bluuebunny/crossref_metadata_2025 huggingface dataset:
Construction of a specialized integrated simulation platform for molecule screening based on scientific computing workflow engine
Authors: Gou Chengqiu , Li Jifeng , Li Yufeng , Liu Jian , Zhao Shicao , Xiao Yonghao , Duan Bowen
Published: September 2023

Numerical simulation is an efficient tool for evaluation and prediction of material properties and behavior in many industrial domains such as the development of novel materials and medicines. For numerical studies of complex processes or systems with high fidelity, various data processing tools, modeling and simulation programs are typically involved, desiring an integrated platform that can effectively manage the collaboration of such software resources and the execution of the underlying simulation workflow for efficiency purpose. Such a platform could be practically built with a scientific computing workflow engine that focuses on the automatic scheduling and execution of a batch of interrelated computing tasks. In this work, the main procedures on construction of a specialized integrated simulation platform for material research based on a general purpose scientific computing workflow engine named HSWAP is introduced in detail, and its application to molecule screening process of energetic materials is demonstrated. Due to the flexibility and the extensibility of the platform, the work could be handily extended to the screening of other materials such as protein to find optimized protein structures or high entropy alloys to find the best configuration of component contents, as well as other application scenarios such as geometry optimizations of complex structures.
Time-correlated electron and photon counting microscopy
Authors: Yanagimoto Sotatsu , Yamamoto Naoki , Yuge Tatsuro , Saito Hikaru , Akiba Keiichirou , Sannomiya Takumi
Published: September 2023

Electron microscopy based on high-energy electrons allows nanoscopic analytical imaging taking advantage of secondarily generated particles. Especially for cathodoluminescence, the correlation between primary incident electrons and emitted photons includes information on the entire interaction process. However, electron-photon time correlation tracking the relaxation dynamics of luminescent materials has so far not been achieved. In this work, we propose time-correlated electron and photon counting microscopy, where coincidence events of primary electrons and generated photons are counted after interaction. The electron-photon time correlation enables extracting a unique lifetime of the emitter independent of the photon state, accounting for coherent and incoherent photon generation processes. We also introduce a correlation factor and discuss the correlation between electrons and generated coherent photons. Through momentum selection, we observe correlation changes indicating the presence of pair correlation originated from the electron-photon entanglement. The present work lays the foundation for developing next-generation electron microscopy based on quantum correlation.
Non-normal interactions create socio-economic bubbles
Authors: Sornette Didier , Lera Sandro Claudio , Lin Jianhong , Wu Ke
Published: September 2023

In social networks, bursts of activity often result from the imitative behavior between interacting agents. The Ising model, along with its variants in the social sciences, serves as a foundational framework to explain these phenomena through its critical properties. We propose an alternative generic mechanism for the emergence of collective exuberance within a broad class of agent-based models. We show that our model does not require the fine-tuning to a critical point, as is commonly done to explain bursts of activity using the Ising model and its variants. Instead, our approach hinges on the intrinsic non-symmetric and hierarchical organization of socio-economic networks. These non-normal networks exhibit transient and unsustainable surges in herd behavior across a wide range of control parameters even in the subcritical regime, thereby eliminating the need for the - arguably artificial - fine-tuning proximity to a critical point. To empirically validate our framework, we examine the behavior of meme stocks and establish a direct linkage between the size of financial bubbles and the degree of non-normality in the network, as quantified by the Kreiss constant. Our proposed mechanism presents an alternative that is more general than prevailing conceptions of instabilities in diverse social systems.
Simple and fast microderivatization method for determining formaldehyde using narrow-bore liquid chromatography with UV detection
Authors: Ho Hsin-Shu , Lu Chi-Yu
Published: September 2023

Formaldehyde is a harmful substance that can cause sick building syndrome and other diseases, such as contact allergy, asthma, leukemia, cancer, and brain/neuron disorders.
CdTe QD-decorated GO nanosheet heterojunction for efficient photocurrent generation and photocatalytic activity
Authors: Subramanian Sumathi , Ganapathy Sasikala , Subramanian Suguna , Arivarasan Ayyaswamy
Published: September 2023

Cadmium telluride quantum dot (CdTe QD)-decorated graphene oxide (GO) nanosheet is a promising heterojunction for the environmental remediation of organic pollutants in water.
U-type π-conjugated phosphorescent ligand sensitized lanthanide metal–organic frameworks for efficient white-light-emitting diodes
Authors: Chen Ying-Jun , Dou Chang-Xun , Yin Pei-Pei , Chen Jun-Ting , Yang Xiao-Gang , Li Bo , Ma Lu-Fang , Wang Li-Ya
Published: September 2023

U-type π-conjugated molecule was selected to construct Ln-MOFs. The combination of green and red Ln-MOFs with blue phosphor afforded a white LED device.
A dual-module co-regulated stable pressure sensor for human activity monitoring
Authors: Li Xiang , Zhang Wanzhihan , Nie Lanzhen , Zhao Xiaohui , Li Xiaoting , Zhang Wenming
Published: September 2023

A wearable pressure sensor based on PDMS is reported that is made of sandpaper and salt particles as a dual template. This sensor demonstrates high sensitivity, a fast response time, a high detection limit and remains stable after 20 000 cycles.
Prospects of 2D graphene nanomaterials in plant-based agriculture and their fate in terrestrial soil: a critical review
Authors: Das Partho , Penton C. Ryan , Westerhoff Paul , Perreault François
Published: September 2023

