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Search Results: 1 - 10 of 1202 matches for " Hendricus Andy Simarmata "
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Institutional Barriers of Low Carbon Development Planning in Indonesian Small Cities  [PDF]
Hendricus Andy Simarmata, Adriadi Dimastanto, Soly Iman Santoso, Dharma Kalsuma
Low Carbon Economy (LCE) , 2014, DOI: 10.4236/lce.2014.53011
Abstract: Recently, building low carbon development pathway becomes a mandatory task for many big cities through spatial planning. For a small city that still has many green areas, it assumed that the mainstreaming process of low carbon development into spatial planning is easier. However, studies that explore planning challenges of small cities in building a pathway of low carbon development is still limited. This study aims to examine the mainstreaming process of low carbon development strategies into the spatial planning through three case studies of Indonesian small cities. The quantitative and qualitative data collected from the fieldwork in three small cities: Kasongan, fromJuneto December 2010; Merauke, fromJuneto December 2011; and Sendawar, from January to June 2013. We argue that the small cities, which assumed have main potential carbon storage, in fact, have also the extensive carbon emission. They have the institutional barriers, including the limited knowledge on the economic opportunities of low carbon development, the lack of technicalcapacity of local government in implementing low carbon planning process, and the inadequate data to support the planning method. The leadership of Mayor is crucial in opening the barriers, but not to create the pathway yet. Therefore, we suggest that providing technical support of low carbon development, strengthening institutional capacity, and empowering the local community would optimize the mainstreaming process.
Semi-Lagrangian discontinuous Galerkin schemes for some first and second-order partial differential equations
Olivier Bokanowski,Giorevinus Simarmata
Mathematics , 2015,
Abstract: Explicit, unconditionally stable, high-order schemes for the approximation of some first- andsecond-order linear, time-dependent partial differential equations (PDEs) are proposed.The schemes are based on a weak formulation of a semi-Lagrangian scheme using discontinuous Galerkin (DG) elements.It follows the ideas of the recent works of Crouseilles, Mehrenberger and Vecil (2010), Rossmanith and Seal (2011),for first-order equations, based on exact integration, quadrature rules, and splitting techniques for the treatment of two-dimensionalPDEs. For second-order PDEs the idea of the schemeis a blending between weak Taylor approximations and projection on a DG basis.New and sharp error estimates are obtained for the fully discrete schemes and for variable coefficients.In particular we obtain high-order schemes, unconditionally stable and convergent,in the case of linear first-order PDEs, or linear second-order PDEs with constant coefficients.In the case of non-constant coefficients, we construct, in some particular cases, "almost" unconditionally stable second-order schemes and give precise convergence results.The schemes are tested on several academic examples.
The Ethics of Direct Primary Care  [PDF]
Andy Wible
Open Journal of Philosophy (OJPP) , 2019, DOI: 10.4236/ojpp.2019.91003
Abstract: Direct primary care (DPC) is a market based approach to providing medical care. Patients avoid insurance and directly pay a monthly membership type of fee to physicians for unlimited access. DPC practices have been growing throughout the United States by claiming to be better for patients and primary care physicians. This paper looks into the ethical implications of such practices and explores future moral concerns if DPC continues to expand. Finally, from a societal perspective, regulated universal coverage, as provided in countries such as Japan, is examined as a way to achieve most of the benefits of DPC while avoiding many of the problems.
Management of Water Saving and Organic based Fertilizers Technology for Remediation and Maintaining the Health of Paddy Soils and To Increase the Sustainability of Rice Productivity in Indonesia
Tien Turmuktini,Tualar Simarmata and Benny Joy,Ania Citra Resmini
Asian Journal of Agriculture and Rural Development , 2012,
Abstract: The rice production in Indonesia is dominated by permanent flooding or inundation system. Intensification of permanent flooding of paddy soils not only reduces the soil biological power significantly, but also restricts the roots growth. Various field studies indicated mostly of paddy soils in Indonesia has a low organic content (< 2%). Management of paddy soil health is urgently required to restore, improve and maintain the soils organic matter as heart of soil ecosystem. SOBARI (system of organic based aerobic rice intensification) as water saving technology combined with straw compost based fertilizers technology has two main goals: (1) to remediate or restore, improve and maintain the health and quality of paddy soils, and (2) to enhance rice productivity in sustainable ways (efficient water and fertilizer use). The field results using several rice varieties in Indonesia revealed that the water saving technology combined with organic fertilizers (straw compost) can produce grain yield about 8 – 12 t/ha (average of an increasing about 50 – 150% compared to anaerobic rice cultivation) and the water irrigation was reduced by at least 30 - 50% and as well as inorganic fertilizers was reduced at least by 25% This high rice yield is highly correlated with the increasing of roots zone about 4 – 10 times, number of productive tillers about 60 – 80 tillers, number of panicles, length of panicles and number of grain/panicle, and as well as due to the increase of soil biodiversity. The reuse of straw or straw compost into soils within three years is expected to be able to remediate and improve the health of degraded paddy soils significantly.
