bluuebunny/crossref_metadata_2025 huggingface dataset:
Evaluation of musculoskeletal phenotype of the G608G progeria mouse model with lonafarnib, pravastatin, and zoledronic acid as treatment groups
Authors: Cubria Maria B. , Suarez Sebastian , Masoudi Aidin , Oftadeh Ramin , Kamalapathy Pramod , DuBose Amanda , Erdos Michael R. , Cabral Wayne A. , Karim Lamya , Collins Francis S. , Snyder Brian D. , Nazarian Ara
Published: May 2020

Hutchinson–Gilford progeria syndrome (HGPS) is a uniformly fatal condition that is especially prevalent in skin, cardiovascular, and musculoskeletal systems. A wide gap exists between our knowledge of the disease and a promising treatment or cure. The aim of this study was to first characterize the musculoskeletal phenotype of the homozygous G608G BAC-transgenic progeria mouse model, and to determine the phenotype changes of HGPS mice after a five-arm preclinical trial of different treatment combinations with lonafarnib, pravastatin, and zoledronic acid. Microcomputed tomography and CT-based rigidity analyses were performed to assess cortical and trabecular bone structure, density, and rigidity. Bones were loaded to failure with three-point bending to assess strength. Contrast-enhanced µCT imaging of mouse femurs was performed to measure glycosaminoglycan content, thickness, and volume of the femoral head articular cartilage. Advanced glycation end products were assessed with a fluorometric assay. The changes demonstrated in the cortical bone structure, rigidity, stiffness, and modulus of the HGPS G608G mouse model may increase the risk for bending and deformation, which could result in the skeletal dysplasia characteristic of HGPS. Cartilage abnormalities seen in this HGPS model resemble changes observed in the age-matched WT controls, including early loss of glycosaminoglycans, and decreased cartilage thickness and volume. Such changes might mimic prevalent degenerative joint diseases in the elderly. Lonafarnib monotherapy did not improve bone or cartilage parameters, but treatment combinations with pravastatin and zoledronic acid significantly improved bone structure and mechanical properties and cartilage structural parameters, which ameliorate the musculoskeletal phenotype of the disease.
Translaboration in a film context
Authors: Zanotti Serenella
Published: May 2020

This study explores the notion of translaboration in the context of audiovisual translation using Stanley
Kubrick’s Full Metal Jacket (1987) as a case study. Specifically, it explores the dynamics of translaboration in
the Italian version of Kubrick’s film by drawing on archival methods and sources to examine the material traces left by the
translation process. The study aims to unveil the translaborative dimension that characterized Kubrick’s approach to film
translation, pointing to the specificity of a collaborative interaction in which one participant holds ultimate authority.
Findings gleaned from translation-related material in the Stanley Kubrick Archive (University of the Arts, London) are combined
with insights from working documents found among the personal papers of Riccardo Aragno, who translated Kubrick’s last five films
into Italian for both dubbing and subtitling. Archival documents show that Kubrick was involved in collaborative work with his
translators, sometimes adopting an interventionist approach.
Effects of a pyroglutamyl pentapeptide isolated from fermented barley extract on atopic dermatitis-like skin lesions in hairless mouse
Authors: Maruoka Naruyuki , Watanabe Bunta , Ando Daigo , Miyashita Masahiro , Kurihara Tatsuo , Hokazono Hideki
Published: May 2020

Atopic dermatitis (AD) is a chronic inflammatory skin disease characterized by pruritic and eczematous skin lesions. The skin of AD patients is generally in a dried condition. Therefore, it is important for AD patients to manage skin moisturization. In this study, we examined the effects of orally administered fermented barley extract P (FBEP), which is prepared from a supernatant of barley shochu distillery by-product, on stratum corneum (SC) hydration and transepidermal water loss (TEWL) in AD-like lesions induced in hairless mice using 2,4,6-trinitrochlorobenzene. Oral administration of FBEP increased SC hydration and decreased TEWL in the dorsal skin of this mouse model. Further fractionation of FBEP showed that a pyroglutamyl pentapeptide, pEQPFP comprising all -L-form amino acids, is responsible for these activities. These results suggested that this pyroglutamyl pentapeptide may serve as a modality for the treatment of AD.
Cargo crowding contributes to sorting stringency in COPII vesicles
Authors: Gomez-Navarro Natalia , Melero Alejandro , Li Xiao-Han , Boulanger Jérôme , Kukulski Wanda , Miller Elizabeth A.
Published: May 2020

