Design and construction of 4.27M (LOA) rowing transport boat (punt) for inland water bodies

Flat bottom boat (Rowing Punt) 4.27M length overall (LOA) was designed and constructed using plywood and fiber glass materials. The boat posses features like easy construction stability and high capacity to carry load. Other features include least cost light weight, shallow draft of 9cm easy maneuverability. The light displacement (weight empty) is 96.6kg which is similar to local boat of same size. The capacity of the boat 544kg (8 person) and total cost of production was N41,150.00 which is not beyond the reach of an average fisherman. The Rowing Punt easily propelled by oaring which makes it adequate for fishing activities on shallow water bodies. Such easily maneuvered craft can also be used for recreation which include, sport fishing, and boating

On the EDM Cancellations in D-brane models

We analyze the possibility of simultaneous electron, neutron, and mercury electric dipole moment (EDM) cancellations in the mSUGRA and D--brane models. We find that the mercury EDM constraint practically rules out the cancellation scenario in D-brane models whereas in the context of mSUGRA it is still allowed with some fine-tuning.Comment: 10 pages, to appear in Phys. Rev. Let

Empirical modelling of geotechnical strength based on index properties: a case of patti formation, southern bida basin, nigeria

The strength properties of geo-materials are paramount to the stability or otherwise of civil engineering structures. However, the determination of some of these properties such as California Bearing Ratio (CBR) and Unconfined Compressive Strength (UCS) is costly and time-consuming. This necessitates the generation of models that can quickly predict the strength properties from cost-effective and less time-consuming index properties of the same geo-materials. In this study, an attempt has been made to predict the CBR and UCS values from Atterberg limit tests for sediments derived from Patti Formation, Southern Bida Basin, Nigeria. The tests were performed following appropriate codes of the British Standard Method for testing materials. Both linear and polynomial fitting models were employed for regression analysis between the index and strength parameters. The results showed that Liquid Limit (LL), Plastic Limit (PL), and Shrinkage Limit (SL) are strongly correlated with UCS and CBR, having R2 ranging from 0.8-0.91. The equations can be used to quickly predict UCS and CBR in areas with similar geology. Similar studies are recommended in other parts of the country to aid the regional evolution of models for rapid strength characterization of geo-materials. &nbsp

A Comparison of the Semi Analytical and Numerical Method in Solving the Problem of Magnetohydrodynamics Flow of a Third Grade Fluid between Two Parallel Plates

The main purpose of this study is to compare a semi-analytical method and numerical method namely the homotopy perturbation method (HPM) and finite difference method (FDM) respectively. These methods were employed for solving the nonlinear problem of the magnetohydrodynamic (MHD) couette flow of third-grade fluid between the two parallel plates. The comparison was made between a solution of HPM and FDM against a solution obtained from regular perturbation and the results are tabulated. From a computational viewpoint, it is revealed that the HPM is more reliable and efficient than FDM. Also, the results show that the FDM requires slightly more computational effort than the HPM, although the HPM yields more accurate results than the FDM. &nbsp

Proximate Composition and Amino Acid Profile of Raw and Cooked Black Variety of Tiger nut (Cyperus esculentus L.) Grown in Northeast Nigeria

Tiger nut (Cyperus esculentus L.) is an underutilized tuber of family Cyperaceae which produces rhizomes from the base of the tuber that is somewhat spherical. The three varieties of yellow, brown and black tiger nut are grown in Nigeria. Proximate and amino acid compositions of raw and cooked black variety of Cyperus esculentus were investigated using standard analytical techniques. The respective proximate composition values (%) for the raw and cooked samples were: Moisture (3.73 and 4.66), ash (2.57 and 3.38), crude fat (8.94 and 9.92), crude protein (12.09 and 9.25), crude fibre (7.02 and 4.52), and carbohydrate (65.66 and 69.29). The calculated fatty acids and metabolizable energy for the raw and cooked samples were 7.15 and 7.94%; 1652.53 and 1702.22 kJ/100g, respectively. The values of metabolizable energy in this study showed that both samples have energy concentrations more favourable than cereals. The amino acid profile revealed that raw and cooked samples of Cyperus esculentus contained nutritionally useful quantities of most of the essential amino acids with total essential amino acid (TEAA) (with His) were 45.69 and 48.25%, respectively. The value of predicted protein efficiency ratio (P–PER) for the raw tuber was 2.77, the value is higher than the reported P–PER values of some legumes in the literature. However, essential amino acid supplementation may be required in Ile, Leu, TSAA and Val when comparing the EAA in this report with the recommended FAO/WHO provisional pattern. The limiting EAAs in the raw and cooked Cyperus esculentus tuber were Leu and TSAA, respectively. Keywords: Proximate, amino acids, tigernu

