bluuebunny/crossref_metadata_2025_split huggingface dataset:
Use of ladder snake media in improving student learning outcomes in mathematics learning in elementary school
Authors: Saputra Dudu Suhandi , Yuliati Yuyu , Rachmadtullah Reza 
Published: November 2019

Abstract
This research is motivated by the low student learning outcomes in mathematics learning. This study aims to improve student learning outcomes in class V Kancana State Elementary School by using Snake Ladder learning media. The research method used by the researcher was a classroom action research which collaborated with the fifth-grade teachers of Kancana Elementary School, with a total of 21 students in class V consisting of 6 male students and 15 female students. This research takes place in 3 cycles, each cycle consists of 3 actions. The techniques used in data collection are observation, tests, interviews, documentation, and field notes. The results showed that the use of snakes and ladder learning media could improve student learning outcomes in mathematics learning in class V of Kancana Elementary School.
Integrating Technology And Media In Learning Process
Authors: Sudarsana I Ketut , Mulyaningsih Indrya , Kurniasih Nuning , Haimah  , Wulandari Yunita Oktavia , Ramon Herdi , Satria Erwinsyah , Saddhono Kundharu , Nasution Fauziah , Abdullah Dahlan 
Published: November 2019

Abstract
When identifying the learning strategies to be used, the teacher must choose two types of teacher-centered strategies or student-centered strategies. The selection of this strategy is closely related to the integration of technology and media in a learning process. Specifically this integration becomes the presentation of a concept by displaying a video or reading a story, or showing how to conjure up a verb. The student-centered strategy is an activity that involves students in active learning, while the teacher’s position is more on the facilitator who will ensure that the learning objectives will be achieved. Integrating technology and media in a learning process will provide convenience and benefits not only to teachers but also students. Both teachers and students will be facilitated in learning that involves reading, writing, listening and listening to a material. Improving the quality of learning outcomes resulting from integrating technology and media will provide color for the development of Indonesia’s human resources in the future.
The Implementation of Backtracking Algorithm on Crossword Puzzle Games Based on Android
Authors: Nurdin  , Azhar Rizki , Abdullah Dahlan , Erliana Cut Ita , Nurdiawan Odi , Dikananda Arif Rinaldi , Rinaldi Ade Rizki , Sudrajat Dadang , Susanti Elva , Hasibuan Abdurrozzaq , Yuliwati  , Rahman Arief Aulia , Sudarsana I Ketut 
Published: November 2019

Abstract
The development of smartphones at this time is improving very fast and rapidly can affects to the renewal of all applications in the smartphone. At this time we can do anything with a smartphone in hand. In other hand smartphone also can reduce the saturation and boredom of many games made for smartphones. One of example is the crossword game application. Filling or playing crossword puzzles turns out many benefits, in addition to increasing the freshness of the mind from routine activities, this game can also add to our insight in various things, such as vocabulary, various important terms and popular words we often find in filling out cross-breeding. The backtracking algorithm is used to determine the exact steps to be taken in completing the crossword puzzle game. By using the backtracking algorithm, it is can expected the completion of the crossword puzzle game so this game can be more easily to solved. The system is built using Java with the ADT IDE for Eclipse as a programming language. The result of this final project is an application of a crossword puzzle game about the term computer and informatics that can give correct answers automatically.
Utilization of Local Fly Ash for Producing Self-Compacting Concrete
Authors: Alkhaly Yulius Rief , Ihsan M. Kabir 
Published: November 2019

Abstract
Self-compacting concrete (SCC) mixture is an innovation that aimed to ease concrete casting due to its characteristic can be compacted by self-weight without compacting or vibrating. The original SCC mixture which first developed by Okamura contains silica fume (SF) as supplementary material. In this study, fly ash (FA) was used as supplementary cementitious material for SF substitute. The variation of FA used in the mixtures of SCC concrete was 10%, 15%, and 20% by cement weight. For all variations of FA, the results of fresh concrete tests obtained workability that satisfactory to the SCC criteria for the slump flow, V-funnel, and L-shaped box tests. Furthermore, the results of hardened concrete tests achieved the compressive strength ranging from 40 to 46 MPa. These results indicate that local Aceh FA originating from Nagan Raya can be used as supplementary cementitious material to produce SCC with the compressive strength lay in high strength concrete categories.
The Empty Palm Oil Fruit Bunch as the Potential Source of Biomass in Furfural Production in Indonesia: Preliminary Process Design and Environmental Perspective
Authors: Majesty K I , Herdiansyah H 
Published: November 2019

