bluuebunny/crossref_metadata_2025_split huggingface dataset:
Penerapan Algoritma C4.5 Untuk Prediksi Penyakit Jantung Menggunakan Rapidminer
Authors: Muzakki Farhan , Ubaydillah Iqbal , Assyiami Nur Rahma , Soleha Sugiyarti 
Published: August 2024

Jantung merupakan organ yang sangat penting untuk dijaga kesehatannya, karena begitu pentingnya fungsi jantung bagi tubuh manusia. Penyakit jantung sangat sulit untuk dideteksi, sehingga menyebabkan banyak orang yang meninggal secara tiba-tiba tanpa menyadari jika seseorang terkena penyakit jantung atau serangan jantung. Penyakit jantung merupakan penyebab kematian nomor satu di dunia. Data ini kami olah untuk mengetahui faktor apa saja yang paling berpotensi pada penyakit jantung, dengan hasil pengolahan data ini kami harapkan dapat menjadi pengingat bagi siapa saja untuk menjaga pola hidup sehat dan mengantisipasi potensi penyakit jantung sejak dini. Teknik data mining yang digunakan dalam penelitian ini menggunakan metode Decision Tree melalui algoritma C4.5 hasil yang diperoleh mulai dari nilai accuracy, precision, dan recall dengan membandingkan split data pada data training dan data testing yang terbesar adalah split data 90 – 10 yaitu accuracy = 65.25%, recall = 70.87% , dan precision = 62.46%. Dengan menggunakan algoritma C4.5 ini diharapkan dapat menghasilkan akurasi yang tepat untuk memprediksi penyakit jantung.

The heart is an organ that is very important to maintain its health, because it is so important the function of the heart for the human body. Heart disease is very difficult to detect, causing many people to die suddenly without realizing if someone has heart disease or a heart attack. Heart disease is the number one cause of death in the world. We process this data to find out what factors have the most potential in heart disease, with the results of this data processing we hope to be a reminder for anyone to maintain a healthy lifestyle and anticipate the potential for heart disease early on. The data mining technique used in this study uses the Decision Tree method through the C4.5 algorithm. The results obtained start from the accuracy, precision, and recall values ​​by comparing the split data on training data and testing data. The largest is a data split of 90 – 10, namely accuracy = 65.25%, recall = 70.87%, and precision = 62.46%. By using this C4.5 algorithm, it is expected to produce the right accuracy to predict heart disease.
Analisis Kepuasan Pengguna Terhadap Penerapan Aplikasi My Xl Dengan Metode Techhnology Acceptance Model
Authors: Ashari Yayan , Supendar Hendra , Fahlapi Riza 
Published: August 2024

Perkembangan pesat teknologi informasi telah membawa dunia masuk ke dalam era baru yang lebih dinamis daripada yang pernah dibayangkan sebelumnya. Penelitian ini bertujuan untuk Menganalisa tingkat kepuasan pengguna terhadap aplikasi My Xl dan sejauh mana aplikasi ini memenuhi kebutuhan pengguna. Model yang digunakan untuk menjelaskan kepuasan pengguna terhadap penerapan aplikasi My Xl adalah Technology Acceptance Model (TAM) dengan 3 konstruk yaitu, Perceived Ease of use, Perceived Usefulnes, Behavioral Intention to Use. Data penelitian telah dikumpulkan melalui kuesioner dan dibagi ke 100 responden. Kemudian data diolah dengan analisis regresi linier. Hasil penelitian ini menunjukkan bahwa variabel X1 dan X2 berpengaruh positif dan signifikan terhadap variabel Y. Berdasarkan hasil Uji F pengujian terhadap Variabel Persepsi Kemudahan Pengguna dan Persepsi Kebermanfaatan menunjukkan nilai Sig sebesar 0.000, yang lebih kecil dari tingkat signifikansi 0.05. Oleh karena itu, dapat disimpulkan bahwa kedua variabel tersebut secara bersama-sama memiliki pengaruh positif dan signifikan terhadap Variabel Penerimaan TI.

