bluuebunny/crossref_metadata_2025_split huggingface dataset:
Validation of Three Models for Prediction of Blood Transfusion during Cesarean Delivery Admission
Authors: Bruno Ann M. , Federspiel Jerome J. , McGee Paula , Pacheco Luis D. , Saade George R. , Parry Samuel , Longo Monica , Tita Alan T.N. , Gyamfi-Bannerman Cynthia , Chauhan Suneet P. , Einerson Brett D. , Rood Kara , Rouse Dwight J. , Bailit Jennifer , Grobman William A. , Simhan Hyagriv N. ,   for the Eunice Kennedy Shriver National Institute of Child Health Human Development Maternal-Fetal Medicine Units Network
Published: December 2023

Objective Prediction of blood transfusion during delivery admission allows for clinical preparedness and risk mitigation. Although prediction models have been developed and adopted into practice, their external validation is limited. We aimed to evaluate the performance of three blood transfusion prediction models in a U.S. cohort of individuals undergoing cesarean delivery.
Study Design This was a secondary analysis of a multicenter randomized trial of tranexamic acid for prevention of hemorrhage at time of cesarean delivery. Three models were considered: a categorical risk tool (California Maternal Quality Care Collaborative [CMQCC]) and two regression models (Ahmadzia et al and Albright et al). The primary outcome was intrapartum or postpartum red blood cell transfusion. The CMQCC algorithm was applied to the cohort with frequency of risk category (low, medium, high) and associated transfusion rates reported. For the regression models, the area under the receiver-operating curve (AUC) was calculated and a calibration curve plotted to evaluate each model's capacity to predict receipt of transfusion. The regression model outputs were statistically compared.
Results Of 10,785 analyzed individuals, 3.9% received a red blood cell transfusion during delivery admission. The CMQCC risk tool categorized 1,970 (18.3%) individuals as low risk, 5,259 (48.8%) as medium risk, and 3,556 (33.0%) as high risk with corresponding transfusion rates of 2.1% (95% confidence interval [CI]: 1.5–2.9%), 2.2% (95% CI: 1.8–2.6%), and 7.5% (95% CI: 6.6–8.4%), respectively. The AUC for prediction of blood transfusion using the Ahmadzia and Albright models was 0.78 (95% CI: 0.76–0.81) and 0.79 (95% CI: 0.77–0.82), respectively (p = 0.38 for difference). Calibration curves demonstrated overall agreement between the predicted probability and observed likelihood of blood transfusion.
Conclusion Three models were externally validated for prediction of blood transfusion during cesarean delivery admission in this U.S. cohort. Overall, performance was moderate; model selection should be based on ease of application until a specific model with superior predictive ability is developed.
Key Points
How syntactic gradience in L1 affects L3 acquisition
Authors: Żychliński Sylwiusz , Skałba Anna , Wrembel Magdalena , Kaźmierski Kamil 
Published: December 2023

Abstract
The article reports on a longitudinal study of syntactic cross-linguistic influence (CLI) among L1 Polish learners
of L2 English and L3 Norwegian. The study mainly aimed to determine the influence of gradience in L1 on third language
acquisition. To this end, four syntactic properties were tested, two of which exhibit similarity between Polish and Norwegian
(subject-oriented possessive pronouns and adverb placement), and the other two – between English and Norwegian (definite and
indefinite articles). A group of 24 learners of Norwegian participated in an acceptability judgment task, which was administered
at three data collection times in all three languages. It aimed not only to determine the presence (and sources) of CLI, but also
to observe how gradience in L1 affects the assessment of equivalent properties in L3. In order to assess the role played by
gradience, the trilinguals’ performance was compared to that of a control group of English-Norwegian bilinguals. The data were
analyzed with mixed-effects ordinal logistic regression modelling, which showed statistically significant differences in the
ratings of articles between the two groups. We attribute this finding to gradient acceptability characterizing subject-oriented
pronouns and adverb placement in Polish, which is a potential source of non-facilitative CLI.
“Let’s Just Forget It!”
Authors: Hamaguchi Toshiko 
Published: December 2023

Abstract
Using recorded interactions between nursing home residents and care staff, this study demonstrates interactional
strategies of younger recreation workers during a weekly recreational activity named Tea Time Talk that serves to reduce
generational as well as epistemic gaps with the residents. This study focuses on how older residents’ reference to memory loss or
forgetfulness is deindividuated and trivialized by humorously framing it as something the participants can forget together. I will
claim that such intergenerational interactions on a regular basis help create solidarity between the residents and nursing home
staff, as well as maintain dignity of and respect towards the older residents who often experience a sense of exclusion from the
‘here and now’ which affects their life satisfaction at the end-of-life stage.
A novel frog-like meta-structure with linkage mechanism for low-frequency vibration isolation
Authors: Li Xiaoyun , Wang Jixiao , Chai Yijun , Yang Xiongwei , Wang Chunming , Li Yueming 
Published: December 2023

Abstract
Structures with linkage mechanism, which could be widely seen in engineering, usually need to bear a certain load and exhibit ideal vibration isolation performance. One of the key factors affecting the mechanical and vibration properties is the connection behavior of the linkage mechanism. To clarify its influence on the vibration characteristics, a novel frog-like meta-structure by introducing a linkage mechanism into the conventional locally resonant metamaterial with a mass-spring resonator is proposed in the present paper, in which the linkage connection is considered as three types of hinged, fixed and elastic, respectively. The equivalent dynamic model of the meta-structure is established theoretically to calculate the effective material properties, which is then validated numerically through band gap and vibration analysis. The results show that the hinged linkage offers equivalent mass and free vertical displacement, while the fixed linkage provides supporting stiffness, shifting the band gap towards higher frequencies. An appropriate elastic connection can enhance the ‘spring-vibrator’ effect, which in turn can significantly expand the low-frequency vibration suppression range of the structure. Experiments are also conducted corresponding to the different linkage mechanisms, and the dynamic model is verified. This study could provide a new idea for promoting the application of the locally resonant meta-structure with a linkage mechanism in the field of low-frequency vibration isolation.
Optical orbital angular momentum transfer to electronic currents
Authors: Emile Olivier , Emile Janine 
Published: December 2023

Abstract
Light orbital angular momentum (OAM) is transformed into an electronic current loop in a copper coil, by absorption of the optical radiation. The measurement of this current, that is in the 10−17 A range, makes it possible to evaluate and quantify the OAM carried by an electromagnetic wave in the optical domain. In particular, it determines unambiguously the torque generated by the beam and its topological charge. The induced current depends on the optical power and on the wavelength, in good agreement with theoretical predictions. Further possible developments towards an optical torque-meter are then discussed.
Silver-TiO2 coated D-shaped photonic crystal fiber based SPR sensor for ultrasensitive refractive index detection: design and FEM analysis
Authors: Divya J , Selvendran S , Raja A Sivanantha , Chitra K 
Published: December 2023

Abstract
Photonic crystal fiber (PCF) based surface plasmon resonance (SPR) sensors are emerging as a promising technology for ultrasensitive detection of various biological and chemical analytes. This paper presents a novel D-shaped PCF based SPR sensor, which has shown great potential for highly sensitive detection of refractive index (RI) changes. The D-shaped configuration is achieved through the polishing of the upper side of the PCF fiber. To enhance sensitivity, a 0.1 μm silver layer is strategically placed between the fiber and analyte, intensifying light–matter interactions. Additionally, a 0.05 μm titanium dioxide (TiO2) layer is employed not only to further boost sensitivity but also to shield the metal from oxidation, ensuring the longevity and stability of the sensor. The finite element method (FEM) is employed to optimize the structural parameters of the sensor design. The findings demonstrate that the proposed SPR sensor is sensitive to RI changes in the 1.31–1.35 range, achieving a peak wavelength sensitivity of 30000 nm RIU−1 and an amplitude sensitivity of −185.33 RIU−1. The sensor holds promise for diverse applications, including chemical and biological sensing, making it a versatile tool with promising implications for advancing sensing technologies in various domains.
Strong gravitational lensing of blazar gamma-radiation and intergalactic magnetic fields
Authors: Eroshenko Yu. N. 
Published: December 2023

