Node

摘要： Residential photovoltaic (PV) systems connected to the grid are used for self-consumption. Any surplus production is fed into the grid and contributes to improving the voltage. Several techniques are developed to model their connection. However, studies on methods of injecting energy production into the Low Voltage (LV) network are nowadays a problem. This paper proposes a mathematical model to determine the current to be injected and calculate each node’s voltage. The current equation is a recurrence relation with an initial condition. This initial condition is for the case of a single PV system connected to the LV grid. The equation can also be written in matrix form. Similarly, the voltage solution is a recurrence relation. It also has an initial condition for the first node. Both mathematical formulae with the proposed initial conditions are consistent and can be used for the determination of the current and voltage of the different nodes in the grid.

摘要： 本文通过重庆有线对vBNG的实际部署,阐述其技术特点、优势以及与传统部署方案的对比和演进路线,以提供一种对现有网络部署的可行的优化方案.

摘要： The energy supply unit of WSN node based on solar cell-powered outdoor environment monitoring needs storage battery for energy buffering,thus resulting in the distribution balance problem among solar battery,storage battery charge and discharge,and load energy consumption power.Based on the analysis of sensor network characteristics and node composition,the overall design of energy supply unit of wireless sensor network node on the basis of self-harvesting solar energy is carried out in this paper.At the same time,the improved circuit structure based on Boost and BUCK structure was designed,the working mode and energy distribution mode of the circuit were analyzed,and the circuit and control flow were comprehensively analyzed.In order to verify the energy distribution,experiments were implemented for test.The results of compensating the conversion efficiency of the power converter show that the energy distribution efficiency is significantly improved.

摘要： Endoscopic submucosal dissection(ESD)represents an organ-preserving alternative to surgical resection of early gastric cancer.However,even with ESD yielding en-bloc resection specimens,there are concerns regarding tumor spread such as with larger lesions,ulcerated lesions,undifferentiated pathology and submucosal invasion.Sentinel node navigational surgery(SNNS)when combined with ESD offers a minimally invasive alternative to the traditional extended gastrectomy and lymphadenectomy if lack of lymph node spread can be confirmed.This would have a clear advantage in terms of potential complications and quality of life.However,SNNS,though useful in other malignancies such as breast cancer and melanoma,may not have a sufficient sensitivity for malignancy and negative predictive value in EGC to justify this as standard practice after ESD.The results of SNNS may improve with greater standardization and more involved dissection,technological innovations and more experience and validation such that the paradigm for post-ESD resection of EGC may change and include SNNS.

摘要： BACKGROUND Pelvic recurrence after rectal cancer surgery is still a significant problem despite the introduction of total mesorectal excision and chemoradiation treatment(CRT),and one of the most common areas of recurrence is in the lateral pelvic lymph nodes.Hence,there is a possible role for lateral pelvic lymph node dissection(LPND)in rectal cancer.AIM To evaluate the short-term outcomes of patients who underwent minimally invasive LPND during rectal cancer surgery.Secondary outcomes were to evaluate for any predictive factors to determine lymph node metastases based on pre-operative scans.METHODS From October 2016 to November 2019,22 patients with stage II or III rectal cancer underwent minimally invasive rectal cancer surgery and LPND.These patients were all discussed at a multidisciplinary tumor board meeting and most of them received neoadjuvant chemoradiation prior to surgery.All patients had radiologically positive lateral pelvic lymph nodes on the initial staging scans,defined as lymph nodes larger than 7 mm in long axis measurement,or abnormal radiological morphology.LPND was only performed on the involved side.RESULTS Majority of the patients were male(18/22,81.8%),with a median age of 65 years(44-81).Eighteen patients completed neoadjuvant CRT pre-operatively.18 patients(81.8%)had unilateral LPND,with the others receiving bilateral surgery.The median number of lateral pelvic lymph nodes harvested was 10(3-22)per pelvic side wall.8 patients(36.4%)had positive metastases identified in the lymph nodes harvested.The median pre-CRT size of these positive lymph nodes was 10 mm.Median length of stay was 7.5 d(3-76),and only 2 patients failed initial removal of their urinary catheter.Complication rates were low,with only 1 lymphocele and 1 anastomotic leak.There was only 1 mortality(4.5%).There have been no recurrences so far.CONCLUSION Chemoradiation is inadequate in completely eradicating lateral wall metastasis and there are still technical limitations in accurately diagnosing metastases in these areas.A pre-CRT lymph node size of≥10 mm is suggestive of metastases.LPND may be performed safely with minimally invasive surgery.

