bluuebunny/crossref_metadata_2025_split huggingface dataset:
Risk tolerance in youth with emerging mood disorders
Authors: Weinrabe Angé , Tran James , Hickie Ian B. 
Published: November 2023

AbstractReward-seeking behavior drives adolescents toward risky decision-making. As compared to their older and younger peers, adolescents experience higher rates of anxiety and depressive disorders, leading to impaired decision-making with negative consequences. At two time points, separated by 6–8 weeks, we measured risky and ambiguous choices concurrently with levels of dysregulated emotion for youth aged 16–25 (N = 30, mean age 19.22 years, 19 males) attending a youth mental health clinic. The Kessler Psychological Distress Scale (10 items) (K10), the Quick Inventory of Depressive Symptomatology Adolescent (17 items) (QIDS-A17) specifically designed for youth, and the Somatic and Psychological Health Report (12 items) (SPHERE-12) questionnaires were used to evaluate participant’s self-reported anxiety and depression scores. Risk and ambiguity tolerance was calculated at the individual and group level. At baseline, 25 (83%) participants were rated as experiencing a mental health condition, and 15 (50%) rated high on all three psychological questionnaires combined, scoring “severely” depressed and “severely” anxious. At follow-up, 25 returning participants, 80% (N = 20) remained distressed, with 11 continuing to rate high on all psychological scores. In Session 1, participants had a mean of approximately 14 risky choices (SD = 4.6), and 11 ambiguous choices (SD = 7.6), whilst in Session 2, participants’ mean equated to approximately 13 ambiguous choices (SD = 8.5), but their risk increased to 15 choices (SD = 6.5). Applying a multiple regression analysis at the group level, the data suggests that participants were risk averse (α = 0.55, SE = 0.05), and preferred making ambiguous choices (β = 0.25, SE = 0.04). These results suggest that high trait-like anxiety in youth is associated with risk intolerance. These findings may have implications for screening young people with emerging mood disorders.
Spatial distribution characteristics and influencing factors of traditional villages in Fujian Province, China
Authors: Ma Yan , Zhang Qilin , Huang Liyun 
Published: November 2023

AbstractAs the historical and contemporary values of Chinese traditional villages continue to emerge and the circumstances of the times change, their preservation has a lasting and far-reaching significance in promoting the revitalisation and sustainable development of China’s countryside. However, rapid urbanization began after China’s reform and opening up, and continuous urban expansion led to the rapid decline or even disappearance of these villages. Previous studies on village protection tend to focus on morphological studies from the perspective of individual units, and rarely discuss the influencing factors of spatial distribution. Therefore, there are certain deficiencies in revealing the distribution rules, which makes it difficult to fully carry out the protection work. The article reconstructs the traditional village system of Fujian Province, whose traditional villages cover both national and provincial historical and cultural villages and national and provincial traditional villages. The spatial distribution characteristics and influencing factors of traditional villages in Fujian Province were studied using 1,606 traditional villages of various levels as research objects. The results of the study show that: (1) the spatial distribution of traditional villages in Fujian Province is cohesive, with significant uneven distribution, and there are three high-density agglomerations and two sub-density agglomerations; (2) The spatial distribution shows a pattern of “large scattering, small concentration, more in mountainous areas and less in coastal areas”; (3) Topography, river systems, transportation and socio-economic conditions combine to influence the spatial distribution of traditional villages in Fujian Province, but the degree of influence varies. Physical and geographical conditions play a leading role in the distribution of traditional villages, and road traffic conditions and socio-economic conditions have a secondary impact on the distribution of traditional villages. There is an obvious agglomeration of traditional villages in the mountainous river areas, while there is a certain degree of negative correlation between road traffic conditions and socio-economic conditions and the number of traditional villages. (4) With the support of good policies and economic conditions, the protection and continuation of traditional villages can be promoted to a certain extent, and it is also conducive to the spread of local multicultural culture. Finally, corresponding policy recommendations are made for the conservation and sustainable development of traditional villages in Fujian Province.
The monetary policy pass-through mechanism: Is the search-for-yield incentive at work?
Authors: Huynh Japan 
Published: November 2023

