Facial recognition, a branch of image processing, is widely used in attendance systems to improve efficiency and security. This study develops an employee attendance monitoring system that integrates facial recognition using the Eigenface algorithm in OpenCV. The system records each individual's facial data alongside a password, enabling automated attendance tracking. Testing results indicate that with a database of 10 facial entries, the system achieved 100% accuracy in recognizing individuals. However, as the database expanded beyond 10 entries, accuracy declined to 80%, influenced by factors such as lighting variations, differences in facial structures, and increased data volume. This study employed a Research and Development (R&D) methodology, with expert validation yielding a score of 3.4, categorizing the system as "Highly Valid." User testing with 11 participants resulted in an overall score of 36, classifying the system as "Very Good (Valid)." The findings highlight the potential of facial recognition in improving attendance management while minimizing fraudulent entries. Future research should focus on optimizing recognition accuracy in larger databases through refined preprocessing techniques, image quality adjustments, and deep learning models.

The rapid growth of digital services has intensified the energy demands of data centers, significantly impacting operational costs and global carbon footprints. This study leverages Machine Learning (ML) and Big Data to optimize energy management in data centers, addressing limitations in prior approaches that overlooked real-time variability. A predictive model utilizing the Random Forest algorithm was developed to reduce energy consumption based on dynamic factors, such as workload and environmental conditions like temperature. The research used a six-month dataset consisting of approximately 3 million data points from an operational data center. After preprocessing the data, the model achieved a high predictive accuracy, reflected by an R-squared value of 0.87. The findings demonstrate that the model reduces energy consumption by an average of 11.17% daily, with peak savings of up to 15.56% during off-peak hours. Key metrics, including a Mean Squared Error (MSE) of 0.034 and a Root Mean Squared Error (RMSE) of 0.184, validated the model's effectiveness and reliability. Statistical tests further confirmed its precision within a 95% confidence interval. This study contributes to the academic field by integrating real-time environmental data into predictive modeling, offering a scalable solution for energy-efficient data center operations. The outcomes support sustainability initiatives by mitigating carbon emissions and reducing operational costs. The findings also provide a framework for applying ML in broader industrial contexts requiring efficient energy management. Future research may explore incorporating additional variables, such as user behavior, to further refine predictive capabilities.

Pengukuran kinerja perusahaan sangat penting untuk untuk mengukur kinerja perusahaan di masa mendatang dan juga bisa digunakan untuk pengambilan keputusan yang tepat. PT Massindo Karya Prima Perusahaan yg bergerak dalam bidang manufacture atau produksi pembuatan kasur, divan, sandaran mulai dari awal sampai terbentuk barang jadi. Dengan sudah ditentukannya perspektif kemudian ditentukan baru ditentukan sasaran strategis dan setiap sasaran ditentukan Key Performance Indicator (KPI). Metode balanced scorecard memberikan kerangka komprehensif untuk menjabarkan visi ke dalam sasaran-sasaran strategi. Sasaran-sasaran strategi yang komprehensif dapat dirumuskan karena metode balanced scorecard menggunakan empat perspektif: keuangan, pelanggan, proses bisnis internal, serta pembelajaran dan pertumbuhan. Sistem informasi berbasis Web dengan metode balanced scorecard  kinerja pemasaran di PT Massindo Karya Prima berbasis website merupakan teknologi yang fleksibel dapat diakses seluruh jaringan internet. Penelitian ini akan menggunakan metode penelitian model Borg and Gall (1987) dari 10 langkah menjadi 6 langkah. Hasil penelitian uji validasi dilakukan oleh pakar sistem menunjukkan nilai 2,6 maka sistem dinyatakan valid dan validasi user 4,0 sistem layak dipakai dan sangat baik.

