bluuebunny/crossref_metadata_2025 huggingface dataset:
Social Media Instagram for Promoting Tourism In The Eastern Indonesia
Authors: Kusumasari Adita Ayu , Syafitri Annisa Amelia , Selly Adita Febiola , Buseri Dimas Prastyo , Erlangga Fabyan Raif , Jimenez Genett
Published: March 2024

Indonesia consists of many islands and cultures, so there are many tourist destinations in Indonesia. It is appropriate to introduce tourism in Indonesia by having various tourism destinations. Many methods can be used to introduce Indonesian tourist objects, including current social media that can also be used to promote tourism. This study aims to reveal the influence of social media as a tourism promotion in the eastern part. In this paper, Instagram is the social media focused on researching eastern tourism promotion. Social media Instagram has a large number of users. Currently, the number of Instagram downloads is 1 billion. In this paper, data collection on Instagram accounts that have tourism promotion content will be carried out. Data taken, such as the number of followers and the number of posts, then an account will be determined, which will be the object of research so that later it will produce an analysis of how the Instagram account promotes tourism. Indonesia complies with the elements of the 7C framework
Concerns for Digital Privacy in Business and Management: An overview and Future Discourses Recommendation
Authors: Linando Jaya Addin , Herwanto Guntur Budi
Published: March 2024

This paper aims to highlight the developing awareness of concern for digital privacy from business and management viewpoint. The authors compile data privacy literature in management field and visualize the literature into 4 main clusters of concerns. The 4 main cluster of concerns in data privacy discourse on management field are: internet; roles-trust-security; locations; and consumer privacy. This paper contributes on the development of research and discourse in data privacy and management domain. Besides delivering the overviews of the digital privacy concerns in business and management fields, the paper also places suggestions for future researchers.
Evaluation of occupational radiation dose due to 99mTc and 131I based examinations
Authors: Şahmaran Turan
Published: March 2024

Aims: This study investigates the individual organ doses and the impact on effective dose of radiation emitted from radioactive sources.

Methods: In the conducted research, the standing ICRP adult male phantom defined as the phantom material in the Monte Carlo VMC dose calculation program was used. Subsequently, doses incurred were calculated by defining different doses, distances, and durations for 99mTc and 131I radioactive sources.

Results: Simulation durations (exposure durations) were set at 1 minute and 5 minutes for comparison. The results indicated that both in 1-minute and 5-minute exposures, the doses remained below the ICRP's recommended annual dose limit of 50 mSv/year for occupational exposure.

Conclusion: It was observed that the organ dose and effective dose vary with the source strength and exposure duration. Regardless of how low the doses may be, individuals working in radiation fields must make greater efforts to reduce radiation doses by adhering to the ALARA principles.
Pendampingan Penyusunan dan Publikasi Jurnal Ilmiah Model Penelitian dan Pengabdian bagi Mahasiswa Probolinggo
Authors: Fitria Nurul Jannah Lailatul
Published: March 2024

Lingkungan Perguruan Tinggi diwajibkan melakukan publikasi jurnal ilmiah guna peningkatan mutu kampus dan persyaratan meraih gelar sarjana. Namun mahasiswa masih kesulitan dalam penyusunan jurnal, baik jurnal penelitian dan jurnal pengabdian. Serta mahasiswa belum memahami rumah jurnal yang tepat untuk publikasi jurnal. Pengbdian kepada masyarakat ini diselenggarakan dengan tujuan memberikan pengenalan, pemahaman, dan arahan penyusunan serta mengajak mitra untuk mampu melakukan penyusunan dan publikasi jurnal ilmiah dengan model jurnal penelitian maupun jurnal pengabdian. Kegiatan dengan paparan materi penyusunan jurnal ilmiah, dilanjutkan dengan diskusi bersama mitra, dan pendampingan bagi mitra menyusun dan pengarahan publikasi jurnal ilmiah. Pemaparan materi ini meningkatkan wawasan terkait jurnal ilmiah. Sementara pendampingan penyusunan memudahkan mahasiswa untuk melakukan praktik langsung dalam penyusunan serta memilih rumah jurnal untuk mempublikasi karya. Respon positif yang diberikan adalah 20 mitra menunjukkan keseriusan dalam mendengar materi, berdiskusi, serta menyusun jurnal. Serta ada penyebaran materi melalui media sosial. Hasil monitoring dan evaluasi menunjukkan bahwa seluruh mitra setuju dengan kegiatan pengabdian ini serta membutuhkan kegiatan bertahap dan berkala. Dari hasil wawancara diketahui bahwa terdapat perubahan dan peningkatan pemahaman dan tindakan pada mitra terkait penyusunan dan publikasi jurnal ilmiah dengan jenis jurnal penelitian dan jurnal pengabdian. Kegiatan ini juga menghasilkan luaran naskah jurnal ilmiah.
SCHOOL INFORMATION SYSTEMS AND ALUMNI DATA AT SMK NEGERI 2 TEMBILAHAN
Authors: Sri Rahinda Ayu , Yunita Fitri , Rasyid Ridha Muh. , Usman Usman
Published: March 2024

The thesis, entitled "School Information System and Alumni Data at SMK Negeri 2 Tembilahan", was made against the background of the absence of a school information system that stores alumni data at SMK Negeri 2 Tembilaha, data is still stored in the form of archival documents and the unavailability of school information about alumni data that can be accessed online. In making this system using the waterfall method with PIECES analysis, the system design uses UML modeling. The results obtained are solutions to the difficulty of the community in finding school information and the difficulty of alumni in finding alumni data.
BIBLIOMETRIC MAPPING PUBLICATIONS OF SCIENTIFIC WORK OF INFORMATION SYSTEMS LECTURER AT UIN SYARIF HIDAYATULLAH JAKARTA ON GOOGLE SCHOLAR SYSTEMATIC REVIEW USING RESEARCH RABBIT
Authors: Fetrina Elvi , Murni
Published: March 2024

