bluuebunny/crossref_metadata_2025 huggingface dataset:
Room-temperature topological spin textures and magnetic-field-induced skyrmion-bimeron switching in FeSnN3 monolayer
Authors: Yan Qingyu , Li Guannan , Zhang Bingwen , Gao Benling , Song Guang , Huang Xiaokun
Published: January 2025

Two-dimensional (2D) polar magnets have received considerable attention due to their intrinsic ability to host Dzyaloshinskii–Moriya interaction (DMI), which is crucial for generating topological spin textures such as skyrmions and bimerons. The ability to switch between skyrmions and bimerons is considered to be important for developing future computing architectures based on multiple different topological bits. Here, using first-principles calculations and Monte Carlo simulations, we predict that the FeSnN3 monolayer with a polar structure is a 2D ferromagnetic half-metal, exhibiting an out-of-plane magnetic anisotropy energy of 0.181 meV, a high Curie temperature TC of 510 K, and a substantial DMI of 2.96 meV. Micromagnetic simulations demonstrate that the DMI-induced skyrmions in the FeSnN3 monolayer can persist above room temperature under feasible magnetic fields. Notably, skyrmion-bimeron switching can be achieved by altering the direction of the external magnetic field. Our findings not only suggest that the FeSnN3 monolayer is a promising candidate for developing spintronic devices based on topological spin textures but also provide alternative insights into skyrmion-bimeron switching through magnetic field.
Nature and stability of the chemical bond in H3C–XHn (XHn = CH3, NH2, OH, F, Cl, Br, I)
Authors: Vermeeren Pascal , Bickelhaupt F. Matthias
Published: January 2025

We have quantum chemically analyzed the trends in bond dissociation enthalpy (BDE) of H3C–XHn single bonds (XHn = CH3, NH2, OH, F, Cl, Br, I) along three different dissociation pathways at ZORA-BLYP-D3(BJ)/TZ2P: (i) homolytic dissociation into H3C∙ + ∙XHn, (ii) heterolytic dissociation into H3C+ + −XHn, and (iii) heterolytic dissociation into H3C− + +XHn. The associated BDEs for the three pathways differ not only quantitatively but, in some cases, also in terms of opposite trends along the C–X series. Based on activation strain analyses and quantitative molecular orbital theory, we explain how these differences are caused by the profoundly different electronic structures of, and thus bonding mechanisms between, the resulting fragments in the three different dissociation pathways. We demonstrate that the nature and strength of a chemical bond are only fully defined when considering both (i) the molecule in which the bond exists and (ii) the fragments from which it forms or into which it dissociates.
Isovalent substitution-induced pseudodoping in ZrxTi1−xSe2 transition metal dichalcogenides
Authors: Merentsov A. I. , Píš I. , Shkvarin A. S. , Postnikov M. S. , Yarmoshenko Y. M. , Shkvarina E. G. , Titov A. A. , Onischenko A. O. , Titov A. N.
Published: January 2025

The crystal and electronic structure of ZrxTi1−xSe2 (0 < x < 1) compounds and their electrical resistivity have been studied in detail for the first time. A combination of soft x-ray spectroscopic methods (XPS, XAS, and ResPES) was used to investigate the electronic structure. The lattice parameters as a function of the metal concentration x obey Vegard’s law. It was shown that the substitution of Ti by Zr results in an increase in the Fermi energy, attributed to the lower binding energy of Zr 4d compared to Ti 3d in the ZrxTi1−xSe2 valence band. Given that the oxidation states of both Ti and Zr are +4, and the concentration of free charge carriers remains unchanged upon substitution, the observed effect is explained by a reduced density of electronic states near the Fermi level. The influence of temperature on the Ti 2p–3d and Zr 3p–4d ResPES spectra is interpreted in terms of pseudodoping occurring with the substitution of Ti by Zr.
Enhanced breakdown strength and reduced polarization hysteresis in relaxor ferroelectric polymers with increased gamma phase content for energy storage capacitors
Authors: Lin Renfan , Huang Shuangwu , Gong Weiping , Zhang Qiyan , Zhang Q. M.
Published: January 2025

Polymer dielectric energy storage capacitors play a vital role in modern electronic and electrical power systems, particularly in high-voltage environments. However, achieving both high energy density and charge–discharge efficiency presents a significant challenge for next-generation applications that demand miniaturization and compact design. In this study, we present relaxor ferroelectric terpolymers with an increased gamma (γ)-phase content, prepared through a facile and scalable interfacial engineering approach that incorporates ultra-low amounts of graphene oxide. The γ-phase crystals in the terpolymer reduce hysteresis losses and generate numerous deep traps, resulting in enhanced performance. These terpolymers achieve a high energy density of up to 15.2 J/cm3 and an improved breakdown strength of 562 MV/m, representing enhancements of 62% and 39.8%, respectively, compared to the pristine terpolymer. The results suggest that tuning the phase structure of relaxor ferroelectric terpolymers offers a pathway to developing ferroelectric polymers with enhanced energy density and charge–discharge efficiency for energy storage capacitors.
Microstructure modulation and mechanical properties of multicomponent Fe50Cr14Mo14C9B8Tm5 bulk metallic glass through controlled crystallization processing
Authors: Mi X. L. , Hu L. , Wu B. W. , Jing Y. H. , Wei B.
Published: January 2025

