bluuebunny/crossref_metadata_2025_split huggingface dataset:
Insights into the nature of X(3872) through B meson decays*
Authors: Zhang Zhi-Qing , Guan Zhi-Lin , Zhao Yan-Chao , Zhang Zi-Yu , Sun Zhi-Jie , Wang Na , Ren Xiao-Dong 
Published: September 2022

Abstract
We study the

decays in the perturbative QCD (PQCD) approach, involving the puzzling resonance

, where P represents a light pseudoscalar meson (K or π). Assuming

to be a

charmonium state, we obtain the following results. (a) The branching ratios of the

and

decays are consistent with the results predicted by the covariant light-front approach within errors; however, they are larger than those given by the generalized factorization approach. (b) The branching ratio of the

decay is predicted as

, which is smaller than the previous PQCD calculation result but still slightly larger than the upper limits set by Belle and BaBar. Hence, we suggest that the

decays should be precisely measured by the LHCb and Belle II experiments to help probe the inner structure of

. (c) Compared with the

decays, the

decays have significantly smaller branching ratios, which drop to values as low as

. (d) The direct CP violations of these considered decays are small (

) because the penguin contributions are loop suppressed compared to the tree contributions. The mixing-induced CP violation of the

decay is highly consistent with the current world average value

%. Experimentally testing the results for the branching ratios and CP violations, including the implicit

and isospin symmetries of these decays, helps probe the nature of

.
Calomplification — the power of generative calorimeter models
Authors: Bieringer S. , Butter A. , Diefenbacher S. , Eren E. , Gaede F. , Hundhausen D. , Kasieczka G. , Nachman B. , Plehn T. , Trabs M. 
Published: September 2022

Abstract
Motivated by the high computational costs of classical simulations, machine-learned generative models can be extremely useful in particle physics and elsewhere. They become especially attractive when surrogate models can efficiently learn the underlying distribution, such that a generated sample outperforms a training sample of limited size. This kind of GANplification has been observed for simple Gaussian models. We show the same effect for a physics simulation, specifically photon showers in an
electromagnetic calorimeter.
Performance of BeBe, a proposed dedicated beam-beam monitoring detector for the MPD-NICA experiment at JINR
Authors: Ayala-Torres Marco Alberto , Espinoza Beltrán Lucina Gabriela , Fontaine Sanchez Marcos Aurelio , Hernández-Cruz Luis A. , Montaño Luis Manuel , Maldonado Luna Braian Adair , Moreno-Barbosa Eduardo , Rebolledo-Herrera Lucio F. , Rodríguez-Cahuantzi Mario , Reyna-Ortiz Valeria Z. , Tejeda-Muñoz Guillermo , Zepeda Fernández C.H. 
Published: September 2022

Abstract
The Multipurpose Detector (MPD) is an experimental array, currently under construction,
designed to study the nuclear matter created during the collisions that will be provided by the
Nuclotron-based Ion Collider fAcility (NICA) at JINR. The MPD-NICA experiment consists of a
typical array of particle detectors as those used to study heavy-ion collisions at LHC and
RHIC. To increase the trigger capabilities of MPD for stage 2 of NICA operation, a detector
constituted by two arrays of 80 plastic scintillator cells each located symmetrically at opposite
sides of the interaction point of MPD is proposed (BeBe). Based on Monte Carlo simulations, a
discussion of the potential physics performance of BeBe detector is given for triggering tasks and
for the resolution in the determination of the event plane reaction and the centrality of the
collisions at NICA. Also, laboratory measurements to estimate the time resolution of individual
BeBe cells prototypes are presented. It is shown that a time resolution between 0.47 and 1.39 ns
can be reached depending on the number of photosensors employed to collect the scintillation
photons. The BeBe detector will be complementary to FFD and FHCAL forward detectors.
Measurement and sampling techniques verification for an online gaseous tritium monitoring method
Authors: Chen Qianyuan , Liu Changjun , Zhao Guangyi , Chen Chongyang , Zhuo Weihai 
Published: September 2022

