bluuebunny/crossref_metadata_2025_split huggingface dataset:
Total Knee Arthroplasty among Medicare Beneficiaries with Hemophilia A and B Is Associated with Increased Complications and Higher Costs
Authors: Rosas Samuel , Buller Leonard T. , Plate Johannes , Higuera Carlos , Barsoum Wael K. , Emory Cynthia 
Published: September 2019

AbstractOperations on patients with hemophilia A and B are complex. Studies evaluating postoperative outcomes and costs following total knee arthroplasty (TKA) in patients with hemophilia are limited. A retrospective review of the entire Medicare dataset from 2005 to 2014 was performed. International Classification of Disease 9th revision codes were used to identify patients with hemophilia A and B and they were matched to controls using a 1:1 random matching process based on age, gender, Charlson Comorbidity Index (CCI), and select comorbidity burden. The 90-day preoperative period was evaluated for comorbidities and the 90-day postoperative period was analyzed for outcomes and reimbursements. Logistic regression models were generated to compare outcomes between cases and controls. A total of 4,034 patients with hemophilia were identified as having undergone TKA. About 44.8% were between the ages of 65 and 74 and 62.4% were female. Although the CCI was identical in both cohorts, individual comorbidities not controlled for varied significantly. Medical complications were more frequent among the patients with hemophilia: postoperative bleeding (odds ratio [OR]: 1.7; 95% confidence interval [CI]: 1.2–2.3), deep venous thrombosis (OR: 2.3; 95% CI: 1.8–2.8), pulmonary embolism (OR: 2.9; 95% CI: 2.1–3.9), and blood transfusions (OR: 1.8; 95% CI: 1.6–1.9). Hemophilia was associated with higher odds of periprosthetic infection (1.78 vs. 0.98%, OR: 1.8 95% CI: 1.2–2.7). The 90-day reimbursements were higher for patients with hemophilia (mean: $22,249 vs. $13,017, p < 0.001). Medicare beneficiaries with a diagnosis of hemophilia experience more frequent postoperative complications and incur greater 90-day costs than matched controls following TKA. Surgeons should consider this when optimizing patients for TKA and payors should consider this for risk-adjusting payment models.
Amputations versus Salvage: Reconciling the Differences
Authors: Black Cara K. , Ormiston Laurel D. , Fan Kenneth L. , Kotha Vikas S. , Attinger Christopher , Evans Karen Kim 
Published: September 2019

Abstract
Background There are many factors to consider when choosing between amputations versus salvage in lower extremity reconstructive surgery. Postoperative functionality and survival benefit are critical factors when deciding between limb salvage and amputation.
Methods In this review, we present the evidence and the risks and benefits between these two options in the setting of the acute, trauma population and the chronic, diabetes population.
Results The trauma population is on average young without significant comorbidities and with robust vasculature and core strength for recovery. Therefore, these patients can often recover significant function with anamputation and prosthesis. Amputation can therefore be the more desirable in this patient population, especially in the case of complete traumatic disruption, unstable patients, high risk of extensive infection, and significant nerve injury. However, traumatic lower extremity reconstruction is also a viable option, especially in the case of young patients and those with intact plantar sensation and sufficient available tissue coverage. The diabetic population with lower extremity insult has on average a higher comorbidity profile and often lower core strength. These patients therefore often benefit most from reconstruction to preserve limb length and improve survival. However, amputation may be favored for diabetics that have no blood flow to the lower extremity, recalcitrant infection, high-risk comorbidities that preclude multiple operations, and those with end stage renal disease.
Conclusion Many patient-specific factors should be considered when deciding between amputation vs. salvage in the lower extremity reconstruction population.
Glucose-conjugated chicken myofibrillar proteins derived from random-centroid optimization present potent hydroxyl radical scavenging activity
Authors: Nishimura Kimio , Suzuki Momoka , Saeki Hiroki 
Published: September 2019

