bluuebunny/crossref_metadata_2025 huggingface dataset:
Public Diplomacy Activities of the Ukrainian World Congress Aimed at Improving the Image of Ukraine in the World (1991–2024)
Authors: Martyniuk Nazar
Published: December 2024

Abstract. The article examines the main directions of public diplomacy of the main coordination body of Ukrainian diaspora communities the Ukrainian World Congress (UWC) based on the 2021–25 Public Diplomacy Strategy of the Ministry of Foreign Affairs of Ukraine. For a better understanding of the topic, the main characteristics of diaspora diplomacy as a phenomenon are outlined. The author emphasises that public diplomacy can be carried out in cooperation with or without the diaspora’s state of origin. The article highlights the shortcomings of Ukraine’s cooperation with Ukrainians abroad, the main of which is the lack of a clear strategy for cooperation with Ukrainians worldwide in Ukrainian legislation. It is noted that the state is only beginning to recognise the potential of Ukrainians abroad as ‘ambassadors’ of Ukraine in the world in the context of the fullscale invasion.
The article elaborates on the UWC’s role as an advocate and promoter of Ukraine in the world. The author points out the large-scale assistance provided by the organisation to support the state of its origin. Based on a wide range of sources, including materials from UWC congresses, periodicals and information from official media resources, the author suggests tracing the dimensions of UWC public diplomacy, describing the activities of its structural units, as well as the experience of certain member organisations of the UWC network. It is pointed out that an important area of the UWC’s work is spreading the historical truth about the Holodomor of 1932–1933 and its recognition by foreign countries as genocide of the Ukrainian people.
The article highlights the main forms and methods of UWC public diplomacy, which include disseminating information about Ukraine in the world, countering propaganda, and advocating Ukrainian interests in foreign governments and international organisations. The author concludes that different types of public diplomacy complement each other and comprehensively fulfil the UWC’s priority tasks of promoting Ukraine in the world.
Keywords: diaspora, Ukrainians abroad, Ukrainian World Congress (UWC), public diplomacy, image, disinformation, culture, sports, Ukrainian communities.
Paths of Eurointegration Endeavors (International Activities of KPI in 2023: Achievements, Tasks, Prospects)
Authors: Sydorenko Serhii
Published: December 2024

Abstract. The article highlights the development of international activities of the National Technical University ‘Ihor Sikorskyi Kyiv Polytechnical Institute’ in 2023. It focuses on forming new content and forms of KPI activities in the international sphere, strengthening cooperation with European partners in martial law conditions, and implementing practical tasks outlined in the University Development Strategy until 2025.
It emphasises that integration into the European educational and scientific space entails an increase in academic and scientific projects, financial receipts, and civilisation changes in all aspects of the university’s life. Further positive shifts will be facilitated by Ukraine obtaining the status of a candidate for EU membership and international recognition of its role in defending the values of the democratic world.
Keywords: KPI, Europe, integration, university alliance, university association, project-grant programme, international activities.
Optimalisasi Transformasi Digital Dalam Mendorong Pertumbuhan Usaha Mikro, Kecil Dan Menengah Di Indonesia
Authors: Rusdiaman Rauf  , Syam Akbar , Randy Muh. Fuad
Published: December 2024

Penelitian ini membahas pentingnya transformasi digital dalam mendorong pertumbuhan Usaha Mikro, Kecil, dan Menengah (UMKM) di Indonesia. Transformasi digital mencakup penggunaan teknologi digital untuk meningkatkan efisiensi operasional, akses pasar, dan inovasi produk. Penelitian ini menggunakan pendekatan kualitatif dengan metode studi kasus yang diambil dari berbagai artikel untuk mengidentifikasi tantangan dan peluang yang dihadapi UMKM dalam proses digitalisasi. Hasil penelitian menunjukkan bahwa adopsi teknologi digital dapat meningkatkan daya saing UMKM, memperluas jangkauan pasar, dan meningkatkan kualitas layanan. Namun, tantangan seperti keterbatasan akses terhadap teknologi, minimnya literasi digital, dan hambatan finansial masih menjadi kendala utama. Oleh karena itu, diperlukan dukungan dari pemerintah, sektor swasta, dan lembaga pendidikan untuk mempercepat proses transformasi digital di kalangan UMKM. Penelitian ini memberikan rekomendasi strategis untuk mengoptimalkan penggunaan teknologi digital guna mencapai pertumbuhan yang berkelanjutan bagi UMKM di Indonesia.
Peran Lingkungan Kerja Dan Work Life Balance Terhadap Produktivitas Kerja Karyawan
Authors: Adia Pramesti  , Novi Arianti  , Asrianti  , Raba Nathaniel  , Nurhuda
Published: December 2024

Penelitian ini bertujuan untuk mengetahui pengaruh Lingkungan Kerja Dan Work Life Balance Terhadap Produktivitas Kerja Karyawan Pada PT. Tunas Dwipa Matra Cabang Palopo. Metode yang digunakan dalam penelitian ini adalah metode kuantitatif. Sampel dalam penelitian ini berjumlah 30 karyawan PT Tunas Dwipa Matra Cabang Palopo. Teknik penarikan sampel yaitu menggunakan teknik sampling jenuh. Metode pengumpulan data dalam penelitian ini ada tiga yaitu wawancara, observasi dan kuesioner. Analisis data dalam penelitian ini menggunakan regresi linear berganda dengan menggunakan aplikasi SPSS. Untuk menguji hipotesis dalam penelitian ini menggunakan uji f dan uji t. sedangkan untuk mengukur seberapa jauh kemampuan model regresi menggunakan uji koefisien determinasi (R2). Hasil penelitian menunjukkan bahwa secara simultan lingkungan kerja dan work life balance berpengaruh positif dan signifikan terhadap produktivitas kerja karyawan pada PT Tunas Dwipa Matra Cabang Palopo. Secara parsial lingkungan kerja berpengaruh positif dan signifikan terhadap produktivitas kerja karyawan pada PT Tunas Dwipa Matra Cabang Palopo, work life balance berpengaruh positif dan signifikan terhadap produktivitas kerja karyawan pada PT Tunas Dwipa Matra Cabang Palopo.
Analisis Penentuan Harga Pokok Produksi Berdasarkan Metode Full Costing
Authors: Sugito Putri Sry Hermayanti , Muhammad Azis  , Hariany Idris
Published: December 2024

