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Prevalence and factors associated with Suicidal Behaviour in Eswatini

為了解決focus 1.5t 0-100的問題，作者MOTSA MFUNDI PRESIDENT SEBENELE 這樣論述：

AbstractIntroductionThe determinants of suicidal behaviour are not well understood for both adolescents and the general adult population in Eswatini. The problem of SB is a lifetime experience that can affect anyone, both young and old. Hence, the research was performed to generate evidence on the

factors associated with suicidal behavior in the aforementioned populations. This dissertation contains two studies. The first study employed a mediation approach to evaluate the roles of multiple mediators (anxiety and loneliness) in the relationship of food insecurity (FI) and being bullied (BB) o

n suicidal behavior (SB) among adolescents in schools. Additionally, it used analysis approaches to assess the combined roles of food insecurity and being bullied on SB, anxiety, and loneliness. The second study addressed whether chronic disease and lifestyle are associated with suicidal ideation (S

I) among adults in Eswatini. Moreover, the study examined the potential modification roles of socioeconomic status (SES) on the association of chronic diseases and lifestyle factors with SI.MethodsStudy hypotheses were examined through secondary analysis from the Global School-based Health Survey (G

SHS) 2012 and STEPwise Approach to NCD Risk Factor Surveillance Survey (STEPS) 2013 surveys. Both of these surveys were designed to produce nationally representative samples using stratified sampling approaches. For our analysis (study 1), we included 3,264 students aged 13-17 years, who responded t

o the questions on food insecurity, being bullied, loneliness, anxiety, and SB. Data for the primary survey were collected through self-administered questionnaires, which were executed through regular class periods. We employed bivariate and multivariate regression models to estimate factors associa

ted between FI and BB with SB, anxiety and loneliness. In addition, we used a binary mediation regression model to assess the potential mediation roles of anxiety and loneliness on the association between FI and BB with SB. The second study utilized STEPs and used a complex sampling design, where a

total of 216 primary sampling units (PSU) were selected using probability-proportionate-to-size sampling. About 20 households were systematically sampled from the PSU to form secondary sampling units. Our analysis, included 3026 adult men and women aged 18 - 69 years who gave responses to the questi

ons on suicide to ascertain the presence or absence of suicidal thoughts. Bivariate and multivariate logistic regression models were used to estimate the associated factors between chronic disease and lifestyle factors with SI.ResultsStudy 1: The results demonstrated that SB, anxiety, and loneliness

were more likely for adolescents who had combined food insecurity and being bullied; were being bullied only; were food insecure only; were physically attacked; had a fight; had no friends; were truant; used marijuana and lacked parental support (all p

應用於 5G室外基站之寬頻雙極化天線設計

為了解決focus 1.5t 0-100的問題，作者宣佑杰 這樣論述：

本論文之研究方向主要為5G室外基站之雙極化天線設計。首先提出一天線其操作頻率可涵蓋第五代新電信 ( Fifth Generation New Radio, 5G NR )中所提出的 sub-6 GHz 頻段n77 (3.3–4.2 GHz)、n78 (3.3–3.8 GHz)。此天線設計使用同軸電纜 (RG402)直接饋入。利用交叉擺放兩對偶極子天線在兩層基板上，並在上層基板上埋入外圈的迴路天線，藉以提高該天線頻寬以及產生良好隔離度、交叉極化鑑別率以及提高前後比。提出天線一之整體尺寸為50 mm × 50 mm × 19 mm，接地面大小為100 mm × 100 mm，其量測電壓駐波比(V

SWR) ≤ 1.5 阻抗頻寬為28% (3.28–4.35 GHz)，隔離度(Isolation) ≥ 20 dB，0°之交叉極化鑑別率(Cross Polarization discrimination, XPD) ≥ 26 dB，增益(Gain)為7.5–8.25 dBi，前後比(Front-to-Back Ratio, FBR) ≥ 26dB，半功率波束寬(Half Power Beam Width, HPBW)則是73°± 7°。接著為了因應各國所使用不同的5G頻段，本論文提出第二支天線可完美覆蓋5G sub-6 GHz 中的n77 ( 3.3–4.2 GHz )、n78 ( 3.3

–3.8 GHz ) 以及n79 ( 4.4–5 GHz )。提出天線二之設計為交叉擺放兩對偶極子天線在同一基板上，與天線一不同的是，天線二使用耦合饋入，不需額外埋入寄生元件即可提高天線的操作頻寬，而天線二在設計時只使用了一層基板，因此大幅度降低了製作上的難度。提出天線二之整體尺寸為36 mm × 36 mm × 25 mm，接地面大小為 110 mm × 110 mm，其量測 VSWR ≤ 1.5 阻抗頻寬為47.6% (3.1–5.04 GHz)，隔離度 ≥ 22 dB，0° XPD ≥ 25 dB，峰值增益 6.6–8.3 dBi，FBR ≥ 25 dB，低頻部分(n77、n78)之半功

率波束寬為69°±4°，高頻部分(n79)之半功率波束寬則是103°± 7°。本論文中所提出之天線皆使用成本低廉、容易製作的電路板製作方式，適合在 5G 場域中大量佈建。