Jorge Dreher

Followers

Following

Co-authors

Public Views

International technical assistant and senior advisor in the field of water resources management, sanitation and hygiene, with more than 35 years of professional experience of witch 18 years as an expert and project manager in development cooperation projects, in different countries, including the ACP groups (Mozambique, Cape Verde, Rwanda, Burundi, Ethiopia and Zimbabwe), South America, Asia, and Europe.

less

Andrej Dujella

University of Zagreb

Hemin Koyi

Uppsala University

Jana Javornik

University of East London

Graham Martin

University of Leicester

Gwen Robbins Schug

University of North Carolina at Greensboro

Gabriel Gutierrez-Alonso

University of Salamanca

John Sutton

Macquarie University

Eros Carvalho

Universidade Federal do Rio Grande do Sul

Kevin Arbuckle

Swansea University

Jesper Hoffmeyer

University of Copenhagen

Uploads

Papers by Jorge Dreher

Ground water management system in Vienna—An evaluation after three years of operation

Artificial Recharge of Groundwater, 2020

Grundwassermanagement im städtischen Bereich am Beispiel 2. und 20. Bezirk in Wien

Österreichische Wasser- und Abfallwirtschaft, 2008

o r i g i n a l a r b e i t grundwassermanagement im städtischen bereich am beispiel 2. und 20. b... more o r i g i n a l a r b e i t grundwassermanagement im städtischen bereich am beispiel 2. und 20. bezirk in Wien Urban groundwater management-2nd and 20th Districts of Vienna city as examples von J. e. DreHer und a. gUnatilaKa Kurzfassung/summary Das Grundwasserregime im 2. und 20. Wiener Gemeindebezirk hängt hauptsächlich vom Wasserspiegel der Donau und des Donaukanals ab. Ohne Gegenmaßnahmen würde sich die Grundwasserströmung nach Errichtung des Kraftwerkes Freudenau bei Wien aufgrund der notwendigen Dichtungsmaßnahmen entlang des rechten Donauufers drastisch ändern. Das Grundwasser würde hinter der Dichtwand stagnieren, was zu unerwünschten Veränderungen der Wasserqualität führen könnte. Um das ursprüngliche Grundwasserregime dieses Gebiets möglichst unverändert zu erhalten, wurde ein vollautomatisches Grundwasserbewirtschaftungssystem errichtet, das von kontinuierlich arbeitenden Quantitäts-und Qualitätsüberwachungsstationen an der Donau und im Grundwassergebiet gesteuert wird. Dieser Beitrag präsentiert eine Analyse des Betriebs des installierten Grundwasserbewirtschaftungssystems und der damit zusammenhängenden Veränderungen während der letzten 10 Jahre. The groundwater regime in 2nd and 20th metropolitan districts of Vienna mainly depends on the water level of the River Danube and the Danube canal. Due to construction of the power plant on the Danube near Vienna (at Freudenau), the groundwater flow would change drastically resulting in stagnation of water in the proximity of the right river bank, leading to undesirable changes in the groundwater quality. In order to keep the groundwater regime in a predefined state, a fully automated groundwater management system was installed, assisted by real-time water quality and water quantity measuring stations established for monitoring of the Danube and the groundwater wells in the management area. This paper presents an analysis of the performance of the installed system and associated changes during the past 10 years.

Download

Groundwater/Surface Water Ecotones: Biological and Hydrological Interactions and Management Options

Estuaries, 1998

Download

A groundwater ecosystem study in the "Lobau" wetland (Vienna), reflecting the interactions between surface water and groundwater

River Systems, 1996

Hydrological Services: The Need for the Integration of Space-Based Information

by Gerhard Triebnig, E. Zeller, Helmut Rott, and Jorge Dreher

Enormous socio-economic and environmental requirements are forcing the water industry towards pro... more Enormous socio-economic and environmental requirements are forcing the water industry towards proper and more integrated management and efficient operation of water resources. This calls for more qualified and sustainable information systems and also for tools to assist them in the management of information. This paper discusses two different hydrological business cases, which have been investigated in the framework of an

Use of real-time data in environmental monitoring: current practices

Water Science and Technology, 2003

Water quality monitoring in Europe, especially in transboundary water courses has made steady pro... more Water quality monitoring in Europe, especially in transboundary water courses has made steady progress during the last decades through establishment of international commissions. The main activities of these commissions include protection and management of the catchment, sustainable use of the river and establishment of Accident Emergency Warning Systems (AEWS). The latter could be effectively accomplished only through real-time monitoring. Concurrently real-time data have been found important for the monitoring of potable water intake points, wastewater treatment plants, estuaries and in aquaculture. With the recognition of the diversified demand, there are a number of questions to be answered such as: (1) are we satisfied with the existing monitoring systems? (2) is standardisation of the measuring instruments a necessity? (3) do we have foolproof systems for data capture and transmission? (4) are there adequate procedures to analyse vast amount of data generated? We have to answe...

