Implementation Of Internal Model Control (IMC) In Continuous Distillation Column.

Distillation columns have been widely used in chemical plants for separation process. The high nonlinearity and dynamic behavior of the column make them hard to control

Impact of Corporate Social Responsibility on Profitability of Quoted Food and Beverages Companies in Nigeria

The study examines the impact of Corporate Social Responsibility on Profitability of Quoted food and beverages companies in Nigeria from 2006 to 2015. . The population of the study consists of seventeen (17) quoted foood and beverages companies listed on the Nigerian stock exchange out of which twelve (12) were sampled based on the data availability.  The study was carried out using secondary data collected from annual reports and accounts of the sampled companies. The data collected were analysed using multiple regression techniques.  The denpendent variable is profitability which is measured with profit after tax, while the independent variable is corporate social responsibility was measured using the amount spent on corporate social responsibility activities.The result of the study reveal that corporate social responsibility has a significant positive impact on profitability with value 0.007 and the R2 of 0.3704.The study recommend that companies should embark on corporate social responsibility since it has positive correlation with companies profitability. Government should come up with clearly defined responsibility issues and should ensure its full implementation. This is because CSR activities help in raising the standard of living of communities and that the activities of the companies affect the life of the host communities. Keyword: Corporate Social Responsibility, Profitability, Food and Beverages

Sensor Data Fusion using Unscented Kalman Filter for VOR-based Vision Tracking System for Mobile Robots

This paper presents sensor data fusion using Unscented Kalman Filter (UKF) to implement high performance vestibulo-ocular reflex (VOR) based vision tracking system for mobile robots. Information from various sensors is required to be integrated using an efficient sensor fusion algorithm to achieve a continuous and robust vision tracking system. We use data from low cost accelerometer, gyroscope, and encoders to calculate robot motion information. The Unscented Kalman Filter is used as an efficient sensor fusion algorithm. The UKF is an advanced filtering technique which outperforms widely used Extended Kalman Filter (EKF) in many applications. The system is able to compensate for the slip errors by switching between two different UKF models built for slip and no-slip cases. Since the accelerometer error accumulates with time because of the double integration, the system uses accelerometer data only for the slip case UKF model. Using sensor fusion by UKF, the position and orientation of the robot is estimated and is used to rotate the camera mounted on top of the robot towards a fixed target. This concept is derived from the vestibule-ocular reflex (VOR) of the human eye. The experimental results show that the system is able to track the fixed target in various robot motion scenarios including the scenario when an intentional slip is generated during robot navigation

Efforts to Develop Bicycle Transportation in Supporting the Internal Transportation System

The Unhas Tamalanrea Campus has green open space which is one of the best urban forest areas in Makassar. This is supported by the implementation of Non-Motorized-Transport by re-developing bicycle transportation management. Campus Green Open Space is an attraction for the community to cycle, for this reason, attention to bicycle transportation facilities and connectivity with other transportation is needed so that vehicle access continues to run safely and comfortably, at the Unhas Tamalanrea Campus. This study aims to find out how the services of bicycle transportation facilities, the suitability of bicycle lanes, and development concepts can be applied at the Unhas Tamalanrea Campus.  The analysis methods used are Importance Performance Analysis (IPA), Scoring Analysis, and Map interpretation. Data collection was carried out through observation, interviews, and questionnaires. The respondents taken were cyclists at the Unhas Tamalanrea Campus using accidental sampling techniques. The results showed that the condition of bicycle transportation facilities at the Unhas Tamalanrea Campus was quite good but still needed to be improved by the guidelines and concept of campus bicycle transportation

Pengaruh Jumlah Sekat Filter Udara sebagai Upaya Meningkatkan Performance Mesin Diesel

Penambahan jumlah udara pada proses pembakaran diyakini akan dapat meningkatkan performance dari suatu mesin. Salah satunya dengan mengurangi jumlah sekat pada filter udara. Udara yang masuk ke ruang bakar terlebih dahulu akan di saring melalui filter udara agar selalu terjaga kebersihannya. Hal ini tentu saja merupakan suatu hambatan yang menghalangi udara yang akan masuk kedalam ruang bakar. Dengan pengurangan sekat pada filter udara tersebut maka hambatan yang ada akan semakin berkurang dan udara yang ada untuk proses pembakaran akan terpenuhi sehingga akan terjadi pembakaran yang sempurna. Dengan demikian penelitian bertujuan untuk mengetahui pengaruh jumlah sekat filter udara sebagai upaya meningkatkan performance mesin diesel. Penelitian ini menggunakan metode eksperimen yang menguji jumlah 153 sekat, 144 sekat dan 135 sekat. Dari setiap jumlah sekat dilakukan pengujian menggunakan variasi putaran mesin. Pada jumlah sekat filter udara 153 sekat konsumsi bahan bakar lebih hemat,dan efisiensi juga lebih tinggi. Pada jumlah sekat filter udara 144 sekat, konsumsi bahan bakar,putaran output mesin dan daya engine akan meningkat pula. Pada jumlah sekat filter udara 135 sekat, konsumsi bahan bakar akan menjadi lebih boros tetapi putaran output dan daya engine juga meningkat dengan efisiensi lebih rendah

