bluuebunny/crossref_metadata_2025 huggingface dataset:
Literature Review: Sharia Capital Market on Indonesia's Economic Growth
Authors: Riswanda Joni , Toriq Agil , Attiyah Dhiya Salfa , Tamara Dita , Azkhari Sisca
Published: April 2024

The purpose of this journal research is to conduct an analysis of the Islamic capital market on Indonesia's economic growth, this research uses the literature review study method with research data on articles and scientific journals as many as 5 journals that have been reviewed with a series of library data collection activities, reading and recording, and managing research materials. The results of the analysis show that Islamic stocks and sukuk have a positive and significant influence on national economic growth. This indicates that investment in both instruments can make an important positive contribution to Indonesia's economic development. Islamic stocks, showing a significant positive influence on economic growth, utilize sharia principles to provide sustainable profits for investors and a positive contribution to the national economy as a whole. Sukuk, as an instrument of Islamic debt, also plays an important role in supporting economic growth by providing a sustainable source of funding for economic projects. Although Islamic mutual funds have a significant negative influence on economic growth, these findings show that they still have the potential to support a sustainable Islamic financial sector in Indonesia.
Influence of Organizational Culture and Leadership Style on Employee Performance
Authors: Fadhilah Istiyanti Afifah , Azmawaroh Nasution Dini , Stepy Natalie Laurensia , Intania Kolin Ludgardis
Published: April 2024

Along with the birth of various kinds of organizations which certainly have a variety of organizational cultures and leadership styles applied, it will produce different employee performance in each organization, some of which are satisfied, sufficient, or even dissatisfied. Even the leadership style and culture in an organization can reflect how the character of the organization is, whether the system is running optimally or there are still many mistakes that must be corrected. Because basically these two things will greatly affect the sustainability of the organization, especially in the long term, so that these two factors should be considered in the implementation of the management of an organization. Therefore, this study aims to determine the impact of organizational culture and leadership style on employee performance, this research was conducted using the literature review method, with data in the form of 4 scientific journals that have been reviewed. The results obtained show that organizational culture and leadership style have a significant influence on employee performance, it is concluded that the more effective the system used by the organization, it will have a positive impact on employee performance, and vice versa when the organization is unable to implement an effective system and tends to lag behind the times, it will have a negative impact on employee performance.
The Influence of Leadership Style and Work Motivation on the Performance of PT. Ramayana Lestari Sentosa Tbk Ciputat South Tangerang City
Authors: Nazwa Laisa An , Darzimal Ilham Daniswara , Faradila Syabilla , Alvahrezi Varel , Azzahra Veira Veronia
Published: April 2024

The purpose of this study was to determine the influence of leadership style and work motivation on employee performance at PT. Ramayana, Teras Kota Tangerang Selatan branch. The method used in this research is quantitative method with a population and a sample of 60 employees. Data analysis in this study includes validity test, reliability test, correlation, multiple regression analysis, coefficient of determination, classical assumption test and hypothesis testing. The results of the study partially leadership affect employee performance while work motivation has no effect on employee performance. Simultaneously, the leadership style and work motivation are tested on employee performance. This can be seen from the results of the F test, the value of Fcount> Ftable: 43.390> 3.09 and a significant value of 0.000 <0.05.
Pengaruh Motivasi dan Kompensasi terhadap Kinerja Karyawan pada PT. Bukit Murah Group di Kota Bogor
Authors: Azwina Diana , Lahagu Yurniwati
Published: April 2024

Penelitian ini bertujuan untuk mengetahui pengaruh Motivasi dan Kompensasi terhadap Kinerja Karyawan pada PT. Bukit Murah Group. Jenis penelitian ini yaitu penelitian kuantitatif. Populasi dan sampel dalam penelitian ini adalah seluruh karyawan yang bekerja pada PT. Bukit Murah Group sebanyak 53 orang. Teknik analisis data yang digunakan yaitu:  uji instrumen (uji validitas dan uji reliabilitas), uji asumsi klasik (uji normalitas, uji multikolonieritas, uji heterokedastisitas), analisis regresi, analisis korelasi, analisis koefisien determinasi, dan uji parsial dan uji simultan. Hasil penelitian diperoleh motivasi berpengaruh terhadap kinerja karyawan dengan regresi Y = 11,088 + 0,768 X1, nilai koefisien korelasi sebesar 0,884. Artinya kedua variabel memiliki tingkat hubungan yang sangat kuat, dengan koefisien determinasi sebesar 78,2% dan  uji t diperoleh t hitung 3,904 >  t tabel 2,937. Kompensasi kerja berpengaruh terhadap kinerja karyawan diperoleh regresi Y = 11,642 + 0,764 x2, dan nilai koefisien korelasi sebesar 0,886. artinya kedua variabel memiliki tingkat hubungan yang sangat kuat dengan koefisien determinasi sebesar 78,6%. Hasil uji F motivasi dan kompensasi berpengaruh terhadap kinerja karyawan dengan persamaan regresi Y = 9,326 + 0,402 x1 + 0,415 x2 dan nilai koefisien korelasi sebesar 0,914. artinya kedua variabel memiliki tingkat hubungan yang sangat kuat dengan koefisien determinasi sebesar 83,6%. Hasil uji Fdiperoleh f hitung 127,137 > f tabel 3,183.
The Effect of Price and Promotion on Purchasing Decisions at Alfamart Cemara 2 Karawaci Tangerang Banten
Authors: Jastini Jastini , Nurul Faroh Wahyu
Published: April 2024