ABSTRACT
The optimal conditions for the preparation of glucose-conjugated chicken myofibrillar proteins (Mfs) via the Maillard reaction, presenting strong antioxidant activity against hydroxyl radicals (･OH) and high solubility in low ionic strength medium, were sought using random-centroid optimization (RCO). Four parameters of temperature, relative humidity (RH), reaction time, and glucose-to-Mfs mixing ratio, were examined, resulting in a total of 24 vertices. Evaluations were carried out relatively to each individual vertex, and the optimal preparatory conditions to obtain the highest antioxidant activity were determined as follows: temperature of 52 °C, RH of 38%, reaction time of 6.79 h, and a glucose to Mfs mixing ratio of 11.7 (w/w). The resulting glucose-conjugated chicken Mfs gained thermal gel-forming ability and its ･OH averting capacity reached 9.7 ± 0.7 μmol of gallic acid equivalent/g of protein.
Abbreviations: GA: gallic acid; HORAC: hydroxyl radical averting capacity; IC50: half-maximal inhibitory concentration; 2-ME, 2-mercaptoethanol; Mfs: myofibrillar proteins; MHC: myosin heavy chain; ･OH: hydroxyl radical; PAGE: polyacrylamide gel electrophoresis; RCO: random-centroid optimization; RH: relative humidity; RLU: relative light units; SDS: sodium dodecyl sulfate; SEM: scanning electron microscope; SS: disulfide
Modelling hierarchical flocking
Authors: Jia Yongnan , Vicsek Tamas 
Published: September 2019

Abstract
We present a general framework for modeling a wide selection of flocking scenarios under free boundary conditions. Several variants have been considered—including examples for the widely observed behavior of hierarchically interacting units. The models we have simulated correspond to classes of various realistic situations. Our primary goal was to investigate the stability of a flock in the presence of noise. Some of our findings are counter-intuitive in the first approximation, e.g. if the hierarchy is based purely on dominance (an uneven contribution of the neighbors to the decision about the direction of flight of a given individual) the flock is more prone to loose coherence due to perturbations even when a comparison with the standard egalitarian flock is made. Thus, we concentrated on building models based on leader-follower relationships. And, indeed, our findings support the concept that hierarchical organization can be very efficient in important practical cases, especially if the leader-follower interactions (corresponding to an underlying directed network of interactions) have several levels. Efficiency here is associated with remaining stable (coherent and cohesive) even in cases when collective motion is destroyed by random perturbations. The framework we present allows allows the study of several further complex interactions among the members of flocking agents.
Major scientific accomplishments of Prof. Kun Huang
Authors: Xia Jianbai 
Published: September 2019

Abstract
The 100th anniversary of the birth of Prof. Kun Huang is in this year. Prof. Huang is a paragon of the older generation of Chinese scientists. He had made great achievements in solid state physics. After the founding of the People’s Republic of China, he returned to China immediately, and devoted himself to education. He and Prof. Xide Xie initiated the research of semiconductors in China, and established the solid state physics major at Peking University, which has trained a large number of talents for China. In 1977, he became the director of the Institute of Semiconductors of the Chinese Academy of Sciences. Led by Prof. Huang, together with Prof. Shouwu Wang, Prof. Lanying Lin and Prof. Shoujue Wang, the semiconductor institute independently overcomes many difficulties and created a group of critical devices which were on international embargo but urgently needed by China. Furthermore, he also made new contributions in the field of semiconductor superlattices. Under his leadership, the State Key Laboratory of Semiconductor Superlattices became one of the internationally leading laboratories. The following are the major scientific contributions of Prof. Kun Huang.
Lattice vibration and Raman scattering of two-dimensional van der Waals heterostructure
Authors: Cong Xin , Lin Miaoling , Tan Ping-Heng 
Published: September 2019

