bluuebunny/crossref_metadata_2025_split huggingface dataset:
Insight into Degrading Effects of Two Fungi on Polyurethane Coating Failure in a Simulated Atmospheric Environment
Authors: Hao Xiangping , Yang Kexin , Zhang Dawei , Lu Lin 
Published: January 2023

Two different fungi, Talaromyces funiculosus (T. funiculosus) and Phanerochaete chrysosporium (P. chrysosporium), were collected from the Xishuangbanna atmospheric corrosion site and incubated on a polyurethane (PU) coating at 30 °C for two weeks under 95% relative humidity (RH). The biodegrading effects of these fungi on the coating failure were investigated from aspects of metabolism and electrochemistry. The results showed that T. funiculosus contributed more to the degradation of the PU coating failure than P. chrysosporium, and two factors played dominant roles. First, the weight of the T. funiculosus mycelium was nearly 3 times more than that of P. chrysosporium, indicating there was more substrate mycelium of T. funiculosus deep into the coatings to get more nutrition in atmospheric during colonization. Second, T. funiculosus secreted carboxylic acids, such as citric, propanoic, succinic, and tartaric acids, and accelerated the hydrolysis of the ester and urethane bonds in the PU coatings. As a result, the mycelium of T. funiculosus readily penetrated the interface of the coating and substrate resulting in a rapid proliferation. Thus, the |Z|0.01Hz value of the coating decreased to 5.1 × 104 Ω·cm2 after 14 days of colonization by T. funiculosus while the value remained at 7.2 × 107 Ω·cm2 after colonization by P. chrysosporium. These insights suggest that the biodegradation process in simulated atmospheric environments would provide theoretical guidance and directions for the design of antifungal PU coatings.
Rancang Bangun dan Analisa Kekuatan Rangka Mesin Pencuci Singkong Metode Rotary dengan Solidworks Simulation
Authors: Zaira Jupri Yanda , Pradana M. Tito Isnaini 
Published: January 2023

Pembersihan adalah proses menghilangkan kotoran yang menempel pada singkong. Tujuannya untuk menghilangkan kotoran yang masih menempel pada singkong supaya singkong terlihat menarik. Selama pembersihan, usahakan singkong bebas dari segala kotoran yang menempel pada singkong seperti tanah, sisa tanaman atau akar tanaman dengan cara dipangkas dan kulitnya dikupas, setelah itu dicuci dengan air bersih secara hati-hati. Rancang bangun mesin pencuci singkong dengan metode rotary ini mempunyai dimensi (1500x660x500)mm dan menggunakan 3 variasi jarak kisar yang berbentuk ulir menggunakan bahan karet yaitu 136 mm , 190 mm , dan 290 mm . Hasil solidworks simulation untuk kekuatan rangka mesin dengan beban 150 kg terjadi tegangan tekan terbesar di area dudukan poros tabung pencuci sebesar 2,827 x 108 N/m2 dengan regangan sebesar 3,738 x 10-4. Hasil pengujian performance mesin pencuci singkong semi otomatis dengan kecepatan 23 rpm setiap proses pencucian 30 kg singkong membutuhkan waktu tercepat 58,61 detik terjadi pada variasi jarak kisar 290 mm (menggunakan 4 karet lilitan pada tabung pencuci) dengan kapasitas mesin sebesar 1.842,69 kg/jam. Untuk pemakaian daya listrik setiap proses pencucian 30 kg singkong selama 58,61 detik membutuhkan daya listrik 0,018 KWH
Kata kunci: Singkong, Pencuci Singkong, Motor AC 1 phasa
Optimisasi Setting Directional Overcurrent Relay Dengan Menggunakan Hybrid Algoritma (DE â€“ PSO)
Authors: Tauladan Imam Suri , Syamsir Hendri Novia 
Published: January 2023

