Direct

摘要： In elucidating the laws of matter motion, it is necessary also to take into account the subjective human possibilities to think and construct models. These possibilities are restricted to the framework of Euclidean space. No problems could arise during the development of the laws of classical science. However, it was established later on that in some areas it was rather difficult to describe the motion of the matter in terms of Euclidean models. In these cases, researchers either introduce a space of higher dimensionality, use complex numbers, or make some deformations of our habitual Euclidean space. Those were exactly the cases for which the pseudo-Euclidean, Hilbertian, reciprocal, micro-Euclidean and other spaces were proposed. Humans are able to think only in terms of Euclidean space. So, to provide a correct description of unusual motion of matter, the necessity arises to transform the information into the understandable Euclidean space. The operators suitable for these purposes are Lorentz transformations, Schrodinger equation, the integral transformations of Fourier and Weierstrass, etc. The features of information transformations between different spaces are illustrated with the examples from the areas of X-ray structural analysis and quantum physics.

摘要： 在多媒体时代,3D模型不断涌现,为人们提供了更加优质的图形画面效果。为了进一步提高人们的视觉体验,现利用Direct3D相关技术,设计一款功能完善、实用性强的三维图形几何信息演示系统。首先,根据系统设计原理及模块,完成对系统信息提取模块设计。其次,从几何信息高亮显示、旋转、平移及缩放等交互模块、图元拓扑结构信息展示模块、索引数据模块、顶点数据展示模块、信息交互模块等模块入手,完成对系统信息演示模块设计。最后,探讨了系统功能实现。设计的三维图形几何信息演示系统运行正常、可靠、稳定, 各个功能模块均满足设计相关要求。

摘要： 作为共建“一带一路”倡议下横贯亚欧大陆的集装箱铁路联运班列,“中欧班列”运行8年来取得了令人瞩目的发展。特别是在新冠肺炎疫情蔓延下,为构建人类卫生健康共同体发挥了独特作用。而“绿色”竞争又进一步推升了中欧班列的需求。铁路运输相较空运和海运,二氧化碳排放量可分别减少约95%和50%。在世界主要国家进入以“碳中和”为目标的产业政策大竞争的时代背景下,中欧班列越发成为“一带一路”沿线乃至更多国家和地区的首选。本文试从一个相对独特的角度,对“一带一路”框架下“中日第三方市场合作”项目——“亚欧大陆铁路物流”合作的现状和前景做出评估。

摘要： Self-interacting dark matter(SIDM)is a leading candidate proposed to solve discrepancies between predictions of the prevailing cold dark matter theory and observations of galaxies.Many SIDM models predict the existence of a light force carrier that mediates strong dark matter self-interactions.If the mediator couples to the standard model particles,it could produce characteristic signals in dark matter direct detection experiments.We report searches for signals of SIDM models with a light mediator using the full dataset of the PandaX-II experiment,basing on a total exposure of 132 tonne-days.No significant excess over background is found,and our likelihood analysis leads to a strong upper limit on the dark matter-nucleon coupling strength.We further combine the PandaX-II constraints and those from observations of the light element abundances in the early universe,and show that direct detection and cosmological probes can provide complementary constraints on dark matter models with a light mediator.

摘要： Objectives: To evaluate the prognosis of obstetric complications by parity in a suburban center in Dakar. Patients and Method: We conducted a retrospective and prospective, cross-sectional study that evaluated all women admitted to the Philippe Maguilen Senghor Health Center for the management of their pregnancy (childbirth, abortion, ectopic pregnancy), whether they were primiparous or multiparous. The data for this study covered a 66-month period, from January 1, 2012 to June 30, 2017. Data were entered into our E-perinatal computer database. They were then extracted and analyzed first on Microsoft Excel 2016 and then on SPSS 24, Windows version. Results: Between January 2012 and June 2017, we’ve registered 27,441 patients including 25,905 deliveries, 1415 abortions and 121 ectopic pregnancies. Direct obstetric complications involved 14.1% of our patients. 12.1% multiparous and 17.3% primiparous had at least one direct obstetric complication of World Health Organization (WHO). Antepartum haemorrhage, uterine rupture, ectopic pregnancy, and abortion complications were more common in multipara, whereas prolonged and obstructed labor, preeclampsia, and eclampsia were more common in primiparous women. Postpartum haemorrhage occurred at substantially equal frequencies in both parity groups. We had not found any case of sepsis. Conclusion: Our study confirms that primiparity is a factor that may lead to obstetric complications. However, while some complications were more common in the primiparous, others were exclusive to multiparous when we did not expect it. We also recommend continuing this work by singling out multiparas and large multiparas, in order to better understand the obstetric prognosis linked to parity.