ABSTRACT
In the modern era dominated by technology, understanding academic developments in the Information Systems Department of UIN Syarif Hidayatullah Jakarta through Google Scholar and Research Rabbit is very important. The research focuses on identifying lecturers' research interests, with the aim of developing a more relevant curriculum for students. Literature studies are used to collect and analyze information from various sources. The research results reveal the latest research topics that lecturers publish, becoming the basis for future research and guidelines for curriculum development according to technological developments. The conclusion emphasizes the importance of adapting research to technological developments and a deep understanding of lecturers' interests to maintain the relevance of the curriculum in an ever-changing academic world. This step is key in preparing students to succeed in a rapidly developing environment. In this context, lecturers' understanding and research helps shape a curriculum that is able to face the challenges of modern technology and produce graduates who are ready to face continuous change.
Keywords : Bibliometrics, Publications, Scientific Work, Google Scholar, Research Rabbit
PENERAPAN METODE AGILE DALAM MANAJEMEN PROYEK: SYSTEMATIC LITERATURE REVIEW
Authors: Hidayah Nur Aeni , Nur Muhammad Asnadi
Published: March 2024

Rapid developments in the business world encourage organizations to be more adaptive and responsive in the face of challenges. To create new products and stay competitive with competitors, organizations need to plan carefully. Efficient project management and optimal use of resources are key to success in this regard. The Agile method has been recognized as an approach that can meet the needs of organizations in the face of rapid change. Therefore, this research will use the Systematic Literature Review (SLR) method to review and summarize previous studies related to the application of Agile methods in project management. After conducting a search with several conditions, the researcher collected journal articles, as many as 16 relevant journal articles were collected for review. The results of the study show that the application of Agile methods helps significantly in project management.
ANALISIS KUALITAS PRODUK TAHU DALAM UPAYA MEMINIMALKAN PRODUK CACAT MENGGUNAKAN METODE SIX SIGMA DAN FUZZY FMEA PADA PABRIK TAHU PAK BUDI
Authors: Azura Rosiana , Nazaruddin Nazaruddin , Suherman Suherman , Hadiyul Umam Muhammad Isnaini , Nur Muhammad
Published: March 2024

Pabrik Tahu Pak Budi merupakan industri kecil menengah yang mengolah kacang kedelai menjadi tahu. Dalam proses produksi masih terdapat kesalahan-kesalahan yang dapat mengakibatkan adanya produk tahu yang rusak/cacat. Oleh karena itu, perlu dilakukan pengendalian terhadap kualitas tahu pada Pabrik Tahu Pak Budi. Tujuan penelitian ini untuk mengukur kinerja dan tingkat cacat produk tahu yang terjadi menggunakan metode Six Sigma, mengidentifikasi faktor penyebab produk cacat, memberikan usulan saran perbaikan dalam upaya meminimalisir produk cacat menggunakan metode Fuzzy FMEA. Six Sigma merupakan metode peningkatan kualitas yang banyak digunakan oleh perusahaan dan organisasi, dengan mengedepankan konsep bahwa cacat produk hanya 3,4 untuk setiap satu juta produk yang dihasilkan. Metode FMEA (Failure Mode and Effect Analysis) adalah metode analisis terjadinya resiko atau kegagalan pada proses. Keterbatasan pada metode FMEA dapat diselesaikan dengan penerapan logika fuzzy. Hasilnya berdasarkan perhitungan nilai DPMO dan level sigma cacat tekstur memperoleh level sigma 3,487, cacat warna memperoleh level sigma 3,767 dan cacat ukuran memperoleh level sigma 3,721. Faktor yang menyebabkan produk tahu cacat/rusak berdasarkan fishbone adalah metode, manusia, material dan mesin. Nilai FRPN tertinggi adalah 720 pada cacat tekstur dengan penyebab tidak adanya SOP. Sehingga usulan perbaikan yang dapat diberikan adalah pembuatan SOP.
ANALISIS PEMASARAN UMKM SAHABAT FRIED CHICKEN UNTUK MENINGKATKAN PENJUALAN MENGGUNAKAN METODE SOAR DAN QSPM
Authors: Burrahman Habi , Kusumanto Ismu , Lubis Fitriani Surayya , Hadiyul Umam Muhammad Isnaini , Nazaruddin Nazaruddin
Published: March 2024

Usaha Mikro, Kecil dan Menengah (UMKM) memiliki peranan yang sangat penting dalam perputaran roda perekonomian di Indonesia. Peningkatan jumlah UMKM ini menjadi alas an salah satu pentingnya strategi pemasaran oleh pelaku UMKM agar tetap bertahan dalam menjalankan usaha  dikarenakan ketatnya persaingan usaha. Penelitian ini bertujuan untuk menganalisis faktor internal dan eksternal yang mempengaruhi stretegi pengembangan usaha di UMKM Sahabat Freid Chicken menggunakan metoda SOAR (Strength, Opportunities, Aspiration, and Result) dan QSPM (Qualitative Strategic Planning Matrix ).  Pada metode SOAR ini melakukan identifikasi dan menganalisa  suatu kekuatan dan peluang sehingga dapat menghasilkan aspirasi, tujuan, strategi dan komitmen agar mendapatkan hasil yang diingankan perusahaan. Selain itu penelitian ini bertujuan untuk memberikan strategi mana yang diprioritas untuk terlebih dahulu dilakukan menggunakan metode QSPM . Hasil penelitian ini mendapatkan 7 strategi alternatif berdasarkan analisis mtariks SOAR yang telah dilakukan, dan pada metode QSPM yang dilakukan terdapat strategi alternatif  Melaksanakan dan mengoptimalkan Memanfaatkan lokasi strategis dan memperluas penjualan dengan aplikasi food delivery untuk meningkatkan eksistensi dan pertahan produk dipasaran dengan nilai skor Tasnya 7,513.
ANALISIS VSM ( VALUE STREAM MAPPING ) PADA PROSES PEMBUATAN PRODUK EGREK SAWIT DI UNIT PANDAI BESI ASADI
Authors: Syalendra Romi jaka , Nofirza Nofirza , Hadiyul Umam Muhammad Isnaini , Melfa Yola  , Misra Hartati
Published: March 2024

