bluuebunny/crossref_metadata_2025 huggingface dataset:
Morphosyntactic features in earlier African American English
Authors: Kautzsch Alexander
Published: November 2019

The present study contrasts two subcorpora of the Corpus of Earlier African American English, one consisting of
letters and one of transcribed speech with a view to determining the relative non-standardness of the language in both subcorpora. By using
the set of features laid out in the Mouton World Atlas of Variation in English (WAVE; Kortmann and Lunkenheimer 2012) the attestations and their relative frequency in both subcorpora were determined and scrutinised. The
analysis shows that letters are relatively more standard in their language than transcribed speech and this is assumed to be due to letter
writers awareness of non-standard structures in vernacular speech and avoid them in written language.
Complementing cognitive linguistics with pragmatics and vice versa
Authors: Chen Rong
Published: November 2019

In this chapter I present two examples in Chinese that illustrate the efficacy of combining cognitive linguistics with pragmatics in the study of language. The first is the greeting ni chi le mo?(你吃了没?) ‘How are you?’ in a Chinese dialect about which I argue that an adequate analysis is obtained by combining the basic tenets of construction grammar with principles of the speech act theory. The second comes from metaphor. By looking at metaphors that are not meant to help the hearer understand a thing but rather to see it differently, I make the same point, that cognitive linguistics and pragmatics can complement each other so that a deeper understanding of language is achieved.
Covert and overt attitudes towards Catalonian Spanish laterals and intervocalic fricatives
Authors: Davidson Justin
Published: November 2019

Building off a series of matched guise studies focused on attitudes toward native-like (L1) and accented (L2) Spanish and Catalan in Catalonia, Spain (Woolard, 1984, 1989, 2009, 2011; Woolard & Gahng, 1990), this study explores covert and overt attitudes toward two specific phonetic features of Catalonian Spanish, namely lateral velarization and intervocalic /s/ voicing. Catalan-Spanish Barcelonan bilinguals and Madrid Spanish monolinguals (N = 54) completed a matched guise task eliciting covert judgments toward each phenomenon independently. Results from the matched guise, in combination with elicited overt attitudes from sociolinguistic interviews, demonstrate how broader linguistic attitudes and ideologies toward the Spanish language can be comprised from an aggregate set of individual speech variants and the distinct social values afforded to each of them.
Spoken word recognition and shesheo in Northwestern Mexico
Authors: López Velarde Mariela , Simonet Miquel
Published: November 2019

This study investigates the auditory lexical processing of the two main variants of “ch” (as in charco ‘puddle’) used in the Spanish spoken in northwestern Mexico. A feature of this dialect is the variable implementation of “ch” either as an affricate, [tʃ], or a fricative, [ʃ]. We designed an auditory lexical decision task with auditory priming to explore the effects (if any) of this variability on the recognition of words by members of this community. Target words were presented with either variant as their word-initial consonant (e.g., [tʃ]arco ~ [ʃ]arco), and they were preceded by auditory primes with a matching variant ([tʃ]arco-[tʃ]arco, [ʃ]arco-[ʃ]arco), a mismatching variant ([tʃ]arco-[ʃ]arco, [ʃ]arco-[tʃ]arco), or an unrelated prime. The results show that members of this community are equally likely to accept Spanish word forms produced with either variant. Furthermore, both variants primed listeners equally effectively in their recognition of spoken words, suggesting that both activate the same entry in their mental lexicon (as opposed to parallel representations). Finally, recognition was found to be faster when the word-initial phonetic variant was [tʃ]; this suggests a privilege of [tʃ] over [ʃ] at some level of representation. The results support the claim that, in cases of sociophonetic variability, members of the speech community may include more than one phonetic variant in their mental representation of words, but that, even in such cases, one of the variants may take processing precedence over the other. These results, in turn, suggest it is possible that the nature of the mental representations of an individual are particularly affected by the dialect spoken in their speech community.
The perception-production connection
Authors: Mazzaro Natalia , González de Anda Raquel
Published: November 2019

