22 research outputs found
Olosuhdehallintaohjeen kehittäminen
No full textTämä opinnäytetyö on toteutettu yhteistyössä RKM Group Oy:n kanssa. Olosuhdehallintaan pyritään kiinnittämään yhä enemmän huomiota rakennustyömaalla.Oikein toteutetulla olosuhdehallinnalla pystytään vaikuttamaan rakentamisen aikatauluihin sekä kustannuksiin. Opinnäytetyön kirjoittaja on työskennellyt olosuhdehallinnan tehtävissä ja huomannut kuinka tärkeässä osassa laadukas olosuhdehallinta on työmaalla.
Opinnäytetyö käsittelee olosuhdehallintaan vaikuttavia elementtejä kuten koneellinen kuivaus, lämmitys ja ilmavaihto. Työssä käsitellään myös kosteusmittausta. Työssä käytettiin avuksi alan kirjallisuutta, ohjeistuksia sekä toimiviksi koettuja menetelmiä.
Työn aikana huomattiin, että rakenteiden kuivumiseen vaikuttaviin seikkoihin ei kiinnitetä työmaalla tarpeeksi huomiota. Olosuhdehallinnan toteutuminen työmaalla on yhteistyötä ja sen toteutuminen tulee suunnitella tarkasti.
Työn tavoitteena oli tehdä yksinkertainen ja helposti ymmärrettävä olosuhdehallintaohje, johon työnjohto voi tutustua rakentamisen eri vaiheissa. Ohje toimiimyös työmaaperehdytyksen liitteenä, ja sitä voidaan käyttää myös halli-, toimitila sekä pientalotyömailla. Ohjeessa esitetään olosuhdehallinnan vaiheet runko- ja sisävalmistusvaiheessa.This thesis was done in cooperation whit RKM Group Oy. This thesis deals whit condition management on generally. Condition management is increasing attention on construction sites. Properly executed, it can influence schedules and cost of the construction. The author of this thesis has worked years in condition management in construction yards, and he has noticed that how important quality executed condition management is in building site.
Thesis deals whit elements that influence condition management, such as mechanical drying, heating and ventilation. Thesis also deals moisture measurements. Literature, guidelines and proven methods were used to help write this thesis.
During the work, it was noticed that the issues affecting the drying of structures, were not given enough attention in various building sites. The implementation of condition management at the construction site is co-operation and its implementation must be carefully planned.
Main goal of this thesis was to create a simple reading guide, that foremans in the construction sites can read at various steps of the construction. This guide can also use in site orientation and guide can be also use in halls-, office and detach house sites. Guide presents the stages of condition management in the frame-, and interior fabrication stages
Some applications of the Reproducing Kernel Method (RKM) and the Group Preserving Scheme (GPS)
No full textSpatial and temporal trends in bed elevation and surface grain size in the upper Rhine delta and Niederrhein
No full textThis study analyzes and compares data for interventions (river training works, dredging and nourishment), discharge statistics, bed elevation and slope spatially and temporally in the Niederrhein, Bovenrijn, Pannerdensch Kanaal and Waal branches. River training works have actively taken place in the study area so far. Meander cutoffs and normalizations had mainly taken place between 16th and 19th centuries for navigability, and fixed layers, channel widening and side channels have been constructed in 20th and 21st centuries to mitigate river bed degradation and defend hinterland from flood. Dredging and nourishment have been actively conducted in the study area as well, and nourishment is more dominant than dredging in Niederrhein and Bovenrijn. Characteristic yearly discharges are estimated, which is highly fluctuating in time, and Bovenrijn discharge is distributed to about 64% and 36% for Waal river and Pannerdensch Kanaal respectively. According to data, discharge at Rees (Rkm 837) is higher than discharge at Lobith (Rkm 862) which is the most downstream station in the study area. This is probably because of the difference of Q-H relations in the Netherlands and Germany, and more research on the Q-H relations is needed to understand this phenomenon. The bed elevation of the study area is degrading, and it is still ongoing. Bed slope in the Niederrhein and Bovenrijn has steepened between 1934 and 1991, and after the moment bed slope is relatively stable and somewhat constant. Degradation rate is decreasing in time, but it is expected to take more time to reach equilibrium state. It is also confirmed that slope of Pannerdensch Kanaal and Waal is increasing in time.Civil Engineerin
The t(14;20) is a poor prognostic factor in myeloma but is associated with long term stable disease in MGUS
