bluuebunny/crossref_metadata_2025_split huggingface dataset:
Persepsi Siswa Tentang Efikasi Guru Dan Tingkah Laku Belajar Dengan Hasil Belajar Siswa
Authors: Nurqaidah Siti , Hendra Ayu 
Published: July 2022

Penelitian ini bertujuan untuk mengetahui hubungan yang signifikan antara persepsi siswa tentang efikasi guru dan tingkah laku belajar dengan hasil belajar siswa baik secara sendiri-sendiri maupun secara bersama-sama pada mata diklat Pengukuran Listrik kelas X Tahun Ajaran 2011/2012 SMKN 5 Padang dan seberapa besar hubungan tersebut. Penelitian ini termasuk kedalam jenis penelitian korelasional yang bersifat deskriptif dengan subyek penelitian sebanyak 49 orang siswa SMKN 5 Padang. Instrumen penelitian menggunakan angket dalam bentuk skala likert. Adapun teknik analisis data yang digunakan dalam penelitian ini adalah analisis korelasi product moment . Dari hasil penelitian dapat diketahui bahwa terdapat hubungan yang signifikan dengan hasil belajar mata diklat Pengukuran Listrik adalah faktor persepsi siswa tentang efikasi guru dan tingkah laku belajar baik secara sendiri-sendiri maupun secara bersama-sama. Dengan demikian dapat disimpulkan bahwa hasil belajar yang baik turut dipengaruhi oleh persepsi siswa tentang efikasi guru dan tingkah laku belajar yang baik pula, semakin baik persepsi siswa tentang efikasi guru dan tingkah laku belajar siswa maka hasil belajar siswa pun akan baik atau meningkat.
Penerapan Model Pembelajaran Concept Sentence Untuk Meningkatkan Kemampuan Menulis Teks Ulasan
Authors: Waruwu Lestari 
Published: July 2022

Tujuan penelitian ini adalah untuk meningkatkan kemampuan siswa menulis teks ulasan dengan menggunakan model pembelajaran Concept Sentence. Kegiatan Penelitian Tindakan Kelas ini dilaksanakan dua siklus dengan menggunakan teknik pengumpulan data, lembar observasi dan lembar penilaian. Subjek penelitian ini adalah siswa kelas VIISMP Negeri 1 Afulu pada semester genap yang berjumlah siswa 35 orang dengan jumlah laki-laki 15 dan perempuan 10 orang. Hasil penelitian ini menunjukkan bahwa ada peningkatan kemampuan menulis teks ulasan melalui model pembelajaran Concept Sentence. Terlihat pada Siklus I dengan nilai rata-rata sebesar 61,11 %, sedangkan pada siklus II dengan nilai rata-rata sebesar 83,00 %. Berdasarkan hasil penelitian di atas, maka peneliti mengambil kesimpulan bahwa: dengan menggunakan model pembelajaran Concept Sentence dapat meningkatkan kemampuan menulis teks ulasan pada siswa kelas VII SMP Negeri 1 Afulu. Saran dari hasil tersebut maka peneliti menyarankan yaitu: 1) Hasil penelitian ini dapat digunakan sebagai bahan pertimbangan bagi guru mata pelajaran Bahasa Indonesia. 1) Bagi peneliti selanjutnya diharapkan lebih kreatif dan inovatif menemukan dan menggunakan model pembelajaran sesuai dengan materinya.
JURIDICAL ANALYSIS OF THE STATUS OF INHERITANCE OF CHILDREN OUTSIDE OF MARRIAGE ACCORDING TO CIVIL LAW
Authors: Rohmah Mayza H , Harianti Isnin , Riawanto Riawanto 
Published: July 2022

This preparation is the result of a written audit to answer the question: (1) What is the status and position of inheritance rights for children present only from one parent as referred to by Civil Law? (2) How is the distribution of inheritance to children outside of marriage as referred to in civil law?
The research method used is a kind of juridical normalization research, particularly legal examination, so it centers on positive legal invemtaris, legitimate standards and teachings, legal discovery, systematic law, synchronization rate, legal correlation, and legal history. The author also uses case approach techniques, these strategies are used to consider legal standards or decisions completed in lawful practice. Data sources are obtained from:(1) primary materials; and (2) secondary materials. Judging from the arrangement of this theory, it can be obtained the following results: (1) based on Law No. 16 of 2019 article 43 paragraph 1, a child without the presence of a father who is not considered consequently has social equality from his mother and his mother's family; (2) Based on article 280 of the Criminal Code there are 2 different ways for the recognition of a child without the presence of a father, namely intentional confession and coercive confession; (3) In article 863 of the Criminal Code tends to explain that children with one parent only who is present with the heirs of group I get 1/3 of the legal child, if with group II or III the heir gets 1/2 inheritance, if with bunch group IV get 3/4 inheritance, and with heirs who do not leave a valid heir, The outer child of marriage acquires all the inheritance
Rakosi Jarabak Analysis for the South Indian Population - A Cross-Sectional Study
Authors: Sruthi H  , S Aravind Kumar , Arvind Sivakumar  
Published: July 2022

