Pengenalan Internet of Thing pada anak-anak Panti Asuhan Tiara Putri Korpri

The purpose of this community service activity is to introduce the Internet of Things to children, particularly those in orphanages. The extraordinary development of digital communication technology offers significant positive impacts when properly understood. The method implemented is a knowledge transfer approach, which includes lectures and dialogues, along with examples of commonly used applications. The evaluation was conducted by dividing the participants into two groups: children and teenagers. For the children, the evaluation method involved a question-and-answer session with the success parameter being the number of participants raising their hands. For the teenagers, a pre-test and post-test consisting of multiple-choice questions were administered. The results were quite remarkable, with the success rate for the children reaching 62.5% and the teenagers nearly 88%, proving that the material was very well absorbed

Analysis of Vitamin A Content and Antioxidant Test in Super and Bulk Olein

 Cooking oil is the essential food for bodies. Cooking oil should be enriched with vitamin A because this substance plays a critical role in maintaining health. Cooking oil contains antioxidant compounds, which inhibit or slow down oxidation reactions. This study aimed to determine the amount of vitamin A in super olein and bulk olein before fortification and the amount of antioxidant content in super olein and bulk olein before fortification. The amount of vitamin A content was obtained using the High-Performance Liquid Chromatography (HPLC) method of <0.005 IU/gram, while the antioxidant test results were carried out by the 2,2-Diphenyl-1-picrylhydrazyl (DPPH) method using UltraViolet-Visible Spectrophotometry (UV-Vis). The resulting antioxidant activity has an inhibition value of 23% and 10% in bulk and super olein, respectively. Cooking oil is the essential food for bodies. Cooking oil should be enriched with vitamin A because this substance plays a critical role in maintaining health. Cooking oil contains antioxidant compounds, which inhibit or slow down oxidation reactions. This study aimed to determine the amount of vitamin A in super olein and bulk olein before fortification and the amount of antioxidant content in super olein and bulk olein before fortification. The amount of vitamin A content was obtained using the High-Performance Liquid Chromatography (HPLC) method of <0.005 IU/gram, while the antioxidant test results were carried out by the 2,2-Diphenyl-1-picrylhydrazyl (DPPH) method using UltraViolet-Visible Spectrophotometry (UV-Vis). The resulting antioxidant activity has an inhibition value of 23% and 10% in bulk and super olein, respectively

Implementasi Kombinasi Secret Sharing dan Steganografi Citra Least Significant Bit dengan QR Code

Information security becomes very important as long as information technology continues to develop. This research combines Shamir Secret Sharing (Scheme ( , )) cryptography and Least Significant Bit (LSB) steganography to improve information security in the aspect of confidentiality. The need to collect a minimum number of shares, Scheme ( , ) method makes it more difficult for hackers to reconstruct the message. The implementation of the combination of cryptography and steganography produces an application program created with Python programming languange version 3.11.2, where the Scheme (t,w) used is  and RGB image as the cover object of LSB method. In determining the location of image pixels that will be inserted into the message, random numbers generated by the Linear Congruential Generator (LCG) algorithm is used. The program can create a share of text messages with a maximum of 8 characters contained in ASCII characters 32 to 126. The result obtained from the share construction program is  QR codes that refers to the stego image that has been inserted by the share, so that the existence of information in the QR code is difficult to know. The program can also reconstruct the message back from  QR codes

Pemberdayaan Komunitas dalam Ekowisata di Pulau Kecil: Kajian Literatur Sistematis Bibliometrik-Analisis Konten (2014-2024)

