bluuebunny/crossref_metadata_2025_split huggingface dataset:
Pengembangan Lembar Kegiatan Peserta Didik Berbasis Project Based Learning Untuk Meningkatkan Kemampuan Berpikir Kritis Dan Keterampilan Sosial Bagi Siswa Kelas IV Sekolah Dasar
Authors: Dyah Wulandari  , Mustaji  , Rr. Nanik Setyowati  
Published: March 2024

This study aims to: (1) produce LKPD-based Project Based Learning that is feasible to improve critical thinking and social skills for grade IV elementary school students (2) produce LKPD-based Project Based Learning that is effective for improving critical thinking for grade IV elementary school students (3) produce LKPD based on Project Based Learning which is effective to improve social skills for fourth grade elementary school students. (4) produce practical Project Based Learning-based worksheets to improve critical thinking and social skills for fourth grade elementary school students.
This learning media development research refers to the ADDIE model. The research subjects were fourth grade students of SD Negeri Mojo with a total of 16 students. The research design used one group pretest-posttest. The results showed: (1) that the learning device in the form of a syllabus obtained a validation result of 86.6% and RPP obtained a validation result of 94%. The results of the validation of the pre-posttest instrument were 91.6%. While the results of LKPD validation from media experts are 90%. Based on the calculation of the Likert scale, the validation results enter the very feasible criteria. So it can be concluded that Project Based Learning LKPD to Improve Critical Thinking and Social Skills for Grade IV Elementary School Students is very feasible to use. (2) There is a moderate increase in the acquisition of pretest and posttest scores, classically completeness is only 12.5% ​​with an average pretest of 52.81. The results of the posttest classical completeness score reached 87.5% with an average posttest score of 80.94. Based on the calculation of the N-Gain score, there is an increase of 0.60 and is included in the moderate improvement criteria. (3) Observation of students' communication skills obtained results of 86.6%, participating 91.8%, and sharing 94.4%. Classically obtained an average of 92.18, with very active criteria. (4) The results of the teacher's assessment of the Project Based Learning-Based LKPD to Improve Critical Thinking and Social Skills for Fourth Grade Students scored 92.18% and the average student response questionnaire was 96.5%. From these results, according to the Likert scale calculation which is converted into a percentage, it is included in the very good criteria, which means it is very practical. Thus, it can be concluded that the LKPD Based on Project Based Learning to Improve Critical Thinking and Social Skills for Class IV Students is very practical to be used as a learning medium.
Increased Interest in Learning Through Smart Apps Creator
Authors: Sagala Ronal , Simanungkalit Malani 
Published: March 2024

Reading is huge because reading is a source of information, but most of the learners open social media more often, play games with laptops or gadgets, compared to reading. Using teaching materials in supporting the teaching learning process can help students more easily understand the learning material, because it is undeniable that the development of teaching materials is very important in learning, so the more interesting the teaching materials used, the more interested students will be in the teaching materials. The purpose of this research is to determine the development of application-based teaching materials and to determine student responses to application-based teaching materials in the Church Administration and Management course in the Christian Leadership Study Program. The results of the study are calculatedbased on the validity calculation formula, then an average score of 3.1875 is obtained with decent criteria. Through this research, it is hoped that the application-based Church Administration and Management teaching program (Smart Apps Creator) is used by students as a practical learning medium and can be used anytime and anywhere
Student Character Education Towards Excellence: Optimization of Transformational Leadership of Lecturers
Authors: Situmorang Meditatio , Situmeang Chintya Megaria 
Published: March 2024

Lecturers as educators have a very large role in determining the quality of higher education graduates. Transformational leadership becomes a leadership style that can be used by lecturers to direct and guide students to have superior character. lecturers who teach in the Christian Leadership Department have implemented this transformational leadership, although it has not been implemented thoroughly. Furthermore, problems arise about the application of transformational leadership of lecturers that have not been maximized, making students not have a truly superior character. This research was conducted to find out how lecturers apply transformational leadership and how it affects the students of the Christian Leadership Department? This research will examine students in the Christian Leadership Department, Faculty of Theological Sciences IAKN Tarutung about the application of transformational leadership of lecturers and their influence in shaping student character. Through this research, it is hoped that lecturers can apply transformational leadership optimally, because the transformational leadership applied by lecturers is influential in building superior student character. Through the application of transformational leadership, students experience changes and have superior character.
Pengembangan Modul Menulis Cerpen Menggunakan Model PBL Pada Mata Kuliah Apresiasi Prosa
Authors: Zhe Zherry Putria Yanti , Gusriani Atika , Yuniarti Lisa 
Published: March 2024

