulations and experiments show that the proposed method allows the range resolution of an FMCW system to reach the theoretical limit.

Existing tracking algorithms often suffer from the drift and lost problems caused by factors such as pose variation, illumination change, occlusion and motion. Therefore, developing a robust and effective tracker is still a challenging task. In this paper, we propose a real-time compressive tracking based on online Hough forest. The gray and texture features of discrete samples are extracted and compressed via the random measurement matrix. Online Hough forest classifier is used to vote the location probability of the target, and it optimizes the confidence map estimation for the target detection. The location of target being tracked is determined by combining the upper frame of the target center location and the probability confidence map of the incremental Hough forest. Finally, the classifier parameters are updated online by introducing the illumination variation and target occlusion feedback mechanism adaptively. The experiments with state-of-the-art algorithms on challenging sequences demonstrated that the proposed algorithm can effectively enhance the robustness and accuracy, and inherit the real-time performance of the compressive tracking algorithm.

Electronic state transitions, especially metal–insulator transitions (MIT), offer physical properties that are useful in intriguing energy applications and smart devices. But to-date, very few simple metal oxides have been shown to undergo electronic state transitions near room temperature. Herein, we demonstrate experimentally that chemical induction of double-exchange in two-dimensional (2D) nanomaterials brings about a MIT near room temperature. In this case, valence-state regulation of a 2D MnO2 nanosheet induces a Mn(III)–O–Mn(IV) structure with the double-exchange effect, successfully triggering a near-room-temperature electronic transition with an ultrahigh negative magneto-resistance (MR). Double-exchange in 2D MnO2 nanomaterials exhibits an ultrahigh MR value of up to −11.3% (0.1 T) at 287 K, representing the highest reported negative MR values in 2D nanomaterials approaching room temperature. Also, the MnO2 nanosheet displays an infrared response of 7.1% transmittance change on going from 270 to...

// Yu-Peng Wu 1, * , Shao-Hao Chen 1, * , Shi-Tao Wang 1, * , Xiao-Dong Li 1 , Hai Cai 1 , Yun-Zhi Lin 1 , Xue-Yi Xue 1 , Yong Wei 1 , Qing-Shui Zheng 1 , Ning Xu 1 1 Department of Urology, First Affiliated Hospital of Fujian Medical University, Fuzhou 350005, China * These authors have contributed equally to this work Correspondence to: Ning Xu, email: drxun@163.com Keywords: infiltrating ductal carcinoma, acinar cell carcinoma, PCa, SEER Received: December 12, 2016 Accepted: February 20, 2017 Published: March 10, 2017 ABSTRACT Infiltrating ductal carcinoma (IDC) is a rare histologic subtype of prostate cancer. We investigated the clinicopathological features and prognosis of IDC compared with acinar cell carcinoma (ACC). We identified 3814 men diagnosed with prostate cancer between 2004 to and 2013 in the Surveillance, Epidemiology, and End Results database, including 511 IDC and 3303 ACC cases. Prostate cancer-specific survival (PCSS) was compared using univariate and multivariate Cox proportional hazards models. Generally, IDC occurred in older men (≥ 65 years old) and presented with larger sizes, and higher grades, American Joint Committee on Cancer (AJCC) stages, AJCC T stages, lymph node positive rates and metastasis rates. Men with IDC were less likely to undergo radical prostatectomy, but more likely to be treated with adjuvant radiation than men with ACC. Five-year PCSS rates were significantly worse in IDC. In the multivariate analysis, patients with ACC had a better PCSS than patients with IDC. In conclusion, IDC has unique clinicopathological characteristics and has worse prognosis than ACC. Multivariable Cox regression analysis showed that age over 85 years, higher grade and T stage, and metastasis at diagnosis were independent prognostic factors of worse survival outcomes, whereas radical prostatectomy was an independent prognostic factor of better survival outcomes.

