Academic literature on the topic 'Random peer sampling'
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Journal articles on the topic "Random peer sampling"
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Oguz, Barlas, Venkat Anantharam, and Ilkka Norros. "Stable Distributed P2P Protocols Based on Random Peer Sampling." IEEE/ACM Transactions on Networking 23, no. 5 (October 2015): 1444–56. http://dx.doi.org/10.1109/tnet.2014.2331352.
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Anindani, Dwinda Gusty, Uswatun Hasanah, and Cholilawati Cholilawati. "HUBUNGAN KONFORMITAS PEER GROUP DENGAN PERILAKU BERPACARAN PADA REMAJA." JKKP (Jurnal Kesejahteraan Keluarga dan Pendidikan) 2, no. 1 (April 30, 2015): 51. http://dx.doi.org/10.21009/jkkp.021.08.
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AbstrakPenelitian ini bertujuan untuk menganalisis hubungan antara konformitas peer group dengan perilaku berpacaran remaja. Metode penelitian yang digunakan adalah metode survey dengan pendekatan korelasional, dengan teknik pengambilan sampel menggunakan multistage sampling yang terdiri dari simple random sampling dan purposive sampling. Sampel penelitian ini adalah 233 siswa di SMP Negeri 209 Jakarta. Hasil penelitian diketahui bahwa: korelasi antara konformitas peer group dengan perilaku berpacaran remaja sebesar 0,467; konformitas peer group berkontribusi terhadap perilaku berpacaran sebesar 21,83%; dan terdapat hubungan yang positif dan signifikan antara konformitas peer group dengan perilaku berpacaran pada remaja di SMP Negeri 209 Jakarta.Kata kunci: konformitas peer group,perilaku berpacaran, remaja.
AbstractThis study is aimed at analyzing the relation between peer group conformity and teenagers dating behavior. This study uses a survey method with correlational approach, while multistage sampling (simple random sampling and purposive sampling). The sample was 233 students in SMP Negeri 209 Jakarta. The research found that: coefficient correlation between peer group conformity with adolescent dating behaviors of 0,467; conformity peer group contributing to the dating behavior of 21.83%; and there is a positive and significant relationship between peer group conformity with dating behavior in adolescents in SMP Negeri 209 Jakarta.Keywords: peer-group conformity, dating behavior, adolescent.
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Ganesh, A. J., A. M. Kermarrec, E. Le Merrer, and L. Massoulié. "Peer counting and sampling in overlay networks based on random walks." Distributed Computing 20, no. 4 (June 5, 2007): 267–78. http://dx.doi.org/10.1007/s00446-007-0027-z.
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FU, Yong-Quan, Yi-Jie WANG, and Jing ZHOU. "A Scalable Unbiased Sampling Method Based on Multi-Peer Adaptive Random Walk." Journal of Software 20, no. 3 (March 20, 2009): 630–43. http://dx.doi.org/10.3724/sp.j.1001.2009.03206.
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Pamuji, Agus, Rizki Wahyu Yunian Putra, and Agus Pahrudin. "PENGARUH PEER TUTORING METHOD MENGGUNAKAN BUKU SAKU DIGITAL TERHADAP PEMAHAMAN KONSEP MATEMATIS." Journal of Mathematics Education and Science 4, no. 1 (April 30, 2021): 1–6. http://dx.doi.org/10.32665/james.v4i1.143.
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This study aimed to determine the increase in understanding of mathematical concepts using the Peer Tutoring method and digital pocketbooks. The research conducted was experimental research. This study used random sampling with cluster random sampling technique. The data collection technique is using a test (essay). The data analysis technique in this study is the normality gain (N-gain). The data analysis technique applied to test the hypothesis in this study was the ANOVA of the same cell path. The results of data analysis and hypothesis testing that have been carried out can be concluded that there is an effect of Peer Tutoring Method learning using learning media assisted by digital pocketbooks on the ability to understand mathematical concepts. Abstrak Tujuan dari penelitian ini untuk mengetahui peningkatan pemahaman konsep matematis dengan Peer Tutoring Method dan buku saku digital. Penelitian yang dilakukan adalah penelitian eksperimen. Penelitian ini menggunakan random sampling dengan teknik cluster random sampling. Teknik pengumpulan data adalah menggunakan Tes (essay). Teknik analisis data pada penelitian ini adalah dengan normalitas gain (N-gain). Teknik analisis data-yang diterapkan untuk menguji hipotesis dalam penelitian ini adalah dengan ANOVA satu jalan sel sama. Hasil analisis data dan pengujian hipotesis yang telah dilakukan dapat disimpulkan bahwa adanya pengaruh penggunaan pembelajaran Peer Tutoring Method menggunakan media pembelajaran berbantu buku saku digital terhadap kemampuan pemahaman konsep matematis.
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Yunalia, Endang Mei, and Arif Nurma Etika. "Emotional Intelligence on Peer Conformity in Late Adolescence." STRADA Jurnal Ilmiah Kesehatan 9, no. 2 (November 24, 2020): 1724–31. http://dx.doi.org/10.30994/sjik.v9i2.502.
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Self-identity development in adolescents marked by the joining of youth in peer groups that can foster peer conformity. Emotional intelligence is needed by adolescents so that adolescents can avoid negative conformity. The aims of this research is analyze the correlation between emotional intelligence and peer conformity in late adolescence. This correlational analytic study was conducted on 191 respondents at “X” University who were selected using simple random sampling technique. The emotional intelligence was measured using a questionnaire that adapted Goleman's theory, while peer conformity was measured using a peer conformity questionnaire. Emotional intelligence and peer conformity data were analyzed using Spearman Rank test. Spearman Rank test showed p value 0.001 <α (0.005), r value = -0.245, so there is a correlation between emotional intelligence and peer conformity in adolescents with a negative correlation. That is, the higher level of adolescent emotional intelligence results in lower conformity with peers.
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Parulian, Tina Shinta, and Agnes Roma Yulianti. "Hubungan pola asuh orang tua dengan interaksi teman sebaya pada remaja." Jurnal Keperawatan Jiwa 7, no. 2 (August 22, 2019): 173. http://dx.doi.org/10.26714/jkj.7.2.2019.175-180.
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Masa remaja adalah periode transisi perkembangan kanak-kanak menuju dewasa, melibatkan perubahan biologis, kognitif dan sosio-emosional. Interaksi teman sebaya adalah hubungan timbal balik antara dua individu atau lebih dengan tingkat umur yang berdekatan yang saling mempengaruhi. Desain penelitian menggunakan deskriptif korelasi dengan pendekatan cross sectional yang bertujuan mengetahui hubungan antara pola asuh orang tua dengan interaksi remaja kepada teman sebaya. Jumlah sampel 197 siswa kelas VII dan VIII SMPN 4 Pakuhaji Ngamprah. Teknik sampling menggunakan stratified random sampling. Pengumpulan data menggunakan kuesioner. Analisa bivariat menggunakan uji chi-square. Hasil penelitian menunjukan ada hubungan antara pola asuh demokratik, pola asuh otoriter dan pola asuh permisif dengan interaksi teman sebaya. Saran kepada pihak sekolah agar remaja diberi ruang untuk mengembangkan potensi yang dimiliki. Kata kunci : pola asuh, remaja, interaksi, teman sebaya RELATIONSHIP OF PARENT PARENTS WITH PEER INTERACTION ADOLESCENT ABSTRACTAdolescence is a transition period of childhood development toward adulthood, involving biological, cognitive and socio-emotional changes. Peer interaction is a reciprocal relationship between two individuals or more. The study design used descriptive correlation with a cross sectional approach which aims to determine the relationship between parenting parents and adolescent interactions with peers. The number of samples was 197 students of class VII and VIII of SMP 4 Pakuhaji Ngamprah. The sampling technique used stratified random sampling. Data collection used a questionnaire. Bivariate analysis used chi-square test. The results shows that there is a relationship between democratic parenting, authoritarian parenting and permissive parenting with peer interaction. The suggestions for the school are given encouragement to adolescent to develop their potential. Key words: parenting, adolescents, peer interaction
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Dela, Vitria Larseman, Syahniar Syahniar, and Solfema Solfema. "Kontribusi Dukungan Orangtua Dan Peran Teman Sebaya Terhadap Sikap Remaja Putri Dalam Menghadapi Masa Pubertas Serta implikasinya Dalam Bimbingan Dan Konseling." JPPI (Jurnal Penelitian Pendidikan Indonesia) 2, no. 2 (December 30, 2016): 24–37. http://dx.doi.org/10.29210/02016145.
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This study aimed to describe: parental support and the role of peer, the attitude of the young women in facing the puberty, the contribution of parental support and the role of peer on attitudes young women in facing the puberty. This study includes a quantitative study, with descriptive correlational approach. The population of this study was students of SMPN 1 Batang Anai. The sample was selected by using purposive random sampling. The findings of the study are: (1) the level of parental support and the role of peers on average at the high category, (3) the attitude of the young women in facing the puberty are in a category receive, (4) there is a contribution of parental support and role of peers by 24.6% and 31.5%, and (6) there is a contribution between parental support and the role of friend peer by 38.4%.
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Hanifa, Hanna Permata, and Muslikah Muslikah. "HUBUNGAN ANTARA KONFORMITAS TEMAN SEBAYA DITINJAU DARI JENIS KELAMIN DENGAN KEPATUHAN TERHADAP TATA TERTIB SEKOLAH." JURNAL EDUKASI: Jurnal Bimbingan Konseling 5, no. 2 (December 31, 2019): 136. http://dx.doi.org/10.22373/je.v5i2.5092.
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Through a preliminary study with High School Counseling Teacher from High School 01 Jatisrono, Wonogiri, Central Java that obedience to school rules is still in the low category. On the other hand, students in their teens have the characteristics to conform with high peers. The purpose of this study was to determine the relationship between peer conformity in terms of gender with obedience to school rules. This research is a type of correlational quantitative research. Sampling using simple random sampling. The sample in this study amounted to 151 students spread throughout class XI. Measuring instruments used are the psychological scale of peer conformity and psychological scale of obedience to school rules. Analysis of the data used in the hypothesis test is the Carl Pearson product moment correlational test. The results showed that with the level of peer conformity in male and female students who were in the moderate category and found a positive and significant relationship between peer conformity in terms of gender with obedience to school rules with a low degree of correlation. Obtained correlation results of 0.261 with a significance of 0.001. From these results it can be understood that the higher the peer conformity, the higher obedience to school rules.
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Mahathir, Mahathir, Prilya Vitamaharanie, and Hermalinda Hermalinda. "Peer Conformity Affects Smoking Behavior among Male Adolescents in a High School in Padang, Indonesia." Nurse Media Journal of Nursing 10, no. 2 (August 21, 2020): 191–99. http://dx.doi.org/10.14710/nmjn.v10i2.28704.
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Background: Peers contribute to the development of adolescents’ behavior during the transition period. Adolescents often justify their behavior with peers to confirm social norms of their surroundings. The increasing number of male adolescent smokers is raising public awareness to become acquainted with the cause of the behavior. Peer conformity is expected to be one of the vital variables to circulate smoking behavior. Purpose: This study aimed to determine the correlation between peer conformity and smoking behavior among male adolescents in a high school in Padang, Indonesia.Methods: A descriptive-analytical research design with a cross-sectional approach was used in this study. The samples were 154 male adolescents recruited by proportional random sampling. The data were collected using the questionnaires and analyzed using the Fisher exact test. Results: The results showed a significant correlation between peer conformity and smoking behavior among male adolescents (p=0.000). Peer conformity contributed to the development of smoking behavior among adolescents in this study.Conclusion: Peer conformity was evident to have a significant correlation with smoking behavior among male adolescents. Increasing assertiveness and life skill ability might be a necessity to adapt to negative behavior among adolescents.
Dissertations / Theses on the topic "Random peer sampling"
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Auvolat, Alex. "Probabilistic methods for collaboration systems in large-scale trustless networks." Thesis, Rennes 1, 2021. http://www.theses.fr/2021REN1S125.
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Internet est un outil formidable pour l'éducation, la communication et la collaboration, mais ses usages majoritaires sont actuellement sous monopole de grandes multinationales (GAFAM), ce qui a des conséquences sur le respect des droits humains et des libertés individuelles. Cette thèse propose des outils pour le développement d'applications décentralisées : des applications sur Internet qui fournissent des fonctionnalités similaires aux plateformes des GAFAM, mais de manière décentralisée, afin de rendre le pouvoir aux utilisateur pour décider démocratiquement de leur fonctionnement et de leurs usages. Nous nous concentrons sur les algorithmes épidémiques qui sont particulièrement adaptés dans le cadre de réseaux ouverts à large échelle. Nous proposons des contributions sur la diffusion causale de messages tolérante aux nœuds Byzantins, la diffusion causale épidémique à l'aide d'un stockage d'événements synchronisé par anti-entropie, l'échantillonnage aléatoire de pairs résistants aux attaques Byzantines et aux attaques Sybil, ainsi qu'un nouvel algorithme épidémique de diffusion totalement ordonnée qui tolère les nœuds malicieux et fournit un débit de messages élevéThe Internet is a formidable tool for education, communication and collaboration, however it is currently being monopolized by large corporations (GAFAM), which has consequences for many social issues such as respect of human rights and individual freedoms. This thesis focuses on ways to build decentralized applications: Internet applications that provide levels of functionality similar to those provided by the GAFAM, but that function in a decentralized manner, empowering the users to democratically decide of their functioning and their uses. We focus on epidemic algorithms, which are particularly suited to the context of very large open networks. We make contributions on causal broadcast in presence of Byzantine nodes, epidemic causal broadcast using an event store synchronized with an anti-entropy algorithm, random peer sampling in presence of Byzantine nodes and Sybil attacks, as well as a new epidemic total order broadcast which is tolerant to malicious nodes and provides high throughput message delivery
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Barroso, Juarez Coelho. "AvaliaÃÃo da Pesca da Lagosta Vermelha (Panulirus argus) e da Lagosta verde (Panulirus laevicauda) na Plataforma Continental do Brasil." Universidade Federal do CearÃ, 2012. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=7259.
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CoordenaÃÃo de AperfeiÃoamento de NÃvel SuperiorA pesca extrativa de lagosta no Brasil à uma atividade econÃmica importante que engloba diferentes setores sociais na regiÃo costeira e que aporta um ingresso mÃdio anual de 84 milhÃes de dÃlares. A grande demanda do produto, o elevado valor no mercado internacional, a expansÃo da frota artesanal, o nÃo cumprimento das medidas de conservaÃÃo, o impacto da pesca no ecossistema e possivelmente a variabilidade do clima, tem propiciado uma elevada explotaÃÃo ou sobre-explotaÃÃo dos estoques destes crustÃceos. A avaliaÃÃo e previsÃo da pescaria dependem da coleta de informaÃÃo biolÃgica e pesqueira, em que nas duas Ãltimas dÃcadas a ausÃncia destes dados e a falta de estudo do ciclo de vida gerou um elevado nÃvel de incerteza na administraÃÃo da pescaria. No presente estudo, foi realizada uma anÃlise integral da informaÃÃo biolÃgico-pesqueira gerada pelo projeto de mestrado e pelos dados que o precedem. As zonas de agregaÃÃo dos estoques pesqueiros se distribuÃram em 31 estratos que cobrem uma Ãrea de 356.610 kmÂ, divididos em duas regiÃes: rasa < 50 m (160.510 kmÂ) e profunda entre 50 e 100 m (196.100 kmÂ). O Ãndice de produtividade mÃdio (1999-2006) entre espÃcies foi de 29,75 kg/km em Panulirus argus e de 8,39 kg/km em P. laevicauda; nos diferentes estratos variou entre 0,02 e 217,0 kg/km (ambas as espÃcies). Os coeficientes de capturabilidade variaram entre 0,10 e 0,14, demonstrando-se que os aparelhos de pesca (caÃoeira, manzuà e cangalha) apresentam uma baixa eficiÃncia na pescaria de lagosta. A amostragem dos desembarques entre diferentes perÃodos de pesca (1970-1979, 1980-1988 e 1989-1993) mostrou uma diminuiÃÃo progressiva das lagostas pequenas e, como resultado, o comprimento mÃdio mostrou uma tendÃncia crescente. As amostragens aleatÃrias nas embarcaÃÃes que pescaram entre 20 e 35 m (1999) revelaram que as lagostas recrutadas (50 e 75 mm, CC) representaram 91% (P. argus) e 96% (P. laevicauda) do total capturado, que conjuntamente com a expansÃo da Ãrea de pesca (aumento do esforÃo) e a diminuiÃÃo da CPUE por quadrÃculas de pesca (entre 1974 e 1991), evidenciaram uma sobrepesca de crescimento que provavelmente esteja influenciando nas elevadas variaÃÃes das capturas anuais e em sua tendÃncia negativa observada nos Ãltimos 15 anos (1995-2009). A anÃlise realizada entre a CPUE e a abundÃncia (N), revelou uma falta de proporcionalidade (hiperestabilidade) entre ambos os parÃmetros, que poderia estar afetando a relaÃÃo entre a CPUE e o esforÃo, e sobre-estimando as estimativas do rendimento mÃximo sustentÃvel (RMS). Foi estimado um rendimento mÃximo sustentÃvel por unidade de Ãrea de 14 kg/km e um rendimento mÃximo sustentÃvel preliminar entre 5.000 e 5.604 t. Este resultado empÃrico deve ser corroborado a partir do desenvolvimento da amostragem aleatÃria estratificada que foi proposto no presente estudo. NÃo existem evidÃncias de uma sobrepesca de recrutamento nos estoques, mas as altas taxas de explotaÃÃo no estoque do setor profundo (50 e 100 m) de P. argus, composto principalmente por exemplares mais velhos e de elevado poder reprodutor, poderia estar acentuando o risco dos recrutamentos baixos e dos colapsos. Este grande nÃvel de incerteza pelo que transcorre a pescaria de lagosta na plataforma continental do Brasil deve ser abordado por formas de pensar novas e diferentes, por uma visÃo em longo prazo e pela obtenÃÃo de novos conhecimentos cientÃficos que permitam desenvolver uma pesca sustentÃvel.
