Academic literature on the topic 'Research Subject Categories – CHEMICAL SCIENCES'
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Journal articles on the topic "Research Subject Categories – CHEMICAL SCIENCES"
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Li, Ji, and Luo. "Phytoremediation of Heavy Metal Pollution: A Bibliometric and Scientometric Analysis from 1989 to 2018." International Journal of Environmental Research and Public Health 16, no. 23 (November 27, 2019): 4755. http://dx.doi.org/10.3390/ijerph16234755.
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This paper aims to evaluate the knowledge landscape of the phytoremediation of heavy metals (HMs) by constructing a series of scientific maps and exploring the research hotspots and trends of this field. This study presents a review of 6873 documents published about phytoremediation of HMs in the international context from the Web of Science Core Collection (WoSCC) (1989–2018). Two different processing software applications were used, CiteSpace and Bibliometrix. This research field is characterized by high interdisciplinarity and a rapid increase in the subject categories of engineering applications. The basic supporting categories mainly included “Environmental Sciences & Ecology”, “Plant Sciences”, and “Agriculture”. In addition, there has been a trend in recent years to focus on categories such as “Engineering, Multidisciplinary”, “Engineering, Chemical”, and “Green & Sustainable Science & Technology”. “Soil”, “hyperaccumulator”, “enrichment mechanism/process”, and “enhance technology” were found to be the main research hotspots. “Wastewater”, “field crops”, “genetically engineered microbes/plants”, and “agromining” may be the main research trends. Bibliometric and scientometric analysis are useful methods to qualitatively and quantitatively measure research hotspots and trends in phytoremediation of HM, and can be widely used to help new researchers to review the available research in a certain research field.
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Locatelli, Solange, and Agnaldo Arroio. "Some contributions of metavisualization in chemical education: A new field of research." Lumat: International Journal of Math, Science and Technology Education 3, no. 4 (September 30, 2015): 573–82. http://dx.doi.org/10.31129/lumat.v3i4.1025.
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Metavisualization is a fast-growing field in education, specifically in science, which involves the interpretation of external visualizations (images, for example) all the time, and is explained by models built by scientists. This review covers 17 articles published between 2008 and beginning of 2014, seeking to answer the question: “What has been presented in articles about metavisualization in teaching science?” Four categories were designed to classify the nature of the articles. Primary research targets were to look whether the article is of investigative or theoretical type, if the article involves some metavisual strategies or if it highlights its importance in the learning process. Major findings include: 1) the subject is still little explored; 2) most of the articles are the investigative type, and the data is collected with students; 3) just over half of papers involve a metavisual strategy or highlights the importance of metavisualization on the learning process. It is recommended that further studies are made on the subject, including the development of metavisual strategies that may help in the science learning process.
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Nogara, Pablo Andrei, Gabriela Luisa Schmitz, Nayara de Souza Costa, Jean Paul Kamdem, João Batista Rocha, and Claudia Sirlene Oliveira. "The evolution of Selenium and Mercury research from 1700 to 2017 based on bibliometric analysis." Research, Society and Development 9, no. 2 (January 1, 2020): e150922177. http://dx.doi.org/10.33448/rsd-v9i2.2177.
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Selenium and Mercury are two chemical elements studied in several fields of knowledge due to their chemical properties and interactions. The aim of this study was to analyze the evolution of research activity from 1700 to 2017 on the global trend of these elements, we carried out a bibliometric analysis using the Scopus database. For each keyword accessed (“selenium”, “selenide”, “selenite”, “selenate”, “organoselenium”, “mercury”, “inorganic mercury”, “mercury vapor” and “methylmercury”), we analyzed the publication output, and the top 5 geographic distribution of publications and contributing authors, as well as the top 5 Scopus subject categories where the documents are indexed. The results demonstrated an increase in the number of publication over time for all the keywords. Research about Selenium and its inorganic and organic chemical forms, and Mercury and its inorganic and organic chemical forms were described in approximately 117,000 and 164,000 documents, respectively. United States was the country with the highest number of published documents in all the keywords analyzed. Chemistry, Medicine and Environmental Science were the subject categories with the highest number of documents. Researchers from the United States, China, Japan, Slovenia, and Brazil were in the ranking of the most productive authors. To our knowledge, this is the first bibliometric study on Selenium and Mercury and can be useful to identify potential research groups for scientific collaborations.
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Nurwanti, Hifzani, Yusran Khery, and Baiq Asma Nufida. "Pengembangan Modul Ikatan Kimia dan Bentuk Molekul Berorientasi Nature of Science Untuk Menumbuhkan Literasi Sains Siswa." Hydrogen: Jurnal Kependidikan Kimia 6, no. 2 (January 23, 2019): 81. http://dx.doi.org/10.33394/hjkk.v6i2.1603.
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This development aims to determine the characteristics and feasibility of the oNature of Science (NOS) oriented module On the Chemical Bonds andMolecular Forms subject material through the 4D stage (Define, design,develop and disseminate). This research and development is carried out up tothe stage of development (development) with adjustments based ondevelopment needs. The module prototype was validated by 2 expertvalidator, 1 practitioner validator and 10 students as limited test respondents.Quantitative data were analyzed by percentage formulas and category.Qualitative data in the form of responses and suggestions are used asconsiderations for revisions. The results of expert validation showed anaverage percentage of 92.67% with very good categories of material experts,83.34% with very good categories from product design experts and 76% withgood categories from teacher practitioners. The average response of studentsto the modul prototype is 85.1% with a very good category. This shows thatthe module that developed is feasible to proceed to a large-scale trial phase.
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Kamaludin, Kamaludin (Mr )., and Abdurakhman Prasetyadi. "Two Decades of Bibliometric Research in Indonesia." LIGHT : Journal of Librarianship and Information Science 3, no. 1 (June 27, 2023): 32–43. http://dx.doi.org/10.20414/light.v3i1.7034.
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Bibliometric research in Indonesia is essential to do for exploring trends and understanding the knowledge base of bibliometric research from the perspective of globally indexed publications. Bibliometric studies have been applied mainly to scientific fields of activity, mostly based on metadata elements such as author, title, subject, citation, etc., related to scientific publications in a discipline. However, no study explicitly discusses the development of bibliometric research in Indonesia based on globally indexed publications. This study aims to identify 1) the growth of bibliometric research in Indonesia, 2) the performance of scientific agencies in publishing bibliometric research in Indonesia, and 3) the science mapping of bibliometric research in Indonesia. This study used data and graphical quantification methods to help researchers understand the future progress and trends of bibliometric research in Indonesia. The study results show that within two decades, there have been 167 relevant documents published and globally indexed in this field. The 167 documents were then analyzed and interpreted using bibliometric techniques: performance analysis and science mapping. The performance analysis results show that bibliometric publications in Indonesia continue to increase from one publication in 2001 to 85 documents in 2022. The most popular categories studied with bibliometrics are Environmental science and Engineering. The analysis results also show the productivity of each scientific actor, including writers, institutions, and countries. The conclusion showed four significant clusters in bibliometric research in Indonesia: the Chemical science cluster, Bibliometric analysis and literature review, food safety, and top Indonesian universities.
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Knapczyk, Adrian, Sławomir Francik, Marcin Jewiarz, Agnieszka Zawiślak, and Renata Francik. "Thermal Treatment of Biomass: A Bibliometric Analysis—The Torrefaction Case." Energies 14, no. 1 (December 30, 2020): 162. http://dx.doi.org/10.3390/en14010162.