AbstractThe paper investigates the possible mechanism behind the link between monetary policy and bank lending/risk-taking behaviors. Using a sample of Vietnamese commercial banks during 2007–2019, we find that the impact on bank output associated with monetary policy shocks is attributable to banks’ incentives to search for yield. Concretely, if interest rates remain lower amid monetary expansions, banks are likely to expand their lending activities more aggressively and take more risks to offset their reduced revenues. Moreover, this crucial supply-side effect is also at work for the bank liquidity creation channel of monetary policy transmission. Accordingly, we document that demotivated banks appear to undermine the impact of monetary policy on the core function of banks in creating liquidity to the real economy. Our finding is robust against a series of alternative monetary policy indicators, different bank output measures, multiple search-for-yield proxies, and substitute econometric methodologies. In sum, as the monetary policy pass-through transmission through the key banking channels is found due to banks’ own decisions, monetary authorities need to take this underlying mechanism into account when setting their monetary policy.
Hydroxypyridinate-bridged paddlewheel-type dirhodium complex as a catalyst for photochemical and electrochemical hydrogen evolution
Authors: Kataoka Yusuke , Sato Kozo , Yano Natsumi 
Published: November 2023

Electrochemical and photochemical hydrogen (H2) evolution activities of a 6-fluoro-2-hydroxypyridinate (fhp−)-bridged paddlewheel-type dirhodium (Rh2) complex, [Rh2(fhp)4], were investigated through experimental and theoretical approaches. In DMF, the [Rh2(fhp)4] underwent a one-electron reduction (assigned to Rh24+/3+) at −1.31 V vs SCE in the cathodic region. Adding trifluoroacetic acid as a proton source to the electrochemical cell containing [Rh2(fhp)4], the significant catalytic current, i.e., electrochemical H2 evolution, was observed; the turnover frequency and overpotential of electrochemical H2 evolution were 18 244 s−1 and 732 mV, respectively. The reaction mechanism of electrochemical H2 evolution catalyzed by [Rh2(fhp)4] in DMF was examined in detail by theoretically predicting the redox potentials and pKa values of the reaction intermediates using density functional theory calculations. The calculations revealed that (i) the formation of a one-electron reduced species, [Rh2(fhp)4]−, triggered for H2 evolution and (ii) the protonation and reduction processes of [Rh2(fhp)4]− to further reduced hydride intermediates proceeded directly via a concerted proton–electron transfer mechanism. Moreover, [Rh2(fhp)4] was shown to be a highly efficient H2 evolution catalyst (HEC) for photochemical proton reduction reactions when combined with an artificial photosynthetic (AP) system containing [Ir(ppy)2(dtbbpy)]PF6 and triethylamine, which served as a photosensitizer and a sacrificial electron donor, respectively. Under visible light irradiation, the total amount of H2 evolved and its turnover number (per Rh ion) were 1361.0 µmol and 13 610, respectively, which are superior to those of previously reported AP systems with rhodium complexes as HEC.
Numerical simulation of solar cell performance with copper-based layered perovskite using SCAPS-1D software
Authors: Thankappan Aparna 
Published: November 2023

Abstract
Perovskite solar cells (PSCs) have garnered extensive research interest due to their potential for efficient, flexible, and cost-effective solar energy production, making them suitable for wearable and low-cost applications. In this study, we successfully synthesized layered copper-based perovskite materials, and subsequently conducted simulations using the Solar Cell Capacitance Simulator SCAPS-1D. This study introduces, a PSC structure with (CH3NH3)2CuCl4 as the active layer. By employing a two-step chemical method, we have successfully synthesized (CH3NH3)2CuCl4, and its optical band gap was determined using Tauc’s extrapolation method. Utilizing the experimentally determined bandgap as the simulation input, we predicted a solar architecture consisting of glass substrate/fluorine-doped tin oxide/TiO2/(CH3NH3)2CuCl4/spiro-OMeTAD/Pt, which exhibited an impressive conversion efficiency of 27.93% along with a fill factor of 62.04%, J
sc of 34.39 mA cm−2, and V
oc of 1.31 V. Through the software, we conducted a comprehensive study on the impact of back metal contact, hole transport layer, electron transport layer, layer thickness, temperature, and defect density on the overall device performance. These results unveil the development of an environmentally friendly PSC based on methylammonium copper.
First-principles studies of oxygen interstitial dopants in RbPbI3 halide for perovskite solar cells
Authors: Yang Chongyao , Wu Wei , Choy Kwang-Leong 
Published: November 2023

Abstract
Recently perovskite solar cells (PSCs) have caught much attention. Oxygen atom (O1) and molecule (O2) are important dopants to influence the stability of the structural, electronic and optical properties, thus the performance of PSCs. RbPbX3-type perovskites have fantastic chemical stability and good power conversion efficiency. Here we have studied the effects of interstitial O1 and O2 on the structural properties, and hence the electronic structure of RbPbI3 from first principles. We have included the van der Waals (vdW) forces into our density-functional-theory calculations. The formation of dopant level within the pristine band gap has been found when incorporating oxygen. The defect level, dominated by oxygen and iodine, is above the valence band maximum by 0.5–1.3 eV, depending on the location of the defects in the bulk. In addition, we can see the bandwidths of the defect levels are very narrow, which could trap the electron and affect the transport properties. In addition, a metallic state has been found in our calculations for interstitial oxygen molecule when there are strong O–O, O–Pb, and O–I bonds, indicating the complex nature of oxygen-doped PSCs. The comparison between the defect formation energies when doping oxygen atom and molecules is consistent with the previous report about oxygen-molecule passivation of PSCs. Our work has therefore provided important theoretical insight to the effect of oxygen dopants on the electronic structure of RbPbI3.
Trajectories of square lattice staircase polygons
Authors: Janse van Rensburg E J 
Published: November 2023

Abstract
The distribution of monomers in a coating of grafted and adsorbing polymers is modelled using a grafted staircase polygon in the square lattice. The adsorbing staircase polygon consists of a bottom and a top lattice path (branches) and the asymptotic probability density that vertices in the lattice are occupied by these paths is determined. This is a model consisting of two linear polymers grafted to a hard wall in a coating. The probability that either the bottom path, or the top path, of a staircase polygon passes through a lattice site with coordinates

(
⌊
ϵ
n
⌋
,
⌊
δ

n

⌋
)

, for 0 < ϵ < 1 and δ ≥ 0, is determined asymptotically as n → ∞ . This gives the probability density of vertices in the staircase polygon in the scaling limit (as n → ∞ ):

P

r

f
,
(
both
)

(
ϵ
,
δ
)

=

δ

2

(
15

ϵ

2

1
−
ϵ

2

−
12

δ

2

ϵ
(
1
−
ϵ
)
+
4

δ

4

)

3

π

ϵ

7

1
−
ϵ

7

e

−

δ

2

/

ϵ
(
1
−
ϵ
)

.

The densities of other cases, grafted and adsorbed, and at the adsorption critical point (or special point), are also determined. In these cases the most likely and mean trajectories of the paths are determined. The results show that low density regions in the distribution induce entropic forces on test particles which confine them next to the hard wall, or between branches of the staircase polygon. These results give qualitative mechanisms for the stabilisation of a drug particle confined to a polymer coating in a drug delivery system such as a drug-eluding stent covered by a grafted polymer.
Non-thermal moduli production during preheating in α-attractor inflation models
Authors: Alam Khursid , Bastero-Gil Mar , Dutta Koushik , Ragavendra H.V. 
Published: November 2023

Abstract
Production of gravitationally coupled light moduli fields must be suppressed in the early universe so that its decay products do not alter Big Bang Nucleosynthesis (BBN) predictions for light elements. On the other hand, the moduli quanta can be copiously produced non-thermally during preheating after the end of inflation. In this work, we study the production of moduli in the α-attractor inflationary model through parametric resonances. For our case, where the inflationary potential at its minimum is quartic, the inflaton field self-resonates, and subsequently induces a large production of moduli particles. We find that this production is suppressed for small values of α. Combining semi-analytical estimation and numerical lattice simulations, we infer the parametric dependence on α and learn that α needs to be ≲ 10-8 m
Pl
2 to be consistent with BBN for 𝒪(1) coupling between inflaton and moduli. This in turn predicts an upper bound on the energy scale of inflation and on
the reheating temperature.
Planar matrices and arrays of Feynman diagrams
Authors: Cachazo Freddy , Guevara Alfredo , Umbert Bruno , Zhang Yong 
Published: November 2023

