从“知觉-影像”理论看《青春祭》的诗意生成机制

“知觉—影像”理论从影像形式的本质层面界定诗意电影,而中国本土诗意电影一直与繁复厚重的中国传统文化语境脱离不开。对此,文章借用该理论,以第四代导演张暖忻的诗意电影《青春祭》为分析对象,尝试剥离开繁复厚重的中国传统文化语境与本土诗意电影的联系,从更本质的影像形式层面探索本土诗意电影中的诗意的具体生成机制与呈现方式。

“观·知·感·创”小学美术教学路径的实践探索

在学校美术教育教学中,审美感知的培育有助于学生发现美、感知美,丰富审美体验,提升审美品位。文章在充分尊重儿童感知规律的基础上,以审美感知为切入点,以培养学生的“艺术直觉、视觉思维、创新能力”为目标,构建“观·知·感·创”美术教学的基本环节,将“知觉”作为重要的学习途径运用于小学美术课堂教学,可帮助学生提高审美感受能力、审美判断能力、审美理解能力,让学生学会通过丰富的视觉感知,从审美的角度来思考问题和观察世界,从而更好地提升学生的美术核心素养,让学生拥有更深厚、更丰富的美学涵养。

知觉运动技能的时空透视与心理反应过程

通过对知觉运动技能心理反应过程的分析,指出在开放性的球类项目中,运动员的知觉能力是运用时空透视的感觉体验,在"知觉到"连续体上确认刺激位置的表现;同时反应了运动员的预期决策能力(运动决策Ⅰ),即通过知觉判断对方要"做什么"的能力。其次,是运动员对确认信号"球"的碰撞时间或接触时间TTC的知觉与动作反应程序及组织的运动决策能力的表现(运动决策Ⅱ),即队员"如何做"的能力。

试论课堂教学中的身体现象学

哲学史中的身体是受到忽视和贬低的,在身心二元论的主流身体观影响下,肉体更为灵魂承受了痛楚与责难。近代以来,身体才渐渐受到关注,成为体验世界的主体。身体现象学是"身心合一"的视角,强调回到事物本身,强调体验的理论与现代教育的发展不谋而合。本文在身体现象学视域下,分析课堂教学中的身体"知觉",试图解放学生的身体,还学生以生命的灵气。

Perceptual Learning of Grate Orientation Discrimination in Cats

Perceptual learning of orientation discrimination was investigated using cats. Two adult cats （Cat 1 and 2） were trained to monocularly discriminate between two static striped sinusoidal grates with 30° orientation difference. After greater than 80% correct performance was reached, cats were then required to monocularly perform a discrimination between two grates with consecutively shifting orientation difference（2°, 4°, 6°, 8°, 10°, 12°, 16°, 20°, 24°, 30°） . The staircase method （two correct-down and one error-up） was applied throughout the training to track the threshold of orientation difference that cats could detect. The performance of detecting grates with varied orientation difference was measured respectively for beth trained and untrained eyes before and after training. Our results showed that the learning effect of discrimination for grates with a fixed orientation difference transferred completely from the trained eye to the untrained eye, whereas the inter-eye transfer for detecting °ates with gradually reducing orientation difference was almost nonegrates. The two opposite learning effects in the same subject strongly suggest that different information processing mechanisms might mediate the learning processes.

Quantitative Relationship Between Simultaneous Color Contrast and Hue Difference in Complex Displays

To investigate quantitatively one of the parametric effects——simultaneous color contrast on color appearance and color difference evaluation in complex displays, a set of center/surround combinations of color stimuli were displayed on a color monitor and the perceived color shifts of test targets induced by its surrounds were measured using binocular matching method while systematically varying hue difference between target and surround. When the hue difference increased, the magnitude of color shift in test target decreased, but the deflection angle of color shift vector from constant hue line increased. Regression analyses of experimental data indicated that the relationship between hue angle difference and the magnitude of perceived color shifts could be described quantitatively by an exponential function, and a linear function could describe quantitative relationship between hue angle difference and deflection angle of color shift vector from constant hue line.

