bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of Metacognitive Instructional Strategy on Achievement and Self-Esteem in Basic Science in Nasarawa State, Nigeria
Authors: Danladi Salisu Amina , Eggon Philip Aku , Dibilang Justina T. 
Published: June 2024

This study investigated the Effect of Metacognitive Instructional Strategy (MCIS) on the Self-esteem and Achievement of Students in Basic Science in Nasarawa State, Nigeria. Two research questions guided the study and two null hypotheses were formulated and tested at 0.05 level of significance. Quasi experimental research design of pre-test and post-test of non-randomized and nonequivalent experimental and control group was adopted. The population of the study was 17,761 JS III students from junior secondary schools in the three educational zones in Nasarawa State, during the 2018/2019 academic session. The sample size was 300 JS III students drawn from six intact classes of 50 students, using a simple random technique. Two instruments which comprised of Basic and Achievement Test (BAT), and Basic Science Self-esteem Rating Scale (BSSERS), were developed by the researcher and validated by two experts from the Measurement and Evaluation and Science Education Departments were used for data collection. The internal consistencies of the instruments- BSSERS and BAT were obtained using Cronbach Alpha and Kuder Richardson formula as 0.86, and 0.74 respectively. Descriptive statistics of mean and standard deviation scores were used to answer the research questions while the null hypotheses were tested at a 0.05 level of significance using Analysis of Covariance (ANCOVA). Results showed that metacognitive instructional strategy was more effective in facilitating students’ self-esteem, and achievement in Basic Science than conventional teaching method. The strategy promoted the use of cognitive knowledge of thinking and the acquisition of scientific skills as well as mastering concept and principles of Basic Science. The study recommended adequate training and re-training of teachers on the use of metacognitive instructional strategy model for Nigerian Junior Secondary Schools through workshops and seminars organized by school authorities or Professional bodies such as Science Teachers’ Association of Nigeria.
Peran Adat Sasak Dalam Pernikahan Antara Tradisi dan Agama
Authors: Rizki Parabi  , Muhibban  
Published: June 2024

Penelitian ini bertujuan untuk mengetahui tentang hukum Adat sasak dalam pernikahan pada adat lombok menurut persfektif hukum islam. Penelitian ini menggunakan metodestudi pustaka yang dianalisis secara mendalam sehingga mendapatkan hasil tentang Peran adt sasak pada pernikahan. Hasil penelitian menunjukkan bahwa adat sasak yang dipakai di lombok menurut perspektif hukum Islam boleh dilakukandengan berbagai ketentuan yang tidak melangar hukum islam. Dapat disimpulkan bahwasuatuadat boleh dilakukan apabila dia tidak bertentangan dengan syariat dan dia masuk padakaidah Ushul fiqih yaitu Al urf atau kebiasaan yang mana kaidah ini menjadi salah satu sumber hukum menurut ilmu Ushul fiqihsedangkan alasan lainkebiasaan ini atau al urf tidak bertentangan dengan Alquran dan hadist.
HELMET USAGE : ATTITUDES AND PRACTICES AMONGST UNIVERSITY STUDENTS OF KARACHI
Authors: Shariff Yumna , Shah Perver Sakina , Kumar Avinash , Jabbar Abdul , Fatima Tehreem , Abbas Syeda Rida 
Published: June 2024

