mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Migration to Software-Defined Networks: the Customers' View

Software Defined Networking (SDN) provides a flexible and convenient way to support fine-grained traffic-engineering (TE). Besides, SDN also provides better Quality of Experience (QoE) for customers. However, the policy of the evolution from legacy networks to the SDNs overemphasizes the controllability of the network or TE while ignoring the customers' benefit. Standing in the customers' position, we propose an optimization scheme, named as Optimal Migration Schedule based on Customers' Benefit (OMSB),to produce an optimized migration schedule and maximize the benefit of customers. Not only the quality and quantity of paths availed by migration, but also the number of flows from the customers that can use these multi-paths are taken into consideration for the scheduling. We compare the OMSB with other six migration schemes in terms of the benefit of customers. Our results suggest that the sequence of the migration plays a vital role for customers, especially in the early stages of the network migration to the SDN.
先断阴道后处理子宫旁组织联合骶前间隙入路行保留肛门的后盆腔脏器切除临床疗效

后盆腔联合脏器切除术多针对来源于直肠或妇科生殖系统的肿瘤,因肿瘤同时侵犯直肠及女性生殖器官,为确保肿瘤根治性切除,术中遂将肿瘤及受侵脏器一并切除。当肿瘤体积较大,且与直肠及女性生殖器官融为一体时,如果将子宫阴道与直肠强行分离并分别切除,将会导致肿瘤破裂、癌细胞种植扩散,影响患者的预后生存。如何保证肿瘤切除的完整性及避免术中两侧输尿管和盆壁血管损伤,成为手术操作进程的难题。我们利用先断阴道后处理子宫间隙联合骶前间隙入路行保留肛门后盆腔脏器切除,能有效降低手术难度,提高肿瘤切除率,缩短手术时间,避免损伤输尿管,现报道如下。
A novel approach of deposition for uniform diamond films on circular saw blades

Uniform diamond films are highly desirable for cutting industries, due to their high performance and long lifetime used on cutting tools. Nevertheless, they are difficult to obtain on cutting tools with complicated shapes, greatly limiting the applications of diamond films. In this study, a novel approach of deposition for uniform diamond films is proposed, on circular saw blades made of cemented carbide using reflectors of brass sheets. Diamond films are deposited using hot filament chemical vapor deposition (HFCVD). A novel concave structure of brass sheets is designed and fabricated, improving the distribution of temperature field, and overcoming the disadvantages of the conventional HFCVD systems. This increases the energy efficiency of use without changing the structure and increasing the cost of HFCVD. The grains are refined and the intensities of diamond peaks are strengthened obviously, which is confirmed by scanning electron microscopy and Raman spectra respectively.
长链非编码RNA在妊娠相关疾病中的研究进展

长链非编码 RNA (long non-coding RNA, IncRNA)是一类长度大于200个核苷酸,不具有编码蛋白质潜能的RNA。不同于微小RNA (microRNA.miRNA)等其他非编码 RNA( ncRNA), IncRNA具有相对保守的二级和三级结构,作用方式复杂多样,可在转录、转录后和表观遗传水平调控基因表达,广泛参与机体的生理病理过程。近年来,越来越多的证据表明,IncRNA与多种不良妊娠结局的发生发展密切相关。本文将对IncRNA的特性和作用机制,以及其与子痫前期、复发流产、早产、胎儿生长受限(fetal growth restriction, FGR)等妊娠并发症的关联进行阐述。
Critical Thrust Force Forecasting for Drilling Exit Delamination of Carbon Fibre Reinforced Plastics

Exit delamination is excessive drilling thrust force. Therefore, it is necessary to investigate the critical thrust force which cause exit delamination when carbon fibre reinforced plastics (CRFP) is drilled. According to the linear elastic fracture mechanics, the mechanics of composite material and the classical thin plate bending theory, a common theoretical model of the critical drilling thrust force for CFRP plates is established. Compared with the experimental data of previous studies, the results show that the theoretical values agree well with the experimental values. This model can be used to forecast the critical thrust force for the drilling-induced delamination of CFRP.
Milling Machinability of TiC Particle and TiB Whisker Hybrid Reinforced Titanium Matrix Composites

