Judul: Perancangan Kemasan Transportasi Buah Jambu Air (Syzygium aqueum (Burm.f.) Alston) cv Camplong
Abstrak: Jamboo cv Camplong, called water rose, is one of the East Java’s superior fruits from Madura that have the high economic values and consumed as fresh fruit. It is including most perishable comodities and having short shelf life and also suspectible with impact and friction during transportation. Therefore the packaging technology during transportation becomes a critical point of post-harvest to maintain freshness of products when it is distributed to consumers. The purposes of this research were designing a secondary packaging during transportation and determining the appropriate type of primary packaging to maintain the quality of Jamboo. Materials in this reasearch were two types of corrugated cardboard (BC flute for packaging and A flute for partition) and jamboo cv camplong (weight 90 - 110 grams, diameter 60 mm and height 55 mm) from the Tadden village, Sampang East Java. The physical and mechanical properties of the fruits, and also the efficiency of the container space were being concerned to decide. The first step of packaging design. Secondary packaging design was done with determined dimensions, models, efficiency and manufacturing steps of packaging. The second step was done with tested of the package that has been designed, esspecially compression strength. For the third steps, the jamboo cv camplong was transported with net foam and paper packing filler (primer). After transportation process, fruits damage were observed visually and stored at room temperature ± 27 ºC. Then the color quality, hardness, total soluble solids, and amount of rotten fruits were observed every day during the time. Result of the packaging design (partitioned and unpartitioned) was having dimension 57x217x216 mm, with capacity of 45 pieces of fruits (equivalent to 4.5 kg) for partitioned packaging design and 69 pieces of fruits (equivalent to 7 kg) for unpartitioned packaging design. The strength of packaging resulted about 258.59 kgf (partitioned packaging design) and 401.92 kgf (unpartitioned packaging design) for pressure resist. Fruits that were packed with partitioned packing using net foam filler material had lowest mechanical damage (about 5.02 %), while the highest mechanical damage of fruits happened in the farmers packaging design (about 20.87 %) after transportation process. Statistical analysis showed that the influence of the primary packaging net foam / paper was significantly different, there are for color, hardness, total dissolved solids and total rotten fruits during storage after transportation. By using this designed packaging could give a net profit of about IDR 300.000 – 600.000 and it was greater than the conventional farmer’s packaging, by maximizing the container space during transportation.
Keyword: Jamboo cv Camplong, packaging, transportation

Judul: Rancangan Kemasan Karton Bergelombang Double Flute untuk Transportasi Buah Belimbing (Averrhoa Carambola L) Varietas Dewi
Abstrak: Star fruit packaging commonly use fruit basket during transportation and stacked usually, whereas it could make mechanical damages to star fruit, like bruised, scratch, and broke on star fruit because it has soft texture. Therefore it needs more special treatment after harvest to reduce the damage during transportation and distribution. The purpose of this research is design a packaging for transportation and distribution on star fruit which the main material are star fruit and corrugated double flute. The steps of this research are designing packaging, compression strength testing and the spread of temperature in cold storage, selecting the packaging, and simulation of transportation. Design process produce four packaging design, that was: the first design with capacity of 24 fruits per package with circle ventilation (K24CV) and with oblong ventilation (K24OV) has dimensions 30 x 23 x 32 cm, then the second design with capacity of 40 fruits with circle ventilation (K40CV) and with oblong ventilation (K40OV) has dimensions 37 x 30 x 32 cm. The material of packaging design used BC flute for primary packaging (outer) and used B flute for secondary packaging (inner). K40CV was a selected packaging based on the testing during research when has average ability to resist compression about 272.32 kgf and more adaptable in cold storage than other packaging design when enter the minute of 130 it has a stable which the different temperature from each other point in the packaging is about 0.15-0.4ºC
Keyword: 

Judul: Penentuan Nilai Eigen dan Vektor Eigen dari Matriks Tridiagonal 2-Toeplitz dengan Pendekatan Polinomial Chebyshev
Abstrak: The eigenvalues and eigenvectors of a matrix can be determined by finding its characteristic polynomials. The characteristic polynomials of a tridiagonal 2-Toeplitz matrix is shown to be closely connected to polynomials which satisfy the Chebyshev recurrence relationship. If the order of the matrix is odd, then the eigenvalues are found explicitly in terms of the Chebyshev zeros and the eigenvectors are found in terms of the polynomials satisfying the recurrence relationship. For even ordered matrices, the situation is more complicated. The problem in these cases is that although the Chebyshev recurrence formula is still applied, its initial values are not generating Chebyshev polynomials
Keyword: