scholarly journals A review of Sensors, Sensor-Platforms and Methods Used in 3D Modelling of Soil Displacement after Timber Harvesting

2020 ◽  
Vol 42 (1) ◽  
pp. 149-164
Author(s):  
Bruce Talbot ◽  
Rasmus Astrup
Keyword(s):  
Sampling Design ◽  
Ground Surface ◽  
Timber Harvesting ◽  
Mobile Platforms ◽  
Design Data ◽  
Proximal Sensing ◽  
Sensor Platforms ◽  
Soil Displacement ◽  
Micro Topography ◽  
Insight Into

Proximal sensing technologies are becoming widely used across a range of applications in environmental sciences. One of these applications is in the measurement of the ground surface in describing soil displacement impacts from wheeled and tracked machinery in the forest. Within a period of 2–3 years, the use photogrammetry, LiDAR, ultrasound and time-of-flight imaging based methods have been demonstrated in both experimental and operational settings. This review provides insight into the aims, sampling design, data capture and processing, and outcomes of papers dealing specifically with proximal sensing of soil displacement resulting from timber harvesting. The work reviewed includes examples of sensors mounted on tripods and rigs, on personal platforms including handheld and backpack mounted, on mobile platforms constituted by forwarders and skidders, as well as on unmanned aerial vehicles (UAVs). The review further highlights and discusses the benefits, challenges, and some of the shortcomings of the various technologies and their application as interpreted by the authors.The majority of the work reviewed reflects pioneering approaches and innovative applications of the technologies. The studies have been carried out almost simultaneously, building on little or no common experience, and the evolution of standardized methods is not yet fully apparent. Some of the issues that will likely need to be addressed in developing this field are (i) the tendency toward generating apparently excessively high resolution micro-topography models without demonstrating the need for or contribution of such resolutions on accuracy, (ii) the inadequacy of conventional manual measurements in verifying the accuracy of these methods at such high resolutions, and (iii) the lack of a common protocol for planning, carrying out, and reporting this type of study.

A sequential approach to sampling design for time studies of cable yarding operations

1989 ◽  
Vol 19 (8) ◽  
pp. 973-980 ◽  
Author(s):  
Andrew F. Howard
Keyword(s):  
Data Collection ◽  
Real Time ◽  
Sequential Analysis ◽  
Sampling Design ◽  
Analysis Data ◽  
Timber Harvesting ◽  
Sequential Approach ◽  
Design Data ◽  
Cable Yarding ◽  
Analysis System

Comprehensive sampling design including determination of the distribution, number of observations and specification of desired levels of precision is typically ignored in time studies of yarding operations. A computer-based data collection, processing, and analysis system was developed for time studies that permits improved sampling design. Data collection programs were written for continuous timing of yarding operations and downloaded on to hand-held computers equipped with real-time clocks. After each shift of observation, the time study data are uploaded to a portable microcomputer. The data are then processed through a series of programs that provide error checking, cataloging, and formatting in preparation for analysis. Data from three cable yarding operations were used in a study to assess the potential for sequential design and to determine precision levels obtainable from short-duration time studies. Confidence intervals were computed cumulatively and used to assess whether additional observation of a specific machine on a particular site was justified. The data collection, processing, and real-time analysis system shows promise as a technique for improving sampling design of time studies for timber harvesting operations through sequential analysis of the data.

“I Wish I Could Have My Leg”: A Qualitative Study on the Experiences of Individuals With Lower Limb Amputation

2021 ◽  
pp. 105477382110477
Author(s):  
Cigdem Canbolat Seyman ◽  
Yeter Sinem Uzar Ozcetin
Keyword(s):  
Lower Limb ◽  
Qualitative Data ◽  
Body Part ◽  
Lower Limb Amputation ◽  
Limb Amputation ◽  
Design Data ◽  
Software Support ◽  
Permanent Disability ◽  
Phenomenological Design ◽  
Insight Into

Amputation is commonly regarded as a lifesaving procedure. However, the loss of a body part can lead to permanent disability that can impact patients physically, psychologically, and socially. The aim of this study was to describe and understand the perspectives of patients with lower limb amputation (LLA) about their condition. The study uses a descriptive phenomenological design. Data were collected from 12 patients. The researchers conducted interviews using semi-structured questions. MAXQDA was used for qualitative software support in managing the interview data. Data were transcribed. The participants were aged 61.3 ± 10.8 years. Three themes emerged from the qualitative data: (i) losing control over one’s own life, (ii) dreams versus the realities of life, and (iii) future perceptions. Most of the participants emphasized that they face undesirable experiences in their post-amputation lives. The findings of the present study provide novel insight into how individuals subjectively experience life after LLA.

scholarly journals ESTUDO PRELIMINAR DA VARIAÇÃO DE MICRO-FORMAS E DA COBERTURA VEGETAL NA GERAÇÃO DO RUNOFF E PERDA DE SOLO EM VERTENTE DO MUNiCÍPIO DE GOUVEIA/MG

2000 ◽  
Author(s):  
Valéria. C.C. Barbosa ◽  
Cristina H.R.R. Augustin
Keyword(s):  
Vegetation Cover ◽  
Ground Surface ◽  
Soil Surface ◽  
Minas Gerais ◽  
Mechanical Work ◽  
Natural Conditions ◽  
Lower Slope ◽  
Micro Topography

This study intents to analyze with the mechanical work of the rain runoff in the region of Gouveia - EspinhaçoMeridional, State of Minas Gerais, Brazil, under natural conditions and not induced rainfall. It showssignificant differences in the denudation processes taking place on the ground surface, due to the variationof micro-forms and the vegetation cover.The hydro-erosive date for the period between February and September/00 indicate a more acceleratedlowering of the ground surface on the lower slope. In the areas with lower vegetation cover, the runoff flowcuts down the soil surface, deepening the micro-ravines. In other places of the slope where the hydrologicalforces are week and vegetation cover thicker, a higher stability of the micro- topography and a more moderatedeposition of the sediments can be observed.

scholarly journals HUBUNGAN KEDEWASAAN MAHASISWA FAKULTAS KEDOKTERAN PROGRAM STUDI KEDOKTERAN UMUM ANGKATAN 2012 UNIVERSITAS SAM RATULANGI TERHADAP CARA BERSOSIALISASI

2013 ◽  
Vol 1 (1) ◽  
Author(s):  
Citra F. Karim ◽  
Jehosua S. V. Sinolungan ◽  
Henry Opod
Keyword(s):  
Moral Development ◽  
Random Sampling ◽  
Sampling Design ◽  
Female Students ◽  
Stratified Random Sampling ◽  
Social Emotional ◽  
Design Data ◽  
Pearson Product Moment Correlation ◽  
Correlation Test ◽  
The Relationship