River basin management strategies for IndonesiaExtension of the Brantas model to Central Java

… Water Association Conference on 'Water & …, 2001

Already a successful integrated River Basin Management (RBM) program has been implemented in the ... more Already a successful integrated River Basin Management (RBM) program has been implemented in the Brantas River basin which is the largest river catchment in East Java. In 1990, a RBM organisation was formed (Jasa Tirta, Public Corporation) for the management of the river basin which provided the institutional framework for: (a) dealing with water resources according to economic principles, (b)

Hydrological Services: The Need for the Integration of Space-Based Information

To determine whether there are differences in measures of cognitive function between second and t... more To determine whether there are differences in measures of cognitive function between second and third trimester pregnant women compared to non-pregnant controls. This prospective study comprised 40 pregnant and 40 non-pregnant women, 20-40 years old, native-Hebrew speakers who were recruited from the outpatient clinics during a period of nearly 2 years. The patients underwent cognitive and affective evaluation. The performance on the three following tests: difficult and total items of Verbal Paired Associates, the Digit Span-forward and the Naming Objects and Fingers test scores were significantly better among non-pregnant women. All the other test results were similar between the two groups, including the depression scores. On multivariate linear regression analysis, after adjusting for age and years of education , Verbal Paired Associates total score (p = 0.04), and Naming Objects and Fingers (p = 0.01) remained significantly associated with pregnancy, but not Digit Span (p = 0.09). Our study demonstrates an impairment in memory among pregnant women. Furthermore language skills, particularly naming, were also impaired, a finding which has not been previously described. Normal pregnancy is characterized by elevated levels of several plasma steroid hormones 1-4 , which are known to cross the blood-brain barrier 5. Estrogen has a role in neuroendocrine regulation and reproductive behaviors. Furthermore, it has a neuroprotective effect on degenerative disease or injury 6. Studies based upon animal models reported better spatial learning and memory during pregnancy in rats 7,8. Human studies report that hormonal changes affect cognitive performance. Therefore, the change in hormone levels during pregnancy provides a unique opportunity to study their effect on cognitive functions 9-20. Furthermore the latest literature report structural brain changes during pregnancy and early postpartum which may confer a protective effect against the aging process and might be related to better cognitive outcomes persisting in older age 21,22. The current literature related to cognitive changes during pregnancy is controversial. Most studies show a deficit in cognitive functioning during pregnancy 12,15,20,23-28 , while others report an improved performance 29 , or no effect at all 9. Poor concentration, memory deficit, disorientation and executive function impairment were all reported in previous studies. Nevertheless most data report on memory and concentration decline during pregnancy, while data regarding language abilities are scarce. This study was designed to investigate differences in measures of cognitive function related to attention, memory, and learning. We also aimed to add information regarding language abilities of second and third trimester pregnant women and non-pregnant controls. For this purpose we used a complex structured cognitive battery including multiple tasks for multiple cognitive functions, in order to detect possible changes in other functions as well. Materials and methods This was a prospective cohort study. The study comprised 80 participants recruited from our obstetric outpatient clinic, and included 40 pregnant and 40 non-pregnant women. Inclusion criteria for all the women recruited: age between 20 and 40 years old and native Hebrew speakers, born and educated in Israel. The majority were of Jewish origin (there were two Arab Muslim women in the pregnant group and three in the non-pregnant group). Exclusion criteria included a history of learning and/or attention and/or hyperactivity disorder (ADHD), any psychiatric disorder, brain injury, epilepsy, multiple sclerosis, mental retardation or dementia, any other neurological disorder known to be accompanied by cognitive decline, and any history or current substance abuse. Pregnant participants were in the second or third trimester. Non-pregnant women came to the obstetric clinic for pre pregnancy consultation and were not recruited if they had given birth during the preceding year.

Download

Dissolved organic carbon dynamics in a groundwater environment

SIL Proceedings, 1922-2010, 1994

China-Pakistan economic corridor is one of flagship projects in "the Belt and Road Initiatives", ... more China-Pakistan economic corridor is one of flagship projects in "the Belt and Road Initiatives", it not only will provide energy channels besides the Strait of Malacca but also will greatly shorten the oil transport distance (85%). However, the frequent tribal conflicts and terrorist attacks in Pakistan will threaten the safety of China-Pakistan economic corridor. Based on the classification of the violence in Pakistan, the paper tries to find the source of the conflicts from the economy and politics. This research finds that: the better political environment and more harmonious race relations can greatly suppress the outbreak of the conflict; Unemployment is positively related to the number of terrorist attacks; Economics plays an important role in all kinds of conflicts. Based on the research, the paper offers some advice to reduce the conflict.

Download

A Hydrological Monitoring, Forecasting and Warning System for Poland

One of the main issues of the Emergency Flood Recovery Project in Poland is to develop a Hydrolog... more One of the main issues of the Emergency Flood Recovery Project in Poland is to develop a Hydrological Monitoring, Forecasting and Warning System for the entire country, which will be implemented subsequently by the Institute of Meteorology and Water Management (IMGW) at the Headquarter in Warsaw, and regional branch offices. The main tasks are to provide effective management of the hydro-meteorological monitoring network, promote uniformity of data carrying, streamline and formalize the access to the information used for flood forecast preparation, digital presentation of current meteoro- logical conditions and forecasts. The System of Hydrology (SH), which is going to be developed for the IMGW, is presented in this paper.

Download

Ground water management system in Vienna—An evaluation after three years of operation

Artificial Recharge of Groundwater, 2020

Grundwassermanagement im städtischen Bereich am Beispiel 2. und 20. Bezirk in Wien

Österreichische Wasser- und Abfallwirtschaft, 2008

Download

Groundwater/Surface Water Ecotones: Biological and Hydrological Interactions and Management Options

Estuaries, 1998

Download

A groundwater ecosystem study in the "Lobau" wetland (Vienna), reflecting the interactions between surface water and groundwater

River Systems, 1996

Hydrological Services: The Need for the Integration of Space-Based Information