ChemPad: A Pedagogical Tool For Exploring Handwritten Organic Molecules
نویسنده
چکیده
Molecules are inherently three-dimensional objects that are represented by chemists on paper and classroom blackboards by a system of two-dimensional notations. A major hurdle for aspiring chemists in college courses is to be able to visualize the actual 3D structure from the dimensionally-deficient 2D drawings. ChemPad, a new Tablet PC application with a pedagogical focus was designed and implemented to generate 3D molecular structures from hand drawn digital ink. This paper addresses the ChemPad system, the algorithms involved in interpreting 3D molecular structure from 2D ink, and the pedagogical design of the software.
منابع مشابه
Persian Handwritten Digit Recognition Using Particle Swarm Probabilistic Neural Network
Handwritten digit recognition can be categorized as a classification problem. Probabilistic Neural Network (PNN) is one of the most effective and useful classifiers, which works based on Bayesian rule. In this paper, in order to recognize Persian (Farsi) handwritten digit recognition, a combination of intelligent clustering method and PNN has been utilized. Hoda database, which includes 80000 P...
متن کاملExploring Iranian EAP Teachers' Pedagogical Content Knowledge and Their Professional Identity
This study was conducted in English for Academic Purposes (EAP) context to explore Iranian teachers' perceptions of their pedagogical content knowledge (PCK) and their sense of professional identity (PI) as well as to scrutinize how their cognitions were practiced in EAP classes. To this end, two ELT teachers and two content instructors (i.e. subject experts who teach EAP courses in addition to...
متن کاملPedagogical infrastructures for inquiry 1
In the present article, a specified Pedagogical Infrastructure Framework, including technical, social, epistemological and cognitive components, is introduced as a conceptual tool for design-based research to examine the design of complex learning settings. The applicability of the framework was assessed by retrospectively exploring an evolving design effort in four, consecutive, undergraduate ...
متن کاملDeveloping and Validating a Model for Exploring Iranian EFL Teachers’ Perception of Professional Development
The present study aimed at exploring Iranian EFL teachers’ perception of professional development. To this end, 200 EFL teachers teaching at private language institutes in Iran were selected as the participants of the study. First, a semi-structured interview was conducted with 50 participants of the study based on which Professional Development Perception Questionnaire was developed an...
متن کاملModification of mesoporous silica SBA-15 with different organic molecules to gain chemical sensors: a review
The recognition of the biologically and environmentally important ions is of great interest in the field of chemical sensors in recent years. The fluorescent sensors as a powerful optical analytical technique for the detection of low level of various analytes such as anions and metal cations have been progressively developed due to the simplicity, cost effective, and selectivity for monitoring ...
متن کامل