Judul: Strategi Pengembangan Usaha Restoran Ragusa Es Krim Italia DKI Jakarta
Abstrak: Bisnis kuliner merupakan bisnis yang sedang berkembang pesat. Perkembangan yang pesat ini menyebabkan meningkatnya persaingan usaha yang terjadi pada bisnis kuliner. Ragusa Es Krim Italia sebagai salah satu bisnis kuliner tertua di Jakarta harus menentukan strategi untuk tumbuh dan bersaing dalam bisnis kuliner. Tujuan dari penelitian ini adalah untuk menganalisis strategi pengembangan Restoran Ragusa Es Krim Italia. Strategi pengembangan diformulasikan dengan menganalisis matriks IFE, matriks EFE, matriks IE, dan matriks SWOT. Respoden pada penelitian ini adalah pemilik usaha, pelaksana operasinal, dan staff keuangan. Hasil dari matriks IE menunjukkan Restoran Ragusa Es Krim Italia mimiliki kondisi internal yang sedang dan kondisi eksternal yang sedang, serta dikategorikan kedalam tahapan ‘hold and maintain. Hasil penelitian ini juga merumuskan lima strategi pengembangan Restoran Ragusa Es Krim Italia.
Keyword: EFE, IE, IFE, kuliner, ragusa, strategi pengembangan, SWOT

Judul: Analisis Strategi Pengembangan Usaha Restoran Padang Sari Ratu Plaza Indonesia
Abstrak: Sari Ratu Plaza Indonesia, Padang Restaurant is an Food and Beverages company that serves traditional Indonesian cuisine originated from Minangkabau. This research aimed to identify the internal and external environmental factors that affect the business, to analyze the possible business development strategies and to recommend the key strategy that can be applied by the company to develop the business. This reaserch used Delphy technique, IFE matrix, EFE, IE, SWOT, and QSPM that has revealed the internal and external environmental condition. IE matrix showed that Sari Ratu Plaza Indonesia uses growth strategies, including intensive and integrative strategy. SWOT matrix produced nine different strategies. QSPM exhibited the company's key strategies: market expansion to new areas to leverage sales, increase promotional intensity, product and service quality management, human resource training and development to increase SOP awareness among the employees, motivational training program to maintain the quality of the working relationship among associates, marketing team development, performance evaluation to measure the ability of facing the competitive pressure, and cost control.
Keyword: Bussines of development strategy, delphi technique, padang restaurant

Judul: Penyelesaian model infeksi HIV pada sel darah Putih (T CD4+) dengan menggunakan metode perturbasi homotopi
Abstrak: Acquired immunodefficiency syndrome (AIDS) is defined as symptoms of human immune system deterioration caused by human immunodefficiency virus (HIV). The virus damages the leucocytes; therefore, once a person is infected by the HIV, his/her immune system will be paralyzed and eventually he/she will not be able to survive from any disease. HIV is transmitted in many ways, such as having unsafe sex, using unsterilized syringe and blood transfusion. Homotopy perturbation method is implemented to give approximate and analytical solutions of nonlinear ordinary differential equation systems as a model for HIV infection of CD4+ T cells. A modification of the homotopy perturbation method (HPM), based on the use of numerical solution, is proposed. Some plots are presented to show the reliability and simplycity of the homotopy perturbation method. The results obtained in this study indicate that the homotopy perturbation method is highly efficient to solve models of HIV infection of cells (T CD4+). Errors resulting from this method is so small that the solution obtained by is very close to the exact solution.
Keyword: