The authors investigated whether the gestalt grouping principles can be quantified and whether the conjoint effects of two grouping principles operating at the same time on the same stimuli differ from the sum of their individual effects. After reviewing earlier attempts to discover how grouping principles interact, they developed a probabilistic model of grouping by proximity, which allows mea...

Grouping in vision can be seen as the process that organizes image entities into higher-level structures. Despite its importance, there is little consistency in the statement of the grouping problem in literature. In addition, most grouping algorithms in vision are inspired on a specific technique, rather than being based on desired characteristics, making it cumbersome to compare the behavior ...

The term perceptual grouping is associated with classical principles such as similarity and proximity. This article reports induced perceptual grouping, a phenomenon that occurs when placement of a uniform set of items near a structured set induces grouping within the otherwise uniform set. For example, when items grouped pair-wise by similarity are placed near another set of unstructured items...

1. Abstract 2. Introduction 3. Grouping of musical sounds 3.1. Perceptual fusion and separation of spectral components 3.1.1. Harmonicity 3.1.2. Onset and time-varying synchronicity 3.2. Auditory continuity effects 3.3. Grouping of rapid sequences of tones 3.3.1. Grouping by pitch proximity 3.3.2. Grouping by timbre 3.3.3. Grouping by temporal proximity 4. Grouping of tone sequences from differ...

temperature restrictions on aqueous effluents dictate that streams with a temperature higher than the permitted level needed to pass through cooling systems to reduce the effluent temperature before discharge. in this study, by considering the grouping design rules based on pinch technology, an optimum design for a distributed effluent cooling system, has been developed. a counter-flow wet cool...

background: reservation of blood leads to blood wastage if the blood is not transfused. therefore, in some centers only blood type and screen are evaluated. in this study, the efficacy of a blood crossmatch-to-transfusion ratio was measured and then compared with the standard levels. methods: this prospective study was conducted during one year in a university hospital. during this period, 398 ...

this study investigates and compares the efficacy of differentiated instruction and traditional-based instruction on enhancing iranian students’ reading comprehension. eight elementary, intermediate, and advanced classrooms from 1 language institute were chosen, and based on their performance on the pretests were further divided into 4 control and 4 treatment groups. flexible grouping, tiered i...

Detection of an item changing its location from one instance to another is typically unaffected by changes in the shape or color of contextual items. However, we demonstrate here that such location change detection is severely impaired if the elongated axes of contextual items change orientation, even though individual locations remain constant and even though the orientation was irrelevant to ...