Bøger af Paul Tobin

PSpice for Digital Communications Engineering shows how to simulate digital communication systems and modulation methods using the very powerful Cadence Orcad PSpice version 10.5 suite of software programs. Fourier series and Fourier transform are applied to signals to set the ground work for the modulation techniques introduced in later chapters. Various baseband signals, including duo-binary baseband signaling, are generated and the spectra are examined to detail the unsuitability of these signals for accessing the public switched network. Pulse code modulation and time-division multiplexing circuits are examined and simulated where sampling and quantization noise topics are discussed. We construct a single-channel PCM system from transmission to receiver i.e. end-to-end, and import real speech signals to examine the problems associated with aliasing, sample and hold. Companding is addressed here and we look at the A and mu law characteristics for achieving better signal to quantization noise ratios. Several types of delta modulators are examined and also the concept of time divisionmultiplexing is considered. Multi-level signaling techniques such as QPSK andQAMare analyzed and simulated and 'home-made meters', such as scatter and eye meters, are used to assess the performance of these modulation systems in the presence of noise. The raised-cosine family of filters for shaping data before transmission is examined in depth where bandwidth efficiency and channel capacity is discussed. We plot several graphs in Probe to compare the efficiency of these systems. Direct spread spectrum is the last topic to be examined and simulated to show the advantages of spreading the signal over a wide bandwidth and giving good signal security at the same time.

PSpice for Circuit Theory and Electronic Devices is one of a series of five PSpice books and introduces the latest Cadence Orcad PSpice version 10.5 by simulating a range of DC and AC exercises. It is aimed primarily at those wishing to get up to speed with this version but will be of use to high school students, undergraduate students, and of course, lecturers. Circuit theorems are applied to a range of circuits and the calculations by hand after analysis are then compared to the simulated results. The Laplace transform and the s-plane are used to analyze CR and LR circuits where transient signals are involved. Here, the Probe output graphs demonstrate what a great learning tool PSpice is by providing the reader with a visual verification of any theoretical calculations. Series and parallel-tuned resonant circuits are investigated where the difficult concepts of dynamic impedance and selectivity are best understood by sweeping different circuit parameters through a range of values. Obtaining semiconductor device characteristics as a laboratory exercise has fallen out of favour of late, but nevertheless, is still a useful exercise for understanding or modelling semiconductor devices. Inverting and non-inverting operational amplifiers characteristics such as gain-bandwidth are investigated and we will see the dependency of bandwidth on the gain using the performance analysis facility. Power amplifiers are examined where PSpice/Probe demonstrates very nicely the problems of cross-over distortion and other problems associated with power transistors. We examine power supplies and the problems of regulation, ground bounce, and power factor correction. Lastly, we look at MOSFET device characteristics and show how these devices are used to form basic CMOS logic gates such as NAND and NOR gates.

"Dr. Zomboss's latest scheme has him reading bedtime stories to lull the citizens of Neighborville to sleep, so his zombie army can feast on their brains!"--

"Originally issued as Plants vs. Zombies # 12: Boom boom mushroom Part 3 by Dark Horse Comics in 2016"--Title page verso.

With Crazy Dave and his powerful plant posse always one step ahead, Zomboss realizes the only way to achieve victory is by being even one more step ahead than that! So he builds his latest invention: four brain bots called The Unpredictables! With the bots' ability to predict their enemies' every move, Patrice, Nate, and Crazy Dave will have to pull out all the stops to protect Neighborville!

Based on the video game Plants vs. Zombies.

Based on the video game Plants vs. Zombies.

Based on the video game Plants vs. Zombies.

Place of publication from publisher's website.

Seven years ago, an attempt to weaponize dreams resulted in holes being punched through the world we know and into the world of dreams. Nightmarish creatures now stalk the land, sprouting from (and killing) anyone unlucky enough to dream. The only way to save the world is for certain people to have their dreams come true. Which is how Risa Harumi finds herself not only fighting monsters, but forced into finding true love. Monsters and modern dating? It feels like a nightmare either way, and the only help Risa has is a friendly-ish troll named Croak and her pre-teen daughter, Machi.

Disturbed by his own nightmares, Dr. Zomboss invents a machine that allows him to enter the dreams of Neighborville's citizens.Zomboss hopes to hypnotize humans, using their dreams, into liking and approaching zombies instead of fearing them and running away. Brainwashed and dream-influenced citizens galore need Crazy Dave, his army of powerful plants, his genius niece Patrice, and neighborhood friend Nate to steer them in the correct direction--away from zombies! Eisner Award-winning writer Paul Tobin (Bandette, Genius Factor) collaborates with artist Christianne Gillenardo-Goudreau (Plants vs. Zombies: Better Homes and Guardens, Plants vs. Zombies: Multi-ball-istic) for a brand-new Plants vs. Zombies original graphic novel!

The most unlikely of patrons hires Bandette, the greatest thief in the world, to pilfer a painting whose brushstrokes hold centuries of hidden messages!Unfortunately, a series of felonious rivals contrive to snatch the art for themselves! Bandette and her adversaries utilize skill, romance, and murderous intent, as the canvas passes from larcenous hand to hand as they each struggle to possess...THE SIX FINGER SECRET!

The world''s greatest thief is a costumed teen burglar by the nome d''arte of Bandette, and she''s been challenged for the title!The Great Thieving Race is on, as Bandette and rival Monsieur compete to steal priceless artifacts from a criminal organization and its evil leader, but their response could make this Bandette''s final crime spree!

A new original graphic novel from the team behind the New York Times bestselling Plants vs. Zombies comics, Paul Tobin and Ron Chan!Benson, young teen boy with dreams of venturing into space and becoming a Galactic Ranger, is given the chance to make his hopes a reality when he''s selected to join an elite academy full of strange characters and unusual alien classmates.But when a combination of culture shock, bullying, and administrative secrets shake his confidence, Benson must dig deep and fight to prove he belongs.

The world''s greatest thief is a costumed teen burglar by the nome d''arte of Bandette!Gleefully plying her skills on either side of the law alongside her network of street urchins, Bandette is a thorn in the side of both Police Inspector Belgique and the criminal underworld. But it''s not all breaking hearts and purloining masterpieces when a rival thief makes a startling discovery. Can even Bandette laugh off a plot against her life?

Feisty fun for the whole family with two of Marvel''s most popular superstars! Everybody loves Deadpool, right? Somebody ought to tell the Avengers! Can the Merc with a Mouth fast-talk his way out of a confrontation with Earth''s Mightiest Heroes? At least Spider-Man can see Wade Wilson''s appeal until a day in the life of Deadpool shows him a little something about power and irresponsibility. Wolverine''s keen to teach Spidey a lesson too, when he fi nds out the webhead is following him - and he is one tutor who makes sure you get the point! And what was Wolvie up to just before he first tangled with the Hulk? Collecting: Marvel Adventures Super Heroes 4, Marvel Universe Ultimate Spider-Man: Web Warriors 8, Free Comic Book Day 2009 (Wolverine: Origin Of An X-Man), Marvel Adventures Spider-Man 3