bluuebunny/crossref_metadata_2025 huggingface dataset:
Collective Doings in Progress and the Attribution Problem
Authors: Supèr Tessa
Published: June 2024

We often encounter situations in which an undesirable outcome is brought about through a series or collection of seemingly inconsequential actions. This phenomenon, referred to as the inefficacy paradox, occurs both intrapersonally and collectively. Paradoxically, while we have good reason to avoid such patterns of action, there appears to be no compelling reason to abstain from any of the individual actions constituting such a pattern given its trivial impact. This paper scrutinizes Chrisoula Andreou's prominent endeavor to resolve the inefficacy paradox in both the intrapersonal and the collective context by utilizing their structural similarity. While her approach may prove successful in intrapersonal cases, the applicability of the proposed solution to collective cases is, I argue, ultimately limited. This is due to a fundamental dissimilarity between these two kinds of cases, which I lay out in the paper. This insight may also shed light on the transferability of other proposed solutions to the inefficacy paradox from the intrapersonal to the collective context.
The Problem of Collective Harm: A Threshold Solution
Authors: Hindriks Frank
Published: June 2024

Many harms are collective: they are due to several individual actions that are as such harmless. At least in some cases, it seems impermissible to contribute to such harms, even if individual agents do not make a difference. The Problem of Collective Harm is the challenge of explaining why. I argue that, if the action is to be permissible, the probability of making a difference to harm must be small enough. This in turn means that both the probability of harm and the probability of avoiding harm have to remain below the corresponding threshold probabilities. I compare this threshold probability account to proposals that revolve around difference-making, NESS causation and security dependence, and I argue that they fail for reasons of scope. For instance, a moral principle that invokes NESS causation prohibits so many actions that compliance with it would have a stifling effect on human life.
Between Worlds: Daniel Ellsberg (1931–2023)
Authors: Moscati Ivan , Zappia Carlo
Published: June 2024

Daniel Ellsberg was a multifaced personality who belonged to multiple worlds: academia, the military, and, in the second part of his life, political activism. This essay reviews Ellsberg’s analysis of decision-making under uncertainty, which has been highly influential in economics and reflects his diverse experiences.
Managing Temptation: Comments on Chrisoula Andreou’s ‘Micromanagement and Poor Self-Control’
Authors: Williamson Timothy Luke
Published: June 2024

In ‘Micromanagement and Poor Self-Control’, Chrisoula An-dreou argues that some cases of poor self-control are best understood as arising from poor self-management, in particular a kind of intrapersonal micromanagement. She argues that this furnishes us with a better understanding of those cases than the orthodox foreign force paradigm does (on which poor self-control amounts to diminished self-control). I argue that we cannot do without the foreign force paradigm to explain the cases that Andreou discusses. I suggest a both/and approach on which poor self-management and diminished self-control together explain poor self-control.
Analysis of Financial Literacy of Economics Teacher Prospectives in the 4.0 Era in Relation to Sustainable Human Resource Formation
Authors:   Universitas Lampung, Pujiati Pujiati , Nurdin Nurdin , Rahmawati Rahmawati
Published: June 2024

Financial literacy of prospective teachers in the 4.0 era plays an important role in relation to realizing sustainable human resources. This study aims to determine the influence between the financial literacy of prospective economics teachers in the 4.0 era on the formation of sustainable human resources. This study used quantitative methods. Data was collected by questionnaire dissemination techniques through google forms. The respondents in this study were 188 active student representatives from the classes of 2019, 2020, 2021, and 2022 in students of the economic education study program FKIP University of Lampung. The data were analyzed in a quantitative descriptive. The results of this study show that the financial literacy of prospective economics teachers in the 4.0 era is related to the formation of sustainable human resources. This is proven by a simple linear regression analysis with a significance value of 0.000 < 0.05 which means that the financial literacy of prospective economics teachers in the 4.0 era has a significant effect on sustainable human resource development with an influence of 71.1% and 28.9% influence by other factors that were not studied in this study. Research recommendations should be that higher education institutions can massively foster integrated financial literacy in learning and provide contextual experiences such as the practice of investing through the capital market, saving, and using several financial applications related to financial transactions in everyday life.
The Influence of Managerial Ownership, Company Growth and Profitability on Dividend Policy in LQ45 Companies 2019-2021
Authors:   Universitas Lampung, Magdalena Napitupulu Maria , Hasnawati Sri , Kufepaksi Mahatma
Published: June 2024

Dividend policy is a decision about how much of current earnings will be paid out as dividends rather than retained earnings which will then be reinvested in the company. dividend policy can be measured through the dividend payout ratio (DPR). The ratio shows the percentage of the company's earnings that are paid out to shareholders in cash. Companies that have a high DPR and increase from year to year can provide positive signals to investors, because dividend announcements can be used as information by shareholders regarding company performance. This study aims to determine the effect of managerial ownership, company growth, profitability on dividend policy in LQ45 companies 2019-2021. This research is quantitative research. The data used is also secondary data taken from the official website of the Indonesia Stock Exchange in the form of financial reports of LQ45 companies listed on the IDX. Based on the results of data analysis and discussion of the effect of Managerial Ownership, Company Growth, and Profitability on Dividend Policy in LQ45 companies 2019 - 2021, it can be concluded. The managerial ownership variable has no effect on dividend policy as proxied by the dividend payout ratio. The company growth variable affects the dividend policy proxied by the dividend payout ratio. This indicates that any increase or decrease in total assets during the observation period affects the dividend to be distributed to shareholders. The profitability variable has no effect on dividend policy proxied by the dividend payout ratio.
The Influence of Managerial Ownership, Company Growth and Profitability on Dividend Policy in LQ45 Companies 2019-2021
Authors: Magdalena Napitupulu Maria , Hasnawati Sri , Kufepaksi Mahatma
Published: June 2024

