bluuebunny/crossref_metadata_2025_split huggingface dataset:
Analisis Kinerja Laporan Keuangan dengan Menggunakan Rasio Likuiditas dan Rasio Profitabilitas pada PT Sarinah (Persero
Authors: Iranie Nizarlie Eriene 
Published: April 2024

Penelitian ini bertujuan untuk menganalisis dan menilai bagaimana kinerja keuangan dengan menggunakan Rasio Likuiditas dan Rasio Profitabilitas pada PT. Sarinah (Persero) dengan menggunakan Keputusan Mentri Badan Usaha Milik Negara (BUMN) KEP-100/MBU/2002. Penelitian ini dilakukan dengan menggunakan penelitian deskriptif dengan menggunakan data kuantitatif. Teknik pengumpulan data yang digunakan adalah studi literasi. Berdasarkan hasil penelitian yang dilakukan diperoleh hasil bahwa rasio likuiditas yaitu rasio kas (cash ratio) dan Rasio lancar (current ratio) pada periode 2020-2022 belum mencapai Standar penilaian kesehatan BUMN. Dari sisi rasio profitabilitas yaitu return on investment (ROI) dan Return on equity (ROE) pada periode 2020-2022 nilainya juga belum mencapai standar penilaian kesehatan BUMN. Hal ini menunjukan bahwa kinerja keuangan perusahaan kurang baik dan menyebabkan kerugian dari perusahaan.
UTILIZING NATURAL LANGUAGE PROCESSING TO CLASSIFY FAKE NEWS ARTICLES: IDENTIFYING IN-ARTICLE ATTRIBUTION AS A SUPERVISED LEARNING ESTIMATOR
Authors: Firoze Pattan , BABU K. Ramesh , KUMAR K. Kiran , Charan Raju Venkata Sai 
Published: April 2024

There is a growing need for computational tools that can provide insights on the dependability of online content due to the prevalence of false information in widely accessible media channels including social media feeds, news blogs, and online newspapers. In this study, we explore methods for detecting fabricated news stories in real time. There are two sides to our help. We begin by presenting two new datasets for the fake news detection problem, which together span seven distinct news domains. We give many exploratory analyses aimed at discerning linguistic differences between fake and genuine news information, and we discuss the collecting, annotation, and validation procedure in great detail. We then use the results of these experiments to develop reliable false news detectors. Furthermore, we offer evaluations contrasting machine and human detection of bogus news.
The news that circulates through social media networks is a particularly valuable source of information today. It's easy to see why people are so drawn to internet-based news: there's very little effort required, the information is readily available, and it spreads quickly. Since Twitter is one of the most widely used real-time news platforms, it also ranks highly when it comes to the dissemination of news. In the past, gossip has been shown to do significant harm by disseminating false information.
Vertical farming for lettuce production in limited space: a case study in Northern Thailand
Authors: Wicharuck Suwimon , Khongdee Nuttapon , Man Ar , Syahputra Wahyu Nurkholis Hadi , Yalangkan Parichat , Chaiphak Prapaporn , Chaichana Chatchawan 
Published: April 2024

Background
Greenhouse vertical farming under natural sunlight is an alternative farming technique that grows crops in a stacking column and extends in a vertical direction. Sunlight availability is one of the crucial factors for crop development in vertical farming. Therefore, this investigation aimed to examine the effect of sunlight availability on lettuce growth and yields at different levels of vertical shelves.

Methods
Six shelves were constructed with three levels: upper, middle and lower levels. Lettuces (Lactuca sativa L.) as ‘Baby Cos’ and ‘Green Oak’ at 14 days after sowing were planted on the three levels. The photosynthetic photon flux density (PPFD) was recorded, and the PPFD values were then converted to the daily light integral (DLI). Plant height and canopy width were measured three times at 14, 21 and 28 days after transplanting. At maturity, fresh weight (FW) was directly monitored after harvest.

