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Journal articles on the topic 'Ecotox model'

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Published: 1 April 2023

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1

Netto, I., V. Bostan, L. McCarthy, A. Laursen, K. Gilbride, M. Mehrvar, and R. Pushchak. "Automated image analysis of Euglena gracilis Klebs (Euglenophyta) for measuring sublethal effects of three model contaminants." Water Science and Technology 66, no. 8 (October 1, 2012): 1708–15. http://dx.doi.org/10.2166/wst.2012.387.

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The short-term impacts of atrazine (herbicide), tributyltin (organometal) and copper on the behaviour of Euglena gracilis Klebs (Euglenophyta) were assessed. First, the ECOTOX automated image analysis system was used, which measured swimming velocity, cell shape, percentage of cells swimming upwards, and randomness of swimming. Next, visual observation by microscopy was used to measure percentage of cell motility and cell shape. Behavioural changes can be used as an indicator of stress in less than 24 h, potentially making them suitable for inclusion in early-warning systems for water quality. Findings indicate that E. gracilis is a very sensitive organism to copper, showing inhibition of motility with visual observation at 0.8 μmol/L within 1 h. The image analysis system was in general less sensitive than visual observation for detecting behavioural changes after incubation in copper. In contrast, after exposure to organic contaminants atrazine and tributyltin, the ECOTOX system detected small changes in the number of cells swimming upwards (antigravitactic behaviour) at higher concentrations.
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2

Liu, Y., H. S. Pedersen, L. Foldager, H. Callesen, and M. T. Sørensen. "96 IN VITRO FERTILIZATION IN MOUSE AS A REPROTOXICITY MODEL FOR XENOBIOTICS." Reproduction, Fertility and Development 29, no. 1 (2017): 155. http://dx.doi.org/10.1071/rdv29n1ab96.

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To assess reprotoxicity of pesticides and other xenobiotics, rodents are often used with natural mating and litter size as end-points. However, because a male mouse can produce normal-size litters even with >50% reduced sperm count (Ecotox. Env. Saf. 73, 1092), this model could approve some chemical substances despite their reprotoxic effect. Thus, we aimed to establish a mouse IVF system to evaluate reprotoxicity of xenobiotics, illustrated by 2 pesticides [vinclozolin (vin), chlormequat (ccc)]. Experimental mice were given 2 pesticide doses by mixing into the feed: low (L) or high (H), equivalent to no or lowest observed adverse effect level, respectively (Env. Health Perspect. 117, 1272). To produce experimental males, mated NMRI females were fed low dose (vinL, cccL), high dose (vinH, cccH), or no pesticide from 1-cell stage through birth and until weaning, from where experimental males continued pesticide feeding. Each experimental male at 8 to 10 weeks old was naturally mated with 2 females having normal feed for 5 days, then continued with pesticide or control feed for at least 35 days before use for IVF. Naturally mated females had normal feed until birth to evaluate litter size. For IVF, oocytes were collected after superovulation of 3- to 4-week-old C57BL/6J females (2–5/male). Based on our previous experiment (Anim. Reprod. 13, in press), 25,000 sperm/mL was within the responsive range and selected for IVF (Theriog. 65, 1716). The IVF embryos were in vitro cultured for 4 days. Pronuclei were evaluated 9 h after IVF start (Day 0), and 2-cell/blastocyst were evaluated on Day 1/4. Mean litter size was estimated by normal linear mixed-effects model, and mean pronuclei, 2-cell, and blastocyst rates were estimated by binomial generalized linear mixed-effects models with identity link function, included a male-subject random intercept accounting for correlation between multiple fertilizations by same male, and a factor defining groups as fixed effect. Preliminary results (Table 1) are based on current data from half of our full experiment. No signs of different litter sizes after natural mating were observed between pesticide groups and control. Compared with control, rates of pronuclei, 2-cell, and blastocyst tended to decrease in vinH and increase in vinL group. No clear differences between cccL, cccH, and control groups were found. These results could indicate a pesticide effect (vinH) on mouse male reproductive system that can be detected in an IVF system but not by natural mating. Our data show a large variation in IVF results between individual males and females, so our full dataset is required before conclusions are made. Table 1. Preliminary results
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3

Johnson, I. R., D. F. Chapman, V. O. Snow, R. J. Eckard, A. J. Parsons, M. G. Lambert, and B. R. Cullen. "DairyMod and EcoMod: biophysical pasture-simulation models for Australia and New Zealand." Australian Journal of Experimental Agriculture 48, no. 5 (2008): 621. http://dx.doi.org/10.1071/ea07133.

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DairyMod and EcoMod, which are biophysical pasture-simulation models for Australian and New Zealand grazing systems, are described. Each model has a common underlying biophysical structure, with the main differences being in their available management options. The third model in this group is the SGS Pasture Model, which has been previously described, and these models are referred to collectively as ‘the model’. The model includes modules for pasture growth and utilisation by grazing animals, water and nutrient dynamics, animal physiology and production and a range of options for pasture management, irrigation and fertiliser application. Up to 100 independent paddocks can be defined to represent spatial variation within a notional farm. Paddocks can have different soil types, nutrient status, pasture species, fertiliser and irrigation management, but are subject to the same weather. Management options include commonly used rotational grazing management strategies and continuous grazing with fixed or variable stock numbers. A cutting regime simulates calculation of seasonal pasture growth rates. The focus of the present paper is on recent developments to the management routines and nutrient dynamics, including organic matter, inorganic nutrients, leaching and gaseous nitrogen losses, and greenhouse gases. Some model applications are presented and the role of the model in research projects is discussed.
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4

da Costa Cantos Jerônimo, Gabriel, Luiz Felipe Ramos Turci, Paulo Augusto Zaitune Pamplin, and Patrícia Neves Mendes. "Modelagem otimizada de indicadores biológicos de qualidade da água." Revista DAE 221, no. 68 (December 10, 2019): 131–41. http://dx.doi.org/10.36659/dae.2020.011.

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Resumo 27/06/2018 DOI: https://doi.org/10.36659 /dae.2020.011 Turci, L. F. R Pamplin, P. A. Z https://orcid.org/0000-0001-7516-0963 https://orcid.org/0000-0001-7318-9121 O estudo de plantas aquáticas (macrófitas) é importante, uma vez que essas plantas apresentam potencial de utilização em estudos de ecotoxicologia, como bioindicadores no tratamento de águas residuárias. A mode- lagem criteriosa do crescimento dessas plantas, especificamente a Lemna minor, é útil na determinação das condições de otimização dessas aplicações; assim, deseja-se sempre obter o modelo que melhor represente a dinâmica de crescimento populacional da planta em estudo. Neste trabalho, apresenta-se uma metodologia de ajuste e seleção de modelos de crescimento não lineares com base em indicadores estatísticos que servem como avaliadores de qualidade dos modelos. Para ilustrar o uso da metodologia, foi feito o cultivo de Lemna minor em meio Steinberg e foram ajustados três modelos aos dados médios de crescimento de suas frondes, selecionando o modelo Logístico como o melhor. Palavras-chave: Modelo de crescimento populacional. Avaliadores de qualidade. Lemna minor. Abstract The study of aquatic plants (macrophytes) is important since such plants present a potential utilization in ecotoxi- cology as bioindicators, as well in wastewater treatment. The criterious growth modelling of such plants, specifically Lemna minor, is useful for the determination of the optimal conditions of mentionedin applications - so one always looks for the best model that represents the dynamic of population growth of the plant in study. This work presents a methodology of adjustment and selection of nonlinear growth models based on statistical indicators, which work as quality evaluators for the models. To illustrate this methodology, Lemna minor was grown in Steinberg environ- ment, and three models were fitted to the fronds growth data, the Logistic model was selected as the best model. Keywords: Population growth model. Quality evaluators. Lemna minor.
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5

Theocharis, Andrea. "Experiences from the "National Model United Nations" 2001." Politikon: The IAPSS Journal of Political Science 1 (July 1, 2001): 25–26. http://dx.doi.org/10.22151/politikon.1.9.

