RELATING WEATHER TO OUTBREAKS OF WESTERN SPRUCE BUDWORM, CHORISTONEURA OCCIDENTALIS (LEPIDOPTERA: TORTRICIDAE), IN BRITISH COLUMBIA

1984 ◽  
Vol 116 (3) ◽  
pp. 375-381 ◽  
Author(s):  
A. J. Thomson ◽  
R. F. Shepherd ◽  
J. W. E. Harris ◽  
R. H. Silversides
Keyword(s):  
British Columbia ◽  
Spruce Budworm ◽  
Western Spruce Budworm ◽  
Forest Insect ◽  
Outbreak Area ◽  
Larval Emergence ◽  
Weather Parameters ◽  
Relationship Of ◽  
The Relationship

AbstractThe relationship of western spruce budworm outbreaks and population collapse to weather parameters was examined using long term weather records from two stations in the budworm outbreak area of British Columbia and outbreak patterns obtained from Forest Insect and Disease Survey records and from tree stem analyses.Outbreaks were associated with warm dry summers in conjunction with synchrony of larval emergence and bud flush. Collapse of the last two outbreaks was clearly associated with extreme high temperatures following moth flight. Collapse of the earlier outbreaks may have been due to asynchrony between larval emergence and bud flush.

ESTIMATING NUMBER OF WESTERN SPRUCE BUDWORM EGGS FROM EGG MASS MEASUREMENTS IN BRITISH COLUMBIA

1982 ◽  
Vol 114 (7) ◽  
pp. 643-645 ◽  
Author(s):  
J. W. E. Harris ◽  
A. F. Dawson
Keyword(s):  
British Columbia ◽  
Extended Period ◽  
Spruce Budworm ◽  
Douglas Fir ◽  
Population Trends ◽  
Egg Mass ◽  
Western Spruce Budworm ◽  
Growth Loss ◽  
Insect Populations ◽  
The Relationship

Western spruce budworm, Choristoneura occidentalis Freeman, periodically attacks Douglas-fir (Pseudotsuga menziesii (Mirbel) Franco) in British Columbia, causing mortality, deformity, and growth loss. Insect populations are assessed annually by the Canadian Forestry Service's Forest Insect and Disease Survey, by branch sampling for egg mass densities; predictions of population trends and damage are based on these assessments. Eggs, laid in rows in masses affixed to needles, are a preferred stage to sample because they are easily collected, remain fixed in numbers for an extended period, and precede damage by sufficient time to plan suppression or other programs. Numbers of masses alone, however, may not show population trends accurately as egg numbers per mass varies. Thus it is sometimes necessary to count eggs (Miller 1957), which is a formidable task. Fortunately egg numbers can be estimated from the dimensions of egg masses (Washburn and Brickell 1973). In this study, we determined the relationship between egg numbers and egg mass length and number of rows for samples from Douglas-fir stands frequently affected by spruce budworm throughout British Columbia. Data were collected over 3 years, 1977-79, during which time budworm populations were in a period of decline.

scholarly journals Association of electronic cigarette usage and nicotine consumption frequency of young adults in British Columbia

2019 ◽  
Author(s):  
Adora Kwong ◽  
BCIT School of Health Sciences, Environmental Health ◽  
Dale Chen
Keyword(s):  
British Columbia ◽  
Young Adults ◽  
Online Survey ◽  
Electronic Cigarette ◽  
Health Concern ◽  
Consumption Frequency ◽  
Nicotine Consumption ◽  
Relationship Of ◽  
The Relationship

Background Electronic e-cigarette ever users has been increasing as of 2015, the most prevalent ever users being young adults aged 20-24 years old. The implication of e-cigarette ever user developing into long term users is a emerging public health concern. Methods Electronic cigarette usage frequency and nicotine consumption was measured through a self-administered online survey of young adults (n= 54). Survey was advertised through social media sites between January 2019 till February 2019. Descriptive and inferential statistic was conducted using NCSS 12 to examine the association between electronic cigarette usage and nicotine consumption. Results Among young adults aged 19 to 24 years old, the frequency of e-cigarette usage was 51% high usage, 31% no usage and 16% medium and low usage. For nicotine consumption, respondents were 25% daily, 40% no use, 18% infrequent, and 14.8% frequent. Conclusion There is an association between more frequent electronic cigarette usage and higher nicotine consumption among young adults in British Columbia. Frequency e-cigarette users were found to consumption nicotine at higher frequency then non users. Further research is needed to fully understand the extent of the relationship of if e-cigarette usage promotes daily nicotine consumption or daily nicotine consumption results in higher e-cigarette usage.  

scholarly journals Domain randomization-enhanced deep learning models for bird detection