Abstract
Empty Palm Oil Fruit Bunches (EPOFB) is a residual biomass from Palm Oil Industry (POI), which known to be produced in large quantity in Indonesia every year. EPOFB is now regarded as a potential feedstock to produce a variety of renewable and valuable biofuel and bio-based chemicals that can be derived from sugar, cellulose, and lignocelluloses, including furfural. Furfural is a bio-based chemical that can be obtained from cellulose that is contained within empty palm oil fruit bunches (EPOFB). Furfural can be used as a platform chemical for the production of a wide range of value-added products, such as the fuel additive methyltetrahydrofuran (MTHF), which is a more environmentally friendly alternative anti-knocking agent compared to lead. However, furfural has never reached commercial use in any significant volume because its industrial development was relatively slow due to the low yield is obtained in the process. This study will explain the potential of waste biomass as EPOFB that can be obtained from palm oil industry in Indonesia. This study will also decide the biorefinery technology design that is applicable in Indonesia to process to be used to convert cellulose and lignocelluloses from EPOFB to furfural; which contains three main stages: separation of the biomass, hydrolysis, and purification process. The process simulation results in 26.58% of distilled furfural from 50 ton/day EPOFB as the basis.
Conflict of Jakarta Bay Reclamation: Government Knowledge and Respond
Authors: Faiqotul Mutia Elok , Herdiansyah Herdis , Haryanto Joko Tri 
Published: November 2019

Abstract
The reclamation of Jakarta Bay is a main debate issue in late few years. Some central and provincial government institutions take different stances on the issue. This research tries to find out, why institution have different stances. This research uses a mix-method approach which is quantitative and qualitative. Data is obtained from in-depth interviews to stakeholders who are 3 experts from central government and 3 experts from provincial government. Furthermore, the data analysis is conducted with AHP to find out knowledge of 6 experts about what for reclamation is. AHP also find out, what they respond, pro or cons in conflict of Jakarta Baya reclamation. The results of the analysis from the central government show that the knowledge of experts seen Jakarta Bay Reclamation as social and environment issue (42.7%) and they choose to cons-reclamation (75.7%) for the respond. While the provincial government indicates that the knowledge of Jakarta Bay Reclamation is about Economical Issue (54.8%) and choose pro-reclamation (85.7%) because it will have a positive impact. This different perception becomes an obstacle in resolving the Jakarta Bay reclamation conflict.
The occurrence, size and geometry of geothermal resources in volcanic terrains
Authors: Waibel Albert F. 
Published: November 2019

Abstract
Volcanic terrains in general, and arc volcanic belts in particular, have been prime geothermal exploration targets as far back as the first geothermal power generation at Larderello, Italy, in 1904. The popularity of this terrain for geothermal exploration and development is based on the concept of young shallow magma bodies providing an abundance of shallow crustal heat and also on the presence of hot springs and fumaroles observed within these terrains. The success in developing these geothermal resources ranges from spectacular (e.g. Japan, Philippines, Indonesia, New Zealand, Italy, Iceland) to disappointing (e.g. Cascade Range of northwestern North America). The types, shapes and geometries of geothermal resources in volcanic terrain range in size from large broad three-dimensional fractured stockwork systems to narrow geothermal cell conduits. Effective and economic exploration and development of these resources is greatly improved by understanding the varying sizes and geometries of these resources and matching the exploration strategy design specifically for each exploration target rather than applying a single exploration formula and data interpretation model to all settings. Information from the mining industry provides valuable insight into the range in geometry and size of these resources. This body of knowledge should be used by the geothermal community: (1) for more effectively designing exploration programs specific; (2) to each prospect to interpret the body of exploration data in terms of site-specific geology and tectonics; (3) to integrate basic risk management best practices into exploration and development programs.
Structure, substance and near-surface magmatic chambers of Mutnovsky and Gorely volcanoes (Mutnovsky geothermal region, Kamchatka). II. Mutnovsky volcano
Authors: Selyangin O B 
Published: November 2019