Accurate maintenance of organelle identity in the secretory pathway relies on retention and retrieval of resident proteins. In the endoplasmic reticulum (ER), secretory proteins are packaged into COPII vesicles that largely exclude ER residents and misfolded proteins by mechanisms that remain unresolved. Here we combined biochemistry and genetics with correlative light and electron microscopy (CLEM) to explore how selectivity is achieved. Our data suggest that vesicle occupancy contributes to ER retention: in the absence of abundant cargo, nonspecific bulk flow increases. We demonstrate that ER leakage is influenced by vesicle size and cargo occupancy: overexpressing an inert cargo protein or reducing vesicle size restores sorting stringency. We propose that cargo recruitment into vesicles creates a crowded lumen that drives selectivity. Retention of ER residents thus derives in part from the biophysical process of cargo enrichment into a constrained spherical membrane-bound carrier.
Retrofitting an environmental monitor with a silicon photomultiplier sensor
Authors: Alharbi M K M , Burgess P , Taggart M P , Sellin P J
Published: May 2020

We report on the retrofitting of a standard DP2 environmental radiation monitor replacing the photomultiplier tube with a silicon photomultiplier (SiPM). The use of a SiPM has several advantages for a hand-held radiation monitor, including convenient low-voltage operation and physical robustness. We report the detection efficiency and alpha/beta discrimination performance of the modified probe compared with an unmodified version.
Standard versus hypofractionated intensity-modulated radiotherapy for prostate cancer: assessing the impact on dose modulation and normal tissue effects when using patient-specific cancer biology
Authors: Her E J , Ebert M A , Kennedy A , Reynolds H M , Sun Y , Williams S , Haworth A
Published: May 2020

Hypofractionation of prostate cancer radiotherapy achieves tumour control at lower total radiation doses, however, increased rectal and bladder toxicities have been observed. To realise the radiobiological advantage of hypofractionation whilst minimising harm, the potential reduction in dose to organs at risk was investigated for biofocused radiotherapy. Patient-specific tumour location and cell density information were derived from multiparametric imaging. Uniform-dose plans and biologically-optimised plans were generated for a standard schedule (78 Gy/39 fractions) and hypofractionated schedules (60 Gy/20 fractions and 36.25 Gy/5 fractions). Results showed that biologically-optimised plans yielded statistically lower doses to the rectum and bladder compared to isoeffective uniform-dose plans for all fractionation schedules. A reduction in the number of fractions increased the target dose modulation required to achieve equal tumour control. On average, biologically-optimised, moderately-hypofractionated plans demonstrated 15.3% (p-value: <0.01) and 23.8% (p-value: 0.02) reduction in rectal and bladder dose compared with standard fractionation. The tissue-sparing effect was more pronounced in extreme hypofractionation with mean reduction in rectal and bladder dose of 43.3% (p-value: < 0.01) and 41.8% (p-value: 0.02), respectively. This study suggests that the ability to utilise patient-specific tumour biology information will provide greater incentive to employ hypofractionation in the treatment of localised prostate cancer with radiotherapy. However, to exploit the radiobiological advantages given by hypofractionation, greater attention to geometric accuracy is required due to increased sensitivity to treatment uncertainties.
Design of DG MOSFET with Tri-Layered Strained Silicon Channel
Authors: Kumar Kuleen , Khiangte Lalthanpuii , Sankar Dhar Rudra
Published: May 2020

The Strained Silicon material concept gained their popularity since the last two decades. Along with that the double gate semiconductor on insulator (DGSOI) MOSFET also came into being with novel material based device being the requirement, hence a strain Silicon (s-Si) material DGSOI device has been developed to be the core of this work. A concise of three layers (s-Si/s-SiGe/s-Si) is deployed in channel region with varied thicknesses, and biaxial strain is thereby inducted. This leads to increase in the mobility of charge due to the inclusion of the strain mechanism in the silicon layers. The additional gate control provides better control of the channel region. Therefore, this new device with three-layered channel resulted in 59.6% enrichment in drain current for 22nm channel length, in comparison to 45nm channel length with minimum leakage current.
Hosting Capacity Assessment of Electric Vehicles Integration in Active Distribution System
Authors: Rout Sagarika , Biswal GyanRanjan
Published: May 2020

The current article aims to assess the effects of electric vehicles (EV) integration in distribution networks, considering the initial state of charge (SOC) and charging level type. The increase engrossment for the incorporation of larger numbers of EVs in low voltage (LV) networks causes a significant overload and voltage fluctuation in the system because of the synchronization condition of domestic load peak time and EV charging time. The effect on the system is analyzed by determining the total hosting strength of the LV active network for a different level of EV penetration. Two different Load model for slow and fast charging EV is considered along with an initial state of charge (SOC) condition. The hosting capacity is affected not only by the penetration level of EV but rather; it also depends upon SOC condition and type of charger. Moreover, the methodology is proficient enough to give sufficient and reliable information so as to flexible for the control in real time scenario in the smart grid execution.
SysML Based Modelling of Gear Shifting Strategy and Drivability for Automatic Transmission
Authors: Kumar Ankush , Dhanwate Sachin
Published: May 2020

In this project SysML modelling of gear shifting strategy and drivability are done for the development of the transmission control system. Gear shifting is the complex system operation and drivability is also important for driving pleasure. The work starts by developing system functions to capture system-level requirements such as grade compensator, hot mode manager, shift scheduler, torque converter state selection, transmission speed calculator, manual mode manager, etc. The next phase includes designing and developing structure models, behavioural models, and the analysis of system requirements. Thus, the functionality of the design patterns is verified in the earlier stage of the product development life cycle.
Magnifying Steadiness & Conducting Examination of PMSM with SVPWM and PI Controller
Authors: Kumar Singh Nitesh , Agarwal Anshul , Kanumuri Tirupathiraju
Published: May 2020

A new method to improve the strength of permanent magnet synchronous machine (PMSM) is proposed in this manuscript. It utilizes the principal of space vector pulse width modulation (SVPWM) & proportional integral control (PI). The SVPWM allows the motor to have a high voltage with low harmonic distortion than the typical sinusoidal pulse width modulation. The control technique which is used in this paper is the voltage-frequency control process which depends on space vector pulse width modulation. The triggering pulses of space vector pulse width modulation inverter which is been given to the motor enables the motor to have a bigger torque at high speeds & elevated efficiency. It also increases the use of DC link voltage & low output harmonic distortion than the typical sine pulse width modulation inverter. The suggested permanent magnet synchronous machine module that involves a field-oriented control method not only links torque & flux, but also facilitates control allocation. Finally investigation of the suggested model is examined and its results are been validated by the simulation.
A Statistical Study on the Emotional Intelligence of B.Tech Students of NIT Hamirpur
Authors: Garg Arpan , Agrawal Prachi , Ganesh Talari
Published: May 2020

Emotions intelligence (EI) is the ability to recognize, implement, understand, and control emotions in definite way to reduce stress, make interaction effectively, overwhelmed challenges, and defusing conflict. The ideology behind entire perspective is that the students will develop themselves into what they are capable of becoming, provided we make them aware about emotional intelligence and the institute environment and parents create the appropriate circumstances for the development of intelligence. This study is not proposed to determine whether individual student becomes effective or ineffective. It is about examine the connections and interconnection between emotional intelligence and its component determinants along with understanding and level of responsibility in communication. It is also about formulating emotional intelligence radars and ladders to facilitate competency development. A survey was carried out, which consists of a sample researches in linkage to the gathering of data by setting up a questionnaire and structured involvement with various variables to identify design of associations. Descriptive analysis is deployed to derive meaningful and substantive conclusions and it indicates that the addressed sample was accurate and the different objects developed are significant for the performance measures. Further, the data obtained from the survey is put through statistical analysis utilizing statistical calculating package IBM SPSS Statistics. This study follows the relational model of database systems development that organizes and represents data in the form of tables and relations.
Using Machine Vision to Improve the Efficiency of Lumber Mills
Authors: Kunickaya Ol’ga , Burmistrova Olga , Hertz Edward , Ivanov Viktor , Nazarova Inessa , Tanyukevich Vadim , Semenyutina Alexandra , Sidorov Mikhail , Fedorova Paraskovia , Ohlopkova Marfa
Published: May 2020

This work provides rationale for the implementation of a machine vision-based approach for promoting timber processing efficiency. With efforts to combat the climate change, criteria for the success of wood industries shifted. Now, they need to ensure economic efficiency while taking the reduction in carbon intensity into account. This may be achieved in either of two ways, through the improvement of energy efficiency in production and by minimizing waste. So far, the traditional methods for the improvement of timber processing efficiency became obsolete. Hence, using advances in electronic engineering and machine vision may be viewed as a promising step.
Creation and experimental verification of a mathematical model of industrial debarking
Authors: Grigorev Igor V. , Leonova Olga N. , Kalyashov Vitalii A. , Shvetsova Viktoria V.
Published: May 2020

In the context of more intensive use of forest biomass, efforts to combat global climate change, the desire for more rational use of wood and an increase in surplus value in wood products, it can be assumed that primary woodworking processes require optimization. The aim of this work is the creation and experimental verification of a mathematical model of rational debarking of a log. The proposed mathematical model is based on a semi-empirical theory of fracture mechanics, the conclusions of which the authors optimize for the task of separating bark from wood during industrial debarking. During the experiments, a specially created installation was used. The results of experimental studies showed good quantitative and qualitative coincidences with the study results of the developed mathematical model. Thus, the developed model allows evaluating, at the stage of theoretical research, one of the main parameters of group debarking of timber. Namely, the time of timber processing taking into account the structural elements of the drum, parameters of pulpwood, their properties and temperature.
Clustering based Multi-modality Medical Image Fusion
Authors: Dhaundiyal Rashmi , Tripathi Amrendra , Joshi Kapil , Diwakar Manoj , Singh Prabhishek
Published: May 2020