摘要： Cell therapy offers great promises in replacing the neurons lost due to neurodegenerative diseases or injuries.However,a key challenge is the cellular source for transplantation which is often limited by donor availability.Direct reprogramming provides an exciting avenue to generate specialized neuron subtypes in vitro,which have the potential to be used for autologous transplantation,as well as generation of patient-specific disease models in the lab for drug discovery and testing gene therapy.Here we present a detailed review on transcription factors that promote direct reprogramming of specific neuronal subtypes with particular focus on glutamatergic,GABAergic,dopaminergic,sensory and retinal neurons.We will discuss the developmental role of master transcriptional regulators and specification factors for neuronal subtypes,and summarize their use in promoting direct reprogramming into different neuronal subtypes.Furthermore,we will discuss up-and-coming technologies that advance the cell reprogramming field,including the use of computational prediction of reprogramming factors,opportunity of cellular reprogramming using small chemicals and microRNA,as well as the exciting potential for applying direct reprogramming in vivo as a novel approach to promote neuro-regeneration within the body.Finally,we will highlight the clinical potential of direct reprogramming and discuss the hurdles that need to be overcome for clinical translation.

摘要： Direct coaptation of contralateral C7 to the upper trunk could avoid the interposition of nerve grafts. We have successfully shortened the gap and graft lengths, and even achieved direct coaptation. However, direct repair can only be performed in some selected cases, and partial procedures still require autografts, which are the gold standard for repairing neurologic defects. As symptoms often occur after autografting, human acellular nerve allografts have been used to avoid concomitant symptoms. This study investigated the quality of shoulder abduction and elbow flexion following direct repair and acellular allografting to evaluate issues requiring attention for brachial plexus injury repair. Fifty-one brachial plexus injury patients in the surgical database were eligible for this retrospective study. Patients were divided into two groups according to different surgical methods. Direct repair was performed in 27 patients, while acellular nerve allografts were used to bridge the gap between the contralateral C7 nerve root and upper trunk in 24 patients. The length of the harvested contralateral C7 nerve root was measured intraoperatively. Deltoid and biceps muscle strength, and degrees of shoulder abduction and elbow flexion were examined according to the British Medical Research Council scoring system;meaningful recovery was defined as M3–M5. Lengths of anterior and posterior divisions of the contralateral C7 in the direct repair group were 7.64 ± 0.69 mm and 7.55 ± 0.69 mm, respectively, and in the acellular nerve allografts group were 6.46 ± 0.58 mm and 6.43 ± 0.59 mm, respectively. After a minimum of 4-year follow-up, meaningful recoveries of deltoid and biceps muscles in the direct repair group were 88.89% and 85.19%, respectively, while they were 70.83% and 66.67% in the acellular nerve allografts group. Time to C5/C6 reinnervation was shorter in the direct repair group compared with the acellular nerve allografts group. Direct repair facilitated the restoration of shoulder abduction and elbow flexion. Thus, if direct coaptation is not possible, use of acellular nerve allografts is a suitable option. This study was approved by the Medical Ethical Committee of the First Affiliated Hospital of Sun Yat-sen University, China (Application ID:[2017] 290) on November 14, 2017.

摘要： The present work evaluates the feasibility of using the raw material collected from discarded zinc-carbon batteries as heterogeneous catalyst to degrade the dye Indigo Carmine in an aqueous solution. Besides the evident environmental application, this work also presents an economic alternative for the production of new catalysts used to remediate polluted waters. For this, discarded carbon-zinc batteries were gathered, disassembled and their anodic paste collected. After acidic treatment and calcination at 500°C, characterization measurements, i.e. flame atomic absorption spectroscopy (FAAS), nitrogen sorption, X-ray diffraction (XRD) and scanning electron microscopy (SEM), revealed that the so-obtained material consisted mainly of ZnMn2O4. This material acts as a heterogeneous catalyst in a Fenton-like process that degrades the dye Indigo Carmine in water. That is probably due to the presence of Mn(III) (manganese in the +3 oxidation state) in this material that triggers the decomposition of hydrogen peroxide (H2O2) to yield hydroxyl radicals (HO·). Moreover, direct infusion electrospray ionization coupled to high resolution mass spectrometry (ESI-HRMS) was employed to characterize the main by-products resulting from such degradation process. These initial results thus indicate that raw materials from waste batteries can therefore be potentially employed as efficient Fenton-like catalysts to degrade organic pollutants in an aqueous solution.

摘要： Short Retraction Notice? The paper does not meet the standards of "Advances in Pure Mathematics".? This article has been retracted to straighten the academic record. In making this decision the Editorial Board follows COPE's Retraction Guidelines. The aim is to promote the circulation of scientific research by offering an ideal research publication platform with due consideration of internationally accepted standards on publication ethics. The Editorial Board would like to extend its sincere apologies for any inconvenience this retraction may have caused.? Editor guiding this retraction: Editorial Board (EIC of APM).? Please see the article page for more details. The full retraction notice in PDF is preceding the original paper which is marked "RETRACTED".

