Fiber cladding dual channel surface plasmon resonance sensor based on S-type fiber

Fiber cladding surface plasmon resonance(SPR)sensors have few structures,and a clad SPR sensor based on S-type fiber is proposed in this paper.This new type of fiber cladding SPR sensor was formed by electrofusing an S-shaped structure on the fiber to couple the light in the fiber core to the cladding.In this paper,the effects of fiber parameters on the performance of the sensor were studied by simulation and experiment.Based on the conclusion that the smaller the core diameter is,the closer the working band of the SPR resonance is to long wavelengths,and that the geometric characteristics mean that a multimode fiber can receive the fiber cladding light from a small core diameter few-mode fiber,a dual channel SPR sensor with a double S-type fiber cascade was proposed.In the refractive index detection range of 1.333–1.385refractive index units(RIU),the resonant working band of channel I is 627.66 nm–759.78 nm,with an average sensitivity of 2540.77 nm/RIU,and the resonant working band of channel II is 518.24 nm–658.2 nm,with an average sensitivity of2691.54 nm/RIU.The processing method for the S-type fiber cladding SPR sensor is simple,effectively solving the problem of this type of SPR sensor structure and the difficult realization of a dual channel.The sensor is expected to be used in the fields of medical treatment and biological analysis.

Clinical efficacy and safety of double-channel anastomosis and tubular gastroesophageal anastomosis in gastrectomy

BACKGROUND With the continuous progress of surgical technology and improvements in medical standards,the treatment of gastric cancer surgery is also evolving.Proximal gastrectomy is a common treatment,but double-channel anastomosis and tubular gastroesophageal anastomosis have attracted much attention in terms of surgical options.Each of these two surgical methods has advantages and disadvantages,so it is particularly important to compare and analyze their clinical efficacy and safety.AIM To compare the surgical safety,clinical efficacy,and safety of double-channel anastomosis and tubular gastroesophageal anastomosis in proximal gastrectomy.METHODS The clinical and follow-up data of 99 patients with proximal gastric cancer who underwent proximal gastrectomy and were admitted to our hospital between January 2018 and September 2023 were included in this retrospective cohort study.According to the different anastomosis methods used,the patients were divided into a double-channel anastomosis group(50 patients)and a tubular gastroesophageal anastomosis group(49 patients).In the double-channel anastomosis,Roux-en-Y anastomosis of the esophagus and jejunum was performed after proximal gastric dissection,and then side-to-side anastomosis was performed between the residual stomach and jejunum to establish an antireflux barrier and reduce postoperative gastroesophageal reflux.In the tubular gastroesophageal anastomosis group,after the proximal end of the stomach was cut,tubular gastroplasty was performed on the distal stump of the stomach and a linear stapler was used to anastomose the posterior wall of the esophagus and the anterior wall of the stomach tube.The main outcome measure was quality of life 1 year after surgery in both groups,and the evaluation criteria were based on the postgastrectomy syndrome assessment scale.The greater the changes in body mass,food intake per meal,meal quality subscale score,and total measures of physical and mental health score,the better the condition;the greater the other indicators,the worse the condition.The secondary outcome measures were intraoperative and postoperative conditions,the incidence of postoperative long-term complications,and changes in nutritional status at 1,3,6,and 12 months after surgery.RESULTS In the double-channel anastomosis cohort,there were 35 males(70%)and 15 females(30%),33(66.0%)were under 65 years of age,and 37(74.0%)had a body mass index ranging from 18 to 25 kg/m2.In the group undergoing tubular gastroesophageal anastomosis,there were eight females(16.3%),21(42.9%)individuals were under the age of 65 years,and 34(69.4%)had a body mass index ranging from 18 to 25 kg/m2.The baseline data did not significantly differ between the two groups(P>0.05 for all),with the exception of age(P=0.021).The duration of hospitalization,number of lymph nodes dissected,intraoperative blood loss,and perioperative complication rate did not differ significantly between the two groups(P>0.05 for all).Patients in the dual-channel anastomosis group scored better on quality of life measures than did those in the tubular gastroesophageal anastomosis group.Specifically,they had lower scores for esophageal reflux[2.8(2.3,4.0)vs 4.8(3.8,5.0),Z=3.489,P<0.001],eating discomfort[2.7(1.7,3.0)vs 3.3(2.7,4.0),Z=3.393,P=0.001],total symptoms[2.3(1.7,2.7)vs 2.5(2.2,2.9),Z=2.243,P=0.025],and other aspects of quality of life.The postoperative symptoms[2.0(1.0,3.0)vs 2.0(2.0,3.0),Z=2.127,P=0.033],meals[2.0(1.0,2.0)vs 2.0(2.0,3.0),Z=3.976,P<0.001],work[1.0(1.0,2.0)vs 2.0(1.0,2.0),Z=2.279,P=0.023],and daily life[1.7(1.3,2.0)vs 2.0(2.0,2.3),Z=3.950,P<0.001]were all better than those of the tubular gastroesophageal anastomosis group.The group that underwent tubular gastroesophageal anastomosis had a superior anal exhaust score[3.0(2.0,4.0)vs 3.5(2.0,5.0),Z=2.345,P=0.019]compared to the dual-channel anastomosis group.Hemoglobin,serum albumin,total serum protein,and the rate at which body mass decreased one year following surgery did not differ significantly between the two groups(P>0.05 for all).CONCLUSION The safety of double-channel anastomosis in proximal gastric cancer surgery is equivalent to that of tubular gastric surgery.Compared with tubular gastric surgery,double-channel anastomosis is a preferred surgical technique for proximal gastric cancer.It offers advantages such as less esophageal reflux and improved quality of life.

