影片《嗨友记》中手语非手控特征作用研究

手语作为一种视觉语言是聋人沟通交流的重要工具,近年来研究者将重点多放在手控特征的分析上,对于非手控特征的研究较少。为了探究非手控特征在聋人交流表达中的作用,通过使用ELAN软件对手语影片《嗨友记》中的语料进行标注分析,在此基础上得出语料样本中非手控特征在聋人交流表达中所起的作用。

基于HOG算子的手型特征提取算法

手型是动态手势的一个重要特征。已有的动态手势识别方法虽利用了手型信息,但是信息都隐含在数据中。对此提出一种动态手势中手型特征的提取算法。该算法能准确识别出动态手势中的手型特征。通过Kinect获取手部位置数据,计算手势样本的手局部图像的HOG(Histogram of Oriented Gradient)算子,通过统计手势过程中,临近帧的手局部图像的HOG算子的相似性,确定该样本的手型特征所在帧。实验结果显示,其手型特征识别平均正确率达到92.78%。

基于分类区分度和相关性的手形特征选择方法

针对手形特征识别中,由于特征间高相关性产生冗余而降低识别性能的问题,提出利用信息增益和相关系数分别对特征的分类区分度和相关性进行评价,并经过综合分析对手形特征进行优化选择。该方法能够保留分类中起关键作用的特征,并同时去除高相关性的冗余特征量。为了证明该方法的有效性和准确性,采用浮动搜索的方法,以识别率为评价函数确定特征优化组合。实验结果表明,优化后6个特征组成向量的识别率达到96.24%,比全部9个特征组成的特征向量提高了0.43%,同时由于特征数目的减少也降低了运算时间。该方法可以避免常用的搜索性选择方法的复杂性,并有效去除手形识别中低区分度和高冗余的特征,有利于简化算法并与其他特征进行融合使用。

全手形特征的生物识别技术综述

全手形特征多模态生物识别是结合指纹、手形和掌纹的全手形特征信息,具有信息更全面可靠的独特优势,能有效地提高生物特征识别的准确率。简述了全手形生物特征识别技术的基本原理和一些关键技术,对目前流行的各种单模态和多模态生物特征的优势和不足进行了分析,并对生物特征识别技术中存在的问题和未来的研究方向进行了讨论。

广西壮族人手特征的研究

目的 调查研究广西壮族人手的特征。方法 按人类学的方法和标准对广西壮族 4 10名成人 (男 2 0 2人 ,女 2 0 8人 )的 82 0只手进行活体观察和测量 ,并进行总结分析和比较。结果 观察手指远端延伸程度 6项 ,测量手、指、掌共 2 2项 ,经统计分析得出壮族环指远端长于食指远端占 80 % ;小指远端延伸程度以短型占多数 (男 4 6 % ,女 5 8% ) ;壮族手型以Ⅲ型为最多 (男性 5 0 % ,女性 4 6 % ) ;结论 广西壮族人手有其特点和特征 ,壮族各项观察和测量值与汉族比较 ,多数比例相近 ,但显著性检验大部分项目差异有显著性。

非接触采集手形相对特征识别性能分析

因非接触采集方式而产生的成像缩放与倾斜变形现象,使得成像后手形各特征的尺寸发生变化,从而造成绝对特征识别性能的显著下降。针对该问题作出了光学成像分析,证明了因倾斜变形现象产生的影响远小于缩放现象。因此在选用相对特征避免缩放现象的干扰后,利用类内方差均值和Fisher判别率,对变形后相对特征的稳定性和识别性能进行分析。实验结果表明,定义的相对特征可以作为稳定特征用于识别,同时经过小样本实验得到34个相对特征组成的向量,其识别率达到88.93%,说明该特征向量可以在小样本范围达到手形特征的有效识别,并可以作为手部识别的部分有效特征。

聋人自然手语中非手控特征研究

聋人自然手语中的非手控特征，即身体各种姿态和面部各种表情等非手势上的动作和变化，是手语中极其重要的元素，其除了具有健听人在交流时传递情感态度之外的作用，还具有强大的语法功能：表达不同的句式、词性、语气语调、陈述对象等。