To achieve a world without hunger, it is imperative to address the inefficiencies within the current agricultural system by adopting innovative and sustainable approaches.
Bitter taste sensitivity, cruciferous vegetable intake, obesity, and diabetes in American adults: a cross-sectional study of NHANES 2013–2014
Authors: Ma Shirun , Lu Sophia
Published: September 2023

To examine the associations between bitter taste sensitivity, cruciferous vegetable consumption, and likelihood of obesity and diabetes among American adults.
Organic–inorganic hybrid multifunctional materials with high-Tc reversible phase transition and wide bandgap properties
Authors: Tan Yu-Xin , Ying Ting-Ting , Fan Xiao-Wei , Huang Yan-Le , Wan Ming-Yang , Li Qiao-Lin , Wang Fang-Xin , Wang Meng-Na
Published: September 2023

A new reversible phase change multifunctional material [C5H10N (CH3) CH2CH2CH3]2CdBr4 (1), which has high temperature reversible phase change properties at 333 K and the first-principle calculation band gap is 3.99 eV.
From waste to energy: luminescent solar concentrators based on carbon dots derived from surgical facemasks
Authors: Arrigo Antonino , Cancelliere Ambra M. , Galletta Maurilio , Burtone Antonio , Lanteri Giovanni , Nastasi Francesco , Puntoriero Fausto
Published: September 2023

Facemask-derived C-dots were used to prepare luminescent solar concentrators exhibiting a remarkable solar-to-energy conversion of 6.1%.
Nanoarchitected graphene/copper oxide nanoparticles/MoS2 ternary thin films as highly efficient electrodes for aqueous sodium-ion batteries
Authors: Ramos Maria K. , Martins Gustavo , Marcolino-Junior Luiz H. , Bergamini Márcio F. , Oliveira Marcela M. , Zarbin Aldo J. G.
Published: September 2023

Tri-component thin films based on MoS2, graphene and CuO/Cu2O nanoparticles were prepared, characterized and applied as electrodes in aqueous-based Na-ion batteries.
Two molecule force spectroscopy on ligand–receptor interactions
Authors: Zuo Jiacheng , Chen Hui , Li Hongbin
Published: September 2023

Two-molecule force spectroscopy enables the probing of the unbinding of two parallel ligand-receptor pairs.
Efficient preparation of cyclic polymers via pre-stacking of photo-cycloaddition capable end groups and a continuous-flow technique
Authors: Chen Leiyu , Wang Xiang , Hou Ruijie , Lu Haipeng , He Zhenbi , Zhou Xianjing , Zhang Wei , Wang Xinping
Published: September 2023

A series of well-defined monocyclic polymers were efficiently synthesized by pre-stacking of photo-cycloaddition capable end groups and a continuous-flow technique.
Built-in electric field induced interfacial charge distributions of Ni2P/NiSe2 heterojunction for urea-assisted hydrogen evolution reaction
Authors: Sun Yiqiang , Cao Wenwen , Ge Xuening , Yang Xiaodong , Wang Yong , Xu Yuan , Ouyang Bo , Shen Qi , Li Cuncheng
Published: September 2023

Herein, a built-in electric field strategy to obtain efficient heterogeneous Ni2P/NiSe2 bifunctional electrocatalysts for both the hydrogen evolution reaction and the urea oxidation reaction is reported.
β-Trifluoromethylated enones as trifluoromethylated synthons in asymmetric catalysis
Authors: Cheng Xiufang , Niu Wenjin , Wang Huamin , Lin Ying-Wu
Published: September 2023

This minireview describes the applications of β-trifluoromethylated enones in diverse asymmetric catalytic transformations since 2008, and incorporates the mechanistic aspects, involving the key mechanistic intermediates and the reaction pathways.
Enhancing MgO efficiency in CO2 capture: engineered MgO/Mg(OH)2 composites with Cl−, SO42−, and PO43− additives
Authors: Senevirathna Hasanthi L. , Wu Shunnian , Lee Cathie , Kim Jin-Young , Kim Sang Sub , Bai Kewu , Wu Ping
Published: September 2023

Mg(OH)2–MgO interface for CO2 bypass.
Spectral properties of B40 enhanced by small molecule adsorption
Authors: Wang Jia , Zhang Yunkai , Wang Meiqi , Song Ming-Xing , Wang Bo , Qin Zhengkun
Published: September 2023

The luminescence characteristics of small molecule excited B40 is studied. The results show that the adsorbed pyridine and pyrazine can enhance the emission spectrum of B40, while the benzene adsorbed has almost no effect on the spectra of B40.
The relationship between structure and excited-state properties in polyanilines from geminal-based methods
Authors: Jahani Seyedehdelaram , Boguslawski Katharina , Tecmer Paweł
Published: September 2023

We employ pCCD-based methods to study the structure-to-property relationship in polyanilines (PANIs) of different lengths and oxidation states.
High and fast: NMR protein–proton side-chain assignments at 160 kHz and 1.2 GHz
Authors: Callon Morgane , Luder Dominique , Malär Alexander A. , Wiegand Thomas , Římal Václav , Lecoq Lauriane , Böckmann Anja , Samoson Ago , Meier Beat H.
Published: September 2023

