Judul: Work Motivation and Work-Family Conflict of Formal Working Mothers During the Covid-19 Pandemic
Abstrak: Pandemi Covid-19 menyebabkan adanya kebijakan bekerja dari rumah. Bekerja dari rumah memudarkan batasan antara urusan keluarga dan pekerjaan, serta dapat menurunkan motivasi kerja. Penelitian ini secara umum bertujuan untuk menganalisis pengaruh motivasi kerja terhadap konflik kerja-keluarga ibu pekerja formal selama pandemi Covid-19. Penelitian ini menggunakan desain penelitian cross sectional. Pemilihan lokasi penelitian dipilih secara purposive, yaitu DKI Jakarta dan Jawa Barat. Data diperoleh dengan cara self-administered menggunakan alat bantu kuesioner dalam bentuk link google form yang disebarkan secara online. Teknik pengambilan sampel dilakukan dengan voluntary sampling. Responden dalam penelitian ini adalah 101 ibu pekerja formal dengan keluarga utuh yang memiliki anak usia sekolah (6-12 tahun). Hasil penelitian menunjukkan bahwa ada hubungan positif signifikan antara lama pendidikan dengan motivasi ekstrinsik. Usia istri, usia anak, lama menikah, dan pengalaman kerja memiliki hubungan negatif signifikan dengan konflik kerja-keluarga. Hasil penelitian juga menunjukkan bahwa motivasi intrinsik memiliki hubungan dan pengaruh negatif dan signifikan terhadap konflik kerja-keluarga., The Covid-19 pandemic has led to a policy of working from home. Working from home blurs the line between family and work, and can reduce work motivation. This study generally aims to analyze the effect of work motivation on work-family conflicts of formal working mothers during the Covid-19 pandemic. This study used a cross sectional research design. The research location was chosen purposively, namely DKI Jakarta and West Java. The data was obtained through self-administered using a questionnaire tool in the form of a google form link which was distributed online. The sampling technique was done by voluntary sampling. Respondents in this study were 101 formal working mothers with intact families who have school-age children (6-12 years). The results showed that there was a significant positive relationship between length of education and extrinsic motivation. Age of wife, age of children, length of marriage, and work experience have a significant negative relationship with work-family conflict. The results also show that intrinsic motivation has a negative and significant relationship and influence on work-family conflict.
Keyword: Covid-19 pandemic, Formal workers, Work-family conflict, Work from home, Work motivation

Judul: Work-Family Conflict, Family Interactions, and Marital Quality in Dual Earner Families During The COVID-19 Pandemic
Abstrak: Adanya pandemi COVID-19 mengakibatkan munculnya kebijakan work from home (WFH). Kebijakan WFH dapat menghilangkan batasan antara kehidupan pekerjaan dan keluarga sehingga konflik kerja-keluarga rentan muncul terutama di kalangan suami-istri bekerja. Interaksi keluarga yang baik dapat menjadi salah satu mediator bagi pasangan yang mengalami tingkat konflik kerja-keluarga yang tinggi. Penelitian ini bertujuan untuk menganalisis pengaruh konflik kerja-keluarga dan interaksi keluarga terhadap kualitas perkawinan keluarga suami-istri bekerja di masa pandemi COVID-19. Responden penelitian berjumlah 65 keluarga dengan kriteria istri bekerja di sektor formal dan memiliki anak usia sekolah. Penelitian berlokasi di Kota Bogor dengan menggunakan desain penelitian cross sectional study. Metode yang digunakan adalah metode self administered dengan alat bantu kuesioner online. Hasil penelitian menunjukkan bahwa selama masa pandemi COVID-19, konflik kerja-keluarga yang dialami rendah, interaksi keluarga berada pada kategori sedang, dan kualitas perkawinan yang dimiliki tinggi. Hasil penelitian menunjukkan bahwa terdapat hubungan negatif signifikan antara pendidikan suami, lama menikah, interaksi keluarga, dan kualitas perkawinan dengan konflik kerja-keluarga. Hasil uji regresi menunjukkan bahwa kualitas perkawinan dipengaruhi secara positif signifikan oleh lama menikah dan secara negatif signifikan oleh konflik kerja-keluarga., The existence COVID-19 pandemic resulted in the emergence of a work from home (WFH) policy. Thus can remove the boundaries between work and family life, with the result that work-family conflicts emerge, especially among dual earner families. Good family interaction can be a mediator for couples who experience high levels of work-family conflict. This study aims to analyze the effect of work-family conflict and family interaction towards marital quality of dual earners family during the COVID-19 pandemic. Respondents in this study amounted to 65 people with the criteria of wife who works in the formal sector and has school-aged children. The study was located in the city of Bogor using a cross sectional study design. The method used in this study is the self administered method with an online questionnaire. The result showed that during the COVID-19 pandemic, work-family conflict experienced was low, family interactions were in the medium category, and the marital quality was high. Also, there is a significant negative relationship between husband’s education, duration of marriage, famliy interaction, and marital quality, with the work-family conflict. The regression test results show that marital quality was positively influenced by duration of marriage and negatively influenced by work-family conflict.