The unwanted data obtained through the medical image fusion is the main problem in biomedical applications, guided-image surgical and radiology. The Stationary Wavelet Transform (SWT) denoted the various advantages over conventional representation of imaging approach. In this research article we introduced innovative multi-modality fusion technique for medical image fusion based upon the SWT. In our approach it disintegrates of source images into approximation layers (coarse layer) and detail layers through the Stationary Wavelet Transform scheme, then applying of the Fuzzy Local Information C-means Clustering (FLICM) and Local contrast fusion approach to overcome the blurring effect, sensitiveness and conserve the quality evaluation in the distinguish layers. The demonstration shows that it preserves more detailed information in the source images and it enhances the more quality features and edge preserved of the final fused image obtained through the reconstruction procedure by recursive initial steps. The different methodologies with other techniques to evaluate performance such as mutual information, edge based similarity and blind image quality. This shows that in both the objective and subjective analysis our methodology results attained more supercilious performance.
FPGA based Design of Dynamic Traffic Signal and Traffic Breach Control System
Authors: Gaur Aditya , Kumar Sujit , Kushwaha Deeksha , Sharma Anushka , Preet Singh Amar
Published: May 2020

A traffic signal system established due to the congestion of vehicles at road intersections. Traffic choking at road convergence becomes a controversy for daily riders and proportionally allowing the violation of traffic rules or other hazards. The conventional traffic signal system has lots of disadvantages. Even the system is automatic but due to fixed time range it gives rise to other problem like traffic violation, air pollution indirectly this would lead to deceitful affair. The signal system has been executed using different types of controller some have fast execution time, a greater number of inputs and outputs, reliability also plays an important role in traffic signal system design. To overcome such issues, we proposed a design in this paper which works on the compactness of vehicles on traffic signals and also detects the traffic signal breach done by the vehicles. This paper shows the simulation of dynamic traffic signal and traffic breach control system with IR sensor or piezo sensor to detect the density of vehicles and traffic breach or jumping of red light. This paper related with an FPGA controller as a VLSI design using Verilog in Xilinx software.
Artificial Neural Network Based Optimum Scheduling and Management of Forecasting Municipal Solid Waste Generation – Case Study: Greater Noida in Uttar Pradesh (India)
Authors: Kumar Sujit , Gaur Aditya , Kamal Neel , Pathak Mohit , Shrinivas Kumar , Singh Priyanshu
Published: May 2020

Precise forecast of municipal strong waste era has a critical part in future arranging and squander management framework. The attributes of the created strong waste are distinctive at better places (region to district or nation to nation). The precise forecast of municipal solid waste (MSW) era turns into an essential errand in present day period. Its prediction requires accurate MSW data. The point of the present review is to outline the time series model for foreseeing month to month based strong waste production in Greater Noida city of Uttar Pradesh State (India) utilizing artificial neural network (ANN) with time series autoregressive method. The gathered municipal waste perceptions have been organized month to month from 2012 to 2016. The 60 months data set has been classified into 42 training data sets, 9 testing data sets and 9 validating data sets. An assortment of models of ANN has been examined by altering the number of hidden layer neurons. Ultimately, paramount enhanced architecture of neural network is established. The least value of performance parameters is validated in the proposed model as mean square error 0.0004, root mean square error 0.0203 and the high value of the coefficient of regression 0.8123. On the premise of these execution parameters it is reasoned that the ANN model provides precise prescient outcomes.
Optimal Power Flow Solution with Nature Inspired Antlion Meta-Heuristic Algorithm
Authors: Tiwari Sukriti , Vaddi Narendrababu , Bhatlu Metta Sridhar , Kumar Manish
Published: May 2020

Currently, optimal power flow (OPF) problem is widely encountered issue. This has been formulated and programmed with the help of nature-inspired meta-heuristic approach known as Antlion Optimization algorithm (ALO) in this work. The algorithm is built upon the basic hunting procedure of antlions. The antlions hunting behavior is summarized into prominent set of steps like random walks, trap building to clasp ants, catching ants, and five pit reorganizations. This behavior is then exploited to resolve OPF problem. The ALO technique has shown higher convergence characteristics with the help of the Roulette Wheel selection. A typical system of IEEE 30 bus has been considered for validating the proposed method. Moreover, with suitable OPF formulation, numerous objectives could be solved. Some of which have been taken into account here. The results of ALO are studied and their effectiveness is compared with the OPF algorithms like Particle Swarm Optimization (PSO) method and Black Hole-Based Optimization (BHBO) method. The results demonstrate the usefulness of ALO with the improved convergence for OPF problem based on the population of 40 when compared to nature-inspired techniques like PSO and BHBO.
Fabrication of Hybrid Bicycle for Minimizing Pollutant Emissions
Authors: Joshi Tanuj , Sharma Ravikant , Kumar Mittal Vinod , Gupta Vikas , Parkash Om
Published: May 2020