This research aims to determine the effect of price and promotion on purchasing decisions at the Alfamart Cemara2 Karawaci Store. This research uses quantitative methods. The data source for this research is primary data from a sample of Alfamart Cemara2 Karawaci consumers. Data collection was carried out using a Slovin sample with a population of 91 respondents. The results of this research show that price has a significant positive influence on purchasing decisions. Promotion has a significant positive influence on purchasing decisions. Price and promotion have a significant positive influence simultaneously on purchasing decisions by showing that the Fcount value is 461.132 > Ftable 3.100 or the sig value is 0.000b < 0.05. So H0 is rejected and H3 is accepted.
Influence of Product Quality, Brand Image, and WOM Against the Purchase Decision of Herborist Products in Batam City
Authors: Susanto Fernando , . Suhardi
Published: April 2024

This research aims to determine the influence of product quality, brand image, and word of mouth on the decision to purchase Herborist products. The independent variables studied are product quality, brand image, and word of mouth, while the dependent variable is purchasing decisions. The population of this research is all consumers of PT. Sukses Jaya Indah, Batam, the exact number of which is not known. The sample for this research consisted of 170 respondents using non-probability sampling techniques, namely saturated sampling. Data collection was carried out through distributing questionnaires and data analysis. The results show that product quality has a significant influence on purchasing decisions, brand image has a significant influence on purchasing decisions and word of mouth has a significant influence on purchasing decisions. Apart from that, research shows that product quality, brand image and word of mouth together (simultaneously) have a significant influence on purchasing decisions.
The Influence of Product Quality, Promotion and Product Diversity on Customer Purchasing Decisions Indomaret Orchid Park 11
Authors: Simanjuntak Juntaris Parbisukan , Khoiri M
Published: April 2024

This research aims to assess the influence of product quality, promotion and product diversity on the purchasing decisions of Indomaret Orchid Park 11 customers. The subjects used as the population for this study are individuals who purchased at Indomaret Orchid Park 11, Batam City in 2023, the exact number is not known, while the sample consisted of 204 respondents selected using the Jacob Cohen formula method drawn using purposive sampling. To analyze the data, the multiple linear regression method was used to test data quality, classical assumptions, influences and hypotheses. The results of multiple linear regression analysis show that product quality has an impact of 21.3% on purchasing decisions. Promotions have an impact of 31.6% on purchasing decisions. Product diversity has an impact of 29.7% on purchasing decisions. From the analysis of the coefficient of determination (R2), it can be concluded that the combination of product quality, promotion and product diversity can explain around 68.2% of the variation that occurs in purchasing decisions. In addition, the t test and F test show that product quality, promotion and product diversity partially or jointly have a positive and significant effect on Indomaret Orchid Park 11 customers' purchasing decisions.
Effects of Profitability, Liquidity, and Leverage on Environmental, Social & Governance (ESG) Disclosures with Company Size as a Moderation Variable
Authors: Fatika Masyitoh Fitra , Indrabudiman Amir
Published: April 2024

Perekonomian dunia sudah saling terhubung melalui perdagangan dan Investasi, maka permasalahan mengenai pelaporan apa yang harus diungkapkan oleh perusahaan kepada pemangku kepentingan menjadi suatu hal yang penting. Belakangan ini pengungkapan ESG telah menjadi tren baru bagi investor dalam menentukan keputusan investasinya. Hal ini yang menyebabkan banyak perusahaan mulai menerapkan ESG kedalam bisnisnya, namun tidak sedikit perusahaan yang mengabaikan penerapan ESG. ESG Sector Leaders IDX KEHATI adalah Indeks saham berbasis ESG yang diluncurkan pada tanggal 20 Desember 2021 oleh Yayasan KEHATI bekerja sama dengan Bursa Efek Indonesia merupakan Indeks terbaru dan Indeks ini dibentuk untuk melengkapi Indeks SRI-KEHATI yang sebelumnya telah diluncurkan pada tahun 2009 dan menjadi acuan investasi ESG di pasar modal Indonesia. Penelitian ini bertujuan untuk menguji pengaruh profitabilitas, likuiditas dan leverage terhadap pengungkapan ESG dengan ukuran perusahaan sebagai variabel moderasi (Studi Empiris Pada Perusahaan Indeks ESG Sector Leader IDX Kehati Di BEI Tahun 2022). Total sampel yang digunakan 48 perusahaan yang terdaftar di ESG Sector Leaders IDX KEHATI berdasarkan pengungkapan Annual Report tahun 2022. Model penelitian yang digunakan dalam penelitian ini adalah Moderated Regression Analysis dengan menggunakan Software Jamovi V.2.3.28. Hasil penelitian menunjukkan profitabilitas tidak berpengaruh terhadap pengungkapan ESG, sedangkan leverage berpengaruh terhadap pengungkapan ESG. kemudian ukuran perusahaan dapat memoderasi pengaruh profitabilitas, likuiditas, leverage terhadap pengungkapan ESG.
Analisis Online Costumer Review dan Persepsi Harga Pengaruhnya terhadap Keputusan Pembelian Pakaian Erigo di Shopee pada Mahasiswa/I Jurusan Manajemen Unimed
Authors: Puspita Sari Mulia , Sarah Syahreza Dina
Published: April 2024

Tujuan. Penelitian ini bertujuan untuk menguji dan menilai pengaruh Online Customer Review dan Persepsi Harga terhadap keputusan pembelian pakaian brand erigo di platform Shopee.