Abstract
Recently, planar collections of Feynman diagrams were proposed by Borges and one of the authors as the natural generalization of Feynman diagrams for the computation of k = 3 biadjoint amplitudes. Planar collections are one-dimensional arrays of metric trees satisfying an induced planarity and compatibility condition. In this work, we introduce planar matrices of Feynman diagrams as the objects that compute k = 4 biadjoint amplitudes. These are symmetric matrices of metric trees satisfying compatibility conditions. We introduce two notions of combinatorial bootstrap techniques for finding collections from Feynman diagrams and matrices from collections. As applications of the first, we find all 693, 13 612 and 346 710 collections for (k, n) = (3, 7), (3, 8) and (3, 9), respectively. As applications of the second kind, we find all 90 608 and 30 659 424 planar matrices that compute (k, n) = (4, 8) and (4, 9) biadjoint amplitudes, respectively. As an example of the evaluation of matrices of Feynman diagrams, we present the complete form of the (4, 8) and (4, 9) biadjoint amplitudes. We also start a study of higher-dimensional arrays of Feynman diagrams, including the combinatorial version of the duality between (k, n) and (n − k, n) objects.
Radiative decays
in covariant confined quark model*
Authors: Tran C. T. , Ivanov M. A. , Santorelli P. , Vo Q. C. 
Published: November 2023

Abstract
Radiative decays

are revisited in light of new experimental data from the BaBar and BESIII Collaborations. The radiative couplings

encoding nonperturbative QCD effects are calculated in the framework of the covariant confined quark model developed by us. We compare our results with other theoretical studies and experimental data. The couplings (in

)

and

calculated in our model agree with the corresponding experimental data

and

. The most interesting case is the decay

, for which a recent prediction based on light-cone sum rules at next-to-leading order

deviates from the first (and only to date) lattice QCD result

at nearly

. Our calculation yields

, which falls somehow between the two mentioned results, although it is larger than those predicted in other studies using quark models or QCD sum rules.
Modeling a new Gimbal System using Nonlinear ARX (NARX) Model
Authors: Osamah A. E , Hassrizal H. B. , Othman S. M. 
Published: November 2023

Abstract
A new 3-degree-of-freedom gimbal system design has been developed and experimented at Universiti Malaysia Perlis (UniMAP). The gimbal system is built from polylactic acid (PLA) using a 3D printer. Based on the analysis, the gimbal system can hold up to 23.45 kg and 69.90 MPa of stress. Thus, the gimbal system requires further analysis to investigate the system’s capability in terms of control and stability. Hence, this paper models the gimbal system to the mathematical modelling using the black-box technique with the Nonlinear ARX (NARX) model to achieve the objective. There are six regressor parameters set up to obtain the model where the input and output data for the gimbal axes (roll, pitch and yaw) are gathered from the experiment. The result shows that the best fitting percentage with low complexity is the 4th-order nonlinear regressor with 96.08% (yaw), 95.63% (roll) and 94.65% (pitch). Thus, the gimbal system shows that the model has high accuracy and is suitable to use for further control and stability analysis.
Assessment of magnetic field on body axis and orbit axis of RazakSAT in Near Equatorial Orbit using IGRF model
Authors: Hasan M Z , Fadly M , Said M A M , Hazadura N H , Khalid N S 
Published: November 2023

Abstract
Magnetometer is reference sensor of satellite that function to measure the vector of magnetic field during satellite enter the orbit. The magnetic field measurement vector will be employed in the Attitude Determination System (ADS) to calculate the satellite’s orientation with respect to the Earth. However, any misalignments or disturbances on the ADS can affect the orientation of the satellite in terms of the orbital position. Therefore, in this paper assessment of magnetic field on body axis and orbit axis of RazakSAT by using The International Geomagnetic Reference Field (IGRF) model. RazakSAT as references to verify the IGRF model by using residual analysis that percentage error less than 5% requirement from Astronautic Technology Sdn Bhd (ATSB). The result show, Y-axis and Z-axis from orbit frame meet the requirement of ATSB is less than 5%.
Simulation of RPC responses in mini-Iron Calorimeter for cosmic ray muon studies
Authors: John J.M. , Majumder G. , Pethuraj S. 
Published: November 2023

