METROLOGY & MEASUREMENT Unit 1 notes (5 files merged)MechRtc
Metrology is the science of measurement. It is concerned with establishing standards of measurement, measuring errors and uncertainties, and ensuring uniformity of measurements. Metrology has applications in industry, commerce, and public health/safety. It functions to maintain standards, train professionals, regulate manufacturers, and conduct research to improve measurement methods and accuracy. Proper measurement requires standards, instruments, trained personnel, and control of environmental factors that could influence results. Sources of error include the measuring system and process itself as well as environmental and loading factors. Accuracy depends on the operator, temperature, measurement method, and instrument deformation.
This document provides specifications for steel hex cap screws, bolts, and studs with minimum tensile strengths of 120 ksi, 105 ksi, and 90 ksi. It specifies requirements for materials, manufacture, dimensions, mechanical properties, ordering information, and protective coatings. Key requirements include heat treatment involving quenching and tempering, chemical composition limits, hardness testing between Rockwell C 56-63, and tensile testing to specified proof loads. The standard covers hex cap screws, bolts, and studs in diameters from 1/4 to 3 inches for general engineering applications.
The document provides instructions for how to read and use a 0-25mm micrometer. It explains that a micrometer is a precision measuring instrument widely used in engineering. It identifies the components of a micrometer and how they are used to measure within 0.01mm. The document demonstrates how to read micrometer measurements, provides practice examples, and describes completing an inspection sheet to test comprehension.
METROLOGY & MEASUREMENT Unit 1 notes (5 files merged)MechRtc
Metrology is the science of measurement. It is concerned with establishing standards of measurement, measuring errors and uncertainties, and ensuring uniformity of measurements. Metrology has applications in industry, commerce, and public health/safety. It functions to maintain standards, train professionals, regulate manufacturers, and conduct research to improve measurement methods and accuracy. Proper measurement requires standards, instruments, trained personnel, and control of environmental factors that could influence results. Sources of error include the measuring system and process itself as well as environmental and loading factors. Accuracy depends on the operator, temperature, measurement method, and instrument deformation.
This document provides specifications for steel hex cap screws, bolts, and studs with minimum tensile strengths of 120 ksi, 105 ksi, and 90 ksi. It specifies requirements for materials, manufacture, dimensions, mechanical properties, ordering information, and protective coatings. Key requirements include heat treatment involving quenching and tempering, chemical composition limits, hardness testing between Rockwell C 56-63, and tensile testing to specified proof loads. The standard covers hex cap screws, bolts, and studs in diameters from 1/4 to 3 inches for general engineering applications.
The document provides instructions for how to read and use a 0-25mm micrometer. It explains that a micrometer is a precision measuring instrument widely used in engineering. It identifies the components of a micrometer and how they are used to measure within 0.01mm. The document demonstrates how to read micrometer measurements, provides practice examples, and describes completing an inspection sheet to test comprehension.
This document discusses teamwork in programming contests. It describes a team that achieved success in several competitions from 2016-2017 by working together effectively. The key aspects of teamwork discussed are balancing individual strengths, collaborating during practice, and coordinating strategies during contests. Working as a cohesive unit helped the team perform better than any member could alone.
The document discusses various data structures including stacks, queues, binary heaps, and binary indexed trees. It provides descriptions of each data structure, their common operations like push(), pop(), and top(), as well as discussing their time complexities and providing C++ code examples for implementation. It also gives examples of applications for each data structure.
This document discusses teamwork in programming contests. It describes a team that achieved success in several competitions from 2016-2017 by working together effectively. The key aspects of teamwork discussed are balancing individual strengths, collaborating during practice, and coordinating strategies during contests. Working as a cohesive unit helped the team perform better than any member could alone.
The document discusses various data structures including stacks, queues, binary heaps, and binary indexed trees. It provides descriptions of each data structure, their common operations like push(), pop(), and top(), as well as discussing their time complexities and providing C++ code examples for implementation. It also gives examples of applications for each data structure.
11. E. BOND
• 그런데 방금처럼 짜면 메모리 초과가 납니다.
• 잘 관찰해보면 i번째 사람에 대한 DP 테이블을 채울 때, i-1번째 사람까지 다 계산되어있
는 D[i-1][~]만 참조합니다.
• 그래서 i를 0, 1, 2, … , N-1까지 채워나가는데
i가 0, 2, 4, 6, … 일 때에는 D[0][~]에 값을 넣고
I가 1, 3, 5, 7, … 일 때에는 D[1][~]에 값을 넣으면 D[2][2^N]개의 배열만 가지고 답을 구할
수 있습니다. 그런데 처음에 D[0]을 채우고, D[1]을 계산한 다음, D[0]을 다시 초기화해주고
D[1]을 가지고 D[0]을 계산해야하겠습니다.
13. F. DEBUG
• 문제에서 요구하는 것이 가장 큰 정사각형 킬러.
• 큰 정사각형부터 크기를 줄어나가면서 킬러가 존재하는지 판별해보자.
• 정사각형의 크기를 결정했다면 푸른색에 대응되는 주황색 칸이 일치하는지 판별.
• 크기가 1보다 큰 정사각형을 찾는 것에 주의