Abstract
Research on two-dimensional (2D) materials and related van der Waals heterostructures (vdWHs) is intense and remains one of the leading topics in condensed matter physics. Lattice vibrations or phonons of a vdWH provide rich information, such as lattice structure, phonon dispersion, electronic band structure and electron–phonon coupling. Here, we provide a mini review on the lattice vibrations in vdWHs probed by Raman spectroscopy. First, we introduced different kinds of vdWHs, including their structures, properties and potential applications. Second, we discussed interlayer and intralayer phonon in twist multilayer graphene and MoS2. The frequencies of interlayer and intralayer modes can be reproduced by linear chain model (LCM) and phonon folding induced by periodical moiré potentials, respectively. Then, we extended LCM to vdWHs formed by distinct 2D materials, such as MoS2/graphene and hBN/WS2 heterostructures. We further demonstrated how to calculate Raman intensity of interlayer modes in vdWHs by interlayer polarizability model.
Applications of Huang–Rhys theory in semiconductor optical spectroscopy
Authors: Zhang Yong 
Published: September 2019

Abstract
A brief review of Huang–Rhys theory and Albrechtos theory is provided, and their connection and applications are discussed. The former is a first order perturbative theory on optical transitions intended for applications such as absorption and emission involving localized defect or impurity centers, emphasizing lattice relaxation or mixing of vibrational states due to electron–phonon coupling. The coupling strength is described by the Huang–Rhys factor. The latter theory is a second order perturbative theory on optical transitions intended for Raman scattering, and can in-principle include electron–phonon coupling in both electronic states and vibrational states. These two theories can potentially be connected through the common effect of lattice relaxation – non-orthonormal vibrational states associated with different electronic states. Because of this perceived connection, the latter theory is often used to explain resonant Raman scattering of LO phonons in bulk semiconductors and further used to describe the size dependence of electron–phonon coupling or Huang–Rhys factor in semiconductor nanostructures. Specifically, the A term in Albrechtos theory is often invoked to describe the multi-LO-phonon resonant Raman peaks in both bulk and nanostructured semiconductors in the literature, due to the misconception that a free-exciton could have a strong lattice relaxation. Without lattice relaxation, the A term will give rise to Rayleigh or elastic scattering. Lattice relaxation is only significant for highly localized defect or impurity states, and should be practically zero for either single particle states or free exciton states in a bulk semiconductor or for confined states in a semiconductor nanostructure that is not extremely small.
Broadband polarized photodetector based on p-BP/n-ReS2 heterojunction
Authors: Zhu Wenkai , Wei Xia , Yan Faguang , Lv Quanshan , Hu Ce , Wang Kaiyou 
Published: September 2019

Abstract
Two-dimensional (2D) atomic crystals, such as graphene, black phosphorus (BP) and transition metal dichalcogenides (TMDCs) are attractive for use in optoelectronic devices, due to their unique crystal structures and optical absorption properties. In this study, we fabricated BP/ReS2 van der Waals (vdWs) heterojunction devices. The devices realized broadband photoresponse from visible to near infrared (NIR) (400–1800 nm) with stable and repeatable photoswitch characteristics, and the photoresponsivity reached 1.8 mA/W at 1550 nm. In addition, the polarization sensitive detection in the visible to NIR spectrum (532–1750 nm) was demonstrated, and the photodetector showed a highly polarization sensitive photocurrent with an anisotropy ratio as high as 6.44 at 1064 nm. Our study shows that van der Waals heterojunction is an effective way to realize the broadband polarization sensitive photodetection, which is of great significance to the realization and application of multi-functional devices based on 2D vdWs heterostructures.
Students’ Intuition Characteristics in Solve Mathematical Problem In Stage Planning
Authors: Arwanto  , Ketut Budayasa I , Teguh Budiarto Mega 
Published: September 2019

