Judul: Factors Related to the Performance of Cadres in Handling Stunting  in Pabuaran Village Bogor Regency
Abstrak: Kader posyandu merupakan ujung tombak utama dalam memasyarakatkan pengetahuan mengenai kesehatan, salah satunya terkait isu stunting. Seorang kader yang baik dapat tercermin dari kinerjanya. Akan tetapi, beberapa penelitian menunjukkan kinerja kader masih rendah. Tujuan penelitian ini adalah (1) mendeskripsikan tingkat kinerja kader posyandu dalam penanganan stunting, dan (2) menganalisis hubungan karakteristik kader, kualitas pelatihan, kompetensi komunikasi interpersonal, dan motivasi dengan kinerja kader dalam penanganan stunting. Penelitian ini menggunakan metode sensus dengan pendekatan kuantitatif dan didukung data kualitatif dengan responden sebanyak 36 orang kader posyandu di Desa Pabuaran, Kabupaten Bogor yang diambil secara sensus. Hasil penelitian menunjukkan tingkat kinerja kader posyandu dalam penanganan stunting berada pada kategori sedang. Penelitian ini juga menunjukkan bahwa pekerjaan, lama menjadi kader, tingkat pengetahuan, intensitas pelatihan, kompetensi komunikasi interpersonal, dan motivasi ekstrinsik berhubungan nyata dengan kinerja kader posyandu dalam penanganan stunting., Posyandu cadres are the main spearhead in disseminating knowledge about health, one of them is the issue of stunting. A good cadre can be reflected from their performance. However, several studies have shown that the performance of cadres is still low. The purpose of this study are to (1) describe the performance level of posyandu cadres in handling stunting, and (2) analyze the relationship between cadre characteristics, training, interpersonal communication competence, and motivation with cadres' performance in handling stunting. This study used a census method with a quantitative approach and supported by qualitative data with 36 posyandu cadres in Pabuaran Village, Bogor Regency who were taken by census. The results of the study show that the performance level of posyandu cadres in handling stunting is in the moderate category. This study also shows that job, years of service, level of knowledge, training intensity, interpersonal communication competence, and extrinsic motivation are significantly related to the performance of posyandu cadres in handling stunting.
Keyword: performance, posyandu cadres, stunting

Judul: Knowledge, Attitudes and Practices of Integrated Health Service Cadres in the Bogor District with High and Low Prevalence of Stunting
Abstrak: Penelitian ini bertujuan menganalisis perbedaan pengetahuan, sikap, dan praktik kader posyandu di daerah stunting tinngi dan rendah. Desain penelitian yang digunakan yaitu cross sectional study dengan melibatkan 76 subjek dan dilaksanakan pada bulan November 2019 di Desa Cibubulang serta Desa Dramaga, Bogor. Sebagian besar subjek merupakan ibu rumah tangga (85,5%) paling banyak berusia antara 36-45 tahun (44,7%) dengan pendidikan terakhir yaitu SD (35,5%). Strata posyandu yang mendominasi yaitu posyandu tingkat madya (48,7%) dan umumnya pernah mendapatkan pelatihan dan/atau sosialisai terkait stunting (75%). Tidak ada perbedaan signifikan antara pengetahuan, sikap, dan praktik kader posyandu pada kedua daerah (p>0,05), juga tidak ditemukan hubungan signifikan antara pengetahuan dan sikap kader posyandu dengan karakteristik kader (p>0,05), kecuali hubungan pengetahuan dengan pendidikan kader (r = 0,258,p = 0,024). Selain itu, terdapat hubungan signifikan antara pengetahuan kader dengan pratiknya di daerah prevalensi stunting rendah (r = 0,368, p = 0,025)., The objective of this study was to analyze the differences of knowledge, attitudes, and practices of integrated health service cadres in the high and low stunting area. A cross sectional design was applied to this study. In addition, this study was involved 76 subjects and conducted in November 2019 at Cibubulang and Dramaga Village, Bogor. Most of the subjects were housewives (85,5%) with the most age between 36-45 years old (44,7%). The educational level of cadres is elementary school (35,5%). The most integrated health service level were mid-level (48,7%) and generally has been received training and socialization related to stunting (75%). There was no significant difference between knowledge, attitudes and practices of integrated health service cadres in these two areas (p> 0,05), ), except for the relationship between knowledge and cadre education (r = 0,258, p = 0,024). In addition, there was a significant relationship between cadres' knowledge and practice in areas with a low stunting prevalence (r = 0,368, p = 0,025).
Keyword: Kader Posyandu, Pengetahuan, Praktik, Sikap, Stunting

Judul: Hamiltonian formulation for linear waves motion in two layers fluid
Abstrak: The surface wave could be considered as a wave that separates two fluids, namely water and air. Based on this assumption, it is introduced the interfacial wave, a wave between two layers of fluid with different density. The formulation of interfacial waves motion begins with deriving the base equation of irrotational ideal fluid. Furthermore, according to irrotational fluid assumption, the base equation can be stated in velocity potential. In this derivation, the fluids domain is assumed to be restricted by rigid lid boundary conditions, both at the upper and lower limit. Therefore, the interfacial waves motion can be explained in a hamiltonian formulation. In the hamiltonian formulation, total energy is defined as the sum of kinetic and potential energy. The hamiltonian system is obtained from reduction of kinetic energy by using the Dirichlet Neumann Operator. The resulted kinetic energy equation is nonlinear. Therefore, this form is linearized by first part of the Taylor expansion. This linearization gives a dispersion relation of linear wave. Based on this dispersion relation, the phase speed of the linear wave depends on the density ratio of the two layers fluid.
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