Penelitian ini bertujuan untuk mengetahui dan menganalisis Penentuan  Harga Pokok Produksi Berdasarkan Metode Full Costing pada Usaha Mikro Roti Bakar Bandung 19 Di Kota Makassar. Sampel yang digunakan dalam penelitian ini adalah data dan informasi biaya produksi selama bulan Januari 2024 pada Usaha Mikro Roti Bakar Bandung 19. Teknik pengumpulan analisis data menggunakan analisis deskriptif kualitatif. Teknik ini dimulai dengan mengumpulkan data yang dibutuhkan berupa data dan informasi biaya bahan baku, biaya tenaga kerja langsung, dan biaya overhead pabrik serta bukti pendukung lainnya, melakukan wawancara dengan pemilik usaha, mengolah hasil wawancara dan data administrasi yang diperoleh berdasarkan analisis data yang digunakan serta menghitungnya dengan metode Full Costing, mendeskripsikan metode penetapan harga pokok produksi pada Usaha Mikro Roti Bakar Bandung 19, dan menarik kesimpulan. Berdasarkan  hasil penelitian bahwa : (1) Harga Pokok Produksi yang telah dilakukan peneliti menunjukkan bahwa harga pokok produksi pada produk Roti Bakar Usaha Mikro Roti Bakar Bandung 19 sebesar Rp13.000,00/pcs. Sedangkan harga jual yang ditetapkan oleh perusahaan sebesar Rp22.000,00 (2) Melihat perbandingan antara harga pokok produksi dengan harga jual produk membuat pemilik usaha memperoleh laba sebesar Rp9.000,00
Faktor-Faktor Penentu Kinerja Pegawai
Authors: Nyamin Sucipto  , Abd Azis  , Rusdiaman Rauf  , Muhammad Fauzan
Published: December 2024

Tujuan penelitian ini adalah untuk mengetahui pengaruh kompensasi dan kompetensi terhadap kinerja pegawai. Penelitian ini dilakukan pada Balai Besar Meteorologi, Klimatologi dan Geofisika Wilayah IV Makassar. Jenis data yang digunakan dalam penelitian ini adalah data kualitatif dan kuantitatif. Sumber data yang digunakan dalam penelitian ini yaitu data primer dan sekunder. Populasi penelitian ini adalah karyawan pada Balai Besar Meteorologi, Klimatologi dan Geofisika Wilayah IV Makassar berjuml;gh 83 orang karyawan, sedangkan pengambilan sampel dalam penelitian ini yakni 1 jenis aset tetap dari akuntansi aset tetap yang terjadi pada per 2023. Pengumpulan data dilakukan dengan teknik data observasi dan dokumentasi. Data yang diperoleh kemudian dianalisis secara deskriptif kualitatif. Metode analisis yang digunakan adalah deskriptif kuantitatif, regresi linear berganda, koefisien korelasi, koefisien determinasi, uji t, serta uji f. Hasil penelitian menunjukkan bahwa kompensasi dan kompetensi baik secara parsial maupun simultan berpengaruh positif dan signifikan terhadap kinerja pegawai
TERSİNE İNSAN’I TAHAYYÜL ETMEK: SAHİPLENİLEN’DEN SAHİP’E DİSTOPİK BİR BAKIŞ
Authors: Sönmez Kevser
Published: December 2024

İdealize edilmiş bir evren tasarımı olarak tanımlanan ütopya türünün karşıtı olarak görülen distopyalar; kötücül kurgularıyla dikkati çekerler. Ütopyanın tersine çevrilmesiyle ortaya çıkan distopyalar, yaşamın diyalektik açmazlarını dile getirmek ve okuru sarsarak, bilişsel düzeyde bir farkındalık yaratmak amacıyla kaleme alınır. Özellikle II. Dünya Savaşı’ndan sonra edebî kurgular içerisinde ana akım hâline gelen ve ön plana çıkan distopya türü, 21. yüzyılda ütopyanın da işlevini yüklenir. Bilim kurgudan, iklim kurgudan, fantastikten ve postfeminizmden de beslenen distopyalar; istenmeyeni, kaçınılanı, bozuk olanı anlatarak tekinsizlik atmosferi doğururlar. Yazarın kendi döneminden şikâyeti, toplumsal değer taşıyan itirazları; küresel problemlere, iktidarların toplumlar üzerinde baskı ve manipülasyonlarına, dünyadaki ekonomik ve sınıfsal çatışmalara dair memnuniyetsizlikleri ve fütürist kaygıları sonucu kaleme alınan distopyalar, çift değerli karşıtı olan ütopyaya atıf yapar ve insanlar için bir uyarı niteliği taşır.
Bu makalede bir distopya örneği olarak Evcil İnsan Barınağı romanından bahsedilmiş ve distopya türünün kavramsal çerçevesi, ekolojik görüşlerle ilişkilendirilerek tartışılmıştır. Eserde hâkim ve baskın tür olan insanın, azınlık kategorisine düştüğü ve diğer canlılar tarafından ötelendiği bir dünyanın kurgusu söz konusudur. Bu bağlamda roman hem varoluşsal çatışmaları yansıtması hem de insanın doğa unsurları üzerindeki tahribatını distopik bir atmosferde görünür kılması noktasında önemli bir örnektir.
Syirkah Model For Islamic Gold Monetization
Authors: Hardiansyah Hardiansyah
Published: December 2024