Abstract
This research is descriptive explorative with a qualitative approach, aims to know the characteristics of student intuition in making the mathematical problem-solving plan. Data collection methods triangulate data through tests,/and documentation. The subject of the research is a mathematics education student of the Muhammadiyah University of Cirebon. The population of the subjects was fifty students and then selected who had the initial ability of mathematics was twenty five students, after that selected one female student whose TPMM and IPK is medium and has good mathematical delivery. The results of this study indicate that the intuition of students in solving mathematical problems at the stage of understanding Polya problem: First, Subjec using intuition is self-evident intuition, that is, statement, representation, or interpretation is considered the subject right by itself, the subject feels no need to show/prove formally the truth of such statements, representations, or interpretations. Second, Subjects use certainty’s intrinsic intuition, ie the subject assumes a statement, its representation, or its interpretation, a certainty, no external support (formal or empirical to obtain it). Third, the subject uses intuition perseverance, ie the interpretation and the resulting representation of the subject tend to be difficult to change. It is proved by the tendency to not use something new beyond its mathematical comprehension. Fourth, Subject use extrapolative ness intuition, ie, subject to certain interpretations, decisions or conclusions based on insufficient information or data. It is proved that the subject is not intact in making problem-solving plans based on the Polya stage.
Estimation Claims Reserving Based on Archimedean Copula
Authors: Noviyanti Lienda , Hasna Afifah R , Zanbar Soleh A. , Chadidjah Anna 
Published: September 2019

Abstract
The problem of how to estimate appropriate incurred but not reported (IBNR) claims reserving has always been among critical problem in general insurance. Estimating of claims reserving is required to increase the optimal service for policyholders. This value should always be available during the period of payment of claims. Its imprecision estimates could destabilize the insurance company. In general, the process of settlement a claim always appear time-lag among claims occurrence, claims reporting and claims payment. Different time-lags formed into the matrix of the Run-off Triangle. Practitioners still perform the chain-ladder method, one of the oldest actuarial literature. This condition is not realistic because the two investigated variables are claim size and time from the moment when claim occurred to the moment when the payment has been reported are correlated. The aim of this study is therefore to use the Archimedean Copula to estimate outstanding IBNR claims reserving. This method gives the estimated value of which is more suitable for fire insurance than the chain-ladder method classics.
On the strong metric dimension of crossed prism graph and edge corona of cycle with path graph
Authors: Yunitasari Astri , Atmojo Kusmayadi Tri 
Published: September 2019

Abstract
Let G be a connected graph with vertex set V(G) and edge set E(G). The interval I[u, v] between u and v is defined as the collection of all vertices that belong to some shortest u − v path. A vertex s ∈ V(G) strongly resolves two vertices u and v if u belongs to a shortest v −s path, denoted by u ∈ I[v, s], or v belongs to a shortest u−s path, denoted by v ∈ I[u, s]. A set S ∈ V(G) is a strong resolving set if every two distinct vertices of G are strongly resolved by some vertex of S. The strong metric basis of G is a strong resolving set with minimal cardinality. The strong metric dimension of G, denoted by sdim(G), is defined as the cardinality of the strong metric basis. In this research, we determine the strong metric dimension of crossed prism graph and edge corona graph Cm
◊ Pn
. We obtain the strong metric dimension of crossed prism graph with n ≥ 4 is n for n even. The strong metric dimension of edge corona graph Cm
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Student’s Difficulties in Solving Higher Order Thinking Skills (HOTS) Problem for Mathematics Based on Verbalizer Cognitive Style
Authors: Rahmawatiningrum A , Kusmayadi T A , Fitriana L 
Published: September 2019

Abstract
Higher Order Thinking Skills (HOTS) problem for mathematics is mathematics problems related to real life and contain elements of analysis, evaluation and creation. This distinction raises the characteristic of thinking in every student called the cognitive style. The aims of this research is to describe student’s difficulties in solving HOTS problem based on verbalizer cognitive style. This research used the qualitative descriptive method, research subjects are 2 students of VII grade Surakarta with verbalizer cognitive style which selected using purposive sampling. Based on the findings, students with a cognitive style verbalizer begin to have difficulty in solving HOTS mathematics problems at the stage of defining goals by expressing problems in a diagram, where diagrams can help solving the problems.
Enhancing the Student’s Reasoning Ability in Solving Real Number System Problems Using the Concept Map
Authors: Khotimah R P , Masduki  , Sungkono J 
Published: September 2019

