Optimasi Portofolio Investasi Dengan Menggunakan Model Markowitz

Permasalahan pokok dalam paper ini adalah memilih dua saham unggulan dan proporsi dana yang akan diinvestasikan dalam pembentukan suatu portofolio. Optimasi portofolio investasi di sini dilakukan dengan menggunakan model Markowitz. Dari empat saham unggulan versi LQ 45 yang dianalisis menunjukkan bahwa saham HM Sampurna dan Telkom memberikan hasil yang optimum dalam pembentukan portofolio investasi dengan proporsi dana berturut-turut sebesar 51% dan 49%

An Approach to Publish Spatial Data on the Web: The GeoLinked Data Case

In this paper we report on an ongoing process aimed at publishing hydrographical data on the Web with a Spanish GeoLinked Data Use Case. Moreover, we discuss the process we followed, and propose methodological guidelines for all the activities involved within the process

Formalisation and experiences of R2RML-based SPARQL to SQL query translation using Morph

R2RML is used to specify transformations of data available in relational databases into materialised or virtual RDF datasets. SPARQL queries evaluated against virtual datasets are translated into SQL queries according to the R2RML mappings, so that they can be evaluated over the underlying relational database engines. In this paper we describe an extension of a well-known algorithm for SPARQL to SQL translation, originally formalised for RDBMS-backed triple stores, that takes into account R2RML mappings. We present the result of our implementation using queries from a synthetic benchmark and from three real use cases, and show that SPARQL queries can be in general evaluated as fast as the SQL queries that would have been generated by SQL experts if no R2RML mappings had been used

Membangun Model Pengelolaan Sumberdaya Perikanan Berkelanjutan Berdasarkan Karakteristik Sosial Ekonomi Masyarakat Nelayan Tinjauan Sosiologi Antropologi

Indonesia entities of very abundant sea and coastal resources. The resources need to be managed well in order to prevent any destruction that can lead to decrease human quality life. This research aims at developing a model of fisheries resources management in Karang Jaladri village of Ciamis Regency. The model Is based on the characteristics of fishermen socio-economics. Socio-antrophology approach is used to explain the findings. The research outcomes Is that local knowledge can facilitate the resources management. Co-management can be used as an alternative approach In Implementing sea and coastalresources management

Geographical Linked Data: a Spanish Use Case

We present the process that has been followed for the development of an application that makes use of several heterogeneous Spanish public datasets that are related to administrative, hydrographic, and statistical domains. Our application aims at analysing existing relations between the Spanish coastal area and dierent statistical variables such as unemployment, population, dwelling, industry, and building trade. Moreover, we provide an important innovation with respect to other similar processes followed in other initiatives by dealing with the geometrical information of features