Metode. Penelitian ini merupakan penelitian kuantitatif. Data dikumpulkan dengan menyebarkan kuesioner, menggunakan teknik purposive sampling kepada sampel sebanyak 100 responden yang merupakan Mahasiswa/i Jurusan Manajemen Universitas Negeri Medan stambuk 2020-2022. Data yang terkumpul dianalisis melalui penerapan regresi linier berganda dan pengujian hipotesis.

Hasil. Hasil penelitian menunjukkan bahwa Online Customer Review dan persepsi harga baik secara parsial maupun secara bersama-sama, memiliki pengaruh positif dan signifikan terhadap keputusan pembelian. Hal ini dibuktikan dari hasl uji simultan (uji F) dan hasil uji parsial (uji t) juga menunjukkan nilai signifikan dari dua variabel yang mendukung hipotesa.

Implikasi. Implikasi penelitian ini adalah pentingnya ulasan pelanggan dan persepsi harga dalam memengaruhi pembelian online, khususnya untuk merek pakaian Erigo di Shopee. Ini menunjukkan bahwa bisnis perlu meningkatkan kualitas produk dan reputasi merek, serta menyesuaikan harga sesuai dengan pandangan konsumen. Ini juga memberi wawasan kepada mahasiswa dan praktisi pemasaran tentang perilaku konsumen dalam belanja online.
Pengaruh Kualitas Produk dan Harga terhadap Keputusan Pembelian Pada Produk Lipstik Implora (Studi kasus pada Mahasiswi Reguler C Manajemen dan Bisnis di Universitas Pamulang)
Authors: Mardiana Anis , Faroh Wahyu Nurul
Published: April 2024

Penelitian ini bertujuan untuk mengetahui pengaruh kualitas produk dan harga terhadap keputusan pembelian produk lipstik implora. Penelitian ini dilakukan pada Mahasiswa Reguler C Manajemen dan Bisnis Di Universitas Pamulang. Metode penelitian ini menggunakan metode kuantitatif. Jumlah sampel yang diperoleh sebanyak 90 orang. Hasil penelitian ini menunjukan kualitas produk memiliki pengaruh positif signifikan terhadap keputusan pembelian dengan nilai uji hipotesis parsial diperoleh thitung 3,570 > T tabel1,984 atau nilai Sig 0,001 < 0,05 dapat disimpulkan bahwa kualitas produk berpengaruh kepada keputusan pembelian secara parsial. Harga memiliki pengaruh positif signifikan terhadap kepuasan konsumen dengan nilai uji hipotesis parsial diperoleh Thitung 3,699 > Ttabel 1,984 atau nilai Sig 0,000 < 0,05 dapat disimpulkan bahwa harga berpengaruh kepada keputusan pembelian secara parsial. Kualitas Produk dan harga memiliki pengaruh positif signifikan terhadap keputusan pembelian dengan nilai uji hipotesis simultan diperoleh Fhitung 60.755 > Ftabel 3,99 atau nilai Sig 0,000 < 0,05 dapat disimpulkan bahwa kualitas produk dan harga berpengaruh terhadap keputusan pembelian secara simultan.
Ethical Leadership To Individual Performance Mediation Of Workplace Friendship
Authors: Nisa' Latifatul Khoirun , Pujianto Wahyu Eko
Published: April 2024

Tujuan dalam penelitian ini adalah 1)untuk menganalisis variabel ethical leadership terhadap workplace  frienship, 2)untuk menganalisis varaiabel workplace  frienship terhadap individual performance, 3)untuk menganalisis variabel ethical leadership terhadap individual performance. Penelitian ini menggunakan pendekatan kuantitatif dengan populasi karyawan PT. Trikayarasa Jaya Food. Teknik pengambilan sampel dalam penelitian ini menggunakan sampel jenuh. Sampel yang digunakan adalah seluruh karyawan yang berjumlah 100. Pengumpulan data dilakukan melalui kuesioner. Analisis dalam penelitian ini menggunakan Partial Least Square (PLS) dengan software SmartPLS 4.0. Terdapat dua spesifikasi model yang digunakan dalam PLS yaitu: outer dan inner model. Hasil dari penelitian ini ditemukan bahwa ethical leadership berpengaruh terhadap workplace  frienship, workplace  frienship berpengaruh terhadap individual performance, dan ethical leadership tidak berpengaruh terhadap individual performance.
The Effect of Entrepreneurial Leadership on Individual Performance: Learning Capacity as Mediation
Authors: Paraswati Ajeng Dyah , Pujianto Wahyu Eko
Published: April 2024

PPenelitian ini mempunyai tujuan supaya tahu effect entrepreneurial leadership terhadap individual performance dengan learning capacity sebagai mediasi pada usaha catering samaniah. Penelitian ini menggunakan data primer berbentuk questioner dengan responden seluruh karyawan Usaha Catering Samaniah sebanyak 47. Teknik pengambilan sampel yang dipergunakan pada penelitian ini yakmi purposive sampling. Pengujian penelitian ini mempergunakan path analysis serta guna menguji pengaruh variabel intervening menggunakan uji upsilon V dengan software Smart PLS versi 4.0. Penelitian ini memiliki hasil yang menunjukkan yakni (1) entrepreneurial leadership memiliki pengaruh yang positif terhadap learning capacity, (2) learning capacity tidak memiliki pengaruh yang positif terhadap individual performance, (3) entrepreneurial leadership berpengaruh yang positif terhadap individual performance.
Pengaruh Harga dan Kualitas Pelayanan terhadap Kepuasan Konsumen pada Nissa Make Up di Ciledug
Authors: Andrian Apriansyah Andrian apriansyah , Aldila Rahma Putri
Published: April 2024

