[en] Published in summary form only

[en] The history of the search for uranium and allied materials is summarized, followed by a discussion on methods used. A brief orogenic history on which the exploration was based in the past, is also given. (author)

[en] West Sumatra is a tectonically active area where there have been several major earthquakes happened. Earthquakes can happen anytime and anyplace, so that need to know some precursor of earthquake before the earthquake occurred, such as local stress condition of region. Interrelationships between of the local stress condition a-value, b-value and z-value for the time period extending from 1981 to 2015 are examined in the West Sumatera region. For this purpose, a distribution relationship with the frequency-magnitude earthquake and temporal changes of this parameters were analyzed in order to reveal the potential of future earthquake in the study region. Beside that, standard deviation value of Z-value was estimated in the beginning of 2015 to identify of current seismicity rate changes. The result showed that the area had low spatial variation of b-value around 0.8. Low b-value indicated that the area had high stress condition and a-value had low spatial variation between 5.5 to 7 with low seismic activity. In contrast, several region had positif z-value that indicated that there were significant decreased in seismic activity. Based on this analysis it appears that these three parameters (a,b,z value) were related to each other. In some part of West Sumatra there were region that decreased earthquake activity and indicated that there was a large accumulation of energy which high local rock stress condition with significant decreased in seismic activity or seismic quiescence. This mean that the potentially devasting earthquake can be happened in West Sumatera. (paper)

[en] Prospects of geothermal energy in Java and Bali covering energy exploration cost, production and consumption are described. (SMN)

[en] Purpose: We attempted to empirically examine the fitness level of enterprises CSR strategy and its context with contingency and configuration approach. Furthermore, we used 213 CSR managers of state-owned enterprises in Indonesia as samples Design/methodology/approach: We used the purposive sampling technique to examine the data, also the contingency and configuration approach are measured with regression Euclidean distance. Findings: The result of the configuration and contingency approach has shown fit between CSR strategy and elements of contingency such as socialization tactic and time orientation. This condition also emerges on proactive CSR strategy and reactive CSR strategy, However, there are limitations of this study: an existence of the influence of the situation and condition when this study takes time; there is a concern on the result of not generalizing population, also the organizational performance only considered the size of organizational performance from non financial measure. Research limitation: (a) respondents’ answers are highly influenced by situation and condition when the study takes time. Although validity and reliability tests has shown the right outcome, there is still a possibility of a bias, (b) state-owned enterprises in Indonesia are represented by CSR manager samples with purposive technique so there is a concern on the result for not generalizing population, (c) this research only used primary data through questionnaires. It would be better to combine both primary and secondary data for future researches, (d) organizational performance only considered the size of organizational performance from non financial measure. Originality/value: There is a methodological contribution in testing the fit of a relationship, both contingency and configuration are superior in terms of research method which used Euclidean distance, and used multivariate fit and bivariate fit linear regression. This research model used systematic approach by testing the fit of a relationship, using deviation from design ideal type for socialization tactic and time orientation or contingency variable that influences organizational performance, hence it could be acknowledged the value of the influence between ideal relationship from CSR strategy, socialization tactic and time orientation. (Author)

[en] Timely and accurate data on forest change within Indonesia is required to provide government, private and civil society interests with the information needed to improve forest management. The forest clearing rate in Indonesia is among the highest reported by the United Nations Food and Agriculture Organization (FAO), behind only Brazil in terms of forest area lost. While the rate of forest loss reported by FAO was constant from 1990 through 2005 (1.87 Mha yr^-1), the political, economic, social and environmental drivers of forest clearing changed at the close of the last century. We employed a consistent methodology and data source to quantify forest clearing from 1990 to 2000 and from 2000 to 2005. Results show a dramatic reduction in clearing from a 1990s average of 1.78 Mha yr^-1 to an average of 0.71 Mha yr^-1 from 2000 to 2005. However, annual forest cover loss indicator maps reveal a near-monotonic increase in clearing from a low in 2000 to a high in 2005. Results illustrate a dramatic downturn in forest clearing at the turn of the century followed by a steady resurgence thereafter to levels estimated to exceed 1 Mha yr^-1 by 2005. The lowlands of Sumatra and Kalimantan were the site of more than 70% of total forest clearing within Indonesia for both epochs; over 40% of the lowland forests of these island groups were cleared from 1990 to 2005. The method employed enables the derivation of internally consistent, national-scale changes in the rates of forest clearing, results that can inform carbon accounting programs such as the Reducing Emissions from Deforestation and Forest Degradation in Developing Countries (REDD) initiative.

[en] Radiation vulcanization of natural rubber latex (RVNRL) can be used to make large quantities of specially stabilized latex. It is possible to obtain RVNRL films of tensile strength over 25 MPa. The films could be either coagulant dipped or cast. It is very important to determine the correct radiation dose which gives the maximum tensile strength. Cross linking density or prevulcanized relax modulus (PRM) at 100% is a reliable property to control the prevulcanization

[en] BAPETEN is a government institution, where the organizational structure and employees has a different background study and levels understanding of IT, therefore it is necessary to conduct research on employees to know the level of understanding related to the use of IT, by knowing the level of understanding of IT employees, will facilitate in terms of guidance and development of human resources, especially knowledge in the field of IT to proposes human resource development program on IT security in BAPETEN

[en] A brief report on the final round of the first World Physics Olympiad (WoPhO) held in Lombok, West Nusa Tenggara, Indonesia is presented. The theoretical and experimental problems are presented and the mark distribution is discussed. (paper)

[en] Conoco successfully has used four different radioactive tracers simultaneously to determine the direction of fluid movement in a sequence of Pennsylvanian-age sandstone benches within the northern half of the West Sumatra Unit. Radioactive tracer material introduced at the injection well and identified at the producing well provides the flow direction and rate of movement of injected fluids. This information will be used to maximize sweep efficiencies and optimize depletion plans in this multipay, discontinuous reservoir. 2 refs