Results
The results showed that the highest PPFD and DLI values were found at the upper level (PPFD 697 μmol m−2 s−1 and DLI 29 mol m−2 d−1) in comparison to the middle (PPFD 391 μmol m−2 s−1 and DLI 16 mol m−2 d−1) and lower (PPFD 322 μmol m−2 s−1 and DLI 13 mol m−2 d−1) levels. The lowest plant height and canopy width values were observed on the upper levels for both lettuce varieties during the three measurement dates. The middle (‘Baby Cos’ = 123.8 g plant−1 and ‘Green Oak’ = 190.7 g plant−1) and lower (‘Baby Cos’ = 92.9 g plant−1 and ‘Green Oak’ = 203.7 g plant−1) levels had the higher values of FW in comparison to the upper level (‘Baby Cos’ = 84.5 g plant−1 and ‘Green Oak’ = 97.3 g plant−1). The values of light use efficiency (LUE) showed an increased trend from the upper to lower levels in both varieties, with values of ‘Baby Cos’ of 0.10 g mol−1 in the upper level, 0.28 g mol−1 in the middle level and 0.26 g mol−1 in the lower level and ‘Green Oak’ of 0.12 g mol−1 in the upper level, 0.44 g mol−1 in the middle level and 0.57 g mol−1 in the lower level. The findings of the study indicated the viability of utilizing vertical shelves for lettuce production.
Sustainable Safety and Environmental Protection Technologies in Oil and Gas Industry
Authors: Okolie Allison Chinedu , Ojialor Chinenye , Adebola Adenusi Adefolarin , Okeyode Ayodeji 
Published: April 2024

Aim: This paper examines the concepts of oil and gas production, effects of the operations on the environment and relevant environmental protection technologies to make the industry a sustainable one.
Problem Statement: Reports show environmental pollution and ecosystem disruption emanating from oil and gas operations which are majorly exploration, production and distribution to end-users. This makes the environment to be unhealthy for living and causes breakage in food chain.
Significance of Study: High relevance of oil and gas industry to the economic growth of a Nation has made it imperative to critically address the adverse effects attributed to the operations involved. Tackling the accorded problems via current environmental protection technologies will prevent operational accidents and minimize environmental pollution. With this, lives are protected, environment is kept safe, and the industry is enhanced for future sustainability.
Discussions: The upstream, midstream and downstream operations that make up the oil and gas value chain were discussed. The philosophy of sustainability and sustainable development as pertained to environmental pollution and disruption of ecosystem by the operations of oil and gas industries were discussed. Reasons why round table talk should be conducted from time to time by all stakeholders as related to environmental sustainability of Oil and Gas industries in years to come were discussed. The adopted technologies to ensure there is safety and environmental protections were stated within.
Conclusion: In conclusion, there is need for further research on effective technologies to improve the existing ones in terms of making safety and environmental protection from oil and gas industry a sustainable one.
Fault detection of networked control systems with packet based periodic communication
Authors: Wang Yongqiang , Ding Steven X. , Ye Hao , Wei Li , Zhang Ping , Wang Guizeng 
Published: July 2008

AbstractFault detection of networked control systems (NCS) with communication constraints is discussed in this paper. A so‐called packet‐based periodic communication strategy is proposed and two kinds of optimal observer‐based residual generators are designed. One residual generator is designed based on the lifted model of NCS, which generates residual signals every communication period. The other works at a faster rate, i.e. it generates residual signals every sampling period and is more suitable for prompt fault detection. Comparison with traditional periodic‐communication‐sequence‐based scheduling strategy reveals superiority of this new communication strategy. Simulation results are also provided to illustrate effectiveness of the proposed method. Copyright © 2008 John Wiley & Sons, Ltd.
Nanostructured LiNi1/3Co1/3Mn1/3O2 as a cathode material for high‐power lithium‐ion battery
Authors: Li Xinlu , Shi Xiujuan , Huang Zheng‐Hong , Kang Feiyu , Shen Wanci 
Published: July 2008

AbstractNanocrystalline LiNi1/3Co1/3Mn1/3O2 was synthesized by a sol–gel method. Thermal history of the gel was analyzed by thermogravimetric (TG) analysis and differential thermal analysis (DTA). Powders X‐ray diffraction (XRD) proved the formation of layered α‐NaFeO2 hexagonal lattice. Scanning electron microscopy (SEM) showed that original particles were of the size range of 200–300 nm. The discharge capacity was 183 mAh/g in the first cycle with 87.5% capacity retention in 30 cycles at C/10 rate in 3.0–4.5 V potential range. Copyright © 2008 Curtin University of Technology and John Wiley & Sons, Ltd.
Modification of HY zeolite by fluorine and its influence on olefin alkylation thiophenic sulfur in gasoline
Authors: Zhang Zekai , Li Xiujie , Zhang Ling , Zhu Xiangxue , Liu Shenglin , Xu Longya 
Published: July 2008