Abstract
Rocks structure and composition and the history of Mutnovsky volcano development which is one of the most favorable objects of geotechnical exploration according to the situation in the infrastructure of Kamchatka and high energy of modern gas-hydrothermal activity are described. Its latest volcanic activity, eruption mechanisms are discussed, the forecast of activity and morphostructural evolution of the volcano is given.
Structure, substance and near-surface magmatic chambers of Mutnovsky and Gorely volcanoes (Mutnovsky geothermal region, Kamchatka). IV. Magma evolution of Mutnovsky and Gorely volcanoes. Geological and energetic aspects
Authors: Selyangin O B 
Published: November 2019

Abstract
Serial belonging and features of rocks evolution of the South-Kamchatka volcanoes Mutnovsky and Gorely occupying different positions in the structure of cross petrochemical zonality of island arc system are discussed. Basalt-riodacite rocks series of the Mutnovsky volcano was formed as a result of differentiation of parent magma of high-aluminous tholeiite composition with rare mixture of its derivatives. The rocks of Gorely volcano with similar range of silica acidity have increased potassium alkalinity and belong to the transition type from tholeiite to calc-alkali. Magma mixture of different stages of differentiation played a significant role to form it. This phenomenon confinedness to specific stages of volcanic systems evolution allows to estimate general energetic orientation of their development, with the increase or decrease of the share of the best heat capacity basalt substance in the material composition erupted by them.
Synthesis and photoluminescence properties of Sm3+ doped LaOCl phosphor with reddish orange emission and it’s Judd- Ofelt analysis
Authors: Yashodha S R , Dhananjaya N , Manjunath C 
Published: November 2019

Abstract
Present paper reports the study on luminescence and optical behaviour of samarium doped lanthanum oxychloride (LaOCl:Sm3+) nanophosphor for their potentiality in display devices. The conventional solid state route was employed to synthesize the phosphor La1-xSmxOCl (x = 0, 0.01, 0.03, 0.05, 0.07 and 0.09). Tetragonal phase of the prepared compound was confirmed by PXRD. An agglomerated and spherical like structure were seen of the samples from FE-SEM analysis. The Wood and Tauc relation was employed to find out band gap energy and is around 4.23 eV. At an excitation wavelength of 408 nm, a high intense peak of emission was observed at 608 nm for transitions (4G5/2 → 6H7/2) of Sm3+ ions in the PL spectra. Colour co-ordinates (X̄,Ȳ) were used for the analysis of measured photoluminescence spectra. For the optimized concentration of Sm3+ (La1-xSmxOCl with x = 0.05), the intensity parameters (Ω2, Ω4 and Ω6)were determined. The trend of Ω6 > Ω4 > Ω2 was observed. An emission cross section and Branching ratio are found to be 3.98 × 10−22 cm2 and 59% respectively for 4G5/2 → 6H7/2 transition that makes it suitable for laser designs and application. The obtained results reveal that the LaOCl phosphor doped with samarium can be used on the screens of optical electronic systems and also is suitable for emission of reddish orange colour.
Study on the effect of lithium nitrate in ionic conduction properties based alginate biopolymer electrolytes
Authors: Fuzlin A F , Bakri N A , Sahraoui B , Samsudin A S 
Published: November 2019

Abstract
In this present work, the conduction properties of biopolymer electrolytes (BEs) based alginate incorporation with LiNO3 was studied. FTIR analysis showed there is complexation occurred when incorporation with LiNO3 via COO− group of alginate. The interaction between alginate and LiNO3 shown an improvement in ionic conductivity of BEs where was increased from 3.24 × 10–7 S cm−1 for un-doped sample and achieved optimum value at 1.14 × 10–4 S cm−1 for sample containing with 15 wt. % LiNO3. The prepared samples shown that it has thermally assisted when the temperature is increased and shown Arrhenius behavior. Deconvolution approached revealed that the present ionic conduction of BEs influenced by ionic mobility and diffusion coefficient.
Neutron Compton Scattering: from proton momentum distribution to muonium hyperfine coupling constant in the isopropyl radical
Authors: Krzystyniak Matthew , Pratt Francis , Romanelli Giovanni 
Published: November 2019

