bluuebunny/crossref_metadata_2025 huggingface dataset:
Visualisasi Untuk Meningkatkan Pemahaman Butir Soal Cerita Matematika di Kelas VI MI Negeri 1 Yogyakarta
Authors: Mawarti Tutik
Published: February 2023

ABSTRAK

Tujuan – Penelitian ini bertujuan untuk mengetahui  pembelajaran dengan memvisualkan soal cerita ke bentuk gambar dapat meningkatkan prestasi belajar Matematika peserta didik MI Negari 1 Yogyakarta.

Metode – Jenis penelitian ini adalah penelitian tindakan kelas (PTK) yaitu kajian yang dilakukan secara sistematis dan reflektif terhadap berbagai tindakan guru dalam kegiatan belajar mengajar di dalam kelas sehingga dapat memperbaiki kualitas pembelajaran maupun kualitas prestasi belajar. Penelitian tindakan kelas ini dilaksanakan dalam dua siklus dengan 4 tahapan, yaitu perencanaan, pelaksanaan, pengamatan, dan refleksi. Subjek dalam penelitian ini adalah siswa kelas VI MI Negeri 1 Yogyakarta dengan jumlah 30 siswa. Teknik pengumpulan data dalam penelitian tindakan kelas ini adalah dengan teknik tes, observasi, dan dokumentasi. Analisis data menggunakan statistik deskriptif.

Hasil – Berdasarkan hasil penelitian diperoleh rata- rata 80,1 dengan persentase ketuntasan 60% pada siklus I menjadi rata-rata 86,5 dengan persentase ketuntasan 87% pada siklus II. Berdasarkan data tersebut dapat disimpulkan bahwa menvisualkan soal ke bentuk gambar dapat meningkatkan pemahaman soal cerita Matematika.
Evaluasi Program SKS dalam Upaya Meningkatkan Mutu Lulusan di MAN 4 Bantul
Authors: Sampurno Singgih
Published: February 2023

Tujuan – Penelitian ini bertujuan untuk mendeskripsikan evaluasi pelaksanaan program sistem kredit semester (SKS) di MAN 4 Bantul.

Metode – Penelitian ini merupakan penelitian evaluasi yang menggunakan pendekatan kualitatif. Model evaluasi yang digunakan adalah model evaluasi formatif yang dikembangkan oleh Scriven. Dalam penelitian ini, kriteria evaluasi ditetapkan sebelum pengumpulan data, yang dikembangkan melalui kajian pustaka dan berdasarkan pada pedoman penyelenggaraan program SKS yang disusun oleh Tim Pengelola SKS MAN 4 Bantul. Teknik analisis data yang digunakan adalah teknik analisis kualitatif menurut Miles dan Huberman yang meliputi empat kegiatan utama, yaitu: pengumpulan data, penyajian data, reduksi data dan penarikan kesimpulan.

Hasil – Hasil penelitian menunjukkan: (1) Sistem seleksi peserta program SKS dilakukan secara objektif dan transparan dengan menggunakan prosedur yang telah ditentukan oleh madrasah, (2) Pendanaan untuk program SKS bersumber dari dana BOS dan Komite (3) Fasilitas Layanan SKS  masih belum ideal, perlu disiapkan sarana prasarana pembelajaran yang memadai untuk terselenggaranya program SKS, dan (4) Prestasi belajar siswa SKS baik di bidang akademik, keagamaan maupun bidang non akademik perlu ditingkatkan dalam rangka persiapan ke PTN/PTS.
Upaya Meningkatkan Kemampuan Guru Madrasah Aliyah dalam Menyusun DUPAK Kenaikan Pangkat dengan Pendampingan Individu
Authors: Khoiriyatun Khoiriyatun
Published: February 2023

Tujuan – Penelitian ini bertujuan untuk mengetahui dan mendeskripsikan upaya peningkatan kemampuan guru dalam menyusun DUPAK kenaikan pangkat melalui pendampingan individu di MAN 1 Bantul.

Metode – Penelitian ini merupakan penelitian tindakan madrasah dengan populasi dalam penelitian yaitu guru PNS MAN 1 Bantul yang berjumlah 43 orang. Adapun sampel yang diambil adalah 15 orang guru. Penelitian dilakukan dalam kurun waktu 9 bulan, dari bulan Maret – November 2022. Penelitian ini dilakukan menggunakan model spiral atau siklus yang menurut Kemmis dan Taggart meliputi empat komponen, yaitu; perencanaan (planning), pelaksanaan (acting), pengamatan (observing), dan refleksi (reflecting). Adapun indikator  keberhasilan  penelitian  tindakan  kelas  ini  adalah  terjadinya peningkatan skor rata-rata pada tiap siklus dan mencapai ketuntasan klasikal ≥80%. 

Hasil – Berdasarkan hasil penelitian diperoleh faktor penyebab banyak guru PNS di MAN 1 Bantul tidak naik pangkat lebih dari 4 tahun antara lain, sikap apatis setelah mencapai golongan IVa, tidak ada motivasi dan semangat, kurangnya unsur pengembangan diri, sudah melakukan pengembangan diri namun tidak menyusun laporan, terkendala dalam membuat PI/KI, merasa nilainya belum cukup, kesulitan menyusun dan mengumpulkan berkas. Adapun pendampingan individu ternyata dapat meningkatkan kemampuan guru MAN 1 Bantul menyusun DUPAK kenaikan pangkat.
Upaya Meningkatkan Kemampuan Passing Bawah Dalam Pembelajaran Bola Volly Melalui Model Latihan Target Siswa Kelas VIII B MTsN 5 Sleman
Authors: Wahyu Furqan Nur
Published: February 2023

ABSTRAK

Tujuan – Tujuan penelitian ini adalah untuk meningkatkan kemampuan passing bawah dalam pembelajaran bolavoli melalui model latihan target bagi siswa kelas VIII B MTs N 5 Sleman tahun Pelajaran 2022/2023.

