transverse vibration of a beam

... '•rank ON o f length R rotates around o w ith a c o n sta n t a n g u la r v e lo c ity n and translates slo tted bar BA of len gth L along slides 1.1 We shall ta k e the o rig in of the y axis ... various va lu es of param eters and the stab ility of vib ration is in v estig a ted , '"he rotating m otion of the p e n d u lu m an d its sta b ility ,a r e also considered S I E Q U A TIO N OF M ... vertically up The p o sitio n of the pendulum w ill be specified by angle i an d a lo a d Af of m ass m (p th a t A M m akes w ith vertical axis (F ig l) T he kinetic and p o ten tial energies of...

Ngày tải lên: 08/04/2015, 15:30

... load A simply supported beam composed of Aluminum (Al – metal phase) core and AluminumAlumina (Al-Al O ) FG layers is considered in this section The material data for Aluminum and Alumina are as ... deflections of an FG metal-ceramic beam considerably reduces comparing to that of the pure beam In addition, an FG beam induced by a soft core may improve the dynamic behavior of the structure ... the beam The numerical results have shown that the vibration characteristics of the beam, including the fundamental frequency and dynamic deflection factor, are strongly affected by the material...

Ngày tải lên: 08/06/2016, 13:00

... mechanical characterization of the primary bone-prosthesis stability In a previous study we demonstrated the feasibility and validity of a vibration analysis technique for the assessment of the ... appropriate software (Pimento 5.2, LMS International, Haasrode, Belgium) The vibration analyser generates the excitation signal which is amplified and sent to the shaker The vibration analyser, ... 30:278-284 Lannocca M, Varini E, Cappello A, Cristofolini L, Bialoblocka E: Intraoperative evaluation of cementless hip implant stability: A prototype device based on vibration analysis Med Eng...

Ngày tải lên: 20/06/2014, 01:20

... the impact of sidelobes and the effect of any specific beam patterns Reference [17] provides a beamforming model with a triangular pattern to characterize the mainlobe of a beam In [18], a beamforming ... as ISM band, beamforming is expected to play an important role Beamforming uses arrays of antennas to control the RF radiation pattern When receiving a signal, beamforming can increase the gain ... n,l 4.2 Partial-Band Interference Partial-band interferers occupy part of the hoped bandwidth A partial-band interferer to a DS/FH signal is the same as a partial-band jammer to a spread spectrum...

Ngày tải lên: 21/06/2014, 19:20

... Pilepich MV, et al.: Early initiation of salvage hormone therapy influences survival in patients who failed initial radiation for locally advanced prostate cancer: A secondary analysis of RTOG protocol ... Brachytherapy and Transient PSA Elevations Following HDR Brachytherapy and External Beam Radiation Pt = Patient Init PSA = Initial PSA Patients 1, 3, and were received hormone therapy for 7, and ... beam radiation therapy (EBRT) and/or brachytherapy are mainstays of local therapy Low dose rate (LDR) brachytherapy, with permanently implanted radioactive seeds, [2-6] and HDR brachytherapy, with...

Ngày tải lên: 09/08/2014, 10:21

... surgical treatment modality Am J Orthod Dentofacial Orthop 1997, 111:28-33 McNamara CM, O’Riordan BC, Blake M, Sandy JR: Cleidocranial dysplasia: radiological appearances on dental panoramic radiography ... this article as: Dalessandri et al.: Advantages of cone beam computed tomography (CBCT) in the orthodontic treatment planning of cleidocranial dysplasia patients: a case report Head & Face Medicine ... tomography role in diagnosis and treatment of impacted canine patient’s: a case report Minerva Stomatol 2010, 59(6):363-76 Kuroda S, Yanagita T, Kyung HM, Takano-Yamamoto T: Titanium screw anchorage...