Dividend policy is a decision about how much of current earnings will be paid out as dividends rather than retained earnings which will then be reinvested in the company. dividend policy can be measured through the dividend payout ratio (DPR). The ratio shows the percentage of the company's earnings that are paid out to shareholders in cash. Companies that have a high DPR and increase from year to year can provide positive signals to investors, because dividend announcements can be used as information by shareholders regarding company performance. This study aims to determine the effect of managerial ownership, company growth, profitability on dividend policy in LQ45 companies 2019-2021. This research is quantitative research. The data used is also secondary data taken from the official website of the Indonesia Stock Exchange in the form of financial reports of LQ45 companies listed on the IDX. Based on the results of data analysis and discussion of the effect of Managerial Ownership, Company Growth, and Profitability on Dividend Policy in LQ45 companies 2019 - 2021, it can be concluded. The managerial ownership variable has no effect on dividend policy as proxied by the dividend payout ratio. The company growth variable affects the dividend policy proxied by the dividend payout ratio. This indicates that any increase or decrease in total assets during the observation period affects the dividend to be distributed to shareholders. The profitability variable has no effect on dividend policy proxied by the dividend payout ratio.
Empowering Local Businesses: Evaluating Strategies and Proposing Solutions for Sustainable Growth of Micro, Small, and Medium Enterprises (MSMEs) in Cibeuruem Village
Authors:   University of Education Indonesia, Tafsir Maulana Hasan , Sudiapermana Elih , Sulistiono Eko
Published: June 2024

MSMEs are an important sector to advance the economy in Indonesia, MSMEs in Cibeureum Village have great potential to be developed, totaling around 173 MSMEs, many development efforts have been made. However, these efforts have not made much positive contribution. The purpose of this article is to analyze what is happening with the efforts that have been made and provide alternative solutions in answering the problem. existing. Using a qualitative approach, data collection using secondary and primary data. Data collection techniques using interviews, observation and documentation. Then to analyze the data that has been obtained using an interactive model, namely data collection, data reduction, data presentation and conclusion drawing. The results of this study state that efforts to develop MSMEs through training are not in accordance with training procedures, have not applied the principles of empowerment and lack of collaboration with all elements of the pentahelix. As for bridging all elements of the pentahelix, it is necessary to have an assistance team called Sahabat UMKM as an alternative solution to be able to carry out and succeed development efforts in the future. So that this research can be used to improve MSME development programs and can be a consideration for all parties who will carry out programs according to procedures. In the future, it is expected to further adjust Sahabat UMKM by optimizing the available human resources so that the application of the pentahelix elements is better.
Identification of the Values of Economic Education Lampung Tribe
Authors:   Universitas Lampung, Dianti Putri Rahmah , Rahmawati Rahmawati , Rufaidah Erlina , Komang Winatha I , Nurdin Nurdin
Published: June 2024

The purpose of this study was to determine the general picture of the values of Family Economic Education Lampung tribe and the general pattern of the meaning of Economic Education that is applied to children within the scope of the family Lampung tribe. this study uses a qualitative design using an ethnographic approach, researchers are trying to get into the conceptual world of the subjects studied, namely the Lampung tribal family. Data collection techniques include in-depth interviews and documentation. Based on the results obtained findings 1) Piil pesinggiri regarded as self-esteem owned by the lampung tribe, Piil pesenggiri interpreted as a view of life or life guidelines Lampung tribe, 2) in managing family income, Lampung tribe family provides tanggngjawab against an isti who has full control in managing finances, 3) the implementation of Economic Education, the habit of saving from childhood, the introduction of money from an early age, the habit of saving and frugal command from parents, there is a habit to always behave based on the norms of the application of Piil Pesenggiri.
The Impact of Mergers and Acquisitions on Shareholders' Welfare
Authors: Belmiro Susanto Jeffrey , Madeleine Tirtamurti Lim , Reynard Dave , Linawati Nanik
Published: June 2024

The objective of this research is to analyse mergers and acquisitions (M&A) in Indonesia the period 2017 - 2021. This study examines the determinants of abnormal returns of acquirer companies which consist of: Return on Assets, return on equity, Total Asset turnover, Fixed asset turnover, and Gross Profit Margin. This research examines 42 merger and acquisition events during 2017 - 2021. The research data was processed using multiple regression. The results of the research reveals that 5 factors that were used including return on assets, return on equity, total asset turnover, fixed asset turnover, and gross profit margin did not significantly affect the abnormal return of the acquisition company.
Analisis Potensi Sumber Daya Air Daerah Aliran Sungai (DAS) untuk Kebutuhan Irigasi Padi dan Palawija di Kecamatan Pesisir Tengah Kabupaten Pesisir Barat
Authors: Kurniadi Riko , Ridwan Ridwan , Amin Muhammad , Asmara Sandi
Published: June 2024

