scholarly journals Wpływ inwestycji i modernizacji portów morskich w Gdańsku i Gdyni na zmiany struktury przeładunków portowych = The impact of new developments and modernisation at the Polish ports of Gdańsk and Gdynia on changes in port transshipments

2021 ◽  
Vol 93 (2) ◽  
pp. 269-290
Author(s):  
Tadeusz Palmowski ◽  
Jan A. Wendt
Keyword(s):  

Dzisiejsze porty, jako węzły komunikacyjne łączące transport morski z lądowym, muszą skutecznie konkurować na rynku. Porty, szczególnie te ważne dla gospodarek swoich krajów, ewoluują w kierunku organizmów tworzących wartość dodaną, kluczowych węzłów w globalnych łańcuchach dostaw, w których infrastruktura i suprastruktura są elementami jednolitego systemu logistycznego. System ten koncentruje się na zapewnieniu wysokiej efektywności i dostępności dla coraz większych statków oraz minimalizacji ryzyka kongestii. Celem podjętej w pracy analizy jest przedstawienie współczesnych procesów inwestycyjnych i modernizacyjnych w portach morskich w Gdańsku i Gdyni oraz ich możliwego wpływu na zmiany struktury przeładunków w portach w latach 2009‑2019. W opracowaniu wykorzystano dane obrazujące wielkość przeładunków w portach. Analiza zmian wielkości potoków ładunkowych i ich struktury wskazuje na nowe powiązania w strukturze kierunkowej, które mogą wskazywać na nowe regiony (kontynenty lub państwa), do których wysyłane są ładunki z obydwu portów. Przedstawione dane wskazują na relację pomiędzy podjętymi i wykonanymi inwestycjami w infrastrukturze portowej a wielkością przeładunków oraz ich strukturą, prawie w każdej z badanych kategorii ładunków i kontenerów.

2017 ◽  
Vol 21 (3) ◽  
pp. 1651-1668 ◽  
Author(s):  
Ana I. Requena ◽  
Fateh Chebana ◽  
Taha B. M. J. Ouarda

Abstract. Some regional procedures to estimate hydrological quantiles at ungauged sites, such as the index-flood method, require the delineation of homogeneous regions as a basic step for their application. The homogeneity of these delineated regions is usually tested providing a yes/no decision. However, complementary measures that are able to quantify the degree of heterogeneity of a region are needed to compare regions, evaluate the impact of particular sites, and rank the performance of different delineating methods. Well-known existing heterogeneity measures are not well-defined for ranking regions, as they entail drawbacks such as assuming a given probability distribution, providing negative values and being affected by the region size. Therefore, a framework for defining and assessing desirable properties of a heterogeneity measure in the regional hydrological context is needed. In the present study, such a framework is proposed through a four-step procedure based on Monte Carlo simulations. Several heterogeneity measures, some of which commonly known and others which are derived from recent approaches or adapted from other fields, are presented and developed to be assessed. The assumption-free Gini index applied on the at-site L-variation coefficient (L-CV) over a region led to the best results. The measure of the percentage of sites for which the regional L-CV is outside the confidence interval of the at-site L-CV is also found to be relevant, as it leads to more stable results regardless of the regional L-CV value. An illustrative application is also presented for didactical purposes, through which the subjectivity of commonly used criteria to assess the performance of different delineation methods is underlined.


