Patch

摘要： Scientists have discovered marine animals living on plastic debris in an area of the open ocean dub bed"the Great Pacific Garbage Patch".Many of the creatures are coastal species,living miles from their usual habitats,on a patch halfway between the coast of California and Hawaii.Plants and animals,including anemones,tiny marine bugs,molluscs and crabs,were found on 90%of the debris.

摘要： 美国新闻网站Patch于2007年由美国在线CEO蒂姆·阿姆斯特朗创立,经过调整市场定位、削减人员、扩大服务范围等一系列改革举措后,现在成为美国在线旗下营收效益最好的重要业务之一.在当前各类新闻媒体生存环境面临巨大挑战的阶段,作为一个起死回生还能创收的规模中等的本地新闻网站,其运营的成功之道有许多可借鉴之处.本文从风格地位、内容生成、盈利模式等方面进行展开分析,探究美国新闻网站Patch的成功之道.

摘要： This paper proposes a new constructive texture synthesis steganographic scheme by compressing original secret messages.First,we divide the original message into multiple bit blocks,which are transferred to decimal values and compressed into small decimal values by recording their interval sign characters.Then,a candidate pattern is generated by combining the given source pattern and boundary extension algorithm.Furthermore,we segment the candidate pattern into multiple candidate patches and use affine transformation algorithm to locate secret positions on a blank canvas,which are used to hide the sign characters by mapping the candidate patches.Finally,we select the candidate patches with minimal mean square error to represent secret bits to generate stego image by image quilting.Extensive experiments demonstrate that compared with existing texture steganographic methods,our method has a better visual quality,higher embedding capacity and security performance,while maintaining strong anti-steganalysis capability.

摘要： The proximal esophagus is rarely examined,and its inspection is often inadequate.Optical chromoendoscopy techniques such as narrow band imaging improve the detection rate of inlet patches in the proximal esophagus,a region in which their prevalence is likely underestimated.Various studies have reported correlations between these esophageal marks with different issues such as Barrett’s esophagus,but these findings remain controversial.Conflicting reports complicate the process of interpreting the clinical features of esophageal inlet patches and underestimate their importance.Unfortunately,the limited clinical data and statistical analyses make reaching any conclusions difficult.It is hypothesized that inlet patches are correlated with various esophageal and extraesophageal symptoms,diagnoses and the personalized therapeutic management of patients with inlet patches as well as the differential diagnosis for premalignant lesions or early cancers.Due to its potential underdiagnosis,there are no consensus guidelines for the management and follow up of inlet patches.This review focuses on questions that were raised from published literature on esophageal inlet patches in adults.

摘要： Background: The perforation of peptic ulcer is a common and serious life threatening surgical emergency. Up-till now no consensus was reached regarding the best practice in management of perforated peptic ulcer. The aim of this study is to evaluate and compare between both management strategies of perforated peptic ulcer;performing simple closure of the perforation with an omental patch then H. pylori eradication and inhibition of acid secretion using long time proton pump inhibitors versus performing definitive repair of perforated peptic ulcer (closure of the perforation with an omental patch, truncal vagotomy and gastrojejunostomy to discover a proper management strategy of perforated peptic ulcer. Patients and Methods: In the current study we included 30 patients which were divided into 2 groups: group 1 included 15 patients where we managed them by simple closure of the perforation with an omental patch then H. pylori eradication and inhibition of acid secretion using long time proton pump inhibitors and group 2 included 15 patients where we performed closure of the perforation with an omental patch, truncal vagotomy and gastrojejunostomy. Results: We found that younger patient underwent vagotomy and gastro-jejunostomy technique (p Conclusions: Peptic ulcer perforation could be safely managed by primary closure and covering by omentum in addition to medical treatment of H. pylori infection and inhibition of acid secretion especially in old patients with comorbid condition who presented late or with shock.

摘要： This paper represents parallel notch, H-shape slot loaded single layer patch antenna in X, and Ku bands for wideband applications. The design has made on low-cost material of Rogers R03003 substrate having dielectric constant of 3.0 with thickness of 1.6.0 mm. The proposed scheme and probe feeding technique provide designed antenna to operate in two different frequencies range in X and Ku band (10.60 GHz to 15.91 GHz). The antenna resonates at 11.37 GHz for X band and another three resonates at 12.13 GHz, 13.14 GHz and 14.66 GHz for Ku band with maximum gain of 9.20 dBi respectively. The simulation results have been obtained 40.01% impedance bandwidth with return loss (-10 dB) or . The proposed antenna is simple in structure compared to the regular single layer patch antennas. It is highly suitable for satellite and RADAR communications system. Designing and simulation of this antenna have been done by IE3D software version 12.0, which is based on MOM method.