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The aim of the paper was to summarize and discuss current research trends in biomass thermal treatment (torrefaction process). Quantitative analyses were carried out, in which the main countries, research units and scientists were indicated. The analysis showed a clear upward trend in number of publications after 2010. Most scientists on selected topics come from China, USA, Canada, South Korea, Republic of China, Poland (Web od Science—Core Collection (WoS-CC) and Scopus databases). Quantitative analysis also showed that the most relevant WoS-CC categories in the summary are: Energy Fuels, Engineering Chemical, Agricultural Engineering, Biotechnology Applied Microbiology and Thermodynamics and Scopus Subject area: Energy, Chemical Engineering, Environmental Science, Engineering and Chemistry. Thematic analysis included research topics, process parameters and raw materials used. Thematic groups were separated: torrefaction process (temp.: 150–400 °C), hydrothermal carbonization process (HTC) (temp: 120–500 °C), pyrolysis process (temp.: 200–650 °C) and gasification and co-combustion process (temp.: 350–1600 °C). In the years 2015–2019, current research topics were: new torrefaction technologies (e.g., HTC), improvement of the physico-mechanical, chemical and energetic properties of produced fuel as well as the use of torrefied biomass in the process of pyrolysis, gasification and co-combustion. The raw materials used in all types of biomass thermal treatment were: energy crops, wood from fast-growing and exotic trees, waste from the agri-food industry, sewage sludge and microalgae.
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Costa, Maurício Bruno da Silva, and Bruno Ferreira dos Santos. "The conceptual profile of equilibrium and its contributions to the teaching of chemical equilibrium." Chemistry Education Research and Practice 23, no. 1 (2022): 226–39. http://dx.doi.org/10.1039/d1rp00039j.
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The learning of scientific concepts is one of the main research subjects in science education. Although little used, the theory of conceptual profiles allows the study of this knowledge, taking into account the presence of different ways of thinking about a certain concept in the same individual. This study aimed to build a conceptual profile for the concept of equilibrium and, based on this profile, relate it to the teaching and learning process of chemical equilibrium. Four zones were proposed to comprise the profile, called intuitive, static, kinetic and energetic. Subsequently, we analyzed the responses obtained in a questionnaire by students of Chemistry courses in order to group similar ways of speaking into categories related to the concept of equilibrium and the proposed zones for the conceptual profile. In the answers, we found some alternative conceptions already identified by the literature. Based on the results, the proposed zones for the conceptual profile of equilibrium indicate that establishing associations between the state of chemical equilibrium and the notion of equality can lead to conceptual errors and, therefore, it is suggested to give priority to the notion of stability. We also propose the use of studies on the History and Philosophy of Sciences applied to the teaching of chemical equilibrium to stimulate the emergence, dialogue and enrichment between the zones of conceptual profile in individuals.
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Hecobian, A., Z. Liu, C. J. Hennigan, L. G. Huey, J. L. Jimenez, M. J. Cubison, S. Vay, et al. "Comparison of chemical characteristics of 495 biomass burning plumes intercepted by the NASA DC-8 aircraft during the ARCTAS/CARB-2008 field campaign." Atmospheric Chemistry and Physics 11, no. 24 (December 22, 2011): 13325–37. http://dx.doi.org/10.5194/acp-11-13325-2011.
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Abstract. This paper compares measurements of gaseous and particulate emissions from a wide range of biomass-burning plumes intercepted by the NASA DC-8 research aircraft during the three phases of the ARCTAS-2008 experiment: ARCTAS-A, based out of Fairbanks, Alaska, USA (3 April to 19 April 2008); ARCTAS-B based out of Cold Lake, Alberta, Canada (29 June to 13 July 2008); and ARCTAS-CARB, based out of Palmdale, California, USA (18 June to 24 June 2008). Approximately 500 smoke plumes from biomass burning emissions that varied in age from minutes to days were segregated by fire source region and urban emission influences. The normalized excess mixing ratios (NEMR) of gaseous (carbon dioxide, acetonitrile, hydrogen cyanide, toluene, benzene, methane, oxides of nitrogen and ozone) and fine aerosol particulate components (nitrate, sulfate, ammonium, chloride, organic aerosols and water soluble organic carbon) of these plumes were compared. A detailed statistical analysis of the different plume categories for different gaseous and aerosol species is presented in this paper. The comparison of NEMR values showed that CH4 concentrations were higher in air-masses that were influenced by urban emissions. Fresh biomass burning plumes mixed with urban emissions showed a higher degree of oxidative processing in comparison with fresh biomass burning only plumes. This was evident in higher concentrations of inorganic aerosol components such as sulfate, nitrate and ammonium, but not reflected in the organic components. Lower NOx NEMRs combined with high sulfate, nitrate and ammonium NEMRs in aerosols of plumes subject to long-range transport, when comparing all plume categories, provided evidence of advanced processing of these plumes.
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Pryimak, N. S., and O. A. Nikolaychuk. "HOTEL AND RESTAURANT BUSINESS MANAGEMENT: ESSENCE AND APPROACHES TO THE ORGANIZATION." TRADE AND MARKET OF UKRAINE, no. 1 (51) 2022 (2022): 44–50. http://dx.doi.org/10.33274/2079-4762-2022-51-1-44-50.
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Objective of the article is to study the essential characteristics of the hotel and restaurant business and outline modern approaches to the organization of management activities within it. Methods. This research used methods of generalization, comparison, description, synthesis, analysis, grouping, as well as systematic and logical approaches, the theory of flexibility, as well as conceptual approaches to understanding the philosophy of Agile management. Results. Based on the differences between the categories of "business" and "business", it was found that the essence of the hotel and restaurant business is manifested in the specifics of services and products provided and sold by entrepreneurs, specified categories "subjects" and "objects" restaurant business. It is determined that the specifics of this business are related to aggregate services and / or products - a pool of customer service activities in the provision of food and accommodation services, which begins long before the physical act of sale and ends by forming and maintaining a prolonged impression of visiting institution. Hotel and restaurant business management is a type of professional activity, the content of which is to influence the subject of management (management system) on the object of management (managed system) to achieve the goal taking into account competition conditions and the interests of key stakeholders. This activity involves the implementation of one of the alternatives of its implementation (situational, functional, marketing, regulatory, systemic, managerial, targeted, innovative, integrated or age-oriented approach), or their collaboration to best meet the conditions of doing business. The study substantiates the effectiveness of the age approach to hotel and restaurant business management, based on the concept of agile management, the content of which is to ensure maximum mobility, flexibility of the hotel and restaurant business management system, its focus on maximum adaptation of the management system to changes in environment and customer needs.
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Huertas-Valdivia, Irene, Anna Maria Ferrari, Davide Settembre-Blundo, and Fernando E. García-Muiña. "Social Life-Cycle Assessment: A Review by Bibliometric Analysis." Sustainability 12, no. 15 (August 1, 2020): 6211. http://dx.doi.org/10.3390/su12156211.
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This study examined the literature on social life-cycle assessment (S-LCA) published in the last 15 years (2003–2018) using bibliometric methods. Applying scientific mapping and analyzing publication performance, the study describes the structure of and trends in S-LCA publications in terms of related subject categories, authors, journals, countries, and highly cited articles. Challenges and research gaps in the S-LCA literature were also explored. The content of related papers published in the ISI Web of Science databases was examined to identify the main themes investigated, evolution of publication activity, and most representative elements. Analyses were conducted with SciMAT software. This tool enables researchers to map research specialties by extracting qualitative information in the specialized literature and representing it using quantitative measures. The results show rapid and exponential growth of the S-LCA research line in the past ten years, with a clear upward trend in related publications (mostly case studies), especially after publication of the UNEP/SETAC Guidelines for Social Life Cycle Assessment of Products in 2009: 66% of all articles published on S-LCA were published during the period 2015–2018, primarily by European authors. The findings also delineate S-LCA as a highly fragmented research field that has been applied to diverse sectors (agriculture, bioenergy, transport, water management, chemical products, electronics, etc.), mainly in non-European countries. Critical questions concerning methods, framework, paradigms, and indicators remain to be resolved. This study provides insight into the publication performance of S-LCA, characterizing its intellectual structure and salient authors and works. In identifying hotspots in the S-LCA research, the study provides a useful state-of-the-art reference guide for academics and reveals critical research gaps and potential research avenues for future studies to advance in consolidating the discipline.
