bluuebunny/crossref_metadata_2025 huggingface dataset:
Synthesis and Blue Emission Properties of Co-Doped CdS Semiconductor
Nanoparticles
Authors: Sambasivam Sangaraju , Kumar Yedluri Anil , Muralee Gopi Chandu V.V. , Narayanaswamy Venkatesha , Obaidat Ihab M.
Published: July 2021

Background:

Cadmium sulfide (CdS) based semiconductors are of great interest for different
high-end applications because they pose a direct bandgap (2.42 eV). CdS are used as the main
constituent material in many applications, namely solar cells, electroluminescent, and quantum dot
light-emitting diodes. Transition metal-doped CdS revealed considerable influence in the bandgap,
photoluminescence properties and peak energy upon increasing the metal content.

Objective:

In this work, we study the single-phase cubic structure of CdS. Photoluminescence spectra
revealed a strong blue emission peak located at about 445 nm.

Methods:

We investigate the Co-doping CdS semiconductor nanoparticles prepared via the chemical
co-precipitation method using thiophenol as template, 300 °C/2h in vacuum optimum temperature and
period of annealing to yield nanosized particles. Morphology and structural studies of the particles
were using XRD, and TEM, respectively.

Results:

XRD and TEM studies for the calcined samples revealed a cubic structure. The crystalline
size was in the range of 10-17 nm. Thermogravimetric analysis (TGA) was employed to stabilize the
temperature of annealing for the samples. The blue shift in the spectra and the band gap value of Codoped
CdS nanoparticles were estimated using UV-vis absorption spectra. Photoluminescence spectra
revealed a strong blue emission peak around 445 nm indicating the presence of surface states within
the bandgap region, which is a characteristic feature of nanoparticles.

Conclusion:

XRD analysis indicated zinc blend structure and the intensity decreased with increasing
Co content. TEM images show that the particles are spherical in shape with average sizes around 13
nm. Luminescence of the synthesized nanoparticles exhibited blue emission between 400 – 500 nm
with the peak located at about 445 nm. The emission intensity increased with the increase in Co concentration.
Pengaruh Penambahan Asam Lemak Pada Pakan Ternak Ruminansia Terhadap Kandungan Nutrisi Pakan
Authors: Ndaru Poespitasari Hazanah , Huda Asri Nurul , Mashudi Mashudi
Published: July 2021

Tujuan penelitian ini adalah mengevaluasi pengaruh penambahan beberapa jenis saturated fatty acid pada level yang berbeda terhadap nilai nutrisi dan kecernaan pakan, karakteristik fermentasi rumen, dan produksi gas CH4. Tahapan penelitian ini terdiri dari 2 tahap yaitu tahap 1 (pembuatan pakan perlakuan) dan tahap 2 (pengujian pakan perlakuan). Metode penelitian ini adalah menggunakan adalah RAK (Rancangan Acak Kelompok), yang terdiri dari 7 perlakuan yang meliputi pakan lengkap dengan penambahan 0% fatty acid, myristic acid (10%), myristic acid (20%), lauric acid (10%), lauric acid (20%), palmitic acid (10%) dan palmitic acid (20%) dengan 3 ulangan. Pada penelitian yang berjudul â€œPengaruh Penambahan Fatty Acid Pada Pakan Ternak Ruminansia dengan Rasio Berbeda Sebagai Upaya Mengurangi Produksi Gas CH4â€ ini merupakan inovasi strategi pemberian pakan ternak ruminansia dengan menerapkan teknologi berwawasan lingkungan sebagai upaya mengurangi efek gas rumah kaca dari sektor industri peternakan yang merupakan pendonor gas CH4 terbesar kedua di dunia. Berdasarkan hasil penelitian disimpulkan bahwa kandungan bahan kering pakan perlakuan yaitu berkisar antara 92,09% - 92,90%, kandungan bahan organik pada penelitian ini 86%, sehingga sejumlah 86% nutrient dapat dimanfaatkan ternak untuk hidup pokok dan berproduksi, kandungan protein kasar pada penelitian ini berkisar 14%, hal ini menujukkan bahwa penelitian ini isoprotein, dan semakin tinggi level penambahan asam lemak pada pakan dapat meningkatkan kandungan lemak kasar pakan penelitian, hal ini akan efektif dalam mengurangi produksi gas CH4.Â
CO2 mineralization of demolished concrete wastes into a supplementary cementitious material – a new CCU approach for the cement industry
Authors: Zajac Maciej , Skocek Jan , Skibsted Jørgen , Ben Haha Mohsen
Published: July 2021

This contribution discusses the carbon capture and utilization (CCU) approach based on CO2 mineralization of cement paste from recycled concrete as new approach to capture CO2 and significantly contribute to the reduction in CO2 emissions associated with cement production. The current literature suggests that all CO2 released from the decomposition of limestone during clinker production can be sequestered by carbonation of the end-of-life cement paste. This carbonation can be achieved in a few hours at ambient temperature and pressure and with a relatively low CO2 concentration (< 10 %) in the gas. The carbonation of cement paste produces calcite and an amorphous alumina-silica gel, the latter being a pozzolanic material that can be utilized as a supplementary cementitious material. The pozzolanic reaction of the alumina-silica gel is very rapid as a result of its high specific surface and amorphous structure. Thus, composite cements containing carbonated cement paste are characterized by a rapid strength gain. The successful implementation of this CCU approach relies also on improved concrete recycling techniques and methods currently under development to separate out the cement paste fines and such. Full concrete recycling will further improve the circular utilization of cement and concrete by using recycled aggregates instead of natural deposits of aggregates.  Although the feasibility of the process has already been demonstrated at the industrial scale, there are still several open questions related to optimum carbonation conditions and the performance of carbonated material in novel composite cements.
Learning Application for Kids based on Artificial Intelligence
Authors: Shukla Pushkal Kumar
Published: July 2021