Salah satu usaha industri yang sedang berkembang di masyarakat adalah usaha pandai besi. Pandai besi merupakan tempat membuat dan memproduksi alat-alat seperti cangkul, celurit, dodos, parang, pedang dan lain-lain, namun setelah zaman perang selesai maka masyarakat setempat pun mengembangkan usahanya dengan memproduksi alat - alat baru multifungsi yang di butuhkan dalam kebutuhan rumah tangga dan alat-alat pertanian serta perkebunan seperti alat bajak tanah, cangkul, linggis, parang, dan lain sebagainya. Unit pandai besi asadi adalah sebuah unit usaha yang berfokus di bidang produksi alat-alat perkakas dari bahan besi atau yang lainnya, yang beralamatkan di Desa Teratak, Teratak, Rumbio. Berdasarkan hasil survey pada pembuatan egrek sawit, terindikasi adanya waste  pada proses lantai produksi yaitu, pada gerakan kerja seperti gerakan yang tidak perlu, waktu menunggu ( waiting) dan transportasi seperti gerakan berulang-ulang yang tidak perlu. Metode yang dapat digunakan untuk menyelesaikan permasalahan ini ialah dengan Value Stream Mapping, 3 M ( Mura, Muri, Muda) dan five why’s. Setelah melakukan penglahan data didapatkan process cycle time (PCE) adalah sebesar 82,36 % dari sebelum nya yaitu 34,16.
Transcatheter mitral valve therapies: A comprehensive review
Authors: Bonde Riya , Kumbasar Ulaş
Published: March 2024

Less invasive approaches offer an optimal treatment option for patients with severe mitral regurgitation who is not a candidate for surgical intervention. Favorable outcomes of transcatheter aortic valve replacement have produced great interest in the development of novel minimally invasive transcatheter technologies for repair and replacement of the mitral valve. In this review we aimed to provide an overview of the current transcatheter technologies used to treat mitral regurgitation and help clinicians in selecting the optimal therapy for their patients. We also wanted to provoke clinicians and researchers on how these technologies could be further developed in the future.
ДОГОВІР ПРО ДИСТАНЦІЙНУ РОБОТУ: ПОНЯТТЯ ТА ВИДИ
Authors: Білоха Андрій
Published: March 2024

Стаття присвячена розгляду поняття трудового договору про дистанційну працю, його характеристиці та різновидам. Статтею визначено поняття та основні риси трудового договору про дистанційну працю, звертаючи увагу на законодавчі вимоги та регулювання. У статті надається характеристика видів трудових договорів про дистанційну працю, враховуючи різноманіття критеріїв класифікації. Автор визначає теоретичні напрямки дослідження правового явища трудового договору про дистанційну роботу. Вони спрямована на поглиблене розуміння та вирішення актуальних питань, пов'язаних з трудовими договорами про дистанційну працю в сучасному правовому середовищі.
Easy-Starter : An Online Crowdfunding Website Using Blockchain
Authors: Gupta Rohan , Gupta Sandeep Gupta , Gangwar Leher Gangwar , Gupta Avani Gupta , Shinde Vinayak Shinde
Published: March 2024

Crowd funding is a method of internet fundraising that started out as a way for the general public to contribute small sums of money to support the initiatives of creative individuals. Crowdfunding allows individuals to invest in start-up businesses by going via a middleman, like a broker-dealer. The present websites have an issue in that they don't offer the Donor Guarantee Policy and they don't have authority over the funds that donors donate. In this paper, we propose to use blockchain technology for crowdfunding. By doing this, we are able to offer a transparent, safe, and safe crowdfunding process. This article aims to facilitate the creation and funding of campaigns by offering interactive forms for campaign designers and funders to easily construct and approve initiatives. The money that was donated to them can be tracked by the donor. Every transaction will be captured by the blockchain and stored as a block. There are costs involved, a chance of failure, and crowd fundraising is not a charity. This is where blockchain technology comes in to offset the possible dangers associated with the traditional fundraising approach. By using a decentralized approach to crowd funding, we can completely eliminate any dangers associated with the traditional crowdfunding model.
Adsorption of Free Fatty Acids from Crude Palm Oil Using Calcium Silicate (CaSiO3) Adsorbent Glycerol Template
Authors: Sembiring Seri bima , Siahaan Ananda Putra
Published: March 2024

The adsorption of free fatty acids (FFA) in crude palm oil (CPO) using two types of adsorbents, namely Calcium Silicate (CaSiO3) template 5% glycerol (CTG5) and Calcium Silicate (CaSiO3) template 10% glycerol (CTG10). The experimental results showed that the titration method determined the decrease in FFA levels in CPO. This study used mass variations of adsorbent as much as 0.5 g, 1 g, and 1.5 g and agitation time (stirring) for 1, 3, 5, and 7 minutes. Based on the adsorption process, the most significant FFA adsorption results were obtained by using a CTG5 adsorbent with an adsorbent mass of 1.5 g and stirring time for 7 minutes at 80% with the weight of FFA adsorbed as much as 0.203 g FFA of 0.254 g FFA in 2 g of CPO.
Chemical Components Analysis of Kencur (Kaempreria galanga L) Essential Oil Using GC-MS Method and Its Insecticide Tests on Fruit Fly (Bactrocera sp.)
Authors: Surbakti Darwis , Simangunsong Dedy Christopher
Published: March 2024

The hydrodistillation method isolated the essential oils of Kencur (Kaempreria galanga L) using the Stahl apparatus. It was distilled for ± 5-6 hours to produce as much as 0.89% (w/w) essential oil. The chemical components of Kencur essential oil were analyzed using GC-MS, consisting of 7 compounds which seven compounds could be identified, name: Limonene (2.39%), Cineol (2.22%), and terpenes (0.80%). Hexane (1.51%), Borneol (13.23%), Methyl cinnamate (1.50%), ethyl ester (78.35%) and its insecticide test from Kencur essential oil showed Bactrocera sp. mortality. The highest was 96.7% in the 3% ginger rhizome essential oil concentration
Utilization of Carboxymethyl Cellulose (CMC) from Coconut Coir Waste (Cocos nucifera) as a Stabilizer in Red Bean (Phaseolus vulgaris L) Vegetable Milk
Authors: Nasution Rumondang Bulan , Simanungkalit Roberto Carlos
Published: March 2024