Tujuan penelitian ini adalah untuk mengetahui pengaruh Harga dan Kualitas pelayanan terhadap kepuasan konsumen pada Nissa Make Up di Ciledug. Penelitian ini adalah jenis penelitian kuantitatif dengan menggunakan metode asosiatif, teknik pengumpulan data menggunakan metode kusioner/angket, populasi dalam penelitian ini adalah seluruh konsumen  Nissa Make Up di ciledug yaitu sebanyak 73 konsumen, teknik pengambilan sampel menggunakan rumus jenuh. Teknik analisis data dalam penelitian ini yaitu uji regresi linear berganda dengan menggunakan alat bantu SPSS versi 26. Hasil penelitian ini menunjukan bahwa Harga berpengaruh terhadap Kepuasan Konsumen pada Nissa Make Up di Ciledug. Kemudian Kualitas pelayanan berpengaruh terhadap Kepuasan konsumen pada Nissa Make Up di Ciledug. Harga dan Kualitas pelayanan berpengaruh secara simultan terhadap Kepuasan Konsumen pada Nissa Make Up.
Pengaruh Harga dan Promosi terhadap Keputusan Pembelian pada Triple Jack Coffee House Ruko Evergreen Citra Raya Tangerang
Authors: Selfi Oktaviani  , Alvin Praditya
Published: April 2024

Tujuan penelitian ini adalah untuk mengetahui pengaruh Harga Dan Promosi terhadap Keputusan Pembelian Pada Triple Jack Coffee House Ruko Evergreen Citra Raya Tangerang. Metode penelitian yang digunakan adalah metode deskriptif kuantitatif. Teknik sampling yang digunakan yaitu non probability sampling, teknik pengambilan sampel menggunakan rumus Rao Purba dengan batas kesalahan yang ditorelir sebesar 10% sehingga diperoleh sampel sebanyak 96 responden. Sedangkan teknik penguumpulan data primer melalui kuesioner yang diolah menggunakan sistem aplikasi SPSS Versi 27. Metode analisis data menggunakan uji validitas, uji reliabilitas, uji asumsi klasik, analisis regresi, koefisien korelasi, koefisien determinasi, dan uji hipotesis. Hasil penelitian ini adalah harga berpengaruh positif dan signifikan secara parsial terhadap keputusan pembelian. Promosi berpengaruh positif dan signifikan secara parsial terhadap keputusan pembelian. Harga dan Promosi secara simultan berpengaruh signifikan terhadap keputusan pembelian.
Pengaruh Receivable Turnover dan Working Capital Turnover terhadap Net Profit Margin pada PT Nippon Indosari Corpindo Tbk Periode 2013-2023
Authors: Waruwu Zebadia , Jati Waluyo
Published: April 2024

Penelitian ini bertujuan untuk mengetahui pengaruh Receivable Turnover dan Working Capital Turnover terhadap Net Profit Margin pada PT Nippon PT Nippon Indosari Corpindo, Tbk Periode 2013-2022. Metode penelitian yang dilakukan dengan menggunakan deskriptif kuantitatif yaitu data yang berupa angka. Sampel yang digunakan adalah laporan keuangan PT Nippon Indosari Corpindo, Tbk Periode 2013-2022. Untuk mengetahui ada atau tidaknya hubungan antara pengaruh Receivable Turnover dan Working Capital Turnover terhadap Net Profit Margin pada PT Nippon Indosari Corpindo, Tbk maka menggunakan metode analisis regresi linear berganda. Pengelolaan data diolah dengan menggunakan program SPSS versi 25. Dari hasil penelitian menunjukan bahwa secara parsial Receivable Turnover berpengaruh namun tidak signifikan terhadap Net Profit Margin (thitung 2,332 > ttabel 1,812 dan 0,052 > 0,05). Working Capital Turnover secara parsial berpengaruh signifikan terhadap Net Profit Margin. (thitung 6,545 > ttabel 1,812 dan 0,000 < 0,05). Secara simultan Receivable Turnover dan Working Capital Turnover berpengaruh signifikan terhadap Net Profit Margin (Fhitung > Ftabel 21,524 > 4,74 dan 0,001 < 0,05). Nilai Adjust R menunjukkan bahwa variabel independen yang digunakan dalam penelitian telah berkontribusi dalam pembetukan Net Profit Margin sebesar 92,7%. Sedangkan sisanya dipengaruhi oleh variabel lain diluar model penelitian.
Post-COVID Effect: Private Tutoring Phenomenon
Authors: Syahidah Farah Aliyah , Sholekah Masrurotus , Wati Erna Sylvia Wati
Published: April 2024

Abstract: COVID-19 has made various sectors not work well, especially education. School holidays due to social distancing policies have caused private tutoring businesses to mushroom, this continues to this day. This research aims to find out the management system of private tutoring, particularly in the context of COVID-19-induced social distancing and lockdown which have led to collapses in many sectors, such as economics, education, tourism, and other sectors. This makes the private tutoring business so popular because it is cheap and children can tutor from home. The method in this research uses a qualitative approach with the method of interviews and observations. The results of this study show that private business leagues have used some aspects of management correctly, even though it has not been performed perfectly.
The Role of Community Management in Sustainable Marketing
Authors: Luthfiana Ainul , Rusandi Deby Santyo , Arisyahidin Arisyahidin , Askafi Eka
Published: April 2024

