bluuebunny/crossref_metadata_2025_split huggingface dataset:
Extensor Mechanism Ruptures and Reruptures: Perioperative Opioid Management
Authors: Khalil Lafi S. , Jildeh Toufic R. , Ussef Najib , Rahman Tahsin , Carter Erika , Pawloski Megan , Tandron Marissa , Moutzouros Vasilios 
Published: July 2020

AbstractThe purpose of this study was to determine (1) the correlation between preoperative and postoperative opioid use and (2) risk factors associated with rerupture in patients undergoing open extensor mechanism repair. A retrospective review of patients who underwent operative repair of quadriceps or patellar tendon rupture was performed. Patients were classified as opioid nonusers if they had not received any opioid medications in the 3 months before surgery, or as acute users or chronic users if they received at least one opioid prescription within 1 month or 3 months preceding surgery. Clinical records were reviewed for postoperative opioid use within a year after surgery as well as rerupture rates. A total of 144 quadriceps tendon and 15 patellar tendon repairs were performed at a mean age of 56.8 ± 15.1 years and body mass index of 33.2 ± 7.1. The overall rerupture rate was 6%. Diabetes was a significant risk factor for rerupture (56 vs. 19%, p = 0.023). Chronic preoperative opioid users were more likely to continue to use opioids beyond 1 month postoperatively (p < 0.001) as compared with acute or nonopioid users. Chronic preoperative opioid users (relative risk [RR]: 3.53, 95% confidence interval [CI]: 2.11–5.90) and patients with longer anesthesia time (RR: 1.39, 95% CI: 1.00–1.93) required more monthly opioid refills, whereas tourniquet use required fewer opioid refills each month (RR: 0.57, 95% CI: 0.37–0.88). Compared with patients without a rerupture, each additional prescription refill after the initial repair in the rerupture group was associated with a 22% higher risk of tendon rerupture (RR: 1.22, 95% CI: 1.07–1.39). The chronicity of preoperative opioid intake was found to have a significant effect on postoperative opioid use. This study suggests that there is a higher prevalence of rerupture in patients with prolonged opioid use postoperatively and among diabetics.
Foreign accent, comprehensibility and intelligibility, redux
Authors: Munro Murray J. , Derwing Tracey M. 
Published: July 2020

Abstract
We revisit Munro and Derwing (1995a), providing retrospective
commentary on our original methods and findings. Using what are now well-established assessment techniques, the study examined the
interrelationships among accentedness, comprehensibility, and intelligibility in the speech of second-language learners. The key
finding was that the dimensions at issue are related, but partially independent. Of particular note was our observation that
speech can be heavily accented but highly intelligible. To provide a fresh perspective on the original data we report a few new
analyses, including more up-to-date statistical modeling. Throughout the original text we intersperse insights we have gained over
the past 25 years. We conclude with retrospective interpretations, including thoughts on the relevance of the study to
contemporary second language teaching and especially pronunciation instruction.
Ultra-low permittivity porous silica-cellulose nanocomposite substrates for 6G telecommunication
Authors: Pálvölgyi Petra S , Nelo Mikko , Pitkänen Olli , Peräntie Jani , Liimatainen Henrikki , Myllymäki Sami , Jantunen Heli , Kordas Krisztian 
Published: July 2020

Abstract
The continuously increasing demand for faster data traffic of our telecommunication devices requires new and better materials and devices that operate at higher frequencies than today. In this work, a porous composite of silica nanoshells and cellulose nanofibers is demonstrated as a suitable candidate of dielectric substrates to be used in future 6G frequency bands. The hollow nanospheres of amorphous SiO2 with outstanding electromagnetic properties were obtained by a template-assisted Stöber process, in which a thin shell of silica is grown on polystyrene nanospheres first, and then the polymer core is burned off in a subsequent step. To be able to produce substrates with sufficient mechanical integrity, the nanoshells of SiO2 were reinforced with cellulose nanofibers resulting in a porous composite of very low mass density (0.19 ± 0.02 g cm−3), which is easy to press and mold to form films or slabs. The low relative dielectric permittivity (ε
r = 1.19 ± 0.01 at 300 GHz and ε
r = 1.17 ± 0.01 at 2.0 THz) and corresponding loss tangent (tan δ= 0.011 ± 0.001 at 300 GHz and tan δ = 0.011 ± 0.001 at 2.0 THz) of the composite films are exploited in substrates for radio frequency filter structures designed for 300 GHz operation.
Nanosecond pulsed discharges in distilled water: I. Continuum radiation and plasma ignition
Authors: Grosse K , Schulz-von der Gathen V , von Keudell A 
Published: July 2020