This study proposes a syirkah model for gold monetization as a product innovation opportunity alternative in Islamic Financial Institutions (IFI) towards bullion bank activity implementation because of Act of Law No. 4 of 2023 about P2SK. A descriptive qualitative approach was used in this study of fiqh literature from Shariah Standard No. 57 on gold trading and its trading control released by the World Gold Council and AAOIFI, as well as Fatwa DSN MUI for Musharakah contract. This study was also validated by semi-structured interviews. To clearly define the originality, we use simulation to present and compare the concept with an existing gold-based pawn contract (Ar-Rahnu). Risk-adjusted calculation to protect the initial value. The result shows that this syirkah model can be an alternative to productive gold investment.
Impact of Indonesia Presidential Election Quick Count on Political Connected Stock Volatility: An Event Study
Authors: Hardiansyah Hardiansyah
Published: December 2024

This study assesses the impact of the 2024 Indonesia Presidential Election quick count results on the stock volatility of politically connected firms listed on the Indonesia Stock Exchange. An event study methodology is employed, analyzing four politically affiliated companies—PMMP, TOBA, BRMS, and WIRG—across a six-day event window (T-3 to T+3). A market-adjusted return model calculated abnormal returns (AR) and cumulative abnormal returns (CAAR). The findings reveal a significant market reaction before the event, particularly on T-2, where the average abnormal return (AAR) peaked at 5.82%, mainly driven by PMMP’s strong return of 16.66%. However, the AAR fell sharply to -3.91% on T+3, indicating a market correction. The cumulative abnormal return (CAAR) reached a high of 6.63% on T-2 before declining to 1.48% on T+3. A T-test yielded a p-value of 0.092 at a 10% significance level, showing a statistically weak significance in pre-and post-event returns. While the quick count results impacted stock performance, the market reaction was moderate. This study provides valuable insights for investors, helping them understand the influence of political uncertainty on politically connected firms in emerging markets and make informed investment decisions.
Analisis Asas Kepastian Hukum Kebijakan Pelayanan Administrasi Akta Kematian di Dinas Kependudukan dan Pencatatan Sipil Kota Bandung Perspektif Siyasah Dusturiyah
Authors: Nurfaqih Faizal , Lutfi Fahrul Rizal  , Taufiq Alamsyah
Published: December 2024

Penelitian ini menganalisis penerapan prinsip kepastian hukum dalam kebijakan layanan administrasi akta kematian di Dinas Kependudukan dan Pencatatan Sipil Kota Bandung dari perspektif siyasah dusturiyah. Fokus penelitian ini adalah mengevaluasi sejauh mana kebijakan tersebut mencerminkan prinsip keadilan dan kesejahteraan umum, yang merupakan inti dari siyasah dusturiyah dalam mengelola kepentingan masyarakat secara menyeluruh. Metode penelitian yang diterapkan adalah kualitatif dengan pendekatan deskriptif dan fokus yuridis empiris. Hasil penelitian menunjukkan bahwa meskipun telah ada upaya untuk meningkatkan aksesibilitas dan transparansi layanan, masih terdapat tantangan seperti keterbatasan sumber daya manusia dan infrastruktur yang mempengaruhi kualitas layanan kepada masyarakat. Penelitian ini merekomendasikan peningkatan sosialisasi kepada masyarakat, penguatan layanan digital, penambahan sumber daya manusia, peningkatan infrastruktur, serta evaluasi rutin sebagai langkah untuk menciptakan kepastian hukum yang lebih baik dan meningkatkan kepercayaan publik terhadap pemerintah.
Akibat Hukum Kepailitan Terhadap Kreditur dan Debitur dalam Perspektif Hukum Bisnis
Authors: Dede Dewi Sartika  , Erma Zahro Noor
Published: December 2024

Kepailitan adalah sebuah kondisi di mana suatu perusahaan tidak mampu lagi memenuhi kewajiban keuangannya kepada para kreditur, sehingga perusahaan tersebut dinyatakan tidak mampu melunasi utangnya. Sedangkan PKPU (Penundaan Kewajiban Pembayaran Utang) adalah suatu mekanisme hukum yang memberikan kesempatan kepada debitur yang mengalami kesulitan keuangan untuk melakukan restrukturisasi utang kepada kreditur-krediturnya. Secara umum, kesimpulan mengenai kepailitan dan PKPU adalah bahwa kedua mekanisme ini merupakan langkah-langkah hukum yang ada untuk membantu perusahaan yang mengalami masalah keuangan. Kepailitan biasanya merupakan langkah terakhir setelah upaya restrukturisasi gagal dilakukan, sementara PKPU memberikan kesempatan kepada perusahaan untuk merencanakan ulang pembayaran utangnya sehingga dapat bertahan dan melakukan perbaikan.
Akibat Hukum Pendaftaran Akta Pembebanan Hak Tanggungan apabila Surat Kuasa Membebankan Hak Tanggungan Telah Melewati Batas Waktu
Authors: Hananda Dwi Sasongko Putra  , Rakha Bagus Taruna  , Monza Riviero Harissa
Published: December 2024

Penelitian ini berjudul akibat hukum pendaftaran akta pembebanan hak tanggungan apabila surat kuasa membebankan hak tanggungan telah melewati batas waktu. Objek penelitian ini adalah Akta Pemberian Hak Tanggungan (APHT) dengan Surat Kuasa Membebankan Hak Tanggungan (SKMHT) berbentuk akta otentik yang telah melewati batas waktu. Tujuan penelitian ini untuk menggali akibat hukum keterlambatan pendaftaran APHT dari waktu pendaftaran dan bagaimana keabsahan terhadap APHT yang pendaftarannya melewati batas waktu sekaligus menggali kepastian hukumnya. Metode yang digunakan ialah yuridis normatif, dengan pendekatan peraturan perundang-undangan dan konseptual hukum. Diperoleh hasil bahwa APHT didaftarkan dengan melewati batas waktu SKMHT, berdasarkan Pasal 15 Ayat (4) jo. Ayat (6) UUHT, maka APHT tersebut tidak sah. Hal tersebut karena pendaftaran didasarkan atas SKMHT yang batal demi hukum. APHT akan ditolak pendaftarannya apabila terhadap obyek hak tanggungan terdapat perintah sita jaminan oleh pengadilan/sengeketa. Kreditur dengan ini tidak memperoleh kepastian hukum, karena sertipikat hak tanggungan tidak bisa diterbitkan.
Analisis Terhadap Faktor-Faktor yang Menjadi Penyebab Terjadinya Kekerasan dalam Rumah Tangga
Authors: Surya Richard Gordon , Rasji Rasji
Published: December 2024

