bluuebunny/crossref_metadata_2025_split huggingface dataset:
Extradural Transjugular Transsigmoid Approach with High Cervical Exposure for Glomus Jugulare Tumor
Authors: Matsushima Ken , Kohno Michihiro , Hashimoto Takao , Izawa Hitoshi , Tanaka Yujiro , Inagaki Taro 
Published: October 2019

AbstractSurgical removal of glomus jugulare tumors is challenging owing to the complex anatomy of the temporal bone and craniocervical region, aggressive tumor invasion into the nearby structures, and their hypervascularity. However, recent advances in skull base techniques, intraoperative neuromonitoring, and radiological interventions have enabled their relatively safe resection, while giving priority to functional preservation. This video demonstrates a case of a glomus jugulare tumor treated by the extradural transjugular transsigmoid approach with high-cervical exposure and tympamoplasty, after preoperative embolization. A 47-year-old woman presented with progressive hearing disturbance, pulsatile tinnitus, and hemifacial spasm. Neuroimaging displayed a hypervascular tumor occupying the temporal bone, extending to the cervical region through the jugular foramen, and to the external auditory canal. Preoperative feeder occlusion was successfully performed without any additional symptoms, while carefully evaluating the provocative test. Near-total resection of the tumor was achieved through the transjugular transsigmoid approach with high-cervical exposure under detailed neuromonitoring, including continuous facial nerve monitoring and auditory brainstem response. In this patient, in whom the tumor did not invade intradurally and the sigmoid sinus was already occluded preoperatively, the sinus was managed only by coagulation, to avoid unnecessary dural opening and the risk of cerebrospinal fluid leakage. Anterior facial nerve rerouting was not required since the tumor removal was accomplished through the corridor above and below the fallopian bridge. The patient had no new neurological deficits, and her pulsatile tinnitus and hemifacial spasm disappeared after the surgery. Her hearing disturbance improved postoperatively.The link to the video can be found at: https://youtu.be/gqf3dxHlv_0.
Euthanasia: Ethical Challenges of Shift from “Right to Die” to “Objective Decision”
Authors: Minocha Vivek R. , Mishra Arima 
Published: October 2019

AbstractEuthanasia is mercy killing to alleviate the pain and misery of moribund persons. The thought in this regard is “Right to Life” includes “Right to Die.” This paper examines the issue of euthanasia in advanced stage of terminal cases with no possibility of reversal and it has been argued that there is a case for lifting euthanasia from the domain of human rights “Right to Die,” bringing the issue as a matter for professional opinion, a kind of medical advice/prescription. Guidelines need to be framed and criteria are laid down and notified under which euthanasia can be recommended. The decision is taken whether or not the criteria laid down are fulfilled in an objective manner. Like for other medical interventions “informed consent” is essential. In consideration of safeguards the decision is entrusted to a medical board and is subject to a legal prescrutiny. Professionally prescribed decision will to a great extent reduce emotive response surrounding euthanasia. The family may not have to face a difficult dilemma in deciding about euthanasia. There may not be a necessity of “living will,” although it may still be useful. The change to treat euthanasia as a professional decision/medical advice will require making legal and administrative provisions to empower medical establishment to discharge responsibility of euthanasia. It is essential to legalize euthanasia with corresponding modifications of medical ethics and code of conduct prescribed by Medical Council of India, State Medical Councils, and other regulatory bodies. It is essential to identify the procedure for carrying out euthanasia and the personnel assigned to actually carry out. Injection of lethal substance in lethal dose may be a favored choice. Once final decision after legal prescrutiny is arrived for euthanasia, differentiating passive and active euthanasia is unnecessary. In one perspective, active euthanasia is less disturbing for the patient, family, and friends as withdrawal of supporting tubes leading to dehydration, wasting, and struggling for breath associated with passive euthanasia, which nullifies the basic tenet of euthanasia, can be avoided. There is a possibility of spill over benefit of “active euthanasia” in the form of opportunity to promote cadaveric organ transplantation. Caution has to be exercised for effective safeguards to prevent misuse. There is a case for consideration for brining decision-making process regarding euthanasia within medical professional assessment and implementation.
Effects of caffeine on inspiratory muscle function
Authors: Nicks Clayton R. , Martin Ellen H. 
Published: October 2019

