Handling of Uncertainty in Life Cycle Inventory by Correlated Multivariate Lognormal Distributions: Application to the Design of Supply Chain Networks

In this work, we analyze the effect of incorporating life cycle inventory (LCI) uncertainty on the multi-objective optimization of chemical supply chains (SC) considering simultaneously their economic and environmental performance. To this end, we present a stochastic multi-scenario mixed-integer linear programming (MILP) coupled with a two-step transformation scenario generation algorithm with the unique feature of providing scenarios where the LCI random variables are correlated and each one of them has the desired lognormal marginal distribution. The environmental performance is quantified following life cycle assessment (LCA) principles, which are represented in the model formulation through standard algebraic equations. The capabilities of our approach are illustrated through a case study of a petrochemical supply chain. We show that the stochastic solution improves the economic performance of the SC in comparison with the deterministic one at any level of the environmental impact, and moreover the correlation among environmental burdens provides more realistic scenarios for the decision making process.

Through the mill: the life of a mill boy

by Al Pridy.

[Student essay on life's uncertainty] (fragment), undated

Folio-sized leaf containing a handwritten essay on life's uncertainty with an epitaph from English philosopher and scientist Francis Bacon (1561-1626): "He that to vain mortality does trust, / But limns the water, or but writes in dust." The remaining pages of the essay are missing.

Inside the living cell; some secrets of life.

1959

Extending working life in Belgium. CEPS Working Document No. 386, 22 November 2013

This report aims at understanding how persons aged 50 years and older are and can be integrated into the working society in Belgium. We are interested in how people in this age group can be induced to engage in various forms of employment and lifelong learning. Based on secondary literature, descriptive databases as well as interviews with experts and focus groups, we find that the discussion on active ageing in Belgium is well advanced with numerous contributions by academics, stakeholders, social partners, the public administration and interest groups. The wish to retire at 60 is widely shared, but at the same time the majority of Belgium’s elderly are able and would be willing to work under specific conditions. Therefore, we recommend that Belgium should invest in more flexible systems including a revision of the tax scheme, such as the part-time retirement system proposed by the insurance company Delta Lloyd. An equally relevant recommendation would be to ensure that public employment agencies, employers and agencies that provide training encourage all workers to work and learn regardless of their age.

The 'tribal areas' of the Caucasus: The North Caucasus - an enclave of 'alien civilisation' within the Russian Federation. OSW Study 34/2010

Militant Islam is currently the greatest threat to security and stability in the Russian part of the Caucasus. However, even though the armed Islamic underground is capable of organising terrorist attacks and carrying out actions of sabotage, it seems too weak to bring about any change in the Caucasus’s political status quo. Besides, militant Islam is merely a symptom (albeit the most radical and spectacular) of a much wider process, namely the widening civilisational gap between Russia and the North Caucasus, initiated by the collapse of the Soviet Union. The key elements of this process are as follows: the spontaneous re-Islamisation of social life and the dynamic growth of Islam's political influence; the de-Russification of the region; and the ongoing marginalisation of secular intellectuals. As a result, the North Caucasus, and principally Chechnya, Ingushetia and Dagestan, are turning into an enclave separated from the rest of the Russian Federation by a growing civilisational gap, and becoming increasingly different from the rest of Russia. This situation may recall the tribal areas of Pakistan inhabited by Pashtuns (FATA) along the Afghan border.

Regional Wage and Employment Responses to Market Potential in the EU. Bruges European Economic Research (BEER) Papers 3/November 2005

Recent theoretical work on economic geography emphasizes the interplay of transport costs and plant-level increasing returns. In these models, the spatial distribution of demand is a key determinant of economic outcomes. In one strand, it is argued that higher demand gives rise to a more than proportionate increase in production, a result known as the home market effect. Another strand emphasizes the effects of market sizes on factor prices. We highlight the theoretical connection between these two strands. Using data on 57 European regions, we show how wages and employment respond to differentials in what we call real market potential, a discounted sum of demands derived from the theory.