Carboxymethyl cellulose (CMC) synthesis from coconut coir waste provides an alternative that can be used as a stabilizer to manufacture red bean milk. The first step is to isolate alpha-cellulose with a 2% NaOH solution. Second, the etherification process is alkalization with isopropanol and 17.5% NaOH solution to produce alkaline cellulose, and then the carboxymethylation process with sodium monochloride acetate (NaMCA) and characterized by FT-IR. The resulting carboxymethyl cellulose is purified by centrifugation. Red bean milk was analyzed using proximate analysis, viscosity, percent stability, pH, and organoleptic content by varying CMC 0.1, 0.2, and 0.5%. The alpha cellulose obtained was 13.37%, and the CMC produced from the etherification and purification process was 5.97 g. The characterization of alpha-cellulose showed (OH) at wave number 3441cm-1, and the CMC characterization showed carbonyl (COO-) at wave number 1604.77 cm-1 and group ether (CH2-O-CH2) at wave number 1419.77. Proximate analysis of red bean milk protein content of 2.75%, carbohydrates 10.27%, fiber 8.5%, and fat 18.57% and results based on viscosity and percent stability were obtained by adding 0.5% CMC and organoleptic test results adding CMC preferably with 0.3%, the texture is not too thick and even, and the aroma of red beans is typical.
Synthesis of Schiff's Base Between Dialdehid Alginate and Chitosan and Testing of Antibacterial Properties
Authors: Kaban Jamaran , Pasaribu Seprinto
Published: March 2024

Schiff base synthesis has been carried out through a condensation reaction between dialdehyde alginate and chitosan. The first step is to oxidize Na-alginate using a sodium periodate (NaIO4) oxidizer, which produces alginate dialdehyde. The next step is FT-IR analysis, degree of oxidation, swelling ratio, and antibacterial properties. The FT-IR analysis results of alginate dialdehyde, which has been absorption peak at 1627.92 cm-1, show stretching group C=O and wave number 1026.13 cm-,1 stretching group COC (cyclic ether). The Schiff base has been absorption peak at 1635.64 cm-1, a stretching vibration group C=N. The degree of oxidation is 33%, and the swelling ratio is 50%. The testing of antibacterial which is conducted has been antimicrobials zone of Escherichia coli bacteria to Schiff base 0 mm and chitosan 0.225 mm; meanwhile, for Staphylococcus aureus bacteria antimicrobials zone which is Schiff base 1.916 mm and chitosan 0.333 mm. It can be concluded that Schiff base can inhibit the growth of Staphylococcus aureus bacteria than Escherichia coli bacteria were not inhibited.
Isolation of Sillica from Pantai Cermin Sand and Modification with Sodium Lauryl Sulfate and Ligan Ethylendyamine Through Coating Method as Absorption of Pb Metal
Authors: Lumban Raja Saur , Lubis Simon Putra
Published: March 2024

Research on the formation of synthesis and modification coating of silica and obtained silica with a quartz structure used to absorb lead metal ions. This isolation was performed by extracting silica from sand with the co-precipitation method using NaOH 7M and then adding HCl 2M. The resulting silica was coated with sodium lauryl sulfate and ethylenediamine to increase adsorption. The FT-IR spectrum on silica shows the presence of Si-O-Si, Si-O-, Si-OH, S–O, SO3, CH2, and NH—Sillica coating, which sodium lauryl sulfate and ethylenediamine ligands were carried out by coating method at pH 2. The results obtained before and after coating on silica were characterized by FT-IR, XRD, and SEM EDX analysis. The FT-IR spectrum on sillica showed the presence of Si-O-Si, Si-O, and Si-OH functional groups. After the coating, there was a change in the spectrum, indicating new functional groups in the S-O, SO3, CH2, and NH spectra. Characterization using XRD shows the diffraction peaks were of 2𝛳 27,6297°, which indicates the amorph. After coating, the diffraction peaks appeared at an angle of 2𝛳 in the area of 19.62 °, 20.47°, 21.04 °, 25.56 °, 26.50 °, and 29.73 ° with a high enough intensity indicating increased crystallinity. The morphology, composition, and size of the silica produced before and after coating were observed by SEM-EDX. Where there is a change in the size before and after a modification, that is 100,788 nm to 85,3773 nm. Silica before and after coating is used as an adsorbent to reduce levels of heavy metal lead (Pb). This analysis showed that the adsorption of Pb²⁺ with silica was 4,5162 ppm, while the adsorption of Pb²⁺ after coating was 1,1146 ppm.
Synthesis of Schiff Bases via Condensation of Aldehydes from Ozonolysis of Purple Passion Fruit Seed Oil with Phenylhydrazine and Aniline and Their Utilization as Corrosion Inhibitor on Steel Metal (Zn) in 0.1N HCl Solution Media
Authors: Sihotang Herlince , Sitio Andreas Dani Hotman
Published: March 2024

