Judul: Analisis CART Ketepatan Waktu Lulus Berdasarkan Karakteristik Mahasiswa di FEM dan FAPERTA
Abstrak: Graduate on time is one of the indicators of a student’s success in obtaining their undergraduate degrees. Previous study using CHAID (Chi-Squared Automatic Interaction Detection) method concluded that the highest probability classification for the IPB students who graduated on time comes from FEM and the lowest probability classification comes from FAPERTA. According to that, the purpose of this research is to identify the student’s characteristics as an indicator of the timeliness pass from the faculty with highest and lowest number of students who graduated on time using CART method. Tree classification of FEM classifies the characteristics of the highest students that graduated on time by 75% as the students from Departements of IE and MAN. Tree classification of FAPERTA classifies the characteristics of the highest students that graduated on time by 26.1% as the students from Departements of AGH and PTN and have GPA greater than 3.335. The classification tree of FAPERTA is better to estimate students who graduated on time with accuracy value 81.47% and the classification tree of FEM is better to estimate students who didn’t graduate on time with accuracy value 71.4%.
Keyword: CHAID, CART, tree classification

Judul: Identification of Factors that Affecting the Timeliness of Graduation in FMIPA IPB Class of 2017 Student
Abstrak: Tingkat kelulusan mahasiswa tepat waktu menjadi salah satu kriteria penilaian akreditasi bagi suatu perguruan tinggi atau program studi, semakin banyak mahasiswa yang lulus tepat waktu maka semakin baik pula kinerjanya. Akan tetapi, berdasarkan data lulusan dari DAPPMB IPB, hanya sekitar 37,46% mahasiswa FMIPA angkatan 2016 yang dapat menyelesaikan studi tepat waktu. Data yang digunakan pada penelitian ini berasal dari DAPPMB IPB. Faktor- faktor yang diduga dapat mempengaruhi ketepatan waktu lulus diantaranya adalah jenis kelamin, asal daerah, minor, program studi, jalur masuk, IPK terakhir, dan kestabilan prestasi. Untuk menganalisis faktor-faktor yang berpengaruh terhadap kelulusan mahasiswa digunakan analisis regresi logistik biner menggunakan regresi stepwise dan 10-fold cross validation. Berdasarkan penelitian ini, faktor-faktor yang memengaruhi ketepatan waktu lulus mahasiswa FMIPA IPB angkatan 2017 adalah program studi, minor, IPK terakhir, dan kestabilan prestasi. Model regresi logistik biner yang diperoleh menghasilkan nilai akurasi sebesar 66,75%, sensitivitas 32,65%, spesifisitas 90,69%, dan AUC sebesar 0,75., The graduation timeliness rate of student is one of the criteria for accreditation assessment for a university or study program, the more students who graduate on time, the more better the performance. However, based on graduate’s data from DAPPMB IPB, only around 37.46% of FMIPA students, class of 2016, that can complete their studies on time. The data used in this research is from DAPPMB IPB. Factors that are suspected affect the timeliness of graduation include gender, regional origin, minor, study program, entrance pathway, the last GPA, and the stability of achievement. Binary logistic regression with stepwise regression and 10-fold cross validation was used to analyze factors that affecting student graduation. Based on this research, factors that affect the timeliness of graduation in FMIPA IPB class of 2017 student are study program, minor, the last GPA, and the stability of achievement. The binary logistic regression modeling results show that the accuracy value is 66,75%, sensitivity 32,65%, specificity 90,69%, and an AUC 0,75.
Keyword: binary logistic regression, graduation factors, student graduation

Judul: Ornithonyssus Bursa (Berlese, 1888) Famili Macronyssidae yang Menyerang Unggas Dan Penaggulangannnya
Abstrak: Ornithonyssus bursa adalah tungau penghisap darah pada unggas di daerah tropis dan subtropis. Tungau ini relatif kecil, dengan panjang tubuh antara 700-1000 mikron dan lebarnya 250-490 mikron. Tubuhnya bulat berwarna coklat kekuningan sebelum menghisap darh dan berwarna merah setelah menghisap darah dari induk semangnya.
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