Data Collection. Existing Data. Lilac Mark Schwartz Grasshopper data Stephen Johnson European Corn Bore Flights Web site Dept of Ag statistics proportion of wheat headed, jointed, turned, harvested Corn Soybean Sorghum Potato Alex Pavlista Grape data. Ancillary Data. PrecisionBy olesia
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Signals. COS 217. Goals of Today’s Lecture. Overview of signals Notifications sent to a process UNIX signal names and numbers Ways to generate signals Signal handling Installing signal handlers Ignoring vs. blocking signals Avoiding race conditions Keeping track of the passage of time
Signals. Signals can be analog or digital. Analog signals can have an infinite number of values in a range; digital signals can have only a limited number of values . In data communication, we commonly use periodic analog signals and aperiodic digital signals.
Signals. Problems. There is a very complicated computation that takes a very very long time, in order to let the user know the program is working hard on the computation instead of hanging, we want to print a “ . ” on the screen every second while doing the computation. Problems (cont.).
Signals. Signal a transmitted effect conveying a message. A essential characteristic of a signal is that of change, since it must be capable of carrying information. The change must be partly unpredictable.
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signals. xsec. 1y HL. NH / MH500. qq -> qqqq mn. 158 / 184 fb. 10^4 events. qq -> qqqq mm. 3.2 / 9.8 fb. 5*10^2 events. qq -> qq mmmn. 0.127 / 0.131 fb. 10 events. Remark:. we can take as reference 1y at High Lumi = 100 fb -1. total xsec. s * BR(W-> mn ).
Signals. Z 0 = 50 Ω microstrip. Z 0 = 113 Ω twisted pair. 50 Ω. Length 5.1 – 6.1 m. 50 Ω. Existing scheme (above) – NOTE ground at both ends of cable. Voltage/noise externally imposed between these grounds will simply add to signal+threshold input to comparator. Not great.
Signals. Signals are electric or electromagnetic encoding of data. Information, Data and Signals. Data - A representation of facts, concepts, or instructions in a formalized manner suitable for communication, interpretation, or processing by human beings or by automatic means
Signals. Analog and digital Aperiodic and periodic signals Analog signals. The McGraw-Hill Companies, Inc., 1998. WCB/McGraw-Hill. Figure 4-1. Transformation of Information to Signals. The McGraw-Hill Companies, Inc., 1998. WCB/McGraw-Hill. Figure 4-2. Analog and Digital Clocks.
HEAT HEAT HEAT. True or False. Definitions. Conduction. Convection. Scales in Measurement. Radiation. Directions. Directions. Choose a subject – True/False, Conduction, Insulator, Definitions, Convection, Radiation Click on each question, and then carefully answer each.