摘要： BACKGROUND The prognostic significance of lymph nodes(LNs)metastases and the optimum number of LN yield in gastroenteropancreatic neuroendocrine tumours(GEP NETs)undergoing curative resection is still debatable.Many studies have demonstrated that cure rate for patients with GEP NETs can be improved by the resection of the primary tumour and regional lymphadenectomy AIM To evaluate the effect of lymph node(LN)status and yield on relapse-free survival(RFS)and overall survival(OS)in patients with resected GEP NETs.METHODS Data on patients who underwent curative resection for GEP NETs between January 2002 and March 2017 were analysed retrospectively.Grade 3 tumours(Ki67>20%)were excluded.Univariate Cox proportional hazard models were computed for RFS and OS and assessed alongside cut-point analysis to distinguish a suitable binary categorisation of total LNs retrieved associated with RFS.RESULTS A total of 217 patients were included in the study.The median age was 59 years(21-97 years)and 51%(n=111)were male.Primary tumour sites were small bowel(42%),pancreas(25%),appendix(18%),rectum(7%),colon(3%),gastric(2%),others(2%).Median follow up times for all patients were 41 mo(95%CI:36-51)and 71 mo(95%CI:63–76)for RFS and OS respectively;50 relapses and 35 deaths were reported.LNs were retrieved in 151 patients.Eight or more LNs were harvested in 106 patients and LN positivity reported in 114 patients.Three or more positive LNs were detected in 62 cases.The result of univariate analysis suggested perineural invasion(P=0.0023),LN positivity(P=0.033),LN retrieval of≥8(P=0.047)and localisation(P=0.0049)have a statistically significant association with shorter RFS,but there was no effect of LN ratio on RFS:P=0.1 or OS:P=0.75.Tumour necrosis(P=0.021)and perineural invasion(P=0.016)were the only two variables significantly associated with worse OS.In the final multivariable analysis,localisation(pancreas HR=27.33,P=0.006,small bowel HR=32.44,P=0.005),and retrieval of≥8 LNs(HR=2.7,P=0.036)were independent prognostic factors for worse RFS.CONCLUSION An outcome-oriented approach to cut-point analysis can suggest a minimum number of adequate LNs to be harvested in patients with GEP NETs undergoing curative surgery.Removal of≥8 LNs is associated with increased risk of relapse,which could be due to high rates of LN positivity at the time of surgery.Given that localisation had a significant association with RFS,a prospective multicentre study is warranted with a clear direction on recommended surgical practice and follow-up guidance for GEP NETs.

摘要： BACKGROUND The reliability of preoperative nodal diagnosis of advanced gastric cancer by multi-detector spiral computed tomography(MDCT)is still unclear.AIM To examine the diagnostic ability of MDCT more precisely by using data on intranodal pathological metastatic patterns.METHODS A total of 108 patients with advanced gastric cancer who underwent MDCT and curative gastrectomy at Kanazawa Medical University Hospital were enrolled in this study.The nodal sizes measured on computed tomography(CT)images were compared with the pathology results.A receiver-operating characteristic curve was constructed,from which the critical value(CV)was calculated by using the data of the first 69 patients retrospectively.By using the CV,sensitivity and specificity were calculated with prospectively collected data from 39 consecutive patients.This enabled a more precise one-to-one correspondence of lymph nodes between CT and pathological examination by using the size data of lymph node mapping.The intranodal pathological metastatic patterns were classified into the following four types:Small nodular,peripheral,large nodular,and diffuse.RESULTS Although all the cases were clinically suspected as having metastasis,81 had lymph node metastasis and 27 had no metastasis.The number of dissected,detected on CT,and metastatic nodes were,4241,897,and 801,respectively.The CV obtained from the receiver-operating characteristic was 7.6 mm for the long axis.The sensitivity was 91.4%and the specificity was 47.3%in the prospective phase.The large nodular and diffuse metastases were easy to diagnose becausemetastatic nodes with a large axis often exhibit these forms.CONCLUSION The ability of MDCT to contribute to a nodal diagnosis of advanced gastric cancer was examined prospectively with precise size data from node mapping,using a CV of 7.6 mm for the long axis that was calculated from the retrospectively collected data.The sensitivity was as high as 91%,and would be improved when referring to the enhanced patterns.However,its specificity was as low as 47%,because most of metastatic nodes in gastric cancer being small in size.The small nodular or peripheral type metastatic nodes were often small and considered difficult to diagnose.

