bluuebunny/crossref_metadata_2025_split huggingface dataset:
Massa específica e teor de umidade ao longo do fuste para cordia trichotoma e cordia americana e suas correlações
Authors: Zanchetta Laura Da Silva , Bandera Eduarda , Mangini Tauana De Souza , Candaten Luana , Iora Adriana Maria , Trautenmüller Jonathan William , Trevisan Rômulo , Eloy Elder 
Published: September 2020

A variação da massa específica da madeira pode ocorrer entre e dentre espécies e até mesmo dentro da mesma árvore. A compreensão do comportamento dessa propriedade, através da relação entre espécies do mesmo gênero, é relevante para avaliar os usos dessas madeiras para os fins pretendidos. Por esta razão, o objetivo desse estudo foi determinar a massa específica e teor de umidade ao longo do fuste para Cordia trichotoma e Cordia americana e suas correlações quanto as propriedades físicas. As árvores selecionadas de ambos indivíduos foram seccionadas em discos nas posições relativas de 25, 50, 75 e 100%, considerando a altura comercial determinada a partir do primeiro galho vivo, bem como a 0,10m (altura do toco) e no DAP (1,30 m do solo), de onde retirou-se cunhas para a determinação da variação longitudinal e correlações do teor de umidade, massa específica básica, aparente seco ao ar (14 a 15% na região do estudo) e saturada. Os resultados indicaram um decréscimo dos valores de todas as massas específicas nas posições base-topo para as duas espécies florestais analisadas, variação inversa ao apresentado pelo teor de umidade do material. Com base nos dados analisados, os parâmetros físicos da madeira de ambas as espécies apresentaram correlações positivas entre si. Os valores médios aritméticos de massa específica básica para as madeiras de C. trichotoma e C. americana, 0,379 e 0,484 g/cm³, respectivamente, caracterizam os materiais para uso na fabricação de móveis, lâminas faqueadas e peças valiosas tornadas.
Reestablishing Indonesian Madhhab: ‘Urf and the Contribution of Intellectualism
Authors: Najib Agus Moh 
Published: September 2020

The notion of Indonesian madhhab (school of Islamic law) is usually considered to have stopped with Hasbi and Hazairin. On the contrary, The notion of Indonesian madhhab has continued to grow and develop. Even though it has a variety of styles and trends, all of the notions of Indonesian madhhab have the same characteristics that are both contextual and formal. In addition to trying to formulate Islamic law in accordance with the context of Indonesian society, it also seeks to apply the results into statutory regulationswith formal applications. With such characteristics, the Indonesian madhhab places ‘urf (customs and community context) in a very important position as the main consideration in establishing Islamic law. Methodologically, to produce Islamic law in accordance with the Indonesian context, the Qur`anic text and the Hadith of the Prophet dialogue with Indonesian ‘urf. By using a historical approach to Islamic legal thinking, this article discusses the development of the ‘urf concept as put forward by the thinkers of Indonesian madhhab, since its emergence until now, and then discusses the influence of the notion of Indonesian madhhab regarding ‘urf in the legal products related to Islamic law in Indonesia. Following that scheme, this study found that the notion of Indonesian madhhab continues to develop along with the development of scholarly thinking about ‘urf from its thinkers.[Pemikiran tentang mazhab Indonesia biasanya dianggap telah berhenti sampai Hasbi dan Hazairin. Namun sebenarnya, pemikiran mazhab Indonesia tersebut terus mengalami perkembangan sampai dengan sekarang. Walaupun memiliki berbagai macam corak dan kecenderungan, namun semua pemikiran mazhab Indonesia tersebut memiliki karakteristik yang sama, yaitu bersifat kontekstual dan formal. Pemikiran mazhab Indonesia disamping berupaya memformulasikan hukum Islam sesuai dengan konteks masyarakat Indonesia, juga berusaha untuk menjadikan hasil formulasinya tersebut sebagai aturan perundang-undangan yang berlaku secara formal. Dengan karakteristiknya yang semacam itu, mazhab Indonesia menempatkan ‘urf (adat dan konteks masyarakat) pada posisi yang sangat penting sebagai dasar pertimbangan utama dalam penetapan hukum Islam. Secara metodologis, untuk menghasilkan hukum Islam yang sesuai dengan konteks Indonesia, dalam pemikiran mazhab Indonesia, teks Qur`an dan Hadis Nabi didialogkan dengan ‘urf Indonesia. Dengan menggunakan pendekatan sejarah terhadap pemikiran hukum Islam, artikel ini membahas perkembangan konsep ‘urf yang dikemukakan oleh para pemikir mazhab Indonesia, sejak mulai dicetuskannya hingga saat ini, kemudian dibahas juga pengaruh dari pemikiran mazhab Indonesia tentang ‘urf tersebut dalam produk aturan perundang-undangan yang terkait dengan hukum Islam di Indonesia. Dengan kajian tersebut, artikel ini menemukan bahwa pemikiran mazhab Indonesia terus berkembang seiring dengan perkembangan pemikiran tentang ‘urf dari para tokohnya.]
THE FUNCTIONAL STATUS OF THE CENTRAL NERVOUS SYSTEM IN MEDICAL STUDENTS IN THE MIDDLE OB REGION
Authors: Litovchenko Olga Gennadievna , Maksimova Anna Sergeevna , Barsegyan Siranush Tigranovna 
Published: September 2020

In uncomfortable conditions, high academic load leads to adaptive changes in medical students. The functional status and level of functional capacities in students determines the effectiveness of adaptation and cognitive performance. Aim. The article aims to identify the features of the functional status of the central nervous system using the data of simple visual-motor reaction in medical students studying in the northern region. Materials and methods. 95 students were examined, 51 females and 44 males. The average age was 19.62 ± 1.57 years. The indicators of variational chronoreflexometry were determined through the data of simple visual-motor reaction. The level of functional capacities of the central nervous system, the stability of reactions, and the functional level of the system were calculated. The study was carried in accordance with the method proposed by M.P. Moroz (Express-diagnostics of the functional status and human performance). Results. It was established that in most cases the functional status of the central nervous system in medical students corresponded with reduced and slightly reduced mental performance. Simple visual-motor reaction time in male and female students was 280.47 ± 2.34 ms and 278.09 ± 2.92 ms, respectively. Significant differences were not revealed among the studied groups. Conclusion. The functional status of the central nervous system in medical students of the Middle Ob region is characterized by high neuropsychic tension, increased fatigue, decreased working capacity, weakened attention and concentration.
Identifikasi Bikeability Sebagai Pendukung Kebijakan Transportasi Berkelanjutan di Kota Yogyakarta
Authors: Kurniadhini Faricha , Roychansyah Muhammad Sani 
Published: September 2020

Transportasi berkelanjutan menjadi kebutuhan baru Kota Yogyakarta untuk mengatasi permasalahan transportasi seperti kemacetan lalu lintas dan meningkatnya polusi udara. Memiliki sejarah sebagai kota sepeda, Kota Yogyakarta memiliki semangat untuk mengembalikan citra tersebut di tengah meningkatnya jumlah kendaraan bermotor di Kota Yogyakarta. Tahun 2008, pemerintah Kota Yogyakarta mengampanyekan sebuah semangat untuk mengajak penduduk menggunakan sepeda dalam bekerja dan sekolah. Namun demikian, semangat mengembalikan citra sebagai kota sepeda akan menjadi lebih baik jika pemerintah telah siap dalam hal kelembagaan dan infrastruktur untuk sepeda. Lalu, bagaimana kesiapan Kota Yogyakarta dalam memfasilitasi ajakan bersepeda tersebut? Penelitian ini bertujuan untuk mengidentifikasi kemampuan Kota Yogyakarta dalam hal keramahan untuk bersepeda atau disebut sebagai bikeability. Bikeability Kota Yogyakarta dapat dilihat melalui aspek spasial dan kelembagaan yang ada. Aspek spasial dalam bikeability diketahui dengan menggunakan metode Spatial Multi Criteria Analysis (SMCA) dan aspek kelembagaan diketahui dengan Ecomobility Readiness Assessment. Ketiga analisis tersebut memberikan hasil bahwa Kota Yogyakarta memiliki karakteristik fisik yang mendukung transportasi sepeda. Selain itu, perjalanan penduduk yang banyak dilakukan di dalam Kota Yogyakarta memberikan optimisme Kota Yogyakarta kembali menjadi kota sepeda. Hal ini diperjelas dengan komitmen pemerintah dalam memprioritaskan pesepeda dan pejalan kaki dalam kebijakan transportasi di Kota Yogyakarta. Sustainable transportation is a new necessity for Yogyakarta to overcome transportation problems such as traffic congestion and increased air pollution. Having a history as cycling city, Yogyakarta has a spirit to restore the image although it experiences the increasing number of motorized vehicles. In 2008, the government campaigned for inviting residents to use bicycle to go to work and schools. However, the spirit of returning the image of cycling city will be better if the government is capable in terms of institution and infrastructure for cycling. According to that, how is the bikeability condition and the readiness of Yogyakarta in accommodating cycling movement? This research aims to identify the ability of Yogyakarta in terms of friendliness for cycling or called bikeability. Bikeability of Yogyakarta can be identified by looking at the existing spatial and institutional aspects. The spatial aspect of bikeability is identified using the Spatial Multi-Criteria Analysis (SMCA) method while the institutional aspects is known by using Ecomobility Readiness Assessment Scorecard. Both analysis result that Yogyakarta has a good condition of physical characteristic that can promote cycling. It is strengthened by the government’s commitment in prioritizing cyclists and pedestrians in transportation policies of Yogyakarta.
Analyzing the impact of system architecture on the scalability of OLTP engines for high-contention workloads
Authors: Appuswamy Raja , Anadiotis Angelos C. , Porobic Danica , Iman Mustafa K. , Ailamaki Anastasia 
Published: September 2020