Dissertations / Theses on the topic "Research Subject Categories – CHEMICAL SCIENCES"
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VILLANUEVA, MORAN MARTIN. "CAPITAL HUMANO Y CRECIMIENTO ECONOMICO EN EL ESTADO DE MEXICO: UN ANALISIS DEL PAPEL DE LA EDUCACION SUPERIOR, 1980-2014." Tesis de Licenciatura, UNIVERSIDAD AUTONOMA DEL ESTADO DE MEXICO, 2016. http://hdl.handle.net/20.500.11799/66971.
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El crecimiento económico es un elemento clave que para fines de este trabajo se aborda como punto de partida para comprender una de las problemáticas que afectan a México, principalmente en el aspecto que engloba la parte del capital humano generado por medio de la educación. A partir de la premisa de que la educación superior es un motor de crecimiento, se analiza el papel que desempeñan las instituciones de educación superior en la formación de los individuos para que puedan adquirir conocimientos y habilidades que les permitan interactuar en una economía de modo que propicien un ambiente que impulse el crecimiento sostenido de largo plazo del producto.
En el afán de encontrar y explicar las causas que influyen en el crecimiento de una economía, se ha establecido como uno de los objetivos el análisis de la educación superior como formadora del capital humano, en consecuencia se han revisado investigaciones en las cuales se han identificado las propuestas, las diversas teorías y los argumentos que integran elementos históricos o que reseñan que en particular este nivel educativo puede ser un pilar y un motor de crecimiento económico para una economía en vías de desarrollo.
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RODEA, GONZALEZ VELEZ ESTEFANIA. "LA LOGISTICA DEL TRANSPORTE AEREO DE MERCANCIAS EN MEXICO." Tesis de Licenciatura, UNIVERSIDAD AUTONOMA DEL ESTADO DE MEXICO, 2016. http://hdl.handle.net/20.500.11799/66973.
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En la actualidad el transporte aéreo ha evolucionado en gran magnitud dándole eficacia en su uso pero esto no hay llevado a la reducción de costos y su utilización para que las mercancías seas trasladas. Recordando que este medio de transporte fue desarrollado en la primera Guerra Mundial con fines militares, lo que llevo años más tarde a la existencia de aeronaves para el transporte de personas entre París y Londres, en estos aviones viajaban un máximo de cuatro personas.
Años más tarde se fueron evolucionando los aviones de tal forma que se llegó a aviones utilizados para el traslado de suministros entre países, como después a utilizar las aeronaves para el comercio entre regiones y/o países para la facilitación de entrega más rápida de las mercancías vendidas o compradas entre dos gobiernos, personas u organizaciones.
En el presente trabajo, se estudia y analiza la forma en que se puede aumentar el volumen de carga en diversos puntos tanto del país como en el mundo de manera área.
Se presenta un análisis sobre el traslado de mercancías de manera aérea, lo que lleva al estudio de las existencias de anomalías en la logística de este medio de transporte, llegando a la conclusión de que la logística es importante para la transportación en México, a través de la metodología se observa que existe un aumento anual de la cantidad mercancías movidas por esta vía pero a pesar de ello con mejoras podría haber un aumento en estos porcentajes que lleven a que en el futuro este transporte sea más utilizado para el traslado de mercancías tanto dentro del país como de México hacia al mundo.
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TOVAR, REYES YAZMIN GUADALUPE, and CARBAJAL YAHAIRA YURIRIA VAZQUEZ. "PROYECTO DE INVERSION PARA LA INSTALACION DE UNA PULQUERIA EN EL MUNICIPIO DE METEPEC, ESTADO DE MEXICO." Tesis de Licenciatura, UNIVERSIDAD AUTONOMA DEL ESTADO DE MEXICO, 2016. http://hdl.handle.net/20.500.11799/66974.
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En un entorno económico inestable como el que priva a nuestro país, dónde
factores como la disminución de empleo, bajo crecimiento económico, pérdida de
poder adquisitivo, etc.; hacen que se acentué más la necesidad de evaluar todo
proyecto que se desea emprender, ya que la intuición y el buen juicio no son
suficientes para garantizar el éxito de un proyecto. Por tanto, se vuelve
imprescindible el uso de técnicas de análisis para reducir el riesgo que conlleva
invertir en un entorno de incertidumbre.
Por eso, el objetivo principal de la presente investigación es evaluar la factibilidad
y rentabilidad de instalar un negocio dedicado a la comercialización de pulque en
el municipio de Metepec.
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FLORES, ALVAREZ ANDRY WILBERT. "DIAGNOSTICO SOCIOECONOMICO Y ESTRATEGIAS DE DESARROLLO DEL MUNICIPIO DE VALLE DE BRAVO, 2005-2012." Tesis de Licenciatura, UNIVERSIDAD AUTONOMA DEL ESTADO DE MEXICO, 2016. http://hdl.handle.net/20.500.11799/66975.
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El Estado de México está dividido en 125 municipios; el crecimiento y desarrollo de sus
municipios requiere de una planificación gubernamental eficaz y eficiente, capaz de
resolver problemáticas que acontecen a los territorios día con día en materia social,
económica, territorial, entre otros; lo anterior para lograr un mayor bienestar para sus
habitantes. (Manual para la elaboración del plan de desarrollo municipal 2013-2015,
2013).
Principalmente, existe un problema de planeación en cuanto a infraestructura,
equipamiento y servicios, por lo que es importante guiarse de un buen plan de
desarrollo y aplicarlo respecto a las necesidades que requiere el municipio de Valle de
Bravo, ya que, aunque se han publicado varios planes de desarrollo, no se le ha dado
seguimiento a largo plazo debido a diferentes factores, y al parecer, es lo que necesita
el municipio, continuidad en el proceso de desarrollo.
Valle de Bravo es un municipio que cuenta con 74 localidades. Para el año de 2010
contaba con una población total de 61,599 habitantes, de los cuales eran 30,296
hombres y 31,303 mujeres. Es clasificado como un municipio mixto, dado el tamaño de
sus localidades según el INAFED, el cual define como municipio mixto: la población se
distribuye sin que sus localidades concentren un porcentaje de población mayor o igual
al 50% del total de la población.
Los habitantes de Valle de Bravo prácticamente confían sus ingresos en su conocida
presa de agua, ya que el turismo es la principal fuente de ingresos para éste municipio.
Pero desde hace un tiempo, los mismos habitantes están preocupados por la presa de
agua, ya que al ser uno de los principales atractivos es también uno de los más
utilizados y congestionados; enriquece al desarrollo económico del municipio, pero si no
se comienza a realizar una acción de sustentabilidad a largo plazo, será un problema
en el futuro de los ingresos económicos para los vallesanos. Si la presa de agua sigue
contaminándose de la manera en que lo ha estado haciendo, Valle de Bravo perdería
su principal atractivo, por lo que esto representaría una externalidad negativa para sus
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habitantes, tanto económico como demográfico, debido a que la fuente de ingresos
desaparecería y se tendrían que buscar nuevas fuentes tal vez en municipios aledaños.
Para lo anterior, en el capítulo dos, se menciona una fuente de alternativa a los
ingresos en el municipio, se trata de la frambuesa roja que, dado el clima vallesano, es
apta para sembrarse, comercializarse y exportarse.
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NOVIA, RODRIGUEZ JOSE ABELARDO. "LOGISTICA DE IMPORTACION DE ALIMENTOS DONADOS DE ESTADOS UNIDOS, CASO DE ESTUDIO: BANCO DE ALIMENTOS DEL ESTADO DE MEXICO." Tesis de Licenciatura, UNIVERSIDAD AUTONOMA DEL ESTADO DE MEXICO, 2015. http://hdl.handle.net/20.500.11799/66976.
