Academicmaterials

serial position effect - tendency to recall first and last things better in a list primary effect - tendency to recall items better when they are learned first recency effect - tendency to recall items better when they are learned last phoneme - smallest units of speech sounds, no meaning chunking - putting elements in associated groups to remember better working memory - (ex) remembering something just for a limited amount of time semantic networks - memory organized based on meaning (not...

DNA sequences in many human genes are very similar to the sequences of corresponding genes in chimpanzees. The most likely explanation for this result is that - humans and chimpanzees share a relatively recent common ancestor If the half-life of carbon-14 is about 5730 years, then a fossil that has one-quarter the normal proportion of carbon-14 to carbon-12 should be about how many years old? - 11,460 The giraffe stretched its neck while reaching for higher leaves; its offspring inherited l...

A population was observed to increase from 5000 to 6000 individuals in one year, What is the rate of increase? - Rate of increase = 6000/5000 Advantages of reproducing later in life? - More resources available for Individuals An allele that is advantageous early in life but will be deleterious later in life will be SELECTED because of greater contribution of the early classes. TRUE OR FALSE? - TRUE Another Simple Case assumption? - The rate at which a population increases is a simple multip...

COMD 5070 Bundled Exams Updated 2024/2025 with complete solutions

How does sampling rate relate to playback quality, file size, frequencies saved in recording? - The higher the sampling rate, the bigger file size is needed and the higher quality you will have How does a complex periodic sound change when the fundamental is removed or muted? - when removed, the timbre (quality) differs, but the pitch is perceived as the same What does empirical mean? - based on data What does deterministic mean? - obey physical laws What does predictive mean? - show what ...

vocal modulation - rhythmic changes that are predictable in fundamental frequency and in amplitude in the voice; gradual increases and decreases that occur over the course of many glottal cycles Sampling rate - the frequency with which numbers are stored or written down to represent the analog signal that you're sampling. perceptual normalization - When a listener simplifies the processing of the speech signal to smooth out superfluous variability, it is called categorical perception - On...

If you were to produce a stop consonant, like a /t/ or a /d/, pressure would be higher or lower than a fricative? - higher than a fricative What will the oral air pressure be like when producing a vowel? - the same as atmospheric pressure around person's head. How do you calculate the average air flow (volume velocity) - volume/time What is a u-tube manometer - A tube in the shape of a 'U' that is used to measure pressure and can be used to calibrate electronic equipment to measure pres...

harmonic spectral slope [how do steep or shallow slopes relate to voice quality?] - fundamental frequency harmonics are integer multiples result: a whole spectrum of sound F0 goes up, harmonics spread higher harmonics progressively weaker vital capacity - *the maximum amount of air that a person can exhale after they have done a maximum inhalation *maximum amount of available air for speech u-tube manometer: how does it work? - Measures static pressure Tube in the shape of a u water i...

a typical range of variation for fundamental frequency (F0) during reading passages would be about - 3 semitones the inverse square law means that - intensity decreases by a factor equal to the square of the change in distance Multiple vertical lines is a - harmonic series A single vertical line on a line spectrum would represent - a sine wave a low pass filter - blocks high frequencies low frequencies are pass through what type of filter? - low pass filter we say that science is parsimo...

What does FFT stand for? - fast Fourier transform What does a FFT spectrum show us? - shows us the range of harmonics that are present in sound, each peak shows a harmonic What will FFT not show us very well? - formants Is the FFT display useful for displaying features of the sound source or the vocal tract filter? - the sound source What does the LPC show us? - spectral envelope What are the two spectrum discussed in this class? - FFT and LPC What are formants? - resonant energy peaks i...

Which speech perception theory has been criticized as being so vague that it is more of a philosophy than a theory or model? - motor theory When a listener simplifies the processing of the speech signal to smooth out superfluous variability, it is called - perceptual normalization The speech signal is - neither invariant nor linear One type of quantal perception that occurs as we listen to speech is called - categorical perception In duplex perception - syllable components are presented se...

Which of the following things are important to think about when using Doppler? - Doppler is an angle-dependent and it is therefore important that the cursor is parallel to the blood flow. Of all the projections we have seen so far, which one does not allow you to visualize the aorta? - Parasternal short axis view in the papillary plane Which of the following statements about Doppler is true? - Post Doppler is used to measure blood flow in a certain area of interest Which of the following m...

when we need to pinpoint exact speed & direction of a flow a particular spot - When would you use the spectral doppler echocardiography over the color flow doppler? low in cost, time saving, serially repeatable, comfortable - What are the advantages of echocardiograms? chest pain, palpitations, dizziness, exercise intolerance, CAD, SOB, murmurs, syncope, abnormal ECG, MI, LV function, cardiac tumors/masses/clots, valve disease, prosthetic cardiac valves, cardiomyopathies, stroke, cardiac t...

direction of blood flow,velocity of blood flow - Color flow converts flow frequencies into different colors; allowing us to examine the __ _ When obtaining the apical views, the patient shoulld be in the _________ decubitus position - left lateral the LA can be measured in 2D during end ventricular diastole - false when measuring the LV from the PSLAX view, end diastole is measured immediately after the - MV closure when measuring the LV from the PSLAX view, end systole is measured immedi...

gadolinium enhancement agents will readily pass through the normal blood brain barrier true or false - false tissues that are less efficient at spin-spin interactions because they contain more free water, such as CSF, should have A) High T2 values and produce hypointense signals B) HIgh T2 values and produce hyperintense signals C) low T2 values and produce hypointnese signals D) low T2 values and produce hyperintense signal - High T2 values and produce hyperintense signals in a large m...

In MRI, substances respond to a specific radio frequency which is known as: - Resonance frequency The effects of main magnetic field inhomogeneities on the FID signal are corrected for in a Spin-echo sequence by applying a second radio-frequency pulse. The flip angle of this radio-frequency pulse is: - 180 degrees The components of the Gyro-magnetic ratio are: - Magnetic moment to angular momentum Which type of electromagnetic coils produce smaller magnetic field which allow spatial locali...

RADIOFREQUENCY (RF) - ELECTROMAGNETIC RADIATION LOWER IN ENERGY THAN INFRARED. THE RF USED IN MRI IS IN THE FORM OF A BURST OF RF ENERGY (PULSE) I THE 10 MHZ TO 100MHZ RANGE RF PULS, DELIVERED TO THE PATIENT BY RF TRANSMITTER. THE RF FREQUENCY, AT THE LARMOR FREQUENCY, RESULTS IN ROTATION OF THE NET MAGNETIZATION VECTRO AND PHASE COHERENCE OF THE NUCLEAR SPINS. AN RF COIL IS USED FOR TRANSMITTING AND RECEIVING MRI SIGNALS (RF). FRINGE FIELDS - WEAKER MAGNETIC FIELDS THAT ARE AWAY FROM THE I...

When does the patient screening begin? - When the MRI tech meets the patient prior to the exam room Which of the following factors is not a part of the formula for calculating the estimated glomerular filtration (eGFR)? - BUN: Blood urea nitrogen Which of the following protocols would be included in an emergency plan for an outpatient MRI facility? - Quench, lock doors, wait for 911 Which of the following contrast agents is most commonly used in MRI? - Blood pool agents IV contrast agents...

T2 is the measurement of time from the transverse component of the NMV to decrease what percentage of its max value after the application of a 90 degree RF pulse - 37% combining a metal ion with a ligand reduces their tendency to bind proteins, enzymes, or membranes, the degree to which they disassociate is a measure of: - toxicity in a large main magnetic field such as those employed in MRI, the motion of a hydrogen proton has been described as wobbling like a spinning top, this motion is ...

Which mandatory OPTASK LINK general information, non-link specific set identifies special points of contact information of the OPTASK LINK? - POCLINK As per the JMTOP and MIL-STD-6040, the ________________ is responsible for promulgating the OPTASK LINK message. - Area Air Defense Commander (AADC) Match each term to each definition a) A graphical representation of battles, engagements, and activities to achieve military objectives and managed at the functional component level b) A distrib...