Fine

摘要： Accurate diagnosis of Pancreatic cysts(PC) is key in the management. The knowledge of indications for surgery, the role of endoscopic ultrasound-guided fine needle aspiration, cyst fluid analysis, imaging, and surveillance of PC are all important in the diagnosis and management of PC. Currently, there are many guidelines for the management of PC. The optimal use of these guidelines with a patient-centered approach helps diagnose early cancer and prevent the spread of cancer.

摘要： The generation of vertical fine structure by inertia-gravity internal waves in a two-dimensional stratified shear flow is investigated. In the linear approximation, the boundary value problem for the amplitude of the vertical velocity of internal waves has complex coefficients, the imaginary part of which is small. The wave frequency and the eigenfunction of the boundary problem for the internal waves are complex (and we show that a weak damping of the wave occurs). The phase shift between the fluctuations of density and vertical velocity differs from π/2;therefore, the wave-induced vertical mass flux is non-zero. It is shown that dispersion curves are cut off in the low-frequency domain due to the influence of critical layers, where the frequency of the wave with the Doppler shift is equal to the inertial one. The Stokes drift velocity is determined in the weakly nonlinear approximation, on the second order in the amplitude of the wave. The vertical component of the Stokes drift velocity is also non-zero and contributes to wave transfer. The summary wave mass flux exceeds the turbulent one and leads to irreversible deformation of the average density profile which can be interpreted like a fine structure generated by the wave. On the shelf, this deformation is more than in deep-water part of the Black Sea at the same amplitude of а wave. The vertical scale of the fine structure of Brunt-V?is?l? frequency, generated by a wave, corresponds to really observed value.

摘要： Autoimmune pancreatitis(AIP)is defined as pancreatitis caused by irregular narrowing of the pancreatic duct accompanied by pancreatic swelling,fibrosis and lymphocyte infiltration,events that are related to autoimmune mechanisms.The 2010 International Consensus Diagnostic Criteria for AIP defined pancreatitis as“type 1”when increased levels of serum IgG4 were present and other organs were involved;lymphoplasmacytic sclerosing pancreatitis was the main histological characteristic.Apart from surgery,endoscopic ultrasonographyguided fine needle aspiration(EUS-FNA)is the only method for the histological diagnosis of AIP;however,this method is difficult.The use of larger-diameter FNA needles and trucut biopsy did not improve the diagnostic performance of EUS-FNA,but it has improved gradually.In this review,we look back at past efforts to improve the diagnostic performance of EUS-FNA and reveal the present state of EUS-FNA for the histological diagnosis of AIP type 1.

摘要： BACKGROUND Establishing a diagnosis of pancreatic cystic lesions(PCLs)preoperatively still remains challenging.Recently,endoscopic ultrasound(EUS)-through-the-needle biopsy(EUS-TTNB)using microforceps in PCLs has been made available.AIM To assess the efficacy and safety of EUS-TTNB in the diagnosis of PCLs.METHODS We retrospectively collected data of patients with PCLs who underwent both EUS-fine-needle aspiration(FNA)for cytology and EUS-TTNB at our institution since 2016.EUS-FNA for cytology was followed by EUS-TTNB in the same session.Evaluation of the cyst location,primary diagnosis,adverse events,and comparison between the cytologic fluid analyses and histopathology was performed.Technical success of EUS-TTNB was defined as visible tissue present after biopsy.Clinical success was defined as the presence of a specimen adequate to make a histologic or cytologic diagnosis.RESULTS A total of 56 patients(mean age 66.9±11.7,53.6%females)with PCLs were enrolled over the study period.The mean cyst size was 28.8 mm(12-85 mm).The EUS-TTNB procedure was technically successful in all patients(100%).The clinical success rate using EUS-TTNB was much higher than standard EUS-FNA,respectively 80.4%(45/56)vs 25%(14/56).Adverse events occurred in 2 patients(3.6%)who developed mild pancreatitis that resolved with medical therapy.Using TTNB specimens,23 of 32 cases(71.9%)with intraductal papillary mucinous neoplasm were further differentiated into gastric type(19 patients)and pancreaticobiliary type(4 patients)based on immunochemical staining.CONCLUSION EUS-TTNB for PCLs was technically feasible and had a favorable safety profile.Furthermore,the diagnostic yield for PCLs was much higher with EUS-TTNB than standard EUS-FNA cytology and fluid carcinoembryonic antigen.EUSTTNB should be considered as an adjunct to EUS-FNA and cytologic analysis in the diagnosis and management of PCLs.