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The National Model United Nations claims to be the most realistic simulation of the United Nations in the world. Every year more than 2500 students participate in the NMUN in New York, which partly takes place inside the original UNbuildings. For five days, the students simulate the different bodies of the UN-framework (e.g. Security Council, General Assembly, ECOSOC) by using the original UN-Rules of procedure and negotiating to formulate and pass resolutions on various topics.
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6

Healy, R. M., J. Sciare, L. Poulain, K. Kamili, M. Merkel, T. Müller, A. Wiedensohler, et al. "Sources and mixing state of size-resolved elemental carbon particles in a European megacity: Paris." Atmospheric Chemistry and Physics Discussions 11, no. 11 (November 9, 2011): 30333–80. http://dx.doi.org/10.5194/acpd-11-30333-2011.

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Abstract. An Aerosol Time-Of-Flight Mass Spectrometer (ATOFMS) was deployed to investigate the size-resolved chemical composition of single particles at an urban background site in Paris, France, as part of the MEGAPOLI winter campaign in January/February 2010. ATOFMS particle counts were scaled to match coincident Twin Differential Mobility Particle Sizer (TDMPS) data in order to generate hourly size-resolved mass concentrations for the single particle classes observed. The total scaled ATOFMS particle mass concentration in the size range 150–1067 nm was found to agree very well with the sum of concurrent High-Resolution Time-of-Flight Aerosol Mass Spectrometer (HR-ToF-AMS) and Multi-Angle Absorption Photometer (MAAP) mass concentration measurements of organic carbon (OC), inorganic ions and black carbon (BC) (R2 = 0.91). Clustering analysis of the ATOFMS single particle mass spectra allowed the separation of elemental carbon (EC) particles into four classes: (i) EC attributed to biomass burning (ECbiomass), (ii) EC attributed to traffic (ECtraffic), (iii) EC internally mixed with OC and ammonium sulfate (ECOCSOx), and (iv) EC internally mixed with OC and ammonium nitrate (ECOCNOx). Average hourly mass concentrations for EC-containing particles detected by the ATOFMS were found to agree reasonably well with semi-continuous quantitative thermal/optical EC and optical BC measurements (r2 = 0.61 and 0.65–0.68, respectively, n = 552). The EC particle mass assigned to fossil fuel and biomass burning sources also agreed reasonably well with BC mass fractions assigned to the same sources using seven-wavelength aethalometer data (r2 = 0.60 and 0.48, respectively, n = 568). Agreement between the ATOFMS and other instrumentation improved noticeably when a period influenced by significantly aged, internally mixed EC particles was removed from the intercomparison. 88 % and 12 % of EC particle mass was apportioned to fossil fuel and biomass burning respectively using the ATOFMS data compared with 85 % and 15 % respectively for BC estimated from the aethalometer model. On average, the mass size distribution for EC particles is bimodal; the smaller mode is attributed to locally emitted, mostly externally mixed EC particles, while the larger mode is dominated by aged, internally mixed ECOCNOx particles associated with continental transport events. Periods of continental influence were identified using the Lagrangian Particle Dispersion Model (LPDM) "FLEXPART". A consistent minimum between the two EC mass size modes was observed at approximately 400 nm for the measurement period. EC particles below this size are attributed to local emissions using chemical mixing state information and contribute 79 % of the scaled ATOFMS EC particle mass, while particles above this size are attributed to continental transport events and contribute 21 % of the EC particle mass. These results clearly demonstrate the potential benefit of monitoring size-resolved mass concentrations for the separation of local and continental EC emissions. Knowledge of the relative input of these emissions is essential for assessing the effectiveness of local abatement strategies.
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7

Healy, R. M., J. Sciare, L. Poulain, K. Kamili, M. Merkel, T. Müller, A. Wiedensohler, et al. "Sources and mixing state of size-resolved elemental carbon particles in a European megacity: Paris." Atmospheric Chemistry and Physics 12, no. 4 (February 15, 2012): 1681–700. http://dx.doi.org/10.5194/acp-12-1681-2012.

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Abstract. An Aerosol Time-Of-Flight Mass Spectrometer (ATOFMS) was deployed to investigate the size-resolved chemical composition of single particles at an urban background site in Paris, France, as part of the MEGAPOLI winter campaign in January/February 2010. ATOFMS particle counts were scaled to match coincident Twin Differential Mobility Particle Sizer (TDMPS) data in order to generate hourly size-resolved mass concentrations for the single particle classes observed. The total scaled ATOFMS particle mass concentration in the size range 150–1067 nm was found to agree very well with the sum of concurrent High-Resolution Time-of-Flight Aerosol Mass Spectrometer (HR-ToF-AMS) and Multi-Angle Absorption Photometer (MAAP) mass concentration measurements of organic carbon (OC), inorganic ions and black carbon (BC) (R2 = 0.91). Clustering analysis of the ATOFMS single particle mass spectra allowed the separation of elemental carbon (EC) particles into four classes: (i) EC attributed to biomass burning (ECbiomass), (ii) EC attributed to traffic (ECtraffic), (iii) EC internally mixed with OC and ammonium sulfate (ECOCSOx), and (iv) EC internally mixed with OC and ammonium nitrate (ECOCNOx). Average hourly mass concentrations for EC-containing particles detected by the ATOFMS were found to agree reasonably well with semi-continuous quantitative thermal/optical EC and optical BC measurements (r2 = 0.61 and 0.65–0.68 respectively, n = 552). The EC particle mass assigned to fossil fuel and biomass burning sources also agreed reasonably well with BC mass fractions assigned to the same sources using seven-wavelength aethalometer data (r2 = 0.60 and 0.48, respectively, n = 568). Agreement between the ATOFMS and other instrumentation improved noticeably when a period influenced by significantly aged, internally mixed EC particles was removed from the intercomparison. 88% and 12% of EC particle mass was apportioned to fossil fuel and biomass burning respectively using the ATOFMS data compared with 85% and 15% respectively for BC estimated from the aethalometer model. On average, the mass size distribution for EC particles is bimodal; the smaller mode is attributed to locally emitted, mostly externally mixed EC particles, while the larger mode is dominated by aged, internally mixed ECOCNOx particles associated with continental transport events. Periods of continental influence were identified using the Lagrangian Particle Dispersion Model (LPDM) "FLEXPART". A consistent minimum between the two EC mass size modes was observed at approximately 400 nm for the measurement period. EC particles below this size are attributed to local emissions using chemical mixing state information and contribute 79% of the scaled ATOFMS EC particle mass, while particles above this size are attributed to continental transport events and contribute 21% of the EC particle mass. These results clearly demonstrate the potential benefit of monitoring size-resolved mass concentrations for the separation of local and continental EC emissions. Knowledge of the relative input of these emissions is essential for assessing the effectiveness of local abatement strategies.
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8

Tarr, S. Byron. "The ECOMOG Initiative in Liberia: A Liberian Perspective." Issue: A Journal of Opinion 21, no. 1-2 (1993): 74–83. http://dx.doi.org/10.1017/s004716070050167x.