Fe50Cr14Mo14C9B8Tm5 bulk metallic glass was prepared at a cooling rate of 6.36 × 104 K s−1. Its Young's modulus and compressive strength were modulated through controlled crystallization processing. A low cooling rate induced the formation of the Tm2Mo2C3 phase while preserving free volume. Thus, the elastic deformation limit was increased to 2.39%. After low-temperature annealing, the (Fe, Cr)23(C, B)6 phase was formed at first. As the annealing temperature increased, four types of crystalline phases appeared as dispersions in this alloy, where the hardness of the Fe3Mo3C phase reached 32.5 GPa. Even when the annealing temperature reached 1260 K, the average grain size was only 180 nm. The large volume fraction of the Fe3Mo3C phase and uniform microstructure of crystallized alloy resulted in a high strength of 4.01 GPa and a low Young's modulus of 237.11 GPa.
Detonation product equation of state for overdriven detonations in triaminotrinitrobenzene-based plastic-bonded explosive
Authors: Qi Yasong , Zhao Yaqi , Tan Kaiyuan , Han Yong
Published: January 2025

Overdriven detonation waves with non-stationary, high-pressure states can be produced by high-velocity impacts or by converging detonation waves. A precise equation of states (EOS) of the detonation products is essential to evaluate detonation performance and working capacity. The Jones-Wilkins-Lee (JWL) EOS and its modified forms have an uneven ability in describing the states of detonation products; furthermore, the accuracy of the calculated sound speed is inadequate. This problem is solved by an improved EOS, which is presented by introducing a variable Grüneisen coefficient within JWL. First, the Hugoniot parameters are calculated based on JWL, Jones-Wilkins-Lee-Lee, and Jones-Wilkins-Lee-Tang, and the maximum errors in the prediction of the sound speed are all significant, ranging from 5% to 15%. An excellent agreement is obtained using our modified JWL EOS for Hugoniot pressure over a wide range from initial pressure to 90 GPa, and in the meantime the sound speed is calculated more accurately, with the maximum error being reduced to 2.14%. Then, an experiment of the head-on collisions of detonation waves is carried out to assess the viability of our optimized EOS for characterizing the dynamic evolution of the overdriven detonation process. Furthermore, the hydrodynamic code is modified to incorporate the improved EOS and the numerical simulation is implemented. A comparison between the numerical results and the experimental data confirms the applicability of the improved EOS, and it indicates that a more accurate EOS is obtained for the description of the overdriven detonation phenomenon.
Correlation between ferroelectricity and torsional motion of acetyl groups in tris(4-acetylphenyl)amine observed by muon spin relaxation
Authors: Nakamura J. G. , Hiraishi M. , Okabe H. , Koda A. , Kumai R. , Pratt F. L. , Kadono R.
Published: January 2025

It is demonstrated by muon spin relaxation and resonance experiments that the switchable spontaneous polarization of the organic ferroelectric compound tris(4-acetylphenyl)amine is governed by the local molecular dynamics of the acetyl group. The implanted muon forms paramagnetic states, which exhibit longitudinal spin relaxation due to the fluctuation of hyperfine fields exerted from unpaired electrons. The first-principle density functional theory calculations indicate that these states are muonated radicals localized at the phenyl group and on the carbon/oxygen of the acetyl group, thereby suggesting that the spin relaxation is dominated by the random torsional motion of an acetyl group around the C–C bond to the phenyl group. The stepwise change in the relative yield of radicals at T0≈350 K and the gradual increase in the spin relaxation rate with temperature (T) indicate that the torsional motion is significantly enhanced by thermal excitation above T0. This occurs concomitantly with the strong enhancement in the atomic displacement parameter of oxygen in the acetyl group (which is non-linear in T), indicating that it is the local molecular motion of the acetyl groups that drives the structural transition.
Coupling immersed boundary method with wall function for high Reynolds number compressible flows on adaptive Cartesian grids
Authors: Chen Hang , Wang Zhenming , Tian Linlin , Liu Jianming , Qin Ning , Zhao Ning
Published: January 2025

In this paper, a high Reynolds number compressible flow simulation method based on the immersed boundary method (IBM) is developed on the adaptive Cartesian grids to address two problems: one is the ability of large-scale Cartesian grid generation, and the other is the resolution of thin shear layers. For the former, an efficient automatic parallel generation method of adaptive Cartesian grids is proposed based on the k-d tree theory. The method has good parallel scalability and computational efficiency, e.g., the generation of 1.41 × 109 cells by 2048 cores takes only 0.40 min. For the latter, an IBM-wall function coupling method is designed to simulate geometrical configurations with high Reynolds numbers in the parallel framework. Numerical experiments show that the presented method can yield results consistent with the use of body-fitted grids. In conclusion, the presented method can realize a fully automatic simulation of high Reynolds number compressible flows, significantly reducing the labor cost in the computational fluid dynamics process, and can improve the accuracy and efficiency of engineering applications.
Nonradiative quenching of EPR signals in germanium-doped AlGaN: Evidence for DX-center formation
Authors: Forbus Jason , Wickramaratne Darshana , Lyons John L. , Zvanut M. E.
Published: January 2025

We present photo-electron paramagnetic resonance (EPR) measurements and first-principles calculations that indicate germanium (Ge) is a DX center in AlGaN. Our photo-EPR measurements on Ge-doped AlGaN samples show no EPR spectra in the dark, while persistent EPR spectra are observed upon photoexcitation with photon energies greater than ∼1.3 eV. Thermally annealing the samples decreased the EPR signal, with the critical temperature to quench the EPR signal being larger in the lower Al-content sample. Using detailed first-principles calculations of Ge in AlGaN, we show all of these observations can be explained by accounting for the DX configuration of Ge in AlGaN.
Sensitive hydrogen detection using off-axis integrated cavity output spectroscopy at 2.1 μm
Authors: Duan Kun , Hu Mai , Wang Zhen , Lyu Guanda , Ren Wei
Published: January 2025

Reliable hydrogen (H2) detection is essential for advancing hydrogen energy applications. In this study, we report a sensitive H2 detection method using off-axis integrated cavity output spectroscopy. A distributed-feedback laser with fiber output was used to target the H2 absorption transition near 2122 nm. The optical cavity was constructed using two spherical mirrors, each with a reflectivity of 99.985%, providing an effective absorption path length of 2500 m. The Galatry line shape function was selected to accurately fit the narrow absorption feature of H2. Furthermore, we achieved a 1.74-fold improvement in the signal-to-noise ratio by applying radio frequency white noise perturbations. The system's performance was demonstrated by measuring H2 mixtures across a broad concentration range from 1040 ppm to 20.24%. Finally, the Allan–Werle deviation analysis revealed a detection limit of 53 ppm H2 at an average time of 400 s.
Could metabolic imaging and artificial intelligence provide a novel path to non-invasive aneuploidy assessments? A certain clinical need
Authors: Horta Fabrizzio , Sakkas Denny , Ledger William , Goldys Ewa M. , Gilchrist Robert B.
Published: January 2025

Pre-implantation genetic testing for aneuploidy (PGT-A) via embryo biopsy helps in embryo selection by assessing embryo ploidy. However, clinical practice needs to consider the invasive nature of embryo biopsy, potential mosaicism, and inaccurate representation of the entire embryo. This creates a significant clinical need for improved diagnostic practices that do not harm embryos or raise treatment costs. Consequently, there has been an increasing focus on developing non-invasive technologies to enhance embryo selection. Such innovations include non-invasive PGT-A, artificial intelligence (AI) algorithms, and non-invasive metabolic imaging. The latter measures cellular metabolism through autofluorescence of metabolic cofactors. Notably, hyperspectral microscopy and fluorescence lifetime imaging microscopy (FLIM) have revealed unique metabolic activity signatures in aneuploid embryos and human fibroblasts. These methods have demonstrated high accuracy in distinguishing between euploid and aneuploid embryos. Thus, this review discusses the clinical challenges associated with PGT-A and emphasizes the need for novel solutions such as metabolic imaging. Additionally, it explores how aneuploidy affects cell behaviour and metabolism, offering an opinion perspective on future research directions in this field of research.
The role of metonymy in social identity
Authors: Dilkes Jane
Published: January 2025

In this study the role of metonymy in relation to social identity is investigated in naturally occurring internet
discourse of social groups. Two Reddit subreddits banned for promoting hate based on identity are compared with two unbanned
subreddits that predominantly relate to the same gender-focused concerns. It is found that metonymies to reference social identity
are more prevalent in the two banned subreddits, where they represent both social in-groups, and out-groups. Analysis of their use
in conjunction with other variables identified as having psychological significance finds that each metonymy has a particular role
and psychological characterisation. And consideration of diachronic change in the prevalence and cooccurrence of the metonymies
provides insights into the evolution of the identity and concerns of the groups. It is concluded that metonymies at the group
level support access to and reification of evolving group-specific conceptualisations, and that this in turn supports group
identity. Considering metonymies of social groups in large corpora may thus support understanding of group-specific attitudes, and
their evolution over time, including in relation to potential hatefulness of discourse.
Translation of unspliced retroviral genomic RNA in the host cell is regulated in both space and time
Authors: Leon-Diaz Felipe , Chamontin Célia , Lainé Sébastien , Socol Marius , Bertrand Edouard , Mougel Marylène
Published: January 2025