AbstractThe catalytic performance of a series of HY zeolites, modified by HF for olefin alkylation thiophenic sulfur (OATS) process, was evaluated. It was found that acid sites distribution could be controlled through the amount of HF. Under the optimized condition, activity, and selectivity of thiophene alkylation reaction in OATS could be greatly improved. At the same time, coking behavior was suppressed during the course. Copyright © 2008 Curtin University of Technology and John Wiley & Sons, Ltd.
A usability study of users' perceptions toward a multimedia computer‐assisted learning tool for neuroanatomy
Authors: Gould Douglas J. , Terrell Mark A. , Fleming Jo 
Published: July 2008

AbstractThis usability study evaluated users' perceptions of a multimedia prototype for a new e‐learning tool: Anatomy of the Central Nervous System: A Multimedia Course. Usability testing is a collection of formative evaluation methods that inform the developmental design of e‐learning tools to maximize user acceptance, satisfaction, and adoption. Sixty‐two study participants piloted the prototype and completed a usability questionnaire designed to measure two usability properties: program need and program applicability. Statistical analyses were used to test the hypothesis that the multimedia prototype was well designed and highly usable, it was perceived as: (1) highly needed across a spectrum of educational contexts, (2) highly applicable in supporting the pedagogical processes of teaching and learning neuroanatomy, and (3) was highly usable by all types of users. Three independent variables represented user differences: level of expertise (faculty vs. student), age, and gender. Analysis of the results supports the research hypotheses that the prototype was designed well for different types of users in various educational contexts and for supporting the pedagogy of neuroanatomy. In addition, the results suggest that the multimedia program will be most useful as a neuroanatomy review tool for health‐professions students preparing for licensing or board exams. This study demonstrates the importance of integrating quality properties of usability with principles of human learning during the instructional design process for multimedia products. Anat Sci Ed 2008. © 2008 American Association of Anatomists.
Coordination of staffing and pricing decisions in a service firm
Authors: Serel Doǧan A. , Erel Erdal 
Published: July 2008

AbstractCustomer demand is sensitive to the price paid for the service in many service environments. Using queueing theory framework, we develop profit maximization models for jointly determining the price and the staffing level in a service company. The models include constraints on the average waiting time and the blocking probability. We show convexity of the single‐variable subproblem under certain plausible assumptions on the demand and staffing cost functions. Using numerical examples, we investigate the sensitivity of the price and the staffing level to changes in the marginal service cost and the user‐specified constraint on the congestion measure. Copyright © 2008 John Wiley & Sons, Ltd.
Security considerations in blinded exposure experiments using electromagnetic waves
Authors: Wolf Christian 
Published: July 2008

AbstractWhether exposure to electromagnetic fields well below accepted exposure limits has a cytogenetic effect on human cells has long been debated. It is widely published and generally accepted that the exposure unit invariably used in these experiments is capable of providing blinded exposure conditions. The following short report illustrates, however, that exposure conditions might not always be as effectively masked as is generally assumed. Bioelectromagnetics 29:658–659, 2008. © 2008 Wiley‐Liss, Inc.
A Model Free Approach to Combining Biomarkers
Authors: Pfeiffer Ruth M. , Bur Efstathia 
Published: July 2008

AbstractFor most diseases, single biomarkers do not have adequate sensitivity or specificity for practical purposes. We present an approach to combine several biomarkers into a composite marker score without assuming a model for the distribution of the predictors. Using sufficient dimension reduction techniques, we replace the original markers with a lower‐dimensional version, obtained through linear transformations of markers that contain sufficient information for regression of the predictors on the outcome. We combine the linear transformations using their asymptotic properties into a scalar diagnostic score via the likelihood ratio statistic. The performance of this score is assessed by the area under the receiver‐operator characteristics curve (ROC), a popular summary measure of the discriminatory ability of a single continuous diagnostic marker for binary disease outcomes. An asymptotic chi‐squared test for assessing individual biomarker contribution to the diagnostic score is also derived. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Dose Finding – A Challenge in Statistics
Authors: Bretz Frank , Hsu Jason , Pinheiro José , Liu Yi 
Published: July 2008

