bluuebunny/crossref_metadata_2025_split huggingface dataset:
Development of an Operational Framework for Flood Risk Management
Authors: Herath HMM , Wijesekera NTS , Rajapakse RLHL 
Published: January 2022

Abstract
Uncertainty is inherent to the decision-making process of flood risk management, and hence uncertainty management has been identified as crucial in the decision-making process. Flood management has been transformed towards flood risk management highlighting the stakeholder integration and adaptation to extreme flood events. Therefore, the development of multifunctional land uses over floodplains considering the multiple objectives of the stakeholders have become a key to manage uncertainty incorporated with flood risk management. Integration of multiple stakeholders in the decision-making process has been a challenging task. Therefore, spatial planning as a collaborative planning tool has become very important to manage flood risk. Operationalization of flood risk management is mainly governed by the characteristics of the planning processes and it is also coined with the governance context of each locality. However, the importance of the role of spatial planning in flood risk management is still hidden. Further, there is no common framework developed for structuring the complexity of the planning process. Therefore, this research attempts to develop a framework for the operationalization of flood risk management. The conceptual framework was developed based on a comprehensive literature review. Analytic Hierarchy Process (AHP) has been used and integrated with the Delphi technique to identify and calibrate the criteria and the sub-criteria of the framework. The developed framework has been validated with a case study. This research has been concluded that sixteen characteristics of the decision-making process contribute to the operationalization of flood risk management.
Experimental and Numerical Investigations into Temperature Distributions and VOC Conversion Rate of RTO
Authors: Liu Jingyin , Peng Zhijun 
Published: January 2022

Abstract
As regulations for controlling VOCs (Volatile Organic Compounds) emissions have become more and more stringent, RTO (Regenerative Thermal Oxidizer) which involves heat exchange and storage, combustion and reaction processes has to be further optimised for enhancing the VOC treatment efficiency and reducing energy consumption. In this paper, influences of operating temperature distributions and internal flow fields on gas-out VOC concentration have been studied with experimental investigation and CFD numerical simulation. Experimental results shows that combustion temperature (around the combustor) plays more critical role than thermal storage bed temperature for affecting VOC flow-out concentration. By examining the internal flow and temperature distributions, modelling results demonstrate that fast heat transfer takes place in thermal ceramic beds and high temperature areas are formed around the combustor. At about 20 seconds after a bed working for gas-in flow, the heat transfer has demonstrated obvious attenuating. The research suggests that it is very challenging for simultaneously maintaining low gas-out VOC concentration and keeping low fuel consumption and low combustion temperature in RTOs.
Selection of Energy Upgrades for Canadian Single-Detached Residential Households Based on Occupancy Profile
Authors: Kamal M R , Riyadh M M , Zahid R , Rana A , Kamali M , Sultana S R , Hewage K , Alam M S , Sadiq R 
Published: January 2022

Abstract
The use of energy efficient building systems can play a key role in reducing energy consumption and the adverse impacts of greenhouse gas (GHG) emission. The occupancy profile of residential dwellings has a notable influence on the effectiveness of selecting appropriate energy upgrade retrofits. Building simulation models can be integrated to determine the impact of independent occupancy profile in realizing a building’s carbon mitigation target. In this paper, the most desirable energy upgrade retrofits are suggested for three different occupancy profiles by considering important economic parameters, such as the initial investment, payback period and environmental parameter such as GHG emissions. The three occupancy profiles considered were a single adult, couple without children and couple with children. For this purpose, a calibrated energy model was developed for a single-detached family household in British Columbia, Canada, which was equipped with power sensors for monitoring the real time energy data. From the calibrated energy model, three different energy upgrade retrofits (solar, window, and wall/roof insulation) were modelled for the occupancy profiles chosen and the most suitable energy upgrades were suggested. The results show that solar panels contributed the most in energy cost reduction and upgraded windows had the least GHG emission. With suitable financial initiative, the combination of all the three energy upgrades can be the best option in terms of environment and economy.
Effect of Zeolite on the Compressive Strength of Concrete with Different Types of Cement
Authors: Sudarsono I , Wahyudi S I , Adi H P , Ikval M D 
Published: January 2022