Untuk mencegah adanya gangguan dan kerusakan peralatan pada sistem tenaga listrik diperlukan peranan sistem proteksi. Sistem proteksi yang tidak handal memiliki dampak kerugian ekonomi, hal inilah menjadi dasar para engineer untuk melakukan penelitian optimasi koordinasi proteksi pada sistem tenaga listrik. Penelitian ini bertujuan untuk memastikan sistem proteksi dapat berjalan dengan baik jika terjadinya gangguan hubung singkat pada sistem. Selain itu, penelitian ini untuk mempermudah engineer dalam perhitungan studi koordinasi Directional Overcurrent Relay (DOCR). Berbeda dengan penelitian sebelumnya, dalam penelitian ini mengimplementasikan metode hybrid algoritma pada sistem kelistrikan real dengan mempertimbangkan skema operasi generator. Dengan adanya kondisi operasi generator yang selalu berubah-ubah, kondisi tersebut mempengaruhi waktu kerja DOCR. Untuk mengatasi permasalahan tersebut, perlu melakukan setting DOCR yang optimal dengan menggunakan metode metaheuristik. Hal tersebut menjadi dasar peneliti untuk melakukan penelitian optimasi setting koordinasi proteksi. Setiap metode metaheuristik seperti Differential Evolution Algorithm dan Particle Swarm Optimization memiliki kekurangan dan kelebihan masing-masing dalam proses pencarian optimisasi. Oleh karena itu, penelitian ini mengimplementasikan strategi hybrid algoritma Differential Evolution Algorithm â€“ Particle Swarm Optimization (DE-PSO) untuk mendapatkan nilai Time Dial Setting (TDS) DOCR. Dari hasil penelitian dapat disimpulkan dengan menggunakan hybrid algoritma lebih efisien 83% dari metode non-hybrid.
Kata kunci: Directional Overcurrent Relay, Differential Evolution Algorithm, Particle Swarm Optimization
Singer's algebraic transfer for all ranks $s\geq 5$ and the negation of the dimension results for the graded spaces $\mathbb F_2\otimes_{\mathscr A} \mathbb F_2[x_1, \ldots, x_s]$ in degrees $s+5$
Authors: Võ Phúc Đặng 
Published: January 2023

<p>Let $P_s:= \mathbb F_2[x_1,x_2,\ldots ,x_s]$ be the graded polynomial algebra over the prime field of two elements, $\mathbb F_2$, in $s$ variables $x_1, x_2, \ldots , x_s$, each of degree one. This algebra is considered as a graded module over the mod-2 Steenrod algebra, $\mathscr {A}$. The classical "hit problem", initiated by Frank Peterson [Abstracts Amer. Math. Soc. 833 (1987), 55-89], concerned with seeking a minimal set of $\mathscr A$-module $P_s.$ Equivalently, when $\mathbb F_2$ is an $\mathscr A$-module concentrated in degree 0, one can write down explicitly a monomial basis for the $\mathbb Z$-graded vector space over $\mathbb F_2$:</p>
<p>$$ QP_s:= \mathbb F_2 \otimes_{\mathscr A} P_s = P_s/\mathscr A^+\cdot P_s,$$</p>
<p>where $\mathscr A^{+}$ denotes the augmentation ideal of $\mathscr A.$ The problem is unresolved in general. In this paper, we study the hit problem for $P_s$ with $s\geq 5.$ More explicitly, we first compute explicitly the dimension of $QP_s$ for $s = 5$ in the generic degree $21\cdot 2^{t}-5$ with $t = 1.$ Note that the problem when $t = 0$ was solved by N. Sum [Vietnam J. Math. 49 (2021), 1079-1096]. Next, we study the dimension of $QP_s$ in degrees $s+5$ for $8\leq s\leq 9.$ This study corrects some results in Moetele and Mothebe's paper [East-West Journal of Mathematics 18 (2016), 151-170]. We also give an explicit formula for the dimension of $QP_s$ in degree $14$ for all $s > 0$ and in degree $15$ for all $s > 0,\, s\neq 10.$ As applications, we investigate William Singer's conjecture [Math. Z. 202 (1989), 493-523] on the algebraic transfer of rank $5$ in degrees $21\cdot 2^{t}-5$ for all $t\geq 0$ and of ranks $s > 0$ in internal degrees $d,\, 13\leq d\leq 15.$ This is a completely new result of proving the Singer conjecture for all ranks $s$ in certain internal degrees. In particular, our results have shown that any element in the $Sq^{0}$-families $\{\chi_t=(Sq^{0})^{t}(\chi_0)\in {\rm Ext}_{\mathscr A}^{5, 21\cdot 2^{t+1}}(\mathbb F_2, \mathbb F_2)|\, t\geq 0\}$ and $\{D_1(t)=(Sq^{0})^{t}(D_1(0))\in {\rm Ext}_{\mathscr A}^{5, 57\cdot 2^{t}}(\mathbb F_2, \mathbb F_2)|\, t\geq 0\}$ belongs to the image of the algebraic transfer of rank $5.$ For higher ranks, we explore the behavior of the algebraic transfer of rank 7 in the generic degrees $23\cdot 2^{t}-7$ for $t = 0$ and $\ell\cdot 2^{t}-7$ for $\ell\in \{9,\, 16\},\, t\leq 3.$ Our results then claim that the non-zero elements $Pc_0\in {\rm Ext}_{\mathscr A}^{7, 23\cdot 2^{0}}(\mathbb F_2, \mathbb F_2),$\ $k_0 = k\in {\rm Ext}_{\mathscr A}^{7, 9\cdot 2^{2}}(\mathbb F_2, \mathbb F_2)$ and $h_6D_2\in {\rm Ext}_{\mathscr A}^{7, 2^{7}}(\mathbb F_2, \mathbb F_2)$ are not in the image of the transfer, and that every indecomposable element in the $Sq^{0}$-family $\{Q_2(t) = (Sq^{0})^{t}(Q_2(0))\in {\rm Ext}^{7, 2^{t+6}}_{\mathscr A}(\mathbb F_2, \mathbb F_2):\, t\geq 0\}$ belongs to the image of the transfer.</p>
RIS-Based Steerable Beamforming Antenna with Near-Field Eigenmode Feeder
Authors: Tiwari Krishan Kumar , Caire Giuseppe 
Published: January 2023

