bluuebunny/crossref_metadata_2025_split huggingface dataset:
Forecasting Next-Time-Step Forex Market Stock Prices Using Neural Networks
Authors: Navaei Mahdi , Pahlevanzadeh Mostafa 
Published: April 2024

Abstract

Purpose:
This study aims to predict the closing price of the EUR/JPY currency pair in the forex market using recurrent neural network (RNN) architectures, namely Long Short-Term Memory (LSTM) and Gated Recurrent Unit (GRU), with the incorporation of Bidirectional layers.
Methods:
The dataset comprises hourly price data obtained from Yahoo Finance and preprocessed accordingly. The data is divided into training and testing sets, and time series sequences are constructed for input into the models. The RNN, LSTM, and GRU models are trained using the Adam optimization algorithm with the mean squared error (MSE) loss metric.
Results:
Results indicate that the LSTM model, particularly when coupled with Bidirectional layers, exhibits superior predictive performance compared to the other models, as evidenced by lower MSE values.
Conclusions:
Therefore, it can be concluded that the LSTM model with Bidirectional layers is the most effective in predicting the EUR/JPY currency pair's closing price in the forex market. These findings offer valuable insights for practitioners and researchers involved in financial market prediction and neural network modeling.
Prahara Digital Labor dalam Bingkai Penafsiran Logika Waktu Pendek dan Kapitalisme Luwes
Authors: Putranto Hendar 
Published: April 2024

<p align="justify"><em>When the COVID-19 pandemic gradually subsided, digital disruption was considered a game changer for today's work, such as work from home (WFH). The prevalence of digital disruption in contemporary work has triggered the birth of a digital labor class, which broadly impacts intra- and inter-organizational communication, especially in dealing with work-related risks in an increasingly insecure labor market. In a macro context like this, digital labor within neoliberal higher education institutions became an interesting phenomenon, especially given the worsening conditions of intellectual workers and changes in academic behavior and practices. A recent study showed many practices violating academic integrity in Indonesian higher education institutions, such as plagiarism, data fabrication, improper claims of authorship, contract-cheating, and other violations of professional codes of ethics. To address these problems, the author employed a critical method of the political economy of communication and the sociology of work to analyze 'short-time logic' as an operational mechanism in flexible capitalism, commoditizing workers' time by blurring the boundaries between productive and leisure time and turning the illusion of worker autonomy into a 'sustained contestation.' The 'short time logic' of flexible capitalism deformed intellectual workers in higher education in Indonesia into digital labor because they were constantly conditioned to produce intellectual products with highly competitive metrics but lacking reflection and meaningfulness, which sharpened the gaps in competency-based inequalities and created a new hierarchy of social classes in higher education. </em><strong></strong></p>
Feasibility and Preliminary Efficacy of α–Calcium Sulfate Hemihydrate in Socket Preservation: Protocol for a Pilot Randomized Controlled Trial
Authors: Ruslin Muhammad , Hamrun Nurlindah , Tajrin Andi , Yusuf Andi Sitti Hajrah , Nurrahma Rifaat , Natsir-Kalla Diandra Sabrina , Ariestiana Yossy Yoanita , Nur Anam Mukhtar , Liu Chung-Ming , Ou Keng-Liang 
Published: April 2024

Background
Tooth extraction procedures often lead to bone resorption, which can have adverse effects on the dimensions of the alveolar ridge. Research has shown that socket preservation techniques using bone graft substitutes can effectively minimize early bone loss in such cases. α–calcium sulfate hemihydrate (α-CSH) has garnered significant attention as a potential bone graft material due to its favorable properties, including osteoconductivity, angiogenic potential, and biocompatibility. Considering these facts, we developed a preliminary protocol for applying α-CSH in addressing alveolar bone loss following tooth extraction.

Objective
This research’s general objective is to evaluate the feasibility and initial effectiveness of α-CSH as bone-inducing graft material for socket preservation after tooth extraction.

Methods
This preliminary clinical trial will involve 30 fresh extraction sockets from individuals aged 18-35 years. The participants will be divided into 2 groups: one group will receive α-CSH graft material after tooth extraction for socket preservation, while the other group will not receive any graft material. Throughout the study, the participants will be closely monitored for safety measures, which will include clinical examinations, radiographic imaging, and blood tests. Radiographic imaging will be used extensively to assist the progress of bone formation.