Abstract
During the development and envisaging of an online monitor method, a selection of measurement techniques, counting processes, instrument and sampling methods were performed. Firstly, Liquid scintillation counting was found to be the suitable technique, mass to volume ratio between pretreated water and liquid scintillation cocktail, the MDCs for 3 different liquid scintillation counter (LSCs) were tested individually. The results show that the minimum available MDC of Aloka LB7 is 0.39 Bq L-1 at the condition of 50 g pretreated water, being the one chosen to be the measurement LSC. Secondly, vapor condensation method, which could collect at least 201 g of water each day, was chosen among 3 tested sampling methods. Finally, automatic machinery measures were implemented to integrate the online monitoring method. A stable running status was proved by 15 days of duration test, which indicated that the chosen measurement and sampling technique are suitable for online monitoring.
Snow-influenced floods are more strongly connected in space than purely rainfall-driven floods
Authors: Brunner Manuela I , Fischer Svenja 
Published: September 2022

Abstract
Widespread floods that affect several catchments are associated with large damages and costs. To improve flood protection, a better understanding of the driving processes of such events is needed. Here, we assess how spatial flood connectedness varies with the flood generation process using a flood event classification scheme that distinguishes between rainfall-driven and snowmelt-influenced flood types. Our results show that the dominant flood generation processes in Europe vary by region, season, and event severity. Specifically, we show that severe floods are more often associated with snow-related processes than moderate events. In addition, we find that snow-influenced events show stronger spatial connections than rainfall-driven events. The spatial connectedness of rainfall-driven events depends on the rainfall duration, and the connectedness decreases with increasing duration. These findings have potential implications for flood risk in a warming climate, both locally and regionally. The projected decrease in the frequency of occurrence of snowmelt-influenced floods may translate into a decrease in the frequency of severe and widespread floods in catchments where snowmelt processes are important for flood generation.
Is crushed concrete carbonation significant enough to be considered as a carbon mitigation strategy?
Authors: Ruschi Mendes Saade Marcella , Yahia Ammar , Amor Ben 
Published: September 2022

Abstract
When addressing concrete carbonation as a carbon mitigation option, studies leave out the effect that a temporal difference between the CO2 emissions and uptake happening throughout concrete’s life cycle have on climate change. In this study, the role played by carbonation on concrete’s carbon mitigation potential is investigated through a dynamic life cycle assessment, to properly position CO2 uptake and release. The carbon balance in concrete structures built and demolished from 2018 to 2050 is modelled as a case study. The potential uptake due to crushed concrete carbonation is over 9% of the cumulative global warming effect of concrete manufacturing. It is comparable to the reduction potential of the most promising strategy, namely replacing clinker, totaling 12%. If stimulated in a wide scale, crushed concrete carbonation can push the industry towards meeting carbon mitigation targets faster. Future environmental impact assessments should rely on dynamic models to increasingly consider this phenomenon.
After the dark ages*
Authors: Fröhlich Jürg 
Published: September 2022

Abstract
After recalling some puzzles in cosmology and briefly reviewing the Friedmann–Lemaître cosmos a simple unified model of the ‘dark sector’ is described. This model involves a scalar field and a pseudo-scalar axion field that give rise to dark energy in the form of ‘quintessence’ and to ‘fuzzy’ dark matter, respectively. Predictions of the model concerning the late-time evolution of the Universe and possible implications for the problem of the observed matter–antimatter asymmetry in the Universe are sketched.
System Dynamics Modelling Scenarios for The Import Receiving Infrastructures Capacity Plan & Development in anticipating Future Deficits of Natural Gas Supply in Indonesia.
Authors: Purwosaputra A A , Artana K B , Dinariyana A A B 
Published: September 2022