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This is a Liberian perspective on the unique initiative by the Economic Community of West African States (ECOWAS) to resolve the Liberian conflict by organizing and deploying a Peace Monitoring Group in Liberia. It considers whether ECOWAS’ initiative can become a self-reliant security system that can end a civil war and institutionalize deterrence to subregional inter-state and internal conflicts. Can this self-generated, West African initiative set the stage for democratization? Is the initiative the start of an inter-African cooperative security system? Is the model of Nigerian leadership a harbinger of a regional hegemony in the making? Is the modest role of the USA constructive in resolving the conflict, in light of the fact that Liberia is a country with which the USA has had an historic relationship?
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9

Alcivar García, Gilda, and Giraldo De la Caridad León Rodríguez. "Modelo de Competencias Docentes para Ambientes de Aprendizaje Mixtos. Caso ECOTEC." Podium 30 (January 1, 2016): 29–37. http://dx.doi.org/10.31095/podium.2016.30.2.

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10

Boxall, A. B. A., D. Oakes, P. Ripley, and C. D. Watts. "The application of predictive models in the environmental risk assessment of ECONOR©." Chemosphere 40, no. 7 (April 2000): 775–81. http://dx.doi.org/10.1016/s0045-6535(99)00452-x.

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11

Cullen, B. R., R. J. Eckard, M. N. Callow, I. R. Johnson, D. F. Chapman, R. P. Rawnsley, S. C. Garcia, T. White, and V. O. Snow. "Simulating pasture growth rates in Australian and New Zealand grazing systems." Australian Journal of Agricultural Research 59, no. 8 (2008): 761. http://dx.doi.org/10.1071/ar07371.

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DairyMod, EcoMod, and the SGS Pasture Model are mechanistic biophysical models developed to explore scenarios in grazing systems. The aim of this manuscript was to test the ability of the models to simulate net herbage accumulation rates of ryegrass-based pastures across a range of environments and pasture management systems in Australia and New Zealand. Measured monthly net herbage accumulation rate and accumulated yield data were collated from ten grazing system experiments at eight sites ranging from cool temperate to subtropical environments. The local climate, soil, pasture species, and management (N fertiliser, irrigation, and grazing or cutting pattern) were described in the model for each site, and net herbage accumulation rates modelled. The model adequately simulated the monthly net herbage accumulation rates across the range of environments, based on the summary statistics and observed patterns of seasonal growth, particularly when the variability in measured herbage accumulation rates was taken into account. Agreement between modelled and observed growth rates was more accurate and precise in temperate than in subtropical environments, and in winter and summer than in autumn and spring. Similarly, agreement between predicted and observed accumulated yields was more accurate than monthly net herbage accumulation. Different temperature parameters were used to describe the growth of perennial ryegrass cultivars and annual ryegrass; these differences were in line with observed growth patterns and breeding objectives. Results are discussed in the context of the difficulties in measuring pasture growth rates and model limitations.
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12

Gilli, Mario, and Yuan Li. "A model of Chinese central government." Economics of Transition 21, no. 3 (June 14, 2013): 451–77. http://dx.doi.org/10.1111/ecot.12021.

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13

de Oliveira, D. P., F. G. Leite, D. B. Carrão, A. R. Moraes de Oliveira, and D. J. Dorta. "P04-22 Fipronil and tebuconazole and their respective metabolites fipronil sulfone and hydroxytebuconazole are potential ecotox pesticides to fish and crustaceans: prediction using in silico models." Toxicology Letters 368 (September 2022): S107. http://dx.doi.org/10.1016/j.toxlet.2022.07.306.

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14

Bustamante Chan, María Monserratt, and Pilar Azcárate Goded. "Análisis de la caracterización del perfil docente del profesorado de la Universidad Tecnológica ECOTEC." REVISTA CIENTÍFICA ECOCIENCIA 4, no. 6 (July 31, 2018): 1–27. http://dx.doi.org/10.21855/ecociencia.46.56.

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Esta investigación se centra en el caso de la Universidad Tecnológica ECOTEC y la implicación que esta institución manifiesta para obtener una aproximación a la “Caracterización del perfil docente ECOTEC”, que debe reflejar el desarrollo de su Modelo Pedagógico. Es así como a través de la construcción de un cuestionario ad-hoc llamado “Caracterización del perfil docente ECOTEC” (CAPED), se persigue identificar las competencias que poseen los docentes de la universidad, y así caracterizar los perfiles más significativos para en base a eso, desarrollar diferentes propuestas de un modelo formativo. La muestra que se utilizó en este estudio fue seleccionada mediante un muestreo intencional no probabilístico respondiendo a los intereses de la investigación, el mismo se trabajó con la participación activa de 86 docentes entre tiempo completo, medio tiempo y tiempo parcial. Este estudio analiza los aspectos socio-demográficos del cuestionario que permite tener una primera imagen de las características de los participantes para así poder identificar cuáles serían los componentes de un Modelo Formativo para la Universidad Tecnológica ECOTEC.
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15

Perona, John J., Christopher A. Tsu, Charles S. Craik, and Robert J. Fletterick. "Crystal Structure of an Ecotin−Collagenase Complex Suggests a Model for Recognition and Cleavage of the Collagen Triple Helix†." Biochemistry 36, no. 18 (May 1997): 5381–92. http://dx.doi.org/10.1021/bi9617522.

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16

Adilov, Nodir, Peter J. Alexander, and Brendan M. Cunningham. "Corrigendum to “An economic “Kessler Syndrome”: A dynamic model of earth orbit debris” [Econom. Lett. 166 (2018) 79–82]." Economics Letters 170 (September 2018): 185. http://dx.doi.org/10.1016/j.econlet.2018.04.012.

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17

Chagovets, Liubov, Svitlana Prokopovych, and Viktor Kholod. "Data science methods for comprehensive assessment of regional economic development." Development Management 18, no. 2 (September 29, 2020): 43–56. http://dx.doi.org/10.21511/dm.18(2).2020.05.