The milling machinabilities of titanium matrix composites were comprehensively evaluated to provide a theoretical basis for cutting parameter determination. Polycrystalline diamond (PCD) tools with different grain sizes and geometries, and carbide tools with and without coatings were used in the experiments. Milling forces, milling temperatures, tool lifetimes, tool wear, and machined surface integrities were investigated. The PCD tool required a primary cutting force 15% smaller than that of the carbide tool, while the uncoated carbide tool required a primary cutting force 10% higher than that of the TiAlN-coated tool. A cutting force of 300 N per millimeter of the cutting edge (300 N/mm) was measured. This caused excessive tool chipping. The cutting temperature of the PCD tool was 20%—30% lower than that of the carbide tool, while that of the TiAlN-coated tool was 12% lower than that of the uncoated carbide tool. The cutting temperatures produced when using water-based cooling and minimal quantity lubrication (MQL) were reduced by 100 °C and 200 °C, compared with those recorded with dry cutting, respectively. In general, the PCD tool lifetimes were 2—3 times longer than the carbide tool lifetimes. The roughness Ra of the machined surface was less than 0.6 µm,and the depth of the machined surface hardened layer was in the range of 0.15—0.25 mm for all of the PCD tools before a flank wear land of 0.2 mm was reached. The PCD tool with a 0.8 mm tool nose radius, 0° rake angle, 10° flank angle, and grain size of ($30 + 2$) µm exhibited the best cutting performance. For this specific tool, a lifetime of 16 min can be expected.
Study on Al_2O_3 Extraction From Activated Coal Gangue under Different Calcination Atmospheres

Coal gangue was calcinated under air, nitrogen, carbon dioxide, air-hydrogen, and hydrogen atmospheres. The effects of different calcination temperatures and atmospheres on the mineral composition of activated coal gangue were investigated by X-ray diffraction. Moreover, the acid leaching kinetics of aluminum oxide from coal gangue was investigated with sulfuric acid. It showed that the air atmosphere promoted kaolinite decomposition during coal gangue calcination. The hydrogen atmosphere promoted the activation and decomposition of kaolinite at reaction temperatures exceeding 650℃. The carbon dioxide atmosphere eliminated the influence of residual carbon on coal gangue. When the ratio of acid/coal gangue was 1.5 and reaction temperature was 650℃, the sulfuric acid leaching rate under air, air-hydrogen, carbon dioxide,hydrogen and nitrogen atmospheres were 93.66%,90.90%, 84.06%, 81.91% and 77.54% respectively. The acid leaching reaction process conformed to unreacted shrinking core model of particle unchanged, and was controlled by the interfacial chemical reaction. The reaction kinetic equation for the leaching process was l-(l-x)l/3=kt with an apparent activation energy of48.97 kJ/mol.
天津市二次供水智慧管控系统的应用实践

为了提高二次供水的安全保障能力和维护管理效率,天津市建立了二次供水智慧管控系统,由信息采集、网络通讯和监控调度3个子系统组成,具备运行监控、数据查询、压力分析、流量分析、水质分析、调度指挥和热线服务等功能,通过与信息技术的高效融合,实现了高层建筑二次供水系统的智慧化管理,保障了城镇供水“最后一百米”的安全、优质供水,为构建智慧水务探索了新的路径。
新形势下滨海核电厂取排水方案研究

重点介绍了滨海核电厂取排水方案研究的主要内容及其逻辑,分析了海洋生物爆发导致的核电厂取水口堵塞事件及其应对措施,同时结合海洋生态红线制度、环境影响评价、通航条件影响评价、核电标杆电价等新的形势要求,对滨海核电厂取排水方案做出进一步完善。
上海黄浦江水源切换长江青草沙水源过程中水库水质问题及解决方法研究

上海黄浦江水源和长江水源为两大不同水系,长江水源水质优于黄浦江水源,特别是青草沙水库建成后,原水水质有了进一步改善。由于青草沙水库的富营养化,藻类易繁殖,给水厂制水带来一定困难。针对青草沙水库原水水质特点,阐述了青草沙水库切换过程及藻类繁殖季节的水质问题及解决方法。
Solid-State ~(13)C Nuclear Magnetic Resonance Spectroscopic Characterization of Soil Organic Matter Fractions in a Forest Ecosystem Subjected to Prescribed Burning and Thinning

