Efisiensi Daya Protokol Quantize and Forward Pada Sistem Komunikasi Kooperatif Multi-relay

One of effective diversity techniques to combat fading on wireless channel is a cooperative communication system in which a source sends information through several relays and then forward it to a destination. A cooperative communication system has shown increased the system performance and reduced the energy consumption. However, it depends on the used relay mechanism that is relay protocols such as quantize and forward (QF) and amplify and forward (AF). In the previous research, energy efficiency of AF relay has investigated for a single-relay cooperative system, but multi-relay is more practical. Therefore, this research focuses on power efficiency in multi-relay cooperative communication system using QF protocol. The research method used is mathematical analysis and computer simulation for outage probability and power efficiency in the multi-relay QF. Simulation result found that multi-relay QF system could provide a high power efficiency, but the efficiency is reduced when the distance ratio increases. Power efficiency can be increased by adding the number of relays in the system. A comparison of power efficiency for QF and AF protocols has simulated, in which power efficiency of multi-relay QF is higher than that of multi-relay AF at distance ratio and power transmit. Thus, multi-relay QF system can provide high performance and power efficiency in the cooperative communication system

Global, regional, and national prevalence of adult overweight and obesity, 1990–2021, with forecasts to 2050: a forecasting study for the Global Burden of Disease Study 2021

Background: Overweight and obesity is a global epidemic. Forecasting future trajectories of the epidemic is crucial for providing an evidence base for policy change. In this study, we examine the historical trends of the global, regional, and national prevalence of adult overweight and obesity from 1990 to 2021 and forecast the future trajectories to 2050. Methods: Leveraging established methodology from the Global Burden of Diseases, Injuries, and Risk Factors Study, we estimated the prevalence of overweight and obesity among individuals aged 25 years and older by age and sex for 204 countries and territories from 1990 to 2050. Retrospective and current prevalence trends were derived based on both self-reported and measured anthropometric data extracted from 1350 unique sources, which include survey microdata and reports, as well as published literature. Specific adjustment was applied to correct for self-report bias. Spatiotemporal Gaussian process regression models were used to synthesise data, leveraging both spatial and temporal correlation in epidemiological trends, to optimise the comparability of results across time and geographies. To generate forecast estimates, we used forecasts of the Socio-demographic Index and temporal correlation patterns presented as annualised rate of change to inform future trajectories. We considered a reference scenario assuming the continuation of historical trends. Findings: Rates of overweight and obesity increased at the global and regional levels, and in all nations, between 1990 and 2021. In 2021, an estimated 1·00 billion (95% uncertainty interval [UI] 0·989–1·01) adult males and 1·11 billion (1·10–1·12) adult females had overweight and obesity. China had the largest population of adults with overweight and obesity (402 million [397–407] individuals), followed by India (180 million [167–194]) and the USA (172 million [169–174]). The highest age-standardised prevalence of overweight and obesity was observed in countries in Oceania and north Africa and the Middle East, with many of these countries reporting prevalence of more than 80% in adults. Compared with 1990, the global prevalence of obesity had increased by 155·1% (149·8–160·3) in males and 104·9% (95% UI 100·9–108·8) in females. The most rapid rise in obesity prevalence was observed in the north Africa and the Middle East super-region, where age-standardised prevalence rates in males more than tripled and in females more than doubled. Assuming the continuation of historical trends, by 2050, we forecast that the total number of adults living with overweight and obesity will reach 3·80 billion (95% UI 3·39–4·04), over half of the likely global adult population at that time. While China, India, and the USA will continue to constitute a large proportion of the global population with overweight and obesity, the number in the sub-Saharan Africa super-region is forecasted to increase by 254·8% (234·4–269·5). In Nigeria specifically, the number of adults with overweight and obesity is forecasted to rise to 141 million (121–162) by 2050, making it the country with the fourth-largest population with overweight and obesity. Interpretation: No country to date has successfully curbed the rising rates of adult overweight and obesity. Without immediate and effective intervention, overweight and obesity will continue to increase globally. Particularly in Asia and Africa, driven by growing populations, the number of individuals with overweight and obesity is forecast to rise substantially. These regions will face a considerable increase in obesity-related disease burden. Merely acknowledging obesity as a global health issue would be negligent on the part of global health and public health practitioners; more aggressive and targeted measures are required to address this crisis, as obesity is one of the foremost avertible risks to health now and in the future and poses an unparalleled threat of premature disease and death at local, national, and global levels. Funding: Bill & Melinda Gates Foundation

Rancang Bangun Smart Prototipe Pengukur Densitas Larutan Kimia di dalam Bejana Menggunakan Serapan Radiasi Gamma