Organisational Creativity: Building a Business Ba-Haus?  [PDF]
Andy Wilkins, Clive Holtham
Creative Education (CE) , 2012, DOI: 10.4236/ce.2012.326110
Abstract: Our focus is on the systemic nature of creativity and the role of business schools in stimulating and enhancing organisational creativity, across all sectors of the economy, particularly those which are not conventionally regarded as ‘creative’ industries. After defining creativity and reviewing a number of frequently occurring ‘creativity clichés’ that are potentially keeping organisational creativity in a rut, we go on to explore some of the key challenges with creativity that need particular focus, including: taking a systemic approach, as well as more attention on ‘difficult’ aspects such as the climate for creativity or creativity ‘ba’. We propose a Systemic Innovation Maturity Framework as a way to conceptualise and organise a way forward in organisations and in business schools. We believe that in a similar way to the Bauhaus of the early 20th century, there needs to be a step change in the way creativity is researched, taught and applied that encompasses a more ecological approach. We believe a more comprehensive, inclusive and useful conception of creativity may result from the consideration of the four dimensions of the framework and their interactions. We wonder; is it time for a new Business Ba-Haus?
High Resolution in Seismic Refraction Tomography for Environmental Study  [PDF]
Andy A. Bery
International Journal of Geosciences (IJG) , 2013, DOI: 10.4236/ijg.2013.44073
Abstract:

Seismic refraction tomography (SRT) involves more complex mathematic algorithms to fit more flexible model. In the field procedure SRT in generally needs more shot points than standard seismic refraction survey to obtain high resolution profile. In this seismic refraction study, we have used 9 shot-points for inline and 10 shot-points for offset in purpose to obtaine high resolution of seismic refraction tomography. During a recent geophysical test site, the subsurface material was mapped along survey line using seismic refraction method. Analyses of the site investigation data revealed that the studied site was made up of two layers of the subsurface. The upper layer has velocity values with range of 500 m/s to1500 m/s which can be classified as unconsolidated surface deposits and mixtures of unsaturated sands and gravels. Meanwhile the lower layer has velocity values with range of2000 m/s to5500 m/s which is classified as compacted fine’s soil due to high pressure of the overburden. Analysis of seismic refraction data demonstrated that refraction tomography software systems are able to reveal subsurface material which represented by their seismic velocity value. Furthermore, the velocity model obtained in this study is agreed with its synthetic modelling result as initial model. This validity and reasonable results was able to assist in interpretation of the seismic refraction method for the environmental study.

Clayey Sand Soil's Behaviour Analysis and Imaging Subsurface Structure via Engineering Characterizations and Integrated Geophysicals Tomography Modeling Methods  [PDF]
Andy Anderson Bery, Rosli Saad
International Journal of Geosciences (IJG) , 2012, DOI: 10.4236/ijg.2012.31011
Abstract: The geoelectrical resistivity and seismic refraction surveys which were used in this study on the test site, delivered a detailed image of the near-surface conditions in generally very good. Electrical resistivity and seismic refraction analysis proved that a combination of these integrated study of the physical environmental data provided a reasonable compromise between measurement time and image resolution. Quantitative interpretation of the resistivity and seismic models based on soil's parameters determined using laboratory practices and field survey could reproduce the range of resistivity and seismic values found on the site very well. The model explains the ambiguity in between resistivity and clayey sands found on the site and predict the dominant role of water saturation. Geophysical methods are used in this research in purpose to determine the internal structure of a soil mass. Various geophysical methods and their merits for imaging subsurface structures and condition are discussed. Seismic methods are often the most suitable because the measurements depend on the mechanical properties which are also important in the mechanical calculation of soil's behaviour analysis. Other geophysical method, such as geoelectric resistivity, is useful to determine the internal structure, but require a correlation of found boundaries with mechanical properties. This research was conducted to investigate the subsurface structures and conditions through geotechnical engineering properties and its geophysical characteristics. The computation analysis is used in this research in purpose to investigate clayey sand soil's behaviour. Electrical resistivity test and engineering laboratory practices such as soil strength test, liquid limit test, plastic limit test and grain size distribution test was also carried out to investigate clayey sand soil behaviour in Batu Uban, Penang area during monitoring period.