In this fast-moving technological era, a child gets access to mobile phones rather than "Toys" in its childhood. This early exposure to technology gives rise to the demand for a mobile phone app that will help the child to learn new things for the upcoming educational phases of their life. Artificial intelligence is making computers "intelligent", which is helping us in pragmatic ways; thus, it will help our descendants similarly. The main objective is to develop an application using artificial intelligence in android for learning purposes. OpenCV library, Android Studio, Numpy and Game Studio have been used by the authors of this paper. Some memory games and free drawing space have also been added to make the learning enjoyable.
Ser galinha. Ou: o estado de galinha, em Clarice Lispector / Chicken being. Or chicken state, in Clarice Lispector
Authors: Pimentel Davi Andrade
Published: July 2021

Este artigo se propõe a apresentar a relevância da concepção de estado de galinha, formulada por nós, na construção textual da obra de Clarice Lispector. Visto, sobretudo, da perspectiva do alheamento do real, o estado de galinha está presente tanto nos textos em que o animal galinha é retratado, quanto nos textos em que os personagens humanos, em sua maioria femininos, optam por esse alheamento do mundo real, próprio do animal galinha, como atestam muitos dos narradores claricianos. Desse modo, podemos concluir que o estado de galinha se inscreve na obra de Lispector por duas vias: enquanto tema, como observamos, por exemplo, no conto “Amor”, presente em Laços de família; e enquanto efeito criador, como constatamos, por exemplo, na estrutura em formato de ovo do conto “O ovo e a galinha”, presente em A legião estrangeira. Dada a devida importância do tema para as questões do nosso presente, este artigo será dividido em dois momentos: no primeiro, pretendemos definir o conceito de estado de galinha e a sua reverberação textual a partir das ações dos personagens humanos; e, no segundo, discutiremos a diferença supostamente existente entre o olhar do animal e o olhar humano.
“Os adultos como eu também criam lendas”: Clarice Lispector e a escrita para crianças
Authors: Araújo Wanderley Naelza
Published: July 2021

Ao se debruçar sobre a produção literária de Clarice Lispector, dificilmente o leitor encontrará, entre as principais referências para conhecimento da obra dessa autora, a indicação de textos que fazem parte da escrita lispectoriana dedicada ao público infantil, como o conjunto de lendas que compõem o livro Doze lendas brasileiras: como nasceram as estrelas, obra elaborada a partir de um processo de reescritura de contos populares. Ainda assim, textos infantis de Clarice são constantemente reeditados e consumidos por leitores ávidos de suas mininarrativas. Destarte, este estudo pretende discorrer sobre o processo de reescrita desenvolvido pela autora no reconto das narrativas populares em suas doze lendas, tornando ainda mais desafiadora uma classificação para sua escrita, que, também através de narrativas infantis, continua fazendo da literatura um espaço de diálogo entre o homem e o tempo presente.
Overtreatment and undertreatment in a sample of elderly people with diabetes
Authors: AL-Musawe Labib , Torre Carla , Guerreiro Jose , Rodrigues Antonio , Raposo Joao Filipe , Mota-Filipe Helder , Martins Ana Paula
Published: July 2021

Aims In older adults with type 2 diabetes (T2D), overtreatment remains
prevalent and undertreatment ignored. The main objective is to estimate
the prevalence and examine factors associated with potential
overtreatment and undertreatment Method Observational study conducted
within an administrative database of older adults with T2D who
registered in 2018 at the Portuguese Diabetes Association. Participants
were categorized either as potentially overtreated (HbA1c≤7.5%),
appropriately on target (HbA1c≥7.5–≤9%), or potentially undertreated
(HbA1c>9%). Results of 444 participants, potential
overtreatment, and undertreatment were found in 60.5% and 12.6% of the
study population. Taking the patients on target as a comparator, the
group of potentially overtreated showed to be more males (61.3%
vs.52.2%), less-obese (34.1% vs.39.2), higher cardiovascular diseases
(13.7% vs.11%), peripheral vascular diseases (16.7% vs.12.8%),
diabetic foot (10% vs.4.5%), and severe kidney disease (5.2%
vs.4.5%). Conversely, the potentially undertreated participants were
more females (64.2% vs.47.7%), obese (49% vs.39.2%), had more
dyslipidemia (69% vs.63.1%), peripheral vascular disease (14.2%
vs.12.8%), diabetic foot (8.9% vs.4.5%), and infections (14.2%
vs.11.9%). The odds of potential overtreatment were mostly decreased by
59% of females, 73.5% in those with retinopathy, and 86.3% in
insulin, 65.4% sulfonylureas, and 66.8% in SGLT2 inhibitors users.
Contrariwise, an increase in the odds of potential undertreatment was
more than 4.8times higher in insulin, and more than 3.1times higher in
sulfonylureas users. Conclusion potential overtreatment and
undertreatment in older adults with T2D in routine clinical practice
should guide the clinicians to balance the use of newer oral
antidiabetic agents considering its safety profile regarding
hypoglycemia.
Development and Evaluation of Palm-based Tibetan Butter Equivalent: Formulation, Rheology, Texture and Microstructure
Authors: Ma Chuan-Guo , Li Jie-Yu , Ji Min , Hao Yoong Jun , Chen Xiao-Wei
Published: July 2021

Palm-based Tibetan butter equivalent was developed and evaluated from
formulation, rheology, texture to microstructure. Firstly, the
compatibility of palm stearin and palm olein was ascertained. The
formulations of palm-based Tibetan butter equivalent were then optimally
developed using a combination of palm stearin (37.5%), palm olein
(37.5%) and soybean oil (25%). These were found to contain high
unsaturated fatty acids and analogous solid fat content (SFC) at varying
temperatures. Moreover, the palm-based Tibetan butter equivalent (TBE)
showed a shear-thinning behavior, a gel characteristic, good plasticity
and comparable texture characteristics (such as hardness, adhesion,
cohesiveness and elasticity) to traditional Tibetan butter (TB).
Furthermore, as determined by polarized light microscopy (PLM) and
confocal laser scanning microscopy (CLSM), the microstructures also
showed a similar structure, thus further indicating that palm oil is a
good candidate as a substitute in making Tibetan-style butter. Overall,
the palm-based Tibetan butter equivalent was developed by physical
technology and could assist in increasing the enjoyable population as
well as addressing the challenge of resource shortage, geographical
origin and season of production.
Influence of alumina addition on structural and catalytic properties of sulphated zirconia in isomerization of n-hexane
Authors: Zarubica Aleksandra , Krstic Jugoslav , Popovic Dejan , Krstic Aleksandra , Ljupkovic Radomir , Randjelovic Marjan , Matovic Branko
Published: July 2021

New binary catalytic systems based on sulphated zirconia-alumina were
synthesized by controlled hydrolysis of alkoxides using relative molar
ratios of constituents 1:1, 1:2 and 1:3 in favour of zirconia. The obtained
differences in the final catalytic material?s properties may be related to
organic precursor memory effect, the applied calcinations temperatures and
used alumina contents. The addition of alumina to zirconia affected the
structural and surface properties stabilizing bare zirconia by means of
slower phase transformation of tetragonal zirconia crystal phase into
monoclinic one, further resulting in smaller crystallites sizes and higher
surface density of acidic function (sulphates). The best alumina impact on
physico-chemical properties was achieved when the highest amount of alumina
(e.g. 50%) and lower calcination temperature (500?C) were used, causing
relatively high steady-state activity in isomerization of n-hexane at
reaction temperature 250 ?C. On the other hand, higher calcination
temperature (600 ?C) played a role in the genesis of greater sulphate
density. Catalytic activity and selectivity are expressed as a complex
synergistic function of relative density of acid sites together with
positive status of other optimized physico-chemical properties of the
catalytic material (by activation and calcination temperatures).
Improved thermal stability of SiCf/SiC ceramic matrix composites fabricated by PIP process
Authors: Gu Jian , Lee Sea-Hoon , Kim Daejong , Lee Hee-Soo , Kim Jun-Seop
Published: July 2021

Improvement of the thermal stability of continuous SiC fiber reinforced SiC
ceramic matrix composites (SiCf/SiC CMC) by the pre-treatment of SiC fillers
and the suppression of oxidation during polymer impregnation and pyrolysis
(PIP) process were investigated. Dense SiCf/SiC CMCs were fabricated using
the slurry infiltration and PIP process under a purified argon atmosphere.
Structure and mechanical properties of the SiCf/SiC CMC heated at different
temperatures were evaluated. The flexural strength of the SiCf/SiC CMC
decreased only 15.3%after heating at 1400 ?C, which exhibited a clear
improvement compared with the literature data (49.5% loss), where severe
thermal deterioration of SiCf/SiC composite occurred at high temperatures by
the crystallization and decomposition of the precursor-derived ceramic
matrix. The thermal stability of the SiCf/SiC CMC fabricated by PIP process
was improved by the pre-treatment of SiC fillers for removing oxides and the
strict atmosphere control to prevent oxidation.
Why are the institutional injustice and the lack of fairness omnipresent in Serbia? A pragmatic assessment of plural orders of worth
Authors: Jankovic Stefan , Tokovic Milena
Published: July 2021

Recent results from Round 9 of the European Social Survey (ESS) indicate that
Serbia differs from other European countries in terms of justice and
fairness. Whereas the Serbian people?s dissatisfaction relating to unjust
income distribution, unfair employment chances and political institutions
may not be surprising, these findings still raise a dozen questions.
Situated within contemporary discussions on normativity in sociology and
survey methodology, this paper aims to reassess the moral grammar of these
judgments. By endorsing tenets of pragmatic sociology and its principal aim
to recognize the plural modes of valuation and criticism and reflective
capacities of social actors to judge and evaluate, this paper develops
around few major points. First, we underline how most major approaches to
axiology remain stuck in a co-determinist framework, thereby renewing a
number of dualisms. Instead, we opt for a relational approach and further
present how the theoretical model of Boltanski and Thev?not enables the
locating of different assessments of worth. After setting our methodological
framework against the ?externalist? epistemology, we explore our key
assumption that the above-mentioned high rates come as a problem of a
feasible ?truce? between the domestic regime and the civic polity, ruled by
proclaimed legality, representativeness and impersonal character. We trace
the problem of incorporating multiple arrangements as a problem of
generality, by relating these to two layers of information acquired through
the ESS. One involves the analysis of the domestic polity covering the
household situation in terms of organization and unveiling the specific
worth given to care and protection. Another layer is derived from regression
analysis which affirms that the absence of fairness in civic polity
correlates with a higher degree of worth given to the domestic one, but also
that the latter situation depicts a deeper ontological puzzle about making a
mild transition to the assumed ?horizontality? of civic matters.
Cyanobacteria and algae from biofilm at the entrance zone of Petnica Cave
Authors: Popovic Sladjana , Petrovic Kristina , Trnavac-Bogdanovic Dusica , Milosevic Dragana , Graovac Ana , Trbojevic Ivana , Subakov-Simic Gordana
Published: July 2021