AbstractResearch suggests that caffeine can enhance measures of muscular strength in the upper and lower extremities, although the literature is somewhat equivocal. Little is known on whether or not caffeine will improve maximal inspiratory pressure (MIP), a surrogate measure of inspiratory muscle strength. The purpose of the study was to determine the effects of a moderate dose of caffeine on inspiratory muscle function. Fifteen (8 male, 7 female) healthy adults (mean ± SD: age = 24.3 ± 6.4 years; height = 1.75 ± 0.11 m; body mass = 78.8 ± 16.5 kg) volunteered to participate in the study which used a double‐blind, placebo‐controlled, cross‐over design. During the initial visit, baseline data was collected and participants were familiarized with inspiratory muscle measurements. For the second and third visits, participants ingested either a 5 mg kg−1 dose of caffeine (CAF) or placebo capsule (PL). After one hour, they completed at least 12 maximal inspiratory manoeuvres with 1 min rest between each attempt. MIP, maximal inspiratory peak pressure (PP), and maximal rate of pressure development (MRPD) were recorded. The CAF trial resulted in significantly higher MIP (154.7 ± 35.8 vs. 146.6 ± 37.6 cmH2O; p = 0.02) and PP (165.8 ± 36.8 vs. 158.3 cmH2O; p = 0.01) compared to the PL condition. No significant difference was observed in MRPD (p = 0.18). MIP and PP improved after ingestion of caffeine compared to the placebo condition. The findings from the study further establish caffeine's potential ergogenic benefit on measures of muscular strength.
Electromagnetic strain measurements and two-directional mechanical stress estimation for a REBaCuO ring bulk reinforced by a metal ring during field-cooled magnetization
Authors: Namba Sora , Fujishiro Hiroyuki , Naito Tomoyuki , Ainslie Mark D , Huang Kai Y 
Published: October 2019

Abstract
In this paper, simultaneous measurements of the electromagnetic strains along both the circumferential (θ) and radial (r) directions are reported for a large single-grain EuBaCuO ring bulk reinforced by an Al alloy ring during field-cooled magnetization (FCM) from 5 T at 50 K using several strain gauges adhered to the surface. To verify the experimental results and to understand the complex stress–strain behavior, mechanical analyses were carried out using a three-dimensional finite element model that closely represents the experimental setup. The simulation results of the electromagnetic strains along both directions showed excellent qualitative and quantitative agreement with the experimental ones. These results strongly suggest that the numerical model must include the exact same structure (size, shape and materials) of the mechanical support structure as the experimental setup in order to reproduce the experimental results both qualitatively as well as quantitatively. This also explains our previous research (SuST 2019 32 015007), where the measured circumferential strains were about 50% smaller those in the numerical simulation. Furthermore, the electromagnetic stresses along both directions during the FCM process are estimated from the obtained experimental strains. As a result, the estimated stresses were fairly consistent with those obtained by the numerical simulations, suggesting that our stress–strain simulation technique is both qualitatively and quantitatively reliable and useful to clarify the possibility of mechanical fracture of bulk superconductors.
The potential effects on junior high school mathematics learning: The reading texts for learning stage of the school literacy movement
Authors: Effendi KNS , Zulkardi  , Putri RII , Yaniawati P 
Published: October 2019

Abstract
This study discusses the result of the field test stage of reading texts development for reading activities in School Literacy Movement in mathematics learning with futsal context. This study is development research with design research method and development studies as its type. The evaluations at the prototyping stage use the formative study with self-evaluation, expert review, one-to-one, small group, and field test as its phases. The subjects were 7th-grade students at a junior high school in Karawang. The data were collected using documentation, questionnaires, tests, and interviews. The calculation of the effect size is 2,895 and categorized as high. Based on this result, it shows that the reading texts for the learning stage of the School Literacy Movement have potential effect for students in mathematics learning.
Can Sociomathematical Norms Be Developed With Learning Media?
Authors: Adi Widodo Sri , Turmudi  , Afgani Dahlan Jarnawi 
Published: October 2019

Abstract
The purpose of this article shows that sociomathematical norms can be raised through learning media. Sociomathematical norms are social norms related to problem-solving in mathematics learning. Sociomathematical norms can be formed from interactions between students or teachers in learning mathematics so that the culture of mathematics can be formed in a group or the class community at school. This preliminary study is not to create learning media that can improve the norms of sociomathematical but can only utilize conceptual by comparing various literature related to social norms, sociomathematical norms, and learning media. Theoretically, using visual media can improve sociomathematical norms, so that mathematical culture in the class can be formed. This is because visual learning media can be used by students to interact with the surrounding environment. In this regard, the teacher needs to prepare visual learning media to help mathematics learning so that the mathematics culture in the class can be formed
Lingko: Interweaving Manggarai Culture, and Mathematics
Authors: Makur A P , Sutam I , Gunur B , Rampung B 
Published: October 2019