No full textA large series of plasma cell dyscrasias (n=2207) was examined for translocations which deregulate the MAF genes, t(14;20)(q32;q12) and t(14;16)(q32;q23), and their disease behaviour was compared to a group characterised by the t(4;14)(p16;q32) where CCND2 is also up-regulated. The t(14;20) showed low prevalence in myeloma (27/1830, 1.5%) and smoldering myeloma (1/148, <1%) with a higher incidence in MGUS (9/193, 5% p=0.005). Strong associations with del(13) (76%), nonhyperdiploidy (83%) and gain of 1q (58%) were seen but no association with an IgA M-protein or absence of bone disease was noted. All three translocations were associated with poor outcome in myeloma, but strikingly all t(14;20) MGUS/smouldering myeloma cases (n=10) had stable, low level disease. In contrast, the 10 t(14;16) and 25 t(4;14), MGUS/smoldering myeloma cases were associated with both evolving and non-evolving disease. None of the associated genetic abnormalities helped to predict for progression from MGUS or smoldering myeloma
A plea for responsible and inclusive knowledge management at the world level
No full textPurpose – This essay aims to draw attention to the idea of a new research approach to knowledge management (KM) labelled responsible KM (rKM) as a possible answer to not only address the consequences of the pandemic but also other present and upcoming societal challenges. Design/methodology/approach – This essay has been prepared by a KM researcher who shares their own personal views and opinion regarding past and current societal developments and based on that offers a potentially new KM direction. Findings – Switching the focus to rKM may help address current and upcoming social challenges that can only be addressed jointly by the global community and which would also involve a new consideration of the“knowledge” resource. Originality/value – The essay proposes a new alternative approach to KM called rKM that is based on ideas that to the author’s knowledge have not been discussed in this way in the contemporary literature on KM.CC BY 4.0Article publication date: 30 December 2021Corresponding author Susanne Durst can be contacted at: [email protected]</p
Danube River Development Strategy: Interim Report
No full textThe Danube is an essential Inland Water Transport (IWT) corridor, particularly for the hinterland connection for the Port of Constantza. This port became one of the largest and busiest ports on the Black Sea, due to its strategic location at the cross roads of Europe and Asia and due to its capacity to handle large volumes of different types of cargoes. With the ongoing economic reforms in Romania it is expected that the Port of Constantza will develop into a gateway for Eastern and Central Europe and efficient IWT hinterland connections are therefore required. The project "Danube River Development Strategy" aims to formulate a strategy and to define measures to increase the competitive position of IWT and to improve the navigability of the Romanian stretch of the Danube between the Iron Gates II and Giurgeni. The approach of the project can be characterized as strategy formulation to create a high capacity transport corridor at minimum investment costs. The project comprises two phases, i.e. River Status Phase and Strategy Development Phase. The first phase of the project has been completed in September 1994 with the submission of the River Status Report, which describes the present status of the Danube river followed by the generation of alternative development strategies for the Danube. In the second project phase selected strategies are analyzed followed by the selection of the preferred river development strategy. This Interim Report for the Strategy Development Phase includes the analyses of the various alternative development strategies. The report will be presented to and discussed with the Romanian authorities to select and further define the preferred development strategy. This preferred strategy will then be further analysed and reported in the Draft Final Report. The main objective of the Danube River Development Strategy project is to improve the navigation conditions of the Romanian section of the Danube between the Iron Gates II (rkm 869) and Giurgeni (rkm 239) in order to create a competitive IWT hinterland connection for the Port of Constantza. Various alternative development strategies have been considered. The strategies are rated on multiple criteria, where it appeared that all considered strategies are economically viable. The alternatives combi-c3 and combi-c4 appeared to have the best results. For description of all the alternatives we refer to the report.Danube River Development Strateg