The rapid development of information technology has brought the world into a new era that is more dynamic than ever imagined before. This study aims to analyze the level of user satisfaction with the MyXl application and the extent to which this application meets user needs. The model used to explain user satisfaction with the application of MyXl is the Technology Acceptance Model (TAM) with 3 constructs namely, Perceived Ease of use, Perceived Usefulness, Behavioral Intention to Use. Research data has been collected through a questionnaire and divided into 100 respondents. Then the data is processed by linear regression analysis. The results of this study indicate that the variables X1 and X2 have a positive and significant effect on the variable Y. Based on the results of the F Test, testing the variables Perception of User Ease and Perception of Usefulness shows a Sig value of 0.000, which is smaller than the significance level of 0.05. Therefore, it can be concluded that these two variables together have a positive and significant influence on the IT Acceptance Variable.
Circuits courts de proximité
Authors: Corade Nathalie , Lemarié-Boutry Marie , Pérès Stéphanie , Smith Andy 
Published: August 2024

Dans un contexte de développement des circuits courts de proximité (CCP), nous nous interrogeons ici sur la capacité des filières agroalimentaires à relocaliser leur activité par l’intégration de CCP dans leur fonctionnement. L’analyse économique et politique de cinquante-huit entretiens avec des acteurs locaux participant à la régulation de quatre filières en Nouvelle-Aquitaine nous permet de déterminer si (et si oui, comment) les acteurs de filière se saisissent de la logique des CCP pour faire évoluer les pratiques et règles existantes de circuits de distribution. Le résultat est double : (1) Les transformations induites par les CCP se traduisent peu par une redéfinition institutionnalisée des règles et normes des filières, qui restent dominées par une logique de circuit long. (2) À défaut de restructurer ces filières, les CCP proposent plutôt de nouvelles formes organisationnelles au sein des territoires qu’on ne peut qualifier de « filières » puisque ne s’appuyant pas sur des institutions suffisamment fortes pour porter de nouvelles normes et de nouvelles règles. En cela, les CCP sont une proposition de pluralisme économique et politique au sein des sphères agricoles et alimentaires locales.
Achilles tendon thickness and serum asprosin level significantly increases in patients with polycystic ovary syndrome
Authors: Ozturk Huseyin Ali , Arici Fatih Necip 
Published: August 2024

Aim
In our study, we aimed to investigate the Achilles tendon thickness (ATT) and asprosin levels in patients with polycystic ovary syndrome (PCOS) and to evaluate the relationship of these parameters, which may be related to cardio-metabolic diseases.

Methods
In our prospective cross-sectional study, 45 female patients with PCOS and 30 female healthy individuals similar in age were included. Serum dehydroepiandrosterone sulfate (DHEAS), total testosterone, anti-Müllerian hormone (AMH) and asprosin levels were measured using appropriate kits and homeostatic model assessment of insulin resistance (HOMA-IR), luteinizing hormone (LH) to follicle-stimulating hormone (FSH) ratio was calculated. ATT measurements were performed by two radiologists using a high-resolution ultrasound doppler system.

Results
Serum DHEAS, total testosterone, AMH and asprosin levels, HOMA-IR value, LF/FSH ratio, and ATT values were higher in patients with PCOS compared to healthy controls. Correlation analysis was performed between ATT and other parameters in patients with PCOS. In univariate analysis, parameters associated with ATT were detected as asprosin, DHEAS and AMH. In the linear regression analysis performed with significant parameters, asprosin and DHEAS levels were found to be associated with ATT.

Conclusion
ATT values and serum asprosin levels were found to be significantly increased in patients with PCOS, and there is a very close positive relationship between ATT and serum asprosin levels. For this reason, it was thought that ATT measurement could be a cheap, simple and non-invasive monitoring parameter that can be used in the routine cardiometabolic follow-up of patients with PCOS.
A Case Report on Cerebral Gliomatosis: Challenges in Delayed Diagnosis and Management
Authors: Arsalane Ghizlane , Ourrai A. , Abilkassem R. , Agdar O. 
Published: August 2024

