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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Nixdorf, Uwe; Dethloff, Klaus; Rex, Markus; Shupe, Matthew; +37 Authors

    In the name of the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) Consortium, and all authors of articles citing MOSAiC, we thank all those who contributed to MOSAiC and made this drift observatory possible!

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ ZENODOarrow_drop_down
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    ZENODO
    Other ORP type . 2021
    License: CC BY
    Data sources: Datacite
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    ZENODO
    Other ORP type . 2021
    License: CC BY
    Data sources: ZENODO
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    ZENODO
    Other ORP type . 2021
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    Data sources: Datacite
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ ZENODOarrow_drop_down
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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      Other ORP type . 2021
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      ZENODO
      Other ORP type . 2021
      License: CC BY
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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      Other ORP type . 2021
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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Rugel, G.; Akhmadaliev, S.; Belokonov, G.; Böttger, R.; +14 Authors

    The combination of an ion source with very good spatial resolution with a tandem accelerator is a long standing idea to improve the sensitivity by orders of magnitude [1-3]. Translating this idea to reality has its challenges [e.g. 4-6]. Having a strong focus on natural, metal, and mineral resources the Helmholtz Institute Freiberg for Resource Technology installed such a system at the Ion Beam Centre at HZDR. This so-called Super-SIMS will be embedded into a system of consecutive micro-analytical methods devoted to the characterization of minerals and ores. The secondary ion beam of the SIMS (CAMECA IMS 7f-auto) is injected into the pre-existing Dresden Accelerator Mass Spectrometry facility [7,8] which removes isobaric molecular signatures in the ion beam. The SIMS component remains as an autonomous analytical instrument with the additional option/advantage to inject the negative secondary ion beam at energies of up to 40 keV (to match the acceptance conditions) into the accelerator. A dedicated ion optical unit has been constructed and installed to focus the ion beam to the accelerator entrance. First measurements of the performance parameters will be presented. We analyzed several matrices and mass ranges of isotopes like a P-doped Si-wafer, natural galena (PbS) and the elements between Ga and As in several natural and synthetic matrices. [1] Purser et al. Surface and Interface Analysis 1(1), 1979, 12. [2] J. M. Anthony, D. J. Donahue, A. J. T. Jull, MRS Proceedings 69 (1986) 311-316. [3] S. Matteson, Mass Spectrom. Rev., 27 (2008) 470. [4] Ender et al. NIMB 123 (1997) 575. [5] Maden, PhD thesis, ETH Zurich 2003. [6] Fahey et al. Analytical Chemistry 88(14), 2016, 7145. [7] Akhmadaliev et al., NIMB 294 (2013) 5. [8] Rugel et al. NIMB 370 (2016) 94.

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao ROBISarrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    ROBIS
    Lecture . 2017
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      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao ROBISarrow_drop_down
      image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
      ROBIS
      Lecture . 2017
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  • Authors: Aithal, Sreeramana; Aithal, Shubhrajyotsna;

    Well defined and futuristic education policy is essential for a country at school and college levels due to the reason that education leads to economic and social progress. India with the leadership of its current prime minister and an expert team with members of varied backgrounds has developed and planned to implement a new education policy during the next decade of the 21st century called Indian National Education Policy (NEP-2020). The aim, objectives, and details are well known to practitioners and the public. NEP-2020 is an innovative and futuristic proposal with both positive and negative aspects, framed with the objective to provide a quality school education and higher education to everyone with an expectation of holistic & research-oriented progress. This paper initially depicts an overview of NEP-2020, distinguish the strengths & weakness of the policy at higher education & research part, evaluation of the implementation suggestions given in the policy, identifying and analyzing possible generic strategies for implementation of NEP-2020 to fulfill its objectives based on focus group discussions. The paper also includes many predictive proposals on issues like developing quality universities & colleges, institutional restructuring & consolidation, more holistic & multidisciplinary education, optimal learning environment & student support, transforming the regulatory system of higher education, technology usage & integration, and online & digital education. Finally, some recommendations are made to implement the NEP-2020 effectively irrespective of various constraints. This article can be considered as a reference to the policy implementation teams of Govt of India.

