bluuebunny/crossref_metadata_2025_split huggingface dataset:
Dividing active and passive particles in nonuniform nutrient environments
Authors: Welker Till , Stark Holger 
Published: May 2024

Abstract
To explore the coupling between a growing population of microorganisms such as E. coli and a nonuniform nutrient distribution, we formulate a minimalistic model. It consists of active Brownian particles that divide and grow at a nutrient-dependent rate following the Monod equation. The nutrient concentration obeys a diffusion equation with a consumption term and a point source. In this setting the heterogeneity in the nutrient distribution can be tuned by the diffusion coefficient. In particle-based simulations, we demonstrate that passive and weakly active particles form proliferation-induced clusters when the nutrient is localized, without relying on further mechanisms such as chemotaxis or adhesion. In contrast, strongly active particles disperse in the whole system during their lifetime and no clustering is present. The steady population is unaffected by activity or nonuniform nutrient distribution and only determined by the ratio of nutrient influx and bacterial death. However, the transient dynamics strongly depends on the nutrient distribution and activity. Passive particles in almost uniform nutrient profiles display a strong population overshoot, with clusters forming all over the system. In contrast, when slowly diffusing nutrients remain centred around the source, the bacterial population quickly approaches the steady state due to its strong coupling to the nutrient. Conversely, the population overshoot of highly active particles becomes stronger when the nutrient localisation increases. We successfully map the transient population dynamics onto a uniform model where the effect of the nonuniform nutrient and bacterial distributions are rationalized by two effective areas.
An efficient approach for solving a class of fractional anomalous diffusion equation with convergence
Authors: Rashidinia Jalil , Molavi-Arabshahi Mahboubeh , Yousefi Mahnaz 
Published: May 2024

Abstract
This article presents a study on Fractional Anomalous Diffusion (FAD) and proposes a novel numerical algorithm for solving Caputo’s type fractional sub-diffusion equations to convert the fractional model into a set of nonlinear algebraic equations. These equations are efficiently solved using the Levenberg-Marquardt algorithm. The study provides the error analysis to validate the proposed method. The effectiveness and accuracy of the method are demonstrated through several test problems, and its performance and reliability are compared with other existing methods in the literature. The results indicate that the proposed method is a reliable and efficient technique for solving fractional sub-diffusion equations, with better accuracy and computational efficiency than other existing methods. The study’s findings could provide a valuable tool for solving FAD in various applications, including physics, chemistry, biology, and engineering.
Influence of the magnetic flux on the dynamics of a self-sustaining system: analytical, numerical and analogical investigations
Authors: Dang-Ra C , Chéagé Chamgoué A , Wouapi M K , Filatrella G , Yamapi R 
Published: May 2024

Abstract
This paper investigates the nonlinear dynamics of a ferroelectric enzyme-substrate reaction modeled by the birhythmic van der Pol oscillator coupled to the magnetic flux. We derive the equilibrium points and study their stability. We analyze some bifurcation structures and the variation of the Lyapunov exponents. The phenomena of symmetric attractors and the anti-monotonicity are observed. By increasing the magnetic flux, we find that the equilibrium points are stable, tends to control chaotic regimes, and affects regular and quasi-regular ones. As the magnetic flux increases, the amplitude of the oscillations around the equilibrium points decreases and the amplitude of the limit cycles at the Hopf bifurcation tends to disappear. Further increasing the magnetic flux gives rise to chaotic dynamics. The electrical circuit and analogical simulations are derived using the PSpice software. The agreement between analogical and numerical results is acceptable.
MIM waveguide based nano refractive index sensor for hemoglobin and glucose concentration detection in human body
Authors: Yan Shubin , Cao Yuhao , Su Yiru , Wang Chong , Chen Chen , Wu Taiquan , Ren Yifeng 
Published: May 2024

Abstract
In this study, a nanoscale refractive index sensor structure is proposed, which is realised using a metal-insulator-metal (MIM) waveguide and a grooved circular ring with double disk cavity (GRDD) structure coupled to each other. The finite element method (FEM) was used to analyze and investigate the effects of the variations of each structural parameter on the transmittance spectra and the comprehensive performance of the sensor. Based on the simulation results, the optimum sensitivity parameter of the sensor structure is 2800 nm R−1IU−1 with a figure of merit (FOM) value of 51.9 RIU−1. The sensor structure is capable of being used in biomedical field with sensitivities of