摘要： BACKGROUND Gastrointestinal cancer(GICA)is associated with a higher incidence of venous thromboembolism(VTE)compared to other solid tumors,moreover,recurrent VTE and major bleeding(MB)complications during anticoagulation treatment have an associated increase rate.GICA-VTE remains a challenging clinical scenario with MB concerns for utilization of direct oral anticoagulants(DOAC),especially with active cancer therapies.AIM To evaluate patient risk factors,effectiveness(VTE)and safety(MB)of DOACs and low molecular weight heparin(LMWH)in patients with active GICA-VTE.METHODS A retrospective chart review of patients receiving DOACs and LMWH with GICA and symptomatic or incidental VTE treated at comprehensive cancer center from November 2013 to February 2017 was performed.Inclusion criteria included active GI cancer diagnosed at any stage or treatment+/-6 mo of VTE diagnosis,whom were prescribed 6 mo or more of DOACs or LMWH.The Chi-squared test was used for overall and the Fisher exact test for pairwise comparisons of the proportions of patients experiencing recurrent VTE and MB events.Odds ratios were used to compare the relative odds of the occurrence of the outcome given exposure to the risk factor.RESULTS A total of 144 patients were prescribed anticoagulation,in which 106 fulfilled inclusion criteria apixaban(27.3%),rivaroxaban(34.9%)and enoxaparin(37.7%),and 38 were excluded.Patients median age was 66.5 years at GICA diagnosis and 67 years at CAVTE event,with 62%males,80%Caucasian,70%stage IV,pancreatic cancer(40.5%),30%Khorana Score(≥3 points),and 43.5%on active chemotherapy.Sixty-four percent of patients completed anticoagulation therapy(range 1 to 43 mo).Recurrent VTE at 6 mo was noted in 7.5%(n=3),6.8%(n=2)and 2.7%(n=1)of patients on enoxaparin,apixaban and rivaroxaban,respectively(all P=NS).MB at 6 mo were 5%(n=2)for enoxaparin,6.8%(n=2)for apixaban and 21.6%(n=8)for rivaroxaban(overall P=0.048;vs LMWH P=0.0423;all other P=NS).Significant predictors of a primary or secondary outcome for all anticoagulation therapies included:Active systemic treatment(OR=5.1,95%CI:1.3-19.3),high Khorana Score[≥3 points](OR=5.5,95%CI:1.7-17.1),active smoker(OR=6.7,95%CI:2.1-21.0),pancreatic cancer(OR=6.8,95%CI:1.9-23.2),and stage IV disease(OR=9.9,95%CI:1.2-79.1).CONCLUSION Rivaroxaban compared to apixaban and enoxaparin had a significantly higher risk of MB on GICA-VTE patients with equivocal efficacy.

摘要： 本发明公开了一种基于Direct3D共享纹理的交互方法及系统，所述交互系统包括独立运行的客户端渲染组件和注入到游戏进程中的图像绘制与控制模块；所述客户端渲染组件包括用于将客户端可视区域内容渲染到共享纹理中的渲染模块、用于接收并解析从游戏客户端传送到客户端的操作控制命令的远程操作解析模块、用于将接收到的操作控制命令转换成客户端操作的操作执行模块、用于将图像绘制与控制模块注入到游戏进程中的注入模块。本发明还公开了所述交互方法基于交互系统实现了无需切换窗口就能操作客户端的功能，提升了游戏用户之间交流互动的体验。

摘要： 提供了一种用于无线通信的方法、设备和计算机程序产品。所述设备确定资源池中的K个子集。每一子集包括K个栅格单元。此外，每一栅格单元包括至少K个子单元。所述设备选择资源池中的K个子集中的一个子集。此外，所述设备采用所选子集中的K个子单元传输消息。

摘要： 本发明公开了一种在安卓WiFi‑Direct连接中获取对等设备IP地址的方法及设备，该方法包括以下步骤：与对等设备建立WiFi‑Direct连接；请求获取对等网络组信息，依据对等网络组信息确定对等设备相应的MAC地址；依据所述MAC地址及表示点对点连接的关键词检索ARP节点地址缓存表，确定对等设备相应的IP地址。该方法不改动Android原生WiFi‑Direct框架，通过对等设备的MAC地址及表示点对点连接的关键词检索ARP节点地址缓存表，直接获取对等设备的IP地址；且不依赖于对等设备，无需分配设备的角色；方法简单有效，在WiFi‑Direct连接状态下，可以保证能够获取到对等设备的IP地址。

摘要： 本发明公开了一种基于WI‑FI DIRECT的移动自组织网络恢复方法，解决设备间无线网络断开后修复时间长以及设备组网过程中的主从冲突问题，增强了无线网络自组织的可靠性与稳定性；网络中设备采用Wi‑Fi Direct进行连接，每台设备上均备份有网络重组参数，在网络首次组成时便会固定并记录在每台设备中，通过设备的重启时间以及扫描顺序决定主从服务器分配，依次连接完成网络恢复。

摘要： 一种基于Wi‑Fi Direct(WFD)技术的D2D链路上的数据转发协议，该协议是基于WFD和D2D通信技术，属于无线通信技术领域。针对蜂窝业务恶化和Wi‑Fi覆盖不足的灾难地区，利用WFD中的服务发现功能，开发一种高效的数据转发协议，能够通过多跳D2D通信将数据推送到云端。协议解决了标准WFD模式中不能跨组通信的技术难点和传统通信依赖基础网络架构的不便利。本发明协议允许设备借助其他互联网连接设备作为跳板将数据发送到云端，实现了无基础架构的远程通信，为灾难事件的搜索和救援提供便利。

摘要： 本发明提供一种用于纳米孔测序的Direct RNA混Barcode文库构建方法，包括：合成独特的RNA Barcode RTA接头，连接接头后将mRNA反转录为cDNA，混样后连接ONT测序接头。该方法可以实现多样本混池Direct RNA测序，直接对原始RNA分子进行测序，可以克服RT和PCR bias。Direct RNA‑seq还可以产生较长的reads，通常覆盖转录本的全长。该方法可以准确地量化转录本，以动态范围分析差异基因表达，同时可以准确鉴定转录本的结构和边界，包括剪接产物，最重要的是可以以单碱基分辨率鉴定RNA修饰的类型。

摘要： 本发明公开了一种基于Direct算法和少量样本更新的结构混合可靠性分析方法。首先，基于Direct优化算法，设置优化目标，对样本进行粗抽样，然后分别在安全域和不安全域，基于欧几里得距离的自适应选点规则和优化算法，不断采用自适应策略选取少量样本点更新样本集，并使用支持向量回归拟合近似功能函数，以内积核函数代替向高维空间的非线性映射，增强响应面方法的非线性适应性，在此基础上进行蒙特卡罗模拟，作结构可靠性分析。本发明在结构可靠性分析中有很好的通用性，能适应各类非线性问题，扩展了Direct优化算法、支持向量机机器学习方法在结构可靠性分析领域的适用范围，有重要的理论和工程意义。

摘要： 本发明公开了一种基于Direct优化和双样本点更新的可靠性分析方法。本发明基于Direct优化算法，设置优化目标，对样本进行初抽样，然后分别在安全域和不安全域，基于欧几里得距离的自适应选点规则，不断采用自适应策略选取2个样本点更新样本集，并使用支持向量回归拟合近似功能函数，以内积核函数代替向高维空间的非线性映射，增强响应面方法的非线性适应性，在此基础上进行蒙特卡罗模拟，作结构可靠性分析。本发明在结构可靠性分析中有很好的通用性，能适应各类非线性问题，扩展了Direct优化算法、支持向量机机器学习方法在结构可靠性分析领域的适用范围，有重要的理论和工程意义。

摘要： 本发明公开了一种基于Direct算法抽样和支持向量机的结构可靠性分析方法。群智能优化算法、Monte Carlo方法、拟蒙特卡洛方法抽样所产生的样本有较高的随机性或仅要求样本的均匀分布，不一定是高效的样本构造方式。本发明取三者之优点，以Direct优化算法构造候选样本，设置优化目标函数，筛选重要样本形成训练集。采用支持向量回归近似功能函数，以内积核函数代替向高维空间的非线性映射，增强响应面方法的非线性适应性，在此基础上进行蒙特卡罗模拟，作结构可靠性分析。本发明在结构可靠性分析中通用性强，能适应各类非线性问题，扩展了支持向量机这种高效、易实现的回归方法在结构可靠性分析领域的适用范围。

摘要： 本发明公开一种基于网络编码的WiFi direct多跳移动设备文件分享方法和系统，其中方法包括：信源设备选择分享的数据对其进行分片网络编码操作；信源设备等待其他移动设备的问答；移动设备成功接收到数据后向其它移动设备发送重新编码后的数据包；移动设备接收到一定量线性无关的数据片后便可解码得到原始数据。本发明利用模式切换策略，能够节省设备不停切换造成的延时，从而提升了系统中数据的分发效率；通过使用中间节点主动再编码策略，增强了数据包的独立性，且利用空闲时间来减少系统延迟，使得系统的整体性能得以提高；本发明具有数据传输稳定、数据分享速率高的优点。