Retroviruses carry a genomic intron-containing RNA with a long structured 5′-untranslated region, which acts either as a genome encapsidated in the viral progeny or as an mRNA encoding the key structural protein, Gag. We developed a single-molecule microscopy approach to simultaneously visualize the viral mRNA and the nascent Gag protein during translation directly in the cell. We found that a minority of the RNA molecules serve as mRNA and that they are translated in a fast and efficient process. Surprisingly, viral polysomes were also observed at the cell periphery, indicating that translation is regulated in both space and time. Virus translation near the plasma membrane may benefit from reduced competition for ribosomes with most cellular cytoplasmic mRNAs. In addition, local and efficient translation must spare energy to produce Gag proteins, where they accumulate to assemble new viral particles, potentially allowing the virus to evade the host’s antiviral defenses.
Reliable quantification of neural entrainment to rhythmic auditory stimulation: simulation and experimental validation
Authors: Xu Yiwen , Tan Xiaodan , Luo Minmin , Xie Qiuyou , Yang Feng , Zhan Chang’an A
Published: January 2025

Objective. Entrainment has been considered as a potential mechanism underlying the facilitatory effect of rhythmic neural stimulation on neurorehabilitation. The inconsistent effects of brain stimulation on neurorehabilitation found in the literature may be caused by the variability in neural entrainment. To dissect the underlying mechanisms and optimize brain stimulation for improved effectiveness, it is critical to reliably assess the occurrence and the strength of neural entrainment. However, the factors influencing entrainment assessment are not yet fully understood. This study aims to investigate whether and how the relevant factors (i.e. data length, frequency bandwidth, signal-to-noise ratio (SNR), center frequency, and the constant component of stimulus-response phase-difference) influence the assessment reliability of neural entrainment. Approach. We simulated data for 28 scenarios to answer above questions. We also recorded experimental data to verify the findings from our simulation study. Main results. A minimal data length is required to achieve reliable neural entrainment assessment, and this requirement critically depends on the bandwidth and SNR, but is independent of the center frequency and the constant component of stimulus-response phase-difference. Furthermore, changing of bandwidth is accompanied by the change of SNR. Significance. The present study has revealed how data length, bandwidth, and SNR critically affect the assessment reliability of neural entrainment. The findings provide a foundation for the parameter setting in experiment design and data analysis in neural entrainment studies. While this study is within the context of rhythmic auditory stimulation, the conclusions may be applicable for neural entrainment to other rhythmic stimulations.
First-in-human experience performing high-resolution cortical mapping using a novel microelectrode array containing 1,024 electrodes
Authors: Konrad Peter E , Gelman Kate R , Lawrence Jesse , Bhatia Sanjay , Dister Jacqueline , Sharma Radhey , Ho Elton , Byun Yoon Woo , Mermel Craig H , Rapoport Benjamin I
Published: January 2025

Objective: Localization of function within the brain and central nervous system is an essential aspect of clinical neuroscience. Classical descriptions of functional neuroanatomy provide a foundation for understanding the functional significance of identifiable anatomic structures. However, individuals exhibit substantial variation, particularly in the presence of disorders that alter tissue structure or impact function. Furthermore, functional regions do not always correspond to identifiable structural features. Understanding function at the level of individual patients—and diagnosing and treating such patients—often requires techniques capable of correlating neural activity with cognition, behavior, and experience in anatomically precise ways. Approach: Recent advances in brain–computer interface technology have given rise to a new generation of electrophysiologic tools for scalable, nondestructive functional mapping with spatial precision in the range of tens to hundreds of micrometers, and temporal resolutions in the range of tens to hundreds of microseconds. Here we describe our initial intraoperative experience with novel, thin-film arrays containing 1024 surface microelectrodes for electrocorticographic mapping in a first-in-human study. Main results: Six patients undergoing standard electrophysiologic cortical mapping during resection of eloquent-region brain tumors consented to brief sessions of concurrent mapping (micro-electrocorticography) using the novel arrays. Three patients underwent motor mapping using somatosensory evoked potentials while under general anesthesia, and three underwent awake language mapping, using both standard paradigms and the novel microelectrode array. Somatosensory evoked potential phase reversal was identified in the region predicted by conventional mapping, but at higher resolution (0.4 mm) and as a contour rather than as a point. In Broca’s area (confirmed by direct cortical stimulation), speech planning was apparent in the micro-electrocorticogram as high-amplitude beta-band activity immediately prior to the articulatory event.Significance: These findings support the feasibility and potential clinical utility of incorporating micro-electrocorticography into the intraoperative workflow for systematic cortical mapping of functional brain regions.
Explicit dynamical properties of the Pelikan random map in the chaotic region and at the intermittent critical point towards the non-chaotic region
Authors: Monthus Cécile
Published: January 2025

The Pelikan random trajectories

x
t

∈
[
0
,
1
[

are generated by choosing the chaotic doubling map

x

t
+
1

=
2

x
t

[

mod

1
]

with probability p and the non-chaotic half-contracting map

x

t
+
1

=

x
t

2

with probability

(
1
−
p
)

. We compute various dynamical observables as a function of the parameter p via two perspectives. In the first perspective, we focus on the closed dynamics within the subspace of probability densities that remain constant on the binary-intervals

x
∈
[

2

−
n
−
1

,

2

−
n

[

partitioning the interval

x
∈
[
0
,
1
[

: the dynamics for the weights

π
t

(
n
)

of these intervals corresponds to a biased random walk on the half-infinite lattice

n
∈
{
0
,
1
,
2
,
.
.
+
∞
}

with resetting occurring with probability p from the origin n = 0 towards any site n drawn with the distribution