Aim: The aim of this study is to reveal the difficulties in delayed diagnosis and management of the Cerebral Gliomatosis : A rare primary infiltrative neoplasia of the brain.
Presentation of the Case: It’s about 9 years old girl with no specific symptoms like headaches with balance disorder and speech disorder that last for more than 2 months.
The paraclinical exams of the brain (MRI,spectrometry and stereotactic biopsy) can put the diagnosis.
Discussion: Cerebral Gliomatosis (CG) is a rare primary infiltrative neoplasia of the brain characterized by diffuse glial proliferation affecting at least both cerebral lobes. The difficulties to diagnosis this pathology and to manage it like in the case of that young girl is because there’s no specific symptoms and to the delayed diagnosis to . In fact the clinical signs are unspecific and highly variable and depending on the areas of the brain affected, the patient's age and the rate of tumor growth.
Conclusion : The difficult diagnosis of the Cerebral Gliomatosis is based on a combination of morphological and histological criteria.
Spectroscopic imaging is of diagnostic and prognostic interest.
Solvent Extraction of Zinc from Burnt Tyre Ash using Tri Butyl Phosphate
Authors: Joseph Oke Temidayo , Awwal Ayowole , Omoniyi Kehinde Israel , Tochi Nkwocha Stephen , Medubi Kayode , Alice Adebayo Abisola 
Published: August 2024

The article reports the solvent extraction of zinc (Zn) from burnt tyre ash using tributylphosphate (TBP) as an extractant. The increasing interest in environmental protection and resource recovery has prompted research into extracting valuable metals from waste materials, such as Zn from tyre ash, a significant secondary source. The optimal conditions for Zn leaching and extraction were determined through a series of hydrometallurgical processes. Zn was successfully extracted under specific HCl concentration, temperature, and pH conditions, with TBP showing effective performance as an extractant. We found that increasing the initial concentration of TBP in kerosene improves the extraction efficiency of Zn from burnt tyre ash. The highest extraction rate achieved was 48.68% using 0.30 mol/L TBP at pH 4.5. The relationship between log D and log [TBP] was done to determine how many moles of TBP were involved in the extraction system. A linear plot with a slope of ~ 1.00 was obtained and indicated the liberation of one mole of [H+] while extracting one mole of Zn2+ from the burnt tyre ash. The study highlights the potential for resource recovery from waste materials, contributing to both environmental sustainability and the supply of industrial metals.
A prototype precipitation retrieval algorithm over land using passive microwave observations stratified by surface condition and precipitation vertical structure
Authors: You Yalei , Wang Nai‐Yu , Ferraro Ralph 
Published: April 2015

AbstractA prototype precipitation retrieval algorithm over land has been developed by utilizing 4 year National Mosaic and Multi‐Sensor Quantitative Precipitation Estimation and Special Sensor Microwave Imager/Sounder coincident data sets. One of the unique features of this algorithm is using the ancillary parameters (i.e., surface type, surface temperature, land elevation, and ice layer thickness) to stratify the single database into many smaller but more homogeneous databases, in which both the surface condition and precipitation vertical structure are similar. It is found that the probability of detection (POD) increases about 8% and 12% by using stratified databases for rainfall and snowfall detection, respectively. In addition, by considering the relative humidity at lower troposphere and the vertical velocity at 700 hPa in the precipitation detection process, the POD for snowfall detection is further increased by 20.4% from 56.0% to 76.4%. The better result is evident in both ends of the retrieved rain rate when the stratified databases are used, especially when the rain rate is greater than 30 mm/h. Similarly, the retrieved snowfall rate using stratified databases also outperforms that using single database. The correlation between retrieved and observed rain rates from stratified databases is 0.63, while it is 0.42 using the single database. The root‐mean‐square error is reduced by 50.3% from 2.07 to 0.98 by using stratified databases. The retrieved snow rates from stratified database are also better correlated with observations and possess smaller root‐mean‐square error. Additionally, the precipitation overestimation from the single database over the western United States is largely mitigated when the stratified databases are utilized. It is further demonstrated that over the majority of the stratified databases, the relationship between precipitation rate and brightness temperature is much closer to that from the corresponding category in the validation databases, rather than that from the single database. Therefore, overall superior performance using the stratified databases for both the precipitation detection and retrieval is achieved.
Experimental study on isotope fractionation effects in visible photolysis of O3 and in the O + O3 odd oxygen sink reaction
Authors: Früchtl Marion , Janssen Christof , Röckmann Thomas 
Published: April 2015