Small islands possess significant potential as ecotourism destinations; however, they also face various limitations, including restricted land area, inadequate infrastructure, and isolation from other regions. These conditions often lead to resource exploitation by certain parties without considering sustainability. Therefore, the role and capacity of human resources (HR) are crucial, supported by collaboration among the government, stakeholders, and local communities to ensure sustainable management. This study analyzes community empowerment on small islands through a Systematic Literature Review (SLR) and bibliometric analysis to identify key themes and research gaps. The study also evaluates the extent to which this aspect has been discussed in previous research and reveals existing gaps. The literature analyzed includes publications from the past ten years (2014-2024), sourced from the Publish or Perish (PoP) database. The findings indicate that although community empowerment has been widely discussed in the literature, studies specifically focusing on the context of small islands remain limited. Several aspects, such as the impact of climate change and political dynamics in community-based ecotourism management, have not been extensively examined and represent research gaps that warrant further exploration in future studies. Findings highlight the need for further studies on climate change impacts and governance in community-based ecotourism

Inventory Of The Order Orthoptera In Institut Teknologi Sumatera

Orthoptera is always associated with plant vegetation, as these insects are herbivores and rely on plants as their primary food source. Institut Teknologi Sumatera is home to various types of vegetation and plant diversity, both naturally growing and managed for specific purposes. Based on this background, research is needed to inventory and document the species of grasshoppers found at Institut Teknologi Sumatera and understand their distribution and habitat. Data collection on the diversity of the Orthoptera order was carried out at Institut Teknologi Sumatera and identified in the Zoology Laboratory at Institut Teknologi Sumatera. Sampling was conducted using an insect net and the hand sorting method. Observations were conducted in the morning from 07:00 – 10:00 AM WIB and in the afternoon from 03:00 – 05:00 PM WIB. Based on the research conducted at the Institut Teknologi Sumatera, 12 genera were found at four observation station points. At station I, 161 individuals were found; at station II, 204 individuals were found; at station III, 136 individuals were found; and at station IV, 145 individuals were found. 12 genera of the order Orthoptera were found, belonging to four families. The most commonly found family was Acrididae, while the least commonly found families were Gryllidae and Pyrgomorphidae

Analisis Proteksi Sistem Distribusi Listrik Overcurrent Relay (OCR) Berdasarkan Standar IEC 60255-151 dan IEEE C37

Gangguan arus lebih (overcurrent) dalam sistem distribusi tenaga listrik dapat menyebabkan kerusakan peralatan, hilangnya pasokan energi, hingga risiko kebakaran. Oleh karena itu, diperlukan sistem proteksi yang andal dan sesuai dengan standar internasional. Penelitian ini menganalisis kinerja Overcurrent Relay (OCR) dalam mendeteksi dan merespons gangguan, dengan mengacu pada standar IEC 60255-151 dan IEEE C37.112 serta IEEE C37.113. Simulasi dilakukan menggunakan perangkat lunak ETAP 19 dengan skenario gangguan tiga fasa (3φ) di salah satu bus sistem distribusi. Relay terdekat dengan titik gangguan bekerja lebih cepat, sementara relai lainnya bertindak sebagai cadangan (backup), sesuai prinsip grading waktu. Temuan ini menegaskan pentingnya pemilihan parameter proteksi yang tepat agar OCR dapat berfungsi secara optimal dan terintegrasi dalam sistem distribusi listrik modern

Analgetic effectiveness of fenugreek seed extract (Trigonella foenum-graecum L.) in acetic acid-induced male ddY strain mice

Pain represents a significant health challenge, with current nonsteroidal anti-inflammatory drugs (NSAIDs) carrying hepatotoxicity risks that necessitate safer alternatives. This study evaluated the analgesic activity of fenugreek (Trigonella foenum-graecum L.) seed extract using the acetic acid-induced writhing test in male ddY strain mice. Twenty-five mice were randomly allocated into five groups (n=5): negative control (1% Na-CMC), positive control (diclofenac sodium 50 mg/kg), and three fenugreek extract groups (200, 400, and 600 mg/kg). Pain was induced by intraperitoneal injection of 1% acetic acid, and writhing episodes were counted for 180 minutes. Data were analyzed using one-way ANOVA with Tukey's post-hoc test. All fenugreek doses significantly reduced writhing compared to negative control (p < 0.05). The extract demonstrated dose-dependent analgesic activity, with protection rates of 30.8%, 35.9%, and 41.0% for 200, 400, and 600 mg/kg doses, respectively. The highest dose (600 mg/kg) achieved 71% of diclofenac's analgesic efficacy (46.2% protection). Phytochemical screening confirmed the presence of alkaloids, flavonoids, saponins, steroids, tannins, and polyphenols. These findings suggest fenugreek seed extract possesses significant analgesic properties and represents a promising natural alternative for pain management