Background: The Food and Drug Administration recently announced that the use of morcellation may cause fibroids or pelvic dissemination and metastasis of uterine sarcoma; therefore, the use of morcellation is limited in the USA. A large sample study is necessary to assess the proportion of uterine malignant tumors found in patients with laparoscopic myomectomy. Methods: A national multicenter study was performed in China. From 2002 to 2014, 33,723 cases were retrospectively selected. We calculated the prevalence and recorded the clinical characteristics of the patients with malignancy after morcellation application. A total of 62 cases were finally pathologically confirmed as malignant postoperatively. Additionally, the medical records of the 62 patients were analyzed in details. Results: The proportion of postoperative malignancy after morcellation application was 0.18% (62/33,723) for patients who underwent laparoscopic myomectomy. Nearly 62.9% (39/62) of patients had demonstrated blood flow signals in the uterine fibroids before surgery. And, 23 (37.1%) patients showed rapid growth at the final preoperative ultrasound. With respect to the pathological types, 38 (61.3%) patients had detectable endometrial stromal sarcoma, 13 (21.0%) had detectable uterine leiomyosarcoma, only 3 (3.2%) had detectable carcinosarcoma, and 5 (8.1%) patients with leiomyoma had an undetermined malignant potential. Conclusions: The proportion of malignancy is low after using morcellation in patients who undergo laparoscopic myomectomy. Patients with fast-growing uterine fibroids and abnormal ultrasonic tumor blood flow should be considered for malignant potential, and morcellation should be avoided. Key words: Laparoscopic Myomectomy; Morcellation; Sarcoma

A prototype of a new CsI(Tl) telescope, which will be used in the reaction studies of light isotopes with energy of several hundred AMeV, was constructed and tested at the Institute of Modern Physics, Chinese Academy of Sciences. The telescope has a multi-layer structure, and the range information was obtained to improve the particle identification performance. This prototype has seven layers of different thickness. An energy resolution of 5.0% (FWHM) was obtained for one of the layers in a beam test experiment. Positive improvement for the identification of 14O and 15O isotopes was achieved using the range information.

The objective of this dissertation is to study the production-inventory-distribution coordination and performance optimization problems for integrated multi-stage supply chains by adopting the coordination mechanism and framework, primarily the joint consideration of inventory replenishment and the Supply Chain Operations Reference (SCOR) model. The supply chains under study include raw materials, production, transportation and distribution. There are four stages in the supply chain process: the raw material warehouse, the manufacturing/production plant, the finished product warehouse and the distribution centre/retailer. To support coordination among the supply chain parties, both the joint consideration of inventory replenishment and an SCOR model are adopted as the coordination mechanism and the framework of the research. The scope of the work is to study three distinct but inseparable problems by using rigorous analytical approaches: an integrated multi-stage supply chain with constant demand, a SCOR-based analytical coordination model for an integrated supply chain with constant demand and an integrated multi-stage supply chain with time-varying demand. The fundamental goal of this research is to study the effects of minimizing the total operational cost of multi-stage supply chains by adopting different coordination mechanisms and frameworks. The first part of the study considers an integrated production-inventory-distribution planning problem that is faced by a multinational corporation (MNC) that manages a multi-stage supply chain over an infinite time horizon. Based on the supply chain management practices of this company, the joint consideration of inventory replenishment is adopted as the coordination mechanism at the tactical and operational levels. We devise an optimal integer-ratio coordination policy for inventory replenishment across its supply chain. Under the proposed optimal integer-ratio inventory coordination policy, the total operational cost of the supply chain is demonstrated to reach its global minimum after the integrality constraints are relaxed. Numerical examples are presented with a sensitivity analysis. The computational results demonstrate that the difference in the optimal total operational costs between integer and real-number solutions is not significant. In the second part of the research, both the joint consideration of inventory replenishment and an SCOR model are adopted as the coordination mechanism and the framework in an integrated supply chain with constant demand. In the existing literature, it remains a challenge to quantify the coordination effects on supply chain performance after the implementation of such models as Collaborative Planning, Forecasting, Replenishment and SCOR. An analytical coordination model for a supply chain of an MNC is presented. To improve supply chain performance, we study the coordination among the supply chain parties from the strategic to the operational levels. Supply chain management cost which is one of level 1 metrics from the SCOR model is selected to support the MNC to select and refine the SCM strategies. An optimal integer-ratio inventory coordination policy is devised to coordinate the inventory replenishment at the tactical and operational levels. By combining the SCOR model and the integer-ratio inventory coordination policy, a systematic approach is proposed. We focus on the derivation and analysis of the total operational cost of the supply chain based on cost performance metrics across three levels of the SCOR model version 10. The total operational cost is demonstrated to reach its global minimum after the integer constraint is relaxed. The findings reinforce the proposition that the adoption of an analytical coordination model based on the metrics of the SCOR model is promising in terms of its capacity to assist decision makers in improving supply chain performance. Numerical experiments are conducted to demonstrate how to compute the optimal total operational cost in practice. The computational results demonstrate that the total operational cost savings through the SCOR-based analytical coordination model are significant. By extending the results from constant and continuous demand, an integrated multi-stage supply chain with time-varying demand over a finite planning horizon is considered in the last part of the study. With the joint consideration of inventory replenishment coordination mechanism, an optimal production-inventory-distribution policy is devised to minimize the total operational cost. The model is formulated as a mixed-integer nonlinear programming optimization problem. The problem is represented as a weighted directed acyclic graph. The global minimum total operational cost is computed in polynomial time by the developed algorithm. Two numerical examples of a seasonal product and a product over its life cycle are studied to illustrate the results. A sensitivity analysis of the system parameters is conducted to help elucidate the supply chain decision making process. DOCTOR OF PHILOSOPHY (MAE)