This study investigates the perception and production of two sociophonetic variables of Chihuahua Spanish: rhotic assibilation ([ř]), a change from above associated with women and higher classes, and deaffrication of the voiceless post-alveolar affricate ([ʃ]), a change from below associated with men and lower social classes. Thirty-three native Spanish speakers from Chihuahua completed a production task to establish whether they produced [ř] or [ʃ] and a discrimination task to determine if they were able to perceive these variants. Results show that while production rates were similar for [ř] and [ʃ], listeners had greater sociolinguistic awareness of [ʃ], resulting in a closer production-perception relationship for this variant. We conclude that the perception and production of phonetic variants interact in variable-specific ways that depend crucially on a combination of linguistic and social factors, including phonological context, frequency, and social salience to the speech community.
Of intersectionality, replicability, and holistic perspectives
Authors: Mack Sara
Published: November 2019

Sociolinguistics is grounded in the premise that social variables are essential to understanding how language works. While early Spanish sociolinguistic studies focused on speech production, there is a growing body of work in Spanish sociophonetics that recognizes the role of speech perception in variation and social identity. As this field grows, it is useful to reflect upon best practices for moving forward. To that end, this chapter considers the field from a theoretical lens, focusing on intersectional approaches (Crenshaw, 1989; Levon, 2015) as it addresses the practical challenge of replicability (Simons, 2014) and offers recommendations for a holistic approach that will poise Spanish sociophonetic perception data to effectively address questions of language variation and change.
Heritage languages
Authors: Aalberse Suzanne , Backus Ad , Muysken Pieter
Published: November 2019

Heritage languages, such as the Turkish varieties spoken in Berlin or the Spanish used in Los Angeles, are non-dominant languages, often with little prestige. Their speakers also speak the dominant language of the country they live in. Often heritage languages undergo changes due to their special status. They have received a lot of scholarly attention and provide a link between academic concerns and educational issues. This book takes a language contact perspective: we consider heritage languages from the perspective of their history, their structural properties, and their interaction with other surrounding languages.

The chapter on Bilingual language use has been co-authored by Anne Verschik; the chapter on Processing has been co-authored by Gerrit Jan Kootstra; and the chapter on Papiamentu has been co-authored by Bart Jacobs.
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

Mutations 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

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

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

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

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

The 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

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

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

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

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

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

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

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

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

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

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

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

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.
Mathematical connection ability of elementary school student in number materials
Authors: Kenedi A K , Sari I K , Ahmad S , Ningsih Y , Zainil M
Published: November 2019

The background of this research is the lack of information about the mathematical connection ability of elementary school students. This study aims to determine the strength of mathematical connections of elementary school students concerning the ability to solve problems in the matter of numbers. The research used the qualitative approach with descriptive method. Instruments used in research are observation and test. The results showed that in the indicator to recognise ideas in mathematics as many as 12.50% of elementary school students scored between 60 and 69 with enough category, 55.83% composed between 45 and 59 with less category, and 31.67% scored between 0 and 44 with less than one category. Indicators understand how ideas in mathematics interconnect and underlie each other as many as 10.83% get scores between 60 and 69 with enough category, 61.67% get scores between 45 and 59 with fewer category and 27.50% scored between 0 and 44 with less than one category. The indicator of applying mathematics in everyday life shows that as many as 11.67% of elementary students who scored between 60 and 69 with sufficient category, 67.50% scored between 45 and 59 with less category, and 20.83% scored between 0 and 44 with less than one category. This research shows that the mathematical connections of elementary school students in solving mathematical problems in the number matter are still low. The results of this study have implications as the basis of teachers to improve the ability of mathematical connections of the elementary school student.
Learning differential calculus using self-regulated flipped classroom approach
Authors: Istiandaru A , Setyawan F , Hidayat A S E , Istihapsari V
Published: November 2019

Differential calculus becomes a primary pre-requisite material for every student to start learning calculus. It mainly discusses the concepts and theorems regarding derivative of functions. Many mathematics educators believe that learning differential calculus needs specific conditions and attitude as it cannot be set as rote and procedural learning. This research aims to find out the students’ perception towards the implementation of self-regulated flipped classroom approach in their differential calculus class. Thirty-six students participated in the seven meetings of the class and gave their perceptions at the end of every meeting. They were engaged in a various type of learning activities outside the classroom such as setting their own goal, gaining information from many sources, and uploading a video of their presentation, while during the class, they were assessed with an interview confirming their understanding about the topics. The result suggests that the self-regulated flipped classroom approach is promising to maintain the students’ right attitude towards differential calculus.
Exploration of students’ representation in solving pythagorean theorem problems based on cognitive style
Authors: Pagiling S L
Published: November 2019