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Xin Mao ◽  
Jun Kang Chow ◽  
Pin Siang Tan ◽  
Kuan-fu Liu ◽  
Jimmy Wu ◽  
...  
Keyword(s):  
Deep Learning ◽  
Continuous Monitoring ◽  
Bird Species ◽  
Training Data ◽  
Learning Models ◽  
Fine Grained ◽  
Bird Detection ◽  
Relationship Of ◽  
The Relationship

AbstractAutomatic bird detection in ornithological analyses is limited by the accuracy of existing models, due to the lack of training data and the difficulties in extracting the fine-grained features required to distinguish bird species. Here we apply the domain randomization strategy to enhance the accuracy of the deep learning models in bird detection. Trained with virtual birds of sufficient variations in different environments, the model tends to focus on the fine-grained features of birds and achieves higher accuracies. Based on the 100 terabytes of 2-month continuous monitoring data of egrets, our results cover the findings using conventional manual observations, e.g., vertical stratification of egrets according to body size, and also open up opportunities of long-term bird surveys requiring intensive monitoring that is impractical using conventional methods, e.g., the weather influences on egrets, and the relationship of the migration schedules between the great egrets and little egrets.

Technology and Employment in Developing Countries

1978 ◽  
Vol 16 (4) ◽  
pp. 549-564 ◽  
Author(s):  
J. W. Garmany
Keyword(s):  
Developing Countries ◽  
Optimum Combination ◽  
Current Consumption ◽  
The Creation ◽  
Relationship Of ◽  
The Relationship ◽  
Choice Of Technology

This article discusses some of the issues involved in the choice of technology in developing countries, especially those in Africa, and the relationship of this to employment and output. The problem is to find an optimum combination of productive resources that comes nearest to satisfying two objectives: the full and economically efficient utilisation of such resources, and the creation of as much surplus as possible over current consumption, thereby making possible new investment and long-term growth.

scholarly journals The Relationship between Reputation, Customer Satisfaction, Trust, and Loyalty

2014 ◽  
Vol 4 (3) ◽  
pp. 368 ◽  
Author(s):  
Roshana Gul
Keyword(s):  
Customer Satisfaction ◽  
Customer Loyalty ◽  
Significant Relationship ◽  
Positive Sign ◽  
Medical College ◽  
Independent Variable ◽  
Relationship Of ◽  
The Relationship ◽  
Self Administered Questionnaire

Though a lot of studies have been done to conclude customer loyalty as dependent variable but still there is a vast margin of researches to be conducted in future in different spheres of this construct. On the other hand the truth of the importance of customer loyalty as an enduring asset cannot be falsified. It is fundamental for organizations to build up long term and mutual beneficial associations with the customers. The purpose of this research paper is to show the inter relationship of reputation, customer satisfaction and trust on customer loyalty. According to the observations reputation is the major independent variable that has significant relationship with customer satisfaction, customer loyalty, and trust. Data for this research study was taken from the Islamia University, Quaid-e-Azam Medical College, and different banks located at various geographic locations of Bahawalpur region of Pakistan. Data was collected through self administered questionnaire and analyzed by using regression through SPSS. The results have been drawn from 150 users of NISHAT LINEN and it was found that there is positive and significant relationship among reputation, customer satisfaction, trust and customer loyalty. Hence the studies give the positive sign that with the increment of reputation, customer satisfaction and trust the customer loyalty enhances.  

scholarly journals Astrometric and Photometric Variability in Quasars

2009 ◽  
Vol 5 (S267) ◽  
pp. 103-103
Author(s):  
A. H. Andrei ◽  
S. Bouquillon ◽  
J. L. Penna ◽  
F. Taris ◽  
S. Anton ◽  
...  
Keyword(s):  
Strong Support ◽  
Optical Emission ◽  
Optical Observations ◽  
Massive Black Hole ◽  
Full Account ◽  
Photometric Variability ◽  
Central Engine ◽  
Relationship Of ◽  
The Relationship

Quasars are the choicest objects to define a quasi-inertial reference frame. At the same time, they are active galactic nuclei powered by a massive black hole. As the astrometric precision of ground-based optical observations approaches the limit set by the forthcoming GAIA mission, astrometric stability can be investigated. Though the optical emission from the core region usually exceeds the other components by a factor of a hundred, the variability of those components must surely imply some measure of variability of the astrometric baricenter. Whether this is confirmed or not, it puts important constraints on the relationship of the quasar's central engine to the surrounding distribution of matter. To investigate the correlation between long-term optical variability and what is dubbed as the “random walk” of the astrometric center, a program is being pursued at the WFI/ESO 2.2m. The sample was selected from quasars known to undergo large-amplitude and long-term optical variations (Smith et al. 1993; Teerikorpi 2000). The observations are typically made every two months. The treatment is differential, comparing the quasar position and brightness against a sample of selected stars for which the average relative distances and magnitudes remain constant. The provisional results for four objects bring strong support to the hypothesis of a relationship between astrometric and photometric variability. A full account is provided by Andrei et al. (2009).

