Sistem Informasi Deteksi Kehadiran dan Media Penyampaian Pengumuman Dosen dengan Menggunakan Teknik Pengenalan Qr Code

“Information Systems of Attendance Detection and Media Submission of Lecturer Announcement by Using Engineering Introduction QR Code "is an application that serves to support the process of disseminating information on the campus of Muhammadiyah University of Riau to become more effective and efficient and facilitate students in obtaining information. This application can be used by Lecturers and Students as recipient of information. The results of this study is a web-based application that can support the process of disseminating information on the campus of the University of Muhammadiyah Riau. The research was built using the Waterfall software development method, using UML to document, specify, and model the system. Implemented using PHP programming language using Laravel Framework and using MySQL database and other supporting software

Active Queue Management for Fair Resource Allocation in Wireless Networks

This paper investigates the interaction between end-to-end flow control and MAC-layer scheduling on wireless links. We consider a wireless network with multiple users receiving information from a common access point; each user suffers fading, and a scheduler allocates the channel based on channel quality,but subject to fairness and latency considerations. We show that the fairness property of the scheduler is compromised by the transport layer flow control of TCP New Reno. We provide a receiver-side control algorithm, CLAMP, that remedies this situation. CLAMP works at a receiver to control a TCP sender by setting the TCP receiver's advertised window limit, and this allows the scheduler to allocate bandwidth fairly between the users

Determination of levels of fluoride and trace metal ions in drinking waters and remedial measures to purify water

Fluoride is recognized to be most effective caries-preventive agent. The main source of fluoride for people is generally food and drinking water. For this reason, fluoride and other metal ion concentrations in the drinking water samples were estimated. For the determination of fluoride, Na, Li and K an ion – meter and flame photometer were used. While the concentrations of other metal ions (Mn, Cd, Co, Ni, Pb, Fe, Zn and Cu) were estimated by flame atomic absorption spectrophotometer.Statistical parameters and multiple correlations between paired water samples were also calculated. For the purification of water, adsorption technique was adopted using Al2O3 and Al2O3 -Pb 0.1, Al2O3 – Pb 0. 01 doping systems. Adsorption isotherm equations were also applied to calculate the values of respective constants. Thermodynamic parameters (DGo, DHo and DSo) were also calculated. According to theresults obtained, the metal ion concentration in the drinking waters in the studied area are within the safe drinking water regulation limits and also the fluoride level is lower then the permissible limit forflouride

The Current Account Dynamics in Pakistan: An Intertemporal Optimisation Perspective.

The intertemporal approach has become a basic reference in open economy macroeconomics for the theoretical understanding of the current account. Since the early 1980s there has been substantial growth in the literature using this approach to analyse the behaviour of the current account movements for different countries and time periods. The theoretical refinements in the approach have led most of the empirical studies in the literature today to apply the basic present value model of current account (PVMCA) and its extended version to examine the fluctuations in the current account balances of both developed and developing countries. Using data on Pakistan over the period 1960 to 2009, the present study finds that the basic model fails to predict the dynamics of the actual current account. However, extending the basic model to capture variations in the world real interest rate and the real exchange rate significantly improves the fit of the intertemporal model. The extended model predictions better replicate the volatility of current account data and better explain historical episodes of current account imbalance in Pakistan. JEL classification: C32, F32, F41 Keywords: Current Account, Present Value Models, Consumption-based Interest Rate, Pakista

The Current Account Deficit Sustainability: An Empirical Investigation for Pakistan

The existence of large and persistent current account deficit is always viewed with great concerns, as it usually leads an economy to a state of insolvency due to building up excessive net foreign debt. As the current account deficit is a persistent feature of Pakistan’s economy, therefore, it becomes essential to empirically investigate, whether this deficit is sustainable or not. To this end, the present study has applied two alternative approaches, namely, the intertemporal approach to the current account and the intertemporal solvency approach, in order to get more convincing evidence on the sustainability issue in Pakistan using the time series data over the period 1960 to 2012. From the perspective of both the approaches, Pakistan’s current account deficit is on a sustainable path and the macroeconomic policies of the country remained effective in securing it from any external sector crisis. JEL Classification: C32, F32, F41 Keywords: Current Account Deficit, Intertemporal Budget Constraint, VAR Model, Cointegratio