Abstract
Nanosecond plasmas in liquids are an important method to trigger the water chemistry for electrolysis or for biomedical applications in plasma medicine. The understanding of these chemical processes relies on knowing the variation of the temperatures in these dynamic plasmas. This is analyzed by monitoring nanosecond pulsed plasmas that are generated by high voltages at 20 kV and pulse lengths of 15 ns applied to a tungsten tip with 50 μm diameter immersed in water. Plasma emission is analyzed by optical emission spectroscopy ranging from UV wavelengths of 250 nm to visible wavelengths of 850 nm at a high temporal resolution of 2 ns. The spectra are dominated by the black body continuum from the hot tungsten surface and line emissions from the hydrogen Balmer series. Typical temperatures from 6000 K up to 8000 K are reached for the tungsten surface corresponding to the boiling temperature of tungsten at varying tungsten vapor pressures. The analysis of the ignition process and the concurrent spectral features indicate that the plasma is initiated by field ionization of water molecules at the electrode surface. At the end of the pulse, field emission of electrons can occur. During the plasma pulse, it is postulated that the plasma contracts locally at the electrode surface forming a hot spot. This causes a characteristic contribution to the continuum emission at small wavelengths.
Polarization control of radiation and energy flow in dipole-coupled nanorings
Authors: Cremer J , Plankensteiner D , Moreno-Cardoner M , Ostermann L , Ritsch H 
Published: July 2020

Abstract
Collective optical excitations in dipole-coupled nanorings of sub-wavelength spaced quantum emitters exhibit extreme sub-radiance and field confinement facilitating an efficient and low-loss ring-to-ring energy transfer. We show that energy shifts, radiative lifetimes, and emission patterns of excitons and biexcitons in such rings can be tailored via the orientation of the individual dipoles. Tilting the polarization from perpendicular to tangential to the ring dramatically changes the lifetime of the symmetric exciton state from superradiance to subradiance with the radiated field acquiring orbital angular momentum. At a magic tilt angle all excitons are degenerate and the transport fidelity between two rings exhibits a minimum. Further simulations suggest that, for certain parameters, the decay decreases double-exponentially with the emitter’s density. Disorder in the rings’ structure can even enhance radiative lifetimes. The transport efficiency strongly depends on polarization and size, which we demonstrate by simulating a bio-inspired example of two rings with 9 and 16 dipoles as found in biological light harvesting complexes (LHC). The field distribution in the most superradiant state in a full LHC multi-ring structure shows tight sub-wavelength field confinement in the central ring, while long-lived subradiant states store energy in the outer rings.
Contact engineering for two-dimensional semiconductors
Authors: Zhang Peng , Zhang Yiwei , Wei Yi , Jiang Huaning , Wang Xingguo , Gong Yongji 
Published: July 2020

Abstract
Two-dimensional (2D) layered materials, including graphene, black phosphorus (BP) and transition metal dichalcogenide (TMD) such as molybdenum disulfide (MoS2), tungsten diselenide (WSe2), have attracted increasing attention for the application in electronic and optoelectronic devices. Contacts, which are the communication links between these 2D materials and external circuitry, have significant effects on the performance of electronic and optoelectronic devices. However, the performance of devices based on 2D semiconductors (SCs) is often limited by the contacts. Here, we provide a comprehensive overview of the basic physics and role of contacts in 2D SCs, elucidating Schottky barrier nature and Fermi level pinning effect at metal/2D SCs contact interface. The progress of contact engineering, including traditional metals contacts and metallic 2D materials contacts, for improving the performance of 2D SCs based devices is presented. Traditional metal contacts, named 3D top and edge contacts, are discussed briefly. Meanwhile, methods of building 2D materials contacts (2D top contact and 2D edge contact) are discussed in detail, such as chemical vapor deposition (CVD) growth of 2D metallic material contacts, phase engineered metallic phase contacts and intercalation induced metallic state contacts. Finally, the challenges and opportunities of contact engineering for 2D SCs are outlined.
Exploration Sustainable Base Material for Activated Carbon Production Using Agriculture Waste as Raw Materials: A Review
Authors: Muzarpar M S , Leman A M , Rahman K A , Shayfull Z , Irfan A R 
Published: July 2020

AbstractActivated carbon can be call as “material of the future” due to its versatility usage from medical aspect, water and air treatment and a very good adsorbent characteristic. Process involved in the production of activated carbon were carbonization of raw material and activation of the charcoal to be a carbonized material. Basically the activation can be either physical or chemical activation or a combination of it. This paper is to review the potential of agricultural waste and introduce the potential base material that can be utilized as raw material for activated carbon. The process and the material selected on agricultural waste is coconut shell, palm kernel shell and rubber seed shell. The downstream industry of agricultural waste could look into material for the product development in the near future.
Improving the Sonocatalytic Degradation of Caffeine by Organic Acids Treatment for Surface Modification of Ag/CeO2
Authors: Nur Fadzeelah A K , Abdullah A Z , Azha N A 
Published: July 2020

Abstract
In this work, the surface of Ag/CeO2 which was prepared using hydrothermal method was modified using three types of organic acid such as ascorbic acid, citric acid and oxalic acid as the post treatment of as-synthesized Ag/CeO2 catalyst. The modified catalyst was further characterized using energy dispersive X-ray (EDX) for its elemental composition and BET surface area. The sonocatalytic degradation of caffeine under ultrasonic irradiation was examined to investigate the effect of these organic acids on the modification of Ag/CeO2 catalyst. The result showed that ascorbic acid demonstrated the highest sonocatalytic degradation of caffeine compared to citric and oxalic acids. Meanwhile, the degradation of caffeine was improved from 72.8% to 78.9% for modified Ag/CeO2 catalyst using ascorbic acid as the surface modifier. Thus, this result indicates that this kind of organic acid might have potential to modify Ag/CeO2 catalyst surface and improve the sonocatalytic degradation of caffeine.
Effect of Sythesis Conditions of Cr-Ti Mixed Oxides on FAME and Catalyst Characteristics
Authors: Samin M.S. , Wan Zuraida , Yazid N. , Ali Bashah N.A. , Hassan H. , Nur Fadzeelah A.K. , Jamaludin S.K. , Sabrina Mohd Sukri Siti 
Published: July 2020

Abstract
Biodiesel or fatty acid methyl ester (FAME) is one of the best alternative renewable energy source and environmental friendly fuel to replace diesel. Cr-Ti mixed oxides catalysts were synthesized via sol-gel method for the transesterification of cooking palm oil (CPO) to produce FAME. The reactions were conducted in a batch reactor. The effects of calcination time and ethanol solvent volume were studied. The calcination time of the Cr-Ti mixed oxides between 1 h to 5 h and ethanol volume between 20 mL to 60 mL shows effect on the FAME density obtained in the reaction. It was also observed that calcination time affects the catalyst surface area, pore diameter and pore volume. The results shows that the Cr-Ti catalyst prepared at 2 h calcination time with 50 mL ethanol volume has the highest surface area, pore volume and pore diameter among the prepared catalysts and obtained FAME density of 841.5 kg/m3. The FAME density is within the value range of the biodiesel fuel property. Thus, Cr-Ti mixed oxides catalyst shows good potential as heterogenesous catalyst for transesterification of CPO to produce FAME.
Compressive Strength of Fly Ash Geopolymer Concrete by Varying Sodium Hydroxide Molarity and Aggregate to Binder Ratio
Authors: Aida Mohd Mortar Nurul , Kamarudin H. , Rafiza R. A. , Meor T.A.F , Rosnita M 
Published: July 2020

