Student’s Perceptions of the Use of CBT for the Conduct of General Studies (GST) Examinations in Usmanu Danfodiyo University, Sokoto

The paper investigated the students’ perceptions of the use of CBT for the conduct of General Studies (GST) examinations in Usmanu Danfodiyo University, Sokoto. The study employed a descriptive survey design. All the 5600 undergraduate students who sat for GST examinations during the 2019/2020 academic session formed the population of the study. The Israel Model (2013) was used to determine 372 students as the sample size for the study. An instrument titled "Students’ Perceptions of Writing CBT Examination" (SPWCBTE) was used for the data collection. The instrument was validated, a pilot study was conducted, and a reliability index of 0.95 was obtained. Results from the study revealed that the students have positive views on the CBT examinations. Some of the problems confronted by students during the examinations, as indicated by the results, include system errors, login issues, and the slow nature of the systems during submission. The study concluded that the students have positive views of the CBT examinations in the university. It was recommended that the university management should be organizing presentations and workshops to promote the CBT system. Majors should be taken to ensure quality assurance and control of the ICT facilities during and after the conduct of examinations.

Astigmatism correction of convex aspheres using the subaperture stitching Hindle test

We propose an astigmatism correction method for the subaperture stitching Hindle test to measure hyperbolic convex aspheres. Astigmatic wavefront errors arise from misaligned Hindle setups, mechanical runout errors of the rotational motion for stitching, and the surface error of the target itself. Because these errors are combined, they cannot be separated in the conventional subaperture stitching Hindle tests. We exploited the rotational periodicity of each error to distinguish the surface figure error from other astigmatic error sources and rectified the Hindle test results with a third-order astigmatism. Using the subaperture stitching Hindle test, we averaged two sets of measurement data with a 180° rotational phase difference between them to calculate the astigmatic surface error. The proposed method was verified experimentally by comparing it with the results from a commercial stitching interferometer from QED Technologies; only subnanometer differences in the root-mean-square values were obtained. Therefore, the proposed method calibrated the system errors from the test surface wedge and the rotational decenter easily, thereby reducing the mechanical costs and alignment efforts and making it more accessible than a sophisticated mechanism.

PEMUNGUTAN/PENYETORAN PAJAK TRANSAKSI BENDAHARA PENGELUARAN KANTOR “X” MENGGUNAKAN INTERNET BANKING

This study aims to determine the implementation of the tasks performed by the Expenditure Treasure of “X” Office in collecting and depositing taxes using Internet Banking and the constraints experienced. By using an exploratory method, it is known that the Expenditure Treasure of “X” Office has carried out his duties in accordance with the applicable regulations. However, during the research, it was found that there was a time when the tax collection on VAT (Value Added Tax) carried out by the Expenditure Treasure of “X” Office according to PMK Number 231/PMK.03/2019 was not implemented on time. The imposition of VAT on purchases of goods above Rp2,000,000 (two million rupiah) was implemented in June 2020 which should have started April 1, 2020. Meanwhile, in carrying out the task of depositing taxes by the Expenditure Treasure of “X” Office, server down problems and system errors still often occur at the beginning of the month and towards the end of the fiscal year. Keywords : Internet Banking, exploratory, Expenditure Treasure of “X” Office, tax payment

Robust adaptive controller–observer scheme for robot manipulators: a Bernstein–Stancu approach

This article introduces a robust adaptive controller–observer structure for robotic manipulators such that the need for joints speed measurement is removed. Besides, it is presumed that the system model has uncertainties and is subject to disturbances, and the proposed method must eliminate the impact of these factors on the system response. According to this, for the first time in the robotics field, a model-free scheme is developed based on the Bernstein–Stancu polynomial. The universal approximation property of the Bernstein–Stancu polynomial enables it to accurately estimate the lumped uncertainty, including unmodeled dynamics and disturbances. Moreover, to increase the efficiency of the controller–observer structure, adaptive rules have been proposed to update polynomial coefficients. The boundedness of all system errors is proven using the Lyapunov theorem. Finally, the proposed robust Adaptive controller–observer is applied on a planer robot, and the results are precisely analyzed. The results of the proposed approach are also compared with two state-of-art powerful approximation methods.

Robot Control Using Alternative Trajectories Based on Inverse Errors in the Workspace

It is easy to realize that most robots do not move to the desired endpoint (Tool Center Point (TCP)) using high-resolution noncontact instrumentation because of manufacturing and assembly errors, transmission system errors, and mechanical wear. This paper presents a robot calibration solution by changing the endpoint trajectories while maintaining the robot’s control system and device usages. Two independent systems to measure the endpoint positions, the robot encoder and a noncontact measuring system with a high-resolution camera, are used to determine the endpoint errors. A new trajectory based on the measured errors will be built to replace the original trajectory. The results show that the proposed method can significantly reduce errors; moreover, this is a low-cost solution and easy to apply in practice and calibration can be done cyclically. The only requirement for this method is a noncontact measuring device with high-resolution and located independently with the robot in calibration.

MEASUREMENT ERRORS AFFECTING THE CHARACTERISTICS OF MULTI-POSITION SYSTEMS, AND WAYS TO REDUCE THEM

Modern wide development of science and technology causes the growth of information needs in all branches of human development. At present, there are all opportunities to increase information security by combining sources of information into a single system. At the same time, when merging, specific difficulties and features emerge, which together make it difficult to implement the proposed solutions. The paper considers the peculiarity of combining different types of radar stations into a single information system. Errors of measurements of separate parameters and their influence on system characteristics are considered. Options for solving the problems that have arisen are proposed.

Penerapan Inaportnet dalam Proses Pelayanan Penyandaran Kapal: Studi Kasus

The significance of ports in global trade activities has a significant impact on a city, region, and even a nation. A port with adequate facilities and a superior system will make port activities more effective, neutral, and even simple for its users. Inaportnet is a facility that is currently used by major Indonesian ports, including the port of Tanjung Emas in Semarang. The users of this system include exporters, importers, shipping lines, and others, in addition to port players. PT Global Logistic Agency is one of the user companies that has been using the Inaportnet framework. This study was descriptive research using a structured interview method. This study aims to examine the use of Inaportnet from the side of the organizer represented by PT. Global Logistics Agency. The results showed that the use of Inaportnet played an important role in the implementation of ship berthing services in terms of time efficiency, energy, and demurrage, the Inaportnet system is still found down or system errors are due to maintenance from the management unit so that PT. Global Logistic Agency must carry out conventional or manual implementation.

Feedback on the benefits of remote patient control in Automated Peritoneal Dialysis in a French peritoneal dialysis center.

The COVID-19 pandemic has highlighted the growing role of telemedicine in home dialysis treatments. Since the appearance of a connected automated peritoneal dialysis (APD) machine (Claria Sharesource Baxter® machine), we have systematically offered this solution to our patients treated with APD. Over the past two years, we have treated 35 patients with connected APD, of which 20 are still under the technique (aged 50 to 87) and represent 54% of the patients on peritoneal dialysis. A questionnaire on five subjects (perception of switching to the connected machine, stress, safety, everyday life, and vacations) was also given to them and showed that 80% of the patients had no stress related to the telemonitoring, while 18 out of 20 patients (90%) felt safe. In 2020, we received 74 phone calls during on-call phone duty, including 42 calls for the 20 patients on connected APD, one all for a patient on normal APD, and 32 calls for 16 patients on continuous ambulatory peritoneal dialysis (CAPD). Handling errors concerned 42.85% of the calls, system errors concerned 4.76%, program validation concerned 7.14%, and connection problems concerned 9.52%. We were thus able to correct several problems remotely, such as drainage problems, weight gain, blood pressure imbalance, poor compliance, and connection problems. Thanks to the platform, we are notified daily of a possible problem. This saves the nurses time and allows them to deal with other issues. The way we educate patients and assist private nurses has not changed. Indeed, only the connection to the network as well as the entry of the weight and arterial pressure were added, and the disposables remained the same. Night or day, or in times of a health crisis, we can provide a rapid and targeted response to the patients’ questions, thanks to the platform.