Revenue management in the airline industry : problems and solutions

Trial lecture held 23 November 2012 before the defence for the PhD in Logistics at Molde University College - Specialized University in Logistic

Impacts of Covid-19 on Norwegian salmon exports: A firm-level analysis

A rapidly growing literature investigates how the recent Covid-19 pandemic has affected international seafood trade along multiple dimensions, creating opportunities as well as challenges. This suggests that many of the impacts of the Covid measures are subtle and require disaggregated data to allow the impacts in different supply chains to be teased out. In aggregate, Norwegian salmon exports have not been significantly impacted by Covid-related measures. Using firm-level data to all export destinations to examine the effects of lockdowns in different destination countries in 2020, we show that the Covid-related lockdown measures significantly impacted trade patterns for four product forms of salmon. The results also illustrate how the Covid measures create opportunities, as increased stringency of the measures increased trade for two of the product forms. We also find significant differences among firms' responses, with large firms with larger trade networks reacting more strongly to the Covid measures. The limited overall impacts and the significant dynamics at the firm level clearly show the resiliency of the salmon supply chains.publishedVersio

Conjuntos de Bases Gaussianas Correlacionados não Relativísticos e Relativísticos: Aplicação em Cálculos de Constantes Espectroscópicas e Propriedades Elétricas e Magnéticas Moleculares.

Made available in DSpace on 2018-08-01T21:59:53Z (GMT). No. of bitstreams: 1 tese_3656_.pdf: 721125 bytes, checksum: 976cdb5d44c7bb950374c664ed54d077 (MD5) Previous issue date: 2009-12-18Conjunto de bases contraído de qualidade dupla zeta (DZ) para os átomos de K até Kr é apresentado. Ele foi determinado a partir de um conjunto de bases totalmente otimizado de funções tipo Gaussianas primitivas geradas em cálculos Hartree-Fock atômicos. Conjuntos de funções de polarização Gaussianas otimizadas ao nível de teoria de perturbação de Møller-Plesset de segunda ordem foram adicionados ao conjunto de bases DZ. Isto estende um trabalho anterior de conjunto de bases DZ de contração segmentada para os átomos H-Ar. A partir deste conjunto, usando os funcionais não-híbrido BP86 e o híbrido B3LYP, energia de dissociação, parâmetros geométricos, freqüência vibracional harmônica e momento de dipolo elétrico de um conjunto de moléculas foram calculados e comparados com resultados obtidos com outros conjuntos de bases e com dados experimentais reportados na literatura. Em adição, deslocamentos químicos de ressonância magnética nuclear do 57Fe e 77Se em Fe(C5H5)2, H2Se e CSe2 foram calculados usando a teoria do funcional da densidade e orbitais atômicos gaugeincluding e, então, comparados com valores experimentais e teóricos previamente publicados na literatura. Exceto para deslocamento químico, verifica-se que nossos resultados dão a melhor concordância com valores de referência e experimentais. Conjuntos de bases Gaussianas aumentados de qualidades dupla e tripla zeta de valência mais funções de polarização para os átomos de K e de Sc até Zn são também apresentados. Eles foram gerados a partir dos conjuntos não aumentados para todos elétrons pela adição de funções difusas (simetrias s, p, d, f, g), que foram otimizadas para os estados fundamentais dos ânions. A partir desses conjuntos, cálculos Hartree-Fock, de teorias de perturbação Mφller-Plesset de segunda ordem e do funcional da densidade de momento de dipolo elétrico e polarizabilidade de dipolo de um conjunto de moléculas foram realizados. Finalmente, conjuntos de bases Gaussianas contraídas Douglas-Kroll-Hess (DKH) de qualidades dupla, tripla e quádrupla zeta de valência mais funções de polarização (XZP, X=D, T e Q, respectivamente) para os átomos de H, Li, Be, Na e Mg e DZP e TZP para K-Zn são apresentados. Eles foram determinados a partir dos conjuntos de bases não relativísticos correspondentes gerados previamente por Jorge e colaboradores. Nós recontraímos os conjuntos de bases XZP originais, isto é, os valores dos coeficientes de contração foram reotimizados usando o Hamiltoniano DKH relativístico. O efeito escalar relativístico ao nível de teoria Coupled-Cluster na energia de ionização de alguns átomos e energia de dissociação e parâmetros geométricos de um conjunto de moléculas é discutido. Todos resultados obtidos neste trabalho foram comparados com valores teóricos e experimentais disponíveis na literatura

Impacts of Covid-19 on Norwegian Salmon exports: A firm-level analysis

A rapidly growing literature investigates how the recent Covid-19 pandemic has affected international seafood trade along multiple dimensions, creating opportunities as well as challenges. This suggests that many of the impacts of the Covid measures are subtle and require disaggregated data to allow the impacts in different supply chains to be teased out. In aggregate, Norwegian salmon exports have not been significantly impacted by Covid-related measures. Using firm-level data to all export destinations to examine the effects of lockdowns in different destination countries in 2020, we show that the Covid-related lockdown measures significantly impacted trade patterns for four product forms of salmon. The results also illustrate how the Covid measures create opportunities, as increased stringency of the measures increased trade for two of the product forms. We also find significant differences among firms' responses, with large firms with larger trade networks reacting more strongly to the Covid measures. The limited overall impacts and the significant dynamics at the firm level clearly show the resiliency of the salmon supply chains

Impacts of Covid-19 on Norwegian salmon exports: A firm-level analysis

A rapidly growing literature investigates how the recent Covid-19 pandemic has affected international seafood trade along multiple dimensions, creating opportunities as well as challenges. This suggests that many of the impacts of the Covid measures are subtle and require disaggregated data to allow the impacts in different supply chains to be teased out. In aggregate, Norwegian salmon exports have not been significantly impacted by Covid-related measures. Using firm-level data to all export destinations to examine the effects of lockdowns in different destination countries in 2020, we show that the Covid-related lockdown measures significantly impacted trade patterns for four product forms of salmon. The results also illustrate how the Covid measures create opportunities, as increased stringency of the measures increased trade for two of the product forms. We also find significant differences among firms' responses, with large firms with larger trade networks reacting more strongly to the Covid measures. The limited overall impacts and the significant dynamics at the firm level clearly show the resiliency of the salmon supply chains

Impacts of Covid-19 on Norwegian salmon exports: A firm-level analysis

A rapidly growing literature investigates how the recent Covid-19 pandemic has affected international seafood trade along multiple dimensions, creating opportunities as well as challenges. This suggests that many of the impacts of the Covid measures are subtle and require disaggregated data to allow the impacts in different supply chains to be teased out. In aggregate, Norwegian salmon exports have not been significantly impacted by Covid-related measures. Using firm-level data to all export destinations to examine the effects of lockdowns in different destination countries in 2020, we show that the Covid-related lockdown measures significantly impacted trade patterns for four product forms of salmon. The results also illustrate how the Covid measures create opportunities, as increased stringency of the measures increased trade for two of the product forms. We also find significant differences among firms' responses, with large firms with larger trade networks reacting more strongly to the Covid measures. The limited overall impacts and the significant dynamics at the firm level clearly show the resiliency of the salmon supply chains

Impacts of Covid-19 on Norwegian salmon exports: A firm-level analysis

A rapidly growing literature investigates how the recent Covid-19 pandemic has affected international seafood trade along multiple dimensions, creating opportunities as well as challenges. This suggests that many of the impacts of the Covid measures are subtle and require disaggregated data to allow the impacts in different supply chains to be teased out. In aggregate, Norwegian salmon exports have not been significantly impacted by Covid-related measures. Using firm-level data to all export destinations to examine the effects of lockdowns in different destination countries in 2020, we show that the Covid-related lockdown measures significantly impacted trade patterns for four product forms of salmon. The results also illustrate how the Covid measures create opportunities, as increased stringency of the measures increased trade for two of the product forms. We also find significant differences among firms' responses, with large firms with larger trade networks reacting more strongly to the Covid measures. The limited overall impacts and the significant dynamics at the firm level clearly show the resiliency of the salmon supply chains