Core–Periphery Model
-Core: Wealthy, developed regions; advanced technology, strong infrastructure, high incomes. Example: New York City
-Semi-Periphery: Moderately developed; growing industry and economy. Examples: Brazil, Mexico
-Periphery: Less developed; limited industry and infrastructure. Examples: Ethiopia, Haiti
-Core dominates economy; semi-periphery develops; periphery depends on others.
Urban Growth Vocabulary
-Exurb: Residential area beyond suburbs; people commute long distances. Example:
Population = entire group being studied
Sample = subset of the population
Example
Population: all university students
Sample: 200 students surveyed
Parameter vs Statistic
Parameter → numerical value describing population
Statistic → numerical value from sample
Examples
p = true population proportion
p̂ (p-hat) = sample proportion
Sample proportion formula
p̂ = x / n
where
x = number of successes
n = sample size
Example
48 support a policy out...
@@@str1 = input("Enter first string: ")
str2 = input("Enter second string: ")
if str2 in str1:
print("Second string is present in first string")
else:
print("Second string is NOT present in first string")
@@@onestring = input("Enter main string: ")
removestring = input("Enter string to remove: ")
if removestring in onestring:
finalstring = onestring.replace(removestring, "")
print("Final string is:", finalstring)
else:
print("String not found")
@@@num = int(input("Enter number
...1.Ruch drgający - ruch ciał, który zachodzi tam i z powrotem po jednym torze, powtarza się w równych odstępach czasu, przy czym jest coraz słabszy, a po pewnym czasie całkowicie ustaje . Przykłady: ruch huśtawki, przepływ prądu przemiennego, drganie strun głosowych, amortyzatory w samochodzie.
Amplituda (A) maksymalne wychylenie z położenia równowagi 1metr
Okres (T) czas jednego pełnego drgania
Częstotliwość (f) liczba drgań w 1 sekundzie. Hz.
T=1/f
2. Wahadło sprężynowe...
22❓ Q1. Explain evolution of the web from Web 1.0 2 Web 4.0.
🔹 Introduction: The World Wide Web hs evolved significantly since its creation. Initially, the web was used only 4 sharing basic information, but over time it hs become a powerful platform 4 communication, business, collaboration, & intelligent services. The development of web technologies is commonly divided into 4 stages: Web 1.0, Web 2.0, Web 3.0, & Web 4.0. Each stage improvements in technology, interactivity, user participation,
Core system problems persist: Variability, congestion, coordination, flow.
Production system layouts: Layouts depend on volume, variety, and material flow. And determine how work flows through the system between work centers.
Product line Layout:(flow lines)FAST, PREDICTABLE, INFLEXIBLE. Resources arranged in processing order, follows single fixed path, designed for mass production. e.g. automotive assembly & consumer electrics. Pros: large outputs, efficiency. CONS: long switchovers/
--------------- LECTURE 4: ------------------ INSPECTION: Experts evaluate interface without involving users. Goal: Identify usability problems early in design. Advantages: Cheap, fast, early design feedback. Disadvantages: Depends on expert judgment, may miss real user issues. ----------- TYPES OF INSPECTION METHODS: 1.) Heuristic Evaluation, 2.) Cognitive Walkthrough, 3.) Pluralistic Walkthrough, 4.) Guidelines Review, 5.) Consistency Inspection. ----------- HEURISTIC EVALUATION: Developed
...f) Define (i) Diffusion current (ii) Drift current & (iii) Barrier potential in a pn junction.
Ans:
1. Diffusion Current: Due to the concentration gradient,
majority carriers move across the junction (holes from p-side to n-side and electrons from n-side to p-side). This motion constitutes the diffusion current.
2. Drift Current: The electric field in the depletion region
causes minority carriers to move across the junction (holes from n-side to p-side and electrons from p-side to n-side). This