Impact of recent changes in river management on maintenance dredging in the Waal river
No full textOver the last centuries, Dutch rivers such as the Rhine have been heavily trained for the purpose of the safe discharge of water, sediment and ice, and navigability. After the notorious flood events of 1993 and 1995 along the Rhine, new large-scale river works were initiated, such as the Room for the River (RfR) programme, to increase flood conveyance capacity. For a better navigation, in 2006 the minimum guaranteed depth on the Waal has been raised from 2.50 m to 2.80 m (relative to the Agreed Low Water level). It is inevitable that the measures of the large-scale works (depending on the type and magnitude of the measure) and changes in the minimum guaranteed depth will influence the morphology of the river and the dredging effort. Three schematisations are distinguished in this research, namely maintenance dredging in the situation with a minimum guaranteed depth of 2.5 m (‘Ref – 2.5 m’), the situation with a minimum guaranteed depth of 2.8 m (‘Ref – 2.8 m’), and the situation after the implementation of the Room for the River programme (‘RfR’, with a minimum guaranteed depth of 2.8 m). The aim of this research is to determine the impacts of the increase in the minimum guaranteed depth and the Room for the River programme on the maintenance dredging in the river Waal using the deterministic approach (traditional) and a stochastic approach, and to determine the potential of a stochastic approach with respect to the deterministic approach in river management practice. Currently, morphological calculations are being executed using a deterministic approach. The deterministic approach appears to be an effective tool to provide a quick expression of the physical morphodynamic processes. However, to fully acknowledge these morphodynamic processes and to derive a precise illustration using a deterministic model is very complex. By ignoring the complexity of the morphodynamic processes, the involved uncertainties are not made explicit. Identifying the uncertainty in morphodynamic predictions is necessary in order to come to grips with system behaviour of the Waal. Therefore, it is important to not only look at the deterministic calculation, but also to perform stochastic calculations. In this study, numerical calculations with a 2D depth averaged Delft3D model are performed using a deterministic and stochastic approach to determine the bed level changes, navigability, and dredging effort. For the deterministic approach a representative discharge hydrograph is used and for the stochastic approach 75 different discharge time series. From the present research it follows that the maintenance dredging volume in the ‘Ref – 2.8 m’ situation is twice as much as in the ‘Ref – 2.5 m’ situation. It increases drastically with 196%. The increase in the maintenance dredging volume in the ‘RfR’ situation compared to the ‘Ref – 2.8 m’ situation is approximately 10 times lower than the increase in the maintenance dredging volume in the ‘Ref – 2.8 m’ situation (which is related to the dredging effort in the ‘Ref – 2.5 m’ situation). This concludes that the increase of the minimum guaranteed depth has a bigger impact on the maintenance dredging than the impact of the Room for the River measures. According to the simulations it also follows that the dredging volume in all sharp bends (Millingen (rkm 869-870), Erlecom (rkm 875-876) and Nijmegen (rkm 883-885)) in total is more than the half of the total dredging volume on the Waal. Nijmegen (rkm 883-886) only covers more than one-third of the total maintenance dredging volume on the Waal. As regards to the deterministic and the stochastic approach, the differences between the mean value of the stochastic approach and the deterministic approach are rather high in the entire Waal (which lies between 30 and 40%). In the Nijmegen area this difference is negligible. Generally speaking, the mean value of the stochastic approach is not underestimated by the deterministic calculations. The large difference does not imply that the stochastic approach is more promising than the deterministic approach or vice versa. The uncertainty range (90%-confidence band) in the stochastic approach helps the river manager to decide where and how to interfere in the river system and it helps in drawing up performance based contracts with dredging companies. The stochastic approach gives more insight in the range or likelihood of predictions if it comes to dredging. If the river manager wants to employ a dredging company (contractor) for maintenance dredging, he can sign the contract for a lower amount of money, since the mean value of the stochastic approach is lower than the results of the deterministic approach.Hydraulic structures & Flood risksHydraulic EngineeringCivil Engineering and Geoscience
