This research aims to find out how effective and efficient correspondence management is after the use of online-based electronic information and communication technology (paperless office system) in processing incoming letters. Utilization of information technology in correspondence management is management of an agency's correspondence system by utilizing information technology in the form of computer media, the internet or other media using either manual or electronic systems. The main discussion in this research is how effective the delivery of incoming mail services is with an electronic system and the obstacles faced in implementing these two systems in mail management. The research results show that the application of information technology in correspondence management is able to speed up the administration process, reduce human error, and increase data accessibility and security. However, several obstacles such as limited skilled human resources and inadequate technological infrastructure are still challenges. Recommendations are provided to overcome these obstacles, including training for staff and improving technological infrastructure. Thus, it is hoped that the use of information technology in correspondence management can continue to be improved to support a more modern school administration and efficient.

This study aims to apply the C4.5 algorithm in classifying athlete performance based on the 2023 award recipient list. The C4.5 algorithm was chosen for its ability to construct decision trees that can identify patterns and characteristics distinguishing high-performing athletes. The data used in this study includes various attributes such as gender, age, sport, number of medals, and level of competition participation. The results show that the C4.5 algorithm can classify athletes with high accuracy. The resulting decision tree provides valuable insights into the key factors contributing to athlete performance. The implementation of this algorithm is expected to assist sports organizations in more effectively identifying and developing potential talents.
 
 

Hemoglobin (Hb) is an erythrocyte tetrameric protein that binds to non-protein molecules, namely the iron porphyrin compound called heme. Hb is one of the laboratory tests on pregnant women which can support the diagnosis or occurrence of complications in pregnant women, these complications can be detected through danger signs of pregnancy. Danger signs of pregnancy are signs that indicate dangers that can occur during pregnancy (antenatal), which if not detected can cause death. The aim of this community service is to facilitate Hb checks and to increase knowledge of pregnant women through education about the danger signs of pregnancy. The method of this activity is carried out by checking hemoglobin levels using the Sahli method and providing counseling using the discussion method to pregnant women about the danger signs of pregnancy and using the KIA book as the medium. This counseling was carried out at the Batursari Village Posyandu which was attended by 10 pregnant women. The results of the counseling showed that 8 pregnant women had normal Hb, 1 pregnant woman was in the mild anemia category, and 1 pregnant woman was in the severe anemia category. and after education regarding the danger signs of pregnancy, all pregnant women have good knowledge.

The development of quantum computing presents new challenges to the security of data stored and processed by today's computer systems. Quantum computers have the ability to perform calculations at very high speeds, which could threaten the security of currently used encryption algorithms. Therefore, steps are needed to design and implement an operating system that is able to protect data from quantum computing threats. Ubuntu Linux version 22.04, as one of the leading open source Linux distributions, offers high-level security features. To face the era of quantum computing, it is necessary to carry out special development and implementation of this operating system. This research aims to improve the security of the Ubuntu Linux operating system version 22.04 so that it can withstand quantum computing attacks by designing and implementing a quantum-resistant cryptography protocol and testing the security and performance of the resulting system. This research method uses a qualitative approach and research and development (R&D) with literature studies. The research results show that the integration between Liboqs and OpenSSL on Linux Ubuntu 22.04 successfully implements a cryptographic algorithm that is resistant to quantum computing. Although there is a slight performance increase due to the additional overhead of the quantum algorithm, the security of the system in protecting data from quantum computing attacks is proven to be well maintained.
 
 

The use of information technology in education has become common, including in universities such as STMIK Kaputama Binjai. The Academic Information System (AIS) is an important component in college operations, assisting in the management of student data, lecturers, grades, and other academic information. However, it is important to conduct an AIS IT governance audit to evaluate the effectiveness and efficiency of the system. In this context, the audit was conducted using the COBIT 5 framework, focusing on the MEA (Monitor, Evaluate & Access) domain. The results of this audit provide recommendations to improve maturity levels in various COBIT 5 domains, such as improving the responsiveness of IT support services and setting clear KPIs for system performance evaluation. Thus, this audit is expected to be the basis for improving AIS IT governance at STMIK Kaputama Binjai in order to support the teaching and learning process more effectively and efficiently.

The policy of shutting down TikTok Shop has sparked both pros and cons. On one side, it eliminates jobs for content creators whose income relies on TikTok Shop, while on the other side, it saves UMKM  from predatory pricing wars that harm them. Utilizing the Naive Bayes algorithm, a classification method capable of predicting the likelihood of a class and making decisions based on learning data, the Emotion Recognition research on YouTube comments related to the closure of TikTok Shop is conducted. Data will be classified into five classes: happy, angry, sad, afraid, and surprised. The objective of this research is to find the best emotional model using the Naive Bayes method. The results of user testing with Naive Bayes and Tf-Idf show that the precision values for sad, happy, afraid, and surprised emotions are high, while for anger, the percentage is 59%. The percentages for afraid, happy, sad, and surprised emotions are 91%, 87%, 84%, and 79%, respectively. The overall accuracy is 82%.

This research is quantitative research. The purpose of this research is to determine the significant influence of the SQ3R method on students' Reading Comprehension Ability. The research design used in this research is Quasi Experimental Design. The sample used in this research used a non-probability sampling technique with a sample size of 40 students. This research data collection uses observation and tests. The results of this research indicate that the SQ3R method influences the reading comprehension ability of class V students at SD Negeri 1 Made Lamongan. Based on the calculation of the hypothesis test with the results of the t-test of 2 paired samples (Paired Samples), a significance value of 0.046 was obtained. Based on the test criteria if the Sig. (2-tailed) <0.05, the significance value is 0.046 <0.05, then H0 is rejected and Ha is accepted, which means that there is an influence of the SQ3R method on students' reading comprehension skills. The implementation of learning using the SQ3R method is carried out with very good criteria. an average of 95%.

This research aims to determine the influence of the physical work environment, work discipline and work stress on employee performance at the UD Bunga Mas brown sugar factory. The variables used in this research are Physical Work Environment (X1), Work Discipline (X2), Work Stress (X3), and Employee Performance (Y). The research location is the UD Bunga Mas Brown Sugar Factory which is located in Karanglo Hamlet, Tales Village RT 01 RW 04 Ngadiluwih District, Kediri Regency. By using data collection techniques in the form of interviews, questionnaires and observations.Meanwhile, the analysis used uses quantitative methods with multiple linear regression tools using the SPSS version 25.0 software program.
Based on tests carried out by partial linear regression analysis, it shows that the Physical Work Environment (X1) has a negative and insignificant effect on Employee Performance (Y) and Work Discipline (X2) has a positive and insignificant effect on Employee Performance (Y). Meanwhile, the Job Stress variable (X3) has a negative and significant influence on Employee Performance (Y). This shows a significant value for variable X1 0.116 > 0.05, variable X2 0.538 > 0.05, and X3 0.000 < 0.05. Partially, the Physical Work Environment (X1), Work Discipline (X2), and Work Stress (X3) have a positive and significant effect on Employee Performance (Y) at the UD Bunga Mas Brown Sugar Factory.

This study aims to prove and analyze the effect of quality of work life, compensation, and work motivation on organizational citizenship behavior in KSP Maju Bersama Jaya Magelang employees. The research was conducted quantitatively, with the sample analyzed being 14 employees. This research method is carried out in stages starting from the introduction to the processing of data that the author and the preparation of research reports have obtained. The study's results prove that quality of work life, compensation, and work motivation do not partially or simultaneously affect organizational citizenship behavior. Other results show that the magnitude of the influence of quality of work life, compensation, and work motivation on organization citizenship behavior on organization citizenship behavior is 39.0%.

This study aims to determine the effect of work motivation, work stres, and work environment on organizational citizenship behaviour at PT. Sari Murni Jaya.The population used is the production employees of PT. Sari Murni Jaya, amounting to 60 people, and in this study 60 people were sampled. The sampling technique used in this study was simple saturated sampling. Data collection was carried out by distributing questionnaires. To test the hypothesis, multiple linear regression analysis tools are used, multiple correlation coefficient (R), multiple determination coefficient (R2), classical assumption test, F test and t test with the help of SPSS statistic 25.0, as well as validity and reliability tests. The results of the validity and reliability tests showed that all items of the questionnaire were declared valid and reliable because the rcount value was greater than the rtable value.The results of this study prove that work motivation influences organizational citizenship behavior (OCB),work stres also influences organizational citizenship behavior (OCB), work environment influences organizational citizenship behavior (OCB), In addition, work motivation, work stres and work environment simultaneously influence on  organizational citizenship behavior (OCB).