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The paper deals with the assessment of the socio-economic development of Ukrainian regions using Data Science methods and multidimensional analysis, including taxonomy, n-dimensional classification, and ensemble decision trees methods. The methodological bases of economic regions devel¬opment by the economic and mathematical modeling methods were investigated. The necessity of improving and further developing estimation models of the regional economic development using business analytics tools and multidimensional scaling methods was investigated. The ensemble decision trees methods was applied for the classification model of economic development of the Ukrainian regions according to the conceptual base of the research on regional econom¬ic development. It will increase the quality level of administrative decisions making on regional de¬velopment asymmetry equalization. It is determined that in Ukraine, there is a significant imbalance of regions clusters with high and low economic level. Here was investigated the relationship between the two groups of economic development indicators – the indicators of the economic development regional performance and the group of economic potential. The results of the classification model allow identifying the set of indicators that have significant impact on the overall economic development. The developed ensemble model allows carrying out qualitative recognition and prediction of the state probability of economic development. It will improve the quality of decision making pro¬cesses on equalization of regional development asymmetry. The further research gives the possibility to develop the system of levers directions of regional development imbalance equalization, to determine priority vectors of sustainable development of both the regions and the country.
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18

Sathler, Plínio Cunha, André Luiz Lourenço, Leonardo Alves Miceli, Carlos Rangel Rodrigues, Magaly Girão Albuquerque, Lúcio Mendes Cabral, and Helena Carla Castro. "Structural model of haptoglobin and its complex with the anticoagulant ecotin variants: structure–activity relationship study and analysis of interactions." Journal of Enzyme Inhibition and Medicinal Chemistry 29, no. 2 (March 12, 2013): 256–62. http://dx.doi.org/10.3109/14756366.2013.774389.

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19

Zhang, Zhengyu, and Xiaobo He. "Corrigendum to “Estimation of heteroscedastic binary choice model with an endogenous dummy regressor” [Econom. Lett. 117 (3) (2012) 753–757]." Economics Letters 119, no. 1 (April 2013): 67. http://dx.doi.org/10.1016/j.econlet.2013.01.020.

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Zhang, Zhengyu, and Ji Tao. "Corrigendum to “Estimation of spatial autoregressive models with boundary specification problem” [Econom. Lett. 118 (1) (2013) 130–134]." Economics Letters 119, no. 1 (April 2013): 65. http://dx.doi.org/10.1016/j.econlet.2013.01.022.

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21

Syaprillah, Aditia, and Yahya Ahmad Zein. "THE MODEL OF LAW ON THE FULFILLMENT OF RIGHT TO EDUCATION AS THE CONSTITUTIONAL RIGHT OF CITIZENSHIP IN TERRITORIAL BORDER." Mimbar Hukum - Fakultas Hukum Universitas Gadjah Mada 30, no. 1 (February 15, 2018): 168. http://dx.doi.org/10.22146/jmh.27214.

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AbstractVarious weaknesses are still found in the protection of the rights of citizens, pertaining to the right to education in border area, that resulted in the backwardness and poverty of its citizens. The government of Nunukan District has released a regulation in fulfilling the right to education of citizens, that is regional regulation Number 05 Year 2012 on the management and implementation of education. Legal model for the fulfillment of the right to education of citizens in the border area should refer to the constitutional rights of citizens and in accordance with the international covenant on ECOSOC rights and principles of national education. IntisariPersoalan kebijakan perlindungan hak-hak warga negara khususnya terkait hak pendidikan di wilayah perbatasan selama ini masih terdapat berbagai macam kelemahan yang berakibat keterbelakangan, ketertinggalan dan kemiskinan warga negara di wilayah perbatasan. Kebijakan Pemda Kab. Nunukan dalam rangka pemenuhan hak atas pendidikan warga negara di wilayah perbatasan dituangkan ke dalam Perda Nomor 05 tahun 2012 tentang Pengelolaan Dan Penyelenggaraan Pendidikan. Model hukum Pemenuhan hak atas pendidikan warga negara di wilayah perbatasan harus mengacu pada hak konstitusional Warga Negara yang dijamin dalam konstitusi Indonesia dan sesuai dengan Konvenan Internasional Hak Ekosob dan prinsip-prinsip penyelenggaraan pendidikan nasional.
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Calderón Farfán, Elba Elizabeth. "Relación de los ejes sustantivos en la planificación académica en las IES: Caso ECOTEC." REVISTA CIENTÍFICA ECOCIENCIA 7 (February 6, 2020): 1–15. http://dx.doi.org/10.21855/ecociencia.7.276.

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En los últimos años la evolución de la información ha dado un gran giro dentro de la educación provocando un impacto y con la necesidad de implementar nuevas estrategias de planificación. Los hechos básicos de sustentación y sostenibilidad de la calidad de la educación superior radican en las transformaciones de las matrices de organización del conocimiento de una organización académica y de los aprendizajes, produciendo que cualquier modelo de cambio fomente la integración de las funciones sustantivas de la educación superior como son formación, investigación y gestión del conocimiento formando plataformas que se enlazan en cada uno de los procesos de gestión. Al realizar un diagnóstico basado en los ejes sustantivos en la facultad de Ciencias Económicas y Empresariales de la ECOTEC se detectó una serie de deficiencias en la gestión universitaria, por lo que presenta una nueva metodología para la gestión integrada de los procesos sustantivos, la cual cuenta con seis fases y 17 etapas diseñadas con una concepción sistémica y renovada, estas reconocen las funciones del ciclo directivo, la dirección estratégica y concreta las actividades que se dan mediante el proyecto con su enfoque de marco lógico.
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Calderón Farfán, Elba Elizabeth. "Relación de los ejes sustantivos en la planificación académica en las IES: Caso ECOTEC." REVISTA CIENTÍFICA ECOCIENCIA 7 (February 6, 2020): 1–15. http://dx.doi.org/10.21855/ecociencia.70.276.

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En los últimos años la evolución de la información ha dado un gran giro dentro de la educación provocando un impacto y con la necesidad de implementar nuevas estrategias de planificación. Los hechos básicos de sustentación y sostenibilidad de la calidad de la educación superior radican en las transformaciones de las matrices de organización del conocimiento de una organización académica y de los aprendizajes, produciendo que cualquier modelo de cambio fomente la integración de las funciones sustantivas de la educación superior como son formación, investigación y gestión del conocimiento formando plataformas que se enlazan en cada uno de los procesos de gestión. Al realizar un diagnóstico basado en los ejes sustantivos en la facultad de Ciencias Económicas y Empresariales de la ECOTEC se detectó una serie de deficiencias en la gestión universitaria, por lo que presenta una nueva metodología para la gestión integrada de los procesos sustantivos, la cual cuenta con seis fases y 17 etapas diseñadas con una concepción sistémica y renovada, estas reconocen las funciones del ciclo directivo, la dirección estratégica y concreta las actividades que se dan mediante el proyecto con su enfoque de marco lógico.
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Heslenfeld, Peter, and E. Lisette Enserink. "OSPAR Ecological Quality Objectives: the utility of health indicators for the North Sea." ICES Journal of Marine Science 65, no. 8 (November 1, 2008): 1392–97. http://dx.doi.org/10.1093/icesjms/fsn159.

