Judul: Analisis Beban Tangan pada Layout Keyboard QWERTY Berdasarkan Letter Frequency pada Dokumen Skripsi Mahasiswa FMIPA IPB
Abstrak: Papan ketik atau keyboard merupakan perangkat masukan pada komputer. Salah satu yang umum digunakan yaitu keyboard dengan layout QWERTY. Penempatan karakter alfabet pada layout keyboard disusun berdasarkan letter frequency. Penempatan karakter alfabet akan berpengaruh pada beban tangan saat mengetik. Beban tangan yang tidak seimbang antara tangan kanan dan kiri akan mengakibatkan rasa tidak nyaman bahkan cedera pada tangan. Penelitian ini bertujuan untuk mengetahui perbandingan beban tangan antara tangan kanan dan kiri berdasarkan letter frequency, mengetahui pengelompokan karakter alfabet dengan letter frequency tinggi pada tangan kanan dan kiri, serta mengetahui tebaran hotspot karakter alfabet pada layout keyboard QWERTY berdasarkan letter frequency pada dokumen skripsi mahasiswa Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA) Institut Pertanian Bogor (IPB). Metode yang digunakan yaitu cluster analysis dan hotspot analysis dengan teknik penarikan contoh menggunakan stratified sampling. Hasil analisis beban tangan diperoleh nilai selisih persentase beban tangan pada Strata 1, 2, dan 3 bernilai negatif menunjukkan beban tangan kiri lebih besar dibandingkan beban tangan kanan. Jumlah gerombol optimum yang terbentuk pada Strata 1, 2, dan 3 sebanyak 4 gerombol. Penggerombolan karakter alfabet dengan letter frequency tinggi pada tangan kanan dan kiri relatif seimbang. Teridentifikasi adanya hotspot pada taraf nyata 5%., Keyboard is an input device on the computer. One of the commonly used is a keyboard with a QWERTY layout. The placement of alphabetic characters on the keyboard layout is arranged based on the letter frequency. The placement of alphabetic characters will affect the hand load when typing on the keyboard. An unbalanced hand load between the right and left hands will cause discomfort and even injury to the hand. This study aims to determine the comparison of the hand load between the right and left hands based on letter frequency, to determine the grouping of alphabetic characters with high letter frequency on the right and left hands, and to find out the distribution of alphabetic character hotspot on the QWERTY keyboard layout based on letter frequency on student undergraduate thesis document of Faculty of Mathematics and Natural Sciences (FMIPA) IPB University (IPB). The methods used in this research are cluster analysis and hotspot analysis with sampling technique using stratified sampling. The result of the hand load analysis obtained the value of the difference in the percentage of hand load in Strata 1, 2, and 3 negative values showed that the left hand load is greater than the right hand load. The optimum number of clusters formed in Strata 1, 2, and 3 is 4 clusters. The clusters of alphabetic characters with high letter frequency on the right and left hand are relatively balanced. It is identified that there are hotspot at a significance level of 5%.
Keyword: analisis gerombol, analisis hotspot, frekuensi huruf, papan ketik qwerty, penarikan contoh berlapis, cluster analysis, hotspot analysis, letter frequency, qwerty keyboard, stratified sampling

Judul: Frequency Of People With Left-Handed Preference And Their Creativity In Bogor West Java
Abstrak: Setiap manusia lebih menyukai menggunakan salah satu tangan dari pada tangan lainnya. Kebiasaan penggunaan tangan ini dipengaruhi oleh faktor genetik, pertumbuhan dan perkembangan, dan faktor lingkungan. Kurang lebih 10% dari manusia berpreferensi kidal. Mayoritas aktivitas manual dapat diklasifikasikan menjadi ketelitian dan kekuatan tangan. Namun, masih belum ada penelitian mengenai ketelitian dan kekuatan tangan pada orang kidal. Beberapa peneliti menyimpulkan bahwa struktur otak orang kidal memiliki corpus callosum yang lebih besar. Maka dari itu, diprediksikan bahwa kesuksesan orang kidal mencerminkan cara berfikir divergen mereka yang superior. Subjek penelitian ini berjumlah 267 pelajar perempuan dan 226 pelajar laki-laki di Bogor, Jawa Barat. Rentang umur dari subjek yaitu dari umur 6 tahun sampai umur 21 tahun. Preferensi tangan responden diuji dengan metode Rife, uji ketelitian tangan, dan uji kekuatan tangan. Responden juga diukur kreativitasnya dengan daftar kata sifat. Otak laki-laki terpapar testosteron yang lebih tinggi daripada otak perempuan saat perkembangan janin, sehingga diduga ada efek jenis kelamin terhadap kebiasaan penggunaan tangan. Frekuensi total orang kidal 7.3%. Persentase kreativitas orang yang tidak kidal baik perempuan maupun laki-laki tidak berbeda, sedangkan iv persentase kreativitas perempuan kidal lebih tinggi daripada laki-laki kidal. Dampak aktivitas dan lingkungan bagi kreativitas didiskusikan.