A Dual-Channel Secure Transmission Scheme for Internet-Based Networked Control Systems

Two significant issues in Internet-based networked control systems （ INCSs）, transport performance of different protocols and security breach from Internet side, are investigated. First, for improving the performance of data transmission, user datagram protocol （UDP） is adopted as the main stand for controllers and plants using INCSs. Second, a dual-channel secure transmission scheme （DCSTS）based on data transmission characteristics of INCSs is proposed, in which a raw UDP channel and a secure TCP （transmission control protocol） connection making use of SSL/TLS （secure sockets layer/transport layer security） are included. Further, a networked control protocol （NCP） at application layer for supporting DCSTS between the controllers and plants in INCSs is designed, and it also aims at providing a universal communication mechanism for interoperability of devices among the networked control laboratories in Beijing Institute of Technology of China, Central South University of China and Tokyo University of Technology of Japan. By means of a networked single-degree-of-free- dom robot arm, an INCS under the new protocol and security environment is created. Compared with systems such as IPSec or SSL/TLS, which may cause more than 91% network throughput deduction, the new DCSTS protocol may yield results ten times better, being just 5.67%.

Cascaded dual-channel fiber SPR temperature sensor based on liquid and solid encapsulations

In order to control the working wavelength range of the fiber surface plasmon resonance(SPR)temperature sensor and realize the wavelength division multiplexing type multi-channel fiber SPR temperature sensor,by comprehensively investigating the influence of liquids with different thermal-optical coefficients and solid packaging materials on the performance of fiber SPR temperature sensor,a dual-channel fiber SPR temperature sensor based on liquid-solid cascade encapsulation was designed and fabricated.The liquid temperature sensing stage encapsulated in capillary worked in 616.03 nm-639.05 nm band,the solid sensing stage coated with pouring sealant worked in 719.37 nm-825.27 nm band,and the two stages were cascaded to form a fiber dual-channel temperature sensor.The testing results indicated that when the temperature range was 35℃-95℃,the sensitivity of two-stage temperature detection was−0.384 nm/℃and−1.765 nm/℃respectively.The proposed fiber sensor has simple fabrication and excellent performance which can be widely used in various fields of dual-channel temperature measurement and temperature compensation.

Significant improvements in mechanical properties of AA5083 aluminum alloy using dual equal channel lateral extrusion

Dual equal channel lateral extrusion (DECLE), as a severe plastic deformation (SPD) process, was employed forimproving the mechanical properties of AA5083 aluminum alloy. Several experiments were conducted to study the influences of theroute type, namely A and B, and pass number on mechanical properties of the material. The process was conducted up to 6 passeswith decreasing process temperature, specifically from 573 to 473 K. Supplementary experiments involving metallography, hardnessand tensile tests were carried out in order to evaluate the effects of the process variables. The hardness measurements exhibitedreasonably uniform distributions within the product with a maximum increase of 64% via a 6-pass operation. The yield and ultimatestrengths also amended 107% and 46%, respectively. These significant improvements were attributed to the severe shear deformationof grains and decreasing pass temperature, which intensified the grain refinement. TEM images showed an average grain sizereduction from 100 μm for the annealed billet to 200 nm after 6 passes of DECLE. Finally, the experimental findings for routes A andB were compared and discussed and some important conclusions were drawn.

