An Experimental Investigation of Fatigue Performance for A Flexure Spring

In order to prevent a free-piston Stirling cryocooler failure during mission life, the flexure spring's fatigue life is most critical and important. In the current research, an effort is made to examine fatigue life. The fatigue life testing of cryocooler flexures is frequently discussed in the literature. However, more information is needed about the economic approach and hardware needed for the testing. This research paper adopts the FEA approach of flexure spring and outlines the criteria for flexure fatigue testing. A moving coil linear motor was also designed and selected for the oscillating shaft and bending special-purpose flexure spring stack to validate stiffness criteria. The 108 no. of cycles required to validate the fatigue limit were also attained using the approach in a few days when testing at a relatively high frequency

An Experimental Investigation of Fatigue Performance for A Flexure Spring

In order to prevent a free-piston Stirling cryocooler failure during mission life, the flexure spring's fatigue life is most critical and important. In the current research, an effort is made to examine fatigue life. The fatigue life testing of cryocooler flexures is frequently discussed in the literature. However, more information is needed about the economic approach and hardware needed for the testing. This research paper adopts the FEA approach of flexure spring and outlines the criteria for flexure fatigue testing. A moving coil linear motor was also designed and selected for the oscillating shaft and bending special-purpose flexure spring stack to validate stiffness criteria. The 108 no. of cycles required to validate the fatigue limit were also attained using the approach in a few days when testing at a relatively high frequency

FPGA Implementation of Neural Nets

The field programmable gate array (FPGA) is used to build an artificial neural network in hardware. Architecture for a digital system is devised to execute a feed-forward multilayer neural network. ANN and CNN are very commonly used architectures. Verilog is utilized to describe the designed architecture. For the computation of certain tasks, a neural network's distributed architecture structure makes it potentially efficient. The same features make neural nets suitable for application in VLSI technology. For the hardware of a neural network, a single neuron must be effectively implemented (NN). Reprogrammable computer systems based on FPGAs are useful for hardware implementations of neural networks

Classical and Quantum Fisher Information in the Geometrical Formulation of Quantum Mechanics

The tomographic picture of quantum mechanics has brought the description of quantum states closer to that of classical probability and statistics. On the other hand, the geometrical formulation of quantum mechanics introduces a metric tensor and a symplectic tensor (Hermitian tensor) on the space of pure states. By putting these two aspects together, we show that the Fisher information metric, both classical and quantum, can be described by means of the Hermitian tensor on the manifold of pure states.Comment: 8 page

LEARN: A multi-centre, cross-sectional evaluation of Urology teaching in UK medical schools

OBJECTIVE: To evaluate the status of UK undergraduate urology teaching against the British Association of Urological Surgeons (BAUS) Undergraduate Syllabus for Urology. Secondary objectives included evaluating the type and quantity of teaching provided, the reported performance rate of General Medical Council (GMC)-mandated urological procedures, and the proportion of undergraduates considering urology as a career. MATERIALS AND METHODS: LEARN was a national multicentre cross-sectional study. Year 2 to Year 5 medical students and FY1 doctors were invited to complete a survey between 3rd October and 20th December 2020, retrospectively assessing the urology teaching received to date. Results are reported according to the Checklist for Reporting Results of Internet E-Surveys (CHERRIES). RESULTS: 7,063/8,346 (84.6%) responses from all 39 UK medical schools were included; 1,127/7,063 (16.0%) were from Foundation Year (FY) 1 doctors, who reported that the most frequently taught topics in undergraduate training were on urinary tract infection (96.5%), acute kidney injury (95.9%) and haematuria (94.4%). The most infrequently taught topics were male urinary incontinence (59.4%), male infertility (52.4%) and erectile dysfunction (43.8%). Male and female catheterisation on patients as undergraduates was performed by 92.1% and 73.0% of FY1 doctors respectively, and 16.9% had considered a career in urology. Theory based teaching was mainly prevalent in the early years of medical school, with clinical skills teaching, and clinical placements in the later years of medical school. 20.1% of FY1 doctors reported no undergraduate clinical attachment in urology. CONCLUSION: LEARN is the largest ever evaluation of undergraduate urology teaching. In the UK, teaching seemed satisfactory as evaluated by the BAUS undergraduate syllabus. However, many students report having no clinical attachments in Urology and some newly qualified doctors report never having inserted a catheter, which is a GMC mandated requirement. We recommend a greater emphasis on undergraduate clinical exposure to urology and stricter adherence to GMC mandated procedures

REMOVAL OF TURBIDITY FROMWASTE WATER BYUSING LOW COST ADSORBENTSA REVIEW

Wateris a very important natural resource which is very important for our day to day life. The water reserves which are there are also getting polluted due various wastes. Turbidity is measure by intensity of light scattered by the water sample. Higher the intensity produce higher turbidity. Turbidity generally refers to the cloudiness of solution it shows the presence of total suspended solids like clay, silt, organic matter which are very harmful for mankind, biologically as well as chemically. They give an undesirable taste and odour. Due to adsorptive characteristics of colloidal, disinfection of turbid water is not always solutions possible. Use of natural products to reduce turbidity in water sample is a technique that has been repeated from many years and the material used are safe and effective, like Rice Husk, Ground-Nut S hell and very fine S and (300 Micron)

ANALYSIS AND DESIGN OF FLOATING COLUMNS: A REVIEW

Framed structures are very popular in India and column plays an important role in structural engineering. A column is a vertical member which starts from foundation and transfers the structural load to the ground through foundation. The term floating column is also a vertical member at its lower level rests on a beam which is a horizontal member. The beams in turn transfer the load toother columns below it. This paper studies the comparison of a multistorey building with and without floating column using Extended Three Dimensional Analysis of Building Systems (ETABS) software.The values of shear force and bending moment for normal and floating columns are extracted and compared using ETABS

Removal of Turbidity Fromwaste Water Byusing Low Cost Adsorbentsa Review

Wateris a very important natural resource which is very important for our day to day life. The water reserves which are there are also getting polluted due various wastes. Turbidity is measure by intensity of light scattered by the water sample. Higher the intensity produce higher turbidity. Turbidity generally refers to the cloudiness of solution it shows the presence of total suspended solids like clay, silt, organic matter which are very harmful for mankind, biologically as well as chemically. They give an undesirable taste and odour. Due to adsorptive characteristics of colloidal, disinfection of turbid water is not always solutions possible. Use of natural products to reduce turbidity in water sample is a technique that has been repeated from many years and the material used are safe and effective, like Rice Husk, Ground-Nut S hell and very fine S and (300 Micron)