Judul: Generasi Harmonik Tinggi Akibat Dispersi Spasial pada Silikon.
Abstrak: Optika nonlinier mengalami kemajuan pesat di era modern ini. Beberapa bidang yang terpengaruh karena perkembangan optik nonlinier adalah karakterisasi bahan. Optika nonlinier memanfaatkan radiasi generasi harmonik tinggi yang dihasilkan oleh bahan untuk mengetahui struktur yang ada. Pada penelitian ini, akan digunakan bahan Silikon, dimana nantinya akan diamati spektrum Second Harmonic Generation (SHG) yang berasal dari bagian bulk atau dispersi spasial dan menggunakan Model Ikat Hiperpolarisabilitas Sederhana (SBHM). Intensitas yang dihasilkan Si (001) memilki empat puncak, dimana fase puncak antara lapisan permukaan dan bulk adalah sama. Sehingga dispersi spasial pada Si (001) masih belum bisa dibedakan dengan intensitas di lapisan permukaan.
Keyword: SBHM, Second Harmonic Generation (SHG), dispersi spasial

Judul: Investigation of Second Harmonic Generation Spatial Dispersion in Silicon for Any Polarization
Abstrak: Generasi harmonik kedua (SHG) merupakan proses optik non-linier yang ditunjukkan dengan foton berinteraksi dengan bahan non-linier untuk membentuk foton baru yang memiliki dua kali frekuensi foton awal. Pengukuran generasi harmonik kedua menggunakan model ikat hiperpolarisabilitas sederhana (SBHM) dapat digunakan untuk mempelajari orientasi ikatan pada bahan sentrosimetris dengan cara yang lebih sederhana tanpa melalui analisis tensor suseptibilitas yang kompleks. Dispersi spasial merupakan sumber generasi harmonik kedua yang berasal dari perbedaan besarnya amplitudo medan listrik makro untuk setiap atom pada kedalaman material yang berbeda. Penelitian ini dilakukan untuk memodelkan respon dari bagian bulk silikon (111) ketika dikenai medan listrik dengan variasi sudut polarisasi masukan. Respon tersebut dapat direpresentasikan melalui intensitas generasi harmonik kedua dalam arbitrary units. Koefisien transmisi Fresnel diperhitungkan dalam simulasi karena dapat digunakan untuk melihat semua sudut polarisasi masukan. Intensitas keluaran generasi harmonik kedua pada silikon (111) dihitung untuk polarisasi xp dan xs. Pada polarisasi xp terjadi perubahan polarisasi masukan dari s ke p. Terlihat adanya perubahan fase dan perubahan puncak intensitas untuk tiap variasi sudut polarisasi masukan pada polarisasi xp dan xs. Perubahan puncak intensitas terjadi karena adanya dispersi spasial yang berasal dari simetri. Perbandingan perubahan puncak intensitas menunjukkan pengaruh serta kontribusi dispersi spasial pada bulk silikon (111)., Second harmonic generation (SHG) is a non-linear optical process demonstrated by photons interact with non-linear materials to form new photons which have twice the frequency of the original photons. The second harmonic generation measurement using the simplified bond hyperpolarizability model (SBHM) can be used to study the bond orientation of centrosymmetric materials in a simpler way without going through complex susceptibility tensor analysis. Spatial dispersion is the source of the second harmonic generation that comes from the difference in the magnitude of the macro electric field amplitude for each atom at different material depths. This research was conducted to model the response of the bulk silicon (111) when subjected to an electric field with varying input polarization angle. The response can be represented by the intensity of the second harmonic generation in arbitrary units. The Fresnel transmission coefficient is taken into account in the simulation because it can be used to view all input polarization angles. The output intensities of the second harmonic generation on silicon (111) were calculated for the xp and xs. In the xp polarization, the input polarization changes from s to p. It can be seen that there is a phase change and a change in peak intensity for each variation of the input polarization angle on the xp and xs. The change in peak intensity occurs because of the spatial dispersion that comes from the symmetry. Comparison of changes in peak intensity shows the influence and contribution of spatial dispersion on bulk silicon (111).
Keyword: bulk, second harmonic generation, silicon, simplified bond hyperpolarizability model, spatial dispersion

Judul: Manajemen Pemeliharaan Kuda (Equus caballus) Untuk Upacara Kenegaraan Dan Sarana Kesenjataan Di Detasemen Kavaleri Berkuda (DenKavkud) TNI-AD Parongpong
Abstrak: Cavalry Horse Detachement (Denkavkud) Indonesian National Army-Cavalary Parongpong is one of the Indonesian military units that utilize the horse and train it as a means of purpose of formal state ceremony and armed forces. Skills possessed by the horse cavalry was the result of care management and specialized training provided by the trainer. Aspects of care management are breeding, feeding, and management. Horses that are kept in the Denkavkud, Parongpong are stallions, mares, foals, and military horses. Total populations of horses at Denkavkud are 183 horses. Besides commited horse training (remonte), Denkavkud also did breeding program to produce horses that can be trained and used as a military horse. There are some issues contained in Denkavkud, such as some of the nutrients needed by the horses not being met from feed given. One of these is crude protein and lysine. Lactation mares was crude protein and lysine deficiency. The number of death in 2010 is higher than previous years. Based on the number of horses that died from January until June 2010 is 11 horses. The average mortality was caused by colic. Colic is caused by excessive eating, excessive drinking during hot, moldy food, and even by investment roundworms. Animal welfare in Denkavkud can be enhanced by improvement of feed given and improving the health of livestock through improved sanitation.
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