This research is motivated by initial refrection on the prose appreciation course, namely the short story material, some of the problems found in learning to write, especially writing short stories, student have not been able to meet the standards of learning to write completely. The purpose of this research is to encourage students to develop ideas and increase students creative thingking. This type of research and development. This learning module was developed using a 4-D model consisting of four stages: (1) defining, (2) designing, (3) developing, and (4) desiminating. The instrument used to collect data is in the form of a questionnaire related to the module, namely: design aspects, language aspect, and material aspects. Practicality test questionnaire and effectiveness test sheet. The results of the design validation test were declared valid and the results of the validation of linguist and materials were declarated very valid. With the level of design validity (81,25%), language (89,78%), and material (95,45%). The average overall scor is 88,82% with a very valid category. The practicality test obtained from the lecturers with a score of 94,44 and the practicality test by 11 students got an average score of 92,51 in the very pratical category. The effectiveness testwast carried out by giving a written test to students with an average score of 84,54 with a very pratical category. So the use of the development of the short story writing module is declared valid, practical, effective, and feasible to use.
Analisis Kemampuan Smash Bola Voli Ditinjau dari Kelentukan Pergelangan Tangan Permainan Bola Voli di SMAN 5 Barru
Authors: Saharullah Saharullah , Arsy Ahmad Zaky , Saripin Saripin , Muhammadong Muhammadong 
Published: March 2024

Analisis kelentukan pergelangan tangan pemain bola voli SMAN 5 Barru.” memiliki persentase, yaitu 2 orang yang masuk dalam kriteria Sangat Rendah dengan persentase 10%. 2 orang yang masuk dalam kriteria Sedang dengan persentase 10%, 9 0rang yang masuk dalam kriteria Baik dengan presentase 45%. dan 7 Orang yang masuk dalam kriteria Sangat Baik dengan presentase 35%, Analisis kemampuan smash bola voli pemain bola voli SMAN 5 Barru.” memiliki persentase, yaitu 2 orang yang masuk dalam kriteria Sangat Rendah dengan persentase 10%. 4 orang yang masuk dalam kriteria Sedang dengan persentase 20%, 7 0rang yang masuk dalam kriteria Baik dengan presentase 35%. dan 7 Orang yang masuk dalam kriteria Sangat Baik dengan presentase 35% dan data kontribusi kemampuan smash bola voli di tinjau dari kelentukan pergelangan tangan pemain Bola Voli di SMAN 5 Barru yaitu sampel terdapat 20 orang, R squer 0.878, dan Sig 0.000 dengan kata lain kontribusi dari kelentukan pergelangan tangan pemain Bola Voli di SMAN 5 Barru terhadap kemampuan smash bola voli memiliki persentase 87.8%
Pengembangan Modul dengan Pendekatan React pada Materi SPLDV di SMPN 2 Banyakan
Authors: Putri Hani Yuanta Risma , Sulistyono Bambang Agus , Handayani Aprilia Dwi , Jatmiko Jatmiko 
Published: March 2024

