bluuebunny/crossref_metadata_2025_split huggingface dataset:
Anatomical Predictors of Transcranial Surgical Access to the Suprasellar Space
Authors: Straus David , Eddelman Daniel B. , Byrne Nika , Tchalukov Konstantin , Wewel Josh , Munich Stephan A. , Kocak Mehmet , Byrne Richard 
Published: November 2019

AbstractObjective The suprasellar space is a common location for intracranial lesions. The position of the optic chiasm (prefixed vs. postfixed) results in variable sizes of operative corridors and is thus important to identify when choosing a surgical approach to this region. In this study, we aim to identify relationships between suprasellar anatomy and external cranial metrics to guide in preoperative planning.Methods T2-weighted magnetic resonance images (MRIs) from 50 patients (25 males and 25 females) were analyzed. Various intracranial and extracranial metrics were measured. Statistical analysis was performed to determine any associations between metrics.Results Interoptic space (IOS) size correlated with interpupillary distance (IPD; a = 7.3, 95% confidence interval [CI] = 4.5–10.0, R 2 = 0.3708, p = 0.0009). IOS size also correlated with fixation of the optic chiasm, for prefixed chiasms (n = 7), the mean IOS is 205.14 mm2, for normal chiasm position (n = 33) the mean IOS is 216.94 mm2 and for postfixed chiasms (n = 10) the mean IOS is 236.20 mm2 (p = 0.002). IPD correlates with optic nerve distance (OND; p = 0.1534). Cranial index does not predict OND, IPD, or IOS.Conclusion This study provides insight into relationships between intracranial structures and extracranial metrics. This is the first study to describe a statistically significant correlation between IPD and IOS. Surgical approach can be guided in part by the size of the IOS and its correlates. Particularly small intraoptic space may guide the surgeon away from a subfrontal approach.
Homesickness, recollections and reunions
Authors: Moreton Emma , Culy Chris 
Published: November 2019

This study uses corpus and computational methods to explore topics and emotions in a collection of nineteenth-century migrant
correspondence. Specifically, it examines letters by two sisters, Annie and Julia Lough, who migrated from Ireland to America in the late
1870s and early 1880s. First, a close reading of the letters is carried out to identify topics and emotions in the discourse. Then, three
topics are examined in detail (“Homesickness and Separation”, “Recollection” and “Reunion”), using the Interesting Items Visualisation
Tool (IIVT) and Sketch Engine to identify local grammars – words, phrases and structures that are statistically
more likely to occur in one topic over another. Our findings show that certain linguistic patterns emerge. For example, in the topic
“Homesickness and Separation”, the material verbs CROSS, COME and GO are used when writing about the physicality of separation, while the
mental verbs SEEM, LOOK, SEE and WISH are used when writing about psychological aspects of homesickness. Additionally, verbs to do with
remembering, forgetting and dreaming (or not dreaming) are statistically significant in the topic “Recollection”. Although working with a very
small dataset, our findings demonstrate how this type of analysis might complement more qualitative methods, providing insight into what
female migrants wrote about and how, through language, they maintained relationships with family back home.
Extracellular vesicles containing oncogenic mutant β‐catenin activate Wnt signalling pathway in the recipient cells
Authors: Kalra Hina , Gangoda Lahiru , Fonseka Pamali , Chitti Sai V. , Liem Michael , Keerthikumar Shivakumar , Samuel Monisha , Boukouris Stephanie , Al Saffar Haidar , Collins Christine , Adda Christopher G. , Ang Ching‐Seng , Mathivanan Suresh 
Published: November 2019