手语的非手控特征研究——以阳泉市特殊教育学校聋生自然手语为例

目前对手语非手控特征的文献研究表明,手语非手控特征是手语表达中必不可少的重要元素,它是运用各种面部表情和身体姿态等非手势的动作和变化来区别意义。文章基于聋生的自然语料,较为全面地研究了手语非手控特征的类型,并分析它在手语表达中的语素功能和语法功能。语素层面,手语的非手控特征可以充当副词、形容词和语气词;语法层面,手语的非手控特征可以表示否定句、疑问句和感叹句。

基于红外图像的人手识别

针对红外图像的特点，运用特征手的方法，并配合Ｋ－Ｌ变换高效提取主分量的方坛，实现了对人手图像进行计算机自动识别．给出特征手的基本原理。

螺旋形手征碳纤维的微波介电特性

研究了线圈状和麻花状两种典型螺旋形手征碳纤维以及直线形碳纳米管在8.2-12.4GHz的微波介电特性.螺旋形手征碳纤维通过催化化学气相沉积法制备,直线形碳纳米管用催化裂解浮游法以苯为碳源制备.螺旋形手征碳纤维与石蜡复合体的介电常数的实部(ε′)和虚部(ε″)比直线形碳纳米管与石蜡复合体的小,但线圈状螺旋形碳纤维的介电损耗角正切(tgδ=ε″/ε′)却明显偏大,线圈状和麻花状螺旋形碳纤维的tgδ分别为0.77—0.80和0.47—0.53,直线形碳纳米管的tgδ为0.45-0.77.螺旋形碳纤维与微波作用时的手征特性是导致其tgδ增大的主要原因,螺旋形手征碳纤维对微波的吸收与其自身的形状和尺寸密切相关,所以线圈状螺旋形碳纤维的tgδ比麻花状的大得多,探讨了螺旋形手征碳纤维与微波的作用机理,螺旋形手征碳纤维是一种非常有发展前景的微波吸收材料.

手诊原理及其临证应用浅析

介绍了手的作用及特点,以及一般人的掌指特征,探讨了手诊的原理。并从手掌的厚度和手掌的颜色变化两个角度,介绍了几种常见病的手诊特点。

关于手机游戏设计的研究——如何设计一款成功的手机游戏

随着智能手机的普及和运用,越来越多的国内游戏开发企业把开发重心转移到手机游戏上。手机游戏因其在游戏市场极强的发展态势,当下已经成为游戏开发业的新贵。越来越多的游戏公司转变开发模式,进入手机游戏设计开发的领域。大量的手机游戏精品涌现的同时,大批糟粕也随之进入市场,并面临着山寨、速成、同质化、低质量等等问题。文章分析了手机游戏目前的现状、阻碍和剖析当下主流手机游戏,经过数据分析,从而得出一些针对手机游戏设计的创意思路。

流行语“剁手党”探析

"剁手党"中的"剁手"并不是词典中的释义,而是运用了夸张的修辞手法生动形象地解释了网购成瘾的人这一新型群体。本文主要探析了"剁手党"的词源、修辞、语用特征及流行原因,得出"剁手党"一词虽得到了大众的广泛认可,但我们仍要做一名理性的消费者的结论。

基于改进GAN的手绘特征草图虚拟地形生成方法

三维虚拟地形生成目前广泛应用于野外虚拟地理环境、数字孪生城市建设等,是实现地理元宇宙发展的重要组成部分。传统生成三维虚拟地形的方法存在生成地形真实度不够、重复地形块与网格伪影等问题。基于此,提出一种改进生成对抗网络的手绘特征草图虚拟地形生成方法。以条件生成对抗网络和pix2pix架构为参考,提出虚拟地形生成网络模型,通过改进生成器U-Net网络,增加随机噪声,替换损失函数,提高模型训练的效率及生成地形的真实性。同时,利用精度较高的黄土高原部分地区数字高程模型数据为样本,构建用于虚拟地形生成模型的地形特征数据集,提取真实地形特征开展虚拟地形生成网络训练。最后,完整构建从手绘特征草图到虚拟地形的模型推理流程。实验结果表明,利用黄土高原地形数据和改进后的虚拟地形生成模型,能够满足用户在输入手绘地形特征草图后获得符合地形特征描述、高真实感的虚拟地形,在三维地形建模与编辑方面具有良好的发展前景。