Forest management practices such as prescribed burning and thinning in forest ecosystems may alter the properties of soil organic matter (SOM). In this study, surface soils from field plots in the Bankhead National Forest, Alabama, USA, were used to investigate possible SOM transformations induced by thinning and burning. Elemental analysis and solid-state ~(13)C cross polarization magic angle spinning nuclear magnetic resonance (~(13)C CPMAS NMR) spectroscopy were used to characterize SOM fractions in whole soils, humic substances, and density fractions. Our data revealed that the changes in SOM fractions due to the repeated burning carried out in the forest ecosystem studied were involved mainly with alkyl C, O-alkyl C, and carbohydrate functional groups, implying that most prominent reactions that occurred involved dehydrogenation, de-oxygenation, and decarboxylation. In addition, burning and thinning might have also affected the distribution and composition of free and occluded particulate SOM fractions. The limited structural changes in SOM fractions suggested that low-intensity prescribed fire in the forest ecosystem studied will not create major structural changes in SOM fractions.
Numerical and experimental analysis of AC loss for CFETR CS model coil

The central solenoid (CS) is an important component of China Fusion Engineering Test Reactor, for producing, forming and stabilizing plasma in the superconducting tokamak. It is a complicated work to design and manufacture the large superconducting CS magnet, so it is meaningful to design a central solenoid model coil (CSMC) and analyze its electromagnetic properties in advance. In this paper, the structure, design parameters and magnetic field distribution of the CS model coil are discussed. The peak power of radial and axial turn conductors and time bucket loss are analyzed by using piecewise-linear method. The CSMC AC loss with different Nb3Sn CICCs and AC loss of ITER CS coil are compared. The special electrometric method to measure AC loss of the CS model coil for future reference is presented.
伪造交通事故死亡的法医学分析

随着我国交通事业的迅速发展,交通事故导致的死亡呈上升趋势,伪装交通事故死亡的案件也随之增多。本文通过对7例伪装交通事故案例进行分析,总结出辨别伪装交通事故案件的一些方法,为法医检验鉴定提供一些参考。
Tomography system for measurement of gas properties in combustion flow field

This paper describes a self-designed fiber-coupled tomography system and its application in combustion diagnostics. The tomographic technique, which combines tunable diode laser spectroscopy and algebraic reconstruction technique, enables the simultaneous reconstruction of temperature and gas concentration with both spatial and temporal resolutions. The system measures a maximum diameter of 35 cm in a circular area with a minimum spatial resolution of 1 mm×1 mm and temporal response of up to 1 kHz. Simulations validate the effects of the beam arrangement and discrete grid on reconstruction accuracy, and give the optimal beam arrangements. Experiments are made to demonstrate the tomography method, and systems are constructed in laboratory and on engineering test benches.
甲醇制烃类反应第一个C—C键生成的直接机理

甲醇制烯烃反应(MTO)是从非石油路线出发制取低碳烯烃的重要途径,在工业领域和基础研宄领域都具有重要的研宄价值^虽然MTO过程稳态反应阶段的烃池机理已形成广泛的共识,但 MTO反应中从(:,物种甲醇(或者二甲醚)生成第一个C一C键的反应一直是Q化学中极具挑战性和争议性的课题,长期以来存在着直接机理和间接机理的争议。关于C_C生成的直接机理已经提出20多种反应路径2,由于转化发生在反应的最初始阶段,难以捕获中间物种,一直以来所提出的反应机理缺乏直接实验证据。
Parametric Study on the Behavior of An Innovative Subsurface Tension Leg Platform in Ultra-Deep Water

This study focuses on a new technology of Subsurface Tension Leg Platform (STLP), which utilizes the shallowwater rated well completion equipment and technology for the development of large oil and gas fields in ultra-deep water (UDW). Thus, the STLP concept offers attractive advantages over conventional field development concepts. STLP is basically a pre-installed Subsurface Sea-star Platform (SSP), which supports rigid risers and shallow-water rated well completion equipment. The paper details the results of the parametric study on the behavior of STLP at a water depth of 3000 m. At first, a general description of the STLP configuration and working principle is introduced. Then, the numerical models for the global analysis of the STLP in waves and current are presented. After that, extensive parametric studies are carried out with regarding to SSP/tethers system analysis, global dynamic analysis and riser interference analysis. Critical points are addressed on the mooring pattern and riser arrangement under the influence of ocean current, to ensure that the requirements on SSP stability and riser interference are well satisfied. Finally, conclusions and discussions are made. The results indicate that STLP is a competitive well and riser solution in up to 3000 m water depth for offshore petroleum production.
Concept Design and Coupled Dynamic Response Analysis on 6-MW Spar-Type Floating Offshore Wind Turbine

Tower, Spar platform and mooring system are designed in the project based on a given 6-MW wind turbine. Under wind-induced only, wave-induced only and combined wind and wave induced loads, dynamic response is analyzed for a 6-MW Spar-type floating offshore wind turbine (FOWT) under operating conditions and parked conditions respectively. Comparison with a platform-fixed system (land-based system) of a 6-MW wind turbine is carried out as well. Results demonstrate that the maximal out-of-plane deflection of the blade of a Spar-type system is 3.1% larger than that of a land-based system; the maximum response value of the nacelle acceleration is 215% larger for all the designed load cases being considered; the ultimate tower base fore-aft bending moment of the Spar-type system is 92% larger than that of the land-based system in all of the Design Load Cases (DLCs) being considered; the fluctuations of the mooring tension is mainly wave-induced, and the safety factor of the mooring tension is adequate for the 6-MW FOWT. The results can provide relevant modifications to the initial design for the Spar-type system, the detailed design and model basin test of the 6-MW Spar-type system.
Experimental Study on the Cyclic Behavior of Monopiles in Fine Sandy Beds Under Regular Waves

This paper presents an experimental study on the wave-induced behavior of monopiles. Laboratory experiments were conducted at the constant initial state of the sandy beds in a wave flume with a soil trench. The responses of the pilehead displacement, the pile strain and the pore water pressure on regular waves were investigated. The experimental results show that the monopiles lean along the direction of the wave progression and the inclination increases with the duration of wave actions. The pile-head displacement (consisting of the permanent displacement and cyclic displacement) increases as the wave height increases, especially more significantly for the permanent displacement. The head-fixed pile suffers from larger wave load than that on the head-free pile under the same wave condition. Increasing pile diameter or fixing fins on the monopile is effective in reducing the pore water pressure in the upper part of the bed and the permanent displacement.
国民营养计划(2017-2030年)

营养是人类维持生命、生长发育和健康的重要物质基础,国民营养事关国民素质提高和经济社会发展。近年来,我国人民生活水平不断提高,营养供给能力显著增强,国民营养健康状况明显改善。但仍面临居民营养不足与过剩并存、营养相关疾病多发、营养健康生活方式尚未普及等问题,成为影响国民健康的重要因素。为贯彻落实《“健康中国2030”规划纲要》,提高国民营养健康水平,制定本计划。
Structure-based function prediction of the expanding mollusk tyrosinase family

Tyrosinase (Ty) is a common enzyme found in many different animal groups. In our previous study, genome sequencing revealed that the Ty family is expanded in the Pacific oyster (Crassostrea gigas). Here, we examine the larger number of Ty family members in the Pacific oyster by high-level structure prediction to obtain more information about their function and evolution, especially the unknown role in biomineralization. We verified 12 Ty gene sequences from Crassostrea gigas genome and Pinctada fucata martensii transcriptome. By using phylogenetic analysis of these Tys with functionally known Tys from other molluscan species, eight subgroups were identified (CgTy_s1,CgTy_s2, MolTy_sl, MolTy-s2, MolTy-s3, PinTy-s1, PinTy-s2 and PviTy). Structural data and surface pockets of the dinuclear copper center in the eight subgroups of molluscan Ty were obtained using the latest versions of prediction online servers. Structural comparison with other Ty proteins from the protein databank revealed functionally important residues (H~(A1), H~(A2), H~(A3), H~(B1), H~(B2), H~(B3), Z1-Z9) and their location within these protein structures. The structural and chemical features of these pockets which may related to the substrate binding showed considerable variability among mollusks, which undoubtedly defines Ty substrate binding. Finally, we discuss the potential driving forces of Ty family evolution in mollusks. Based on these observations, we conclude that the Ty family has rapidly evolved as a consequence of substrate adaptation in mollusks.
上肢机器人训练对脑卒中患者认知功能的影响