Investigating the performance of a combined solar system with heat pump for houses

The UK government has committed to generate 20% of the country's energy from renewable sources by 2020. This paper investigates energy reduction in houses by using an innovative solar thermal collector combined with a heat pump system. The dynamic lumped parameter model for a small house is derived and the combined heating system is used to provide the typical hot water and heating requirement. The goal is to maintain thermal comfort inside the house and reduce the amount of electricity consumption used for heating and hot water. This is achieved by reducing the electricity costs through optimising the operation of the heat pump, integrating the available solar energy, and by shifting electricity consumption to the cheaper night time tariff. Models of conventional controller on–off and a multi-variable model predictive control (MPC) are developed and used for several different climatic conditions. The results showed that the model predictive controller performed best by providing better comfort, consuming less electric energy and better use of cheap night time electricity by load shifting and storing heat energy in the heating tank

UV-Light Mediated Biosynthesis of Silver Nanowires; Characterization, Dye Degradation Potential and Kinetic Studies

Herrin, a simple and eco-friendly method for the synthesis of silver nanowires (Ag-NWs) has been reported. Silver nanowires were synthesized using Psidium guajava seed extract that acted as a reducing agent as well as a stabilizing agent for silver nitrate solution. Synthesis was carried out at 50 °C temperature under continuous UV-irradiation. Silver nanowires were initially characterized by a UV-visible and FTIR spectrophotometer. In addition, morphology and particle size of synthesized Ag-NWs were determined using Field Emission Scanning Electron Microscopy and X-ray diffraction (XRD) techniques. Nanowires were found to have 12.8 μm length and 200–500 nm diameter and cubic phase morphology. Furthermore, the catalytic potential of Ag-NWs for the degradation of methyl orange dye (MO) was determined. The selected dye was degraded successfully that confirmed the catalytic potential of Ag-NWs. The authors concluded that Ag-NWs can be synthesized using plant extract having excellent morphological features as well as impressive catalytic potential

Pregnant women perceptions regarding their husbands and in-laws’ support during pregnancy: a qualitative study

Introduction: pregnancy is a stressful condition during which women require family and in-laws´ support. This study was aimed to explore the women´s perceptions regarding their husband and in-law´s support during pregnancy. Methods: by using qualitative exploratory design ten pregnant women in third trimester of pregnancy and living in joint family system were recruited through purposive sampling technique from a village of district Nowshehra, Khyber Pakhtunkhwa, Pakistan. Approval for conducting this study was obtained from Ethics Review Committee of Khyber Medical University. Data were collected from the recruited participants through face to face in-depth interviews. Data were analyzed through thematic analysis. One hundred open codes were generated from the data. Through axial coding, extra and unnecessary codes were omitted and then eleven categories were identified from open codes. Results: the identified categories were kept under three salient themes of lack of comprehensive support mechanism, physical and mental strain, and barriers to antenatal services. Perceived support of husbands and in-laws, needs and barriers to maternal and child health were discussed by the participants. Conclusion: the study findings suggest that family relationship quality might not be improved by taking interventions i.e. making policies only but the incorporation of health professionals´ support with family member´s behavior can improve maternal health

Evaluasi Konsumsi Air Beberapa Genotipe Padi untuk Potensi Efisiensi Penggunaan Air

Water use efficient varieties in rice may have good opportunity in term of economic value and scarcity of water. This study was conducted to determine water consumption among rice genotypes that conventionally cultivated as low land (IR64, IPB97-F-15, Ciherang, Mentik Wangi, and Rokan hybrid), up land (Jatiluhur, Silugonggo), and amphibian type (Way Apo Buru, that could be planted both as lowland and up land). Rice seedlings at 14 days old were transplanted in a plastic container containing 83 kg of air dried soil, 1 plant per whole and 6 plants per container. The experiment was conducted in a vinyl house, using randomized complete block design with three replications. During rice growth, water table was maintained at 2 cm above soil surface, and water was added and recorded weekly. The results showed that varieties reveal production components and yield were different significantly. Water consumptions among varieties were significantly different, ranged from 15.93 L plant-1 for IR64 to 24.13 L plant-1 for Jatiluhur, or equal with 3,639 to 4,827 m3 ha-1. Jatiluhur was the most efficient variety in using water. This finding may guide us to explore benefit of water use efficient variety as sustainable option in water management of rice cultivation