Abstract
Concrete is a material component in coastal area construction. With the increasing demand for concrete for construction purposes, there have been various innovations in concrete mixtures to improve the quality of the concrete, including the compressive strength value of concrete. In the concrete mixture, the researchers also add additive to the concrete mixture, one alternative is natural zeolite which is widely found in the earth. Research by testing concrete samples with variations of the zeolite mixture 0%, 15%, and 25% uses cement type V. The test results are then compared with the results of other studies using different types of cement. Comparative studies of zeolite concrete test with different types of cement show that the optimum proportion of zeolite is around 10% to 20% of the weight of cement to get the best compressive strength value.
Barrier knock-down weir as an alternative technology for irrigation
Authors: Parwanti A , Wahyudi S I , Ni’am M F 
Published: January 2022

Abstract
Sand bags are one of the technologies still widely used to elevate water level. The sand bags are arranged in order to dam the river flow and to irrigate agricultural land, especially during the dry season. In line with its utilization, water supply of this technology is still less effective, thus, alternative technology is needed. This study aimed to test Barrier Knock-Down as an alternative technology that can be assembled and stored. This study was a quantitative research conducted by testing the prototypes. The tests were carried out using a monitor instrument Diver, piezometer. The tests of comparison were conducted in 4 types: Type 1, it was an L shape filled with sand+water; Type 2 was I shape filled with sand+water; Type 3 was an I shape filled with water; Type 4 was in an L shape filled with water. From the results of the study, type 1 is the best method for weir irrigation technology because of its ability to resist vertical and horizontal force than other types. Type 1-an L shape filled with sand+water with the value of safety factor rolling stability 5,28 and shear stability 2,23. Experiment result a stable elevation value in weir, did not experience a shift.
Gabion as a coastal protection structure: a case study in Panjang Island Indonesia
Authors: Adi H P , Wahyudi S I , Soebagyo A 
Published: January 2022

Abstract
Panjang Island is a small island in Jepara, Indonesia which is very vulnerable to coastal damage due to crashing waves. Therefore, presence of coastal protection structure is essentially important. Gabion structure was constructed to protect this coastal area. Considering the age, the existing gabion structure needed assessment and analysis to ensure its performance in term of protecting the coastal area. This study aimed at assessing and analyzing the performance of the existing gabion structure. Data of the study were collected through observing the condition of the structure. Assessment was carried out by scaling 1 (minor) to 5 (severe damage). Results of the analysis showed that the value of stability to overturning was 3.96, while the stability to shearing was 2.07, the structure stability was in safe category. Soil pressure under the structure in σ max. was 0.39 kg/cm2, while σ min was 0.16 kg/cm2, which means safe. The condition of gabion as a coastal protection structure in section 1 was partially damaged with a moderate level of damage, in section 2, the damage was revealed to be a minor level of damage, while in section 3, the damage was in a minor level of damage.
Analysis of Construction Implementation Time and Cost Scheduling by Adjusting Budget Changes Due to the Covid-19 Pandemic (Case Study on the Randugunting Dam Construction Project)
Authors: Setiyono B , Wahyudi S I , Adi H P 
Published: January 2022