Main-memory OLTP engines are being increasingly deployed on multicore servers that provide abundant thread-level parallelism. However, recent research has shown that even the state-of-the-art OLTP engines are unable to exploit available parallelism for high contention workloads. While previous studies have shown the lack of scalability of all popular concurrency control protocols, they consider only one system architecture---a non-partitioned, shared everything one where transactions can be scheduled to run on any core and can access any data or metadata stored in shared memory.
In this paper, we perform a thorough analysis of the impact of other architectural alternatives (Data-oriented transaction execution, Partitioned Serial Execution, and Delegation) on scalability under high contention scenarios. In doing so, we present Trireme, a main-memory OLTP engine testbed that implements four system architectures and several popular concurrency control protocols in a single code base. Using Trireme, we present an extensive experimental study to understand i) the impact of each system architecture on overall scalability, ii) the interaction between system architecture and concurrency control protocols, and iii) the pros and cons of new architectures that have been proposed recently to explicitly deal with high-contention workloads.
Discovery of approximate (and exact) denial constraints
Authors: Pena Eduardo H. M. , de Almeida Eduardo C. , Naumann Felix 
Published: September 2020

Maintaining data consistency is known to be hard. Recent approaches have relied on integrity constraints to deal with the problem - correct and complete constraints naturally work towards data consistency. State-of-the-art data cleaning frameworks have used the formalism known as denial constraint (DC) to handle a wide range of real-world constraints. Each DC expresses a relationship between predicates that indicate which combinations of attribute values are inconsistent. The design of DCs, however, must keep pace with the complexity of data and applications.
The alternative to designing DCs by hand is automatically discovering DCs from data, which is computationally expensive due to the large search space of DCs. To tackle this challenging task, we present a novel algorithm to efficiently discover DCs: DCFinder. The algorithm combines data structures called position list indexes with techniques based on predicate selectivity to efficiently validate DC candidates. Because the available data often contain errors, DCFinder is especially designed to discovering approximate DCs, i.e., DCs that may partially hold. Our experimental evaluation uses real and synthetic datasets and shows that DCFinder outperforms all the existing approximate DC discovery algorithms.
Development and validation of RP-HPLC/UV methods for the estimation of Risedronate sodium in pure and pharmaceutical dosage form
Authors: Subramaniam Ananda Thangadurai , Velmurugan Devi , Ramanathan Sambathkumar , Dhanabalan Kamalakannan , Munusamy Jambulingam , Gampala Hemanth 
Published: September 2020