Abstract
A Prototype of the Iron Calorimeter for the India-based
Neutrino Observatory is currently running in Madurai, India. This
consists of twenty large area single gap Resistive Plate Chambers
(RPCs) of size, ∼ 185 cm × 175 cm sandwiched
between 11 layers of iron plates of thickness 5.6 cm. The total
size of the mini-Iron Calorimeter(mini-ICAL) is
4 m × 4 m × 1.2 m and having a weight of
85 tons is a (1/600) scaled-down version of the ICAL detector of
INO [1]. The detector is magnetized using iron plates
and two sets of copper coils, each coil has 18 turns. The central
region of the mini-ICAL, where the RPCs are placed, has a nearly
uniform magnetic field of 1.4 T, similar to the magnetic field in
the final ICAL detector. This prototype serves as the basis for the
design of the demonstrators, which closely mimics the
characteristics of a future ICAL. This detector is built to test the
final electronics in the fringe field of the magnet and also to
develop the experience to construct the ICAL detector.

The mini-ICAL has been operational since 2018 and collects cosmic
muon data with different configurations of RPC, and electronics,
which are continuously changing for various R&D efforts. Dedicated
efforts are made in parallel to measure the momentum and azimuthal
angle of μ+ and μ- independently, which could be an
important input to the cosmic neutrino event generators. To improve
the precision of those measurements a dedicated simulation effort
was made, particularly in the digitisation of the RPC signal for a
real detector simulation, where efficiency, noise rate, strip
multiplicity, etc. were matched with the real data collected during
runs at mini-ICAL.
The potential of modified karst water as a substitute for microalgae culture media
Authors: Pratiwi N T M , Widigdo B , Krisanti M , Ayu I P , Iswantari A 
Published: November 2023

Abstract
Karst water concocted culture medium which contains high concentration of complex minerals was presumed to support production of microalgae, such as Spirulina sp. (Arthrospira sp.), Chlorella sp., and Nannochloropsis sp. This study aims to evaluate the potential of enriched karst water medium to grow Spirulina sp., Chlorella sp., and Nannochloropsis sp. There were two batches of culture with different treatments of nutrient supplementary; the first was for Spirulina sp. and the second was for Chlorella sp. and Nannochloropsis sp. The results showed that all treatments were suitable for Spirulina sp. with different growth rates. The medium with 20:1 N/P ratio showed the best productivity for Chlorella sp., and 10:1 N/P ratio for Nannochloropsis sp. The pure karst water and all level as the nutrient modified karst water media showed a relatively similar growth rate of Spirulina sp. Furthermore, in the best medium for Chlorella sp. and Nannochloropsis sp. gave increasing density until the end of observation, instead of a death phase of commercial addition batch culture. Generally, modified karst water has the potential to be used as the microalgae growing medium.
Phytoplankton Community Dynamics in Sei Gesek Reservoir, Bintan Island
Authors: Apriadi T , Melani W R , Zulfikar A , Muzammil W , Sabriyati D 
Published: November 2023

Abstract
Bintan is a small island that has limited fresh water resources. Sei Gesek Reservoir is one of the drinking water sources in there. The aim of this research is to determine the dynamics of diversity and abundance phytoplankton in Sei Gesek Reservoir, Bintan Island, Riau Islands. Sampling was carried out at three area representing inlet, center, and outlet of Sei Gesek reservoir in periods 2016-2018. Phytoplankton samples were collected using plankton net by static method. Phytoplankton group were composed of 3 division: Chlorophyta, Cyanophyta, and Bacillariophyta. Each class of phytoplankton has dynamics of abundance and species each year. The highest average abundance was found in 2016 and then fluctuated to 2018. The highest species and abundance of the division were Chlorophyta, Cyanophyta, and Bacillariophyta, respectively. Phytoplankton community dynamics in Sei Gesek Reservoir is influenced by decreased water volume and acidic pH.