606 research outputs found
Micro-Finance for Women Empowerment: A Rural-Urban Analysis
This paper examined the micro-finance services towards empowerment of unprivileged women in the southwestern part of Bangladesh. A sample of 300 low profile unprivileged micro-finance service receiving women equally from rural and urban areas of Khulna district were surveyed during May, 2018. Data were collected on the usage and effectiveness of micro-finance services and were analyzed using STATA 12. Multiple regression model and descriptive statistics were used to interpret data. Economic empowerment, social empowerment, interpersonal empowerment and political empowerment were considered to measure women empowerment. The study found that proper use of microcredit, marital status of women, educational status of women and their husbands, personal income and their position in the family were the main determinants of women empowerment. Women empowerment score remained higher in urban areas than in rural areas. The availability of micro-finance services improved the status of unprivileged low profile suburban women in terms of income generation, saving mobilization, the creation of household assets and overall poverty reduction of rural women. Thus, microfinance has been a useful tool for women empowerment and economic development in both areas but more effective in urban areas. 
PENDAMPINGAN DALAM PEMBERDAYAAN TANAH WAKAF DESA PUTAT LOR
This community service is carried out in the form of Islamic philanthropy which focuses on legalizing and empowering waqf land. The legalized waqf land is in the form of non-productive waqf as well as several prayer rooms (musala) located in the area of Putat Lor village, Krajan, Gondanglegi, in Malang district. This waqf is trying to be assisted in the legalization process by carrying out the three-stage of "heir waqf" method. This method includes observing data on the heirs whom the land being handed over, validating the heirs’ agreement, and implementing the waqf pledge. This process is carried out within three weeks
Hierarchical Design Based Intrusion Detection System For Wireless Ad hoc Network
In recent years, wireless ad hoc sensor network becomes popular both in civil
and military jobs. However, security is one of the significant challenges for
sensor network because of their deployment in open and unprotected environment.
As cryptographic mechanism is not enough to protect sensor network from
external attacks, intrusion detection system needs to be introduced. Though
intrusion prevention mechanism is one of the major and efficient methods
against attacks, but there might be some attacks for which prevention method is
not known. Besides preventing the system from some known attacks, intrusion
detection system gather necessary information related to attack technique and
help in the development of intrusion prevention system. In addition to
reviewing the present attacks available in wireless sensor network this paper
examines the current efforts to intrusion detection system against wireless
sensor network. In this paper we propose a hierarchical architectural design
based intrusion detection system that fits the current demands and restrictions
of wireless ad hoc sensor network. In this proposed intrusion detection system
architecture we followed clustering mechanism to build a four level
hierarchical network which enhances network scalability to large geographical
area and use both anomaly and misuse detection techniques for intrusion
detection. We introduce policy based detection mechanism as well as intrusion
response together with GSM cell concept for intrusion detection architecture.Comment: 16 pages, International Journal of Network Security & Its
Applications (IJNSA), Vol.2, No.3, July 2010. arXiv admin note: text overlap
with arXiv:1111.1933 by other author
Effective role of the ‘loading’ dose of magnesium sulfate in the treatment of eclampsia
Background: Eclampsia is defined as the occurrence of one or more convulsions in association with the syndrome of preeclampsia. In Bangladesh, eclampsia is the 3rd major cause of maternal death. Magnesium sulfate is now the drug of choice for women with eclampsia for controlling convulsion with strong evidence that it is better than diazepam, phenytoin or lytic cocktail. Aim of the study was to find out the effective role of loading dose of magnesium sulfate in the treatment of the convulsion in eclampsia.Methods: Prospective comparative study. In the Department of Obstetrics and Gynaecology, Rajshahi Medical College Hospital (RMCH)" from January 2008 to December 2008. A total of 100 eclamptic patients who are eligible for magnesium sulfate therapy were purposively assigned to receive either only loading "dose or traditional dose for control of convulsion. Data was organized and the results were presented in tables, figures, diagram etc. by using SPSS-10 and MS-Excel 2016.Results: The mean (±SD) convulsion (fit) and delivery interval was 7.95±1.33. Regained consciousness was predominant 28(56.0%) patients after initiation of treatment. Maternal death was found 1 (2.00%). The cause of maternal mortality was due to renal failure. The mean (±SD) respiratory rate was 20.2±4.19min. Normal urine was found 43(86.0%). Normal knee jerks were found 45 (90.0%). No toxicity developed in any group assessed by the parameters like respiratory rate, urine volume and knee jerks.Conclusions: For the above reasons eclampsia can be treated effectively by only loading dose of Mgs04 in primary as well as tertiary level hospital which will significantly reduce the maternal morbidity and mortality
Structure-Electronic Property Relationships of 2D Ruddlesden-Popper Tin- And Lead-based Iodide Perovskites
Two-dimensional (2D) halide perovskites are receiving considerable attention for applications in photovoltaics, largely due to their versatile composition and superior environmental stability over three-dimensional (3D) perovskites, but show much lower power conversion efficiencies. Hence, further understanding of the structure-property relationships of these 2D materials is crucial for improving their photovoltaic performance. Here, we investigate by means of first-principles calculations the structural and electronic properties of 2D lead and tin Ruddlesden-Popper perovskites with general formula (BA)2An-1BnI3n+1, where BA is the butylammonium organic spacer, A is either methylammonium (MA) or formamidinium (FA) cations, B represents Sn or Pb atoms, and n is the number of layers (n = 1, 2, 3, and 4). We show that the band gap progressively increases as the number of layers decreases in both Sn- and Pb-based materials. Through substituting MA by FA cations, the band gap slightly opens in the Sn systems and narrows in the Pb systems. The electron and hole carriers show small effective masses, which are lower than those of the corresponding 3D perovskites, suggesting high carrier mobilities. The structural distortion associated with the orientation of the MA or FA cations in the inorganic layers is found to be the driving force for the induced Rashba spin-splitting bands in the systems with more than one layer. From band alignment diagrams, the transfer process of the charge carriers in the 2D perovskites is found to be from smaller to higher number of layers n for electrons and oppositely for holes, in excellent agreement with experimental studies. We also find that, when interfaced with 3D analogues, the 2D perovskites could function as hole transport materials.</p
Loss functions, utility functions and Bayesian sample size determination.