Penelitian ini berjudul "Analisis Terhadap Faktor-Faktor yang Menjadi Penyebab Terjadinya Kekerasan Dalam Rumah Tangga." Kekerasan dalam rumah tangga merupakan isu serius yang terjadi di berbagai lapisan masyarakat Indonesia. Penelitian ini bertujuan untuk mengidentifikasi faktor-faktor yang mempengaruhi terjadinya kekerasan dalam rumah tangga, yang mencakup faktor sosial, ekonomi, budaya, dan psikologis. Metode penelitian yang digunakan adalah pendekatan yuridis-sosiologis, yang mengombinasikan analisis terhadap aturan hukum dengan kajian sosial. Data diperoleh melalui studi literatur, wawancara, serta analisis dokumen hukum terkait. Hasil penelitian menunjukkan bahwa faktor ekonomi, seperti ketidakstabilan finansial, menjadi salah satu pemicu utama terjadinya kekerasan dalam rumah tangga. Selain itu, nilai-nilai budaya yang mendukung dominasi laki-laki dalam keluarga turut meningkatkan risiko kekerasan. Dari hasil penelitian ini, dapat disimpulkan bahwa pencegahan kekerasan dalam rumah tangga membutuhkan pendekatan multi-aspek yang melibatkan edukasi masyarakat, penguatan perlindungan hukum, dan pemberdayaan ekonomi. Penelitian ini diharapkan dapat menjadi bahan referensi bagi perumusan kebijakan dan program pencegahan kekerasan dalam rumah tangga di Indonesia.
Analisis Ilustrasi Manajemen Pelatihan dan Keterampilan Pekerja Tambang Di PT. Semen Baturaja (Persero) Tbk. (Sebuah Pendekatan Deskriptif Terhadap Implementasi dan Peran Manajemen Pelatihan dan Keterampilan Pada SDM Tambang)
Authors: Fahmi Rizal , Ibrahim Eddy , Yusuf Maulana
Published: December 2024

Mining workers are crucial human resources in operating mining production processes, in addition to machinery and digital equipment. These workers possess specialized, specific, and complex skills, facing significant risks both to human lives (mortality) and corporate assets. Therefore, nurturing, developing, and enhancing their well-being, particularly in knowledge and skills (both soft skills and hard skills), are the main focus of this study. This research aims to illustrate the management of training and skills for mining workers at PT. Semen Baturaja (Persero) Tbk. and analyze it descriptively in terms of realization, achievements, and objectives. The subjects of this research are the Operation and Waste Management divisions at SMBR. This study employs a qualitative method with data collection techniques involving triangulation, yielding findings that show: 1) Training and skills are worker competency standards, 2) Training and skills are necessary to fulfill competency and certification requirements, 3) Training is tailored to job positions, and 4) Competency evaluation and job rotation practices are implemented. The conclusion is that SMBR has adequately implemented training and skill management, covering both soft and hard skills. Hard skills are reflected in training aligned with Ministerial Regulation of Energy and Mineral Resources (Permen ESDM) No. 1827, while soft skills are included in in-house training implementation.
Analytical approach for free vibration analysis of porous graphene platelet-reinforced composite beam
Authors: Mahi Amale , Hassaine Abdellah , Hamlati Zineb
Published: December 2024

This study presents an innovative analytical method for analyzing the free vibrations of porous composite beams reinforced with graphene platelets (GPLs). Using a unified higher-order shear deformation theory, we model the beam with continuously graded material properties. The effective Young’s modulus, Poisson’s ratio, and density are calculated via the Halpin-Tsai micromechanics model. Exact frequency equations are derived through Hamilton’s principle and the governing differential equations for various boundary conditions. This analytical approach allows for a comprehensive parametric study of the effects of beam geometry, GPL distribution patterns, weight fraction, porosity, and boundary conditions on natural frequencies. The detailed development of the equations of motion facilitates applications in similar modeling problems. Our findings provide a valuable reference for validating numerical methods and optimizing the design of advanced composite beams reinforced with nanoparticles for engineering applications.
Applied equilibrium optimizer algorithm for optimal planning multiple photovoltaic distributed generators in hybrid AC-DC distribution networks
Authors: Zellagui Mohamed , Settoul Samir , Lasmari Adel
Published: December 2024

Due to improvements in PV technology, electrical distribution networks are increasingly integrating PV-based distributed generation (PVDG) systems to reduce reliance on a single power source and the greenhouse gas emissions produced by conventional power plants. However, reverse power flow created by high power output from intermittent PVDG can increase system power losses and distort the voltage profile. Proper positioning and size are required to inject a PVDG during peak hours. This paper's main contribution is the application of a brand-new, dependable, and efficient algorithm called the equilibrium optimizer algorithm (EOA) to solve the problem of linking different numbers of PVDG units optimally in order to solve the optimal allocation of multiple PVDG units in hybrid medium-voltage AC-DC distribution networks. Comparing the EOA technique to the light spectrum optimizer (LSO), the energy valley optimizer (EVO), and the Archimedes optimization algorithm (AOA), the convergence characteristics and results show that the EOA approach was the quickest and best strategy to obtain the best solutions. The results from the simulation demonstrate that higher performance in terms of reducing power loss and improving various technical parameters can be obtained by achieving the ideal size and positioning of the PVDG sources via an optimum energy management strategy.
Wild fruits, forager children and secret treats in pre-Columbian South Florida
Authors: Ardren Traci
Published: December 2024

The archaeology of childhood has shown that research is possible on even the most ephemeral aspects of ancient human lives if we ask the correct questions of the material record. Children are now visible members of ancient societies and their impact on the physical environment in which they lived can be identified. This paper looks at food remains possibly recovered by children as a lens into one of the secret places and spaces of childhood. Fruit is often gathered by children in forager societies, in small peer groups that incorporate play, learning and socialisation into food provisioning. Using palaeobotanical and environmental data from the hunter-fisher-gatherer Tequesta society situated at the mouth of the Miami River along Biscayne Bay in south Florida, this paper suggests the human biological predilection for sugar facilitated a uniquely powerful relationship between plants, children and fruit trees. Fruit would have satisfied a powerful biological craving for sugar in this marine-resources focused culture. The relationship between children, fruit and wild food gathering shaped the foodscape of ancestral south Florida and the children who lived there. The lens of plant studies allows us to better appreciate the active role plants had in shaping human behaviour and landscape experiences.
Panorama da Arquitetura Corporativa na Administração Pública do Brasil
Authors: Vilela-Cury Luisa , Haussler Carneiro Ramos Karoll , Vasconcelos França Joysse , Montezano Lana
Published: December 2024

Arquitetura corporativa (AC) é uma ferramenta mundialmente adotada por governos de alto desempenho em governança pública que viabiliza uma gestão da informação integrada. Este artigo investiga o desenvolvimento do Framework de Arquitetura Corporativa para Interoperabilidade no Apoio à Governança (FACIN) do Governo Federal do Brasil, analisando os fatores que justificam sua adoção e os benefícios esperados desta implantação. Foi realizada análise de conteúdo e triangulação acerca de documentos que subsidiaram a elaboração do FACIN e dos artefatos produzidos. Verificou-se que, apesar da AC oportunizar uma gestão mais racional e eficiente e promover governança, a introdução do modelo no Brasil ainda precisa superar barreiras gerenciais e políticas.
Optimization of Odorous Compounds Analysis in Water Using Headspace-SPME and GC-MSD, and Detection Characteristics in the Nakdong River Basin
Authors: Son Heejong , Lee Pilkyeong , Kim Goeun , Jang Seongho , An Byungryul
Published: December 2024

Objectives : This study developed a simple and automated analytical method using headspace-SPME (solid phase microextraction) and GC (gas chromatography)-MSD (mass selective detector) to simultaneously analyze ten odorous compounds (dimethyl trisulfide (DMTS), 3-hexenylacetate (HA), 2-isopropyl-3-methoxypyrazine (IPMP), 2-methylbenzofuran (MBF), 2-isobutyl-3-methoxypyrazine (IBMP), β-cyclocitral (CC), trans-2-decenal (DCNL), 2-trans-4-trans-decadienal (DENL) 2,4,6-trichloroanisole (TCA) 및 β-ionone (ION)), evaluating their distribution characteristics throughout the Nakdong River basin.Methods : To optimize the extraction efficiency of the headspace-SPME method for ten odorous compounds, we evaluated various SPME fiber materials, extraction temperatures, extraction times, desorption temperatures, desorption times and salt (NaCl) dosages. Additionally, using the optimized headspace-SPME, we investigated the detection concentrations at ten main stream sites and six tributary sites in the Nakdong River basin.Results and Discussion : The most suitable SPME fiber material for the pretreatment of ten odorous compounds was CAR/PDMS/DVB. The optimal SPME extraction temperature and time were 75°C and 60 minutes, respectively, and the optimal desorption temperature and time at the GC injection port were 250°C and 3 minutes. Additionally, the optimal salt (NaCl) dosage for a 10 mL water sample was 2 g. Using the optimized headspace-SPME pretreatment method for GC-MSD analysis, the detection limits and quantification limits for the ten odorous compounds ranged from 2 to 10 ng/L and 5 to 25 ng/L, respectively, with HA exhibiting the highest detection and quantification limits. The evaluation of the distribution characteristics of odorous compounds throughout the Nakdong River basin revealed that only three compounds—DMTS, CC and ION—were detected. Among these, DMTS was found at the highest concentration of 115.5 ng/L in the tributary Jincheon-cheon, while CC was detected at the highest concentration of 30.6 ng/L in the main river at Goryeong. In the case of the Nakdong River basin, there was no contamination by odorous compounds in the upstream area. In the middle reach, influenced by effluent of wastewater treatment plants, the detection concentrations of three odorous compounds increased, but they showed a decreasing trend as they moved downstream.Conclusion : Since odorous compounds can lead to distrust in water quality even at extremely low concentrations in the ng/L range in tap water, regular monitoring of water sources is necessary during algal bloom season, including the dry season. Furthermore, continuous research is needed on various odorous compounds beyond the 10 odorous compounds in this study, including the optimization of analytical methods and the detection characteristics in water sources.
Chemical Precipitation removal of Boron in Synthetic Wastewater using Microwave Heating
Authors: Sun Minseo , Chun Jun , Ahn Johng-Hwa
Published: December 2024

Objectives : The objective of this study is to investigate the potential for the removal of boron(B) from synthetic wastewater through chemical precipitation using microwave heating to identify the optimal conditions for the removal of boron.Methods : Synthetic wastewater was prepared using boric acid(H3BO3) and distilled water. The range of variables that exert an influence on boron removal included the initial pH 3-13, the calcium hydroxide(Ca(OH)2) dosage of 0.5-10 g per 30 mL(17–333 g/L), and the boron concentration of 100-1,500 mg/L. A face-centered design in response surface method was employed to identify the optimal conditions for boron removal in a continuous scale and to ascertain the interaction of the factors.Results and Discussion : In discontinuous conditions, the maximum removal efficiency was observed at initial pH 3, Ca(OH)2 of 2 g, and the boron concentration of 1,500 mg/L. As the pH value decreased, the removal of boron increased. The greatest removal efficiency was observed when the dosage of Ca(OH)2 was 2-5 g. It was also found that the higher the concentration of boron, the greater the removal efficiency. In the continuous scale, the optimal conditions for boron removal were identified as initial pH 3.3, the dosage of 6.2 g Ca(OH)2, and the boron concentration of 1,500 mg/L, with the removal efficiency of 93%. All independent variables exerted a statistically significant influence on chemical precipitation removal(p<0.05). In comparison to pH(p=0.047), boron concentration(p<0.001) and Ca(OH)2 dosage(p<0.001) demonstrated a more pronounced impact on boron removal. The interaction between boron concentration and Ca(OH)2 dosage was also identified as statistically significant(p<0.001).Conclusion : Chemical precipitation using microwave heating was effective in removal of boron from wastewater, and the optimal conditions in continuous scale through response surface analysis were initial pH 3.3, boron concentration 1,500 mg/L, and Ca(OH)2 dosage 6.2 g(207 g/L).
Removal characteristics for nine species of per-and poly-fluoroalkyl substances using different types of anion exchange
Authors: Son Heejong , An Byungryul , Shin Jeongwoo
Published: December 2024

Objectives : This study aims to compare the removal characteristics of nine PFAS species using two commercial anion exchanges(AIXs) with different matrices and their Cu-modified derivatives.Methods : IRA900-Cu and A860-Cu were synthesized from two commercial AIXs(IRA900 and A860) using a 1% CuCl2·2H2O solution. SEM-EDS analysis and Cu2+ extraction experiments were conducted to evaluate surface characteristics under different matrices and their modification. Batch removal tests, pH effect tests ranging from 4 to 8.5, and isotherm tests(Langmuir and Freundlich) were performed.Results and Discussion : According to SEM-EDS analysis, the (O+N)/C ratio for A860(polyacrylic) was found to be 2.57 times higher than that of IRA900(polystyrene), indicating A860 is more hydrophilic than IRA900. In addition, no significant changes in surface properties, including Cu and Cl elements, were observed after modification. The total uptake of the nine PFAS species by IRA900 was 2.21 times higher than that of A860, due to the greater hydrophobicity of IRA900. The effect of Cu modification on both AIXs was not significant due to the low amount of Cu on the surface, except for the short-chain species(PFBA and PFPeA) in IRA900. While the total uptake was not influenced by pH in IRA900 and IRA900-Cu, it decreased rapidly in A860 at pH 7.0 and 8.5, likely due to its relatively low basicity and hydrophilic matrix. Based on Langmuir and Freundlich isotherm models, the total uptake and KF for IRA900 were 2.97 and 16.7 times higher than those of A860, respectively. Comparing the uptake for each species, higher capacity was generally observed for sulfonic functional groups(PFSA) than for carboxylic functional groups (PFCA) at the same chain length, and the capacity increased with increasing chain length.Conclusion : Higher hydrophobicity of IRA900 plays a key role in PFAS adsorption, regardless of the species, and is less sensitive to basic solution conditions.
Correlation and Prediction Analysis of Cyanobacteria with Water Environment Data
Authors: Yun Sang-Leen
Published: December 2024

Objectives : A study was conducted to implement a predictive for cyanobacteria occurrence, a direct indicator of algae presence. Water quality, river environment, and meteorological data were collected and analyzed at six locations along the Nakdong River in Gyeongsangbuk-do and Daegu City. The primary objective was to establish correlations between various environmental factors and validate the utility of predicting algae(cyanobacteria) occurrences.Methods : Cyanobacteria was designated as the dependent variable for correlation analysis. Water quality parameters associated with algal growth, including chlorophyll-a, water temperature, pH, dissolved oxygen(DO), total nitrogen(TN), and total phosphorus(TP), were utilized as key indicators. Additionally, meteorological data such as air temperature, humidity, cloud cover, precipitation, and solar radiation, as well as flow rate and flow quantity, which are indicators of water body stability, were utilized. The collected data were verified and corrected for accuracy before analyzing correlations between cyanobacteria occurrence and the independent variables. Furthermore, cyanobacteria occurrence was predicted using a random forest algorithm, with a linear regression model serving as a baseline for comparison.Results and Discussion : The data presented a normal distribution. Correlation analysis indicated that previous cyanobacteria occurrences had a significant influence on current occurrences. Water temperature showed a positive correlation with cyanobacteria, while DO exhibited a negative correlation. Flow quantity and flow rate were inversely correlated with cyanobacteria cell density. In terms of meteorological data, air pressure negatively correlated with cyanobacteria occurrence, while air temperature showed a positive relationship. Substantial precipitation significantly reduced cyanobacteria concentrations; however, this effect was less pronounced during periods of low rainfall. The linear regression model, with an R2 value of 0.734, demonstrated considerable explanatory power, indicating its effectiveness in accounting for the variability of the dependent variable.Conclusion : The random forest, built on the linear regression model, successfully captured the overall trend of cyanobacteria occurrence when compared with field measurements. The model consistently maintained predictive performance by effectively recognizing complex data patterns, suggesting its potential for reliable prediction of cyanobacteria occurrence trends in aquatic ecosystems.
Performance Comparison of Basic Pesticide Residue Prediction Models in Domestic Agricultural Environments
Authors: Park Hyun-Geoun , Suh Sang-Ik , Lee Bum-Seok , Lee Hyo-Sub , Ki Seo Jin
Published: December 2024

Objectives : This study assessed the performance of two FOCUS simulation models, Step 1 and Step 2 models which were officially used for pesticide review process in the European Union, in domestic agricultural environments.Material and methods : A performance comparison was made between two models for three selected pesticides (i.e., bifenthrin, fenitrothion and iprodione) which were widely adopted in Korean agriculture. A combination of different crop interception and runoff scenarios was used in the simulation. During the simulation, two selected crops (i.e., citrus crop and pome and stone fruits) were treated with individual pesticides at a concentration of 100 mL 5 times at 30-day intervals by foliar feeding. The simulation results of two models were also validated against field observations complied at around 500 monitoring sites over the period 2018-2023.Results : Our results found that Step 2 model had superior prediction performance in three selected pesticides than Step 1 model, and produced the simulation results which were also in good agreement with the field monitoring data. The residues of three pesticides (i.e., predicted environmental concentration, PEC) in surface water calculated from Step 2 model were generally higher for pome and stone fruits than for citrus crop. Step 2 model also predicted high pesticide residues in sediment under conditions of no crop interception and (extremely) high runoff out of various scenarios provided in the model.Conclusion : All these results demonstrated that FOCUS Step 2 model was capable of estimating PEC values at different environment media under domestic agricultural conditions.
Research on Energy Savings through Floating DO Measuring Device in SBR Wastewater Treatment Method
Authors: Kang Byung Woo , Park Jeong Eun , Koo Ja Hoon , Kwon Dong Myung
Published: December 2024