Sustainable marketing requires studying consumer behaviour to design appropriate communication messages so they can convey business values ​​effectively. Responsive marketing tends to act as a market controller rather than being controlled by the market. Therefore, studies are needed that respond to pressures, behaviour and habits, trends, and market impacts to find out the most appropriate strategies and processes to capture the direction of the strongest specific desires of the market. Identifying meaningful consumption patterns is an important strategy in optimizing sustainable marketing which in practice can reduce excessive media use, reduce unnecessary waste of time and effort, and can focus more on specific education for communities based on their core needs. Therefore, this case study and the literature review find that community works role in Doesoen Kopi Sirap, Semarang Regency, Indonesia, concludes that community management is crucial in implementing sustainable marketing.
Product Development Strategies to Boost Sales on PT Aksamalam Adi Andana
Authors: Aditya Erin , Tirta Nyoman Afinda Nimala , Wahyudi Ana Tri
Published: April 2024

This study aims to find out how PT Aksamala Adi Andana in carrying out its product development strategy to increase sales. The sampling method in this study is included in the type of Quota Sampling, where the author interviewed several employees related to the study. The total population in this study was 50 consisting of all employees of PT Aksamala Adi Andana. There are 3 people concerned according to the author's title and related to the company to be used as a sample for research data collection. Primary data collection was carried out by conducting interviews with 3 samples that had been selected. In this study, it used variable product improvement strategies with 3 indicators, namely quality, features, and style. The application of quality indicators gives good results because the company has carried out quality control so that the products sold have been first tested. For the indicators, the company's features add more value so that consumers get various benefits from Habbie products. The style indicator provides various fragrances so the consumers can easily determine the product according to their favorite fragrance. In addition, the Habbie telon oil has a special edition with unique packaging that is expected to increase buying interest. The results of these 3 indicators had a very good impact because the sales had increased compared to the previous year. From these good results, the company still has obstacles in the production part due to the increase in damaged products.
The Success of a Start-Up: Examined from Creativity, Innovation, and Knowledge
Authors: Munir Miftahul
Published: April 2024

This study describes the phenomenon of the success of start-up businesses in Tulungagung, indicating stagnation and suboptimal performance, examined through the aspects of creativity, innovation, and the knowledge of the entrepreneurs. The aim of this study is to elucidate the impact of creativity, innovation, and entrepreneurial knowledge on the success of startup ventures. The research employs a quantitative approach, utilizing a survey distributed through questionnaires to gather responses from 60 startup entrepreneurs. Multiple linear regression analysis is employed to analyze the data. The findings of the research suggest that creativity does not exert a significant influence on the success of startup businesses, and similarly, innovation does not play a significant role in determining their success. On the other hand, entrepreneurial knowledge demonstrates a positive and noteworthy effect on the success of startup businesses. Concurrently, when considered together, creativity, innovation, and entrepreneurial knowledge collectively exhibit a positive and significant impact on the success of startup businesses. In summary, an enhancement in creativity, product innovation, and entrepreneurial knowledge, when undertaken collectively, leads to an augmentation in business success. Conversely, a simultaneous decrease in these factors results in a decline in business success.
Exploratory Study on the Relationship Between Age, Reproductive Stage, Body Condition Score, and Liver Biochemical Profiles in Rembi Breed Ewes
Authors:   Laboratory of Research on Local Animal Products, Institute of Veterinary Sciences, University of Tiaret, Tiaret, Algeria., Hamza Mounira Chahnaz , Bourabah Akila ,   Laboratory of Research on Local Animal Products, Institute of Veterinary Sciences, University of Tiaret, Tiaret, Algeria.
Published: April 2024

Background: The Rembi sheep breed is renowned for its exceptional meat quality and significant economic profit. Nevertheless, there is a gap in research on the hepatic parameters of this breed in Algeria despite the considerable value of the liver in the Algerian population’s diet. Objectives: The research aimed to determine the impact of physiological factors (age, physiological stage, and body condition score) on biochemical sheep liver parameters. Methods: Sixty clinically healthy female Rembi breed sheep, aged between 3 months and 7 years, raised at the Technical Institute of Livestock (ITELV) Ksar Chellala Farm in Tiaret Province, Algeria, were selected for biochemical analysis and assessing aspartate aminotransferase (AST), alanine aminotransferase (ALT), gamma-glutamyl transferase (GGT), alkaline phosphatase (ALP), total bilirubin (TBIL), direct bilirubin (DBIL), albumin (ALB), and total protein (TP). Results: The concentrations of AST, ALP, and GGT increased significantly (P≤0.001) in young sheep, while ALT and TP levels decreased (P≤0.05). However, a high level of GGT (P<0.001) was also observed in lactating ewes, and during pregnancy, females have a low level of ALP (P<0.001). Furthermore, the body condition score does not affect any of the measurements. Conclusion: Considering the animal’s age and physiological stage is critical before interpreting the results.
A pulse oximeter for measuring the blood oxygenation level considering the carboxyhemoglobin concentration: principles of development, computer model and accuracy assessment
Authors: Sheikus Anton , Prasol Igor , Datsok Oleh
Published: April 2024

The main method for estimating the level of arterial blood oxygenation is pulse oximetry, which has the advantages of being fast, simple, reliable, and non-invasive. However, in well-known pulse oximeters, oxygen saturation is determined only by hemoglobin functional fractions, which reduces the device accuracy and is unacceptable in certain clinical cases. The known pulse oximeter improvement that considers the dysfunctional fraction concentration, especially carboxyhemoglobin, when measuring the level of blood oxygenation is an actual scientific and technical task. The research subjects. Mathematical, algorithmic, and technical support of a pulse oximeter that measures blood oxygenation levels considering the carboxyhemoglobin concentration. Objective. To expand the pulse oximeter functionality to consider the concentration of carboxyhemoglobin in arterial blood. Methods. Methods of computer simulation for developing a model and estimating the pulse oximeter accuracy that measures the blood oxygenation level considering the carboxyhemoglobin concentration. Results. The theoretical statements of measuring the level of blood oxygenation considering the carboxyhemoglobin concentration and the simplest pulse oximeter structural diagram for measuring are developed. An additional LED used in the pulse oximeter is proposed, and the wavelength choice is justified on the condition of maximizing the carboxyhemoglobin contribution to the optical density of the biological object. Computer models of a traditional pulse oximeter and a pulse oximeter with an additional LED were developed, simulation research was conducted using the developed models, and the device accuracy for measuring the level of blood oxygenation was estimated considering the carboxyhemoglobin concentration. Conclusions. Simulation studies based on the developed models show that the proposed pulse oximeter, compared with the known one, allows determining and estimating a decrease in blood oxygenation caused by the carboxyhemoglobin concentration increasing in the patient’s blood. Considering that light is also absorbed by the third derivative of hemoglobin, carboxyhemoglobin, increases the accuracy of the proposed pulse oximeter in measuring functional saturation.
Study on potential application of brightness temperature models in passive remote sensing
Authors: Nezhalskaya Kseniya , Volosyuk Valerii , Bilousov Kostiantyn , Kolesnikov Denys , Cherepnin Glib
Published: April 2024

In the modern science and practice of remote sensing of any surface, including various types of land cover, radio systems are widely used. Due to low energy consumption and high stealth, the most promising direction of technical tools for remote sensing is the development of passive remote sensing systems. To estimate the specific parameters of the surface, information on the relation between the signals of the thermal radiation and these parameters is needed. Therefore, it is relevant to study and analyze the existing types of such relations that connect the brightness temperature and the parameters of the Earth’s surfaces; this is the subject matter of the study in this paper. The goal of this study is to analyze existing relation models and study the conditions of their application in terms of operating frequencies, geometric characteristics, type of surface coverage (with vegetation, without vegetation, etc.), as well as the method of obtaining mathematical relations (electrodynamic models or empirical models). Due to the large number of different types of earth surface coverings and different types of surface models, in order to simplify remote sensing tasks for passive systems, as well as to improve the results of modeling or experiments, the following tasks are formulated: to study and classify existing models of the relation between surface parameters and brightness temperature, and to calculate and analyze the potential accuracy of estimating surface parameters by passive remote sensing systems. The following results were obtained: the impact of the atmosphere on the surface’s brightness temperature, described by the electrodynamic flat model, for the operating frequencies 75–110 GHz of the radiometer was analyzed. The impact of the atmosphere on the brightness temperature appears at sighting angles greater than 50° at horizontal polarization and greater than 80° at vertical polarization. According to the results, it can be said that the estimation accuracy of the imaginary part of the complex permittivity decreases with an operating wavelength decrease, and the estimation accuracy of the real part is the opposite. Conclusions. The results of simulation modeling show that for radiometers with the above-mentioned operating frequencies, it is possible to estimate the real permittivity or only the real component separately in the case of describing the surface with a complex permittivity parameter. It is recommended that the study be conducted at vertical and horizontal polarizations, without and with the impact of the atmosphere. To estimate the surface conductivity (the imaginary part of the complex permittivity of a surface), systems with lower operating frequencies are required. Thus, this study presents an analysis of existing models, calculates the potential accuracy of parameters estimation when using these models, and provides recommendations for practical experiments or modeling.
Multi-criteria model for selection of optical linear terminals based on FUZZY TOPSIS method
Authors: Pidchenko Sergiy , Kucheruk Oksana , Drach Іlona , Pyvovar Oleh
Published: April 2024