The combination of the fastest MAS and highest magnetic field allows to spectrally resolve the side-chain protons of proteins. It makes 1H-detected MAS NMR a key player in the study of protein interactions with other macromolecules or nucleic acids.
A cell-active cyclic peptide targeting the Nrf2/Keap1 protein–protein interaction
Authors: Iegre Jessica , Krajcovicova Sona , Gunnarsson Anders , Wissler Lisa , Käck Helena , Luchniak Anna , Tångefjord Stefan , Narjes Frank , Spring David R.
Published: September 2023

Application of DVP stapling methodology to efficiently develop Nrf2 peptides with nM activity in enzymatic assays, submicromolar activity in cells and non-cytotoxicity, characterised by high resolution X-ray co-crystallography.
Crystallographic evidence for global aromaticity in the di-anion and tetra-anion of a cyclophane hydrocarbon
Authors: Stawski Wojciech , Zhu Yikun , Wei Zheng , Petrukhina Marina A. , Anderson Harry L.
Published: September 2023

Anionic forms of a macrocyclic cyclophane were crystallized by treating the neutral hydrocarbon with alkali metals (Li, Na and K). The di-anions show decreased bond-length alternation, consistent with global aromaticity, whereas the anti-aromatic tetra-anion has a low-symmetry geometry.
Nitrogen-rich porous organic cages with high acetylene storage and separation performance
Authors: Feng Lijuan , Xie Yifei , Wang Wenjing , Su Kongzhao , Yuan Daqiang
Published: September 2023

Two nitrogen-rich porous organic cages (POCs) have been investigated for acetylene (C2H2) storage and separation applications, achieving a high C2H2 uptake value of up to 146 cm3 g−1 at 298 K and 1 atm and effective separation of C2H2/CO2 mixtures.
Myeloid cell-specific deletion of epidermal growth factor receptor aggravates acute cardiac injury
Authors: Okyere Ama D. , Nayak Tapas K. , Patwa Viren , Teplitsky David , McEachern Erin , Carter Rhonda L. , Xu Heli , Gao Erhe , Zhou Yan , Tilley Douglas G.
Published: September 2023

Myeloid cells, including macrophages, play important roles as first responders to cardiac injury and stress. Epidermal growth factor receptor (EGFR) has been identified as a mediator of macrophage responsiveness to select diseases, though its impact on cardiac function or remodeling following acute ischemic injury is unknown. We aimed to define the role of myeloid cell-specific EGFR in the regulation of cardiac function and remodeling following acute myocardial infarction (MI)-induced injury. Floxed EGFR mice were bred with homozygous LysM-Cre (LMC) transgenic mice to yield myeloid-specific EGFR knockout (mKO) mice. Via echocardiography, immunohistochemistry, RNA sequencing and flow cytometry, the impact of myeloid cell-specific EGFR deletion on cardiac structure and function was assessed at baseline and following injury. Compared with LMC controls, myeloid cell-specific EGFR deletion led to an increase in cardiomyocyte hypertrophy at baseline. Bulk RNASeq analysis of isolated cardiac Cd11b+ myeloid cells revealed substantial changes in mKO cell transcripts at baseline, particularly in relation to predicted decreases in neovascularization. In response to myocardial infarction, mKO mice experienced a hastened decline in cardiac function with isolated cardiac Cd11b+ myeloid cells expressing decreased levels of the pro-reparative mediators Vegfa and Il10, which coincided with enhanced cardiac hypertrophy and decreased capillary density. Overall, loss of EGFR qualitatively alters cardiac resident macrophages that promotes a low level of basal stress and a more rapid decrease in cardiac function along with worsened repair following acute ischemic injury.
Detecting covert channel attacks on cyber‐physical systems
Authors: Li Hongwei , Chasaki Danai
Published: September 2023

Cyberattacks on cyber‐physical systems (CPS) have the potential to cause widespread disruption and affect the safety of millions of people. Machine learning can be an effective tool for detecting attacks on CPS, including the most stealthy types of attacks, known as covert channel attacks. In this study, the authors describe a novel hierarchical ensemble architecture for detecting covert channel attacks in CPS. Our proposed approach uses a combination of TCP payload entropy and network flows for feature engineering. Our approach achieves high detection performance, shortens the model training duration, and shows promise for effective detection of covert channel communications. This novel architecture closely mirrors the CPS attack stages in real‐life, providing flexibility and adaptability in detecting new types of attacks.
A novel multifunctional intelligent bed integrated with multimodal human–robot interaction approach and safe nursing methods
Authors: Zhao Donghui , Wu Yuhui , Yang Chenhao , Yang Junyou , Liu Houdei , Wang Shuoyu , Jiang Yinlai , Hiroshi Yokoi
Published: September 2023