This paper introduces complex network into software clone detection and proposes a clone code detection method based on software complex network feature matching. This method has the following properties. It builds a software network model with many added features and codes written with different languages can be detected by a single method. It reduces the space of code comparison, and it searches similar subnetworks to detect clones without knowing any clone codes information. This method can be used in detecting open source code which has been reused in software for security analysis.

With the aim of simulating the harsh temperature condition of space, a thallium-activated cesium iodide crystal (CsI:Tl) detector readout with a PIN photodiode (CsI:Tl(PD)) and with a silicon photomultiplier (CsI:Tl(SiPM)) is investigated over a temperature range from − 40 to 40 °C. With the increase in temperature, the output signal increases by ~ 24% with CsI:Tl(PD) and decreases by ~ 69% with CsI:Tl(SiPM). To reduce the effect of temperature in outer space, a method of bias voltage compensation is adopted for CsI:Tl(SiPM). Our study demonstrates that after correcting the temperature the variation in the analog-to-digital converter’s amplitude is

This paper presents an optimal shape design for a tube bank in turbulent flow to enhance the thermal and hydraulic performance, where the multi-objective genetic algorithm (MOGA) and computational fluid dynamics (CFD) software is coupled in the optimization procedure. Five tubes in the tube bank could have different shapes, and twenty-five polar radii are selected as design variables accordingly. After the optimization, the initial circular tube bank is compared with two optimal solutions with the same pressure drop Δp or the same average heat flux q. Results show that the optimal solution could increase q by 7.6% without additional flow resistance or reduce Δp by 27% without heat transfer deterioration. Furthermore, the best compromise solution is determined by a decision-making approach, TOPSIS (technique for order preference by similarity to an ideal solution), where three different weighting factors are tested. It is found that all the selected solutions are located in the low pressure drop area, which indicates reducing the flow resistance may better improve the comprehensive performance of staggered arrangement tube banks.

In this paper, effect of moisture absorption on high temperature thermal insulation performance of fiber insulation material is studied. Fiber material is stored in 40°C through a long period of time, then spontaneous moisture absorption of fiber material is measured. According this test result, 20% and 40% moisture absorption content gradient are determined. Pore distribution and high temperature thermal insulation property of samples of 20% and 40% moisture absorption and the dry samples are all tested in this study. The internal pore size distribution of fiber insulation material after moisture absorbing has a certain coarsening. Fiber material after moisture absorbing will make its pore size become large. And oxygen acetylene test results showed that: the larger moisture absorption, the more slowly the initial temperature rises. Fiber material after moisture absorbing will make its low temperature thermal insulation performance reduce, but it has little impact of its high temperature thermal insulation performance.

A novel refractive index sensor based on surface plasmon resonance (SPR) is proposed in this paper, which is induced by coating a metal film on the surface of a section of D-shape-polished dual-core photonic crystal fiber (DC-PCF). The mechanism of SPR resonance and sensing principle are discussed theoretically. The sensing characteristics as a function of the polished angle, depth, the material of metal film, coating layer thickness are analyzed comprehensively. A DC-PCF with a 60° polished angle, 58.02 μm polished depth is fabricated with a silver coating layer of 70 nm thickness experimentally, which demonstrates that the refractive index sensitivity can be as high as 3580 nm/RIU in the refractive index range of 1.33–1.43.

A novel single-phase full-color phosphor KSrPO 4 :Dy 3+ was synthesized by a high-temperature solid-state reaction. X-ray powder diffraction analysis confirmed the phase formation of KSrPO 4 :Dy 3+ materials. The photoluminescence excitation and emission spectra and the concentration dependence of the emission intensity of the phosphor were investigated. The results show that the phosphor could be efficiently excited by the near-UV (NUV) light ranging from 340 to 440 nm, thus exhibiting blue (487 nm) and yellow (577 nm) light emissions corresponding to 4 F 9/2 → 6 H 15/2 and 4 F 9/2 → 6 H 13/2 transitions, respectively. The luminescence intensity of KSr 1− x PO 4 : x Dy 3+ phosphor first increased and then decreased with increasing Dy 3+ concentration and reached the maximum intensity at x = 0.05. The calculated color coordinates lie in the blue white region. Thus, the prepared phosphors exhibit great potential for use as single-phase full-color phosphor for NUV white-light-emitting diodes.

Novel single-phase white-light-emitting Sr7Zr(PO4)6:Dy3+ phosphors for light-emitting diode (LED) applications were synthesized by conventional solid-state reactions. The phases and luminescent properties of the obtained Sr7Zr(PO4)6:Dy3+ phosphors were characterized. The results show that the luminescence spectra excited by 350 nm consist of two characteristic blue and yellow bands, corresponding to the 4F9/2 → 6H15/2 and 4F9/2 → 6H13/2 transitions of Dy3+, respectively. When x > 0.02, the concentration quenching effect occurred, and the critical transfer distance (Rc) was ~19.247 A. The energy transfer of the Dy3+ ions is the electric dipole–dipole interaction mechanism. The International Commission on Illumination chromaticity coordinates for Sr7−x Zr(PO4)6:xDy3+ phosphors were located in the white region. The developed phosphor has great potential as a single-component white-light-emitting phosphor for UV-LEDs.

Red phosphors Ca 9 Bi 1- x (PO 4 ) 7 : x Eu 3+ ( x = 0.06, 0.10, 0.20, 0.30, 0.40, 0.50, 0.60, 0.70, 0.80 and 1.00) were synthesized by a conventional solid-state reaction (SSR) route. The X-ray diffraction patterns, photoluminescence spectra, ultraviolet–visible reflection spectroscopy, decay time and the International Commission on Illumination (CIE) chromaticity coordinates of these compounds were characterized and analyzed. The Eu-doped Ca 9 Bi(PO 4 ) 7 phosphors exhibited strong red luminescence which peaks located at 615 nm due to the 5 D 0 → 7 F 2 electric dipole transition of Eu 3+ ions after excitation at 393 nm. Ultraviolet–visible spectra indicated that the band-gap of Ca 9 Bi 0.30 (PO 4 ) 7 :0.70Eu 3+ is larger than that of Ca 9 Bi(PO 4 ) 7 . The results indicate that the phosphor Ca 9 Bi 0.30 (PO 4 ) 7 :0.70Eu 3+ can be a suitable red-emitting phosphor candidate for LEDs.