Results
The study commenced enrollment in August 2022 and is scheduled to conclude post assessments and analyses by the end of 2023. The results of the study are anticipated to be accessible in late 2024.

Conclusions
This clinical study represents the initial investigation in humans to assess the feasibility and efficacy of α-CSH in alveolar bone regeneration. We hypothesize that the inclusion of α-CSH can greatly expedite the process of bone formation within fresh sockets, resulting in a swift restoration of bone height without the disadvantages associated with harvesting autogenous bone graft.

Trial Registration
Indonesia Registry Center INA-D02FAHP; https://tinyurl.com/2jnf6n3s

International Registered Report Identifier (IRRID)
DERR1-10.2196/49922
An assessment of representing land-ocean heterogeneity via convective adjustment timescale in the Community Atmospheric Model 6 (CAM6)
Authors: Goswami Bidyut Bikash , Polesello Andrea , Muller Caroline 
Published: April 2024

The time needed by deep convection to bring the atmosphere back to
equilibrium is called convective adjustment timescale or simply
adjustment timescale, typically denoted by 𝜏. In the Community
Atmospheric Model (CAM), convective adjustment timescale is a tunable
parameter with one value, 1 hour, worldwide. Albeit, there is no
justified reason why one adjustment timescale value should work over
land and ocean both. Continental and oceanic convection are different in
terms of the vigor of updrafts and hence can have different longevities.
So it is logical to investigate the prescription of two different
convective adjustment timescales for land (𝜏𝐿) and ocean (𝜏𝑂) . To
understand the impact of representing land-ocean heterogeneity via 𝜏, we
investigate CAM climate simulations for two different convective
adjustment timescales for land and ocean in contrast to having one value
globally.
Following a comparative analysis of 5-year-long climate simulations, we
find 𝜏𝑂 = 4 hrs and 𝜏𝐿 = 1 hr to yield the best results. Particularly,
we find better MJO simulations. Although these 𝜏 values were chosen
empirically and require further tunning, the conclusion of our finding
remains the same, which is the recommendation to use two different 𝜏
values for land and ocean.
A synoptic view of mantle plume shapes enabled by virtual reality
Authors: Lu Qianyi , Rudolph Maxwell L 
Published: April 2024

The shapes of mantle plumes are sensitive to mantle viscosity, density
structure, and flow patterns. Increasingly, global tomographic models
reveal broad plume conduits in the lower mantle and highly-tilting
conduits in the mid and upper mantle. Previous studies mostly relied on
2D slices to analyze plume shapes, but fully investigating the
complexity of 3D plume structures requires more effective visualization
methods. Here, we use immersive virtual reality (VR) headsets to
visualize the full-waveform global tomographic models SEMUCB-WM1 and
GLAD-M25 (V). We develop criteria for the
identification of plume conduits based on the relationship between the
plume excess temperature and the V anomaly
(∂V). We are able to trace 20 major plume conduits,
measure the offsets of the conduits in azimuth and distance with respect
to the hotspots, calculate the tilt angle, and evaluate the
∂V along all traced conduits. We compare our traced
conduits with the conduits predicted by global mantle convection models
and vertical conduits. The wavespeed variations along conduits traced
from each tomographic model are slower than modeled or vertical
conduits, regardless of which tomographic model they are evaluated in.
The shapes of traced conduits tend to differ greatly from modeled
conduits. Plume ponding and the emergence of secondary plumes, which
could result from a combination of different plume compositions, phase
transitions, small-scale convection, and variations in viscosity and
density of the ambient mantle, can contribute to the complex observed
plume shapes.
THE EFFECT OF LAMTORO LEAF FLOUR (Leucaena leucocephala) IN FEED ON THE GROWTH OF TILAPIA (Oreochromis niloticus)
Authors: Mukaromah Fadilatul , Haetami Kiki , Andhikawati Aulia , Grandiosa Roffi 
Published: April 2024