3.895
nm g
−

L

−
1

,

4.870
nm
/
g

L

−
1

,

and

4.955
nm
/
g

L

−
1

,

respectively, for detecting hemoglobin of blood types A, B, and O, and

4.48
nm
/
g

L

−
1

,

for detecting glucose concentration.
Reconstruction of elastic inclusions in layered medium
Authors: Tang Wanjing , Fang Xiaoping 
Published: May 2024

AbstractWe consider the recovery of small inclusions in a two-layered and an arbitrary multi-layered medium for the elastic equation, respectively. We use layer potential techniques and asymptotic analysis to obtain asymptotic expansions of the perturbed elastic field in a two-layered and an arbitrary multi-layered medium, respectively. Furthermore, we show the uniqueness of the recovery of the locations and Lamé constants of small inclusions through a single measurement.
Bandpass frequency selective surfaces with fast roll-off characteristics
Authors: Tong Jinye , Xu Zhixia , Li Jinji , Zhong Weiye , Shi Jun , Fang Shaojun 
Published: May 2024

Abstract
We propose a bandpass frequency selective surface (FSS) with fast cut-off characteristics and low insertion loss. It consists of a compact high-frequency hybrid compression board with five metal layers, two Rogers RO4003C layers, and two F4B layers. The hierarchical fitting of equivalent circuits is utilized to analyze the FSS, which maintains angular stability for dual-polarized electromagnetic waves at incidence angles of less than 20 degrees. Under normal incidence, transmission amplitudes in the K-band exceed −0.87 dB. Furthermore, the proposed FSS achieves a roll-off rate of 87.6 dB GHz−1, which can be applied in dual-frequency observing systems for millimeter astronomy.
Comment on ‘Deuterium supersaturated surface layer in tungsten: ion energy dependence’
Authors: Li Cong , Gao Liang , von Toussaint Udo , Linsmeier Christian 
Published: May 2024

Abstract
This comment examines a recent study claiming the observation of deuterium (D) supersaturated surface layer (SSL) in tungsten samples exposed to D plasma in the PISCES-A plasma device at ion energies as low as 45 eV/D (Nishijima et al 2023 Nucl. Fusion
63 126003). Applying SDTrimSP simulations and recalling the previous study on SSL formation, herein we want to emphasize that the proposed model in the mentioned paper relies on a number of strong assumptions and that many of the observations made can be more easily rationalized by the presence of impurities. The present comment will be conducive to avoid some possible misunderstanding on the SSL formation mechanism.
A full wave solver integrated with a Fokker–Planck code for optimizing ion heating with ICRF waves for the ITER deuterium–tritium plasma
Authors: Yin Lan , Peng Yaoyi , Zhang Jiahui , Zhang Xinjun , Zheng Pingwei , Wang Zhengxiong , Gong Xueyu , Wang Feng , Tan Qingyi , Chen You , Ma Wankun , Wang Shuangshuang 
Published: May 2024

Abstract
Efficient ion heating is crucial for future fusion devices, and the only way to heat ions directly is ion cyclotron resonance heating. Reported here is a full wave solver integrated with a Fokker–Planck code for optimizing ion heating with ion cyclotron range of frequency waves for the International Thermonuclear Experimental Reactor deuterium–tritium plasma. Both the direct absorption of minority ions and the power transfer to bulk ions via collisions are considered, while also accounting for the edge effects on ion absorption near the core. The simulation results show that the appropriate scrape-off layer density profile and parallel wave number lead to enhanced edge coupling and broaden the absorption region with moderate absorption intensity of the minority ions, which is very important for ion heating. More power from the heated ions is transferred to bulk ions than to electrons through collisions in our simulation via optimization, and reducing the total RF power results in a significant increase of the absorbed fraction of bulk ions.
RFX-mod2 as a flexible device for reversed-field-pinch and low-field tokamak research
Authors: Terranova D. , Agostini M. , Auriemma F. , Gobbin M. , Marchiori G. , Pigatto L. , Porcu P. , Predebon I. , Spizzo G. , Vianello N. , Zanca P. , Abate D. , Bolzonella T. , Bonfiglio D. , Bonotto M. , Cappello S. , Carraro L. , Cavazzana R. , Franz P. , Lorenzini R. , Marrelli L. , Milazzo R. , Peruzzo S. , Puiatti M.E. , Scarin P. , Spolaore M. , Tomasina E. , Valisa M. , Veranda M. , Zaniol B. , Zuin M. 
Published: May 2024

