走不出的黑暗:《神秘之河》

这是克林特·伊斯特伍德打造的一条"神秘河",河水中流淌着沉重的悲剧,河水中夹带着的悲伤直击你的心灵。它没有警匪片的火爆,亦没有悬疑惊悚片紧张刺激,但是它却有着自己独特的力量来撼动你的心灵。神秘之河平静如斯,我们不知道在这深深的水底之下隐藏着什么?或如人心,永远看不透这阴暗角落里的黑暗。当这抹阴郁与黑暗充满全片,故事在灰色的基调下慢慢发生,让我们的心不断感受来自影像中的压抑,想寻找到一丝光亮,却总不能够。年迈的伊斯特伍德总是把人世看得太过透彻,吝啬于施舍出哪怕一点光明。就如同他在拍摄《不可饶恕》那样。

Visual detection method of chamfer Ron the root bottom of textile workpiece roller

Roller is an important workpiece of automatic spinning machine. Only if the chamferR on the root bottom of roller＇s guide pillar meets processing accuracy requirement can the end face of one roller＇s guide pillar match the correct position of another roller＇s end face on the guide hole. Therefore, the size of chamfer R on the root bottomof the roller＇s guide pillar has an important influence on the operating state of automatic spinning machine. In order to achieve the rapid, automatic and precise measurement of chamfer R on the root bottom of roller, an auto detection system }＇or roller~ s chamfer based on computer vision technology is proposed. Firstly, the principle of measurement based on computer vision technology is introduced. And then the extraction method of charnfer^s characteristic parameters is presented, which uses image processing technique to obtain these characteristic parameters by means of collected images of roller contour, including extraction of region of interest, extraction of subpixel precise edge, segmentation of arc and line, fittingof geometric primitives, etc. Finally, after experimental verification, the measurement error is within ＋ 5 μm and repeated accuracy is 0.1 pm. The results show that this measurement method is applicable to not only the chamfer on the textile workpiece, but also the workpieces of shaft type with various of sizes.

Sharing Culture and Belonging Through Cross-Cultural Collaborative Painting

The topic of this paper is animals in painting and the investigative process undertaken by the artist Vanessa Barbay during her practice--led Ph.D.. Her aim was to discover a way to present deceased animals that retained their agency as individuals by challenging the objectifying nature of representation. The foundation of this method was the collaboration between artist and dead animal subjects through harnessing the natural decomposition of the subject in order to generate their image. A related stream of Barbay＇s research was learning about the art and culture of Kunwinjku speaking artists living in Kunbarlanja Western Amhem Land where artists have painted images of animals on rock shelters and on bark from ancient through to contemporary times. The significance of their form of animal representation is a mythopoeic relationship between locally found pigments and animal bodies. Paintings are considered as collaboration between matter, subject, and artist, which Barbay extends in her current work centred on collaborative painting involving more than one artist.

Life-threatening Spontaneous Retroperitoneal Haemorrhage:Role of Multidetector CT-angiography for the Emergency Management

Objective To evaluate the role of multidetector computed tomography-angiography(MDCTA) for management of life-threatening spontaneous retroperitoneal haemorrhage(SRH).Methods A retrospective analysis of the medical records of all SRH patients admitted to our hospital from January 1,2005 to November 31,2014 was performed.SRH was defined as unrelated to invasive procedures,surgery,trauma,abdominal tumor or aortic aneurysm.Life-threatening SRH was defined as hemodynamic instability with hypotension.Sixteen cases met the inclusive criteria.Patients' characteristics,clinical presentation,imaging of MDCTA,treatment modalities,morbidity,and follow-up data were analyzed.Results The group of 16 patients included 11 men and 5 women,with a mean age of 51.5 ± 16.4years.All patients underwent MDCTA scan examinations,and active contrast media(CM) extravasation were found in 9 patients.Angiography was performed for 8 patients in the CM extravasation group.Bleeding vessels were found in 7 patients who underwent successful embolization.One patient in the CM extravasation group did not undergo angiography and died of bleeding.Seven patients without active CM extravasation underwent conservative management.Bleeding was controlled for all these 7 patients,and 1 patient died of multiple organ failure.Fourteen patients survived from SRH were successfully discharged.One patient died of heart failure during follow-up.Conclusion MDCTA was useful in the diagnosis of SRH and proved to be predictive for the outcome of conservative treatment and early intervention.

Methods and Prospects of Road and Linear Structure Automatic Extraction from Remote Sensing Images

Automatic extraction of road and linear structure from remote sensing images is a very important problem. This paper analyses several existing methods of the automatic road and linear structure extraction by using some multi-spectral remote sensing images acquired from different spatial resolutions, districts and road characteristics. Their advantages and disadvantages have been generalized.

Automatic Optimization of Chirp Setting Parameters in Medical Ultrasound Contrast Imaging

Medical ultrasound contrast imaging is a powerful modality undergoing successive developments in the last decade to date Lately, pulse inversion has been used in both ultrasound tissue harmonic and contrast imaging. However, there was a tradeoff between resolution and penetration. Chirp excitations partially solved the tradeoff, but the chirp setting parameters were not optimized. The present work proposes for the first time combining chirp inversion with ultrasound contrast imaging, with the motivation to improve the contrast, by automatically optimizing the setting parameters of chirp excitation, it is thus an optimal command problem. Linear chirps, 5 μm diameter microbubbles and gradient ascent algorithm were simulated to optimize the chirp setting parameters. Simulations exhibited a gain of 5 dB by automatic optimization of chirp inversion relative to pulse inversion. The automatic optimization process was quite fast. Combining chirp inversion with ultrasound contrast imaging led to a maximum backscattered power permitting high contrast outcomes and optimum parameters.

Remote Sensing Classification of Marsh Wetland with Different Resolution Images

Successful biological monitoring depends on judicious classification. An attempt has been made to provide an overview of important characteristics of marsh wetland. Classification was used to describe ecosystems and land cover patterns. Different spatial resolution images show different landscape characteristics. Several classification images were used to map and monitor wetland ecosystems of Honghe National Nature Reserve （HNNR） at a plant community scale. HNNR is a typical inland wetland and fresh water ecosystem in the North Temperate Zone. SPOT-5 10 m ×10 m, 20 m × 20 m, and 30 m×30 m images and Landsat -5 Thematic Mapper （TM） images were used to classify based on maximum likelihood classification （MLC） algorithms. In order to validate the precision of the classifications, this study used aerial photography classification maps as training samples because of their high accuracy. The accuracy of the derived classes was assessed with the discrete multivariate technique called KAPPA accuracy. The results indicate： （1） training samples are important to classification results. （2） Image classification accuracy is always affected by areal fraction and aggregation degree as well as by diversities and patch shape. （3） The core zone area is protected better than buffer zone and experimental zone wetland. The experimental zone degrades fast because of irrational development by humans.

Double segmental tibial fractures-- an unusual fracture pattern

A case of a 50-year-old pedestrian who was hit by a bike and suffered fractures of both bones of his right leg was presented. Complete clinical and radiographic assessment showed double segmental fractures of the tibia and multisegmental fractures of the fibula. Review of the literature revealed that this fracture pattern was unique and only a single case was reported so far. Moreover, we discussed the possible mechanisms which can lead to such an injury. We also discussed the management of segmental tibial fracture and the difficulties encountered with them. This case was managed by modern osteosynthesis technique with a pleasing outcome.