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  • Authors: Sunde, Tafirenyika;

    This study examines the relationship between education expenditure and economic growth in Mauritius. The study employed the ARDL bounds testing methodology for the period 1976 to 2016. The study found that education expenditure Granger causes economic growth in Mauritius in the short run. In addition, the study also found that economic growth does not Granger cause education expenditure in Mauritius in the short run. However, in the long-run, the study found that there are long-run relationships between education expenditure and economic growth in both equations; and this means that an increase in either of the variables will eventually lead to an increase in the other variable. The study, therefore, found support for the hypothesis that investment in education raises economic growth. This means that Mauritius has the potential to benefit from further investments in education in the future.

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    Authors: Gross, Matthias;
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ DESY Publication Dat...arrow_drop_down
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ DESY Publication Dat...arrow_drop_down
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  • Authors: Tervala, Juha;

    Lucas (1987, 2003) finds that the welfare costs of business cycles are trivial, 0.008-0.05% of consumption in each period. I analyze the implications of hysteresis for the welfare costs of business cycles by extending the basic New Keynesian model with hysteresis. Hysteresis is defined as the negative effect of the negative, one-percentage point output gap on potential output. The net present value of the welfare cost of a recession in which the deviation of output from the trend is 3% is 0.6% of consumption without hysteresis. If the degree of hysteresis is 0.4, an empirical estimate for OECD countries, the welfare cost increases – by a factor of 121 – to 70%. The study of stabilization policy using New Keynesian models without hysteresis is pointless; the potential benefits of stabilization policy are notable only in the presence of hysteresis.

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  • Authors: Sankowski, Olga; Otto, Kevin N.; Moon, Seung Ki; Krause, Dieter;
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  • Authors: Kodila-Tedika, Oasis; Asongu, Simplice;

    We assess the correlations between tribalism and financial development in 123 countries using data averages from 2000-2010. The tribalism index is used to measure tribalism whereas financial development is measured from perspectives of financial intermediary and stock market developments. The long-term variable is stock market capitalisation while short-run indicators include: private and domestic credits. We find that tribalism is negatively correlated with financial development and the magnitude of negativity is higher for financial intermediary development relative to stock market development. The findings are particularly relevant to African and Middle Eastern countries where the scourge is most pronounced.

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  • Authors: Keita, Moussa;

    This manuscript provides an introduction to the econometric analysis. It is articulated around two parts structured on six chapters. The first part, devoted to the study of the linear model, consists of four chapters. The first presents some useful statistical concepts in Econometrics while the second and the third chapter is devoted to the study of simple linear model and multiple linear model. Concerning the fourth chapter, it focuses on the study of the generalized linear model (used in case of violation of certain standard assumptions of the linear model). In this first part, a particular emphasis is put on estimation methods such as ordinary least squares and maximum likelihood method. A broad discussion is also conducted on inference techniques and approaches to hypothesis testing. The second part of the work is devoted to the study of qualitative dependent variable models. In this part, two classes of models are considered: those of dichotomous dependent variable models (standard probit and logit model) and the models of polytomous dependent variable (ordered and unordered multinomial probit and logit models).

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  • Authors: Hou, Yang; Holmes, Mark;

    While dynamic optimal hedging is of major interest, it remains unclear as to whether incorporating higher moments of a return distribution leads to better hedging decisions. We examine the effects of introducing a bivariate skew-Student density function with static and autoregressive conditional skewness and kurtosis on dynamic minimum-variance hedging strategies. Static higher order moments improve reductions in variance and value at risk of hedged portfolios. The inclusion of dynamics through an autoregressive component extends these improvements further. These benefits avail for short and long hedging horizons, which is highlighted in the global financial crisis. The static and conditional higher order moments enhance the notion that the size and smoothness of hedge ratios positively relate to hedging effectiveness while volatility does the reverse. Improved effectiveness can be explained given an upgrade of size and smoothness and a downgrade of volatility of hedge ratios attributed to the dynamics of higher order moments.