Author(s):  
Marta Wójcik-Czerwińska

Abstract      Stephanie LeMenager, literature professor and author of Living Oil: Petroleum Culture in the American Century (2014), opens her study of America’s relationship with the resource by asserting that reports of its death have been exaggerated. Oil not only drive American modernity, but also inspire writers to explore it, in both fiction and non-fiction. While “petrofiction,” fiction with oil at its core, has received critical attention, certain new developments in non-fictional writing centred on petroleum call for more consideration. This article, therefore, probes representations of oil in contemporary American and Canadian non-fiction. It analyses William L. Fox’s essay “A Pipeline Runs through It” (2011), which is based on a trip along the Trans-Alaska Pipeline, and Andrew Nikiforuk’s article “Canadian Democracy: Death by Pipeline” (2012), which discusses the impact of the proposed Northern Gateway Pipeline from Alberta to British Columbia. Adopting an ecocritical perspective, the article puts to the test LeMenager’s thesis that journalists are “expert plotters against oil” and “conservationists.” To this aim, it analyses the specific means by which the two journalists expose the presence of oil, and highlight its micro and macro implications, from its impact on the landscape and the lives of people whose livelihoods and cultures have been shaped by the natural world, to that on democracy and our minds. Resumen      Stephanie LeMenager, profesora de literatura y autora de Living Oil: Petroleum Culture in the American Century (2014), abre su estudio sobre la relación de los Estados Unidos con el petróleo como recurso natural, mediante la afirmación de que los informes de su muerte han sido exagerados. El petróleo no sólo impulsa la modernidad americana sino también inspira a los escritores para explorarlo tanto en la ficción como en la no-ficción. Mientras que la “petroficción,” ficción centrada en el petróleo, ha sido objeto de atención crítica, algunos nuevos desarrollos en la escritura de no-ficción centrada en el petróleo causan mayor interés. Este artículo trata de representar al petróleo en la no-ficción contemporánea americana y canadiense. Analiza el ensayo de William L. Fox “A Pipeline Runs through It” (2011), basado en un viaje a lo largo del sistema de oleoducto Trans-Alaska, y el artículo de Andrew Nikiforuk “Canadian Democracy: Death by Pipeline” (2012), discutiendo el impacto de la propuesta del oleoducto del Norte desde Alberta hasta la Columbia Británica. Adoptando una perspectiva ecocrítica, el artículo pone a prueba las tesis de LeMenager de que los periodistas como “expertos conspiradores contra el petróleo” y “conservacionistas”. Para ello, analiza los medios específicos por los cuales los dos periodistas exponen la presencia de petróleo y destacan sus macro y micro implicaciones, desde su impacto en el paisaje y en las vidas de las personas cuyos medios de vida y culturas han sido moldeadas por el mundo natural, hasta su impacto en la democracia y en nuestras mentes.


2020 ◽  
Vol 24 (5) ◽  
pp. 2791-2815
Author(s):  
Christian Onof ◽  
Li-Pen Wang

Abstract. The use of Poisson cluster processes to model rainfall time series at a range of scales now has a history of more than 30 years. Among them, the randomised (also called modified) Bartlett–Lewis model (RBL1) is particularly popular, while a refinement of this model was proposed recently (RBL2; Kaczmarska et al., 2014). Fitting such models essentially relies upon minimising the difference between theoretical statistics of the rainfall signal and their observed estimates. The first statistics are obtained using closed form analytical expressions for statistics of the orders 1 to 3 of the rainfall depths, as well as useful approximations of the wet–dry structure properties. The second are standard estimates of these statistics for each month of the data. This paper discusses two issues that are important for the optimal model fitting of RBL1 and RBL2. The first issue is that, when revisiting the derivation of the analytical expressions for the rainfall depth moments, it appears that the space of possible parameters is wider than has been assumed in past papers. The second issue is that care must be exerted in the way monthly statistics are estimated from the data. The impact of these two issues upon both models, in particular upon the estimation of extreme rainfall depths at hourly and sub-hourly timescales, is examined using 69 years of 5 min and 105 years of 10 min rainfall data from Bochum (Germany) and Uccle (Belgium), respectively.


Author(s):  
Christopher A. Mattson ◽  
Amy E. Wood ◽  
John Renouard

This paper presents a case study in engineering for global development. It introduces the Village Drill, which is an engineered product that has now — five years after its introduction to the market — enabled hundreds of thousands of people across 15 countries and three continents to have access to clean water. The Village Drill creates a 15 cm (6 inch) borehole as deep as 76 m (250 feet) to reach groundwater suitable for drinking. It was designed and developed by the authors together with a team of talented individuals from various disciplines. The case study presents facts and figures for the actual development and sustaining scenario and are unaltered for the purpose of publication. This approach provides the reader with a realistic view of the development time, testing conditions, fundraising, and the work needed to sustain the drill through five years of sales and distribution. The purpose of the case study is to provide sufficient and frank data about a real project so as to promote discussion, critique, and other evaluations that will lead to new developments that inspire and inform successful engineering for global development. As part of the case, the paper describes six fundamental items related to the endeavor; the product, the customer, the impact, the manufacturing, the delivery, and the revenue model of the drill.


