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We present a Y-branch power splitter design with a multimode section using GaN on Sapphire at telecommunication wavelength. The GaN sample optical properties were also investigated, resulting in a refractive index for the GaN layers nTE=2.289±0.001 and nTM=2.324±0.00. Optimization of the structure parameters for this structure was conducted accurately using BPM methods. The results demonstrated the possibility of realizing a GaN-based Y-branch power splitter for various applications. AbstrakDesain Pembagi Daya Pencabangan Y Rugi-Rugi Rendah Berbasis GaN. Pada penelitian ini dilaporkan desain pembagi daya pencabangan Y dengan memanfaatkan pandu gelombang moda jamak pada panjang gelombang telekomunikasi menggunakan material GaN pada Safir. Hasil pengukuran sifat optik menunjukkan bahwa indek bias sampel GaN pada Safir adalah nTE=2,289±0,001 dan nTM= 2,324±0,00. Dari hasil optimasi parameter struktur dengan metoda BPM ditunjukan bahwa pembagi daya pencabangan Y berbasis bahan GaN.berpotensi untuk direalisasi

Technological developments in the health sector for the safety of neonates are essential. Such efforts are needed to curb the increase in premature infant mortality cases caused by bacteria, asphyxia, infections, and poor management of facility equipment. Furthermore, preterm and other at-risk babies have low ability to regulate temperature and produce body heat as characterized by their dry skin conditions; hence, the need for baby incubators. For their operation, these baby incubators provide strict regulated energy change that is influenced by heat transfer caused by the surrounding atmospheric temperature and humidity. This paper presents the design, construction, and performance study of a proposed Fuzzy-PID hybrid control system for regulating temperature and humidity in a baby incubator. To accomplish its goal, the proposed controller must be able to distribute heat and maintain humidity in the incubator under fluctuating atmospheric conditions to keep the baby’s body warm. Performance tests of the proposed hybrid controller were conducted by comparing temperature and humidity outputs in the baby incubator against predetermined expected values. Results show that the proposed controller is able to successfully achieve and maintain the temperature and humidity set points. Further examination also suggests that the proposed Fuzzy-PID hybrid control offers an improved overall system response performance compared to the PID controller.

The existence of contextual learning resources has been known to be able to improve the meaningful learning, particularly biology learning. This research provides the information about the medicinal plant utilized by the Baduy tribe as well as its endeavour in developing the results obtained as a contextual-based module. This research and development was designed using 4D model by Thiagarajan, which was limited in three phases (define, design, and development). The data was collected using interview guideline, validation sheets, and students’ response questionnaires. The research findings inform that there were 67 species utilized by the Baduy tribe as the medicinal plants. These species belong to Spermatophyte and divided into 31 families. Furthermore, the validation results showed that the media developed was valid; in which the best component of module, based on students’ response, was its presentation (the mean value was 89.5%). It can be concluded that the media developed is feasible to use as learning resource.

Inhabitants of the Kendeng mountain region depend on the biodiversity of the forest resources for their livelihood. Mushrooms are important resource that provide benefits to mankind. The aim on this research was to document traditional knowledge in bracket fungi utilization to treat health problems in Baduy tribe community. The results described in this paper were obtained through the exploration and identification of bracket fungi as well as the interview to determine their cultural significance for Baduy people. Quantitative approaches were used to determine the Use Values (UV), Informant Consensus Factor (ICF) and Fidelity level (FL) values. A total of 6 species that were identified as bracket fungi were included to Basidiomycota. The Baduy community considers the main use of bracket fungi as a medicine for several ailments. The highest UV, ICF and FL value were obtained by Ganoderma lucidum. This study provides the information regarding bracket fungi species with the high use values that could be employed in pharmacological research and further biotechnological approaches in order to achieve an adequate revenue.