Abstract
The Randugunting Dam, located in Blora Regency, is planned to have a capacity of 10.40 million m and is expected to irrigate an area of 630 Ha, providing a raw water supply of 0.15 m/second. The construction activity of the Randugunting Dam is one of the construction works that has been affected by the Covid-19 pandemic, namely cash flow is hampered. Therefore we need an analysis of cash flow management scenarios and determining strategies for handling the impact of the pandemic on implementation. The data used in this study is the result of interviews with the project implementation team for the Randugunting Dam construction, and data on the project cost budget. Cash flow management analysis is carried out by applying 3 scenarios, namely: scenario 1 (fixed time), scenario 2 (slowed down time), and scenario 3 (accelerated time). The analysis was carried out with the help of the Microsoft Project 2010. The determination of the handling strategy in this study used the DSS (Decision Support System) method, and the SWOT (Strength, Weakness, Opportunity, and Threat). The results of the study chose scenario 3, which is to speed up the time of 6 months. Acceleration is done by increasing the working time. The annual cost required is higher than scenario 1 (fixed time) and 2 (delayed time by 7 months), but the building is completed faster and can be used immediately. The strategy generated by SWOT analysis is Diversity Strategy and produces 8 (eight) strategies. Diversity Strategy is a strategy by maximizing internal strength factors (S), namely increasing the internal capabilities of project implementers and avoiding external threat factors (T), especially related to the Covid-19 pandemic.
Drainage System of Tegalsari Polder for Handling Flood and Tide in Tegal City Indonesia
Authors: Yuswo M , Wahyudi S I , Soedarsono  , Boogard F C , Boer E 
Published: January 2022

Abstract
Although in 2019 the local government of Tegal city Indonesia had constructed a retention basin at drainage system of Siwatu, Tegal Barat, Tegal city with a catchment area of 226 ha, the areas around the system still experienced flood and inundation. This study belonged to a descriptive qualitative research aimed to evaluate the performances of Siwatu drainage system and Tegalsari retention basin. Data of the study included field data and technical data from institutions. Based on the 15-year rainfall data (2014 – 2018) from Pemali - Comal PSDA Office, Central Java Province, Indonesia, the statistical parameters of Cs: 0.0027, Ck: 1.904, Sd: 15.91, Cv: 0.144 were obtained and so Gumbel method distribution was applied in the study, the return period rainfall of 10 years was 138 mm, the flood discharge for Qr.10 years was 9.63 m3/sec., the addition of long storage was 8×2,50×500 m, and the combination of pump addition was of 1 m3/sec. with the long storage of 8×2.00×500 m. By implementing one of the alternative choices, either flood or inundation could be resolved.
Analysis of The Carrying Capacity of Tourism Area in Maron Mangrove Edu Park (MMEP) Semarang
Authors: Poedjiastoeti H , Widyasamratri H , Arista C D 
Published: January 2022

Abstract
Ecotourism area which relies on natural conditions and local resources such as plants is required to preserve its existing resources as the main attraction. Number of visitors can be parameter of its development. Tourist visits which exceed capacity has the potential to bring negative impact to the ecotourism as a whole. Therefore, recognizing the capacity of the area is important in order that tourism and conservation activities can synergize and go hand in hand. This study aimed at analyzing the carrying capacity of Maron Mangrove Edu Park (MMEP). Data of the study were collected by surveying visitors of MMEP, interviewing the management and directly observing the site of the study. Data were analyzed based on the concept of carrying capacity. Result of the study showed that the ecotourism area was able to accommodate only 50 people/day. The average number of visitors per day were still under the maximum carrying capacity, thus it was still “safe”. To increase visits of tourists, optimization of the area based on the concept of sustainable tourism were required and could be implemented by improving access to the location, infrastructure and quality of waste management.
Natural dilution and distribution of ammonia of groundwater in Kuta Alam sub-district, Banda Aceh city 16 years post tsunami
Authors: Siddiq S , Saiful  , Arahman N 
Published: January 2022

