Name of student: Bui Huy Hoang Student’s number: Class: Lecture: DBS bank is a leading financial services group in Asia, with over 200 branches across 15 markets. DBS was established in 1968 as the development bank of Singapore. It was the catalyst to Singapore’s economic development during the nation’s early years of independence. Since then, DBS has transformed into a successful financial services institution, offering a comprehensive range of innovative products and solutions to meet
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Homework 1_1 ECET310 1. Add: (a) 60 dB + 25 dB = 85 dB (b) 20 dBW + 5 dBW = 25 dBW (c) 22 dB - 4 dB = 18dB 2. Convert: (d) 65 W into dB P(dB) = 10 log(65W/1W) = 18.1 dB (e) 10 dB into watts P(watt) = log^-1(P(10)/10) = 10 W (f) – 5 dB into watts P(watt) = log^-1(P(-5)/10) = 316.228 mW (g) –30 dBm into dBrn dBrn = dBm + 90 = -30dBm+90 = 60 dBrn (h) 15 dBrn into
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Lab B- Noise Nuisance Investigation 1.0 Introduction 2.1 Background Environmental Protection UK states that “sound is essential to our daily lives, but noise is not – noise can be defined as unwanted sound. It is a source of irritation and stress for many people and can even damage our hearing if it is loud enough. Many of us are exposed to stressful levels of noise at home and at work.” (http://www.environmental-protection.org.uk/noise/environmental-noise/noise-pollution/) Part III
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of noise effects on system performance One of the main impact on system cost Incompetent noise specifications can irritate customers Relationship of Noise and Decibels What is decibels and noise? Decibel (dB) Uses ratios and logarithms Compress wide span of magnitude into smaller and easier-tomanipulate range of numbers Uses to measure one signal against another signal of defined value Simplifies the measurement of relative signal gain and loss
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Doing Business is series of annual reports with their benchmark regulations affect small and medium size enterprises. The 2014 year report presents quantitative indicators on 11 areas of business regulations for 189 economies. It is a tool that allows economies to track progress over the time by comparing each other in respect of building blocks for business. The report further helps policy makers to reduce cost and complexity of government procedures. The report tracks and changes for regulations
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Homework 1: Logarithm Practice IFT 394 1. Calculate: Show the answer in dB and decimal (a) (b) 20 dBW + 5 dB = 25dBW; 316W (c) 22 dB - 4 dB = 18dB; 63.1 mW (d) 2. 60 dB + 25 dB = 85dB 13 dBW - 7 dBm (Be careful) Convert: (a) 65 W into dBW 10log(65) = 18 dB (b) 10 dBW into watts = 10W (c) – 5 dBW into watts = 0.0316 (d) -15 dBm into watts = 0.000032W (e) -40 dBm into dBW = -70dBW !1 (f) -80 dBW into dBm = -50dBm (g) log2
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demonstrates the wide variation in Intensity for typical sounds in air. We will start by defining a new quantity, L, the intensity level, which has units of dB. I L ≡ 10 log I0 where: is the time average intensity of the sound wave. I0 is the reference level used for comparison purposes. 3-1 Source Intensity (W/m2) Intensity Level (dB) Jet Plane 100 140 Pain Threshold 1 120 Siren 1x10-2 100 Busy Traffic 1x10-5 70 Conversation 3x10-6 65 Whisper
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Deep brain stimulation (DBS) is a neurosurgical procedure used as treatment for obsessive compulsive disorder (OCD) and other illnesses. During this procedure, the brain is stimulated in specific areas using electrodes. DBS started being used in the 80s as treatment severe tremors and Parkinson's disease. It was not until recently that this treatment began being used for OCD patients. Deep brain stimulation should not be used as treatment for OCD, because it is a highly experimental procedure and
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