Extractive fishing lobster in Brazil is an important economic activity which includes different social sectors in the coastal region and provides an average annual income of USD$ 84 million. The great demand for the product, the high value in international market, expansion of the artisanal fleet, failure in enforce of conservation measures, the fishing impact on ecosystems and perhaps climate variability, have led to a high exploitation or overexploitation of the crustacean stocks. The evaluation and fishery prediction depends of biological and fisheries data collection, in the last two decades the absence of these data and the lack in the life cycle study generated a high level of uncertainty in the management of the fishery. In the present study, a comprehensive analysis is done of biological and fishery information generated by the thesis project and the data that precedes. The areas of the stock aggregation were distributed into 31 strata covering an area of 356.610 kmÂ, divided into two regions: shallow < 50 m (160.510 kmÂ) and depth between 50 and 100 m (196.100 kmÂ). The medium productivity index (1999-2006) between species was 29,75 kg/km in Panulirus argus and 8,39 kg/km in P. laevicauda; in different strata varied between 0.02 and 217.0 kg/km (both species). Catchability coefficients ranged between 0.10 and 0.14, showing that the fishing gears (caÃoeira, manzuà and cangalha) have a low efficiency in the lobster fishery. The sampling of landings between different fishing periods (1970-1979, 1980-1988 and 1989-1993) showed a progressive decrease in the small lobsters and as a result the mean length showed an increasing trend. The random samples on boats that fished between 20 and 35 m (1999), revealed that lobsters recruited (50 and 75 mm, Lc) accounted for 91% (P. argus) and 96% (P. laevicauda) of the total catch, which with the expansion of fishing (increased effort) was accompanied by a decreasing of the CPUE by fishing grids (between 1974 and 1991), showed a growth overfishing which are probably influencing in the high variations of the annual catches and its negative trend observed in the last fifteen years (1995-2009). The analysis between CPUE and abundance (N), revealed a lack of proportionality (hyperstability) between both parameters, which could be affecting the relationship between CPUE and effort and overestimating yield maximum sustainable (YMS). We estimated a yield maximum sustainable per unit area of 14 kg/km and a yield maximum sustainable preliminary between 5,000 and 5,604 t. This empirical result should be confirmed through the development of stratified random sampling is proposed in this study. There is not evidence of recruitment overfishing in the stocks, but high rates of exploitation in the deep stock (50 to 100 m) of P. argus, composed mainly of older specimens and high reproductive power, could be accentuating the risk of low recruitment and collapse. This high level of uncertainty which takes the lobster fishery on the continental shelf of Brazil must be addressed by new ways of thinking, by a long-term and acquiring new skills and knowledge to develop fisheries sustainable.
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Barroso, Juarez Coelho. "Avaliação da Pesca da Lagosta Vermelha (Panulirus argus) e da Lagosta verde (Panulirus laevicauda) na Plataforma Continental do Brasil." reponame:Repositório Institucional da UFC, 2012. http://www.repositorio.ufc.br/handle/riufc/18432.
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BARROSO, Juarez Coelho. Avaliação da Pesca da Lagosta Vermelha (Panulirus argus) e da Lagosta verde (Panulirus laevicauda) na Plataforma Continental do Brasil. 2012. 109 f. : Dissertação (mestrado) - Universidade Federal do Ceará, Centro de Ciências Agrárias, Departamento de Engenharia de Pesca, Fortaleza-CE, 2012Submitted by Nádja Goes (nmoraissoares@gmail.com) on 2016-07-18T13:17:31Z No. of bitstreams: 1 2012_dis_jcbarroso.pdf: 2594115 bytes, checksum: ce2b67584a13e444ae16d1c1c08898f1 (MD5)
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Extractive fishing lobster in Brazil is an important economic activity which includes different social sectors in the coastal region and provides an average annual income of USD$ 84 million. The great demand for the product, the high value in international market, expansion of the artisanal fleet, failure in enforce of conservation measures, the fishing impact on ecosystems and perhaps climate variability, have led to a high exploitation or overexploitation of the crustacean stocks. The evaluation and fishery prediction depends of biological and fisheries data collection, in the last two decades the absence of these data and the lack in the life cycle study generated a high level of uncertainty in the management of the fishery. In the present study, a comprehensive analysis is done of biological and fishery information generated by the thesis project and the data that precedes. The areas of the stock aggregation were distributed into 31 strata covering an area of 356.610 km², divided into two regions: shallow < 50 m (160.510 km²) and depth between 50 and 100 m (196.100 km²). The medium productivity index (1999-2006) between species was 29,75 kg/km² in Panulirus argus and 8,39 kg/km² in P. laevicauda; in different strata varied between 0.02 and 217.0 kg/km² (both species). Catchability coefficients ranged between 0.10 and 0.14, showing that the fishing gears (caçoeira, manzuá and cangalha) have a low efficiency in the lobster fishery. The sampling of landings between different fishing periods (1970-1979, 1980-1988 and 1989-1993) showed a progressive decrease in the small lobsters and as a result the mean length showed an increasing trend. The random samples on boats that fished between 20 and 35 m (1999), revealed that lobsters recruited (50 and 75 mm, Lc) accounted for 91% (P. argus) and 96% (P. laevicauda) of the total catch, which with the expansion of fishing (increased effort) was accompanied by a decreasing of the CPUE by fishing grids (between 1974 and 1991), showed a growth overfishing which are probably influencing in the high variations of the annual catches and its negative trend observed in the last fifteen years (1995-2009). The analysis between CPUE and abundance (N), revealed a lack of proportionality (hyperstability) between both parameters, which could be affecting the relationship between CPUE and effort and overestimating yield maximum sustainable (YMS). We estimated a yield maximum sustainable per unit area of 14 kg/km² and a yield maximum sustainable preliminary between 5,000 and 5,604 t. This empirical result should be confirmed through the development of stratified random sampling is proposed in this study. There is not evidence of recruitment overfishing in the stocks, but high rates of exploitation in the deep stock (50 to 100 m) of P. argus, composed mainly of older specimens and high reproductive power, could be accentuating the risk of low recruitment and collapse. This high level of uncertainty which takes the lobster fishery on the continental shelf of Brazil must be addressed by new ways of thinking, by a long-term and acquiring new skills and knowledge to develop fisheries sustainable.