摘要： BACKGROUND Lymph node(LN)metastasis is an important prognostic factor in patients with gastric cancer(GC).However,the evaluation of LN metastasis status in the preoperative setting is not accurate.Therefore,precise preoperative prediction of LN metastasis status is crucial for optimal treatment in patients with GC.AIM To develop a preoperative nomogram for LN metastasis using F-18 fluorodeoxyglucose(F-18 FDG)positron emission tomography/computed tomography(PET/CT)and preoperative laboratory test findings in GC.METHODS In this study,the data of 566 GC patients who underwent preoperative F-18 FDG PET/CT and subsequent surgical resection were analyzed.The LN metastasis prediction model was developed in the training cohort and validated in the internal validation cohort.Routine preoperative laboratory tests,including albumin and carbohydrate antigen(CA)19-9 were performed in all patients.Univariate and multivariable logistic regression was performed to validate the preoperative predictive indicators for LN metastasis.RESULTS Of the 566 patients,232(41%)had confirmed histopathologic LN metastasis.Univariate logistic regression revealed that the tumor location,blood hemoglobin,serum albumin levels,neutrophil to lymphocyte ratio,platelet to lymphocyte ratio,CA 19-9,maximum standardized uptake value(SUVmax)of the primary tumor(T_SUVmax),and SUVmax of LN(N_SUVmax)were significantly associated with LN metastasis.In multivariate analysis,T_SUVmax(OR=1.08;95%CI:1.02–1.15;P=0.011)and N_SUVmax(OR=1.49;95%CI:1.19–1.97;P=0.002)were found to be significant predictive factors for LNmetastasis.The LN metastasis prediction model using T_SUVmax,N_SUVmax,serum albumin,and CA 19-9 yielded an area under the curve(AUC)of 0.733(95%CI:0.683–0.784,P=0.025)in the training cohort and AUC of 0.756(95%CI:0.678–0.833,P<0.001)in the test cohort.CONCLUSION T_SUVmax and N_SUVmax measured by preoperative F-18 FDG PET/CT are independent predictive factors for LN metastasis in GC.

摘要： 物联网在工业领域的应用日益广泛,是引领现代工业发展的重要技术.为实现对工业设备的远程监控,提出一种基于微信公众平台的工业物联网系统.该系统由设备端、服务器和移动终端组成.服务器采用Node平台搭建,利用Node平台异步特性,实现服务器高并发.实验表明,该设计能实现设备端和服务器的HTTP和MQTT协议通信,用户可在微信公众号嵌入的网页上实现对设备端的远程监控.

摘要： 微信小程序开发成为时下热门开发话题,其应用市场正在急剧扩展.BaaS技术已经相当成熟,成为移动应用服务端技术的首选.介绍了使用LeanCloud云引擎技术作为服务端开发微信支付小程序的关键技术,并给出了相应案例.

摘要： 本文分析了B/S结构下的Web的传统开发方式和一些Web相关的开发模型,提出了一种基于MVC的Web控制层的开发模型.介绍了该模型的设计和具体功能及如何利用该模型进行开发.该模型具有开发灵活、易扩展、维护方便等优点,简化了Web控制层的开发过程。

摘要： 本文分析了B/S结构下的Web的传统开发方式和一些Web相关的开发模型,提出了一种基于MVC的Web控制层的开发模型.介绍了该模型的设计和具体功能及如何利用该模型进行开发.该模型具有开发灵活、易扩展、维护方便等优点,简化了Web控制层的开发过程。

摘要： 本文分析了B/S结构下的Web的传统开发方式和一些Web相关的开发模型,提出了一种基于MVC的Web控制层的开发模型.介绍了该模型的设计和具体功能及如何利用该模型进行开发.该模型具有开发灵活、易扩展、维护方便等优点,简化了Web控制层的开发过程。