Abstract
Indonesia is one amongst the biggest natural gas reserves country in south East Asia, with total reserve of about 142,71 TSCF in 2018. Indonesian demand for energy is also increasing over the time in line with its economic and population growth. The improved of global consciousness toward the sustainable environmental issues, has led in to the choice over an affordable source of energy with a less carbon footprint. On the other hand the natural gas supply and domestic production is depleting. At the current rate of consumption and assuming no new reserves discoveries, sooner or later Indonesia will have to face deficit in gas supply. This study, is first aimed to forecast the Indonesia supply and demand situation of natural gas in years to come, and then performing an analysis and assessment toward the availability and adequacy of the required infrastructures especially receiving terminals facilitating for gas import in anticipation of future deficit of gas supply in Indonesia. From which, it will be further analyzed, the geographical distribution of the demand and then potential short of supply in several regions and areas where the demand are most concentrated. Thus few basis System Dynamics scenarios of public policies were simulated for 30 years running simulation. System Dynamics model simulation has been well known as a powerful tool to represent a complex industrial problems such as national energy systems. The result is unveiled the fact that additional import receiving terminals and storage facility is required at certain areas where the deficits most likely exist, and most of them in fact are in Western Zone of Indonesian.
Dynamic Safety Modelling for Ship Management Performance
Authors: Nizar Adi Mas , Nakamura Masumi , Miwa Takashi , Uchida Makoto 
Published: September 2022

Abstract
Recent development and projection of ship operations as a sociotechnical system is getting more complex. In order to successfully emulate a high-reliability organization with a balance between operational efficiency and safety, the shipping companies have to grab a well understanding of the operating performance. However, because the teams are distributed spatially and temporally, a misalignment of shared situation awareness casually exists. We extended Rasmussen’s dynamic safety theory and adjusted it in the context of ship management performance. A modelling study using system dynamics was done to illuminate how the feedback loops construct the interaction between safety, efficiency, and workload. The simulation result shows that the operations behave following the safety and efficiency pressures created by existing goals and boundaries. The model is also able to capture these trade-offs in different variety of operation scenarios. Application such modelling may provide the managers with a better understanding and valuable insight to implement the strategies to sustain safe operations.
Experimental study of a ship with the self-righting moment in extreme condition
Authors: Trimulyono A , Zakki A F , Fuadi M A 
Published: September 2022

Abstract
Patrol vessel is an essential part of offshore security archipelago countries such as Indonesia. The main feature of patrol vessel is operating in rough waves during operation. Ship stability is one of the challenging aspects of patrol vessel because, in extreme conditions, the ship can capsize due to losing a self-righting moment. The present paper carried out a study of a patrol vessel with a self-righting moment in extreme conditions. The condition is a ship with rolling up to above 180°. Thus, the ship can capsize because of losses of the self-righting moment in rough condition. An experimental study is carried out to model a ship with a rolling angle above 180°. The principal dimension of ships Lpp, B, H, T, are 13.0 m, 4.2 m, 2.19 m and 1.15 m, respectively. The study was carried out with a physical model of ship 1:27.4. The model is made using 3D printing to maintain the hull integrity. In the present paper, only the full load condition was tested in the experiment condition. It was showed the ship design was proven to have a self-righting moment in the rolling angle above 180°.
Analysis The Effect of Outrigger (Cadik) Variations on Motion Response of Fishing Boat Using CFD Method
Authors: Darmawan Akbar Bagus , Eka Darma Yeddid Yonatan , Rulianto Jangka 
Published: September 2022

Abstract
Jukung is a type of traditional fishing boat used as transportation for fishing activities in Muncar, Banyuwangi, which has a wave as high as 2 m with a period of 4.6 s which is classified as 2nd sea state. One of the boats used has a length of 7.2 m, width 0.75 m, and height of 0.8 m. The characteristics of the hull which with an L/B ratio of 9.6 require outriggers to help balance while sailing. The outrigger itself is a cylindrical component that is placed at a certain distance on both sides of the boat. Since ancient times, the construction of outrigger boats has been carried out by local artisans by relying on experience. This is certainly very risky because it is not known for certain whether the construction, in this case, the outrigger can keep the boat stable. For this reason, we researched the boat’s motion using the CFD method to provide a reference for the construction of the outrigger design. Using one of the existing boats with LOA 7.2 m, B 0.671 m, and H 0.8 m, and Vs 4.385 kt as a simulation model, we varied the outrigger-centerline distance by 2.5 m and 2.8 m; diameters of 90 mm, 120 mm, and 150 mm; which tested under conditions of full load and light load with the wave directions of headsea (180°), headquarter (135°), and beamsea (90°), resulting in Response Amplitude Operator (RAO) as follows. The model with an outrigger-CL distance of 2.8 m and diameter of 150 mm has the lowest heaving value of 0.02 m/m at a frequency of 4.1 rad/s from the headsea direction, 0.44 m/m at a frequency of 3.7 rad/s from the headquarter direction, and 0.4 m/m at a frequency of 6.2 rad/s from the beamsea direction. This model also has the lowest value in pitching and rolling responses from all directions with each value of 0.4 rad/m to 0.15 rad/m in pitching and relatively 0 rad/m in rolling responses.
Development of the Elements of Tugboat Handling for Berthing and Unberthing of Container Ships
Authors: Asmara I P S , Kristianto D , Mustaghfirin M A , Praharsi Y , Adianto  , Arfianto A Z , Firmansyah C A 
Published: September 2022