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Abstract Heslenfeld, P., and Enserink, E. L. 2008. OSPAR Ecological Quality Objectives: the utility of health indicators for the North Sea. – ICES Journal of Marine Science, 65: 1392–1397. Committed to the ecosystem approach to management, OSPAR has accumulated 15 years of experience in developing a conceptual framework for ecological indicators and objectives, and in applying the framework to the North Sea as a test case. These Ecological Quality Objectives (EcoQOs) have become a model for the implementation of the new European Marine Strategy Framework Directive. We describe the history of EcoQO development, its current status, and future needs. We also present our positive and negative experiences in developing the approach, and conclude that regional sea conventions and marine research institutes in Europe should join forces to accelerate the development of ecosystem indicators and objectives, using existing concepts.
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Cerezo García, Verónica, Heri Óscar Landa Díaz, and Ignacio Perrotini Hernández. "Histéresis y trampa de desarrollo en la economía mexicana en tiempos de la crisis sanitaria Covid19." PANORAMA ECONÓMICO 16, no. 32 (October 28, 2020): 35. http://dx.doi.org/10.29201/pe-ipn.v16i32.272.

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En este art´ıculo analizamos te´orica y emp´ıricamente la hip´otesis de que en la econom´ıa mexicana existen una trampa de pobreza y de desarrollo `a la Nurkse (nurkse1952some; nurkse1966problems) y un fen´omeno hist´eresis que magnifican los efectos econ´omicos inducidos por la crisis sanitaria del Covid19: un c´ırculo vicioso configurado por la interacci´on entre una trampa de pobreza y el estancamiento econ´omico,en virtud del cual un bajo nivel de ingreso per c´apita contrae el tama˜no del mercado, el ahorro y losincentivos para la inversi´on. Asimismo, el bajo nivel de productividad y de formaci´on de capital limitanla expansi´on del mercado interno para la industria manufacturera local no integrada al modelo de crecimientoexportador.
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Hall, Alastair R., Atsushi Inoue, James M. Nason, and Barbara Rossi. "Corrigendum to “Information criteria for impulse response function matching estimation of DSGE models” [J. Econom. 170 (2012) 499–518]." Journal of Econometrics 178 (January 2014): 706. http://dx.doi.org/10.1016/j.jeconom.2013.09.001.

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Romizi, Roberto. "“Se tutti gli uomini sono responsabili per l’ambiente, i medici lo sono due volte”. Il pensiero dell’International Society of Doctors for Environment – ISDE." Giornale di Clinica Nefrologica e Dialisi 33 (April 22, 2021): 53–56. http://dx.doi.org/10.33393/gcnd.2021.2264.

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The Italian Society of Doctors for the Environment – ISDE Italy is an environmental organization of medical doctors. It is an independent, non-profit organization affiliated to the International Society of Doctors for the Environment – ISDE (which has a Consultative Status with WHO and a Consultative General Status with ECOSOC and fosters co-operative efforts with different other international organizations and many NGOs). The main purpose of ISDE Italy is to help defend environment both locally and globally to prevent numerous illnesses, ensure the necessary conditions for health, and improve the quality of life. It aims to educate and update physicians and the general public and stimulate awareness and initiatives by public and private bodies. ISDE Italy collaborates with different national, regional and local organizations, networks and NGOs as well. All ISDE Italy projects follow an integrated model finalized to actions which are generally preceded by training moments.
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Bo, Lijun, Renming Song, Dan Tang, Yongjin Wang, and Xuewei Yang. "Erratum to “Lévy risk model with two-sided jumps and a barrier dividend strategy” [Insurance Math. Econom. 50(2) (2012) 280–291]." Insurance: Mathematics and Economics 52, no. 1 (January 2013): 124–25. http://dx.doi.org/10.1016/j.insmatheco.2012.05.001.

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Paula Villagómez de Oliveira e Souza, Paula, and Giraldo de la Caridad León Rodríguez. "Modelo de generación de valor en la gestión educativa con empleo de las TIC. Caso: Universidad ECOTEC, periodo 2020-2021." REVISTA CIENTÍFICA ECOCIENCIA 8 (December 28, 2021): 111–25. http://dx.doi.org/10.21855/ecociencia.80.637.

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El Ecuador luego de atravesar una realidad dolorosa, producto del encierro que cada uno tuvo que pasar en su domicilio desde el 17 de marzo del 2020, causada por la pandemia, donde todas las empresas fueron afectadas en la parte económica causada por una recesión propia de la paralización, muchas empresas, inclusive las instituciones educativas tuvieron que pasar por un proceso de reestructuración en su repensar y buscar nuevas oportunidades para no quebrar. La Universidad Tecnológica ECOTEC, a pesar de los obstáculos presentados, debido a la situación económica de los estudiantes, a la capacidad de las operadoras de internet, de encontrar una plataforma idónea para el nuevo reto de clases virtuales y de plantear nuevas metodologías para las clases, logró gracias a decisiones acertadas de sus directivos, donde las Rectora PhD Gilda Alcívar de Gilbert está a la cabeza, pudo prepararse para la nueva normalidad. Ya desde el segundo semestre del año 2020, la Universidad ECOTEC ha venido ejecutando estrategias, donde podemos destacar el proceso de vacunación de los docentes, estudiantes, graduados y familiares de estudiantes, docentes y graduados, para motivar a los estudiantes hacia la reactivación, estas estrategias han dado resultado debido a que cada vez están optando los estudiantes por la modalidad híbrida y presencial. Este artículo presenta el resultado de la aplicación del modelo de gestión educativa para generar valor, desarrollada por la autora, donde destaca las estrategias identificadas en los componentes y pilares del modelo, se presentará en este artículo conclusiones y recomendaciones.
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Hakim, Rachman. "FULL-FLEDGED INFLATION TARGETING FRAMEWORK DAN PERSISTENSI INFLASI." Jurnal Ekonomi Pembangunan 13, no. 2 (December 1, 2016): 169. http://dx.doi.org/10.22219/jep.v13i2.3896.

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Setting the inflation rate may look simple but certainly not easy. This can be evidenced by frequent melencengnya inflation target has been set by Bank Indonesia. To overcome this, the 2004 Law No. 3 Article 7 were excluded, thus changing the policy framework of inflation targeting lite be a full-fledged inflation targeting. This means that Bank Indonesia will focus on regulating the rate of inflation only. The purpose of this study to determine whether the rate of inflation to be more easily controlled in the period of full-fledged inflation targeting. The method used is the autoregressive model estimation. The results showed that the application of full-fledged inflation targeting has not had a positive impact in regulating the rate of inflation. In the period 2005-2015, was inflation is still very difficult to control or tend to be persistent. Interestingly, this was due to the strong influence of the global economy on the Indonesian econom
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Younsi, Moheddine, and Marwa Bechtini. "Does good governance matter for FDI? New evidence from emerging countries using a static and dynamic panel gravity model approach." Economics of Transition and Institutional Change 27, no. 3 (May 2019): 841–60. http://dx.doi.org/10.1111/ecot.12224.

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Halder, Shaymal C., and Emir Malikov. "Corrigendum to “Smoothed LSDV estimation of functional-coefficient panel data models with two-way fixed effects” [Econom. Lett. 192 (2020) 109239]." Economics Letters 209 (December 2021): 110134. http://dx.doi.org/10.1016/j.econlet.2021.110134.