Hybrid power framework dependent on sustainable power sources i.e. particularly regenerative and solar energy. They are a successful choice to take care of the power-supply issue for motor. This paper exhibits an examination and plan of a hybrid bicycle framework for every day needs of little separation travel. The Hybrid Bicycle Framework utilizes two sustainable power hotspots for enhancing the framework effectiveness. The two sustainable power sources are Dynamo and sunlight based solar energy. Power produces by these two sources utilizes for charging the battery. Alternative Current (AC) adopter can likewise be used for charging the battery. A motor that drives the back-tyre fits over it and powered by the battery. This paper worries over the similar investigation of over three charging strategies. In present work we studied the battery charging timing at Ideal condition and at practical running conditions and presented with the help of the table and graph. In future work, further innovation is still required for enhancing and expanding the efficiency of charging.
Dielectric properties of low-density polyethylene based nickel ferrite and copper ferrite
Authors: Vaid Kriti , Kumar Dwivedi Umesh , Rathore Deepshikha
Published: May 2020

Nickel and Copper ferrite of different compositions have been synthesized by wet co-precipitation technique. The synthesized samples were annealed at 800ºC for 4 hours and characterized by X-Ray Diffraction (XRD) analysis. The XRD pattern confirms the formation of a cubic structure with the crystalline size for nickel ferrite 23nm and copper ferrite 37nm. The composite has been synthesized with the various compositions (10wt% and 30wt%) of nickel ferrite and copper ferrite with pH values 6, 8 and 10 in LDPE. The Scanning Electron Microscopy (SEM) and Energy-dispersive X-ray spectrum (EDAX) confirms the homogeneous mixing of the composite material. The dielectric measurement has been carried out as a function of frequency at room temperature in the range of 1Hz-8MHz. The dielectric behaviour of Nickel ferrite and Copper ferrite based LDPE composite results decrease in dielectric constant and dielectric loss factor with the increase in frequency.
Mathematical Modelling in Problem Solving
Authors: Hartono Y
Published: May 2020

This paper is a literature review on problem solving and mathematical modelling. The steps of mathematical modelling are compared with the stages of problem solving. As a result, it was concluded that modelling is part of problem solving.

Problem solving is the heart of mathematics

Alan H. Schoenfeld, Foreword [1]
Statistical reasoning of prospective teachers through blended learning
Authors: Rohana  , Ningsih Y L
Published: May 2020

Blended learning is a learning model that combines face-to-face learning in classroom with on line learning. This research is a descriptive study that aims to describe the ability of statistical reasoning of prospective teachers through the Blended Learning models. The subjects in this study were 40 students of second year of Mathematics Education Department at Universitas PGRI Palembang in Academic Year 2018/2019. Data collected through written tests and interviews. The test aims to reveal the statistical reasoning of prospective teacher students. The interview aims to explore further about students’ statistical reasoning through Blended learning. The results showed that the statistical reasoning of prospective teachers after applying Blended Learning was included in the good category.
Learning higher-order thinking skills using problem-based learning model
Authors: Tama N S , Aisyah N , Santoso B , Kurniadi E
Published: May 2020

This research is a descriptive qualitative research to describe student activities during learning by applying Problem-based learning model and students’ higher-order thinking skills after applying higher-order thinking skills based learning using problem based learning (PBL) model on the two-variable linear equation system topic. The study was conducted at a Junior High School in Palembang, with research subjects totaling six students in class VIII3. The learning process was adjusted to the phases of the Problem-based learning model. The researcher uses higher-order thinking skills questions on students’ worksheets and test questions. Data collection techniques in this study used observation sheets, test results, and interview results. The results of this study indicate that the dominant student activity arises is discussing with the group in planning problem solving strategies, listening to exemples of problems given and solving problems that exist on the student worksheets using problem solving strategies that have been discussed as well as dominant higher-order thinking skills emerge is analytical skills.
Development of an android-based math equation editor
Authors: Nuraeni Z , Rosyid A , Mahpudin A , Suparman  , Andriyani
Published: May 2020

The long-term goal of this research is to develop Android-based learning as an alternative to mathematics learning. Meanwhile, the specific objective to be achieved in this research is to examine the effect of Mathematics learning media in the form of an Android-based Math Equation Editor on student achievement in high school. This research is a Research and Development (R&D) research. There are 8 stages in this study, namely (1) Potential and problems, (2) Data collection, (3) Product design, (4) Design validation, (5) Design revision, (6) Product testing, (7) Design revision, and (8) Trial usage. The conclusions obtained from the development of the Android-based Mathematical Equation Editor as an exponential learning media are valid, practical and effective. The conclusions of this study are: (1) Android-based Math Equation Editor Products are valid, practical and effective. Its validity can be seen from the results of the validator assessment analysis of the Mathematics learning media in the form of an Android-based Math Equation Editor obtained by Pearson correlation of 0.322; (2) Its practicality is seen from the results of user assessment analysis through limited trials of Mathematics Equation Editor-shaped learning media in the form of Android which shows an average score of 3.958 with practical criteria; (3) Its effectiveness is seen from the results of the analysis of student assessments through field trials of Mathematics Equation Editor-shaped learning media based on Android can improve student mathematics learning achievement in Mathematic.
Learning Design of Proportion Using Tangram Context
Authors: Andinasari  , Jayanti  , Wasiran Y
Published: May 2020