Tilapia is favored for its rapid growth and adaptability to diverse aquatic environments, making it a widely cultivated fish. In fish farming activities, feed provides the largest contribution to the total production cost. So that farmers must use alternative feed to reduce feed costs. One alternative feed for tilapia that is easy to obtain, affordable and sustainably available is lamtoro leaves. The aim of this research was to determine the effect of adding lamtoro leaf flour to feed at different concentrations on the growth of tilapia (O. niloticus). The average weight of tilapia at the beginning of the study was 5,7 grams. This research was conducted for 40 days starting in May until June 2023, taking place in Kertayasa Village, Cijulang District, Pangandaran Regency. The method used in this research was an experimental method using a completely randomized design (CRD) with 4 treatments and 3 replications, namely treatment A: 100% commercial feed (control), treatment B: commercial feed + 5% lamtoro leaf flour, treatment C: commercial feed + 10% lamtoro leaf meal, and treatment D: commercial feed + 15% lamtoro leaf meal. Parameters observed included daily growth rate (SGR), absolute length growth, and water quality. The results indicated a significant effect (P<0.05) on the daily growth rate (SGR) by incorporating lamtoro leaf flour into the feed. The highest treatment, observed in treatment C at 50%/day, resulted in the maximum absolute length growth of 4.63 cm. The water quality parameters during the study were in the proper range for the life of tilapia (O. niloticus). Providing lamtoro leaf flour in feed does not have a negative effect on growth and water quality. Keywords: Tilapia fish, lamtoro leaf meal, growth.
Estrategias de calefacción pasiva y su impacto en el confort térmico en viviendas altoandinas en Apurímac-Perú
Authors: Cerron contreras Amanda 
Published: April 2024

La presente investigación tiene como objetivo determinar el impacto que tendrían las estrategias de calefacción pasiva en el confort térmico de los pobladores en viviendas alto andinas en Sabaino Apurímac, que se caracterizan por tener un clima frio y además estar expuestos al problema de las heladas propias de dichos lugares. Esta investigación es de diseño no experimental, de tipo descriptivo correlacional y muestreo no probabilístico. Se realizó mediciones de las variables térmicas en el lugar de estudio para analizar la situación actual que enfrentan en dichas zonas y una encuesta realizada a 34 especialistas del área para establecer cuáles son las estrategias pasivas de calentamiento más óptimos que se adecuarían para zonas altoandinas para lograr una mejora en el confort térmico en las viviendas. Los resultados muestran que la estrategias de calefacción pasiva influirían significativamente en el confort térmico de los pobladores en viviendas altoandinas, asimismo se concluye que las estrategias más idóneas que pueden ser implementadas en viviendas ya construidas son los tragaluces cenitales, invernaderos adosados, la captación directa a través de las ventanas orientadas al N, E y O son más eficientes; en conjunto con la incorporación de material aislante en la envolvente para lograr incrementos de temperatura de hasta 10°C aproximadamente.
Accumulation of Mn, Cu, and Zn in Flowers and Leaves of Catalpa bignonioides in an Urban Area Under Climate Change Conditions
Authors: Parzych Agnieszka , Yurchak Aliaksandra 
Published: April 2024

Abstract
Green areas are an important part of the urban landscape. Trees produce oxygen, provide shade, maintain soil moisture, and reduce the amounts of toxic gases and dust in the air. Due to the changing climate, species characteristic of other climatic zones, e.g. Catalpa bignonioides, are planted in urban parks in Poland, mainly due to the attractive appearance of the leaves and flowers. The aim of the study was to assess the content of Mn, Cu, and Zn in flowers and leaves of C. bignonioides in the urban park and to determine the value of bioconcentration coefficients (BCF) of these metals. The obtained results indicate that the flowers and leaves of C. bignonioides accumulate lesser amounts of manganese, copper, and zinc. It is a consequence of the limited bioavailability of these components in soils, due to too high pH values resulting from alkalinization of urban soils. The values of bioconcentration coefficients (BCF <1) confirm the low accumulation of Mn, Cu, and Zn in both leaves and flowers of C. bignonioides, due to the limited mobility of manganese, copper, and zinc compounds in the soils of the urban park and the low impact of falling dusts, which are the carriers of the analyzed components.
Digenea community structure of the Salema, Sarpa salpa (Linnaeus, 1758) (Teleostei, Sparidae), from the Central coast of Algeria
Authors: Boukadoum A. , Tazerouti F. 
Published: April 2024