AbstractA good understanding and characterization of the dose response relationship of any new compound is an important and ubiquitous problem in many areas of scientific investigation. This is especially true in the context of pharmaceutical drug development, where it is mandatory to launch safe drugs which demonstrate a clinically relevant effect. Selecting a dose too high may result in unacceptable safety problems, while selecting a dose too low may lead to ineffective drugs. Dose finding studies thus play a key role in any drug development program and are often the gate‐keeper for large confirmatory studies.In this overview paper we focus on definitive and confirmatory dose finding studies in Phase II or III, reviewing relevant statistical design and analysis methods. In particular, we describe multiple comparison procedures, modeling approaches, and hybrid methods combining the advantages of both. An outlook to adaptive dose finding methods is also given. We use a real data example to illustrate the methods, together with a brief overview of relevant software. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
A Study on Confidence Intervals for Incremental Cost‐Effectiveness Ratios
Authors: Wang Hongkun , Zhao Hongwei 
Published: July 2008

AbstractIn health policy and economics studies, the incremental cost‐effectiveness ratio (ICER) has long been used to compare the economic consequences relative to the health benefits of therapies. Due to the skewed distributions of the costs and ICERs, much research has been done on how to obtain confidence intervals of ICERs, using either parametric or nonparametric methods, with or without the presence of censoring. In this paper, we will examine and compare the finite sample performance of many approaches via simulation studies. For the special situation when the health effect of the treatment is not statistically significant, we will propose a new bootstrapping approach to improve upon the bootstrap percentile method that is currently available. The most efficient way of constructing confidence intervals will be identified and extended to the censored data case. Finally, a data example from a cardiovascular clinical trial is used to demonstrate the application of these methods. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Controllable Preparation of Monodispersed Calcium Alginate Microbeads in a Novel Microfluidic System
Authors: Xu J. H. , Li S. W. , Tan J. , Luo G. S. 
Published: July 2008

AbstractThis work describes a novel method for the preparation of monodispersed calcium alginate microbeads in a microfluidic device. A novel microfluidic device comprising of two cross‐junction channels and a synthesizing channel was designed by controlling the mixing condition with laminar flow and two‐phase droplet flow in microfluidic devices. At the first junction, the side two streams, sodium alginate aqueous solution and calcium chloride aqueous solution, were separated to prevent contact by the injection of deionized water in the middle channel. Then the aqueous mixture solution was induced into monodispersed droplets by a focusing sheath of immiscible oil phase at the second junction. The formed droplets were solidified in situ in the synthesizing channel with the rapid mixing of reactants in the droplets. The size of the Ca‐alginate microbeads can be controlled from 50–300 μm in diameter with a variation of less than 2 %, simply by changing the two‐phase flow ratio. The proposed microfluidic platform is capable of generating uniform emulsions and has the advantages of in situ solidification and good control of particle size.
Pressure Loss and Transfer Rates in Microstructured Devices with Chemical Reactions
Authors: Kockmann N. 
Published: July 2008

AbstractEnhanced transport phenomena are essential for chemical reactions in continuous flow microstructured equipment. Flow regimes and heat transfer are governed by laminar and transitional conditions to turbulence. In channel curves and meandering channels, secondary flow structures appear, starting from Dean flow with a vortex pair to more chaotic flow structures at higher Re numbers. The geometry and cross‐section of the smallest channel determine the pressure loss and energy dissipation of the entire system. Heat and mass transfer is greatly influenced by the flow regime, which leads to transport enhancement conjointly with miniaturization. It is shown that the pressure loss and energy dissipation can be used to determine heat transfer coefficients and mixing characteristics. Chemical reactions are characterized by their kinetics and stoichiometry. Rapid mixing depends on the pressure loss in the microchannel, where the time scales are important. Dimensionless numbers assist the appropriate and successful design of microreactors concerning mixing, residence time, and heat transfer.
Microstructured Devices for Preparing Controlled Multiple Emulsions
Authors: Nisisako T. 
Published: July 2008

