In geometry optimizations and molecular dynamics calculations, it is often necessary to transform a geometry step that has been determined in internal coordinates to Cartesian coordinates. A new method for performing such transformations, the high-order path-expansion (HOPE) method, is here presented. The new method treats the nonlinear relation between internal and Cartesian coordinates by mea...

a simple but novel and applicable approach is proposed to solve the problem of smoothing effect of ordinary kriging estimate which is widely used in mining and earth sciences. it is based on transformation equation in which z scores are derived from ordinary kriging estimates and then rescaled by the standard deviation of sample data and the sample mean is added to the result. it bears the grea...

S ince Sturtevant’s 1926 genetic proof of inversions (1) and Wright and Haldane’s discovery of conserved linkages (2), classical geneticists have compared pairs of linkage maps to infer chromosomal rearrangements and define evolutionarily conserved chromosomal segments. The data have been limited to whatever sample of the gene complement has been mapped in both sequences, and by statistical unc...

Single layer networks of adaptive logic functions have been used extensively for pattern recognition. They do, however, have limitations in as far as the output at a given time 't' is a function of the input at that time only. The system is equivalent to a conventional combinational logic circuit. If some form of feed-back is introduced, the output becomes dependent not only on the current inpu...

background: chronic non-specific low back pain is a common disorder that often has no clear mechanism. exercise therapy is an effective and safe method for treatment of chronic musculoskeletal disorders such as back pain. pilate’s and williams’ exercises are two types of distinct exercises used for the treatment of back pain, but there is no evidence for the advantage of these two exercises in ...

INTRODUCTION Many risk factors have been identified for chronic low back pain (cLBP), but only one study evaluated their interrelations. We aimed to investigate the frequency of cLBP risk factors and their interrelations in patients consulting their general practitioners (GPs) for cLBP. METHODS A cross-sectional, descriptive, national survey was performed. 3000 GPs randomly selected were aske...

STUDY DESIGN A prospective cohort study within care as usual. OBJECTIVE (1) To explore the psychometric properties of a baseline disability questionnaire designed to collect patients' expectation. (2) To analyze relations between satisfaction with care and treatment success in patients with chronic low back pain (CLBP). (3) To determine the chances of being satisfied with the received care in...

Chronic low back pain (CLBP) often proves resistant to treatment because there are different biological, psychological, and social factors that can affect its treatment. In this study, we explored Iranian women's beliefs regarding the cause of their LBP. Findings are based on four focus groups (N = 24 participants) with LBP patients. Participants articulated their causation beliefs (Explanatory...

BACKGROUND Physical activity in leisure time seems to reduce the risk of low back pain, but it is not known whether occupational activity, as recorded in a representative working population, produces a higher or lower risk. OBJECTIVE To study associations between physical activity level at work and risk of chronic low back pain. METHODS Associations were examined in a Norwegian prospective ...

[Purpose] Differences in scores on the Functional Movement Screen between patients with chronic lower back pain and healthy control subjects were investigated. [Subjects and Methods] In all, 20 chronic lower back pain patients and 20 healthy control subjects were recruited. Chronic lower back pain patients and healthy controls performed the Functional Movement Screen (deep squat, hurdle step, i...