Modul merupakan media pembelajaraan yang dapat digunakan untuk meningkatkan kualitas pembelajaran, modul biasanya disebut sebagai bahan belajar sendiri (self material learning). Sebagian besar siswa memiliki kendala ketika belajar matematika, karena menurut siswa matematika merupakan ilmu yang sulit untuk dipelajari. Berdasarkan hal tersebut peneliti mengembangkan modul dengan mengkaitkan materi dengan kehidupan nyata siswa. Salah satu pendekatan dalam matematika yang berkaitan dengan kehidupan nyata adalah dengan pendekatan REACT (Realiting, Experiencing, Applyinh, Cooperating, Transfering). Penelitian ini dilakukan di SMPN 2 Banyakan dengn jumlah siswa 21 siswa. Tujuan penelitian ini yaitu untuk mengembangkan media pembelajaran modul yang valid, praktis, dan efektif bagi siswa. Model pengembangan yang digunakan peneliti adalah ADDIE yang meliputi 5 tahapan yaitu analysis, design, development, implementation, and evaluation. Teknik pengumpula data yang dilakukan oleh peneliti dengan memberikan angket validasi kepada para validator, memberikan angket respon untuk mengetahui kepraktisan media, dan memberikan soal pre-test dan post-test. Dari hasil validasi yang telah dilakukan peneliti diperoleh presentase sebesar dari ahli materi, dari ahli media, dan dari ahli praktisi. Berdasarkan dari hasil validasi yang telah dilakukan media dinyatakan sangat layak untuk digunakan. Sedangkan kepraktisan media diperoleh presentase dengan kategori praktis. Dan hasil validasi media dikatakan efektif diperoleh nilai rata-rata .
Guest Editor’s Column
Authors: Arvidsson Alf 
Published: March 2024

The wide span of themes, methods and perspectives in this issue of Puls testifies to the expansion of the epistemological expectations in ethnomusicology, or, the increasing number of fields in which ethnomusicology can claim a position and make substantial contributions. The articles in this issue address themes such as:
•The affordance to make music that an audience offers musicians.•The technical possibilities and restraints of different media and the conventions on how to handle them.•The changing of meanings and performance practices when music is moved across time, space and social networks.•Music being comprehensible by establishing patterns – and patterns of deviating from patterns.•Music representing audiences and musicians, musicians and audiences representing music, musicians and audiences representing or challenging each other by the means of music.• Music and society constructing and reconstructing each other.
Mental retardation and verbal dyspraxia in a new patient with de novo creatine transporter (SLC6A8) mutation
Authors: Battini Roberta , Chilosi Anna , Mei Davide , Casarano Manuela , Alessandrì M. Grazia , Leuzzi Vincenzo , Ferretti Giovanni , Tosetti Michela , Bianchi M. Cristina , Cioni Giovanni 
Published: June 2007

AbstractWe report on a 9.5‐year‐old Italian boy affected by creatine transporter deficit (CT1), due to a de novo mutation in SLC6A8 gene. The patient was investigated by means of a comprehensive neuropsychological protocol and presented with an unusual alteration of speech and expressive‐language function, associated with mental retardation, that differed from CT1 patients described to date. In particular, he exhibited a developmental apraxia of speech (DAS) with motor planning and execution deficit, while receptive language was consistent with his mental age. © 2007 Wiley‐Liss, Inc.
Atypical teratoid/rhabdoid tumor in a patient with Beckwith–Wiedemann syndrome
Authors: Jackson Eric M. , Shaikh Tamim H. , Zhang Fan , Wainwright Luanne M. , Storm Phillip B. , Hakonarson Hakon , Zackai Elaine H. , Biegel Jaclyn A. 
Published: June 2007

AbstractBeckwith–Wiedemann syndrome (BWS) is a genetic disorder associated with an increased risk of childhood tumors. Here we describe a patient with BWS who developed a central nervous system atypical teratoid/rhabdoid tumor (AT/RT). To our knowledge, despite the known cancer predisposition, this patient is the first described with BWS to develop an AT/RT. Due to the high propensity of these patients to develop childhood tumors, in addition to routine diagnostic tests, analysis of the tumor DNA using the Illumina Infinium whole‐genome genotyping 550K Beadchip was performed to investigate a possible common underlying mechanism for his BWS and AT/RT. The only alteration detected was monosomy 22, which was accompanied by a somatic mutation in the INI1 rhabdoid tumor gene. These results suggest that, despite an underlying cancer predisposition, the occurrence of BWS and AT/RT in this patient may be unrelated. © 2007 Wiley‐Liss, Inc.
Aqueous‐solution and solid‐film properties of poly(vinyl alcohol), poly(vinyl pyrrolidone), gelatin, starch, and carboxymethylcellulose polymers
Authors: Mutalik Venkatesh , Manjeshwar Lata S. , Wali Ashwini , Sairam Malladi , Sreedhar Bojja , Raju K. V. S. N. , Aminabhavi Tejraj M. 
Published: June 2007