Ngày tải lên: 11/08/2014, 20:20

... Critical Care Vol 11 No Dellinger et al Figure An example of a normal vibration response image A maximal energy image frame from a vibration response image recording of a healthy, 30-yearold, male ... revealing rather low intra-patient variability (CV of less than 10% for 95% of the data and CV of less than 5% for 80% of the data) Furthermore, the lack of randomization did not create a notable ... analysis Normalization was applied to a predetermined range of frames Within a frame, the areas with the highest vibration energy are represented as black in a gray-level scale and the areas with...

Ngày tải lên: 13/08/2014, 03:20

... shows a typical cross section of a beam- sample interaction for a helium ion beam, in comparison with interactions for a gallium ion beam and an electron beam of the same beam diameter at 30 keV ... profile data are extracted from the two rectangular areas for beam spot size analysis in horizontal and vertical directions 83 Figure 3.20 Shape of the line scan in scanning a Gaussian ... environment of Au NPs; b) Total RBS Au image of HeLa cell cultured in an environment of Au NPs; c) Surface RBS Au image of HeLa cell cultured in an environment of Au NPs d) Subsurface RBS Au image of...

Ngày tải lên: 09/09/2015, 10:15

... field amplitude on the beam axis, ω is the oscillation frequency, ρ is the radial distance from the z-axis, wL is the waist of the Gaussian beam An ideal Gaussian beam has a transverse profile that ... the transverse overlap, the axis of the two beams are aligned to an uncertainty better than 15 mm at a plane about 10 cm away from the cuvette and better than 0.15 mm at a plane about m away on ... optical fibres which not only serve as an easy way to guide the beams to the atom in the vacuum chamber, but also cleans up the spatial mode of the beam to that of the fundamental Gaussian mode...

Ngày tải lên: 09/09/2015, 17:54

... two span continuous beam with cracks are calculated and presented in Table 4.1 Table 4.1 Natural frequencies of two-span cracked beam Cracking scenarios Uncracked Eq.(4.1.4) Ref.[36] Span Span uncracked ... Khiem, Pham Xuan Khang, Phi Thi Hang (2014) A method for calculating natural frequencies of multispan beam with arbitrary number of cracks Mechanics Nationwide Conference The 35th anniversary of the ... loads with frequencies symmetrical about the fundament frequency are equally affecting on the beam vibration Chapter VIBRATION OF CRACKED BEAM SUBJECTED TO MOVING FORCE 4.1 Free vibration of...

Ngày tải lên: 28/04/2016, 17:48

... special physical evaluation, research with the team, the test data of the indicators, using SPSS13.0, Microsoft Excel software for data Statistical Analysis The purpose is to build the "Vietnam ... Vietnam excellent volleyball players special physical means Vietnam Elite Volleyball Volleyball athletes bear the load and the ability to adapt to environmental change, the athletes body shape, ... volleyball players 'specialized physical evaluation system diagnosis" and use the evaluation system for volleyball athletes special physical evaluation, identify the strengths and weaknesses of the'...

Ngày tải lên: 13/05/2016, 16:36

... the static and modal characteristics of the proposed spring A model of compact QZS vibration isolator is then constructed as an application of compliant mechanism Figure Diagram of a QZS isolator: ... to fabricate, allowing for a monolithic manufacturing, and a minimal maintenance In contrast, in vibration isolator systems, there has been a little attention to the use of compliant mechanism ... physical model and (b) the deformation of the QZS vibration isolator The high-static-low-dynamic stiffness concept for an anti -vibration isolator is that it can increase its isolating capacity via...

Ngày tải lên: 08/06/2016, 14:07

... separate data area of these database systems means that they not need the segment cleaning mechanisms of the Sprite LFS to reclaim log space The space occupied by the log in a database system can ... simulates the actions of a cleaner until a threshold number of clean segments is available again In each run the simulator was allowed to run until the write cost stabilized and all coldstart variance ... the most up to date ‘‘truth’’ about the state of the data on disk The main difference is that database systems not use the log as the final repository for data: a separate data area is reserved...