The purpose of this study was to determine the potential of water resources in the Way Ngison Kiri irrigation area which has an area of 44.47 ha of rice fields for irrigation water needs for rice and peanut crops so that the optimal planting area is obtained with the right cropping pattern and distribution of irrigation water. The data used in the analysis of water resource potential for watersheds (DAS) for irrigation water needs include irrigation water needs for rice and groundnut crops, mainstay discharge, crop water requirements or consumptive use, and land water balance from the results of the SWAT simulation (Soil and Water Assessment Tool). The use of ArcGIS SWAT analysis as a geographic information system that makes it easier to manage and perform data analysis. Based on the results of the analysis that the maximum value of irrigation water requirements in the first planting season (MT I) was 1.03 m3/s occurred on the last 15 days of January, in the second planting season (MT II) 1.1 m3/s occurred on 15 the last day of May, while the third planting period (MT III) was 1.08 m3/sec which occurred on the 15th day of early June. Overall, in the first to third planting season, the mainstay discharge value is fulfilled, because the mainstay discharge value is greater than the value of water demand. Based on the adequacy of irrigation water, the optimal planting area for rice and secondary crops is 11 ha and the recommended method of irrigation water distribution is by group method. Keywords: Irrigation water needs, Mainstay discharge, SWAT, Watershed
Pengaruh Suhu dan Tekanan terhadap Hasil Penggorengan Keripik Pisang Muli (Musa acuminata) Model Semprong Menggunakan Vacuum Frying
Authors: Asmara Sandi , Oktafri Oktafri , Kuncoro Sapto , Sari Selvi Yunita
Published: June 2024

Fruit chips are healthy snacks because of their high fiber content. Processing of Muli banana chips with vacuum frying is an appropriate method to increase the shelf life of bananas by processing them into fruit chips. Utilization of Muli bananas with the semprong model as a processed product for chips is an effort to increase the diversification of Muli banana products and effort the selling value of the Muli banana products themselves. Vacuum frying is a frying process that can maintain nutritional value. The research method used experimental design in the form of a factorial Completely Randomized Design (CRD). Experimental factors in this study used two temperature factors (T), namely temperature 80°C, 85°C, 90°C, and pressure (P) during the frying process namely -68 cmHg, -70 cmHg and -72 cmHg, with 3 repetition. The parameters observed in this study were of material shrinkage (yield), moisture content, organoleptic test, and storage (estimation of material shelf life). The conclusion the quality of the Semprong model Muli banana chips with a temperature of 85°C and a frying pressure of -72 cmHg in this study produced good quality Muli banana chips. Muli banana chips of the semprong model with a temperature of 85°C and a frying pressure of -72 cmHg in this study had a material yield value of 30.3%, a moisture content of 3.94% and a crispness test score of 4.67 (crunchy), aroma of 3.93 (rather strong banana aroma), color 3.87 (brownish yellow), taste 4.73 (sweet). Keywords : Chips, Muli Banana, Vacuum Frying.
Uji Kinerja alat Pengering Hybrid Tipe Rak pada Pengeringan Jahe Merah (Zinger Officiniale Roscoe)
Authors: Wahyi Hasan Hafidzul , Warji Warji , Tamrin Tamrin , Kuncoro Sapto
Published: June 2024

Red ginger plants are abundant and easy for the public to obtain. Red ginger is a plant that has long been consumed by Indonesian people, and since the end of the 20th century it has often been used in food and health drink formulas. In an effort to improve the quality of consumption, it is best to pay attention to the carrying capacity of tools and machines for processing ginger from spices to dry chip s to the process of flouring ginger flour. This research was carried out with three treatments with three repetitions, including drying with a tool using electrical energy, drying with a tool using energy electricity and sun (hybrid), drying using tools using solar energy and drying using a winch (as a control). Based on tests carried out, the length of time for drying with a tool using solar energy takes 14 hours, for drying with a tool using electric and solar energy (hybrid) it takes 8 hours, and for drying with a tool using solar energy it takes 12 O'clock. The drying rate for drying red ginger with electrical energy was 4.70 kgH2O/hour, drying with electrical and solar energy (hybrid) was 4.72 kgH2O/hour, and drying with solar energy and was 4.99 kgH2O/hour. Keywords: red ginger, drying, hybrid, flour.
Studi Analisis Kelayakan Ekonomi Mesin Perajang Gedebog Pisang Dengan Variasi Jumlah Pekerja
Authors: Asmara Sandi , Novita Dwi Dian , Suharyatun Siti , Abdilah Rois
Published: June 2024

Banana stem waste can be used as raw material for animal feed by reducing the size so that it is easy to consume. The Banana Stem Chopper Machine type TEP-2 can be used to chop banana stems into pieces measuring 2-5 cm. In this research, machine testing was carried out with treatment of 1, 2 and 3 workers, then chopping analysis, break even point analysis and feasibility analysis were carried out. This research aims to determine the economic feasibility of the Banana Stem Chopper Machine type TEP-2 with how many workers will gain maximum profit. The analysis results show that chopping with 1, 2 and 3 workers is suitable for economic purposes. The best performance occurred in chopping with 3 workers which resulted in a work capacity of 1382.74 kg/hour, basic chopping costs of IDR 260.84/kg and a break-even point of 10,002.60 kg/year. Productive working hours are 6 hours per day and the price for chopped banana stems is IDR 500/kg, the potential profit is IDR 309,531,548.00/year.Keywords : Banana stem waste, chopping machine, economic analysis, feasibility analysis
Desain dan Analisis Kinerja Air Blower Kipas Sentrifugal untuk Pengendalian Gulma
Authors: Pramuhadi Gatot , Ayu Zavira Mega , Sidik Ahmad Jaelani
Published: June 2024