Abstract
The RFX-mod2 installation is planned to be completed by 2024 and the start of operations is expected in 2025. The high flexibility of the machine (already tested in the previous RFX-mod experiment) allows operation in Reversed Field Pinch and tokamak configuration as well as ultra-low q pulses. In this work we present predictive analysis on transport, performances and plasma control in RFX-mod2 in view of the first experimental campaigns.
First realization of LHW–plasma coupling feedback control for long-pulse operation in EAST
Authors: Ding B.J. , Yan G.H. , Yuan Q.P. , Li Y.C. , Wu C.B. , Wu J.H. , Cao B. , Yang J.H. , Li M.H. , Wang M. , Ma W.D. , Wu Z.G. , Sun W. , Liu L. , Zhao L.M. , Hu H.C. , Shan J.F. , Liu F.K. , Qian J.P. , Gong X.Z. ,   the EAST Team
Published: May 2024

Abstract
To sustain good lower hybrid wave (LHW)–plasma coupling for long-pulse plasma operation, for the first time, coupling feedback control is designed and realized in EAST using a proportion integration differentiation method by choosing the reflection coefficient (RC) of LHW power as the reference for gas-puffing feedback, and including one pulse test and multi-pulse experiments. Experiments show that such feedback control can work correctly and maintains good LHW–plasma coupling effectively for a long time, suggesting the possibility of feedback control application on LHW–plasma coupling in long-pulse plasma. Furthermore, during the feedback control process of multi-pulse supersonic molecular beam injection (SMBI), the stored energy changes from 29 kJ to 58 kJ, and the energy confinement factor (H
89) increases from 0.98 to 1.45, implying a positive effect of coupling feedback on plasma performance. Experiments between SMBI puffing and the gas puffing system, fed by a piezoelectric valve near the antenna, are further investigated, showing that the response time of the RC with SMBI is faster than that by the piezoelectric valve. In addition, SMBI puffing on the electron-drift side of the LHW antenna is a little quicker than that on the ion-drift side. Studies suggest that such feedback control is effective for long-pulse LHW–plasma coupling, and the gas puffing by SMBI on the electron-drift side of the LHW antenna could offer an effective way to sustain good LHW coupling in steady-state operation in the future. Further optimization will be continued at a later date.
Cross-scale interaction between microturbulence and meso-scale reversed shear Alfvén eigenmodes in DIII-D plasmas
Authors: Liu P. , Wei X. , Lin Z. , Heidbrink W.W , Brochard G. , Choi G.J. , Nicolau J.H. , Zhang W. 
Published: May 2024

Abstract
This paper reports global nonlinear gyrokinetic simulations that couple meso-scale reversed shear Alfvén eigenmodes (RSAEs) driven by energetic particles (EPs) and ion temperature gradient (ITG) microturbulence driven by thermal plasma, using equilibrium and profiles from DIII-D discharge #159243. In simulations focusing only on the ITG, electrostatic ITG drives a huge thermal ion heat transport, which is reduced by a factor of

10

to a level close to the experimental value in electromagnetic simulation due to finite

β

effect. In the simulations coupling the RSAE and ITG, ITG can scatter the resonant EP nonlinearly trapped by the RSAE and damp the zonal flows generated by the RSAE. The regulation of the RSAE by the ITG greatly reduces the initial saturation amplitude of the RSAE but increases the RSAE amplitude and associated EP transport to experimental levels in the quasi-steady state. The RSAE effects on the ITG, specifically the stronger zonal flows generated by the RSAE and the RSAE frequency modulation of the ITG-induced thermal ion heat transport, in turn, leads to a reduction of the thermal ion heat transport by more than a factor of

