The life cycle of a mineral deposit: a teacher's guide for hands-on mineral education activities

10.3133/gip17 ◽  
2005 ◽  
Author(s):  
Dave Frank ◽  
John Galloway ◽  
Ken Assmus
Keyword(s):  
Life Cycle ◽  
Mineral Deposit ◽  
Hands On ◽  
Teacher's Guide

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.

scholarly journals COMPARING LIFE CYCLE IMPACT ASSESSMENT, CIRCULARITY AND SUSTAINABILITY INDICATORS FOR SUSTAINABLE DESIGN: RESULTS FROM A HANDS-ON PROJECT WITH 87 ENGINEERING STUDENTS

2021 ◽  
Vol 1 ◽  
pp. 681-690
Author(s):  
Michael Saidani ◽  
Mariia Kravchenko ◽  
François Cluzel ◽  
Daniela Pigosso ◽  
Yann Leroy ◽  
...  
Keyword(s):  
Life Cycle ◽  
Engineering Students ◽  
Environmental Indicators ◽  
Sustainability Indicators ◽  
Sustainability Performance ◽  
Hands On ◽  
Quantitative Results ◽  
Traditional Approaches ◽  
Shed Light ◽  
Do So

AbstractConsidering a growing number of metrics and indicators to assess circular economy, it is of paramount importance to shed light on how they differ from traditional approaches, such as life cycle assessment (LCA) or sustainability performance indicators. This study provides new empirical insights on the correlation between LCA, circularity, and sustainability indicator-based approaches. Specifically, the importance lies in analyzing how the results generated by these different approaches can be used to support the design of products that are not only circular, but also sustainable. A practice-based project involving 87 engineering students (divided into 20 groups) is conducted with the aim to compare and improve the circularity and sustainability performance of three product alternatives of lawn mowers (gasoline, electric, autonomous). To do so, the following resources are deployed: 18 midpoints environmental indicators calculated by LCA, eight product circularity indicators, and numerous leading sustainability indicators. Critical analyses on the usability, time efficiency, scientific soundness, and robustness of each approach are drawn, combining quantitative results generated by each group with the feedback of future engineers.

scholarly journals The emancipation of gestures

2021 ◽  
Author(s):  
Jürgen Streeck
Keyword(s):  
Life Cycle ◽  
Video Recording ◽  
Conceptual Representation ◽  
Hand Gestures ◽  
Interactional Linguistics ◽  
Symbolic Forms ◽  
Hands On ◽  
Communication Needs

Abstract Interactional linguists are interested in ways in which communicative resources emerge from interactional practice. This paper defines a place for the study of gesture within interactional linguistics, conceived as ‘linguistics of time’ (Hopper, 2015). It shows how hand gestures of a certain kind – conceptual gestures – emerge from ‘hands-on’ instrumental actions, are repeated and habitualized, and are taken to other communicative contexts where they enable displaced reference and conceptual representation of experiences. The data for this study is a video-recording of one work-day of an auto-shop owner (Streeck, 2017). The corpus includes auto-repair sequences in which he spontaneously improvises new gestures in response to situated communication needs, and subsequent narrative sequences during which he re-enacts them as he explains his prior actions. He also makes numerous ‘pre-fabricated’ gestures, gestures that circulate in the society at large and that are acquired by copying other conversationalists. They are ready-made manual concepts. The paper explains the life-cycle of conceptual gestures from spontaneous invention to social sedimentation and thereby sheds light on the ongoing emergence of symbolic forms in corporeal practice and intercorporeal communication.

scholarly journals A Systems Development Life Cycle Project for the AIS Class

2007 ◽  
Vol 4 (1) ◽  
Author(s):  
Ting J. Wang ◽  
Georgia Saemann ◽  
Hui Du
Keyword(s):  
Life Cycle ◽  
Relational Database ◽  
Business Processes ◽  
Accounting Information ◽  
Systems Design ◽  
Systems Development ◽  
Accounting Information Systems ◽  
Final Project ◽  
Development Life Cycle ◽  
Hands On

The Systems Development Life Cycle (SDLC) project was designed for use by an accounting information systems (AIS) class. Along the tasks in the SDLC, this project integrates students’ knowledge of transaction and business processes, systems documentation techniques, relational database concepts, and hands-on skills in relational database use. After completing this project, students will comprehend major steps in the process of designing, developing, and implementing a database application. Instructors can add additional and/or modify any requirements and elements based on their emphases in the process, as well as align the tasks according to the systems design approach used in the textbook. This project is constructed on the Systems Understanding Aid (SUA) manual case of Arens and Ward (2001). However, instructors can adopt any case by using the project as a template. This project can be used as a semester final project, split into parts, worked along with the systems development topics covered in class, or assigned to a second AIS course.

Ultrastructural analysis of “Sensory” surface nerve endings and “putative” neurotransmitter sites in Schistosoma mansoni Miracidia

1989 ◽  
Vol 47 ◽  
pp. 962-963
Author(s):  
Betty Ruth Jones ◽  
Steve Chi-Tang Pan
Keyword(s):  
Nervous System ◽  
Life Cycle ◽  
Schistosoma Mansoni ◽  
Snail Host ◽  
Complex Life Cycle ◽  
Rational Approach ◽  
Effective Control ◽  
The Social ◽  
Social And Economic Development ◽  
Basic Biology

INTRODUCTION: Schistosomiasis has been described as “one of the most devastating diseases of mankind, second only to malaria in its deleterious effects on the social and economic development of populations in many warm areas of the world.” The disease is worldwide and is probably spreading faster and becoming more intense than the overall research efforts designed to provide the basis for countering it. Moreover, there are indications that the development of water resources and the demands for increasing cultivation and food in developing countries may prevent adequate control of the disease and thus the number of infections are increasing.Our knowledge of the basic biology of the parasites causing the disease is far from adequate. Such knowledge is essential if we are to develop a rational approach to the effective control of human schistosomiasis. The miracidium is the first infective stage in the complex life cycle of schistosomes. The future of the entire life cycle depends on the capacity and ability of this organism to locate and enter a suitable snail host for further development, Little is known about the nervous system of the miracidium of Schistosoma mansoni and of other trematodes. Studies indicate that miracidia contain a well developed and complex nervous system that may aid the larvae in locating and entering a susceptible snail host (Wilson, 1970; Brooker, 1972; Chernin, 1974; Pan, 1980; Mehlhorn, 1988; and Jones, 1987-1988).

