科技与艺术的相遇:电影术与科学电影

电影,首先是现代科学技术应用于人类感知领域的一项发明。运动—影像的感知是基于摄影和放映过程的这样一种悖论:通过高速连续摄影,对运动的客体进行等距离的曝光,在胶片上“印刻”成静止画格,即冻结图像,这就像是在雕刻时间。然后,在电影放映时,给剪辑成片的胶片带施加外在的机械运动,快速地让“停止时间”的接续性来投射出时间连续性。

“影戏”:“影”、“戏”与电影艺术——中国早期电影观念研究

"影戏"是早期中国电影的核心观念。长期以来,人们都简单地用"电影即戏剧"来阐释"影戏"观念。本文在细致梳理历史文献的基础上,认为中国早期电影观念有一个发展过程,从最初认为"影戏是由扮演的戏剧而摄成的影片",到后来强调"电影剧是电影术与戏剧的结合",强调"影剧是一种独立的艺术",电影家的认识在逐渐深入。

以影像之名——电影艺术与建筑实践

试图考察电影艺术与建筑实践的关联性及其对建筑实践的影响,电影作为独立的艺术门类,不仅能给建筑提供具体风格或形式上的灵感和借鉴,更为深刻的方面在于电影关联和组织媒介的方式。电影早已不仅是被观看的再现式活动图像,它对我们身处的时空所进行的创造性实践,开启了思维与影像的可能维度。其实践不仅使自身发展成为独立的艺术,而且,电影的表达手段和建构策略也成为时代性的认知和感知方式。如今,再现现实的技术手段发展为解放了的影像文化,对具象空间的拟仿成为实践着的思维策略。电影反作用于现实,开拓了新的空间向度,这一实跋中的媒介美学,显然亦能给建筑实践带来深层次的启示。

空间的叙事认知：电影实时三维虚拟现实生成的运动视觉经验

自18世纪起.动态视觉就开始以多种形式存在和发展。人们开始通过运动来认知空间.换句话说.现代人的空间经验已经逐步从以往的静态转化为动态。近年来.无论是叙事理论、认知心理学,还是游戏理论都从不同的角度对人的空间经验给予了极大的重视。那么.建筑学如何才能在空间经验的研究上从相关领域获益呢7数字媒体到底在多大程度上能有效地把对运动空间经验的关注应用在辅助设计和交流的过程中呢?这篇文章的主要目的就是从解析空间的动态视觉文化发展入手,尝试从艺术、建筑、理论等几个相互独立有相互关联的层面展开论述.尝试勾画出空间动态视觉出现背后的话语逻辑以及其产生的影响。并尝试从叙事认知学的角度探索人的空间视觉感知以及一套如何运用数字媒体来生成沉浸和互动的空间经验的方法。为了更清楚地说明问题.本文还会介绍一个笔者为由英国艺术人文研究机构资助而做的名为"散漫构成一场所、叙事和数字性在未来的博物馆"的研究项目,希望以此为例.尝试如何用电影实时三维虚拟现实生成博物馆中人的运动视觉经验。

尊重“求异”鼓励畅想

心理学中有“求同思维”与“求异维思”之分。循着教材、教师的安排进入意境称之为“求同思维”,这种思维不会超越框定的范围,借用一句电影术语,可称之为“栲且”。“求异思维”则不同,它不苟同,不重复,不满足于固定的答案,而是别有见地,另有创新。课堂上出现的“求异思维”,是“创造力”的雏形,应当引起教师的重视。

Electromagnetic Model and Image Reconstruction Algorithms Based on EIT System

An intuitive 2D model of circular electrical impedance tomography （EIT） sensor with small size electrodes is established based on the theory of analytic functions. The validation of the model is proved using the result from the solution of Laplace equation. Suggestions on to electrode optimization and explanation to the ill-condition property of the sensitivity matrix are provided based on the model, which takes electrode distance into account and can be generalized to the sensor with any simple connected region through a conformal transformation. Image reconstruction algorithms based on the model are implemented to show feasibility of the model using experimental data collected from the EIT system developed in Tianjin University. In the simulation with a human chestlike configuration, electrical conductivity distributions are reconstructed using equi-potential backprojection （EBP） and Tikhonov regularization （TR） based on a conformal transformation of the model. The algorithms based on the model are suitable for online image reconstruction and the reconstructed results are aood both in size and position.

