PURPOSE To assess associations between refractive error (hyperopia, myopia, and spherical equivalent [SEq]) and age-related maculopathy (ARM) in an older population. METHODS A population-based survey examined 3654 people aged 49 years or older, 82% of whom were permanent residents in an area west of Sydney, Australia. Participants had a detailed eye examination, including standardized refract...

replacement of a tractor is an influential factor affecting timely farm operation. the accurate prediction of repair and maintenance costs is essential to selection of a replacement model. this study used empirical data for 60 two-wheel drive (2wd) tractors from astan ghods-e razavi agroindustry. the types and numbers of tractors used were the massey ferguson 285 (17), fiat (10), john deere 314...

in many area of medical research, a relation analysis between one response variable and some explanatory variables is desirable. regression is the most common tool in this situation. if we have some assumptions for such normality for response variable, we could use it. in this paper we propose a nonparametric regression that does not have normality assumption for response variable and we focus ...

Introduction: In order to make a dimensional proportion between human and equipment or environment, anthropometric data bank is essential. Anthropometry has an important role in industrial management and ergonomic design. This information is needed to be collected regularly in every society. The purpose of this study was to determine arm length to height ratio according to gender in adult...

This paper present a new developed technique for robotic surgical model with high flexibility used in Total Knee Replacement (TKR) surgery. The proposed model used robot arm assisted technique to play the role of computer assisted surgery (CAS). Most famous type’s orthopedic surgery equipments used navigation system. The system provide surgeon with extra support, as it help optimizing the impla...

BACKGROUND Patients undergoing proximal femoral replacement for tumor resection often have compromised hip abductor muscles resulting in a Trendelenberg limp and hip instability. Commercially available proximal femoral prostheses offer several designs with varying sites of attachment for the abductor muscles, however, no analyses of these configurations have been performed to determine which de...

BACKGROUND We reviewed our experience to investigate the determinants of paraplegia/paraparesis after endovascular stent-graft repair of the thoracic aorta, to assess the influence of the artery of Adamkiewicz (ARM) detected by preoperative magnetic resonance angiography (MRA) and to identify patients at risk. METHODS Over a 5-year period (March 2001-June 2006), 149 patients underwent electiv...

Healthy walking is characterized by pronounced arm swing and axial rotation. Aging effects on gait speed, stride length and stride time variability have been previously reported, however, less is known about aging effects on arm swing and axial rotation and their relationship to age-associated gait changes during usual walking and during more challenging conditions like dual tasking. Sixty heal...