A pesca extrativa de lagosta no Brasil é uma atividade econômica importante que engloba diferentes setores sociais na região costeira e que aporta um ingresso médio anual de 84 milhões de dólares. A grande demanda do produto, o elevado valor no mercado internacional, a expansão da frota artesanal, o não cumprimento das medidas de conservação, o impacto da pesca no ecossistema e possivelmente a variabilidade do clima, tem propiciado uma elevada explotação ou sobre-explotação dos estoques destes crustáceos. A avaliação e previsão da pescaria dependem da coleta de informação biológica e pesqueira, em que nas duas últimas décadas a ausência destes dados e a falta de estudo do ciclo de vida gerou um elevado nível de incerteza na administração da pescaria. No presente estudo, foi realizada uma análise integral da informação biológico-pesqueira gerada pelo projeto de mestrado e pelos dados que o precedem. As zonas de agregação dos estoques pesqueiros se distribuíram em 31 estratos que cobrem uma área de 356.610 km², divididos em duas regiões: rasa < 50 m (160.510 km²) e profunda entre 50 e 100 m (196.100 km²). O índice de produtividade médio (1999-2006) entre espécies foi de 29,75 kg/km² em Panulirus argus e de 8,39 kg/km² em P. laevicauda; nos diferentes estratos variou entre 0,02 e 217,0 kg/km² (ambas as espécies). Os coeficientes de capturabilidade variaram entre 0,10 e 0,14, demonstrando-se que os aparelhos de pesca (caçoeira, manzuá e cangalha) apresentam uma baixa eficiência na pescaria de lagosta. A amostragem dos desembarques entre diferentes períodos de pesca (1970-1979, 1980-1988 e 1989-1993) mostrou uma diminuição progressiva das lagostas pequenas e, como resultado, o comprimento médio mostrou uma tendência crescente. As amostragens aleatórias nas embarcações que pescaram entre 20 e 35 m (1999) revelaram que as lagostas recrutadas (50 e 75 mm, CC) representaram 91% (P. argus) e 96% (P. laevicauda) do total capturado, que conjuntamente com a expansão da área de pesca (aumento do esforço) e a diminuição da CPUE por quadrículas de pesca (entre 1974 e 1991), evidenciaram uma sobrepesca de crescimento que provavelmente esteja influenciando nas elevadas variações das capturas anuais e em sua tendência negativa observada nos últimos 15 anos (1995-2009). A análise realizada entre a CPUE e a abundância (N), revelou uma falta de proporcionalidade (hiperestabilidade) entre ambos os parâmetros, que poderia estar afetando a relação entre a CPUE e o esforço, e sobre-estimando as estimativas do rendimento máximo sustentável (RMS). Foi estimado um rendimento máximo sustentável por unidade de área de 14 kg/km² e um rendimento máximo sustentável preliminar entre 5.000 e 5.604 t. Este resultado empírico deve ser corroborado a partir do desenvolvimento da amostragem aleatória estratificada que foi proposto no presente estudo. Não existem evidências de uma sobrepesca de recrutamento nos estoques, mas as altas taxas de explotação no estoque do setor profundo (50 e 100 m) de P. argus, composto principalmente por exemplares mais velhos e de elevado poder reprodutor, poderia estar acentuando o risco dos recrutamentos baixos e dos colapsos. Este grande nível de incerteza pelo que transcorre a pescaria de lagosta na plataforma continental do Brasil deve ser abordado por formas de pensar novas e diferentes, por uma visão em longo prazo e pela obtenção de novos conhecimentos científicos que permitam desenvolver uma pesca sustentável.
Book chapters on the topic "Random peer sampling"
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Adeleke, M. L., D. Al-Kenawy, A. M. Nasr-Allah, M. Dickson, and Desalegn Ayal. "Impacts of Environmental Change on Fish Production in Egypt and Nigeria: Technical Characteristics and Practice." In African Handbook of Climate Change Adaptation, 789–805. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-45106-6_153.
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AbstractA survey approach was applied to examine the technical characteristics of fish farming practice in Egypt and Nigeria. Critical issues such as floods and other vices were considered in bringing out the inference and level of aquaculture in both countries. Multistage sampling technique was used to select the study area and the number of respondents. Both primary and secondary data were used in the analysis. Eighty fish farmers were randomly selected from each of the country, making a total of 160 respondents. The socioeconomic characteristics revealed that aquaculture is an antique venture in Africa with Egypt taking the lead, i.e., 99% of the respondents practice in large-scales production of more than 11 Fadden/acre per, and 100% males depend mainly on agricultural drainage water for their earthen ponds. Ninety-eight percent cultured tilapia (Oreochromis niloticus) which was believed to have originated from the Nile River. In terms of financial performance and partial economic analysis, tilapia production commands more sales in Egypt, while catfish (Clarias) production is seen as a promising venture in Nigeria. The fish farmers have various perceptions and reactions toward environmental changes factors such as cost of labor/manpower and inputs, poor water quality, and fish extension services, and climate change impedes aquaculture development in the countries. To achieve the scale of aquaculture expansion as observed in Asian and other developed part of the world, efforts should be geared toward continental and regional integration in order to encourage aquaculture practices in Nigeria and other parts of Africa. More so, government intervention and incentives should be paramount in Egypt to reduce the excessive exploitation of the private input suppliers.
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Hankin, David G., Michael S. Mohr, and Ken B. Newman. "Systematic sampling." In Sampling Theory, 48–67. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198815792.003.0004.
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In many contexts it is difficult or impossible to select a simple random sample. For example, the number of units in the finite population, N, may not be known in advance, or it may not be feasible to assign labels to all units in the population and to select an SRS from these labels (e.g., crabs within boxes on a fishing vessel). Instead, one may select a random start, r, on the integers 1 through k and then select that unit and every kth unit thereafter for inclusion in the sample. This selection method, called linear systematic sampling, results in an extremely restricted randomization—there are only k possible linear systematic samples—compared to the typically large number [N!/(N-n)!n!] of possible samples of size n that can be selected from N by SRS. If units are in random order, then linear systematic sampling with mean-per-unit estimation will have sampling variance comparable to SRS with mean-per-unit estimation. But if there is a trend of increase or decrease in unit-specific y value with unit label or location, then sampling variance of a mean-per-unit estimator for a linear systematic design may be substantially less than for an SRS design. Circular and fractional interval systematic sampling designs are also presented. The disadvantage of these systematic sampling designs is that the highly restricted randomizations generally rule out unbiased estimation of sampling variance from a single systematic sample. Several approaches for variance estimation are considered.
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Hankin, David G., Michael S. Mohr, and Ken B. Newman. "Equal probability sampling." In Sampling Theory, 23–47. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198815792.003.0003.
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This chapter presents a formal quantitative treatment of material covered conceptually in Chapter 2, all with respect to equal probability with replacement (SWR) and without replacement selection simple random sampling, (SRS) of samples of size n from a finite population of size N. Small sample space examples are used to illustrate unbiasedness of mean-per-unit estimators of the mean, total and proportion of the target variable, y, for SWR and SRS. Explicit formulas for sampling variance indicate how estimator uncertainty depends on finite population variance, sample size and sampling fraction. Measures of the relative performance of alternative sampling strategies (relative precision, relative efficiency, net relative efficiency) are introduced and applied to mean-per-unit estimators used for the SWR and SRS selection methods. Normality of the sampling distribution of the SRS mean-per-unit estimator depends on sample size but also on the shape of the distribution of the target variable, y, values over the finite population units. Normality of the sampling distribution is required to justify construction of valid 95% confidence intervals that may be constructed around sample estimates based on unbiased estimates of sampling variance. Methods to calculate sample size to achieve accuracy objectives are presented. Additional topics include Bernoulli sampling (a without replacement selection scheme for which sample size is a random variable), the Rao–Blackwell theorem (which allows improvement of estimators that are based on selection methods which may result in repeated selection of the same units), oversampling and nonresponse.
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Hankin, David G., Michael S. Mohr, and Ken B. Newman. "Spatially balanced sampling." In Sampling Theory, 240–68. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198815792.003.0012.
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In many ecological and natural resource settings, there may be a high degree of spatial structure or pattern to the distribution of target variable values across the landscape. For example, the number of trees per hectare killed by a bark beetle infestation may be exceptionally high in one region of a national forest and near zero elsewhere. In such circumstances it may be highly desirable or even required that a sample survey directed at estimation of total tree mortality across a forest be based on selection of random locations that have good spatial balance, i.e., locations are well spread over the landscape with relatively even distances between them. A simple random sample cannot guarantee good spatial balance. We present two methods that have been proposed for selection of spatially balanced samples: GRTS (Generalized Random Tessellation Stratified Sampling) and BAS (Balanced Acceptance Sampling). Selection of samples using the GRTS approach involves a complicated series of sequential steps that allows generation of spatially balanced samples selected from finite populations or from infinite study areas. Selection of samples using BAS relies on the Halton sequence, is conceptually simpler, and produces samples that generally have better spatial balance than those produced by GRTS. Both approaches rely on use of software that is available in the R statistical/programming environment. Estimation relies on the Horvitz–Thompson estimator. Illustrative examples of running the SPSURVEY software package (used for GRTS) and links to the SDraw package (used for BAS) are provided at http://global.oup.com/uk/companion/hankin.