Abstract: In general, maturity means a state of a person releted to his/her physical, mental, social, emotional, spiritual, and moral development. Humanbeings are social creatures for the whole periods of lives. This study aimed to find out the relationship between the maturity of students of Faculty of Medicine, University of Sam Ratulangi Manado 2012 and their socialization. This was an analytic study with stratified random sampling design. Data were collected by using questionairres. There were 47 respondents, consisted of 16 male and 31 female students. Data were analyzed by using Pearson – product moment correlation test. The results showed that 47 respondents (97.9%) had good maturity and one respondent (2.1%) fair maturity. About their socialization, six respondents (12.8%) were categorized as good; 39 respondents (83%) fair; and two respondents (4.3%) bad. Correlation test showed r = -0.116 and P = 0.219. Conclusion: there were no relationship between maturity and socialization among students of Faculty of Medicine, University of Sam Ratulangi Manado 2012. Keywords: maturity, socialization, students   Abstrak: Kedewasaan adalah status seseorang yang telah memiliki kematangan baik secara fisik, kemampuan mental, pertumbuhan sosial, emosi, serta pertumbuhan spiritual dan moral. Pada dasarnya sosialisasi dialami oleh individu sebagai makhluk sosial sepanjang kehidupannya sejak dilahirkan sampai meninggal dunia. Penelitian ini bertujuan untuk mengetahui ada tidaknya hubungan antara kedewasaan mahasiswa Fakultas Kedokteran Universitas Sam Ratulangi Manado angkatan 2012 dan cara bersosialisasi. Jenis penelitian ini bersifat analitik dengan teknik pengambilan sampel stratified random sampling. Metode pengumpulan data dengan menggunakan kuesioner. Penelitian dilakukan pada 47 responden, terdiri dari 16 laki-laki dan 31 perempuan. Analisis data menggunakan uji statistik yaitu uji korelasi Pearson – product moment. Hasil penelitian memperlihatkan jumlah mahasiswa yang memiliki kedewasaan baik sebanyak 46 responden (97,9%) dan satu responden (2,1%) cukup. Jumlah mahasiswa yang memiliki sosialisasi kategori baik sebanyak enam responden (12,8%), kategori cukup 39 responden (83%), serta dua responden (4,3%) kurang. Berdasarkan uji korelasi Pearson-product moment didapatkan r = -0,116 dengan  P = 0,219. Simpulan: pada mahasiswa Fakultas Kedokteran Unsrat angkatan 2012 tidak terdapat hubungan antara kedewasaan dan sosialisasi Kata kunci : kedewasaan, sosialisasi, mahasiswa

scholarly journals Evaluating passing ability in association football

2019 ◽  
Vol 31 (1) ◽  
pp. 91-116 ◽  
Author(s):  
Else Marie Håland ◽  
Astrid Salte Wiig ◽  
Magnus Stålhane ◽  
Lars Magnus Hvattum
Keyword(s):  
Mixed Models ◽  
Predictive Power ◽  
Ground Surface ◽  
Football Players ◽  
Factors Affecting ◽  
Generalized Additive Mixed Models ◽  
Additive Mixed Models ◽  
Passing Ability ◽  
The Relationship ◽  
Insight Into

Abstract In this paper, the passing ability of football players is determined by building three generalized additive mixed models that each explains a different aspect of a pass’ success: difficulty, risk and potential. The models are built on data from the 2014–2016 seasons of the Norwegian top division Eliteserien, and their predictive power is tested on the 2017 season. The results provide insight into the factors affecting the success of a pass in Eliteserien. These include the location of the pass, the relationship to previous passes and to situations such as throw-ins, corners, free kicks or tackles, as well as conditions specific to the Eliteserien, such as the time of season and the ground surface type. Finally, the key pass makers in the league are identified.

Cutting Activity on West Virginia Timberlands

1992 ◽  
Vol 9 (4) ◽  
pp. 146-148 ◽  
Author(s):  
Thomas W. Birch ◽  
David A. Gansner ◽  
Stanford L. Arner ◽  
Richard H. Widmann
Keyword(s):  
West Virginia ◽  
Forest Inventory ◽  
Timber Harvesting ◽  
The Past ◽  
Potential Opportunity ◽  
Insight Into ◽  
Recent Government ◽  
Woodland Owners

Abstract A recently completed forest inventory and woodland owner survey have given us insight into contemporary cutting activities in West Virginia. About one-third of the private woodland owners have harvested timber from their holdings at some time in the past and they control two-thirds of the private timberland. Although timber harvesting has increased in recent years, it remains a concentrated activity. Remeasured plot data show that only 24% of the timberland had cutting disturbance between the last two inventories. Four-fifths of the cutting took place on one-tenth of the timberland. The timber resource is ripe for more cutting, landowner attitudes have changed to favor increased harvesting, and recent government initiatives support a climate for timber development. There is no denying that physical supplies of timber and landowner intentions reveal a potential opportunity for significant expansion in wood use. North. J. Appl. For. 9(4):146-148.

