Embedded Curves and Foliations

We prove the existence of regular foliations with a prescribed tangency divisor in neighborhoods of negatively embedded holomorphic curves; this is related to a linearization theorem due to Grauert. We give also examples of neighborhoods which can not be linearized.Comment: Pub. Mat. 55, 201

Extension of germs of holomorphic foliations

We consider the problem of extending germs of plane holomorphic foliations to foliations of compact surfaces. We show that the germs that become regular after a single blow up and admit meromorphic first integrals can be extended, after local changes of coordinates, to foliations of compact surfaces. We also show that the simplest elements in this class can be defined by polynomial equations. On the other hand we prove that, in the absence of meromorphic first integrals there are uncountably many elements without polynomial representations.Comment: 17 page

Peningkatkan Berproses Siswa Dalam Belajar IPS Dengan Teknik “Oval – Et”

This study aims to: 1) increase the involvement of students in learning activities proceed on Population Problems materials and Abatement Efforts through learning techniques OVAL-ET, 2) improving student learning outcomes in social studies learning through techniques OVAL-ET, and 3 ) determine students responses to the application of learning to OVAL-ET techniques in social studies for VIII A grade students of SMP Negeri 2 Rawalo in the first semester in the Academic Year 2010/2011. Questionnaires and interviews were used to collect data about their interests, and the assessment for learning social studies, while the observations are used to collect data about student involvement in various aktvitas proceed to learn both in the classroom and outside the classroom, and learning logs are used to determine students responses to the application of engineering OVAL-ET in teaching social studies. Based on the data from this study concluded Technique "OVAL-ET" to proceed to increase the involvement of students in learning activities and student achievement

Singularités nilpotentes et intégrales premières

This paper presents a classification of plane dicritical nilpotent singularities, i.e. singularities which have nilpotent linear part and infinitely many separatrices. In particular the existence of meromorphic first integrals is discussed. The same ideas are applied to other kind of dicritical singularities

Kajian Instrumen Pungutan Bagi Pengguna Jalan Untuk Dana Pemeliharaan Di Propinsi Jawa Barat

. In the current condition revenue from road transport sector allocated to road expenditure, especially related to road maintenance, is very low. The revenue is collected in a form of tax of the object, the vehicle. But, this does not represent the contribution of the object to the road maintenance expenditure. Charging instruments for the road maintenance have been implemented widely in many countries and known as Road Fund. The fund is managed by road's stakeholder to assure that the collected charges will be reallocated to the road sector. This study is dealing with some aspects of the charging instrument for the road maintenance with respect to types, charges, and mechanism. Based on the literature study the selected instruments are vehicle license fee, fuel levy, and heavy vehicle license fee. This study refers to the International practices and experiences and considers some criteria such as administration characteristics, applicability, and simplicity of collecting mechanism. This study reveals that the charge per vehicle per kilometer for the maintenance expenditure based on some financing scenario increases the Vehicle Operating Cost (VOC) by 0.68% to 3.32% depending on the vehicle type. The suggested collecting mechanism is to use the established existing mechanism to save the time and cost, namely vehicle license fee through the car license plate number (STNK) payment, fuel levy through the Pertamina as the sole distributor of fuel, and heavy vehicle license fee through the car inspection mechanism

Kajian Instrumen Pungutan Bagi Pengguna Jalan Untuk Dana Pemeliharaan Di Propinsi Jawa Barat

. In the current condition revenue from road transport sector allocated to road expenditure, especially related to road maintenance, is very low. The revenue is collected in a form of tax of the object, the vehicle. But, this does not represent the contribution of the object to the road maintenance expenditure. Charging instruments for the road maintenance have been implemented widely in many countries and known as Road Fund. The fund is managed by road\u27s stakeholder to assure that the collected charges will be reallocated to the road sector. This study is dealing with some aspects of the charging instrument for the road maintenance with respect to types, charges, and mechanism. Based on the literature study the selected instruments are vehicle license fee, fuel levy, and heavy vehicle license fee. This study refers to the International practices and experiences and considers some criteria such as administration characteristics, applicability, and simplicity of collecting mechanism. This study reveals that the charge per vehicle per kilometer for the maintenance expenditure based on some financing scenario increases the Vehicle Operating Cost (VOC) by 0.68% to 3.32% depending on the vehicle type. The suggested collecting mechanism is to use the established existing mechanism to save the time and cost, namely vehicle license fee through the car license plate number (STNK) payment, fuel levy through the Pertamina as the sole distributor of fuel, and heavy vehicle license fee through the car inspection mechanism

Understanding the spatial organization of agricultural co-operative groups (In French)

The processes of localization/delocalization of activities attest that space is important in firm’s strategies. Merger and acquisition contributes too modify the spatial organization of firms. This paper aims at analyzing the spatial organization at the level of groups of firms. The conceptual framework combines an analysis in terms of proximity and theories of the firm. We study the co-operative agricultural groups, which are relevant to question the territorial anchoring of the firm. Spatial indicators are proposed and mobilized at different levels of organization of the groups. Results show the importance of territorial anchoring in the strategies of co-operatives heads of the group. However, the development of big co-operative groups could lead to changes in the spatial logics facing a context of globalization.NAAgricultural cooperatives, Mutualist control, Territorial anchoring