Abstract
The influence of intergalactic magnetic fields on the strong gravitational lensing of blazar secondary gamma radiation is discussed. Currently, two cases of strong gravitational lensing of blazar gamma-radiation are known, where radiation is deflected by galaxies on the line of sight between the blazars and Earth. The magnetic field can affect the movements of electron-positron pairs generated by primary radiation, thereby changing the directions of secondary gamma radiation. It modifies the equation of the gravitational lens and leads to the dependence of the observed signal in the secondary gamma radiation on the energy of photons and magnetic field. Accordingly, it is possible, in principle, to estimate the intergalactic magnetic fields from the time delay of signals, from the angular position of images (for future high-resolution gamma-ray telescopes) or from the shape of the observed energy spectrum. This method is demonstrated by the example of the blazar B0218+357. In this case, however, it is not possible to obtain useful constraints due to the large distances to the blazar and lens galaxy. The result is only a lower limit on the magnetic field

G, which is weaker than other existing constraints. However, future discoveries of lensed blazars may provide more favorable opportunities for measuring the magnetic fields, especially with the help of a new generation of gamma-ray telescopes such as e-ASTROGAM, GECAM, and SVOM as well as future gamma-ray telescopes with a high angular resolution,

.
Fully-light vector tetraquark states with explicit P-wave via QCD sum rules*
Authors: Xin 辛 Qi 琦 , Wang 王 Zhi-Gang 志刚 
Published: December 2023

Abstract
In this study, we apply the QCD sum rules to investigate the vector fully-light tetraquark states with an explicit P-wave between the diquark and antidiquark pairs. We observed that the

(or

) type current with fully-strange quarks couples potentially to a tetraquark state with a mass

, which supports assigning

as the diquark-antidiquark type tetraquark state with

. The

and

vector tetraquark states with the structure

(or

) are consistent with

and

, respectively, which lie in the region from

to

. The central values of the masses of the fully-strange vector tetraquark states with an explicit P-wave are approximately

(or

). Predictions for other fully-light vector tetraquark states with and without hidden-strange are also presented.
The Influence Of Climate And Weather On The Arabica And RobustaCoffee Development And Production In The Ermera District Of Timor-Leste
Authors: Gomes Lucio Marcal , Ali M.Saleh S. , Ala H. Ambo , Salman Darmawan 
Published: December 2023

Abstract
Referring to the research entitled the effect of climate change and weather of the development and production of arabica and robusta coffee in Ermera district, Timor Leste. Arabica coffeeis one of the prima donna commodities that play an important and strategic role in securing the economy for nearly two and seventy thousand farmer houses in Timor-Leste. The potential for Arabica coffee exports in Timor Leste is ranked thirty-ninth with a fairly highexport quality because of the taste that is favored by coffee drinkers in the world around 157 million people, but the trend of increasing national coffee production is only 1-2% per year. On the other hand, the effects of climate change and weather also threaten the achievement of the target of increasing production. This research is a review of the effect of climate change and weather on coffee production and adaptation strategies in Timor Leste. The main coffee producing areas, such as the Regencies of Ainaro, Aileu, Bobonaro, Ermera, Liquisa and Manufahi, are vulnerable to the effects of climate change and weather. Increased extreme climateevents such as drought due to El Nio resulted in a 10-15% decline in coffee production. On the other hand, the long rainy season due to La Nia reduces coffee production by 80-90%. The indirect effect of climate and weather changes is the increase in attacks of fruit borer, coffee powder and leaf rust disease (Hemelia vastatrix) which causes a decrease in production of around 40-50%. As a result of rising temperatures, coffee production centers are projected to move to areas with higher elevations. Various adaptation technologies have been produced, but the level of adaptation of coffee farmers is generally still low. This condition is exacerbated by the limited access of most farmers to climate information, markets, technology, farm credit, and information on climate risk management. To overcome these problems, policy makers, stakeholders, and farmers must accelerate adaptation efforts because climate change has occurred and will continueto take place.
Analysis of Comfort Level in Public Open Space Facilities at Anjungan Sungai Mata Allo Enrekang: Visitors’ Perspective
Authors: haq Izharul , Radja Abdul Mufti , Syam Syahriana 
Published: December 2023