This study aims to design and analyze the performance of the centrifugal fan water for weed control and compare it with the performance of air blowers that use axial fans. This study consists of three stages, namely design and manufacturing, testing in the laboratory, as well as testing for controlling dry land weeds in the field. There are 6 treatments tested, namely a combination of two types of fans (axial and centrifugal) and three types of cone nosel (4 holes, 5 holes, and 6 holes). The results showed that the centrifugal fan air blower displays good performance according to functional design and structural design.  Centrifugal fan blower performance is more effective than axial fan air blower because centrifugal fan blower is able to produce smaller (smoother) droplet diameters and larger droplet density (more tight) so that it has a greater herbiciding ability than axial fan air blower water .  Centrifugal fan blower can produce a droplet diameter of 94 microns to 118 microns more fine than axial fan of 246 microns to 299 microns.  The centrifugal fan blower can produce a larger droplet density (tight) of 369 droplets/cm2 to 538 droplets/cm2 compared to the axial fan of 74 droplets/cm2 to 117 droplets/cm2.  The centrifugal fan blower water produces a spraying discharge of 1.22 liters/minute to 1.41 liters/minute is smaller than the axial fan of 2.33 liters/minute to 2.93 liters/minute.  The ability of centrifugal fan herbiciding is 76.21% to 78.02% greater than axial fan of 76.36% to 77.41%. Keywords: Air Blower, Axial Fan, Centrifugal Fan, Herbiciding, Weeds
Usulan peningkatan kualitas produk briket arang kelapa
Authors: Hadisantono Hadisantono , Hanandaka Theodorus B. , Dewa Parama Kartika , Emiton Joseph Juan
Published: June 2024

CV Jumbuh merupakan sebuah usaha mikro kecil dan menengah (UMKM) yang memproduksi briket arang dari tempurung kelapa yang terletak di Klaten, Jawa Tengah. Permasalahan utama yang akan diselesaikan pada penelitian ini adalah permasalahan jumlah produk cacat yang mencapai 15% per bulan. Pengurangan produk cacat merupakan upaya perusahaan memenuhi persyaratan buyers dari beberapa negara di Timur Tengah dan Eropa sebagai negara tujuan ekspor utama. Penelitian ini bertujuan untuk menurunkan persentase jumlah produk cacat bulanan menjadi di bawah 10% per bulan dengan beberapa usulan solusi perbaikan. Penelitian ini menggunakan metode Statistical Process Control (SPC). Penelitian ini berhasil mengidentifikasi jenis cacat yang paling sering terjadi, yaitu cacat retak (43,6%), cacat kadar air (40,4%), dan cacat abu (15,9%). Berdasarkan hasil brainstorming dengan stakeholder maka solusi yang paling sesuai untuk diimplementasikan adalah pembuatan Standard Operational Procedure (SOP) untuk setiap urutan proses produksi. SOP ini dilengkapi dengan check sheet pengecekan kualitas dan checklist pengecekan mesin. Implementasi solusi yang dilakukan menghasilkan penurunan persentase cacat menjadi 6% per bulan.
Strategi pemasaran untuk meningkatkan penjualan rol film lokal di Tomo Film
Authors: Christo Rafael Pandu , Hadisantono Hadisantono , Halim Lenny
Published: June 2024

Tomo Film adalah sebuah badan usaha di Yogyakarta yang menjual segala jenis keperluan untuk dunia fotografi analog, khususnya rol film. Pengadaan rol film di Tomo Film, terdiri dari 2 sumber, yaitu dari luar negeri (impor) dan dari dalam negeri (lokal). Sumber utama penjualan adalah rol film impor. Namun, untuk mendatangkan rol film impor untuk memenuhi kebutuhan konsumen, hanya bisa dilakukan pada kuartal 1 dan kuartal 3 saja. Hal tersebut menyebabkan penjualan pada masing-masing kuartal tiap tahunnya berfluktuasi atau tidak stabil. Tujuan dari penelitian ini adalah memperbaiki strategi pemasaran untuk meningkatkan penjualan rol film lokal. Dengan menggunakan analisis Product Life Cycle diketahui bahwa perusahaan ini berada di tahap decline. Selanjutnya, dengan metode Analytical Hierarchy Process didapatkan prioritas solusi. Berdasarkan kuesioner yang disebarkan kepada 100 responden anggota Komunitas Kamera Analog Yogyakarta, strategi pemasaran yang terpilih adalah pop-up store dengan stok rol film lokal yang berlebih. Dari implementasi berupa pop-up store yang dilaksanakan selama 2 hari, didapatkan hasil penjualan meningkat sebanyak 39 rol film lokal dengan persentase kenaikan pendapatan sebesar 32,42%. Implementasi pop-up store secara berkala dapat menjadi rencana jangka panjang untuk menstabilkan pendapatan Tomo Film.
Peningkatan efisiensi lintasan produksi dengan metode line balancing Kilbridge & Wester
Authors: Nazareth Juan Rafael , Dewi Ratna Mustika
Published: June 2024

Dalam industri manufaktur, efisiensi lini produksi merupakan faktor penting untuk memaksimalkan output dan mengurangi penundaan. Salah satu metode yang digunakan untuk mencapai tujuan ini adalah line balancing. Penelitian ini bertujuan untuk memaksimalkan output dan mengurangi balance delay pada sebuah perusahaan elektronik karena perusahaan mengalami beberapa penundaan yaitu conveyor produksi berhenti akibat penumpukan di salah satu proses. Metode Kilbridge & Wester digunakan untuk menganalisis dan menyeimbangkan lini produksi dengan menggabungkan beberapa operasi menjadi satu stasiun kerja, sehingga waktu operasi di setiap stasiun kerja lebih seimbang. Hasil penelitian menunjukkan peningkatan signifikan pada efisiensi lini produksi. Hasil dari line balancing menunjukkan line efficiency meningkat dari 65,76% menjadi 84,55%, dan smoothest index menurun dari 7,33 menjadi 2,77. Penggabungan beberapa operasi menjadi satu stasiun kerja membuat beban lebih seimbang dalam hal waktu operasi. Proses analisis line balancing yang telah dilakukan menunjukkan peningkatan output dan pengurangan waktu produksi, tetapi masih memerlukan tahap uji coba lanjutan untuk menghitung jumlah operator optimum di setiap stasiun kerja.
Preperation and Performance Comparision of Autoclaved Aerated Concrete by Using Ceramic and Glass Wastes Instead of Silica
Authors: Kızılkaya Nilgün , Eren Sarıcı Didem
Published: June 2024

This study aimed to produce autoclaved aerated concrete (AAC) by using glass and ceramic waste in 10%, 20%, 30%, 40%, and 50% proportions as a substitute material for quartzite, and samples were produced under low pressure and heat (2.3 bar and 135 ºC). The microstructural properties were investigated by employing scanning electron microscopy (SEM) analysis. Unit weight, porosity, water absorption, ultrasonic wave velocity, compressive strength, and thermal conductivity parameters were experimentally investigated and compared to a control sample produced without waste. Test results showed that waste addition leads to decreasing porosity, water absorption, and increasing unit weight. Additionally, uniaxial compressive strength, thermal conductivity, and ultrasonic wave velocity values were increased by adding waste. The test results showed that glass and ceramic waste can be used as a quartzite sand replacement in the production of AAC and the optimum replacement proportions for the waste materials was 10%.
PSO ile Optimize Edilen Bulanık Mantık Kontrolörü ile LabVIEW Platformunda DA Motor Kontrolü
Authors: Güler Hasan , Çelik Hakan
Published: June 2024

DA motor geçmişte olduğu gibi günümüzde de sürücü sistemlerde yaygın bir şekilde kullanılmaktadır. DA motorlu sistemlerde kullanılan kontrolörün performansı sistemin başarısı açısından büyük önem arz etmektedir. Bu nedenle bu çalışmada DA motor kontrol performansını arttırmak için kontrolör olarak, üyelik fonksiyonları Parçacık Sürü Optimizasyonu (PSO) ile optimize edilen Bulanık Mantık Kontrolörü (BMK) kullanılmıştır. Önerilen kontrolör performansını incelemek için DA motor geleneksel PID kontrolör ile de kontrol edilmiş ve elde edilen sonuçlar karşılaştırma amacıyla kullanılmıştır. PID kontrolörün parametreleri ve BMK’nın üyelik fonksiyonları PSO ile eşit şartlarda optimize edilmiştir. Çalışma son zamanlarda kontrol sistemlerinde sıkça kullanılmaya başlanan ve geniş donanım uyumluluğuna sahip olan LabVIEW platformunda gerçekleştirilmiştir. Elde edilen benzetim sonuçları incelendiğinde, özellikle değişken hız ve moment durumlarında PSO optimizasyonlu BMK’nın daha iyi performans gösterdiğini görülmüştür.
Kümeleme algoritmalarının hiyerarşik bölücü kümeleme yönteminde çok sınıflı sınıflandırma performansına etkisi: bir analiz
Authors: Alagoz Celal
Published: June 2024

Çok sınıflı sınıflandırma problemini hiyerarşik biçime dönüştürerek performans gelişimi elde etmek araştırılan bir konudur. Böylesi bir dönüşümü otomatik olarak gerçekleştirmede kritik bir bileşen, hiyerarşi oluşturma sürecidir. Bu çalışma, standard kümeleme algoritmaları olan K-Medoids, K-Means ve Gaussian Karışım Modelleri’in bir hiyerarşi inşa etme tekniği olan Hiyerarşik Bölücü Kümeleme yönteminde bölücü işlevinde kullanılmasıyla otomatik olarak elde edilen hiyerarşilerin çok sınıflı veri setlerinin sınıflandırma performansına etkisini incelemektedir. İki farklı performans metriği olan F1 skoru ve doğruluk skoru kullanılarak yapılan analizler, K-Means ve GMM'nin K-Med'e göre genellikle daha etkili olduğunu göstermektedir. Ancak, performans iyileştirmesi ve öğrenme verimi, sınıf sayısına ve veri setinin özelliklerine bağlı olarak değişmektedir. Hiyerarşik biçime dönüştürmenin sınıflandırma performansına önemli ölçüde etkisi olduğu ve farklı veri setlerinin farklı tepkiler verdiği bulunmuştur. Çalışmanın kısıtları ve gelecek araştırma yönleri de tartışılmıştır. Bu çalışma, kümeleme algoritmalarının hiyerarşik bölücü kümeleme yöntemindeki rolünü ve gelecekteki araştırmalara potansiyel yönleri anlamak için önemli bir katkı sağlamaktadır.
Çarpışma sonrası oluşan yitim etkili manto kökenli alkalen lavlar: Elazığ volkanitleri
Authors: Kürüm Sevcan , Aydemir Safiye , Sar Abdullah , Yıldırım İsmail
Published: June 2024

Bu çalışmada, Elazığ yakın çevresinde üç farklı bölgede bulunan volkanik kayaçların jeokimyasal ve Sr-Nd izotop verilerine dayalı olarak deneştirilmeleri yapılmıştır. Bölgedeki volkanizma, esas olarak bazaltik lav akıntıları ile daha az yayılımlı bazik cüruf konileri ve piroklastik kayaçlardan oluşmuştur. Kuvaterner yaşlı bu bazaltik lavların jeokimyasal verileri, kayaçların silise doymamış alkali ve yüksek K’lu özellikte; potasik trakibazalt, hawaiit ve bazanit bileşiminde olduğunu gösterir. Volkanitlerin ana ve iz elementlerinin SiO2 ile değişimleri ve element içerikleri, genelde birbirleriyle uyumlu olarak bulunur. Benzer dağılım kondrit ve ilksel mantoya göre normalize edilmiş çoklu element değişim diyagramlarında da görülmektedir. Örneklerde büyük iyon litofil elementlerin zenginleşmesine karşın yüksek alan kuvvetine sahip elementlerin tükenmesi, düşük 87Sr/86Sr(i) (0.7034988-0.7039231) ve yüksek 143Nd/144Nd(i) (0.512829-0.512884) izotop içerikleri ve pozitif ɛNd (3.76-4.84) değerleri ile jeokimyasal verilerin değerlendirilmesi sonucunda, bu volkanitlerin tüketilmiş mantodan türemiş, kalınlaşan kıtasal kabuğa bağlı kirlenmeyle beraber yitime bağlı olarak yitim ergiyiklerinin neden olduğu metasomatizmadan da etkilendiğini göstermektedir.
3U ve 12U küp uyduların fırlatma ve uzay koşullarındaki yapısal davranışlarının incelenmesi
Authors: Özdemir Ahmet , Altınsoy Şakir , Beköz Üllen Nuray , Dirikolu M. Hüsnü
Published: June 2024

Günümüzde uzay ortamındaki çalışmalara yönelik bilimsel araştırmalarda, işlevsellik ve maliyet açısından uygun olan çeşitli uydular ve bileşenleri geliştirilmektedir. Bunlar arasında Küp uydular düşük olan fırlatma maliyetleri nedeniyle araştırma ve geliştirme projelerinde yoğun ilgi görmektedir. Uyduyu fırlatma sırasında oluşabilecek hataları önlemek için küp uyduların tasarımları ve testleri sürekli gelişim halindedir. Bu çalışmada, 3U ve 12U tipi küp uyduları ve fırlatma kutusunun (P-POD) en kritik alt sistemlerinin tasarımları SOLIDWORKS 3D programı kullanılarak yapılmıştır. Hafiflik, üretilebilirlik ve göreceli rijitlik gibi özellikleri nedeniyle uydu üretiminde Al 6061-T1 (Al-Mg-Si) alaşımı tercih edilmiştir. Söz konusu Küp uydular için şasi yapısı, alt sistemleri, dağıtım mekanizmaları ve fırlatma kutusu için katı modellemeler ayrı ayrı oluşturulmuş ve sonradan tüm parçalar montajlanarak nihai küp uydu model tasarımları tamamlanmıştır. Daha sonra bu tasarımlar esas alınarak, Dünya yüzeyindeki ve uzay ortamındaki statik ve titreşim analizleri ANSYS 2022 R1 Sonlu Eleman programıyla incelenmiştir. Son olarak uyduların fırlatma ve uzay koşullarında ortaya çıkan yapısal davranış farklılıkları karşılaştırılmıştır.
Geleneksel Makine Öğrenmesi Yöntemleri Ve Metasezgisel Yöntemlerle Öznitelik Seçim Yöntemlerinin Karşılaştırılması
Authors: Açar İsmail , Aydilek İbrahim Berkan
Published: June 2024

Öznitelik seçim yöntemleri, makine öğrenmesi için çok önemli bir yere sahiptir. Veri kümesinin boyutu arttıkça makine öğrenmesi modelinin performansı düşmektedir. Öznitelik seçim yöntemi aynı zamanda bir optimizasyon süreci olarak düşünülebilmektedir. Gürültülü olan ya da model için alakasız olan öznitelikler elenince başarı artabilmektedir. Bu çalışma kapsamında UCI veri deposundan 3 farklı veri kümesi kullanılmış ve 5 farklı makine öğrenmesi algoritması kullanılarak 10 katlı çapraz doğrulama yöntemiyle algoritmaların başarımları ve çalışma süreleri ölçülmüştür. Öznitelik seçim yöntemi olarak geleneksel makine öğrenmesi ile öznitelik seçim yöntemleri ve meta sezgisel algoritmalar kullanılarak öznitelik seçim işlemleri gerçekleştirilmiştir. Kullanılan öznitelik seçim yöntemleri şu şekildedir; Korelasyon Analizi, Lasso, Hipotez testi ve metasezgisel algoritmalardan Genetik Algoritma ve Parçacık Sürü Optimizasyon Algoritması yöntemleri kullanılmıştır. Yapılan deneyler sonucunda öznitelik seçim yöntemlerinin uygulanması ile birlikte başarımın arttığı görülmektedir. Metasezgisel algoritmalarla yapılan öznitelik seçiminin başarım ve çalışma süresi bakımından daha uygun olduğu gözlemlenmiştir.
Treatment of Vegetable Oil Industry Wastewaters with Coagulation-flocculation Methods
Authors: Turna Talip , Yıldız Yalçın
Published: June 2024

This study was conducted to investigate potential use of environment-friendly treatment technologies in treatment of vegetable oil industry wastewaters containing various pollutants at high concentrations and compounds resistant to biodegradation. Within the scope of the study, coagulation-flocculation processes were experimented. Various configurations were tried to achieve optimum removal efficiencies. In coagulation-flocculation experiments with Al2(SO4)3.18H2O coagulant, the highest COD (92%) and Oil-Grease (89%) removal efficiencies were achieved at 800 mg Al+3/L coagulant dose. In experiments with FeCl3.6H2O coagulant, the highest COD (88%) and Oil-Grease (89%) removal efficiencies were achieved at 600 mg Fe+3/L coagulant dose.
Cretaceous Limestone Dolomitization and Argument of Its Mg2+ Sources: Exampling the Bekhme and Qamchuqa Formations in the Zagros Collision Belt
Authors: Karim Kamal Haji , Mohamad Sherzad Tofiq
Published: June 2024

This study unveils new considerations regarding the dolomitization of the Bekhme and Qamchuqa formations (BQFs), two reefal Cretaceous units in the Iraqi Zagros collisional belt. Previous studies proposed the dolomitization of these formations due to the ascent of Mg-rich hydrothermal solutions through deep faults but lacked substantial supporting evidence. This paper present new considerations suggesting that the dolomitization of the BQFs resulted from the Cretaceous environmental conditions and basin paleogeographic setting of the platform on which these formations were deposited. To justify this consideration, seven proofs presented. First is the occurrence of dolomite as vast layers extending tens of kilometers laterally and bounded between limestone beds, which resemble a strata-bound occurrence. Second is the absence of vertical selective dolomitization such as, hydrothermal mineralization, vertical dolomite dykes, hydrothermal vents, tubes, or zones. Third is the barrenness of most of the fault surfaces and their surrounding rocks with selective dolomitization. Fourth is the sharp boundary between the dolomite and limestone layers, indicating a sudden environmental change from lagoon to reef or forereef. Fifth is the record of dolomitization in the sediments reworked by bioturbation, evident in thalassinoides burrows. Sixth is the succession of BQFs underlain by limestone and green marl devoid of dolomitization and hydrothermal upward movement. Seventh is the contradictory notion of hydrothermal dolomitization among the most recent study published in the Science journal which atributed dolomitization to normal temperate on earth surface. In the present study, the source of the Mg is argued and its presence is attributed to the warmth of the Arabian platform (plate) near the equator during the Cretaceous period. Another source is the connection of the Arabian platform with the Neo-Tethys Sea, which was the locus of Mg-rich mafic volcanism in the form of arcs and mid-oceanic ridge topography, which supplied a voluminous amount of Mg to the Arabian carbonate platform through ocean currents.
Microbial and Inflammatory Salivary Biomarkers of Periodontal Diseases
Authors: Sha Aram Mohammed , Abdulbaqi Hayder Raad , Bin Qasim Syed Saad
Published: June 2024

Recent data reveals that severe periodontal diseases affect approximately 19% of global adult populations, impacting more than 1 billion individuals universally, ranking it as the sixth most predominant human disease. Diagnosis and treatment plans for periodontal disease entirely depend solely on the assessment of traditional clinical parameters. However, these parameters are not sensitive and are subject to error. Hence, microbial and inflammatory biomarkers of periodontal diseases in saliva have attracted of interest. This review aims to evaluate the salivary components as potential diagnostic tools for periodontal diseases. In addition to periodontal pathogens, interest in salivary biomarkers of periodontal disease is increasing, and a number of biomarkers have the potential to be accurate indicators of disease and the effectiveness of therapy. The most up to date studies examining the microbial and inflammatory biomarkers with both diagnostic and prognostic values in saliva were reviewed for the purpose of this study.  It is apparent that saliva has many advantages over other oral fluids such gingival crevicular fluid and mouth rinse as a tool for diagnosis of periodontal disease. Biomarkers can identify and quantify periodontal risk through objective measures. Further, the combination of biomarkers seems to enhance the diagnostic and prognostic value of the biomarkers. Amongst the microbial biomarkers of Porphyromonas gingivalis, Aggregatibacter actinomycetemcomitans and Tannerella forsythia are widely used with some promising results. Whereas, the inflammatory salivary biomarkers of IL-1β and MMP-8 are widely used for diagnosing periodontitis and predicting the future treatment outcome.
The Effect of the Simulation Method on Creative Thinking Ability and Basic Teaching Ability of Islamic Religious Education Students
Authors: Hamzah Hamzah , Nur’aini Nur’aini
Published: June 2024

This study aims to determine the effect of the simulation method on the ability to think creatively and the basic teaching skills of students majoring in Islamic Religious Education (PAI) at the Ibnu Sina High School-Batam. The approach used in this research is quantitative, using quasi-experimental techniques. The research design used is the pretest and posttest design. The sample used in the study was students majoring in PAI, totaling 23 people who took the Learning Methods and Strategies course. Data collection is done by testing techniques. The test is used to measure students' creative thinking skills and basic teaching abilities. Data were analyzed using the N-gain and correlation test and F test, in this case, it was done with the help of SPSS 16 software. Based on the data and analysis results and statistical tests (N-gain test) it can be concluded that the simulation method has an effect on the ability to think creatively by 56 % and the basic ability to teach students majoring in Islamic Religious Education (PAI) at the Ibnu Sina High School-Batam is 79%. Based on the F test, these results are in the very convincing category. Therefore it can be said that the simulation method can be used as an alternative to developing students' creative thinking skills while improving their basic teaching skills.
Internalization of Islamic Education Values in the Pancasila Student Profile Strengthening Project through a Multidisciplinary Approach
Authors: Uroidli Ali , Faizin Moh. , Aziz Yahya , Yudi Usman
Published: June 2024

