Judul: Usaha untuk meningkatkan daya saing karet alam Indonesia di Pasar Internasional melalui efisiensi pemasaran
Abstrak: Masalah pokok yang dihadapi perkaretan Indonesia pada dasarnya adalah bagaimana meningkatkan doya saing di pasar internasional. Dalam upaya meningkatkan daya saing ini , pemerintah telah melakukan serangkaian kebijakan baik yang bersifat langsung maupun tidak langsung, antara lain peningkatan produlcsi. dan mutu karet rakyat melalui Proyek Pengembangan Karct Rokyat (PPKR) serta kebijakan devaluasi .
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Judul: Analisis Keterpaduan Pasar Internasional Komoditi Karet Indonesia
Abstrak: Dalam rangka menghadapi era pasar bebas dan upaya meningkatkan nilai ekspor non migas maka diperlukan daya saing tinggi bagi setiap komoditi yang akan diekspor. Salah satu upaya yang dapat dilakukan adalah memperkuat kedudukan pasar dalam negeri pada struktur pasar interna- sionalnya. Karet alam memberikan kontribusi yang cukup memadai dalam perekonomian nasional baik terhadap penyerapan tena- ga kerja maupun terhadap perolehan devisa. Karet merupa- kan penghasil devisa utama sektor perkebunan serta menjadi sumber pendapatan bagi jutaan penduduk Indonesia. Tujuan penelitian ini adalah untuk mengetahui pola keterpaduan pasar internasional karet alam Indonesia. Berdasarkan pola keterpaduan tersebut akan diperoleh gam- baran tentang kedudukan pasar karet dalam negeri pada struktur pasar internasionalnya serta gambaran tentang efisiensi sistem informasi pasar bersangkutan. Sebagai objek penelitian adalah produk RSS 1 sedang harga pasar yang digunakan adalah harga pasar dalam negeri (Jakarta), harga pasar Singapura, dan harga pasar Amerika Serikat (New York). Pemilihan jenis mutu RSS 1 didasarkan...dst
Keyword: manajemen pemasaran, komoditi karet, industri karet, rubber, marketing management

Judul: Simulation of Modified Minimal Model for Glucose and Insulin Mechanism in Type 2 Diabetes and Healthy Humans
Abstrak: Bergman minimal model is Mathematics model which is invented by Richard N. Bergman in 1979. That model consists of three compartments to predict glucose effectiveness (SG) and insulin sensitivity (SI) from the intravenous glucose tolerance test (IVGTT) data in a period of time. A lot of modifications from bergman minimal model have been made with the purpose to increase the accuracy and to handle process complexity in glucose-insulin mechanism system. Minimal model can be used in health to diagnose, to prevent, and to treat diabetes patients. In this research, mathematics model is modified based on the assumption that insulin enters the plasma insulin compartment at a rate proportional to the product of time and the glucose concentration above a basal plasma glucose concentration. If the plasma glucose concentration drops below the basal plasma glucose concentration, so insulin rate which enters the plasma glucose compartment is zero. Insulin is cleaned from the plasma insulin compartment at a rate proportional to the amount of insulin in the plasma insulin compartment. This model is also modified based on the assumption that the insulin decay rate is not always a first order process and function identification from insulin infusion rate. Modified minimal model that is obtained in this research consists of three ordinary diferensial equations. The first and second diferensial equations state that the influence of insulin to speed up glucose absorption, whereas the third diferensial equation states that the influence of glucose to increase insulin secretion. The accuracy of modified minimal model working is tested by comparing the simulation result of modified minimal model with the simulation result by Zheng and Zhao and the experiment result from the previous study which is done by Jiaxu et al. The simulation from that ordinary diferensial equation is accomplished using ode45. In general, modified minimal model is applied to healthy humans and type 2 diabetes patients which is then divided into four conditions based on the amount of exogenous insulin infusion that is applied in MATLAB (Matrix Laboratory). On the first condition, model simulation in healthy humans without giving insulin infusion. That simulation result shows that after giving glucose injection to the body, glucose reaches higher concentration and returns to basal condition within one hour. When giving glucose injection, the signal is sent to pancreas, β cells in islands of langerhans reacts by producing insulin hormone. This condition is signed with the increase of insulin concentration in the body. After that, insulin concentration decreases and forms little peak. Insulin hormone functions to process glucose so that it can be absorbed by body cells. Within one hour insulin concentration will return to basal level because there is no glucose that should be processed anymore. It presents that pancreas responsiveness is excellent, in which β cells are able to secrete enough insulin to keep blood glucose concentration in normal condition. On the second condition, that is model simulation in healthy humans by giving exogenous insulin infusion on the 20th minute for 5 minutes as much as 30 mU kg-1 body weight. Glucose concentration of healthy humans will return quickly to
Keyword: modified minimal model, glucose,, insulin, type 2 diabetes