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Boudreault, Mathieu, Hélène Cossette, and Étienne Marceau. "Erratum to: “Risk models with dependence between claim occurrences and severities for Atlantic hurricanes” [Insurance Math. Econom. 54 (2014) 123–132]." Insurance: Mathematics and Economics 61 (March 2015): 298. http://dx.doi.org/10.1016/j.insmatheco.2014.12.005.

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Kruiniger, Hugo. "Corrigendum to “Maximum likelihood estimation and inference methods for the covariance stationary panel AR(1)/unit root model” [J. Econom. 144 (2008) 447–464]." Journal of Econometrics 178, no. 2 (February 2014): 824. http://dx.doi.org/10.1016/j.jeconom.2013.11.004.

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35

Neycheva, Mariya. "How might the negative impact of higher education on growth be explained? The role of vertical qualification (mis)match in an MRW‐type model." Economics of Transition and Institutional Change 27, no. 4 (May 21, 2019): 943–69. http://dx.doi.org/10.1111/ecot.12225.

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36

Diers, Dorothea, Marc Linde, and Lukas Hahn. "Addendum to ‘The multi-year non-life insurance risk in the additive reserving model’ [Insurance Math. Econom. 52(3) (2013) 590–598]: Quantification of multi-year non-life insurance risk in chain ladder reserving models." Insurance: Mathematics and Economics 67 (March 2016): 187–99. http://dx.doi.org/10.1016/j.insmatheco.2015.10.013.

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37

Martín-Gabaldón, Marta. "New crops, new landscapes and new socio-political relationships in the cañada de Yosotiche (Mixteca region, Oaxaca, Mexico), 16th-18th centuries." Historia Agraria. Revista de agricultura e historia rural 75 (June 1, 2018): 33–68. http://dx.doi.org/10.26882/histagrar.075e03g.

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Our aim is to determine continuities and changes in the cañada of Yosotiche environment since the introduction by Spanish conquerors and settlers of new crops, especially sugarcane. A study of the biolog ical modifications of a particular ecosystem allows inferences on changes and continuities in socio-political relations. This particular case study contributes to a discussion of the general model of Mixtec political territoriality. The methodology applied here involves a convergence that integ rates the analysis of historical documents, archaeological data, fieldwork and anthropological information, along with discoveries made by earlier research. It offers insight into occupational dynamics and their ties to the political, administrative, economic and social structures within the cañada dur ing colonial times. The introduction of foreign crops produced changes in the ecolog ical complementarity system practiced by the villages that possessed lands in the cañada, consequently modifying the labour relations of the inhabitants. An analysis of this situation reveals the singular status of the lands owned by Tlaxiaco, which seemingly fit the regulations dictated by the Laws of the Indies but, in essence, meant the continuity of pre-Hispanic traditions.
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38

Kuteynikov, A. E. "The United Nations 30 Years After the Cold War: a Theoretical Analysis of Changes in the International Organization." Journal of International Analytics 13, no. 1 (March 28, 2022): 24–47. http://dx.doi.org/10.46272/2587-8476-2022-13-1-24-47.

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This paper outlines the contours of a conceptual examination of the trends of UN change that have emerged in the post-bipolar era. The author seeks to understand what the results of the changes are and how they manifest themselves. Due to the complexity of the object under study, the duration of the analyzed period and its eventfulness, the paper takes into account only some typical fragments of the general picture, and some judgments and conclusions are expressed in a discussion manner. I analyze the following patterns of change have characterized the main UN bodies: new goals and activities of the bodies themselves and the organization as a whole, more topics under discussion, greater organizational autonomy, higher costs, greater involvement of civil society organizations and experts in agenda setting and various activities, structural reforms, summitization of the General Assembly and Security Council, the creation of high-level segments of ECOSOC, and strengthening of the coordinating role of the Committee of Senior Management. In methodological terms, the article is based on a multilevel model of an international organization developed in the framework of the sociological approach.
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Csillag, Paula, and Tilia Monte de Almeida. "O modelo de percepção visual SENS|ORG|INT usado na arquitetura: um estudo de caso sobre cores usadas no Ceta Ecotel Macapá, Brasil." Pós. Revista do Programa de Pós-Graduação em Arquitetura e Urbanismo da FAUUSP 24, no. 43 (August 31, 2017): 98. http://dx.doi.org/10.11606/issn.2317-2762.v24i43p98-111.

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O objetivo deste artigo é apresentar um estudo sobre como o uso de cores em ambientes arquitetônicos externos e internos de um hotel brasileiro afetou o comportamento do consumidor. Os resultados são analisados em termos do Modelo SENS|ORG|INT, que diferencia aspectos fisiológicos da resposta humana a cores, de fatores culturais e interpretativos (CSILLAG, 2008). O estudo foi conduzido no Ceta Ecotel, um hotel ecológico na cidade de Macapá no nordeste do Brasil. A metodologia foi de estudo de caso (YIN, 2004), usando um processo de triangulação, cruzando informações obtidas de três pontos de vista: um questionário qualitativo e quantitativo com 50 funcionários do hotel, incluindo os proprietários, um questionário qualitativo e quantitativo com 640 hóspedes do hotel e análise dos dados obtidos usando o Modelo de Percepção SENS|ORG|INT. Os resultados indicam motivos para as cores mais e menos preferidas, apresentando sugestões para uso futuro de cores em projetos arquitetônicos.
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40

Walker, David R., and Robert E. Davis. "Error Climatology of the 80-Wave Medium-Range Forecast Model." Weather and Forecasting 10, no. 3 (September 1995): 545–63. http://dx.doi.org/10.1175/1520-0434(1995)010<0545:ecotwm>2.0.co;2.

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41

Zhavoronok, Artur. "THEORETICAL FUNDAMENTALS OF THE STUDY OF ECONOMIC CYCLES CLASSIFICATION." Problems and prospects of economics and management, no. 4(28) (2021): 26–34. http://dx.doi.org/10.25140/2411-5215-2021-4(28)-26-34.

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Many years of research on the processes taking place in national economies, reveal the regularity of fluctuations in economic dynamics: the recessions and upswing of business activity are constantly changing each other. The changes caused by such oscillatory processes cover almost all spheres of society. The ideas of cyclicity became widespread in scienceat the beginning of the XIX century, but to this day the nature of the economic cycle, its essence, classification and role in econom-ics is one of the most controversial theories. The main purpose of the article is to deepen the theoretical provisions of the study and systematization of the classification of economic cycles.The article investigates the basic theoretical concepts for the definition and classification of types of economic cycles. To do this, we analyzed different classification features that distinguish different types of economic cycles, based on their origin (cyclical fluctuations, non-cyclical), depending on the causes of their occurrence, J.M. Keynes's cycle theory, mone-tary theory of economic cycle M. Friedman , J. Schumpeter's theory of the influence of scientific and technological progress, A.Aftalion theory of disproportion between the production of consumer goods and capital accumulation, M. Tugan-Baranovskyi theory of capital accumulation), operating conditions (cycles of monopolistic competition, cycles of pure mo-nopoly, cycles of free competition) and duration (Forrester cycles lasting 200-400 years; ultra-large age cycles lasting 120 years; J. Model cycles lasting 90-122 years; Schumpeter cycles lasting 50-55 years; H cycles D.Kondratiev, the duration of which is 40-60 years, Thomas cycles, the duration of which is 18-22 years, the cycle and Abramowitz, whose duration is 20 years; Kuznets construction cycles, which last 20 years; Zhulyar cycles, which last 7-11 years; Marx's production cycles, which last 7-11 years; Kitchen cycles lasting 3-5 years; private business cycles lasting 1-2 years. This made it possible to systematize and expand their types on the basis of the duration of economic cycles, as in the available literaturethere is no detailed division on this basis of economic cycles. Thus, the correct selection of classification features of the study of econom-ic cyclicality and the set of macroeconomic parameters used in it, is extremely important for determining the structure and mechanism of formation of economic cycles that are detected.
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42

Basovskaya, Elena, and Leonid Basovskiy. "Does the distribution of income between labor and capital affect economic growth?" Scientific Research and Development. Economics 10, no. 6 (November 14, 2022): 16–20. http://dx.doi.org/10.12737/2587-9111-2022-10-6-16-20.