Tropical Clayey Sand Soil's Behaviour Analysis and Its Empirical Correlations via Geophysics Electrical Resistivity Method and Engineering Soil Characterizations  [PDF]
Andy Anderson Bery, Rosli Saad
International Journal of Geosciences (IJG) , 2012, DOI: 10.4236/ijg.2012.31013
Abstract: Soil is a heterogeneous medium which consist of liquid, solid, and gaseous phases. The solid and liquid phases play an essential role in soil spontaneous electrical phenomena and in behaviour of electrical fields, artificially created in soil. Soil electrical properties are the parameters of natural and artificially created electrical fields in soils and influenced by distribution of mobile electrical charges, mostly inorganic ions, in soils. Geophysical method of electrical resistivity was used for measuring soil electrical properties and tested in different soil studies. Laboratory tests were performed for the numbers of clayey sandy soil samples taken from Batu Uban area. The empirical correlations between electrical parameter, percentage of liquid limit, plastic limit, plasticity index, moisture content and effective soil cohesion were obtained via curvilinear models. The ranges of the soil samples are changed between 229 Ωm to 927 Ωm for resistivity (ρ), 6.01 kN/m2 to 14.27 kN/m2 for effective soil cohesion (C'), 35.08 kN/m2 to 51.47 kN/m2 for internal fiction angle (?'), 38% to 88% for moisture content (W), 33% to 78% for liquid limit (WL), 21% to 43% for plastic limit (Wp) and 11% to 35% for plasticity index (PI). These empirical correlations model developed in this study provides a very useful tool to relate electrical resistivity with effective cohesion, internal friction angle (strength), void ratio, porosity, degree of saturation, moisture content, liquid limit, plastic limit and plasticity index in context of medium-grained of clayey sandy soil that is, its fluid behaviours.
Correlation of Seismic P-Wave Velocities with Engineering Parameters (N Value and Rock Quality) for Tropical Environmental Study  [PDF]
Andy A. Bery, Rosli Saad
International Journal of Geosciences (IJG) , 2012, DOI: 10.4236/ijg.2012.34075
Abstract: The physical parameters of the subsurface from the environmental site investigation are important for geoscientists and engineers to understand and very low cost-effective method, especially when combined with geophysical (seismic) and geotechnical (borehole) surveys. These parameters can be estimated from other obtained parameters. In this study, P-wave velocities of materials (soils and rocks) are studied both in the laboratory and field measurement. The obtained P-wave velocities are then compared with the engineering parameters such N values, rock quality, friction angle, relative density, velocity index, density and penetration strength from boreholes. The empirical correlations were also found in this study for selected parameters. The estimation of engineering parameters from P-wave seismic velocity values is applicable for tropical environmental study. It is found that, the ratio (VFIELD/VLAB) when squared, was numerically close to the value of percentage RQD. We found that the empirical correlation for tropical environmental study is VP = 23.605(N) - 160.43 and the regression found is 0.9315 (93.15%). Meanwhile, the empirical correlation between P-wave velocities and RQD values is found as VP = 21.951(RQD) + 0.1368 and the regression found is 0.8377 (83.77%). The correlation between apparent P-wave velocities with penetration strength for both study sites are found as and the regression coefficient is found as 0.9756. Thus, this study helps for the estimation and prediction the properties of the subsurface material (soils and rocks) especially in reducing the cost of investigation and increase the understanding of the Earth’s subsurface characterizations physical parameters.
Electroencephalographic Recordings in the Canine: Effects of Low Dose Medetomidine or Dexmedetomidine Followed by Atipamezole  [PDF]
Laura C. Tepper, Andy Shores
Open Journal of Veterinary Medicine (OJVM) , 2014, DOI: 10.4236/ojvm.2014.42002
Abstract:

Objectives: 1) To describe electroencephalogram (EEG) appearance in the awake dog and compare these results with EEG recordings after low dose medetomidine (2 μg/kg IV) followed by atipamezole (10 μg/kg, IM); 2) To institute EEG recordings after low dose medetomidine or dexmedetomidine as a standard of practice if focal abnormalities and amplitudes were not significantly altered by pharmaceuticals in Phase 1 of this study. Methods: Electroencephalograms were performed on eight clinical canine patients with suspected intracranial disease involving the prosencephalon. A five lead montage was used to record the EEGs. Each dog had an awake, baseline recording followed by an EEG performed after administration of low dose medetomidine (2 μg/kg IV) then atipamezole (10 μg/kg, IM). In the second phase of this study, the same dose of medetomidine or dexmedetomidine at 1 μg/kg IV and atipamezole (10 μg/kg, IM) were used in the evaluation of 20 clinical patients with suspected neurologic disease. Results: In Phase 1, awake recordings were laced with movement artifacts. After medetomidine and atipamezole, EEG waveforms were slower. Following atipamezole, however, the frequencies were observed to increase with time. Statistical evaluation revealed significantly more artifacts in baseline recordings. No statistically significant change was observed in focal abnormalities or amplitude. In Phase 2, the a2-adrenoreceptor agonists followed by atipamezole without the use of lidocaine produced clinically reliable results. Clinical Significance: Quality and diagnostic electroencephalogram (EEG) recordings are frequently inconvenient to obtain in the awake dog. Movement results in artifacts and dislodged leads. Administration of low dose medetomidine or dexmedetomidine followed by atipamezole reliably reduced the impact of movement artifacts and produced clinically valid EEG recordings in dogs.

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