Judul: Hubungan antara pengetahuan gizi dengan persepsi mengenai keamanan pangan jajanan pada guru SD di Bogor
Abstrak: The general objective of this study was to investige nutritional knowledge and perception about food safety of teacher elementry school in Bogor. The research was conducted using a cross sectional study. The number of samples for each region was 23, sample was selected purposively. The percentage of nutritional knowledge level was 65.2% in rural area and 87% in urban area. The percentage of food safety knowledge level was 69.6% in rural area and 69.6% in urban area. The percentage of perception about food safety level was 78.3% in rural area and 95.7% in urban area. The result of independent sample t-test toward characteristic sample, nutritional knowledge, food safety knowledge, and perception about food safety indicate there was no difference (p>0.05) beetwen rural area and urban area, but there was a few characteristic sample which indicate there was a real difference (p<0.05) beetwen rural area and urban area.The result of correlation spearman test indicate there was no significant correlation (p>0.05) beetween characteristic samples with nutritional knowledge, except one characteristic sample that was training/meeting about nutrition indicate there was significant correlation with nutritional knowledge (p<0.05). The result of correlation spearman test indicate there was no significan correlation (p>0.05) beetwen characteristic sample with food safety knowledge. The result of correlation spearman test indicate there was no significant correlation (p>0.05) beetwen nutritional knowledge with food safety knowledge, nutritional knowledge with perception about food safety, and food safety knowledge with perception about food safety.
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Judul: Persepsi guru sekolah dasar pada media pendidikan gizi terkait perilaku gizi dan keamanan pangan
Abstrak: Teacher had an important role toward the introduction of nutrition and food safety at school as a basic for student eating custom and safety development. Teacher standarization of nutrition and food safety knowledge would have an influence to the student knowledge. The teachers might be the sample for their student in eating nutrition habit and food safety. It remind us how important the meaning of nutrition education and food safety for students elementary school in order to formed good eating and healthy, so we need a teacher who good behavior related to the nutrition and food safety. The general purpose of this study was to analyze the influence of knowledge, attitude, practices related to nutrition and food safety toward the teachers perception on the nutrition education media according to the region and school accreditation, meanwhile the specific purpose of this study were (1) to analyze the social economic teacher’s characteristic, (2) to analyze the teacher’s knowledge, attitude, practices related to nutrition and food safety, (3) to analyze the teacher’s perception on media, such as moduls, leaflets, posters, flip chart and nutrition education booklets, and (4) to analyze the influence of nutrition behavior and food safety toward the teacher’s perception on nutrition education media. The design of the study was cross sectional study. The location of the study was at Lawanggintung 01 Elementary School (A accreditation) and Cimangu Kecil Elementary school (B accreditation) in Bogor urban, Pajeleran 01 Elementary School (A accreditation) and Kotabatu Elementary School (B accreditation) in Bogor rural. The teacher’s in this study were active teacher’s and had willing to filled the questionnaire and there were 68 teachers. This study was a part of the study “Developing Model of Healthy Street Food on Elementary School” by SEAFAST center–LPPM Bogor Agricultural Institute, the study started from July 2009 to June 2010. The primary data include the social economic characteristic (gender, age, level of education, length of worked as teacher, family member, and level of family income), behavior (knowledge, attitude, practice) related to nutrition and food safety, teachers perception to the nutrition education media. The primary data did by filling the questionnaire. Secondary data include the general school condition which got from questionnaire. Data processing and analyzing were processed by computer programme microsoft excell and Statistical Program for Social Science (SPSS) version 16.0 for windows. Generally female techers (75%) were more than male (25%). The age of the teaches at middle aged group (61.8%) and the average of the teachers age both male of female were 42.3 years old. The level of elementary teacher school were S1 (47.1%) and diploma (47.1%), the length of worked as teacher between 21-30 years (42.6%), whereas family member 77.9%, teacher family which was include small family category (≤ 4 person), 55.9% teachers had income in the range Rp500 000 – Rp1 000 000 capita/month. The result of the analysis showed that 50% teacher elementary school had medium knowledge about nutrition and food safety, but when it viewed from school accreditation it told that the school which had A accreditation (medium category 54.76%) was better than school
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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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