摘要： 本文分析了B/S结构下的Web的传统开发方式和一些Web相关的开发模型,提出了一种基于MVC的Web控制层的开发模型.介绍了该模型的设计和具体功能及如何利用该模型进行开发.该模型具有开发灵活、易扩展、维护方便等优点,简化了Web控制层的开发过程。

摘要： 本文分析了B/S结构下的Web的传统开发方式和一些Web相关的开发模型,提出了一种基于MVC的Web控制层的开发模型.介绍了该模型的设计和具体功能及如何利用该模型进行开发.该模型具有开发灵活、易扩展、维护方便等优点,简化了Web控制层的开发过程。

摘要： 本申请涉及Node服务器、基于Node服务器实现多Master负载均衡的方法和系统，其中，Node服务器包括kubelet模块、Notify模块、IPVS模块；该系统包括：Master服务器、Node服务器、etcd存储；该方法包括：通过Notify模块感知Master服务器的状态信息变化，并将Master服务器的变动信息发送给IPVS模块，得到刷新的IPVS转发规则表；通过IPVS模块对Kubelet模块与Master服务器之间集群数据流量的负载进行均衡访问。通过Kubelet模块把Node服务器本地系统的状态与本地容器信息上报给Master服务器，并接收和执行来自Master服务器的管控指令。通过本申请，既不需要额外采购昂贵的第三方负载均衡硬件，又能真正实现多Master的高可用性与扩展性。

摘要： 本发明公开了一种基于Node动态生成H5项目路由的方法，包括以下：S1、根据业务需求编写module配置文件；S2、读取route和module配置文件；S3、根据module配置文件匹配route配置文件中对应路由模块，动态生成相应的路由文件；S4、根据动态生成的路由文件进行打包操作；S5、通过匹配的路由模块，过滤筛选所需模块及版本进行复制并输出至源码包。本发明能够快速响定制化需求；针对功能的迭代更新，可以新增该模块的版本进行开发无需另开分支对原有版本进行覆盖；直接通过配置文件，管理打包输出指定模块及该模块的不同版本；输出演示环境可以同时展示各个模块多个版本功能；避免人工增减模块，以此来减少相应的开发和测试资源消耗。

摘要： 本发明涉及计算机技术领域，提供一种静态资源管理方法、Node.js应用、电子设备和存储介质。Node.js应用包括中间件、拦截器、控制器和视图模板引擎，静态资源管理方法包括：中间件响应并传输静态资源请求；拦截器查找缓存中是否存在匹配的静态资源数据，若是则获取静态资源数据并加载至视图模板引擎，若否则传输静态资源请求；控制器接收到静态资源请求时，通过依赖注入的方式获取服务对象，根据服务对象获得静态资源数据，并调用路由处理函数将静态资源数据加载至视图模板引擎；视图模板引擎根据接收到的静态资源数据渲染生成静态页面。本发明能够实现静态资源的个性化管理和灵活维护，提高静态页面的开发效率，尤其适用于对多语言的静态资源的管理。

摘要： 本发明为一种基于程序分析的Node.JS代码片段环境依赖性的自动推断方法：首先，根据libraries.io数据集中的SourceRank构建已知npm包的知识库；其次，使用静态分析，动态分析和关联规则挖掘的组合来发现有关包依赖性的信息，并根据其互相之间的关系建模为相互依赖图，使用图形数据库存储；然后，对于给出的新的Node.JS代码片段，解析目标代码并提取所有导入资源的列表，将其映射回一组可以安装的软件包，再利用一种用于遵循安装顺序的直接依赖和传递依赖性的推理算法，查找到的依赖项进行正确排序，得到最后的返回结果。

摘要： 本发明公开一种基于cluster的Node.js多进程管理方法及系统，所述系统包括：进程启动模块：用于master主进程及各个worker子进程的启动、初始化、数据加载、应用服务启动；心跳检测模块：用于当启动完成后，master主进程开启定时任务，按配置的时间间隔周期性地向各个worker子进程发出心跳检测，关闭僵死的worker子进程，并且重启新的worker子进程；状态查询接口：用于对外提供一个进程状态查询接口；消息接口函数：用于对外提供一个消息发布的接口函数，以向各个worker子进程发送消息，同时，worker子进程对外提供一个消息订阅函数，用以接收master主进程发送来的消息，并通过回调函数的形式将响应消息发送给master主进程。本发明将Node.js多进程应用抽象出一个通用框架，可提高开发效率。