<p>We present a novel, power and hardware efficient, antenna system leveraging the eigenmodes of the over-the-air propagation matrix from an active multi-antenna feeder (AMAF) to a large reflective intelligent surface (RIS), both configured as standard linear arrays and placed in the near field of each other. We demonstrate the flexibility of the proposed architecture by showing that it is capable of generating radiation patterns for multiple applications such as very narrow beams with low side lobes for space-division multiple access communications, wide-angle beams for short range automotive sensing and sectorial beaconing, and monopulse-like patterns for radar angular tracking. A key parameter in our design is the AMAF-RIS distance which must be optimized and it is generally much less than the Rayleigh distance. For a given AMAF aperture, the optimal AMAF-RIS distance increases as a function of the RIS size. The AMAF-RIS loss is compensated almost exactly by the larger aperture gain of the RIS leading to almost constant RIS gain with increasing RIS sizes. This allows to choose different beam angular selectivities with the same center beam gain. Active RF amplification is done at the AMAF only, thus resulting in a much higher power efficiency and much lower hardware complexity than conventional phased arrays with same beamforming performance.</p>
The Cyber Centre, Host and Cloud-Based Sensor Technology - An Analysis
Authors: Ahmed Ashar 
Published: January 2023

<p>The emerging cybersecurity industry in Canada is not seen as anywhere near the scale of its American cyber-industrial complex counterpart, with limited-scale projects occurring to improve security sensor technology for institutions. However, due to international trade increasingly occurring through cyberspace, it is expected that the cyber industry will grow in Canada through both international and domestic partnerships, with Canadian critical infrastructure partners requiring greater security controls in order to ensure the confidentiality, integrity and availability of their data and operations. </p>
Service-Learning for the interprofessional development of school-community partnership in the LifeComp framework
Authors: Lotti Patrizia , Orlandini Lorenza 
Published: January 2023

The paper presents a reflection on the LifeComp framework within the planning activities of Service-Learning projects carried out in mixed teams composed of teaching staff and educators from the non-profit sector. By considering the theme of interprofessionality as a central field of the development of the teaching profession within the educational scenarios generated by the pandemic, by national and international indications, the research focuses on the identification of the competences of the LifeComp framework present in the narratives produced by teachers and educators during the first phase of the project. Using service learning is functional to enable the teachers and educators involved to adopt an attitude of research and openness towards the other; at the same time, it is an approach that can provide a methodological framework for designing student-centred interventions and school-territory collaboration that simultaneously develop cognitive and educational skills.