2

. For a stronger background ITG, the regulation of the RSAE by the ITG is stronger, while the RSAE effects on the ITG are weaker. This work highlights the importance of cross-scale coupling in the dynamics of the AE turbulence and EP transport.
Simulating The Impact of High-Speed Train Line System Development on Urban Growth by Using Cellular Automata: Study Case Japan
Authors: Noviansyah Alvin , Uno Nobuhiro 
Published: May 2024

Abstract
A major question in the urban planning areas is to understand how urban areas expand. The development of transportation infrastructure such as high-speed railway system is likely to have considerable impacts on the urban growth especially to those area that have access to it. Understanding how the de-elopement will impact the urban growth will be a huge advantage in formulating the spatial plan and to tackle the potential problem. This research attempt to understand how the urban areas expand and analyse the expansion and its relationship with the development of high-speed railway systems by using Artificial Neural-Network Cellular Automata (ANN-CA) approach, utilizing the Modules for Land Use Change (MOLUSCE) plugin in QGIS. This approach has resulted in assisting us to understand the urban expansion pattern and analyse the important component that link the expansion with the infrastructure: Accessibility. By implementing the CA approach, this research also demonstrate that the ANN-CA approach is a promising approach for researcher to understand and analyse the spatial areas in the way it is intended: in spatial manner.
Land Use Modeling Scenarios using Spatial Dynamic Model in Badung Regency
Authors: Arfah Siti , Putri Mega N. , Afifuddin  , Permata Zilda D.O. , Sencaki Dionysius B. , Sanjaya Hartanto , Prayogi Hari , Anatoly Nico , Sumargana Lena 
Published: May 2024

Abstract
Management of land use is necessary to maintain the balance between human needs and environmental aspects. Known as the highest-income region in Indonesia, Badung Regency has substantial demand for land utilization for tourism activities. The conversion of productive agricultural land to tourism areas would threaten the sustainability of natural ecosystems in Badung. This study aims to predict the future land use in Badung Regency in 2033 through two development scenarios, Bussiness As Usual (BAU) and Rapid Economic Growth (REG). The simulation was carried out using spatial dynamic models of cellular automata. Several satellite imageries, municipal data, field surveys, and influencing factors of land transition have been utilized as input for the model. The result indicates that the residential area dominated the development in the BAU scenario with the direction of residential development spreading to the south, and new tourism development portrayed in the north close to the agricultural area. While in the REG scenario, tourism land use had significant growth that does not only approach agricultural land but also protected forest areas in the north. The model accuracy showed moderate agreement according to the Kappa index both in BAU and REG scenarios. The finding of this study could support the decision maker to create a better policy considering the potential impact of land use growth direction.
Benefit distribution of the irrigation system: irrigation reservoir in Geyongan Village, Cirebon Regency, Indonesia
Authors: Novitasari Fika , Maryati Sri 
Published: May 2024

Abstract
This study aim to identify the impact of the development of the irrigation reservoir through the benefit distribution received by the community in Geyongan Village, Cirebon Regency. The stages of research include: identifying the research conceptual framework, data collection, qualitative analysis of benefit distribution referring to conceptual framework before and after irrigation reservoir construction. The role of irrigation infrastructure is very important in terms of ensuring the water provision during dry season. As one of the solutions to the drought problems related to water scarcity, the impact of irrigation reservoirs is essential to determine water sustainability. The previous research has been conducted generally shown that the impact of irrigation reservoir construction gives positive results to agricultural land. However, some research has not been considerate how the benefit distribution of irrigation condition before and after construction. The result shows that during dry and drought season, water availability for irrigation system before and after the reservoir construction is still limited which causes gap of water availability between lower and higher area of agriculture from the secondary irrigation system. Optimum condition occurs after the Geyongan irrigation reservoir constructed during normal rainy season. The results suggest that construction of reservoir irrigation infrastructure can be an alternative option to equalize water allocation in agriculture. Furthermore, it is also important to maintain the sustainability of water availability from water sources or upstream to prevent drought
Water sensitive urban design approach for flood prone area (Study case: Kauman Riverfront Area, Semarang)
Authors: Saffana K , Putra B D , Rani M S 
Published: May 2024