This research aims to explore the internalization of Islamic values in the Pancasila Student Profile Strengthening Project at SMA Negeri 1 Gedangan, Sidoarjo Regency. The focus of the research was the eleventh-grade odd-semester students using a case study approach. The research method used was descriptive qualitative. The data collecting techniques employed were observation and interviews with various informants, such as the principal, curriculum representative, project assistant teacher, and Islamic religious education teacher. The researchers conducted data analysis using the Miles and Huberman analysis method to reduce data, present data, and draw conclusions. The results showed the importance of the integration of Islamic values in student character education at SMA Negeri 1 Gedangan, making a significant contribution to understanding Islamic education strategies to strengthen Pancasila values at the senior high school level.
Developing Teaching Material Used Project-based Learning to Improve Student's Research Skills
Authors: Sutiyono Agus , Apriliana Evita Nur , Putri Alfi Rahmania , Chantarosombat Chalard
Published: June 2024

This research is intended to develop teaching materials for learning theories courses and test the feasibility of the learning materials products. This research seeks to uncover problems and challenges in learning theories courses from the perspective of lecturers and students. The subjects of this study are students and lecturers of the master program in Islamic Religious Education, Faculty of Tarbiyah and Teacher Training, Universitas Islam Negeri Walisongo Semarang. This research applies a 4D development model to develop teaching materials, which includes four stages: defining, design, development, and dissemination. Researchers use questionnaires and focus group discussions involving lecturers and students. The result of the development in this study is teaching materials of project-based learning teaching materials for learning theories courses. Based on expert validation tests, material experts, curriculum experts, and media design experts declare that teaching materials for project-based learning theories courses are feasible with a scoring average of 81,79%. After being applied to the learning theories course, out of 60 students, 75.17% strongly agreed, 22.17% agreed, and 2.67% disagreed that the teaching materials using Project-Based Learning improved student research skills and helped students more easily understand the course. From the lecturer's point of view, using Project Based Learning (PjBL) in learning theory courses can allow students to learn actively, collaborate with classmates, and develop better research skills. Therefore, implementing PjBL in learning theory courses can effectively improve the quality of learning and student understanding.
The Effectiveness of Timeline Story Poster on Learning Outcames in Islamic Historical Lesson
Authors: Luthfana Hana Aisyatul , Muhtadi Ali , Azizah Nurul , Nurahmah Riska Hanan , Salim Khairunnisa Binti Mohd
Published: June 2024

Islamic historical lessons are often considered boring and uninteresting. This is known by the existence of a significant point of difference between the average score obtained and the minimum average level of achievement. The average score in the Islamic History subject for Class 3 Intensive 2021 students is 2.62, while the minimum score is 4.9. From this data, it was found that only 1% of students reached the minimum limit. Therefore, this research was carried out with the research method used was quantitative experimental type. The population was all Intensive Class 3 students and the sample selection technique was simple random sampling, which took 70 students from Intensive Class 3 B to Intensive Class 3 H, half of whom were students for the control class and 35 students for the experimental class. The analysis uses the normality test, reliability test, and Mann Whitney test. This study shares new findings, namely forms of application and obstacles in understanding Islamic history lessons. In this research it can also be seen that students' understanding and learning outcomes are very minimal. This research recommends the use of Timeline Story Poster-based learning media to improve learning of Islamic history education. Teachers need to develop innovative learning media strategies, while students must actively participate in the learning process and apply their experiences. With the timeline story poster, students can realize their desire to study Islamic history easily and happily. Meanwhile, teachers can use the results of this research as a reference in applying educational methods in the learning process.
Learning Management to Stimulate Critical Thinking in Islamic Religious Education Study Program Students
Authors: Romlah Listiyani Siti , Wahid Latiful , Sukma Hendri Setiabudi , Pahrudin Agus
Published: June 2024

This research is motivated by the impact of learning management carried out by lecturers on students to think critically. because critical thinking is very necessary in everyday life. Critical thinking is a way for students to have an attitude of deeply about various things and problems that are different within their scope, which attitude involves activities in solving problems, making decisions, analyzing assumptions and organizing strategies and tactics. By having critical thinking skills, students can understand how to face, analyze and solve problems in facing challenges in the era of industrial revolution.Critical thinking learning management for students is effective in improving students' abilities in mastering concepts and subject matter as well as helping students' abilities in analyzing, interpreting and evaluating and being able to convey logical and systematic data presentations. Critical thinking learning management for students supports students' ability to know their own abilities, can interpret problems critically, strengthens students in searching for new information that was not previously known, in focusing a research, the researcher provides the formulation and objectives of the problem that will be reviewed in this research, namely: what lecturers do in the Islamic religious education study program to improve the critical thinking of students in the Islamic religious education study program. This research is included in descriptive qualitative research, with a qualitative approach. The results of the research show that lecturers in the Islamic religious education study program carry out 3 strategies in improving the critical thinking of students in the Islamic religious education study program: First, develop students' critical thinking skills in the aspect of identifying using methods, models and learning approaches. The methods used are lecture, discussion, question and answer, group assignment, project, collaborative, and inquiry methods by carrying out activities where students provide information to fellow students by explaining verbally and also through presentations from students. Second, the strategy for developing students' critical thinking skills in the analytical aspect is that students are presented with scientific problems and encouraged to analyze the material, then conclude and develop aspects of evaluating the problem, either cross-checking or checking the results of the conclusions. And third, the lecturer's strategy in developing students' critical thinking skills in the Islamic religious education study program in the aspect of evaluating problems.