Seeking one's heading through eye movements

A study of eye movements during simulated travel toward a grove of four stationary trees revealed that observers looked most at pairs of trees that converged or decelerated apart. Such pairs specify that one's direction of travel, called heading, is to the outside of the near member of the pair. Observers looked at these trees more than those that accelerated apart; such pairs do not offer trustworthy heading information. Observers also looked at gaps between trees less often when they converged or diverged apart, and heading can never be between such pairs. Heading responses were in accord with eye movements. In general, if observers responded accurately, they had looked at trees that converged or decelerated apart; if they were inaccurate, they had not. Results support the notion that observers seek out their heading through eye movements, saccading to and fixating on the most informative locations in the field of view.

Electromyographic validation of the double pulley equipment during movements of the lower limbs

The double pulley equipment was tested on ten male volunteers during contraction of the semitendinosus and biceps femoris (caput longum) muscles in the following movements of the lower limbs: 1) hip extension with extended knee and erect trunk, 2) hip extension with flexed knee and erect trunk, 3) hip extension with flexed knee and erect trunk, 3) hip extension with extended knee and inclined trunk, 5) hip abduction along the midline, 7) hip abduction with extension beyond the midline, 8) adduction with hip flexion beyond the midline, 8) adduction with hip flexion beyond the midline, and 9) adduction with hip extension beyond the midline. The myoelectric signals were taken up by Lec Tec surface electrodes connected to a 6-channel Lynx electromyographic signal amplifier coupled with a computer equipped with a model CAD 10/26 analogue digital conversion board and with a specific software for signal recording and analysis. The semitendinosus and biceps femoris muscles presented the highest potentials in movements 1; 2; 7, 8 and 9, whereas the potentials in the remaining movements were negligible. The pattern of activity of the semitendinosus and the biceps femoris was similar in exercises 1, 2, 3, 4 and 8. The potentials of the semitendinosus prevailed in movements 5, 6 and 7, and the strongest potentials observed in movement 9 were those of the biceps femoris.

Electromyographyc evaluation of movements of lower limb in double pulley system equipment: Comparison between gastrocnemius (caput laterale) and gluteus maximus

It was evaluated movements of lower limb in the double pulley system equipment on ten male volunteers during contraction of gastrocnemius (caput laterale ) and gluteus maximus muscles in the following movements: 1) hip extension with extended knee and erect trunk, 2) hip extension with flexed knee and erect trunk, 3) hip extension with flexed knee and erect trunk, 3) hip extension with extended knee and inclined trunk, 5) hip abduction along the midline, 7) hip abduction with extension beyond the midline, 8) adduction with hip flexion beyond the midline, 8) adduction with hip flexion beyond the midline, and 9) adduction with hip extension beyond the midline. Myoelectric signals were taken up by Lec Tec surface electrodes connected to a 6-channel Lynx electromyographic signal amplifier coupled with a computer equipped with a model CAD 10/26 analogue digital conversion board and with a specific software for signal recording and analysis. We observed weak gastrocnemius muscle activity for all movements studied. In the case of gluteus maximus, the most important potentials were observed for movement 2, while for the remaining movements the actions were of reasonable intensity. Compared to gluteus, gastrocnemius was less required for all movements.

International capital movements

Includes bibliography

Methodology for the comparison of military expenditures

Includes bibliography

Evaluation of movements of lower limbs in non-professional ballet dancers: Hip abduction and flexion

Background: The literature indicated that the majority of professional ballet dancers present static and active dynamic range of motion difference between left and right lower limbs, however, no previous study focused this difference in non-professional ballet dancers. In this study we aimed to evaluate active movements of the hip in non-professional classical dancers.Methods: We evaluated 10 non professional ballet dancers (16-23 years old). We measured the active range of motion and flexibility through Well Banks. We compared active range of motion between left and right sides (hip flexion and abduction) and performed correlation between active movements and flexibility.Results: There was a small difference between the right and left sides of the hip in relation to the movements of flexion and abduction, which suggest the dominant side of the subjects, however, there was no statistical significance. Bank of Wells test revealed statistical difference only between the 1st and the 3rd measurement. There was no correlation between the movements of the hip (abduction and flexion, right and left sides) with the three test measurements of the bank of Wells.Conclusion: There is no imbalance between the sides of the hip with respect to active abduction and flexion movements in non-professional ballet dancers. © 2011 Valenti et al; licensee BioMed Central Ltd.

New records and distribution extensions of three species of Mesoclemmys Gray, 1863 (Testudines: Chelidae) in Mato Grosso state, Brazil, with observations on terrestrial movements

Distribution patterns of most of the 20 Neotropical freshwater turtles belonging to the family Chelidae are usually based on few locality records. We here report on vouchered records of three species of the chelid genus Mesoclemmys in the Brazilian state of Mato Grosso. Presence of M. vanderhaegei is confirmed for the Amazon River Basin, and M. gibba and M. raniceps are recorded in Mato Grosso for the first time. © 2012 Check List and Authors.

Post-conflict peace-building: a challenge for the United Nations

Includes bibliography

Capital movements and external financing

Includes bibliography

Colombia: social capital, social movements and sustainable development in Cauca

Includes bibliography

Review and appraisal of the achievements of the United Nations Decade for Women: Equality, Development and Peace in the Caribbean

Contiene una evaluacion de los logros alcanzados y problemas encontrados en el cumplimiento de las metas y objetivos del decenio de las NU para la mujer, en particular en el area salud, empleo y educacion, y recomienda una estrategia para el ano 2000.

Report on the Meeting of delegates from CDCC countries attending the Regional Meeting of Latin America and the Caribbean Preparatory to the World Conference to Review and Appraise the Achievements of the United Nations Decade for Women: Equality, Development and Peace = Informe de la Reunión de delegados de los países del CDCC que participaron en la Reunión Regional de América Latina y el Caribe Preparatoria de la Conferencia Mundial para el Examen y Evaluación de los Logros del Decenio de las Naciones Unidas para la Mujer: Igualdad, Desarrollo y Paz

Informa sobre la reunion realizada con el objetivo de intercambiar informacion y buscar una posicion comun del Caribe en los temas a considerar en la Reunion Regional: problemas y logros alcanzados en la region en la implementacion de las metas y objetivos del decenio de las NU para la mujer, estrategia para el ano 2000.

Informe de la Reunión Regional de América Latina y el Caribe Preparatoria para la Conferencia Mundial para el Examen y la Evaluación de los Logros del Decenio de las NU para la Mujer: Igualdad, Desarrollo y Paz = Report of the Regional Meeting for Latin America and the Caribbean in Preparation for the World Conference to Review and Appraise the Achievements of the United Nations Decade for Women: Equality, Development and Peace = Rapport de la Réunion Régionale de l'Amérique latine et des Caraïbes Préparatoire de la Conférence Mondiale Chargée d'Examiner et d'Evaluer les Résultats de la Décennie des Nations Unies pour la Femme: Egalité, Développement et Paix

Contiene: asistencia y organizacion de los trabajos, resumen de los debates, y evaluacion del decenio y estrategias y medidas concretas de ejecucion para el adelanto de la mujer hasta el ano 2000, aprobadas por la Reunion.