Abstract
Kauman Semarang Riverfront Area is the center of the trade and services area in Semarang, especially for traditional trade. This area is located between three ethnic villages and is adjacent to Kali Semarang, a river that has an important meaning and historical value for the city’s development. Kauman Area is located in Central Semarang District, Semarang City, and is within a 1 km radius of the Semarang Old Town, a tourist attraction in the cultural heritage field, which is known as the priority of socio-cultural development on the city and province scale. However, with this type of potential, Kauman Riverfront Area has a medium-high flooding threat. In 2021, the number of flood incidents was the highest within five years (88 incidents). This study aims to examine the WSUD approach for the study area that focuses on the urban water system to decrease flooding risk and its correlation with urban design elements. The chosen method for this research is a fragmental method that consists of four steps, which begin with collecting data until producing the WSUD component approach, which is likely to be implied. The results show that the WSUD components and water system for Kauman Riverfront Area to increase the stormwater infiltration and storage.
Smart rest area development to support tourist trip in limited access transport area. Study in the Dieng area, Central Java
Authors: Purboyo Hidayat Putro Heru , Sekar Kumalasari Ayu , Dirgahayani Puspita 
Published: May 2024

Abstract
The concept of cluster development has characteristics that are identical to tourism activities. Based on the Master Plan for the KSPN Dieng and its Surroundings, the Dieng Plateau is developed with several development strategies, namely the development and strengthening of local potential-based tourist attractions in a sustainable manner, increasing regional carrying capacity and the participation of local communities to support tourism, as well as developing cross-sectoral and regional policies. Accessibility in the Dieng area and its surroundings is supported by road and the availability of public transport. However, accessibility to the Dieng area, which is in an enclaved area, still faces limitations and causes the time and distance to be quite long. Proposal are taken to develop a rest area with many functions. As in Japan, the concept of “michinoeki” or roadside station was developed to provide comfortable facilities for tourists while resting on their way to main attractions or even making “michinoeki” one of the tourist destinations.
WSUD Techniques for Urban Development with Focus on Saltwater Intrusion Problem, A Case Study of Kedonganan Village - Bali
Authors: Pradnyaningrum P S , Putra B D , Rani M S 
Published: May 2024

Abstract
Water is one of the most important resources in human’s life, and groundwater known as the largest freshwater source in the world. Along the development of the cities and population growth, the demand for water supply is also increasing. With the increasing of the freshwater needs, groundwater is also widely used for human’s daily activities. However, the irresponsible use and exploration of groundwater also certainly generate many problems, one of those is saltwater intrusion. Many coastal areas in Indonesia are starting to face saltwater intrusion problem which cause groundwater is no longer be used properly by the community. Therefore, the problem of saltwater intrusion needs to be addressed. This research aims to see the WSUD techniques which can be applied to prevent saltwater intrusion in coastal areas with Kedonganan Village as a case study. The research methodology used is descriptive qualitative method. For the result of this research, those are some WSUD techniques which can be applied in urban development to prevent saltwater intrusion occurs: rainwater tank, downpipe diverters, biofilters, infiltration basins & trenches, soakwells, swales & buffer strips, and pervious paving which have focus on accelerate infiltration into the aquifer.
Effect of pre-strain on microstructure evolution and fracture behavior of undermatching X80 pipeline steel girth weld
Authors: Dai Lianshuang , Jia Haidong , Yang Fulai , Zhang Shichao , Zhang Zheng , Feng Qingshan , Que Yongbin , Wu Yi 
Published: May 2024

Abstract
This work aims to study the effect of pre-strain on the fracture behavior of X80 pipeline girth weld joint, a comprehensive analysis was conducted on the microstructure and mechanical properties of the girth weld before and after pre-strain treatment. The mechanical properties were evaluated through tensile testing, Charpy impact testing, and digital image correlation (DIC) strain analysis. Furthermore, the microstructure and fracture morphology of the girth weld were observed using optical electron microscopy (OM) and scanning electron microscopy (SEM). The results show that the application of pre-strain treatment leads to dislocation accumulation at the grain boundary of X80 pipeline girth weld, resulting in stress concentration and subsequent formation of damage holes. This process disrupts the continuity of chain M-A island and initiates small cracks at the grain boundary, ultimately causing a significant decrease in impact toughness and impact work from 177 J to about 10 J.