... khi HKVĐH phá hủy dọc theo mặt ứng suất pháp lớn nhất, 90oTθ= , ta mới có T oσ σ=[4]; Tuy vậy, hầu hết các HKVĐH phá hủy theo mode trượt với các góc ... xứng độ bền khác nhau có thể được phân bổ theo các giá trị cao tương đối của tỷ số 0.385 - 0.707o oaτ σ= = tuân theo tiêu chuẩn phá hủy thống nhất.[4] Ở ... sao dưới tác dụng ứng suất kéo, HKVĐH lại không bị phá hủy theo mặt ứng suất pháp tuyến lớn nhất ( 90oTθ= ) hoặc không phá hủy theo trục ứng suất trượt lớn nhất ( 45oTθ= )? Bản chất...
... bullet-proof fashion that willstand the test of time. The second, and for the working mathematician the most important, aspect of proof is that the proof of a new theorem explainswhy the result ... one symptom ofthe ongoing battle. The idea of “proof” certainly appears in many aspects of life other thanmathematics. In the courtroom, a lawyer (either for the prosecution or the defense) ... contains papers with mathematical proofs. A friend of mine recently had a paper rejected there for lack of a proof.0.2. THE CONCEPT OF PROOF 5and surprises.0.2 The Concept of ProofIt is well to...
... Crossing the Quality Chasm (2001). In the face ofthe growing awareness generated aboutthenature and implications ofthe gap between healthcare practice and the evidence base, the IOM Roundtable ... MEDICINE of the national domestic agenda, the choice of EBM by the IOM Council as the theme ofthe 2007 IOM Annual Meeting underscores its centrality and importance to healthcare improvement and offers ... Hayward, associate professor ofthe Departments of Medicine and Public Health Sciences and director ofthe Centre for Health Evidence (CHE) at the University of Alberta, noted that in the messy informational...
... question 7 (about the future of CSR and environment issue) with the IQR is 1 while the IQR of Beverage industry =2. The reason may be due to thenatureof their business and the ways their business ... performance of those companies as they affect the profit and activities of companies. On the other hand, Government employee is called as the “agency of Government” as they exam the process of completing ... but the price of product since they have the whole family to carry hence they have to remain the stable spending of their family. However, old people were born and grown up in the war, they...
... the councils ofthe National Academy of Sciences, the National Academy of Engineering, and the Institute of Medicine. The members of the committee responsible for the report were chosen for their ... secure the services of eminent members of appropriate professions in the examination of policy matterspertaining to the health ofthe public. The Institute acts under the responsibility given to the ... decades could be one ofthe most excitingperiods in the history of physics.One ofthe great scientific achievements ofthe 20th century was the develop-ment ofthe Standard Model of elementary particle...
... because the mechanics ofthe system, with the splines moving freely along the nails, allows the total bending energy ofthe spline to settle down at its minimum [30]. I marked the contours of two ... distribution of spots. The lighter a particular area ofthe image is, the higher the density of random spots, or “events”, the algorithm generates in this area. Fig. 9 shows the output ofthe program used ... that echoes the symmetry ofthe buckyball grow through the structure. The orientation ofthe buckyball was chosen such that two opposite hexagons, one at the bottom and one on the top, are...
... by dem-onstrating the effects of therapies in particular patients atparticular times [2-4]. However, the scope and number of instruments can be confusing. The aim of all of them isclear: trying ... facets of improvement or whether there is significant overlap orredundancy in their measurements from a global perspec-tive. The objective ofthe current study was thus to analyze nine of the ... and therefore representative ofthe entireTKAR cohort. The sensitivity ofthe factors' mean values was examinedby comparing the "factor analysis cohort" calculations foreach of...
... pathologicalfracture in the course ofthe disease.Plain radiograph ofthe left shoulder at the first presentationFigure 1Plain radiograph ofthe left shoulder at the first pres-entation. The radiograph ... registrar who attributed the pain,swelling and the fracture ofthe clavicle to the mechanism of injury and advised follow-up in one month's time. The patient failed to attend the follow-up appointmentand ... ofthe left clavicle, and no associated neu-rovascular deficit. The rest ofthe shoulder examinationwas normal. A plain radiograph of her left shoulderrevealed an undisplaced fracture of the...
... ScienceDating the EarthOne ofthe greatest scientific triumphs of the last two centuries has been the discovery of the vast expanse of geologic time. Earlymethods of calculating the age ofthe earthrelied ... been the abandon-ment of one notion about stability afteranother: that the earth was the center of the universe, that the world’s living thingsare unchangeable, that the continents of the earth ... the beauty andmajesty ofthe heavens, but by a deeperunderstanding ofnature and by an appreci-ation ofthe power ofthe human intellect.This triumph ofthe human mind says agreat deal about...
... toshow the relative positions and movements of the sun, planets, and moon as they cir-cled the earth. As the center ofthe uni-verse, the earth was a sphere in the center of the orrery. The other ... of the last two centuries has been the discovery of the vast expanse of geologic time. Earlymethods of calculating the age ofthe earthrelied on measures ofthe rate of sedimenta-tion or the ... the beauty andmajesty ofthe heavens, but by a deeperunderstanding ofnature and by an appreci-ation ofthe power ofthe human intellect.This triumph ofthe human mind says agreat deal about...