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Program Evaluation And Review Technique
The program evaluation and review technique (PERT) is a statistical tool used in project management, which was designed to analyze and represent the task (project management), tasks involved in completing a given project. PERT was originally developed by Charles E. Clark for the United States Navy in 1958; it is commonly used in conjunction with the Critical Path Method (CPM), which was also introduced in 1958. Overview PERT is a method of analyzing the tasks involved in completing a project, especially the time needed to complete each task, and to identify the minimum time needed to complete the total project. It incorporates uncertainty by making it possible to schedule a project while not knowing precisely the details and durations of all the activities. It is more event-oriented than start- and completion-oriented, and is used more for projects where time is the major constraint rather than cost. It is applied to very large-scale, one-time, complex, non-routine infrastru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pert Chart Colored
Pert or PERT may refer to: Ships * - see List of United States Navy ships: P * , a World War II corvette, originally HMS ''Nepeta'' * Pert (sidewheeler), ''Pert'' (sidewheeler), a 19th-century steamboat that operated in British Columbia, Canada Statistics * PERT distribution People * Pert (surname) * Pert Kelton (1907–1968), American actress PERT * Program evaluation and review technique, or PERT Chart, a planning method * Postsecondary Education Readiness Test, a placement test used by Florida high schools and colleges * Pancreatic enzymes (medication), Pancreatic enzyme replacement therapy or PERT is a treatment for exocrine pancreatic insufficiency. Other uses * Pert Plus, a brand of shampoo marketed in Australia and New Zealand as Pert * P e ^ , an expression to calculate the expected return from a Compound interest#Continuous compounding, continuously compounded investment given the principal, rate, and time See also * * Peart, a surname {{Disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The American Statistician
''The American Statistician'' is a quarterly peer-reviewed scientific journal covering statistics published by Taylor & Francis on behalf of the American Statistical Association. It was established in 1947. The editor-in-chief An editor-in-chief (EIC), also known as lead editor or chief editor, is a publication's editorial leader who has final responsibility for its operations and policies. The editor-in-chief heads all departments of the organization and is held accoun ... is Daniel R. Jeske, a professor at the University of California, Riverside. External links * Taylor & Francis academic journals Statistics journals Academic journals established in 1947 English-language journals Quarterly journals 1947 establishments in the United States Academic journals associated with learned and professional societies of the United States {{statistics-journal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pert Example Gantt Chart
Pert or PERT may refer to: Ships * - see List of United States Navy ships: P * , a World War II corvette, originally HMS ''Nepeta'' * ''Pert'' (sidewheeler), a 19th-century steamboat that operated in British Columbia, Canada Statistics * PERT distribution People * Pert (surname) * Pert Kelton (1907–1968), American actress PERT * Program evaluation and review technique, or PERT Chart, a planning method * Postsecondary Education Readiness Test, a placement test used by Florida high schools and colleges * Pancreatic enzyme replacement therapy or PERT is a treatment for exocrine pancreatic insufficiency Exocrine pancreatic insufficiency (EPI) is the inability to properly digest food due to a lack or reduction of digestive enzymes made by the pancreas. EPI can occur in humans and is prevalent in many conditions such as cystic fibrosis, Shwach .... Other uses * Pert Plus, a brand of shampoo marketed in Australia and New Zealand as Pert * P e ^ , an expression to ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gantt Chart
A Gantt chart is a bar chart that illustrates a schedule (project management), project schedule. It was designed and popularized by Henry Gantt around the years 1910–1915. Modern Gantt charts also show the Dependency (project management), dependency relationships between activities and the current schedule status. Definition A Gantt chart is a type of bar chart that illustrates a project schedule. This chart lists the tasks to be performed on the vertical axis, and time intervals on the horizontal axis. The width of the horizontal bars in the graph shows the duration of each activity. Gantt charts illustrate the start and finish dates of the terminal elements and summary elements of a project. Terminal elements and summary elements constitute the work breakdown structure of the project. Modern Gantt charts also show the Dependency (project management), dependency (i.e., precedence network) relationships between activities. Gantt charts can be used to show current schedule sta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Critical Path Method
The critical path method (CPM), or critical path analysis (CPA), is an algorithm for schedule (project management), scheduling a set of project activities. A critical path is determined by identifying the longest stretch of dependent activities and measuring the time required to complete them from start to finish. It is commonly used in conjunction with the program evaluation and review technique (PERT). History The CPM is a project-modeling technique developed in the late 1950s by Morgan R. Walker of DuPont and James E. Kelley Jr. of Remington Rand. Kelley and Walker related their memories of the development of CPM in 1989. Kelley attributed the term "critical path" to the developers of the PERT, which was developed at about the same time by Booz Allen Hamilton and the U.S. Navy. The precursors of what came to be known as critical path were developed and put into practice by DuPont between 1940 and 1943 and contributed to the success of the Manhattan Project. Critical path ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lead
Lead () is a chemical element; it has Chemical symbol, symbol Pb (from Latin ) and atomic number 82. It is a Heavy metal (elements), heavy metal that is density, denser than most common materials. Lead is Mohs scale, soft and Ductility, malleable, and also has a relatively low melting point. When freshly cut, lead is a shiny gray with a hint of blue. It tarnishes to a dull gray color when exposed to air. Lead has the highest atomic number of any stable nuclide, stable element and three of its isotopes are endpoints of major nuclear decay chains of heavier elements. Lead is a relatively unreactive post-transition metal. Its weak metallic character is illustrated by its Amphoterism, amphoteric nature; lead and lead oxides react with acids and base (chemistry), bases, and it tends to form covalent bonds. Lead compounds, Compounds of lead are usually found in the +2 oxidation state rather than the +4 state common with lighter members of the carbon group. Exceptions are mostly limited ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Critical Path Method
The critical path method (CPM), or critical path analysis (CPA), is an algorithm for schedule (project management), scheduling a set of project activities. A critical path is determined by identifying the longest stretch of dependent activities and measuring the time required to complete them from start to finish. It is commonly used in conjunction with the program evaluation and review technique (PERT). History The CPM is a project-modeling technique developed in the late 1950s by Morgan R. Walker of DuPont and James E. Kelley Jr. of Remington Rand. Kelley and Walker related their memories of the development of CPM in 1989. Kelley attributed the term "critical path" to the developers of the PERT, which was developed at about the same time by Booz Allen Hamilton and the U.S. Navy. The precursors of what came to be known as critical path were developed and put into practice by DuPont between 1940 and 1943 and contributed to the success of the Manhattan Project. Critical path ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Float (project Management)
In project management, float or slack is the amount of time that a task in a project network can be delayed without causing a delay to: * subsequent tasks ("''free float''") * project completion date ("''total float''"). ''Total float'' is associated with the path. If a project network chart/diagram has 4 non-critical paths, then that project would have 4 ''total float'' values. The ''total float'' of a path is the combined ''free float'' values of all activities in a path. The ''total float'' represents the schedule flexibility and can also be measured by subtracting early start dates from late start dates of path completion. Float is core to critical path method, with the total floats of noncritical activities key to computing the critical path drag of an activity, i.e., the amount of time it is adding to the project's duration.* Example Consider the process of replacing a broken pane of glass in the window of your home. There are various component activities involved in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harold Bright Maynard
Harold Bright Maynard (Oct. 18, 1902 - Mar. 10, 1975) was an American industrial engineer, consulting engineer at the Methods Engineering Council, and management author. He is known as the "Broadway counsel for industries, railroads, state governments" and as recipient of the Henry Laurence Gantt Medal in 1964. Life and work Maynard was born in 1902 in Northampton, Massachusetts to William Clement Maynard and Edith Lucia (Clark) Maynard. He attended the Protestant Episcopal Academy in Philadelphia, where he graduated in 1919. In 1923 he obtained his M.Sc in mechanical engineering at Cornell University.''Who's who in Commerce and Industry.'' Vol. 6, 1948. p. 921 After his graduation in 1923 he started as a graduate student in the production steam division of Westinghouse Electric Corporation in Pittsburgh, where he was employed until 1929. From 1929 to 1934 he studied industrial problems in the U.S. and in Europe. In 1934 he founded the consulting firm ''Methods Engineering Cou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Work Breakdown Structure
A work-breakdown structure (WBS) in project management and systems engineering is a breakdown of a project into smaller components. It is a key project management element that organizes the team's work into manageable sections. The Project Management Body of Knowledge defines the work-breakdown structure as a "hierarchical decomposition of the total scope of work to be carried out by the project team to accomplish the project objectives and create the required deliverables." A WBS provides the necessary framework for detailed cost estimation and control while providing guidance for schedule development and control.Booz, Allen & HamiltoEarned Value Management Tutorial Module 2: Work Breakdown Structure science.energy.gov. Ac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bibliography
Bibliography (from and ), as a discipline, is traditionally the academic study of books as physical, cultural objects; in this sense, it is also known as bibliology (from ). English author and bibliographer John Carter describes ''bibliography'' as a word having two senses: one, a list of books for further study or of works consulted by an author (or enumerative bibliography); the other one, applicable for collectors, is "the study of books as physical objects" and "the systematic description of books as objects" (or descriptive bibliography). Etymology The word was used by Greek writers in the first three centuries CE to mean the copying of books by hand. In the 12th century, the word started being used for "the intellectual activity of composing books." The 17th century then saw the emergence of the modern meaning, that of description of books. Currently, the field of bibliography has expanded to include studies that consider the book as a material object. Bibliography, i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Librarian
A librarian is a person who professionally works managing information. Librarians' common activities include providing access to information, conducting research, creating and managing information systems, creating, leading, and evaluating educational programs, and providing instruction on information literacy to users. The role of the librarian has changed over time, with the past century in particular bringing many new media and technologies into play. From the earliest libraries in the ancient world to the modern information hub, there have been keepers and disseminators of the information held in data stores. Roles and responsibilities vary widely depending on the type of library, the specialty of the librarian, and the functions needed to maintain collections and make them available to its users. Education for librarianship has changed over time to reflect changing roles. History The ancient world The Sumerians were the first to train clerks to keep records of accounts. '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