Imaging technologies in oilfield applications

In this paper, we describe some recent imaging technologies developed by Schlumberger for oilfield downhole mul- tiphase flow production logging (PL) and cross-well electromagnetic (EM) survey applications. FloScan Imager (FSITM) has been introduced as a 3-phase oil/gas/water flow PL tool for deviated and horizontal wells. FSI sensors can map fluid velocity and holdup profiles along a vertical diameter of the wellbore at every survey depth, enabling a robust estimate of the individual phase flow rates in complex flow regimes. The cross-well EM survey is based on cross-borehole induction logging technique and provides resistivity distribution at a reservoir scale. It is a useful tool for reservoir management and is most effective in dynamic fields where fluid saturations are variable in time and space. The tool can be used to identify (water or steam) flooded and bypassed regions. By monitoring changes in the resistivity spatial distribution with time, cross-well EM survey is very effective at mapping inter-well temperature and structure. Some field examples are shown for both FloScan Imager PL tool and cross-well resistivity imaging survey.

Use of 3-D magnetic resonance electrical impedance tomography in detecting human cerebral stroke: a simulation study

We have developed a new three dimensional (3-D) conductivity imaging approach and have used it to detect human brain conductivity changes corresponding to acute cerebral stroke. The proposed Magnetic Resonance Electrical Impedance Tomography (MREIT) approach is based on the J-Substitution algorithm and is expanded to imaging 3-D subject conductivity distribution changes. Computer simulation studies have been conducted to evaluate the present MREIT imaging approach. Simulations of both types of cerebral stroke, hemorrhagic stroke and ischemic stroke, were performed on a four-sphere head model. Simulation results showed that the correlation coefficient (CC) and relative error (RE) between target and estimated conductivity distributions were 0.9245±0.0068 and 8.9997%±0.0084%, for hemorrhagic stroke, and 0.6748±0.0197 and 8.8986%±0.0089%, for ischemic stroke, when the SNR (signal-to-noise radio) of added GWN (Gaussian White Noise) was 40. The convergence characteristic was also evaluated according to the changes of CC and RE with different iteration numbers. The CC increases and RE decreases monotonously with the increasing number of iterations. The present simulation results show the feasibility of the proposed 3-D MREIT approach in hemorrhagic and ischemic stroke detection and suggest that the method may become a useful alternative in clinical diagnosis of acute cerebral stroke in humans.

Design of ERT system

A new electrical resistance tomography (ERT) system, based on the bi-directional current pulse technique, is de- veloped. Polarization effects at the electrodes are eliminated. During each half cycle of the excitation process, direct current (DC) is used as the excitation source and filtering is not needed. Moreover, using optimized data collection protocol, the number of current injections for a 16-electrode system is reduced to 14 for 104 independent readings of an image. Experimental results showed that the system is effective using the sensitivity coefficient algorithm for image reconstruction.

Electrode models in electrical impedance tomography

This paper presents different views on electrode modelling, which include electrode electrochemistry models for modelling the effects of electrode-electrolyte interface, electric field electrode models for modelling electrode geometry, and electrode models for modelling the effects of electrode common mode voltage and double layer capacitance. Taking the full electrode models into consideration in electrical impedance tomography (EIT) will greatly help the optimised approach to a good solution and further understanding of the measurement principle.

Clinical implication of FDG uptake of bone marrow on PET/CT in gastric cancer patients with surgical resection

AIM To determine the relationship between F-18 fluorodeoxyglucose(FDG) uptake of bone marrow(BM) on positron emission tomography/computed tomography(PET/CT) and clinical factors and to assess the prognostic value of FDG uptake of BM in gastric carcinoma.METHODS We retrospectively enrolled 309 gastric cancer patients who underwent staging FDG PET/CT and curative surgical resection. FDG uptake of primary tumor was visually classified as positive or negative FDG uptake. Mean FDG uptake of BM(BM SUV) and BM-to-liver uptake ratio(BLR) were measured. The relationships of BM SUV or BLR with clinical factors were evaluated. The prognostic values of BM SUV, BLR, and other clinical factors for predicting recurrence-free survival(RFS) and overall survival(OS) were assessed.RESULTS Of 309 patients, 38 patients(12.3%) experienced cancer recurrence and 18 patients(5.8%) died. Patients with advanced gastric cancer, positive FDG uptake, and recurrence had higher values of BM SUV and BLR than those with early gastric cancer, negative FDG uptake, and no recurrence(P < 0.05). BM SUV and BLR were significantly correlated with hemoglobin level, neutrophil-to-lymphocyte ratio, and platelet-tolymphocyte ratio(P < 0.05). On multivariate analysis, multiple tumors, T stage, lymph node metastasis, tumor involvement of resection margin, and BLR were significantly associated with RFS(P < 0.05). T stage, lymph node metastasis, hemoglobin level, and BLR were significantly associated with OS(P < 0.05). CONCLUSION BLR on PET/CT was an independent prognostic factor for RFS and OS in gastric cancer patients with curative surgical resection.

