Effects of Delayed Mating on the Reproduction of King Crab, Paralithodes camtschatica

1969 ◽  
Vol 26 (10) ◽  
pp. 2737-2740 ◽  
Author(s):  
John C. McMullen
Keyword(s):  
Carapace Length ◽  
Mature Female ◽  
Regression Equation ◽  
Coefficient Of Determination ◽  
King Crab ◽  
Volume Relation ◽  
Paralithodes Camtschatica ◽  
Fertilized Egg

Mature female king crab, Paralithodes camtschatica (Tilesius), molt annually, at which time each is normally attended by a male for mating purposes. This study considered how mating and the production of fertilized eggs might be affected if female king crab were forced to await partners after molting, a situation that has been observed at Kodiak Island.Prior to studying delayed mating, a carapace length–egg clutch volume relation was developed so partial egg clutches that might be produced could be objectively evaluated. The regression equation calculated is Y = −248.55 + 2.69 X, where carapace length was measured in millimeters and clutch volume in milliliters. The coefficient of determination (r2) for this regression equation is.899.The study of delayed mating was conducted with 76 female king crab, which were allowed to mate on one of 2–15 days after molting. All females that mated within 9 days after molting produced fertilized egg clutches. Nine of 24 females allowed to mate 10–13 days following ecdysis, and 10 females mated after 13 days, produced no egg clutches.

Growth Model for Alaska King Crab (Paralithodes camtschatica)

1977 ◽  
Vol 34 (7) ◽  
pp. 989-995 ◽  
Author(s):  
Donald A. McCaughran ◽  
Guy C. Powell
Keyword(s):  
Growth Rate ◽  
Computer Simulation ◽  
Stochastic Model ◽  
Growth Model ◽  
Early Life ◽  
Carapace Length ◽  
Growth Increment ◽  
Stochastic Growth ◽  
King Crab ◽  
Paralithodes Camtschatica

A stochastic growth model is presented to represent the growth in carapace length of the Alaska king crab (Paralithodes camtschatica Tilesius). Two submodels are combined to yield the growth model: (1) growth increment as a function of premolt length and molting history and (2) a probabilistic model of frequency of molting by age, premolt length, and molting history. The results of a computer simulation of the growth model are presented. Frequency of ages at various lengths and frequency of lengths at each age are given. Frequency of molting during early life was found to greatly influence growth rate. Key words: king crab, growth, length, stochastic model growth increment, molting, growth model

PENGARUH SARANA BELAJAR DAN MOTIVASI BELAJAR TERHADAP KEMANDIRIAN BELAJAR MAHASISWA (Studi Empirical Pada Mahasiswa Beasiswa Bidikmisi UPBJJ-UT Ternate)

2018 ◽  
Vol 19 (2) ◽  
pp. 68
Author(s):  
Raden Sudarwo ◽  
Yusuf Yusuf ◽  
Anfas Anfas
Keyword(s):  
Student Learning ◽  
Significant Influence ◽  
Sense Of Self ◽  
Regression Equation ◽  
Learning Motivation ◽  
Coefficient Of Determination ◽  
Learning Tools ◽  
Constant Number ◽  
Self Sufficiency ◽  
Student Independence