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El Banco de Alimentos del Estado de México por ser una institución de asistencia privada, participe en el mismo Estado , carece de la capacidad y en algunos casos de conocimientos necesarios, que le permitan dominar y tener una noción general de las obligaciones en materia fiscal y aduanal que existen en nuestro país para llevar a cabo importación de donativos en alimentos, toda vez que la incorrecta administración de las importaciones es acreedor a multas, pago de cuotas compensatorias y/o sanciones por el incumplimiento de las regulaciones o restricciones arancelarias, al no saber soportar el origen de las mercancías.
Para Marzo del 2015 el Banco de Alimentos recibe aproximadamente 400 toneladas mensuales de comestibles lo cual en la actualidad es insuficiente, puesto que se tienen más de 160,000 beneficiarios cada mes, teniendo la necesidad de aumentar la cantidad de alimentos recibidos en donación
Cabe señalar que el aumento de la pobreza en el Estado de México y a falta de empleos, ha hecho que el número de beneficiarios el cual atiende el Banco de Alimentos sigue elevándose.
Este proyecto está orientado a incrementar la participación del Banco de Alimentos del Estado de México en las donaciones que hacen asociaciones estadounidenses del ramo alimenticio como una alternativa emprendedora para satisfacer la demanda mexiquense que actualmente se tiene.
El objetivo es identificar y cuantificar el beneficio obtenido con la captación de alimentos donados por Estados Unidos; caso: arroz fortificado.
El proyecto analiza la importancia al presentar las bases para poder aplicar la logística de importación en las donaciones de alimentos provenientes de Estados Unidos.
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VILLEGAS, OSORIO JOSE MANUEL. "POLITICA MONETARIA Y CAMBIARIA EN MEXICO: EFECTOS EN LOS PRECIOS PARA EL PERIODO 2000A 2013." Tesis de Licenciatura, UNIVERSIDAD AUTONOMA DEL ESTADO DE MEXICO, 2016. http://hdl.handle.net/20.500.11799/66977.
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La política monetaria y la política cambiaria en México han representado uno de los
papeles más importantes al momento de tomar decisiones financieras por parte del
Banco de México. Por ello, es de suma importancia conocer la información brindada por
este organismo respecto a temas específicos de política monetaria y cambiaria, que
ayudan al aparato financiero a generar liquidez y mantener una sana estabilidad de
precios, además de fomentar el desarrollo económico del país e incentivar al crecimiento
económico por medio de inversiones nacionales y extranjeras.
En la actualidad un número importante de bancos centrales han llevado a cabo políticas
monetarias y cambiarias mediante la utilización de instrumentos de mercado que buscan
ejercer cierta influencia sobre las tasas de interés a corto plazo, con el objetivo de
alcanzar metas de inflación a través de afectar la demanda agregada, además cuentan
con un conjunto de instrumentos a su disposición para utilizar a la política monetaria como
ancla nominal de los precios.
El presente trabajo de investigación tiene por objetivo analizar los principales
mecanismos, en materia de política monetaria y cambiaria, que utiliza el banco central
para cumplir su mandato constitucional de velar por la estabilidad de precios en el periodo
de tiempo que va desde 2000 a 2013.
Este proceso se llevará de la siguiente manera. El mecanismo de transmisión de política
monetaria se lleva a cabo principalmente por medio de la tasa de interés de corto plazo
(tasa interbancaria a un día), la cual a través de diferentes canales de transmisión afecta
la demanda y oferta agregada. Para posteriormente influir en la inflación.
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SANCHEZ, VARGAS GERARDO. "CARACTERIZACION DEL DESEMPLEO JUVENIL EN DIEZ ENTIDADES FEDERATIVAS Y A NIVEL NACIONAL EN MEXICO, 2005-2014 II." Tesis de Licenciatura, UNIVERSIDAD AUTONOMA DEL ESTADO DE MEXICO, 2016. http://hdl.handle.net/20.500.11799/66979.
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El trabajo representa en el ser humano no solamente la manera en que obtiene un
ingreso monetario a cambio de producir algún bien o prestar algún servicio, es una
forma de autorrealización, de modo de vida e incluso, es la manera en la que el
individuo al generar riqueza por y para sí mismo alcanza cierto nivel de bienestar para
auto satisfacer sus necesidades. La línea de vida de las personas cruza por una etapa
crucial en la formación del ser humano, la juventud, donde se tiene fuerza, deseo y
capacidad para generar esa riqueza. El problema se presenta cuando una importante
cantidad de jóvenes se ve imposibilitada para trabajar, por circunstancias ajenas a ellos
mismos como lo son las fallas del mercado de trabajo. Y se hace referencia aquí a la
juventud no únicamente en razón de cuán determinante es para el desarrollo de las
personas, sino por la cantidad de jóvenes que hoy en día conforman la estructura
demográfica de países como México, así como por la magnitud en que les afecta el
desempleo: la tasa de desempleo al primer trimestre de 2015 para el agregado de la
economía fue de 4.23%, mientras que para los jóvenes fue de 8.44%, 4.21 puntos
porcentuales mayor. Es decir, la tasa de desempleo juvenil para dicho periodo
representó el 199.42% del desempleo total en México (INEGI, 2015).
El presente trabajo de tesis forma parte del proyecto de investigación intitulado:
“Desempleo juvenil por entidad federativa, 2005-2013”, que cuenta con registro ante la
Secretaría de Investigación y Estudios Avanzados de la Universidad Autónoma del
Estado de México (clave: 3799/2014/CID) la cual financió la citada investigación. Este
proyecto se encuentra en el marco de la línea de generación y aplicación del
conocimiento: “Economía, Mercado de Trabajo y Educación” del Cuerpo Académico:
“Desarrollo Económico, Social y Regional” de la Facultad de Economía de la misma
Institución.
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GARCIA, ALCANTARA JUAN ANTONIO. "“DESARROLLO SUSTENTABLE EN LOS ESTADOS DEL SUR-SURESTE DE LA REPÚBLICA MEXICANA AL AÑO 2010”." Tesis de Licenciatura, UNIVERSIDAD AUTONOMA DEL ESTADO DE MEXICO, 2015. http://hdl.handle.net/20.500.11799/67007.
Full textAbstract:
La región Sur-Sureste de la República Mexicana, integrada por los estados de Campeche, Chiapas, Oaxaca, Quintana Roo, Tabasco y Yucatán, muestra un serio rezago en su desarrollo socioeconómico con respecto a las regiones del Centro y Norte del país. Las condiciones de marginación y pobreza que prevalecen en dicha región son endémicas y se deben a un tejido histórico complejo de factores de muy diversa naturaleza, que incluye la aplicación en el pasado de políticas públicas que la han discriminado. Sus problemas económicos y sociales son estructurales y no producto de una situación de coyuntura. Dentro de la región existen pequeñas localidades en condiciones de aislamiento (sin caminos y fuera del círculo de influencia de alguna ciudad), cuya población vive en condiciones sumamente precarias. Dicho aislamiento contribuye al serio rezago social de las comunidades que habitan en ellas. En este contexto, el patrón de distribución territorial de la población en el desarrollo nacional y regional toma importancia. En la región sursureste particularmente, se presentan dos facetas de distribución geográfica de la población con un marcado contraste: por un lado, la concentración de la población en unas cuantas regiones y mega ciudades del país y, por el otro, la enorme dispersión de la población rural en miles de pequeñas localidades. Desafortunadamente, al hablar de atraso social y económico, en el caso de México, no puede limitarse a una sola zona, ya que es un país en vías de desarrollo y la desigualdad está presente en diferentes zonas, sectores y niveles. El crecimiento económico no beneficia a todos. Un ejemplo de la condición de pobreza en la que viven los grupos étnicos es que el 33% de la población indígena ocupada no tiene ingresos económicos fijos, por lo que la mayoría de ellos sobreviven con ingresos de menos de un salario mínimo. La polarización en la distribución del ingreso es evidente en la región. Las condiciones de precariedad y atraso, junto con el rezago en educación, vivienda, alimentación y salud, se convierten en serio obstáculo para el desarrollo pleno de la población indígena y, por ende, de la región. (Presidencia de la República, 2001).