Recent study was conducted to develop and validate analytical methods for estimation ofÂ Risedronate sodium in pure and pharmaceutical dosage form using UV Spectroscopy andÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â RP- HPLC method.Â The first method (Method A)Â based on the UV Spectroscopy usingÂ 0.1M Hcl as diluent lambda max was found at 261 nm. Linearity existed perceived in the concentration between 10-50 Î¼g/ml (rÂ 2Â = 0.999) for the method. The method was validated pertaining to linearity, precision and accuracy studies, LOD and LOQ consistent with ICH guidelines.Â The second method (Method B), based on determination ofÂ Risedronate sodium tablet dosage form by RP-HPLC method.Â Â Chromatography separation was carried out on aÂ C18Â (150X4.6 mm x5 Âµ) SS Column using Methanol: Ammonium formate (85:15) as the mobile phase at a flow rate ofÂ Â Â 1.0 ml/min.Â The chromatographic analysis was carried out in the reflectance and absorbance mode at 254 nm and retention time of the drug was found to be 1.11 ml/min for standard and tablet. Linear responses of the drug were in the concentration range of 200-1000Â Âµg/ml. The accuracy of the method was assessed by standard dilution method and found to be 98% toÂ Â Â Â Â Â Â Â Â Â Â Â Â Â 102%Â .The results of the analysis were validated statistically prism software.Â The method established was found to be simple, precise, linear, accurate and sensitive. The developed method can be used for routine quality control analysis ofÂ Risedronate sodiumÂ in pure and pharmaceutical dosage form.
BatchDeconvolution: a Fiji plugin for increasing deconvolution workflow
Authors: Baster Zbigniew , Rajfur Zenon 
Published: September 2020

Abstract
Deconvolution microscopy is a very useful, software-based technique allowing to deblur microscopy images and increase both lateral and axial resolutions. It can be used along with many of fluorescence microscopy imaging techniques. By increasing axial resolution, it also enables three-dimensional imaging using a basic wide-field fluorescence microscope. Unfortunately, commercially available deconvolution software is expensive, while freely available programs have limited capabilities of a batch file processing. In this work we present BatchDeconvolution, a Fiji plugin that bridges two programs that we used subsequently in an image deconvolution pipeline: PSF Generator and DeconvolutionLab2, both from Biomedical Imaging Group, EPFL. Our software provides a simple way to perform a batch processing of multiple microscopy files with minimal working time required from the user.
CircHIPK3/miR-381-3p axis modulates proliferation, migration, and glycolysis of lung cancer cells by regulating the AKT/mTOR signaling pathway
Authors: Gu Feng , Zhang Junhan , Yan Lin , Li Dong 
Published: September 2020

AbstractLung cancer is a lethal malignancy. Plenty of circular RNAs (circRNAs) have been identified to be the vital regulators in lung cancer development. Here, we intended to clarify the functional role of circRNA HIPK3 (circHIPK3, also called hsa_circ_0021593) and its underlying mechanism of action. Quantitative reverse transcription-polymerase chain reaction (qRT-PCR) was employed to evaluate the levels of circHIPK3 and miR-381-3p. Cell viability and apoptosis rate were monitored by Cell Counting Kit-8 assay and flow cytometry, respectively. Cell migration was estimated through the Transwell assay. To assess glycolysis, commercial kits were utilized to measure the levels of glucose and lactate and the enzyme activity of hexokinase-2 (HK2). Expression of related proteins was detected via western blot analysis. The target connection between circHIPK3 and miR-381-3p was validated by dual-luciferase reporter, RIP, and pull-down assays. The role of circHIPK3 in vivo was determined via the xenograft assay. CircHIPK3 was upregulated, while miR-381-3p was downregulated in lung cancer tissues and cells. And circHIPK3 deficiency inhibited lung cancer progression by lowering cell proliferation, migration, glycolysis, and promoting apoptosis of lung cancer cells in vitro. MiR-381-3p was a target of circHIPK3, and miR-381-3p interference alleviated circHIPK3 knockdown-induced lung cancer progression inhibition. CircHIPK3 could activate the protein kinase B/mammalian target of rapamycin (AKT/mTOR) signaling pathway. Moreover, circHIPK3 knockdown suppressed tumor growth in vivo by inactivating the AKT/mTOR signaling pathway. In conclusion, the silencing of circHIPK3 inhibited lung cancer progression, at least in part, by sponging miR-381-3p and inactivating the AKT/mTOR signaling pathway.
Adaptive Space-Time Finite Element Methods for Non-autonomous Parabolic Problems with Distributional Sources
Authors: Langer Ulrich , Schafelner Andreas 
Published: September 2020