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The work is devoted to obtaining quantitative estimates of the impact of the dis-tribution of income between labor and capital on the rate of economic growth in the modern world. We used UN data on a set of European countries, post-Soviet countries, Israel, Canada, the USA and Turkey. To assess the impact of the distribution of income between labor and capital on economic growth rates, linear econometric models of the dependence of economic growth rates on the share of labor force in GDP by years of the period from 2007 to 2019 built. The obtained results showed that the relationship between the rates of economic growth and the share of labor force in GDP in the mod-ern world is not significant, the influence of the share of labor force in GDP on econom-ic growth is negative, but declining obliquely, in recent years it has become insignificant. it can be expected that in the 2020s this influence may become positive. Outpacing wage growth rates can help increase labor productivity and accelerate economic growth in the transition to a post-industrial economy.
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43

Rajabi Hamedani, Sara, Tom Kuppens, Robert Malina, Enrico Bocci, Andrea Colantoni, and Mauro Villarini. "Life Cycle Assessment and Environmental Valuation of Biochar Production: Two Case Studies in Belgium." Energies 12, no. 11 (June 6, 2019): 2166. http://dx.doi.org/10.3390/en12112166.

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It is unclear whether the production of biochar is economically feasible. As a consequence, firms do not often invest in biochar production plants. However, biochar production and application might be desirable from a societal perspective as it might entail net environmental benefits. Hence, the aim of this work has been to assess and monetize the environmental impacts of biochar production systems so that the environmental aspects can be integrated with the economic and social ones later on to quantify the total return for society. Therefore, a life cycle analysis (LCA) has been performed for two potential biochar production systems in Belgium based on two different feedstocks: (i) willow and (ii) pig manure. First, the environmental impacts of the two biochar production systems are assessed from a life cycle perspective, assuming one ton of biochar as the functional unit. Therefore, LCA using SimaPro software has been performed both on the midpoint and endpoint level. Biochar production from willow achieves better results compared to biochar from pig manure for all environmental impact categories considered. In a second step, monetary valuation has been applied to the LCA results in order to weigh environmental benefits against environmental costs using the Ecotax, Ecovalue, and Stepwise approach. Consequently, sensitivity analysis investigates the impact of variation in NPK savings and byproducts of the biochar production process on monetized life cycle assessment results. As a result, it is suggested that biochar production from willow is preferred to biochar production from pig manure from an environmental point of view. In future research, those monetized environmental impacts will be integrated within existing techno-economic models that calculate the financial viability from an investor’s point of view, so that the total return for society can be quantified and the preferred biochar production system from a societal point of view can be identified.
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Dranko, O. I. "FORECASTING OF FINANCING OF ENTERPRISE CONVERSION." Bulletin of the South Ural State University. Ser. Computer Technologies, Automatic Control & Radioelectronics 20, no. 4 (December 2020): 74–82. http://dx.doi.org/10.14529/ctcr200408.

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Purpose of the study. The task set by the President of Russia to increase the output of civilian products at the enterprises of the defense complex to 50% in 2030 requires the study of various ne-cessary resources, as well as models and methods of managing them. In the context of the econom-ic crisis caused by the coronavirus in 2020, the relevance of studying the possibilities of achieving this significant task is increasing. In this work, the goal is to develop a mathematical model, conduct modeling and assess the need for financing the growth of civilian output at enterprises in the re-search and development industry. Methods. A simulation model for multi-period forecasting of the financial state of the enterprise is used. Methods of processing big data are used to obtain the in-itial information. The means of regression analysis are used to determine the dependencies of the fi-nancial statements. Scenario analysis methods allow us to consider and highlight the significant fac-tors influencing the research goal. Results. A multi-period model of forecasting the financial and economic state of an enterprise has been developed to assess the consequences of an increase in ci-vilian production at enterprises of scientific research and development. The initial data of financial statements based on open data from Russian Agency for Statistics (Rosstat) were obtained, and the aggregation of reporting indicators was carried out. Simulation calculations were carried out in the scenarios of inertial growth, growth with an increase in efficiency, and replacement growth. The task of increasing the share of civilian products to 50% by 2030 at scientific and technical en-terprises in Russia will require significant additional funding, an estimate of about 1,300 billion ru-bles in an inertial scenario. The development and implementation of a program to improve the effi-ciency of enterprises significantly reduces the need for additional financing, the estimate is about 1,100 billion rubles with a slight improvement in efficiency parameters. Conclusion. The results of this study can be used to develop industrial development programs both at the industry level and at the level of individual enterprises. Increasing the output of civilian products will require significant funding. Development and implementation of operational efficiency programs of enterprises can significant-ly reduce the need for additional funding.
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45

Krasavtseva, Eugenia, Victoria Maksimova, Dmitriy Makarov, and Eugeniy Potorochin. "Modelling of the Chemical Halo of Dust Pollution Migration in Loparite Ore Tailings Storage Facilities." Minerals 11, no. 10 (September 30, 2021): 1077. http://dx.doi.org/10.3390/min11101077.

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The article presents a study of the environmental impact of dusting tailing dumps of rare-metal ore dressing in the Murmansk region of Russia. The purpose of the study was to establish patterns in the atmochemical halo migration of the dust pollution of loparite ore dressing tailings. The geotechnical characteristics and material composition of the tailings material have been investigated. Potentially dusty areas identified. Models of dispersion of inorganic dust under different meteorological scenarios are constructed: at low wind load, normal and unfavorable meteorological conditions. The modeling of the spread of pollutants in the area exposed to dust at the storage site was carried out in the program for modeling atmospheric pollution Ecolog-4.60. Calculation of the dispersion of inorganic dust containing 20–70% SiO2 showed that the atmochemical halo of tailings dust pollution spreads over tens of kilometers, and already at a wind speed of about 8 m/s, the concentration of suspended solids at the border of the enterprise sanitary protection zone exceeds the maximum one-time maximum permissible concentration is 3–3.3 times, and under unfavorable meteorological conditions—Dusting reaches the boundaries of the residential area (inhabited locality Revda), located in the north-west of the enterprise, and exceeds the MPCm.o. 1.5 times.
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46

Zhang, Liguo, Luchen Huang, Jinglin Xia, and Kaifeng Duan. "Spatial-Temporal Evolution and Its Influencing Factors on Urban Land Use Efficiency in China’s Yangtze River Economic Belt." Land 12, no. 1 (December 26, 2022): 76. http://dx.doi.org/10.3390/land12010076.