Schiff base was synthesized through a condensation reaction between the aldehyde derived from purple passion fruit seed oil and phenylhydrazine (Schiff base I) and the aldehyde derived from purple passion fruit seed oil with aniline (Schiff base II). Aldehydes are obtained from the ozonolysis process of purple passion fruit seed oil using ozone to produce ozonides and then reduced with Zn powder in dilute acetic acid. The formation of aldehyde derivatives of purple passion fruit seed oil is supported qualitatively by the formation of a brick red precipitate through the addition of Fehling reagent and the formation of a silver mirror on the wall of the test tube with the addition of Tollens reagent and a decrease in the number of iodine compared to purple passion fruit seed oil and the results of FT-IR analysis provide a spectrum with a vibration peak at a wave number of 1744.4 cm-1 which indicates the C=O aldehyde group. The aldehyde derivative of purple passion fruit seed oil produced has an iodine value of 110.0467, which is lower than that of purple passion fruit seed oil, which is 122.0644. The formation of Schiff II base resulted in yields of 3% and 70% supported by FT-IR spectrum of vibration peaks at wave numbers 1654 cm-1 and 1602.8 cm-1, which indicated the formation of imines (-C=N-) as a result of condensation between derived aldehyde groups of purple passion fruit seed oil with amine groups of phenylhydrazine and aniline. Testing the iodine number on the Schiff I base and the Schiff II base yielded values of 124.9079 and 117.3266. A corrosion inhibitor test was carried out using the gravimetric method on HCl media with a concentration of 0.1N, 24 hours and various concentrations of compounds 1000, 3000, 5000, and 7000 ppm. Corrosion inhibitor efficiency for purple passion fruit seed oil, Schiff Base I, and Schiff Base II, respectively, were 27.87%, 88.28% and 94.08% at a concentration of 7000 ppm.
Improved Tamarillo (Cyphomandra betacea Sendtn) Fruit Juice Quality with Carboxymethyl Cellulose Extracted from Cassava Peel (Manihot esculenta Crantz)
Authors: Zaidar Emma , Hidayanti Tiara
Published: March 2024

The utilization of Carboxymethyl Cellulose (CMC) from cassava peel (Manihot esculenta Crantz) through the quality of Tamarillo (Cyphomandra betacea Sendtn) juice was carried out through three stages. The first stage is α-cellulose isolation from cassava peel powder using an acid method and then comparing it with commercial cellulose using FTIR analysis. The second stage is an α-cellulose conversion into CMC by alkalization (using isopropanol and NaOH), carboxymethylation (using NaMCA), neutralization (using CH3COOH 90% and ethanol), purification (using distilled water followed by centrifugation and the addition of acetone which produces CMC with positive results), and then comparing isolated CMC with commercial CMC by using FTIR analysis. The last stage is Tamarillo fruit juice preparation with and without CMC addition. At this stage, the concentration of CMC was carried from 0%, 0.25%, 0.5%, 0.75%, 1%, and 1.25%. The resultant juice was analyzed for its quality by stability (letting it stand for 24 hours), pH (with a pH meter), viscosity (with an Ostwald viscometer), vitamin C content (using the iodimetry method), antioxidant activity (using the free radical scavenging method with a solution and using a UV-VIS spectrophotometer), and organoleptic (tests on 30 untrained panellists). The best results were obtained from Tamarillo juice containing 1.25% CMC, which has 73% stability, pH 4.49, viscosity of 77.79 cP, vitamin C content of 25.32 mg/100 g and antioxidant activity of 59%. Organoleptic test results showed that fruit juice with the addition of 0.75% CMC was the most preferred result by panellists based on aroma, taste, texture, and color.
Isolation and Identification of Flavonoid Compounds and Antibacterial Activity Test of the Canyere Badak Plant (Bridelia glauca Blume) (Phyllanthaceae)
Authors: Marpaung Lamek , Toruan Ade Theresia Ulina Lumban
Published: March 2024

Flavonoid compounds from the stem bark of the Canyere Badak plant (Bridelia glauca Blume) have been isolated. 2500 g of Canyere Badak plant stem bark was macerated by methanol, and the methanol extract dissolved in distilled water. The distilled water solution was extracted by partitioning with ethyl acetate repeatedly until negative to 5% FeCl3. The ethyl acetate extract was dissolved in methanol and extracted by partitioning with n-hexane until the n-hexane layer was transparent. The methanol extract was analyzed by thin layer chromatography and separated by column chromatography with a stationary phase of silica gel and a mobile phase of chloroform: methanol (90:10; 80:20; 70:30; 60:40) v/v. Fractions 148-174 were purified by preparative thin layer chromatography using benzene: acetone (80:20) v/v eluent to produce a brownish yellow paste of 10 mg at Rf value of 0,66 using chloroform: methanol (80:20) v/v  as eluent. Based on the analysis of the UV-visible spectrophotometer, it had a wavelength (λ max) of 275 nm. The FT-IR spectrum shows the presence of OH, C=C aromatic, C=O ketones, C-H, C-O-C and C-O groups. The proton Nucleus Magnetic Resonance Spectrum (1H-NMR) indicates the presence of H-2’ & H-6’ protons, H-3’ & H-5’ protons and methoxy protons. Based on the data analysis and interpretation, the isolated compound was a flavonoid of the flavanones group. The antibacterial activity of total flavonoids was determined by agar disk diffusion against Staphylococcus aureus and Escherichia coli bacteria. The results showed that total flavonoids strongly inhibited the growth of Staphylococcus aureus and Escherichia coli bacteria with MIC (Minimum Inhibitory Concentration) value at a concentration of 100 mg/mL obtained a clear zone of 9.5 mm against Staphylococcus aureus bacteria and at a concentration of 100 mg/mL obtained a clear zone of 12.15 mm against Escherichia coli bacteria.
Synthesis of Methyl Cellulose from Rice Husk Cellulose (Oryza sativa L.) with Methylene Chloride Through Etherification Reaction
Authors: Ginting Adil , Sinabariba Novi Yosefin
Published: March 2024

Methyl cellulose is synthesized by an etherification reaction between α-cellulose created by isolating rice husks (Oryza sativa L.) with methylene chloride. Methylcellulose synthesis is performed by combining 1 g α-cellulose with acetone solvents at variations of methylene chloride 6 g, 8 g, 10 g, 12 g, and 14 g for 6 hours, resulting in 0.47 g, 0.60 g, 0.58 g; 0.51 g; and 0.69 g of methylcellulose. The results of methyl cellulose synthesis were tested with Degrees of  Substitution, FT-IR spectroscopic analysis, and surface morphology using SEM. In the variation of methylene chloride, methylcellulose has the highest degree of replacement (14 g of 01,17). The formation of methyl cellulose is supported by FT-IR spectroscopy, namely with the appearance of vibration peaks in the wave number area of 3295.0 cm-1, which shows the -OH group, the C-H stretching group at wave number 2892.4 cm-1, the absorption peak that indicates the presence of C-O-C is found in wave numbers 1152.6 cm-1 and 1021.3 cm-1 where it is an asymmetrical and symmetrical stretching vibration. Morphological analysis using SEM showed that cellulose fibers' surface is smoother than methylcellulose. The average size of cellulose and methyl cellulose fibers is 4.791 μm and 3.828 μm, respectively. Morphological analysis using SEM showed that the surface fibers in cellulose were smoother than methylcellulose. The average size of cellulose and methyl cellulose fibers was 4.791 μm and 3.828 μm.
МЕХАНІЗМИ КОНТРОЛЮ ЗА ФІНАНСОВОЮ ДІЯЛЬНІСТЮ ОРГАНІВ МІСЦЕВОГО САМОВРЯДУВАННЯ В УМОВАХ ДЕФОЛТУ
Authors: Перестюк І. М.
Published: March 2024