AbstractThis research was conducted to explore the relationship between formal mathematics andLingko, a system of traditional agricultural land distribution in Pocoleok, Manggarai-NTT Regency shaped like a spider web.Lingkowas interesting to study concerning mathematics because of the philosophical values contained inLingkoand theLingkosharing ceremony. This research focused on two things, namely: (1) how the distribution of ulayat land,Lingko, was mathematically reviewed while still paying attention to cultural values, and (2) how the community practiced mathematical concepts in the distribution ofLingko. The first focus of the problem was to uncover the mathematical activity of the distribution of ulayat land,Lingko, which was unknowingly carried out by the Pocoleok, Manggarai peoples. Knowledge gained from this first study might produce a new approach to learning mathematics, both from a mathematical or mathematical education perspective. The second focus of the problem sought to reveal the extent to which the basic concepts of Manggarai culture (following understanding) to solve mathematical problems faced in the reality of life. This second study provided more space for cultural-based mathematics learning, namely how to comprehend mathematical concepts based on contextual issues that arise in Manggarai culture.
Teachers’ belief in mathematics teaching: a case study of early childhood education teachers
Authors: Noviyanti M 
Published: October 2019

Abstract
This article aims to analyze teachers’ belief in mathematics teaching. Furthermore, this article will be used as a reference for a professional development program that the researcher is going to develop. This research is a case study with five respondents in a city in West Java, Indonesia. Semi-structured interviews towards five respondents were conducted using an interview guideline that refers to the instrument The Mathematical Development Beliefs Survey. The thematic analysis was used for data processing in this research. The result of the research revealed all respondents agreed that mathematics is a substantial part of early childhood education curriculum, contributes to the confidence of the students, development activities could be carried out, and early childhood is ready for mathematics. However, they are unsure and less confident in teaching mathematics and basic math knowledge. This research suggests that professional programs given should aim to boost teachers’ belief in teaching mathematics.
8th Grade Student’s Collaboration In Circle Material By Using System Lesson Study For Learning Community
Authors: Yono S , Zulkardi  , Nurjannah  
Published: October 2019

Abstract
This study aims to describe the collaboration of students through lesson study for learning community in circle lesson. The data is obtained through the result of the observation and documentation of photos and videos. The subject of this study is second-grade students of Junior High Scholl at 1 Palembang. This is a descriptive qualitative study with PMRI approach. The learning process is done by doing a Jumping Task where students solve the problems individually and are encouraged to ask other students when difficulties are found. The use of lesson study for learning community has brought a positive impact for second-grade students like showing up a sense of care, decreasing the rise of competitiveness and creating collaboration among students in the learning process.
PISA-like problems on students’ mathematical literacy using the context of Jakabaring sport city
Authors: Mitari O , Zulkardi Z 
Published: October 2019

AbstractChallenges for developing countries must certainly have students with high mathematical literacy abilities. The fact was Indonesian students in PISA math rankings are still not good; it because of the low mathematical literacy abilities of students. This article aimed to know the potential effects of PISA mathematics problems on students mathematical literacy abilities. The method in this study used a design research type of development study with the preliminary and formative evaluation stages. The evaluation flow at the prototyping stage was a formative study including the self-evaluation stage, expert review and one-to-one, small group, and field test. In this article, the discussion of the study was about the results of students’ answers in the field test stage, questions that have potential effects that give rise to mathematical literacy abilities namely communication ability, mathematical ability, representation ability, reasoning, and argument ability, choose strategies to problem-solving ability, and use language and symbolic, formal and technical operation ability. With the dominant ability was communication ability.
Promoting students self determination theory skill in merills first principle of instruction
Authors: Wilujeng H , Kusumah Y S , Darhim D 
Published: October 2019

Abstract
The self determination theory is the ability that allows an individual to choose and have several choices to determine an action. The problems experienced by the students related to SDT are the decreasing motivation of students to develop themselves, students are unable to be responsible and not sensitive to the feelings of others. The purpose of this study was to examine the differences in SDT achievement of MPK student self determination theory (high, medium and low). This research method was quasi experiment with Post-test Only Control Design. Subjects in the study were 124 students. The learning process was carried out through Merrill’s First Principles of Instruction and ordinary learning. The results shows that the average achievement of high, medium and low MPK on the self determination skill theory of students who received MFPI learning are better than those who received regular learning. In SDT indicator, autonomy and students relatedness who have high MPK are superior in comparison to medium and low MPK. The low MPK category is better on competence indicators compared to high MPK and medium MPK. MFPI learning should be an alternative learning for teachers in mathematics because in addition to improving student cognitive abilities.
Teaching materials design based on project learning to improve the students’ mathematical understanding
Authors: Lukman H S , Setiani A 
Published: October 2019