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Hankin, David G., Michael S. Mohr, and Ken B. Newman. "Adaptive sampling." In Sampling Theory, 219–39. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198815792.003.0011.
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The abundance of rare species of plants and animals may often prove difficult to estimate due to the isolated patchy distribution of individuals. Adaptive sampling may prove more effective than other sampling strategies for such species. In adaptive cluster sampling an initial SRS of population units is selected. Further adaptive sampling in the neighborhood of these units is then carried out whenever the value of y in a selected unit meets or exceeds a criterion value, c, which may often be just a single individual. This sampling procedure can be shown to lead to selection of clusters of units for which, with the exception of edge units, all units in the selected clusters have y≥c. If the initial sample is large enough to encounter some isolated patches of individuals, this approach may outperform SRS with mean-per-unit estimation. Drawbacks of this approach include the facts that the eventual number of population units which will need to be measured is random and unknown prior to execution of the survey, and it is difficult to specify the magnitude of the adaptive sampling criterion, c. Therefore, the total cost and time needed to complete an adaptive sampling survey can be highly unpredictable. Nevertheless, the theory is intriguing and has obvious intuitive appeal. Once a very rare individual has been encountered, it makes good sense to search very carefully in the neighborhood of the location where that rare individual has been found.
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Anderson, Raymond A. "Sample Selection." In Credit Intelligence & Modelling, 651–66. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780192844194.003.0020.
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Samples are small amounts chosen to represent a larger pool; sampling dips into the pool to choose which will be analysed, with conclusions extended to the larger pool. Trade-offs happen between i) having samples of sufficiently large and representative to enable reasonable results; ii) the costs associated with data collection and processing. (1) Overview—i) terminology—proper drawing and representation {random, stratified, bias, weight}, counts per subgroup {over-, under- and balanced sample}; repetitive {replacement, bootstrap, k-fold, jack-knife}; artificial increases {bagging, boosting, stacking}; ii) optimal and minimum sample sizes; iii) law of diminishing data returns. (2) THOR samples—i) sample types—training, hold-out, out-of-time, recent; ii) sample count guidelines; iii) review of observation windows and assignment; iv) sampling plan and outcome. (3) Afterthoughts—i) further review of un- and under-populated characteristics; ii) means of randomly extracting an exact number of cases; iii) housekeeping rules regarding code assignments for each sample.
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Diong, Ivan H. W., and Evelyn B. H. Toh. "The Influences of Reference Groups Towards the Usage of E-Wallet Payment Systems." In Handbook of Research on Social Impacts of E-Payment and Blockchain Technology, 428–55. IGI Global, 2022. http://dx.doi.org/10.4018/978-1-7998-9035-5.ch023.
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This chapter investigates how the three referent groups (peers, parent, media) of subjective norms (SN) influence the intention of millennials to adopt e-wallets. This study is supported by the theory of planned behavior (TPB) and stimulus-organism-response (SOR) framework. A total of 215 usable responses were obtained and analyzed using SPSS 25 and SmartPLS 3.2.6. The data is collected using a self-administered survey (Lancaster Qualtrics) and distributed randomly using the snowball sampling technique. The results indicate that the decomposition of SN has a significant relationship towards the intention of millennials to adopt e-wallets. This chapter also provides useful insights on what are the other factors that would build the intention of millennials towards the usage of e-wallets. Moreover, TPB along with the SOR framework supports the findings and provides better credibility to this study. This chapter concludes that brands should leverage more capital on media advertisements rather than peer referrals if they want to capture a larger market.
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Goel, Akshit, Sanmukh R. Kuppannagari, Yang Yang, Ajitesh Srivastava, and Viktor K. Prasanna. "Parallel Totally Induced Edge Sampling on FPGAs1." In Parallel Computing: Technology Trends. IOS Press, 2020. http://dx.doi.org/10.3233/apc200097.
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Graphs are a powerful tool for data representation in a wide range of domains like social, biological, informational, etc. But their extremely large sizes often makes it computationally infeasible to study the entire graphs. Graph sampling provides a solution by generating smaller subgraphs which are computationally feasible to analyze and can be used to infer the properties of the entire graph. In this work, we develop a high throughput parallel implementation of Totally Induced Edge Sampling (TIES) algorithm on FPGA. Prior research has shown that TIES performs better than other sampling techniques in terms of preserving the topological properties of the original graph, and thus generates better quality subgraphs. The algorithm randomly samples the edges and inserts the corresponding vertices into the sampled vertex set until the desired number of vertices are sampled. Then, the edges connecting the sampled vertices are included in the sampled subgraph. We use multiple parallel pipelines to achieve high throughput and faster graph sampling. The parallel pipelines need to access a global dynamic data structure which contains the vertices sampled thus far. To support this, we develop a novel dynamic hash table data structure which supports parallel accesses in each clock cycle. We vary the number of pipelines, the size of the sampled subgraph and analyze the performance of the design in terms of on-chip FPGA resource utilization, throughput and total execution time. Our design achieves a throughput as high as 2471 Million Edges Per Second (MEPS) and performs 3.6x better than the state-of-the-art multi-core design.
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"Balancing Fisheries Management and Water Uses for Impounded River Systems." In Balancing Fisheries Management and Water Uses for Impounded River Systems, edited by C. Craig Bonds, John B. Taylor, and Jeremy Leitz. American Fisheries Society, 2008. http://dx.doi.org/10.47886/9781934874066.ch15.
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<em>Abstract</em>.—Rates of voluntary release of legally harvestable largemouth bass <em>Micropterus salmoides </em>have increased over the past few decades, causing managers concern that this behavior is reducing the effectiveness of harvest restriction regulations. We conducted an angler survey to assess the degree to which Texas anglers practice voluntary release, their attitudes towards harvest and slot-length regulations, and factors that influence these attitudes and actions. Our sampling frame consisted of a random sample of general fishing license holders and anglers intercepted by creel surveys on reservoirs managed with a slot-length limit for largemouth bass. Seventy-one percent of largemouth bass anglers reported that they rarely or never harvest fish smaller than the slot. Concerns with contaminants, value of fish as food, or the influence of peers were not reported to be strong factors in their decision to release fish. Increases to the minimum size of the protected slot range or an increase in the daily bag were not effective incentives for harvest of small largemouth bass. Anglers intercepted on slot lakes appeared to have a better understanding of the rationale for slot-length limits and are more likely to harvest fish smaller than the slot. The propensity for general fishing license holders to release small largemouth bass appears to be motivated by a perceived conservation ethic. More anglers rely on friends, magazines, television, and Web sites than other informational sources. We believe these results can be used to enhance effectiveness of educational efforts to encourage angler harvest of largemouth bass smaller than protected slot-length ranges.
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"Conservation, Ecology, and Management of Catfish: The Second International Symposium." In Conservation, Ecology, and Management of Catfish: The Second International Symposium, edited by KATHRYN N. S. MCCAIN, JOSEPH W. RIDINGS, QUINTON PHELPS, and ROBERT A. HRABIK. American Fisheries Society, 2011. http://dx.doi.org/10.47886/9781934874257.ch12.
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<em>Abstract</em>.—Using Long Term Resource Monitoring Program data collected from impounded (Pool 26) and unimpounded (Open River) reaches of the upper Mississippi River, we investigated population dynamics of flathead catfish <em>Pylodictis olivaris</em>, channel catfish <em>Ictalurus punctatus</em>, and blue catfish <em>I. furcatus</em> from random sites located in side channel border (SCB) and main channel border (MCB) habitats. Objectives were to (1) compare trends (1993–2007) of three catfishes collected in Pool 26 and Open River reaches of the upper Mississippi River, and (2) provide needed information to managers on population dynamics through time using a binary gear approach of active (i.e., daytime electrofishing) and passive gears (hoopnetting). Active gears resulted in a higher catch per unit effort (CPUE) of all catfishes in each habitat–reach combination as compared to passive gears. Passive gears resulted in negligible catches of blue catfish and flathead catfishes (e.g., mean of <1 fish/net night). Catch per unit effort using active gear resulted in a greater number of channel catfish captured in Pool 26 compared to the Open River, with Open River SCB habitat having the lowest CPUE in most years. Blue catfish in the Open River had a higher CPUE using active gear as compared to Pool 26, with the Open River MCB having the greatest CPUE. Flathead catfish had a higher CPUE in MCB habitat compared to SCB habitat, with the Open River MCB having the highest CPUE in most years. However, declining trends in flathead catfish appears to be occurring in Open River habitats while trends in flathead catfish appear to be slightly increasing in Pool 26. The most common length-classes captured were substock and stock-sized fish regardless of habitat, species, or reach. Trends for channel catfish were easily determined due to high catch rates; however, more monitoring and enhanced sampling is needed to accurately assess flathead catfish and blue catfish trends and to accurately determine demographics for all three species.
