检索结果-内蒙古大学图书馆

ChatGPT as an Instructor's Assistant for Generating and Scoring Exams

JOURNAL OF CHEMICAL EDUCATION 2024年第9期101卷 3780-3788页

作者： Fernandez, Alberto A. Lopez-Torres, Margarita Fernandez, Jesus J. Vazquez-Garcia, Digna Univ A Coruna Fac Ciencias Dept Quim La Coruna 15071 Spain Univ A Coruna Ctr Invest Cient Avanzadas La Coruna 15071 Spain

Generative intelligence technologies like ChatGPT hold significant promise across various sectors, particularly in education. This study assessed ChatGPT's proficiency in responding to questions from University Entrance Exams typically administered to senior secondary students. Our findings indicate that ChatGPT version 4.0 consistently outperformed students, achieving higher average scores across exams from the past four years. However, it still committed errors in about 20% of its responses. Despite this, ChatGPT 4.0 demonstrated a robust capability to comprehend and produce natural language within a chemical context. Consequently, by applying diverse prompt engineering techniques, this AI was able to create short-answer questions and numerical problems that closely mimic the format and conceptual content of University Entrance Exams. We also confirmed that ChatGPT 4.0 could grade exams, showing a significant correlation with scores given by human evaluators but lower than that among human graders. This discrepancy and other practical considerations limit its application in grading exams.

关键词： General Public Cheminformatics Public Understanding/Outreach computer-based learning Testing/Assessment

来源：评论

学校读者我要写书评

暂无评论

Organic Chemistry and the Challenge of Representations: Student Difficulties with Different Representation Forms When Switching from Paper-Pencil to Digital Format

引用

JOURNAL OF CHEMICAL EDUCATION 2024年第11期101卷 4566-4579页

作者： Schuessler, Katrin Rodemer, Marc Giese, Michael Walpuski, Maik Univ Duisburg Essen Dept Chem Schuetzenbahn 70 D-45127 Essen Germany

The ability to draw molecules based on a given IUPAC name is a fundamental skill in organic chemistry. University students need to acquire appropriate and automated cognitive schemata to master drawing molecules before they can be considered to meaningfully be introduced to face up to reaction equations, cascades, or mechanisms. Similar to experts in organic chemistry, organic chemistry books and digital drawing tools predominantly use skeletal formulas to communicate about organic chemistry. Students must acquire the ability to use this specific representation type as part of their professional development. The present study investigates (1) which representation form beginners in organic chemistry use to draw molecules when they can choose, (2) whether errors between a paper-pencil format (free choice of representation form) and digital format (skeletal formula requested) differ, and (3) to which extent answer correctness and occurrence of error types change when a student's preferred representation form is not available. For this investigation, a within subject design is used. The results show that the skeletal formula is used when it is automatically suggested (in the digital format) but that alternative formulas are drawn when a representation form is freely chosen (in the paper-pencil format). Violations of the octet rule appear less frequently for digital molecule-drawing tasks, but missing answers are more prominent.

关键词： Second-Year Undergraduate Chemical Education Research computer-based learning Testing/Assessment Organic Chemistry Nomenclature/Units/Symbols

来源：评论

学校读者我要写书评

暂无评论

Physical Chemistry Lab for Data Analysis of COVID-19 Spreading Kinetics in Different Countries

引用

JOURNAL OF CHEMICAL EDUCATION 2024年第7期101卷 2892-2898页

作者： Athapaththu, Deepani V. Ambagaspitiya, Tharushi D. Chamberlain, Andrew Demase, Darrion Harasin, Emily Hicks, Robby Mcintosh, David Minute, Gwen Petzold, Sarah Tefft, Lauren Chen, Jixin Ohio Univ Nanoscale & Quantum Phenomena Inst Dept Chem & Biochem Athens OH 45701 USA

The COVID-19 pandemic has passed. It gives us a real-world example of kinetic data analysis practice for our undergraduate physical chemistry laboratory class. It is a great example to connect this seemingly very different problem to the kinetic theories for chemical reactions that the students have learned in the lecture class. At the beginning of the spring 2023 semester, we obtained COVID-19 kinetic data from the "Our World in Data" database, which summarizes the World Health Organization (WHO) data reported from different countries. We analyzed the effective spreading kinetics based on the susceptible-infectious-recovered-vaccinated (SIR-V) model. We then compared the effective rate constants represented by the real-time reproduction numbers (R-t) underlining the reported data for these countries and discussed the results and the limitations of the model with the students.