BACKGROUND: To assess the attitudes and practices of helmet usage among non-medical university students.
METHODOLOGY: A cross-sectional study was conducted through an online self-administered questionnaire, spread over six months. Open Epi calculated a sample size of 384. analyzed by applying the Chi-Square test by399 responses were received, which were analyzed by applying the Chi-Square test using SPSS v. 25. Association between variables was tabulated and descriptive analysis was performed.
RESULTS: Of the total population of 399, 236 (59.1%) were helmet users, and 163 (40.8%) were non-helmet users. Age and helmet usage were significantly associated (P=0.008<0.05); 49.9% of participants in urban areas wore a helmet compared with only 9.27% of helmet users in rural areas (P=0.027). The majority of both helmet users and non-helmet users do not take other safety precautions. 54% of non-helmet users agreed that strict penalties should be imposed for lack of helmet usage, while only 26.2% reported the affirmative. 71.1% of the helmet users reported that they own a license, compared with only 39.3% of the non-helmet users
CONCLUSION: The majority of participants did not practice helmet usage enough, although they had positive attitudes. Causes of low compliance towards helmets were discomfort, feelings of suffocation, and sweating. Urban riders had significantly better helmet usage than rural area riders, although hardly any wore helmets in the backseat. Since the majority of individuals belonged in their early 20s, therefore awareness campaigns and strict fines should be imposed on university students.
KEYWORDS: Helmet use, two-wheelers, helmet attitude, safety.
Penerapan Metode Media Visual Gambar Untuk Meningkatkan Motivasi Belajar Siswa Pada Mata Pelajaran Seni Budaya di Kelas VIII B SMP Negeri 7 Sentani
Authors: Yaung Sarce , Pardomuan Gusti Nyoman , Sahureka Cosye Meilina 
Published: June 2024

Proses belajar mengajar (PBM) seringkali dihadapkan pada materi yang abstrak dan di luar pengalaman siswa sehari-hari, sehingga materi menjadi sulit diajarkan guru dan sulit dipahami siswa. Berbagai materi yang berkaitan dengan sejarah masa lalu akan lebih konkrit dan mudah dipahami apabila disampaikan oleh guru dengan media visual layaknya gambar dan foto. Metode penelitian yaang digunakan adalah metode penelitian pengembangan dengan teknik pengumpulan data melalui observasi, wawancara dan penyebaran angket.adapun dalam penulisan ini menggunakan teknik kuantitatif,selanjutnya untuk menganalisis penulis menggunakan skala likert dan untuk menentukan hasil akhir menggunakan teknik analisi data. Hasil penelitian yang penulis lakukan menunjukkan adanya peningkatan motivasi belajar siswa terhadap mata pelajaran.
Berdasarkan hasil analisis dan kesimpulan pada bab pembahasan maka penulis mengajukan saran-saran sebagai berikut: adanya pengembagan baru dalam sistem belajar dengan menggunakan media pembelajaran yang lebih menarik seperti media gambar,media audio,bahkan bisa dalam bentuk yang lainnya agar siswa lebih termotivasi dan menangkap materi dengan lebih baik.
PKM PENDAMPINGAN TERHADAP MASYARAKAT DALAM PENANGANAN COVID 19 MELALUI MEDIA LUAR RUANGAN DI DUSUN AIRLOUW RT. 14/RW. 04
Authors: Muskita Marleen 
Published: June 2024