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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Nixdorf, Uwe; Dethloff, Klaus; Rex, Markus; Shupe, Matthew; +37 Authors

    In the name of the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) Consortium, and all authors of articles citing MOSAiC, we thank all those who contributed to MOSAiC and made this drift observatory possible!

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ ZENODOarrow_drop_down
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    Other ORP type . 2021
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    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    ZENODO
    Other ORP type . 2021
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    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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    Other ORP type . 2021
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ ZENODOarrow_drop_down
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      Other ORP type . 2021
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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      Other ORP type . 2021
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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  • image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    Authors: Rugel, G.; Akhmadaliev, S.; Belokonov, G.; Böttger, R.; +14 Authors

    The combination of an ion source with very good spatial resolution with a tandem accelerator is a long standing idea to improve the sensitivity by orders of magnitude [1-3]. Translating this idea to reality has its challenges [e.g. 4-6]. Having a strong focus on natural, metal, and mineral resources the Helmholtz Institute Freiberg for Resource Technology installed such a system at the Ion Beam Centre at HZDR. This so-called Super-SIMS will be embedded into a system of consecutive micro-analytical methods devoted to the characterization of minerals and ores. The secondary ion beam of the SIMS (CAMECA IMS 7f-auto) is injected into the pre-existing Dresden Accelerator Mass Spectrometry facility [7,8] which removes isobaric molecular signatures in the ion beam. The SIMS component remains as an autonomous analytical instrument with the additional option/advantage to inject the negative secondary ion beam at energies of up to 40 keV (to match the acceptance conditions) into the accelerator. A dedicated ion optical unit has been constructed and installed to focus the ion beam to the accelerator entrance. First measurements of the performance parameters will be presented. We analyzed several matrices and mass ranges of isotopes like a P-doped Si-wafer, natural galena (PbS) and the elements between Ga and As in several natural and synthetic matrices. [1] Purser et al. Surface and Interface Analysis 1(1), 1979, 12. [2] J. M. Anthony, D. J. Donahue, A. J. T. Jull, MRS Proceedings 69 (1986) 311-316. [3] S. Matteson, Mass Spectrom. Rev., 27 (2008) 470. [4] Ender et al. NIMB 123 (1997) 575. [5] Maden, PhD thesis, ETH Zurich 2003. [6] Fahey et al. Analytical Chemistry 88(14), 2016, 7145. [7] Akhmadaliev et al., NIMB 294 (2013) 5. [8] Rugel et al. NIMB 370 (2016) 94.

    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao ROBISarrow_drop_down
    image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
    ROBIS
    Lecture . 2017
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  • Authors: Aithal, Sreeramana; Aithal, Shubhrajyotsna;

    Well defined and futuristic education policy is essential for a country at school and college levels due to the reason that education leads to economic and social progress. India with the leadership of its current prime minister and an expert team with members of varied backgrounds has developed and planned to implement a new education policy during the next decade of the 21st century called Indian National Education Policy (NEP-2020). The aim, objectives, and details are well known to practitioners and the public. NEP-2020 is an innovative and futuristic proposal with both positive and negative aspects, framed with the objective to provide a quality school education and higher education to everyone with an expectation of holistic & research-oriented progress. This paper initially depicts an overview of NEP-2020, distinguish the strengths & weakness of the policy at higher education & research part, evaluation of the implementation suggestions given in the policy, identifying and analyzing possible generic strategies for implementation of NEP-2020 to fulfill its objectives based on focus group discussions. The paper also includes many predictive proposals on issues like developing quality universities & colleges, institutional restructuring & consolidation, more holistic & multidisciplinary education, optimal learning environment & student support, transforming the regulatory system of higher education, technology usage & integration, and online & digital education. Finally, some recommendations are made to implement the NEP-2020 effectively irrespective of various constraints. This article can be considered as a reference to the policy implementation teams of Govt of India.

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  • Authors: Sunde, Tafirenyika;

    This study examines the relationship between education expenditure and economic growth in Mauritius. The study employed the ARDL bounds testing methodology for the period 1976 to 2016. The study found that education expenditure Granger causes economic growth in Mauritius in the short run. In addition, the study also found that economic growth does not Granger cause education expenditure in Mauritius in the short run. However, in the long-run, the study found that there are long-run relationships between education expenditure and economic growth in both equations; and this means that an increase in either of the variables will eventually lead to an increase in the other variable. The study, therefore, found support for the hypothesis that investment in education raises economic growth. This means that Mauritius has the potential to benefit from further investments in education in the future.

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    Authors: Gross, Matthias;
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  • Authors: Tervala, Juha;

    Lucas (1987, 2003) finds that the welfare costs of business cycles are trivial, 0.008-0.05% of consumption in each period. I analyze the implications of hysteresis for the welfare costs of business cycles by extending the basic New Keynesian model with hysteresis. Hysteresis is defined as the negative effect of the negative, one-percentage point output gap on potential output. The net present value of the welfare cost of a recession in which the deviation of output from the trend is 3% is 0.6% of consumption without hysteresis. If the degree of hysteresis is 0.4, an empirical estimate for OECD countries, the welfare cost increases – by a factor of 121 – to 70%. The study of stabilization policy using New Keynesian models without hysteresis is pointless; the potential benefits of stabilization policy are notable only in the presence of hysteresis.

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  • Authors: Sankowski, Olga; Otto, Kevin N.; Moon, Seung Ki; Krause, Dieter;
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  • Authors: Kodila-Tedika, Oasis; Asongu, Simplice;

    We assess the correlations between tribalism and financial development in 123 countries using data averages from 2000-2010. The tribalism index is used to measure tribalism whereas financial development is measured from perspectives of financial intermediary and stock market developments. The long-term variable is stock market capitalisation while short-run indicators include: private and domestic credits. We find that tribalism is negatively correlated with financial development and the magnitude of negativity is higher for financial intermediary development relative to stock market development. The findings are particularly relevant to African and Middle Eastern countries where the scourge is most pronounced.

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  • Authors: Keita, Moussa;

    This manuscript provides an introduction to the econometric analysis. It is articulated around two parts structured on six chapters. The first part, devoted to the study of the linear model, consists of four chapters. The first presents some useful statistical concepts in Econometrics while the second and the third chapter is devoted to the study of simple linear model and multiple linear model. Concerning the fourth chapter, it focuses on the study of the generalized linear model (used in case of violation of certain standard assumptions of the linear model). In this first part, a particular emphasis is put on estimation methods such as ordinary least squares and maximum likelihood method. A broad discussion is also conducted on inference techniques and approaches to hypothesis testing. The second part of the work is devoted to the study of qualitative dependent variable models. In this part, two classes of models are considered: those of dichotomous dependent variable models (standard probit and logit model) and the models of polytomous dependent variable (ordered and unordered multinomial probit and logit models).

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  • Authors: Hou, Yang; Holmes, Mark;

    While dynamic optimal hedging is of major interest, it remains unclear as to whether incorporating higher moments of a return distribution leads to better hedging decisions. We examine the effects of introducing a bivariate skew-Student density function with static and autoregressive conditional skewness and kurtosis on dynamic minimum-variance hedging strategies. Static higher order moments improve reductions in variance and value at risk of hedged portfolios. The inclusion of dynamics through an autoregressive component extends these improvements further. These benefits avail for short and long hedging horizons, which is highlighted in the global financial crisis. The static and conditional higher order moments enhance the notion that the size and smoothness of hedge ratios positively relate to hedging effectiveness while volatility does the reverse. Improved effectiveness can be explained given an upgrade of size and smoothness and a downgrade of volatility of hedge ratios attributed to the dynamics of higher order moments.

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