ABSTRACTMutations in β‐catenin, especially at the residues critical for its degradation, render it constitutively active. Here, we show that mutant β‐catenin can be transported via extracellular vesicles (EVs) and activate Wnt signalling pathway in the recipient cells. An integrative proteogenomic analysis identified the presence of mutated β‐catenin in EVs secreted by colorectal cancer (CRC) cells. Follow‐up experiments established that EVs released from LIM1215 CRC cells stimulated Wnt signalling pathway in the recipient cells with wild‐type β‐catenin. SILAC‐based quantitative proteomics analysis confirmed the transfer of mutant β‐catenin to the nucleus of the recipient cells. In vivo tracking of DiR‐labelled EVs in mouse implanted with RKO CRC cells revealed its bio‐distribution, confirmed the activation of Wnt signalling pathway in tumour cells and increased the tumour burden. Overall, for the first time, this study reveals that EVs can transfer mutant β‐catenin to the recipient cells and promote cancer progression.
A conjugate-gradient-type rational Krylov subspace method for ill-posed problems
Authors: Grimm Volker 
Published: November 2019

Abstract
Conjugated gradients on the normal equation (CGNE) is a popular method to regularise linear inverse problems. The idea of the method can be summarised as minimising the residuum over a suitable Krylov subspace. It is shown that using the same idea for the shift-and-invert rational Krylov subspace yields an order-optimal regularisation scheme.
Interplay between myosin II and actin dynamics in chemotactic amoeba
Authors: Hsu H F , Krekhov A , Tarantola M , Beta C , Bodenschatz E 
Published: November 2019

Abstract
The actin cytoskeleton and its response to external chemical stimuli is fundamental to the mechano-biology of eukaryotic cells and their functions. One of the key players that governs the dynamics of the actin network is the motor protein myosin II. Based on a phase space embedding we have identified from experiments three phases in the cytoskeletal dynamics of starved Dictyostelium discoideum in response to a precisely controlled chemotactic stimulation. In the first two phases the dynamics of actin and myosin II in the cortex is uncoupled, while in the third phase the time scale for the recovery of cortical actin is determined by the myosin II dynamics. We report a theoretical model that captures the experimental observations quantitatively. The model predicts an increase in the optimal response time of actin with decreasing myosin II-actin coupling strength highlighting the role of myosin II in the robust control of cell contraction.
Spontaneous scalarization within Scalar-Tensor theory using new conformal function in quark stars
Authors: Fauzi M I , Ramadhan H S , Sulaksono A 
Published: November 2019

Abstract
General relativity had been succeeding to describe gravitational phenomenon in weak-field gravity but some deviation had been observed in compact objects such as neutron stars and quark stars. This phenomenon of spontaneous scalarization which shown for the first time by Damour and Espasito-Farese appears in one of the modified gravity theories i.e., scalar tensor theory of gravity. We will study such novel phenomenon in quark stars. Furthermore, different to that of previous study, here we introduce new conformal function. A(φ) = 1 − Ln[1 − 0.5β(φ − φ
0)2] We found that spontaneous scalarization using such conformal function appears for the first time when β ≈ −4.5. Furthermore, the scalarization effect depends on the equation of state (EoS) of the quark stars. The corresponding effect appears rather different when scalar Coulomb EoS or vector Coulomb EoS are used.
Stress analysis of electric bus chassis using finite element method
Authors: Widyanto S A , Kurdi O , Haryadi G D , Haryanto I , Rokhim M I 
Published: November 2019

Abstract
This paper discusses stress analysis of electric bus ladder chassis. The objective of this paper is to obtain an optimum design that has less weight but strong enough to receive load from passenger and body of bus. The chassis is subjected to load which are static, dynamic and cyclic loading. Therefore, the chassis should have good properties that can withstand to those types of load. During the travel, chassis are excited by road roughness, engine, transmission and more. Stress and displacement can be obtained by using finite element method. Simulation was carried out by using commercial finite element packages Abaqus in order to find stress distribution and displacement of chassis. The material used were AISI 4130 Alloy steel, AISI A514 GRADE B Alloy steel and Grey cast iron, with variations in thickness of 2 mm, 4 mm and 6 mm. The model with the AISI 4130 Alloy steel with 6 mm in thickness was chosen as the optimum model due to the lowest stress and displacement among all materials and thicknesses.
Student conception of Ohm’s law
Authors: Prastyaningrum I , Pratama H 
Published: November 2019