This study aims to determine the influence of learning facilities and student learning motivation towards the independence of student learning. The result of the research shows that there is positive and significant influence of learning tool (X1) on learning independence (Y). It is obtained by tvalue (2,159) with p = 0,034 <0,05 and ttable at 5% significant level with df = 78 equal to 1,991. There is a positive and significant influence of learning motivation (X2) on learning independence (Y). It is obtained tvalue (7,858) with p = 0,000 <0,05 and ttable at 5% significant level with df = 78 equal to 1,991. There is a positive and significant influence of learning facilities (X1) and learning motivation (X2) simultaneously to the independence of learning (Y). This shows the coefficient of double correlation RY (1,2) = 0,746 and R² = 0,557 and price Fvalue equal to 48,980 with p = 0,000 <0,05 and Ftable = 3,11 at 5% significant level. Coefficient value X1 = 0,186 and X2 = 0,647, constant number equal to 8,650 so that can be made regression equation Y = 8,650 + 0,186X1 + 0,647X2. The higher the learning means (X1) and the learning motivation (X2), the higher the learning independence (Y). Coefficient of Determination is R² of 0,557. Means 55,7% learning independence is explained by learning tools and learning motivation. Meanwhile, 44,3% is explained by other factors not discussed in this study. The study concludes that partially, learning facilities and student learning motivation has a positive and significant effect on student independence (self-sufficiency) in learning.  In addition, both learning facility and motivation have a positive and significant effect on student learning independence or sense of self-sufficiency. Penelitian ini bertujuan untuk mengetahui pengaruh fasilitas belajar dan motivasi belajar siswa terhadap kemandirian belajar siswa. Hasil penelitian menunjukkan bahwa ada pengaruh yang positif dan signifikan sanara belajar (X1) terhadap kemandirian belajar (Y). Hal ini diperoleh dengan nilai thitung (2,159) dengan p = 0,034 <0,05 dan ttabel pada 5% tingkat signifikan dengan df = 78 sama dengan 1,991. Ada pengaruh positif dan signifikan motivasi belajar (X2) pada kemandirian belajar (Y). Diperoleh nilai thitung (7,858) dengan p = 0,000 <0,05 dan ttabel pada taraf signifikan 5% dengan df = 78 sebesar 1,991. Ada pengaruh yang positif dan signifikan dari fasilitas belajar (X1) dan motivasi belajar (X2) secara bersamaan terhadap kemandirian belajar (Y). Hal ini menunjukkan koefisien korelasi ganda RY (1,2) = 0,746 dan R² = 0,557 dan harga Fhitung sebesar 48,980 dengan p = 0,000 <0,05 dan Ftabel = 3,11 pada taraf signifikan 5%. Nilai koefisien X1 = 0,186 dan X2 = 0,647, bilangan konstan sebesar 8,650 sehingga dapat dibuat persamaan regresi Y = 8,650 + 0,186X1 + 0,647X2. Semakin tinggi nilai sarana belajar (X1) dan motivasi belajar (X2), semakin tinggi kemandirian belajar (Y). Koefisien Determinasi adalah R² 0,557. Berarti 55,7% kemandirian belajar dijelaskan oleh alat belajar dan motivasi belajar. Sementara itu, 44,3% dijelaskan oleh faktor-faktor lain yang tidak dibahas dalam penelitian ini. Penelitian ini menyimpulkan bahwa secara parsial, baik ketersediaan sarana prasaran belajar dan motivasi berpengaruh positif dan signifikan pada kemandirian mahasiswa, dari dari kedua variable tersebut motivasi mempunyai pengaruh lebih besar. Secara simultan ketersediaan sarana prasarana dalam belajar dan pembelajaran, serta motivasi berpengaruh positif terhadap kemandirian belajar.

PENGARUH PERSONAL SELLING TERHADAP PENCAPAIAN TARGET PENJUALAN (STUDI KASUS PT. SETIAWAN SEDJATI)

2021 ◽  
Vol 8 (2) ◽  
Author(s):  
Ranty Octavianita ◽  
Eki Dudi Darmawan
Keyword(s):  
Data Collection ◽  
Correlation Coefficient ◽  
Research Method ◽  
Quantitative Methods ◽  
Personal Selling ◽  
Strong Relationship ◽  
Regression Equation ◽  
T Test ◽  
Coefficient Of Determination ◽  
Sample Data

The existence of instability in the value of sales is an important evaluation that must be carried out by management. The purpose of this study is to determine the effect of Personal Selling on Sales Targets at PT. Setiawan Sedjati. The location of data collection is done at PT. Setiawan Sedjati Bandung. The research method uses quantitative methods. This research is a descriptive correlation with sample data collection using the Slovin formula. A total of 67 respondents were used as samples in this study consisting of employees of the marketing division and customers of PT. Setiawan Sedjati. The existing samples were then processed using SPSS Statistic Software version 26. Based on the processed data, the results of the regression equation Y = 20.478 + 0.182x. Then the correlation coefficient value of 0.747, it can be said that these results have a strong relationship between variables. The value of the coefficient of determination is 55.8%. The calculated value of 9.068 > 2.6512 this result shows a significant increase between variables on the t-test. It can be concluded that H1 accepted and H0 rejected, namely the variable personal selling. The variable personal selling has an influence on sales.

scholarly journals Hubungan antara Pengetahuan dan Pemahaman Siswa tentang Pencemaran Logam Berat dengan Pembentukan Karakter Siswa dalam Menjaga Keberlangsungan Lingkungan Hidup

2017 ◽  
Vol 3 (1) ◽  
pp. 21
Author(s):  
Sunaryo Sunaryo
Keyword(s):  
High School ◽  
Heavy Metal ◽  
Correlation Coefficient ◽  
Junior High School ◽  
Environmental Sustainability ◽  
Random Sampling ◽  
Metal Contamination ◽  
Heavy Metal Contamination ◽  
Regression Equation ◽  
Coefficient Of Determination

