Activities: Patterns and Puzzles for Pyramids and Prisms

1997 ◽  
Vol 90 (5) ◽  
pp. 370-384
Author(s):  
Duane DeTemple ◽  
Allen Miedema
Keyword(s):  
Problem Solving ◽  
Construction Projects ◽  
Three Dimensional ◽  
Spatial Visualization ◽  
Physical Models ◽  
Important Class ◽  
Concrete Foundation ◽  
Hands On ◽  
Teacher's Guide ◽  
Geometric Intuition

Teacher's Guide: The construction projects, puzzles, and experiments presented here provide hands-on experiences in spatial visualization and problem solving for an important class of three-dimensional figures: pyramids and prisms. Students will enjoy creating physical models and performing experiments with the models, but the main goals of the activities are to develop students' geometric intuition and build a concrete foundation on which abstract principles can be grounded.

Empirically validating five propositions regarding 3D visualizations for subsurface utility projects

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Mechiel van Manen ◽  
Léon olde Scholtenhuis ◽  
Hans Voordijk
Keyword(s):  
Construction Projects ◽  
3D Visualization ◽  
Three Dimensional ◽  
Urban Environments ◽  
Content Type ◽  
Complexity Level ◽  
Daily Work ◽  
Complex Projects ◽  
Project Complexity ◽  
Multiple Case

PurposeThis study aims to empirically validate five propositions about the benefits of three-dimensional (3D) visualizations for the management of subsurface utility projects. Specifically, the authors validate whether benefits from 3D in the literature of building construction project management also apply to subsurface utility projects and map them using a taxonomy of project complexity levels.Design/methodology/approachA multiple case study of three utility construction projects was carried out during which the first author was involved in the daily work practices at a utility contractor. 3D visualizations of existing project models were developed, and design and construction meetings were conducted. Practitioners' interactions with and reflections on these 3D visualizations were noted. Observational data from the three project types were matched with the five propositions to determine where benefits of 3D visualizations manifested themselves.FindingsPractitioners found that 3D visualizations had most merit in crowded urban environments when constructing rigid pipelines. All propositions were validated and evaluated as beneficial in subsurface utility projects of complexity level C3. It is shown that in urban projects with rigid pipelines (project with the highest complexity level), 3D visualization prevents misunderstanding or misinterpretations and increases efficiency of coordination. It is recommended to implement 3D visualization approaches in such complex projectsOriginality/valueThere is only limited evidence on the value 3D visualizations in managing utility projects. This study contributes rich empirical evidence on this value based on a six-month observation period at a subsurface contractor. Their merit was assessed by associating 3D approaches with project complexity levels, which may help utility contractors in strategically implementing 3D applications.

The superiority of three-dimensional physical models to two-dimensional computer presentations in anatomy learning

2018 ◽  
Vol 52 (11) ◽  
pp. 1138-1146 ◽  
Author(s):  
Bruce Wainman ◽  
Liliana Wolak ◽  
Giancarlo Pukas ◽  
Eric Zheng ◽  
Geoffrey R Norman
Keyword(s):  
Three Dimensional ◽  
Physical Models ◽  
Two Dimensional

scholarly journals Protein Folding: Search for Basic Physical Models

2003 ◽  
Vol 3 ◽  
pp. 623-635 ◽  
Author(s):  
Ivan Y. Torshin ◽  
Robert W. Harrison
Keyword(s):  
Protein Folding ◽  
Tertiary Structure ◽  
Three Dimensional ◽  
Physical Models ◽  
Dimensional Structure ◽  
Computational Techniques ◽  
Linear Sequence ◽  
Physical Forces

How a unique three-dimensional structure is rapidly formed from the linear sequence of a polypeptide is one of the important questions in contemporary science. Apart from biological context ofin vivoprotein folding (which has been studied only for a few proteins), the roles of the fundamental physical forces in thein vitrofolding remain largely unstudied. Despite a degree of success in using descriptions based on statistical and/or thermodynamic approaches, few of the current models explicitly include more basic physical forces (such as electrostatics and Van Der Waals forces). Moreover, the present-day models rarely take into account that the protein folding is, essentially, a rapid process that produces a highly specific architecture. This review considers several physical models that may provide more direct links between sequence and tertiary structure in terms of the physical forces. In particular, elaboration of such simple models is likely to produce extremely effective computational techniques with value for modern genomics.

Contractual Complexity in Construction Projects

2018 ◽  
Vol 49 (3) ◽  
pp. 46-61 ◽  
Author(s):  
Wenqian Wang ◽  
Yongqiang Chen ◽  
Shuibo Zhang ◽  
Yu Wang
Keyword(s):  
Structural Equation Modeling ◽  
Scale Development ◽  
Structural Equation ◽  
Construction Projects ◽  
Construction Project ◽  
Three Dimensional ◽  
Modeling Technique ◽  
Equation Modeling ◽  
Empirical Testing ◽  
Item Scale

Building on the multifunctional perspective from current contract theory, we conceptualize contractual complexity as a three-dimensional construct to depict the explicitness and elaborateness of control, coordination, and adaptation provisions in a construction project contract. A 13-item scale with construction project features is developed for measuring the different aspects of contractual complexity following rigorous scale development procedures. Using the structural equation modeling technique, empirical testing results demonstrate that all of the three components contribute significantly to contractual complexity. Further analysis indicated that treating contractual complexity in the three-functional way outperforms the unidimensional one regarding power to explain satisfaction and strong-form opportunism.

scholarly journals Implementing a 3D printing service in a biomedical library

2017 ◽  
Vol 105 (1) ◽  
Author(s):  
Verma Walker, MLIS
Keyword(s):  
Problem Solving ◽  
3D Printing ◽  
3D Modeling ◽  
Three Dimensional ◽  
National Institutes Of Health ◽  
3D Printer ◽  
Service Model ◽  
Steep Learning Curve ◽  
3D Printers ◽  
Creative Problem

Three-dimensional (3D) printing is opening new opportunities in biomedicine by enabling creative problem solving, faster prototyping of ideas, advances in tissue engineering, and customized patient solutions. The National Institutes of Health (NIH) Library purchased a Makerbot Replicator 2 3D printer to give scientists a chance to try out this technology. To launch the service, the library offered training, conducted a survey on service model preferences, and tracked usage and class attendance. 3D printing was very popular, with new lab equipment prototypes being the most common model type. Most survey respondents indicated they would use the service again and be willing to pay for models. There was high interest in training for 3D modeling, which has a steep learning curve. 3D printers also require significant care and repairs. NIH scientists are using 3D printing to improve their research, and it is opening new avenues for problem solving in labs. Several scientists found the 3D printer so helpful they bought one for their labs. Having a printer in a central and open location like a library can help scientists, doctors, and students learn how to use this technology in their work.

Sign in / Sign up

Export Citation Format

Share Document