PhDThis thesis consists of two parts. The purpose of the first part of the research is
to obtain Bayesian sample size determination (SSD) using loss or utility function
with a linear cost function. A number of researchers have studied the Bayesian SSD
problem. One group has considered utility (loss) functions and cost functions in
the SSD problem and others not. Among the former most of the SSD problems are
based on a symmetrical squared error (SE) loss function. On the other hand, in
a situation when underestimation is more serious than overestimation or vice-versa,
then an asymmetric loss function should be used. For such a loss function how
many observations do we need to take to estimate the parameter under study? We
consider different types of asymmetric loss functions and a linear cost function for
sample size determination. For the purposes of comparison, firstly we discuss the
SSD for a symmetric squared error loss function. Then we consider the SSD under
different types of asymmetric loss functions found in the literature. We also introduce
a new bounded asymmetric loss function and obtain SSD under this loss function.
In addition, to estimate a parameter following a particular model, we present some
theoretical results for the optimum SSD problem under a particular choice of loss
function. We also develop computer programs to obtain the optimum SSD where the
analytic results are not possible.
In the two parameter exponential family it is difficult to estimate the parameters
when both are unknown. The aim of the second part is to obtain an optimum decision
for the two parameter exponential family under the two parameter conjugate
utility function. In this case we discuss Lindley’s (1976) optimum decision for one
6
parameter exponential family under the conjugate utility function for the one parameter
exponential family and then extend the results to the two parameter exponential
family. We propose a two parameter conjugate utility function and then lay out the
approximation procedure to make decisions on the two parameters. We also offer a
few examples, normal distribution, trinomial distribution and inverse Gaussian distribution
and provide the optimum decisions on both parameters of these distributions
under the two parameter conjugate utility function
Tidal intrusion within a mega delta: an unstructured grid modelling approach
The finite volume community ocean model (FVCOM) has been applied to the Ganges-Brahmaputra-Meghna (GBM) delta in the northern part of the Bay of Bengal in order to simulate tidal hydrodynamics and freshwater flow in a complex river system. The delta region is data-poor in observations of both bathymetry and water level; making it a challenge for accurate hydrodynamic models be configured for and validated in this area. This is the first 3D baroclinic model covering the whole GBM delta from deep water beyond the shelf break to 250 km inland, the limit of tidal penetration.
This paper examines what controls tidal penetration from the open coast into an intricate system of river channels. A modelling approach is used to improve understanding of the hydrodynamics of the GBM delta system. Tidal penetration is controlled by a combination of bathymetry, channel geometry, bottom friction, and river flow. The simulated tides must be validated before this delta model is used further to investigate baroclinic processes, river salinity and future change in this area. The performance of FVCOM tidal model configuration is evaluated at a range of sites in order to assess its ability to capture water levels which vary over both a tidal and seasonal cycle.
FVCOM is seen to capture the leading tidal constituents well at coastal tide gauge stations, with small root-mean-squared errors of 10 cm on average. Inland, the model compares favourably with twice daily observed water levels at thirteen stations where it is able to capture both tidal and annual timescales in the estuarine system. When the river discharge is particularly strong, the tidal range can be reduced as the tide and river are in direct competition.
The bathymetry is found to be the most influential control on water levels within the delta, though tidal penetration can be significantly affected by the model's bottom roughness, and the inclusion of large river discharge. We discuss the generic problem of implementing a model in a data-poor region and the challenge of validating a hydrodynamic model from the open coast to narrow river channels
Fabrication and characterization of high speed resonant cavity enhanced Schottky photodiodes
Ankara : Department of Physics and Institute of Engineering and Science, Bilkent University, 1996.Thesis (Master's) -- Bilkent University, 1996.Includes bibliographical references leaves 75-78.High speed, high external quantum efficiency and narrow spectral linewidth make
resonant cavity enhanced (RC E) Schottky photodetector a good candidate for
telecommunication applications. In this thesis, we present our work for the design,
fabrication and characterization of a RCE Schottky photodiode with high quantum
efficiency and high speed. We present experimental results on a RCE photodiode
having an operating wavelength of 900 nm. The absorption takes place in a thin
InGaAs layer placed inside the GaAs cavity. The active region was grown above a highreflectivity
GaAs/AIAs quarter-wavelength Bragg reflector. The top mirror consisted
of a 200A thin Au layer which also acted as Schottky metal of the device. An external
quantum efficiency of 55% was obtained from our devices. We demonstrate that the
spectral response can be tailored by etching the top surface of the microcavity. Our
high speed measurements yielded a FW HM of 30 ps, which is the record response for
any RCE Schottky photodiode ever reported.Islam, M SaifulM.S
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