The Contribution of Relational Factors to Line-Length Matches

Perception ◽  
1976 ◽  
Vol 5 (3) ◽  
pp. 265-278 ◽  
Author(s):  
Peter Wenderoth
Keyword(s):  
Line Length ◽  
Geometrical Illusion ◽  
Frame Size ◽  
Relational Factors ◽  
Common Framework ◽  
On Line

Both Künnapas and Rock and Ebenholtz investigated the effects of surrounding-frame size upon line-length judgments. Whereas Künnapas obtained errors of the order of 10–15%, typical of those which occur in other geometrical illusion figures, Rock and Ebenholtz reported errors closer to 100%. Rock and Ebenholtz claimed that perceived size is largely relationally determined and that this fact was obscured in Künnapas' experiment by allowing observers to compare the test lines directly with each other and within a common framework provided by the wall of the room. On the contrary, the experiments reported here suggested that errors in the Rock and Ebenholtz study may have been inflated by their use of nondirective instructions and by the confounded effects of other variables. When the Rock and Ebenholtz experiments were repeated with adequate controls over these variables, the effect of surrounding frames on line-length matches were of the order of 15–19%, similar to those of Künnapas but much smaller than those reported by Rock and Ebenholtz. The complexity of the stimuli in the Rock and Ebenholtz type of experiment is such, however, that the effects of a number of variables and possible cue conflicts remain to be investigated.

scholarly journals Genetic Parameters of Linear Type Traits Scored at 30 Months in Italian Heavy Draught Horse

Animals ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 1099
Author(s):  
Fabio Folla ◽  
Cristina Sartori ◽  
Enrico Mancin ◽  
Giuseppe Pigozzi ◽  
Roberto Mantovani
Keyword(s):  
Animal Model ◽  
Genetic Parameters ◽  
Genetic Correlations ◽  
Line Length ◽  
Young Age ◽  
Head Size ◽  
Linear Type ◽  
Frame Size ◽  
Type Traits ◽  
Genetic Trends

The Italian Heavy Draught Horse (IHDH) breed is selected based on linear type traits (LTT) evaluated at young age on six-month-old foals. However, animals retained for reproduction are scored also at adults age (about 30 months), and the evaluation is mandatory for the final official admission to the stud book of candidate mares and stallions. This study aimed to estimate genetic parameters of LTT scored at 30 months to consider if they are feasible for selection instead of using foal data and to reduce costs of selection plan. Data included 19 years of evaluation for 14 LTT and an overall score. Analyses were performed on 5835 females and 856 males via animal model. The heritability ranged from 0.03 (upper line length) to 0.40 (frame size). Traits of selection interest (head size and expression; temperament/movement; fleshiness; fore diameter; rear diameter) reported heritability between 0.21 and 0.31. High genetic correlations were obtained among traits related to muscular development, 0.73 on average. Positive genetic trends were found in traits of selection interest, already selected from foal type trait data. Accounting for genetic parameters estimated in adult animals instead in foals is feasible in IHDH selection.

Automatic epileptic seizure detection in EEGs based on line length feature and artificial neural networks

2010 ◽  
Vol 191 (1) ◽  
pp. 101-109 ◽  
Author(s):  
Ling Guo ◽  
Daniel Rivero ◽  
Julián Dorado ◽  
Juan R. Rabuñal ◽  
Alejandro Pazos
Keyword(s):  
Neural Networks ◽  
Artificial Neural Networks ◽  
Epileptic Seizure ◽  
Seizure Detection ◽  
Line Length ◽  
Epileptic Seizure Detection ◽  
On Line ◽  
Artificial Neural

scholarly journals The End of the Line for a Brain-Damaged Model of Unilateral Neglect

1997 ◽  
Vol 9 (2) ◽  
pp. 171-190 ◽  
Author(s):  
Michael C. Mozer ◽  
Peter W. Halligan ◽  
John C. Marshall
Keyword(s):  
Right Hemisphere ◽  
Orientation Angle ◽  
Line Length ◽  
The Body ◽  
Line Bisection ◽  
Simple Task ◽  
Unilateral Neglect ◽  
Related Disorder ◽  
On Line ◽  
The Right

For more than a century, it has been known that damage to the right hemisphere of the brain can cause patients to be unaware of the contralesional side of space. This condition, known as unilateral neglect, represents a collection of clinically related spatial disorders characterized by the failure in free vision to respond, explore, or orient to stimuli predominantly located on the side of space opposite the damaged hemisphere. Recent studies using the simple task of line bisection, a conventional diagnostic test, have proven surprisingly revealing with respect to the spatial and attentional impairments involved in neglect. In line bisection, the patient is asked to mark the midpoint of a thin horizontal lie on a sheet of paper. Neglect patients generally transect far to the right of the center. Extensive studies of line bisection have been conducted, manipulating-among other factors-line length, orientation, and position. We have simulated the pattern of results using an existing computational model of visual perception and selective attention called MORSEL (Mozer, 1991). MORSEL has already been used to model data in a related disorder, neglect dyslexia (Mozer & Behrmann, 1990). In this earlier work, MORSEL was “lesioned” in accordance with the damage we suppose to have occurred in the brains of neglect patients. The same model and lesion can simulate the detailed pattern of performance on line bisection, including the following observations: (1) no consistent across-subject bias is found in normals; (2) transection displacements are proportional to line length in neglect patients; (3) variability of displacements is proportional to line length, in both normals and patients; (4) position of the lines with respect to the body or the page on which they are drawn has little effect; and (5) for lines drawn at different orientations, displacements are proportional to the cosine of the orientation angle. MORSEL fails to account for one observation: across patients, the variability of displacements for a particular line length is roughly proportional to mean displacement. Nonetheless, the overall fit of the model is sufficiently good that we believe MORSEL can be used as a diagnostic tool to characterize the specific nature of a patient's deficit, and thereby has potential down the line in therapy.