Dusun airlouw banyak warga Kota Ambon yang berkunjung kesini dikarenakan akses yang bebas untuk masuk dan banyak tempat wisata yang bebas dikunjungi oleh masyarakat namun masih minimnya sosialisasi mengenai covid â€“ 19 dan perilaku hidup bersih dan sehat melalui iklan luar ruangan Pada dusun airlouw, banyak warga Kota Ambon yang berkunjung kesini dikarenakan akses yang bebas untuk masuk dan banyak tempat wisata yang bebas dikunjungi oleh masyarakat. Contohnya pada RT. 014 di dusun airlow sering dikunjungi oleh masyarakat dari Kota Ambon, khususnya pada daerah pesisir pantai dusun airlow. Kunjungan masyarakat tidak dapat dibatasi, namun kesadaran mereka terhadap perilaku hidup bersih dan sehat sangat minim. Pada survey awal, ditemukan bahwa masih minimnya sosialisasi mengenai covid â€“ 19 dan perilaku hidup bersih dan sehat melalui iklan luar ruangan seperti baliho atau spanduk atau poster. Hal tersebut dapat kita lihat dari banyaknya masyarakat di RT tersebut dan masyarakat luar yang berkunjung tidak memperhatikan protokol kesehatan seperti penggunaan masker dan perilaku hidup bersih. Dan juga kurangnya sosialisasi melalui iklan luar ruangan terkait penggunaan masker oleh pemerintah setempat. Dalam hal ini ada beberapa persoalan yang mendasar yaitu : 1). Kurangnya Pemahaman Masyarakat Tentang Covid-19, 2). Kurangnya Pemahaman Masyarakat Tentang Perilaku Hidup Bersih dan Sehat (PHBS) dan Protokol Kesehatan, dan 3). Kurangnya kemampuan masyarakat dalam menjaga kebersihan dengan membuang sampah pada tempatnya. Berdasarkan masalah yang ada maka iptek yang di implementasikan di masyarakat adalah : 1). Melakukan sosialisasi lewat media luar ruangan edukasi pencegahan COVID-19. Seperti Stiker dan spanduk tentang mentaati protokol kesehatan dan Pembagian Masker, 2). Melakukan sosialisasi lewat media luar ruangan edukasi tentang Perilaku Hidup Bersih dan Sehat berupa spanduk dan 3) Membuat tempat pembuangan Sampah. Luaran kegiatan ini telah dipublikasi pada media massa elektronik Rekam FaktaÂ https://rekamfakta.com/2020/11/04/marleen-muskita-sp-msi-melalui-kkn-ppm-mahasiswa-ukim-dapat-bermanfaat-bagi-masyarakat/. Â Video kegiatan telah di upload pada chanel YouTube https://studio.youtube.com/video/SqHSP_qM_Eg/edit.
PENDAMPINGAN PEMBUATAN DIGITAL BUSINESS PADA PEBISNIS MULA LKP (LEMBAGA KURSUS dan PELATIHAN) PRISMA PROFESIONAL SURABAYA
Authors: Rahamawati Veronika , Wellyantony P Antonius Jan , Sulistyo Andy Pratama 
Published: June 2024

Generasi muda memiliki peran dalam meningkatkan kesejahteraan negara, namun masih banyak terjadi pengangguran yang dialami oleh generasi muda yang memiliki tingkat pendidikan yang tinggi dengan tata olah pikir yang baik. Upaya untuk meningkatkan kesejahteraan melalui generasi muda dimulai dari mengurangi tingkat pengangguran melalui kegiatan mendorong upaya start up business pada generasi muda. Komunitas generasi muda yang tertarik dengan bisnis mula semakin tumbuh sejalan dengan dukungan pemerintah yang semakin besar pada UMKM baik untuk lembaga formal maupun informal. Terkait dalam bidang komunikasi pemasaran terutama dalam bidang digital masih dibutuhkan, untuk itu dibutuhkan pendampingan pada start up business terutama yang terkait dengan bagaimana membuat komunikasi pemasaran melalui platform digital. Pendampingan ini dilakukan secara intens selama kurang lebih 8 bulan, custom menyesuaikan dengan kebutuhan masing-masing kelompok bisnis yang dilakukan oleh fasilitator (tim abdimas). Outcome yang dihasilkan dalam pendampingan ini adalah para start up business dapat memiliki solusi permasalahan terkait komunikasi pemasaran dengan platform digital business dan selepas program pendampingan ini kelompok bisnis tersebut dapat mengembangkan secara mandiri. Dari 17 kelompok yang didampingi, terdapat 10 kelompok yang telah menghasilkan output sesuai target, sedangkan luaran dalam kegiatan abdimas ini adalah jurnal nasional pengabdian pada masyarakat.
Effect of clay concentration on the wear behavior and permeability of polypropylene/clay nanocomposites
Authors: Horst María Fernanda , Tuckart Walter , Del Blanco Liliana , Failla Marcelo D. , Quinzani Lidia M. 
Published: January 2012

AbstractThe permeability and wear behavior of nanocomposites based on polypropylene (PP), polypropylene grafted with maleic anhydride (PPg), and montmorillonite (MMT) have been studied. Clay concentrations of 2–15 wt % and a constant PPg:MMT ratio of 3 : 1 were considered. The wear behavior of all materials was studied using the “pin‐on‐disc” technique. The results indicate that, for given clay concentration, the wear resistance decreases with applied load and that the composites are ∼ 20 times more resistant than their matrices. Moreover, the wear rate of the nanocomposites decreases as the clay concentration increases while that of the corresponding matrices increases. The PP, matrices, and composites display similar values of friction coefficient that neither changes with normal load. Additionally, the oxygen permeability of PP is gradually reduced by the increase of both clay and PPg concentration, being the effect of the filler tactoids much larger than that of the compatibilizer. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
Microwave preparation and properties of O‐crosslinked maleic acyl chitosan adsorbent for Pb2+ and Cu2+
Authors: Ge Huacai , Chen Hui , Huang Shiying 
Published: January 2012