Background:
Rakosi jarabak analysis has been proved to be effective in predicting the facial growth pattern, morphological characters, reaction to various orthopedic approaches, and functional alterations. Most of these established cephalometric values are based on average values for the Caucasian population. Whereas cephalometric values vary among different populations and have shown variations among different ethnic groups, gender, and age. The objectives of this paper are to develop Rakosi Jarabak cephalometric norms for the South Indian population and compare the measures to values from other ethnic groups.
Materials and Method:
Facad software was used to track the lateral cephalograms of 100 non-growing patients from the South Indian population who satisfied our inclusion criteria. Nineteen craniofacial parameters of Jarabak’s analysis were measured.
Result:
A comparison between the males and females of the South Indian population showed a significant difference between the three parameters. Comparison of the south Indian male, female values, and overall values with established norms of various ethnic populations showed significant differences among various parameters.
Conclusion:
This study establishes the south Indian ethnic norms for Rakosi Jarabak analysis. The south Indian norms vary from caucasian norms showing significant ethnic .These differences need to be considered when analyzing the cephalogram . These values will help in customizing treatment plans based on ethnic norms.The study concludes that distivariationsnct sets of cephalometric norms should be developed for different ethnic groups in order to aid orthodontists and surgeons in optimising treatment plans based on local norms.
Analisis Perbedaan Kinerja Keuangan Sebelum dan Sesudah Kenaikan Harga Tiket pada PT. Garuda Indonesia (Persero) TBK
Authors: Khoir Miftahul , Kesuma Ali 
Published: July 2022

This study aims to determine the differences in financial performance before and after the ticket price increase policy at PT. Garuda Indonesia (Persero) Tbk. in 2016-2019. The technique used in sampling is the purposive sample technique. This research was analyzed using the Du Pont System analysis tool. To test the differences in financial performance using Paired Sample T-test. where the test was carried out using the SPSS application program. The results of the study based on the Paired Sample T-test show that the total assets turnover has differences after the ticket price increase, while current ratio, return on assets, return on equity, return on investment, net profit margin, and debt to equity ratio have no difference after a ticket price increase.
Tuning of Thermometric Performances of Mixed Eu–Tb Metal–Organic Frameworks through Single‐Crystal Coordinating Solvent Exchange Reactions
Authors: Kourtellaris Andreas , Lafargue‐Dit‐Hauret William , Massuyeau Florian , Latouche Camille , Tasiopoulos Anastasios J. , Serier‐Brault Hélène 
Published: July 2022

AbstractAn initial investigation on the employment of targeted structural alterations, achieved through the post‐synthesis modification method, for modulation of the thermometric properties of metal–organic frameworks (MOFs) is reported. The MOF Eu0.05Tb0.95‐NBDC (NBDC = 2‐amino‐1,4‐benzenedicarboxylate) is chosen as pristine material, and its terminal N,N‐dimethylformamide (DMF) molecules are exchanged by various terminal and chelating ligands through a single‐crystal‐to‐single‐crystal coordinating solvent exchange reaction. Temperature‐dependence luminescence studies reveal that all samples are highly sensitive in the medium range with a maximum relative sensitivity of 2.6% K−1 at 190 K for Eu0.05Tb0.95‐NBDC. In addition, a shift of 50 K of the operating temperature range is evidenced for the exchanged analogs. This is attributed to the occurrence of different deactivation pathways in the exchanged analogs due to the presence of N‐donor terminal or N/O‐donor chelating aromatic ancillary ligands in the place of DMF terminal ligands in the pristine material. Overall, this work provides insights into the role of terminal and chelating ligands on the thermometric properties of mixed Eu–Tb MOFs and proposes a promising strategy to control and modulate their thermometric performances.
Water‐Facilitated Nitromethane‐Mediated Cyclization of 2‐(Phenylvinyl)benzhydrols: Access to 1,3‐Diphenyl‐1H‐indenes with Antitumor Activity
Authors: Hauguel Camille , Tran Christine , Provot Olivier , Bignon Jérôme , Gandon Vincent , Hamze Abdallah 
Published: July 2022