2

−
n
−
1

. In the second perspective, we study the Pelikan dynamics for any initial condition x
0 via the binary decomposition

x
t

=

∑

l
=
1

+
∞

σ
l

(
t
)

2
l

, where the dynamics for the half-infinite lattice

l
=
1
,
2
,
.
.

of the binary variables

σ
l

(
t
)
∈
{
0
,
1
}

can be rephrased in terms of two global variables: zt
corresponds to a biased random walk on the half-infinite lattice

z
∈
{
0
,
1
,
2
,

…

+
∞
}

that may remain at the origin z = 0 with probability p, while

F
t

∈
{
0
,
1
,
2
,

…

,
t
}

counts the number of time-steps

τ
∈
[
0
,
t
−
1
]

where

z

τ
+
1

=
0
=

z

τ

and represents the number of the binary coefficients of the initial condition that have been erased. We discuss typical and large deviations properties in the chaotic region

1
2

<
p
<
1

as well as at the intermittent critical point

p
c

=

1
2

towards the non-chaotic region

0
<
p
<

1
2

.
Flood Risk Mapping and Community Adaptation Strategies in New Capital City Location
Authors: Kumalawati Rosalina , Normelani Ellyn , Anastasia Muhtar Ghinia , Yuliarti Astinana , Putra Danarto Wisnu , Tri Raharjo Jany , Wahyu Budiman Puput , Hendra Murliawan Karnanto , Nurita Anggraini Rizki , Prasakti Yogi
Published: January 2025

Flooding in New Capital City construction site in East Kalimantan is one of the most frequent and severe disasters. The frequency and impact of floods are so severe that it is very important to carry out research on flood disaster risk mapping and community adaptation strategies to it. There are two research objectives; (1) to develop a flood risk map, and (2) to knowing community adaptation strategies in new capital city. In order to ascertain both objectives, interviews were conducted in conjunction with the administration of questionnaires to members of the population in all areas of East Kalimantan, which serves as the host region for the development project. The sample was selected using the stratified random sampling method. The research employs a quantitative descriptive analysis approach, utilising statistical tools to examine community adaptation strategies. While satellite imagery is used to map flood risk and remote sensing techniques is used to analyse flood risk. Flood risk mapping show that East Kalimantan Province has a high risk of floods. Meanwhile, adaptation strategies to deal with floods including physical such as drainage adaptation, water absorption improvement, etc and non-physical strategies such as community education and socialization, etc. The results of the existing mapping and adaptation strategies can be used by relevant officials to creating such programs and policies like evacuation routes to minimise the negative impacts of flood disasters. The negative impacts of flood risk can be minimised.
The level of dependency on direct benefits from Community Forestry (HKm) in Mattirowalie, Barru Regency, South Sulawesi
Authors: Sabar A , Najmiah D , Alam S
Published: January 2025

The level of dependency on direct benefits from forest products, especially for communities living near the forest, continues to increase due to population growth. This situation poses challenges, as the rising village population may lead to conflicts of interest and resource use that surpasses the area’s carrying capacity. To mitigate these conflicts, the government initiated a social forestry program known as Community Forestry (HKm). One such program is implemented in Mattirowalie, Barru Regency. This study aims to calculate the total income and evaluate the level of community dependency on the Community Forestry program in Mattirowalie Village, Barru Regency, South Sulawesi. Data collected were analyzed using income analysis (production costs, revenue, and income), contribution analysis, and dependency level analysis. Results show that the average income earned by farmers is IDR 65,853,090 per year, with a relatively low community dependency level of 25%. This low dependency is attributed to the focus solely on direct economic benefits, excluding significant contributions from invaluable forest ecosystem services.
The renewable energy potential mapping of each district in Cilacap Regency
Authors: Rahmawati Arfita , Ariawan Radhi
Published: January 2025

As the population increases, greater energy consumption is required. Energy consumption of oil and gas supplies is a current problem. Cilacap Regency, which in 2021-2023 will experience an increase in population of 1.2% each year, can create new issues regarding energy consumption. The unmapped renewable energy potential in Cilacap Regency is a problem in providing locations for renewable energy. This research aims to map the potential for renewable energy in Cilacap, by finding areas with the potential for renewable energy development. This research uses quantitative data obtained from institutions and measurements in the field. Renewable energies are mapped in this biogas, wind, and solar energy. The data analysis technique uses Geographic Information System (GIS) analysis to identify renewable energy potential in Cilacap Regency. Based on the research results, the sub-districts that have the potential to develop wind energy are all sub-districts in Cilacap except for Dayeuhluhur, Majenang, and Wanareja sub-districts. Potential for solar energy in Binangun, Kroya, Nusawungu, Maos, Adipala, and Sampang Districts. The largest biogas energy potential is in Majenang, followed by Karangpucung, Jeruklegi, and Adipala. Adipala Regency has three potentials to develop renewable energy in this area.
Identification of building materials at airports as a stimulant of the greenhouse gas effect
Authors: Dyah S , Pradnya P , Yuliani Sri , Sumadyo Amin
Published: January 2025