scholarly journals Adjacency to a harvest trail increases drought resistance of interior Douglas-fir (Pseudotsuga menziesii var. glauca) in partially harvested stands in central British Columbia

2018 ◽  
Vol 48 (7) ◽  
pp. 809-820 ◽  
Author(s):  
Neil P. Thompson ◽  
Kathy J. Lewis ◽  
Lisa M. Poirier
Keyword(s):  
British Columbia ◽  
Drought Tolerance ◽  
Pseudotsuga Menziesii ◽  
Growth Rates ◽  
Habitat Management ◽  
Odocoileus Hemionus ◽  
Douglas Fir ◽  
Ring Analysis ◽  
The Relationship

Drought tolerance of trees may be affected by competition, but most studies quantifying the relationship do not consider the effect of stem clustering. Trees are often clustered in interior Douglas-fir (Pseudotsuga menziesii var. glauca (Mayr) Franco) forests near the grassland interface in central British Columbia due to past harvesting practices or habitat management for mule deer (Odocoileus hemionus hemionus (Rafinesque, 1817)). Climate change projections indicate continued increases in temperature, an outcome that would stress trees growing in dry environments. Trees placed in different states of competition by mechanical harvesting in the 1970s were sampled to provide a 40-year comparison of three levels of competition during 1–2 year droughts. Tree-ring analysis was used to assess the reduction in growth during drought years and resumption of growth in subsequent years. A clear separation of growth rates was evident between open-growing trees, trees on the edge of harvesting trails, and trees within the unharvested interior. Edge trees had intermediate growth rates but no differences were found in the long-term climate–growth relationship compared with open-growing trees. Both Edge and Open classes showed less relative growth reduction during droughts than Interior trees growing between harvest trails. Precipitation throughfall rates and competition for resources are likely driving short-term drought tolerance in combination with other factors.

scholarly journals Career Satisfaction Based on Trust and Proactive Personality

2020 ◽  
Vol 9 (1) ◽  
pp. 35-45
Author(s):  
Iwan Sunardi ◽  
Vini Wiratno Putri
Keyword(s):  
Career Satisfaction ◽  
Analytical Data ◽  
Sampling Technique ◽  
Test Methods ◽  
Validity And Reliability ◽  
Career Needs ◽  
Relationship Of ◽  
The Relationship ◽  
The City

The purpose of this study was to examine the effect of the trust of co-workers and proactive personalities on career satisfaction by exchanging leader-members as mediation on employees of bus assembly companies in the city of Semarang. Career satisfaction is the phase in which employees’ long-term career needs are aligned with what they get while working. Employees will always look for opportunities and trust in the organization and people who will help them in achieving career satisfaction. The sampling method uses a purposive sampling technique in the category of staff and foreman employees who have worked for more than five years with a sample of 160 employees. The analytical data in this study uses descriptive statistical test methods, instinctual tests include validity and reliability, and hypothesis testing. The tool used to test in this study uses SmartPLS 3.0. The results of this study, colleague trust cannot directly influence career satisfaction. However, it can be mediated by the exchange of leader members and produce significant influence. For further researchers, they can re-examine the relationship of coworkers’ trust with career satisfaction. And can expand the object of research or respondents under study.

scholarly journals Heart Rate Dependency and Inter-Lead Variability of the T Peak – T End Intervals

2020 ◽  
Vol 11 ◽  
Author(s):  
Irena Andršová ◽  
Katerina Hnatkova ◽  
Martina Šišáková ◽  
Ondřej Toman ◽  
Peter Smetana ◽  
...  
Keyword(s):  
Heart Rate ◽  
Three Dimensional ◽  
Rate Dependency ◽  
Rate Dependent ◽  
Heart Rate Correction ◽  
Ecg Leads ◽  
Relationship Of ◽  
The Relationship ◽  
Vector Magnitude