Factors predicting survival in patients with proximal gastric carcinoma involving the esophagus

AIM： To investigate the clinicopathologic features which predict surgical overall survival in patients with proxima gastric carcinoma involving the esophagus （PGCE）. METHODS： Electronic pathology database established in the Department of Pathology of the Nanjing Drum Tower Hospital was searched for consecutive resection cases of proximal gastric carcinoma over the period from May 2004 through July 2009. Each retrieved pa- thology report was reviewed and the cases with tumors crossing the gastroesophageal junction line were se- lected as PGCE. Each tumor was re-staged, following the guidelines on esophageal adenocarcinoma, accord- ing to the 7th edition of the American Joint Commission on Cancer Staging Manual. All histology slides were studied along with the pathology report for a retrospec- tive analysis of 13 clinicopathologic features, i.e., age, gender, Helicobacter pylori （H. pylon} infection, surgical modality, Siewert type, tumor Bormann＇s type, size, dif- ferentiation, histology type, surgical margin, lympho- vascular and perineural invasion, and pathologic stage in relation to survival after surgical resection. Prognos- tic factors for overall survival were assessed with uni- and multi-variate analyses. RESULTS： Patients＇ mean age was 65 years （range： 47-90 years）. The male： female ratio was 3.3. The 1-, 3- and 5-year overall survival rates were 87%, 61% and 32%, respectively. By univariate analysis, age, male gender, H. pylori, tumor Bormann＇s type, size, histology type, surgical modality, positive surgical margin, lym- phovascular invasion, and pT stage were not predictive for overall survival; in contrast, perineural invasion （P = 0.003）, poor differentiation （P = 0.0003）, 〉 15 to- tal lymph nodes retrieved （P = 0.008）, positive lymph nodes （P = 0.001）, and distant metastasis （P = 0.005） predicted poor post-operative overall survival. Celiac axis nodal metastasis was associated with significantly worse overall survival （P = 0.007）. By multivariate analysis, ≥ 16 positive nodes （P = 0.018）, lymph node ratio 〉 0.2 （P = 0.003）, and overall pathologic stage （P= 0.002） were independent predictors for poor overa survival after resection. CONCLUSION： Patients with PGCE showed worse over- all survival in elderly, high nodal burden and advanced pathologic stage. This cancer may be more accurately staged as gastric, than esophageal, cancer.

ADENOSQUAMOUS LUNG CARCINOMA:CLINICAL CHARACTERISTICS,SURGICAL TREAMENT AND PROGNOSIS

Objective.The effectiveness of surgical resection of adenosquamous carcinoma of the lung remains poorly defined because of the histology’s relatively low frequency, the failure in most published series to separate adenosquamous carcinoma from the other variants of non-small cell lung carcinoma.To define the effectiveness of surgical treatment of adenosquamous carcinoma,we have retrospectively reviewed our hospital experience over a 12-year period. Methods.Retrospectively reviewed 22 cases of adenosquamous carcinoma who were surgically treated,except one patient,in the PUMCH from Jan.1985 to Aug.1997.This series constitutes the 19% of a total of 1 245 patients with all types of surgical treatment for the primary lung cancer during the same time. Results.The adenosquanous carcinoma was mostly presented in the old patients with a mean age of 60 years and mostly located in the peripheral of lung(n=20).The overall 5-year survival was 23%.Those with stage Ⅰ tumors survival was only 18%(n=13), stage Ⅱ 5%. The survival in stage Ⅲ tumors was not longer than 25 months and in stage Ⅳ survival was not longer than 12 months. Conclusion.Our results suggest that adenosquamous carcinoma of lung was a virulent tumor,which exhibited highly aggressive biological behavior with early lymph nodes metastasis(46%) and its prognosis was worse than that of both squamous cell carcinoma and adenocarcinoma.

Multifocal stenosing ulceration of the small intestine

Several reports have described an apparently uncommon clinicopathological disorder that is characterized by multifocal stenosing small-intestinal ulceration.Compared to Crohn's disease,the ulcers are not transmural and typically remain shallow,and involve only the mucosa and submucosa.The disorder seems to be localized in the jejunum and proximal ileum only,and not the distal ileum or colon.Only nonspecif ic inflammatory changes are present without giant cells or other typical features of granulomatous inflammation.Most patients present clinically with recurrent obstructive events that usually respond to steroids,surgical resection,or both.With the development of newer imaging modalities to visualize the small-intestinal mucosa,such as double-balloon enteroscopy,improved understanding of the long-term natural history of this apparently distinctive disorder should emerge.

“屈指”道来:中国现代诗百年别叙

中国新诗的早期“手形”,对应于当时的新文化运动以及后来的国防文学,是一个热切的“手掌”——虽然它有些“残损”;在后来的赞美诗阶段,是“大拇指”一枝独秀;从诗人郭路生的“食指”开始,中国现代诗进入到以“食指”为形象特征的控诉、质疑、批判的“朦胧诗”阶段;其后“口语诗”“身体写作”及“下半身诗歌”出现,颠覆、解构甚至不无挑衅的“中指”成为这一阶段现代诗的特征性“手形”;接下来的是可以用“无名指”喻称的空壳诗、废话诗、口水诗的肆虐以及优秀诗人被淹没的默然;再其后,截句和自媒体款曲暗通,现代诗进入以“小指”为形象特征的互相蔑视的“微信”时代。整个中国百年现代诗歌,从“崇高”到“崇低”,从“引体向上”到“引体向下”,从“大拇指”到“小指”,既是艺术的探底,也是艺术的涅槃,而中国现代诗歌五指并拢的“集大成”的“纯诗”时代也即将来临。

Prognositic factors and clinicopathologic characteristics of small gastrointestinal stromal tumor of the stomach:a retrospective analysis of 31 cases in one center

Objective： To analyze the clinicopathologic characteristics and prognostic factors of small gastrointestinal stromal tumor （GIST） of the stomach. Methods： A total of 31 small gastric GIST patients, including 10 males and 21 females, with a median age of 58 years （37- 81 years）, who underwent surgery at any time from 1999 to 2012 were included in this study. The clinical records of the patients were analyzed retrospectively. Results： Abdominal discomfort and pain （10 cases, 32.3%, respectively） were the two most common complaints among the patients. All patients received surgery, 11 received gastric wedge resection, 11 received subtotal gastrectom）5 5 received laparoscopic gastric wedge resection, and 4 received endoscopic submucosal dissection. No severe adverse complication was observed. A total of 29 patients （93.5%） were followed up. During the follow-up, 2 patients were found to exhibit tumor recurrence, and 1 patient had liver metastases. One patient died of tumor progressionwhile another died of another malignant tumor. Median progression free survival （PFS） time was 120.3 months, and median overall survival （OS） time was 130.4 months. Conclusion： Small gastric GIST has better prognosis. Surgery is the best choice for therapy. Micro-invasive procedures are safe and effective for elective patients. Tumor necrosis, tumor bleeding, and muscle invasion are potential prognostic factors of small gastric GIST.

Clinicopathologic Characteristics and Surgical Outcome of Gastric Cancer in Patients Younger than 36 Years of Age

OBJECTIVE This study was designed to determine theclinicopathologic features of young patients who underwentgastrectomy for gastric cancer and to improve the clinicalmanagement of this disease.METHODS From 1981 to 2000,among 1,830 gastric cancerpatients were admitted in our hospital for surgical treatment,66of them were<36 years of age.The clinicopathologic data of theseyoung patients were collected and reviewed.RESULTS The male:female ratio was 1.2:1.Most tumors werelocated in the lower third of the stomach(63.1%).The overall5-year survival rate of 66 cases was 28.7%.The 5-year survivalrates in the patients with early stages and with advanced stages ofgastric carcinoma were 77.8%(7/9)and 21.1%(12/57),respectively.Unfavorable prognostic factors associated with poor 5-yearsurvival included the degree of the invasion in the gastric wall(P<0.05),and curability of resection(non-curative vs.curative;P<0.05).CONCLUSION Gastric cancer in young adults tends to be moreadvanced presentation when diagnosed.However,young patientswith early gastric cancer can tolerate radical treatments well.Itis important to promptly make a precise diagnosis for gastriccarcinoma in young patients and to treat it in early stage.