AbstractInvestigation of isotope effects in ozone (O3) photolysis and its contribution to the overall ozone isotope composition is difficult since photolysis always leads to secondary O3 formation and O3 decomposition by reactions with O(3P). Here we use a large excess of carbon monoxide (CO) as O(3P) quencher to suppress O(3P) + O3. This allows disentangling the isotope effects in photolysis and chemical removal when the data are evaluated with a kinetic model. The largest systematic uncertainty arises from an unidentified O3 removal reaction, which is responsible for an unaccounted 20% of the total removal rate. Assuming no isotope fractionation in this reaction, we find  = (16J/18J − 1) = −16.1 (±1.4)‰ and  = −8.05 (±0.7)‰ for O3 photolysis and  = (16k/18k − 1) = −11.9 (±1.4)‰ and  = −5.95 (±0.7)‰ for chemical removal via O(3P) + O3. Allowing for isotope fractionation in the unidentified reaction results in lower fractionation values for photolysis and higher fractionations for chemical removal. Several fractionation scenarios are examined, which constrain the fractionation in photolysis to  > −9.4‰ and  > −4.7‰ and in the chemical removal to  < −18.6‰ and  < −9.3‰. Both fractionations are thus significant and of similar magnitude. Because our measurements are dominated by photolysis in the peak region of the Chappuis band, isotope fractionation of atmospheric O3 by visible photons should also be in the same range. The isotope fractionation factor for O + O3 directly bears on ozone chemistry in the lower thermosphere.
Stepwise sensitivity analysis from qualitative to quantitative: Application to the terrestrial hydrological modeling of a Conjunctive Surface‐Subsurface Process (CSSP) land surface model
Authors: Gan Yanjun , Liang Xin‐Zhong , Duan Qingyun , Choi Hyun Il , Dai Yongjiu , Wu Huan 
Published: April 2015

AbstractAn uncertainty quantification framework was employed to examine the sensitivities of 24 model parameters from a newly developed Conjunctive Surface‐Subsurface Process (CSSP) land surface model (LSM). The sensitivity analysis (SA) was performed over 18 representative watersheds in the contiguous United States to examine the influence of model parameters in the simulation of terrestrial hydrological processes. Two normalized metrics, relative bias (RB) and Nash‐Sutcliffe efficiency (NSE), were adopted to assess the fit between simulated and observed streamflow discharge (SD) and evapotranspiration (ET) for a 14 year period. SA was conducted using a multiobjective two‐stage approach, in which the first stage was a qualitative SA using the Latin Hypercube‐based One‐At‐a‐Time (LH‐OAT) screening, and the second stage was a quantitative SA using the Multivariate Adaptive Regression Splines (MARS)‐based Sobol’ sensitivity indices. This approach combines the merits of qualitative and quantitative global SA methods, and is effective and efficient for understanding and simplifying large, complex system models. Ten of the 24 parameters were identified as important across different watersheds. The contribution of each parameter to the total response variance was then quantified by Sobol’ sensitivity indices. Generally, parameter interactions contribute the most to the response variance of the CSSP, and only 5 out of 24 parameters dominate model behavior. Four photosynthetic and respiratory parameters are shown to be influential to ET, whereas reference depth for saturated hydraulic conductivity is the most influential parameter for SD in most watersheds. Parameter sensitivity patterns mainly depend on hydroclimatic regime, as well as vegetation type and soil texture.
Water exchange through the Betic and Rifian corridors prior to the Messinian Salinity Crisis: A model study
Authors: de la Vara Alba , Topper Robin P. M. , Meijer Paul Th. , Kouwenhoven Tanja J. 
Published: April 2015

AbstractAlthough the present‐day Mediterranean‐Atlantic water exchange has been extensively studied, little is known about the dynamics of the Betic and Rifian corridors that existed before the Messinian Salinity Crisis. Due to the difficulties in studying the paleogeographic evolution of these corridors, physics‐based knowledge of their behavior is essential to interpret observational evidence and to relate flow structures to gateway geometries. Here we present the first systematic model study of the water exchange through these gateways. We use the parallel version of the Princeton Ocean Model (sbPOM) and a set of idealized bathymetries based on a late Tortonian paleogeography. This analysis represents a major step forward in the understanding of the behavior of the double‐gateway system constituted by the Late Miocene Betic and Rifian corridors. We demonstrate that the “siphon” scenario, involving inflow of cold upwelled Atlantic water through the Rifian corridor and outflow of Mediterranean water only via the Betic corridor, is unlikely from a physics perspective. It is shown that two exchange patterns are possible depending solely on the relative depth of the corridors. The implication of this is that geological evidence for the behavior of one corridor provides information about the dimensions of the other. We show that disappearance of outflow in one corridor does not necessarily imply its closure and we establish a guideline to determine how geological evidence can be interpreted as indicating one‐ or two‐layer flow. Based on the model results, we propose new physics‐based scenarios for the time interval defined for the siphon.
An efficient synthesis approach for electromagnetic near‐ and far‐field contoured patterns using alternative narrow‐beam field functions transformed from the radiations of linearly excited array antennas with least computational complexity
Authors: Chou Hsi‐Tseng 
Published: April 2015