Keyword: Bogor, penggunaan tangan, kidal, kreativitas

Judul: Induction of Gonad Maturation, Ovulation and Spawn in Torsoro (Tor soro) used Hormon Combination
Abstrak: Torsoro fish populations continue to decline due to overfishing and habitat destruction on the natural environment. Artificial breeding of fish has to do with hormonal stimulation, but the results are not optimal. The purpose of this study was to manipulate the reproduction of fish Torsoro through induction of gonadal maturation, ovulation, and spawning to increase the success of artificial breeding. Research on the induction of gonadal maturation performed by Oodev.Oodev containing PMSG and antidopamin that functions as a hormone regulator that works to stimulate the target organs (hypothalamic-pituitary-gonadal) for the initial development of the gonads. Induction of final maturation (final maturation) and spawning is done by using some hormones and their combinations; sGnRH (D-Arg6, Trp7, Leu8, Pro9Net)-LH-RH and 10 mg of domperidone (ovaprim), aromatase inhibitors and oytocin. Females Torsoro size 750-800 grams / fish, injected with oodev 0 ml, 0.5 ml oodev, oodev 1 ml, 1.5 ml oodev for induction of maturation. Fish injected every week for 5 weeks. Furthermore, female of Torsoro which is maturating gonads were injected with a combination of hormones that is ovaprim 0.5 ml / kg of fish, ovaprim 0.25 ml / kg of fish + HCG 500 IU / kg fish, ovaprim 0.25 ml / kg + 0.25 mg AI / kg; AI 0.50 mg / kg + 0.5 IU oxytocin (spawnprim) for final gonadal maturation and spawning of fish. The results showed that the injection of 1 ml Oodev give the best results in inducing gonadal maturation among other treatments. Injection with 1 ml oodev can induce the fish to mature gonads as much as 60%, with higher levels of estradiol-17ß as much as 102.12 ± 21.6 ng / ml, egg diameter of 3 mm. The best results showed that ovulation induction treatment combination of AI 0.50 mg/kg + 0.5 IU oxytocin (spawnprime) has a latency period of the fastest in stimulating ovulation 17.5 ± 0.52 h; fertilization rate of 96.60 ± 0.12%; hatching rate 81.05 ± 0.19%, and the survival rate of larvae reached 98.88 ± 0.41%. The results indicate that AI 0.50 mg / kg + 0.5 IU oxytocin (spawnprime) is the best hormone combination in inducing ovulation and spawning to semi-natural (spawning without stripping) on Torsoro. Induction of maturation of the gonads can be done by injecting Torsoro with Oodev that can induce axis hypothalamus-pituitary-gonads for vitellogenesis process through increased plasma estradiol that causes gonadal maturation in female fish. whereas, Spawnprim able to induce more effective for the final maturation of the gonads, which includes ovulation and spawning and reproductive performance are better than the results obtained ovaprim. Spawnprim also able to induce spawning reflex so that the fish can spawn with a semi-natural way (without stripping). The success in the induction of maturation by using Oodev, and also in the induction of ovulation and spawning by using Spawnprim, provide great opportunities to increase production of seed in artificial breeding Torsoro.
Keyword: maturation, ovulation, spawnprime, Torsoro