The importance of biofilms in caves, the diversity of microorganisms in them,
their mutual relationship and relationship with the substratum are among the
advancing research topics in microbial biospeleology. This research is
making contribution to the knowledge about biofilms at cave entrances and
phototrophic communities in them. In that manner, biofilms from the entrance
zone of the Petnica Cave were examined. Light microscopy showed that
cyanobacteria were exclusively dominant phototrophs (34 taxa out of 39 total
taxa recorded) with coccoid forms prevailing (28 taxa); simple trichal forms
were present to a lesser extent, while heterocytous ones were completely
absent. Genera Gloeocapsa, Chroococcus,Gloeothece and Leptolyngbya were the
most diverse. Four green algal genera characteristic for aerophytic habitats
(Apatococcus, Desmococcus, Haematococcus and Trentepohlia) were also
recorded, while Bacillariophytawere observed sporadically. Three groups of
sampling sites were distinguished based on recorded taxa, their richness and
similarity, using non-metric multidimensional scaling (NMDS). Quantitative
biofilm characteristics were also assessed - the content of chlorophyll a
(Chl a) was determined, as well as the contents of water, organic and
inorganic matter. Chl a had a significant positive correlation with the
content of organic matter (r=0.904, P=0.013).
Makna Tari Gandai Bagi Masyarakat Desa Tunggang
Authors: Utami Yulianti Mayangsari Putri , Fitriani Erda
Published: July 2021

Artikel ini bertujuan untuk menjelaskan makna simbol tari gandai bagi masyarakat Desa Tunggang, Kecamatan Pondok Suguh, Kabupaten Mukomuko. Penelitian ini menjadi menarik karena tari gandai masih dilaksanakan oleh masyarakat desa ini ditengah maraknya masuk musik atau tari yang bernuasa modern terutama yang dilaksanakan pada upacara perkawinan. Selain daripada itu penelitian ini berbeda dari penelitian sebelumnya yang sudah ada, karena berupaya menggali secara holistik makna tari gandai makna tarian gandai bagi masyarakat. Penelitian ini dilakukan dengan menggunakan pendekatan kualitatif dengan jenis penelitian etnografi. Teknik pemilihan informan dengan menggunakan teknik snowball sampling, dengan jumlah informan sebanyak 20 orang. Pengumpulan data dilakukan dengan cara observasi, wawancara mendalam, studi dokumen, dan teknik Analisis data yang digunakan dalam penelitian ini yaitu model analisis etnografi yang diperkenalkan oleh Clifford Geertz.Teori Interpretivisme Simbolik ini memusatkan pada kebudayaan didasarkan penafsiran dan melalui penafsiran tersebut manusia mengontrol sikap dan perilakunya, menjalankan suatu kebiasaan dan keyakinan yang didapat oleh individu dan masyarakat sebagai warisan yang diperoleh dan harus dijalankan. Berdasarkan pada hasil penelitian, diperoleh kesimpulan, terdapat makna simbol dari tari gandai yang bermakna nilai moral dan kebersamaan, simbol dari berbalas pantun yang mengandung makna kehidupan percintaan mempelai, sindiran kepada penonton, sindirian kepada keluarga jauh yang sudah lama tidak pulang, kemudian simbol gerakan yang memiliki makna kehidupan sehari-hari, mulai dari gerakan hewan, cara bercocok tanam dan juga bermakna kegigihan masyarakat dalam kehidupan dan musik sebagai komponen pelengkap yang harus ada dalam gandai dan sebagai pengantar makna dari tarian gandai dengan menyesuaikan tema dari tari gandai.
Sistem Pembelajaran Berbasis Teknologi Informasi Dan Komunikasi “Studi Kasus MAS TI Canduang dengan Menggunakan Media Pembelajaran Google Classroom”
Authors: Syah Ardian , Tasrif Elfi
Published: July 2021

Pandemi covid-19 memberikan dampak pada dunia pendidikan sehingga proses belajar dilakukan secara online. Media yang paling sering digunakan dalam proses belajar secara online adalah google classrom. Penelitian ini bertujuan untuk mengetahui gambaran sistem belajar secara online dengan media google classroom yang dilakukan oleh MAS TI Canduang Sumatera Barat. Penelitian dilakukan dengan metode kualitatif deskriptif dengan instrumen penelitian wawancara online dengan menggunakan google form. Analisa data digunakan dengan tahap reduksi data, display data dan penarikan kesimpulan. Diperoleh bahwa dengan adanya media google classrom memberikan kemudahan dalam proses pembelajaran secara online, namun masih kurang efektif. Perlunya media online tambahan seperti aplikasi zoom yang dapat melakukan conference secara massal agar pembelajaran dapat berlangsung secara efektif.
Penggunaan E-Modul Dengan Sistem Project Based Learning
Authors: Padwa Tivsi Rizqi , Erdi Putri Nurhalimah
Published: July 2021

Pendidikan adalah sebuah peranan penting dikehidupan manusia. Pendidikan berkaitan dengan proses belajar dan mengajar. Tujuan pembelajaran yaitu diharapkan kemampuan dari peserta didik seimbang. Belajar juga adalah proses mental yang mengakibatkan sebuah perubahan yang terjadi pada diri seseorang. Proses pembelajaran akan berjalan dengan baik jika didukung dengan tersedianya sumber belajar mengajar yang memadai, media yang menarik, dan system pembelajaran yang tepat. Media pembelajaran saat ini beraneka ragam dan berkembang sesuai perkembangan teknologi. Salah satu media pembelajaran yang mengikuti perkembangan teknologi saat ini adalah yaitu media pembelajaran E-modul dengan menggunakan system berbasis elektronik. E-modul memiliki tujuan dapat mempermudah peserta didik dalam mempelajari setiap materi pembelajaran serta peningkatan hasil belajar di setiap mata pelajaran. Sejauh ini sudah banyak yang mengembangkan dengan e-modul dengan beberapa model system pembelajaran. Salah satunya dengan system pembelajaran Project based learning yang juga merupakan pembelajaran yang inovatif, kreatif, dengan berpusat pada siswa yang menempatkan guru sebagai motivator dan fasilitator. Pembelajaran dengan menggunakan e-modul ternyata bahkan lebih efektif dan mudah dipahami oleh perserta didik.
Deskripsi Analisis Kebutuhan: Pengembangan Media Pembelajaran Berbasis Animated Demonstrations pada Sekolah Menengah Kejuruan dan Teknologi
Authors: Ali Muttaqin Kholis
Published: July 2021

Studi penelitian pendahuluan ini membahas tentang kebutuhan media pembelajaran bagi guru dan siswa di Sekolah menengah Kejuruan. Studi penelitian pendahuluan ini terdiri atas studi lapangan dan studi literatur. Tujuan dari penelitian ini adalah ; 1) Mengetahui kebutuhan Guru akan media pembelajaran yang sesuai dan dapat membantu siswa memahami konsep Jaringan Komputer; 2) kendala yang dihadapi oleh guru di lapangan selama mengajarkan materi Jaringan Komputer; 3) untuk mengetahui apa media pembelajaran yang perlu dikembangkan pada Jaringan Komputer. Model dalam penelitian ini adalah model 4D (empat-D) yang dikembangkan oleh S. Thiagarajan et al. Ada empat langkah dalam model 4D (empat-D) ini, adalah sebagai berikut: define (define phase), desain (fase desain), kembangkan (fase pengembangan), dessiminate (fase dessiminate). Penilaian kebutuhan dilakukan pada fase define. Penilaian kebutuhan dilakukan dengan menggunakan instrumen penilaian kebutuhan dalam bentuk quisionaire, melalui observasi dan wawancara. Hasil dari penelitian ini diperoleh bahwa: 1) Guru dan siswa sudah memanfaatkan media dalam pembelajaran, tetapi dalam pelaksanaannya masih sering menggunakan model ceramah,diskusi dan penugasan; 2) konsep materi jaringan dasar merupakan material yang sulit untuk disampaikan, khususnya pada material abstrak. Guru membutuhkan media pembelajaran untuk visualisasi dan dapat mendemonstrasikan materi, serta guru dapat mengajar secara efektif; 3) media pembelajaran yang perlu dikembangkan pada Jaringan Komputer adalah media pembelajaran berbasis animated demonstration, sehingga siswa dapat lebih mudah memahami materi pembelajaran menggunakan media pembelajaran berbasis animated demonstration.
PENGEMBANGAN MEDIA PEMBELAJARAN INTERAKTIF BERBASIS PROBLEM BASED LEARNING PADA PEMBELAJARAN TEMATIK
Authors: Tambunan Kartini , Sitompul Harun , Mursid R
Published: July 2021

Abstrak: Tujuan penelitian ini untuk mengetahui  kelayakan media pembelajaran interaktif berbasis problem based learning yang dipergunakan pada pembelajaran tematik di SD Swasta Islam An-Nizam Kecamatan Medan Denai dan mengetahui keefektifan penggunaan media interaktif berbasis problem based learning pada pembelajaran tematik di SD Swasta Islam An-Nizam Kecamatan Medan Denai. Adapun subjek dari penelitian ini adalah siswa kelas V SD Swasta Islam An-Nizam yang berjumlah 25 orang.  Sebagai objek dalam penelitian ini adalah media pembelajaran, skala respon siswa terhadap media pembelajaran dan tes hasil belajar siswa. Model pengembangan yang akan digunakan untuk mengembangkan perangkat media pembelajaran dalam penelitian ini adalah model Thiagarajan yang dikenal dengan Four-D (Model 4-D). Model 4-D diplih karena sistematis dan sesuai untuk mengembangkan perangkat pembelajaran. Hasil penelitian yaitu  media interaktif berbasis problem based learning yang dipergunakan pada pembelajaran tematik di SD Swasta Islam An-Nizam Kecamatan Medan Denai layak digunakan. Media interaktif berbasis problem based learning pada pembelajaran tematik di SD Swasta Islam An-Nizam Kecamatan Medan Denai efektif digunakan. Kata Kunci : Pengembangan Video Pembelajaran,  Hasil Belajar MatematikaAbsract: The purpose of this study is to determine the feasibility of interactive learning media based on problem based learning which is used in thematic learning at SD Swasta Islam An-Nizam Medan Denai and to know the effectiveness of the use of interactive media based on problem based learning on thematic learning at SD Swasta Islam An-Nizam Medan Denai. The subject of this research is the students of class V SD Swasta Islam An-Nizam Medan Denai  which amounted to 25 people. As object in this research is media of learning, scale of student response to instructional media and test result of student learning. The development model that will be used to develop learning media device in this research is Thiagarajan model known as Four-D (Model 4-D). The 4-D model is compiled because it is systematic and appropriate for developing learning tools. The result of the research is interactive media based on problem based learning which is used in thematic learning at An-Nizam Private Islamic Elementary School of Medan Denai District. Interactive media based on problem based learning on thematic learning at SD Swasta Islam An-Nizam Medan Denai District effectively used. Keywords: Development, Interactive Media and Problem Based Learning
The Relevance of Bird-in-Hand Theory to ShariahInclined Investors: A Case Study of Malaysia
Authors: Morni Fareiny , Iskandar Azreil Mirzza , Banchit Azilawati
Published: July 2021