浅析音乐表演心理的几个因素

本文旨在研究音乐演唱艺术创造过程中演奏者的心理活动。音乐演唱心理是演奏者在长期的音乐演唱学习与音乐演唱实践中积累起来的审美经验在其大脑中形成的较稳定的神经反映通路,它一旦受到外部刺激,就会轻车熟路地对刺激进行目的、方法、特定感官的反应。在音乐演唱的各种心理因素中,理解(表现为"知觉同构");体验("审美情感");意境(情感与形象的融合);心境("灵感"产生的最佳心理状态)等是最为突出的几个有关问题。通过分析这些问题,以期对音乐演唱者进行音乐音乐表演艺术再创造有所帮助。

Selection of optimal antisense accessible sites of survivin and its application in treatment of gastric cancer

AIM: To select the optimal antisense accessible sites of survivin, a highly expressed gene in tumor tissues, in order to explore a novel approach to improve biological therapy of gastric cancer. METHODS: The 20 mer random oligonucleotide library was synthesized, hybridized with in vitro transcribed total survivin cRNA, then digested by RNase H. After primer extension and autoradiography, the antisense accessible sites (AAS) of survivin were selected. Then RNADraw software was used to analyze and choose the AAS with obvious stem-loop structures, according to which the complementary antisense oligonucleotides (AS-ODNs) were synthesized and transferred into survivin highly- expressing gastric cancer cell line MKN-45. Survivin expression was detected by RT-PCR and Western Blotting. Cellular growth activities were assayed by tetrazolium bromide (MTT) colorimetry. Cellular ultrastructure was observed by electronic microscopy, while apoptosis was detected by annexin V-FITC and propidium iodide staining flow cytometry. RESULTS: Thirteen AAS of survivin were selected In vitro. Four AAS with stem-loop structures were chosen, locating at 207-226 bp, 187-206 bp, 126-145 bp and 44-63 bp of survivin cDNA respectively. When compared with non-tranfection controls, their corresponding AS-ODNs (AS-ODN1, AS-ODN2, AS-ODN3 and AS-ODN4) could reduce Survivin mRNA levels in MKN-45 cells by 54.3±±1.1% (t= 6.12, P<0.01), 86.1±±1.0% (t= 5.27, P<0.01), 32.2±±1.3% (t= 7.34, P<0.01) and 56.2±±0.9% (t = 6.45, P<0.01) respectively, while survivin protein levels were decreased by 42.2±±2.5% (t = 6.26, P<0.01), 75.4±±3.1% (t= 7.11, P<0.01), 28.3±±2.0% (t= 6.04, P<0.01) and 45.8±±1.2% (t = 6.38,P<0.01) respectively. After transfection with 600 nmol/L AS-ODN1-AS-ODN4for 24 h, cell growth was inhibited by 28.12±±1.54% (t= 7.62, P<0.01), 38.42±±3.12% (t= 7.75, P<0.01), 21.46±±2.63% (t= 5.94, P<0.01) and 32.12±1.77% (t = 6.17, P<0.01) respectively. Partial cancer cells presented the characteristic morphological changes of apoptosis, with apoptotic rates being 19.31±1.16% (t= 7.16,P<0.01), 29.24±1.94% (t = 8.15,P<0.01), 11.87±0.68% (t = 6.68, P<0.01) and 21.68±2.14% (t = 7.53, P<0.01) respectively. CONCLUSION: The MS of survivin could be effectively selected in vitro by random oligonucleotide library/RNase H cleavage method combined with computer software analysis, this has important reference values for further studying survivin-targeted therapy strategies for gastric cancer.

Self-perceptions and social–emotional classroom engagement following structured physical activity among preschoolers: A feasibility study

Background: The well-rounded development of the child, including physical, cognitive, emotional, and social health, may be the most efficient route to well-being and academic success. The primary goal was to investigate the feasibility of implementing a 12-week structured program of physical activity(PA) incorporating cognitive, social, and emotional elements in preschool. Additionally, this study, using a within-subject design,examined the acute effects of a PA session on classroom engagement and changes on perceived competence and peer acceptance from the first to the last week of the program.Methods: Twenty-seven preschoolers(mean age = 4.2 years) completed the Pictorial Scale of Perceived Competence and Social Acceptance for Young Children before and after a twice-weekly PA program. Unobtrusive classroom observations were conducted for verbal, social, and affective engagement during the first and last week of the program, both following a structured PA session(experimental day) and on a day without PA(control day). Treatment fidelity was monitored to ensure that the intervention was delivered as designed.Results: The children exhibited longer periods of verbal and social engagement during classroom periods that followed PA sessions than on non-PA days. Children also expressed more positive affect following PA sessions during the last week of the PA program. Despite high baseline scores,perceptions of general competence increased meaningfully(η2= 0.15, p = 0.05), driven by increase in perceptions of cognitive competence(η2= 0.15,p = 0.06).Conclusion: This study demonstrates the feasibility of providing structured PA program to preschoolers. Moreover, these initial findings suggest that purposely designed, structured PA may help advance the social–emotional engagement and perceived competence of preschool children.

