VARIATION IN CONE PRODUCTION OF RED PINE IN RELATION TO WEATHER

1967 ◽  
Vol 45 (9) ◽  
pp. 1683-1691 ◽  
Author(s):  
D. T. Lester
Keyword(s):  
Regression Analysis ◽  
Multiple Regression Analysis ◽  
Relative Magnitude ◽  
Red Pine ◽  
Weather Variables ◽  
Cone Production ◽  
Mean Temperature ◽  
Biological Explanation ◽  
Cone Development ◽  
Average Loss

Variation in annual counts of 2-year-old cones was studied in 15-year records from 78 trees scattered over northern Wisconsin. For a 3-year period, 1-year-old cones were also counted and compared with the counts of 2-year-old cones in the following year. In addition to major losses of 2-year-old cones to insects, an average loss of 60% was noted between the 1st and 2nd year of cone development. Counts of 2-year-old cones nevertheless reflected the relative magnitude of the 1-year-old cone crop and thus were presumed to reflect the relative magnitude of the cone crop initiated 24 months before counting.Simple correlations of weather variables with counts of 2-year-old cones were computed for each of the 54 months before counting. Both April mean temperature and July–September mean temperature 2 years before counting were positively associated with variation in cone counts while potential cone crop already present was negatively associated. The use of three variables in multiple regression analysis revealed the predominant influence of July–September temperature and accounted for from 64 to 77% of the variance in counts of 2-year-old cones. Five correlations with less apparent biological explanation also were detected.

Association of western white pine cone crops with weather variables

1976 ◽  
Vol 6 (1) ◽  
pp. 6-12 ◽  
Author(s):  
S. Eis
Keyword(s):  
White Pine ◽  
Weather Variables ◽  
Weather Factors ◽  
Daily Temperature Range ◽  
Cone Production ◽  
Pine Cone ◽  
Western White Pine ◽  
Cone Development ◽  
Sunny Weather ◽  
One Year

Twenty-one-year records of western white pine cone counts were analyzed with seven meteorological variables to find if any combinations of available weather factors were associated with the induction of reproductive buds and successful development of the strobili. The weather in three periods before the physical initiation of the potentially reproductive cycle showed association with cone counts: (1) sunny weather in June, 39 months before cone maturation; (2) warm, sunny, dry weather in September and October, 36 and 35 months before cone maturation; and (3) warm, sunny, dry weather with wide daily temperature range in June and July, 27 and 26 months before cone maturation, appeared to promote differentiation of potentially reproductive buds. During and after the initiation of bud primordia, the weather in four periods appeared to be associated with cone production: (1) warm and possibly wet weather in August, September, and October, 25 to 23 months before cone maturation; (2) rain in the third quarter of July, 4 weeks after pollination and 14 months before cone maturation; (3) warm temperatures in September, October, and November, 12 to 10 months before cone maturation; and (4) sunny, warm, dry weather in May, 4 months before cone maturation, appeared to be beneficial to cone development.

scholarly journals A TREE VOLUME TABLE FOR RED PINE BY CROWN WIDTH AND HEIGHT

1964 ◽  
Vol 40 (3) ◽  
pp. 339-346 ◽  
Author(s):  
G. M. Bonnor
Keyword(s):  
Regression Analysis ◽  
Multiple Regression Analysis ◽  
Multiple Regression ◽  
Tree Height ◽  
Red Pine ◽  
Aerial Photographs ◽  
Diameter At Breast Height ◽  
Breast Height ◽  
Volume Table ◽  
Crown Width

A multiple regression analysis of parameters which can be measured or interpreted on aerial photographs showed that crown width and tree height exhibit a good correlation with diameter at breast height. A tree volume table based on the above relationship was constructed and tested with good results.