One of the most crucial elements in a company is Human Resources (HR). To ensure a conducive internal climate within the company, creating healthy competition among employees can be achieved by selecting the best candidates. The process of selecting the best employees at PT. Gumara Trans Jaya Boja relies on criteria-based data without accurate calculations. The purpose of this research is to provide a system that can make  decisions about high-performing employees using the TOPSIS method and to implement this method in determining the criteria for assessing high-performing employees to ensure accurate data for precise decision-making and optimal results. The system is built using the TOPSIS method (Technique for Order Preference by Similarity to Ideal Solution), with XAMPP as its server, PHP as the programming language, and MySQL as the database. The testing results of this decision support system were deemed valid, receiving a score of 3.7, or 'Good', from expert evaluators, and obtaining a score of 4.2, or 'Very Good', from users. In a comparative test, the newly designed system achieved an 84% level of system alignment with the assessment indicators, compared to the old system's 44% alignment. This research follows the 6-step R&D method.

Sport science adalah disiplin ilmu yang mempelajari penerapan dari prinsip-prinsip sains dan teknik-teknik untuk menigkatkan prestasi olahraga. Sport science dalam kesehatan sepakbola sangat penting karena memungkinkan tim sepakbola untuk meningkatkan kinerja pemain, mencegah cedera, dan mempercepat pemulihan pasca-cedera. VO2 max dalam sepakbola adalah kemampuan maksimal seorang pemain untuk menggunakan oksigen selama aktivitas fisik. VO2 max yang tinggi pada pemain sepakbola membantu meningkatkan daya tahan aerobik, memungkinkan mereka bertahan dalam situasi pertandingan yang sulit, seperti saat berlari jarak jauh atau berlari cepat dalam waktu lama, serta membantu meningkatkan pemulihan setelah aktivitas fisik yang intens.
 
Permasalahan yang di hadapi mitra pada saat kompetisi adalah kurangnya kebugaran fisik sehingga menurunkan kualitas permainan. Kondisi fisik yang prima sangat penting dalam olahraga sepakbola, mengingat olahraga ini merupakan salah satu cabang olahraga yang dinamis. Para pemain sepakbola diharuskan untuk berlari dalam jangka waktu yang lama selama pertandingan berlangsung, baik untuk mengejar bola, menggiring bola, maupun untuk mengoper bola dari lawan.. Pendataan VO2 max setiap pemain perlu dilakukan supaya terdapat terdapat standart kebugaran pemain. Pelatihan pendataan VO2 Max dengan mitra perlu dilakukan untuk mencapai hal tersebut. Penggunaan aplikasi kalkulator VO2 Max berbasis web dan diakses lewat web mobile android sangat membantu dalam pendataan.
 
Dengan menggunakan alat gelang berbentuk jam tangan maka dapat diketahui jumlah detak jantung dan lama waktu berlari dapat tercatat otomatis. Hal-hal tersebut kemudian dapat digunakan untuk dasar perhitungan nilai dari VO2 Max yang menyatakan volume O2 max dinyatakan dalam liter per menit atau mililiter/menit/kg berat badan. Sedangkan luaran yang yang diharapkan mitra terbantu dalam pendataan VO2 max pemain sepakbola untuk mengetahui tingkat kebugaran, buku panduan penggunaan aplikasi serta video tutorial. Pelaksanaan pengabdian ini juga akan di publikasikan Jurnal Nasional Ber ISSN.

In Bad Stock (BS) control at PT Sari Roti Semarang, it is crucial to reduce the company's significant losses. However, the selection of rejected and returned bread with poor quality is still prevalent. Based on production data and the amount of bad stock (a collection of returned bread from stores and rejected production), a decision support system for controlling bad stock using Fuzzy Tsukamoto is needed. In this decision support system, three variables are modeled: production, store returns, and production rejects. The production variable consists of two fuzzy sets: increase, remain the same, and decrease. The store returns variable consists of two fuzzy sets: decrease, remain the same, and increase. The production rejects variable consists of three fuzzy sets: few, normal, and many. The membership values are only two values, 0 and 1, while the membership values in the fuzzy sets are closed intervals [0,1]. By combining all these fuzzy sets, three fuzzy rules are obtained, which are then used in the inference stage. In the inference stage, the membership value of the antecedent (?) and the estimated amount of production (z) are found for each rule. The amount of rejected production (Z) is obtained by centered average defuzzification.
The research results based on expert validation testing indicate that the obtained values are in the range of 2.51-3.25, which is categorized as valid or good. Meanwhile, the validation testing from users indicates that the obtained value of 3.4 is in the range of 3.26-4.00, which is categorized as highly valid. The effectiveness testing of the system's performance results in an average value of 89.5%.

By looking at current technological developments that already use automatic sensors, the application of the concept to this system can be a solution for dealing with ornamental fish farming owners. In this research, a tool is made that can perform feeding, checking temperature, water turbidity, feed level, water level and water pump control, from this information will be sent to android by firebase automatically monitored and controlled anywhere via android. This tool is designed with ease of maintenance and is an extension of the existing tools. IoT technology is used to monitor online, based on Firebase and Nodemcu Esp8266. In this study, researchers used the research method of the Borg and Gall (1987) model from 10 steps to 6 steps. The results of this study were carried out by an expert validation test to get a value of 30 which means "Very Good (Valid)". While the effectiveness test by 10 users plus by experts and employee users get a total score of 35.16 which means the effectiveness test is classified as "Very Good (Valid)" it can be said that the new system is more effective than the old system.

In this modern era, the world of science and technology is growing rapidly. Along with this, the flow of information is also growing and the need for quality information is increasing. CV. ALKO Rent Car is an individual business engaged in services, especially transportation services.The previous rental process only used a borrowing system through advertisements in print media and only by word of mouth. This is of course a bit detrimental to the company, because if there are customers from outside the city who will use the car rental service, they cannot know the types of cars that will be used and the price of the car rental. By using a transaction system with web technology, it ishoped that the company can increase the number of customers and not only from the city of Semarang. In addition, the admin section will not experience difficulties when writing reports or customer data collection, because customer data collection can be done in an easier way by entering the customer member, the admin section will find out whether the customer has used the car rental service or not.With web technologies such as HTML, CSS, PHP and MySQL databases as well as utilizing the internet network, it is hoped that it can solve problems related to customer reach.This study uses the Borg and Gall (1987) model from 10 steps to 6 steps. The expert system validation test shows the final value of the calculation is 2.5, concluding that it is very feasible to use. User Validation on CV. ALKO Rent Car Semarang obtained a value of 3.0 stating that the system is feasible to use and good.

Kemajuan teknologi semakin pesat, berpengaruh pada perkembangan hardware komputer. Pemecahan masalah Troubleshooting Komputer dapat dilakukan dengan mengembangkan sistem pakar. Deengan menggunakan metode Certainty Factor, fakta yang diperoleh dari pengetahuan seorang ahli disimpan dalam suatu basis pengetahuan dengan bantuan mesin inferensi dan memori kerja, proses penarikan kesimpulan tentang jenis kerusakan pada komputer. Sistem pakar dibuat menggunakan metode Certainty Factor dengan bahasa pemrograman PHP dan database MySQL.Penelitian ini menggunakan metode penelitian model Borg and Gall (1987) dari 10 langkah menjadi 6 langkah. Hasil uji oleh pakar dengan nilai akhir 3,20 sistem dinyatakan valid. Uji User diperoleh nilai 3,5 menyatakan sistem sangat baik.

Information technology is not only expected to be a supporting device and facilitate the company's operational activities, but has become part of the strategy in maintaining employee performance. PT. Usaha Mandiri Exporttama is a company engaged in assembling and manufacturing gas stoves for export destinations with a total of ± 150 employees. Having problems in terms of: (1) Efficiency, (2) Data Accuracy, (3) Timeliness, (4) Data Search, (5) Data Calculation. Seeing the weaknesses in the company, researchers designed a web-based attendance and payroll information system using the PHP programming language and MySQL database. The Rfid Reader and Card/Tag
 
 
 
 
tools were selected to facilitate employee attendance in large numbers. The Information System will immediately record as soon as the card is attached to the Rfid Reader. In this study, researchers used the research method of the Borg and Gall (1987) model from 10 steps to 6 steps. The test results related to the design show the final value of the calculation is 3.0, then the system is declared valid. The validation test by system experts related to usage shows the final value of the calculation is 2.9, concluding that the system is very feasible to use. User Validation at PT. Usaha Mandiri Exporttama Semarang obtained the final value of the calculation is 3.5 stating that the system is feasible to use and very good. The performance test by 4 respondents of the old system and the new system with an average of 43.7% of the old work system, and 87.5% of the new work system showed that the new system was effective and efficient.