摘要： This paper examines various alternatives for what the fine structure constant might represent. In particular, we look at an alternative where the fine structure constant represents the radius ratio divided by the mass ratio of the electron, versus the proton as newly suggested by Koshy [1], but derived and interpreted here based on Haug atomism (see [2]). This ratio is remarkably close to the fine structure constant, and it is a dimensionless number. We also examine alternatives including the proton mass divided by the Higgs mass, which appears to be another possible candidate for what the fine structure constant might represent.

摘要： Fine blanking parts with sharp corners produce collapse angles in the fine blanking process,and larger collapse angles can affect the parts’ performance and lifetime. In this paper,a fine blanking part with sharp corners was taken as an example to analyze the forming mechanism of the collapse angles by DEFORM 3 D,then studying the influence of the position of the V-ring indenter of die on the collapse angle. It was concluded that the material’s metal flow line was intensive near the blanking clearance;The equivalent stress area of the material was mainly concentrated around the blanking clearance,and then gradually shrinked to joint of part and scrap;the closer the distance L was,and the smaller equivalent stress area was mainly concentrated around the blanking clearance was,and the smaller collapse angle was.

摘要： In this short note we present a possible connection between the proton radius and the proton mass using the fine structure constant. The Hagedorn temperature is related to the energy levels assumed to be required to free the quarks from the proton, where hadronic matter is unstable. We also speculate that there could be a connection between the Hagedorn temperature and the Planck temperature through the fine structure constant. Regarding whether or not there is something to this (or if it is purely a coincidence), we will leave to others and future research to explore. However, we think these possible relationships are worth further investigation.

摘要： Air pollution has been identified as the largest global environmental threat facing the world today, estimated to cause 7 - 10 million deaths worldwide annually (World Health Organisation, 2014, 2016;Yale University, 2018). Trinidad and Tobago, with a per capita GDP of USD$16310 (2019), is the most industrialised of the Caribbean islands, and like the rest of the Caribbean region is also affected by seasonal Sahara dust (PM2.5). Assessment of the air quality was done for over Trinidad’s west coast. Pollution was measured at four stations during March ‘15-May ‘16, representative of rural, urban, mixed background and industrial land uses. Annual mean PM2.5 and PM10 in ambient air exceeded the WHO guidelines for protection of public health (n = 522). PM2.5 and PM10 exceed the WHO (2006) safe limit guidelines (PM2.5 is 10 μg/m3;PM10 is 20 μg/m3) over 70% of the time sampled at urban and industrial sites. Gaseous pollutants found to be in exceedance were CO, NH3, NO2, N2O, C6H6. Nitrogen dioxide and benzene were the most prolific. A collated metric based on measurement of these pollutants yielded a statistically validated algorithm—An Air Pollution Index. The single metric can convey useful and easily understood information on air quality to the regulators and the general public.

摘要： Fine needle aspiration (FNA) is currently the standard of care for sampling pancreatic solid masses by using endoscopic ultrasound (EUS).The accuracy of the technique is reported to be high,especially if coupled with the rapid on site evaluation (ROSE),and it has a high safety profile.However,FNA presents some limitations,such as the small amount of tissue that can be collected and the inability of obtaining a core tissue with intact histological architecture,which is relevant to perform immunohistochemical analysis,molecular profiling and,therefore,targeted therapies.Moreover,the presence of the ROSE by an expert cytopathologist is very important to maximize the diagnostic yield of FNA technique;however,it is not widely available,especially in small centers.Hence,the introduction of EUS fine needle biopsy (FNB) with a new generation of needles,which show a high safety profile too and a satisfying diagnostic accuracy even in the absence of ROSE,could be the key to overcome the limitations of FNA.However,FNB has not yet shown diagnostic superiority over FNA.Considering all the technical aspects of FNA and FNB,the different types of needle currently available,comparisons in term of diagnostic yield,and the different techniques of sampling,a tailored approach should be used in order to determine the needle that is most appropriate for the different specific scenarios.