Performance of 18-fluoro-2-deoxyglucose positron emission tomography for esophageal cancer screening

AIM To evaluate the performance of 18-fluoro-2-deoxyglucose positron emission tomography(FDG-PET) for esophageal cancer(EC) screening.METHODS We retrospectively analyzed the data of consecutive asymptomatic individuals who underwent FDG-PET and esophagogastroduodenoscopy(EGD) simultaneously for cancer screening at our institution from February 2004 to March 2013. In total, 14790 FDG-PET and EGD procedures performed for 8468 individuals were included in this study, and the performance of FDGPET for EC screening was assessed by comparing the results of FDG-PET and EGD, considering the latter as the reference.RESULTS Thirty-two EC lesions were detected in 28 individuals(31 squamous cell carcinomas and 1 adenocarcinoma). The median tumor size was 12.5 mm, and the depths of the lesions were as follows: Tis(n = 12), T1a(n = 15), and T1b(n = 5). Among the 14790 FDG-PET procedures, 51 examinations(0.3%) showed positive findings in the esophagus; only 1 was a true-positive finding. The screen sensitivity, specificity, positive predictive value, and negative predictive value of FDGPET for ECs were 3.6%(95%CI: 0.1-18.3), 99.7%(95%CI: 99.6-99.7), 2.0%(95%CI: 0.0-10.4), and 99.8%(95%CI: 99.7-99.9), respectively. Of the 50 FDG-PET false-positive cases, 31 were observed in the lower esophagus, and gastroesophageal reflux disease was observed in 17 of these 31 cases.CONCLUSION This study is the first to clarify the FDG-PET performance for EC screening. Based on the low screen sensitivity, FDG-PET is considered to be difficult to use as a screening modality for ECs.

Direct cholangioscopy combined with doubleballoon enteroscope-assisted endoscopic retrograde cholangiopancreatography

Double-balloon enteroscope (DBE)-assisted endoscopic retrograde cholangiopancreatography (ERCP) is an effective endoscopic approach for pancreatobiliary disorders in patients with altered gastrointestinal anatomy. Endoscopic interventions via DBE in these postoperative settings remain difficult because of the lack of an elevator and the use of extra-long ERCP accessories. Here, we report the usefulness of direct cholangioscopy with an ultra-slim gastroscope during DBE-assisted ERCP. Three patients with choledocholithiasis in postoperative settings (two patients after Billroth Ⅱ gastrojejunostomy and one patient after Roux-en-Y gastrojejunostomy) were treated. DBE was used to gain access to the papilla under carbon dioxide insufflation, and endoscopic sphincterotomy was performed with a conventional sphincterotome. For direct cholangioscopy, the enteroscope was exchanged for an ultra-slim gastroscope through an incision in the overtube, which was inserted directly into the bile duct. Direct cholangioscopy was used to extract retained bile duct stones in two cases and to confirm the complete clearance of stones in one case. Bile duct stones were eliminated with a 5-Fr basket catheter under direct visual control. No adverse events were noted in any of the three cases. Direct cholangioscopy with an ultra-slim gastroscope facilitates subsequent treatment within the bile duct. This procedure represents another potential option during DBE-assisted ERCP.

Film Le Dēpart by Jerzy Skolimowski： Important Unknown Piece of Art

The aim of this essay is firstly to indicate a little-known film Le Dēpart made by the famous Polish director Jerzy Skolimowski in 1967 year as an example of the Polish New Wave. Although it was made in Belgium and it stars Jean-Pierre Lēaud as a car-obsessed young man trying to get possession of a Porsche for a race. The film won the Golden Bear at the 17th Berlin International Film Festival and was also selected as the Belgian entry for the Best Foreign Language Film at the 40th Academy Awards, but was not accepted as a nominee. Secondly, I analyze the reasons of misunderstanding the idea of the director in the film when it was shown in the the public. Thirdly, ＂entering＂ this movie in context of art： poetry, painting etc. Then to answer the question （hypothesis）： ＂Is the Polish Film New Wave a phenomenon that did not exist？＂ The methodology used for the paper is analysis and interpretation of the film itself; analysis of its reception in the 60s and now： poetics of receipt, cognitivism, comparative research.

