Judul: Analisis Fundamental dan Penilaian Pakar Dalam Berinvestasi Saham.
Abstrak: Pasar modal memiliki peran penting dalam perekonomian suatu negara yang dalam jangka panjang dapat meningkat dengan penerbitan saham, surat utang dan obligasi. Penelitian ini bertujuan untuk menganalisa perusahaan secara fundamental sebagai alternatif dalam berinvestasi saham di subsektor ritel. Pengumpulan data terbagi menjadi dua yaitu primer, dan sekunder. Pengambilan data primer dilakukan dengan wawancara dengan pakar yang menjadi dasar dalam pengambilan keputusan menggunakan metode Analytical Hierarchy Process. Pengambilan data sekunder dilakukan dengan mengunduh data perusahaan yang ada di Bloomberg atau BEI (Bursa Efek Indonesia) periode 2012-2016 sebagai dasar dalam analisa fundamental saham. Hasil penelitian menunjukkan bahwa terdapat perbedaan penilaian antara analisa fundamental dengan penilaian menurut pakar. Berdasarkan analisa fundamental, LPPF (PT. Matahari Dept. Store Tbk.) memiliki kinerja yang lebih baik dibandingkan empat perusahaan lainnya. Sedangkan penilaian dengan metode AHP menunjukkan bahwa RALS (PT. Ramayana Lestari Sentosa Tbk.) lebih disukai oleh analis dengan skor 0,455 dan LPPF menjadi prioritas kedua dengan skor 0,195. Hal tersebut mengindikasikan bahwa dalam berinvestasi saham, penting untuk menggabungkan penilaian fundamental dan penilaian menurut pakar untuk mendapatkan penilaian yang lebih baik.
Keyword: subsektor ritel, analytical hierarchy process, analisa fundamental

Judul: Analisis Penilaian Harga Saham untuk Pengambilan Keputusan Investasi (Studi Kasus Perusahaan Subsektor Perbankan)
Abstrak: Pasar modal mempunyai karakteristik High Risk High Return. Minat investasi masyarakat di Indonesia terus meningkat setiap tahunnya khususnya minat investasi terhadap pasar modal, minat masyarakat dalam berinvestasi meningkat hingga 92,99% pada tahun 2021. Investor dalam berinvestasi seringkali menunjukkan perilaku yang bersifat irasional dalam pengambilan keputusan investasi. Ketika melakukan investasi terkadang investor overconfidence dan berperilaku herding dalam pengambilan keputusan investasi. Dalam meminimalisir risiko kerugian diperlukan analisis penilaian saham dengan analisis fundamental dan analisis teknikal untuk mengetahui nilai saham. Penelitian ini bertujuan untuk menganalisis nilai intrinsik saham pada perusahaan subsektor perbankan dengan menggunakan metode Price Earning Ratio (PER), Dividend Discount Model (DDM), dan Price to Book Value (PBV), serta menganalisis tingkat keakuratan dengan analisis Root Mean Square Error (RMSE). Jenis data yang digunakan adalah data kuantitatif. Data sekunder didapatkan dari laporan keuangan Bursa Efek Indonesia. Teknik pengambilan sampel yaitu purposive sampling. Hasil penelitian berdasarkan pendekatan PER, DDM dan PBV investor disarankan untuk membeli sebelas saham undervalued yaitu, BBCA, BBNI, BBRI, BDMN, BJBR, BJTM, BMRI, BNBA, BNII, MEGA, dan SDRA pada tahun 2021. Berdasarkan analisis RMSE metode Price Earning Ratio (PER) dan Dividend Discount Model (DDM) merupakan metode penilaian harga saham yang lebih akurat., The capital market has the characteristics of High Risk High Return. Public investment interest in Indonesia continues to increase every year, especially investment interest in the capital market, public interest in investing increases to 92.99% in 2021. Investors in investing often show irrational behavior in making investment decisions. When making investments, investors are sometimes overconfident and behave herding in making investment decisions. In minimizing the risk of loss, stock valuation analysis is needed with fundamental analysis and technical analysis to determine the stock value. This study aims to analyze the intrinsic value of shares in the banking sub-sector companies using the Price Earning Ratio (PER), Dividend Discount Model (DDM), and Price to Book Value (PBV) methods, and analyze the level of accuracy with Root Mean Square Error (RMSE) analysis. The type of data used is quantitative data. Secondary data is obtained from the financial statements of the Indonesia Stock Exchange. The sampling technique is purposive sampling. The results of the study based on the PER, DDM and PBV approaches investors are advised to buy eleven undervalued stocks, namely, BBCA, BBNI, BBRI, BDMN, BJBR, BJTM, BMRI, BNBA, BNII, MEGA, and SDRA in 2021. Based on RMSE analysis of the Price Earning method Ratio (PER) and Dividend Discount Model (DDM) are more accurate stock price valuation methods.
Keyword: Price Earning Ratio (PER), Dividend Discount Model (DDM), Price to Book Value (PBV), Stock Price, Root Mean Square Error (RMSE)

Judul: Synthesis of Apatite - Chitosan Composite Using Duck Eggshell and Chitosan with Temperature and pH Control
Abstrak: Composite of apatite-chitosan was prepared by using chitosan as polymer matrix. Calcium phosphate was prepared from CaO and (NH4)2HPO4, which the ratio Ca : P had to be 1.67. Chitosan is produced by deacetilase from biopolymer chitin. Duck eggshell (95% CaCO3) as starting material was converted to be calcium oxide (CaO) through calcinations with temperature 1000oC for 5 hours. In-situ and ex-situ methods were prepared from apatite and chitosan (dissolved with acetate acid 2%). Calcium phosphate prepared for bone implantation, but it is too fragile and brittle to be implant into the body. So addition of chitosan can decrease crystalinity and increase mechanic characteristic (tougher). Composite apatite-chitosan was resulted by fast precipitation. Fast precipitation was held in a breaker glass with nitrogen atmosphere, under controlled temperature at 37oC and pH 7, in order to increase amount of hydroxyapatite. Precipitation with CaO which was dropped by (NH4)2HPO4. Hydroxyapatite and chitosan were appearing at samples with in-situ and ex-situ methods which indicating by peak matching of XRD (closed lattice parameter, crystal size), overlapping at FTIR spectra and supporting by SEM picture (homogenous and agglomerated particle). However, it still needs further research to examine biocompatibility osteoconductive degree of sample by in-vivo and in-vitro test.
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