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"PT. Unilever Indonesia yang saat ini sudah banyakdikenal masyarakat pada mulanya didirikan menjelang akhirtahun 1933 dengan nama Lever's Zeepfabrieken N.V. ("LZF")dan mulai beroperasi sebagai produsen sabun pada bulan Oktober1934, setelah beberapa kali mengalami perubahan baiknama maupun modal maka pada tahun I960 resmilah pemakaiannama PT. Unilever Indonesia sampai sekarang."

"The applications of the theory of Optimal Control of distributed parameters is an extremely wide field and, although a large number of questions remain open, the whole subject continues to expand very rapidly. The author does not attempt to cover the field but does discuss a number of the more interesting areas of application."

"Untuk mencegah terjadinya kekosongan obat (stock out) di gudang farmasi dan jumlah persediaan obat berkurang terus menerus maka perlu menentukan batas minimal pemesanan (ROP) dan jumlah stock pengaman (buffer stock) selama masa tenggang.Penelitian ini menggunakan pendekatan kualitatif dan kuantitatif. Cara pengambilan data adalah wawancara mendalam, observasi dan telaah dokumen dengan jumlah sampel 332 item.Hasil penelitian menunjukkan bahwa pengklasifikasian obat antibiotik berdasarkan pemakaian yaitu fast moving sebanyak 41 item (12,35%), moderate sebanyak 65 item (19,58% ) dan slow moving sebanyak 226 (68,07%) dari total 332 item obat antibiotik.Berdasarkan hasil perhitungan didapatkan jumlah buffer stock dan Reorder Point (ROP) untuk kelompok fast moving, moderate dan slow moving obat antibiotik di RS Haji bervariasi dan menunjukkan angka dibawah standar ideal.Untuk itu diharapkan jumlah buffer stock dan ROP di unit gudang RS Haji dapat ditingkatkan lagi untuk mencegah terjadinya kekosongan obat (stock out) sehingga pelayanan dapat terpenuhi tepat waktu dan sesuai kebutuhan.

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To prevent a stock out fast decresing in drug stock in pharmaceutical Unit RS Haji Jakarta, it needs to determine ROP and buffer stock the lead time.

This research uses qualitative and quantitative, Information was obstained from indep interview, observasion and dokumen review with a total sample of 332 antibiotics item.

The results showed that the classification based on the use of antibiotic drugs fast moving (40 items), moderate (66 items) and slow moving (226 items) from the total 332 antibiotic items.

Base on the calculation, the amount of buffer stock and ROP for fast, moderate and slow moving antibiotics are still under the ideal standard.

Therefore, it needs to increase the number of buffer stock ang ROP in the pharmaceutical Unit RS Haji Jakarta in order to give a good pharmaceutical service to the patient."

"Malaria adalah penyakit menular yang disebabkan oleh parasit Plasmodium dan ditularkan melalui gigitan nyamuk Anopheles betina. Dalam tesis ini dikonstruksikan model matematis penyebaran malaria dengan mempertimbangkan faktor bias dalam proses infeksi dan intervensi fumigasi dalam pengendalian malaria. Model tersebut dibangun sebagai model SIRI-UV dalam bentuk sistem persamaanperbedaan biasa enam dimensi. Analisis titik keseimbangan dan stabilitasnya dan analisis sensitivitas dari bilangan reproduksi dasar (R0) dilakukan secara analitik dan numerik. Berdasarkan studi analitik diperoleh dua jenis titik keseimbangan yaitu titik keseimbangan bebas penyakit dan titik keseimbangan endemik. Ketika R0 @@ 1, tidakada titik keseimbangan endemik, atau ada dua titik keseimbangan endemik bila R0 1. Sedangkan bila R0 AA 1 terdapat titik keseimbangan endemik dan tiga titik keseimbangan jika R0 1. Melalui studi analitik dengan menggunakan aturan Descartes dan eksperimen numerik, menemukan bahwa percabangan ke belakang terjadi pada suatu saat R0 1, ​​dan saat R0 1 terjadi percabangan maju dan mundur secara bersamaan. Untuk Untuk mendukung interpretasi model, simulasi numerik dari sensitivitas R0 dan R0 juga dilakukan simulasi otonom dari parameter angka kematian nyamuk akibat fumigasi dan faktor bias. Hasil simulasi menunjukkan bahwa angka kematian nyamuk meningkat karena pengasapan akan meningkatkan kemungkinan penyakit tidak menyebar dan hilang, Adapun semakin besar faktor biasnya maka semakin besar pula jumlah nyamuk dan manusia yang terinfeksi.

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Malaria is a contagious disease caused by the parasite Plasmodium and transmitted through the bite of a female Anopheles mosquito. In this thesis, a mathematical model of the spread of malaria was developed by considering bias factors in the infection process and fumigation interventions in malaria control. The model is built as a SIRI-UV model in the form of a system of equations the usual six dimensional difference. The equilibrium point analysis and stability and sensitivity analysis of the basic reproduction number (R0) were carried out analytically and numerically. Based on the analytical study, two types of balance points were obtained, namely the disease-free balance point and the endemic balance point. When R0 @@ 1, no there is an endemic equilibrium point, or there are two endemic equilibrium points if R0 1. Whereas if R0 AA 1 there is an endemic equilibrium point and three equilibrium points if R0 1. Through analytic studies using Descartes' rule and numerical experiments it is found that the reverse branching occurs at one day R0 1, ​​and when R0 1 there is simultaneous forward and backward branching. To support the interpretation of the model, numerical simulations of the sensitivity of R0 and R0 were also carried out with autonomous simulations of the mosquito mortality rate parameters due to fumigation and bias factors. The simulation results show that the increased mosquito mortality rate due to smoking will increase the likelihood that the disease will not spread and disappear. The greater the bias factor, the greater the number of infected mosquitoes and humans."

"This volume is dedicated to Bill Helton on the occasion of his sixty fifth birthday. It contains biographical material, a list of Bill's publications, a detailed survey of Bill's contributions to operator theory, optimization and control and 19 technical articles. Most of the technical articles are expository and should serve as useful introductions to many of the areas which Bill's highly original contributions have helped to shape over the last forty odd years. These include interpolation, Szegö limit theorems, Nehari problems, trace formulas, systems and control theory, convexity, matrix completion problems, linear matrix inequalities and optimization."