Keyword: work-family conflict, work-family conflict, COVID-19 pandemic, dual-earner families,  family interaction, marital quality, work-family conflict

Judul: The Construction of Greedy SVP LLL Algorithm
Abstrak: A lattice is a set of all integer linear combination of a set of linearly independent vectors in ℝ𝑛���. The independent vectors are called bases of lattice. Any lattice can be generated from many bases, and these bases have the same cardinality. In the lattice, the most fundamental and renowned problem is the Shortest Vector Problem (SVP). SVP is a tracking problem of the shortest nonzero vector in a lattice with equivalent bases. In two dimensions, SVP problem has resolved exactly by Gauss’ algorithm. When the lattice dimension is higher than two, A.K. Lenstra, H.W. Lenstra and L. Lovasz gave a LLL algorithm to compute approximation of nonzero shortest vector in the lattice. Reduced bases solution obtained from LLL algorithm still be an approximation and has polynomial running time of arbitrary dimension which large enough. In 1994, Schnoor and Euchner modified this LLL algorithm as a new variant which later was named deep insertion LLL algorithm. This algorithm is a modified version of the LLL algorithm to the terms of the exchange step to improve the accuracy of output of LLL reduced bases and applying it to the subset sum problem. The purpose of this research are: (1) Reconstruct the LLL algorithm and deep insertion LLL algorithm using a geometric approach. (2) Construct a greedy SVP LLL algorithm. (3) Implement the three algorithms in a symbolic programming language, and evaluate them experimentally. A bases ℬ=[𝐛���1,𝐛���2,…,𝐛���𝑛���] in ℝ𝑚��� is called reduced LLL with parameter 𝛿��� if satisfies: (a) |𝜇���𝑗���𝑖���|≤12, for every integer 𝑖���,𝑗��� with 1≤𝑖���<𝑗���<𝑛���. (b)𝛿���‖𝜋���𝑗���(𝐛���𝑗���)‖2≤‖𝜋���𝑗���(𝐛���𝑗���+1)‖2, for 𝑗���=1,2,…,𝑛���−1,where 𝛿��� is a reduced parameter of real numbers with 14<𝛿���<1. The first requirement is the reduced basis 𝛿��� must “nearly orthogonal” and in its computation case, this requirement can be reached out by using the Gram-Schmidt’s orthogonalization. While the second requirement is called exchange step, or used to called as Lovasz condition. By using both of these requirements, then they establish the LLL algorithm. Then, Schnoor and Euchner modify the LLL algorithm based on the requirements of the exchange step called the deep insertion LLL algorithm, where the exchange step is based on the comparison of the projected vector in orthogonal complement [𝐛���1,𝐛���2,…,𝐛���𝑘���−1]⊥ after j-th reduction. To construct greedy SVP LLL algorithm, the requirements of the exchange step is based on purely by comparing norm of lattice 𝐛���𝑗��� with norm lattice 𝐛���𝑖��� for 𝑖���=1,2,3…,𝑗���−1. The process of insertion reduced vector after the exchange step also has done greedily. Then, we calculate the number of arithmetic operation in greedy SVP LLL algorithm for further analysis. The result of our exprimentation for three algorithms on the certain matrix size shows that the running time of the three algorithms increases propotional to the size of the matrix. The result also shows that by using 𝛿���=34 for the LLL algorithm and the deep insertion LLL algorithm, and the greedy SVP LLL algorithm which is a new variant made by using no parameter of 𝛿���, outperform of the other of two previous algorithm in terms of speed with the same output.
Keyword: LLL algorithm, LLL deep insertion algorithm, greedy SVP LLL algorithm