关键词： Upper-Division Undergraduate Physical Chemistry computer-based learning Kinetics

来源：评论

学校读者我要写书评

暂无评论

Building an Arduino-based Open-Source Programmable Multichannel Syringe Pump: A Useful Tool for Fluid Delivery in Microfluidics and Flow Chemistry

引用

JOURNAL OF CHEMICAL EDUCATION 2024年第5期101卷 1951-1958页

作者： Wu, Yuting Chen, Yuxin Cheng, Yi Tsinghua Univ Dept Chem Engn Beijing 100084 Peoples R China

Microfluidics has attracted widespread interest in the fields of chemicals, materials, pharmaceuticals, biology, etc. Integrating low-cost automation based on open-source hardware/software to improve lab security and reduce time consumption is demanded in microchemical processing. In this work, we developed a "do it yourself" multichannel syringe pump by using easily available low-cost components and microcontrollers, which can be used for educational and/or research purposes in the study of microfluidics and flow chemistry. An Arduino UNO board with CNC shield expansion board and A4988 stepper motor driver is used to control the injection volume and rate of the four syringes. The Arduino-based open-source community minimizes the technical knowledge required to build the system and makes it readily shareable. Detailed fabrication guidelines are provided for the device, which is priced well below commercial alternatives and promotes the development of open hardware for microprocess engineering. The operation of the syringe pump can be controlled by the Arduino IDE or other software through the serial port, which is very beneficial for integration with other devices. Moreover, this multichannel syringe pump is also programmable and can be automatically operated. In order to verify the utility of the platform, we have carried out relevant demonstration experiments of microcapsule preparation for functioning cosmetic product and droplet generation based on microfluidic technique. From an educational point of view, students in the lab have the opportunity to learn how to design and build chemistry experimental devices from principles and demands in a hands-on learning environment, preparing them to work in modern and intelligent laboratories.

关键词： Upper-Division Undergraduate Education/Research computer-based learning Laboratory Equipment/Apparatus Hands-On learning/Manipulatives

来源：评论

学校读者我要写书评

暂无评论

Pressure's On: Exploring the Course of Chemical Reactions with ARDUINO and GeoGebra in a Hands-On Science Approach

引用

JOURNAL OF CHEMICAL EDUCATION 2024年第7期101卷 2912-2919页

作者： Lossjew, Jannik Bernholt, Sascha Leibniz Inst Sci & Math Educ Dept Chem Educ D-24118 Kiel Germany

For the acquisition of scientific literacy, which includes not only content knowledge but also epistemological knowledge, appropriate classroom settings are crucial to achieving this objective. This work presents an educational activity which is combining both the acquisition of content knowledge as well as epistemological knowledge by not only applying typical methods of measurement (ARDUINO-based pressure sensor) and data analysis in the context of chemical kinetics but also discussing results for the planning of further investigations. Since these typical research methods in chemistry are strongly characterized by a high degree of digitization, we first summarized the use of digital tools in chemistry education to show the variety of envisaged goals through digital enhancement. On this basis, we propose a teaching activity that is connecting basic didactic functions of digital tools (learning companion, learning tool, and experimental tool) with a proper reflection of digitally characterized research processes in chemistry. In this activity, we show how digital tools can be used not for the sake of it but to promote a proper understanding of research processes and to exploit the didactic advantages of the proposed tools. We focus on the use of open educational resource software (ARDUINO, GeoGebra) as financial barriers often hinder the transfer of new teaching concepts into schools. We evaluated the activity in a pre-service chemistry teacher course to test its feasibility from the future teachers' perspective and to explore their openness to such learning scenarios. Overall, the evaluation showed that the activity is well-accepted and seems to have great potential for long-term use in chemistry classes. The article concludes with an outlook of further experiments for which the presented pressure sensor is applicable.