The electrocardiographic (ECG) assessment of the T peak–T end (Tpe) intervals has been used in many clinical studies, but several related physiological aspects have not been reported. Specifically, the sources of the Tpe differences between different ECG leads have not been systematically researched, the relationship of Tpe duration to underlying heart rate has not been firmly established, and little is known about the mutual correspondence of Tpe intervals measured in different ECG leads. This study evaluated 796,620 10-s 12-lead ECGs obtained from long-term Holters recorded in 639 healthy subjects (311 female) aged 33.8 ± 9.4 years. For each ECG, transformation to orthogonal XYZ lead was used to measure Tpe in the orthogonal vector magnitude (used as a reference for lead-to-lead comparisons) and to construct a three-dimensional T wave loop. The loop roundness was expressed by a ratio between its circumference and length. These ratios were significantly related to the standard deviation of Tpe durations in different ECG leads. At the underlying heart rate of 60 beats per minute, Tpe intervals were shorter in female than in male individuals (82.5 ± 5.6 vs 90.0 ± 6.5 ms, p < 0.0001). When studying linear slopes between Tpe intervals measured in different leads and the underlying heart rate, we found only minimal heart rate dependency, which was not systematic across the ECG leads and/or across the population. For any ECG lead, positive Tpe/RR slope was found in some subjects (e.g., 79 and 25% of subjects for V2 and V4 measurements, respectively) and a negative Tpe/RR slope in other subjects (e.g., 40 and 65% for V6 and V5, respectively). The steepest positive and negative Tpe/RR slopes were found for measurements in lead V2 and V4, respectively. In all leads, the Tpe/RR slope values were close to zero, indicating, on average, Tpe changes well below 2 ms for RR interval changes of 100 ms. On average, longest Tpe intervals were measured in lead V2, the shortest in lead III. The study concludes that the Tpe intervals measured in different leads cannot be combined. Irrespective of the measured ECG lead, the Tpe interval is not systematically heart rate dependent, and no heart rate correction should be used in clinical Tpe investigations.

scholarly journals HUBUNGAN PENGGUNAAN DIAPERS DENGAN KEMAMPUAN TOILETING PADA ANAK

2018 ◽  
Vol 2 (1) ◽  
pp. 117
Author(s):  
Rendika Baharudin Abror ◽  
Cholik Harun Rosjidi ◽  
Rika Maya Sari
Keyword(s):  
Data Collection ◽  
Toilet Training ◽  
P Value ◽  
Developmental Tasks ◽  
Chi Square ◽  
Cross Sectional ◽  
Large Sample ◽  
Relationship Of ◽  
The Relationship

AbstractEach child has a task that must be passed well, especially at the age of the child (12-36 months). One of the developmental tasks in toddlers is toilet training. Long-term use of diapers can cause toilet effects. This study aims to determine the relationship between diapers with the ability of toileting in children.The design of this research is Correlation with cross sectional approach. Large sample of 70 respondents. Sampling of the study using total sampling, data collection using questionnaires and calculations using Chi-square Correlation test using SPSS 16.0 error α 0.05.The results of the research variables The use of diapers in children interpreted most of the 47 children of respondents (67.1%) Did not use and almost half of the 23 respondents (32.9%) use. The ability of toileting in children is interpreted by most of the 42 respondents (60.0%) fulfilled, and almost half of 28 respondents (40.0%) are not met.Based on the calculation of Chi-square SPSS statistic shows that p value 0,000 <0,05) means that there is relationship of diaper usage with the ability of toileting in children with the closeness of cc relationship of 0.479 enough category.The results of this study concluded that almost half of them use diapers, and almost half of them do not meet the ability of toileting, the researcher suggests in the research place to put a picture or leaflet about the effect of Diaper Usage on Toileting Ability so that the wise mother in using Diapers.Keywords: diapers, toileting, children AbstrakSetiap anak mempunyai tugas perkembangan yang harus dilewati dengan baik, terlebih pada usia toddler (12-36 bulan). Salah satu tugas perkembangan pada anak usia toddler adalah toilet training. Pemakaian diapers dalam jangka panjang dapat menimbulkan efek yang berbahaya serta bisa menghambat kemampuan toilet training anak. Penelitian ini bertujuan untuk mengetahui Hubungan Penggunaan diapers dengan kemampuan toileting pada anakDesain penelitian ini adalah Korelasi dengan pendekatan cross sectional. Besar sampel 70 responden. Sampling penelitian menggunakan Total sampling, pengumpulan data menggunakan kuesioner dan perhitungan menggunakan uji Korelasi Chi-square dengan menggunakan SPSS 16.0 kesalahan α 0,05.Hasil penelitian variabel Penggunaan diapers pada anak diinterpretasikan sebagian besar 47 anak responden (67,1%) Tidak menggunakan dan hampir setengahnya 23 responden (32,9%) menggunakan. Pada kemampuan toileting pada anak diinterpretasikan sebagian besar 42 responden (60,0%) tercapai, dan hampir setengahnya 28 responden (40,0%) belum tercapai.Berdasarkan perhitungan uji statistik Chi-square SPSS menunjukkan p value 0,000< 0,05) artinya ada hubungan penggunaan diapers dengan kemampuan toileting pada anak dengan keeratan hubungan cc sebesar 0,479 kategori cukupHasil penelitian disimpulkan hampir setengahnya menggunakan diapers, dan hampir setengahnya belum tercapai kemampuan toileting maka peneliti menyarankan pada tempat penelitian untuk memasang gambar atau leaflet tentang dampak Penggunaan Diapers Terhadap Kemampuan Toileting, sehingga ibu bijak dalam menggunakan Diapers.Kata kunci: Diapers, Toileting, Anak.

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