Abstract
This study aims to conduct an in-depth analysis of the level of comfort in public open space facilities at Anjungan Sungai Mata Allo, Enrekang, based on visitors’ perceptions using a mixed-method approach, including the Likert scale method. Additionally, direct observation and structured interviews were employed to collect data on various facility aspects, such as the availability of seating, lighting, greenery, cleanliness, and recreational amenities. The data was analyzed both statistically and qualitatively to gain insights into visitors’ preferences and expectations. The results of the analysis revealed that visitors’ perceptions of the comfort level in public open space facilities at Anjungan Sungai Mata Allo Enrekang varied. Several factors significantly influencing comfort included the availability of adequate seating, sufficient lighting, the presence of refreshing green areas, and the cleanliness and quality of recreational amenities. The mixed-method approach allowed for a comprehensive understanding of visitors’ preferences and expectations regarding these facilities. This research provides valuable insights for local governments and area managers in improving and developing public open space facilities. By understanding visitors’ needs and preferences, local authorities can plan urban development more centered on the community, thereby enhancing the experiences of city residents at Anjungan Sungai Mata Allo. The findings from this study are expected to serve as a strategic foundation for creating a more user-friendly, comfortable, and high-quality public space for the community, ultimately boosting the attractiveness of Anjungan Sungai Mata Allo as an urban tourism destination.
Mangrove Management Model Towards Net Zero Emissions in Sinjai Regency, South Sulawesi Province.
Authors: Indrawati  , Budimawan  , Samsu Arif 
Published: December 2023

Abstract
Mangrove ecosystem plays a very vital role in mitigating climate change, through carbon CO2 absorption. Mangroves have high potential as carbon sequestration. Sinjai Regency is one of the pilot project locations for district/city involvement in the Regional Low Carbon Development Plan in South Sulawesi Province, so that the policy continues to be implemented in various regions. Sinjai Regency has a Mangrove Area which is the result of rehabilitation, but there are indications of changes in land cover that are used conventionally and not integrated, causing a reduction in the area of mangrove land cover. This study aims to analyze the behavior of the model using three policy scenarios with the concept of environmental sustainability in terms of the contribution of mangrove forest utilization to emission absorption. The method used to see changes in land use from year to year is the spatial analysis method, then the data is analyzed using a dynamic system. This research was conducted from January to June 2022 in Sinjai Regency, South Sulawesi Province. The results of the analysis reveal that there are several types of land use that have decreased in area and some have increased in area from year to year. The simulation results show that the proportion of emissions is inversely proportional to changes in mangrove area. The recommended policy is to maintain a minimum land area in the Mangrove Area which is a Protected and Conservation Area and carry out mangrove rehabilitation. The policy structure in the mangrove sector is divided into three parts, scenarios under baseline, fair and ambitious conditions. The mangrove sector in baseline conditions can achieve net zero emissions in 2041, while fair conditions are achieved in 2027 and ambitious conditions are achieved in 2024.
Mangrove Ecosystem Management Strategy In Biringkassi Mangrove Area Pangkep Regency
Authors: Haidir Muh , Ambeng  , Samawi Farid 
Published: December 2023

Abstract
The mangrove ecosystem has an important role in the balance of the coastal area and the living things that surround it. The magnitude of the role of the mangrove ecosystem as a multifunctional resource and its existence which is very vulnerable to pressure requires a mangrove ecosystem management by integrating all aspects so that the existence of the mangrove ecosystem can be managed and its sustainability can be increased. This study aims to assess the condition and potential of mangrove forests in the Biringkassi mangrove area and determine sustainable management strategies for mangrove ecosystems based on influencing factors. This study uses an ecological analysis of mangrove ecosystems and SWOT analysis to determine sustainable management strategies. The results showed that the identification of Biringkassi mangroves in the three sample areas found 3 families of 3 species, Rhizopora mucronata, Sonneratia alba, And Avicennia alba. The type of Rhizopora mucronata had the highest density among all species found at 3 sample locations. The total density is 293 ind./hectare. Management strategies that are a priority in sustainable management of the Biringkassi mangrove area are: Developing a mangrove data bank through cooperation with the government, communities, and NGOs, strengthening institutional coordination that is more measurable and structured in the context of ecological sustainability, through conservation the establishment and arrangement of the Biringkassi mangrove management area, developing community-based management such as nursery and ecotourism management, improving the quality of human resources and maximizing the role of the community local communities in maintaining mangroves. The condition of the density of the Biringkassi mangrove ecosystem is categorized as less dense.
Biostratigraphy of calcareous nannofossils and their distribution in Tonasa Formation, Mallasoro area Jeneponto, South Sulawesi
Authors: Farida M , Jaya A , Ahmad A , Salsabilah N , Sato T 
Published: December 2023