Probabilitas Kecelakaan Kapal Tenggelam di Wilayah Selat Makassar

Tingginya kasus kecelakaan kapal tenggelam di Indonesia yang terjadi selama ini harus menjadi perhatian semua pihak, terlebih lagi untuk wilayah selat Makassar. Tujuan penelitian ini adalah merancang skenario kegagalan untuk beberapa faktor penyebab kecelakaan kapal tenggelam yang disajikan dalam bentuk Fault Tree. Penelitian ini dilakukan dengan metode Fault Tree Analysis (FTA). Metode FTA digunakan untuk mengidentifikasi resiko yang berperan terhadap terjadinya kegagalan. Metode ini dilakukan dengan pendekatan yang bersifat top down, yang diawali dengan asumsi kegagalan atau kerugian dari kejadian puncak (top event) kemudian merinci sebab-sebab suatu top event sampai pada suatu kegagalan dasar (root cause) pada level sistem. Hasil Penelitian menunjukkan bahwa faktor lingkungan berbahaya merupakan faktor yang paling berpengaruh terhadap terjadinya kecelakaan kapal tenggelam dengan nilai probabilitas 0,146551. Sedangkan nilai probabilitas kecelakaan kapal tenggelam di wilayah perairan selat Makassar dengan metode FTA adalah 0,151461

Effect of farmyard manure on senescence, nitrogen and protein levels in leaves and grains of some cowpea vareities

The effect of farmyard manure was studied on senescence, nitrogen and protein content of the leaves and grains of cowpea. The experimental site for this study was situated at the International Institute of Tropical Agriculture (IITA), Kano Station, Nigeria. The cowpea varieties used in this experiment were Kanannado a local variety and IT89 KD – 288 an improved variety, two treatments were used for the experiment single manure treatment (manurexl), and double manure treatment (manurex2) at the ratio of 5:1 soil to manure and the control (no manure added). Plastic pots of 250mm diameter and 17.5cm for both length and height were used in this study. The pots were arranged in completely randomize block design and labeled appropriately using white and green plastic tags according to the plant treatment applied. The rainy season trial was carried out between August 2006 to November, 2006 while the dry season trial was carried out between October, 2007 to January, 2008 onset of senescence, days to 50% senescence, 90% senescence and days to total death of the plants occurred earlier in IT89KD – 288 than in Kanannado, while comparison between the treatments showed that senescence started earlier in plant treated with double manure treatment than those treated with single manure treatment. Between the two seasons, senescence started earlier rainy season than in dry season. On the other hand nitrogen and protein content of the leaves and grains were higher in IT89KD – 288 than in Kanannado, also between the treatment double manure treatment induced higher nitrogen protein content of leaves and grains. More nitrogen and protein, content of leaves and grains were obtained during the dry season trial than in the rainy season trial

Analisa Pengaruh Grid Rasio Dan Faktor Eksposi Terhadap Gambaran Radiografi Phantom Thorax

Analysis of the influence of the grid has been determined and the ratio of the radiographic expose factor thorax phantom with grid ratio and expose factor variation to analyze the density and contrast on chest radiographs. Research methods using phantom anthoropomorphic, densitometer and X-ray equipments. Irradiation conditions are given with some expose factor variation is 55 kV 16 mAs, 65 kV 8 mAs, 75 kV 3.2 mAs, and a variety of grid ratio 6:1 and 8:1. Research data is processed and made in the form of a graph of the density of the contrast of the grid ratio and expose factor variation. The higher the ratio of the grid will cause a decrease in the density of radiographs, but does not always lead to increasing or decreasing the contrast radiographs. Results overview on to 5 thorax phantom organ that produces the highest optical density in the use of expose factors 65 kV, 8 mAs on both the grid ratio