The aim of the study was to produce a design research method that aims to produce learning trajectories on comparative material based on the Indonesian Realistic Mathematics Approach. Design research through three stages, namely preliminary design, teaching experiment, and retrospective analysis was chosen to achieve the research objectives by designing hypothetical learning trajectory. This alleged learning trajectory was tested on 32 students in grade VII of SMP 30 Palembang. The instruments used in this study were recording devices, written test sheets; field notes sheets and questionnaire sheets. The results showed that a series of activities provided were able to stimulate informal knowledge and explore students’ prerequisite knowledge as a bridge in understanding the comparison of values and turning values. The activity of drawing parts of objects to be intact stimulates students to the knowledge of comparative concepts and to the context of tangram problems students are able to model and represent problems. Furthermore, strategies used by students gradually developed into more formal mathematics where the area model was used as a model of the comparative situation of the tangram and a model for more formal reasoning such as a comparison strategy, in dividing the tangram image, as well as the multiplication of comparisons of values and turns value in solving the problem of completion of a job in the installation of tile / marble floor of the house.
Students’ worksheet in number multiplication learning using lined-up context in the second grade
Authors: Permatasari S W , Darmawijoyo
Published: May 2020

The aim of this study is to produce Students’ Worksheet in Multiplication Learning using lined-up contexts with Indonesia’s Realistic Mathematics Education (PMRI) approach that is valid, practical and has a potential effect. This research was a development research using Design Research with Development Study type. This research went through 2 stages, namely the Preliminary stage consisted of analysis, design, and the formative evaluation stage consisted of self evaluation, expert review, one to one, small group, and field tests. Worksheet prototype I is review in stage of expert review and one to one then become prototype II. Worksheet prototype II is review in small group. Finally worksheet is ready to test the students in stage field test. The results of students’ worksheet had valid, practical characteristics, and had a potential effect in multiplication learning.
The impact of using function derivative teaching material based on APOS theory towards students’ learning interest
Authors: Samosir S , Darmawijoyo  , Hartono Y
Published: May 2020

This study aims to describe students’ interest in learning using functional materials based on the APOS Theory assisted by Geogebra. The research method used is qualitative type descriptive. The subjects of this study were students of the eleventh graders of Natural Science Study Program of SMAN 2 Palembang (The State Senior High School). Data collection was carried out by distributing questionnaires and interviews to find out the impact of the use of teaching materials on student interest in learning and tests to determine the impact of teaching materials on student learning outcomes. All data collected was analysed descriptively.
Learning function using a thermometer
Authors: Noveawan  , Zulkardi  , Hapizah
Published: May 2020

This research aimed to produce a learning trajectory that can help students in 8th grade in learning functions. The learning approach used in this study was PMRI approach by using the context of the thermometer. This research used design research through three stages: preparing for the experiment, the design of experiments, and the retrospective analysis. Data collection techniques used were interviews, video footage and photographs, written tests, and field notes. The study involved six students in the 8th grade, which were composed of students with high, medium and low of capability in the first cycle, and involved 20 students in second cycle. The research conducted to produce learning trajectories which consists of a series of learning activity in the process. The results of this study are to produce a learning path consisting of exploring the context of the thermometer, presenting functions, determining (domains, codomains and ranges), finding function formulas and function values, and being able to solve the function problems.
The Ability of cadets to solve trigonometry routine and non-routine problems
Authors: Anggraini R , Putra E S
Published: May 2020

This research is a qualitative research, which is describe the ability of cadets to solve routine and non-routine problems of trigonometry material in applied mathematics subject. Competence of learning achievement in applied mathematics course required cadets to be able to solve mathematical problems related to trigonometry. An analysis of this ability was needed as an illustration of lecturers in developing lesson plan which is more effective and efficient. The population of this study was cadets of the ship engineering study program academic year 2018/2019 and the sample of study was three cadets chosen by random. The technique of collecting the data by using the results test of the cadets. The results of the study shown that the ability of cadets to understand problem and apply the concepts to solve routine problem was good, although not all of the information was written in their answers. The cadets’ ability to compile and carry out a plan of routine problems was quite good, even though they immediately wrote the formula to solve the problem.The ability of cadets to understand non-routine problem was not good, due to, cadets have not been able to know the additional information that must be extracted from the problem.
Student’s triangles congruence proving through flow proof strategy
Authors: Sumarni  , Hapizah  , Scristia
Published: May 2020

