Why was the Philly311 project so successful? What management, organization, and technology factors contributed to its success?

Write a Java program that reading two text files using multithreading (command line output is accepted).

(Huge Integer Class) Create a class HugeInteger which uses a 40-element array of digits to store integers as large as 40 digits each. Provide methods input, output, add and subtract. For comparing HugeInteger objects, provide the following methods: isEqualTo, isNotEqualTo, isGreater- Than, isLessThan, isGreaterThanOrEqualTo and isLessThanOrEqualTo. Each of these is a predicate method that returns true if the relationship holds between the two HugeInteger objects and returns false if the relationship does not hold. Provide a predicate method isZero. If you feel ambitious, also provide methods multiply, divide and remainder. [Note: Primitive boolean values can be output as the word]

Suppose you work in a police department. You want to maintain a database of up to 1700 license-plate numbers of people who receive frequent tickets so that it can be determined very quickly whether or not a given license plate is in the database. The speed of response is very important; efficient use of memory is also important, but not as important as the speed of response. Now write a c++ program using any data structure(s) you want. You must be able to create, update, read, retrieve, and delete any record.

Transcript: shows a schematic of a combined cycle power plant in which a simple closed loop cycle using helium is added to a vapour power cycle using water. The energy source for heating the helium is a nuclear reactor. The two cycles are connected via an insulated heat exchanger. The steady-state operating conditions are shown in the figure. The water leaves the heat exchanger as saturated vapour at 10 MPa]. The water is passed through a superheater so that it is at 550 [°C] and 10 MPa before entering the steam turbine. The turbine exhaust has a quality of 90% at 10 kPa). Saturated liquid leaves the insulated condenser and enters the pump, where it exits at 47.5 °C and 10 MPa). In the condenser, the energy from the water in the power loop is transferred to cooling water drawn from a lake. The temperature of the cooling water rises from 15 °C] to 35 °C) as it passes through the condenser and its mass flow rate is 1750 kg/s] The helium exits the heat exchanger at 1.38 MPa) and 80 [°C] After passing through the compressor, the helium is at 5.50 (MPaand 407 °C). The helium passes through the reactor and is heated to 760 [°C] with negligible pressure change. After expanding through the gas turbine, the helium is at 1.38 (MPa) and 395 [°C]. The gas turbine shaft work output is used to drive the compressor and to produce a net power output. The compressor, turbines, and pump are also insulated i.e., adiabatic). Neglect changes in potential and kinetic energies. (a) Determine the mass flow rate in the steam power cycle, m'w.in/kg/s). (b) Determine the power output of the steam turbine, Wri, in kW). (c) Determine the net power output of the gas turbine, Wr2t, in [kW]. (d) Determine the thermal efficiency of the combined cycle. (e) On two separate T-u (temperature-specific volume) diagrams, draw process representa- tions for the steam cycle and the helium cycle. On the diagrams, clearly indicate the labelled state points, the process paths (use a dashed line if the path is unknown), and the constant pressure lines that pass through the state points. Indicate state temperature values and saturation temperature values for reference as appropriate. Do any additional work necessary to label the diagram. Labelling v values is optional Po = 5.50 MPa] Tii = 760 [°C] reactor 2 Tio = 407 °C N o | (heater) P1 = PO helium 7 cycle compressor gas WT2,043 Cheat exchanger T = 395 °C turbine heat exchanger P = P Tg = 80°C 8+ P = P. superheater Fun steam 6 saturated og 707T= 550 [°C] W cycle Pape 10 (MPa) steam turbine P = 1.38 (MPa) 5 + P = P. T5 = 47.5°C) Ts = 47.5 [°C] pump saturated liquid P = P3 Ti = 15 [°C] Pi = 100 [kPa] mcw = 1750 [kg/s) condenser Tilaw 3 P = 10 [kPa] 13 = 0.90 T, = 35 [°C P = P lake water

Transcript: As shown in figure, two infinitively long parallel conducting wires are separated by 4 m. Wire 1 carries a current of 8 A out of the page and Wire 2 carries a current of 12 A into the page. 4 m L. a) In unit-vector notation, what is the magnitude of the resulting magnetic field at point p (16=41x10'T.m/A). 2 b) A third wire carrying a current of 6 A into the page is placed at point P. Calculate the magnetic force acting on the 3 cm length of this wire.

Transcript: In the circuit shown in Figure, a. The switch S has been closed for a sufficiently long time (so that the capacitor is fully charged), find the currents on each resistance and the maximum charge on the capacitor. с E-16V Ho R-2 S2 W d b. If the switch S is opened, find the time constant of the discharging circuit and write the current on the resistance Rı as a function of time.

A proton with 0.5 GeV energy moves along the x-direction and enters a region in which there is a magnetic field. The proton experiences an acceleration of 1.5 x 10¹⁰ m/s² in the y-direction. Determine the magnetic field in vector form (m_ρ = 1.6x10^-27 kg).

A biologist wants to test if there is any linear relationship between the amount of fertilizer supplied to aubergine plants and the subsequent yield of aubergines. She selected 2 aubergine plants of the same variety and treated them weekly with a solution in which x grams of fertilizer were dissolved in a fixed quantity of water. The yield, y kilograms of aubergines were recorded. 

1. Form an estimated regression model.
2. Find the estimates using OLS.

1. Are rules in poetry important? How do they matter to the poet and the reader? Discuss it in terms of following this text likes: “Daddy, Sylvia Plath”, “In A Station of the Metro, Ezra Pound” and “Birds With Two Right Wings, Lawrence Ferlinghetti”.
2. How has the representation of women in literature change over the course of history? Or have they not changed at all? Discuss in terms of “Hill Like White Elephant, Ernest Hemingway”, “Daddy, Sylvia Path” and “ In A Station of the Metro, Ezra Pound”.