Establishing the required lock capacity and configuration in case of canalisation of the river Waal: An exploratory study
No full textThe river Waal is part of an economic important transport-corridor that connects the ports of Antwerp, Rotterdam and Amsterdam to Germany. Ongoing processes such as (1) climate change, (2) large scale river bed erosion and (3) up-scaling of vessels threaten the future navigability of the river. This will lead to massive economic damages as taken in 2018 (Strengs et al., 2020). Canalisation of the river by means of weir-lock complexes is a considered by Rijkswaterstaat to improve inland navigation during periods of low discharge and prevent economic damages. This leads to the primary goal of this study; investigate the required lock capacity to provide smooth and reliable passage of the river Waal now and in the future. A literature review was conducted to assess the future development of the drivers of the worsening navigation conditions and to gain insight in market- and fleet developments. The developments in the drivers underline the urgency for measures. The development of the fleet navigating on the river Waal is characterised by up-scaling for the past 20 year. This trend is expected to continue the coming years. Future market developments are very uncertain due to the energy transition and the nitrogen crisis, making it very difficult to make accurate projections on future fleet intensities and compositions. Therefore a range of traffic intensities is used to characterise future fleets that encounter the lock complexes. The number and locations of the lock complexes is investigated by analysing available nautical depths and water levels along the river Waal for several stationary discharges at Lobith. Water levels are set up to a level such that navigation for all vessels (fully loaded) is possible. From a financial perspective it is most attractive to minimise the number of weir-lock complexes, however this is contrary to flood safety aspects on the river Waal. Installation of two weir lock complexes is considered plausible taking into account minimising the number of weir-lock complexes and flood safety. Vessel traffic simulations are conducted in SIVAK III to investigate the performance of multiple lock configurations in terms of average waiting time and service level. SIVAK III is able to simulate the passage of vessels at an individual level in a network of waterways and locks. A fleet analysis on a representative IVS data set is conducted to provide SIVAK III with fleet intensities, fleet mixes and arrival patterns. For the upstream (rkm 905) lock complex is recommended to use a lock complex with 4 chambers with dimensions 28.4x305m, but with in mind the option for a 5th chamber in the future. This lock complex is able to handle the current fleet +10% intensity within the considered requirements. A 5th lock chamber of the same size can handle an increased intensity of +30% including strong up-scaling effects. For the downstream lock complex (rkm 941) it is recommended to use a lock complex with 4 chambers and dimensions 25x330m. The lock complex is able to handle the current intensity +30%.Civil Engineering | Hydraulic Engineerin
The t(14;20) is a poor prognostic factor in myeloma but is associated with long-term stable disease in monoclonal gammopathies of undetermined significance
No full textA large series of plasma cell dyscrasias (n=2207) was examined for translocations which deregulate the MAF genes, t(14;20)(q32;q12) and t(14;16)(q32;q23), and their disease behavior was compared to a group characterized by the t(4;14)(p16;q32) where CCND2 is also up-regulated. The t(14;20) showed low prevalence in myeloma (27/1830, 1.5%) and smoldering myeloma (1/148, <1%) with a higher incidence in MGUS (9/193, 5% P=0.005). Strong associations. with del(13) (76%), non-hyperdiploidy (83%) and gain of 1q (58%) were seen but no association with an IgA M-protein or absence of bone disease was noted. All three translocations were associated with poor outcome in myeloma, but strikingly all t(14;20) MGUS/smoldering myeloma cases (n=10) had stable, low level disease. In contrast, the 10 t(14;16) and 25 t(4;14) MGUS/smoldering myeloma cases were associated with both evolving and non-evolving disease. None of the associated genetic abnormalities helped to predict for progression from MGUS or smoldering myeloma. (Clinicaltrials.gov identifier: ISRCTN 68454111; UKCRN ID 1176