RANCANG BANGUN SMART PROTOTIPE PENGUKUR DENSITAS LARUTAN KIMIA DI DALAM BEJANA MENGGUNAKAN SERAPAN RADIASI GAMMA. Pengukuran densitas dengan metoda serapan radiasi gamma dapat diaplikasikan untuk proses pengolahan kimia pada reaktor Sp36 petrokimia gresik sehingga densitas bahan baku P2O5 dapat dikendalikan secara akurat. Prototip ini tersusun dari detektor NaI(TL) diameter 5 cm yang dilengkapi photomultiplier, modul tegangan tinggi, modul preamp, modul pulse shaping dan mikrokontroller Atmega 328P dengan tampilan LCD dengan resolusi 128x64, serta dilengkapi juga dengan modul Wifi ESP8266-01 sehingga hasil pengukuran dapat dimonitor oleh hand phone menggunakan jaringan internet. Hasil rancang bangun prototip pengukur densitas larutan kimia di dalam bejana menggunakan serapan radiasi gamma telah di uji dengan berbagai sampel P2O5.dengan variasi densitas dan menghasilkan sensitivitas ukur ± 0.44%. Kata kunci : Pengukur densitas larutan kimia, bejana proses, serapan radiasi gamm

Systematic literature review with meta-analysis on essential oil interventions for agitated behavior in dementia patients

Introduction: Essential oil treatment has been explored as a potential alternative medicine, as these therapies can induce calming and sedative effects by acting on the neuro-limbic system and upregulating neurotransmitter synthesis. Objectives: This paper aims to assess the impact of essential oil interventions on aggressive behavior in people with dementia. Methods: The literature search was carried out through six databases. The outcomes of interest were the survival risk and post-treatment score of the Cohen-Mansfield Agitation Inventory (CMAI), Neuropsychiatric Inventory (NPI), and Quality of Life (QoL). Quality appraisal was done using RoB 2.0, while meta-analysis was done using RevMan 5.4. This systematic review has been registered to the PROSPERO database (CRD42023476844). Results: We analyzed 11 included studies with 1,418 patients. RoB 2.0 analysis resulted in eight low-risk-of-bias and three high-risk-of-bias studies. This study suggests that essential oil interventions lead to statistically significant improvements in survival risk with moderate heterogeneity [OR = 0.63 (95% CI: 0.41, 0.98, p = 0.04; I2 = 74%)]. This study also found a significant improvement in NPI scores following the use of essential oils [SMD = -2.97 (95% CI = -5.61, -0.32, p = 0.03; I2 = 98%)], but no statistically significant improvements were found in CMAI scores [SMD = 0.17 (95% CI = 0.37, 0.71, p = 0.53; I2 = 74%)]. The QoL assessment showed a trend favoring the control group after implementing essential oil treatments [SMD = 4.89 (95% CI = 1.51, 8.27, p = 0.005; I2 = 98%)]. Conclusions: Essential oil is a potential approach in alleviating the agitated behavior of dementia patients considering its survival risk and some parameters, such as NPI, CMAI, and QoL score. However, more studies regarding essential oils on these parameters should be done, especially studies with specific main ingredients of the essential oil

Systematic literature review with meta-analysis on essential oil interventions for agitated behavior in dementia patients

Introduction: Essential oil treatment has been explored as a potential alternative medicine, as these therapies can induce calming and sedative effects by acting on the neuro-limbic system and upregulating neurotransmitter synthesis. Objectives: This paper aims to assess the impact of essential oil interventions on aggressive behavior in people with dementia. Methods: The literature search was carried out through six databases. The outcomes of interest were the survival risk and post-treatment score of the Cohen-Mansfield Agitation Inventory (CMAI), Neuropsychiatric Inventory (NPI), and Quality of Life (QoL). Quality appraisal was done using RoB 2.0, while meta-analysis was done using RevMan 5.4. This systematic review has been registered to the PROSPERO database (CRD42023476844). Results: We analyzed 11 included studies with 1,418 patients. RoB 2.0 analysis resulted in eight low-risk-of-bias and three high-risk-of-bias studies. This study suggests that essential oil interventions lead to statistically significant improvements in survival risk with moderate heterogeneity [OR = 0.63 (95% CI: 0.41, 0.98, p = 0.04; I2 = 74%)]. This study also found a significant improvement in NPI scores following the use of essential oils [SMD = -2.97 (95% CI = -5.61, -0.32, p = 0.03; I2 = 98%)], but no statistically significant improvements were found in CMAI scores [SMD = 0.17 (95% CI = 0.37, 0.71, p = 0.53; I2 = 74%)]. The QoL assessment showed a trend favoring the control group after implementing essential oil treatments [SMD = 4.89 (95% CI = 1.51, 8.27, p = 0.005; I2 = 98%)]. Conclusions: Essential oil is a potential approach in alleviating the agitated behavior of dementia patients considering its survival risk and some parameters, such as NPI, CMAI, and QoL score. However, more studies regarding essential oils on these parameters should be done, especially studies with specific main ingredients of the essential oil

