Judul: Faktor-Faktor Yang Mempengaruhi Keputusan Masyarakat menabung Sampah Serta Dampak Keberadan Bank Sampah Gemah Ripah (Kasus Masyarakat dusun badegan, Yogyakarta)
Abstrak: Indonesia is one of the most populated countries and it’s population has tendency to increase from time to time. This situation will cause the volume of garbage produced by population will as well. Waste management which consists of collecting, mobiling and throwing cause the disposal unit to be overwhelmed. Therefore, new garbage management is needed to change the old paradigm such as what the Dusun Bagedan citizens do, using Bank Sampah Gemah Ripah. This research aims to identify the mechanism pattern of garbage bank, analyze factors that determine citizen’s choice to saving garbage and analyze the impact of garbage bank existence. This research was carried in from March until May 2009. This research uses primary and secondary data. Primary data are collected by using questionnaire to 86 patriarch at Dusun badegan citizen using purposive sampling. Secondary data is collected by interviewing relevant informant. Mechanism pattern that is used by Bank Sampah Gemah Ripah is still very simple. It is formed based on the citizen’s aspiration and without any help from government institution. Garbage bank has two saving systems, individual and communal garbage system for anorganic garbage like paper, plastic and can. Individual customer will receive 85% from their saving while the rest for cash. Communal consumers (every RT) will receive 30% of the garbage that their saving and the rest also for the cash. Individual consumer either or communal can take the withdrawal once every three month. After analyzing data using Logistic regression, Statistically, factors that significantly detemine citizen choice to keep their garbage in saving bank are age factor that is 26-40 years old, family member, distance, kind of job, being a housewife, how active responden in a organization and also promotion. Based on respondent perception, social benefits of Bank Sampah Gemah Ripah among others are education or information about the importance of garbage management and it is experienced by 71 respondents. 69 respondents also experience the better change of garbage sevices system at their community. Based on McNemar analysis, the citizen’s behavior that is change are dispose garbage to the proper place, shifting house garbage, provide special rubbish bin at house. 58 respondent (67, 44%) experience the economical advantage of garbage bank. 76% respondent (88,37%) experience the decrease of garbage in their community. 9 respondent experience the bad impact of garbage bank. It’s because there are some garbage collectors who want to stead the garbages that make Dusun Badegan environment insecure.
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Judul: Analisis Perilaku Nasabah Bank Sampah (Studi Kasus: Bank Sampah Sejahtera, Kelurahan Kedungbadak, Kota Bogor Provinsi Jawa Barat)
Abstrak: A lot of waste banks flourished throughout cities and villages in Indonesia. Many believe that the waste bank could effectively solve the domestic waste problems in Indonesia. However, some waste banks are unsustainable after a few years. This study observes the background situation of the waste bank from the social psychology point of view. First, the study aims to analyze the influence of bank customers' attitudes, subjective norms, and behavioural control on the intention to handle domestic waste. Second, to analyze the effect of behavioural control, the intention, waste bank management to handle domestic waste. A social survey type of research is applied. Amount of 30 respondents of the Sejahtera Waste Bank's members in Kedungbadak Village, Bogor, were interviewed using a questionnaire. In addition, in-depth interviews with informants were also applied. To test the hypotheses, a multiple regression analysis was applied. The results show that, first, all three variabels simultaneously affect the bank customers' intention to handle domestic waste. Second, it is found that the intention, control behaviour, and waste bank management of the bank customer simultaneously affect the emergence of waste handling behaviour.
Keyword: attitude, subjective norms, controll behavior, intention, waste bank management,behavioror

Judul: Hamiltonian formulation for linear waves motion in two layers fluid
Abstrak: The surface wave could be considered as a wave that separates two fluids, namely water and air. Based on this assumption, it is introduced the interfacial wave, a wave between two layers of fluid with different density. The formulation of interfacial waves motion begins with deriving the base equation of irrotational ideal fluid. Furthermore, according to irrotational fluid assumption, the base equation can be stated in velocity potential. In this derivation, the fluids domain is assumed to be restricted by rigid lid boundary conditions, both at the upper and lower limit. Therefore, the interfacial waves motion can be explained in a hamiltonian formulation. In the hamiltonian formulation, total energy is defined as the sum of kinetic and potential energy. The hamiltonian system is obtained from reduction of kinetic energy by using the Dirichlet Neumann Operator. The resulted kinetic energy equation is nonlinear. Therefore, this form is linearized by first part of the Taylor expansion. This linearization gives a dispersion relation of linear wave. Based on this dispersion relation, the phase speed of the linear wave depends on the density ratio of the two layers fluid.
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