Il Service-Learning per lo sviluppo interprofessionale della collaborazione scuola-territorio nel quadro del LifeComp.
Il paper presenta una riflessione sul framework LifeComp all’interno delle attività di progettazione di percorsi di Service Learning realizzate in equipe miste, composte da personale docente ed educatori del terzo settore. Considerando centrale il tema dell’interprofessionalità come ambito dello sviluppo della professione docente all’interno degli scenari educativi determinati dalla pandemia, dalle indicazioni nazionali e internazionali, la ricerca si focalizza sull’individuazione delle competenze del framework LifeComp presenti nelle narrazioni prodotte da docenti ed educatori nel corso della prima fase di avvio del percorso. L’apprendimento servizio è funzionale ad attivare nei docenti e negli educatori un atteggiamento di ricerca e apertura verso l’altro; allo stesso tempo è un approccio in grado di fornire una cornice metodologica per la progettazione di interventi centrati sullo studente e sulla collaborazione scuola-territorio che sviluppano contemporaneamente competenze di tipo cognitivo ed educativo.
Agroclimatic and agroecotoxicological justification of zonal chemical protection systems against harmful organisms for field crops under conditions of climate change in Ukraine
Authors: Borzykh O. , Bublyk L. , Chaika V. , Gavrylyuk L. , Kruk I. , Shevchuk O. , Neverovska T. , Bakhmut O. 
Published: January 2023

Goal. Agroclimatic and agroecotoxicological zoning of the territory of Ukraine in order to justify ecologically safe zonal systems of chemical protection against harmful organisms, their optimization and adaptation to changes in climatic conditions and phytosanitary state of agrocenoses in different soil-climatic zones of Ukraine.
Methods. Analytical-synthetic and experimental methods were used in the research. Literary sources, reports of the Institute of Plant Protection, data on the distribution and number of pests given in the annual reviews of the Department of Phytosanitary Safety of the State Service of Ukraine on Food Safety and Consumer Protection, databases of the State Statistic Service and the Hydrometeorological Center of Ukraine, as well as the results of field experiments were analyzed. Phytosanitary and ecotoxicological monitoring was carried out according to generally accepted methods. The degree of hazard of pesticide use was assessed using an integral 7-point scale, the risk — according to the agro-ecotoxicological index (AETI).
Results. Ecological and statistical analysis of long-term databases, dynamics of agrometeorological indicators allows us to come to the conclusion that during the last 10 years climate changes have accelerated. They manifested through the equalization of the temperature field across the country, the increase in the sum of effective temperatures, and a deterioration of heat and moisture supply. This led to a disruption in the functioning of agrocenoses, a decrease in tolerance to the pesticide load. Under conditions of extension of the specified trends, significant disruptions in the functioning of the agricultural sector should be expected, considering the speed of changes. With the help of the Arc GIS — Arc INFO software complex, the agroclimatic and agroecotoxicological zoning of the territory of Ukraine under conditions of climatic changes of 2010—2020 was carried out. A decrease in the self-cleaning ability of the territory has been established. This is especially noticeable in the Forest Steppe, where the zonal self-cleaning index decreased from 0.70—0.50 to 0.60—0.45. Maps of agro-climatic zones and regions of Ukraine with different self-cleaning capabilities have been created.
Conclusions. Regular addition and update of agro-climatic regulatory information under conditions of climate change is used for the correct selection and placement of agricultural areas, crops, assessment of conditions for their growth and development, planning of field work periods, forecasting of crop production in a specific year. This information is necessary for improving the culture of agriculture, increasing the production of plant products along with the wide application of modern technologies of crop cultivation, in particular chemical protection against harmful organisms.
Profitabilitas, Ukuran Perusahaan, Dan Struktur Modal Terhadap Nilai Perusahaan
Authors: Prasetyo Dimas Wahyu , Hermawan Aditya 
Published: January 2023