Metode – Jenis penelitian ini adalah Penelitian Tindakan Kelas yang dilaksanakan dalam 2 siklus. Subjek penelitian ini adalah seluruh siswa kelas VIII B yang berjumlah 32 siswa. Teknik Pengumpulan data yang dilakukan adalah tes unjuk kerja menggunakan brumbach forearms pass volleyball test dan observasi.

Hasil – Hasil penelitian menunjukkan bahwa pembelajaran passing dalam  permainan bolavoli melalui model latihan target meningkat. Hal ini dapat dilihat dari persentase ketuntasan belajar 32 siswa, pada kondisi awal jumlah siswa yang mencapai nilai KKM 76 baru 11 siswa atau 34.38%, pada siklus I meningkat menjadi 17 siswa atau 53.13%, kemudian pada siklus II meningkat menjadi 26 siswa atau 81.25%. Peningkatan hasil belajar passing dalam permainan bolavoli tersebut dapat dilihat dari tingkat ketuntasan nilai siswa pada siklus I dan siklus II. Pada siklus I persentase nilai ketuntasannya mencapai 53.13%, dan siklus II mencapai 81.25%. Peningkatan hasil belajar passing dalam permainan bola voli melalui model latihan target dari siklus I ke siklus II adalah sebesar 28.12%.
Reaktualisasi Politik Hukum Pancasila dalam Pembangunan Sistem Hukum Nasional
Authors: Mahanani Anajeng Esri Edhi , Maharani Andina Elok Puri
Published: February 2023

Artikel ini bertujuan untuk menganalisis reaktualisasi politik hukum Pancasila dalam upaya pembangunan sistem hukum nasional. Hasil pembahasan menyimpulkan bahwa pembangunan sistem hukum nasional yang diharapkan tentunya mengarah pada pembangunan hukum yang peka terhadap kebutuhan masyarakat, nilai-nilai asli Indonesia serta sanggup mengganti maupun menghapus hukum kolonial yang sampai dengan saat ini masih berlaku.
Pengajuan Pengujian AD/ART Partai Politik di Mahkamah Agung
Authors: Dzulqornain Rizqo , Nurrizky Ridho Hadi
Published: February 2023

Mahkamah Agung tidak dapat menguji AD/ART partai politik dikarenakan AD/ART partai politik bukan merupakan peraturan perundang-undangan. Dengan menggunakan doktrin konstitusionalisme, pengujian AD/ART Partai Politik di Mahkamah Agung dapat dilakukan. Tujuan dari penelitian ini adalah, pertama untuk menemukan constitutional important pengajuan pengujian AD/ART Partai Politik di Mahkamah Agung. Kedua, untuk menguraikan doktrin konstitusionalisme dalam memandang pengajuan pengujian AD/ART Partai Politik di Mahkamah Agung. Metode penelitian yang digunakan adalah penelitian doktriner dengan basis data sekunder. Urgensi penelitian ini adalah meneliti peran dan manfaat hukum dalam membuat terobosan dilakukannya pengujian AD/ART partai politik di Mahkamah Agung. Hasil penelitian menunjukkan: 1) terdapat 3 (tiga) alasan kebutuhan pengujian AD/ART partai politik. Pertama, penting secara konstitusional (constitutional important). Kedua, menjaga dari prosedur pembentukan dan pengakomodiran norma yang inkonstitusional akibat dari interaksi politik. Ketiga, pengejawentahan Pasal 28 dan Pasal 28J ayat (2) UUD NRI 1945; 2) AD/ART partai politik sekalipun bukan merupakan peraturan perundang-undangan tetap dapat diuji di Mahkamah Agung
Analisis Pelaksanaan Kebijakan Mpu Aceh Terhadap Lembaga Vertikal Lainnya Melalui Unsur Administratif Negara dalam Asas-asas Umum Pemerintahan yang Baik
Authors: Ghalib Muhammmad Farhan Al
Published: February 2023

Kebijakan Syari’at Islam menjadi pertimbangan yang menyeluruh terhadap segala kebijakan yang berhubungan terhadap Qanun yang dikeluarkan oleh Pemerintah Aceh. MPU Aceh memiliki peranan yang sangat penting dalam rangka pemantapan implementasi Syariat Islam di Aceh karena peran MPU sebagai pemberi pertimbangan kepada Pemerintah Aceh dan DPRA dalam pembentukan sebuah rancangan Qanun (Perda) Aceh. Tujuan dari penelitian ini adalah, Pertama untuk meninjau apakah lembaga MPU yang bersifat independen tersebut melakukan intervensi terhadap kebijakan lembaga lainnya. Kedua, untuk menilai apakah fatwa yang dikeluarkan oleh MPU jika tidak dijakankan akan memiliki dampak terhadap lembaga vertikal lainnya. Metode penelitian yang digunakan adalah penelitian doktrainer dengan basis data sekunder. Urgensi penelitian ini adalah meneliti kedudukan MPU terhadap lembaga vertikal lainnya dan melihat kekuatan fatwa MPU terhadap pengaruh keputusan lembaga vertikal lainnya. Hasil penelitian ini menunjukkan: 1) Kewenanangan MPU dalam mengeluarkan fatwa belum pernah terdapat adanya tumpang tindih kebijakan yang bertentangan, 2) Implikasi kebijakan dari MPU sangat mempengaruhi dan mengintervensi kondisi sosial serta menjadi pertimbangan terhadap lembaga vertikal lainnya. 3) Hubungan Tata kerja antara MPU dan lembaga Vertikal lainnya dimaksudkan untuk tidak adanya kontradiktif terhadap pelaksanaan Syariat Islam, namun fatwa yang dikeluarkan oleh MPU tidak dapat mengikat secara maksimal terhadap keputusan lembaga vertikal lainya karena hanya berbentuk rekomendasi yang dapat dijalankan atau tidak dijalankan.
Peraturan Presiden Nomor 10 Tahun 2021 Tentang Bidang Penanaman Modal Perspektif Siyāsah Tasyrīʻiyyah
Authors: Katrino Iqbal
Published: February 2023