The authors propose a multifunctional intelligent bed (MIB) that integrates multiple modes of interaction to improve the welfare of mobility‐impaired users and reduce the workload of medical personnel. The MIB features independent autonomous omnidirectional movement, position adjustment, multi‐degree‐of‐freedom (DOF) movement regulation and posture memory functions to facilitate comfortable and convenient interaction for mobility‐impaired users. In particular, an integrated “MIB‐state perception‐interaction interfaces” system is established, and a bed fall risk detection algorithm and assisted get‐up‐transfer algorithm is proposed. By recognising and sharing human body state characteristics, nursing collaboration can be achieved with caregivers or other nursing robots. Comprehensive experiments demonstrate that the MIB is a novel MIB that is highly adaptable to the environment, convenient to interact with and safe. By integrating the proposed algorithms, daily safety monitoring, assisted get‐up and defecation tasks can be effectively accomplished. This technology demonstrates excellent applicability and promising prospects for implementation in hospitals, nursing centres and homes catering to elderly and disabled individuals with mobility impairments.
Learning from output‐feedback control of sampled‐data systems in normal form
Authors: Hu Jingtao , Wu Weiming , Zhang Fukai , Wang Cong
Published: September 2023

This paper investigates the learning and control problem of sampled‐data systems with only output measurements. A unified approach is presented by integrating the sampled‐data observer and deterministic learning. First, an adaptive radial basis function network (RBFN) learning controller with a sampled‐data observer is designed to track a recurrent reference model. Along the trajectory estimated by the observer, it is proven that the RBFN weights can exponentially converge to their ideal values with the satisfaction of a persistent excitation (PE) condition and the closed‐loop dynamics can be accurately learned during the output‐feedback process. Second, by using the learning results, a knowledge‐based output‐feedback controller is developed to improve the tracking performance. Further research shows that choosing appropriate parameters for the observer and RBFN can guarantee learning and control performance. The significance of the proposed approach is that the closed‐loop dynamics of the output‐feedback process can be accurately learned and further utilized to improve control performance. Simulation studies indicate the effectiveness and advantages of the learning control approach.
Electronic health records perception among three healthcare providers specialties in Saudi Arabia: A cross‐sectional study
Authors: Jabali A. Karim , Abdulla Fuad A.
Published: September 2023

Worldwide, more health care facilities are adapting the use of electronic health record (EHR). Healthcare providers (HCP) have different perceptions toward the use of EHR. To investigate the perception of three classes of HCP in Saudi Arabia toward using EHR, a questionnaire (targeting satisfaction, easiness, and benefits of use as major perception indicators) was prepared. The questionnaire was assessed by an expert panel for content validity. The questionnaire internal consistency was examined using Cronbach's alpha. 108 physicians, physical therapists (PT) and respiratory care therapists (RT) from different hospitals in Saudi Arabia answered the questionnaire. Most of respondents perceived EHR systems as beneficial and made work easier. Most HCP were satisfied with the use of EHR, however, with the use of EHR more time was needed to finish the work. Age, experience, job, and job rank of HCP are of different importance in determining responses, perception, and obstacles of using EHR. Moreover, the perception of using EHR seems to be field specific. There is a positive perception among Saudi Arabia HCP about EHR use.
The GAPS programme at TNG
Authors: Turrini D. , Marzari F. , Polychroni D. , Claudi R. , Desidera S. , Mesa D. , Pinamonti M. , Sozzetti A. , Suárez Mascareño A. , Damasso M. , Benatti S. , Malavolta L. , Micela G. , Zinzi A. , Béjar V. J. S. , Biazzo K. , Bignamini A. , Bonavita M. , Borsa F. , del Burgo C. , Chauvin G. , Delorme P. , González Hernández J. I. , Gratton R. , Hagelberg J. , Janson M. , Langlois M. , Lanza A. F. , Lazzoni C. , Lodieu N. , Maggio A. , Mancini L. , Molinari E. , Molinaro M. , Murgas F. , Nardiello D.
Published: September 2023

Context. Observational data from space- and ground-based campaigns have revealed that the 10-30 Ma old V1298Tau star hosts a compact and massive system of four planets. Mass estimates are available for the two outer giant planets and point to unexpectedly high densities for their young ages.

Aims. We investigate the formation of these two outermost giant planets, V1298 Tau b and e, and the present dynamical state of V1298 Tau’s global architecture in order to shed light on the history of this young and peculiar extrasolar system.

Methods. We performed detailed N-body simulations to explore the link between the densities of V1298 Tau b and e and their migration and accretion of planetesimals within the native circumstellar disk. We combined N-body simulations and the normalized angular momentum deficit (NAMD) analysis of the architecture to characterize V1298 Tau’s dynamical state and connect it to the formation history of the system. We searched for outer planetary companions to constrain V1298 Tau’s planetary architecture and the extension of its primordial circumstellar disk.

Results. The high densities of V1298 Tau b and e suggest they formed at quite a distance from their host star, likely beyond the CO2 snowline. The higher nominal density of V1298 Tau e suggests it formed farther out than V1298 Tau b. The current architecture of V1298 Tau is not characterized by resonant chains. Planet-planet scattering with an outer giant planet is the most likely cause for the lack of a resonant chain between V1298 Tau’s planets, but currently our search for outer companions using SPHERE and Gaia observations can exclude only the presence of planets more massive than 2 MJ.