The Instructional SEM Laboratory at Iowa State University

1996 ◽  
Vol 54 ◽  
pp. 396-397
Author(s):  
L. S. Chumbley ◽  
M. Meyer ◽  
K. Fredrickson ◽  
F.C. Laabs
Keyword(s):  
Materials Science ◽  
Computer Network ◽  
Energy Dispersive Spectrometer ◽  
Computer Control ◽  
State University ◽  
Iowa State University ◽  
Internet Server ◽  
Schematic Layout ◽  
Hands On ◽  
Improve Instruction

The Materials Science Department at Iowa State University has developed a laboratory designed to improve instruction in the use of the scanning electron microscope (SEM). The laboratory makes use of a computer network and a series of remote workstations in a classroom setting to provide students with increased hands-on access to the SEM. The laboratory has also been equipped such that distance learning via the internet can be achieved.A view of the laboratory is shown in Figure 1. The laboratory consists of a JEOL 6100 SEM, a Macintosh Quadra computer that acts as a server for the network and controls the energy dispersive spectrometer (EDS), four Macintosh computers that act as remote workstations, and a fifth Macintosh that acts as an internet server. A schematic layout of the classroom is shown in Figure 2. The workstations are connected directly to the SEM to allow joystick and computer control of the microscope. An ethernet connection between the Quadra and the workstations allows students seated there to operate the EDS. Control of the microscope and joystick is passed between the workstations by a switch-box assembly that resides at the microscope console. When the switch-box assembly is activated a direct serial line is established between the specified workstation and the microscope via the SEM’s RS-232.

A freeze-fracture-etched study of the physarum polycephalum plasma membrane during early formation of the macroplasmodial stage

1993 ◽  
Vol 51 ◽  
pp. 346-347
Author(s):  
Randolph W. Taylor ◽  
Henrie Treadwell
Keyword(s):  
Plasma Membrane ◽  
Life Cycle ◽  
Growth Phase ◽  
Filter Paper ◽  
Physarum Polycephalum ◽  
Freeze Fracture ◽  
Petri Dish ◽  
Wire Screen ◽  
Wide Mouth ◽  
Sterile Filter

The plasma membrane of the Slime Mold, Physarum polycephalum, process unique morphological distinctions at different stages of the life cycle. Investigations of the plasma membrane of P. polycephalum, particularly, the arrangements of the intramembranous particles has provided useful information concerning possible changes occurring in higher organisms. In this report Freeze-fracture-etched techniques were used to investigate 3 hours post-fusion of the macroplasmodia stage of the P. polycephalum plasma membrane.Microplasmodia of Physarum polycephalum (M3C), axenically maintained, were collected in mid-expotential growth phase by centrifugation. Aliquots of microplasmodia were spread in 3 cm circles with a wide mouth pipette onto sterile filter paper which was supported on a wire screen contained in a petri dish. The cells were starved for 2 hrs at 24°C. After starvation, the cells were feed semidefined medium supplemented with hemin and incubated at 24°C. Three hours after incubation, samples were collected randomly from the petri plates, placed in plancettes and frozen with a propane-nitrogen jet freezer.

Students Involvement in Multilingual and Multicultural Community Services

2015 ◽  
Vol 22 (2) ◽  
pp. 77-89 ◽  
Author(s):  
Ying-Chiao Tsao
Keyword(s):  
Service Learning ◽  
Cultural Competence ◽  
Linguistically Diverse ◽  
Community Services ◽  
Cultural Humility ◽  
Self Assessment ◽  
Multicultural Community ◽  
Raising Awareness ◽  
Hands On ◽  
Teaching Learning

Promoting cultural competence in serving diverse clients has become critically important across disciplines. Yet, progress has been limited in raising awareness and sensitivity. Tervalon and Murray-Garcia (1998) believed that cultural competence can only be truly achieved through critical self-assessment, recognition of limits, and ongoing acquisition of knowledge (known as “cultural humility”). Teaching cultural humility, and the value associated with it remains a challenging task for many educators. Challenges inherent in such instruction stem from lack of resources/known strategies as well as learner and instructor readiness. Kirk (2007) further indicates that providing feedback on one's integrity could be threatening. In current study, both traditional classroom-based teaching pedagogy and hands-on community engagement were reviewed. To bridge a gap between academic teaching/learning and real world situations, the author proposed service learning as a means to teach cultural humility and empower students with confidence in serving clients from culturally/linguistically diverse backgrounds. To provide a class of 51 students with multicultural and multilingual community service experience, the author partnered with the Tzu-Chi Foundation (an international nonprofit organization). In this article, the results, strengths, and limitations of this service learning project are discussed.

A ’Hands-On’ Approach

ASHA Leader ◽  
2012 ◽  
Vol 17 (9) ◽  
pp. 55-55
Author(s):  
Kimberly Abts
Keyword(s):  
Hands On
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