AbstractThe purpose of this study is to reveal students’ conceptions of Ohm law. This study uses a qualitative method. The sample used consisted of students who took courses related to current and electrical resistance. That is the second semester (11 students), four semesters (13 students) and four semesters (17 students) in the electrical engineering education program at the Universitas PGRI Madiun. Data is collected by giving essay and interview questions. From the results of the study, it can be concluded that students who have majored in electricity have not yet 100% understood the concept of Ohm’s law. The results of the analysis show that the wrong conception will arise because students do not understand the language of physics in relation to electro properly.
Formulation of winged bean seeds as pollen substitute for outgrowth of honey bees (Apis mellifera L)
Authors: Wijayati N , Hardjono D S , Rahmawati M , Kurniawati A 
Published: November 2019

Abstract
The availability of pollen in plants depends on the season. The rainy season becomes a limiting factor for honeybees to obtain a source of pollen because there are not many flowering plants this season. This causes the development of honey bee colonies to be inhibited, as pollen is the only source of protein for the naturally available bees that can affect the rate of reproduction and the life span of bees. The winged bean contains a high enough protein and amino acids that the bees require, so the winged beans can be used as artificial feed of pollen substitute. Winged bean seeds be processed into three types of processed, namely roasted winged bean seeds (TKS), boiled winged bean seeds (TKR), and fermented winged bean seeds (TKF). Winged bean seeds flour given to bees in pasta form. Based on the observations obtained the results that the consumption of the bee’s liked is roasted winged bean seeds, because it does not a bad odor. The smell is lost due to the roasting process. Protein content of fermented, boiled, and roasted of winged bean seeds was 6.46%; 7.36%; and 15.19%. While the fat content on fermented, boiled, and roasted of winged bean seeds were 8.35%; 8.31%; and 12.07%. This indicates that the most preferred type is roasted winged bean seeds with the highest protein and fat.
Implementation of project-based learning to the ability of scriptural literates on high school student IX grade
Authors: Sumarti S S , Rahmadi A , Sumarni W 
Published: November 2019

Abstract
This research uses an experimental method which is aimed to know the difference of science literacy ability toward science-based model based learning project on hydrolysis material and buffer solution. This research was conducted in SMA Negeri 2 Salatiga. Design The research used is Pretest-Posttest Control Group Design. The sample used is two classes chosen by cluster random sampling technique. Methods of data collection in the form of documentation, observation, and test methods. The project work done by the students in the making of shampoo from rice husk. The data obtained were then analyzed using the N gain and t-test. The result of gain normality test obtained average science literacy ability of post-test result increased 0,77 and 0,69 with the high category in experiment class and while in control class. In addition, t-test analysis showed that the tcount of 3,660 is greater than ttable 2,002 with 5% significance level which means there is a significant improvement difference between experiment class and control class. In addition, the determination coefficient test obtained the value of 0.6 with the category of the influence of Project Based Learning Model is strong. Based on the results of the analysis can be concluded that the application of Model-Based Learning on the ability of science literacy is more significant than the Conventional Model.
Mathematical model of avian influenza epidemics with burning infected poultry and noticing the success ratio of poultry vaccination
Authors: Kharis M , Amidi  , Agoestanto A 
Published: November 2019

Abstract
Epidemics have a major impact on human life both in the health and economic fields. One such epidemic is avian influenza. This epidemic causes the infected human to get hospitalization. Some action is needed to prevent the extension of this outbreak. Measures undertaken include vaccination in poultry, burning of infected poultry, and quarantine and treatment of infected humans. In this paper, we developed the mathematical model of AI with burning infected poultry and noticing the success ratio of poultry vaccination in a constant population.
The analysis of heuristics decision-making in abstract algebra proofing
Authors: Junarti  , Sukestiyarno Y L , Waluya S B , Rochmad  
Published: November 2019