AbstractA novel chitosan‐based adsorbent (CCTM) was prepared by the reaction of epichlorohydrin O‐crosslinked chitosan with maleic anhydride under microwave irradiation. The chemical structure of this polymer was characterized by infrared spectroscopy and X‐ray diffraction analyses. The effects of various variables such as degree of substitution, adsorption time, initial metal ion concentration, solution pH, and temperature, on the adsorption of Pb2+ and Cu2+ by CCTM were investigated. The results demonstrate that the microwave irradiation can remarkably enhance the reaction. CCTM has higher adsorption capacity than chitosan. The maximum adsorption capacities for Pb2+ and Cu2+, with initial concentrations of 0.02 mol L−1 at pH 5, are 246.3 and 132.5 mg g−1, respectively. The adsorbent can be recycled. These results have important implications for the design of effective chitosan‐based adsorbents in the removal of heavy metal ions from wastewaters. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
High‐throughput screening for cellobiose dehydrogenases by Prussian Blue in situ formation
Authors: Vasilchenko Liliya G. , Ludwig Roland , Yershevich Olga P. , Haltrich Dietmar , Rabinovich Mikhail L. 
Published: January 2012

AbstractExtracellular fungal flavocytochrome cellobiose dehydrogenase (CDH) is a promising enzyme for both bioelectronics and lignocellulose bioconversion. A selective high‐throughput screening assay for CDH in the presence of various fungal oxidoreductases was developed. It is based on Prussian Blue (PB) in situ formation in the presence of cellobiose (<0.25 mM), ferric acetate, and ferricyanide. CDH induces PB formation via both reduction of ferricyanide to ferrocyanide reacting with an excess of Fe3+ (pathway 1) and reduction of ferric ions to Fe2+ reacting with the excess of ferricyanide (pathway 2). Basidiomycetous and ascomycetous CDH formed PB optimally at pH 3.5 and 4.5, respectively. In contrast to the holoenzyme CDH, its FAD‐containing dehydrogenase domain lacking the cytochrome domain formed PB only via pathway 1 and was less active than the parent enzyme. The assay can be applied on active growing cultures on agar plates or on fungal culture supernatants in 96‐well plates under aerobic conditions. Neither other carbohydrate oxidoreductases (pyranose dehydrogenase, FAD‐dependent glucose dehydrogenase, glucose oxidase) nor laccase interfered with CDH activity in this assay. Applicability of the developed assay for the selection of new ascomycetous CDH producers as well as possibility of the controlled synthesis of new PB nanocomposites by CDH are discussed.
Role of Hydrocarbon Radicals CHx (x=1, 2, 3) in Graphene Growth: A Theoretical Perspective
Authors: Wang Chong , Xiao Bo , Ding Yi‐hong 
Published: January 2012

AbstractMany outstanding properties of graphene are blocked by the existence of structural defects. Herein, we propose an important healing mechanism for the growth of graphene, which is produced via plasma‐enhanced chemical vapor decomposition (PECVD), that is, the healing of graphene with single vacancies by decomposed CH4 (hydrocarbon radical CHx, x=1, 2, 3). The healing processes undergo three evolutionary steps: 1) the chemisorption of the hydrocarbon radicals, 2) the incorporation of the C atom of the hydrocarbon radicals into the defective graphene, accompanied by the adsorption of the leaving H atom on the graphene surface, 3) the removal of the adsorbed H atom and H2 molecule to generate the perfect graphene. The overall healing processes are barrierless, with a huge released heat of 530.79, 290.67, and 159.04 kcal mol−1, respectively, indicative of the easy healing of graphene with single vacancies by hydrocarbon radicals. Therefore, the good performance of the PECVD method for the generation of graphene might be ascribed to the dual role of the CHx (x=1, 2, 3) species, acting both as carbon source and as defect healer.
Synthesis of Stable Ruthenium Olefin Metathesis Catalysts with Mixed Anionic Ligands
Authors: Gawin Rafał , Grela Karol 
Published: January 2012