This study aims to explore the students’ representations in solving Pythagorean theorem problems. Participants of this study consisted of a female student with reflectiv estyle and a female student with impulsive cognitive style. They had an equivalent mathematical ability. This study used the qualitative method. The researcher decides on the methods of data collection based on mathematical problem-solving tasks and task-based interviews. To obtain valid data, the researcher performs the time triangulation. The findings of the study showed that: (1) the mathematical representations of reflective student were (a)recognizingand presenting known and unknown information visually by sketching the car’s path, (b) revealing then formulating problem-solving strategy using visual representation, (c) revealing mathematical model manipulation involve Pythagorean theorem, and (d) looking back the solution by using verbal representation;(2) the mathematical representations of impulsive student were (a)recognizing then presenting known and unknown information verbally, (b) revealing then formulating a problem-solving strategy using visual representation, (c) revealing mathematical model manipulation by saying that the distance between point A and B can be determined using the Pythagorean theorem, and (d) looking back the solutions by using verbal representations.
Ethnomathematics exploration at the Chinese Wall and its relation to the concept of geometry
Authors: Dwidayati N , Zaenuri  , Suyitno A
Published: November 2019

The purpose of the research was to explore forms of ethnomathematics on the Chinese wall and analyze their relationship with geometrical concepts. The study was conducted in 4-13 Mei 2018. The research location was the Chinese wall. Data collection was done by observation. Data were analyzed descriptively. The results showed that various forms of building geometry in the Chinese wall could identify various geometrical structures: flat, like squares, rectangles or circles, as well as various forms of building space, such as beams and cubes, and building spaces such as tubes.
Behavioral response of Sitophilus oryzae L. to repellent effect frompost-harvest waste of local cardamom
Authors: Widiyaningrum P , Candrawati D , Indriyanti D R , Priyono B
Published: November 2019

Post-harvest waste of local cardamom plants (Amomum cardamomum Wild.) such as stem and leaves have no economic value but potential as a bioinsecticide. It was known to contain insecticidally active ingredients. This study aimed to analyze the behavioral response of adult Sitophilus oryzae, L. under two shapes extract frompost-harvest wasteof local cardamom as the repellent control. Four doses, ranging from 25% to 100% of each treatment were tested using Y- tube olfactometer.The behavioral responsewas observed by the PreferenceIndex(PI) value and Percentage of Repellency (PR). The PI value was analyzed descriptively, while PR was analyzed by two way ANOVA. The data show that PI value is negativeat 75 and 100% doses both of cardamom plant.PR values were significantly under difference of doses and shape,whilethe optimally doses at 100% (LSD; α<0.05).PRvalue of extract was 57.6%, higher than the powder which was only 52.8%. It is found that rice weevil adult has the ability to respond behaviorally to post-harvest waste of local cardamom plants, but extract shape is more effective than powder. This study provides positive information about the potential that post-harvest waste of local cardamom as an economically-value bioinsecticide.
Identification of insect pests that attack the coconut plants in Jepara regency
Authors: Indriyanti D R , Utami Z T , Setiati N , Soesilowati E , Slamet M
Published: November 2019

Jepara regency is a famous coconut producer. However, its coconut production continues to decline over times. The purpose of the study was to identify the species of insect pests that attack the coconut plant. Research method was done by observation in the field to record insect pests that attack the coconut plants. Location of observation was in three villages of Jepara regency. Insects were identified by morphological features. Insects’ identification was performed in the biology laboratory of Universitas Negeri Semarang. Observation results showed that there were two species of insects attacking the coconut plants i.e. Oryctes rhinoceros and Brontispa longissima. The results of this research are expected to provide information that is useful to determine the right pest control strategy in coconut plantation.
Representation of sustainability concept in prospective biology teacher learning
Authors: Hartadiyati E , Wiyanto  , Rusilowati A , Priyono A
Published: November 2019