Tujuan dari penelitian ini adalah untuk mengetahui dan menganalisis pengaruh profitabilitas, ukuran perusahaan dan struktur modal terhadap nilai perusahaan di perusahaan property dan real estate yang terdaftar di BEI (Bursa Efek Indonesia) periode 2019-2021. Peneliti mengambil profitabilitas karena ingin mengetahui seberapa pengaruh di periode sekarang, ukuran perusahaan karena ingin mengetahui seberapa penting investor melihat aset entitas dan struktur modal apakah entitas dapat mengelola hutang dengan baik di periode 2019-2021. Populasi yang diperoleh dalam penelitian ini sebanyak 64 entitas. inresearch adalah perusahaan property dan real estate yang tercatat di BEI (Bursa Efek Indonesia) periode 2019-2021 dan sampel yang diperoleh adalah 16 perusahaan. Metode pengambilan sampel yang digunakan dalam penelitian adalah "purposive sampling". Jenis penelitian ini adalah penelitian kuantitatif. Jenis penelitian yang digunakan dalam penelitian ini adalah deskriptif kuantitatif. Sumber data penelitian adalah data sekunder yang diperoleh dari laporan keuangan tahunan. Analisis data yang digunakan adalah regresi linier berganda, koefisien uji determinantion, autokorelasi dan uji hipotesis. Hasil penelitian menunjukkan bahwa ukuran perusahaan (SIZE) berpengaruh terhadap nilai perusahaan (Price Book Value) pada perusahaan property dan real estate yang terdaftar di BEI (Bursa Efek Indonesia), profitabilitas (ROA) dan struktur modal (DER) tidak berpengaruh terhadap nilai perusahaan (Price Book Value) pada perusahaan property dan real estate yang tercatat di BEI (Bursa Efek Indonesia).
PENERAPAN STRATEGI DIGITAL MARKETING DALAM MENINGKATKAN OMSET DENGAN PENDEKATAN ANALISIS SWOT PERSPEKTIF MARKETING SYARIAH PADA TOKO FIHADAESSIE SURABAYA
Authors: Pratiwi Ananda Mega , Rohman Abdur 
Published: January 2023

Penelitian ini dilatarbelakangi oleh kemajuan teknologi internet yang saat ini berkembang pesat di masyarakat, Strategi digital marketing menjadi jalan alternatif bagi pelaku bisnis untuk menjangkau konsumen dengan sangat luas dan cepat dalam mempromosikan produknya melalui internet dan untuk meningkatkan volume penjualan. Tujuan penelitian ini untuk mengetahui penerapan strategi digital marketing pada toko Fihadaessie Surabaya alam mengembangkan bisnis dengan mempromosikan prodak yang dapat meningkatkan omset penjualannya yang diukur menggunakan matriks SWOT dan meninjau strategi digital marketing apakah sudah sesuai dengan prinsip marketing syariah. Penelitian ini dilakukan pada Toko Fihadaessie dengan menggunakan pendekatan kualitatif deskriptif dengan metode Matriks IFAS, Matriks EFAS, dan Matriks SWOTuntuk mengukur kekuatan, kelemahan, peluang dan ancaman. Sumber data diperoleh dari data primer dan data sekunder.Teknik pengumpulan data melalui observasi, wawancara dan dokumentasi. Hasil penelitian ini menunjukan bahwa penerapan strategi digital marketing pada toko Fihadaessie Surabaya sudah berhasil mengimplementasikan dengan baik melalui media sosial whatsapp, instragram, shopee dan tiktok sehingga terjadi peningkatan dalam omsetnya dan penerapan strategi digital marketing sudah sesuai dengan prinsip marketing syariah. Dari hasil matriks IFAS sudah kuat dalam mengidentifikasikan faktor internal, Matriks EFAS toko Fihadaessie Surabaya dengan baik merespon peluang yang ada dan menghindari ancaman yang datang dari pesaing.
Pengaruh Modal Intelektual terhadap Pengembalian Saham
Authors: Harianja Ervinasari , Apriyadi Riki , Wazdy Nadhira Alya , Novita Eriza , Yusfiswandi Yusfiswandi 
Published: January 2023