Life Cycle Assessment as a tool to promote sustainable Thermowood boards: a Portuguese case study

The present work aims to develop the Life Cycle Assessment study of thermo-modified Atlanticwood® pine boards based on real data provided by Santos & Santos Madeiras company. Atlanticwood® pine boards are used mainly for exterior decking and cladding facades of buildings. The LCA study is elaborated based on ISO 14040/44 standard and Product Category Rules for preparing an environmental product declaration for Construction Products and Construction Services. The inventory analysis and, subsequently, the impact analysis have been performed using the LCA software SimaPro8.0.4. The method chosen for impact assessment was EPD (2013) V1.01. The results show that more than ¾ of ‘Acidification’, ‘Eutrophication’, ‘Global warming’ and ‘Abiotic depletion’ caused by 1 m3 of Atlanticwood® pine boards production is due to energy consumption (electricity + gas + biomass). This was to be expected since the treatment is based on heat production and no chemicals are added during the heat treatment process.

Is socioeconomic position early in life associated with physical activity during adulthood following the accumulation of risk model with additive effects?

L'activité physique améliore la santé, mais seulement 4.8% des Canadiens atteignent le niveau recommandé. La position socio-économique est un des déterminants de l'activité physique les plus importants. Elle est associée à l’activité physique de manière transversale à l’adolescence et à l’âge adulte. Cette thèse a tenté de déterminer s'il y a une association à long terme entre la position socio-économique au début du parcours de vie et l’activité physique à l’âge adulte. S'il y en avait une, un deuxième objectif était de déterminer quel modèle théorique en épidémiologie des parcours de vie décrivait le mieux sa forme. Cette thèse comprend trois articles: une recension systématique et deux recherches originales. Dans la recension systématique, des recherches ont été faites dans Medline et EMBASE pour trouver les études ayant mesuré la position socio-économique avant l'âge de 18 ans et l'activité physique à ≥18 ans. Dans les deux recherches originales, la modélisation par équations structurelles a été utilisée pour comparer trois modèles alternatifs en épidémiologie des parcours de vie: le modèle d’accumulation de risque avec effets additifs, le modèle d’accumulation de risque avec effet déclenché et le modèle de période critique. Ces modèles ont été comparés dans deux cohortes prospectives représentatives à l'échelle nationale: la 1970 British birth cohort (n=16,571; première recherche) et l’Enquête longitudinale nationale sur les enfants et les jeunes (n=16,903; deuxième recherche). Dans la recension systématique, 10 619 articles ont été passés en revue par deux chercheurs indépendants et 42 ont été retenus. Pour le résultat «activité physique» (tous types et mesures confondus), une association significative avec la position socio-économique durant l’enfance fut trouvée dans 26/42 études (61,9%). Quand seulement l’activité physique durant les loisirs a été considérée, une association significative fut trouvée dans 21/31 études (67,7%). Dans un sous-échantillon de 21 études ayant une méthodologie plus forte, les proportions d’études ayant trouvé une association furent plus hautes : 15/21 (71,4%) pour tous les types et toutes les mesures d’activité physique et 12/15 (80%) pour l’activité physique de loisir seulement. Dans notre première recherche originale sur les données de la British birth cohort, pour la classe sociale, nous avons trouvé que le modèle d’accumulation de risque avec effets additifs s’est ajusté le mieux chez les hommes et les femmes pour l’activité physique de loisir, au travail et durant les transports. Dans notre deuxième recherche originale sur les données canadiennes sur l'activité physique de loisir, nous avons trouvé que chez les hommes, le modèle de période critique s’est ajusté le mieux aux données pour le niveau d’éducation et le revenu, alors que chez les femmes, le modèle d’accumulation de risque avec effets additifs s’est ajusté le mieux pour le revenu, tandis que le niveau d’éducation ne s’est ajusté à aucun des modèles testés. En conclusion, notre recension systématique indique que la position socio-économique au début du parcours de vie est associée à la pratique d'activité physique à l'âge adulte. Les résultats de nos deux recherches originales suggèrent un patron d’associations le mieux représenté par le modèle d’accumulation de risque avec effets additifs.

The story of the diamond necklace, told in detail for the first time, by the aid of contemporary memoires, original letters, and official and other documents; and comprising a sketch of the life of the Countess de la Motte, pretended confidant of Marie-Antoinette, with particulars of the careers of the other actors in the remarkable drama.

"Authorities referred to in this work": p.ix-xii.

Twenty-five years of health progress; a study of the mortality experience among the industrial policyholders of the Metropolitan Life Insurance Company 1911 to 1935,

Mode of access: Internet.