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Improving urban land use efficiency is a feasible way to realize sustainable development and alleviate urban land pressure on the city. The main purpose of this article is to measure the urban land use efficiency of the Yangtze River Economic Belt, and explore its evolutionary trends and influencing factors, so as to provide references for policy formulation to promote efficient land use and sustainable development. Therefore, we calculated the value of urban land use efficiency in the Yangtze River economic belt from 2004 to 2019, based on the super efficiency SBM model, including unexpected output. Further, we analyzed the spatial-temporal evolution, and spatial correlation and its influencing factors. The main results are as follows: Firstly, urban land use efficiency in the Yangtze River econom`ic belt continues to improve as a whole, but it is higher in the east and lower in the west. In the kernel density evolution map, the development trend is steep at first and then slows, and the gap tends to decrease. Secondly, the spatial correlation of urban land use efficiency in the Yangtze River economic belt increases year by year, showing a positive correlation overall. The high-high agglomeration shifts to the east, low-low agglomeration shifts to the west, and low-high and high-low agglomeration show scattered distribution. The hot and cold spots are distributed regionally and have a diffusion trend. Thirdly, the results of the spatial Dubbin model show that the urbanization level, government expenditure and industrial instruction transformation can promote the improvement of urban land use efficiency, and people density and land use scale can inhibit its improvement. Additionally, there is remarkable heterogeneity in the effect of these influencing factors. On the whole, the effect of non-resource-based cities is better, and it is more so in the cities of the eastern region.
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Donskaya, A. E., and L. K. Radchenko. "Geoinformation study of the Ob river in the aspect of the digital economy development in Novosibirsk City." Vestnik SSUGT (Siberian State University of Geosystems and Technologies) 27, no. 3 (2022): 62–73. http://dx.doi.org/10.33764/2411-1759-2022-27-3-62-73.

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The article considers the need for a methodology for creating a geoinformation model of the Ob River, which is organized as a set of spatial objects that reflect the current state of the Ob River and related objects within its borders, participating in the digital economy of the city. Attracting investments is one of the main tasks of economic developing of any city. One of the well-timed and effective measures to support investors' initiatives is the placement of up–to-date information about investment-attractive objects. Recently, the land management and urban planning industry has been developing at a high speed, which contributes to the requests of citizens, specialists in various industries to search for data on the state and development of a particular territory in various areas of activity, as well as obtaining comprehensive information about the current state of affairs and the forecast for its further develop-ment. There is no geoinformation model (GIM) where you can immediately get all the necessary in-formation, so this forces the user to collect information piecemeal from various departmental portals. The correctness of making any decisions, the degree of financial or other risks largely depends on the information received. This is confirmed by the fact that not just cartographic materials have become in demand, but unified information spaces containing not only diagrams of the current state of the object, but also a complete database of mapped objects. The introduction of such a river GIM will make it possible to systematize and maintain geospatial data, which in the future may lead to positive econom-ic effects. The main difference of the developed GIM is the created database, which is activated if necessary, and geoinformation tasks are solved with the help of it. The user can view each layer of the model separately, or combine several layers at once, or select and view individual information from different layers, thereby fulfilling the strategic objectives of the Digital Economy of the Russian Fed-eration program. The general geographical basis and thematic content of the Ob River geoinformation model are described. A fractional technological scheme for creating a geoinformation model of the Ob River has been developed. A description of the structural content of attribute tables is given, and a library of map symbols for displaying general geographic and thematic elements is developed.
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Sanders, Frederick. "Explosive Cyclogenesis over the West-Central North Atlantic Ocean, 1981–84. Part II. Evaluation of LFM Model Performance." Monthly Weather Review 114, no. 11 (November 1986): 2207–18. http://dx.doi.org/10.1175/1520-0493(1986)114<2207:ecotwc>2.0.co;2.

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49

González Palma, Karem, and Viviana Henriques Aguilera. "Desafíos sociales y tecnológicos en la pandemia y pospandemia: implementación de tecnología educativa en el proceso de vinculación con la sociedad de la Universidad ECOTEC 2020-2021." REVISTA CIENTÍFICA ECOCIENCIA 9 (December 22, 2022): 167–93. http://dx.doi.org/10.21855/ecociencia.90.760.

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La vinculación con la sociedad es un eje integrador, que acompaña a la investigación y la academia en el modelo educativo de las Instituciones de Educación Superior del Ecuador. Este proceso ha sido concebido para su ejecución en modalidad presencial, atendiendo las necesidades y resolviendo las problemáticas de los grupos vulnerables en el entorno de la institución. Debido a la actual pandemia por Covid-19, la movilización y acción en territorio, se convierten en un desafío social. Por ello, se plantea la implementación de tecnología educativa para el desarrollo del proceso de vinculación con la sociedad en la Universidad ECOTEC. Para ello se integrarán los componentes de: adaptación de normativa, alineación teórica e implementación de tecnología educativa. Como mecanismo de validación, se presentará la medición de nivel de satisfacción de los estudiantes que fueron parte del proceso.
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Osabuohien-Irabor, Osarumwense. "Testing for causality-in-mean and in-variance among the U.S., China, and some Africa capital markets: A CCF approach." Journal of Economics and Management 43 (2021): 131–52. http://dx.doi.org/10.22367/jem.2021.43.07.

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Aim/purpose – Owing to the huge risk occasioned by negative contagion effects associ- ated with financial market linkages, markets participants and academia have continued to examine the capital market cross country interdependence at different levels. In this paper, we examined the causal relationships among the U.S., China and some top Afri- can capital market indexes. Design/methodology/approach – To examine the mean and variance causal effects, we estimated a univariate AR-EGARCH model for all capital market indexes. Then em- ployed the residual-based two-step bivariate cross-correlation function (CCF) test devel- oped by Cheung & Ng (1996). The test statistics had a well-defined asymptotic standard distribution that was robust to distributional assumptions. Findings – We detected both the feedback and unidirectional causality effects among African capital markets. These results show that African financial markets are still not fully integrated within the African continent. Expectedly, the results from our empirical analysis showed the existence of a unidirectional causality both in mean and variance from the U.S. and Chinese markets to African capital markets. This demonstrated that events in the U.S. and China are not irrelevant to African markets. Research implications – Owing to the fact that knowledge of other financial markets provides adequate information about a market situation, the results from this research paper will be helpful for the policymakers of African countries in shaping their econom- ic policies, help investors diversify investments with less risk, and international portfolio managers make portfolio allocation decisions. Originality/value/contribution – This paper examined the mean and risk dynamics of three top African, the U.S., and Chinese capital markets with their inter-dependence using the CCF approach. Furthermore, to the best of our knowledge, no previous re- search paper on this issue exists. Keywords: causality-in-mean, causality-in-variance, capital market, cross-correlation function. JEL Classification: G10, F31, C20
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