Abstract
We establish a fast and reliable benchmarking protocol for predictions of Muon Spin Resonance observables. To this end, we apply neutron Compton scattering (NCS) to study the nuclear momentum distributions of the proton and deuteron in the condensed phase of the isopropyl and d-isopropyl alcohols. By subtracting the time-of-flight NCS spectra of both compounds we demonstrate that the proton momentum distribution in the OH group of isopropanol and the deuteron momentum distribution in the OD group in d-isopropyl can be studied selectively. The site-selective application of the NCS method enables the calculation of the magnitude of the frequency isotope effect for the proton in OH along the hydrogen bond direction. By comparing the magnitude of the frequency isotope effect with values predicted for simple model potentials we are able to perform the appraisal of the degree of anharmonicity of the OH proton environment. Assuming that the effective potential felt by the OH proton along the hydrogen-bond direction can be satisfactorily described by the Morse potential, we are able to calculate its dissociation constant D and decay constant a. Finally, assuming that the same Morse potential describes the local binding of Muonium in the mioniated isopropyl radical, we are able to predict its width of momentum and position distributions and the kinetic and zero-point energy. Based on these results, we are able to provide a conservative bound for the magnitude of the isotope effect on the muonium hyperfine interaction without resorting to a complicated and computationally expensive methodology based on the application of path integrals.
Widespread Gene Flow Model Explains the Genetic–Morphological Variation in a Giant Water Bug Species Under Fine-Scale Spatial Sampling
Authors: Stefanello Fabiano , Menezes Rodolpho S T , Ribeiro José Ricardo I , Almeida Eduardo A B 
Published: November 2019

AbstractThe population dynamics of freshwater organisms are expected to be related to the connectivity among comparable streams, ponds, or rivers in a patchy habitat. Here, we investigated the population dynamics of the giant water bug, Belostoma angustum Lauck 1964 (Hemiptera: Belostomatidae), in a fine-scale spatial sampling, and evaluated which gene flow model previously described for freshwater organisms could explain the genetic–morphological variation in this species. For these purposes, we evaluated genetic and morphological variations, as well as the demographic history of this freshwater insect. Our genetic analyses showed a lack of geographical structure within B. angustum populations across the evaluated range, concordant with widespread gene flow model. Our findings of the demographic history of B. angustum suggest recent and rapid expansion beginning during the late Pleistocene after the Last Glacial Maximum. Likewise, we did not find geographically structured morphological variation in B. angustum, except for body size. The lack of structure of genetic–morphological variation in B. angustum could be explained by a stepping ponds system resulting in the widespread gene flow detected among populations of this species. The warmer and wetter climatic conditions after the last glacial period may have favored the demographic expansion of B. angustum populations due to the increasing of potential freshwater habitats and food resources. This favorable habitat probably allowed the stepping ponds dispersal mode resulting in the verified geographically unstructured genetic–morphological variation.
Plant carotenoid cleavage oxygenases: structure–function relationships and role in development and metabolism
Authors: Dhar Manoj Kumar , Mishra Sonal , Bhat Archana , Chib Sudha , Kaul Sanjana 
Published: November 2019

Abstract
A plant communicates within itself and with the outside world by deploying an array of agents that include several attractants by virtue of their color and smell. In this category, the contribution of ‘carotenoids and apocarotenoids’ is very significant. Apocarotenoids, the carotenoid-derived compounds, show wide representation among organisms. Their biosynthesis occurs by oxidative cleavage of carotenoids, a high-value reaction, mediated by carotenoid cleavage oxygenases or carotenoid cleavage dioxygenases (CCDs)—a family of non-heme iron enzymes. Structurally, this protein family displays wide diversity but is limited in its distribution among plants. Functionally, this protein family has been recognized to offer a role in phytohormones, volatiles and signal production. Further, their wide presence and clade-specific functional disparity demands a comprehensive account. This review focuses on the critical assessment of CCDs of higher plants, describing recent progress in their functional aspects and regulatory mechanisms, domain architecture, classification and localization. The work also highlights the relevant discussion for further exploration of this multi-prospective protein family for the betterment of its functional understanding and improvement of crops.
GTDB-Tk: a toolkit to classify genomes with the Genome Taxonomy Database
Authors: Chaumeil Pierre-Alain , Mussig Aaron J , Hugenholtz Philip , Parks Donovan H 
Published: November 2019

Abstract

Summary
The Genome Taxonomy Database Toolkit (GTDB-Tk) provides objective taxonomic assignments for bacterial and archaeal genomes based on the GTDB. GTDB-Tk is computationally efficient and able to classify thousands of draft genomes in parallel. Here we demonstrate the accuracy of the GTDB-Tk taxonomic assignments by evaluating its performance on a phylogenetically diverse set of 10 156 bacterial and archaeal metagenome-assembled genomes.

Availability and implementation
GTDB-Tk is implemented in Python and licenced under the GNU General Public Licence v3.0. Source code and documentation are available at: https://github.com/ecogenomics/gtdbtk.

Supplementary information
Supplementary data are available at Bioinformatics online.
‘I Did What I Had to Do’: Loyalty and Sacrifice in Girls’ Narratives of Homicide in Southern Brazil
Authors: Otto Natália 
Published: November 2019

AbstractThis paper examines how criminalized teenage girls who have committed homicide reconcile violent practices with self-conceptions of femininity in their personal narratives. Data come from 13 biographical interviews with adolescent girls incarcerated in Porto Alegre, Brazil. Drawing from Bourdieusian theory and narrative criminology, I examine how gendered social structures shape how girls produce intelligible and morally coherent accounts of their crimes. I found that girls share a narrative habitus that allows for three different frames to make sense of violence: violence as a gendered resource, as a gendered failure and as a gendered dilemma. This paper contributes to a growing feminist narrative criminology that investigates how personal narratives of violence are embedded in gendered social structures.
Prognostic impact of solid-part tumour volume doubling time in patients with radiological part-solid or solid lung cancer
Authors: Setojima Yusuke , Shimada Yoshihisa , Tanaka Takehiko , Shigefuku Shunsuke , Makino Yojiro , Maehara Sachio , Hagiwara Masaru , Masuno Ryuichi , Yamada Takafumi , Kakihana Masatoshi , Kajiwara Naohiro , Ohira Tatsuo , Ikeda Norihiko 
Published: November 2019

Abstract

OBJECTIVES
The measurement of part-solid and whole tumour sizes in patients with non-small-cell lung cancer (NSCLC) using computed tomography (CT) has been widely accepted for assessing clinical outcomes. Although the volume doubling time (VDT) of a tumour is useful for distinguishing high-risk nodules from low-risk ones, it remains to be clarified whether separate calculation of whole-tumour VDT and solid-part tumour VDT (SVDT) greatly affects the survival rate of patients with radiologically node-negative part-solid or solid NSCLC.

METHODS
The study included 258 patients with NSCLC who had radiologically node-negative, part-solid or solid tumours and who had at least 2 preoperative CT scans taken more than 30 days apart followed by radical lobectomy and systemic lymph node dissection between January 2012 and December 2015. Univariable and multivariable analyses of recurrence-free survival were performed using the Cox proportional hazards regression model.

RESULTS
The mean whole-tumour VDT and SVDT were 375 and 458 days, respectively. Multivariable analyses demonstrated that whole-tumour VDT (P = 0.003), SVDT (P < 0.001), solid-part tumour size, whole-tumour size and comorbidities significantly affected the recurrence-free survival. Using the receiver operating characteristic curve, the cut-off value of the SVDT for recurrence was 215 days, and the 5-year recurrence-free survival rates for patients with SVDT >215 days and those with SVDT <215 days were 85.7% and 43.0%, respectively (P < 0.001).

CONCLUSION
The calculation of SVDT in patients with node-negative, part-solid or solid NSCLC is highly useful for predicting postoperative survival outcomes.