Objectives : The objective of this study is to propose an optimal operational control method to ensure stable effluent water quality and reduce treatment costs in the SBR(Sequencing Batch Reactor) wastewater treatment process. In particular, the study aims to maintain the dissolved oxygen(DO) concentration required for microorganisms while reducing power costs associated with excessive aeration.Methods : To address issues with conventional fixed DO sensors, such as scum formation, inaccuracies caused by bubbles and strong flow velocities during aeration, and reduced reliability due to fluctuating water levels, a floating DO sensor was introduced to measure DO concentrations in real-time. Based on these real-time measurements, the optimal DO concentration required for microbial activity was calculated, and a system was designed to automatically control the airflow rate set value(SV) of the turbo blower.Results and Discussion : The application of a single-variable DO control method effectively reduced the power consumption required for aeration in the SBR aeration tank. This approach prevented energy waste caused by excessive aeration while maintaining the appropriate DO concentration needed for microbial activity. These results demonstrate that the proposed method improves the reliability and efficiency of the system.Conclusion : The real-time DO control method using a floating DO sensor enables energy savings and ensures stable effluent water quality in the SBR process. The proposed method overcomes the limitations of conventional fixed DO sensors, contributing to reduced power costs and improved process efficiency.
STRUCTURAL CHANGES, UNCERTAINTY, WAYS OF DEVELOPMENT OF THE ECONOMY, MANAGEMENT AND TOURISM
Authors: Vladlenov Denis , Zhygalo Ivan , Kopets Halyna , Denysenko Mykola , Breus Svitlana , Levchenko Oleksandr , Prytula Yehor , Balymov Oleksandr , Pakhnenko Olena , Дідковська Людмила , Удова Людмила , Михайленко Владислав , Kolmakova Valentyna , Русин-Гриник Роман , Тетяна Данько , Melnyk Olha , Zlotnik Marta , Voytsekhovska Yuliya , Yemelyanov Oleksandr , Hachkevych Andrii , Halaz Lina , Yevdokymova Alona , Sira Mariya , Balahurovska Inna , Zhuk Olha , Hoi Nataliia , Drabchuk Nataliia , Dudkevych Vasyl , Matiichyk Andrii , Мороз Людмила Іванівна , Савенко Олена Анатоліївна , Burlitska Oksana , Sholomeichuk Serhii , Chervinska Oksana , Kuzmuk Olga , Kulyniak Ihor
Published: December 2024

All rights reserved. Printed in the United States of America. No part of this publication may be reproduced, distributed, or transmitted, in any form or by any means, or stored in a data base or retrieval system, without the prior written permission of the publisher. The content and reliability of the articles are the responsibility of the authors. When using and borrowing materials reference to the publication is required.
COURT CASES, HUMAN RIGHTS AND PHILOSOPHY AS THE MAIN COMPONENTS OF THE STUDY OF JURISPRUDENCE
Authors: Vladlenov Denis , Boldyriev Serhii , Steshenko Tetiana , Hovorukha Liubov , Linnyk Mykola , Kovalenko Larisa , Koval Katerina , Gorban Tetyana , Mykhailenko Tetyana , Уткіна Марина , Куліш Анатолій , Миргород Валерія , Коваленко Олександр , Пєсцов Р.Г. , Сухицька Н.В. , Деркачова Н.О. , Кончаковська В.В. , Макарова О.В. , Сидоренко Анна , Bodrova Irina
Published: December 2024

All rights reserved. Printed in the United States of America. No part of this publication may be reproduced, distributed, or transmitted, in any form or by any means, or stored in a data base or retrieval system, without the prior written permission of the publisher. The content and reliability of the articles are the responsibility of the authors. When using and borrowing materials reference to the publication is required.
ANALISIS BIAYA PRODUKSI HOMEMADE COOKIES COOKIEKU
Authors: Na'illatulloh Syahda , Zanah Nita Miftakhul , Fitriana Noor Laila
Published: December 2024

This research aims to analyze the production costs of homemade CookieKu Cookies located on Jl. Garuda 53, Banaran, Boyolali, Central Java. The data used refers to production costs in 2024. The research results show that direct raw material costs are IDR. 189,000, direct labor costs Rp. 560,000, and factory overhead costs of Rp. 1,074,000. The total production cost of CookieKu Cookies, with all factors taken into consideration, reached Rp. 1,823,000. The accuracy of data obtained through interviews and direct observation provides a strong basis for a comprehensive evaluation of production costs. The implications of the results of this research can be used to optimize production strategies, identify potential savings areas, and improve overall operational efficiency. With a better understanding of production costs, owners can make more informed decisions in managing their business. In addition, this research also provides valuable insights for other stakeholders, such as investors and suppliers, in understanding the company's cost structure and operational performance.
ANALISIS PERHITUNGAN BIAYA PRODUKSI BERDASARKAN METODE FULL COSTING PADA NOSA ALUMINIUM
Authors: Surya Pratiwi Cindy Afifah , Saraswati Laila Isnaini , Fitriana Noor Laila
Published: December 2024