Fulfillment of sustainability skills competencies in the 21st century and industrial revolution 4.0, it gives important consequences to prepare teacher candidates who can implement the concept of sustainability in learning on the material they design. This study aims to describe the way prospective biology teacher students translate the understanding of sustainability in pedagogy which is shown in the representation of learning designs made. Ten prospective biology teacher students were recruited to participate in a workshop on learning that contained the concept of sustainability. Conception and awareness about sustainability are measured before and after the program takes place using a predetermined sustainability definition framework. Sustainability representation analysis is carried out qualitatively, seen from the learning plan made and observation real teaching using video. The results obtained show a variety of sustainability representation patterns from those that appear in the form of "mosaics" that are separated until connected and integrated, at the level of only information until the activities carried out by students. Sustainability charge quality that looks comparable to the increase in conception and sustainability awareness obtained by each candidate of biology teacher. The conclusion of this study is the representation of consept sustainability understanding in prospective biology teacher learning has shown suitable harmony among the three main perspectives on sustainability, seen to reach 80% of the workshop participants.
The scientification of jamu: a study of Indonesian’s traditional medicine
Authors: Sumarni W , Sudarmin S , Sumarti S S
Published: November 2019

Various species of medicinal plants in Indonesia commonly used by residents as herbal medicine. Indigenouse knowledge of herbal medicine has never been scientifically researched, whether it is related to the benefits, the technology of manufacture, the effort of obtaining qualified herbs, and the compound components in medicinal plants. The purpose of this study was to document information and saintification about ethnomedicine in Semarang City, Central Java, Indonesia. This is a qualitative study, with data collection techniques through field studies to the research sites to gather information from traditional drug makers through semi-structured interviews and field observations. The data obtained is further analyzed to obtain a scientific explanation. The focus of this research is the type of traditional herbal products, how to make herbs, composition making, and how to produce the best herbal medicine based on information from traditional medicine maker. Two types of traditional herbal medicine are analyzed. Each type of traditional herbal medicine is described from the aspect of benefits, the main compound, the way of making, the creative idea aspect to produce the best herbal medicine, and the best material composition.
The analysis of prospective science teachers’ pedagogical content knowledge (PCK) on living organism physiology and anatomy course
Authors: Parmin  , Savitri E N , Amalia A V , Nadia I
Published: November 2019

This study intended to obtain information about the scope of Pedagogical Content Knowledge (PCK) on Living Organism Physiology and Anatomy Course. The sample of this research was all 71 students of Integrated Science Education program in the even semester, Universitas Negeri Semarang, who took the Living Organism Physiology and Anatomy course. The research sample was picked using the purposive sampling. The data collection was conducted employing the evaluation instruments consisting of test questions, student portfolio, and micro-teaching assessment. The research results indicated that about 89% of the students mastered the Content Knowledge. The components of Content Knowledge including method selection, material delivery, and classroom management were learned respectively by 81%, 85%, and 84% of the students. It concluded that the PCK on Living Organism Physiology and Anatomy influenced significantly in improving the quality of prospective science teachers.
The effectiveness of multiple representation-based student worksheet of inheritance properties topic to improve students’ critical thinking skill
Authors: Hidayati D F , Abdurrahman  , Sunyono
Published: November 2019

This research aims to describe the effectiveness of multiple representation based-student worksheets in improving students’ critical thinking skills. The research method used is a quasi-experiment by using pretest-posttest design. This research was conducted in one of the Lampung provincial junior high schools. The sample in this study amounted to 58 students consisting of two experimental classes obtained by using a purposive sampling technique. The data was gained by using questionnaire and test, and it analyzed by using paired sample t-test to investigate the effectiveness of the learning method in both groups of samples. The proposed methods show that there were differences of pretest and posttest score between the first and second experiment class as well as the size effect. Furthermore, students also give good responses to the learning process by using students’ worksheet based on multiple representations. For all test cases, the experimental results imply that Multiple Representation-based Student Worksheet is one of the effective ways of improving students’ critical thinking skills in the inheritance properties topic. This is evidenced by an average increase in all significant critical thinking indicators, especially indicators that advance clarification in the high category.
Application of SSCS model (Search, Solve, Create and Share) for improving learning outcomes: the subject of optic geometric
Authors: Sukariasih L , Ato A S , Fayanto S , Nursalam L O , Sahara L
Published: November 2019