目的探讨上肢机器人训练对脑卒中患者认知功能的影响。方法采用随机数字表法将60例脑卒中后注意力障碍患者分为对照组(30例)及观察组(30例)。2组患者均给予常规康复训练,观察组患者在此基础上辅以上肢机器人训练。于治疗前、治疗4周后分别采用连线测验(TMT)、听觉事件相关电位(P300)、改良Barthel指数(MBI)对2组患者进行疗效评定。结果治疗后2组患者P300潜伏期、波幅、TMT-A、TMT-B及MBI评分均较治疗前明显改善(均P<0.05),并且治疗后观察组患者P300潜伏期[(368.:29±31.69) ms]、波幅[(3.01 ±0.18) µV]、TMT-A[(90.21±32.75) s]、TMT-B[(253.41±110.45) s]及 MBI 评分[(73.33±7.69)分]亦显著优于对照组水平,组间差异均具有统计学意义(均P<0.05)。结论上肢机器人辅助训练可明显改善脑卒中患者注意力、ADL能力及P300潜伏期、波幅,对提高患者认知功能及生活质量具有重要作用。
Convolutional neural networks for expert recommendation in community question answering

Community Question Answering (CQA) is becoming an increasingly important web service for people to search for expertise and to share their own. With lots of questions being solved, CQA have built a massive, freely accessible knowledge repository, which can provide valuable information for the broader society rather than just satisfy the question askers. It is critically important for CQA services to get high quality answers in order to maximize the benefit of this process. However, people are considered as experts only in their own specialized areas. This paper is concerned with the problem of expert recommendation for a newly posed question, which will reduce the questioner's waiting time and improve the quality of the answer, so as to improve the satisfaction of the whole community. We propose an approach based on convolutional neural networks (CNN) to resolve this issue. Experimental analysis over a large real-world dataset from Stack Overflow demonstrates that our approach achieves a significant improvement over several baseline methods.
前臂头静脉或贵要静脉近180°转位建立高位自体动静脉内瘘

自体动静脉内瘘(autogenou arteriovenous fistula,AVF)是长期血液透析(hemodialysis,HD)患者首选的血管通路。自体AVF优于移植血管搭桥和长期中心静脉插管。一些患者行常规AVF手术后透析多年,由于反复穿刺导致原标准AVF(前臂远端桡动脉与头静脉吻合)因血栓、狭窄或血管瘤等并发症失去功能,或因前臂桡动脉、尺动脉太细,手术不易成功且不能建立有效血流量,患者自身肥胖致前臂脂肪过厚,穿刺时不易成功。当患者远端动脉血流差而远端静脉管腔粗大、通畅时,在这种情况下有必要转位,在转位过程中,将静脉浅表化,既有利于血管穿刺,又有效利用了血管资源。我们施行完成前臂静脉(头静脉或贵要静脉)近180°转位与肱动脉吻合建立非常规高位AVF 20例,效果良好,现报道如下。
Composition of algal pigments in surface freshen layer after ice melt in the central Arctic

Seasonal meltwater input creates a thin freshen layer in surface seawater under ice, which largely shifts the algae assemblages. Our recent observation of photosynthetic pigments in the high Arctic showed that ice bottom and 5 m of seawater under ice contained relatively high concentration of fucoxanthin, while chlorophyll b and lutein were the major diagnostic pigments in ice-water interface and 0 m of seawater under ice. Additionally, a notable change of dominant phytoplankton occurred in the top 5 m of seawater under ice, from chlorophytes-dominated at surface to diatoms-dominated at 5 m depth, which might attribute to the sharp salinity gradient (salinity from 12.5 to 28.1) in the surface seawater under ice. Our results imply that phytoplankton community in surface layer under ice would become more chlorophytes in the future warming Arctic Ocean.
Distribution of reactive aluminum under the influence of mesoscale eddies in the western South China Sea