THE EFFECT OF DIFFERENCES IN CHARACTERISTICS OF BIDARA LEAF EXTRACT (ZIZIPHUS MAURITIANA L.) OBTAINED FROM MACERATION, ULTRASONIC, AND SOXHLET METHODS

Bidara leaves are known to contain alkaloids, flavonoids, steroids, tannins, and saponins. This study aims to analyze how the three extraction methods used can affect the characteristics of bidara leaf extract. The extraction methods used in this study were the maceration method, the ultrasonic method, and the soxhlet method. The calculation of the yield value was carried out and the difference was seen with the largest number in the ultrasonic method 10.37% w/w, the soxhlet method 3.49% w/w, and the maceration method 3.68% w/w, then the stock solution calculation was carried out and the results were obtained ultrasonic method 0.1%, soxhlet method 0.0044%, and maceration method 0.012%. The evaluation used was phytochemical screening. The results of phytochemical screening showed that the leaf extract contained secondary metabolites, namely alkaloids, flavonoids, steroids, tannins, and saponins. It can be concluded that the three extraction methods in bidara leaves did not show differences in the presence of secondary metabolites, but affected their yield values

Perkembangan Permukiman Peri Urban di Kota Manado Berdasarkan Preferensi Bermukim Masyarakat

This study investigates the development of peri-urban settlements in Manado City, focusing on residents' housing preferences. The rapid growth of Manado’s urban population has caused housing development to expand into peri-urban areas due to limited space in the city center. This research aims to analyze the patterns of formal housing development in these areas and assess the factors that influence residents' decisions to live in peri-urban Manado. Using a quantitative approach, data were collected from 165 respondents living in formal housing in two peri-urban areas: Paniki Bawah and Sea I. The data were analyzed using descriptive statistics and conjoint analysis. Results show that 56% of respondents identified accessibility, particularly proximity to work and transportation, as the most important factor in choosing housing, followed by the availability of infrastructure (33%), environmental comfort (24%), and housing affordability (21%). Paniki Bawah experienced the highest population growth at 56% from 2012 to 2022, driven by significant formal housing expansion. These findings provide crucial insights for urban planners and policymakers in designing residential areas that meet residents' preferences and efficiently manage land use in the peri-urban regions of Manado

Quantitative Performance Analysis of Spring-Mass-Damper Control Systems: A Comparative Implementation in Python and R

The numerical simulation of control of spring-mass-damper (SMD) systems offer critical insights into dynamical systems and computational methodologies. This study provides a comprehensive comparative analysis of implementing SMD systems across two prominent open-source scientific computing platforms: Python and R. By examining both open-loop and closed-loop system configurations, the research investigates the computational performance, numerical accuracy, and implementation characteristics of these platforms. Utilizing an idealized one-dimensional SMD system with a Proportional-Integral-Derivative (PID) controller, the study conducted extensive numerical simulations and statistical performance analyses. Results revealed Python's significant advantages in execution speed, achieving up to 63.57% reduction in runtime for controlled system simulations, while R demonstrated superior consistency in execution and memory usage. The controlled system demonstrated exceptional performance, with a final position error of merely 0.4% and enhanced damping characteristics. This work not only bridges theoretical stability analysis with empirical performance insights but also promotes reproducibility and transparency in computational dynamics research by leveraging open-source platforms