AbstractThe age studies of the Tonasa Formation have been carried out from various relative ages, including using large foraminifera, small foraminifera, and nannofossil. Field and laboratory data were collected to observe the age and distribution of nannofossils in the study area. The results of observations from nannofossils in the Mallasoro section of the Jeneponto area are as many as 20 species were identified and examined in three markers ofSphenolithus pseudoradians(NP.22-NP.24), and the Last Occurrence ofDictyococcites scrippsae(NP.25-NN. 1). The age zonation of Tonasa Formation in this area is determined from the three datums is the Late Oligocene to Early Miocene (NP. 21 – NN.1) or correlated to CP.16c – CP.19a. The nannofossil abundances are distributed from bottom to top of the section is common to a few species, they areCyclicargolithus floridanus, Sphenolithus moriformis, andSphenolithus predistentus, respectively. Then followed byZygrhabilithus bijugatus, Discoaster deflandrei,Dictyococcites scrippsae,and Coccolithus pelagicusin rare to present distributions and the others are present to single.
Coal Quality Effect Analysis on Clinker Deformation in The Binungan Area, Berau Regency, East Kalimantan Province, Indonesia
Authors: Asmoro Yoki Dwi , Ma’waleda Musri , Widodo Sri 
Published: December 2023

Abstract
Unidentified Clinker causes a loss of reserve in mine activity. Clinker is created by in situ coal heating and has certain quality characteristics. This research investigated the effect of coal quality on clinker deformation. This research is located in the Latih Formation, Binungan Area, Berau Regency, East Kalimantan Province, Indonesia. Coal quality samples were derived from 77 drillholes, consisting of 10 seams with a thickness > 2.25 m and distributed laterally and vertically. Coal quality parameters consist of Inherent Moisture (IM), Ash Content (AC), Volatile Matter (VM), and Fixed Carbon (FC). The coal quality sample is classified into the clinker seam group and the non-clinker seam group. Each quality parameter is compared with seam thickness in a scatter graph. The result of this study is that coal that has the potential to deform into clinker has a value of IM < 14.49 %, VM > 39.8%, and FC > 42.08 %, but AC is 3.63% relatively stable, or there is no correlation to clinker deformation. Among these four quality parameters, moisture significantly differs between seam clinker and non-clinker. This study concludes that the lower layer of coal or older seam in the Binungan area has a higher potential to be clinker, which is caused by increased FC and VM values and a decrease in IM value.
Uniaxial Compressive Strength (UCS) Correlation Analysis On Ground Vibration in Blasting Activities
Authors: Apriansyah Rusadi , Purwanto  , Ramli Muhammad 
Published: December 2023

Abstract
Pit C2 is one of the active mining area at Sambarata Mine Operation Site which is included in block B1 whose mining sequence are increasingly leading to community and implementing blasting activities in mining operations, so that the ground vibrations are very important in the pit blasting activities. So far, the scale distance method of the signature hole combination used to analyze ground vibrations from blasting activities is considered to be quite good in some interburdens which is indicated by a deviation value of less than 10%. However, in some sandstone and mudstone rock types with relatively high uniaxial compressive strength values (26.92 – 33.87 MPa) showed abnormalities/deviation between the analysis method and the actual ground vibration (more than 10%) compared to other areas (11.17 to 14.67 MPa). After performing a regression analysis comparing the UCS values and the variance of the predicted results, it was found that there was a positive correlation between the UCS values and the variance of the blasting vibration analysis using the equation y = 27,142 x 19,876 with value of R = 0.725. So that the UCS value in the rock needs to be considered in determining vibration and blasting design.