Summary
The main goal of the current work was to describe and analyse the Digenean community structure in Sarpa salpa. A total of 114 specimens of S. salpa were collected from the Central Coast of Algeria at six localities. The fish were immediately transported to the laboratory to be examined for digeneans. From 107 of the 114 S. salpa examined, a total of 8,722 specimens of seven species belonging to three families were recovered. Among them, Robphildollfusium fractum and Mesometra orbicularis were the most prevalent and abundant species. Moreover, Lepocreadium album was found for the first time in S. salpa from the coast of Algeria, and Centroderma spinosissima and Wardula capitellata represent new parasites to the Algerian digenean fauna that infect teleost fish. The component community of these Digeneans is characterised by R. fractum as its dominant species representing 62% of the total number of collected Digeneans, as well by a Shannon diversity index (H′) and Dominance Simpson index (D) of 1.03 and 2.23, respectively. According to Spearman's correlation test, Mesometra brachycoelia and W. capitellata were negatively correlated to the host biological factors. On the other hand, R. fractum showed a positive correlation between its mean abundance and the total length of the fish. With these findings, we provided the component structure of the Digenean fauna of S. salpa and highlighted their diversity, contributing to the biodiversity of the parasitic Platyhelminthes in Algeria.
Methodology for Selecting Optimal Routes for the Transportation of Dangerous Goods in Conditions of Risk Uncertainty
Authors: Pustiulha Serhii , Samchuk Volodymyr , Holovachuk Ihor , Prydiuk Valentyn , Klak Yuriy 
Published: April 2024

Abstract
* A risk situation is a type of uncertainty situation where events are likely to occur. In other words, risk is an estimated probability, and uncertainty is something that cannot be quantified. The greater the uncertainty when making a decision, the greater the degree of risk.
The investigation is devoted to the development of a unified methodology for selecting optimal (from the proposed alternatives) routes for transporting dangerous goods (any of the 9 standard classes) by road.
A model for determining two groups of risk components for transporting dangerous goods on separate routes is proposed, namely: parameters of risks of probability of occurrence of emergency situations and parameters that affect the risks of complexity of eliminating their possible consequences. This opened up opportunities for correct selection of criteria when forming a multi-criteria optimization problem of transportation.
Mathematical algorithms for a comprehensive solution of the multi-criteria optimization problem of routing dangerous goods transportation are developed using the classical criteria of Laplace, Wald, Savage, and Hurwitz.
To confirm the legal capacity of the proposed approach and mathematical apparatus, the optimal route for transportation of cylinders with technical gases through the transport network of Lutsk was calculated. Possible alternative transportation routes have been identified and safety criteria have been formalized for two groups of risk components
Lorawan-Based RSSI-Trilateration Model for Node Location: A Simulation Integrating Flora and Omnet++
Authors: Yi Loor Jiawey D. , Espinal Albert , Sanchez Padilla V. 
Published: April 2024

Abstract
This work presents the employing of LoRaWAN (Long Range Wide Area Network) for location applications through a network simulation to determine a mobile node position. We rely on FLoRa (Framework for LoRa) and OMNeT++ (Objective Modular Network Testbed in C++) simulator, which uses Python feature tools, following the calculation of node placement using the trilateration technique. Our method differs from others in that we calculate the FLoRa power loss and determine different simulation settings using the shadowing feature of the log-distance path loss model. We approached RSSI (Received Signal Strength Indicator) to measure the distance between the LoRa gateways and the nodes, establishing a link between these parameters. Our work aims to promote the integration of open-source tools for verifying signal intensity values based on node distance from gateways. We consider it useful for engineers in predicting signal behaviors according to topology and settings variations. During the experimentation, the network underwent different performances according to the transmission parameters considered during the simulation. This was critical when increasing the number of mobile nodes, leading to consuming computer capacity and resources. Through repetition of tests, we confirmed the lower intensity of the received signal as the node moves to farther positions, reaching consistent power indicators and positioning accuracy. Overall, the results show that LoRaWAN integrated with trilateration techniques can be practical in providing adequate performance for node positioning accuracy and long-distance communication with low power consumption.
Derajat Q Angle Memengaruhi Kecepatan Lari Remaja Pemain Sepak Bola: Studi Observasional Analitik
Authors: Rahma Sari Dini , Nugraha Made Hendra Satria , Indrayani Agung Wiwiek , Wiryanthini Ida Ayu Dewi 
Published: April 2024