Airports are one of the infrastructure facilities that require the supply of electronic energy in aircraft mobility, office activities and supporting facilities in massive quantities. Infrastructure operations, reduction of open space on land, human and vehicle activities, turned out to be factors causing the increase in environmental temperature. In addition to aircraft emissions being one of the largest carbon emitters at the airport, it turns out that the use of rigid fabricated building materials also causes carbon emissions. Although such impacts are long-term and intangible, they turn out to be the cause of Greenhouse Gas (GHG) instability. The research method used is a combination of embedded mixed methods in the form of qualitative and quantitative descriptions. The results of observations and literature data on the research object were obtained through primary qualitative description. Meanwhile, the analysis of observation data and literature data is conducted through the secondary qualitative method. The results of the analysis obtained are (1) the flexibility of the dominant composition in natural materials and non-dominant in fabricated materials, to be able to anticipate and control environmental quality degradation; (2) environmental temperature rehabilitation by utilizing the pores of natural materials to be able to absorb & reduce the heat temperature of the environment; and (3) the spread of sunlight can be reduced by the deflection of light through the vertical maze plan.
Sustainability Concept Uma Lisan Manekawaik Space of Suku Suai Loro in Timor-Leste
Authors: Maria Peregrina Lim Godinho Suzi , Ali Ikhsan Fauzan , Joko Cahyono Untung
Published: January 2025

Uma Lisan Manekawaik is one of the rumah adat in the suku Suai Loro, which was built by the Tetum Terik community according to tradition and cultural heritage. Symbolically, it represents a group of descendants and is passed down from generation to generation. This study aims to identify the sustainability concept in the Uma Lisan Manekawaik space of suku Suai Loro in Timor-Leste. This research uses a qualitative approach with descriptive methods. The results of this research indicate that Uma Lisan Manekawaik is a stage building built for various community life activities according to environmental conditions. There are five concepts of space division, namely Tatetek, Labis Kraik, Labis Leten, Uma Laran, and Labisraen. Studying the sustainability concept in the Uma Lisan space has an important role in the preservation of traditional houses in Timor-Leste. This research contributes to the development of knowledge in the field of preserving the built environment, especially traditional residential architecture.
Risk communication strategies in the tourism industry in disaster prone areas
Authors: Agustine Nuriman Dian , Hidayat Muhamad
Published: January 2025

Indonesia as the third most disaster-prone country in the world. This is due to the frequency with which natural disasters occur in Indonesia. Crisis management and disaster mitigation will be one of the policy orientations for developing tourism and the creative economy in 2023, with the objective of strengthening the contribution of tourism and the creative economy to national economic resilience. Several tourism managers in areas prone to natural disasters do have not an understanding of the communication risks involved in mitigating potential natural disaster threats. The objective of this qualitative descriptive research is to identify a risk communication strategy for the tourism industry in disaster-prone areas. The perception of fundamental risk determines the risk communication strategy. This article utilizes the pre-disaster phase of the disaster management cycle in the ‘Principles of Emergency Planning and Management’ to develop a risk communication strategy for the tourism industry in disaster-prone areas. The article findings identified a six-step risk communication strategy for the tourism industry in disaster-prone areas: conducting a situation analysis by examining the potential based on the geographical conditions of the tourist area; identifying potential risks based on stakeholders; developing a risk communication plan for each potential risk that is divided into internal and external communication; and establishing a crisis communications team.
Study of users’ participation factor in e-cigarette waste management in Surabaya City
Authors: Tahipa Gymnastiar Aditya , Wilujeng Susi A.
Published: January 2025

The increase in the prevalence of e-cigarette users will be in line with an increase in the amount of e-cigarette waste (ECW). The use of e-cigarettes is a general hazardous waste and requires a plan to properly manage ECW. This study is necessary to describe the factors influencing the management of ECW. Study on user participation factors expected to be a reference in planning ECW management strategies. This research was conducted by surveying several e-cigarette users in Surabaya, with an estimated total of 28.958. The survey was designed based on the Theory of Planned Behavior, which is commonly used to describe behaviors. The questionnaire included several instruments related to knowledge about ECW and the main factors of the theory of planned behavior. Correlations between variables were analyzed using the Statistical, Product, and Service Solution software. The results indicate that users have high knowledge about ECW and how to handle it. Knowledge weakly forms attitudes toward behavior (rs = 0,253) and Perceived Behavioral Control (rs = 0,221) but does not yet form respondents’ subjective norms (Sig: 0,063 > 0,05). Intention was strongly formed by attitudes toward behavior (rs = 0,627) and Perceived Behavioral Control (rs = 0,665), and weakly form by Subjective Norm (rs = 0,362). It is recommended that specific regulations be established to govern the management of ECW to encourage better handling of ECW. Additionally, a centralized waste management program is needed to make users’ easier to properly dispose of ECW.
Sustainable Construction Structural System on the Uma Lulik in Baricafa Timor-Leste
Authors: dos santos Júlio , Sunoko Kahar , Setyo Nugroho Purwanto
Published: January 2025