To understand the distribution of aluminum (Al) under the influence of mesocale eddies in the western South China Sea (SCS), sea level anomaly, geostrophic current, environmental parameters and reactive Al were investigated in the western SCS in August 2013. The highest reactive Al concentration ((180±64) nmol/L) was observed in the surface waters, indicating a substantial atmospheric input. Vertically, the reactive Al decreased from the surface high concentration to the subsurface minima at the depth of chlorophyll a (Chl a) maxima and then increased again with depth at most of the stations. The average concentration of reactive Al in the upper 100 m water column was significantly lower in the cyclonic eddy ((137±6) nmol/L) as compared with that in the noneddy waters ((180±21) nmol/L). By contrast, the average concentrations of Chl a and silicate in the upper 100 m water column were higher in the cyclonic eddy and lower in the anticyclonic eddy. There was a significant negative correlation between the average concentrations of reactive Al and Chl a in the upper 100 m water column. The vertical distribution of reactive Al and the negative correlation between reactive Al and Chl a both suggest that the reactive Al in the upper water column was significantly influenced by biological removal processes. Our results indicate that mesoscale eddies could regulate the distribution of reactive Al by influencing the primary production and phytoplankton community structure in the western SCS.
以意识障碍和四肢瘫痪为主要表现的双侧大脑前动脉供血区脑梗死一例

结合本患者颈动脉血管超声显示动脉内膜粗糙,心脏彩超未见异常,可除外心源性栓塞,但入院18 d复查CT有明显的出血转化,是预后不良的脑梗死。提高对本病的认识,早期积极开通闭塞的血管,挽救缺血的脑组织,最大限度保护脑功能是改善预后的关键。
Methological Quality of Systematic Reviews and Meta-Analyses on Acupuncture for Stroke: A Review of Review

Objective: To assess the methodological quality of systematic reviews and meta-analyses regarding acupuncture intervention for stroke and the primary studies within them. Methods: Two researchers searched PubMed, Cumulative index to Nursing and Allied Health Literature, Embase, ISI Web of Knowledge, Cochrane, Allied and Complementary Medicine, Ovid Medline, Chinese Biomedical Literature Database, China National Knowledge Infrastructure, Wanfang and Traditional Chinese Medical Database to identify systematic reviews and meta-analyses about acupuncture for stroke published from the inception to December 2016. Review characteristics and the criteria for assessing the primary studies within reviews were extracted. The methodological quality of the reviews was assessed using adapted Oxman and Guyatt Scale. The methodological quality of primary studies was also assessed. Results: Thirty-two eligible reviews were identified,15 in English and 17 in Chinese. The English reviews were scored higher than the Chinese reviews (P=0.025), especially in criteria for avoiding bias and the scope of search. All reviews used the quality criteria to evaluate the methodological quality of primary studies, but some criteria were not comprehensive. The primary studies, in particular the Chinese reviews, had problems with randomization, allocation concealment, blinding, dropouts and withdrawals, intent-to-treat analysis and adverse events. Conclusions: Important methodological flaws were found in Chinese systematic reviews and primary studies. It was necessary to improve the methodological quality and reporting quality of both the systematic reviews published in China and primary studies on acupuncture for stroke.
Retraction pocket excision with cartilage grafting as a preventive surgery for cholesteatoma

Aims: The goal of the present study is to summarize our experience on surgical management of retraction pockets(RP)as a preventive tool against cholesteatomas. Methods: Twenty-five ears have been followed up for a mean period of 6.16 ± 4.35 years(from 1 to 17 years). The sample presented a mean age of 47.56 ± 19.11 years(from 16 to 73 years). All patients underwent cartilage graft surgery. Furthermore 10(40%)underwent tympanoplasty(TPL)type I, 14(56%)TPL type II and 1(4%)TPL type V. Results: Eleven ears(44%)showed cholesteatoma: all these cases were stage III according to Charachon staging, and stage IV or Vaccording to Gersdorff classification. Twelve patients(48%)showed erosion of the ossicular chain. Of these, five were associated with cholesteatoma and seven only with retraction. The recurrence rate of cholesteatoma was 12%. None of the patients with a stage II or III RP(according to Gersdorff classification)developed cholesteatoma. The recurrence of RP was 0%. In regards to literature review, seven references were selected. These studies showed a success rate ranging from 79.1% to 88%, while recurrences of RP varied from 6.4% to 13%. Only one study specified a recurrence rate of cholesteatoma of 28%. Conclusions: Surgical treatment of stages II and III RP is an effective tool to prevent cholesteatoma formation. The presence of keratin accumulation and cholesteatoma at the RP(stages IV and V, according to Gersdorff)are the real predictors of poor prognosis.