Judul: Estimation of fertility rate by using own children method
Abstrak: Karya ilmiah ini mempunyai dua tujuan. Pertama, memelajari pendugaan angka fertilitas secara tidak langsung dengan menggunakan metode anak kandung. Hasil karya ilmiah ini menunjukkan langkah-langkah dan data yang dibutuhkan untuk menghitung angka fertilitas dalam metode anak kandung. Metode anak kandung menggunakan dasar metode reverse survival. Kedua, menghitung pendugaan angka fertilitas menurut usia dengan menggunakan metode anak kandung dan menghitung angka fertilitas total. Karya ilmiah ini menggunakan data hipotetik yang dibangkitkan berdasarkan informasi pola fertilitas RT 08 RW 02 Kecamatan Kembangan, Kelurahan Joglo, Jakarta Barat dan angka fertilitas total DKI Jakarta tahun 2010. Hasil karya ilmiah ini memperlihatkan bahwa metode anak kandung dapat menghitung pendugaan angka fertilitas menurut usia tahun 2009-2010 dan menentukan angka fertilitas total tahun 2009-2010 yaitu rata-rata kemampuan setiap perempuan selama masa reproduksi akan mempunyai 1 atau 2 anak. Karya ilmiah ini juga menganalisis hubungan angka harapan hidup pada saat lahir dengan angka fertilitas. Hasilnya menunjukkan angka harapan hidup pada saat lahir yang terlalu kecil akan menghasilkan angka fertilitas total yang lebih tinggi dan angka harapan hidup pada saat lahir yang besar akan menghasilkan angka fertilitas total yang lebih rendah., This study has two objectives. First, to study the estimation of fertility rate indirectly by using own children method. The result of this study shows the steps and required data to calculate fertility rate based on own children method. The own children method uses basis reverse survival method. Second, to calculate estimates of age specific fertility rate using own children method and the total fertility rate. This study uses hypothetic data generated based on the information pattern of fertility of RT 08 RW 02 Subdistrict Kembangan, Urban Village Joglo, West Jakarta and the total fertility rate of DKI Jakarta in 2010. The result shows that the own children method can calculate estimates of fertility rate by age in 2009-2010 and determine the total fertility rate in 2009-2010, that is the average ability of every woman during their reproductive years will have 1 or 2 children. This study also analyzed the relationship of life expectancy at birth with fertility rate. The result shows life expectancy at birth which is too small will produce a higher total fertility rate and life expectancy at birth which is too big will produce a lower total fertility rate.
Keyword: angka fertilitas, metode anak kandung, reverse survival

Judul: Pendugaan Taklangsung Angka Fertilitas Total Menggunakan Rasio Anak-Wanita
Abstrak: Fertility is an important factor in population projection. Measurement of fertility can be used as a consideration in the decision making of regional planning and economic development. As a developing country, Indonesia has difficulties in birth data collecting such that Indonesia has not any vital statistics that can be used as a reference. For these conditions, fertility measurements are then performed by indirect methods such as Rele, Palmore, Gunasekaran-Palmore, last live birth and own children methods. TFR (Total Fertility Rate) is the average number of children that would be born to a woman over her life time. CWR (Child-Woman Ratio) is the number of children born to women of childbearing age. In this paper, the Palmore method will be modified by including implied Total Fertility Rate (iTFR) and modified Total Fertility Rate (iTFR*) variables. Referring to the Palmore method, regression equations were made to estimate the TFR by using either iTFR or iTFR* as one of the independent variable candidates. Based on census data of the population of Indonesia in 2010, TFR estimation using iTFR produces better estimate than iTFR*. It is confirmed by the fact that MAPE values for both estimation are 6.95% and 4.06%, respectively.
Keyword: Bogor Agricultural University (IPB), Palmore method., CWR, TFR, indirect measure, fertility

Judul: Characterizations of low alloy steel sae 4422  plated with chromic acid (Cro3)
Abstrak: Characterizations of low alloy steel SAE 4422 plated with chromic acid (CrOrO3) was use Optical Microscopy (OM), Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD), RD),Energy Dispersive Analysis of X-Ray (EDAX), Hardness Test and Roughness Test. Microstructures analysis exhibits cracks and grain boundaries microcracks as a characteristics of chrome metal found at plating metal. Perlite and Ferrite as grains of steel found at base metal with grain boundaries around it. Phase analysis of plating metal appropriate to chrome metal with lattice constant (a) is 2.559 Å and phase analysis of base metal appropriate to iron ferrite with lattice constant (a) is 3.318 Å. Both plating and base metal have cubic system. Chemical analysis of plating metal at surface section exhibits that cracks area have highest value of carbon element compare with grains and grains boundaries area. While chemical analysis of base metal at cross section exhibits that perlite have highest value of carbon element compare with ferrite and grain boundaries. The hardness value of plating metal at surface section and cross section are 753 and 637 VHN. While, the hardness value of base metal and interface area at cross section are 205 and 373 VHN. The roughness value at measurement points of chrome surface for as received sample are 0.445 μm. Observation used Optical Microscopy and Scanning Electron Microscopy exhibits surface irregularities combine to form surface texture of plating metal at surface section.
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