Uma Lulik in Baricafa Village is a traditional architectural work that represents the original culture of the Baricafa tribe. The structure and construction system of Uma Lulik looks simple, like most traditional buildings consisting of head, body and foot structures, but is able to survive and adapt to various changes in environmental conditions. The purpose of this study is to identify sustainable concepts in the structure and construction system of the Uma Lulik building. The research method uses a mixed quantitative-descriptive qualitative method. Observation and documentation were conducted on the building, including its structure and construction, through measurement and redrawing of the dimensions of the components and construction techniques. Interviews were conducted to explore understanding or knowledge, through informants and sources to find out explanations of technical aspects, cultural aspects, and environmental aspects. Data processing included analysis, conclusion and verification, and narration of research results. Analysis by interpreting the data, then verified both through theoretical dialog and other sources in the field. Finally, the last step is the research results in the form of qualitative narrative writing (descriptive-analytical). The results of the study indicate that there is a structural system that uses continuous joints reinforced with dowels, a placement system, ties with shaking joint construction and a knock down structure that has a high level of adaptation to local conditions both in material selection and design adaptation to the environment. By understanding the structure and construction system, Uma Lulik can be preserved as a valuable cultural heritage of the Timor Leste community.
The impact of economic factors on annual waste generation in Indonesia
Authors: Vahmanetta Alika
Published: January 2025

Indonesia’s annual waste generation is expected to continue to increase in line with economic development. The existence of waste has a negative impact on environmental quality. Improper waste management and low public awareness of protecting the environment can cause serious pollution and disrupt public health. This study aims to analyze the influence of economic factors on environmental quality in terms of annual waste generation in 34 Indonesian provinces from 2019 to 2022. This study uses the Error Correction Model (ECM) panel data regression analysis method. The results showed that there is a positive and significant influence between government expenditure and human development index on annual waste generation Indonesia in the long and short term. The gross regional domestic product shows a positive and significant influence on annual waste generation Indonesia in the long term, while in the short term there is no significant effect. The foreign direct investment is known to have a negative and insignificant influence on annual waste generation Indonesia in both the long and short term.
Income contribution from forest honey: digital era opportunities for economic and environmental sustainability in Sumbawa
Authors: Yumantoko  , Al Hasan Rubangi , Wahyono Eko , Wicaksono Arditya , Agustine Restiana , Ishak Andi , Manan Abdul
Published: January 2025

Non-timber forest products (NTFPs) are believed to benefit environmental sustainability and local community welfare significantly. However, limited information regarding the potential household income from forest honey hunting has led to skepticism, prompting some community members to convert forests to other uses for economic reasons. This study aims to analyze the contribution of forest honey hunting in Sumbawa to family income and to explore strategies to enhance the value of honey production, providing hope for sustainable practices and environmental conservation in the digital era. The research was conducted on the island of Sumbawa using data collection methods such as interviews, observations, and literature reviews. The calculations were made by determining the percentage of the honey hunting sector in the overall income and then analyzed descriptively. The results show that in Bima Regency, the contribution was 23%, and in Sumbawa Regency, it was 30% of the total income of honey hunters. These findings demonstrate that this commodity can support the economy of honey-hunting families during urgent cash needs. However, income diversification is necessary because honey is only available during certain months of the year. Many parties have worked towards sustainable practices to enhance the value of honey production. For example, several civil groups have adopted sustainable harvesting practices believed to improve forest honey productivity and reduce environmental damage. The study also indicates that many aspects of production need improvement, including marketing, which must adapt to digital trends that offer many opportunities, especially for hunters. Therefore, collaboration among various stakeholders is essential to achieving significant benefits for environmental sustainability and community welfare.
Measuring electronic road pricing with MICMAC analysis: A case study of Jakarta, Indonesia
Authors: Wicaksono Arditya , Andari Tania , Nul Hakim Lukman , Alamsyah Purnama , Wijaya Gustaf
Published: January 2025

The Provincial Government of DKI Jakarta is striving to implement a road pricing policy aimed at reducing congestion and encouraging the use of public transportation. This policy is expected to provide solutions to various problems caused by heavy traffic in Jakarta, such as economic, health, and environmental impacts. However, the dynamics of this policy has triggered pro and con responses by the public. Some parties support it, considering it capable of reducing the number of private vehicles on the road, while others oppose it, arguing that it could burden private vehicle users. This study was conducted using a qualitative approach through MICMAC (Matrix of Cross Impact Multiplications Applied to a Classification) analysis. MICMAC analysis will identify key factors, classify factors, and visualize dynamics, helping to understand the interactions between factors and thus enable better decision-making, which is highly beneficial for policymakers. There is a common thread that this policy is perceived as unpopular, although technically, Jakarta needs an advanced connectivity policy to achieve more efficient and environmentally friendly mobility.
Fat, protein content in Hermetia Illucens due to feeding papaya, moringa leaves, and snails
Authors: Khalid Al Hafi Muh , Nurhadi Firman Ahmad , Ikram Ramadhan Muhammad , Khairul Fath Muh , Rimantho Dedi , Sukriyati
Published: January 2025