A dual channel perturbation particle filter algorithm based on GPU acceleration

The particle filter（PF） algorithm is one of the most commonly used algorithms for maneuvering target tracking. The traditional PF maps from multi-dimensional information to onedimensional information during particle weight calculation, and the incorrect transmission of information leads to the fact that the particle prediction information does not match the weight information, and its essence is the reduction of the information entropy of the useful information. To solve this problem, a dual channel independent filtering method is proposed based on the idea of equalization mapping. Firstly, the particle prediction performance is described by particle manipulations of different dimensions, and the accuracy of particle prediction is improved. The improvement of particle degradation of this algorithm is analyzed in the aspects of particle weight and effective particle number. Secondly, according to the problem of lack of particle samples, the new particles are generated based on the filtering results, and the particle diversity is increased. Finally, the introduction of the graphics processing unit（GPU） parallel computing the platform, the “channel-level” and “particlelevel” parallel computing the program are designed to accelerate the algorithm. The simulation results show that the algorithm has the advantages of better filtering precision, higher particle efficiency and faster calculation speed compared with the traditional algorithm of the CPU platform.

Dual transfer channels of photo-carriers in 2D/2D/2D sandwich-like ZnIn2S4/g-C_(3)N_(4)/Ti_(3)C_(2) MXene S-scheme/Schottky heterojunction for boosting photocatalytic H2 evolution

Construction of multi-channels of photo-carrier migration in photocatalysts is favor to boost conversion efficiency of solar energy by promoting the charge separation and transfer.Herein,a ternary ZnIn_(2)S_(4)/g-C_(3)N_(4)/Ti_(3)C_(2) MXene hybrid composed of S-scheme junction integrated Schottky-junction was fabricated using a simple hydrothermal approach.All the components(g-C_(3)N_(4),ZnIn_(2)S_(4) and Ti_(3)C_(2) MXene)demonstrated two-dimensional(2D)nanosheets structure,leading to the formation of a 2D/2D/2D sandwich-like structure with intimate large interface for carrier migration.Furthermore,the photogenerated carriers on the g-C_(3)N_(4) possessed dual transfer channels,including one route in S-scheme transfer mode between the g-C_(3)N_(4) and ZnIn_(2)S_(4) and the other route in Schottky-junction between g-C_(3)N_(4) and Ti_(3)C_(2) MXene.Consequently,a highly efficient carrier separation and transport was realized in the ZnIn_(2)S_(4)/g-C_(3)N_(4)/Ti_(3)C_(2) MXene heterojunction.This ternary sample exhibited wide light response from 200 to 1400 nm and excellent photocatalytic H_(2) evolution of 2452.1μmol∙g^(–1)∙h^(–1),which was 200,3,1.5 and 1.6 times of g-C_(3)N_(4),ZnIn_(2)S_(4),ZnIn_(2)S_(4)/Ti_(3)C_(2) MXene and g-C_(3)N_(4)/ZnIn_(2)S_(4) binary composites.This work offers a paradigm for the rational construction of multi-electron pathways to regulate the charge separation and migration via the introduction of dual-junctions in catalytic system.

Mode Selection Strategy of Dual Distribution Channel Based on Revenue Analysis

Within the scope of dual distribution channel(DDC)modes—ME&T-C and M-T&E-C,a game model designed for channel members was proposed.Based on this game model,the game equilibrium under both centralized and decentralized decisionmaking situations was analyzed,the channel members' and overall revenues of two modes under the same decision-making situation are compared,and the influence of demand shift coefficient to the overall and members' revenue was also studied through example analysis.Based on the comparison and analysis of the revenue yielded from the two DDC modes,it's discovered that within a certain hypothetical range,the M-T&E-C mode seems to be a better option for the manufacturer than the ME&T-C mode.Therefore,this discovery can be served as a theoretical reference for manufacturers when choosing the optimal DDC mode in real life.

Dual Channel SIS Receiver of Trao Telescope

We have developed the dual channel receiver with 100GHz and 150GHz band, which is used to make the simultaneous observation with two bands. The SIS mixers are used in both bands. The constructed dewar for receiver has the performance with the vacuum of 10 -8 Torr and the temperature of 4 2K. The receiver noise temperature is 50K (DSB) for 100GHz band and 80K (DSB) for 150GHz band ,respectively. In order to achieve the simultaneous observations, the quasioptical system is precisely designed, and also evaluated by the measurement in the laboratory. We have observed the various sources using this receiver since October 1998. The relative pointing offset between two bands is 3″.

Research on the Mediating Effect of Market Benefit Between Dual Distribution Channel Conflicts and Financial Performance of Garment Enterprises

The paper discussed the impact of dual distribution channel conflicts on financial performance of garment enterprises by multiple regression and mediation effect has been analyzed with market benefit as the mediated variable based on the survey data of Shanghai region. The results show that： first, channel contention, channel areal differences and channel perception differences have a negative effect on financial performance and channel communication has a positive effect on financial performance significantly; second, market benefit has a positive effect on financial performance significantly; third, channel contention, channel areal differences and channel perception differences have a negative effect on market benefit and channel communication has a positive effect on market benefit significantly; forth, market benefit has a partial mediation effect on the influence of channel areal differences and channel communication on financial performance. Therefore, channel areal differences and channel communication are two major aspects among the dual distribution channel conflicts which may have influences on financial benefit of garment enterprises, and clothing company should lay emphasis on the settling of these two matters.

Designing cost-effective network-on-chip by dual-channel access mechanism

A dual-channel access mechanism to overcome the drawback of traditional single-channel access mechanism for network-on-chip （NoC） is proposed. In traditional single-channel access mechanism, every Internet protocol （IP） has only one chan- nel to access the on-chip network. When the network is relatively idle, the injection rate is too small to make good use of the network resource. When the network is relatively busy, the ejection rate is so small that the packets in the network cannot leave immediately, and thus the probability of congestion is increased. In the dual-channel access mechanism, the injection rate of IP and the ejection rate of the network are increased by using two optional channels in network interface （NI） and local port of routers. Therefore, the communication performance is improved. Experimental results show that compared with traditional single-channel access mechanism, the proposed scheme greatly increases the throughput and cuts down the average latency with reasonable area increase.

差异定价和跨渠道退货的双渠道供应链复杂特性研究

考虑决策主体的有限理性行为,构建零售商双渠道差异定价的跨渠道退货价格博弈模型,从系统复杂特性的角度分析供应链系统的局部渐近稳定性和演化行为。根据朱利判据给出系统的稳定域,借助数值仿真刻画系统的动力学行为特征,探究系统状态对价格决策和企业利润的影响,并对失稳系统进行有效控制。研究结果表明,价格调整速度过快容易导致供应链系统经倍周期分岔而陷入混沌状态,存在价格调整的稳定域以确保系统稳定;作为博弈主导者的制造商调整批发价格会影响整个系统的稳定性,而零售商的价格调整仅影响自身稳定;混沌的系统对制造商和零售商都不利,倍周期分岔的系统对制造商有利而对零售商有害,稳定的系统对两者都有利;延迟反馈控制法能有效控制混沌系统;消费者满意度对价格的影响受制于供应链系统状态的制约。

双通道GC-SCD系统测定乙烯和丙烯气体中痕量硫化物

建立了一种采用双通道气相色谱-硫化学发光检测器(GC-SCD)系统分析乙烯、丙烯中痕量硫化物的方法。考察了硫化物在双通道系统的分离效果以及方法的重复性、准确性,并比较了色谱柱的惰性。实验结果表明,该方法可实现硫化氢、羰基硫、甲硫醇、乙硫醇、甲硫醚和乙硫醚6种硫化物的分离和定量,避免了单根色谱柱的烃类干扰问题。该方法的重复性好,含量在0.1~1μmol/mol以下硫化物组分的相对标准偏差在10%以内,回收率在80%~120%之间,灵敏度高,检测限可达30 nmol/mol。

Rapid Framing Mass Storage System on the Internet

Mass storage system is now very important for storing huge volume of data in many application system such as VOD systems, electronic library, scientific computation and so on. Besides the storage device and network devices, the real performance of mass storage system is greatly influenced by the connection way between the host and storage system. Here we propose a new design of mass storage system by promoting the storage devices' functions and involving, them directly into data delivering. It can easily meet the demands both for capacity and I/O bandwidth in those applications, and has better service quality and performance compared with the traditional system in delivering mass data over network.

