Essential Causal Inference and Econometrics Techniques
Randomized Experiments and Causal Inference
Why are randomized experiments so desirable?
Randomization breaks the link between treatment assignment and confounders, making treated and untreated groups exchangeable. This guarantees unbiased estimates of causal effects (on average) because any differences in outcomes can be attributed to the treatment rather than selection.
Why might we not be able to run a randomized experiment?
They may be unethical (e.g., denying beneficial treatments), infeasible
Construction Project Planning and Financial Management
If you are feeling overwhelmed by this exam, please pause and seek support from a friend, classmate, TA, instructor, or counseling service immediately. The following content is a condensed and in-depth double-sided A4 cheat sheet based on your uploaded materials.
Side A: Scheduling, Cash Flow, and Money Math
1. Project Planning and Schedule Setup
- Planning = Work Breakdown + Work Sequencing
- WBS Definition: A progressive hierarchical breakdown into smaller pieces to the lowest practical level where criteria
Maintenance Strategies for Reliability and Cost Optimization
Corrective Maintenance
Corrective maintenance, the original maintenance technique, remains widely used today. This approach involves repairing equipment after it fails. Corrective maintenance can be categorized into five main types:
- Fail Repair: Restoring a failed component to its operational state.
- Salvage: Disposing of non-repairable material and using salvaged parts from irreparable items in repair, overhaul, or rebuild programs.
- Rebuild: Returning a component to its original specifications by disassembling
Protective Relays and Electrical System Safeguards
Protective Relay Functions in Device Protection
Protective relays are essential devices that detect faults or abnormalities in electrical systems and initiate actions to prevent equipment damage or ensure safe operation. Their primary functions include:
- Fault Detection: Identifying issues like short circuits, overloads, or ground faults.
- Isolation: Triggering circuit breakers to isolate faulty sections.
- Protection: Preventing damage to equipment and ensuring system stability.
Protective relays play a
Read MorePN Junction Diode V-I Characteristics, Resistance & Switching Times
V-I Characteristics of a PN Junction Diode
1. V-I Characteristics of a PN Junction Diode?
The voltage-current (V-I) characteristics of a PN junction diode describe the relationship between the voltage applied across the diode and the resulting current that flows through it. This relationship is highly nonlinear and is typically divided into three regions: forward bias, reverse bias, and breakdown.
Forward Bias Region
Forward Bias Region: In the forward bias region, the positive terminal of the voltage
Read MoreStrategic Marketing Management and Digital Innovation
Fundamentals of Marketing Management
Marketing: The process of creating, offering, and exchanging value to satisfy needs at a profit.
Marketing Management: The managerial process of creating, communicating, and delivering value to a target market in order to achieve profit.
CCDVTP (Kotler): Create, communicate, and deliver value to a target market at a profit.
Holistic Marketing Approach (Kotler): States that marketing must be designed and managed as an integrated system, where all marketing activities
Logistics Operations and Supply Chain Management
Logistics Operators and Service Models (1PL-5PL)
- 1PL (In-House Logistics): Internal management of transport and storage.
- 2PL (Asset-Based Carriers): Providers that own the transport assets.
- 3PL (Logistics Service Providers): Outsourced logistics services.
- 4PL (Lead Logistics Providers & Consultants): Managers of the entire supply chain.
- 5PL (Logistics Network Management Consultancies): Strategic management of logistics networks.
Seaport Infrastructure and Terminal Operations
- Anchorage area: The outermost
Market Research Fundamentals and Methodologies
Core Market Research Definitions
Market Research (MR): Market research is the structured and objective process of collecting, analyzing, and interpreting information about markets, consumers, and competitors in order to reduce uncertainty and support effective business and marketing decisions.
Primary Research: Primary research refers to the collection of original data specifically designed to address a particular research problem, using methods such as surveys, interviews, experiments, or focus groups.
Read MoreEssential Data Science Concepts and Statistical Methods
Data Science Fundamentals
Data Science combines statistics, computer science, and domain knowledge to extract insights from data. The main goal is to uncover hidden patterns, trends, and other valuable information from large datasets to make informed, data-driven decisions. It deals with both structured (e.g., Excel tables) and unstructured (e.g., text, images) data.
The Data Science Lifecycle
- Problem Definition: Understanding the business question.
- Data Collection: Gathering data from various sources.
Java Singly Linked List Implementation
A Singly Linked List is a fundamental data structure consisting of nodes where each node contains data and a reference to the next node.
Defining the Node Class
The Node class is the building block of the list, containing the data and the pointer to the next element.
class Node {
private String data;
private Node next;
public Node(String data) {
this.data = data;
}
public void setData(String data) {
this.data = data;
}
public void setNext(Node node) {