Coherent and Differential Downlink Space-Time Steering Aided Generalised Multicarrier DS-CDMA

This paper presents a generalised MultiCarrier Direct Sequence Code Division Multiple Access (MC DS-CDMA) system invoking smart antennas for improving the achievable performance in the downlink. In this contribution, the MC DSCDMA transmitter employs an Antenna Array (AA) and Steered Space-Time Spreading (SSTS). Furthermore, the proposed system employs both Time and Frequency (TF) domain spreading for extending the capacity of the system, which is combined with a user-grouping technique for reducing the effects of Multi-User Interference (MUI). Moreover, to eliminate the high complexity Multiple Input Multiple Output (MIMO) channel estimation required for coherent detection, we also propose a Differential SSTS (DSSTS) scheme. More explicitly, for coherent SSTS detection MVNr number of channel estimates have to be generated, where M is the number of transmit AAs, V is the number of subcarriers and Nr is the number of receive antennas. This is a challenging task, which renders the low-complexity DSSTS scheme attractive. Index Terms—MIMO, MC DS-CDMA, beamforming, spacetime spreading, differential space-time spreading

Analysis of Some Reliability Measures of a Deteriorating Reinforced Concrete Structure

In this paper, we study the reliability and availability characteristics of two-stage deterioration reinforce concrete structure .Failure and repair times are assumed exponential. The explicit expressions of reliability and availability characteristics such as mean time to system failure (MTSF), steady-state availability and busy period are derived using Kolmogorov forward equations method. Various cases are analyzed graphically to investigate the impact of system parameters on MTSF, availability and busy period   Keywords: Reliability, deterioration, reinforce concret

Low-lying quadrupole collective states of the light and medium Xenon isotopes

Collective low lying levels of light and medium Xenon isotopes are deduced from the Generalized Bohr Hamiltonian (GBH). The microscopic seven functions entering into the GBH are built from a deformed mean field of the Woods-Saxon type. Theoretical spectra are found to be close to the ones of the experimental data taking into account that the calculations are completely microscopic, that is to say, without any fitting of parameters.Comment: 8 pages, 4 figures, 1 tabl

A Delayed Black and Scholes Formula I

In this article we develop an explicit formula for pricing European options when the underlying stock price follows a non-linear stochastic differential delay equation (sdde). We believe that the proposed model is sufficiently flexible to fit real market data, and is yet simple enough to allow for a closed-form representation of the option price. Furthermore, the model maintains the no-arbitrage property and the completeness of the market. The derivation of the option-pricing formula is based on an equivalent martingale measure

Integrating ICT in Traffic Police Department in Uganda: Design and Development of Traffic Case Management System (TCRIS)

The study was about the development of Traffic Case Records Information System (TCRIS) that would ease storage and retrieval of traffic cases in the Traffic Department of the Uganda Police. The method used to manage traffic cases is manual; information collected daily is written on paper and stored in files for reference, thus making the captured cases susceptible to loss, easy access by unauthorized people and destruction. The researcher set out to study the current system, analyze the needs and then improve on the system by designing and developing a Traffic Case Records Information System. Data collection techniques such as interviews and observation were applied to get the necessary information from the Traffic officers in the Traffic Department at the Central Police Station, Kampala. The system developed captures the defaulters’ bio data, traffic offence committed and the charge for the traffic offence. The TCRMS makes the use of the camera that captures the photo of the defaulter and the biometric gadget that captures the defaulter’s thumb print for police reference. All these are centrally stored in the database but are sharable with migrations department, Bank of Uganda (BoU) and Uganda Revenue Authority (URA) which government departments work closely with police in regard to such offences. Different programming languages were used during the development of the system including Visual Basic for the front end and SQL Server2005 for the back end. The system is thus user friendly in the way it inserts, retrieves and updates user information. Keyword: Traffic, Records management, court, customer car

A survey on drug related problems in cervical cancer patients receiving chemotherapy in Ahmadu Bello University Teaching Hospital Zaria

A drug-related problem (DRP) is an event or circumstance involving drug therapy that actually or potentially interferes with desired outcome. The complexities in drug regimens used in cervical cancer chemotherapy has led to more serious problems. The aim of this study is to investigate DRPs in cervical cancer patients receiving chemotherapy. The study was a retrospective cross sectional study on patients receiving cervical cancer chemotherapy at Ahmadu Bello University Teaching Hospital Zaria (ABUTH). Patients’ medication charts were reviewed from July, 2015 to June, 2016. Data were collected using the Pharmaceutical Care Network Europe (PCNE) Classification of DRP V 6.20. A total of 224 DRPs cases were identified from 65 cervical cancer patients. The DRPs were mostly on treatment effectiveness (28.1%), adverse reaction (29.0%), and cost (26.8%), while the causes were majorly drug selection (28.1%) and dose selection (29.0%). The risk factors for the DRPs were found to be comorbidities and polypharmacy. In conclusion, DRPs were common among cervical cancer patients receiving chemotherapy at ABUTH. Pharmacist interventions to achieve a better therapeutic outcome are necessary.Keywords: Cervical cancer, chemotherapy, drug related problem, pharmacist, polypharmac

Bronchodilator activity of Ocimum sanctum Linn. (tulsi) in mild and moderate asthmatic patients in comparison with salbutamol: a single-blind cross-over study

Background: Bronchial asthma is one of the commonest chronic inflammatory diseases. The drugs available to treat bronchial asthma such as, beta-2 agonists, though very effective are associated with adverse effects. Therefore, the Ocimum sanctum (Tulsi) which was shown to have antiasthmatic activity in Ayurveda, is evaluated in this study.Objectives: To evaluate the bronchodilator activity of Ocimum sanctum Linn. in mild and moderate asthma and compare its efficacy with the standard bronchodilator drug, Salbutamol.Methods: This is a single-blind cross-over study. Capsules of Ocimum sanctum Linn. (200 mg, twice daily) and Salbutamol sulphate (2 mg, twice daily) were administered in 41 patients. Each drug was administered for a period of one week with a washout period of one week between the two drug schedules. FEV1 and PEFR were recorded in these patients to assess the bronchodilator activity before the drug administration, on 4th and on 7th day of administration of Ocimum sanctum and the parameters obtained were compared with that of the standard drug, Salbutamol.Results: Ocimum sanctum 200mg twice daily produced significant improvement in both FEV1 and PEFR values, on 4th and 7th day and also produced improvement in symptoms of asthma. On comparing the results with that of Salbutamol 2mg twice daily, the bronchodilator activity of Ocimum sanctum was found to be less efficacious, where Salbutamol produced very highly significant improvement in FEV1 and PEFR values on both 4th and 7th day.Conclusions: Our results suggest that Ocimum sanctum Linn. possesses significant bronchodilator activity in mild and moderate bronchial asthma

Praziquantel coverage in schools and communities targeted for the elimination of urogenital schistosomiasis in Zanzibar: a cross-sectional survey

© 2015 Knopp et al. Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated. The attached file is the published version of the article

Evaluating the ecological and social targeting of a compensation scheme in Bangladesh.

Conservation payments are increasingly advocated as a way to meet both social and ecological objectives, particularly in developing countries, but these payments often fail to reach the 'right' individuals. The Government of Bangladesh runs a food compensation scheme that aims to contribute to hilsa (Tenualosa ilisha) conservation by improving the socioeconomic situation of households affected by hilsa sanctuary fishing bans. Analysing data from a household survey of compensation recipients and non-recipients, we identify the current correlates of compensation distribution and explore perceptions of fairness in this distribution. We find that distribution is largely spatial rather than based on the household characteristics that are supposed to determine eligibility for compensation, indicating political influence in the distribution process. We also find the compensation scheme is widely perceived to be unfair, which could be undermining its potential to compensate vulnerable fishers while improving compliance with fishing bans. The spatial distribution of compensation would shift substantially under alternative targeting scenarios that are likely to improve the cost-effectiveness of the scheme, such as targeting those who are most dependent on fishing for their livelihood. This study highlights a challenge for conservation payment schemes that aim to achieve the dual objectives of poverty reduction and ecological sustainability, particularly large-scale public schemes, and suggests that more effective targeting and transparency about the basis of payment distribution are prerequisites for schemes to be both cost-effective and socially acceptable