AbstractWith the density and viscosity results for five polymers—poly(vinyl alcohol) (PVA), poly(vinyl pyrrolidone) (PVP), gelatin (Ge), starch (St), and carboxymethylcellulose (CMC)—measured in aqueous solutions at different temperatures, we have computed the excess molar volumes and activities. Smaller excess molar volumes for PVA solutions are attributed to specific types of interactions, whereas for other polymers, these data are quite large, indicating dispersion‐type interactions. The activity data of the polymer solutions vary widely, depending on the nature of the polymers and their intermolecular interactions. The freestanding film properties of the polymers indicate that Ge and PVA produce stable films, whereas brittle films can be obtained for PVP and St. The mechanical strength properties of PVA and CMC have been found to be suitable for membrane fabrication. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2007
Preparation of a poly(vinyl chloride)/layered double hydroxide nanocomposite with a reduced heavy‐metal thermal stabilizer
Authors: Chen Guangming 
Published: June 2007

AbstractA novel poly(vinyl chloride) nanocomposite with layered double hydroxide was successfully prepared via a melt‐compounding process in which the positively charged platelets were dramatically exfoliated and homogeneously dispersed. Because of the absorption of the released hydrochloric vapor by both layered double hydroxide platelets and an organomodifier (stearate anions), the added amount of the conventional toxic heavy‐metal heat stabilizer could be reduced. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2007
Rheological behavior of polypropylene/novolac blends
Authors: Cui Limei , Zhou Zhen , Zhang Yong , Zhang Yinxi , Zhang Xiangfu , Zhou Wen 
Published: June 2007

AbstractThe rheological behavior of polypropylene/novolac blends was investigated with special reference to the effects of the blend ratio, compatibilization, and dynamic cure. The polypropylene and all the polypropylene/novolac blends presented evidence of shear‐thinning behavior. The novolac, compatibilizer, and dynamic cure had dramatic effects on the rheological behavior of the polypropylene. Various rheological plots, including plots of the viscosity, storage modulus, loss modulus, and loss angle, Han plots, and Cole–Cole plots, were used to analyze the polypropylene/novolac blends. The results showed that the compatibilization together with the dynamic cure could increase the viscosity and modulus because of the formation of a grafting polymer between the maleic anhydride grafted polypropylene and the curing novolac resin. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2007
Effect of the carboxylic acid monomer type on the emulsifier‐free emulsion copolymerization of styrene and butadiene
Authors: Abdollahi Mahdi , Rahmatpour Ali , Khoshniyat Ali Reza 
Published: June 2007

AbstractCarboxylated styrene–butadiene rubber latexes were prepared through the emulsifier‐free emulsion copolymerization of styrene and butadiene with various carboxylic acid monomers. The effects of various carboxylic acid monomers on the particle formation process were investigated. The type of carboxylic acid monomer strongly affected the particle nucleation. The number of particles and thus the polymerization rate increased with the increasing hydrophobicity of the carboxylic acid monomers. There was a significant difference in the polymerization rate per particle. The results showed that particle nucleation and growth were dependent on the hydrophilic nature of the carboxylic acid monomers. The average particle diameter of the carboxylated styrene–butadiene rubber latexes in the dry state was obtained through some calculations using direct measurements of the average particle diameter in the monomer‐swollen state by a dynamic light scattering technique. Several parameters, such as the polymerization rate, number of latex particles per unit of volume of the aqueous phase, and polymerization rate per particle, were calculated. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2007
Synthesis and enantioselectivities of soluble polymers incorporating optically active binaphthyl and binaphthol
Authors: Zou Xiaowei , Zhang Shuwei , Cheng Yixiang , Liu Yan , Huang Hui , Wang Chunyan 
Published: June 2007

AbstractA polymer (P‐1) was synthesized through the polymerization of (S)‐6,6′‐dibromo‐3,3′‐dibutyl‐1,1′‐binaphthol with (S)‐2,2′‐dioctoxy‐1,1′‐binaphthyl‐6,6′‐boronic acid in a Pd‐catalyzed Suzuki reaction, and another polymer (P‐2) was synthesized through the polymerization of (S)‐6,6′‐dibromo‐3,3′‐dibutyl‐1,1′‐binaphthol with (S)‐6,6′‐diethynyl‐2,2′‐dioctoxy‐1,1′‐binaphthyl in a Pd‐catalyzed Sonogashira reaction. The two polymers showed good solubility in some common solvents and were characterized with NMR, Fourier transform infrared, gel permeation chromatography, and circular dichroism spectroscopy. The application of the chiral monomers and polymers in the asymmetric addition of diethyl zinc to benzaldehyde was studied. The results indicated that P‐1, P‐2, and the monomer (S)‐3,3′‐dibutyl‐1,1′‐binaphthol were efficient ligands in the asymmetric addition of diethyl zinc to benzaldehyde. The chiral polymer ligands P‐1 and P‐2 were more efficient than their monomeric version, (S)‐3,3′‐dibutyl‐1,1′‐binaphthol, and could be easily recovered and reused without a loss of catalytic activity or enantioselectivity. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2007
Preparation of poly(lactic acid) and pectin composite films intended for applications in antimicrobial packaging
Authors: Liu L. S. , Finkenstadt V. L. , Liu C.‐K. , Jin T. , Fishman M. L. , Hicks K. B. 
Published: June 2007

AbstractA pectin and poly(lactic acid) (PLA) composite was compounded by extrusion. A model antimicrobial polypeptide, nisin, was loaded into the composite by diffusion. The incorporation of pectin into PLA resulted in a heterogeneous biphasic structure, as revealed by scanning electronic microscopy, confocal laser microscopy, and fracture–acoustic emission. The incorporation of pectin also created a rough and cragged surface, which was hydrophilic and facilitated the access and absorption of nisin. The nisin‐loaded composite suppressed Lactobacillus plantarum growth, as indicated by agar diffusion and liquid‐phase culture tests. The incorporation of pectin at the concentration of ∼ 20% of the total mass did not alter the Young's modulus of the film from that of the pure PLA. The composite materials were able to retain their tensile strength, flexibility, and toughness to an extent that satisfied the requirements for packaging materials. Results from this research indicate the potential of pectin/PLA composites for applications in antimicrobial packaging. © 2007 Wiley Periodicals, Inc.‡ J Appl Polym Sci 2007
Crystal morphology and nonisothermal crystallization kinetics of short carbon fiber/poly(trimethylene terephthalate) composites
Authors: Run Mingtao , Song Hongzan , Yao Chenguang , Wang Yingjin 
Published: June 2007

AbstractThe crystal morphology and nonisothermal crystallization kinetics of short carbon fiber/poly(trimethylene terephthalate) (SCF/PTT) composites were investigated by polarized optical microscopy (POM) and differential scanning calorimetry (DSC). The optical micrographs suggest that the more content of SCF in composites, the smaller size of the spherulites is. Moreover, the addition of SCF can lead to forming banded spherulites in composites. The Avrami equation modified by Jeziorny, Ozawa theory and the method developed by Mo were used, respectively, to fit the primary stage of nonisothermal crystallization of various composites. The results suggest that the SCF served as nucleation agent, accelerates the crystallization rate of the composites, and the more content of SCF, the faster crystallization rate is. Effective activation energy calculated by the differential iso‐conversional method developed by Friedman also concludes that the composite with more SCF component has higher crystallization ability than that with less SCF content. The kinetic parameters U* and Kg are determined, respectively, by the Hoffman–Lauritzen theory. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007
Biodegradable foams of poly(lactic acid)/starch. I. Extrusion condition and cellular size distribution
Authors: Zhang Jian‐Feng , Sun Xiuzhi 
Published: June 2007

AbstractBiodegradable foams derived from poly(lactic acid) (PLA) and starch were prepared by extrution using water as a blowing agent and talc as nucleation agent. Foam cellular size and size distribution was significantly affected by extrusion conditions (i.e., extruder temperature profiles, die diameters, and screw speed), and material compositions, (i.e., water concentration, PLA/starch ratio, and nucleation agent concentration). Foam with a relatively fine cellular size and uniform cellular size distribution was obtained under optimized conditions of PLA/starch ratio at 40/60, 15% water, 195°C temperature before the die, 3‐mm die nozzle diameter, 200‐rpm screw speed, and 2% talc. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007