AbstractA series of ruthenium carboxylate complexes that contain two different anionic ligands was prepared. The complexes that bear iodide ligands exhibit remarkable chemical stability. Such complexes have a diminished tendency to undergo anionic ligand exchange and can be activated byvarious acids to form catalysts, which are active in olefinmetathesis reactions.
Ferrocenyl Maleimides – Synthesis, (Spectro‐)Electrochemistry, and Solvatochromism
Authors: Hildebrandt Alexander , Lehrich Steve W. , Schaarschmidt Dieter , Jaeschke Romy , Schreiter Katja , Spange Stefan , Lang Heinrich 
Published: January 2012

AbstractFerrocenylmaleimides have been synthesized from 2,5‐dibromo‐N‐methyl‐1H‐pyrrole. Bromine shift and oxidation of the pyrrole core with subsequent ferrocenylation using the Negishi C–C cross‐coupling protocol led to the formation of 3‐ferrocenyl‐N‐methylmaleimide (3), 3‐bromo‐4‐ferrocenyl‐N‐methylmaleimide (4), and 3,4‐diferrocenyl‐N‐methylmaleimide (5). The structural properties of 4 and 5 were investigated by single‐crystal X‐ray diffraction. Cyclic and square‐wave voltammetry, in situ UV/Vis/NIR and IR spectroelectrochemistry (5) highlight the electrochemical properties of these compounds. Compounds 3 and 4 exhibit one reversible ferrocenyl‐based redox event, whereas 5 shows two separate electrochemically reversible one‐electron transfer processes with remarkably high ΔE°′ values and reduction potentials of E1°′ = 50 and E2°′ = 380 mV (ΔE°′ = 330 mV), respectively, with [NBu4][B(C6F5)4] as the supporting electrolyte. The NIR measurements confirm the electronic communication between the iron centers (FeII/FeIII) as intervalence charge transfer absorptions were observed in 5+. Compound 5 was classified as a weakly coupled class II system, according to Robin and Day. UV/Vis investigations of the solvatochromic behavior of 3–5 revealed the complex solvation of these push–pull systems, which reflects that three important solvent properties (hydrogen bond formation ability, polarizability, and solvation of the carbonyl group and the C=C bond) affect $\tilde {\nu}$max.
Experience plan for controlled‐atmosphere cone calorimeter by Doehlert method
Authors: Guillaume Eric , Marquis Damien Michel , Chivas Carine 
Published: January 2012

ABSTRACTControlled‐atmosphere cone calorimeter is an interesting test method to study at the same time the effect of oxygen concentration and radiant heat flux on materials' fire behaviour and gas release. However, measurements in an extended range for these two variables can be tedious. To optimize the experimental measurement, this paper proposes a methodology based on the Doehlert design. The Doehlert method allows significant optimization of the number of tests. The optimization of measurement response is then accomplished using polynomial approximations to establish fire behaviour constitutive. Copyright © 2012 John Wiley & Sons, Ltd.
Continuation methods applied to the 2D Navier–Stokes equations at high Reynolds numbers
Authors: Wales C. , Gaitonde A.L. , Jones D.P. 
Published: January 2012

SUMMARYNonlinearities arise in aerodynamic flows as a function of various parameters, such as angle of attack, Mach number and Reynolds number. These nonlinearities can cause the change from steady to unsteady flow or give rise to static hysteresis. Understanding these nonlinearities is important for safety validation and performance enhancement of modern aircraft. A continuation method has been developed to study nonlinear steady state solutions with respect to changes in parameters for two‐dimensional compressible turbulent flows at high Reynolds numbers. This is the first time that such flows have been analysed with this approach. Continuation methods allow the stable and unstable solutions to be traced as flow parameters are changed. Continuation has been carried out on two‐dimensional aerofoils for several parameters: angle of attack, Mach number, Reynolds number, aerofoil thickness and turbulent inflow as well as levels of dissipation applied to the models. A range of results are presented. Copyright © 2012 John Wiley & Sons, Ltd.
An exploration of nursing home managers' knowledge of and attitudes towards the management of pain in residents with dementia
Authors: Barry Heather E. , Parsons Carole , Peter Passmore A. , Hughes Carmel M. 
Published: January 2012

