AbstrakSistem yang digunakan saat ini untuk mitigasi benca banjir adalah penjaga pintu mengecek ketinggian air pada meter air yang terpasang di bendungan. Ketika hujan turun sangat deras atau sebab lain yang mungkin berdampak banjir, petugas menyampaikan informasi menggunakan cara manual yaitu memukul kentongan untuk memberi peringatan kepada masyarakat sekitar untuk waspada karena ketinggian air berpotensi menimbulkan banjir. Artikel ini menyajikan hasil penelitian yang bertujuan untuk mitigasi bencana banjir dengan membangun sistem informasi monitoring dan peringatan dini bencana banjir menggunakan microcontroller Arduino berbasis Internet of Things. Sensor water level dipasang pada gerbang air sungai dihubungkan dengan perangkat Arduino Uno yang dilengkapi dengan SMS Gateway SIM900A. Sistem ini memantau ketinggian air tanpa lelah dan mengirimkan informasi kepada Tim SAR Desa Kedungjati dan Ketua RT di lingkungan sekitar gerbang air sungai ketika ketinggian air mendekati batas level atas bencana banjir. Teknologi IoT dalam penelitian ini digunakan untuk menyimpan data ketinggian air sungai dan menghidupkan sirine sebagai tanda peringatan bencana banjir ketika data yang diterima mencapai level awas banjir. Kata kunci: IoT; sistem peringatan dini; mitigasi bencana banjir; Arduino Abstract [Title: Flood Disaster Mitigation Using a Disaster Early Warning and Monitoring Information System with an IoT-BasedArduino Microcontroller] The current system for mitigating floods is the doorman checking the water level in the water meter installed at the dam. When it rains very hard or other causes that might affect the flood, the doorman conveys information using the manual way by hitting kentongan to alert the surrounding community because the water level has the potential to cause flooding. This article presents the research aimed at flood disaster mitigation by building a monitoring and flood disaster early warning information system using an Internet of Things based Arduino microcontroller. A water level sensor installed at the river water gate is connected to an Arduino Uno device equipped with an SMS Gateway SIM900A. This system monitors the water level and sends information to the Kedungjati SAR Team and Ketua RT of the surrounding community around the river water gate when the water level approaches the upper limit of the flood disaster. IoT technology in this study is used to store river water level data and turn on the siren as flood warning signs when the data received reaches the flood alert level.

At this time, the Covid-19 pandemic has not been finished so all activities and expenditure of funds must be economical. On the each building will be required electricity resources as a means for lighting the room. Reduced activities carried out outside the room make people carry out activities indoors, this results in a significant increase in electricity consumption for lighting. PT. PLN as the provider in Indonesia of electricity services for the community experiences a shortage of electricity resources and most of the electricity resources are used for lighting purposes. Indonesia as a developing country has a very large of population growth, so it requires many buildings as a place to live or a place of business and other activities. This paper will be discussion how a smartphone with an Android operating system can be used to determining the lighting requirements using the Ionic Framework and Rule Based Expert Systems. Using this application system, so electricity to lighting can be optimal and not too wasteful, which in turn can save on the use of electrical energy resources and can save of the cost.

The administrative financial data processing management system at SMP N 17 Semarang is carried out by students coming directly to pay to the Administration, because the use of 1 existing computer facility in the Principal's room and 3 computer facilities in the Administration room makes payment data recorded in a book. big. The data used in SMP N 17 Semarang still uses manual recording or bookkeeping, which can result in errors in recording payments with the same student's name, data easily lost or torn. The Grounded Research method is expected to be able to produce quality management information to support management policies. In addition, with good management of administrative activities, it is hoped that it will be able to provide comfort for students and parents of guardians in making transactions. To anticipate the occurrence of tuition payment services that are slow, not fast and inaccurate due to the large number of student payments. Seeing the duties and functions that must be carried out by administrative officers of SMP N 17 Semarang to hold a School Information system, the authors built a School Management Information System as an alternative to make it easier for administrative officers to input new student admissions, student data collection and tuition payments. which is in SMP N 17 Semarang.

This study aims to analyze the effect of work discipline on employee performance with the Work Environment as a Moderation Variable. At one of the private universities in Semarang. The sample is all members of the population using a saturated sampling method. The analytical tool used in this research is Moderation Regression Analysis. Hypothesis 1 testing shows that the value of t count = 2.745> t table = 1.645 with a significance number = 0.005 < = 0.05 (significant). So (H1) which states that work discipline has a positive effect on employee performance is proven. Regression coefficient β1 = 0.257 (positive sign), this can be interpreted that the higher the work discipline, the higher the employee performance. Hypothesis testing 2. Testing (H2) shows that the t value of the influence of the moderating variable is 2.599> t table = 1.645 with a significance number = 0.016 < = 0.05 (significant). (H2) which states that the Work Environment positively moderates the effect of Work Discipline on Employee Performance. The interaction test shows β2 = 0.175 (positive sign), this can be interpreted that a good work environment will strengthen the effect of work discipline on employee work discipline.  Keywords: work discipline,  Employee performance, Work environment

financial information in schools. Payment information which is the basis for schools to determine future policies. The object of research in this thesis is the Demak Development High School which is one of the agencies engaged in the field of science and education. The research objective is to design an effective and efficient school payment administration recording information system and design a school payment administration recording information system that has a system security that can maintain the accuracy of the data. The research method used is the Borg and Gall R&D Development Research model, the Prototyping System Development Method to produce a product in the form of a Prototype with 6 stages: Research and Data Collection, Planning, Initial Product Development, Product Testing, Product Revision, Final Trial. The conclusion from the results of this study is that this system can facilitate the recording of administrative payment transactions so that there are no mistakes in recording, users can easily present payment reports more quickly so that they can minimize recording time and recording errors, and make it easier for users to print payment reports with affectic and efficient results so as to support and accelerate decision making