Characterization of Blast Effects on Surrounding Soil: Internal Detonations in Underground Pipes

2011 ◽  
Vol 82 ◽  
pp. 302-307 ◽  
Author(s):  
Pamela Bonalumi ◽  
Matteo Colombo ◽  
Cesare Comina ◽  
Marco di Prisco ◽  
Sebastiano Foti ◽  
...  
Keyword(s):  
Ground Surface ◽  
Mechanical Parameters ◽  
Buried Pipeline ◽  
Acceleration Time ◽  
Blast Effects ◽  
Acceleration Time Histories ◽  
Time Histories ◽  
Insight Into ◽  
Surrounding Soil

Preliminary results from a series of blast tests within a buried pipeline are reported. The paper is mainly focused on the characterization of the site, providing an insight into the effects of different basting events in terms of soil mechanical parameters. The blasts have been monitored by means of accelerometers embedded in the ground and placed on the ground surface. The recorded acceleration time histories show a strong attenuation as the wave travels away from the source.

scholarly journals Pengetahuan dan Sikap Wanita Mengenai Kanker Serviks dan Pap Smear Di RSU. Hermana Lembean Bulan November-Desember Tahun 2013

e-CliniC ◽  
2014 ◽  
Vol 2 (1) ◽  
Author(s):  
Andrew Batas ◽  
S. Mongan ◽  
Maya Mewengkang
Keyword(s):  
Cervical Cancer ◽  
Developing Countries ◽  
World Wide ◽  
Sampling Design ◽  
Pap Smear ◽  
Design Data ◽  
Poor Knowledge ◽  
Purposive Sampling ◽  
Knowledge And Attitude ◽  
Descriptive Method

Abstract: Cervical cancer is a very dangerous disease and is still a serious problem world-wide. It is estimated that there are approximately 500,000 new cases every year which mostly occur in developing countries. In recent years after the introduction of cervical cancer screening, the incidence of cervical cancer has decreased. This study aimed to describe the knowledge and attitude of women toward cervical cancer and Pap’s smears. This study used a descriptive method. Samples were 50 women obtained by using a purposive sampling design. Data were collected by using questionnaires. The results showed that as many as 40 samples (80 %) had good knowledge and 10 samples (20 %) had poor knowledge. Meanwhile, there were as many as 47 samples (94 %) showed agreement and 3 samples (6 %) showed disagreement. Conclusion: Among most women in  Hermana Lembean Hospital, education can affect their attitude toward cervical cancer. Keywords: cervical cancer, Pap smear, attitude, knowledge   Abstrak: Kanker serviks merupakan suatu penyakit yang sangat berbahaya dan masih menjadi masalah yang serius di dunia. Selain itu, kanker serviks merupakan penyebab kematian terbanyak akibat penyakit kanker pada wanita. Diperkirakan setiap tahun ditemukan sekitar 500.000 kasus baru yang umumnya terjadi di negara berkembang. Dalam beberapa tahun terakhir insiden kanker serviks mengalami penurunan setelah skrining kanker serviks menjadi popular. Penelitian ini bertujuan untuk menggambarkan hubungan tingkat pengetahuan dan sikap wanita terhadap kanker serviks dan Pap’s smear. Metode penelitian deskriptif dengan rancangan purposive sampling sebanyak 50 orang wanita. Pengumpulan data menggunakan kuesioner. Hasil penelitan memperlihatkan bahwa sebanyak 40 orang (80%) sampel memiliki pengetahuan baik sedangkan 10 sampel (20%) memiliki pengetahuan kurang baik. Untuk sikap, sebanyak 47 sampel (94%) memiliki sikap setuju sedangkan 3 orang (6%) memiliki sikap tidak setuju. Simpulan: Pada sebagian besar wanita-wanita di RSU Hermana Lembean, pengetahuan berpengaruh pada perilaku terhadap kanker serviks. Kata kunci: kanker serviks, pap smear, sikap, pengetahuan

scholarly journals Applying geoscience to biodiversity monitoring: Case studies from an Australian marine park