Abstract
The concentration of sodium hydroxide solution increased the reaction rate during geopolymerisation process and thus enhanced the development of early strength of concrete. While the percentage volume of aggregates played a vital role in the strength development due to the better durability then paste alone and also filling and packing ability. The aim of the study is to determine the optimum molarity of sodium hydroxide and aggregate to binder ratio of geopolymer concrete towards high strength performance concrete based on compressive strength. The variable samples investigated include the sodium hydroxide (NaOH) concentration and aggregate to binder ratio at room temperature curing; the ratio of alkali activator solution and solid to liquid ratio remained constant. This resulted the presents work on the development of fly ash based geopolymer concrete having increment on the rate of compressive strength development from 7 to 28 days was found between 61 MPa and 82 MPa, respectively.
Experimental Study on the Lateral Torsional Buckling Behaviour of the Triangular Web Profile Steel Section
Authors: De’nan Fatimah , Mat Yusof Hassyima , Kaur Amarpreet 
Published: July 2020

Abstract
A triangular web profile (TriWP) section is a structural steel section that is made of two flanges connected to a web plate of triangular profile. Only certain research works have been carried out to study the characteristic, behaviour and the advantages offered by this section compared to the normal flat web (I-beam). An area that is not given full attention is the capability of this section to resist the lateral torsional buckling moment capacity compared to that of the normal flat web. The objectives of this thesis are to study the lateral torsional buckling behaviour of Triangular Web Profile (TriWP) steel section and compare to that of the flat web by experimental and to find the value of Mb, moment buckling resistance for TriWP. The scope of study covered the experimental work and theoretical investigation of triangular web profile steel section subjected to lateral torsional buckling moment resistance. The effect of the shape of the triangular web profile beam compared to that of the flat web beam was also be studied. For the buckling moment resistance, several factors were taken into account such as buckling parameter, torsional index, warping constant and torsional constant. All these factors are related to the second moment of area with respect to minor axis. The lateral torsional buckling test includes 8 specimens (4 flat webs and 4 TriWP). Each specimen was tested in two different sizes which is 200x100x6x3 and 180x75x5x3. Findings from the lateral torsional buckling tests were compared to the manual calculation using BS 5950: Part 1:2000. The lateral torsional buckling test shows that the moment buckling resistance of the triangular web profile steel beam section is better than that of the flat web in smaller size while in bigger size flat web beam has better moment resistance than that of triangular web profile steel beam. The section properties such as width (B), depth (D), thickness of flange (tf) and thickness of web (tw) affect the buckling moment resistance, Mb of the steel section
Critical Saturation Function Based Sliding Mode Control for Path Tracking of Mobile Robot
Authors: Ning Hong-Bin , Deng Xiao-Fei , Zhu Jun-Wei , Zhou Kai-Qing 
Published: July 2020

Abstract
This paper proposes a new sliding mode controller, as to enhance the performance of path tracking of three-wheeled mobile robot system. To begin with, backstepping design is used to construct a new sliding mode control law for better dynamic response and robustness. Next, in order to reduce chattering, the symbolic function is replaced with the critical saturation function in the conventional reaching law. At last, the simulation results show that backstepping design combined with saturation function can not only improve the response rate and robustness of the system, but also effectively reduce the chattering.
Predictive Modelling for Hospital Readmission Risk in the Philippines
Authors: Landicho J , Esichaikul V , Sasil R 
Published: July 2020

Abstract
Predictive models have been developed over the years to identify patients at risk of readmission. The goal of this study is to identify the risk factors associated to a patient’s readmission within one year in the cohort study including acute myocardial infarction (AMI), Heart Failure (HF), Chronic Obstructive Pulmonary Disease (COPD) and Pneumonia (PN) in a reputed Philippine hospital. Four predictive models were used and evaluated using performance metrics. The study found Logistic Regression as the most performing model in most of the cohort studies. There are 6 to 8 variables significantly associated with the readmission of high-risk patients.
Divide Large Scale Fuzzy Petri Net into Equivalent Sub-FPNs using Reachability Tree
Authors: Liu Bi-Yu , Zhou Kai-Qing , Zarith Rahmah Syed Ahmad Sharifah 
Published: July 2020