The purpose of this study is to identify whether the wealth of Shariah-inclined investors is affected by dividend policy. This study is different from other studies because earlier studies do not differentiate between Shariah-compliant and non-Shariah compliant stocks, creating a gap for dividend signaling theory and bird-in-hand theory on Shariah-compliant financial products. This study employs panel data analysis and multiple linear regression with the most recent data representing eight (8) out of twelve (12) sectors in the Malaysian stock market. Dividend per share and retained earnings per share are used as a proxy for dividend policy while market price per share is used as a proxy for shareholders’ wealth. It was found that for Shariah-compliant stocks, both dividend per share and retained earnings per share are insignificant in affecting shareholders’ wealth. Unlike other studies on dividend policy which do not discriminate between Shariah-compliant and non-Shariah compliant stocks, this study finds that dividend policy to be irrelevant to Shariah-inclined investors.
Empirical Analysis on Household Savings in Malaysia
Authors: Mohamed Yousop Nur Liyana , Wan Zakaria Wan Mohd Farid , Ahmad Zuraidah , Abdul Manan Ahmad A'thif
Published: July 2021

The Malaysian household saving growth has shown weakened patterns from year to year. Low-income level, overspending and black swan economic events result in nosedived household savings. To explain this issue, this study empirically examined factors affecting household savings in Malaysia. The analysis was based on time-series data gathered from World Bank Data, CEIC Data and Department of Statistic of Malaysia from 1970 until 2018. The ordinary least square (OLS) regression analysis was used to examine the significant relationship among dependent variable (household savings, proxy gross domestic savings) and independent variables which consist of interest rate, inflation rate, age dependency ratio, consumption expenditure and income. The findings from this study reveal that the interest rate and household consumption expenditure have significant negative relationships with the household savings, while age dependency ratio, inflation rate and income have insignificant relationships with the household savings.
CHRISTIAN DIMENSIONS OF VIOLENCE: THE SÉLÉKA/ANTI-BALAKA MILITIAS AND THE LORD’S RESISTANCE ARMY IN THE CENTRAL AFRICAN REPUBLIC
Authors: ALECU Ana Raluca , MIROIU Andrei
Published: July 2021

Beginning in 2013, the Central African Republic has been engulfed in a civil war pitting successive governments against a substantial number of armed groups who also compete against each other for control over territory, population and resources. Some of these groups are claiming to be defenders of religious groups in the country, with the Séléka militias fighting for the Muslim communities and the anti-Balaka groups claiming Christian roots and inclinations. Other religiously inspired armed groups such as the Lord’s Resistance Army are also present in the country. The following study is an attempt to understand how the “religious” label can be applied to such armed groups and whether it can influence their behavior, thus bringing into light a valuable, albeit lesser known example on how AGs and religion are connected in contemporary Africa.
LES PRINCIPES REGISSANT L’EXPULSION DES ÉTRANGERS À LA LUMIÈRE DE LA JURISPRUDENCE DE LA CEDH, LA CIJ ET LA PRATIQUE DES ORGANES DE CONTRÔLE ONUSIENS
Authors: IRAGI NTWALI Valéry
Published: July 2021

The principles ruling foreigners' expulsion in the light of the jurisprudence of the ECHR, of the ICJ and of the practice of the UN control bodies. Expulsion as a measure for the removal of foreigners from a State is governed by number of principles, which must be respected by the State having resorted to expulsion. First, we note that a State has the power to expel a foreigner from its territory, because of its sovereign power on grounds of public order, national security, or the illegal stay of the foreigner. But this expulsion is regulated by international law through a number of principles. However, the power of State in this matter is not unlimited. Thus, any decision to expel must be in accordance with the law, the State is not allowed to resort to collective expulsion, moreover, a State should only expel the foreigner to another State which is safe of origin which is safe, to prevent the foreigner from being subjected to torture.
Die Metamorphosen des Apuleius. Selbstbestimmung als Illusion?
Authors: Sassi Islème
Published: July 2021

In welcher Form das modern anmutende Konzept der individuellen Selbstbestimmung bereits in der Antike Betrachtung fand, wird an Apuleius’ Roman Metamorphosen untersucht. Dabei wird die leitmotivische Neugier des Protagonisten Lucius als Ausdruck des Strebens nach Selbstbestimmung verstanden, die der Antrieb ist für sein Handeln und auch für seine Verwandlung in einen Esel. Als Tier verliert er einen grossen Teil seiner Selbstbestimmung, sieht aber gleichzeitig ein, dass auch die Menschen zu grossen Teilen von Fortuna fremdbestimmt sind. Selbst als Esel bewahrt er sich seine Neugier und damit eine Nische der Selbstbestimmung. Als Lucius dank Isis wieder zum Menschen wird, weiht er sein Leben der Göttin und ordnet sich damit freiwillig erneuter Fremdbestimmung unter – erlangt dafür jedoch transzendentes Wissen.
Synthesis and spectroscopic interpretations of Co(II), Ni(II) and Cu(II) decxycholate complexes with molecular docking of COVId-19 protease
Authors: Refat Moamen S. , Bakare Safyah B. , Altalhi Tariq A. , Alam Kehkashan , Al-Hazmi Ghaferah H.
Published: July 2021