scholarly journals Research of dependance of harmful interference in systems of broadband access over electrical wiring network on line length

2016 ◽  
Vol 20 (6) ◽  
pp. 65-70
Author(s):  
А. Г. Лашко ◽  
С. А. Заблоцький ◽  
Л. М. Ляховецький ◽  
О. К. Яневич
Keyword(s):  
Line Length ◽  
Broadband Access ◽  
On Line ◽  
Electrical Wiring

Influence of practical operation of power transmission lines on line length

2014 ◽  
Author(s):  
Qi Wang ◽  
Han Zhang ◽  
Shen Wen ◽  
Gehao Sheng ◽  
Xiuchen Jiang ◽  
...  
Keyword(s):  
Transmission Lines ◽  
Power Transmission ◽  
Line Length ◽  
Power Transmission Lines ◽  
Practical Operation ◽  
On Line

scholarly journals Assessment of the Effect of Left Unilateral Spatial Neglect on Line Length Discrimination Tasks.

1997 ◽  
Vol 17 (4) ◽  
pp. 285-294
Author(s):  
Koichiro Inaki ◽  
Hajime Hirabayashi ◽  
Makoto Izawa
Keyword(s):  
Line Length ◽  
Spatial Neglect ◽  
Unilateral Spatial Neglect ◽  
On Line

scholarly journals Identifikasi Bidang Gelincir Dengan Eksplorasi Geolistrik Dalam Upaya Mitigasi Bencana Alam Tanah Longsor Di Desa Tinoor

Jurnal MIPA ◽  
2018 ◽  
Vol 7 (2) ◽  
pp. 1
Author(s):  
Mercyas Tunena ◽  
As’ari ◽  
Gerald H. Tamuntuan
Keyword(s):  
Slip Surface ◽  
Line Length ◽  
Subsurface Structure ◽  
Cross Sectional ◽  
Main Road ◽  
Resistivity Method ◽  
On Line ◽  
Geoelectric Resistivity ◽  
Landslide Disaster

Penelitian ini bertujuan untuk memetakan struktur bawah permukaan di Jalan Raya Manado - Tomohon, di Desa Tinoor  untuk mencari keberadaan bidang gelincir sebagai mitigasi bencana alam tanah longsor. Pengukuran dalam penelitian ini dilakukan dengan menggunakan resistivitymeter MAE 612-EM, dengan jumlah elektroda yang dipakai 32 buah, spasi 2 meter, panjang lintasan 64 meter, jumlah ,lintasan 4, dan menggunakan metode geolistik resistivity konfigurasi Wenner Alfa. Data dengan format DAT diolah menggunakan software notepad dan res2dinv. Hasil pengolahan adalah tampang lintang resistivity 2D bawah permukaan yang menggambarkan keberadaan bidang gelincir.Hasil penelitian diperoleh lapisan lempung pasiran yang merupakan bagian dari bidang gelincir dengan resistivitas (30 - 215) Ω.m. Lokasi lapisan lempung pasiran pada lintasan 1 didapatkan 3 lokasi, lintasan 2 didapatkan 4 lokasi, lapisan 3 didapatkan 1 lokasi, dan lintasan 4 didapatkan 2 lokasi. Lokasi lempung pasiran terdapat pada kedalaman  (1 - 6) meter dengan panjang (12 - 14) meterThis research aims to map the subsurface structure on the Manado - Tomohon main road, in Tinoor Village to find the existence of the slip surface as the mitigation of landslide disaster. The measurements in this research were carried out by using the MAE 612-EM resistivitymeters, with 32 electrodes, 2 meters spacing, 64 of meter line length, number of line 4, and using  Wenner Alfa configuration geoelectric resistivity method. Data with DAT format is processed using notepad and res2dinv software's. The result of this prosessing is a cross-sectional resistivity 2D, that describe the existence of the slip surface.The result was obtained that the sandclay layer which is part of the slip surface with resistivity 30 - 215 ohm meter. The location of sandclay layers on line 1 was found 3 locations, line 2 was found 4 locations, line 3 was found 1 location, and line 4 was found 2 locations. The location of the sandclay is at depth (1-6) meters with length (12-14) meters.

The on-line use of histogram data for high-speed correction and alignment of electron microscope images

1984 ◽  
Vol 42 ◽  
pp. 556-557
Author(s):  
William Krakow
Keyword(s):  
Power Spectrum ◽  
High Speed ◽  
Direct Memory Access ◽  
Digital Television ◽  
Contrast Transfer Function ◽  
The Past ◽  
High Resolution Tem ◽  
On Line ◽  
Correction Of Astigmatism ◽  
The Fourier Transform

In the past few years on-line digital television frame store devices coupled to computers have been employed to attempt to measure the microscope parameters of defocus and astigmatism. The ultimate goal of such tasks is to fully adjust the operating parameters of the microscope and obtain an optimum image for viewing in terms of its information content. The initial approach to this problem, for high resolution TEM imaging, was to obtain the power spectrum from the Fourier transform of an image, find the contrast transfer function oscillation maxima, and subsequently correct the image. This technique requires a fast computer, a direct memory access device and even an array processor to accomplish these tasks on limited size arrays in a few seconds per image. It is not clear that the power spectrum could be used for more than defocus correction since the correction of astigmatism is a formidable problem of pattern recognition.

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