Автор аналізує проблему контролю фінансовою діяльністю органів місцевого самоврядування в умовах економічного дефолту. Досліджені різноманітні механізми, такі як: жорсткий моніторинг, систематичний аудит, експертна участь, громадська участь та вжиття санкцій, встановлено, що ці інструменти спільно створюють ефективну систему фінансового контролю. Виявлено, що вони спрямовані на підтримку фінансової стабільності та відновлення економічного розвитку під час фінансових труднощів. Впровадження цих механізмів робить фінансові процеси більш прозорими та підвищує взаємодію між місцевими органами та громадськістю. Крім того, вони формують ефективний інструментарій для забезпечення сталої та відповідальної фінансової політики в умовах фінансових труднощів. Аналізовані механізми контролю, можна зазначити, що вони спільно сприяють уникненню фінансових ризиків та забезпечують високий рівень прозорості та відповідальності в управлінні фінансами місцевих органів. Обґрунтовано, що жорсткий моніторинг дозволяє оперативно виявляти можливі проблеми, систематичний аудит забезпечує об'єктивну оцінку фінансових звітів, експертна участь та громадська участь впливають на створення відкритого середовища для контролю та співробітництва. Підкреслено, що механізми є ключовими у виявленні та вирішенні проблем фінансової нестабільності, особливо в умовах дефолту. Вони впроваджуються з метою забезпечити сталість та ефективність фінансового управління, а їх взаємодія формує систему, яка сприяє відновленню економічного зростання та довіри громадськості до місцевих фінансів. Отже, механізми є важливими компонентами для створення стійкої та ефективної фінансової політики на рівні самоврядування в умовах економічного дефолту. Висвітлено актуальну проблему контролю за фінансовою діяльністю місцевих органів самоврядування в умовах економічного дефолту. Шляхом детального аналізу механізмів, таких як жорсткий моніторинг, систематичний аудит, експертна участь, громадська участь та вжиття санкцій, доведено, що ці інструменти утворюють комплексну та ефективну систему контролю.
Pengaruh Market Value dan Market Capitalization terhadap Return Saham Jakarta Islamic Indeks (JII)
Authors: Isabela Fransisca Putri , Asana Gde Herry Sugiarto , Clarissa Sarita Vania
Published: March 2024

The main consideration in investing to get a profitable stock return. The rate of return on stocks is influenced by several factors, such as market value and market capitalization. The purpose of this study is to determine the effect of low market value, high market value, small market capitalization, and large market capitalization on stock returns in the Jakarta Islamic Index 2020-2022.

This study uses associatives that show the relationship of the independent variable with the dependent variable. The sample of this study is companies listed in the Jakarta Islamic Index 2020-2022. The sampling used in this study used the Purposive Sampling method with certain criteria. Companies that can be used as samples are 20 companies that have met the sampling criteria so that 60 data samples are obtained. This research data uses secondary data sourced from the 2020-2022 financial statements. This study used multiple linear regression analysis.

 The results of this study show that low market value (PBV) variables and small market capitalization do not have a significant effect on stock returns, while high market value (PBV) and large market capitalization have a positive and significant effect on stock returns.
University Culture: A quali-quantitative study on the emotional representations of online learning by psychology university students
Authors: Colaboni Lorenzo , Di Trani Michela , Monaco Silvia
Published: March 2024

The pandemic of covid-19 has led to the conversion from face-to-face to online learning in almost every university in the world. Online learning was perceived by stu-dents as an opportunity and an impediment to the learning process and an obstacle for social contact. The main aim of this research was to explore the representations of dis-tance learning by university students. We collected 127 interviews from university stu-dents and used the paradigm of Emotional Text Mining (EMT) for their analysis. Three factors (Learning Process, University Life, Blended learning) and four clusters (Being in a Relationship, Online learning, Missed Rituality, Process of Adapting) were identified. The factors highlight an unconscious defence mechanism which "separates" the reality of online learning (without relationships) from the reality of the face-to-face learning (with relationships). The clusters show how university students represent online learning as useful at a practical level, but as an obstacle to social contact and a sense of belonging to the university culture. In addition, the interpretation of the clusters reveals an imma-ture process of adaptation of students to the post-pandemic reality. All these findings highlight face-to-face learning as a place for interaction and social sharing and necessary to feel integrated in university culture.
L'Area interna "Appennino Alto Fermano": uno studio di caso
Authors: Calafati Antonio , Mazzoni Francesca , Pizzini Andrea , Zoli Stefano
Published: March 2024

In questo lavoro si conduce una riflessione critica preliminare sulle Aree interne delle Marche con riferimento a quattro temi: le traiettorie di declino socio-economico pluri-decennale che esse hanno seguito; la congruità della loro perimetrazione dalla prospettiva del paradigma dello sviluppo locale consolidatosi in Italia; le profonde ed estese relazioni di interdipendenza tra il territorio delle Aree interne e il resto del territorio regionale; il ruolo dei centri maggiori nel garantire l'accesso a un soddisfacente ‘grado di urbanità' alla popolazione locale. Nel lavoro si sostiene che l'evidenza empirica disponibile – e anche quella preliminarmente presentata nel lavoro – suggerisce un profondo cambiamento dei fondamenti metodologici e teorici della Strategia per le Aree interne delle Marche. Il modo in cui i quattro temi sopra richiamati sono stati sin qui affrontati è di ostacolo alla costruzione di efficaci strategie di rigenerazione economica, sociale ed ambientale. L'importanza e l'urgenza di riconfigurare il sistema delle politiche per le Aree interne sono accresciute dal fatto che esse coprono circa il 44% del territorio regionale.
Informazione bibliografica
Authors: RGI Redazione
Published: March 2024