Conference papers on the topic "Random peer sampling"
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Oguz, Barlas, Venkat Anantharam, and Ilkka Norros. "Stable, distributed P2P protocols based on random peer sampling." In 2012 50th Annual Allerton Conference on Communication, Control, and Computing (Allerton). IEEE, 2012. http://dx.doi.org/10.1109/allerton.2012.6483316.
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Tunurrohmin, Zela. "Application of Precede Proceed Model on Factors Affecting Depression Symptom in the Elderly: Evidence from Surakarta, Central Java." In The 7th International Conference on Public Health 2020. Masters Program in Public Health, Universitas Sebelas Maret, 2020. http://dx.doi.org/10.26911/the7thicph.01.44.
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ABSTRACT Background: Geriatric depression is a mental and emotional disorder affecting older adults. Social support is an important factor known to moderate the deleterious effects of stress in elderly. This study aimed to determine factors affecting depression symptom in the elderly using PRECEDE PROCEED model. Subjects and Method: A cross sectional study was conducted in Surakarta, Central Java. A sample of 200 elderly was selected for this study by cluster random sampling. The dependent variable was depression. The independent variables were gender, marital status, residence, education, family support, and peer support. The data were collected by questionnaire and analyzed by a multiple linear regression run on Stata 13. Results: The risk of depression in elderly increased with female (b= 5.53; 95% CI= 3.38 to 7.70; p<0.001), unmarried (b= 4.15; 95% CI=1.36 to 6.95; p= 0.004), and living at nursing home (b= 8.16; 95% CI= 5.26 to 11.06; p<0.001). The risk of depression decreased with high education (b= -5.51; 95% CI= -7.49 to -3.51; p<0.001), strong peer support (b= -2.75; 95% CI= -4.92 to -0.58; p= 0.013), and strong family support (b= -5.02; 95% CI= -7.96 to -2.09; p<0.001). Conclusion: The risk of depression in elderly increases with female, unmarried, and living at nursing home. The risk of depression decreases with high education, strong peer support, and strong family support. Keywords: depression, elderly Correspondence: Zela Tunurrohmin. Masters Program in Public Health, Universitas Sebelas Maret. Jl. Ir. Sutami 36A, Surakarta 57126, Central Java, Indonesia. Email: ze.zelatunurrohmin@gmail.com. Mobile: 082225442002. DOI: https://doi.org/10.26911/the7thicph.01.44
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Pangesti, Tri Puji, Didik Gunawan Tamtomo, and Bhisma Murti. "Multilevel Logistic Regression Analysis on the Effectiveness of Chronic Disease Management Program in Improving “Cerdik” Healthy Behavior for Hypertensive Patients." In The 7th International Conference on Public Health 2020. Masters Program in Public Health, Universitas Sebelas Maret, 2020. http://dx.doi.org/10.26911/the7thicph.04.44.
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ABSTRACT Background: The chronic disease management program (prolanis) was established in Indonesia to help people achieve optimal quality of life with cost-effective and efficient health services. The user targets were national health insurance participants who suffer from chronic disease, including hypertension and diabetes mellitus. This study aimed to examine the effectiveness of prolanis in improving “CERDIK” healthy behavior for hypertensive patients. Subjects and Method: A cross sectional study was carried out at 25 community health centers in Gunungkidul, Yogyakarta, Indonesia, from January to February 2020. A sample of 200 hypertensive patients were selected by stratified random sampling. The dependent variable was healthy behavior. The independent variables were sex, education, family support, peer support, and prolanis. The data were collected by questionnaire and analyzed by a multiple logistic regression run on Stata 13. Results: Healthy behavior in patients with hypertension increased with (b= 1.95; 95% CI= 0.76 to 3.16; p= 0.001), participative in prolanis (b= 3.93; 95% CI= 2.42 to 5.44; p<0.001), strong family support (b= 1.38; 95% CI= 0.09 to 2.67; p= 0.035), strong peer support (b= 0.50; 95% CI= -0.81 to 1.91; p= 0.427), and female (b= 0.89; 95% CI= -0.35 to 2.13; p=0.160). Community health center had contextual effect on healthy behavior with ICC= 27%. Conclusion: Healthy behavior in patients with hypertension increases with high education, participative in prolanis, strong family support, strong peer support, and female. Community health center has contextual effect on healthy behavior. Keywords: chronic disease management program, cerdik health behavior, hypertension. Correspondence: Tri Puji Pangesti. Masters Program in Public Health, Universitas Sebelas Maret. Jl. Ir. Sutami 36A, Surakarta 57126, Central Java. Email: tripujipangesti8@gmail.com. Mobile: 082312657779. DOI: https://doi.org/10.26911/the7thicph.04.44
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Marlina, Devi, Didik Gunawan Tamtomo, and RB Soemanto. "Factors Affecting the Quality of Life in Patients with Type 2 Diabetes Mellitus in Surakarta, Central Java." In The 7th International Conference on Public Health 2020. Masters Program in Public Health, Universitas Sebelas Maret, 2020. http://dx.doi.org/10.26911/the7thicph.05.39.
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ABSTRACT Background: Previous studies have shown that better glycemic control in type 2 diabetes mellitus (DM) is associated with fewer physical symptoms and better well being. The purpose of this study was to determine factors affecting the quality of life in patients with type 2 diabetes mellitus in Surakarta, Central Java. Subjects and Method: A cross-sectional study was conducted at Dr. Moewardi hospital, Surakarta, Central Java, from February to March 2020. A sample of 200 patients with type 2 DM aged ≥18 years was selected by simple random sampling. The dependent variable was quality of life. The independent variables were self-care, family support, peer support, length of disease, body mass index (BMI), and education. The data were collected by questionnaire and analyzed by a multiple logistic regression run on Stata 13. Results: Quality of life in type 2 DM patients increased with good self care (OR= 14.34; 95% CI= 1.47 to 140.06; p= 0.022), strong family support (OR= 21.52; 95% CI= 2.98 to 155.44; p=0.002), strong peer support (OR= 31.03; 95% CI= 3.14 to 306.78; p=0.003), length of disease <6 years (OR= 0.05; 95% CI= 0.01 to 0.45; p= 0.007), normal BMI (OR= 0.08; 95%= 0.01 to 0.60; p= 0.014), and education ≥Senior high school (OR= 11.76; 95% CI= 2.05 to 67.41; p= 0.006). Conclusion: Quality of life in type 2 DM patients increases with good self care, strong family support, strong peer support, length of disease <6 years, normal BMI, and education ≥Senior high school. Keywords: quality of life, type 2 diabetes mellitus Correspondence: Devi Marlina. Masters Program in Public Health, Universitas Sebelas Maret. Jl. Ir. Sutami 36A, Surakarta, Central Java. Email: devimarlinaaa94@gmail.com. Mobile:+6281340983044 DOI: https://doi.org/10.26911/the7thicph.05.39
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Ferdianto, Angga, Didik Gunawan Tamtomo, and Endang Sutisna Sulaeman. "Factors Affecting Tertiary Preventive Behaviors among Patients with High Blood Pressure." In The 7th International Conference on Public Health 2020. Masters Program in Public Health, Universitas Sebelas Maret, 2020. http://dx.doi.org/10.26911/the7thicph.01.43.