AbstractThis paper presents an effective scheme to accelerate the computational efficiency in synthesizing the electromagnetic contoured patterns spanned by the radiations of phased array antennas, which is applicable to synthesize both the near‐ and far‐field patterns. The core concept is to adapt/create closed‐form and simple formulations with least computational unknowns to be used in the iterative synthesis procedure. The efficiency is assured by avoiding the cumbersome numerical integration/summation for the radiation fields in the synthesis procedure. Thus, the scheme first transforms the conventional field basis functions (FBFs) defined by the radiations of every array elements into a set of global FBFs arising from the radiations of a set of overlapped virtual arrays, where each of the virtual arrays is properly excited by a Gaussian taper to avoid the ray caustic problems encountered in the asymptotic evaluations. The new FBFs (NFBFs) created by this transformation have radiation fields focused in narrow spans in contrast to the wide patterns of conventional FBFs and may reduce the number of FBFs in the computation if a small coverage area is considered. Furthermore, the closed‐form formulations of global NFBFs are obtained by asymptotic evaluation and may dramatically reduce the computational time. This approach is implemented with the use of successive projection method, which also provides closed‐form formulations to update the excitations in each iterative step, to synthesize the near‐ and far‐field contoured patterns to demonstrate the feasibility and efficiency.
Ebullition of methane from peatlands: Does peat act as a signal shredder?
Authors: Ramirez Jorge A. , Baird Andy J. , Coulthard Tom J. , Waddington J. Michael 
Published: April 2015

AbstractBubbling (ebullition) of greenhouse gases, particularly methane, from peatlands has been attributed to environmental forcings, such as changes in atmospheric pressure. However, observations from peat soils suggest that ebullition and environmental forcing may not always be correlated and that interactions between bubbles and the peat structure may be the cause of such decoupling. To investigate this possibility, we used a simple computer model (Model of Ebullition and Gas storAge) to simulate methane ebullition from a model peat. We found that lower porosity peat can store methane bubbles for lengthy periods of time, effectively buffering or moderating ebullition so that it no longer reflects bubble production signals. Our results suggest that peat structure may act as a “signal shredder” and needs to be taken into account when measuring and modeling ebullition.
Joint analysis of the 2014 Kangding, southwest China, earthquake sequence with seismicity relocation and InSAR inversion
Authors: Jiang Guoyan , Wen Yangmao , Liu Yajing , Xu Xiwei , Fang Lihua , Chen Guihua , Gong Meng , Xu Caijun 
Published: April 2015

AbstractOver 1000 earthquakes struck the northwest of Kangding on the Xianshuihe fault in southwest China between 22 and 29 November 2014, including two largest events of Mw 5.9 and Mw 5.6. The hypocenters of 799 relocated earthquakes suggest that two independent main shock‐aftershock subsequences occurred on the Selaha and Zheduotang branches of the Xianshuihe fault, respectively. Fault slip inversion results from one interferometric synthetic aperture radar (InSAR) interferogram (26 September 2014 to 5 December 2014) show that the Mw 5.9 main shock produced a maximum slip of ~0.47 m at the depth of ~9 km. However, there is no distinct slip associated with the Mw 5.6 main shock. The InSAR determined moment is 2.36 × 1018 Nm with a rigidity of 30 GPa, equivalent to Mw 6.2, which is about twofold the total seismic moment of all the recorded earthquakes during the InSAR time span. This large discrepancy between geodetic and seismic moment estimates indicates that there was probably rapid aseismic afterslip in the 2 weeks following the Mw 5.9 main shock. The released seismic energy of this earthquake sequence is far less than the accumulated strain energy since the 1955 M earthquake on the same fault branch, which implies that the seismic risk on the Selaha‐Kangding segment of the Xianshuihe fault remains high.