Francesco Chiodelli, Cemento armato. La politica dell'illegalità nelle città italiane (Giovanni Laino) – Maurilio Pirone (a cura di), Ultimo Miglio. Lavoro di piattaforma e conflitti urbani (Laura Eccher) – Leslie Kern, La gentrificazione è inevitabile e altre bugie (Teresa Graziano) – Giovanni Semi, Manuale per una gentrificazione carina (Teresa Graziano) – Paola Imperatore, Emanuele Leonardi, L'era della giustizia climatica. Prospettive politiche per una transizione ecologica dal basso (Giorgia Scognamiglio) – Maria Chiara Giorda, La Chiesa ortodossa romena in Italia. Per una geografia storico-religiosa (Alberto Vanolo) 
A participant observation of distance teaching in the field of urban design
Authors: Paris Mario , Dezio Catherine
Published: March 2024

This paper explores the difficulties encountered by students of urban design in analysing and interpreting context due to a limited opportunity to personally experience them, a problem that has been exacerbated by the recent pandemic. How can they be supported, and what kind of skills and approaches should be reinforced when educating young architects in such a condition? The authors were instructors at Politecnico di Milano who supervised students in the field of urban planning during the first two years of the Covid-19 pandemic. The present article outlines the approaches adopted by students in achieving awareness about a place when developing their master theses following a semester in our studio.
Ridefinirsi giovani: conflitti, connessioni e solidarietà
Authors: Grazia Gambardella Maria , Magaraggia Sveva
Published: March 2024

Nelle società occidentali i processi di transizione all'età adulta si sono forte-mente complicati ma, nel caso dell'Italia, si parla di una vera e propria pato-logia soprattutto in relazione alle fratture economiche, sociali e culturali de-terminate dagli effetti della pandemia da Covid19 prima, e dalla guerra russa in Ucraina successivamente, hanno ulteriormente complicato la situazione. Le autrici, però, evidenziano quanto i giovani siano in grado di reagire, di at-tuare forme di negoziazione attiva nei confronti delle dinamiche sociali, poli-tiche, economiche che si trovano a vivere; di esprimere repertori di creatività per tenere sotto controllo le principali coordinate della loro vita quotidiana, sfruttando le opportunità del contesto. Il contributo presenta alcuni dei risultati emersi da un'indagine qualitativa – condotta tra agosto 2019 e febbraio 2022 all'interno di un progetto Prin – sulle esperienze di giovani uomini e giovani donne, di età compresa tra i ven-ticinque e i trentaquattro anni, coinvolti in forme di partecipazione politica extra istituzionale, in diverse realtà territoriali. L'analisi realizzata dalle due autrici mette in luce i modi in cui i giovani af-frontano grandi questioni epocali, dalla lotta alle diseguaglianze alle azioni a sostegno della dignità delle persone, dalle questioni di giustizia climatica alla lotta alla precarietà. E un focus specifico è dedicato alle relazioni intragene-razionali e intergenerazionali.
Transformasi Stadion Olah Raga KONI di Kawasan Perdagangan Kota Jambi
Authors: Setyawan Denny Iwan
Published: March 2024

Kota berkembang dari suatu kawasan inti yang meluas ke sekitarnya. Kawasan awal mula ini yang kemudian menjelma menjadi pusat kota. Pada awalnya banyak kota direncanakan dalam skala kecil, sehingga pada kawasan tersebut dipersiapkan fasilitas-fasilitas perkotaan yang lengkap, termasuk fasilitas sosial dan rekreasi yang di antaranya merupakan fasilitas olah raga. Ketika suatu kota berkembang pesat dan terjadi perubahan peruntukan, bisa terjadi suatu fasilitas yang dalam hal ini fasilitas olah raga berupa stadion menjadi berada di tengah-tengah kawasan perdagangan yang berkembang pesat. Dalam situasi demikian, maka muncul permasalahan tentang fungsi stadion tersebut. Secara ekonomi muncul tuntutan agar aset stadion dialihfungsikan menjadi sarana yang memiliki nilai ekonomi selaras dengan peningkatan nilai lahan dan properti di sekitarnya. Kasus tersebut juga terjadi pada Stadion Koni di Kota Jambi. Dimana di samping permasalahan terkait keberadaannya di kawasan strategis ekonomi, juga dengan masih dibutuhkannya stadion ini oleh warga, selain untuk fungsi olah raga, juga sebagai sarana aktivitas sosial. Hal ini mengingat keterbatasan ruang publik di Kota Jambi. Ditambah lagi dengan kondisi penurunan vitalitas kawasan yang diperlihatkan dengan banyaknya underutilized propertiy di sekitar kawasan. Hal lain adalah masih ada area permukiman pada kawasan dan di lingkungan sekitarnya. Bagaimana mempertemukan beragam tuntutan tersebut pada kawasan stadion yang keberadaannya bagi warga kota juga sudah melekat sebagai identitas kawasan. Dan bagaimana stadion tersebut bisa bertransformasi secara fungsi untuk memenuhi kebutuhan programatik yang baru dalam permasalahan kawasan yang ada. Untuk itu dilakukan suatu kajian deskriptif kualitatif dengan melihat morfologi kawasan saat ini dan potensi proyeksi pengembangan kawasan Stadion Koni tersebut di masa depan. Kajian literatur juga dilakukan untuk mendapatkan landasan teori yang bisa dipergunakan. Selain itu, juga dilakukan kajian preseden pada permasalahan yang serupa. Selanjutnya dari simpulan kajian di atas, dirumuskan suatu model desain arsitetur yang bisa memenuhi dan menjawab permasalahan yang ada. Dari penelitian yang dilakukan, ditemukan desain kawasan mixed use yang dapat memenuhi beragam tuntutan untuk menyelesaikan permasalahan kawasan. Selain itu, juga diusulkan suatu solusi terkait transformasi permukiman yang ada pada kawasan. Secara arsitektur dirancang untuk bisa menyelaraskan dengan nilai ekonomi lahan dengan desain bangunan vertikal namun memberikan gradasi skala yang memberi penghargaan pada skala kawasan hunian sekitar dan tentunya pada aspek sosial humanisme-nya. Secara fungsi arsitekturnya selaras dengan pendekatan mixed use kawasan bersifat terbuka dan mengakomodir tuntutan ragam programatik kebutuhan.
Analisis Tebal Perkerasan Jalan dengan Metode AASHTO terhadap Kerusakan Ruas Jalan Cileungsi – Cinyongsong Udik, Kabupaten Bogor
Authors: Prayudyanto Muhammad Nanang , Alimuddin Alimuddin , Suhendra Ahmad
Published: March 2024