El objetivo de es este trabajo es estudiar el índice de desarrollo sustentable para los estados del sur-sureste de México tratando de identificar los estados con bajos niveles de desarrollo sustentable. Se pretende dar a conocer la importancia de un desarrollo sustentable que integre a toda la sociedad y no sólo en beneficio de algunos sectores o
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regiones como hasta el momento se ha llevado a cabo, denotándose las grandes desigualdades en nuestro país.
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RANGEL, NAVA ABIGAIL GREET. "“PENSIÓN UNIVERSAL NO CONTRIBUTIVA PARA LA POBLACIÓN DE 65 AÑOS O MÁS EN EL ESTADO DE MÉXICO: 2010– 2030”." Tesis de Licenciatura, UNIVERSIDAD AUTONOMA DEL ESTADO DE MEXICO, 2016. http://hdl.handle.net/20.500.11799/67008.
Full textAbstract:
El envejecimiento poblacional es uno de los elementos que han caracterizado al siglo XXI, de acuerdo a datos publicados por el Banco Mundial (2016) para 2015 8.27 por ciento de la población total tenía 65 años de edad o más, cifra que para finales del año 1960 tan solo era de 4.99 por ciento. Por su parte, la Organización Mundial de la Salud (OMS, 2015), estima que para 2050 la proporción de adultos mayores alcance el 22 por ciento de la población total.
Ante los inminentes cambios demográficos en el mundo, es preciso reconocer que, el incremento del número de habitantes longevos conlleva repercusiones importantes en aspectos que comprenden temas sociales, culturales, económicos, entre otros. Dichos efectos deberán ser atendidos desde una concepción realista de las necesidades específicas de este grupo etario, el cual desafortunadamente se ha distinguido por mantener un fuerte vínculo a los diferentes tipos de riesgos (carencia de seguridad económica, limitado acceso a atención médica, reducción del mercado laboral).
En este contexto, resalta como una de las exigencias más urgentes la seguridad en el ingreso. Dicha seguridad se encuentra claramente afectada por la reducida cobertura de los sistemas de pensiones; en América Latina y el Caribe se estima que poco más de cuatro de cada diez adultos mayores disfruta de una pensión y para el año 2050 entre 47 y 60 por ciento no podrá acceder a una renta fija (Bosch, 2013), en el caso de México, esta cifra es igualmente baja, pues únicamente 23 por ciento de la población de 65 años o más goza de una pensión y, particularmente en el Estado de México cerca de 80 por ciento no cuenta con un ingreso mensual fijo derivado de una pensión (Villegas y Montoya, 2014).
Por lo anterior, la presente investigación tiene como principal objeto proponer una pensión universal no contributiva para los habitantes de 65 años o más del Estado de México y, calcular los costos derivados de su implementación. De este modo, se toman como punto de partida los fundamentos de las pensiones y su vigencia ante el
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acelerado envejecimiento poblacional, específicamente bajo las condiciones demográficas, económicas y sociales, que enfrenta la población de 65 años o más del Estado de México.
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LARA, NAVA DANIA GABRIELA. "“EFECTOS ASIMÉTRICOS DEL TIPO DE CAMBIO EN LA INFLACIÓN Y EL EMPLEO: UN ANÁLISIS REGIONAL PARA MÉXICO 2005-2015”." Tesis de Licenciatura, UNIVERSIDAD AUTONOMA DEL ESTADO DE MEXICO, 2016. http://hdl.handle.net/20.500.11799/67012.
Full textAbstract:
El capítulo 1 explicará la relación entre el tipo de cambio, inflación y
desempleo de acuerdo a la teoría económica, así como la función de una política
monetaria en el control de la inflación, la política cambiaria y su efecto sobre el tipo
de cambio, y la influencia de éstas sobre el desempleo. También se explica que
son las uniones monetarias y por qué existen, qué dice la teoría de áreas
monetarias óptimas y qué estudios similares existen para el caso de México.
El capítulo 2 caracteriza las variables a nivel nacional, pero dividida en 3 periodos,
el periodo antes de la crisis financiera que comprende de marzo 2005 a mayo
2008; el periodo de la crisis de junio 2008 a diciembre 2011 y finalmente en
periodo post-crisis enero de 2012 a septiembre de 2015. Dicha división se realizó
debido a las marcadas diferencias en las variables entre los 3 periodos. Entonces
se hace un análisis de la estructura productiva regional con el fin de explicar las
diferencias que presentan las variables entre regiones. El capítulo 3 estará
totalmente enfocado en el modelo, y para poder realizar dicho modelo se realizó
un análisis estadístico del tipo de cambio nacional, y el desempleo e inflación para
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cada región, se observó que todas tuvieran el mismo orden de integración. Se
hace un análisis de causalidad en sentido de Granger con la finalidad de observar
si las variables se explican entre sí, y si es así ver si la causalidad es
unidireccional o bidireccional.
Entonces se realizan 4 modelos VAR, para la región norte, centro-norte, centro y
sur respectivamente; y se comprueba que todos cumplen con los supuestos de
normalidad de los errores, de estabilidad, no autocorrelación y de
homocedasticidad. Se realiza un análisis impulso-respuesta en donde
encontramos que una depreciación del tipo de cambio nominal incide más
fuertemente en la inflación de la región centro-norte, y sur, mientras que en el
desempleo perjudica más a las regiones centro y norte. Esto no solo sirve como
prueba de la existencia de choques asimétricos, sino también como un preámbulo
para futuros estudios de efectividad regional de la política cambiaria en México.
Books on the topic "Research Subject Categories – CHEMICAL SCIENCES"
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Karlan, Dean, and Jacob Appel. Failing in the Field. Princeton University Press, 2018. http://dx.doi.org/10.23943/princeton/9780691183138.001.0001.
Full textAbstract:
All across the social sciences, from development economics to political science departments, researchers are going into the field to collect data and learn about the world. While much has been gained from the successes of randomized controlled trials, stories of failed projects often do not get told. This book delves into the common causes of failure in field research, so that researchers might avoid similar pitfalls in future work. Drawing on the experiences of top social scientists working in developing countries, the book investigates failed projects and helps guide practitioners as they embark on their research. From experimental design and implementation to analysis and partnership agreements, the book shows that there are important lessons to be learned from failures at every stage. The book describes five common categories of failures, reviews six case studies in detail, and concludes with some reflections on best (and worst) practices for designing and running field projects, with an emphasis on randomized controlled trials. There is much to be gained from investigating what has previously not worked, from misunderstandings by staff to errors in data collection. Cracking open the taboo subject of the stumbles that can take place in the implementation of research studies, this is a valuable ‘how-not-to’ handbook for conducting fieldwork and running randomized controlled trials in development settings.
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Jørgensen, Knud Erik. What is International Relations? Policy Press, 2021. http://dx.doi.org/10.1332/policypress/9781529210965.001.0001.