Co(II), Ni(II) and Cu(II) decxycholate complexes are interesting due to their biologically active and deliberate interest in the research due to their coordination properties. The microanalytical ‘elemental analysis’, molar conductivity, (infrared and Raman) spectroscopy, thermal analyses (TGA/DSC), UV-vis spectra, and ESR for copper(II) decxycholate complex investigations were performed in the structural assignments of Co(II), Ni(II) and Cu(II) decxycholate complexes. Reaction of the sodium deoxycholate ligand (C24H39O4Na) with three transition metal ions form the complexes of formulae, [M(C24H39O4)2(H2O)2]. xH2O where M = Co(II), Ni(II) and Cu(II) where x = 2 for Cu(II) and x = 4 in case of M = Co(II) or Ni(II) metal ions. The FTIR spectra of the complexes show that decxycholate molecule is present as bidentate ligand. Molecular docking utilizing to additionally examine the interaction of COVID-19 (6LU7) with different complexes of deoxycholic acid with Co(II), Ni(II) and Cu(II). Furthermore, in the case of Co(II) deoxycholate complex, the probe is surrounded by amino residues Met235, Pro241, Glu240, Pro108, Gln110, Phe294, and Ile152. The probe molecule of Ni(II) deoxycholate complex is sited close to amino acids Tyr126, Tyr239, Leu287, Leu272, and Lys137. For, Cu(II) deoxycholate complex, the residues of amino acids comprise of Pro132, Pro108, Gln110, Gly109, Ile200, Asn203, Val202, His246, Pro293 and Tyr154. The binding energy was determined from the docking reads for Co(II)–6LU7, Ni(II)–6LU7 and Cu(II)–6LU7 deoxycholate compounds were found to be −446.99, −500.52, −398.13 kcal mol−1 individually.
Control of Unmanned Surface Vehicle Along the Desired Trajectory Using Improved Line of Sight and Estimated Sideslip Angle
Authors: Li Ligang , Pei Zhiyuan , Jin Jiucai , Dai Yongshou
Published: July 2021

In order to improve the accuracy and robustness of path following control for an Unmanned Surface Vehicle (USV) suffering from unknown and complex disturbances, a variable speed curve path following a control method based on an extended state observer was proposed. Firstly, the effect of the environmental disturbances on the USV is equivalent to an unknown and time-varying sideslip angle, and the sideslip angle is estimated by using the extended state observer (ESO) and compensated in the Line of Sight (LOS) guidance law. Secondly, based on the traditional LOS guidance law, the design of the surge velocity guidance law is added to enable the USV to self-adjust the surge velocity according to the curvature of the curve path, thus further improving the tracking accuracy. Finally, the heading and speed controller of the USV is designed by using a sliding mode control to track the desired heading and speed accurately, and then the path following control of the USV’s curve path is realised. Simulation results verify the effectiveness of the proposed method.
Joints Of Steel Sandwich Structures
Authors: Kozak Janusz
Published: July 2021

Steel sandwich structures are perceived as alternatives to single-skin welded structures in the shipbuilding industry due its advantages like significant reduction of mass in relation to typical single skin structure. However, beside problems with their strength properties itself, applications in real structures requires of solving the problem of joining, both for connection sandwich to sandwich as well as sandwiches to single-shell structures. Proper design of joints is connected with some factors like lack of attempt to interior of panel, introduction of additional parts and welds with completely different stiffness. In the paper the results of laboratory fatigue tests of selected joints as well as numerical calculation of stressed for different kind of joints of sandwich structures are presented. As result of calculations optimisation of geometry for selected joints is performed.
Circular Design and Consumer Involvement in Circular Economy
Authors: Knošková Ľubica
Published: July 2021

The circular economy is an approach to help reduce global sustainability pressures. In circular economy it is important to involve design from the beginning of the product lifecycle, including product ideation and material selection. Involvement of consumers and users into circular economy is very important and enables change in purchase patterns and product utilization. The paper methodology consists of a profound literature review and analysis in area of circular economy, circular design and consumer or user influence on circularity. The goal of the paper is to provide insights into the consumer involvement into a circular economy and changes in users’ behavior. The research results in discussion of design strategies to slow down “resource loops”, to close “resource loops”, and to “narrow material flow” to enhance circular economy and business models, as well as consumer involvement in circular economy. We outline desired consumer and user behavior leading to circular economy.
Microeconomic Aspects of Franchising
Authors: Orgonáš Jozef
Published: July 2021

The present arrangement of franchising is a very popular business form. It is a very dynamic form of making business. The form is very modern and conservative at once. It′s modern enough and at the same time approved, to represent the possible visionary way of the entrepreneurship in the 21st century. Franchising has become a means of growth across many different industries, including business and financial services, beauty, health, sport, various services, food, medical, recreation and many others. Our effort might understand how the franchising performance drivers applied in the microeconomic parts work and how important it is for franchisor and the franchisee, as well.
Alternative dispute resolution (ADR) for consumer disputes in the Slovak republic
Authors: Vačoková Lenka
Published: July 2021

This paper aims to analyse alternative dispute resolution (ADR) for consumer disputes in the Slovak Republic according to Act No. 391/2015 Coll. on consumer alternative dispute resolution as amended. Through this act Directive 2013/11/EU of the European Parliament and of the Council of 21 May 2013 on alternative dispute resolution for consumer disputes and amending Regulation (EC) No 2006/2004 and Directive 2009/22/EC (Directive on consumer ADR) has been transposed into Slovak law. Author of the paper used scientific methods of analysis, comparison, deduction, induction and synthesis. She tried to evaluate the application of consumer ADR by Slovak ADR entities, development of ADR between 2016 and 2019, current situation, and to provide conclusions and suggest changes for future.
The Examination of Food Waste Behaviour in Hungarian Households
Authors: Borbély Csaba , Gőbel Rebeka
Published: July 2021

Our current existence on the Earth raises a number of contradictions such as our relation to food. According to the FAO, a third of the food produced does not reach consumers; according to calculations by the World Resources Institute, even if we reduced losses by a quarter, 795 million people would have enough food to feed. This controversial situation gives topicality to the topic, which will only grow as the Earth’s population grows by about 80 million people a year and our resources for nourishment are finite. In our research we focused on households within the topic area of food waste generated in the supply chain. This focus of research is considered a difficult one because results could be found only with data logging and this method has several limitations which could distort the results. In our research, 20 households in Kaposvár were asked to log the amount of their food waste for 14 days. We set up five hypotheses before our research.
РЕАЛИЗАЦИЯ ГОСУДАРСТВЕННОЙ ЖИЛИЩНОЙ ПОЛИТИКИ
НА ДАЛЬНЕМ ВОСТОКЕ В ГОДЫ СОВЕТСКОЙ В
Authors: Власов С.А.
Published: July 2021

В статье представлен анализ реализации государственной жилищной политики на Дальнем Востоке за весь период существования советской власти.
Автор полагает, что изначально органами центральной и местной власти
не ставилась задача по ликвидации жилищного кризиса в регионе, который
разразился после окончания Гражданской войны. Целенаправленная жилищная политика стала формироваться в годы индустриализации, ее целью
было обеспечить хотя бы примитивным жилищем рабочих существующих
и строящихся промышленных предприятий. Для партийно-хозяйственной
номенклатуры, отдельных передовиков производства, представителей научно-технической и творческой интеллигенции возводились благоустроенные
дома, в которых предоставлялись отдельные квартиры. В 1957 г. в жилищной политике произошли изменения: началось широкомасштабное строительство, был изменен принцип распределения жилья – отныне каждая
семья, независимо от социального или профессионального статуса ее членов, могла получить от государства отдельную благоустроенную квартиру.
Как показывает анализ, в годы массового строительства значительный рост
объемов введенного в эксплуатацию жилья был достигнут за счет дополнительного финансирования, внедрения в производство типовых проектов,
применения новых технологий. Автор заключает, что за 1960-е – 1980-е гг.
в реализации жилищной политики удалось добиться некоторых достижений – большинство дальневосточников улучшили свои жилищные условия,
однако полностью решить жилищную проблему не удалось.
El principio de objetividad de la administración
Authors: Míguez-Macho Luis
Published: July 2021

El presente trabajo estudia las relaciones entre el principio de objetividad de la Administración y el procedimiento administrativo en el Ordenamiento jurídico español. Para ello se parte de una reflexión general sobre el significado que tiene la procedimentalización de la actuación administrativa como exigencia derivada del principio de objetividad, puesto que tradicionalmente se ha venido considerando que la propia existencia del procedimiento administrativo es, en buena medida, una consecuencia de dicho principio. Sentada esta base, se analiza la imparcialidad de los responsables de la tramitación y resolución del procedimiento como presupuesto de la objetividad, las principales técnicas de integración de intereses públicos y privados en el y los informes técnicos y jurídicos y otras técnicas de adquisición de los fundamentos objetivos de la resolución del procedimiento.
Journalology: The Study of the Dissemination of Academic Knowledge
Authors: Norris Trevor
Published: July 2021

Journalology: The Study of the Dissemination of Academic Knowledge
Brand Image, Kualitas Pelayanan Dan Kepuasan Konsumen Di Dalam Pengaruhnya Terhadap Minat Ulang Penggunaan Aplikasi Dana
Authors: Indrawati Lilik , Pattinama Marcell Mathias
Published: July 2021

The purpose of this study was to determine the effect of brand image, service quality and customer satisfaction on re-interest in using the Dana application. The population in this study were students of Darma Cendika Catholic University, Widya Mandala Catholic University Surabaya and St. Vincetius Paolo University (RKZ). The sample is 75 respondents, with the consideration that this number can represent the research sample. This research method is quantitative with multiple regression analysis, the data entered is processed with SPSS version 20. The results of this study indicate that brand image and service quality do not affect re-interest using  Dana application for students in Surabaya, and consumer satisfaction has a significant effect on re-interest in using the Dana application to students in Surabaya.
Acute cholecystitis with intraluminal gallbladder bleeding: Case report and literature review
Authors:   Department of Abdominal Surgery, University Medical Centre Ljubljana, Zaloška cesta 7, 1000 Ljubljana, Slovenia, University of Ljubljana, Faculty of Medicine, Vrazov trg 2, 1000 Ljubljana, Slovenia.
Published: July 2021

Background: Hemorrhagic cholecystitis is an infrequent complication of acute cholecystitis associated with high mortality rate. Recognition of this acute abdominal condition is often challenging. Authors present a case of acute intraluminal gallbladder bleeding with a consequential gallbladder wall perforation and hematoperitoneum requiring emergency surgery in a patient on anticoagulant therapy. Case Presentation: An 80-year old woman with atrial fibrillation on warfarin was presented to abdominal surgeon due to acute abdominal pain with hemodynamic instability and active intraluminal gallbladder bleeding on CT-scan. An emergency laparotomy with cholecystectomy was performed. Despite intensive treatment patient died on the third postoperative day. Conclusions: Hemorrhagic cholecystitis is a potentially life-threatening condition. Patients on anticoagulant therapy with clinical signs of acute cholecystitis are more prone to develop bleeding into the gallbladder. Contrast-enhanced CT of the abdomen is the diagnostic modality of choice and cholecystectomy definitive therapy in patients with hemorrhagic cholecystitis.