Potassium et magnésium: deux éléments limitant la croissance en hauteur du pin rouge au Québec

1975 ◽  
Vol 5 (1) ◽  
pp. 73-79 ◽  
Author(s):  
Truong Dinh Phu
Keyword(s):  
Regression Analysis ◽  
Multiple Regression Analysis ◽  
Multiple Regression ◽  
Nutrient Status ◽  
Site Index ◽  
Red Pine ◽  
Total N ◽  
Exchangeable K ◽  
Foliar Concentrations ◽  
Linear Correlations

Relations between the site index of red pine (Pinusresinosa, Ait.) and foliar concentrations in N, P, K, Mg, Ca, and Mn, the soil content in O.M., total N, available P, exchangeable K, HNO3 extractable K, exchangeable Mg and Ca, and the percentage of silt plus clay of 23 sample plots on fluvio-marine or associated deposits in the St-Lawrence plain were studied. The site index varies between 28 and 42 at 20 years b.h. There are significant and positive linear correlations between the site index and concentrations in K, Mg, and Ca in the needles. The linear correlation for Mn is significant but negative. However, multiple regression analysis indicate that only potassium and magnesium were significantly associated with the regressions.There are significant and positive linear correlations between the site index and the soil content in HNO3 extractable K, exchangeable K and Mg. However, multiple regression analysis indicate that only HNO3 extractable K has a significant contribution to variations of site index and the contribution of exchangeable Mg is almost significant at 0.05. There are also significant and positive linear correlations between the foliar concentrations of potassium and magnesium and the respective soil contents in HNO3 extractable K and exchangeable Mg. Height growth of red pine in St-Lawrence plain is closely related to the nutrient status of potassium and magnesium in the sites under investigation.

Pengaruh Citra Merek, Kualitas Produk Dan Harga Terhadap Kepuasan Konsumen Pada Bisnis Franchise Minuman

2017 ◽  
Vol 24 (2) ◽  
pp. 144-153
Author(s):  
Yunita Fitri Wahyuningtyas
Keyword(s):  
Regression Analysis ◽  
Marketing Strategy ◽  
Product Quality ◽  
Multiple Regression Analysis ◽  
Multiple Regression ◽  
Sampling Method ◽  
Sampling Technique ◽  
Sampling Process ◽  
And Function ◽  
Simultaneous Influence

This research is conducted upon the emergence of many companies producing the same product of the same kind and function. It leads to the urgency of proper and well planned marketing strategy. This research aims to investigate how far the influence of branding, product quality, and price toward consumer’s satisfaction in beverage franchise business. This research utilizes 5 likert scale questionnaire which is tested by using multiple regression analysis to reveal whether or not there is partial and simultaneous influence of branding, product quality, and price toward consumer’s satisfaction in beverage franchise business. Sampling method is accidental sampling technique, in which sample of particular population is taken based on the accessibility and availability of the sample during the sampling process. Sample used is 100 samples among consumers or customers of Mang Endy Milkshake. The result shows that branding, product quality, and price influence consumer’s satisfaction in beverage franchise business.

Pengaruh Kotbah, Musik Gereja Dan Fasilitas Gereja Terhadap Tingkat Kehadiran Jemaat

2016 ◽  
Vol 1 (1) ◽  
pp. 1-15
Author(s):  
Frederich Oscar Lontoh
Keyword(s):  
Regression Analysis ◽  
Multiple Regression Analysis ◽  
Church Music ◽  
Pearson Correlation ◽  
Descriptive Analysis ◽  
Target Population ◽  
The Other ◽  
Pearson Correlation Coefficient ◽  
Christian Church ◽  
The City

This research is titled " The influence of sermon, church music and church facilities on the level of attendance”. The purpose of research is to identify and analyze whether sermon, church music and church facilities have influence on the the level of attendance. The target population in this study is a Christian church members who live in the city of Surabaya.. Sample required is equal to 47 respondents. Through sampling stratified Random techniques.These influence was measured using Pearson correlation coefficient and multiple regression analysis, t-test and analysis of variance. Descriptive  analysis  were taken to analyze the level of attendance according to demographic groups.The hypothesis in this study are the sermon, church music and church facilities have positive and significant on the level of attendance. The results showed that collectively, there are positive and significant correlation among the sermon, church music and church facilities on the level of attendance  96,2%. It means that 96,2 % of level of attendance influenced by sermon, church music and church facilities and the other 28,9% by others. All of the variable partially have significant correlation to level of attendance.