Full textAbstract:
This book demonstrates that the global community of International Relations scholars during the last 100 years have managed to create a mature and accomplished discipline. The book argues that it should be recognised as such. Seven key concepts structure the book, each concept enabling a critical examination of an important dimension of the discipline that goes beyond conventional categories and delimitations. The essay argues that rather than continue to be stuck in more of the same, it is time to move on and, in this regard, the book offers some tentative suggestions about the way forward. Concerning the discipline’s subject matter the argument is that further debates about widening vs. narrowing are unlikely to generate advances. Instead, we should focus on the guiding research questions and the tentative answer they generate. Likewise, instead of defining the discipline as a social science (for better or worse), we should acknowledge the facts that suggest the discipline has always been straddling the social sciences and the humanities and thus been a human science. The book pays serious attention to variations, not least in terms of the functions theories have across time (history) and space. It also aims at escaping the Zeitgeistian conception of diversity. Instead of regarding the discipline as an abstract discursive structure, we should acknowledge that is was created and reproduced by a community of scholars, increasingly within professional institutions. Finally, rather than go for a bland, unspecified ‘global’ or ‘international’ discipline, we should examine fruitful interactions between ‘local’ and ‘global’.
Book chapters on the topic "Research Subject Categories – CHEMICAL SCIENCES"
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Nyika, Joan Mwihaki. "Nanotechnology and Its Applications in Environmental Remediation." In Research Anthology on Emerging Techniques in Environmental Remediation, 71–90. IGI Global, 2022. http://dx.doi.org/10.4018/978-1-6684-3714-8.ch004.
Full textAbstract:
Decontamination of pollutants from soil, air, and water is a challenging quest in contemporary society due to the recalcitrant, bioaccumulative, and bio-resistant nature of such contaminants. Remediation processes of these environmental contaminants relies on a number of processes including adsorption, photocatalysis, redox transformations, and filtration among other chemical reactions. The use of nanotechnology to enhance the performance of remediation processes has developed research interest in modern day due to the high reactivity and environmental friendliness associated with nanoparticles. This chapter explores the science behind the application of nanotechnology in environmental remediation, the processes used in decontaminating environmental media, and the various categories of nanomaterials. Various examples based on literature are used to enhance insight on the subject.
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Nyika, Joan Mwihaki. "Nanotechnology and Its Applications in Environmental Remediation." In Applications of Nanomaterials in Agriculture, Food Science, and Medicine, 29–48. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-5563-7.ch002.
Full textAbstract:
Decontamination of pollutants from soil, air, and water is a challenging quest in contemporary society due to the recalcitrant, bioaccumulative, and bio-resistant nature of such contaminants. Remediation processes of these environmental contaminants relies on a number of processes including adsorption, photocatalysis, redox transformations, and filtration among other chemical reactions. The use of nanotechnology to enhance the performance of remediation processes has developed research interest in modern day due to the high reactivity and environmental friendliness associated with nanoparticles. This chapter explores the science behind the application of nanotechnology in environmental remediation, the processes used in decontaminating environmental media, and the various categories of nanomaterials. Various examples based on literature are used to enhance insight on the subject.
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Pronina, Tatyana A., and Elena Yu Dmitrieva. "Developing the system of interrelated classifications: Comparing State Rubricator of Sci-tech Information to Web of Sciences domain classifiers." In Research in Llibrary theory and practice: Annual interdepartmental collection of scientific papers, 124–42. Russian National Public Library for Science and Technology, 2022. http://dx.doi.org/10.33186/978-5-85638-241-8-2022-124-142.
Full textAbstract:
Building the single network of subject matches of the most popular classification systems is essential for information support of scientific research. The comparative analysis of the State Rubricator of Sci-tech Information (GRNTI) subject headings and Web of Sciences (WoS) Research Areas and Web of Science Categories was accomplished. The lists of subject research areas and categories are the most detailed and popular classifiers used by Clarivate for systematization. For today, GRNTI sections in social, natural sciences and STEM are analyzed and compared to WoS classifiers. Logical nesting and extension overlappitng represent the semantic links between classification headings.
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Kuzmanović, Vladan. "Fluvial Dynamics, Hypocycloids, and Hydro-Dynamic Cycles." In Handbook of Research on Water Sciences and Society, 736–50. IGI Global, 2022. http://dx.doi.org/10.4018/978-1-7998-7356-3.ch035.
Full textAbstract:
Complex hydrological models find adequate formalization in co-nodal systems, given the abundance, multiplication, dynamics, relations of elements (hubs and nodes) and systems (basins and rivers), as well as chronologies. Hydrological models function on the principle of nodes and orientations. Hypo-cycloids (in the text: h-Cycloids) are time-spatial categories; the subject of hydrodynamic nonlinear analysis, they do not exist entirely realistically as recent flows, but are present only partially, phased, as partial flows. Hypo-cycloids are formed by summing cycles with a combination of overlapping and alternating flows. Cycles are time-spatial categories of co-nodal reconstruction. Fluvial dynamics is logically composed of nodal sets, hub systems, and junctions that are polyvalues (polyvalent, multi-oriented, cyclic) of a diverse model rather than a single-oriented output of just a simple physical model. The chapter examines four of the world's largest interfluviums: Parana-Paraguay, Euphrates-Tigris, Mississippi-Ohio, Danube-Tisza.
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Atikcan, Ece Özlem, Jean-Frédéric Morin, and Christian Olsson. "Introduction. An Introduction to Research Methods in the Social Sciences." In Research Methods in the Social Sciences: An A-Z of key concepts, 1–8. Oxford University Press, 2021. http://dx.doi.org/10.1093/hepl/9780198850298.003.0072.
Full textAbstract:
Introducing research methods in the social sciences is not an easy task given how complex the subject matter is. Social sciences, like all sciences, can be divided into categories (disciplines). Disciplines are frequently defined according to what they study (their empirical object) and how they study it (their particular problematization of the object). They are, however, by no means unitary entities. Within each discipline, multiple theories typically contend over the ability to tell provisional truths about the world. They do so by building on specific visions of the nature of the world, reflections on how to generate scientific truth, systematic ways of collecting and analyzing data (methods) and of justifying these methods as part of a coherent research design (methodologies).
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Norris, Donald, and Benjamin A. Lloyd. "The Scholarly Literature on E-Government." In E-Government Research, 21–41. IGI Global, 2008. http://dx.doi.org/10.4018/978-1-59904-913-7.ch002.
Full textAbstract:
The authors conducted a comprehensive review of articles on the subject of e-government that were published in refereed scholarly journals through the end of 2004 to serve as a baseline for future analysis of this emerging field. They found over 100 e-government articles, but only 57 with empirical content. The authors then examined the articles using 12 analytical categories. They conclude that the scholarship about e-government comes primarily from the United States, and from authors trained in the social sciences. Few e-government articles adequately used the literatures that were available (e.g., IT and government, e-government, or any specialized literatures), and few created or tested theory or hypotheses. Articles employed both qualitative and quantitative methodologies, but many contained conclusions that were not supported by their data or analyses. The authors conclude that e-government research is a young and growing field that has yet to achieve adequate scholarly rigor.
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Budea, Alexandra María Sandulescu. "An Approximation in the Study of Communication Research." In Advances in Educational Marketing, Administration, and Leadership, 284–300. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-4930-8.ch016.
Full textAbstract:
The general objective of this research is to carry out a theoretical-methodological assessment of the digital environment as an object of study in the field of communication sciences in Spain, through the analysis of articles included in specialized journals in this area. By means of the bibliometric analysis, we assess the texts published in specialized journals in this field and, among the important variables, the authors take into account the theoretical features of discourse related to this subject matter, the framework for scientific disciplines, and research categories or concepts. The methodological designs will be mentioned as regards those that evidence scientific discourse, areas of analysis, privileged research techniques, and which in specific have been used the most, as well as the predominant forms of triangulation. This new study will complete a decade of analysis of research productivity in communication at Spanish universities, which began with research projects based on communicative intra-history such as MAPCOM by designing a map of the research system on communication practices.
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Chandrasekaran, M. "Research Impact of the Scholarly Literature on Google Scholar." In Information Literacy Skills and the Role of Social Media in Disseminating Scholarly Information in the 21st Century, 78–88. IGI Global, 2023. http://dx.doi.org/10.4018/978-1-6684-8805-8.ch007.