AbstractThe preparation of multiple emulsions with controlled droplet sizes and internal structures has been a challenge for a long time. However, in recent years, a major breakthrough has been achieved in the preparation of monodisperse single emulsions by small‐scale fluid processing, which has enabled the formation of multiple emulsions with the desired droplet sizes, structures, and compositions. This review deals with the preparation of controlled multiple emulsions in various microstructured devices. The four preparation pathways are discussed individually. They are (a) membrane emulsification, (b) microchannel emulsification, (c) the use of a two‐dimensional microfluidic device, and (d) the use of a three‐dimensional coaxial microcapillary device. The applications of the prepared multiple emulsions to a novel class of materials are also discussed.
Micromixer Characterization with Competitive‐Consecutive Bromination of 1,3,5‐Trimethoxybenzene
Authors: Hecht K. J. , Kölbl A. , Kraut M. , Schubert K. 
Published: July 2008

AbstractMixing sensitive reactions that preserve mixing results in the product distribution can be used to characterize mixing devices. The competitive‐consecutive reaction of bromine with 1,3,5‐trimethoxybenzene was applied to four static mixer devices ranging in size from several millimeters to several micrometers. The commonly used parallel‐competitive reaction of iodate and borate with acid was also used for comparison purposes. Both methods were suitable for characterizing all mixing devices. The iodide/iodate reaction method required the use of multiple concentrations of the reactants in the feed streams, whereas the bromination reaction method allowed characterization of all devices at the same feed concentrations. Only devices characterized at the same reactant concentrations can be directly compared.
Extrusion zur Gestaltung von Lebensmittelstrukturen
Authors: Schuchmann H. P. 
Published: July 2008

AbstractDie Extrusion findet bei der Herstellung von konsumentengerechten Lebensmitteln immer weitere Verbreitung, da thermische und mechanische Grundoperationen mit Texturgebenden Prozessschritten in einer verfahrenstechnische Anlage verbunden werden können. Trotz zahlreicher Erkenntnisse aus dem Bereich der Kunststoffextrusion ist im Bereich der Lebensmittelverarbeitung das zur gezielten Produktgestaltung benötigte Prozessverständnis zurzeit noch nicht ausreichend. Dieser Übersichtsbeitrag fasst den Stand des Wissens zusammen und zeigt aktuelle Forschungsansätze.
Determination of minimum speed required for solids suspension in stirred vessels using pressure measurements
Authors: Selima Y. S. , Fangary Y. S. , Mahmoud N. A. 
Published: July 2008

AbstractThe minimum speed required for complete suspension (Njs) is a major parameter for solids suspension in stirred tanks. Micale et al. 7th UK Conference on Mixing (2002) determined Njs by using a pressure gauge technique in a model vessel. In the present work Njs was measured by the same later technique in a more practical vessel with varying C/T ratio and the impeller direction of rotation. The results were compared to those obtained by Zwietering Chem. Eng. Sci. 8, 244–253, (1958) correlation. Agreement was found between results from present work and predictions by Zwietering's correlation with maximum difference not exceeding 17%.
Observations and analysis of electrokinetically driven particle trapping in planar microelectrode arrays
Authors: Tomkins Matthew R. , Wood Jeffery A. , Docoslis Aristides 
Published: July 2008

AbstractIn situ observations of submicron fluorescent tracers suspended in high ionic strength media sealed in a confined geometry are combined with 3‐D simulations in order to provide a better understanding of the synergism between dielectrophoresis and electrothermal flows that cause rapid particle transport and trapping on the surface of planar quadrupolar microelectrodes. The influence of electrode design on the microfluidic patterns and observed particle collection is examined by employing two different types of microelectrodes in the experiments. The potential use of quadrupolar microelectrodes as means for achieving accelerated sampling and signal amplification in future surface based biosensor devices is illustrated with an experiment involving stable capture of antigen‐coated polystyrene particles on the surface of an antibody‐functionalized microelectrode array.