Judul: Pengetahuan Masyarakat dalam Pemanfaatan Hasil Hutan Bukan Kayu (HHBK) Di Kawasan Cagar Alam Gunung Sibela
Abstrak: Community living around Gunung Sibela Nature Reserve depend on its products mainly to fulfill their needs. They develop knowledge to utilize forest resources including Non-Timber Forest Products (NTFPs). The objectives of this research are to describe people’s knowledge of NTFPs and explaining factors that influence pattern of NTFPs utilization. The method used in this research was survey. Data were collected with interview, observation, and secondary data collection. The results show that NTFPs collected by local people comprises of medicinal plants, yarn and handcraft-produce plants, crops, ornamental plants, and group of hunted animals. They utilize NTFPs to fulfil their daily needs and earn more income. Age, education, and work do not influence pattern of NTFPs utilization by local people
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Judul: Kajian Pemanfaatan Sumberdaya Hutan di Taman Nasional Gunung Halimun Salak oleh Masyarakat Sekitar
Abstrak: Forest product utilization by communities in Taman Nasional Gunung Halimun Salak (TNGHS) faced the fact that TNGHS is one of the Conservation areas that are restricted by regulation. The utilization activities allowed only on certain zones.Meanwhile, local community has been utilized forest resources since long time ago, even before TNGHS established yet not known whether the utilization has been following the rules of TNGHS or not.Therefore, it is necessary to know the characteristics of forest utilizations by local community. Once known the characteristic of utilization by the public, then we could be formulated strategies for the utilization of forest products in a sustainable way.The utilization of forest products by the community around TNGHS especially in Hanjawar village, Majasarivillage and Kutajayavillage used used for daily needssuch as food needs, boards, medicines, household equipment, firewood and fodder. There are 103 species of forest products that are utilized. Utilization only done by local communities.The location of the utilization gone into the 5 zone namely special zone, jungle zone, rehabilitation zone, utilization zone and traditionalzone.
Keyword: utilization, local community, Gunung Halimun Salak National Park, forest product

Judul: Invers Drazin dari Matriks Toeplitz Singular
Abstrak: Matriks Toeplitz adalah matriks yang setiap unsur pada diagonal utama bernilai sama dan setiap unsur pada subdiagonal yang bersesuaian dengan diagonal utama juga bernilai sama. Matriks singular adalah matriks yang tidak bisa ditentukan inversnya. Akan tetapi, dapat diupayakan untuk ditentukan inversnya menggunakan invers matriks yang diperumum. Invers Drazin merupakan salah satu jenis invers matriks yang diperumum. Pada karya ilmiah ini ditentukan invers Drazin dari matriks Toeplitz singular dengan menggunakan metode Leverrier Faddeev. Kemudian, ditentukan invers Drazin dari matriks Toeplitz singular yang direpresentasikan sebagai penjumlahan segitiga bawah dan segitiga atas matriks Toeplitz berdasar pada teorema Gohberg dan Semencul., Toeplitz matrix is a matrix in with element on the main diagonal has the same value and on the subdiagonal corresponding to the main diagonal also has the same value. Singular matrix is a matrix that has no inverse. However, it can be attempted to determine the inverse using a generalized inverse matrix. Inverse Drazin is a type of generalized matrix inverse. This paper discussed the inverse Drazin for a singular Toeplitz matrix using the Leverrier Faddeev method. Then, the Drazin inverse of the singular Toeplitz matrix which is represented as a sum of products of lower and upper triangular Toeplitz matrix based on Gohberg and Semencul theorem.
Keyword: inverse Drazine, singular Toeplitz matrix