Cognitive engagement during reading on digital tablet: Evidence from concurrent recordings of postural and eye movements

The present study utilised a novel combination of eye movement and motion capture recordings to examine cognitive engagement during reading on a hand-held tablet computer. Participants read a multiple-page text with a specific task in mind and after reading recalled the main contents of text from memory. The results showed that head distance from screen was slightly shorter, and readers spent longer time reading task-relevant than irrelevant segments of text and had better memory for task-relevant than irrelevant text information, indicating that there are task-induced momentary changes in engagement during reading. Moreover, head motion and individual fixation durations decreased during the course of reading of relevant segments, and even though there was an overall increase in table motion during reading, the slope of this increase was steeper for irrelevant than relevant text segments. These results suggest that readers become more engaged with relevant and less engaged with irrelevant text segments across the text. The novel methodological combination of eye and postural movements seems to provide valuable information about cognitive engagement during reading in digital environments. The cumulation of evidence from this and previous studies suggests that reading on a tablet affords different interactions between the reader and the text than reading on a computer screen. Reading on a tablet might be more similar to reading on paper, and this may impact the attentional processes during reading.

Methodical aspects of the montbeliarde breed gene pool in Ukraine creation

The methodical aspects of the Montbeliarde breed gene pool in Ukraine are presented. The evaluation and selection of animals was carried out on the basis of the dairy productivity and tribal value of the ancestors, the type of exteriors, the overall development of the body, the period of cohort, and also the parentage. Selected and brought 100 heads of the cows of the Monglereid breed. As a result of growth, development, the type of body structure, the animals corresponded to the standard of breed requirements and were pregnant for 3–4 months. The parents type productivity indices (ISU) was 98–147. More than 50% of them were ranked in the top 20 best breeders. The milk productivity of the heifers mathers on 305 days of the first lactation ranged from 5300 to 9100 kg of milk, with a fat content of 3.9–4.4% and a protein of 3.3–3.7%.Genealogical structure of the herd (100 cows and 64 heifers, which were obtained at the farm PLAE "Zhatkivske") is represented by 5 genealogical bloodlines. The most numerous is the bloodline Charmant – Ideal – Helios 15.421 (26 cows and 13 heifers). The Charvant sire was quite widely used in the breeding stock virtually of all bloodlines. This line is developed through the bulls Corail 3971002640, Cardian 7191071104106 and Isangrin 6393018001 (scheme 1). No less numerous is the Pirates 11,695 (25 caws and 6 heifers) bloodline, which has two powerful sublines: Novac 17136 and Tabarin 3967923962. The development of these independent branches continues through the bulls: Rhum 7080007171, Ezozo 0189014533 Martien 7176060311 Cantadou, Verglas 3984014417, Leguyer 7495022208, Bois Levin 0186006232.From the genealogical bloodline Oceano 11594 have been 23 caws selected, from which already 13 heifers were received. The bloodline has been developed through the bulls: Faucon 3990016792, Natif 3997030107, Oxalin 2598012281. Oxbou. Based on the old bloodline Ideal 9128, a new bloodline Osiris – Orkan 78315, is developed through the bulls: Lusignan, Jardin 2574010156, Tilleul 3912920526, Boulogne 7086000198 and represented by 15 individuals.The most numerous in the past century in the breed, the Bravo 12.571 bloodline has narrowed significantly and is currently developing only through the branch Debount 2572016541, his sons: Tafia 2582003300 and Tartars 7082004021 and their grandsons: Polichinel 2199011839, Maldini 1596099083 and others. At the moment, it's a disappearing bloodline, so the best bulls as Ezozo 0189014533, Bois Le Vin 0186006232 and the most promising bulls from Pirate 11.695 bloodline are used widely on the cows of this line. The farm brought 6 heavens of this line, from which 3 daughters were taken. In order to prevent the rapid growth of inbreeding, in recent years, in the breed used cross the most distant lines. The average expectation of 31 firstborns for 305 days of lactation in the PLAE "Zhatkivske" was 7298 (limits 6544–8839) kg.Thus, the breeding stock imported into the PLAE "Zhatkivskoe" is rather high-yielding and reflects the gene pool of the Monglereid breed. A plan for individual fixation, which is implemented in the herd, is developed to provide linear breeding, which in the complex forms the basis for the creation of the Monglereid breeder.