Background A significant relationship has been reported in which Ki-67/MIB-1 expression is correlated with survival in cervical cancer patients. However, the prognostic value of Ki-67/MIB-1 in cervical cancer is still not well understood. Material/Method A meta-analysis was carried out to explore the prognostic value of Ki-67/MIB-1 on overall survival (OS) and/or disease-free survival (DFS) in cervical cancer. The databases of PubMed, ISI Web of Science, EMBASE, Cochrane Central Register of Controlled Trials, ScienceDirect, and Wiley Online Library were used to identify relevant literature. Results We included 18 studies covering 1344 patients in the meta-analysis. The effect of Ki-67/MIB-1 on OS for pooled random effects HR estimate was 1.63 (95% confidence intervals (CI) 1.09–2.45; P0.05) and the subgroup analysis indicated Ki-67/MIB1 was associated with DFS (HR=3.67, 95% CI 2.65–5.09) in Asians. In the treatment subgroup analysis, no direct value was found among surgery (HR=1.13, 95% CI 0.10–13.53) and RT (HR=1.26, 95% CI 0.71–2.24). Conclusions Our meta-analysis concludes that Ki-67/MIB-1 had a prognostic value for OS in cervical cancer patients. To further evaluate the prognostic role of Ki-67/MIB-1 on DFS, studies with larger numbers of patients are needed to validate our findings.

Mode analysis of liquid hybrid bearing in the spindle system of high-speed roll grinder whose grinding wheel linear velocity is 80 m/s is carried out by means of finite element analysis method, and the vibration vulnerable areas of the liquid hybrid bearing are found out near the static pressure oil cavities and the diversion groove, and the former 6 orders natural frequencies are gained, furthermore, each order vibration mode is mainly presented as torsion deformation. Therefore, in order to avoid resonance vibration, the bearing should keep away from the resonance vibration frequency region in the course of practical working, and its dynamic performance can be enhanced by optimizing the structure or improving the material property of the bearing, thus, theoretical supports for developing the liquid hybrid bearing in the spindle system of high-speed roll grinder are provided.

Background Recently, total pelvic floor reconstruction (TR) has been the treatment of choice for improving urinary incontinence (UI) after radical prostatectomy (RP). However, the superiority of TR with respect to urinary continence recovery following RP remains controversial. This study identified the effect of TR versus nonTR of the pelvic floor on short-term and long-term continence rates after RP. Methods A literature search was performed in November 2017 using the PubMed, Embase, and Web of Science databases. Only comparative research or clinical studies reporting urinary continence outcomes was included in the meta-analysis, and the quality of evidence was evaluated using the 2011 Level of Evidence for therapy research. Results We analyzed ten studies reporting urinary continence rates after RP at one or more postoperative time points (1, 2, 4, 12, 24, and 52 weeks). TR was associated with significantly better urinary continence outcomes at 1 week (OR 2.76, 95% CI 1.58–4.84, P

A tracking system composed of three multi-wires proportional chambers (MWPCs) for the external target facility of the Cooler Storage Ring is reported in this paper. The active areas of the MWPCs are 518 mm × 400 mm, 582 mm × 450 mm, and 710 mm × 500 mm. Each MWPC consists of a series of alternately placed cathode and anode wire planes and can measure position along the directions of −30°, 0°, and 30° relative to horizontal. The construction and operation of the detectors are described, and a method for track reconstruction is introduced. A track-finding efficiency of about 62% and a spatial resolution of 1.21 mm have been achieved. The pion and proton can be identified clearly with the tracking system combined with a time-of-flight system.

