Judul: Social Networking Sites (SNS) and Empathy Among Adolescents in Indonesia
Abstrak: Social networking sites (SNSs) have increased in number and popularity for more than a decade especially for adolescents. Previous studies conducted in western countries have stated that using SNSs could exert positive and negative effects on various aspects of psychosocial development, one of which is empathy. Empathy is the ability to put yourself in someone else's shoes both emotionally and cognitively. Empathy is divided into 2 components, namely cognitive empathy described as a cognitive role-taking ability or the capacity to engage in the cognitive process of adopting another’s psychological point of view, and affective empathy referring to the recognition of other people's emotions or feelings. Empathy plays a vital role in developing social behavior in adolescents. It is frequently considered the social glue in peer interactions. During adolescence, at a time when developing intimate, meaningful relationships with peers is one of the critical developmental goals, empathy helps one to relate to other people, and learning to empathize is essential. The relationship between SNSs use and empathy has remained unclear, especially in Indonesia. Therefore, the present study aims to determine the relationship between SNSs and empathy on adolescents in Indonesia. This study recruited 1,638 students from junior and senior high school with ages ranging from 12 to 19 years randomly across several provinces in Indonesia. Data collection was carried out by administering online questionnaires to participants consists of four sections; the first section is the introductory page, informing participants about the study and informed consent. The second section asked about demographic data. The third section asked the intensity of SNSs use during the last week with the Social Networking Time Use Scale (SONTUS) method, and last section asked the questions about empathy with the Adolescent Measure of Empathy and Sympathy (AMES) method. In order to assess the associate of empathy with use of social networking sites (SNSs) and demographic data, the Censored Regression Model (censReg) analysis was applied. Our result showed that SNSs significantly positively correlated with cognitive empathy, affective empathy, and sympathy among adolescents in Indonesia, which is similar to previous studies, so this may be a general pattern in adolescence. The connections made by SNSs is believed to increase feelings of humanity (sympathy) and also empathy to other humans. The levels of empathy among female students were higher than those of male students. It may be that female students can better recognize emotions, understand, and share other people's feelings, which facilitates empathy.
Keyword: adolescents, empathy, Indonesia, social networking sites, sympathy

Judul: Loneliness and Problematic Internet Use of Adolescent during the Covid-19 Pandemic: The Role of Social Support and Interpersonal Competence
Abstrak: Pada masa pandemi Covid-19, tingkat kesepian dan penggunaan internet remaja semakin meningkat. Hal ini dapat menimbulkan perilaku penggunaan internet bermasalah. Penelitian ini bertujuan untuk menganalisis peran dukungan sosial dan kemampuan interpersonal terhadap kesepian dan penggunaan internet bermasalah. Penelitian ini menggunakan desain ekplanatori dan berlokasi di Kabupaten Bogor. Sebanyak 247 partisipan yang terlibat dalam penelitian ini. Pengambilan data dilakukan menggunakan kuesioner secara online. Data dianalisis secara dekskriptif dan uji korelasi serta regresi menggunakan aplikasi SPSS versi 25.0. Hasil menunjukkan bahwa jenis kelamin berhubungan dengan kesepian, dukungan sosial dan kemampuan interpersonal berhubungan dengan kesepian dan penggunaan internet bermasalah. Hasil uji pengaruh menemukan bahwa dukungan sosial dan kemampuan interpersonal berpengaruh negatif signifikan terhadap kesepian serta kesepian berpengaruh positif signifikan terhadap penggunaan internet bermasalah. Remaja dapat meningkatkan kemampuan interpersonal dan dukungan sosial dengan cara memperbanyak interaksi positif dengan lingkungan, During the Covid-19 pandemic, youth levels of loneliness and internet use are growing. This can lead to problematic internet usage behavior. This study aims to analyze the role of social support and interpersonal skills on loneliness and problematic internet use. This study uses an explanatory design and is located in Bogor Regency. A total of 247 participants were involved in this study. Data collection was carried out using an online questionnaire. The data were analyzed descriptively, as well as correlation and regression tests using the SPSS version 25.0 application. The results showed that gender was associated with loneliness, social support and interpersonal skills were associated with loneliness and problematic internet use. The results of the influence test found that social support and interpersonal skills had a significant negative effect on loneliness and loneliness had a significant positive effect on problematic internet use. Adolescents can improve interpersonal skills and social support by increasing positive interactions with the environment.
Keyword: penggunaan internet bermasalah, kesepian, kemampuan interpersonal, dukungan sosial

Judul: Closed Knight’s Tour pada Papan Catur Berbentuk Persegi Panjang dengan Ukuran Maksimal 8 × 8
Abstrak: Closed Knight’s Tour merupakan langkah kuda yang mengunjungi setiap kotak pada papan catur tepat satu kali dengan langkah kuda berawal dan berakhir pada kotak yang sama. Graf yang terbentuk dari closed knight’s tour dinotasikan sebagai graf G(m,n), dengan m adalah banyaknya baris dan n adalah banyaknya kolom. Graf tersebut memuat Hamiltonian cycle. Sebuah graf terhubung G adalah graf bipartite jika dan hanya jika graf tersebut tidak memiliki cycle dengan panjang ganjil. Papan catur yang memenuhi syarat cukup untuk memiliki closed knight’s tour adalah papan catur berukuran 5 × 6, 5 × 8, 6 × 6, 6 × 7, 6 × 8, 7 × 8, dan 8 × 8.
Keyword: bipartite, closed knight’s tour, hamiltonian cycle, knight’s tour, teori graf