Global, regional, and national prevalence of child and adolescent overweight and obesity, 1990–2021, with forecasts to 2050: a forecasting study for the Global Burden of Disease Study 2021

Background Despite the well documented consequences of obesity during childhood and adolescence and future risks of excess body mass on non-communicable diseases in adulthood, coordinated global action on excess body mass in early life is still insufficient. Inconsistent measurement and reporting are a barrier to specific targets, resource allocation, and interventions. In this Article we report current estimates of overweight and obesity across childhood and adolescence, progress over time, and forecasts to inform specific actions. Methods Using established methodology from the Global Burden of Diseases, Injuries, and Risk Factors Study 2021, we modelled overweight and obesity across childhood and adolescence from 1990 to 2021, and then forecasted to 2050. Primary data for our models included 1321 unique measured and self-reported anthropometric data sources from 180 countries and territories from survey microdata, reports, and published literature. These data were used to estimate age-standardised global, regional, and national overweight prevalence and obesity prevalence (separately) for children and young adolescents (aged 5–14 years, typically in school and cared for by child health services) and older adolescents (aged 15–24 years, increasingly out of school and cared for by adult services) by sex for 204 countries and territories from 1990 to 2021. Prevalence estimates from 1990 to 2021 were generated using spatiotemporal Gaussian process regression models, which leveraged temporal and spatial correlation in epidemiological trends to ensure comparability of results across time and geography. Prevalence forecasts from 2022 to 2050 were generated using a generalised ensemble modelling approach assuming continuation of current trends. For every age-sex-location population across time (1990–2050), we estimated obesity (vs overweight) predominance using the log ratio of obesity percentage to overweight percentage. Findings Between 1990 and 2021, the combined prevalence of overweight and obesity in children and adolescents doubled, and that of obesity alone tripled. By 2021, 93·1 million (95% uncertainty interval 89·6–96·6) individuals aged 5–14 years and 80·6 million (78·2–83·3) aged 15–24 years had obesity. At the super-region level in 2021, the prevalence of overweight and of obesity was highest in north Africa and the Middle East (eg, United Arab Emirates and Kuwait), and the greatest increase from 1990 to 2021 was seen in southeast Asia, east Asia, and Oceania (eg, Taiwan [province of China], Maldives, and China). By 2021, for females in both age groups, many countries in Australasia (eg, Australia) and in high-income North America (eg, Canada) had already transitioned to obesity predominance, as had males and females in a number of countries in north Africa and the Middle East (eg, United Arab Emirates and Qatar) and Oceania (eg, Cook Islands and American Samoa). From 2022 to 2050, global increases in overweight (not obesity) prevalence are forecasted to stabilise, yet the increase in the absolute proportion of the global population with obesity is forecasted to be greater than between 1990 and 2021, with substantial increases forecast between 2022 and 2030, which continue between 2031 and 2050. By 2050, super-region obesity prevalence is forecasted to remain highest in north Africa and the Middle East (eg, United Arab Emirates and Kuwait), and forecasted increases in obesity are still expected to be largest across southeast Asia, east Asia, and Oceania (eg, Timor-Leste and North Korea), but also in south Asia (eg, Nepal and Bangladesh). Compared with those aged 15–24 years, in most super-regions (except Latin America and the Caribbean and the high-income super-region) a greater proportion of those aged 5–14 years are forecasted to have obesity than overweight by 2050. Globally, 15·6% (12·7–17·2) of those aged 5–14 years are forecasted to have obesity by 2050 (186 million [141–221]), compared with 14·2% (11·4–15·7) of those aged 15–24 years (175 million [136–203]). We forecasted that by 2050, there will be more young males (aged 5–14 years) living with obesity (16·5% [13·3–18·3]) than overweight (12·9% [12·2–13·6]); while for females (aged 5–24 years) and older males (aged 15–24 years), overweight will remain more prevalent than obesity. At a regional level, the following populations are forecast to have transitioned to obesity (vs overweight) predominance before 2041–50: children and adolescents (males and females aged 5–24 years) in north Africa and the Middle East and Tropical Latin America; males aged 5–14 years in east Asia, central and southern sub-Saharan Africa, and central Latin America; females aged 5–14 years in Australasia; females aged 15–24 years in Australasia, high-income North America, and southern sub-Saharan Africa; and males aged 15–24 years in high-income North America. Interpretation Both overweight and obesity increased substantially in every world region between 1990 and 2021, suggesting that current approaches to curbing increases in overweight and obesity have failed a generation of children and adolescents. Beyond 2021, overweight during childhood and adolescence is forecast to stabilise due to further increases in the population who have obesity. Increases in obesity are expected to continue for all populations in all world regions. Because substantial change is forecasted to occur between 2022 and 2030, immediate actions are needed to address this public health crisis. Funding Bill & Melinda Gates Foundation and Australian National Health and Medical Research Council