摘要： In this paper, the resonance and radiation characteristics of patch antennas fabricated with two different types of dielectric substrates have been investigated and compared at GSM 1800 MHz band. At first, the above-stated characteristics of a patch antenna loaded with conventional plastic substrate have been investigated. Later a high permittivity dielectric material (barium titanate) has been used as the antenna substrate. The main goal here is to reduce the antenna size with a high permittivity dielectric material and then to compare its resonance and radiation performance with the earlier low permittivity substrate loaded prototype. It is found that with the use of high permittivity substrate the antenna volume gets smaller (about 6% of the plastic substrate prototype) although the gain decreases by around 2.5 dB.

摘要： Currently, communication system requires multiband small antennas for 5G mobile applications. Driven this motivation, this paper proposes a multiband patch antenna for Wi-Fi, WiMAX and 5G applications. The proposed antenna can effectively operate at 2.4 GHz as Wi-Fi, 7.8 GHz as WiMAX and 33.5 GHz as 5G communication purposes. The proposed antenna arrays have given directional radiation patterns, very small voltage standing wave ratio, high gain (VSWR) and directivity for each aforementioned systems operating frequency. This antenna is made for multiband purpose which can be effective for not only Wi-Fi and WiMAX but also 5G applications.

摘要： Microstrip patch antenna (MPA) is widely implemented in different communication systems. One of the main disadvantages of MPA which limits its applications is its narrow bandwidth. In this paper I enhanced the bandwidth of MPA by inserting multiple slots in its ground plane. I used FR-4 substrate to design this antenna. The dimensions of this antenna are 59 mm and 79 mm. The dielectric constant is 4.4 and the height is 1.6 mm. I inserted up to 15 slots in ground plane with 1mm width. The spacing between slots is 3 mm. I investigated two designs. In the first design, slots were arranged in parallel to the feeding line. In the second one, slots were arranged horizontally to the feeding line. The main objective of this paper is to design and simulate MPA suitable for wide number of applications. Antenna bandwidth improvement is 18%. All the simulations were obtained by using HFSS simulator.

摘要： Background: Women who had caesarean section (CS) with spinal anaesthesia had more chances to develop low back pain. Controlled studies evaluating the prevention of back pain after neuraxial anaesthesia involved mostly the use of an anti-inflammatory medication or steroid, given epidurally or as part of the intradermal injectate. The purpose of this study is to determine the effect of topical Nonsteroidal Anti-inflammatory drugs (NSAIDS) patch on decreasing the incidence of post-operative backache following spinal anaesthesia for caesarean section. Patients and methods: One hundred thirty parturients aged 19 - 40 years, American society of Anaesthesiology class I & II scheduled for elective caesarean section with spinal anaesthesia were divided randomly into two equal Groups (65 patients each): ketoprofen group (TDK) received 30 mg ketoprofen transdermal patch at site of puncture for 24 hours and control group (TDC) received a placebo transdermal patch at site of puncture for 24 hours. In the Postoperative period 24 hours after the spinal procedure, the transdermal patch was removed in both groups then symptoms of back pain have been determined by visual numerical scale (VNS). Results: regard incidence of occurrence and severity of back pain (VNS > 3) the results showed that the back pain was less in the TDK group than in the TDC group at 24 hours post spinal interval (4.6% vs 15.4%) respectively. On the other hand there was no statistical significant difference at 48 hours and 2 weeks post spinal interval. Conclusion: Prophylactic application of topical NSAIDS patch may reduce the incidence and the severity of short term backache after spinal anaesthesia in CS with negligible complications.