Significance of Experience, Farm Size, Quantity of Propagules and Location f or Seaweed Farmers in the Divided Island of Sebatik

2018 ◽  
Vol 9 (9) ◽  
pp. 825-832
Author(s):  
James M. Alin ◽  
◽  
Datu Razali Datu Eranza ◽  
Arsiah Bahron ◽  
◽  
...  
Keyword(s):  
Regression Analysis ◽  
Multiple Regression Analysis ◽  
Multiple Regression ◽  
Production Function ◽  
Weather Conditions ◽  
Education Level ◽  
Farm Size ◽  
Total Production ◽  
Explanatory Factors ◽  
Douglas Production Function

Seaweed-Kappaphycus-Euchema Cottonii and Denticulum species was first cultivated at Sabah side of Sebatik in 2009. By November 2014, sixty one Sabahan seaweed farmers cultivated 122 ha or 3,050 long lines. Thirty Sabahan seaweed farmers in Kampung Pendekar (3.2 m.t dried) and 31 in Burst Point (12.5 m.t dried) produced 16 metric tonnes of dried seaweed contributed 31% to Tawau’s total production (51 m.t). The remaining 69% were from farmers in Cowie Bay that separates Sebatik from municipality of Tawau. Indonesian in Desa Setabu, Sebatik started in 2008. However, the number of Indonesian seaweed farmers, their cultivated areas and production (as well as quality) in Sebatik increased many times higher and faster than the Sabah side of Sebatik. In 2009 more than 1,401 households in Kabupaten Nunukan (including Sebatik) cultivated over 700 ha and have produced 55,098.95 and 116, 73 m.t dried seaweed in 2010 and 2011 respectively. There is a divergence in productions from farming the sea off the same island under similar weather conditions. Which of the eight explanatory factors were affecting production of seaweeds in Sebatik? Using Cobb Douglas production function, Multiple Regression analysis was conducted on 100 samples (50 Sabahan and 50 Indonesian). Results; Variable significant at α = 0.05% are Experience in farming whereas Farm size; Quantity of propagules and Location — Dummy are the variables significant at α 0.01%. Not significant are variables Fuel; Age; Number of family members involved in farming and Education level.

Adiksi Internet pada Remaja

2019 ◽  
Vol 7 (1) ◽  
pp. 72-78
Author(s):  
Ismalia Prambayu ◽  
Mulia Sari Dewi
Keyword(s):  
Regression Analysis ◽  
Social Skills ◽  
Multiple Regression Analysis ◽  
Multiple Regression ◽  
Parenting Style ◽  
Internet Addiction ◽  
Psychological Factors ◽  
Social Skill ◽  
Analysis Method ◽  
Loneliness Scale

AbstractInternet addiction has become a worrying phenomenon for Indonesian teenagers. This research was conducted to determine whether the psychological factors will influence internet addiction in adolescents. This research uses quantitative with multiple regression analysis method. The winning sample is 200 adolescents. The instrument collects data using a scale internet addiction scale that compiled by Griffiths (2005) and developed by Lemmens (2009), Parenting Authority Questionnaire (PAQ) developed by Buri (1991), Social Skill Inventory (SSI) developed by Riggio (1986), and A Rasch-Type Loneliness Scale compiled by De Jong Gierveld (2006).  The results showed that there were significant differences in the parenting style, social skills, and loneliness on the tendency of internet addiction in adolescents.AbstrakAdiksi Internet menjadi salah satu fenomena yang mengkhawatirkan untuk remaja Indonesia. Penelitian ini dilakukan untuk mengetahui faktor psikologis apakah yang memberikan pengaruh terhadap kecenderungan adiksi internet pada remaja. Sampel pada penelitian ini berjumlah 200 remaja dengan menggunakan metode analisis kuantitatif. Penelitian ini menggunakan alat ukur sebagai berikut, alat ukur adiksi internet yang dikembangkan oleh Lemmens (2009), Parenting Authority Questionnaire (PAQ) yang dikembangkan oleh Buri (1991), Social Skill Inventory (SSI) yang dikembangkan oleh Riggio (1986), dan A Rasch-Type Loneliness Scale yang disusun oleh De Jong Gierveld (2006). Berdasarkan hasil pengujian ditemukan pengaruh signifikan gaya pengasuhan, keterampilan sosial, dan kesepian terhadap kecenderungan adiksi internet pada remaja.

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