Human Computer Interaction (HCI), a growing research field in science and engineering, aims to provide a natural way for humans to use computers as tools. Humans prefer to interact with each other mainly through speech, but also through facial expressions and gestures, for certain parts of the speech and displays of emotions. The identity, age, gender, and emotional state of a person can be obtained from his face. The impression we receive from the expression reflected on the face affects our interpretation of the spoken word and even our attitude towards the speaker himself. Although emotion recognition is an easy task for humans, it still proves to be a difficult task for computers to recognize user`s emotional state. Advances in this area promise to arm our technological environment by means for more effective interactions with humans, and hopefully the impact of facial expressions on cognition will increase rapidly in the future. Will do. In recent years, the adoption of digital has increased rapidly, and the quality has improved significantly. Digital printing has resulted in fast delivery and needs-based costs. This article describes a sophisticated combination classifier approach, an empirical study of ensembles, stacking, and voting. These three approaches were tested on Nave Bayes (NB), Kernel Naive Bayes (kNB), Neural Network (NN), Auto MultiLayer Perceptron (Auto MLP), and Decision Tree (DT), respectively. The main contribution of this paper is the improvement of the classification accuracy of facial expression recognition tasks. In both persondependent and nonpersondependent experiments we showed that using a combination of these classifier combinations gave significantly better results than using individual classifiers. It has been observed from experiments that the overall voting technique by voting achieves the best classification accuracy.

Power conservation is a vibrant area of research on wireless sensor networks. Several research papers have shown that using mobile sync in the sensor field, which collects data from sensor nodes via single or multi-hop communication, can save significant energy. However, sinks move slowly, which increases sensor network delays, especially in delay-sensitive applications. To address this issue, various rendezvous-based techniques are described in which a subset of sensor nodes are selected from the field as rendezvous points (RPs). The remaining nodes transfer the captured data to the next RP, where the data is buffered. The RP is then used to build a path for the mobile sink to tour and collect the buffered data. This article describes various rendezvous-based techniques and analyzes their strengths and weaknesses in terms of energy savings.

We reanalyze the effect of silver (Ag2+) and copper (Cu2+) coating solutions for the thickness of the layer on aluminum (Al) materials with increased electrical currents 0.4A, 0.8A, 1A, 1.2A, and 1.4A and increased thickness layer (10µm, 20µm, 30µm, 40µm, and 50µm), as well as the previous study was conducted. We used the electroplating method and thickness test, as well as the Brinell hardness test for both coating solutions. The results show statistically significant (p-value < 0.05, one-tailed) between high electric current and aluminum (Al) coating process with silver (Ag2+) and copper (Cu2+), as well as silver (Ag2+), get the faster coating process time. The Brinell hardness test shows a statistically significant difference (p-value < 0.05, one-tailed) between the high thickness layer and HB value (Ag-coated and Cu-coated).

Electroplating was the process of coating metal surfaces using the electrochemical method. We used alkaline zinc (Zn2+) plating that was anti-corrosion coating, cheapest, evenly adhesion, as well as better-looking crushing. This study aims to test and measure the thickness of the layer on spark plugs with variations in different electrical currents 300, 400, and 500A and increased hours during the coating process, investigate the corrosion resistance of white rust on the surface and analyze the changes in alkaline zinc concentration and temperature that affect the thickness of the layer, respectively. The results, such as 1st sample 13 pcs, 300A, and thickness of 7.26-micron with white rust 9 pcs. 2nd sample 13 pcs, 400A, and thickness of 9.15-micron white rust 5 pcs. 3rd sample 13 pcs, 500A, and thickness of 12.75-micron white rust 3 pcs. The high electric current (500A) and 45 hours of the experiment would influence the lowest white rust corrosion level. The high alkaline zinc solution with an optimum 36°C solution temperature and 500A electric current would undoubtedly deposit the white rust until 3 pcs.

This study examines the relationship between requirements and framework development in Customer Engagement (CE). In this paper it is developed based on engagement theory with the assumption that satisfying relationships will be able to create emotional relationships so that colleagues will be involved and bound to each other. Based on theoretical studies, this paper proposes a framework that examines the components that exist in CE, antecedents. involved and the consequences of CE. To complete the study, we also discuss how the type of industry, company characteristics - Business to Business vs Business to Consumer - and value and level of involvement affect the satisfaction relationship, both direct and indirect contributions from the point of view of emotional involvement in Customer Engagement. Next, examine the development of Customer Engagement and how to maximize company performance by making appropriate strategic changes. The findings of this paper are the relationship between emotions and the indirect contribution of customers’ needs to be improved to the company's service industry with the B2B concept for products/services with a high level of involvement; Furthermore, it is also necessary to improve services for products or services with a high level of brand value and companies that provide a higher level of satisfaction.

Peer-to-peer systems nowadays are widely used because of the scalability and high reliability. File replication and consistency maintenance are widely used techniques to achieve high system performance. These techniques are connected to each other. The connection of these techniques is consistency maintenance is needed in file replication to keep the consistency between a file and the replicas. Traditional file replication and consistency maintenance methods need a high cost. The usage of IRM (Integrated file Replication and Consistency Maintenance inP2P systems) which will achieve high efficiency at a significantly lower cost can be used to solve this problem. IRM reduces redundant file replicas, consistency maintenance overhead, and unnecessary file updates.

Ibn Asyur was the second originator who made the concept of Maqashid Syariah into all scientific disciplines after Al Syathabi, in line with the journey of maqashid Syariah to become a field of knowledge. Sharia banking is also the second concept after the presence of conventional banking, but that is not a thing that prevents Islamic banking from continuing to grow and develop to spread benefits. Ibnu Asyur in his thoughts conveyed the similarity between maqashid sharia and the main objective of establishing sharia banking. Maqashid sharia in the perspective of Ibn Asyur can produce indicators of growth and development of sharia banking to be very rapid and of course still useful for Muslims and humanity in general.

This article describes the implementation of sustainable financial policies by Islamic Banks and Conventional Banks in supporting environmentally sound business activities in their business activities to minimize environmental damage. The research method in this study is the normative juridical method, namely descriptive-analytical. This research concludes that after the publication of the sustainable finance policy, the business activities of financial service institutions are still in the stage of raising awareness of the financial system in providing financing. Then in its operations, it still calculates paper savings, construction of green buildings, and the amount of financing provided to the company. So that the business activities carried out still cause damage to the environment.

This article descriptively discusses the description of the dynamics of Islamic civilization and thought in the Middle Islamic period, namely the period of the three great empires. Each of the Islamic empires, both the Ottoman Turks, the Syafawi, and the Mughals, in their history have preserved many relics that show how dynamically developed Islamic civilization and thought. This article was written using a qualitative descriptive approach using the library study method. From the results of the discussion, it is known that Islamic civilization and thought during the three great empires were generally not as advanced as in the previous period, namely the Abbasid dynasty. However, there are various legacies and progress in other fields such as politics, economics, and art. This progress was mainly due to the factor of military strength. But the progress achieved did not last long due to various internal and external factors that befell these three great Islamic empires.
 

The research objective is to describe the students in Islamic boarding schools that have challenges and expectations. The research method is descriptive qualitative through a library study approach. Data collection techniques with documentation studies and data processing with reduction, data presentation, and conclusion. The results of the study: In Islamic boarding schools, there are challenges and hopes within them, among these challenges include (1). Patience is the main key in completing a pesantren activity. (2). The sense of sincerity of every santri must be sincere in carrying out every activity of the pesantren and be able to obey the rules without a heavy heart. (3). Complying with the rules Obeying the rules is an obligation of a student or santri.