关键词： High School Introductory Chemistry Open EducationalResources Physical Chemistry Calculator-basedlearning computer-based learning Hands-On learning Kinetics Laboratory Equipment Reactions

来源：评论

学校读者我要写书评

暂无评论

Assignment of Regioisomers Using Infrared Spectroscopy: A Python Coding Exercise in Data Processing and Machine learning

引用

JOURNAL OF CHEMICAL EDUCATION 2024年第7期101卷 2925-2932页

作者： Cahill, Samuel T. Young, Joseph E. B. Howe, Max Clark, Ryan Worrall, Andrew F. Stewart, Malcolm I. Univ Oxford Dept Chem Chem Teaching Lab Oxford OX1 3PS England

Machine learning is a set of tools that are increasingly used in the field of chemistry. The introduction of potential uses of machine learning to undergraduate chemistry students should help to increase their comprehension of and interest in machine learning processes and can help support them in their transition into graduate research and industrial environments that use such tools. Herein we present an exercise aimed at introducing machine learning alongside improving students' general Python coding abilities. The exercise aims to identify the regioisomerism of disubstituted benzene systems solely from infrared spectra, a simple and ubiquitous undergraduate technique. The exercise culminates in students collecting their own spectra of compounds with unknown regioisomerism and predicting the results, allowing them to take ownership of their results and creating a larger database of information to draw upon for machine learning in the future.

关键词： Upper-Division Undergraduate computer-based learning Chemometrics

来源：评论

学校读者我要写书评

暂无评论

Exploring the Synergy of Cognitive Dissonance and Computational Chemistry-A Task Design for Supporting learning in Organic Chemistry

引用

JOURNAL OF CHEMICAL EDUCATION 2025年第3期102卷 1129-1137页

作者： Lieber, Leonie S. Graulich, Nicole Licini, Giulia Orian, Laura Justus Liebig Univ Giessen Inst Chem Educ D-35392 Giessen Germany Univ Padua Dipartimento Sci Chim I-35131 Padua Italy

Organic and computational chemistry are increasingly interconnected, with computational methods now being essential for understanding complex reaction mechanisms. Thus, integrating computational chemistry into organic chemistry is crucial for supporting students in arguing with evidence and gaining a deeper understanding of chemical concepts that traditional experimental approaches have struggled to elucidate. This integration of computational methods is now essential in modern organic chemistry and should be introduced to the classrooms of students. An authentic learning experience that uses data from computational chemistry calculations and allows students to make a claim about structure-property relationships can bridge the gap between theoretical and experimental approaches, fostering students' understanding of chemical concepts and enhancing their problem-solving skills. This study investigates how integrating organic chemical problems into a computational chemistry course can be achieved by a task design that aims to induce cognitive dissonance. In this task design, eight students first build written arguments for the most stable conformation of simple disubstituted ethanes, i.e., 1,2-difluoroethane and 1,2-dichloroethane, followed by computational calculations to verify or revise their arguments. The study examined how cognitive dissonance affects students' perceived confidence, their written argumentation, and their overall task evaluation. The results indicated that the task design successfully induced cognitive dissonance, leading to a drop in confidence after computational results contradicted students' arguments. The evaluation revealed that students rated the task design to be cognitively demanding but also to be engaging and beneficial for understanding chemical concepts. The study's implications emphasize the potential for integrating computational data into organic chemistry as a means to critically evaluate one's arguments and gain a deeper understa

关键词： Upper-Division Undergraduate Organic Chemistry computer-based learning ProblemSolving/Decision Making Computational Chemistry Conformational Analysis

来源：评论

学校读者我要写书评

暂无评论

Empowering Blind and Partially Sighted Middle School Female Students to Pursue STEM Fields

引用

JOURNAL OF CHEMICAL EDUCATION 2025年第5期102卷 1940-1948页

作者： Chehadeh, Dduha Dashti, Batoul Rashid, Ibtisam Kuwait Inst Sci Res Syst & Software Dev Dept Sci & Technol Sect Safat 13109 Kuwait