Pendahuluan: Genu valgum merupakan kondisi di mana kaki terpisah saat lutut disatukan atau disebut sebagai kaki X. Q angle adalah sudut patella yang terbentuk antara ligamentum patella dan garis lurus dari resultan gaya tarik quadriceps. Pemain sepak bola dengan bentuk lutut genu valgum dapat mengalami pergeseran pada tulang patella dan gangguan fungsional lainnya yang berpotensi mempengaruhi kecepatan lari. Tujuan penelitian ini adalah untuk mengetahui hubungan antara derajat Q angle dengan kecepatan lari pemain sepak bola remaja di Kecamatan Narmada Kabupaten Lombok Barat.
Metode: Penelitian ini menggunakan metode observasi analitik dengan pendekatan cross-sectional. Sebanyak 53 pemain sepak bola menjadi subjek penelitian. Variabel independen adalah derajat Q angle, sedangkan variabel dependen adalah kecepatan lari sejauh 60 meter yang diukur menggunakan stopwatch.
Hasil: Hasil penelitian menunjukkan bahwa dari 53 pemain sepak bola, 34 orang (64,15%) memiliki derajat Q angle yang dikategorikan sebagai normal, sementara 19 orang (35,85%) dikategorikan sebagai abnormal dengan kecepatan rata-rata 9,8. Hasil analisis spearman rho menunjukkan nilai p=0,001, mengindikasikan adanya hubungan signifikan antara derajat Q angle dengan kecepatan lari. Selain itu, nilai r=0,442 menunjukkan kekuatan hubungan antara derajat Q angle dengan kecepatan lari berada pada tingkat sedang.
Simpulan: Temuan penelitian ini menyimpulkan bahwa terdapat hubungan yang signifikan dan sedang antara derajat Q angle dengan kecepatan lari pemain sepak bola remaja di Kecamatan Narmada Kabupaten Lombok Barat. Pemain sepak bola yang memiliki derajat Q angle abnormal (35,85%) berisiko tinggi mengalami penurunan kecepatan lari dan dapat menyebabkan cedera yang lebih serius.

Kata Kunci: genu valgum, q-angle, kecepatan lari, cross-sectional, sepak bola
Analisa Fleksibilitas Hamstring dan Faktor Resiko terhadap Pemendekan Otot Hamstring pada Remaja Dewasa di Wilayah Ambokembang
Authors: DT Siti Sardianti , Paramitha Intan Azkia , Sabrina Maeyana Eka 
Published: April 2024

Latar Belakang: Fleksibilitas adalah kemampuan jaringan atau otot untuk mencapai gerakan maksimal pada sendi tanpa adanya rasa sakit atau nyeri dari berbagai posisi. Otot hamstring, yang berperan sebagai penggerak fleksi lutut, dapat mengalami kerusakan jika tidak cukup fleksibel saat terjadi gerakan ekstensi lutut. Prestasi atlet dalam olahraga memerlukan persiapan matang dalam aspek fisik, teknik, emosional, dan spiritual, termasuk kesehatan fisik, dengan fokus pada kelenturan otot hamstring.
Metode: Penelitian ini merupakan penelitian kuantitatif non-eksperimental. Tujuan penelitian ini adalah menganalisis hubungan antara fleksibilitas hamstring dan faktor risiko pemendekan hamstring pada remaja dewasa di wilayah Ambokembang. Penelitian ini termasuk jenis cross-sectional, dengan variabel bebas meliputi umur dan jenis kelamin, dan variabel terikat adalah kejadian gangguan muskuloskeletal pada remaja. Indeks massa tubuh (IMT) dijadikan variabel kontrol.
Hasil: Berdasarkan analisis data dari 32 partisipan (22 laki-laki dan 10 perempuan), nilai IMT berkisar antara 19,0 hingga 23,3 dengan rata-rata IMT sebesar 21,47. Hasil pengukuran fleksibilitas otot hamstring menunjukkan nilai rata-rata sebesar 5,81, dengan nilai tertinggi mencapai 8 dan nilai terendah di angka 4. Kategori fleksibilitas otot hamstring terbagi menjadi baik (31,25%) dan cukup (68,75%).
Simpulan: Terdapat dominasi remaja dengan fleksibilitas hamstring rendah dibandingkan dengan yang memiliki fleksibilitas baik.

Kata Kunci: fleksibilitas, hamstring, sit and reach