Abstract
Heuristics decision-making is the path, the shortcut of the human mind in making an immediate decision on the process of problem-solving in abstract algebra proofing. Heuristics decision-making are classified into four components, i.e. representative, availability, adjustment and anchoring. This study combined a quantitative and qualitative approach. A test was done twice in order to measure the five stages of verification, and questionnaires were also used to measure heuristics decision and were analyzed descriptively. The results of this study were (1) the students having representative heuristics were able to write the verification well; those having availability heuristics were able to prove when they were given the similar example with the problem; those having adjustment heuristics were able to prove with the ideas and concepts that have been understood; and those having anchoring heuristics cannot control the mistakes made in symbols writing, key ideas, steps, conditions of proof, and reasons supporting theorem; and (2) from the interview, it was revealed that the proof can be done if there are similar examples and with the help of friends, the students did not have a fully learning independence, the students were less confidence in making heuristics decision.
On perturbation method of an oscillator single degree of freedom with mass that changes periodically and forced vibrations
Authors: Waluya S B , Rosyida I , Kharis M 
Published: November 2019

Abstract
In this paper will be studied an Oscillator with Mass that changes periodically and forced vibration of a simple degree of freedom. This system related to the dynamics of cables such as stayed bridges, electricity, telephone, and others. Under normal conditions for all type of cables one would not expect galloping type of vibrations due to wind-forces. There is an exception concerns vibrations excited by a wind-field containing raindrops. As has been observed on scale models in wind-tunnels the raindrops that hit the inclined stay cable generate one or more rivulets on the surface of the cable. It will be studied in this paper an oscillator single degree of freedom with mass that changes periodically and forced vibrations. Small masses which periodically hitting and leaving to the oscillator with different velocity give a forced to the vibration. Because the small mass stay on the oscillator surface for some time then the effective mass of the oscillator will periodically vary in time. In this paper it will be studied the possibilities of the mass and the velocity of the masses which are hitting and leaving to the oscillator by using a perturbation method.
On the modeling of cross-section and longitudinal section of pipes
Authors: Kusno  
Published: November 2019

Abstract
This paper deals with the construction of the various inflate-deflate pipe patches with its center curve of a line segment. The construction is formulated by the cross-section, the longitudinal section and the line segment center curve of the pipe patches. The objectives of the research are to model the cross-section curves of the patches by using the polar coordinate, and the longitudinal section of the trigonometry, Bézier, and Hermit curves to enable designing the various models of pipe parts. The study found that some polar formulas and regular polygon sides can evaluate the various cross-section forms of the pipes, and the function cosine, sinus, Bézier and cubic Hermit can draw, respectively, the longitudinal section forms of the pipes. We have tested as well these formulas, and the results show that they are very useful to design the pipes in which its center curves are lines. In the future works, we need to study the pipe modeling with its center curves of space curves.
Multi agent through serret-frenet system
Authors: Tjahjana R H , Utomo R H S 
Published: November 2019

Abstract
Multi agent system present in our daily live. The Multi agent system, starting from a few agents to tens and even millions of agents. Control of multi-agent is one of the most important problem in control theory. Many methods are used to control of multi agent, one of the method is optimal control. Approach with optimum control too many kinds. In this paper, the authors use the Serret-Frenet system. In mathematical models of multi-agent systems written, multi-Serret-Frenet dynamics systems are used. Some agents move with the initial formation from the starting position, towards the final position that is popularized. The movement of maintaining the formation and minimizing the cost of control is translated into the functional cost model. From the dynamic system model and functional model of cost is designed multi-agent control system with the optimum control approach.
An improved forecasting method of frequency density partitioning (FDP) based on fuzzy time series (FTS)
Authors: Irawanto B , Ningrum R W , Surarso B , Farikhin  
Published: November 2019

Abstract
FTS is popular in many recent years. Researchers are competing to outperform existing method by making new improvement including modifications at clustering step. Here we discuss about clustering process, i.e., partitioning based metric frequency density and firefly clustering algorithm. In the simulation, we compare the forecasting results and error value of the method with previous existing methods. The modifications give better forecasting results than previous methods indicated with smaller Root Means Errors (RMSEs) and Average Forecasting Error (AFER).
Classroom action research for improving teacher’s profesionalism
Authors: Irwandi  , Khairuddin  , Alwi N A , Helsa Y 
Published: November 2019