摘要： Taking the Um7 meandering river complex sandstone reservoir of Bohai Bay C oilfield as an example, the interlayer type is defined according to the interlayer lithology and sedimentary genesis, and the identification mode of different types of interlayer is established, and the interlayer comparison of the whole area is carried out by using this mode. The results show that the interlayer can be further defined as the stable distributed interlayer and the randomly distributed interlayer according to the morphology of the interlayer. The distribution characteristics of the two types of interlayers are characterized by the well-to-well comparison method and the data analysis method, and the three-dimensional characterization is carried out. The results more closely reflect the spatial distribution of the interlayer, but also are closer to the underground real situation.

摘要： 本发明公开了一种基于Coarse2Fine网络的相似问题匹配方法，包括以下步骤：步骤1：运用数据集训练得到对应的Coarse2Fine模型；步骤2：运用Coarse2Fine模型中的BM25模型将待处理语句与数据库中的语句进行粗粒度的相似度匹配，得到数条匹配语句；步骤3：在ESIM网络中提取待处理语句、匹配语句的特征值，将待处理语句的特征值逐一与数条匹配语句的特征值计算差异性值；步骤4：在ESIM网络中提取出差异性值小的匹配语句，作为相似语句的输出结果。本发明解决了单使用ESIM网络匹配导致的太多高分项而无法选择出最佳匹配结果的问题。

摘要： 本实用新型提供了一种基于WI‑FINE&蓝牙的三相导轨式多功能电能表及其系统，属于智能电能表技术领域，基于WI‑FINE&蓝牙的三相导轨式多功能电能表包括为三相导轨式多功能电能表提供电源的电源电路，还包括多块独立的高精度单相电量计量芯片和对单相计量参数进行数据分析计算和电量分析的主控MCU；三相导轨式多功能电能表还包括与主控MCU通信连接的通信电路，所述通信电路包括WI‑FINE&蓝牙通信电路以及RS485通信电路。本实用新型基于WI‑FINE&蓝牙通信，可通过网站、手机APP等途径实现远程控制和抄读实时电力监控数据，相比于传统的预付费电能表，更加先进、方便、简单，为用户带来更便捷的使用，更简单的安装。

摘要： 本发明公开了一种基于fine‑tunning的个性化联合学习框架系统，包括步骤一：在联合学习的主服务器端预收集相关领域数据集进行预训练；步骤二：冻结主服务器端深层次的网络模型参数只训练浅层次的神经网络；步骤三：主服务器将浅层次的模型下发至客户端；步骤四：客户端冻结浅层次的网络参数只训练深层次的神经网络参数。该基于fine‑tunning的个性化联合学习框架系统，通过在联合学习的主服务器端预收集相关领域数据进行预训练，冻结深层的网络模型参数只训练浅层的神经网络，主服务器模型下发至客户端，客户端冻结浅层网络参数只训练深层次的神经网络参数，浅层模型学习到所有客户的公共特征，深层模型学习到局部数据的专有特性，训练得到的个性化模型在本地的泛化性能更好。

摘要： 本发明公开了一种基于YOLOv3检测定位裁剪及fine‑tune的输电线路巡检图像处理方法，针对无人机在输电线路巡检中所采集到的图像或视频，进行输电线路的缺陷检测，比如鸟巢以及绝缘子爆裂等。方法具体包括：利用CycleGAN网络和常见数据扩增方法进行负样本的扩充；采用直方图均衡化、中值滤波进行图像预处理；使用YOLOv3实现目标检测定位，剪裁掉图像中的无关内容，构成训练集；训练基于fine‑tune方法构建的resnet152缺陷识别网络，确定缺陷检测模型。本发明可以降低人工巡检成本，自动检测输电线路上的缺陷，保障国家电力系统的安全运行。