Abstract
This paper provides a study on the procedure of tugboat handling for berthing and unberthing of container ships in the Port of Surabaya Container Terminal. The elements of the tugboat assistance consisted of time series of the percentage of tugboats’ power, the direction of the tug’s force, and the duration. This study developed a manoeuvring simulation program using the mathematical manoeuvring group (MMG) model to determine the handling elements to achieve the intended trajectory properly. The model considered the surging force, swaying force, and yawing moment of tugs, as well as the disturbances of current, wind, and wave. The planning trajectory is determined based on berthing and unberthing passages derived from the automatic identification system (AIS) data. The elements resulting in the berthing speed and berthing angle complied with the Permanent International Association of Navigation Congresses (PIANC).
The study of the Modification of the Ro-Ro Ferry’s Angle of the Entrance Using Statistical Methods and Ship Model Resistance Tests
Authors: Cahyadi Sugeng JM , Semin  , Erwandi  
Published: September 2022

AbstractAspects of speed and its correlation to ship resistance greatly affect the performance of ferry ro-ro ships. The fixing of the ship’s resistance is very significant when related to the ship’s economic costs. BTH-BRIN has carried out resistance tests and calculations using the Holtrop statistical method where the resistance result is considered too large. To reduce the resistance, modifications are made, one of which is by changing the angle of the entrance of the ship bow. Again, the Holtrop statistical calculations are then employed to determine the effective angle of the entrance after the ship is modified. Reducing the angle of the entrance of water at the ship’s bow is expected to reduce the resistance in terms of the bow wave. It also needs paying attention to the amount of ship payload that has been planned. This paper describes the process of resistance reduction due to the change of the angle of the entrance of the ferry ro-ro ship. Firstly the resistance of the original ship is predicted using the statistical method and a scaled ship model is made and tested in BTH towing tank. Second, the angle of the entrance of the ferry ro-ro ship is modified. Finally, the modified one is predicted statistically based on the Holtrop method. The results of the statistical analysis of the modified angle of entrance showed that the resistance is smaller than the original one.
Study on the Application of Microcontroller-Based GPS Sensors on Floater Gliders to Reach the Specified Destination
Authors: Purnomo Nanang J H , Masroeri A.A. , Nugroho Wibowo H , Sahlan  
Published: September 2022

Abstract
The purpose of the study is to determine the performance of the control system of the floater glider to a predetermined location. The method used was a combination between software simulation and an experimental free-running test. The Floater control system is equipped with GPS as input and output sensors to determine coordinates or waypoints. The microcontroller mounted was Pixhawk 2.4.8 based on ARM cortex M4 – 32 bits. The floater was driven by two Brushless DC motors and servo motors to drive the Z-Peller steering to the desired trajectory. The floater system applies the default application software from Pixhawk, namely mission planner to plan and also monitor the actual trajectory. To have a proper procedure for testing the designed control system, the three stages of the test were conducted, firstly numerical tuning test using step function on MATLAB simulation, then trajectory simulation test of waypoint using mission planner, and finally the field test in the ILH pond. From the three stages of the test, it was found that the selection of PID gain values Kp = 0.2, Ki = 0.3, and Kd = 0.02, indicating the performance of the floater glider control system to the planned location has a good fit between the trajectory simulation results and the waypoint testing in the pond. These results can be used as a reference in conducting further research so that the navigation accuracy of the control system will be improved.
Meshing generation strategy for prediction of ship resistance using CFD approach
Authors: Yulianti Serliana , Samuel S , Nainggolan T S , Iqbal Muhammad 
Published: September 2022