Penelitian ini dilakukan untuk mengetahui secara empirik, faktor-faktor yang mempengaruhi pengembaliann saham pada 431 perusahaan yang terdaftar pada Bursa Efek Indonesia (BEI) selama periode 2017 - 2021. Persaingan yang semakin tinggi menjadikan perusahaan tidak dapat hanya mengandalkan modal fisik, tetapi perusahaan diminta untuk dapat memaksimalkan dan mengoptimalkan Human Capital Efficiency, Structural Capital Efficiency, Capital Employed Efficiency, Intellectual Capital serta apakah pengaruh dari Female Director sebagai kontrol terhadap Stock Return. Hasil penelitian ini menunjukkan bahwa Human Capital Efficiency, Structural Capital Efficiency, Capital employed Efficiency, Intellectual capital serta Female Director sebagai kontrol tidak memiliki pengaruh signifikan terhadap Stock Return.
This research was conducted to find out empirically, the factors that affect stock returns in 431 companies listed on the Indonesia Stock Exchange (IDX) during the period 2017 - 2021. The increasingly high competition makes companies not only able to rely on physical capital, but companies are asked to can maximize and optimize Human Capital Efficiency, Structural Capital Efficiency, Capital Employed Efficiency, Intellectual Capital and whether the influence of Female Director as a control on Stock Return. The results of this study indicate that Human Capital Efficiency, Structural Capital Efficiency, Capital employed Efficiency, Intellectual capital and Female Director as controls have no significant effect on Stock Return.
PENGARUH KUALITAS PELAYANAN TERHADAP PENCAPAIAN TARGET PAJAK BUMI DAN BANGUNAN PADA BADAN PENDAPATAN DAERAH UPT TENGAH KOTA BANDUNG
Authors: Nursyani Aditya Sidiq , Bagja Hafied Noor 
Published: January 2023

Land and building taxes have an important role and great benefits for people's lives. Land tax is the imposition of taxes on the surface of the earth (land) based on Law number 12 of 1985. While the building tax is the imposition of taxes on technical constructions that are permanently planted or placed on construction land, the technique can be used as a residence, or a place of business, or workable place.
This study aims to determine the effect of service quality on the achievement of land and building tax targets. The sampling technique used is simple random sampling with 40 taxpayer respondents of Central UPT Bandung City. This research data uses primary data directly through questionnaires and analyzed using Statistical Product Service Solution. The data analysis method used in this research is to use a simple linear regression analysis method. In obtaining the necessary data, the preparation of this final project uses a research technique developed into closed questions with a Likert scale.
The results of this study indicate that the effect of service quality (X1) has a positive and significant effect on the achievement of the land and building tax target (Y).
Pengaruh gaya kepemimpinan dan pengawasan terhadap kinerja karyawan
Authors: Afdal Muh. , Kasran Muhammad 
Published: January 2023

Penelitian ini bertujuan untuk mengetahui pengaruh gaya kepemimpinan, pengawasan terhadap kinerja karyawan pada Sumber data yang digunakan adalah data yang diperoleh dari catatan kuesioner dan dokumentasi. Secara konsisten, setiap variasi (X) memiliki penalti untuk pekerjaan karyawan. Pemimpin yang terlibat langsung dalam pekerjaan memiliki pengalaman pribadi dengan cara karyawan dibayar. Teknik pengambilan sampel menggunakan metode pengambilan sampel acak bertingkat proporsional di mana sampel yang diambil sebanyak 150 responden. Teknik analisis menggabungkan analisis statistik dengan regresi, korelasi, determinasi, dan pengujian hipotesis. Hasil dari penelitian ini variabel kepemimpinan gay adalah nilai rata-rata skor sekitar 0,694 dengan kriteria baik. Skor rata-rata 0,105 dengan kriteria baik digunakan untuk variabel pengawasan. Pengawasan terhadap kinerja karyawan tidak berpengaruh positif dan tidak signifikan dengan nilai persamaan regresi Y = 24,277 + 0,648X1 dan nilai koefisien korelasi 0,382 atau memiliki tingkat hubungan yang kuat dengan n Uji yang diperoleh signifikansi 0,05)