2018 ◽  
Author(s):  
Rachel Przeslawski ◽  
Kim Picard ◽  
Scott Nichol ◽  
Ben Radford ◽  
Phil Bouchet
Keyword(s):  
Sampling Design ◽  
Spatial Scales ◽  
Biological Data ◽  
Trend Detection ◽  
Design Data ◽  
Sediment Grain Size ◽  
Marine Park ◽  
Management Plans ◽  
Robust Modelling ◽  
Research And Policy

Following the establishment of the world’s largest network of marine protected areas, Australia is now tasked with implementing national plans to manage a huge range of marine environments, from tropical to sub-Antarctic climates and shallow reef to abyssal depths. Monitoring (i.e. condition assessment and trend detection) is one of the key objectives of associated management plans. As part of a national effort to acquire baseline data for future monitoring purposes from 2009 to 2012, we collected geoscientific (bathymetry, backscatter, sub-bottom profiles, sediment grain-size) and biological data (assemblages and richness of infauna, sponges and pelagic fish) using a variety of gear (grab, sled, pelagic baited video, multibeam sonar, sparker) from the Oceanic Shoals Australian Marine Park in northern Australia. In this presentation, we describe how the integration of such data (including derived geoscientific products) helped to inform sampling design, map habitats, predict the distribution of benthic and pelagic communities at varying spatial scales, and better understand ecosystem processes. We hope to encourage ecologists and marine managers to incorporate geoscientific methods into their research and policy in order to further improve sampling design, data collection, robust modelling, and informed decision-making.

scholarly journals Internet Addiction and Its Associated Factors among School-going Adolescents in Malaysia

2021 ◽  
Vol 11 (02) ◽  
pp. 1466-1473
Author(s):  
Muhd Hafizuddin Taufik ◽  
◽  
Muhammad Solihin Rezali ◽  
Nik Adilah Shahein ◽  
Norhafizah Sahril ◽  
...  
Keyword(s):  
Internet Addiction ◽  
Sampling Design ◽  
Cross Sectional Study ◽  
Cluster Sampling ◽  
Parental Supervision ◽  
Design Data ◽  
Cross Sectional ◽  
Keywords Internet ◽  
Chinese Ethnicity ◽  
Self Administered Questionnaire

Introduction: Internet usage has changed the way adolescents socialize. This study aims to determine the determinants of internet addiction among school-going adolescents in Malaysia. Methodology: This study was a cross-sectional study involving 27,455 school-going adolescents from 212 selected schools in Malaysia, as part of the 2017 National Health and Morbidity Survey that implemented a two-stage stratified cluster sampling design. Data collection via a self-administered questionnaire was conducted from March till May 2017. Results: Overall, 8,049 (29.0%) school-going adolescents had internet addiction. Internet addiction was positively associated with male (odds ratio, OR [95% confidence interval, CI] = 1.20 [1.08,1.34]) compared to female, Chinese ethnicity (1.67 [1.12,2.48]) compared to other ethnicity, feeling loneliness (1.37 [1.20,1.57]) compared to never feel lonely, unable to sleep due to worrying of something (1.40 [1.17,1.67]) compared to able to sleep, insufficient parental supervision (1.30 [1.14,1.48]) compared to sufficient parental supervision, depression (1.67 [1.48,1.89]) compared to no depression, anxiety (2.12 [1.95,2.30]) compared to no anxiety and stress (2.26 [1.96,2.61]) compared to no stress. The odds of having internet addiction increase from Form 2 (1.51 [1.28,1.78]), Form 3 (2.37 [2.01,2.80]), Form 4 (2.60 [1.76,3.85]) to Form 5 adolescents (2.96 [1.98,4.41]) compared to Form 1 adolescents. Conclusion: Our results suggest that being a male, of Chinese ethnicity, higher form level, feeling loneliness, unable to sleep due to worrying of something, insufficient parental supervision, depression, anxiety and stress were positively associated with internet addiction among school-going adolescents. Keywords: Internet addiction – public health – adolescents – NHMS - Malaysia

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