Judul: Penerapan Metode CHAID dalam Mengetahui Faktor-Faktor Berpengaruh pada Orientasi  Fesyen Mahasiswa Perempuan (Studi Kasus: Mahasiswi S1 IPB Angkatan 54–57)
Abstrak: Fesyen atau mode merupakan suatu corak yang secara populer diterima oleh sekelompok orang dalam waktu yang cukup lama. Sebagai salah satu subsektor Ekonomi Kreatif Indonesia, fesyen berkontribusi besar bagi perekonomian Indonesia karena sumbangsihnya terhadap pendapatan nasional dan juga nilai ekspor pada tahun 2016. Adanya pandemi yang masuk ke Indonesia sejak Maret 2020 memberi dampak besar pada sektor ekonomi secara global, tak terkecuali industri fesyen. Penelitian ini bertujuan mengidentifikasi perilaku belanja dan karakteristik yang berpengaruh terhadap orientasi fesyen mahasiswi S1 IPB pada awal masa pandemi. Data yang digunakan adalah data primer hasil survei terhadap mahasiswi aktif program sarjana IPB angkatan 54–57 dengan metode penarikan contoh non-probability sampling, yaitu purposive sampling dan voluntary sampling. Data pada peubah orientasi fesyen memiliki proporsi kelas yang tidak seimbang sehingga penelitian ini melakukan penanganan data tidak seimbang berupa metode oversampling. Hasil evaluasi model klasifikasi menunjukkan tingkat akurasi sebesar 51.4% dengan nilai sensitivitas sebesar 50.6% dan error rate sebesar 24.3%. Faktor perilaku belanja dan karakteristik yang berpengaruh terhadap orientasi fesyen sebanyak delapan dari 12 peubah, dengan tiga di antaranya adalah frekuensi belanja pakaian, daya beli pakaian, dan asal daerah., Fashion is a pattern that is popularly accepted by a group of people for quite a long time. As one of the sub-sectors of Ekonomi Kreatif Indonesia, fashion made a major contribution to the Indonesian economy because of its contribution to national income and also the value of exports in 2016. The pandemic that has entered Indonesia since March 2020 has had a major impact on the global economic sector, including the fashion industry. This study aims to identify shopping behavior and characteristics that influence the fashion orientation of IPB undergraduate female students at the start of the pandemic. The data used is primary data from a survey of active female students of the IPB undergraduate program batches 54–57 using the non-probability sampling method, namely purposive sampling and voluntary sampling. The data on the fashion orientation variable has unbalanced class proportions, so this study handles unbalanced data in the form of the oversampling method. The evaluation results of the classification model show an accuracy rate of 51.4% with a sensitivity value of 50.6% and an error rate of 24.3%. Eight of twelve variables of shopping behavior and characteristics influence fashion orientation, with three of them being the frequency of shopping for clothes, the purchasing power of clothes, and the region of origin.
Keyword: CHAID, faktor berpengaruh, orientasi fesyen, oversampling, pandemi

Judul: Analysis of Muslim Fashion Purchase Intentions during the Covid-19 Pandemic using Theory Of Planned Behavior (TPB)
Abstrak: Penetapan penyebaran Covid-19 sebagai pandemi oleh WHO pada 12 Maret 2020 yang lalu, mengakibatkan negara-negara di dunia memberlakukan lockdown. Pekerja dan pelajar diimbau untuk bekerja dan belajar dari rumah secara online. Jika diamati, situasi ini rupanya turut mengubah gaya hidup dan pola masyarakat dalam mengkonsumsi barang dan jasa. Penelitian ini bertujuan mengidentifikasi karakteristik responden fashion muslim di masa pandemi Covid-19, menganalisis hubungan dan pengaruh antara sikap, norma subyektif, kontrol perilaku terhadap niat beli fashion muslim di masa pandemi Covid-19. Penelitian ini merupakan penelitian kuantitatif menggunakan desain cross sectional study. Populasi penelitian ini adalah masyarakat Indonesia dengan jumlah responden sebanyak 112 responden. Teknik penarikan contoh dalam penelitian ini menggunakan voluntary sampling. Data dikumpulkan melalui kuesioner online menggunakan google form. Metode analisis data menggunakan analisis regresi linier berganda. Hasil penelitian menunjukkan bahwa proporsi karakteristik responden (usia, jenis kelamin, pendidikan terakhir) berada pada kategori rendah. hubungan karakteristik responden (usia), sikap, norma subjektif dan kontrol perilaku memiliki hubungan positif sangat signifikan dengan niat beli fashion muslim di masa pandemi Covid-19. Hasil analisis regresi linier berganda menunjukkan bahwa terdapat pengaruh positif yang signifikan antara sikap, norma subjektif dan kontrol perilaku terhadap niat beli fashion muslim di masa pandemi Covid-19., The WHO declared the spread of Covid-19 as a pandemic on March 12, 2020, which resulted in countries in the world imposing a lockdown. Workers and students are encouraged to work and study from home online. If observed, this situation seems to have changed the lifestyle and patterns of people in consuming goods and services. This study aims to identify the characteristics of Muslim fashion respondents during the Covid-19 pandemic, analyze the relationship and influence between attitudes, subjective norms, behavioral control on Muslim fashion purchase intentions during the Covid-19 pandemic. This research is a quantitative study using a cross sectional study design. The population of this study is the Indonesian people with a total of 112 respondents. The sampling technique in this study uses voluntary sampling. Data was collected through an online questionnaire using a google form. The data analysis method used multiple linear regression analysis. The results showed that the proportion of respondents' characteristics (age, gender, last education) was in the low category. The relationship between respondent characteristics (age), attitudes, subjective norms and behavioral control has a very significant positive relationship with Muslim fashion purchase intentions during the Covid-19 pandemic. The results of multiple linear regression analysis show that there is a significant positive influence between attitudes, subjective norms and behavioral control on Muslim fashion purchase intentions during the Covid-19 pandemic.
Keyword: Covid-19, intention to buy Muslim fashion, Theory of Planned Behavior (TPB)

Judul: Rancang Bangun Elemen Pemanas Bahan Bakar Minyak Nyamplung Untuk Motor Bakar Diesel dengan Memanfaatkan Panas Gas Buang
Abstrak: Tamanu oil is one of biosolar substituter as diesel engine fuel. High viscosity of tamanu oil becomes main obstacle in direct using of tamanu oil as diesel engine fuel. Heater element is made to decrease tamanu oil viscosity. Heater element is benefitted high temperature of diesel engine exhaust gas as reheating source. Optimum temperature which is needed to reduce tamanu oil viscosity of 3-5 cSt is 110 Celcius degree (biosolar viscosity of 30oC is 5-7 cSt). IV design of element heater has optimum tamanu oil reheating. There are four kind of tamanu oil that has different treatment. degumming neutralization (N4) tamanu oil has best quality with the lowest viscosity of 30cSt in 30oC. Tamanu oil (N4) usage as fuel occur reduction power of 12.26 %, torsion of 9.59 %, power maximum of diesel engine is 5.39 kW and maximum torsion of 123.74 Nm. Maximum power of diesel engine using biosolar is 5.99 kW and maximum torsion of 144.53 Nm. But then, tamanu oil can replace biosolar (fossil energy), without made as biodiesel first and mixed with biosolar.
Keyword: