Modified walsh transform for harmonic assessment

Harmonic assessment at end users through energy meter is a part of power quality monitoring to determine harmonics contamination level in distribution network. Integration of harmonics extraction technique with energy meter requires two considerations which are measurement accuracy of the technique and its computational complexity to extract harmonics. These two aspects are main requirements for meter to support the execution of harmonics extraction since it is operated under low-cost microcontroller. In harmonic extraction of Fast Fourier Transform (FFT), the computation burden is quite high and requires additional hardware installation to support the algorithm’s operation. Therefore, this thesis presents a Modified Walsh Transform algorithm as an alternative harmonic extraction. The proposed algorithm consumes less arithmetic operations than FFT and suitable to be integrated into energy meter. This study involves with extracting distorted current signal into harmonic components, measuring the harmonics magnitude and calculating Root-Mean-Square (RMS), Total Harmonic Distortion (THD) and Distortion Power Factor (DPF) as well as computational analysis between FFT and Modified Walsh Transform algorithms. The result from simulation indicates that the proposed algorithm has 99% of accuracy percentage with more consistent result than FFT. Moreover, the arithmetic operation in Modified Walsh Transform is less than FFT to show that less computation burden consumed by the proposed algorithm. Meanwhile, a laboratory experiment has been conducted to demonstrate consideration of DPF in harmonics assessment and power factor measurement as complied in IEEE Std.1459-2010

Analisa pengelolaan kampanye public relations tentang pencegahan Covid-19 di Indonesia

In early March 2020 Indonesia began to intensify with various kinds of information related to the rapid spread of the Corona virus. the cases confirmed increased every day, Indonesian people behavior initially considered the covid-19 corona virus was a kind of a common desease, until in the end the data on the development of the covid-19 case increased rapidly in mid-March 2020. Finally the government began to campaign for the prevention of covid -19 through socialization to implement health protocols and government policies. This study aims to find out how the Indonesian government manages public relations campaigns about Covid-19 prevention. This study uses a constructivism paradigm with an interpretive approach and descriptive analysis method, researchers in this study analyze social phenomena that are built by the community based on existing realities. The results of this study illustrate that in managing public relations campaigns about co-19 prevention through three stages, 1) pharyngeal facts by collecting data and facts through opinions, attitudes, public behavior based on methods of analyzing media content and field reports. 2) Planning & programming by determining the goals, objectives, communicators, message content and media used, this program is referred to as an emergency program. 3) Take action & communicate by carrying out campaigns about co-19 prevention through messages delivered by Covid-19 Task Force spokespersons about increasing covid-19 cases, applying social distance / distance, implementing PHBS (clean and healthy lifestyle)), and the application of PSBB (Large Scale Social Limits) in another terms in the other countries use "lockdown" term. Mass media and online media are optimized by the government to provide information. The researchers concluded that the analysis carried out can be categorized into three stages, namely fact finding, planning & programming, taking action & communicating effectively

Prosper dan masalah-masalah yang dihadapi oleh industry kraftangan di Malaysia / Mazidah Majid

Pertumbuhan industri pembuatan di Malaysia telah mendapat perhatian utama kerajaan, terutama industri Kraftangan. Berbagai usaha dilakukan demi kemajuan industri tersebut. Kajian yang kami jalankan merupakan salah satu usaha ke arah kesinambungan usaha kerajaan. Hasilnya beberapa objektif telah digariskan dan secara langsung melibatkan para pengusaha dan para pengguna. Secara umumnya masalah-masalah yang dihadapi oleh pengusaha ialah tentang teknik pembuatan, kualiti barangan dan pemasaran. Usaha secara bersungguh-sungguh dan penyertaan mereka-mereka yang mahir hendaklah dilakukan secara korporat

Nutritional and non-communicable disease (NCD) status association with fall among older persons in Malaysia : findings from National Health and Morbidity Survey (NHMS) Malaysia 2018

Fall is a health problem for older persons. This study investigates the potential factors of concern: the nutritional status of older persons and non-communicable disease association with incidence of falls. This study used data from NHMS 2018, and conducted a cross-sectional design by applying two-stage stratified cluster sampling. Descriptive statistics such as the percentage of each variable were done. Factors associated with falls were determined at both univariate and multivariable levels using simple logistic regression and multiple logistic regression. The data were presented as standard values for each analysis and adjusted odds ratios with 95% CI with p values (<0.05). A total of 3,867 from 3,977 elderly (mean age 68.2+ 6.85) were recruited with the response rate of 97.2%. Factors associated with fall were 70 years old and above (AOR= 1.34, 95% CI: 1.09, 1.64), obesity (AOR=1.55, 95% CI: 1.21, 1.98), undernutrition (AOR=1.59, 95% CI: 1.30, 1.94), persons with 2 NCDs (AOR=1.49, 95% CI: 1.15, 1.92) and persons with 3 NCDs (AOR=1.63, 95% CI: 1.23, 2.16). Advanced age, malnutrition, obesity, and having two or more NCDs are associated with falls in the NHMS 2018 study. In conclusion, falls are prevalent among older persons. There is an urgent need for public health strategies and programmes to decrease the incidence of modifiable risk factors and early identification of those at risk. Implementation of fall preventive programs which includes multifactorial interventions at hospitals and homes can also significantly reduce incidence of falls among older persons

Mortality from gastrointestinal congenital anomalies at 264 hospitals in 74 low-income, middle-income, and high-income countries: a multicentre, international, prospective cohort study

Summary Background Congenital anomalies are the fifth leading cause of mortality in children younger than 5 years globally. Many gastrointestinal congenital anomalies are fatal without timely access to neonatal surgical care, but few studies have been done on these conditions in low-income and middle-income countries (LMICs). We compared outcomes of the seven most common gastrointestinal congenital anomalies in low-income, middle-income, and high-income countries globally, and identified factors associated with mortality. Methods We did a multicentre, international prospective cohort study of patients younger than 16 years, presenting to hospital for the first time with oesophageal atresia, congenital diaphragmatic hernia, intestinal atresia, gastroschisis, exomphalos, anorectal malformation, and Hirschsprung’s disease. Recruitment was of consecutive patients for a minimum of 1 month between October, 2018, and April, 2019. We collected data on patient demographics, clinical status, interventions, and outcomes using the REDCap platform. Patients were followed up for 30 days after primary intervention, or 30 days after admission if they did not receive an intervention. The primary outcome was all-cause, in-hospital mortality for all conditions combined and each condition individually, stratified by country income status. We did a complete case analysis. Findings We included 3849 patients with 3975 study conditions (560 with oesophageal atresia, 448 with congenital diaphragmatic hernia, 681 with intestinal atresia, 453 with gastroschisis, 325 with exomphalos, 991 with anorectal malformation, and 517 with Hirschsprung’s disease) from 264 hospitals (89 in high-income countries, 166 in middleincome countries, and nine in low-income countries) in 74 countries. Of the 3849 patients, 2231 (58·0%) were male. Median gestational age at birth was 38 weeks (IQR 36–39) and median bodyweight at presentation was 2·8 kg (2·3–3·3). Mortality among all patients was 37 (39·8%) of 93 in low-income countries, 583 (20·4%) of 2860 in middle-income countries, and 50 (5·6%) of 896 in high-income countries (p<0·0001 between all country income groups). Gastroschisis had the greatest difference in mortality between country income strata (nine [90·0%] of ten in lowincome countries, 97 [31·9%] of 304 in middle-income countries, and two [1·4%] of 139 in high-income countries; p≤0·0001 between all country income groups). Factors significantly associated with higher mortality for all patients combined included country income status (low-income vs high-income countries, risk ratio 2·78 [95% CI 1·88–4·11], p<0·0001; middle-income vs high-income countries, 2·11 [1·59–2·79], p<0·0001), sepsis at presentation (1·20 [1·04–1·40], p=0·016), higher American Society of Anesthesiologists (ASA) score at primary intervention (ASA 4–5 vs ASA 1–2, 1·82 [1·40–2·35], p<0·0001; ASA 3 vs ASA 1–2, 1·58, [1·30–1·92], p<0·0001]), surgical safety checklist not used (1·39 [1·02–1·90], p=0·035), and ventilation or parenteral nutrition unavailable when needed (ventilation 1·96, [1·41–2·71], p=0·0001; parenteral nutrition 1·35, [1·05–1·74], p=0·018). Administration of parenteral nutrition (0·61, [0·47–0·79], p=0·0002) and use of a peripherally inserted central catheter (0·65 [0·50–0·86], p=0·0024) or percutaneous central line (0·69 [0·48–1·00], p=0·049) were associated with lower mortality. Interpretation Unacceptable differences in mortality exist for gastrointestinal congenital anomalies between lowincome, middle-income, and high-income countries. Improving access to quality neonatal surgical care in LMICs will be vital to achieve Sustainable Development Goal 3.2 of ending preventable deaths in neonates and children younger than 5 years by 2030

COMPENSATION CIRCUIT OF INDUCTIVELY COUPLED POWER TRANSFER FOR ELECTRIC MOTORCYCLE WIRELESS CHARGING

In an inductively coupled power transfer (ICPT) device for electric vehicle (EV) wireless charging, there are two issues to concern which are the uncoupled coil location during power transfer process and receiver circuit failure due to electronic device malfunction in EV. These two circumstances result in an overcurrent issue in the transmitter circuit because of the circuit resonance. The high current in the transmitter circuit can defect the inverter’s transistors when the current exceeds the transistor maximum current rating. This thesis proposes a capacitor-inductor and series capacitor (CL/S) compensation circuit to constrain the inverter overcurrent. The parameter of CL/S compensation is detuned out of resonant while ensure the required power transfer for the battery charging achieved. Comparative analyses on the electric motorcycle (EM) battery charging simulation show that the inverter current from the CL/S compensation maintains below its maximum current rating, 55 amperes, when the equivalent resistance of the EM battery reaches 200 Ω. At the same time, the double- sided inductor-capacitor-capacitor (LCC) current has exceeded significantly

Psychological distress of first year medical students who underwent two different admission processes during a stressful period

The study of medicine is often regarded by students as a stressful environment particularly during examination period. Studies found a high percentage of medical students experience significant psychological distress during the examination period. This study compared percentage and level of psychological distress between two batches of first year medical students who underwent different selection admission processes during a stressful examination period. A comparative cross-sectional study was done on two batches of first year medical students; one group selected based on academic merit (2008/2009 batch) and the other selected based on academic merit, psychometric tests and interview (2009/2010 batch). The psychological distress was measured by the 12-item general health questionnaire (GHQ-12). The data were collected right after the final examinations. A total of 99 (46.05%) medical students of the 2008/2009 batch and 196 (100%) medical students of the 2009/2010 batch participated. The percentage of medical students who had psychological distress of the 2008/2009 and the 2009/2010 batches were 58.59% and 42.3%, respectively. The mean GHQ-12 score and percentage of psychological distress were significantly different between the two batches (p< 0.01). The older batch had 2.01 times higher risk for developing psychological distress compared with the newer batch (p< 0.01). The newer batch of medical students had better psychological health status and was less likely to develop psychological distress during the stressful period compared with older batch

Design and evaluation of a mobile user interface usability / Ahmad Khairul Azizi Ahmad ... [et al.]

This research has intended to identify the importance of the usability factor in the creation of a mobile application. Basically, when it comes to directory information, most of the tourists use a conventional method, such as printed maps, traveling books, online or traveling websites and also travel agents. From my perspective and with support from the field research, language impediments and directory issues have been the most common problems in this research. While Smartphone’s and apps are, increasingly, being used nowadays, there are not sufficient studies addressing the usability of smartphone user interfaces or applications that are focused for tourist guides. This paper describes the design and evaluation process of the user interface of a smartphone application designed to be a guide or directory for tourists. Two successive versions of the user interfaces were tested with different groups. The results and findings from two rounds of usability tests led to recommendations regarding an inclusive design and the designing of apps that are useful for tourists and which may be a useful contribution to the broader community when designing interfaces for smartphones. Overall, the users enjoy using the new application that is more user friendly and easier to use and navigate with. The findings can be used as a reference to set certain standards in mobile application design and creation, and also to be used for academic benefit

A Study of Psychological Distress in Two Cohorts of First-Year Medical Students that Underwent Different Admission Selection Processes

Background: Medical training is often regarded as a stressful period. Studies have previously found that 21.6%–50% of medical students experience significant psychological distress. The present study compared the prevalence and levels of psychological distress between 2 cohorts of first-year medical students that underwent different admission selection processes. Methods:A comparative cross-sectional study was conducted by comparing 2 cohorts of first- year medical students; 1 group (cohort 1) was selected based purely on academic merit (2008/2009 cohort) and the other group (cohort 2) was selected based on academic merit, psychometric assessment, and interview performance (2009/2010 cohort). Their distress levels were measured by the General Health Questionnaire, and scores higher than 3 were considered indicative of significant psychological distress. Results: The prevalence (P = 0.003) and levels (P = 0.001) of psychological distress were significantly different between the 2 cohorts. Cohort 1 had 1.2–3.3 times higher risk of developing psychological distress compared to cohort 2 (P = 0.007). Conclusion: Cohort 2 had better psychological health than cohort 1 and was less likely to develop psychological distress. This study provided evidence of a potential benefit of multimodal student selection based on academic merit, psychometric assessment, and interview performance. This selection process might identify medical students who will maintain better psychological health