2019 ◽  
Vol 75 (1) ◽  
Author(s):  
Gift Masengwe ◽  
Francisca H. Chimhanda

This article evaluates the impact of transformation in the Church of Christ in Zimbabwe (COCZ) over the past 10 years. The study is guided by the following questions: What does it mean to be COCZ in the Zimbabwean society? What is the COCZ mission that empowers it to play a meaningful role in nation building? The critical analysis is observed from the Christian education (CE) pedagogy. This raises questions on the historical foundations, transformation tenets and future plans and guidelines towards authentic transformation. Transformation could be affected by new developments, and thus participants need to be guided accordingly. The article gives a critical analysis of the COCZ journey experiences using a dialogical approach to CE. This study presupposes that lack of CE is a limiting factor to the transformation process in the church. This study is an interdisciplinary study that combines missiology, African ecclesiology and Christian theology. The study was conducted using surveys, observations and interviews among leaders and members of the COCZ.


2007 ◽  
Vol 55 (4) ◽  
pp. 85-91 ◽  
Author(s):  
F.A. Memon ◽  
A. Fidar ◽  
K. Littlewood ◽  
D. Butler ◽  
C. Makropoulos ◽  
...  

This paper describes a full-scale physical model and its application to investigate the effectiveness/performance of small-bore sewers for a range of operational and design parameters. The implementation methodology involves observing the movement of synthetic gross solids in three small bore sewers (150, 100 and 75 mm diameter) for different volumes of simulated flush waves and gradients. The simulated flush waves were generated, using an automated wave sequencer, for three different flush volumes (3, 4.5 and 6 litres). To investigate the impact of solid shape factor, a number of tests were carried out using synthetic solids in combination with toilet tissue paper. In total, more than 1,000 tests were performed for different operational and design parameter combinations. Results obtained to date have confirmed earlier studies, particularly with respect to the role of flush volume in solids transport, and identified the impact of gradient variation and its significance particularly in small-bore sewers receiving low flush volume. Results from the physical model application exercise will be used to propose new design guidelines for wastewater collection systems with specific consideration to new developments and inform the decision support system, currently being developed as part of a research project on water cycle management for new developments (WaND).


2000 ◽  
Vol 38 (2) ◽  
pp. 287-331 ◽  
Author(s):  
Arvind Panagariya

This paper begins by systematically developing the “static” theory of preferential trade areas (PTAs) and showing that neither a large volume of initial intra-union trade nor geographical proximity can serve as a guide to welfare enhancing PTAs. The paper then discusses the modern literature addressing welfare effects of simultaneous division of the world into many PTAs, the impact of the decision to form a PTA on external tariffs and the “dynamic” time-path question of whether PTAs are building blocks or stumbling blocks towards multilateral freeing of trade. A final section discusses key theoretical considerations in the empirical evaluation of PTAs.


2021 ◽  

The authors will present a comprehensive account of the neurological aspects of SARS-CoV-2 infection. The aim is to provide a practical clinical book which will serve as a guide for clinicians from all specialties involved in the management of COVID-19 patients. The authors share the extensive clinical experience gained in major hospitals in Lombardy, the first European region to face the COVID-19 emergency in 2020. All are recognized international experts in their respective fields and have been involved in the management of COVID-19 cases from the very beginning of the Italian SARS-CoV-2 outbreak. The text begins with a description of pathobiological and pathophysiological aspects related to the involvement of the nervous system, moving on to the discussion of the neurological complications observed in COVID-19 patients; these range from central to peripheral symptoms, and can occur in the acute or post-acute phases of the disease. Further topics are: neuropathology, seizures and EEG, neuroimaging, delirium, encephalomyelitis, stroke, psychopathology and psychiatry, neuropsychology and cognitive impairment, neuromuscu-lar disorders, and the impact of COVID-19 on other pre-existing neurological disorders. In addi-tion, the book will discuss the new developments in teleneurology approaches, which have been a direct response to the ongoing pandemic. Finally, the possible neurological complications of the COVID-19 vaccines and the neurological complications in children will be considered.Each chapter will present a critical review of the existing literature concerning the specific subject matter, followed by practical clinical recommendations, as well as personal considerations based on the experience gained by each author during the course of the COVID-19 pandemic. Neurology of COVID-19 will be an original and innovative reference book for clinicians of all the specialties involved in the management of patients with SARS-CoV-2 infection


Sign in / Sign up

Export Citation Format

Share Document