Optical networks are an integral part of modern telecommunication systems. Huge traffic and ever-increasing requirements for data transmission capacity and quality encourage the wider use of modern optical technologies in telecommunications. The rational choice of equipment for the design of optical networks is an urgent task at present. The subject of this study is the process of selecting optical line terminals, which is associated with the evaluation of possible options by a set of indicators. The OLT (optical line terminal) in PON technology implements the function of organizing subscriber lines and is also a node equipment - an L4 switch that combines the functions of routing (IP), traffic fragmentation (VLAN), switching (MAC), quality of service (QoS), and some necessary network service functions. The optimal structuring of PON access networks demands a judicious selection of software and hardware, guided by their tactical and technical characteristics, in view of the substantial information load they entail. One of the effective approaches to solving such problems is the use of MCDM (Multiple Criteria Decision Making) methods. Purpose: to construct a TOPSIS model of the optimal choice of optical linear terminals in the conditions of unclear information for different cases of aggregation of evaluations of decision makers. Task: to formalize the process of selecting optical linear terminals; develop a multi-criteria mathematical model for the effective selection of optical line terminals. Methods used in the study: The fuzzy TOPSIS method, four methods of aggregating the opinions of decision makers. The following results were obtained. Alternatives and criteria for their evaluation are defined. On the basis of interviews with decision makers, evaluations of the degree of importance of the criteria and alternatives to the criteria were determined. Linguistic changes were used to describe decision-makers’ evaluations, which were interpreted as triangular fuzzy numbers. During this study, four methods of aggregating the evaluations of decision makers were used. A fuzzy TOPSIS model for selecting an optical line terminal is constructed. The ranking of the selected optical line terminals is obtained and the best alternative is determined. The results of modeling with different methods of aggregating assessments of decision makers are compared. Conclusions. The use of the Fuzzy TOPSIS method for optimal selection of optical linear terminals is proposed. The influence of the methods of aggregation of evaluations of decision-makers is analyzed.
Study of methods for searching and localizing objects in images from aircraft using convolutional neural networks
Authors: Tsekhmystro Rostyslav , Rubel Oleksii , Lukin Vladimir
Published: April 2024

The use of unmanned and manned aerial vehicles for remote object localization and classification is very common. These methods are used in various systems, ranging from territory surveys to law enforcement. Methods of object localization and classification using neural networks require a detailed study and research of the quality of their work on data that has certain specifics, such as vehicle detection. The use of neural networks to detect certain types of objects using images obtained from aircraft can also help in the study of hard-to-reach locations. Therefore, the main subject of this paper is the localization and classification of objects in images obtained using digital cameras mounted on aircraft. The main focus is on determining the accuracy of object localization and detection using selected types of neural networks, which are the most important indicators of neural network efficiency. The speed of a neural network is also an equally important characteristic as it directly affects its ability to be used in tasks that require fast object localization, such as video surveillance or automated car control systems. The main goal of this study is to study the accuracy of object localization and classification in images obtained with the help of cameras mounted on aircraft, as well as to study the speed of neural networks and determine the effectiveness of their application in real-world conditions. The objectives of this study are to train YOLO v5, SSD, and Faster RCNNs on the VisDrone dataset and to further study them on the vehicle localization dataset. The main goal of this work is to obtain statistics on the performance of neural networks trained on the VisDrone dataset. On the basis of the obtained statistics, conclusions are drawn about the effectiveness of the considered neural networks. The conclusions are drawn by considering the speed of the model, localization (IoU), and classification (Precision, Recall) metrics. Possible directions for further development of the topic under study are presented as conclusions.
Multi-computer malware detection systems with metamorphic functionality
Authors: Kashtalian Antonina , Lysenko Sergii , Savenko Oleg , Nicheporuk Andrii , Sochor Tomáš , Avsiyevych Volodymyr
Published: April 2024

The need to develop new systems for detecting and counteracting malware remains relevant. In addition to malware detection methods, the need to develop new systems for detecting and counteracting malware has become increasingly important. The use of various detection systems and the formation of a variable architecture in them significantly improves the effectiveness of detection, since both for attackers in computer attacks and for malware, understanding the system is significantly complicated. In addition, such systems may contain baits, traps, and, accordingly, modifiable operating environments to deceptively execute programs for research. This paper develops a conceptual model of multicomputer systems, which is designed to ensure the functioning of antivirus bait and traps to detect malware and computer attacks in corporate networks. The proposed approach is intended to prevent and counteract metamorphic virus penetration. This paper presents the conceptual model of multicomputer systems and introduces a defining characteristic responsible for the control of decisions and other defining characteristics of the system. Methods for detecting metamorphic viruses with the possibility of their implementation in the architecture of multi-computer systems with bait and traps are developed so that the system directly joins the detection procedure through its components and decides on the presence of metamorphic code in the executable file. An implementation of a multi-computer malware detection system with metamorphic functionality was developed to prove the feasibility of the proposed conceptual architecture model and the developed methods for detecting metamorphic viruses. An experiment on the functioning of a multi-computer malware detection system was set up, and experimental studies were conducted. The conducted experiments included metamorphic virus detection. In addition, an experiment on the effectiveness of detecting the metamorphic code of viruses was conducted. The efficiency of detecting metamorphic virus code using the developed multi-computer system was also investigated, and the presence of improved detection was established. The directions of further work are to extend the results of this work to new types of malware.
Comparative effectiveness of different methods of using the analogue of gonadotropin-releasing hormone for ovulation stimulation in rabbit does
Authors: Koshevoy V. I. , Zhukova I. O. , Naumenko S. V. , Savichev O. A.
Published: April 2024