Ditetapkannya Perpres Nomor 10 Tahun 2020 Tentang Bidang Penanaman Modal adalah konsekuensi dari sentralisasi perizinan yang digariskan dalam Undang-Undang Cipta Kerja. Namun demikian, pada lampiran tiga Perpres No 10 Tahun 2020 dinyatakan bahwa bidang usaha Industri Minuman Keras Mengandung Alkohol dan Industri Minuman Mengandung Alkohol: Anggur adalah legal dengan syarat tertentu yakni hanya berlaku di beberapa Provinsi saja yaitu Provinsi Bali, Provinsi Nusa Tenggara Timur, Provinsi Sulawesi Utara dan Provinsi Papua dengan memperhatikan budaya dan kearifan setempat. Hal inilah yang menuai banyak protes di khalayak publik seperti Majelis Ulama Indonesia (MUI), Nahdlatul Ulama (NU), Muhammadiyyah dan beberapa Partai politik di parlemen turut mengkritik Perpres ini seperti dari Fraksi Partai Amanat Nasional (PAN) dan Partai Keadilan Sejahtera (PKS), dengan alasan ada sebuah masa depan generasi bangsa yang lebih besar untuk dipertimbangkan kebaikannya daripada hanya sekedar kepentingan ekonomi sesaat. Berangkat dari persoalan di atas, penulis menyimpulkan Penetapan Peraturan Presiden Nomor 10 Tahun 2021 Tentang Bidang Penanaman Modal dalam prinsip-prinsip Siyāsah Tasyrî’iyah yakni, “berangsur-angsur dalam menetapkan hukum; menyedikitkan pembuatan Undang-Undang; memberikan kemudahan dan keringanan. penetapan Perpres ini adalah untuk meningkatkan pendapatan negara dan dearah di bidang ekonomi mencerminkan pendekatan yang holistik.
Tinjauan Demokrasi Partisipatif dan Peluang Penerapan E-Vote pada Pemilu 2024
Authors: Failaq Muhammad RM Fayasy , Madjid Mario Agritama S W
Published: February 2023

Abstrak: Pelaksanaan Pemilu merupakan sebuah cerminan kedaulatan rakyat dari penerapan konsep demokrasi sebagaimana yang diatur dalam Pasal 1 ayat (2) UUD 1945. Salah satu wacana yang hangat dibicarakan terkait Pemilu ini adalah penggunaan teknologi pemilihan elektronik (e-vote) untuk menekankan efisiensi, efektivitas, serta partisipasi masyarakat sebagai pemilih. Tujuan dari penelitian ini adalah untuk mengkaji bagaimana studi tentang E-Vote yang akan ditinjau dengan konsep demokrasi partisipatif dan peluang e-vote apabila diterapkan pada Pemilu tahun 2024. Jenis penelitian yang digunakan, yaitu yuridis normatif dengan metode library research. Sumber data yang digunakan adalah data sekunder yang terdiri dari bahan hukum Primer,  Sekunder dan Tersier. Hasil dari penelitian ini menunjukan bahwa sekalipun berpotensi meningkatkan partisipasi sebagaimana beberapa kasus kecil yang terjadi di Indonesia, peluang untuk menerapkan E-Vote pada Pemilu 2024 belum siap. Ketidaksiapan Indonesia untuk menerapkan E-Vote dapat dilihat dari belum memadainya kapasitas masyarakat Indonesia yang paham akan teknologi, lemahnya keamanan data cyber Indonesia, dan  belum memadainya infrastruktur internet di berbagai wilayah di Indonesia.Kata Kunci: Peluang, E-Vote, Pemilu 2024
Institutionalization of Media Market in Greek Political System
Authors: Knopek Jacek
Published: February 2023

The article points to the process of the institutionalization of the Greek media market. This process began to take shape after the country’s accession to the European structures, i.e. after 1981. Successively since the late 1980s, it has been shaped based on new initiatives, forms and activities. However, this process is not yet completed due to the changes that have taken place over the last decade. At that time, the members of the National Broadcasting Council, for procedural reasons related to the mode of appointment to this Council, were unable to grant or renew broadcasting licences, which led to a media crisis. In addition, the Greek state was on the brink of solvency due to the condition of its finances. The new government created another media related institution, this time the General Secretariat for Information and Communication, which reported directly to the Prime Minister, and its aim was to control the press, radio and television market. Apart from the leading institutions, supporting bodies are also responsible for the Greek media market. To a large extent, they (such as ministries or central offices like the Telecommunications and Postal Commission) existed much earlier and some media powers were handed over to them to assist the leading institutions in fulfilling their functions. Outside of this area, there was content disseminated on the Internet, which came under the control of a special unit established within the police structures.
Bestandserhaltung als Massengeschäft – Das neue Bestandserhaltungskonzept des Bundesarchivs
Authors: Boden Ragna , Hänger Christian , Niederhut Jens , Förstner Dirk , John Kristina
Published: February 2023

Angesichts des rasanten Wachstums seiner Bestände und Magazinstandorte sowie zunehmender technischer Möglichkeiten konzentriert sich das Bundesarchiv stärker denn je auf zeitgemäße massentaugliche Lösungen der Bestandserhaltung. Das Anfang 2022 veröffentlichte neue Bestandserhaltungskonzept erläutert die Grundsätze. Im Sinne einer umfassenden Bestandserhaltung auf der Basis internationaler fachwissenschaftlicher Erkenntnisse verbindet das Bundesarchiv in großem Maßstab Lagerungsthemen einschließlich Bauplanungen mit der Mitgestaltung einschlägiger, auch internationaler, Normen, mit Risikomanagement, dem Vorantreiben der weiteren Professionalisierung in der Restaurierung und dem Ausbau der Digitalisierung.
Die Modellierung des Kontexts. Ein objektorientierter Ansatz zur automatisierten Verarbeitung digitaler Archivalien mittels signifikanter Eigenschaften
Authors: Steffenhagen Björn
Published: February 2023

Die Planung und Umsetzung von Bestandserhaltungsmaßnahmen an Informationsobjekten stellt Archive vor große Herausforderungen. Mit den Ergebnissen von Projekten wie CEDARS, InSPECT wie auch des nestor-Leitfadens Bestandserhaltung liegen der Fachwelt verschiedene konzeptionelle Vorarbeiten vor. In diesem Artikel soll das aus der IT bekannte Konzept der Objektorientierung betrachtet und auf seine Einsatzfähigkeit für die Bestandserhaltungsplanung hin diskutiert werden. Im Ergebnis kann aus den bisherigen praktischen Erfahrungen des Landesarchivs Sachsen-Anhalt ein bisher positives Fazit zur Reduktion des Arbeitsaufwands und der Modellierungsmöglichkeit gezogen werden.
Stochastic optimal and time-optimal control studies for additional food provided prey–predator systems involving Holling type III functional response
Authors: Prakash Daliparthi Bhanu , Vamsi Dasu Krishna Kiran
Published: February 2023

This article consists of a detailed and novel stochastic optimal control analysis of a coupled non-linear dynamical system. The state equations are modelled as an additional food-provided prey–predator system with Holling type III functional response for predator and intra-specific competition among predators. We first discuss the optimal control problem as a Lagrangian problem with a linear quadratic control. Second, we consider an optimal control problem in the time-optimal control setting. We initially establish the existence of optimal controls for both these problems and later characterize these optimal controls using the Stochastic maximum principle. Further numerical simulations are performed based on stochastic forward-backward sweep methods for realizing the theoretical findings. The results obtained in these optimal control problems are discussed in the context of biological conservation and pest management.
Excellent photocatalytic degradation of rhodamine B over Bi2O3 supported on Zn-MOF nanocomposites under visible light
Authors: Zhang Qiuyun , Wang Dandan , Yu Rongfei , Luo Linmin , Li Weihua , Cheng Jingsong , Zhang Yutao
Published: February 2023

In this article, Bi2O3@Zn-MOF hybrid nanomaterials were synthesized by supporting Zn-based metal–organic framework (Zn-MOF) through the hydrothermal method. X-ray diffractometer, Fourier transform infrared, scanning electron microscopy, energy-dispersive X-ray, N2 physisorption, X-ray photoelectron spectroscopy, and UV-Vis were used to characterize the physical and chemical properties of Bi2O3@Zn-MOF nanomaterials. The photocatalytic activity of the as-prepared hybrid has been studied over the degradation of rhodamine B (RhB). A catalytic activity of 97.2% was achieved using Bi2O3@Zn-MOF nanocomposite with the loading of 0.18 g Bi2O3, after 90 min of exposure to visible light irradiation, and the high photocatalytic performance was mainly associated with the nanorod structures, larger pore size, and broaden visible light absorption region due to the synergistic effect of the constituting materials. Furthermore, the Bi2O3@Zn-MOF nanocomposite can be reused three times and the degradation rate of RhB was maintained at 77.9%. Thus, the Bi2O3@Zn-MOF nanocomposite can act as a potential photocatalyst for the photodegradation of organic dyes in environmental applications.
Using imagined partners to enhance esports performance
Authors: Forlenza Samuel Thomas
Published: February 2023

With the growing popularity of esports, performance psychology consultants – and players themselves – are looking at how esports athletes can perform better. Many esports are team-based, meaning that performance depends not just on an individual’s skill level, but on how well each individual works with their teammates. While several group dynamics processes have been identified in esports settings that could play a role in team performance, these processes may also affect individuals. Esports athletes can use imagery to simulate partner and team interactions to help improve their individual performance, in turn helping their team succeed. This article will outline relevant group dynamics processes that affect esports teams and individuals, discuss how esports athletes can combine imagery with group dynamics, and close with several recommendations for using imagined teammates to enhance effort and performance.
Centralized vowels in Muduga
Authors: Arsenault Paul , Abraham Binny
Published: February 2023

Proto-Dravidian had a system of ten vowels consisting of five qualities (i, e, a, o, u), each with short and long counterparts. Some South Dravidian languages have expanded systems with innovative vowels that are described as centralized or retroflex. However, the phonetic nature of the vowels, and the list of languages that have them, remain poorly described. We present evidence that Muduga, a South Dravidian language of Kerala, is among the languages with expanded vowel systems. It has five innovative vowel qualities, three of which can be considered phonemic. Historical-comparative evidence indicates that the new qualities result from: (i) retraction of front vowels before retroflex consonants and alveolar /r/; and (ii) fronting of back vowels before alveolar and palatal consonants (except /r/ and /j/). Loss of conditioning consonants in some contexts has led to emergent contrasts. Acoustic phonetic analysis of two male speakers suggests that the new vowels are centralized along the front-back axis, but not retroflex or rhotacized. We compare these results to related developments in other South Dravidian languages and discuss correlations between retroflexion and retraction that motivate the observed patterns.
Scheduling equal-length jobs with arbitrary sizes on uniform parallel batch machines
Authors: Xin Xiao , Khan Muhammad Ijaz , Li Shuguang
Published: February 2023

We consider the problem of scheduling jobs with equal lengths and arbitrary sizes on uniform parallel batch machines with different capacities. Each machine can only process the jobs whose sizes are not larger than its capacity. Several jobs can be processed as a batch simultaneously on a machine, as long as their total size does not exceed the machine’s capacity. The objective is to minimize makespan. Under a divisibility constraint, we obtain two efficient exact algorithms. For the general problem, we obtain an efficient 2-approximation algorithm. Previous work has shown that the problem cannot be approximated to within an approximation ratio better than 2, unless P = NP, even when all machines have identical speeds and capacities.
Digital laser-induced printing of MoS2
Authors: Logotheti Adamantia , Levi Adi , Naveh Doron , Tsetseris Leonidas , Zergioti Ioanna
Published: February 2023

Due to their atomic-scale thickness, handling and processing of two-dimensional (2D) materials often require multistep techniques whose complexity hampers their large-scale integration in modern device applications. Here we demonstrate that the laser-induced forward transfer (LIFT) method can achieve the one-step, nondestructive printing of the prototypical 2D material MoS2. By selecting the optimal LIFT experimental conditions, we were able to transfer arrays of MoS2 pixels from a metal donor substrate to a dielectric receiver substrate. A combination of various characterization techniques has confirmed that the transfer of intact MoS2 monolayers is not only feasible, but it can also happen without incurring significant defect damage during the process. The successful transfer of MoS2 shows the broad potential the LIFT technique has in the emerging field of printed electronics, including printed devices based on 2D materials.
Constructing high-quality 1D nano/microwire hybrid structure for high-performance photodetectors based on CdSe nanobelt/perovskite microwire
Authors: Ren Li , Tan Qiuhong , Gao Kunpeng , Yang Peizhi , Wang Qianjin , Liu Yingkai
Published: February 2023

All-inorganic perovskite CsPbBr3 is considered as a promising photoelectric material due to its high environmental stability and excellent photoelectric properties. Constructing low-dimension hybrid structures by combining CsPbBr3 with semiconductor materials have recently attracted particular attention because they may bring new functionalities or generate synergistic effects in optoelectronic devices. Herein, the high-quality 1D CdSe nanobelt (NB)/CsPbBr3 microwire (MW) photodetectors are designed first time, which exhibit excellent performance as integrating I
on/I
off ratio of 5.02 × 104, responsivity of 1.63 × 103 A/W, external quantum efficiency of 3.8 × 105% and detectivity up to 5.33 × 1012 Jones. These properties are all improved at least one order of magnitude compared to those of single CsPbBr3 photodetectors. Moreover, the response range is broadened from the 300–570 nm (the single CsPbBr3 device) to 300–740 nm (the hybrid photodetector). Then, the first-principles calculations are carried out to reveal the physical mechanism from the atomic scale. The remarkably improved optoelectronic properties are attributed to the high crystalline quality as well as unique band alignment of hybrid structure that facilitate the effective separation and transport of photogenerated carriers. These works indicate that 1D CdSe/CsPbBr3 hybrid devices have promising applications in building high-performance and broader spectral response photodetectors and other optoelectronic devices.
The crystal structure of 2-(2-fluoro-4-methyl-5-((2,2,2-trifluoroethyl)thio)phenyl)isoindolin-1-one, C17H13F4NOS
Authors: Zhang Jing , Zhang Lixin
Published: February 2023

C17H13F4NOS, triclinic,

P

1
‾

$P\overline{1}$

(no. 2), a = 6.1249(7) Å, b = 9.9306(10) Å, c = 13.1754(13) Å, α = 83.116(8)°, β = 80.305(9)°, γ = 73.204(9)°, V = 754.08 Å3, Z = 2, R

gt
(F) = 0.0460, wR

ref
(F
2) = 0.1078, T = 150 K.
Formulation and characterisation of lacidipine niosomal gel for transdermal delivery
Authors: Mapari Salika Santosh , Mary DCruz Cleona Elizabeth , Kumar Lalit , Bhide Prashant Jivaji , Shirodkar Rupesh Kalidas
Published: February 2023

The present study aimed to enhance the transdermal delivery of lacidipine by niosomal vesicles. Lacidipine niosomes were generated using the ultrasonic method, and Span 60 was used as a nonionic surfactant. Formulations were prepared containing Span 60 and cholesterol in 1:1 and 2:1 ratios, respectively, with essential oils added at increasing concentrations. The formulated niosomes had nano-vesicles with entrapment efficiency ranging from 75.81% to 91.25% and in-vitro drug release ranging from 80.61% to 89.81%. The optimal formulation was selected based on particle size, entrapment efficiency and in-vitro drug release. Optical microscopy and high-resolution transmission electron microscopy studies revealed a spherical shape of the niosomal vesicles. Fourier transform infrared spectroscopy, differential scanning calorimetry and X-ray diffraction studies confirmed complete encapsulation of the drug in the niosomal vesicles. The optimized formulation was also incorporated into a gel base, which was then evaluated for appearance, pH, viscosity, spreadability, in vitro drug release and stability. Overall, the results indicated that the developed niosomal lacidipine vesicles may provide an alternative to existing delivery systems for this drug.
DIE ROLLE DER LEHRKRAFT ALS MODERATORIN LERNENDER GEMEINSCHAFTEN IN VIRTUELLEN, BINATIONALEN AUSTAUSCHPROJEKTEN – ANFORDERUNGEN AN DIE GESTALTUNG VON AUFGABEN UND GRUPPENPROZESSEN
Authors: Schöne Karin
Published: February 2023

The article evaluates the influence of teachers on the successful design of group work in virtual exchange projects. It is based on experience and data from surveys obtained as part of the exchange of language courses at the Technical University of Liberec and the Technical University of Dresden. The data are evaluated in the context of the “Communities of Inquiry” concept. The focus is on the demands placed on teacher support (Teaching presence). Particular attention is paid to the involvement of students in the process of moderating and managing learning processes and related mediation requirements. The article concludes with suggestions for organizational and didactic support for binational, virtually assembled teams at lower levels of linguistic competence.
ZOBRAZOVÁNÍ MODERNÍ ŽENY A MOTIV SEBEOBĚTOVÁNÍ V NOVÉ VIETNAMSKÉ LITERATUŘE
Authors: Lien Vrbková Julie , Schwarz Michal
Published: February 2023

In this article, we follow up on a commentary on the anthropology of social relations in contemporary Vietnam. The topic was presented at a literary conference in Spain under the title “New Forms of Devotion and Self-Sacrifice of Beautiful Women in the Vietnamese Romantic Literature of Tự lực văn đoàn”. The theme of the self-sacrifice of heroines in literature helps to illuminate how the authoritative norms of traditional Vietnamese society interact with the influences of Western culture. The issue is touched upon at two levels: at the level of historical change and in reflection of the “Tự lực văn đoàn” literary movement. First, we characterize the literary movement as a whole. After introducing the writers and their typical heroes, we focus on one author: Khái Hưng, and the main features of his work. In the commentary, we discuss the content of his novel In the Midst of Spring. By characterizing the protagonist, we try to interpret the position of women in Vietnamese literature and society during the colonial period. She mirrors strong social tensions. Ultimately, literary works have contributed significantly to a better perception and position of women in Vietnamese society.
Antimony-doped lead oxide nanoparticles synthesized via using chemical precipitation and annealing treatments: structural and optical properties
Authors:   Department of Physics, Faculty of Liberal Arts and Science, Kasetsart University Kamphaeng Saen Campus, Nakhon Pathom 73140, Thailand, Srichai K. , Krataitong C. ,   Department of Physics, Faculty of Liberal Arts and Science, Kasetsart University Kamphaeng Saen Campus, Nakhon Pathom 73140, Thailand, Tubtimtae A. ,   Department of Physics, Faculty of Liberal Arts and Science, Kasetsart University Kamphaeng Saen Campus, Nakhon Pathom 73140, Thailand
Published: February 2023