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ABSTRACT Background: The incidence of hypertension in Indonesia has remained high. Tertiary prevention of hypertension in hypertensive patients is needed to improve their knowledge toward hypertension, health belief, the practice of life-style modification, and the ability to control blood pressure. The purpose of this study was to examine factors affecting tertiary preventive behaviors among patients with high blood pressure. Subjects and Method: A cross-sectional study was carried out at 25 integrated health posts (posbindu) in Surakarta, Centra Java, from September to October 2019. A sample of 200 hypertensive patients was selected by stratified random sampling. The dependent variable was tertiary preventive behavior. The independent variables were education, attitude, subjective norm, perceived behavior control, intention, cadre support, and peer support. The data were collected by questionnaire and analyzed by a mutiple logistic regression. Results: Tertiary preventive behaviors in hypertensive patients increased with education ≥Senior high school (OR= 3.58; 95% CI= 1.62 to 7.90; p= 0.002), positive attitude (OR= 4.01; 95% CI= 1.69 to 9.54; p= 0.002), supportive subjective norm (OR= 3.88; 95% CI= 1.65 to 9.16; p= 0.002), strong perceived behavior control (OR= 2.86; 95% CI= 1.24 to 6.59; p= 0.013), strong intention (OR= 2.44; 95% CI= 1.13 to 5.26; p= 0.023), strong cadre support (OR= 4.59; 95% CI= 2.07 to 10.18; p<0.001), and strong peer support (OR= 3.77; 95% CI= 1.68 to 8.42; p= 0.001). Conclusion: Tertiary preventive behaviors in hypertensive patients increases with education ≥Senior high school, positive attitude, supportive subjective norm, strong perceived behavior control, strong intention, strong cadre support, and strong peer support. Keywords: tertiary prevention, hypertention, theory of planned behavior Correspondence: Angga Ferdianto. School of Health Sciences Ngudia Husada Madura. Jl. RE Martadinata 45, Mlajah, Bangkalan 69116, East Java, Indonesia. Email: angga.rmd@gmail.com. Mobile: +6285746555354. DOI: https://doi.org/10.26911/the7thicph.01.43
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Kumalasari, Dwi Tour, Bhisma Murti, and Vitri Widyaningsih. "Path Analysis on the Biopsychosocial Factors Influencing the Quality of Life of Elderly in Surakarta Central Java." In The 7th International Conference on Public Health 2020. Masters Program in Public Health, Universitas Sebelas Maret, 2020. http://dx.doi.org/10.26911/the7thicph.01.41.
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ABSTRACT Background: Health-related quality of life (HRQoL) is a commonly used measure of health outcome. It reflects several dimensions of health, including physical, psychological, social, cognitive function, as well as general well-being, including in elderly population. The association between social capital and HRQoL in elderly has been rarely studied in Indonesia. The purpose of this study was to investigate the biopsychosocial factors influencing the quality of life of elderly using path analysis. Subjects and Method: A cross sectional study was conducted in Surakarta, Central Java, in December 2019. A sample of 200 elderly was selected by simple random sampling. The dependent variable was quality of life. The independent variables were education, income, marital status, body mass index (BMI), physical activity, locus of control, family support, peer support, social capital. The data were collected by questionnaire and analyzed by path analysis run on Stata 13. Results: Quality of life in elderly was directly increased by high physical activity (b= 2.01; 95% CI= 0.55 to 3.45; p= 0.007), education ≥Elementary school (b= 2.38; 95% CI= 0.79 to 3.97; p= 0.003), BMI 18.5 to 25 (b= 3.45; 95% CI= 1.60 to 5.30; p<0.001), income ≥Rp 1,800,000 (b= 2.96; 95% CI= 1.33 to 4.59; p<0.001), strong social capital (b= 2.01; 95% CI= 0.56 to 3.44; p= 0.006), married (b= 2.15; 95% CI= 0.63 to 3.67; p= 0.005), and internal locus of control (b= 2.29; 95% CI= 0.69 to 3.90; p= 0.005). Quality of life in elderly was directly increased by physical activity, education, peer support, social capital, and marital status. Conclusion: Quality of life in elderly is directly increased by high physical activity, education ≥Elementary school, BMI 18.5 to 25, income ≥Rp 1,800,000, strong social capital, married, and internal locus of control. Quality of life in elderly is directly increased by physical activity, education, peer support, social capital, and marital status. Keywords: quality of life, biopsychosocial, path analysis, elderly Correspondence: Dwi Tour Kumalasari. Masters Program in Public Health, Universitas Sebelas Maret. Jl. Ir. Sutami 36A, Surakarta 57126, Central Java, Indonesia. Email: kumalasari.azzah-ra@gmail.com. Mobile: +6281216417536. DOI: https://doi.org/10.26911/the7thicph.01.41
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Islami, Shilfia Ulfa, Hanung Prasetya, and Bhisma Murti. "Factors Affecting Smoking Behavior High School Children in Dumai, Riau: Application of Theory Planned Behavior." In The 7th International Conference on Public Health 2020. Masters Program in Public Health, Universitas Sebelas Maret, 2020. http://dx.doi.org/10.26911/the7thicph.02.66.
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Background: Smoking in adolescents has negative effects on their health. Exposure to nicotine during adolescence has lasting effects on brain development. They are also at risk of asthma and impaired lung function, with a knock-on effect on their participation in physical activities. This study aimed to determine factors affecting smoking behavior high school children in Dumai, Riau. Subjects and Method: A cross sectional study was conducted at 23 Senior high schools and 12 Junior high schools in Dumai, Riau, Indonesia, from September to October 2019. A sample of 200 male adolescents aged 12-18 years was selected by stratified random sampling. The dependent variable was smoking behavior. The independent variables were family income, pocket money, media exposure, peer, parental role, intention, attitude, subjective norm, and perceived behavior control. The data were collected by questionnaire and analyzed by a multiple logistic regression run on Stata 13. Results: Smoking behavior increased with high family income (OR= 4.85; 95% CI= 1.10 to 21.41; p= 0.037), high pocket money (OR= 10.34; 95% CI= 2.32 to 45.91; p= 0.002), high media exposure (OR= 8.03; 95% CI= 1.79 to 35.92; p= 0.006), peer (OR= 8.86; 95% CI= 1.76 to 26.66; p= 0.012), smoking parents (OR= 7.91; 95% CI= 1.84 to 34.04; p= 0.005), and positive attitude (OR= 10.5; 95% CI= 2.22 to 49.79; p= 0.003). Smoking behavior decreased with weak perceived behavior control (OR= 0.11; 95% CI= 0.02 to 0.50; p= 0.004), weak intention (OR= 0.03; 95% CI= 0.005 to 0.22; p<0.001), and weak subjective norm (OR= 0.06; 95% CI= 0.01 to 0.38; p=0.005). Conclusion: Perilaku merokok pada remaja dipengaruhi oleh pendapatan orang tua, uang saku, paparan media, teman sebaya, pengaruh orang tua, sikap, persepsi kendali perilaku, niat, dan norma subjektif. Keywords: smoking behavior, adolescents Correspondence: Shilfia Ulfa Islami. Masters Program in Public Health, Universitas Sebelas Maret. Jl. Ir. Sutami 36A, Surakarta 57126, Central Java, Indonesia. Email: shilfiaulfa17@gmail.com. Mobile: 085219722029. DOI: https://doi.org/10.26911/the7thicph.02.66
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‘Arub, Lathifah, Eti Poncorini Pamungkasari, and Yulia Lanti Retno Dewi. "Multiple Logistic Regression on the Factors Affecting Exclusive Breastfeeding Practice in Karanganyar, Central Java." In The 7th International Conference on Public Health 2020. Masters Program in Public Health, Universitas Sebelas Maret, 2020. http://dx.doi.org/10.26911/the7thicph.03.89.