STUDY ON PHASE PERCEPTION IN SPEECH

The perceptual effect of the phase information in speech has been studied by auditorysubjective tests. On the condition that the phase spectrum in speech is changed while amplitudespectrum is unchanged, the tests show that: (1) If the envelop of the reconstructed speech signalis unchanged, there is indistinctive auditory perception between the original speech and thereconstructed speech; (2) The auditory perception effect of the reconstructed speech mainly lieson the amplitude of the derivative of the additive phase; (3) td is the maximum relative time shiftbetween different frequency components of the reconstructed speech signal. The speech qualityis excellent while td ＜10ms; good while 10ms＜ td ＜20ms; common while 20ms＜ td ＜35ms, andpoor while td ＞35ms.

The dual-pathway model of auditory signal processing

Similar to the visual dual-pathway model, neurophysiological studies in non-human primates have suggested that the dual-pathway model is also applicable for explaining auditory cortical processing, including the ventral ＂what＂ pathway for object identification and the dorsal ＂where＂ pathway for spatial localization. This review summarizes evidence from human neuroimaging studies supporting the dual-pathway model for auditory cortical processing in humans.

A PERSONALIZED IMAGE RETRIEVAL BASED ON VISUAL PERCEPTION

A new scheme named personalized image retrieval technique based on visual perception is proposed in this letter, whose motive is to narrow the semantic gap by directly perceiving user's visual information. It uses visual attention model to segment image regions and eye-tracking technique to record fixations. Visual perception is obtained by analyzing the fixations in regions to measure gaze interests. Integrating visual perception into attention model is to detect the Regions Of Interest (ROIs), whose features are extracted and analyzed, then feedback interests to optimize the results and construct user profiles.

Event-Related Potentials Measurement of Perception to 3D Motion in Depth

An approach to the direct measure of stereoscopic （3D） videos with different accelerations was presented, using electroen- cephalography （EEG）. In the study, subjects viewed 1-sec-long video clips with a stone ap- proaching straightforward and were required to perceive whether they were able to catch the outline of stone. Peak amplitude of each part was extracted from PO3 electrode located at the occipital region corresponding visual processing and cognition. Three components were conspicuously observed in the periods： 650-800 ms, 800-900 ms and 1150-1250 ms, which were called N310, N480 and N810 in this paper. N310 related to the perception to the initial stage of movement. Movement in- depth could be immediately perceived when initial speed was not less than 3 m/s. N480 related to the perception to acceleration/decel- eration. N810 related to the perception to the point a movement was about to vanish. Sub- jects couldn＇t perceive the outline with the fi- nal speed more than 3 rn/s. For 3 m/s, subjects were in a dilemma to judge with the detecting rate 54%. Together, component analysis com- bined with behavioral results, it was supposed that 3 m/s to be the threshold to completely perceive the outline.

Information： From Philosophic to Physics Concepts for Informational Modeling of Consciousness

Information was a frequently used concept in many fields of investigation. However, this concept is still not really understood, when it is referred for instance to consciousness and its informational structure. In this paper it is followed the concept of information from philosophical to physics perspective, showing especially how this concept could be extended to matter in general and to the living in particular, as a result of the intimate interaction between matter and information, the human body appearing as a bipolar informed-matter structure. It is detailed on this way how this concept could be referred to consciousness, and an informational modeling of consciousness as an informational system of the human body is presented. Based on the anatomic architecture of the organism and on the inference of the specific information concepts, it is shown that the informational system of the human body could be described by seven informational subsystems, which are reflected in consciousness as corresponding cognitive centers. These results are able to explain the main properties of consciousness, both the cognitive and extra-cognitive properties of the mind, like that observed during the near-death experiences and other similar phenomena. Moreover, the results of such a modeling are compared with the existing empirical concepts and models on the energetic architecture of the organism, showing their relevance for the understanding of consciousness.

Effect of practice versus information on the visual illusion

Objective The Müller-Lycr illusion is a visual illusion in which a horizontal shaft with an inward-pointing chevron （fins-out） affixed to each end is perceived longer than a shaft with outward-pointing chevrons （fins-in）. The goal of this study was to compare the effects of experience and knowledge about the Müller-Lyer illusion on participants＇ perceptual precision. Method Participants were undergraduate students （n = 108） who were not familiar with the Müller-Lyer illusion prior to the experiment. The task of participants was to adjust one movable line to make it equal to the other in Müller-Lyer figure. They received ascending and descending Müller-Lyer trials in three blocks with 20 trials each. The Experimental Group received information about the Müller-Lyer illusion prior to the third block. Results For the Experimental Group, the amount of departure in Block 3 was reduced significantly compared with previous blocks. Conclusion Knowledge about the mechanisms underlying visual illusions may play an important role in helping individuals overcome them.