BackgroundThe aims of this study were to explore the knowledge, attitudes and beliefs that nursing home managers hold with regard to the assessment and management of pain in residents with dementia and to determine how these may be affected by the demographic characteristics of the respondents.MethodsA questionnaire comprising six sections was mailed, on two occasions during March and April 2010, to 244 nursing home managers in Northern Ireland (representing 96% of the nursing homes in Northern Ireland).ResultsThe response rate was 39%. Nearly all respondents (96%) provided care to residents with dementia, yet only 60% of managers claimed to use pain treatment guidelines within their nursing home. Respondents demonstrated good knowledge about pain in residents with dementia and acknowledged the difficulties surrounding accurate pain assessment. Nursing home managers were uncertain about how to manage pain in residents with dementia, demonstrating similar concerns about the use of opioid analgesics to those reported in previous studies about pain in older people. Managers who had received recent training (p = 0.044) were less likely to have concerns about the use of opioid analgesia than those who had not received training. Respondents' beliefs about painkillers were largely ambivalent and were influenced by the country in which they had received their nursing education.ConclusionsThe study has revealed that accurate pain assessment, training of nursing staff and a standardised approach to pain management (the use of pain management guidelines) within nursing homes all have a significant part to play in the successful management of pain in residents with dementia. Copyright © 2012 John Wiley & Sons, Ltd.
Implications of a positive sentinel node in oral squamous cell carcinoma
Authors: Gurney Benjamin A. S. , Schilling Clare , Putcha Venkata , Alkureishi Lee W. , Alvarez Amezaga J. , Bakholdt Vivi , Barbier Herrero Luis , Barzan Luigi , Bilde Anders , Bloemena Elisabeth , Salces Carmen Camarero , Palma Paolo Dalla , de Bree Remco , Dequanter Didier , Dolivet Gilles , Donner Davide , Flach Geke B. , Fresno Manuel , Grandi Cesare , Haerle Stephan , Huber Gerhard F. , Hunter Keith , Lawson George , Leroux Agnes , Lothaire Phillippe H. , Mamelle Gerard , Silini Enrico M. , Mastronicola Romina , Odell Edward W. , O'Doherty Michael J. , Poli Tito , Rahimi Siavash , Ross Gary L. , Zuazua J. Santamaria , Santini Simone , Sebbesen Lars , Shoaib Taimur , Sloan Philip , Sorensen Jens Ahm , Soutar David S. , Therkildsen Marianne H. , Vigili Maurizio Giovanni , Villarreal Pedro M. , von Buchwald Christian , Werner Jochen A. , Wiegand Susanne , McGurk Mark 
Published: January 2012

AbstractBackgroundThe role of sentinel node biopsy in head and neck cancer is currently being explored. Patients with positive sentinel nodes were investigated to establish if additional metastases were present in the neck, their distribution, and their impact on outcome.MethodsIn all, 109 patients (n = 109) from 15 European centers, with cT1/2,N0 tumors, and a positive sentinel lymph node were identified. Kaplan–Meier and univariate and multivariate logistic regression analysis were used to identify variables that predicted for additional positive nodes and their position within the neck.ResultsA total of 122 neck dissections were performed in 109 patients. Additional positive nodes were found in 34.4% of cases (42/122: 18 same, 21 adjacent, and 3 nonadjacent neck level). Additional nodes, especially if outside the sentinel node basin, had an impact on outcome.ConclusionsThe results are preliminary but suggest that both the number and the position of positive sentinel nodes may identify different prognostic groups that may allow further tailoring of management plans. © 2012 Wiley Periodicals, Inc. Head Neck, 2012