摘要： 一种基于图卷积神经网络和Node2vec的circRNA‑疾病关联关系预测方法，步骤如下：获取circRNA‑疾病关联矩阵；计算circRNA功能相似性、circRNA高斯相互作用谱核相似性、疾病高斯相互作用谱核相似性、疾病语义相似性，构建circRNA集成相似性和疾病集成相似性，生成circRNA‑疾病异构图；稀疏自动编码器对circRNA(疾病)集成相似性进行特征提取和变换后转为64维特征向量，融合circRNA特征向量和疾病特征向量为最终的circRNA‑疾病特征向量；图卷积神经网络对circRNA‑疾病异构图提取节点的局部结构信息；Node2vec方法对circRNA‑疾病异构图提取节点的全局结构信息；将前两步得到的节点信息送入到随机森林分类器中，预测潜在的circRNA‑疾病关联关系。通过计算方法预测与疾病相关的circRNA，节省时间，有助于阐明疾病发病机制，寻找有效治疗方案。

摘要： 本发明提出一种Node.js代码安全检测方法及系统，涉及计算机网络安全领域，对待检测的程序代码及其所使用的第三方库代码进行TypeScript化处理，并将处理后的程序代码打包为单文件形式的程序代码；将打包后的程序代码编译为抽象语法树，并对程序代码中的动态特性进行静态化处理；将静态化处理后的抽象语法树编译为中间表示，标记入口函数、危险函数及无害化处理函数；对标记后的中间表示构建值流图，在图上进行双向污点分析，搜索潜在风险利用路径。本发明弥补了现有检测方法不能检测出控制流和数据流较为复杂中代码的安全风险的缺陷，有效地提高了Node.js代码的安全性。

摘要： 本申请公开了一种Node.js依赖离线管理方法，在服务端搭建用于存储Node.js依赖的本地仓库以及搭建用于接收客户端发送请求的代理。客户端请求安装Node.js依赖，服务端接收客户端发送的请求，检测请求安装的Node.js依赖是否已经存在于本地仓库，若Node.js依赖已存在，则将本地仓库内的Node.js依赖返回给客户端，否则从网络下载相应的Node.js依赖返回给客户端后并保存至本地仓库，当客户端再次请求安装相同的Node.js依赖时，在内网环境下访问本地仓库就可以获取，不需要再次访问网络。解决了现有的Node.js依赖离线管理方法不能将Node.js依赖安装过程中的依赖包或依赖文件都保存至本地的技术问题。

摘要： 本发明提供一种基于二分图投影和node2vec的课程推荐方法。本发明首先获取来自在线教育学生选课数据，并且对该数据进行编码，并用二分图来描述选课信息，通过实际链接情况划分训练集和测试集。获取和课程相关的加权投影矩阵。接着调用node2vec算法模型生成和课程，学生节点有关的最佳网络节点特征表示，通过已经求得的学生节点和课程节点的特征向量，获取链接特征向量，并根据已知的学生‑课程二分图的链接设置标签。并通过逻辑回归模型进行训练和预测，得到较高的推荐准确率。

摘要： 本发明公开了一种代码层监测node.js第三方应用的方法及系统，该方法包括：创建node.js的代理入口文件，所述代理入口文件用于代理所述node.js启动的入口文件；通过所述代理入口文件启动运行在所述node.js上的第三方应用，并通过所述代理入口文件中的日志记录对所述第三方应用的运行代码进行监测；通过上述方法，在通过node.js进行软件开发时，通过该代理入口文件来启动第三方应用，最终实现node.js先加载代理入口文件的代码逻辑，然后再启动第三方应用，从而通过查阅该代理入口文件中的日志记录即可实现对该第三方应用的运行代码的监测，有效实现在基于node.js进行软件开发时，不改变第三方应用源码的前提下对该第三方应用的监测，简单、易实现，省时省力，而且还可降低出错率。