The Natural Landscape of Philosophy （The Political Reflection of Heraclitus and Aristotle）

Civilizational breakthrough of ＂axial time,＂ implemented ＂human band＂ in the middle of the first millennium BC practically simultaneously in different latitudes of our planet--this is the time of the birth of science and arts, the development of language as a literary tradition, the becoming of Myth as an active picture of the world--a subjective objective, a philosophical understanding of what is the person and being that surrounds him and what he creates, and formation of knowing the world by the word and deed of the subject and, at the same time, the thinking object possessing political reflection. However, political reflection has one significant drawback--the brevity of historical memory, which should from time to time be brought to life, refreshing the milestones of events and the wisdom of others＇ reflections, so that cognitive dissonances do not arise freely （arbitrarily） or malicious aforethought of political phenomena （war, state, strategist-politician, political power, etc.）, breaking the membrane of human hostel---ethos, the philosophy of culture, art with science and the craving for work. The 20th century （and lasting the first quarter of the 21 st century）, is as a vivid illustration of endless wars and permanent revolutions, as an age of world and local conflicts, demonstrating an indissoluble connection with the ancient myth, the 20th scattered the teeth of mythology, rehashing the world and the principles of the state, destroying boundaries and the empire, unleashing new wars, multiplying ethnic conflicts, sweeping away valued reference point and changing anthropological signs, disagreeing with the essential in man： depriving the Word and the Cause.

Vision-based long-distance lane perception and front vehicle location for full autonomous vehicles on highway roads

A new vision-based long-distance lane perception and front vehicle location method was developed for decision making of full autonomous vehicles on highway roads,Firstly,a real-time long-distance lane detection approach was presented based on a linear-cubic road model for two-lane highways.By using a novel robust lane marking feature which combines the constraints of intensity,edge and width,the lane markings in far regions were extracted accurately and efficiently.Next,the detected lane lines were selected and tracked by estimating the lateral offset and heading angle of ego vehicle with a Kalman filter,Finally,front vehicles were located on correct lanes using the tracked lane lines,Experiment results show that the proposed lane perception approach can achieve an average correct detection rate of 94.37% with an average false positive detection rate of 0.35%,The proposed approaches for long-distance lane perception and front vehicle location were validated in a 286 km full autonomous drive experiment under real traffic conditions.This successful experiment shows that the approaches are effective and robust enough for full autonomous vehicles on highway roads.

Classification of Underwater Target Echoes Based on Auditory Perception Characteristics

In underwater target detection, the bottom reverberation has some of the same properties as the target echo, which has a great impact on the performance. It is essential to study the difference between target echo and reverberation. In this paper, based on the unique advantage of human listening ability on objects distinction, the Gammatone filter is taken as the auditory model. In addition, time-frequency perception features and auditory spectral features are extracted for active sonar target echo and bottom reverberation separation. The features of the experimental data have good concentration characteristics in the same class and have a large amount of differences between different classes, which shows that this method can effectively distinguish between the target echo and reverberation.

Objective measurement for image defogging algorithms

Since there is lack of methodology to assess the performance of defogging algorithm and the existing assessment methods have some limitations,three new methods for assessing the defogging algorithm were proposed.One was using synthetic foggy image simulated by image degradation model to assess the defogging algorithm in full-reference way.In this method,the absolute difference was computed between the synthetic image with and without fog.The other two were computing the fog density of gray level image or constructing assessment system of color image from human visual perception to assess the defogging algorithm in no-reference way.For these methods,an assessment function was defined to evaluate algorithm performance from the function value.Using the defogging algorithm comparison,the experimental results demonstrate the effectiveness and reliability of the proposed methods.

STUDY ON AUDIO INFORMATION HIDING METHOD BASED ON MODIFIED PHASE PARTITION

Hiding efficiency of traditional audio information hiding methods is always low since the sentience similarity cannot be guaranteed. A new audio information hiding method is proposed in this letter which can impose the insensitivity with the audio phase for auditory and realize the information hiding through specific algorithm in order to modify local phase within the auditory perception. The algorithm is to introduce the operation of "set 1" and "set 0" for every phase vectors, then the phases must lie on the boundary of a phase area after modified. If it lies on "1" boundary, it comes by set 1 operation. If it lies on "0" boundary, it comes by set 0 operation. The results show that, compared with the legacy method, the proposed method has better auditory similarity, larger information embedding capacity and lower code error rate. As a kind of blind detect method, it fits for application scenario without channel interference.