Full textAbstract:
The study analyses the research impact of scholarly literature on Google scholar; a Scientometric study during 2002 -2022. A total number of 25760 records were retrieved from Web of Science database for the period of study. Out of 25760, the highest 5017(19.47%) of the publications have been witnessed in the year 2021. Following is 4903, then 3835 contributed in the field of Google Scholar during 2022 and 2020 respectively. The top ranking of authors is found to be a Maffulli N with 113 (0.4%) of the publications on Google Scholar. The review articles hold the maximum of publications with 19132 (74.27%). Pharmacology pharmacy was top ranked in subject categories among the listed subjects and holds 2590 (10.05%) of the publications. Tehran University of Medical Sciences is among the most prolific institutions in the listed twenty-five of them. The institute holds 706(2.74%) of the publications in Google Scholar during period of study.
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Ngulube, Patrick, and Omwoyo Bosire Onyancha. "Conceptualizing the Knowledge of Traditional and Indigenous Communities Using Informetrics Approaches." In Handbook of Research on Theoretical Perspectives on Indigenous Knowledge Systems in Developing Countries, 198–224. IGI Global, 2017. http://dx.doi.org/10.4018/978-1-5225-0833-5.ch009.
Full textAbstract:
Interest in indigenous knowledge is growing because of its potential to promote and sustain development activities. Inspite of the recognition of the significance of indigenous knowledge there is limited agreement on its definition and conceptualization. There are competing ways of defining it and various ways of labeling it. In view of the varying appropriation of meanings to the concept of the knowledge of traditional and indigenous communities, this chapter starts by dealing with definitions attached to the knowledge of traditional and indigenous communities before turning to establishing what might be the suitable label for that knowledge using informetrics techniques. An investigation of 17 labels used to refer to the knowledge of traditional and indigenous communities that were conveniently chosen from the extant literature revealed that indigenous knowledge is the label that is gaining more currency than any other in the arts, humanities, and social sciences subject categories.
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Koreshkova, Yulia. "ON THE INTELLECTUAL CONTEXT OF CHARLES SANDERS PEIRCE’S CONCEPT OF SYNECHISM." In METOD, 461–77. INION RAN, 2020. http://dx.doi.org/10.31249/metod/2020.10.22.
Full textAbstract:
This article discusses the main aspects, concepts and categories of Charles Peirce's philosophy in the context of synechism in order to provide an intellectual context to the article «Immortality in the light of synechism». The text is divided into parts devoted to Peirce's biography, synechism and faneroscopy, tihism, abduction and agapism, as well as to how Peirce's conceptual apparatus is currently used in the academic discourse. The article aims to familiarize the reader with the basic concepts of Peirce's philosophical project and to provide an intellectual context for his concept of synechism. The article presents the main biographical facts that can give the most accurate idea of Peirce’s personality, his academic career and of difficulties, associated with the study of his legacy. There are examples of how Peirce's conceptual apparatus is embedded in modern philosophical and methodological discourses. Pierce's synechism and his entire philosophical project show how a rigorous logic and scientific methodology exist in close interconnection with general philosophical problems and methodology. Peirce's scientific discoveries are inseparable from his ontological research. His synechysitic project is inherently such a conceptual apparatus that is designed to overcome the methodological limitations associated with discontinuity and mechanistic approach towards the world: synechism provides a view that would include subject-object relations in scientific knowledge, and would also include the problem of the dependence of the object on the subject not only in philosophy and humanitarian knowledge, but also in social and exact sciences, that is, in those areas where the rigor of the scientific method is welcomed. At the same time, in the context of the Cartesian project revision Peirce's synechism can be considered as a solution to the problem of the interaction of extending matter and non-extending mind. Synechism offers a synthesis between extending matter and mind, since synechism offers the extension and connectedness of both mind and matter. Thus, indirectly, not the abolition of dualism occurs, but a logical transformation that overcomes the opposition. On the other hand, in relation to the problem of mind-body separateness, synechism is a concept that is designed to cancel it, since synechism considers the continuity of everything as its foundation.
Conference papers on the topic "Research Subject Categories – CHEMICAL SCIENCES"
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Jeber, Jalal N., Maher Ahmed Abed, and Ausama Abbas Faisal. "On-site detection of saliva-alcohol as a function of blood alcohol concentration using colorimetric biosensor based on deposited Chromium (VII) Oxide Nanoparticles on filter paper." In The 8th International Conference of Biotechnology, Environment and Engineering Sciences. SRO media, 2020. http://dx.doi.org/10.46617/icbe8003.
Full textAbstract:
Alcohol intoxication is usually associated with drowning, falls, overdoses, fires, occupational accidents, physical and sexual abusements, domestic violence and traffic accidents. Therefore, alcohol considered an important factor for the explanation of the occurrence of many types of injuries. For many purposes such as forensic, it is important to establish a detection method to ensure whether the subject or the patient have consumed alcohol at a level that would be the reason for the accidents or injuries occur. Therefore, in this work, a simple, rapid and low-cost method was developed and validated for the detection of the alcohol in saliva as a function of blood alcohol concentration (BAC). The method is based on fabricated a biosensor consisted of chromium oxide nanoparticles deposited on filter paper. The validation of the biosensor was tested on 50 participants which categories into two selected groups (1 and 2). Group 1 consisted of 20 subjects from an organized party (no alcohol), they usually consumed three to four drinks as an average per week while Group 2 consisted of 30 subjects from an organized party the local bar (alcohol group), usually consumed two to three drinks per day. The results of the present study have shown that 95% of group 1 demonstrated positive results with variable colour intensities of the BAC in comparison to the 80% only of subjects from group 2. The present study has approved that the fabricated biosensor can effectively detect 0.02% or more of BAC which can be a useful test for many purposes such as medical, forensic, research and workplace.
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Đorić, Biljana. "REPRESENTATION OF LEARNING THEORIES IN THE DESIGN OF ELECTRONIC COURSES IN THE CONTEXT OF HIGHER EDUCATION." In SCIENCE AND TEACHING IN EDUCATIONAL CONTEXT. FACULTY OF EDUCATION IN UŽICE, UNIVERSITY OF KRAGUJEVAC, 2020. http://dx.doi.org/10.46793/stec20.147dj.
Full textAbstract:
E-learning is based on numerous psychological and pedagogical theories of learning, which is why their implementation in the context of instructional design can greatly affect the organization and content of e-courses. Diversity in the contents of certain teaching areas requires different approaches in shaping the learning environment. Therefore, the aim of this pilot study is to examine the representation of learning theories in e-course design in the context of higher education. For the needs of the research, an instrument was created which was piloted on a sample of 20 teachers and associates of the Faculty of Technical Sciences in Čačak, University of Kragujevac. The questionnaire covers the following learning theories: behavioral theories, individual and social constructivism, cognitivism and enactivism. The results of this research indicate that teachers and associates give statistically different estimates of the representation of individual learning theories in their e-courses, although these differences do not exist between all compared categories. The principles of individual constructivism are most represented, and social constructivism and enactivism are the least represented. Based on the obtained results, the paper presents pedagogical and research implications for a more detailed examination and understanding of the subject of research.
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Luca, Catalina, Madalina Postaru, Madalina Datcu, and Doru Andritoi. "THE USE OF THERMOGRAPHY AS AN EDUCATIONAL TOOL IN THE STUDY OF CHEMICAL REACTIONS WITH HEAT TRANSFER." In eLSE 2019. Carol I National Defence University Publishing House, 2019. http://dx.doi.org/10.12753/2066-026x-19-181.