Cyanolichens: a link between the phosphorus and nitrogen cycles in a Hawaiian montane forest

Low phosphorus (P) supply frequently has been shown to limit the abundance and activity of nitrogen (N)-fixing organisms, potentially constraining N inputs to ecosystems. Previous research in a montane Hawaiian forest has shown that ground-level P-fertilization led to significant increases in the population size of epiphytic N-fixing lichens (cyanolichens), as well as a shift in community composition from crustose to leafy species. In this study, we ask whether these changes in the cyanolichen community have resulted in increased N inputs to the forest, and also whether the very high levels of P in the canopy of P-fertilized forest stimulate individual lichen fixation rates over those of lichens from a nearby unfertilized reference forest. We used acetylene reduction (AR) assays to measure the fixation rates of 14 cyanolichen species from P-fertilized forest, and calibrated these rates by measuring15N2fixation incorporation in four species. We found that the ratio of acetylene reduced to N fixed ranged from 2.4 ± 0.4 inPseudocyphellaria crocatato 9.3 ± 2.4 inLeptogium denticulatum. Nitrogen fixation rates in the P-fertilized forest ranged from 0.64 ± 0.05 nmol N cm−2h−1inNephroma helveticumto 3.97 ± 1.48 nmol N cm−2h−1inParmeliella nigrocincta. Fixation rates did not vary greatly among species from P-fertilized forest. We compared these P-fertilized rates to those of 10 species from the reference forest, and found that mass-based fixation rates of P-fertilized lichens were not greater than those of lichens from the unfertilized forest. Using the measured AR rates, we estimate that the P additions increase cyanolichen N inputs to the forest 30-fold, from ~0.3 kg N ha−1y−1to ~9 kg N ha−1y−1. These results suggest that P additions to this ecosystem increase N inputs primarily by increasing the abundance of cyanolichens, and that shifts in cyanolichen community composition and changes in individual fixation rate were of lesser importance in determining ecosystem N inputs.

Time-Dependent Changes In Viewing Behavior On Similarly Structured Web Pages

This article focuses on the impact of observation time and web page structure on viewing behavior. 63 subjects observed similarly structured pages of a popular commercial internet shop. Eye movements were recorded and analyzed regarding several saccade parameters, the individual fixation distribution by means of a progressive entropy approach, and the within- as well as between-subject congruency of fixation distributions. Our results show that viewing behavior significantly changed while subjects observed individual web pages. In contrast, we only found little evidence for a change in eye movements across web pages and hence for an attention-related schema building. In this context, we also provide an example of the impact of web page elements’ position on fixation probability.

Arthrodesis of the first metatarsophalangeal joint. Current recommendations

Fusion of the first metatarsophalangeal joint is a time-honored, effective procedure for multiple conditions. Numerous fixation techniques have been described over the years. The authors provide an extensive overview of specific fixation techniques used throughout the past 6 years. Emphasis is placed on the potential advantages and disadvantages of the individual fixation techniques.

Eye Movement Strategies Involved in Face Perception

Recordings were made of the eye fixations of three subjects in two tasks involving black-and-white photographs of faces. In the first task, subjects matched a test face with a previously viewed target face; in the second task, subjects compared two simultaneously presented faces. The eye movements were recorded with a corneal reflection technique. Each subject showed an individual fixation strategy for the tasks; in particular each subject had one or more preferred facial features which were viewed foveally in both tasks. The subjects also showed some tendency to use a regular sequential pattern of eye movements. However, the sequences used differed from one task to the other. Although some aspects of the results support the scanpath hypothesis of Noton, it is suggested that an alternative interpretation is possible.