Indonesia is a tropical country rich in biological resources. However, the main problem currently facing Indonesia is the accumulation of waste, especially organic waste, which accounts for 40.7% of the waste generated by Indonesian society. This research provides innovation in organic waste processing by developing and utilizing maggots by feeding papaya leaves, moringa leaves and snails in reducing organic waste. The research approach used was a quantitative descriptive approach. The study was designed with three different treatments, as follows: Treatment A: Moringa leaves & rice bran; Treatment B: papaya leaves & rice bran; Treatment C: snail & rice bran. Examination of protein content was carried out in three stages, namely deconstruction, distillation, and titration, which were then calculated using the basic method of calculating nitrogen content which was converted into protein content associated with the Kjeldahl method. Meanwhile, the examination of fat content was carried out with a general calculation to determine the fat content in a sample, namely by comparing the weight of the initial sample with the weight of fat that was successfully extracted. The results showed that the highest protein content was found in maggots fed with snail food (40.77%) and the highest fat content was found in maggots fed with Moringa leaves (22.03%). This research can increase the economic value of maggot as animal feed, farmers can choose the right type of feed to produce maggot with the required protein or fat content, and can encourage the development of the maggot industry in Indonesia, both for waste management and as an animal feed commodity.
The relationship between environmental sustainability and financial constraints: Evidence from Indonesian firms
Authors: Nurfadia Futri Inas , Indah Pratiwi Desti , Saktiawan Bimo , Risfandy Tastaftiyan
Published: January 2025

As attention to environmental sustainability increases, firms are being encouraged to implement environmental, social, and governance (ESG) practices. In Indonesia, this support is evident in the requirement for all firms listed on the Indonesia Stock Exchange (IDX) to report their ESG practices. This research seeks to determine whether firms with high environmental sustainability scores are associated with financial constraints. We used data from 65 non-banking firms in Indonesia for the period from 2013 to 2022 to answer this research question. The findings of this study suggest that firms with high scores for environmental sustainability practices are more likely to face financial constraints. This could be due to the fact that, within Indonesia, such practices are predominantly adopted by smaller and newer firms. On the other hand, the leverage measure indicates that firms with robust environmental sustainability practices typically have lower levels of debt. Our research findings suggest that firms should be more proactive in improving their environmental compliance both larger and small firms through active supervision from independent boards to increase the firm’s financial access and avoid financial constraints.
Assessing the spatiotemporal precipitation trends from ERA5-Land over Indonesia region
Authors: Linarka Utoyo A. , Tambunan Mangapul P. , Kusratmoko Eko , Latifah Arnida L.
Published: January 2025

The availability and accuracy of high-resolution spatial and temporal climate data are required for various climate-related analyses, especially in areas with varying topography and climate. The long-term ERA5-Land reanalysis data from the European Centre for Medium-Range Weather Forecast (ECMWF) combines climate model and observation data from around the world into a complete and consistent collection with a spatial resolution of 0.1°. This high-resolution climate data is considered to be a reliable gridded dataset spanning various regions. Due to the scarcity of ground-based data in Indonesia, ERA5-Land is expected as an alternative to represent the climate condition. However, a comprehensive assessment prior to usage should be conducted. This study evaluates the proficiency of ERA5-Land based on observation data from the Climate Hazard Group InfraRed Precipitation with Station data (CHIRPS) to represent the precipitation variability over Indonesia during 1990-2022. Comprehensive investigations on the spatial-temporal dynamics of precipitation are presented. The ERA5-Land precipitation trend shows a similar pattern in annual total accumulated precipitation and precipitation cycle to CHIRPS observations. In areas with monsoon patterns like south Sumatera, Java, southern Kalimantan, Sulawesi, and part of Papua, low bias is observed often during the June-July-August (JJA) dry season, while high bias is observed often during the December-January-February (DJF) and September-October-November (SON). The similar observational trends and acceptable bias of ERA5-Land precipitation data convince the use of the data in simulating precipitation variability in the Indonesian region, which is essential for further climate studies.
Spatial effects on air quality due to the capital city relocation
Authors: Nihayah D.M. , Sundoro F.M. , Masluhah L
Published: January 2025

This study aims to analyze the spatial effects of air quality determinants in Kalimantan. The research method was quantitative utilizing secondary data. The technique used was spatial econometrics with the Spatial Durbin Model (SDM). The results indicate spatial dependence of air quality between a region and its neighboring areas in Kalimantan. Per capita income and population density have an impact on air quality within their region. Meanwhile, per capita income, population density, forest fires, and the number of vehicles in neighboring areas also influence the air quality in a region. The findings of this study highlight the importance of designing mitigation strategies to achieve sustainable development in Kalimantan, considering that population growth and economic activity have the potential to threaten air quality. The interaction and spatial dependence of air quality between regions necessitate coordinated regulations, including monitoring and supervision, to ensure that economic activities in Kalimantan comply with applicable environmental quality standards.