Abstract
This study aims to enhance teachers’ competence in conducting Classroom Action Research (CAR) in order to improve their professional services in handling the teaching and learning process. The researchers’ preliminary observations found that many teachers were still lack of competence in conducting correctly classroom action research following the guidelines, though some of them have conducted it several times. This problem is caused mostly by the factor of research proposal which is still unrecognazible. The qualitative method was applied in this study through training and intensive counselling on how to design CAR. The research findings focused on the qualification of research proposal in terms of language aspect and theoretical aspect. The language aspect focuses on sentence construction, paragraph construction, the use of language in the chapter of introduction and the chapter of theoretical bases. The theoretical aspect focuses on the accuracy of selection of theory, and the variety of theoretical sources. It is found that 25 % of CAR proposal contains recognizable sentences based on the form of S-P-O-K1-K2, 75 % of the proposals are recommended to be reviewed, 50 % of proposals contain regonizable paragraphs in terms of cohesion, and coherence. In the aspect of theoretical accuracy, 75 % of proposals contain theories which are in line with the research problem, and 25 % of proposals should be revised. Moreover, more than 95 % of proposals still depend on the books as the source of theory and only 5 % of proposals which cite from journal. It is concluded that the teachers’ competence in using scientific language must be improved and the source of theory must be upgraded through citing from recommended journal.
Students’ difficulties in mathematics learning with artisan character type in HOTS trigonometry test
Authors: Zulfa H , Saputro D R S , Riyadi  
Published: November 2019

Abstract
HOTS is a real-life based assessment of everyday life, but in practice, the students are having trouble completing the HOTS issue. Learning difficulty is also influenced by artisan character type. The artist’s subject finds patterns and relationships by scribbling on the answer sheet and using the knowledge he has. The artist’s subject guesses by connecting the information from previous experience available. The artisan subject generalizes by using symbols. The artisan subject examines the validity of an argument by showing a supporting example. The instruments used are character type questionnaire, and HOTS test. This study aims to describe the difficulty of structured numbered heads mathematics learning model in students with artisan character, especially in solving HOTS in trigonometry material. This is descriptive qualitative research. The results show that students with artisan have a total of 2.02 % difficulties in number fact skill, 13.1 % in arithmetics skill, 34.34 % in information skill, 27.27% in language skill, 23.23 % in visual-spatial skill.
Improving the results of mathematics learning of grade 1 elementary school Sebasang Ketanga 2 by utilizing magic stick
Authors: Prabowo A , Maulidyawati D , Yuliawati H 
Published: November 2019

Abstract
The purpose of this research is to know the success of learning mathematics in grade 1 SD Sebasang Ketanga 2 by utilizing magic stick, in terms of student’s interest in learning. This study is a classroom action research, in the order of Plan-Act-Reflect and indicator has been achieved in 1 cycle. But, the teacher decided to continue the act into cycle number 2. The results, after 2 cycles finished, showed that the students’ learning outcomes in the abatement materials had reached an average of 92.4 and 100% had met the KKM. In addition the magic stick has succeeded in making the students eager in learning reduction, shown by the spirit of students when delivering the results of calculations by using magic sticks.
Mathematics learning disabilities of the slow learner students on pythagorean theorem
Authors: Metikasari S , Mardiyana  , Triyanto  
Published: November 2019

Abstract
This research was aimed to analyze mathematics learning disabilities of the slow learner on Pythagorean Theorem. This research was an exploratory study with qualitative approach. The subjects of this research were 2 of the 8th grade’s slow learner students of two inclusive schools in even semester of the 2017/2018 academic year. Data collection was done using test and interview method. Based on the data analysis, the results showed that the subjects had mathematics learning disabilities on Pythagorean Theorem that was categorized in (1) procedural memory deficit: the subject could not do the procedure properly and still had difficulty in operating the algebraic form, (2) semantic memory deficit: disability in learning arithmetic facts, disability in using the principle (3)visuospatial deficit: the subjects were still confused when the triangle was rotated.