Abstract
CFD is a numerical approach used to solve fluid problems. In the CFD simulation process, the meshing stage is crucial to produce high accuracy. Meshing is a process where the geometric space of an object is broken down into many nodes to translate the physical components that occur while representing the object’s physical shape. The research objective was to analyze the characteristics of the mesh technique in the Finite Volume Method (FVM) using the RANS (Reynolds - Averaged Navier - Stokes) equation. The numerical simulation approach used three mesh techniques, namely overset mesh, morphing mesh, and moving mesh. The k-ε turbulent model and VOF (Volume of Fluid) were used to model the water and air phases. The mesh technique approach in CFD simulation showed a pattern under experimental testing. This research showed the difference in value to the experimental results, namely by using the moving mesh method, the difference in resistance difference was 8% at high-speed conditions, the difference in trim value at overset mesh was 11%, and the difference in heave value with the moving mesh method was 14% at low speed. The conclusion reported that overset mesh had better than other mesh methods.
The Performance of KH and KG Flexible Riser with Distributed Buoyancy Modules Configuration
Authors: Priyanto Muhammad Pratikto , Putra Danasesha Paradinda , Iskandar Iis 
Published: September 2022

Abstract
As a relatively new technology in the riser structure, Distributed Buoyancy Modules (DBM) are seldom to use on flexible risers in Indonesia Oil and Gas Fields which are dominated by brown fields. DBM have several advantages compared with conventional subsea structures such as Mid-Water Arches (MWA) in installation phase. DBM provides lower budget spending due to the shorter period and easier method in installation phase. The paper presents engineering design of DBM operation and installation in Kakap Field, Natuna Sea, Indonesia to replace the existing KH and KG Risers. Several cases was evaluated in this paper to perform the behaviour of risers using DBM. Based on the static analysis, the maximum effective tension for KH Riser and KG Riser are 100.7 KN and 83.4 KN respectively during their operation with allowable value of less than 1530 KN. Meanwhile, the minimum bending radius for the risers when they are being operated are above the allowable value of 3.926 m which are 6.6 m and 6.7 m for KH and KG Riser in turn. The analysis indicates the both of risers are safe to operate during their life period.
Economic feasibility study due to implementation of dual fuel engine of mini-LNG carrier in LNG distribution to power plants in Bali and Lombok
Authors: Pratiwi Emmy , Made Ariana I , Handani Dhimas Widhi , Dinariyana A A B , Artana Ketut Buda , Abdillah Hayy Nur 
Published: September 2022

Abstract
The fact that the maritime transport contributes 2.8% of global greenhouse gas (GHG) emissions challenges the ship to reduce the CO2 emissions. International Maritime Organization (IMO) requires limiting the sulphur to 0.5% m/m in the fuel oil used on board ships operating outside designated emission control. One of strategies to comply the IMO regulations is by using the alternative fuels which may contain low or zero sulphur for ship main engine and that is liquefied natural gas (LNG). Instead of retrofitting the diesel engine which economically requires higher cost, engine conversion to dual fuel diesel engine is preferable in this study. Before the conversion of dual fuel diesel engine is implemented, the feasibility study should be performed, both technically and economically. This study focused on the economic analysis due to conversion of dual fuel engine using LNG fuel. The study case in this research is the plan of dual fuel engine conversion of Landing Craft Tank (LCT) as mini-LNG carrier for distributing the LNG ISO tank to power plants in Bali and Lombok. The economic analysis in this study was carried out to adjust several components in Capital Expenditure (CAPEX) and Operational Expenditure (OPEX) that occurred due to dual fuel engine conversion. Finally, the result of this papers shows that the dual fuel engine conversion for mini-LNG carrier for gas distribution is economically feasible since it gives the smaller cost compared to diesel engine.