Modern reproductive technologies require artificial insemination (AI) protocols that are safe for the health of animals and do not violate their welfare. Stress factors arising in the reproduction process of industrial rabbit breeding negatively affect the sexual function and reproductive performance of rabbits and their offspring. In recent years, researchers have focused on alternative methods of ovulation stimulation, including intravaginal introduction of hormonal means of its induction. Therefore, the aim of our study was a comparative evaluation of the effectiveness of the intramuscular method of administration of the gonadotropin-releasing control (GnRH) analogue and its addition to the sperm dose for AI on Hyplus rabbit (n = 30), which were randomly divided into three groups. For this, buserelin acetate was administered intramuscularly at a dose of 1 μg per rabbit immediately after artificial insemination (control group). Experimental animals were inseminated with sperm doses with the addition of a GnRH analogue in the amount of 25 μg (experimental group 1) and 15 μg (experimental group 2). The influence of the method of administration of GnRH analogue on reproductive function was evaluated by indicators of the effectiveness of AI, fertility, and the dynamics of the progesterone level during pregnancy. A decrease in fecundity was observed in females; for example, in experimental group 1, the effectiveness of AI in terms of the number of rabbits was 64.3 %; in animals of experimental group 2 – 41.2 %, and the number of inseminations in this group of rabbits was 41.7% higher compared to control data. The fertility of rabbits of all groups was high, reaching the maximum value in the control group (10.42 ± 0.52 heads/female). Fertility according to live newborns in experimental group 1 was the highest among all groups of rabbits and was 9.67 ± 0.49 heads/female, which showed an increasing trend compared to the control. Also, in the animals of experimental group 1, an increase in the level of progesterone in blood serum was observed (on the 7th day of pregnancy by 13.2 %, on the 14th day by 14.3 %, on the 21st day by 16.4 %). In contrast, in experimental group 2, a significant decrease in the progesterone level was noted. Thus, 25 μg of GnRH analogue added to the extender is optimal. It is worth noting that there were no advantages of intravaginal administration over intramuscular administration in terms of reproductive performance. However, the number of live births and progesterone levels were improved.
Physicochemical characterization of four varieties of prickly pear (Opuntia spp.)
Authors: Delgado Alvarado Adriana
Published: April 2024

Objective: To characterize the physicochemical properties of the pulp from four varieties of prickly pear collected in three localities from the municipality of Salinas, San Luis Potosí.
Design/Methodology/Approach: The following characteristics were recorded in 15 fruits of each variety: fruit size (equatorial and polar diameter), fresh biomass of total fruit, peel, and locule. Nine fruits per replicate were used (one fruit equals one replicate) to analyze moisture, ash content, total soluble solids, pH, titratable acidity, and total soluble sugars.
Results: The physical differences of the fruits, total fresh weight, and equatorial and polar diameter match the typical characteristics of each variety. The largest fruits were (in descending order): Cristalina, Fafayuca, Naranjona, and Cardona. The highest moisture percentage (87.34%) was reported in Cristalina. Varieties such as Fafayuca from La Reforma and Naranjona from Salinas de Hidalgo had the highest and lowest concentration of total soluble sugars (25.84 and 11.46 g 100 g-1 FW, respectively). The fruits had a titratable acidity from 0.01 to 0.03% citric acid, while total soluble solids ranged from 11.60 to 15.84 °Brix.
Study Limitations/Implications: Harvesting was based on the visual parameters established by the farmers.
Findings/Conclusions: Fruits harvested from backyard orchards (<500 m2) had fruits of greater weight, which are  used for self-consumption. The amount of total soluble solids and total soluble sugars per variety was different between localities, indicating that farmers from different localities have different harvesting criteria.
“The Hardships he labours under... in that severe Climate:” Environment, Seasonality, and British Military Operations in Northern Temperate North America 1756–1814
Authors: Spinney Erin
Published: April 2024

This paper examines the unique challenges of practicing medicine by British Army and Royal Navy medical practitioners in the cold climates of colonial British North America during the eighteenth and early nineteenth centuries. I consider how army and naval medical practitioners characterised the northern temperate climate and how these perceptions influenced medical practice. Additionally, the paper illustrates the interactions between seasonality, supply and transportation difficulties, and the logistics of using local resources of wood and coal for fuel in army and naval hospitals. 
Optimal hedging efficiency in global freight markets: Comparing FFAs and time charter strategies
Authors: Tsatsaronis Michael
Published: April 2024

The paper aims to mitigate financial risk in highly volatile shipping freight markets by employing a dynamic hedging model. The primary criterion for evaluating the effectiveness of various methods for estimating optimal hedge ratios through Forward Freight Agreements (FFAs) is the minimum variance hedging rule. Four different methods are utilized to estimate two types of hedge ratios. The first type, a static hedge ratio, is calculated using the OLS and ECM methods. The second type, a time-varying hedge ratio, is determined through a bivariate GARCH model and a Rolling Window OLS method. Additionally, the hedging effectiveness of the traditional method of hedging, time chartering, is compared to the more modern and sophisticated shipping derivatives methods using the coefficient of variation.
Highlights

Estimating optimal hedge ratios through Forward Freight Agreements (FFAs) with the minimum variance hedging rule
Four different methods are utilized to estimate two types of hedge ratios for static and dynamic hedging
Assess the hedging effectiveness of the different methods of hedge ration estimation
Compare the hedging effectiveness of the traditional method of hedging, time chartering, to the more modern and sophisticated shipping derivatives methods using the coefficient of variation
Representation of Women in Sexual Violence News on Kompas.com : Sara Mills' Perspective
Authors: Midle Line Krismonsari  , Prihadi
Published: April 2024

The aim of this research is to describe the subject-object position of women in the sexual violence news kompas.com using Sara Mills' perspective. The subjects of this research are journalists and the objects of this research are women. Women who experience sexual violence are positioned as victims without resistance. This research data was taken from kompas.com using Sara Mills' critical discourse analysis. The research results in news text 1 show that the woman or victim is in the object position. The victim experienced an act of rape by her stepfather. The second news story shows the victim in the position of the object. The victim was still in elementary school and was molested by an old man. Victims not only experience harassment but are also threatened to keep quiet and given money to cover up the perpetrator's behavior. The third news shows women in the position of objects and as victims.