Judul: Kapasitas Asimilasi Beban Pencemar Limbah Cair Tahu-Tempe dan Pengaruhnya pada Makroavertebrata Benthik di Sungai Ancar, Nusa Tenggara Barat
Abstrak: Influence entry of organic material exceeding waters assimilative capacity can be seen at physical, chemical and biological water quality. Assessment of the influence of assimilative capacity exceed can using macro invertebrates benthic. The aim of this study are : 1) to know existence, total loading and quality of tofutempe making waste; 2) to know assimilative capacity of Ancar river and 3) to know status contamination of Ancar river with macro invertebrates benthic approach. Station 2, 3 and 4 get waste input from making of tofu-tempe directly. Total maximal pollutant burden from waste equal: BOD (9,10.10-2 ton/day), COD ( 3,58.10-1 ton/day) and TSS (2,54.10-2 ton/day). Measurable waste quality as follows: pH (5-7), BOD (639-3744 mg/l), COD (2283-13893 mg/l) and temperature (30-50 O C). Ancar river status is over capacity, hence concentration of BOD enabling admission is equal to 153,12 mg/l/day. Based on SIGNAL 2, Ancar river is included in medium to weight polluted waters, that marked by decline family number and loss of types benthic in clean waters.
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Judul: Pollution Burden Analysis and Assimilation Capacity of Cidurian River Banten Province
Abstrak: The river has the ability to clean itself of the burden of pollution naturally which is known as the capacity of assimilation. Incoming load exceeds the capacity of assimilation would lead to a decrease in the quality of the river until the river functions decline. This research aims to analyze the water quality of Cidurian River, analyze the contribution of pollution loads entering River Cidurian, and knowing the assimilation capacity of the stream. Research results show that the water quality, starting from the upstream to downstream concentrations of BOD, TSS, COD and E. coli are likely to exceed the standard of quality. Contribution to the total burden of polluters from certain sources (point source) in DAS Cidurian 2,4 tons/month BOD, COD 4,3 tons/month, TSS 2,26 tons/month. The contribution burden of polluters undefinable (non point source) based on the analysis of land use from agricultural sector BOD 206,76 tons/month,TSS 24,13 ton/month, based on the analysis of the population of each sub DAS, domestic sector have 1.374 tons/month of BOD, COD 1.890 tons/month, TSS 1.305 tons/month and E.coli 1,02 E 16 tons/month. Total contribution burden of polluters undefinable (non point source) parameters BOD 1.580 tons/month, COD 1.890 tons/month, TSS 1.324 tons/month, more dominant compared to certain sourced (point source). Capacity of assimilation to the parameters of TSS 22.901,55 tons/month, BOD 2.347,83 tons/month, COD 24.208,33 tons/month, E.coli 424.629,90 tons/month. Overall value of assimilation capacity is smaller compared to the burden of pollution of the river, resulting in the organic matter pollution experienced TSS, BOD, COD and E.coli. The high contribution to the burden of domestic source of polluters and agriculture, as well as the capacity of assimilation to consider in an attempt to control water pollution.
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Judul: Group Operation Algorithm Formulas that Generated by Hyperelliptic Curve y2+xy = x5+x2+x over F297 Field
Abstrak: Kurva hipereliptik adalah kelas spesial dari kurva aljabar dan dapat dipandang sebagai generalisasi kurva eliptik. Pengembangan kurva hipereliptik dapat diterapkan dalam bidang kriptografi kunci publik, seperti dalam pertukaran kunci Diffie-Hellman. Penelitian ini mempunyai tiga tujuan utama. Pertama menganalisa tingkat keamanan kurva hipereliptik y2 +xy = x5 +x2 +x atas lapangan F297 . Kedua membentuk formulasi operasi grup yang dibangkitkan oleh kurva hipereliptik y2+xy = x5+x2+x atas lapangan F297 yang efisien. Ketiga membentuk algoritme operasi grup yang dibangkitkan oleh kurva hipereliptik y2 +xy = x5 +x2 +x atas lapangan F297 . Metode penelitian ini dibagi menjadi lima tahap. Tahap pertama menganalisa keamanan kurva hipereliptik y2+xy = x5+x2+x atas lapangan F297 . Tahap kedua membentuk formulasi operasi ganda efisien dari grup yang dibangkitkan oleh kurva hipereliptik y2 +xy = x5 +x2 +x atas lapangan F297 . Tahap ketiga membuat formulasi operasi adisi efisien dari grup yang dibangkitkan oleh kurva hipereliptik y2+xy = x5+x2+x atas lapangan F297 . Tahap keempat membuat algoritme operasi ganda yang dibangkitkan oleh kurva hipereliptik y2+xy = x5+x2+x atas lapangan F297 . Tahap kelima membuat algoritma operasi adisi yang dibangkitkan oleh kurva hipereliptik y2+xy = x5+x2+x atas lapangan F297 . Untuk menerapkan sistem kriptografi logaritma diskret menggunakan kurva hipereliptik, pemilihan kurva dan lapangan yang sesuai merupakan hal yang mendasar. Pemilihan kurva hipereliptik genus dua dengan lapangan berkarakteristik dua sangat menarik untuk dikembangkan. Dalam penelitian ini akan dipilih kurva hipereliptik y2 +xy = x5 +x2 +x atas lapangan F297 . Order grup Jacobian H dari kurva hipereliptik y2+xy = x5+x2+x atas lapangan F297 , dinotasikan dengan #H dapat terbagi atas bilangan prima besar sebesar 53 digit desimal. Hai ini dikategorikan sebagai kurva yang dapat bertahan dari serangan kriptografi Poligh Helman dan Polard Rho. Kurva hipereliptik ini juga dapat bertahan dari serangan kriptografi Frey Ruck karena bilangan prima besar dari faktorisasi #H tidak terbagi oleh 297k�����1 untuk semua k, di mana masalah logaritma diskret didalam F297 ada jika (1 k 2000=97). Penelitian ini menghasilkan formulasi operasi ganda dan formulasi adisi yang dibangkitkan oleh kurva hipereliptik y2 +xy = x5 +x2 +x atas lapangan F297 dan algoritme operasi ganda dan algoritme operasi adisi yang diperoleh dari hasil formulasi., generalitation of elliptic curve. Hyperelliptic curve were an inggridient in public key cryptography such as excange key Diffie-Hellman. This research has three main purpose. First, to analyze security level of hyperelliptic curve y2+xy = x5+x2+x over F297 field. Second, to make a formulation of group operation that generated by hyperelliptic curve y2+xy = x5+x2+x over F297 field. Third, to construc group operation algorithm that generated by hyperelliptic curvey2+xy = x5+x2+x over F297 field. The method of this research is divided by five steps. Firts step, analyze security level of hyperelliptic curve y2 +xy = x5 +x2 +x over F297 field. Second step, formulate an efficient doubling operation that generated by hyperelliptic curve y2 +xy = x5 +x2 +x over F297 field. Third step, formulate an efficient addition operation of group that generated by hyperelliptic curve y2+xy = x5+x2+x over F297 field. Forth step, build doubling operation algorithm that generated by hyperelliptic curve y2 +xy = x5
Keyword: Cantor algorithm, Divisor, Formulation; Group, Hyperelliptic curve, Cryptosystem, Cryptography, Poligh helman, Algoritme operasi, Group jacobian kurva