Full textAbstract:
Over time, it has been proven that practical demonstrations are very useful for understanding the course-based teaching style. Thermography can be very useful as a research tool by students to accurately measure the temperature differences of the various elements studied. The objective of this paper is to present the thermography as a useful technique for supporting the teaching process at the Medical Biotechnology classes at the Faculty of Medical Bioengineering, UMF Ia?i. The aim is to help students learn and understand the phenomena involved in heat transfer modes in a quick and intuitive way using the thermographic camera. The set of practical exercises presented in this paper was designed to allow students to observe the thermal effects of chemical reactions that are accompanied by temperature changes, either exothermic or endothermic reactions, which makes clear to understand thermochemistry which is the subject study of thermal effects associated with chemical reactions, applying the principle of thermodynamics. Thermography allows us to revolutionize this approach by facilitating the implementation of simple experiments. Infra-Red Thermography has become popular in different fields, such as engineering, textile industry, sports, and medical sciences. Moreover, it allows the determination of surface temperature, including skin temperature.A thermal imaging camera can be a very useful tool in the hands of today's science educator. Incorporating thermal imaging into science lectures and laboratory sessions greatly enhances the classroom experience by providing visual evidence of a scientific phenomenon.Classical methods typically limit the observation space around the demonstrator and can lead to students 'turning off' if not sufficiently
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Pinar-Pérez, Jesús María, María Fernandez-Moya, Pedro Cuadros-Solas, Carlos Salvador, and Roberto Morales-Arsenal. "A New Methodology to Construct a Database of World University Exams." In INNODOCT 2020. Valencia: Editorial Universitat Politècnica de València, 2020. http://dx.doi.org/10.4995/inn2020.2020.11822.
Full textAbstract:
Since the final decades of the 20th century, university education has witnessed rapid growth. However, the quality of the education has varied a lot within the different programs around the world. How can we measure quality in university education? A number of institutions release annual global rankings of universities according to academic fields. One of the most respected lists, the Shanghai Academic Ranking of World Universities, uses a complex methodology to rank world universities, including six objective indicators, i.e. the number of alumni and staff winning Nobel Prizes and Fields Medals, the number of articles published in prestigious journals, the number of Highly Cited Researchers and the number of articles indexed in Science Citation Index - Expanded and Social Sciences Citation Index produced by Web of Science Group, and per capita performance. An overview of the annual list reveals the distance between universities, and offers a picture of global university education as a highly atomized system. How can we improve the homogenization of university education around the world? This is the central question of our research. In order to answer it, we focus on the classic tool used to evaluate students: exams. The aim of our paper is to establish a methodology with which to construct a database of world university exams by academic field. The database would be available to professors and students worldwide, and both categories could use it to contrast their level in a certain subject. In this sense, our proposal aims to achieve two objectives: 1) to maximize the effectiveness of exams as a measurement of students´ knowledge; 2) to use exams as a tool to homogenize education within universities in a certain academic field.
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Rezaeifar, Ayat, Mojtaba Mesgari, and Bahar Mehmani. "Activities in Iran for Standardization of Nanotechnology." In ASME 4th Integrated Nanosystems Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/nano2005-87025.
Full textAbstract:
The importance of nanotechnology standardization is to reach the main topic in developing standards, which is “uniformity in manufacturing and facilitating the commercialization of nano-products.” According to this goal, activities on standardization in nanotechnology have been started in Iran, where development of nanotechnology is assigned to National Nanotechnology Committee of Iran. This committee is working under direct supervision of presidency office. As written in the committee’s official website [http://www.nano.ir], one of the long term goals of this movement, according to the “fourth development program of Iran” is to reach appropriate share of world trade based on nanotechnology. For this purpose standard developing and quality management system is needed for facilitating industrial and technological cooperation and decreasing costs raised from quality unawareness. So our workgroup has selected nanotechnology standardization as one of its research topics. We have studied current state of different active countries in this field and find out that one can categorize these activities into two major groups, General and Specific. The general activities refer to those looking from the regulatory and nomenclature point of view. In the other side specific activities have done according to local contracts signed between manufacturers, organizations and business start-ups. As examples of the activities started in Iran we can mention: 1. Establishing National Laboratory Network for Nanotechnology by National Nanotechnology Committee of Iran. 2. Collaboration of the Institute of Standards and Industrial Research of Iran (ISIRI) with, International Standard Organization (ISO) for starting the new Nanotechnology TC (technical committee). Today, Iran is one of the 23 active members of ISO TC 229 on Nanotechnologies. 3. Academic research on standardization of measurement procedures used for nano-scale materials. We have gathered or proposed in our research some opportunities specifically for Iran, which may also be helpful for other developing countries to enhance their market position in the upcoming era of nanotechnology. These proposals can be listed as below: 1. Establishing a national committee for managing and regulating of nanotechnology standards; 2. Starting nanotechnology technical committee in Iranian Standard and Industrial Research Organization; 3. Actively collaborating with other countries and international standard institutes, insisting on the country’s core competencies; 4. Introducing Iran’s specific needs to international standard institutes; 5. Equipping national laboratories; 6. Collaborating with international laboratory networks; 7. Developing specific standards based on casual contracts; 8. Activation of researchers to focus on measurement procedures and methods; 9. Participation in regional seminars and workshops and initiation of such activities. With paying attention to these activities, we can find the opportunity of holding a highly referenced database and information center for nanotechnology related commerce. To organize the “nanotechnology technical committee” inside the ISIRI [http://www.isiri.org/], which is responsible for all standardization activities in Iran, we decided to follow the common inter organizational disciplines of this institute, but we suggested assigning 2 or 3 members of this committee, despite others, as full time members. These members would track international standardization activities, and would be the administrators of such activities within Iran. Actively collaboration with other countries and international standard institutes, insisting on the country’s core competencies, would have lots of benefits for country. Taking into consideration that, there is no comprehensive and global accepted nano-standard in the world, through these efforts we can introduce our main interested topics of standardization to international standard institutes (e.g. during our correspondences with Dr. Hatto from UK committee for standardization in Nanotechnologies, we received an offer to notice them our priorities in Nano-standards). To do so, ISIRI has announced his full support of new ISO TC on Nanostandards. To be able to play an appropriate role in this field, having laboratories with advanced equipments is something essential. Because of the reason that these facilities are costly, we decided to take the advantages of National Laboratory Network for Nanotechnology. The laboratories within this network can support nanostandardization process through measurement at nano scale, identifying characterization of nano structures and materials, and their physical and chemical properties (for more information about this network you can visit the following website http://nanolab.nano.ir). Having a well-known and advanced national laboratory network, Iran can provide services to other countries too, and also can become a member of international laboratory networks to develop it activities. The other activity that Iran is interested in is to take part in joint works with international standard making organizations to develop specific standards (e.g. characterization of nanoparticles in ceramics industry). After developing such standards they could be certified through authority standard making organization. Universities also can play an active role in nanotechnology standardization from different aspects. For instance they can do surveys to study priorities of country in this field, and also can study on measurement at nanoscale, characterization of nanomaterilas, test method subjects and etc. Also, some activities in this field have been done in some first rated universities in the country. Participating in regional seminars and making good connections between scientists who are working at this task is another way to have a good background about nano standardization and developing special standards in nano technology. Scientists can co-work in regional universities and laboratories and they can present their research results in such kind of seminars. The goal of such program is making a new task in science and a good relationship between researchers who are working at laboratories on nano standardization and governments. Developing specific standards based on casual contracts makes our universities, laboratories and industries strong for developing standards for special cases. Being strong in such contracts give our industries and universities a powerful goal for developing standards in special cases. Equipping national laboratories and Collaborating with international laboratory networks gives our industries and universities a wide range of abilities for making precision measurements and being in touch with other institutes. The researchers and engineers can use the results of each laboratory for their researches and measurements. In this way the special contracts can be stronger and appearance of Iran in seminars, workshops and commercial relations will be more effective. One of the most important decisions can be finding a proper industry in Iran which can compete in world trade. For this kind of industry using nano materials as the primary materials or in other steps of process and developing standards will be very helpful. This kind of researches will helpful for developing a long range policy for nanotechnology in Iran.