摘要： 在流式媒体应用中，流调度算法通过降低系统延迟等策略显著提高了系统服务能力。该文提出一种选择性PeriodPatch流调度算法，该算法在PeriodPatch和PeriodPatch算法的 基础上，引入若干提高系统性能的策略。为评价选择性PeriodPatch算法的性能，该文通过 仿真实验，比较了选择性PeriodPatch算法与Patching和PeriodPatch算法的性能，实验证明，选择性PeriodPatch算法优于另两种算法。

摘要： 在流式媒体应用中，流调度算法通过降低系统延迟等策略显著提高了系统服务能力。该文提出一种选择性PeriodPatch流调度算法，该算法在PeriodPatch和PeriodPatch算法的 基础上，引入若干提高系统性能的策略。为评价选择性PeriodPatch算法的性能，该文通过 仿真实验，比较了选择性PeriodPatch算法与Patching和PeriodPatch算法的性能，实验证明，选择性PeriodPatch算法优于另两种算法。

摘要： 在流式媒体应用中，流调度算法通过降低系统延迟等策略显著提高了系统服务能力。该文提出一种选择性PeriodPatch流调度算法，该算法在PeriodPatch和PeriodPatch算法的 基础上，引入若干提高系统性能的策略。为评价选择性PeriodPatch算法的性能，该文通过 仿真实验，比较了选择性PeriodPatch算法与Patching和PeriodPatch算法的性能，实验证明，选择性PeriodPatch算法优于另两种算法。

摘要： 在流式媒体应用中，流调度算法通过降低系统延迟等策略显著提高了系统服务能力。该文提出一种选择性PeriodPatch流调度算法，该算法在PeriodPatch和PeriodPatch算法的 基础上，引入若干提高系统性能的策略。为评价选择性PeriodPatch算法的性能，该文通过 仿真实验，比较了选择性PeriodPatch算法与Patching和PeriodPatch算法的性能，实验证明，选择性PeriodPatch算法优于另两种算法。

摘要： 在流式媒体应用中，流调度算法通过降低系统延迟等策略显著提高了系统服务能力。该文提出一种选择性PeriodPatch流调度算法，该算法在PeriodPatch和PeriodPatch算法的 基础上，引入若干提高系统性能的策略。为评价选择性PeriodPatch算法的性能，该文通过 仿真实验，比较了选择性PeriodPatch算法与Patching和PeriodPatch算法的性能，实验证明，选择性PeriodPatch算法优于另两种算法。

摘要： 在流式媒体应用中，流调度算法通过降低系统延迟等策略显著提高了系统服务能力。该文提出一种选择性PeriodPatch流调度算法，该算法在PeriodPatch和PeriodPatch算法的 基础上，引入若干提高系统性能的策略。为评价选择性PeriodPatch算法的性能，该文通过 仿真实验，比较了选择性PeriodPatch算法与Patching和PeriodPatch算法的性能，实验证明，选择性PeriodPatch算法优于另两种算法。

摘要： 本发明涉航空件加工领域，具体是一种用于航空结构件曲面群孔加工的PATCH设计方法，包括如下步骤：采集曲面点位数据；根据点位数据拟合插值曲线；在各方向上分别用三次样条曲线对离散点数据拟合离散点位数据，并求解插值曲线的方程；计算离散点沿着两个方向的切矢，叉乘求解离散点的法矢，由此得到整张曲面的法矢信息；以钻孔孔位的法矢角度偏差为约束条件，在经向与纬向两个方向上，分别依次迭代计算钻孔矩阵单元PATCH尺寸大小。本方法在自由曲面高数量级群孔加工过程中，匹配了曲面几何特征，控制了孔位法矢偏差，实现了排钻在自由曲面上高数量级的批量快速制孔，能够提高制孔效率，保证群孔加工质量。

摘要： 本发明提供了一种模拟金属表面Patch效应的有限元仿真方法和设备，方法包括：构建两块有限平行金属板仿真模型；设置不同的求解域验证有限平行金属板仿真模型间的边界效应；基于有限平行金属板仿真模型，模拟在金属表面附加不同电势分布时的仿真静电力值，并将其与理论静电力值进行比较验证，确认边界效应对Patch效应的影响。将有限元仿真应用于Patch效应的分析，通过仿真不同电势分布得到仿真数据与理论值之间的差距，通过不同求解区域之间仿真数据对比，以验证边界效应对Patch效应影响大小并验证理论合理性。

摘要： 本发明公开了一种基于多尺度卷积的图像patch匹配方法，通过准备数据集；制作数据集；数据预处理；设计三分支‑双通道网络结构；设计多尺度卷积模块；根据提取的特征计算相似性；网络训练；预测匹配概率；评估网络性能。本发明有效克服了现有技术中训练不充分、没有使用多尺度信息等问题，极大的提高了网络的性能，提升了网络的训练效率，增强了网络的鲁棒性。本发明可应用于图像配准、图像检索、图像追踪、多视角重建等领域。