Perancangan Software Defined Radar untuk Radar Pulsa dan Radar FMCW

- Software Defined Radio (SDR) merupakan sistem komunikasi radio berbasis software yang saat ini mulai banyak diimplementasikan dan menunjukkan potensi yang besar. Tingginya efisiensi dalam hal biaya dibandingkan dengan sistem konvensional berbasis perangkat menjadi motivasi bagi berkembangnya konsep ini diberbagai aplikasi. Salah satu aplikasi yang dapat diterapkan menggunakan konsep SDR adalah sistem komunikasi Radar, Software Defined Radar (SDRadar). Radar berbasis software diharapkan dapat menurunkan biaya pembuatan hardware, serta dapat mendukung perancangan Radar yang dapat melakukan banyak fungsi dan lebih flexible untuk melakukan konfigurasi ulang. Radar multifungsi dapat dibangun dengan berbasis software yakni mulai dari pengaturan jenis sinyal, frekuensi operasi, hingga pada tahap pemrosesan sinyal radar. Penelitian ini merancang FMCW Radar menggunakan platform SDR. Simulasi dilakukan dengan mencoba posisi objek yang berbeda, dengan nilai SNR yang berbeda. Hasil simulasi menunjukkan implementasi konsep SDR untuk Radar dapat mendukung fleksibilitas rekonfigurasi parameter Radar. Untuk spesifik radar yang disimulasikan diperoleh bahwa SNR yang baik untuk dapat mendeteksi jarak object dengan baik (error <11%) ialah diatas 20dB. Radar dengan SNR dibawah 20 dB tidak dapat mendeteksi jarak objek dengan baik, dimana error melebihi 50%. Radar Pulsa disimulasikan menggunakan pernagkat USRP dengan factor pengkoreksi/kalibrasi 1.376, sedangkan untuk Radar FMCW masih terdapat error sebsar 70.8%. Kata Kunci : SDR, SDRadar, FMCW Radar Absract - Software Defined Radio (SDR) is a software-based radio communication system that is currently implemented and show great potential to be developed. The efficiency in terms of cost as compared to conventional systems which based on devices is a motivation for the development of this concept in various applications. One of the applications that can be implemented utilizing the concept of SDR is Software Defined Radar (SDRadar). Radar with software based is expected to have lower cost and support the feasibility of Radar to perform in many functions and more flexible to be reconfigured. This research implement the FMCW Radar using SDR platform. Simulations carried out by trying different object positions, with different SNR values. The simulation results show the implementation concept of SDR's Radar can support the flexibility of Radar parameter reconfiguration. For specific simulated radar shows that a suitable SNR value to detect the distance of object (error <11%) is above 20dB. Radar with SNR under 20 dB could not detect the distance of objects well, where the error exceeds 50%. Radar Pulse also simulated using USRP with factor correction or calibration factor of 1,376, while for FMCW with USRP still obtain high error of about 70.8%

Architecture in Sudan: The Post–Independence Era (1956-1970). Focus on the Work of Abdel Moneim Mustafa

This article is part of a study on the Sudanese social and political context during the formation of the Modern Movement and the manifestations in built form and spatial expression during the period 1900-1970. The study has been on–going for several years and includes a literature search, local surveys (of unpublished and undocumented information) as well as photographs taken by the authors, sourced from architects or published material. It is argued that the Sudanese response to the International Style was in fact early experimentation in critical regionalism. The most notable architectural heritage in Sudan are the archaeological remains at Kerma and Napata as well as the remains of ancient Meroe about 180 km north of Khartoum. These cultures demonstrated sophistication in building materials and construction techniques. Due to climate changes, political changes and religious changes over a large stretch of time (642AD with the signing of the Bagt Treaty–1898 at the demise of the Mahdist era) the qualities of the built environment became more transient and rudimentary in character with a greater focus on manifesting tradition through body images, clothing and rituals that were not necessarily tied to a particular physical location rather than through monuments. With foreign interest in the strategic location of the Sudan, and as a part of the scramble for Africa, came specific stylistic and technical manifestations

Impact of Public External Debt on Exchange Rate in Nigeria

With continuous increase in public expenditures, and low capital formation in many developing countries, many governments have resorted into borrowing either or both within and outside the country. However, most borrowings come with interest attached, which results in debt servicing. Serving external debt may involve demand for foreign currency which tends to affect the exchange rate of the country. Hence, this study examines the impact of public external debt on exchange rate in Nigeria. Using the Ordinary Least Square, on the secondary data sourced from the CBN and DMO among other sources, findings reveals that all the dependent variables, that is, external debt, debt service payment and foreign reserve proved to be statistically significant in explaining exchange rate fluctuation in Nigeria within the period of observation, with debt service payment having the strongest effect (Coeff: 0.4443). Based on the finding, the study recommends that government should ensure that all public borrowing, where and when necessary, be directed towards productive economic activities which can generate returns to service and pay up the debt at maturity. Keywords: Public Debt, Foreign reserve, Exchange rate, Expenditur

Flavour-Dependent CP Violation and Natural Suppression of the Electric Dipole Moments

We revisit the supersymmetric CP problem and find that it can be naturally resolved if the origin of CP violation is closely related to the origin of flavour structures. In this case, the supersymmetry breaking dynamics do not bring in any new CP-violating phases. This mechanism requires hermitian Yukawa matrices which naturally arise in models with a U(3) flavour symmetry. The neutron electric dipole moment (NEDM) is predicted to be within one-two orders of magnitude below the current experimental limit. The model also predicts a strong correlation between A_{CP}(b --> s gamma)and the NEDM. The strong CP problem is mitigated although not completely solved.Comment: revtex, 4 page