Research on the design of art derivatives

With the rapid development of China film industry, more and more people are willing to go to the cinema to feel rich film culture, at the same time for the movie has also been seen the movie characters, including clothing and some other relative derivatives have higher requirements. Thus the birth of film art image derivatives, with the continued rapid development of film technology and film art, film art derivatives with 3D, 4D will be the future of film art image derivatives success ＂interview＂ has become a new economic growth point China film, its development prospects are very impressive. According to market research and analyse, through the research and analysis of 3D MAX movie derivatives as an example, from the aspects of brand image positioning and design of more specific design and research of film art image derivatives, thereby to strengthen and promote the combination of film technology and art products, and ultimately promote the rapid development of film art derivatives.

Measurement of oil volume fraction and velocity distributions in vertical oil-in-water flows using ERT and a local probe

This paper presents the use of a high performance dual-plane electrical resistance tomography (ERT) system and a local dual-sensor conductance probe to measure the vertical upward oil-in-water pipe flows in which the mean oil volume fraction is up to 23.1%. A sensitivity coefficient back-projection (SBP) algorithm was adopted to reconstruct the flow distributions and a cross correlation method was applied to obtain the oil velocity distributions. The oil volume fraction and velocity distributions obtained from both measurement techniques were compared and good agreement was found, which indicates that the ERT tech- nique can be used to measure the low fraction oil-water flows. Finally, the factors affecting measurement precision were discussed.

Ambivalent Portrayals of Female Cyborgs in Oshii Mamoru＇s Ghost in the Shell and Innocence

What we witness is that Oshii＇s narrative and patriarchal technology creates the female cyborgs, who simply mirror male heterosexual desire and who are denied agency in their role. Oshii does not imagine any possibility that might destabilize his newly-imagined order, such as a cyborg that might upset heterosexuality. The absence of any female agency or desire in his cyber fantasy questions its subversive potential. Oshii seems to be immune to feminist theories on posthuman existence that conceptualizes subjectivity outside the gender polarities. Oshii describes a society where high technology only reinforces gender polarities. The representations of women＇s relationship to technology in Oshii＇s film, therefore, are quite problematic; the transgression of boundaries does not work out to reduce or annihilate domination by patriarchal needs and desires. Despite the fact that Oshii denies his female cyborgs a subject position other than that based exclusively in patriarchal fear and desire, his representations mark an ambivalence inherent in cyborg resistance, and feminist politics need to pay attention to such ambivalence.

Ethiopian Cinema： The Socio-economic and Political Impacts of Imperial Era on the Development of Screen Media 1

Ethiopia that had been at the high-up as one of the few world powers in the 1 st and early centuries of the 2nd millennium, and later to descend to poverty line to the extent of being synonym for famine and degradation in an English dictionary, is currently on the verge of socio-economic renaissance. Likewise, the country that experienced film viewing in the very early years of the development of world cinema for more than hundred years bad eventually lagged behind those African countries exposed to cinematic arts a few decades ago; but now relatively ascending to its historical status. These days, over hundred films are produced on annual bases in Ethiopia. Nevertheless, articles, books, and encyclopedias written on African and world cinema do not as such include the Ethiopian account, hence adversely affecting the wholeness of universal knowledge. This research thus attempts to investigate the socio-economic and political impacts that governed the development of the Ethiopian screen media during imperial era （1897-1974）. The inconsistency in the development of Ethiopian cinema will be analyzed and demonstrated in conjunction with the socio-economic and political features in the era of Emperor Menelik II, Lij Iyasu, Empress Zewditu, and Emperor Haile Sellassie. The study will portray the strong link between Cinema and mode of productions that would be of a scholastic benefit to the Ethiopian and the international academia. The article hopefully, will contribute to the historiography and completeness of African screen median in particular, and world cinema in general.

All Conversations About Love Are the Same

In The Metaphysics of Love, Schopenhauer argues that love is a literary invention. For the philosopher, this feeling was a creation of men to mask the real desire. On the other hand, Nicolas Grimaldi, while analysing Marcel Proust＇s work, enumerates a series of issues that strengthen Schopenhauer＇s arguments. For Grimaldi, the writer explains the literary character of love in its work. Through the analysis of four films, from different cinematography, this work intends to explore the issue of the representation of love in the art of film. In an attempt to understand how film uses its formal and discursive resources to present or represent this feeling, this paper analyses films chosen on the basis of how they tell their love stories. Beginning with Gertrud whose motto, Omnia Love says it all. In The Woman Next Door, Truffaut reveals the paradox of love and pain. Wings of Desire speaks of love and redemption. More recently, Kiarostami offered his Certified Copy, a film that asks whether a copy can produce in us the same thrill of an original. If love is an invention of literature, this paper seeks to understand how such an invention is born, and what it consists in modern and contemporary cinema.