ABSTRAK: Pada umunya konstruksi perkerasan yang biasa digunakan di Indonesia yaitu lapis perkerasan lentur dan perkerasan kaku. Lapis perkerasan kaku merupakan perkerasan yang menggunakan beton sebagai bahan pengikat yang terdiri dari lapisan-lapisan yang diletakkan di atas tanah dasar yang telah dipadatkan. Untuk mendesain suatu lapis perkerasan, khususnya perkerasan kaku, terdapat berbagai macam metode seperti metode Bina Marga dan metode AASHTO. Penelitian ini bertujuan untuk menganalisa hasil perencanaan tebal perkerasan kaku yang dihitung dengan Metode AASHTO 1993. Penelitian ini dilakukan pada studi kasus jalan Cileungsi – Cinyosong Kabupaten Bogor. Data primer berupa data survey lapangan lalu lintas tahun 2022, sedangkan data sekunder berupa data curah hujan, data pertumbuhan lalu lintas dan gambar rencana jalan, dan data CBR tanah dasar. Data yang diperoleh, dianalisa menggunakan Metode AASHTO 1993. Dari hasil analisa data diperoleh hasil perkerasan kaku berupa plat beton (concrete slab) setebal 17 cm, lapis beton kurus (lean mix concrete) setebal 5 cm, dan lapis pondasi bawah berupa bahan butiran sirtu/pitrun agregat kelas A. Hasil tersebut merupakan penyesuaian dari kondisi yang ada saat ini di lapangan.Kata Kunci: Metode AASHTO 1993, Tebal Perkerasan, Perkerasan KakuABSTRACT: In general, the pavement construction commonly used in Indonesia are flexible pavement and rigid pavement. Rigid pavement layers are pavements that use concrete as a binder consisting of layers that are placed on top of the compacted subgrade. To design a pavement layer, especially rigid pavement, there are various methods such as the Bina Marga method and the AASHTO method. This study aims to analyze the results of the planning of rigid pavement thickness calculated by the 1993 AASHTO method. This research was conducted on a case study of the Cileungsi - Cinyosong road, Bogor Regency. Primary data obtained in the form of field survey data for 2022 traffic, while secondary data in the form of rainfall data, traffic growth data and road plan drawings, and subgrade CBR data. The data obtained were analyzed using the 1993 AASHTO method. From the results of the data analysis, the results obtained were rigid pavement in the form of a concrete slab with a thickness of 17 cm, a layer of lean concrete with a thickness of 5 cm, and a sub-base layer of granular material. pitrun aggregate class A. These results are an adjustment to the current conditions in the field. Keywords: 1993 AASHTO Method, Pavement Thickness, Rigid Pavement
Pemilihan Metode Pembayaran Menggunakan Termin dan Turnkey pada Proyek Kontruksi di Banda Aceh
Authors: Hayati Kemala , Mariska Andra Okta , Fatimah Aldina
Published: March 2024

Pada proyek konstruksi, realisasi penerimaan pekerjaan ditentukan oleh cara pembayaran yang telah ditetapkan dalam surat perjanjian (kontrak) konstruksi, sistem pembayaran ada 2 jenis yaitu sistem pembayaran termin dan turnkey, dimana sistem pembayaran ini dibedakan berdasarkan cara pembayarannya yang terdiri dari termin pembayaran secara bertahap dan turnkey pembayaran yang dilakukan setelah pekerjaan selesai. Tujuan penelitian ini untuk mengetahui perbandingan ancaman dan peluang yang dapat merugikan kontraktor dalam pemilihan sistem pembayaran antara sistem pembayaran termin dan turnkey yang berpengaruh pada  proyek dengan kontrak design-bid-build di Kota Banda Aceh, sumber data dalam penulisan ini menggunakan dua jenis, yaitu: data primer dan data sekunder, penelitian ini menggunakan metode Strength, Weakness, Opportunities, Threats (SWOT) dan data primer adalah data yang diperoleh langsung dari lapangan, yaitu data kuisioner yang akan disebarkan kepada kontraktor, konsultan dan anggota tim proyek, data sekunder adalah data yang diperoleh dari jawaban responden yaitu perusahaan pelaksana yang berdomisili di Banda Aceh, dari hasil pengujian validitas dan realibilitas yang diperoleh, nilai rata rata dari uji validasi  setiap variabel adalah 0,444. Dan untuk uji reliabilitas r hasil= 0,753 > r tabel = 0,2786, dari hasil uji validasi terdapat 4 pernyataan yang tidak valid. Dalam pengujian analisis pembayaran termin dan turnkey menggunakan analisis SWOT diperoleh bahwa sistem pembayaran termin didapatkan nilai x = -0,15 dan y = -0,4 yang berada di kuadran IV, dimana merupakan situasi yang tidak menguntungkan dari berbagai ancaman dan kelemahan internal dan eksternal. Sedangkan pembayaran turnkey memperoleh nilai x = -0,07 dan y = 0,02 berada pada kuadran III, dimana merupakan situasi mampu memanfaatkan peluang yang ada sehingga dapat mengoptimalkan ancaman dan kelemahan yang akan terjadi.