Judul: The Analysis of Job Satisfaction’s Dimension towards Organizational Citizenship Behavior at PT Primajasa Perdanaraya
Abstrak: Pandemi COVID-19 ikut memberikan dampak negatif kepada PT Primajasa Perdanarayautama ditandai dengan menurunnya kepuasan kerja dan perilaku Organizational Citizenship Behavior (OCB) karyawan. Pandemi ini juga memaksa karyawan untuk terus meningkatkan kinerja mereka, maka dari itu perusahaan perlu memperhatikan kepuasan kerja dan perilaku OCB karyawan agar kinerja perusahaan meningkat. Penelitian ini bertujuan untuk (1) menganalisis persepsi karyawan terhadap kepuasan kerja dan OCB saat sebelum dan setelah ada COVID-19, (2) menganalisis perbedaan kepuasan kerja dan OCB saat sebelum dan setelah ada COVID-19, (3) menganalisis pengaruh kepuasan kerja dan OCB saat sebelum dan setelah ada COVID-19. Metode penarikan sampel menggunakan nonprobability sampling dengan jumlah responden sebanyak 39 orang . Penelitian ini menggunakan data primer dan sekunder. Metode pengolahan dan analisis data yang digunakan adalah uji wilcoxon dan analisis regresi linear berganda dengan bantuan aplikasi Microsoft Excel dan SPSS. Hasil penelitian menunjukkan bahwa terdapat perbedaan pada dimensi kepuasan kerja dan OCB saat sebelum dan setelah ada COVID-19. Selain itu, baik saat sebelum dan setelah ada COVID-19 dimensi kepuasan kerja secara simultan berpengaruh terhadap OCB, namun secara parsial saat sebelum ada COVID-19 variabel yang memberikan pengaruh positif dan signifikan adalah pekerjaan itu sendiri (X1), kompensasi (X2), promosi (X3), rekan kerja (X5), dan kondisi kerja (X6). Sedangkan pada saat setelah ada COVID-19, variabel yang memberikan pengaruh positif dan signifikan adalah kompensasi (X2), dan kondisi kerja (X6)., The COVID-19 pandemic also had an impact on PT Primajasa Perdanarayautama, marked by reduced on job satisfaction and employee Organizational Citizenship Behavior (OCB). This pandemic also forces employees to continue to improve their performance, therefore companies need to pay attention to job satisfaction and OCB so that company performance increases. This study aims to (1) analyze employee perceptions of job satisfaction and OCB before and after COVID-19, (2) analyze differences in job satisfaction and OCB before and after COVID-19, (3) analyze the effect of job satisfaction and OCB before and after COVID-19. The sampling method uses nonprobability sampling with 39 total respondents. This study uses primary and secondary data. Data processing and analysis methods used are Wilcoxon test and multiple linear regression analysis with the help of Microsoft Excel and SPSS applications. The results showed that there were differences in the dimensions of job satisfaction and OCB before and after COVID-19. In addition, both before and after COVID-19, the dimensions of job satisfaction simultaneously affected OCB, but partially before there was COVID-19 the variables that had a positive and significant effect were work itself (X1), compensation (X2), promotions (X3), coworkers (X5), and working conditions (X6). Meanwhile, prior to COVID-19, the variables that had a positive and significant effect were compensation (X2) and working conditions (X6).
Keyword: COVID-19, job satisfaction, OCB

Judul: Job Stress, Organizational Climate, and Employee Performance at BPJS Ketenagakerjaan Bogor Cileungsi during the Covid-19 Pandemic
Abstrak: Pandemi Covid-19 menyebabkan karyawan harus beradaptasi dengan kebiasaan baru mereka dalam bekerja. BPJS Ketengakerjaan Bogor Cileungsi, badan yang memfasilitasi layanan kepesertaan bagi tenaga kerja dan perusahaan, menetapkan kebijakan bekerja dengan kombinasi work from home (WFH) dan work from office (WFO) pada situasi ini. Kebijakan baru ini dapat memengaruhi kinerja karyawan. Penelitian ini bertujuan untuk menganalisis pengaruh stres kerja dan iklim organisasi terhadap kinerja karyawan. Metode penarikan sampel menggunakan sampling jenuh dengan responden sebanyak 38 orang. Penelitian ini menggunakan analisis deskriptif dan SEM-PLS. Hasil penelitian menunjukkan bahwa stres kerja berpengaruh negatif dan tidak signifikan terhadap kinerja karyawan. Iklim organisasi berpengaruh positif dan signifikan terhadap kinerja karyawan. Hal ini menunjukkan bahwa semakin baik iklim organisasi, maka semakin meningkat kinerja karyawan. Namun, iklim organisasi tidak memoderasi pengaruh stres kerja terhadap kinerja karyawan. Berdasarkan hasil penelitian, perusahaan perlu mempertahankan atau bahkan meningkatkan iklim organisasi, terutama komitmen karyawan karena memiliki pengaruh besar terhadap peningkatan kinerja karyawan di BPJS Ketenagakerjaan Bogor Cileungsi selama pandemi Covid-19., The Covid-19 pandemic has caused the employee to adapt to their new habits at work. BPJS ketenagakerjaan Bogor Ciluengsi, an agency that facilitates participation services for workers and the company, establishes a working policy with a combination of work from home (WFH) and work from office (WFO) in this situation. This new policy can affect employee performance. This study aims to analyze the effect of job stress and organizational climate on employee performance. The sampling method used a saturation sampling with 38 respondents. The study uses descriptive analysis and SEM-PLS. The results showed that job stress has a negative and insignificant effect on employee performance. Organizational climate has a positif and significant effect on employee performance. This shows that the better the organizational climate, the higher the employee’s performance. However, organizational climate does not moderate the effect of job stress on employee performance. Based on the research results, companies need to maintain or even improve organizational climate, especially employee commitment because it has a major influence on improving employee performance at BPJS Ketenagakerjaan Bogor Cileungsi during the Covid-19 pandemic.
Keyword: Covid-19 pandemic, employee performance, job stress, organizational climate

Judul: Hamiltonian formulation for linear waves motion in two layers fluid
Abstrak: The surface wave could be considered as a wave that separates two fluids, namely water and air. Based on this assumption, it is introduced the interfacial wave, a wave between two layers of fluid with different density. The formulation of interfacial waves motion begins with deriving the base equation of irrotational ideal fluid. Furthermore, according to irrotational fluid assumption, the base equation can be stated in velocity potential. In this derivation, the fluids domain is assumed to be restricted by rigid lid boundary conditions, both at the upper and lower limit. Therefore, the interfacial waves motion can be explained in a hamiltonian formulation. In the hamiltonian formulation, total energy is defined as the sum of kinetic and potential energy. The hamiltonian system is obtained from reduction of kinetic energy by using the Dirichlet Neumann Operator. The resulted kinetic energy equation is nonlinear. Therefore, this form is linearized by first part of the Taylor expansion. This linearization gives a dispersion relation of linear wave. Based on this dispersion relation, the phase speed of the linear wave depends on the density ratio of the two layers fluid.
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