In this paper, a versatile time and charge measurement (MQT) board for muon tomography is described in detail. For time measurement, the general-purpose time-to-digital converter (TDC) chip TDC-GP2 is employed, while for charge measurement, digitization plus numerical integration in field programmable gate array is employed. Electronic tests demonstrate that the total 32 channels of two MQT boards have a time resolution of superior than 100 ps, with excellent linearity for time and charge measurement.

The RIBLL2 in-flight separator at IMP, the secondary beam line between two storage rings at the \blue{\uwave{Heavy Ion Research Facility in Lanzhou (HIRFL-CSR)}}, has been commissioned to study the rare-isotope beam (RIB) physics at around 300 MeV/nucleon for the first time, in combination of the external target facility (ETF). The unambiguous particle identification in mass and charge states for $^{18}$O and $^{40}$Ar fragments has been achieved in recent experiments. A full realization of RIBLL2 will open many potentials to address important RIB physics problems at around 300 MeV/nucleon., Comment: 3 pages, 2 figures

Based on the features of fire and explosion accidents in petrochemical wharf storage tank area, the DOW method and fuzzy comprehensive evaluation method were applied to evaluate risk of fire and explosion. First of all, DOW method was employed to evaluate the hazard of fire and explosion of petrochemical wharf storage tank area preliminarily and risk indexes of various tanks were obtained. Then, 5 first-level and 24 second-level indexes were identified by the fuzzy mathematics, in which the entropy weight method was introduced to determine weight vector of arrangement analysis, and applied to an actual risk evaluation for a petrochemical wharf storage tank area to determine fuzzy sets. On the basis of the weighted average method, the risk level is medium. Arranges the second-level indexes, and the main factors affecting the accident were concluded,including the violation rate of labor discipline, characteristics of hazardous materials, fire facilities, safety checks, operation of the security emergency response system and so on.

Model Tao Shi ,Peng Zhang and Fang Cheng School of Chongqing University of Posts and Telecommunications, Chongqing 400065, China shitao12300@163.com Keywords: telecommunications network resources, resource model, object-oriented, virtualization technology, network management system Abstract. In order to manage and utilize telecommunication network resources more effectively, aiming at the shortage of the resource management of telecom network management system, through the study the concept of the shared information data (SID) model in the new generation of telecom operation support system (NGOSS) , according to the characteristics of the telecommunications network resources, telecommunications network resource model with object-oriented approach is proposed and designed. Meanwhile, Combined with telecommunication network business resource model to illustrate the mechanism of telecom network resource by users applications in network management system. Experiments have proved that resource model can provide powerful support for complex network management.

A new power system fault diagnosis model is proposed in this paper and it will be used in the UNIX platform. It includes the Petri net system's structure, software service and hardware integration method. Though technology of Petri net is quite successful, its application to power system fault diagnosis is deficient. According to the UNIX platform, a new power system fault diagnosis model is designed and it takes an example to explain how to use its high performance computing method (or parallel computing method) and UNIX environment to design a new intelligent algorithm with information fusion and multi-data resources in power system fault diagnosis.

In order to determine the main related factors affecting the wharf safety, this paper presents a model using the grey correlation analysis process to give a quantitative analysis about accidents in petrochemical wharf. Based on the statistics of wharf accidents in a petrochemical wharf of Tianjin Port from 2008 to 2012, the study analyzes four main accidents and related causes that take place in a petrochemical wharf. The grey correlation degree of the factors are calculated and analyzed including human factor, no emergency measures, equipment damage, poor management, environmental factor in petrochemical wharf, respectively. The result shows that the main causes of accidents are operation against rules and poor management in petrochemical wharf, and operation against rules is the most important factor. The application of grey correlation analysis gives a quantitative analysis to the degree affected by different factors so that wharf accidents can be avoided by taking effective measures.

As the support of the daily-use ceramic products design by using digital development platform, nowadays advanced digital technology –– 3D print technique can directly design and develop the daily-use ceramic products. The design software illustrates three-dimensional model and convert it to the appropriate number format, then this hi-tech print technology can make the real full scale mock up. Use this digital way to present the daily-use ceramic products, to create a graphic database, and eventually establish a systematic research and development about the daily-use ceramic products design.