Abstract
As real systems become larger and complicated, the number of nodes of fuzzy Petri net (FPN) also increases rapidly, it further indicated that the algorithm complexity of related application using FPN grows up sharply. To solve this state-explosion issue, a decomposition algorithm using reachability tree is proposed to divide a large-scale FPN model into a series of sub-FPNs in this paper. Comparison experiments show that all obtained sub-FPNs do not destroy internal reasoning paths of the original large-scale FPN and represent a complete reasoning path from input place(s) to the output place.
An Improved Harmony Search Algorithm with Segmented Search
Authors: Kang Di-Wen , Mo Li-Ping , Zhou Kai-Qing 
Published: July 2020

Abstract
Harmony search (HS) algorithm has received widely attention in various fields because of simple operation and outstanding performance. However, there exists some bottlenecks which hinders the further development of HS algorithm, such as easy trapping into local optimum and slow convergence velocity.This paper proposes an improvement HS algorithm by using segmented search strategy (SHS) to overcome these drawbacks. Comparative experiments reveal the proposed SHS algorithm has perfect performance, especially in high dimensions.
Application of Particle Filter in Video Moving Target Tracking
Authors: Biao-Li  , Deng Xiao-Fei , Fang-Chen  , Rui-Yan  , Zhao Si-Qi , Zhou Kai-Qing 
Published: July 2020

Abstract
Aiming at solving the problem of large tracking error in the tracking process of video moving targets with the unscented Kalman filtering method, a particle filter algorithm is proposed to track video moving targets to improve the tracking effect. Particle filtering is the minimum variance estimation of the system state through the posterior probability distribution. The applications of particle filtering and unscented Kalman filtering in tracking video moving target are compared by using Matlab simulation software. The results show that the particle filter has higher accuracy and better tracking performance than the unscented Kalman filter in tracking video moving target.
IoT-based Production Output Monitoring System for Plastic Packaging Manufacturing Process
Authors: Yun Yee Wong , Chang Choon Chew , Chee Siong Teo , Ambar Radzi , Helmy Abd Wahab Mohd 
Published: July 2020

Abstract
This paper discusses about the development of an IoT-based production output monitoring system in the production line of Chiga Light Industries Sdn. Bhd. which is a plastic packaging manufacturing company. Although the existing company Enterprise Resource Planning (ERP) system provides a platform for production manager and officers to monitor as well as collect the length of plastic film produced on a printing machine, only the total amount of finished goods in kilograms (kg) is recorded. However, the total length of plastic produced, and time taken to finish one tubing are needed for machine analysis and production planning. Therefore, a length encoder is used to detect the length of plastic film produced and connected to a counter meter to display the present value of plastic produced as well as the setting value for one roll of plastic. Besides, an Arduino board is used to read data from the counter meter while an ESP8266-01 Wi-Fi module is used to send the data to ThingSpeakTM cloud for storing. ThingSpeakTM analysed and visualised the collected present and setting values of the counter meter on a private channel. The duration for uploading a data is set to one hour. From the developed monitoring system, production manager and officers could monitor machine performance, operators working performance and collect the length of plastic produced on a printing machine. Besides, the total length of plastic in a roll could also be detected to ensure customer requirement is achieved.
IOT Real-Time People Counting Using Raspberry PI (IOT-RepCO)
Authors: Mat Din M , Nordin N N , Md Siraj M , Kadir R. 
Published: July 2020

Abstract
IOT - RepCO is a People Counting System that allows tracking and verification activities to be systematically carried out. This web-based system ensures that the accuracy and reliability of the information sent by the service provider company by changing the manual way to the online system. In addition, this system also allows information to be stored in digital form which indirectly creates a “paperless” environment. Security features are also enhanced by using IOT - RepCO. Python and OpenCV languages are used in the development of this system. While “ubidots” are used for data storage in “cloud”. The requirement for this solution were carried out in Datasonic Corporation Sdn. Bhd. whereby it also provides a testing ground and verification of the system. The diversity of users in this system requires user-friendly interface design as well as minimal navigation and low fidelity concept as an appeal for all users who will use the IOT -RepCO system. It is hoped that the construction of the IOT - RepCO system will assist the companies as well as other parties such as fire department during the emergency evacuation such that it indirectly improve the quality of service to the customers as well as providing an important information during evacuation process.