AbstractThis work reports a mild and operationally accessible method for synthesizing 1,3‐diphenyl‐1H‐indene derivatives from N‐tosylhydrazones and bromobenzhydrols as readily available reactants. Moreover, the cyclization step does not require metal catalysis, the addition of an acid, or a very high temperature. We report a combined experimental and computational study on the mechanism of this cyclization. In addition, we demonstrate the utility of this methodology by synthesizing a large number of products, even on the gram‐scale, and by the obtention of new biologically relevant molecules.magnified image
Realistic and inexpensive ultrasound phantoms to demonstrate aortic aneurysm and aortic dissection
Authors: Rathbun Kimberly M. , Harryman Claire F. , Moore Corey 
Published: July 2022

AbstractIntroductionUsing ultrasound to evaluate for the presence of aortic pathology is a common procedure in the emergency department. Phantoms are models that are used to simulate clinical conditions for teaching ultrasound‐related skills. To date, no ‘homemade’ phantom has been created to model aortic aneurysms, and no phantoms exist to model aortic dissection.MethodsWe used several readily available, inexpensive ingredients to create ultrasound phantoms.ResultsThese phantoms realistically mimic aortic aneurysm and aortic dissection.DiscussionThese are the first ‘homemade’ phantoms that demonstrate aortic pathology.ConclusionsWe have created realistic, affordable, easily reproducible phantoms for use in teaching clinicians to use ultrasound when evaluating patients for aortic aneurysm and/or aortic dissection.
A 4‐Arm Small Molecule Acceptor with High Photovoltaic Performance
Authors: Meng Xianyi , Li Mingjie , Jin Ke , Zhang Lixiu , Sun Jie , Zhang Wenhua , Yi Chenyi , Yang Junliang , Hao Feng , Wang Guan‐Wu , Xiao Zuo , Ding Liming 
Published: July 2022

AbstractManipulating the backbone of small molecule acceptors (SMAs) is of particular importance in developing efficient organic solar cells (OSCs). The common design is constructing 2‐arm SMAs with linear or curved backbones. Herein, we report an acceptor 4A‐DFIC with a 4‐arm backbone unexpectedly generated in the reaction of an electron‐rich aromatic diamine and hexaketocyclohexane. Single‐crystal X‐ray diffraction analysis indicates the rigid and twisted molecular plane and the effective molecular stacking of 4A‐DFIC in solid state. 4A‐DFIC shows a low band gap of 1.40 eV and excellent light‐harvesting capability from visible to near‐infrared region. Binary and ternary OSCs based on 4A‐DFIC gave power conversion efficiencies (PCEs) of 15.76 % and 18.60 % (certified 18.1 %), respectively, which are the highest PCEs for multi‐arm SMA‐based OSCs to date.
Synthesis, Characterization and Reactivity of a σ‐Donating Ni0‐Stabilized Silyliumylidene Ion
Authors: Takahashi Shintaro , Frutos María , Baceiredo Antoine , Madec David , Saffon‐Merceron Nathalie , Branchadell Vicenç , Kato Tsuyoshi 
Published: July 2022

AbstractThe synthesis of a silyliumylidene cation complex2stabilized by a Ni0‐based donating ligand is reported. Experimental and theoretical studies demonstrate that the highly electrophilic SiIIcenter is stabilized by a dative Ni→Si σ‐interaction and π‐donations from the amino‐ and Ni‐moieties. Due to the energetically close frontier orbitals localized on the Si and Ni atoms, complex2presents a competitive reactivity at Si and Ni sites.
Desymmetric Cyanosilylation of Acyclic 1,3‐Diketones
Authors: Xu Pan , Shen Chang , Xu Aiqing , Low Kam‐Hung , Huang Zhongxing 
Published: July 2022

AbstractDiastereo‐ and enantioselective construction of vicinal stereocenters from easily available starting materials is a challenging task. Here, we report that a bifunctional catalyst prepared from dibutylmagnesium and a pipecolinol‐derived tetradentate ligand can enable an asymmetric cyanosilylation of 1,3‐diketones to forge a pair of neighboring and acyclic tetrasubstituted carbons. The high stereoselectivity results from the rigid conformation of the diketone in the catalyst pocket, where the Lewis acidic magnesium center, together with the free hydroxyl group as a putative hydrogen bond donor, bind with both carbonyls. Consequently, stereochemically well‐defined cyanohydrin silyl ethers with a diverse collection of substituents were prepared. Their rapid derivatization to molecules of higher complexity, such as heterocycles, triols, and fused rings, were also demonstrated.
Selenoviologen‐Appendant Metallacycles with Highly Stable Radical Cations and Long‐Lived Charge Separation States for Electrochromism and Photocatalysis
Authors: Zhang Sikun , Ma Lingzhi , Ma Wenqiang , Chen Long , Gao Kai , Yu Shi , Zhang Mingming , Zhang Lei , He Gang 
Published: July 2022

AbstractTwo coordinated metallacycles (rhomboid forM1, hexagonal forM2) with selenoviologens (SeV2+) pendants were synthesized via coordination‐driven hierarchical self‐assembly.M1/M2with rigid and discrete metallacyclic cores showed tunable optoelectronic properties due to strong π–π stacking and push–pull electron structures. Femtosecond transient absorption (fs‐TA) revealed that the formation of macrocyclic structure can not only enhance the stability of radical cation, but also improve the efficiency of intramolecular charge transfer and produce a long‐lived charge separation state. The electrochromic performances ofM1/M2‐based devices were exhibited to show decent radical stabilization. By usingM1/M2as the photocatalyst, the improved catalytic efficiency (>80 %) of visible‐light‐induced cross‐dehydrogenative coupling (CDC) reactions was achieved due to the highly stable radical cations and long‐lived charge separation states, which were also confirmed by fs‐TA.
Synthesis of α‐Aryl Acrylamides via Lewis‐Base‐Mediated Aryl/Hydrogen Exchange
Authors: Lemmerer Miran , Zhang Haoqi , Fernandes Anthony J. , Fischer Tobias , Mießkes Marianne , Xiao Yi , Maulide Nuno 
Published: July 2022

AbstractHerein we report a method for the synthesis of α‐aryl acrylamides leveraging polar S‐to‐C aryl migrations induced by a Lewis basic organocatalyst. In contrast to previously reported radical aryl migrations of sulfonyl acrylimides, this polar process enables subsequent elimination, ultimately leading to a formal aryl/hydrogen exchange including SO2 extrusion. This reaction is selective for electron‐deficient aromatic groups, while tolerating a variety of substituents on nitrogen and in the β‐position, and it delivers useful building blocks for further transformations, including cycloaddition and cyclisation reactions. The mechanism was investigated in detail using quantum chemical calculations, which unexpectedly revealed the Lewis base to be involved in several decisive steps.
Biomimetic Total Synthesis and Investigation of the Non‐Enzymatic Chemistry of Oxazinin A
Authors: Aniebok Victor , Shingare Rahul D. , Wei‐Lee Hsiau , Johnstone Timothy C. , MacMillan John B. 
Published: July 2022

AbstractWe report the first total synthesis of an antimycobacterial natural product oxazinin A that takes advantage of a multi‐component cascade reaction of anthranilic acid and a precursor polyketide containing an aldehyde. The route utilized for the synthesis of the pseudodimeric oxazinin A validates a previously proposed biosynthetic mechanism, invoking a non‐enzymatic pathway to the complex molecule. We found a 76 : 10 : 9 : 5 ratio of oxazinin diastereomers from the synthetic cascade, which is an identical match to that found in the fermentation media from the fungus Eurotiomycetes 110162. Further investigation of the non‐enzymatic formation of oxazinin A using 1H‐15N HMBC NMR spectroscopy allowed for a plausible determination of the stepwise mechanism. The developed route is highly amenable for the synthesis of diverse sets of analogs around the oxazinin scaffold to study structure–activity relationships (SAR).
Perioperative Nurse Recruitment: An OR Placement Program for Fourth‐Year Nursing Students in Ontario
Authors: Zekveld Karin , Berquist Renee 
Published: July 2022

ABSTRACTNursing associations have predicted a worldwide shortage of perioperative RNs as more nurses reach retirement age. Additionally, the lack of perioperative exposure during undergraduate nursing programs is contributing to the failure to attract recently graduated nurses to this field. In 2019, multiple hospital sites within the St. Lawrence College network in Ontario, Canada, expressed difficulty recruiting perioperative RNs and expressed an interest in collaborating with the college to increase exposure to the perioperative specialty and recruit students to their ORs after graduation. The college has run a successful preceptor‐supported OR placement program for fourth‐year baccalaureate nursing students since 2019. Eleven out of thirteen students were hired into the OR after their 2020–2021 placement program. This article outlines the steps taken to initiate this program as well as results of a formal program evaluation conducted in 2021, including detailed feedback from participating students, preceptors, and leaders at the involved hospitals.
Enhanced mechanical and tribological properties of epoxy‐based coatings by in‐situ synthesized silicon dioxide nanoparticles
Authors: Liao Yuwen , Cao Lin , Li Shuangjian , Lin Zhidan , Li Wei , Yu Chuanyong , Zhang Peng , Wang Qiwei 
Published: July 2022

AbstractFriction and wear behaviors severely inhibit the regular operation and lifetime of mechanical components served in the ocean extreme environment. Herein, we report a novel in‐situ synthesis strategy for fabricating silicon dioxide nanoparticles‐reinforced epoxy (EP)‐based composite coatings. The crystalline phases, sizes, morphologies, and reaction mechanism of the in‐situ‐synthesized nanoparticles were characterized, and the mechanical and tribological properties of the EP‐silicon dioxide based composite coatings were also investigated in detail. The results showed that the in‐situ‐synthesized nanoparticles with a size about 100–150 nm were in an amorphous state and were covalently grafted onto the epoxy resin matrix. The thermal stability, nano‐hardness and scratch‐resistance of the composite coatings have been significantly improved. Moreover, the appropriate nanoparticles greatly reduced the wear rates of the epoxy composite coatings, which decreased by two orders of magnitude than that of pure EP coating when their incorporation content reaches 20 wt%. Additionally, the wear rate of the 15 wt% composite coating under the seawater medium decreased by 79.5 compared to that of pure coating.
Facile strategy for the preparation of green graphene rubber with enhanced interfacial interaction and thermal management capability
Authors: Cheng Shuaishuai , Duan Xiaoyuan , Cui Yiwen , Liang Chaobo , Zhang Zhiyi , Zhao Guizhe , Liu Yaqing 
Published: July 2022

AbstractThe development of high‐performance green rubber materials with excellent comprehensive properties is very important for the environment and resources. Graphene has excellent electrical, mechanical, and thermal properties and is regarded as the most promising functional filler for rubber composites. In this work, a facile and efficient strategy was used to prepare graphene rubber materials with balanced integrated properties by chemical modification of graphene oxide (GO) with gelatin (Gel). Gel molecules as bridges could not only connect with GO by chemical bonds, but also physically entangle with natural rubber (NR) molecules. The optimized dispersibility of GO and the enhanced interfacial interaction between GO and NR together enable graphene rubber to exhibit excellent integrated properties, such as tensile strength of 29.7 MPa and heat build‐up of 1.9°C only at 1 phr of Gel‐rGO (G‐rGO) content. Additionally, finite element simulation was used to evaluate the temperature field distribution of graphene rubber tires, and the temperature of the NR/Gel‐rGO (NR/G‐rGO) tread was 17.3°C lower than that of NR/GO. This work will provide effective strategies for the preparation of high‐performance graphene rubber materials.
Microinjection molding of polyoxymethylene stepped‐parts: Morphology, crystallinity, shrinkage, and thermal characterization
Authors: Ben Ayad Anass , El Hakimi Abdelhadi , El Otmani Rabie , El Magri Anouar , Louanate Amal , Touache Abdelhamid , Boutaous M'hamed , Vaudreuil Sébastien 
Published: July 2022

AbstractThis paper addresses an experimental investigation of the microinjection molding process through three increasing sections of polyoxymethylene (POM) stepped parts. High and low levels of mold temperature and injection velocity were defined to evaluate the relationship between machine settings, melting and crystallization properties, morphology formation, and shrinkage. The internal morphology of parts showed a mix of structures, from the mold surface towards the core region of each section. Differential scanning calorimetry (DSC) tests highlighted the difficulty of concluding the relationship between the melting temperatures, the processing conditions, and the position of the samples within the mold. The skin‐layer crystallinity declines with increasing part‐step thickness, while the crystallinity degrees of intermediate and core layers are sensitive to the thermal gradients. It was also observed that crystallinity rises along with increasing thickness, benefiting from further polymer chain relaxation and perfection. The unsymmetrical mold cavity results in substantial differences in shrinkage. High shrinkage occurs across the thickness direction due to fast material solidification. The experimental results were supported by the calculated shear rates and temperature fields at the end of the mold‐filling phase. This work yields new insights into comprehending the intricate flow and thermal properties of stepped micropart geometries, which are widely encountered in the plastics manufacturing industry.