The purpose of this study is to describe students proving congruence triangles. Proving congruence is a prerequisite to develop skills in constructing formal proof in mathematics. The subject in this study are 33 students of SMP Negeri 33 grade IX.1. The Learning process implemented with flow proof strategy, namely re-writing existed information, stating what is needed to be proved, using existed rules such as postulate and definition, and writing the consequence from used rules. Data were collected by a test with three questions and interviews. The results show that students know step by step in writing the proofs after the implementation of flow proof strategy and students’ ability on congruence proving in class nine SMP N 33 Palembang categorized satisfactory, with 4% of the students categorized as excellent, 16% in good, 48% in satisfactory, 24% in poor, and 8% in very poor category. Generally, students’ obstacle in proving is in determining rules that will be applied for constructing a proof and not understand what is to be proof. Other error in proving is writing symbols.
The development of HOTs problems on probability and statistics for middle school
Authors: Ansari A , Somakim  , Darmawijoyo  , Eliyati N
Published: May 2020

The lack of using high-level thinking questions (HOTs) in schools requires Indonesian students to be less successful in solving problems that demand that ability. To improve the quality of education, the government revised the curriculum which in its development refers to one of the aspects that must be raised in the learning process is HOTs. This research aims to produce valid and practical as material for student’s training and see the potential effects of these questions on students’ mathematical literacy abilities. This study uses the design research method for the type of development study with eighth-grade students of SMP Negeri 1 Palembang as the subject of the research. The results of the study showed that the HOTS problem developed discussed material aspects, constructs, and languages that were declared valid and practical and were feasible to use.
The reciprocal teaching model as the latest solution to improve students’ mathematical representation ability
Authors: Retta A M , Nopriyanti T D
Published: May 2020

This study aims to examine the improvement in students’ mathematical representation (KRM) after the application of the reciprocal teaching (RT) model. The RT learning model is a group learning process which in its implementation uses four strategies namely 1) concluding, 2) making questions, 3) clarifying, and 4) predicting. This study uses a quasi-experimental method with a non-equivalent pretest and posttest control group design. The subjects of this study were students of mathematics education study programs at Universitas PGRI Palembang academic year 2018-2019. This type of research is quantitative research in which the data were taken in the form of pretest and posttest data whose results show that there is an increase after the implementation of the RT model for student KRM. It can be seen from the n-gain test that gets RT learning models by 0.3 while those who get conventional learning are 0.2. Furthermore, a t-test was performed to see whether it was significant or not, it was found that t-count < t-table so that H0 was rejected, which means there was no significant increase in measuring student KRM.
The development of math model student worksheet using transportation context of one variable linear inequality
Authors: Anastasya Y , Darmawijoyo
Published: May 2020

This study aims to produce the student worksheets based on learning Mathematics modeling using a valid and practical transport context on one variable linear inequality material for class VII students, and can Aware of the potential effects of learners' mathematical perception of the development of the student worksheet based on mathematical modeling learning using the transport context of a single variable linear matter in class VII. The type of research used is the ADDIE model development method. This method consists of Analysis, design, Development, Implementation, and evaluation. The evaluation stage used is formative evaluation, namely: expert review, one to one, small group, and field test. The subject of this study was the students of grade VII at 33 Palembang State Junior High School year 2019/2020 which amounted to 28 people. Data collection techniques with walkthroughs, observations, interviews, and polls. The results of this research are the student worksheet based learning Mathematics modeling using the context of valid and practical transport and learning using the student worksheet developed to have a potential effect on participants' mathematical perception Students.
Designing creative problem solving-based student worksheet for higher order thinking skills
Authors: Sinta B , Hartono Y , Indaryanti  , Scristia  , Yusup M
Published: May 2020

This research is descriptive research. The purpose of this study is to produce a Higher Order Thinking Skills (HOTS) design as a creative form of high school students in class XI. In this study, the analysis was carried out first, namely the analysis of students, curriculum analysis, material analysis, analysis of higher-order thinking skills and analysis of creative problem solving and design according to the results of these analyses. The results of this study use the student worksheet design of high thinking ability using the steps of Creative Problem Solving namely problem clarification, brainstorming, evaluation and selection, and implementation.
Students’ high-level thinking skills in creative problem solving learning model
Authors: Selvia N , Hartono Y , Indaryanti  , Scristia  , Yusup M
Published: May 2020

This research is a quantitative research. This study aims to look at students’ higher order thinking skills to solve linear equations after learning with creative problem solving models is given. The subjects of this study were the XI grade students of SMA N 5 Palembang. The data collection technique used was a test in the form of a description consisting of three questions. Based on data analysis that students’ high-level thinking skills in learning linear equations are categorized low.
Probing prompting in symbolization
Authors: Alyawati D , Susanti E , Sari N , Sukmaningthias N
Published: May 2020