Abstract
The 2004 earthquake off the west coast of Aceh caused a catastrophic tsunami. The massive influx of seawater into the land affected the environment, especially groundwater. Kuta Alam was one of the sub-districts worst affected by the tsunami. In 2005 and 2006, the quality of groundwater degraded due to, among others, the content of ammonia compounds. Increasing the population density after city reconstruction became a problem for the environment as domestic waste also pollutes the groundwater. This study proved that while 2 of the 3 research samples showed a decrease in the level of ammonia compounds in groundwater. One sampling in a densely populated area showed an increase of ammonia concentration. In areas that are not densely populated, ammonia compounds have diluted to an acceptable level, but an increase was found in densely populated areas. This indicated that the pollution was most likely occur around high population area. Proofing through a simple linear regression analysis showed a strong correlation between the content of ammonia compounds and population density.
Innovation to zero emissions: nuclear energy trough nonproliferation and environment protection- Romanian experience for GEN 4
Authors: Valeca M , Valeca S , Giosanu D 
Published: January 2022

Abstract
The UN Intergovernmental Panel on Climate Change (NY 2019) has concluded that nations must move more swiftly to reduce emissions of carbon dioxide, methane, and other greenhouse gases to avoid the most devastating effects of global warming. The paper presents nuclear energy as part of the solution. Due to the fact that the population is concerned about nuclear proliferation, plant safety and radiation protection, the paper presents the Romanian experience regarding the reduction of the risk of proliferation as well as the project of the 4th generation reactor ALFRED. One of the most important steps in assessing the candidate materials for Generation IV reactors is the material performance under neutron irradiation. In this respect, the paper also presents the results of the evaluations on some potential materials to be used in fast lead cooled reactors.
Influence of boundary conditions on the optimization of a geothermal heat pump studied using a thermodynamic model
Authors: Arz A , Minghini A , Feidt M , Costea M , Moyne C 
Published: January 2022

Abstract
This paper is the logical follow-up to a work [1] whose results were presented at the 28th French Thermal Congress which was to be held in Belfort in 2020. The model developed at that time is completed in this proposal to consider the specificity of the geothermal heat pump. This is a machine operating upon a mechanical vapor compression cycle, the limit of which is an inverse Carnot cycle. Its specificity consists of a cold loop at the source with the geothermal exchanger and the evaporator, then a hot loop at the sink with the condenser and a floor heat exchanger in the application considered here. We are particularly concerned with the optimal sizing of these heat exchangers through their effectiveness. The parametric sensitivity of this distribution to various boundary conditions is studied, especially by focusing on different conditions at the source: (1) imposed soil temperature, corresponding to a Dirichlet condition, (2) imposed heat flux (including adiabatic case), corresponding to a Neumann condition, (3) imposed mechanical power consumed by the heat pump, and (4) imposed coefficient of performance COP, to all cases being associated a finite thermal capacity in thermal contact with the geothermal exchanger operating in steady-state conditions.
Study concerning the thermal energy balance in an internal combustion engine
Authors: Popa Rm , Borborean AT , Stoica V , Ionel I 
Published: January 2022

Abstract
In this scientific report the steps for achieving the energy balance on a test engine Daewoo 1.6 liter in 4 cylinders, with 4 valves per cylinder, its power being77 kW, are presented. The engine was connected to a hydraulic brake during the tests. The energy balance was established, based on measurements applied on the stand test, focusing to determine the lost heat and to conceive a Sankey diagram, accordingly. Two sets of measurements were performed and based on them the heat losses were determined and two Sankey diagrams were depicted. The lost heat through the cooling fluid is determined by measuring the cooling water flow rate and its inlet and outlet temperature. The lost heat through the exhaust gases is determined by the difference between the enthalpy of the exhaust gases and the enthalpy of fresh air. The lost heat due to incomplete chemical combustion is determined by analyzing the composition of the exhaust gases. The measurements are centralized on a graphic user interface, supported by a NI Compact RIO platform.
Estimating the impact of a new bridge over the river Danube
Authors: Vilcan Adrian , Nicolae Viorel , Martin Ivana , Istrate Mihaela 
Published: January 2022