双传染渠道下银行系统性风险的测度研究

运用改进后的双传染渠道模型,依据2014—2022年42家银行的年报数据,从传染损失、倒闭机构数、银行系统损失和溢出至经济系统损失四个维度测度我国银行系统性风险。结果显示,从传染损失或倒闭机构数量单个维度测量系统性风险并分析其生成机制过于片面。综合银行系统损失和溢出至经济系统损失维度能更全面、准确地测度银行系统性风险。降价抛售、债务违约分别是权益损失、银行破产的主要渠道。杠杆高且银行间贷款占比高的银行更脆弱,溢出风险更大。

考虑购物体验的双渠道供应链稳定性分析

将线下购物体验水平引入由单制造商和双零售商组成的双渠道供应链中,运用非线性动力学理论研究所构建的长期博弈系统的稳定性问题。将整个决策过程分为制造商决策和零售商决策2个阶段,通过分析其对应的特征方程判定各阶段系统的稳定性并给出其稳定域,探究购物体验水平对系统稳定性的影响。研究表明:在斯塔克尔伯格博弈中只有制造商决策系统和零售商决策系统都稳定,整个博弈系统才稳定;两阶段决策系统的稳定性受制于各自的价格调整速度;提高购物体验水平会增大制造商决策系统的稳定域,但会减小零售商决策系统的稳定域。

第三方支付机构与商业银行双渠道风险传染机理研究

后疫情时代,商业银行通过深化与第三方支付机构合作,推动了自身的数字化转型,但也不可避免地带来了系统性风险的隐患。基于中国201家银行资产负债表数据构建银行网络和双渠道风险传染模型,全面地讨论第三方支付机构对银行系统的风险传染问题。研究发现:与单一风险相比,双渠道风险存在1+1>2的放大效应,形成超额损失,更具破坏性:当第三方支付机构渠道和银行同业渠道风险共同作用时,风险在银行系统中的传染会出现非线性变化,造成较大超额损失,显著放大风险的传染效应。

用于精确卫星导航的单通道双频低噪声放大器研制

为了实现多频点、低成本、改善电路结构,设计了一款用于四大卫星导航系统的单通道双频低噪声放大器。该设计采用三级放大器级联实现高增益,分路、合路器采用电容、电感搭建,有利于小型化、节约成本,并通过引入后级带通滤波器提高射频前端的抗干扰能力。实测结果表明,在L1(1.5 GHz~1.6GHz)、L2(1.176 GHz~1.28 GHz)工作频段内,输入反射系数小于-10 dB,增益在40 dB左右,噪声系数小于1.5 dB。该低噪声放大器具有结构简单、性能好、低成本等优点,能较好地应用于GNSS接收设备终端应用系统。

MEMS陀螺双通道数字接口系统设计

针对现有的MEMS陀螺接口系统只能对一个陀螺进行测控导致标定测控效率低下的问题,提出了一种新型的可同时对两个陀螺进行测控的MEMS陀螺双通道接口系统架构,并设计了一套与之对应的MEMS陀螺双通道测控电路,包括前端模拟电路、后端数字系统和人机交互终端。通过设计的人机交互系统对整个系统的全部功能进行了测试,其中扫频、锁相、稳幅、线性度和零偏稳定性等功能均能正常运行,在实际使用测试中相较于单通道接口系统测控效率提升到2倍以上。

山东省国家医保谈判药品 “双通道” 管理政策比较研究

国家医保谈判政策已经进入常态化趋势,为保障谈判药品的使用,国家出台了多项措施,其中“双通道”管理政策极具特色,实践表明该政策有效提高了谈判药品的可及性,降低了患者的负担。本文比较山东省和省内各地市国家医保谈判药品“双通道”管理政策方案,从“双通道”定点医疗机构、定点零售药店、纳入药品种类、药品自付比例和支付方式等方面对比分析各个地市的政策差异和创新性管理办法。山东省及其16个地市的“双通道”管理政策制定实施总体情况较好,充分落实了国家级指导意见,接下来可在单行支付、平衡各地区保障水平等工作上继续推进。