Judul: The Effect of Debt to Equity Ratio and Price to Book  Value on Stock Prices
Abstrak: Pengaruh laporan keuangan suatu perusahaan tehadap harga sahamnya tidak selalu sama, sehingga menjadi masalah bagi investor untuk mengetahui saham yang bagaimana yang layak untuk dibeli. Penelitian ini bertujuan untuk mengetahui dan menjelaskan pengaruh Debt to Equity Ratio (DER) dan Price to Book Value (PBV) baik secara simultan maupun secara parsial terhadap harga saham. Pemilihan sampel yang digunakan adalah enam perusahan semen yang sudah tercatat sebagai emiten di Bursa Efek Indonesia (BEI) periode 2016 hingga 2018 dan mengeluarkan laporan keuangan secara berkala setiap tahunnya. Variabel independen yang digunakan dalam penelitian ini ada dua yaitu Debt to Equity Ratio dan Price to Book Value, sedangkan untuk variabel dependen yang adalah harga saham. Penelitian ini menggunakan model analisis regresi linier berganda. Hasil penelitian menunjukkan bahwa variabel Debt to Equity Ratio dan Price to Book Value berpengaruh signifikan negatif terhadap harga saham. Hal ini berarti jika DER dan PBV semakin tinggi, maka harga saham akan semakin rendah., The effect of a company’s financial statements on its stock prices is not always the same, so it becomes a problem for investors to find out which stocks are worth buying. This study aims to determine and explain the effect of Debt to Equity Ratio (DER) and Price to Book Value (PBV) either simultaneously or partially on stock prices. The data used are stock prices of six cement companies that have been listed as issuers on the Indonesia Stock Exchange (IDX) for the period 2016 to 2018 and issue financial reports regularly every year. There are two independent variables used in this study, namely Debt to Equity Ratio and Price to Book Value, while the dependent variable used in this study is stock price. This research uses multiple linear regression analysis model. The results showed that the Debt to Equity Ratio and Price to Book Value variables had a significant negative effect on stock prices. It means if DER and PBV are higher, then the stock price will be lower.
Keyword: debt to equity ratio, price to book value, stock price

Judul: The Influence of Performance and Health of Banking Companies on Stock Prices
Abstrak: Penelitian ini dilaksanakan bertujuan untuk menguji pengaruh aspek kinerja perusahaan dan tingkat kesehatan bank terhadap harga saham. Penelitian ini memiliki sampel perusahaan perbankan yang terdaftar di BEI yang berjumlah 22 perusahaan perbankan. Beberapa variabel yang diambil adalah rasio pengukuran fundamental untuk menilai Kinerja dan Kesehatan dari internal dan memasukkan metode RGEC dalam mengambil nilai kualitas Kesehatan perusahaan. Metode analisis yang digunakan pada penelitian ini adalah analisis regresi data panel. Secara umum tingkat kinerja perusahaan perbankan masih sesuai dengan standar yang ditetapkan dalam peraturan Bank Indonesia No 6/10/PBI/2004 dan tingkat kesehatan perbankan dari seluruh perbankan juga masih berada dalam standar sesuai dengan Surat Edaran Bank Indonesia Nomor 15/15/DPNP 2013. Berdasarkan hasil pengujian regresi data panel ditemukan perbedaan pengaruh dari variabel kinerja perbankan dan kesehatan perbankan terhadap harga saham pada perusahaan perbankan BUKU 2 hingga BUKU 4. Masing-masing pengaruh variabel dimulai dari keseluruh Bank variabel CAR, DER, EPS, NPM berpengaruh positif signifikan terhadap harga saham disisi lain NPL dan ROE berpengaruh negative signifikan terhadap harga saham, Bank Buku 2 yaitu variabel NPM, NPL DER berpengaruh positif signifikan terhadap harga saham selanjutnya EPS dan ROE berpengaruh negatif signifikan terhadap harga saham perbankan, Bank Buku 3 variabel CAR, DER, EPS, NIM, NPM berpengaruh positif signifikan terhadap harga saham, variabel NPL dan ROE berpengaruh negatif signfikan terhadap harga saham perbankan terakhir kategori Bank Buku 4 CAR, DER, EPS serta NPL berpengaruh positif signifikan terhadap harga saham perusahaan perbankan yang terdaftar di bursa efek dari tahun 2014 – 2020., This study aims to examine the effect of aspects of company performance and bank soundness on stock prices. This study has a sample of banking companies listed on the Indonesia Stock Exchange, amounting to 22 banking companies. Some of the variables taken are the ratio of fundamental measurements to assess Performance and Health from internal and include the RGEC method in taking the value of the company's Health quality.This study aims to examine the effect of aspects of company performance and bank soundness on stock prices. The analytical method used in this research is panel data regression analysis. In general, the level of performance of banking companies is still in accordance with the standards set out in Bank Indonesia regulation No. 6/10/PBI/2004 and the level of banking soundness of all banks is still within the standard in accordance with Bank Indonesia Circular Letter Number 15/15/DPNP 2013. Based on the results of panel data regression testing, it was found that there were differences in the effect of the variables of banking performance and banking health on stock prices in banking companies BUKU 2 to BUKU 4. Each variable effect starting from the whole Bank variable CAR, DER, EPS, NPM had a significant positive effect on prices. stocks on the other hand NPL and ROE have a significant negative effect on stock prices, Bank Buku 2, namely the NPM variable, NPL DER has a significant positive effect on stock prices, then EPS and ROE have a significant negative effect on banking stock prices, Bank Buku 3 variables CAR, DER, EPS, NIM, NPM have a significant positive effect on stock prices, NPL
Keyword: Banking Performance, Banking Soundness Level, Stock Price, Bank Health

Judul: Construction of Strongly Optimal Binary Linear Code with Minimum Distance 9 and 11
Abstrak: A binary linear code of length n over q F is a subspace of n q F . A code has three parameters that attached to it, namely length, dimension, and minimum distance. A code with length n, dimension k and minimum distance d is often called [n, k, d ]-code. Usually, when two parameters are given, then we want to find a code that has the best value for the last parameter. Based on Gilbert- Varshamov bound, if a [n, k, d ]-code exists and can not be expanded, we call it a strongly optimal code. In this paper, we construct strongly optimal code with minimum distance 9 and 11. In constructing the code, we created a theorem and algorithm based on Gilbert-Varshamov bound before we implement the algorithm to MAPLE programming language. Because of computational limitations, the program can only construct up to k = 10 for d = 9 and k = 12 for d = 11.
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