Abstract
The impact of a new bridge over the Danube was estimated using a 3-step road transport model, as at the time no multimodal model was available. Different forecasts have been considered for both scenarios without the project and with the project. Also, sensitivity tests have been carried out in order to assess the impact of various bridge tolls. At the end, time savings and emissions have been estimated.
Electric bus platform for urban mobility
Authors: Tudor E , Marinescu A , Prejbeanu R , Vintila A , Tudorache T , Marinescu D G , Neagu D O , Vasile I , Sburlan I C 
Published: January 2022

Abstract
Today, the technology of automatic battery charging based on Wireless Power Transfer (WPT) for the electric mass transit industry involving electric trains, buses and trams, is being used more and more. The modern solution described in this paper proposes an innovative technology for mixed charging of electric buses, either by wireless charging for 2-3 minutes in selected stations, or by plug-in charging at the end of the bus line, which results in only minimal energy storage on board - practically enough to get to the next charging station. The reduction of the weight of the battery packs determines the increase of the number of passengers transported, but also a reduction of the purchase price of the bus, without reducing the performances. The conversion can cost about half the price of new electric buses, depending on the condition of the vehicle and the extent of the work. This solution can be applied especially for the conversion of Diesel buses into electric buses which is not only sustainable, but also significantly better in terms of investment and operational costs, comparing with the purchase of new electric buses.
Comparative Analysis of Pitching Prediction Algorithms
Authors: Antonov D. , Zaitsev O. , Litvinenko Yu. 
Published: January 2022

Abstract
Two algorithms are described in the paper; one of them is the Kalman filter, which is based on the use of a pitching mathematical model, and the second uses a neural network in which the model is considered unknown. The results of the algorithms sensitivity analysis to the parameters of the model and its influence on the potential accuracy of prediction are presented. A stationary narrow-band second-order Markov process is used as a model of the ship pitching, which was used to form the input signal of the algorithms. Also, the results of the algorithms simulation in predicting real data are presented.
Estimation of the Nuclear Magnetic Gyroscope Sensitivity to Inertial Influences
Authors: Zavitaev A.S. , Evstifeev M. I. 
Published: January 2022

Abstract
The factors influencing the stability of the zero offset of a nuclear magnetic gyroscope (NMG) are considered. As a result, an equation for the connection of these parameters with changes arising in the course of inertial influences on the NMG body has been created. In addition, the displacements caused by vibration effects on the NMG under operating conditions are analyzed. Based on these data, the changes in NMG accuracy are calculated and conclusions are drawn about the effectiveness of the NMG design.
The Okubo–Weiss criterion in hydrodynamic flows: geometric aspects and further extension
Authors: Shivamoggi B K , van Heijst G J F , Kamp L P J 
Published: January 2022

Abstract
The Okubo (1970 Deep Sea Res.
17 445)–Weiss (1991 Physica D 48 273) criterion, has been extensively used as a diagnostic tool to divide a two-dimensional (2D) hydrodynamical flow field into hyperbolic and elliptic regions and to serve as a useful qualitative guide to the complex quantitative criteria. The Okubo–Weiss criterion is frequently validated on empirical grounds by the results ensuing its application. So, we will explore topological implications into the Okubo–Weiss criterion and show the Okubo–Weiss parameter is, to within a positive multiplicative factor, the negative of the Gaussian curvature of the vorticity manifold. The Okubo–Weiss criterion is then reformulated in polar coordinates, and is validated for several examples including the Lamb–Oseen vortex, and the Burgers vortex. These developments are then extended to 2D quasi-geostrophic (QG) flows. The Okubo–Weiss parameter is shown to remain robust under the β-plane approximation to the Coriolis parameter. The Okubo–Weiss criterion is shown to be able to separate the 2D flow-field into coherent elliptic structures and hyperbolic flow configurations very well via numerical simulations of quasi-stationary vortices in QG flows. An Okubo–Weiss type criterion is formulate for 3D axisymmetric slows, and is validated via application to the round Landau–Squire Laminar jet flow.