摘要： 一种全局匹配patch的获取方法，包括获取N帧点云的patch集合，N为大于或等于2的整数(S601)；对N帧点云中第i帧点云的参考帧的匹配patch集合中的一个或多个patch与第i帧点云的patch集合中未匹配的一个或多个patch执行匹配操作，以获取第i帧点云的匹配patch集合(S602)，第i帧点云的匹配patch集合包括n个patch；根据N帧点云的匹配patch集合确定M个全局匹配patch集合(S603)，M个全局匹配patch集合中的至少一个集合为在跨N1帧点云中具有匹配关系的patch的集合，N1帧点云为N帧点云中的全部或部分帧。本方法有利于提高视频编码的效率。

摘要： 本发明公开了一种基于CNN的多patch多通道联合特征选择学习的人脸识别方法，属于人脸识别技术领域。该方法首先将原始人脸图像分割成多张子图像，每张子图像再分离成多张通道图像；然后为每张通道图像构建一个CNN网络模型，输入通道图像进行识别；接下来首先将同一子图像的多个通道神经网络进行连接，得到对应多张子图像的多个子图像神经网络，然后将多个子图像神经网络进行连接，作为最终的模型识别结果。本发明通过对现有卷积神经网络模型进行改进以及创新，从而达到优化和提升模型的效果，使得卷积神经网络模型的人脸识别能力更加精准，为其在日常生活、工业发展、科学研究等领域的广泛应用提供更有力的技术保障。

摘要： 本发明公开了一种基于ROI分割区域patch拟合的车间物料配送方法，该方法利用物料配送机器人，采集车间内部的地面图像，然后通过图像处理方法分割ROI区域，拟合目标直线，获取目标直线的左、右端点与中心坐标，与ROI区域的中心坐标进行比较，计算出偏移值，从而调整物料配送机器人的前进方向，控制机器人完成物料配送任务。本方法能够有效地帮助工厂工作人员进行物料配送提醒等服务，同时也能最大限度的减轻工作人员的劳动强度，实现工厂内物流、信息流一体化，提高工厂的物料配送效率和质量。

摘要： 本申请提出了一种基于图像patch序损失的人脸鉴伪方法，包括：S1、获取包含训练图像及其标签信息的人像鉴伪数据集；S2、对所述人像鉴伪数据集进行数据处理，包括：对所述训练图像进行均匀切割并打乱所述训练图像的初始patch序列集合，得到所述训练图像的第一patch序列集合；对所述第一patch序列集合进行增强处理，得到第二patch序列集合；将不同所述训练图像的所述第一patch序列集合和所述第二patch序列集合中的patch块进行随机交换，从而得到处理后的人像鉴伪数据集；S3、利用所述处理后的人像鉴伪数据集训练得到神经网络分类模型；S4、将待检测图像输入到所述神经网络分类模型中。本申请的人像鉴伪方法极大的节约了训练成本和数据收集成本，并且具有较高的判别准确性。

摘要： 提供了一种由解码器实现的点云解码(PCC)方法。该方法包括：解码器的接收器接收码流，该码流包含用于二维(2D)patch的patch旋转启用标志和图集信息；解码器的处理器基于该patch旋转启用标志确定该2D patch能够旋转；处理器旋转该2D patch；处理器使用图集信息和旋转后的2D patch重建三维(3D)图像。

摘要： 一种全局匹配patch的获取方法，包括获取N帧点云的patch集合，N为大于或等于2的整数(S601)；对N帧点云中第i帧点云的参考帧的匹配patch集合中的一个或多个patch与第i帧点云的patch集合中未匹配的一个或多个patch执行匹配操作，以获取第i帧点云的匹配patch集合(S602)，第i帧点云的匹配patch集合包括n个patch；根据N帧点云的匹配patch集合确定M个全局匹配patch集合(S603)，M个全局匹配patch集合中的至少一个集合为在跨N1帧点云中具有匹配关系的patch的集合，N1帧点云为N帧点云中的全部或部分帧。本方法有利于提高视频编码的效率。

摘要： 本发明公开了一种基于多尺度卷积的图像patch匹配方法，通过准备数据集；制作数据集；数据预处理；设计三分支‑双通道网络结构；设计多尺度卷积模块；根据提取的特征计算相似性；网络训练；预测匹配概率；评估网络性能。本发明有效克服了现有技术中训练不充分、没有使用多尺度信息等问题，极大的提高了网络的性能，提升了网络的训练效率，增强了网络的鲁棒性。本发明可应用于图像配准、图像检索、图像追踪、多视角重建等领域。