Abstract
Project-based learning requires students to explore and combine their knowledge and skills to solve problems in groups for a certain time. Through the development of project-based teaching materials, students learn to apply theory in an activity that produces experience, so that learning is expected to be more meaningful and improve the students’ mathematical understanding. This study aimed to determine the validity, practicality, and effectiveness of teaching materials based on project learning to improve the students’ mathematical understanding, especially on the applied statistics course. The stages of this study consisted of design and development, product validation by 3 experts, limited testing of 10 students, and field testing of 97 students. The results show that the teaching material has fulfilled the valid, practical, and effective aspects used in learning because it increases the ability of students’ mathematical understanding by 15.8%.
Implementation of peer tutor learning in improving students’ mathematical understanding ability
Authors: Rosdianwinata E , Rifa’i R , Nasrullah Anton 
Published: October 2019

Abstract
The purpose of this study was to apply peer tutoring learning to improve students’ mathematical understanding skills. The method used in the study was a quasi-experimental method with a pre-test post-test control group design. The place of research was conducted in one of the universities in Banten. Samples were taken by two classes purposively. The research sample chosen consisted of two classes, namely 39 students in the experimental class and 38 students in the control class. The research instrument used was a test of comprehension ability. Data analysis is used in processing N-Gain results. The results of the study show that: 1) the achievement of the ability of mathematical understanding of students who study with peer tutoring learning is better than students who study conventionally; 2) improvement in students’ mathematical understanding ability in experimental class (peer tutoring) better than control class (conventional).
Development of high school student work sheets using VBA for microsoft word trigonometry materials
Authors: Bernard Martin , Sumarna Aceng , Rolina Rosalina , Akbar Padillah 
Published: October 2019

Abstract
The research was aimed to show that developing a learning media impacted to improve students ability in mathematical learning. The process implementated the application of VBA for microsoft word in mathematical learning. The formulation of the problem in this research are whether 1) can developing media assisted VBA for microsoft word improve mathematical ability? 2) Did Students show positive response in learning process? ADDIE was used as approach in this research. There are five stages in ADDIE approach. Population of this research was in group with 34 samples of vocational students. The instruments are cognitive test, interview and observation. Based on the results of the process, there was an increasing in mathematical ability of vocational students in trigonometry lesson through media VBA for microsoft word. The implementation of learning process through media VBA for microsoft word was success. Students enjoyed the process, active, responsive, and enthusiastic. The conclusions are the developing of media VBA for microsoft word can improve mathematical ability of vocational students before and after using media, and students showed positive response to learn by media in trigonometry.
Mathematical learning by utilizing loce, manggaraian traditional mats
Authors: Hanim M F , Makur Alberta P , Raga P , Pantaleon K V 
Published: October 2019

AbstractThis study discussed the exploration of mathematical concepts in Traditional Mat,Loce, as a product of Manggarai culture. This study aimed to describe the mathematical ideas contained in the Traditional Mat,Loce, Manggarai and how the linkages between the concepts found in the traditional mats,Loce, Manggarai and the topic of learning in schools. This research was qualitative research with ethnographic methods. Data collections were carried out through observation, interviews, and documentation. The subjects in this study consisted of 4 people, namely community leaders who could carry outRojok Loceactivities and the craftsmen. The results of this study indicated that there were several mathematical concepts found in the traditional mat,Loce, and had links in the topic of Mathematics learning in the school, namely the idea of fraction distribution, measurement, burial and measurement of the area of the flat building. The concept of fraction is when a craftsman mats a strand of pandanus leaves into several parts with an unequal size, the idea of measurement is still using traditional measurements ofpagatanddepawhich are used to measure the length and width of the mat, the concept of mating during the mat making process the same form unit square to produce a mat and the concept of measuring the area of flat building when the mat is finished.
Differential item function of gender in the mathematics elementary school tryout test
Authors: Ardiyaningrum M , Badriah L , Trisniawati  , Suhartini  , Widodo S A 
Published: October 2019

AbstractThe purpose of this paper is to describe: 1) number of items in the elementary school mathematics national examination tryout test containing DIF gender and pattern; 2) functionality of differential tests on elementary school mathematics national examination tryout test tool organized by the Pythagoras tutoring institute. This study is a quantitative explorative descriptive study with a type of case research, because it describes the characteristics of the elementary school mathematics national examination tryout tests device and is not generalizable. The amount of data used comes from the answer patterns of 919 students consisting of 431 female students and 488 male students. As for the results of this study are: 1) the elementary school mathematics national examination tryout test kit has a different power ranging from 0.282 to 1,129 and the level of grain difficulty ranges from -3,365 to 2,838; 2) Items in the elementary school mathematics national examination try out test containing 34 items or as much as 87.2%; 3) the elementary school mathematics national examination tryout test kit benefited the female group in theta > -3.06 which was seen from the DTF (differential test function) graph in the male and female groups.