Conclusions. The most plausible scenario for V1298 Tau’s formation is that the system formed by convergent migration and resonant trapping of planets born in a compact and plausibly massive disk. In the wake of their migration, V1298 Tau b and e would have left a dynamically excited protoplanetary disk, naturally creating the conditions for the later breaking of the resonant chain by planet-planet scattering.
Evaluation of a construction management software: "Progresi"
Authors: Aziz Muhammad , Ghuzdewan Toriq
Published: September 2023

The number of project management software developed is increasing which encourages better project management practices. Reluctance to use software may be due to a lack of understanding of software applications, considering software to be complex and impractical, or because it is perceived as expensive. This paper aims to evaluate "Progresi" as a project management software created by a local developer, specifically aimed at managing construction projects in Indonesia. A simulation is carried out based on real project data, to find out the features of the software and its potential use for construction project management. The research results show that “Progresi” produces Gantt charts, S-curves, budget tables, and resource tables. Its unique feature is that it accommodates the concept of unit price analysis for cost budgeting, provides a menu for safety management, generates daily project reports, and can be used to store photos and documents neatly and easily accessible which are useful for project audit purposes. Suggestions that can be given for improving this software are the need to provide a formal software manual, supplement it with network planning, and improve the appearance of Gantt charts and tables to make it look more professional.
Study of inundation and eco drainage system approach in Cicayur Kampong area
Authors: Aurice Pradiesha Alivia , Yureana Wijayanti , Ayu Kusumadewi Riana
Published: September 2023

Cicayur Kampong, Pagedangan District, Tangerang Regency is a residential area adjacent to the urban area. This area has experienced inundation since 2018. This study aims to evaluate existing drainage systems, assess the performance of channels in serving surface runoff to their catchment areas and provide alternative solutions by eco drainage approach using rainwater harvesting and recharge well. This study was carried out by processing daily rainfall data over a time span of 2011 to 2021. Hydrology analysis was performed manually, and the hydraulic simulation was conducted using the Storm Water Management Model (SWMM) 5.1. The rainfall intensity applied for modeling is 37.29 mm/hour, 46.96 mm/hour, and 53.41 mm/hour for 2, 5, and 10 years return periods, respectively. The results of the simulation of the existing drainage system show that there are 2 (two) channels that experience overflow during the 2 and 5-year return periods and increase to 5 (five) channels during the 10-year periods. Alternative solution with rainwater harvesting and recharge well shows a large reduction in surface runoff flowing into drainage channels by 45%.
Examining meandering stream by using geomorphological characteristics with GIS-based analysis
Authors: Tallar Robby Yussac , Pattipawaej Olga Catherina , Desiani Asriwiyanti , Saputra Yonathan Adi , Joelin Gerard Christian , Lehman Andre Sebastian
Published: September 2023

An assessment of the meandering stream type using its classification system to geomorphology characteristics combined with GIS-based analysis is presented in this paper. It describes geomorphology characteristics consisting of 8 parameters with GIS-based analysis that differ in the zone of sediment position, stream width, stream sinuosity, amplitude, wavelength, bend sharpness, meander pattern, and slope. The selected case study in this paper is the Barito Stream, South Kalimantan, Indonesia. Based on the results, the variability varied in all the geomorphology characteristics except bend sharpness and slope. The transport zone is the longest zone with classified as a very wide river with moderate sinuosity and high amplitude (< 1500). It is also categorized as a moderate wavelength and sharp bend with a relatively shallow slope. This approach is a simple, appropriate, and easy-to-use practice in examining meandering stream since there is no data or lack of supporting field data. The implementation of this meandering stream classification method is suitable for stream restoration projects, fish habitat enhancement, and water resource management. Further research is the study of possible geomorphic responses of a channel to natural and anthropogenic disturbances including channel-bed degradation, channel-bed aggradation, channel widening, and channel straightening.
Simulation of incompressible viscous flow using finite element method
Authors: Dewanto Gamaliel , Pranoto Wati , Widjajakusuma Jack , Matuttis Hans-Georg
Published: September 2023

This study focused on simulating incompressible viscous flow using the finite element method. This study used velocity and pressure as unknowns known as primitive variable formulations. Simulation of incompressible fluid flow poses numerical challenges due to the presence of nonlinear convective terms in Navier-Stokes equations and the incompressible nature of the fluid. If the connection between velocities and pressure is not discretized correctly, the stable and convergent velocities might be gained, but the obtained pressure will be oscillatory. To avoid these difficulties, continuous quadratic and additional cubic bubble functions will be used for the velocity field and linear functions for the pressure field. This kind of discretization satisfies the Ladyzhenskaya-Babuška-Brezzi (LBB) stability condition. Two cases of different Reynolds numbers were used to test the formulation's effectiveness. In the case of Reynolds number 0.12, no vortices were formed, suggesting that the flow is primarily governed by fluid friction, and fluid inertia has minimal effect. In the case of Reynolds number 120, the vortex formation, which is known as Von Kármán vortex street, appeared. These results concluded that the formulation using the finite element method is correct.
Green transportation: Development opportunities in support of sustainable transportation
Authors: Sarjana Sri
Published: September 2023

Green transportation is a concept developed by utilizing vehicles that are environmentally friendly, low in emissions and do not produce pollution that has a negative impact on the environment. This study aims to analyze scientific publications by utilizing green transportation as the main construct that has relevance to sustainable transportation to be directed into novelty and followed up in future developments. Meta analysis was developed by optimizing the use of scientific literature on the concept of green transportation. The analysis was developed through a qualitative approach and literature review using VOSviewer. This study describes 4920 journals published from 2018 to 2022 as data sources from database search results found on Google Scholar which were developed through the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) stages. Results state that the trend of scientific publications on the studied construct has increased in line with the need for the sustainability of the transportation system. In addition, novelty of construct is obtained as a derivative of green transportation including green supply chain, green warehousing, green distribution, green logistics, green manufacturing, green production, green packaging, green infrastructure, green economy, green marketing, green initiative, clean energy, emission reduction, new energy vehicles and green cities. The novelty of constructs found needs to be followed up in further studies along with the development of knowledge and technology which is encouraged to support sustainable development.
The impact of service quality and passenger satisfaction on passenger loyalty of Petra shuttle bus
Authors: Setiawan Rudy , Japarianto Edwin , Santoso Katherina Stefani , Samsudin Yohanes Malvin
Published: September 2023

To provide alternatives for students that usually using a private vehicle for traveling to campus and to optimize current parking supply, Petra Christian University has prepared Petra Shuttle Bus (PSB) that has started its service since April 2022. This study examines the most sensitive attribute that affects the car/motorcycle users to shift to PSB and the impact of service quality and passenger satisfaction on passenger loyalty of the PSB. Data were collected from a random sample of 126 students who have been using PSB and was analysed using PLS structural equation modeling. Based on the mode choice model, the parking fee is the most sensitive attribute that influences students to shift from private vehicle to PSB, compared with both time to find an empty parking space and time to walk from the parking lot or pick up location to campus buildings. Results show that service quality has significant positive effects on passenger satisfaction, and passenger satisfaction also has significant positive effects on passenger loyalty. But the service quality has insignificant negative effects on passenger loyalty. The results as well indicate that service quality explains up to 64.3% variance of passenger satisfaction, while service quality and passenger satisfaction explain up to 45.2% variance of passenger loyalty.
How airline service post COVID-19 pandemic? Domestic LCC passenger perception in Indonesia
Authors: Irfan Rifai Andri , Manao Agusman , Handayani Susanty
Published: September 2023

Domestic Low-Cost Carrier (LCC) airlines are the primary choice for travelers when traveling during the post-pandemic COVID-19. Indonesia is a country with quite a lot of flight routes with various LCC services. This research was conducted on domestic LCC services in Indonesia during the Post COVID-19 pandemic, completed in December 2022 and January 2023. Data were obtained using a questionnaire with 100 respondents using a Linkert scale. Analysis of the data was carried out using Importance Performance Analysis and Customer Satisfaction Index. The research results show exciting things. Based on the results of the CSI calculation, it is 74.72%. This result means that domestic LCC passengers consider the airline's service Fair. The results of mapping the level of importance and performance of domestic LCC obtained two attributes included in the main priority: Information to passengers in the event of a delay and maintenance and availability of cleaning facilities on the plane. In addition, the Convenience dimension is a priority that must be considered by domestic LCC airlines in Indonesia.
The conceptual of barrier-free access for passengers based on transit-oriented development in Greater Jakarta - Indonesia
Authors: Jumardi Jumardi , Rifai Andri Irfan , Prasetijo Joewono , Handayani Susanty
Published: September 2023

Increased mobility in the Greater Jakarta area has brought demand for people's accessibility. Providing a barrier-free travel system needs to be supported by understanding travel needs and the characteristics of the user community. This paper aims to describe the actual condition of barrier-free availability for public transport passengers based on Transit Oriented Development, then proposes a development concept. The research was conducted at several public transport nodes in Greater Jakarta, Indonesia. The data analysis method uses a qualitative descriptive analysis which explains the existing condition of the area, facilities, potential, and development plans. From observations, several locations have implemented the barrier-free principle to support the movement of all groups. Barrier-free facilities are generally found at mass public transportation stations such as Light Rapid Transit (LRT) and Mass Rapid Transit (MRT). In contrast, at Commuter Line (CL) stations, the concept has begun to be applied, and barrier-free facilities have been provided even though the number and limited kind. When using public transportation, barrier-free facilities must be improved for all groups, including seniors, people with physical and mental limitations, and pregnant women. Persons with disabilities may experience difficulties in accessing public facilities, such as narrow sidewalks, steep roads, and incomplete pelican crossing systems. Development can refer to regulations that the government has prepared. The development of various public transport that is currently underway must be balanced with the readiness of massive barrier-free facilities. Regulators and public transport operators in Indonesia can use the development of barrier-free facilities in other countries, such as Japan.
Transportation mode choice model between private car and railway for responding the operation of Makassar - Parepare railway for Makassar - Pangkep route
Authors: Mullyani Savitri Prasandi , Ramli Muhammad Isran , Adisasmita Sakti Adji , Abdurrahman Muhammad Asad , Yatmar Hajriyanti
Published: September 2023

The construction of the Makassar – Parepare Railway is an effort to support the integration of the national transportation system. The construction of the Maros-Barru Railway Line (± 71 KM) as part of the Makassar-Parepare line has been completed. In the context of the Operation of the Makassar - Pare-pare Regional Railway, it is important to carry out studies that are urgently needed in planning and making transportation policies. Mode choice is a unique issue and cannot be determined casually. And have been affectedby characteristics of the community/population as potential passengers along the operational area. This research was conducted to assess the level of probability of choosing the mode of community travel on the Makassar - Pangkep route. The research methodology was carried out by Stated Preference and data processing used the STATA program which was analyzed using the discrete choice analysis method approach to individual behavior. Apart from that, an estimation of the sensitivity of travelers is also carried out in determining the choice of mode if changes are made to the attributes of the trip. The mode choice model used is the Logit model for selecting two modes where the ones being reviewed are trains and private vehicles (cars). The results showed that the probability of choosing a train and a private car was 43% and 57%, respectively. The results of the sensitivity analysis show a negative direction, which states that the bigger/longer the attribute value, the lower the probability of choosing a train.
Soil-structure pile foundation interaction model due to lateral loading
Authors: Rahmadi Agus Parwito , Gunawan Sumiyati
Published: September 2023

Experimental research on piles, by models and physical tests on a laboratory scale, using materials and sizes that are different from the prototypes. The model is designed, treated, and interpreted the results of observing the response based on similarity using Model theory, but the soil sample cannot be modeled with model theory, giving rise to doubts similarity of the research. This study was conducted to examine the effect of pile-soil interaction on several views of the elastic modulus of the soil due to lateral loads. Laboratory model pile foundations are laterally loaded, on soil samples in a test box. The deflection of the pile foundation is analyzed based on the use of linear, layered, and non-linear modulus of elasticity. A non-linear simulation of the Winkler model with a spring along the depth of the pile was carried out to calibrate the horizontal deflection of the laboratory experimental model. The results showed that the Winkler model's modulus of elasticity was approximately 40% of the pile length, and the non-linear difference between the Winkler and laboratory models was 10.77%, comparisons can be conclusive about the need for similar research on lateral loading of laboratory model piles. The analysis also noted that the surface deflection was determined by winkler’s model elastic modulus analysis with an excess of about 12% to 14% in the first 10% of the pile length.
Identification of re-liquefaction potential based SPT and MASW data in Mpanau, Sigi after the earthquake 2018
Authors: Kusumajati Bayu , Rifa’i Ahmad , Istiarto Istiarto
Published: September 2023

In September 2018, there was an earthquake followed by liquefaction which caused damage to thousands of houses and infrastructure in Central Sulawesi Province, Indonesia. Liquefaction in Central Sulawesi has the potential to recur, so identifying potential liquefaction in areas that have occurred is essential. The objective of this research is to compare the results of determining liquefaction potential based on geotechnical and geophysical data. Based on the peak ground acceleration earthquake value, it shows that the liquefaction potential obtained in Mpanau is resemblant. The simulation will be conducted using Settle3 software based on methods, then the values of Cyclic Resistance Ratio (CRR) and Cyclic Stress Ratio (CSR) will be compared based on existing Multi-Channel Analysis of Surface Waves (MASW) data. MASW needs to be considered in the way of potential identification because it is advantageous. This Research uses MASW data where liquefaction flow and damage do not occur in Mpanau area even though the potential is quite significant. The result of this research shows that at distinct points of the SPT, MASW and the 7.5 Mw earthquake resulted in potential liquefaction still present in several soil layers, especially in the Gumbasa canal. It is necessary to repair and countermeasure to prevent liquefaction from disrupting the irrigation system's performance.
Liquefaction potential in the governor's office of West Sulawesi after the 2021 Mamuju-Majene earthquake
Authors: Satilah Sabra El , Hardiyatmo Hary Christady , Satyarno Iman
Published: September 2023

The Governor's Office of West Sulawesi Province is close to an active fault, which triggers its vulnerability to seismic activity. The Mamuju Majene Earthquake destroyed the Governor's office building with a magnitude of Mw 6.2 in 2021. The geological conditions at the site are alluvial deposit formations. In addition to the geotechnical conditions, it has the characteristics of sandy soil with fine to medium gradations. Liquefaction causes a loss of soil strength and an increased pore water pressure caused by vibrations on the earth's surface in the form of seismic waves. It causes a decrease in effective stress, ground settlement, and lateral spreading. This study aims to determine the potential for liquefaction in The Governor's Office of West Sulawesi using a simplified procedure method with a Standard Penetration Test (SPT). The Peak Ground Acceleration (PGA) value is determined using the RSA Human Settlements. The Liquefaction Potential Index (LPI) produces five zones of liquefaction potential levels. The analysis showed that The Governor's Office of West Sulawesi experienced liquefaction at a depth of 12-18 meters with a moderate to very high level.
Correlation of excess pore water pressure ratio on flow liquefaction phenomenon in Sibalaya – Central Sulawesi Province
Authors: Oktarina Purbawati , Fikri Faris , Istiarto
Published: September 2023

On September 28, 2018, liquefaction in Sibalaya damaged irrigation canals and hit 51.2 hectares fields and roads. This phenomenon was triggered by an earthquake of magnitude 7.5 that shook Sigi Regency, Central Sulawesi Province. As an increase in soil pore water pressure is one of the causes of liquefaction, the pore water pressure ratio (ru) at the study site was analyzed. Then, this figure is used as a point of reference to determine the liquefaction potential. Standard Penetration Test (SPT) data and laboratory tests from four boreholes resulting from soil investigations in 2021 with a maximum depth of 20 meters were utilized in this study, along with microtremor data down to the depth of bedrock from test results in 2023. Based on the data, the liquefaction potential was assessed using the one-dimensional nonlinear site response approach, the GQ/H + PWP model, and the DEEPSOIL V.7 program. At multiple layers of boreholes, ru is more than or equal to 0.8, indicating that the Sibalaya liquefaction flow area is still susceptible to liquefaction.
Unconfined compressive strength test on geopolymer fly ash stabilized clay shale
Authors: Edi Hartono , Willis Diana , Farid Nur Bahti
Published: September 2023

This paper discusses the problem of clay shale in construction and the need for its improvement. The use of geopolymer as a sustainable and environmentally friendly solution for soil stabilization is presented as an alternative to cement-based stabilization. Geopolymers are inorganic aluminum-silicates formed by silicon and aluminum and can be easily found in materials such as fly ash mixed with sodium hydroxide and sodium silicate. The successful use of geopolymer as a soil stabilizer has been reported in several studies, and the alkali activators used significantly impact the mechanical properties and durability of the geopolymer-stabilized soil. This paper aims to explore how geopolymer works for soil stabilization and its corresponding unconfined compressive strength value. The study's findings indicate that the concentration of the alkali activator had a significant influence on the stabilized soil's compressive strength, brittleness index, and secant modulus. The research identified an optimal range of 12-14 M for Na2SiO3+NaOH mixtures in fly ash-based geopolymers, and emphasized the importance of the alkali activator ratio in stabilizing soil with geopolymer materials. However, the study suggests that further research is necessary to investigate the impact of different ratios and molarities of alkali activator on stabilized soil properties.
Effects of few layers graphene addition, aggregate size, and water acidity on the compressive strength and morphology of cellular lightweight concrete
Authors: Amri Amun , Wulandari Revika , Novrianda  , Heltina Desi , Maizir Harnedi
Published: September 2023

Cellular Lightweight Concrete (CLC) with the addition of Few Layers Graphene (FLG) has been fabricated and characterized for canal blocks application. The CLC-FLG composite was made by mixing fine agregate (sand), cement, fly ash, water, and FLG. The compressive strength properties of the composite was tested using a digital compressive strength test to determine the effects of FLG addition, sand size gradations, and environmental acidity on the compressive strength of the composite. Meanwhile, the composite morphology was examined using Scanning Electron Microscopy (SEM). The increase in FLG content and concentrations increased the compressive strength. The highest compressive strength was shown by the composite with the highest FLG addition (15%) and without sand size gradation, namely 5.19 Mpa or there was an increase of 15.6% compared to CLC without the addition of FLG. The level of water acidity relatively did not affected the compressive strength of CLC-FLG composite. Morphological analysis showed that the addition of FLG resulted in a denser structure and reduced porosity of CLC. The CLC-FLG composite can be used as canal blocks materials for peatland restoration.
Seismic performance of post - fire building (case study: Pasar Wage, Banyumas)
Authors: Khalifah Via Azizul Saputri , Kristiawan Stefanus Adi , Saifullah Halwan Alfisa
Published: September 2023

On September 21, 2020, the Pasar Wage Building of Kabupaten Banyumas was hit by a fire causing spalling of the concrete and thus exposing the steel reinforcement. This damage can affect the performance and safety of the building. For this reason, an evaluation is needed to determine the performance of the post-fire structure to propose the necessary repair and retrofitting. Investigation and testing in the field were carried out in this study as primary data for seismic performance analysis. Static pushover analysis was carried out to provide information about the structure's collapse performance using damage states of the FEMA P-58 criteria. The seismic performance was then presented with a fragility curve to illustrate the probability of building damage. The results show that the maximum base shear value is 3033 kN with a displacement of 0.063 m. At a target displacement of 0.027 m, the base shear is 2618 kN. The probability of structural damage within a category of extensive is 77% if an earthquake at the Design Basic Eartquake (DBE) level strike the building. The probability of structural damage becomes 50% extensive and 50% complete at the Maximum Considered Earthquake (MCE) level.
Numerical static-load test and earthquake simulation of a cable stayed bridge
Authors: Syamsi Muhammad Ibnu , Maulana Taufiq Ilham , Wang Chung-Yue
Published: September 2023

A bridge is an essential component of transportation networks and plays a crucial role in the operation of infrastructure, so maintaining this structure to guarantee the regular operation of bridges in a healthy condition is needed. The establishment of a bridge model numerically is a critical step of the bridge evaluation because many cases of the bridge test can be done numerically. The generated results can then be verified and adjusted with the real or full-scale test. This research aims to establish a numerical model of a cable-stayed bridge and perform numerical bridge tests and earthquake simulations. The targeted bridge is located in Taiwan, and it consists of four spans with three pylons. Static load tests are performed using a truck load set applied at each mid-span. Bridge displacement due to the truckloads is the primary concern of the static load test. Besides, dynamic bridge simulation under earthquake excitation is also simulated. On 18 September 2022, a destructive earthquake of moment magnitude (Mw) 7.1 occurred in Taitung County, southeastern Taiwan. Some infrastructures like bridges and buildings were damaged and even collapsed due to this earthquake. The bridge is simulated using the earthquake history record of the earthquake. The bridge's dynamical system properties are first outputted to see the bridge's natural frequencies and mode shapes. Displacement and stress history responses due to the earthquake excitation at some critical points are also evaluated. The simulation results can be a reference for real bridge testing.