This research specifically aims to investigate and analyze the production cost calculation process applied in Nosa Aluminium's manufacturing operations using the full costing method. One of the main issues encountered in this study is that Nosa Aluminium has not adopted the appropriate method in setting the selling prices of its products. In collecting data, this research relies on primary qualitative data obtained through in-depth interviews and direct observation. The applied analysis method is descriptive analysis to describe and analyze the production cost calculation process. The results of this research affirm that the use of the full costing method provides greater accuracy in decision-making, especially in the context of setting selling prices of products.
PENGARUH UKURAN PERUSAHAAN DAN STRUKTUR MODAL TERHADAP NILAI PERUSAHAAN MANUFAKTUR SUB SEKTOR ELEKTRONIKA YANG TERDAFTAR DI BURSA EFEK INDONESIA PERIODE 2017-2023
Authors: Jepanya Ginting Pranaldi , Zulkarnaen Zuliana , Iqbal M
Published: December 2024

Penelitian ini bertujuan untuk menginvestigasi pengaruh struktur modal yang diproksikan oleh Debt to Equity Ratio (DER) dan ukuran perusahaan terhadap nilai perusahaan pada perusahaan manufaktur subsektor elektronika yang terdaftar di Bursa Efek Indonesia selama periode 2017-2023. Metode penelitian yang digunakan adalah penelitian kuantitatif. Metode analisis menggunakan teknik regresi linier berganda yang bertujuan untuk menguji hubungan antara variabel-variabel tersebut. Hasil analisis menunjukkan bahwa struktur modal memiliki pengaruh positif yang signifikan terhadap nilai perusahaan (thitung = 3.35, p-value = 0.004), sementara ukuran perusahaan tidak memberikan kontribusi yang signifikan (thitung = -1.32, p-value = 0.202). Uji F menunjukkan bahwa model regresi secara keseluruhan memiliki tingkat signifikansi yang kuat (Fhitung = 6.63, p-value < 0.001). Koefisien determinasi (R²) dari model ini adalah 0.543, yang berarti bahwa 54.3% dari variabilitas nilai perusahaan dapat dijelaskan oleh variabel-variabel prediktor yang digunakan dalam penelitian ini. Implikasi dari penelitian ini adalah pentingnya perusahaan untuk mempertimbangkan secara hati-hati penggunaan utang dalam struktur modal mereka guna mengoptimalkan nilai perusahaan. Saran praktis termasuk pengelolaan risiko finansial yang cermat dan diversifikasi sumber pendanaan untuk mendukung pertumbuhan berkelanjutan. Studi ini juga menggarisbawahi pentingnya penelitian lanjutan untuk mengeksplorasi faktor-faktor tambahan yang dapat mempengaruhi nilai perusahaan di konteks industri yang dinamis.
PENGARUH DEBT TO ASSET RATIO DAN DEBT TO EQUITY RATIO TERHADAP MANAJEMEN LABA PADA PERUSAHAAN BUMN YANG TERDAFTAR DI BURSA EFEK INDONESIA PERIODE 2019-2023
Authors: Ady Shah Putra Zumirel , Anan Malesa , Mulyani Sri
Published: December 2024

Penelitian ini bertujuan untuk menginvestigasi pengaruh Debt to Assets Ratio (DAR) dan Debt to Equity Ratio (DER) terhadap Manajemen Laba pada perusahaan BUMN yang terdaftar di Bursa Efek Indonesia (BEI) periode 2019-2023. Dalam penelitian ini, analisis regresi linier berganda digunakan untuk mengidentifikasi hubungan antara rasio utang dan Manajemen Laba. Data yang digunakan mencakup data keuangan 11 perusahaan BUMN dengan jumlah sampel data sebanyak 55. Hasil analisis menunjukkan bahwa baik Debt to Assets Ratio (DAR) maupun Debt to Equity Ratio (DER) tidak memiliki pengaruh signifikan terhadap Manajemen Laba perusahaan BUMN. Koefisien regresi untuk DAR adalah -0,055 dengan p-value sebesar 0,840, sementara DER memiliki koefisien regresi 0,034 dengan p-value sebesar 0,382. Kedua nilai p-value ini menunjukkan bahwa pengaruh dari rasio-rasio tersebut terhadap Manajemen Laba tidak signifikan secara statistik. Selain itu, model regresi linier berganda yang digunakan dalam penelitian ini menunjukkan nilai R² sebesar 0,018 dan Adjusted R² negatif (-0,020), menandakan bahwa model ini hanya menjelaskan sedikit variasi dalam Manajemen Laba dan bahkan tidak lebih baik daripada model rata-rata.
PENGARUH RASIO SOLVABILITAS DAN LIKUIDITAS TERHADAP KINERJA KEUANGAN PADA PERUSAHAAN INDUSTRI SEKTOR BARANG KONSUMSI YANG TERDAFTAR DI BEI PERIODE 2020-2022
Authors: Muni Nurul Husna , Marviana Ratna Dina , Syaharman Syaharman
Published: December 2024

Penelitian  ini  bertujuan  untuk  mengetahui  pengaruh rasio  likuiditas  dan  solvabilitas  terhadap kinerja keuangan pada perusahaan sektor industri barang konsumsi yang terdaftar di BEI. Variabel yang digunakan dalam penelitian  ini  adalah rasio  likuiditas  dan  solvabilitas  sebagai  variabel  independen  dan Kinerja keuangan sebagai  variabel dependen. Likuiditas diproksikan oleh Current Ratio (X1), rasio solvabilitas diproksikan oleh Debt To Asset Ratio (X2), dan Kinerja Keuangan diproksikan oleh Return On Equity (Y). Jenis penelitian yang digunakan adalah penelitian kuantitatif. Teknik  analisis data yang  digunakan dalam penelitian ini adalah  analisis regresi linear berganda.Dalam melakukan analisis  data,  peneliti  menggunakan  aplikasi  pengolah  data  statistik,  yaitu  IBM  SPSS  versi  29.  Hasil  penelitian menunjukkan  bahwa  likuiditas  (current ratio)  secara  parsial berpengaruh  signifikan terhadap Kinerja keuangan Return On Equity. Solvabilitas (debt to Asset Ratio) secara parsial berpengaruh signifikan terhadap kinerja keuangan (Return On Equity). Secara  simultan  likuiditas  (current ratio)  dan  solvabilitas  (debt to Asset ratio)  berpengaruh  terhadap kinerja keuangan (return on equity).