Search Results - "ESPINAL, ALEJANDRO"

Assessing Disciplinary Teachers'Pedagogical and Content Knowledge in Computational Thinking.

Authors: Espinal, Alejandro Vieira, Camilo Magana, Alejandra J.

Source: TechTrends: Linking Research & Practice to Improve Learning. Sep2025, Vol. 69 Issue 5, p883-899. 17p.

Subject Terms: *Pedagogical content knowledge, *Lesson planning, *Evaluation methodology, *Educators, *Interdisciplinary education, *Teacher training, *Problem solving, *Teacher education

Student Ability and Difficulties with Transfer from a Block-Based Programming Language into Other Programming Languages: A Case Study in Colombia

Authors: Espinal, Alejandro Vieira, Camilo Guerrero-Bequis, Valeria

Source: Computer Science Education. 2023 33(4):567-599.

Peer Reviewed: Y

Page Count: 33

Descriptors: Block Scheduling, Computer Science Education, Programming Languages, Coding, Transfer of Training, Problem Solving, Difficulty Level, Learning Activities, English (Second Language), Second Language Learning, Foreign Countries, Thinking Skills, Faculty Development, Lesson Plans

Geographic Terms: Colombia

Electronic structure-based design rules for noble gas complexes.

Authors: Vásquez-Espinal, Alejandro Báez-Grez, Rodrigo Pino-Rios, Ricardo

Source: Dalton Transactions: An International Journal of Inorganic Chemistry. 11/21/2025, Vol. 54 Issue 43, p16170-16176. 7p.

Subjects: Noble gases, Electronic structure, Chemical stability, Computer simulation, Reactivity (Chemistry), Electron configuration

Hacia una educación equitativa en ciencias de la computación.

Alternate Title: Towards equitable computer science education.

Authors: VIEIRA, CAMILO ESPINAL, ALEJANDRO CHIU, JENNIFER et al.

Source: Revista EIA. jul-dic2024, Vol. 21 Issue 42, p1-24. 24p.

Planar and Pyramidal Pentacoordinate Selenium Atoms.

Authors: Diego, Luz Vásquez‐Espinal, Alejandro Islas, Rafael et al.

Source: Chemistry - A European Journal; 12/23/2025, Vol. 31 Issue 72, p1-9, 9p

Assessment of a professional development program on computational thinking for disciplinary teachers.

Authors: Espinal, Alejandro Magana, Alejandra J.

Source: Proceedings of the ASEE Annual Conference & Exposition. 2022, p1-8. 8p.

Planar Elongated B 12 Structure in M 3 B 12 Clusters (M = Cu-Au).

Authors: Solar-Encinas, José Vásquez-Espinal, Alejandro Leyva-Parra, Luis et al.

Source: Molecules. Jan2023, Vol. 28 Issue 1, p236. 12p.

Unveiling the electronic and structural consequences of removing two electrons from B12H12²⁻.

Authors: Hernández-Juárez, Gerardo Vásquez-Espinal, Alejandro Murillo, Fernando et al.

Source: Dalton Transactions: An International Journal of Inorganic Chemistry. 12/14/2023, Vol. 52 Issue 46, p17398-17406. 9p.

Subjects: Conduction electrons, Potential energy surfaces, Electrons

Li6E5Li6: Tetrel Sandwich Complexes with 10‐π‐Electrons.

Authors: Inostroza, Diego Leyva‐Parra, Luis Pino‐Rios, Ricardo et al.

Source: Angewandte Chemie International Edition; 1/25/2024, Vol. 63 Issue 5, p1-7, 7p

Unveiling the electronic and structural consequences of removing two electrons from B12H12²⁻.

Authors: Hernández-Juárez, Gerardo Vásquez-Espinal, Alejandro Murillo, Fernando et al.

Source: Dalton Transactions: An International Journal of Inorganic Chemistry. 12/14/2023, Vol. 52 Issue 46, p17398-17406. 9p.

Aromaticity of [M3(µ‐X)3X6]^0/2– (M = Re and Tc, X = Cl, Br, I) Clusters Confirmed by Ring Current Analysis and Induced Magnetic Field.

Authors: Rabanal‐león, Walter A. Vásquez‐espinal, Alejandro Yañez, Osvaldo et al.

Source: European Journal of Inorganic Chemistry. 7/31/2018, Vol. 2018 Issue 28, p3312-3319. 8p.

E5M7⁺ (E=C–Pb, M=Li–Cs): A Source of Viable Star‐Shaped Clusters.

Authors: Vásquez‐Espinal, Alejandro Palacio‐Rodríguez, Karen Ravell, Estefanía et al.

Source: Chemistry - An Asian Journal. 7/4/2018, Vol. 13 Issue 13, p1751-1755. 5p.

Roversa: A low-cost, multilingual robotics platform for K-12 computer science integration.

Authors: Bredder, Eric Wilkens, Kim Espinal, Alejandro et al.

Source: Educational Technology Research & Development. Jun2026, p1-32. 32p.

Revisiting Aromaticity and Chemical Bonding of Fluorinated Benzene Derivatives.

Authors: Torres‐Vega, Juan J. Vásquez‐Espinal, Alejandro Ruiz, Lina et al.

Source: ChemistryOpen. Jun2015, Vol. 4 Issue 3, p302-307. 6p.

Planar Hypercoordinate Carbons in Alkali Metal Decorated CE32− and CE22− Dianions.

Authors: Leyva‐Parra, Luis Diego, Luz Inostroza, Diego et al.

Source: Chemistry - A European Journal; Dec2021, Vol. 27 Issue 67, p16701-16706, 6p

The molecular diagnosis of pelvic tuberculosis: a case report.

Alternate Title: Diagnóstico molecular de tuberculosis pélvica: reporte de caso.

Authors: Faccini-Martínez, Álvaro A. Espinal, Alejandro Jojoa, Jimena et al.

Source: Revista de Salud Pública. mar/apr2014, Vol. 14 Issue 2, p350-355. 6p.

Subjects: TUBERCULOSIS case studies, EMERGING infectious diseases, MYCOBACTERIUM tuberculosis, COMMUNICABLE diseases in women, PELVIC diseases, DIAGNOSIS

Planar Hexacoordinate Carbons: Half Covalent, Half Ionic.

Authors: Leyva‐Parra, Luis Diego, Luz Yañez, Osvaldo et al.

Source: Angewandte Chemie International Edition; 4/12/2021, Vol. 60 Issue 16, p8700-8704, 5p

Structure–antioxidant activity relationships in boldine and glaucine: a DFT study.

Authors: Vásquez-Espinal, Alejandro Yañez, Osvaldo Osorio, Edison et al.

Source: New Journal of Chemistry. 1/14/2021, Vol. 45 Issue 2, p590-596. 7p.

Chitosan/P3HT biohybrid films as polymer matrices for the in‐situ synthesis of CdSe quantum dots. Experimental and theoretical studies.

Authors: Moreno‐Serna, Viviana Méndez‐López, Maximiliano Vásquez‐Espinal, Alejandro et al.

Source: Journal of Applied Polymer Science. 9/20/2020, Vol. 137 Issue 36, p1-16. 16p.

Thermodynamic and kinetic insights into B10H14 and B10H14²⁻.

Authors: Hernández-Juárez, Gerardo Barroso, Jorge Vásquez-Espinal, Alejandro et al.

Source: Pure & Applied Chemistry. Nov2025, Vol. 97 Issue 11, p1711-1720. 10p.

Subjects: Chemical kinetics, Potential energy surfaces, Thermodynamics, Boranes, Dianions, Equilibrium, Properties of matter, Molecular dynamics