This paper focuses on free vibration analysis of corrugated-core sandwich plates (CSP) via a meshfree Galerkin method based on a first-order shear deformation theory (FSDT). A CSP is considered as a composite structure of three members — two face sheets at the top and the bottom, and one corrugated sheet in the middle of the structure. The face sheets are taken as isotropic plates, and the corrugated sheet is approximated by an orthotropic plate that has different elastic properties along the two perpendicular directions. Dynamic equations of the members are given by the meshfree Galerkin method based on the FSDT. After overcoming the difficulty to implement the displacement compatibility conditions among the members, the governing equation for the entire CSP is obtained by superposing the dynamic equations of the members. The meshfree characteristic of the proposed method guarantee that no meshes are used in deriving the dynamic equations, therefore the proposed method is more flexible in studying problems for which remeshing is inevitable with the finite element methods. The approximation of the corrugated sheet with an orthotropic plate also simplifies the analysis without much loss of precision. A few selected examples are studied to demonstrate the accuracy and convergence of the proposed method. The results obtained for these examples are compared with the ANSYS solutions. Good agreement is evident for all cases.

With a large amount of intermittent distributed generation(DG) integrating into active distribution network(ADN), the flexibility requirements during the operation process should be paid more attention. Therefore, a dynamic optimal operation model is built. In this model, the maximization of economic benefits during the production cycle is set as the optimization objective, and the constrains of security and flexibility are considered. Then based on this model, the security, economy and flexibility requirements of power system are satisfied by coordination and interaction of different flexible sources. Finally, a case study is given to illustrate the validity and effectiveness of the models.

LiSr4−x(BO3)3:xSm3+ and LiSr3.985−x(BO3)3:0.015Sm3+, xK+ phosphors were prepared by solid-state reactions. The phases and luminescent properties of the obtained phosphors were characterized. The results demonstrate that the phosphors particles emit an intensive reddish orange light emission under excitation at 403 nm. LiSr4−x(BO3)3:xSm3+ phosphor can be efficiently excited by ultraviolet and blue light, and the emission spectrum consists of three emission peaks at 564, 601 and 647 nm. The introduction of the charge compensator K+ into the LiSr4−x(BO3)3:xSm3+ phosphor matrix promotes the increase of the emission intensity, as well as the decrease of the Eg value. Results suggest that LiSr3.97(BO3)3:0.015Sm3+, 0.015 K+ is a promising orange–red emitting phosphor for UV LED applications.

Study on the thermoelectric effect of electric on vehicle performance problems. Local fuzzy logic control strategy based on, the application of ADVISOR simulation software, The established vehicle model of the hybrid system simulation, the simulation results show that, better improve the vehicle fuel economy and emissions, make the motor work in high load area, high efficiency with low emissions. At the same time system engine, motor, transmission system and battery efficiency can be better maintained.

Word Segmentation is a fundamental problem of the Chinese natural language progressing. Based on the analysis of the state on research and key issues of it .The paper introduces a tree structure statistical method of word frequency, which enables key words to match one another highly-efficiently. by which we can rapidly express texts as the set of high-frequency words,so the classification of texts is conveniently reached.

Umbilical cable is a kind of integrated subsea cable widely used in the exploration and exploitation of oil and gas field. The severe ocean environment makes great challenges to umbilical maintenance and repair work. Damaged umbilical is usually recovered for the regular operation of the offshore production system. Analysis on cables in essence is a two-point boundary problem. The tension load at the mudline must be known first, and then the recovery load and recovery angle on the vessel can be solved by use of catenary equation. The recovery analysis also involves umbilical-soil interaction and becomes more complicated. Calculation methods for recovery load of the exposed and buried umbilical are established and the relationship between the position of touch down point and the recovery load as well as the recovery angle and recovery load are analyzed. The analysis results provide a theoretical reference for offshore on-deck operation.