This study was conducted as descriptive research which purposed to find out mathematical thinking aspects of symbolization of the first secondary school through probing prompting learning strategy. The subject of this study were 6 students of class VIII.1 in junior high school. The learning proses was taken place by steps and probing prompting learning strategy. The data was collected by using test and interview which was analyzed qualitatively. The result of this study indicates that student 1 was able to bring up both indicators of symbolization, but the ability algebraic operation was still erroneous. Student 2 can bring up the indicator of symbol manipulation.
Blended learning with schoology in learning macromedia flash-based instructional media
Authors: Sari N , Fitriasari P , Octaria D
Published: May 2020

Macromedia Flash, one of ICT program, is an animation program that can be explored to design instructional media. However, time allocation in the class is not sufficient to facilitate students for understanding how to design and work with Macromedia Flash. Blended learning is carried out to facilitate student learning in the classroom and online class. Online class is using Schoology as learning platform so that students can learn anytime and anywhere. This study aims to describe how the process of blended learning using Schoology in teaching Macromedia Flash-based instructional media for mathematics education students of Universitas PGRI Palembang and how students’ responses. Qualitative and quantitative descriptive research method is used. Data was analyzed from documentation, questionnaire, and interviewing. The results show that blended learning using Schoology can be employed by students to learn, practice, and discuss material of Macromedia Flash-based instructional media from inside and outside class. It also facilitated students to collect their task. Most of students can produce Macromedia Flash-based instructional creatively. Students give very good response to the implementation of blended learning using Schoology about 82.19%.
In-service teachers’ mathematical problem solving skills
Authors: Hiltrimartin C , Hartono Y , Indaryanti
Published: May 2020

This study aims to describe the problem-solving skills of in-service teachers. The background of this study is because teachers are less concerned with developing problem-solving skills and rarely gave problem-solving problems. The research method used is a qualitative method. The research subject are the in-service teacher. The data collected with the test technique, in the form of a problem-solving item. The results showed that the ability of teachers in large solutions is still lacking because teachers still have difficulty.
Problem-based learning for measuring representation ability
Authors: Wahyuni E D , Susanti E , Sari N , Simarmata R H
Published: May 2020

The research is descriptive qualitative which aims to describe mathematical representation ability of students in class 11 with problem-based learning models on geometric sequences and series. The instruments used in this study were students’ worksheets, test questions, lesson plans, and teaching materials. In this research, it can be concluded that mathematical representation ability of students through the learning with Problem Based Learning (PBL) method comes up. The students do all the aspects of mathematical representation, which are the visual representation, numeric representation, symbolic representation, and algebraic representation. The dominant parts which appear are the visual representation, symbolic representation, and algebraic representation. The mathematical representation ability which rarely shows is the numeric representation. It also means that the form of the question also affects students in deciding what mathematical representation aspect to be used.
Development of student worksheets based on problem-based learning in the algebra topics
Authors: Santoso B , Coaline A C , Scristia  , Araiku J
Published: May 2020

This research uses design research type development study method which aims to develop worksheets based on problem based learning algebraic operating materials that are valid and practical. This study focuses on 2 stages, namely the preliminary stage and formative evaluation which includes self-evaluation, one-to-one, small group. The research subjects were 7th grade students in junior high school in developing. The results of this research are valid and practical problem-based student worksheets. Validity can be seen from the results of expert assessments and one-to-one stages. Practicality can be seen from students’ skills when understanding and completing student worksheets at the small group stage.
On how students read mathematics textbook and their view on mathematics
Authors: Oktariani D , Sari T I , Saputri N W , Darmawijoyo
Published: May 2020

The aimed of this paper is to investigate the correlation between reading stages on mathematics textbook and students’ view of mathematics through reading textbook. A questionnaire survey and interview were administered to secondary 3 students at SIS Palembang. The data shows that there are three different type of stages on reading mathematics textbook such as Type 1; defined by (1) Read the definition and/or rules; (2) Get into worked example; (3) Do the exercise; Type 2; defined by (2) Get into worked example;(1) Read the definition and/or rules; (3) Do the exercise; Type 3; defined by (3) Do the exercise (1) Read the definition and/or rules; (2) Get into worked example. The finding result shows that there are correlation between types of reading stages and the student’s view on mathematics. The correlation is influenced by reading objectives, student’s prior knowledge and student’s perspective.
The modified branch and bound algorithm and dotted board model for triangular shape items
Authors: Octarina S , Janna M , Cahyono E S , Bangun P B J , Hanum L
Published: May 2020

Cutting Stock Problem (CSP) is a problem of cutting stocks into items with certain cutting rules. This study used the data where the rectangular stocks were cut into triangular shape items with various order sizes. This study used the Modified Branch and Bound Algorithm (MBBA) to determine the optimal cutting pattern then formulated it into a Dotted Board model. Based on the results, it showed that the MBBA produced three optimal cutting patterns, which used 6 times, 8 times, and 4 times respectively to fulfill the consumer demand. Then the cutting patterns were formulated into the Dotted Board model. Minimum trim loss of the three models are 1,774 cm
2, 1,720 cm
2dan 980 cm
2.