Abstract
The reasoning is an important aspect of learning mathematics. In studying real analysis, students must have the reasoning ability to understand the concepts and the relation of each other. The aim of this research is to examine the effect of using a concept map for learning on the student reasoning ability in solving a real number system problem. The reasoning can be seen from the indicators: analysis, synthesis, verification, and generalization. This research is quantitative research with pre-test post-test group design. The subject of this research is eighteen students who enrolled in a real analysis course in the Department of Mathematics Education, Universitas Widya Dharma Klaten academic year 2017/2018. The data was collected by test and documentation. The reasoning test was given twice, first is the pre-test that was given before the implementation of the concept map model in the learning process, and the second is post-test that given after the implementation of the model. The data were analyzed by descriptive statistics. The results showed that there was an enhancement of student reasoning ability in solving real number system problems by using a concept map
Classification of Javanese Language Level on Articles Using Multinomial Naive Bayes and N-Gram Methods
Authors: Ardhana A P , Cahyani D E , Winarno  
Published: September 2019

Abstract
Javanese language articles can now be found in electronic media. But for people who are just learning the Javanese language, they have difficulty in knowing the language level that is contained in the article because there is no explanation regarding the type of language level. For this reason, it is necessary to classify the language level in Javanese language based on the article, where the Javanese language is divided into 4 levels, namely ngoko, ngoko alus, krama madya, and krama alus. Before beginning the classification process, the data must be preprocessed. One of the steps in preprocessing method is stemming, which is used to convert the affixes in words into basic words. The Javanese stemming process in this research refers to the Indonesian stemming rules based on the adjusted Nazief-Adriani algorithm. The extraction feature process was carried out using N-Gram with n = 2, 3, 4 (bigram, trigram, and quadgram). After finishing the preprocessing method, the classification process then was executed using Multinomial Naïve Bayes method. In the classification process, there often exist problems related to imbalance data between categories. To overcome this problem, SMOTE resampling method is utilized to balance the data. The classification with N-Gram variations accompanied by SMOTE and using stemming results to maximum accuracy of 67.01% at n = 2, then for the highest precision was at N-Gram n = 4 with condition not using stemming but using SMOTE at value 72.67%. The highest recall value was obtained in two conditions, namely at N-Gram n = 2 either using or not using SMOTE and use stemming, which is 67.00%. From the results of this study, it can be concluded that stemming rules which are adapted from Nazief-Adriani algorithm with the addition of stemming steps and affix list from Javanese language expert can be implemented properly for Javanese language stemming process. And the classification of the Javanese Language level using Multinomial Naïve Bayes and N-Gram methods can result in good enough accuracy, precision, and recall.
Lost times of harvesting processes of the Thai combine harvesters
Authors: Doungpueng K , Chuan-Udom S , Numsong A , Chansrakoo W 
Published: September 2019

Abstract
The loss of time during harvesting processes can affect the effective field capacity. This study aimed to observe and analyse the time that is lost during harvesting processes utilizing Thai combine harvesters. The random data was collected in November 2017 from 28 Thai combine harvesters harvesting Khao Dowk Mali 105 and in May 2017 from 27 Thai combine harvesters harvesting Phitsanulok-2. The theoretical field time, the headland turning time, the un-harvest moving and unloading time, the adjustment and maintenance time, and the bund crossing time were all recorded. The results indicated that the headland turning time and the un-harvest moving and unloading time had been the major influences that had been responsible for the increases in total time and had resulted in decreases in the effective field capacity. The times for adjustment and maintenance and for bund crossing had shown only minor losses.