Judul: Analisis Pengaruh Pemberian Insentif Terhadap Kinerja Karyawan di PT RJW.
Abstrak: Provided incentives for employees gives a considerable impact to the employee’s performance. The objective of this study is to identify the dominant factor of incentives and performance, to analyze the affecting the incentives provision to the performance and to analyze the Spearman correlation of characteristic of respondents to the performance of employees in PT RJW. The methods used in this research is Structural Equation Modeling (SEM) with Partial Least Square (PLS) by using SmartPLS and SPSS software for Spearman correlation analysis. Correlation coefficient from Spearman correlation test (rho) that is close to zero indicates that there is no significant relationship between two test variable and produce  above 5%, which meanssignificant for the age category of the performance indicators. Then the period of employment and education categories to later category to several indicators with  below 5%, which mean sinsignificant for the period of employment and education categories to performance quantity. Chi square contingency analysis result showed no significant relationship between gender with performance. The measurement model evaluation of incentives variable shows that job promotion indicator gives the most significant contribution in shaping performance. The result of structural model evaluation shows that incentives variable has a significant positive impact to performance variable.
Keyword: Chi square contingency, Spearman correlation, Incentives, Performance, Structural Equation Modeling (SEM), Partial Least Square (PLS), SPSS

Judul: Pengaruh Motivasi dan Lingkungan Kerja terhadap Kinerja Karyawan di PT. A
Abstrak: Motivasi dan lingkungan kerja memiliki pengaruh terhadap kinerja karyawan. Penelitian ini telah mengidentifikasi usaha PT. A. untuk memotivasi karyawannya. Tujuan penelitian ini adalah mengetahui indikator dominan dalam motivasi dan lingkungan kerja sebagai variabel bebas, serta kinerja sebagai variabel terikat; dan untuk menganalisa pengaruh motivasi dan lingkungan kerja terhadap kinerja karyawan. Penelitian ini juga mengidentifikasi korelasi karakter responden terhadap kinerja menggunakan Spearman Correlation. Untuk mencapai tujuan tersebut, penelitian ini menggunakan Structural Equation Model (SEM) menggunakan perangkat lunak SmartPLS (Partial Least Square). Berdasarkan evaluasi Spearman Correlation, korelasi antara usia, begitu juga masa kerja, dan kuantitas kerja bernilai negatif (berlawanan arah). Pendidikan memiliki korelasi positif terhadap kualitas dan kuantitas kerja. Berdasarkan perhitungan Chi square contingency, jenis kelamin memiliki korelasi yang sangat lemah terhadap kinerja. Penelitian ini menghasilkan indikator yang paling berkontribusi dalam membentuk tiap variabel: dalam motivasi adalah insentif (dibandingkan terhadap latar belakang sosial, keahlian, dan jenjang karir), dalam lingkungan kerja adalah kepemimpinan (dibandingkan suhu udara, bau, penerangan, dan hubungan antarpekerja), sedangkan dalam kinerja adalah kuantitas kerja (dibandingkan kualitas kerja). Variabel motivasi dan lingkungan kerja berpengaruh positif dan signifikan terhadap kinerja karyawan.
Keyword: Motivasi, Lingkungan Kerja, Kinerja, Structural Equation Modeling (SEM), Partial Least Square (PLS), Korelasi Spearman, Chi square kontingens

Judul: Hydrothermal Synthesis of Biphasic Calcium Posphate
Abstrak: Biphasio calsium phosphate (BCP), which was a mixture of hydroxypatite (HA) and tricalcium phosphate (TCP), was synthesized by hydrothermal method followed by sintering process. Hydroxyapatite was produced by using natural calcium source CaO from hen's eggshell and (NH4)2HPO4 as phosphate souce, other hydroxyapatite sample was produce by using synthetic calcium source Ca(OH) and H3PO4 as phosphate source.
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