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ABSTRACT Background: Breastfeeding peer support helps lactating women to sustain breastfed and reduce cultural barriers. This study aimed to examine the effects of maternal age, maternal education, maternal employment, type of labor, knowledge, attitude, family support, and social capital on breastfeeding practice. Subjects and Method: A cross sectional study was conducted at 25 integrated health posts in Karanganyar, Central Java, from August to September 2019. A sample of 200 lactating mothers with children aged 7-12 months was selected by stratified random sampling. The dependent variable was exclusive breastfeeding. The independent variables were maternal age, maternal education, maternal employment, type of labor, knowledge, attitude, family support, and social capital. The data were collected by questionnaire and analyzed by a multipe logistic regression. Results: Exclusive breastfeeding increased with maternal age 20-34 years (b= 1.96; 95% CI= 0.53 to 3.39; p= 0.007), maternal education ≥Senior high school (b= 1.47; 95% CI= 0.08 to 2.87; p= 0.038), good knowledge (b= 1.73; 95% CI= 0.33 to 3.12; p= 0.015), positive attitude (b= 1.61; 95% CI= 0.28 to 2.94; p= 0.017), strong family support (b= 1.39; 95% CI= 0.13 to 2.65; p= 0.030), and strong social capital (b= 1.34; 95% CI= 0.01 to 2.68; p= 0.049). Exclusive breastfeeding decreased with mothers working outside the house (b= -2.95; 95% CI= -4.37 to -1.53; p<0.001) and sectio cesarean labor (b= -1.57; 95% CI= -3.06 to -0.08; p= 0.039). Conclusion: Exclusive breastfeeding increases with maternal age 20-34 years, maternal education ≥Senior high school, good knowledge, positive attitude, strong family support, and strong social capital. Exclusive breastfeeding decreases with mothers working outside the house and sectio cesarean labor. Keywords: exclusive breastfeeding, bipsychosocial Correspondence: Lathifah ‘Arub. Masters Program in Public Health, Universitas Sebelas Maret. Jl. Ir. Sutami 36A, Surakarta 57126, Central Java, Indonesia. Email: lathifah.arub17@gmail.com. Mobile: +625789212539. DOI: https://doi.org/10.26911/the7thicph.03.89
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Kuczera, Ramon C., Zissimos P. Mourelatos, and Efstratios Nikolaidis. "System RBDO With Correlated Variables Using Probabilistic Re-Analysis and Local Metamodels." In ASME 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/detc2010-28130.
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A simulation-based, system reliability-based design optimization (RBDO) method is presented that can handle problems with multiple failure regions and correlated random variables. Copulas are used to represent dependence between random variables. The method uses a Probabilistic Re-Analysis (PRRA) approach in conjunction with a sequential trust-region optimization approach and local metamodels covering each trust region. PRRA calculates very efficiently the system reliability of a design by performing a single Monte Carlo (MC) simulation per trust region. Although PRRA is based on MC simulation, it calculates “smooth” sensitivity derivatives, allowing the use of a gradient-based optimizer. The PRRA method is based on importance sampling. One requirement for providing accurate results is that the support of the sampling PDF must contain the support of the joint PDF of the input random variables. The trust-region optimization approach satisfies this requirement. Local metamodels are constructed sequentially for each trust region taking advantage of the potential overlap of the trust regions. The metamodels are used to determine the value of the indicator function in MC simulation. An example with correlated input random variables demonstrates the accuracy and efficiency of the proposed RBDO method.
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Manteufel, Randall D., and Jason B. Pleming. "Assessing Hypercube Sampling Techniques for Risk Assessment." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-81656.
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Two variations of hypercube sampling techniques are introduced and computationally tested using benchmark problems. The methods are variations of the Latin hypercube sampling (LHS) and incremental-fractional LHS scheme. Both can be described as stratified sampling with one sample per strata. Because they ensure uniform marginals, they are observed to have computational advantages for linear problems where weighted response statistics are sought. Advantages are less pronounced for non-linear responses and sorted statistics, which is often the case for risk analysis. The complementary cumulative distribution is identified as being helpful in assessing a methods performance. Both methods are applied to an application problem having multiple responses of interest and 48 uncertain inputs. The hypercube methods are noted to produce estimates of the mean with orders-of-magnitude lower variance than that of simple random sampling.
Reports on the topic "Random peer sampling"
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Peitz, David, and Naomi Reibold. Bird community monitoring at Wilson’s Creek National Battlefield, Missouri: Status report 2008–2020. Edited by Tani Hubbard. National Park Service, November 2021. http://dx.doi.org/10.36967/nrr-2287875.
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Breeding bird surveys were initiated on Wilson’s Creek National Monument, Missouri, in 2008 to assess temporal changes in the species composition and abundance of birds on the park and to improve our understanding of relationships between breeding birds and their habitat and the effects of management actions, such as invasive plant species control and tree thinning, on bird populations. Birds were sampled using point counts with 38 variable circular plots located on a systematic grid of 400 x 400-m cells (originating from a random start point). All birds seen or heard on a plot during a 5-min sampling period were recorded. In the 13 years since initiating our breeding bird survey, birds were surveyed on as many of the 38 variable circular plots as possible each year, resulting in 444 cumulative plot visits. Surveys have yielded records for 119 different species of birds. Ninety-eight of the species recorded are classified as permanent or summer residents to the area, 18 are classified as transients in the area, and 3 as winter residents to the area. Eight breeding species recorded are considered species of conservation concern for the Central Hardwoods Bird Conservation Region, the bird conservation region in which Wilson’s Creek National Battlefield is located. Of the 98 breeding species recorded, 12 species in grassland habitat and 15 in woodland habitat occurred in numbers large enough to calculate annual abundances with some degree of confidence. Trends in abundance were classified as uncertain for most species, which means that no significant increases or decreases occurred but it is not certain that trends were <5% per year. The Indigo Bunting (Passerina cyanea) population in grassland habitat was stable. The Eastern Towhee (Pipilo erythrophthalmus) and Eastern Wood-pewee (Contopus virens) populations in woodland habitat were in moderate decline. Comparing population trends on the park with regional trends for the Central Hardwoods Bird Conservation Region suggests that the bird community at Wilson’s Creek National Battlefield is faring similarly to that of the region as a whole. Stable diversity, richness, and evenness values suggest that the park’s habitat has remained consistent in its ability to meet the requirements of many of the park’s breeding bird species. Any decline in species richness could reflect habitat management practices, but it could also reflect the influences of larger-scale factors such as weather or climatic conditions on vegetation. Therefore, continued monitoring of birds and their habitats on Wilson’s Creek National Battlefield as management and weather and climatic conditions change is essential for park management.
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Peitz, David, and Naomi Reibold. Bird community monitoring at George Washington Carver National Monu-ment, Missouri: Status report 2008–2020. Edited by Tani Hubbard. National Park Service, November 2021. http://dx.doi.org/10.36967/nrr-2287852.
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Breeding bird surveys were initiated on George Washington Carver National Monument, Missouri, in 2008 to assess temporal changes in the species composition and abundance of birds on the park and to improve our understanding of relationships between breeding birds and their habitat and the effects of management actions, such as invasive plant species control and tree thinning, on bird populations. Birds were sampled using point counts with 70 variable circular plots located on a systematic grid of 100 x 100-m cells (originating from a random start point). All birds seen or heard on a plot during a 5-min sampling period were recorded. In the 13 years since initiating our breeding bird surveys on the park, birds were surveyed on as many of the 70 variable circular plots as possible each year, resulting in 520 cumulative plot visits. Surveys have yielded records for 100 different species of birds. Ninety-seven of the species recorded are classified as permanent or summer residents to the area, two are classified as transients in the area, and one as a winter resident to the area. Six breeding species recorded are considered species of conservation concern for the Central Hardwoods Bird Conservation Region, the bird conservation region in which George Washington Carver National Monument is located. Of the 97 breeding species recorded, ten species in grassland habitat and six in woodland habitat occurred in numbers large enough to calculate annual abundances with some degree of confidence. Trends in abundance were classified as uncertain for most species, which means that there were no significant increases or decreases, but it is not certain that trends were < 5% per year. The Northern Cardinal (Cardinalis cardinalis) in woodland habitat was stable. The Eastern Meadowlark (Sturnella magna) in grassland habitat was in moderate decline, and the Northern Bobwhite (Colinus virginianus) in grassland habitat was in steep decline. Comparing population trends (i.e., changes in population size over time) on the park with regional trends for the Central Hardwoods Bird Conservation Region suggests that the bird community at George Washington Carver National Monument is faring similarly to that of the region as a whole. Trends in the park’s popula-tions of Field Sparrow (Spizella pusilla) and Indigo Bunting (Passerina cyanea) in grassland habitat and Carolina Wren (Thryothorus ludovicianus) in woodland habitat were uncertain, whereas they declined significantly in the larger region, which could be a result of management on George Washington Carver National Monument. Red-bellied Woodpecker (Melanerpes carolinus) population trends, while uncertain in grassland habitat on the park, increased significantly in the region. The Red-bellied Woodpecker utilizes trees for foraging, which are sparse in the grassland habitat on the park. Declining diversity and richness values suggest that park habitat is declining in its ability to meet the requirements of many of the park’s breeding bird species. This decline in species richness could reflect habitat management practices, but it could also reflect the influences of larger-scale factors such as weather or climatic conditions on vegetation. Therefore, continued monitoring of birds and their habitats on George Washington Carver National Monument as management and weather and climatic conditions change is essential for park management.