Lead antimony oxide nanoparticles (Pb1-xSbxO NPs) were synthesized by chemical precipitation and annealing treatments. The structural and optical properties of undoped and various Sb3+ -doped PbO NPs were investigated. The tetragonal phase of -PbO was found for both before and after various Sb3+ doping. The lattice parameters decreased for the 1.0 – 5.0 wt% Sb3+ doping, which indicated the increase of internal defects, but tends to an amorphization with exceeding 5.0 wt%. The overall band gap (Eg) values after Sb3+ doping (1.071.76 eV) are lower than undoped PbO (2.35 eV). These findings indicate a promising material for window layer fabrication and an absorber material for solar cell applications.
10.15251/DJNB.2020.154.1017
Authors:   Pharmaceutical Sciences Department, College of Pharmacy-3163, King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia, AL WASSIL O. , OMER M. E. ,   Pharmaceutical Sciences Department, College of Pharmacy-3163, King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia, YASSIN A. E. B. ,   Pharmaceutical Sciences Department, College of Pharmacy-3163, King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia, AHMAD D. ,   Pharmaceutical Sciences Department, College of Pharmacy-3163, King Saud Bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
Published: February 2023

Nanotechnology has surmounted various application in drug delivery despite divergent challenges in physical, surface properties and reproducibility of preparation method. Ultrasensitive analytical methods are highly demanded in order to monitor the very minute drug concentrations obtained during drug release studies as a result of the extensive prolongation in the release rate achieved in all nano-particulate drug delivery systems. A simple, rapid, sensitive, reversed-phase isocratic RP-HPLC method for determination of valsartan (Val) was developed. The method was applied for quality control tests including entrapment efficiency and drug release for Val-loaded nano-structured lipid carriers (NLC). The method was carried out using Eclipsed XBD column (Agilent -PN 993967) C18 (150 mm x 3.0, 5μm particle size) with mobile phase composed of acetonitrile: phosphate buffer (60:40) at pH 3.6, 0.01 M. The flow rate was set at 1.0 ml/min and effluent was detected at 273nm. The retention time of valsartan was found to be 2.910 minute. The method was validated for specificity, accuracy, precision, linearity, and limit of detection, limit of quantification and robustness. Limit of detection (LOD) and limit of quantification (LOQ) were found to be 6.0 and 25 ng/ml respectively. The calibration curve was linear in the concentration range of 39.06-2500 ng/ml with coefficient of correlation 0.9992. The percentage recovery for Val was found to be 99.86-100.06 and the % RSD was found to be less than 2 %. The proposed method was free from any interference and successfully applied for quantitative determination of valsartan in lipidbased nano-particulate systems.
INVESTIGATION OF DIELECTRIC PROPERTIES OF COMPOSITE NANOFLUID WITH SURFACTANT
Authors:   Department of Electrical and Electronics Engineering, KCG College of Technology, Chennai 600 097, India, GAYATHRI R. , DEIVA SUNDARI P. ,   Department of Electrical and Electronics Engineering, KCG College of Technology, Chennai 600 097, India
Published: February 2023

Mineral oil in transformer is replaced by the ester oil due to its biodegradability and good thermal & dielectric properties. Ester oil plays a vital role in enhancing the design of high voltage apparatus, as it has better electric and thermal properties. In this paper, the impact of dielectric properties on the mixture of 20% ester oil and 80% mineral oil, due to the effect of TiO2 nanoparticles was studied. The optimum volume concentration of TiO2 nanoparticles was found based on the Corona Inception Voltage (CIV) and Break Down Voltage (BDV) and also the optimum concentration of nanoparticles having CTAB surfactant and having oleic acid surfactant was analyzed. The solubility of TiO2 in composite fluid depends upon the percentage weight of nanoparticles and surfactant. It is concluded that Titania (TiO2) nanoparticles dispersed composite oil having CTAB surfactant has greater CIV and BDV when compared to the oleic acid surfactant. It is also found that Negative Direct Current (NDC) voltages have higher breakdown voltage than Positive Direct Current (PDC) voltages and AC voltages. The statistical analysis depending upon the CIV and BDV of the composite oil, nanofluid and nanofluid with surfactants were made.
TUNING SURFACE ROUGHNESS OF ELECTROSPUN POLY CAPROLACTONE FIBRES BY SINGLE SOLVENT ELECTROSPINNING SYSTEM
Authors:   Textile Research Group, Faculty of Applied Sciences, Universiti Teknologi MARA, 40450, Shah Alam, Selangor, Malaysia, AFFANDI N. D. N. , IBRAHIM N. A. ,   Textile Research Group, Faculty of Applied Sciences, Universiti Teknologi MARA, 40450, Shah Alam, Selangor, Malaysia, FADIL F. ,   Textile Research Group, Faculty of Applied Sciences, Universiti Teknologi MARA, 40450, Shah Alam, Selangor, Malaysia
Published: February 2023

Secondary surface texture or surface roughness is having a powerful impact on morphological variety and magnifies the application areas of electrospun fibres. This paper for the first time assesses the formation of varying degrees of surface pores on electrospun poly caprolactone (PCL) fibres by using a single solvent system. PCL solutions were prepared by dissolving PCL granules in dichloromethane (DCM) at the concentration of 5, 10, 15 and 20% (w/v), before being subjected to the electrospinning process at lower kV values of 5, 10 and 15, respectively. The morphology of electrospun fibres was characterised by field emission scanning electron microscope (FESEM). The resultant PCL fibres showed a highly porous surface was formed at lower PCL concentration. The surface roughness of PCL fibres was increased gradually with the increment of PCL concentration. The formation of porous surface was mainly due to the fast phase separation process while pore size and pore size distribution was found to depend on the blend composition.
RESEARCH ON THE MECHANICAL AND TRIBOLOGICAL BEHAVIOR OF SOFT-SOFT CONTACT INTERFACE OF ARTICULAR CARTILAGE
Authors:   School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou 221116, China, ZHANG T. , CHEN K. ,   School of materials and Physics, China University of Mining and Technology, Xuzhou 221116, China, WU M. ,   School of materials and Physics, China University of Mining and Technology, Xuzhou 221116, China, XU L. ,   School of materials and Physics, China University of Mining and Technology, Xuzhou 221116, China, ZHANG D. ,   School of materials and Physics, China University of Mining and Technology, Xuzhou 221116, China
Published: February 2023

AC stands the reciprocating friction generated by sports in life. Based on the "soft-soft" contact form of AC in human body, AC specimens acquired from the fresh and healthy bovine knees are selected as the research object in this experiment to study the mechanical and tribological characteristics of AC/AC contact pair. The results show that the creep value of AC is much greater with the increase of the load. The friction coefficient of AC/AC contact pair is significantly lower than that of CoCrMo alloy/AC. The friction coefficient increases with the increase of the load.
SYNTHESIS, CHARACTERIZATION AND PHOTOCATALYTIC APPLICATIONS OF S-DOPED GRAPHITIC CARBON NITRIDE NANOCOMPOSITES WITH NICKEL DOPED ZINC OXIDE NANOPARTICLES
Authors:   Department of chemistry, School of Science, University of Management and Technology, Lahore, Pakistan, JAVED M. , ABID M. A. ,   Department of Chemistry, University of Sahiwal, Sahiwal, Pakistan, HUSSAIN S. ,   Department of Chemistry, Lahore Garrison University, DHA Phase VI, Lahore, Pakistan, SHAHWAR D. ,   Department of chemistry, School of Science, University of Management and Technology, Lahore, Pakistan, ARSHAD S. ,   Department of chemistry, School of Science, University of Management and Technology, Lahore, Pakistan, AHMAD N. ,   Department of chemistry, School of Science, University of Management and Technology, Lahore, Pakistan, ARIF M. ,   Department of chemistry, School of Science, University of Management and Technology, Lahore, Pakistan, KHAN H. ,   Department of chemistry, School of Science, University of Management and Technology, Lahore, Pakistan, NADEEM S. ,   Department of chemistry, School of Science, University of Management and Technology, Lahore, Pakistan, RAZA H. ,   Department of chemistry, School of Science, University of Management and Technology, Lahore, Pakistan, HARRON S.M. ,   Department of chemistry, School of Science, University of Management and Technology, Lahore, Pakistan
Published: February 2023

Coprecipitation method was adopted for the synthesis of undoped and Ni-doped zinc oxide nanoparticles. The photocatalytic activity of the synthesized particles was examined by degradation of methylene blue under UV bulb. The S-doped graphitic carbon nitride was obtained by calcination of thiourea and composites were formed with S-doped graphitic carbon nitride and nickel doped zinc oxide nanoparticles using liquid exfoliation method. The ethanol and water were used as solvents for the liquid exfoliation. The photocatalytic activity was performed under UV and visible light by using a UV-visible spectrophotometer with different concentrations of composites for the degradation of methylene blue. The doping of nickel on zinc oxide nanoparticles and formation of sulfur doped graphitic carbon nitride composites were confirmed by FTIR and XRD analyses. The FTIR analysis sowed a signal at 838cm-1 due to the presence of Ni-O bond. The peaks at 3649cm-1 and 3735cm-1 confirmed the presence of amide group. The shift in absorption maxima from 364nm to 376nm (red shift) in UV spectrum was a confirmation of increased Ni content. The different concentrations of composites showed great impact on the degradation of methylene blue.
STRUCTURAL, OPTICAL AND DIELECTRIC PERFORMANCE OF MOLYBDENUM TRIOXIDE THIN FILMS SANDWICHED WITH INDIUM SHEETS
Authors:   Department of Physics, Arab American University, Jenin, Palestine, ABUSAA M. , QASRAWI A. F. ,   Department of Physics, Arab American University, Jenin, Palestine, KMAIL H. K. ,   Department of Physics, Arab American University, Jenin, Palestine, KHANFAR H. K. ,   Department of Telecommunication Engineering, Arab American University, Jenin, Palestine
Published: February 2023

In this work, we report the enhancements in the structural, optical and dielectric properties of molybdenum trioxide that are achieved by insertion of 50 and 100 nm thick indium sheets between layers of MoO3. The films which are coated onto ultrasonically glass substrates under a vacuum pressure of 10-5 mbar exhibited metal induced crystallization process upon insertion of indium sheets. Optically, indium sheets tuned the transmittance and reflectance, significantly, increased the absorption coefficient values and formed interbands in the band gap of MoO3. The energy band gap decreased with increasing indium sheets thickness. On the other hand, the insertion of indium layers into the structure of MoO3 is observed to improve the dielectric response of these films to values that nominate them for used in thin film transistor technology. In the same context, the analyses of the optical conductivity which are carried out with the help of Drude-Lorentz approach have shown that the presence of indium sheets can increase the optical conductivity and enhance the plasmon frequency and free charge carrier density of MoO3. The plasmon frequency is tuned in the range of 1.68-7.16 GHz making MoO3 films attractive for plasmonic applications.
ENHANCED RED EMISSION OF 1D CaYAl3O7: Eu3+ PHOSPHOR VIA CO-DOPING Sm 3+ OR Li+ /Na+ /K+ PREPARED BY ELECTROSPINNING
Authors:   School of Material Science & Engineering, Qilu University of Technology Shandong Academy of Sciences, Jinan, Shandong, 250353, PR China, LI Q. , ZHANG Y. F. ,   School of Mechanical & Automotive Engineering, Qilu University of Technology Shandong Academy of Sciences, Jinan, Shandong, 250353, PR China, LIU Q. ,   School of Material Science & Engineering, Qilu University of Technology Shandong Academy of Sciences, Jinan, Shandong, 250353, PR China, WANG Z. L. ,   School of Mechanical & Automotive Engineering, Qilu University of Technology Shandong Academy of Sciences, Jinan, Shandong, 250353, PR China, JU C. ,   School of Mechanical & Automotive Engineering, Qilu University of Technology Shandong Academy of Sciences, Jinan, Shandong, 250353, PR China
Published: February 2023

In this study, a series of one-dimensional CaYAl3O7: Eu3+ and CaYAl3O7: Eu3+, R (R = Sm3+or Li+ , K+ , Na+ ) phosphors were synthesized by electrospinning. The formation, structure and photoluminescence properties of the phosphors were examined by thermogravimetric differential thermal analysis (TG-DTA), x-ray powder diff raction (XRD), scanning electron microscope (SEM) and photoluminescence spectroscopy (PL). The results show that one-dimensional materials with well crystallization were obtained, and the diffraction peaks of the samples are in good agreement of standard card (JCPDS: 49-0605). The emission spectrum is dominated by a red peak centered at 617 nm due to the 5D0 → 7F2 transition of Eu3+ ions. Concentration quenching occurs when the Eu3+ concentration is about 13 mol %, and the critical transfer distance of the phosphor is also calculated. With the increase of the concentration of doped Sm3+ ions, the luminescent intensity increased, and reached the maximum at the Sm3+ concentration of 10 mol %. The energy transfer processes between Sm3+ and Eu3+ is investigated in detail. Furthermore, Li+ , Na+ and K+ ions were designed as charge compensators to maintain the charge balance of CaYAl3O7: Eu3+, and the luminescence intensities can be eff ectively enhanced, especially by Li+ ion.
ELECTROSPUN POLYCAPROLACTONE/SILK FIBROIN NANOFIBERS LOADED WITH CURCUMIN FOR WOUND DRESSING APPLICATIONS
Authors:   Department of Textile Engineering, Faculty of Engineering, Ege University, Izmir, Turkey, CAGLAYAN B. , BASAL G. ,   Department of Textile Engineering, Faculty of Engineering, Ege University, Izmir, Turkey
Published: February 2023

This study aims to develop an active wound dressing material from polycaprolactone /silk fibroin (PCL/SF) blend nanofibers and curcumin (CU), as a therapeutic agent. PCL is a widely used polymer in biomedical application, but its hydrophobic characteristic restricts its use in wound dressings. SF was blended with PCL in order to overcome this limitation. Results showed that SF improved the water take up capacity and hydrophilicity of PCL nanofibers, but also decreased their strength. When CU was added to spinning solution of PCL/SF nanofibers average fiber diameter increased dramatically. Nanofibers became more hydrophilic, but also weaker. In-vitro release study revealed that a burst release of CU from nanofibers within first 3 hours followed by a sustained slow release up to 240 hours.
CHARACTERIZATION OF SILVER CONTENT UPON PROPERTIES OF NANOSTRUCTURED NICKEL OXIDE THIN FILMS
Authors:   Al-Nahrain Nanorenewable Energy Research Centre, Al-Nahrain University, Baghdad, Iraq, SALLOOM H. T. , HADI E. H. ,   Department of Physics, College of Education, Mustansiriyah University, Baghdad, Iraq, HABUBI N. F. ,   Department of Physics, College of Education, Mustansiriyah University, Baghdad, Iraq, CHIAD S. S. ,   Department of Physics, College of Education, Mustansiriyah University, Baghdad, Iraq, JADAN M. ,   Department of Physics, College of Science, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, 31441 Dammam, Saudi Arabia, ADDASI J. S. ,   Department of Physics, College of Science, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, 31441 Dammam, Saudi Arabia
Published: February 2023

The influence of two silver contents (2% and 4%) on NiO films were studied in terms of structural and optical properties. Ag doped NiO films were grown on glass and n-type silicon substrates heated at 400C by chemical pyrolysis method. Optical transmission measurements showed up to 60% transparency in the visible area for undoped NiO and decreased with increasing Ag content. X-ray diffraction assures the existence of epitaxial growth with the c-axis. Average particle size, surface roughness and energy gap were decreased also. Rectifying characteristics of junctions deposited films on n-type silicon has been analyzed. Transparent conductive films showed excellent properties to be adopted for solar cells and optical sensors.
Co-Ni CARBONATE HYDROXIDE NANONEEDLES SELF-SUPPORTED ON Ni FOAM AS A BIFUNCTIONAL CATALYST FOR OVERALL WATER SPLITTING
Authors:   School of Mechanical Engineering, Chengdu University, Chengdu 610106, Sichuan, PR China, WANG X. L. , FENG W. ,   School of Mechanical Engineering, Chengdu University, Chengdu 610106, Sichuan, PR China, AN X. G. ,   School of Mechanical Engineering, Chengdu University, Chengdu 610106, Sichuan, PR China, LU C. ,   School of Mechanical Engineering, Chengdu University, Chengdu 610106, Sichuan, PR China, BAI W. J. ,   School of Mechanical Engineering, Chengdu University, Chengdu 610106, Sichuan, PR China, SUN F. Y. ,   School of Mechanical Engineering, Chengdu University, Chengdu 610106, Sichuan, PR China, KONG Q. Q. ,   School of Mechanical Engineering, Chengdu University, Chengdu 610106, Sichuan, PR China
Published: February 2023

High performance non-noble bi-functional electrocatalysts are highly demanded towards low-cost water splitting. Herein, Co-Ni carbonate hydroxide nanoneedles self-supported on Ni foam were prepared by a facile hydrothermal method. When it is assembled as the cathode and the anode in a two-electrode configuration, the combined cell demonstrates excellent catalysis performance, with a current density of 10 mA cm-2 at 1.62 V, due to the one-dimensional shape and hybrid amorphous/crystalline structure of Co-Ni carbonate hydroxide.