This study proposes to determine the significant difference between the average N-gain of the experimental class students and the N-gain average of the control class students on the topic of geometry optics. Samples were students of class X of Public High School 1 Kabangka namely X2 class of 30 students as an experimental class learning model SSCS (Search, Solve, Create, and Share) and class X1 as many as 31 students as the control class with the direct learning model and the instrument of this research is test result of learning. The data were analyzed statistically showed the result of post-test of experimental class students on the subject matter of optical geometry that is obtained the average value of 81,667 while in the control class got the average value of 75,806. There is no difference between a mean score of pre-test of experiment class student with a mean value of pre-test of control class student on the topic of optical geometry at α = 0,05. The average post-test grade of the experimental class is significantly better than the mean post-test of the control class students on the subject matter of optical geometry at α = 0.05.
Students’ view of mathematics in general high school and vocational high school
Authors: Sthephani A , Hidayat R , Hannula M S , Saad M R M
Published: November 2019

Much of the current debate among researchers revolves around the differences on the view of mathematics in secondary schools. The present research is concerned with the issue of whether or not students’ view of mathematics in secondary schools in terms of the type of schools’ factors are different between general high schools (Sekolah Menengah Atas referred to as SMA) and vocational high schools (Sekolah Menengah Kejuruan referred to as SMK) or not in the Riau province - Indonesia. This research involved a total of 276 secondary school students, 131 students from SMA and 145 students from SMK. A survey design was employed to investigate the students’ view of mathematics among secondary school students using the questionnaire. The quantitative data was statistically analyzed using MANOVA. Findings of this study indicated that a one-way MANOVA analysis revealed a significant multivariate main effect for SMK and SMA. It was concluded that SMK had a more positive view than SMA. SMK had a higher effort, mastery of goal orientation and self-confidence. These findings imply that teacher should consider students’ view of mathematics to present the most suitable learning strategy which can be imposed for students in order to boost their mathematics achievement
The development of web-based multimedia physic learning tool to enhance student’s character
Authors: Akhlis I , Wahyuni S
Published: November 2019

The learning media could (1) make more attractive learnings; (2) realize interactive learning through the application of learning theories and psychological principles in terms of student participation, feedback, and knowledge; (3) improve the quality of learning outcomes when integrated with words and illustrations to accurately and clearly communicate the elements of education; (4) enhance students’ positive attitudes towards the things they have learnt and learning processes. Furthermore, Dewey emphasised that educational purposes are not only to result in well-informed people but also to know the culture, master science, and develop intellectuality. This research aimed at revealing the effectivity of web-based physics learning tool aided with educational videos to enhance the students’ characters and learning outcomes. The research population was X High School graders. The data were taken from observation and test. Shortly, the research found that the learning tool could enhance the students’ characters and learning results.
The role of students science literacy in Indonesia
Authors: Ardiyanti Y , Suyanto S , Suryadarma IGP
Published: November 2019

Education through learning science, especially biology, is expected to be a literate of science. This is one of the objectives of the current curriculum in Indonesia. The scientific literacy in question is the ability to use scientific knowledge, such as identifying problems and concluding based on evidence in order to understand and make decisions about nature and its changes through human activities. The purpose of this study was to see how the role of scientific literacy in learning to improve students’ reasoning and abilities in science learning. The method used is a meta-analysis, using 18 significant data and applying statistical methods to complement other objectives. This article shows that the important role of scientific literacy in science (biology) learning is the process of reasoning and understanding in making decisions about nature and is able to optimize the opportunities of learning models to be used optimally and able to organize the load of students’ cognitive theory according to their level.
Mental structure construction of field independent students based on initial proof ability in APOS-based learning
Authors: Wijayanti K , Waluya S B , Kartono  , Isnarto
Published: November 2019

Mathematics proof plays an important role in learning the abstract algebra included group theory. The aim of this study was to describe the mental structures that might take place when FI students were learning the concept of group theory through APOS-based learning. This study was a descriptive qualitative. The participants of this study were eight (8) undergraduate students who were taking Introduction to Algebraic Structure 1, included group theory, at Universitas Negeri Semarang. Each of low and medium level of initial proof ability consisted of 3 participants, while high level of initial proof ability consisted of 2 participants. There were two instruments used to gather data: written examination in the course and a set of interview. The participants with low level of initial proof ability tended to construct the mental structure of Object for a set, did not construct the mental stucture of Object for the binary operation and the axioms of group. The participants with medium level of initial proof ability constructed the mental structure of object for a set, tended to construct Object for the binary operation, the axioms of group, and tended to construct the scheme of group. The participants with high level of initial proof ability constructed mental structure of Object for a set, has not fully constructed the mental structure of Object for the binary operation and for the axioms of group yet, as well as has not fully constructed the scheme of group.