Abstract
We consider locally stabilized, conforming finite element schemes on completely unstructured simplicial space-time meshes for the numerical solution of parabolic initial-boundary value problems with variable coefficients that are possibly discontinuous in space and time.
Distributional sources are also admitted.
Discontinuous coefficients, non-smooth boundaries, changing boundary conditions, non-smooth or incompatible initial conditions, and non-smooth right-hand sides can lead to non-smooth solutions.
We present new a priori and a posteriori error estimates for low-regularity solutions.
In order to avoid reduced rates of convergence that appear when performing uniform mesh refinement, we also consider adaptive refinement procedures based on residual a posteriori error indicators and functional a posteriori error estimators.
The huge system of space-time finite element equations is then solved by means of GMRES preconditioned by space-time algebraic multigrid.
In particular, in the 4d space-time case, simultaneous space-time parallelization can considerably reduce the computational time.
We present and discuss numerical results for several examples possessing different regularity features.
NMR Protein Structure Calculation and Sphere Intersections
Authors: Lavor Carlile , Alves Rafael , Souza Michael , José Luis Aragón 
Published: September 2020

Abstract
Nuclear Magnetic Resonance (NMR) experiments can be used to calculate 3D protein structures and geometric properties of protein molecules allow us to solve the problem iteratively using a combinatorial method, called Branch-and-Prune (BP). The main step of BP algorithm is to intersect three spheres centered at the positions for atoms i − 3, i − 2, i − 1, with radii given by the atomic distances di
−3,
i, di
−2,
i, di
−1,
i, respectively, to obtain the position for atom i. Because of uncertainty in NMR data, some of the distances di
−3,
i should be represented as interval distances [

d
_

i
-
3
,
i

,

d
¯

i
-
3
,
i

{\underline{d}_{i - 3,i}},{\bar d_{i - 3,i}}

], where

d
_

i
-
3
,
i

≤

d

i
-
3
,
i

≤

d
¯

i
-
3
,
i

{\underline{d}_{i - 3,i}} \le {d_{i - 3,i}} \le {\bar d_{i - 3,i}}

. In the literature, an extension of the BP algorithm was proposed to deal with interval distances, where the idea is to sample values from [

d
_

i
-
3
,
i

,

d
¯

i
-
3
,
i

{\underline{d}_{i - 3,i}},{\bar d_{i - 3,i}}

]. We present a new method, based on conformal geometric algebra, to reduce the size of [

d
_

i
-
3
,
i

,

d
¯

i
-
3
,
i

{\underline{d}_{i - 3,i}},{\bar d_{i - 3,i}}

], before the sampling process. We also compare it with another approach proposed in the literature.
Dropping out from Higher Education in Germany an Empirical Evaluation of Determinants for Bachelor Students
Authors: Behr Andreas , Giese Marco , Teguim K. Hervé D. , Theune Katja 
Published: September 2020

AbstractWithdrawing from university is a complex decision-making process, during which several conditions and problems from different areas of life and study accumulate and affect each other. This study is based on the National Educational Panel Study (NEPS), which includes a wide range of information on study course and students’ characteristics, and aims at providing an encompassing analysis of determinants influencing students’ dropout decision. Determinants can be categorized into demographic and family background, the financial situation of students, their prior education, institutional determinants, as well as motivation and satisfaction with study. Both, a bivariate analysis, as well as a logistic regression model with LASSO regularization identify many important determinants already known before or at the beginning of the study, such as prior education and satisfaction related variables, allowing early identification of at-risk students and the implementation of prevention programs.
Opportunity Recognition: Conversational Foundations and Pathways Ahead
Authors: Filser Matthias , Tiberius Victor , Kraus Sascha , Zeitlhofer Tanita , Kailer Norbert , Müller Adrian 
Published: September 2020

Abstract
This paper provides an overview of the ever-increasing literature on opportunity recognition, with a focus on its antecedents and determinants. With a two-step research approach, a bibliometric analysis and a systematic literature review, we structure the current research in this field. By using bibliometric techniques, we analyzed 161 publications and, consequently, clustered the 30 most influential references. Apart from economic theories and the role of opportunity recognition in entrepreneurship, a strong research focus is on antecedents of opportunity recognition. Therefore, in our subsequent literature review, we focus on determinants which influence opportunity recognition. We find that the opportunity recognition process is influenced by various personal, organizational and environmental factors. We conclude with a research outlook for future research opportunities on opportunity recognition.