Ngày tải lên: 12/09/2012, 15:05

... nature to a data manager which fails to free data, but is easier to detect and prevent • Data manager changes data A malicious data manager may change the value of its data on each cache refresh ... access to cached data than the data manager has permitted (e.g., a write fault on a page made read-only by a pager_data_lock call), the kernel issues a pager_data_unlock call The data manager is ... memory as a cache of secondary storage data pages The effect of this kind of caching on the performance of UNIX and its traditional suite of application programs is dramatic Compilation of a small...

Ngày tải lên: 12/09/2012, 15:05

... – Advantages • Can carry up to three times the amount of data as TDMA • Transmissions are much harder to eavesdrop on • A would-be eavesdropper must also know the exact chip in which the transmission ... the signal • Attenuation – A loss of signal strength • Multipath distortion – As a radio signal is transmitted, the electromagnetic waves spread out 24 Signal Strength (continued) 25 Radio Frequency ... (continued) Antennas • Transmit or receive an RF signal Multiple Access • Only a limited number of frequencies are available for radio transmission – Conserving the use of frequencies is important • Conserving...

Ngày tải lên: 13/09/2012, 10:52

... contained a core of Afro-Mediterranean race and spoke an Afroasiatic language Egyptian civilisation displayed many cultural and political patterns later to appear elsewhere in the continent, although ... rainfall declined thereafter, Nilo-Saharan speakers may have carried this culture and later the exploitation of grain southward towards Lake Victoria, although there is as yet no archaeological ... contrast with the characteristically tall and slender Nilotic peoples whose languages belonged to a third, Nilo-Saharan family, which may have originated in the broad Saharan region at least as early...

Ngày tải lên: 21/09/2012, 10:39

... (not, reversal) ex- (out of, former) pre- (before) re- (again, restore) un- (do the opposite of) ad- (to, toward) com-, con-, co- (with, together) en-, em- (in, into, to cover or contain) in- (into, ... (with, together) en-, em- (in, into, to cover or contain) in- (into, not) pro- (in favor of, before) sub- (under, beneath) ...

Ngày tải lên: 02/10/2012, 12:07

... safety) Materials and methods Stavanger HEMS The Stavanger HEMS is part of the national HEMS system of Norway, and its primary areas of operation are the mixed urban and rural districts of Rogaland ... Norwegian Air Ambulance Foundation Author details Department of Research and Development, Norwegian Air Ambulance Foundation, Drøbak, Norway 2Department of Anaesthesiology and Intensive Care, Stavanger ... Science Data Service approved the collection and recording of the study data Statistics Data were recorded into a database designed with File Maker (FileMaker Inc., Santa Clara, CA, USA) We used Table...

Ngày tải lên: 25/10/2012, 09:56

... of data that could allow for a structured evaluation of the organizational changes It is evident that a well-planned evaluation of changes in the organizations, before they are actually made, ... on performance Acta Anaesthesiol Scand 2010, 54(6):689-695 Handbooks of the Ministry of Social Affairs and Health Ambulance and emergency care services: A handbook for drawing up an alarm procedure ... several databases Approximately 40% of all emergency calls during the period 2002-2005 were available from the municipality-based databases The rest of the data could not be gathered since it was...

Ngày tải lên: 25/10/2012, 10:02

... non-parametric correlations A P value of less than 0.05 was regarded as significant Software package STATA 9.0 (USA) was used for the analysis Materials and Methods Results Hospital setting and antibiotic ... and resistance patterns of leading nosocomial pathogens (gram) and number of boxes were calculated from two databases, 1) Hospital pharmacy computer databases, and 2) International Medication System ... NARP was initiated in Turkey in February 2003 by a central regulation of Ministry of Health and was announced nation-wide via official newspaper of the state [11] This is a quasi-experimental...

Ngày tải lên: 25/10/2012, 11:00