The planning, execution, and assessment of a science, namely, chemistry, day for blind and partially sighted female students are described. Twelve female students actively engaged in carrying out scientific experiments using assistive technology (AT). The activities focused mainly on the air around us and the relation between air pressure and volume, namely, Boyle's law. These activities consisted of hands-on experiments and a role-model presentation. The event was assessed through pre- and post-activity surveys from the published literature and by collecting students' comments. The students reported that the event was fun and that they learned a lot. The influence of a reputed role model on the female students was evident in their comments, motivating and inspiring them to pursue scientific goals. However, longitudinal studies are recommended to assess the change in female students' interest in science and foster their interest in pursuing scientific careers.

关键词： computer-based learning Hands-On learning/Manipulatives Laboratory Equipment/Apparatus Elementary/Middle SchoolScience Blindness Blind/Vision Impaired Disability Access

来源：评论

学校读者我要写书评

暂无评论

Machine learning for Infrared Spectral Classification of Polyvinyl butyrals with Identical Chemical Groups: An Example for Undergraduate Chemistry Classes

引用

JOURNAL OF CHEMICAL EDUCATION 2024年第2期101卷 328-336页

作者： Qiu, Raoyu Lin, Zequn Yang, Zican Gao, Liang Guangdong Univ Technol Sch Chem Engn & Light Ind Guangzhou 510006 Peoples R China Rongjiang Lab Jieyang Branch Chem & Chem Engn Guangdong Lab Jieyang 515200 Peoples R China

Machine learning (ML) is extensively applied in chemistry, particularly in vibrational spectroscopy. However, few teaching examples effectively demonstrate the capabilities of ML in classifying polymeric materials, exhibiting subtle spectral differences that elude visual discrimination. This study presents a teaching example specifically tailored for undergraduate students to acquire the skills necessary to employ ML models in the classification of infrared spectral data from different types of polyvinyl butyrals (PVBs). The course encompasses fundamental knowledge of PVB structure and synthesis, a comprehensive spectral analysis workflow for constructing classification models, specific data processing techniques, and practical implementation of a student-synthesized PVB product in a laboratory demonstration. Assessment of students' knowledge acquisition is conducted through assignments, and student attitudes toward this course via submitted self-reflection surveys are discussed. This study underscores the efficacy of classroom examples in developing students' abilities and fostering their interest in amalgamating chemistry and artificial intelligence. The knowledge and techniques acquired in this course hold practical implications for quality control, process monitoring, and material identification in industry.

关键词： Upper-Division Undergraduate Interdisciplinary/Multidisciplinary computer-based learning Chemometrics

来源：评论

学校读者我要写书评

暂无评论

Glycerol as a Cryoprotectant: An Undergraduate Experiment Using Differential Scanning Calorimetry to Study Glycerol-Water Mixtures

引用

JOURNAL OF CHEMICAL EDUCATION 2024年第4期101卷 1696-1702页

作者： Schwab, Alexander D. Appalachian State Univ Dept Chem & Fermentat Sci Boone NC 28608 USA

This study describes a laboratory experiment performed with undergraduate physical chemistry students utilizing differential scanning calorimetry (DSC) to determine a eutectic phase diagram, measure solution glass transition temperatures (T g), and predict the glass transition temperature (T g) of water. The DSC techniques employed determine accurate equilibrium freezing temperatures (T f) of glycerol-water mixtures with glycerol mole fractions (x g) between 0 and 0.201. When x g >= 0.300, the slow rate of crystallization of glycerol inhibits crystallization, and solutions exhibit a T g rather than a T f. The T f's serve to discuss solid-liquid equilibria and estimate eutectic phase diagrams with varying levels of accuracy. The T g's serve to estimate the T g of water (135.3 +/- 1.2 K). Together, these behaviors allow for discussion of glycerol's effectiveness as a cryoprotectant.

关键词： Upper-Division Undergraduate Physical Chemistry Polymer Chemistry Inquiry-based learning Hands-On learning computer-based learning BiophysicalChemistry Laboratory Computing Materials Science Mathematics Physical Properties Solutions Thermodynamics Water

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：