Abstract This research is about the understanding of junior high school students about heavy metal pollution in air, water, and land. The research was conducted at Labschools Junior High School, Rawamangun, East Jakarta in 2016 with a sample of 125 students taken from proportional random sampling, using correlational survey method. The results of this study obtained three conclusions. There is a positive and significant relationship between: 1) Knowledge of heavy metal contamination in air, water, and land with the character of student in maintaining environmental sustainability with research result correlation coefficient (ry1) equal to 0,643 and its coefficient of determination (r²y1) is 0,413 with regression equation Ŷ = 53,832 + 2.579X1; 2) The students understanding about heavy metal pollution in air, water, and land with the character of students in environmental sustainability with the result correlation coefficient (ry2) of 0.950 and its coefficient of determination (r²y2) is 0.902 with regression equation Ŷ = 9.390 + 0.952X2; 3) Student's knowledge and understanding about heavy metal contamination in air, water, and land together with student character in maintaining environmental sustainability with result correlation coefficient (ry12) equal to 0,950 and its coefficient of determination (r²y12) is 0,903 with regression equation Ŷ = 8,475 + 0.086X1 + 0.938X2. These indicates a change in the character of students in maintaining significant environmental sustainability. Keywords: student character, knowledge, environmental understanding. Abstrak Telah dilakukan penelitian pemahaman siswa SMP tentang pencemaran logam berat di air, udara dan daratan. Penelitian dilaksanakan di Sekolah Menengah Pertama Labschools, Rawamangun,  Jakarta Timur pada Tahun 2016 dengan sampel 125 orang siswa yang diambil dari multitage proportional random sampling, dengan menggunakan metode survey korelasional. Hasil penelitian ini mempeoleh tiga kesimpulan. Terdapat hubungan positif dan signifikan antara: 1) Pengetahuan tentang pencemaran logam berat di air, udara, dan daratan dengan karakter siswa dalam menjaga keberlanjutan lingkungan hidup dengan koefisien korelasi (ry1) sebesar 0.643 dan koefisien determinasi (r²y1) sebesar 0,413 dengan persamaan regresi Ŷ=53.832+2.579X1; 2) Pemahaman siswa tentang pecemaran logam berat di air, udara dan daratan dengan karakter siswa dalam  keberlanjutan  lingkungan hidup dengan koefisien korelasi (ry2) sebesar 0.950 dan koefisien determinasi (r²y2) sebesar 0,902 dengan persamaan regresi Ŷ=9.390+0.952X2; 3) Pengetahuan  dan pemahaman siswa tentang pencemaran logam berat di air, udara, dan daratan secara bersama-sama dengan karakter siswa dalam menjaga keberlanjutan lingkungan hidup dengan koefisien korelasi (ry12) sebesar 0.950 dan koefisien determinasi (r²y12) sebesar 0,903 dengan persamaan regresi Ŷ=8,475+0,086X1 + 0,938X2. Hal ini menunjukkan adanya perubahan karakter siswa siswa dalam menjaga keberlanjutan lingkungan cukup signifikan. Kata-kata kunci : karakter siswa, pengetahuan, pemahaman lingkungan.

scholarly journals PENGARUH MOTIVASI KERJA DALAM MENINGKATKAN PRODUKTIVITAS KERJA KARYAWAN PADA PT. SARIGUNA PRIMA TIRTA PULAU SARI KECAMATAN BATI-BATI

2018 ◽  
Vol 4 (3) ◽  
Author(s):  
Syarkani Syarkani
Keyword(s):  
Data Analysis ◽  
Work Motivation ◽  
Work Productivity ◽  
Complex Problem ◽  
Regression Equation ◽  
T Test ◽  
Coefficient Of Determination ◽  
Significance Level ◽  
Purposive Sampling ◽  
Simple Regression

Abstract: Employee work motivation in an organization can be considered simple and can also be a complex problem, because basically humans are easy to be motivated by giving what they want. The purpose of this study was to determine and prove the effect of work motivation on employee work productivity at PT. Sariguna Prima Tirta Pulau Sari Bati-Bati District, Tanah Laut Regency. The main data was obtained through questionnaires to respondents as many as 44 people who were determined by purposive sampling, then supported by the results of observations and direct interviews with respondents. Data analysis was carried out with the help of the SPSS program. It was concluded that the results of the Simple Regression Equation in this study were Y = 18.165 + 0.719 X. Based on the results of the t test, it was found that the work motivation variable had a positive and significant effect on work productivity, because at the 5% significance level t counted greater than t table (8.510 > 2 , 02). The coefficient of determination (r2) is 0.633 which means the ability of the work motivation variable (X) can explain the variable work productivity (Y) of 63.3% while the remaining 36.7% is influenced by other variables not examined in this study. Keywords: motivation, productivity, Bati-Bati Subdistrict Abstrak: Motivasi kerja karyawan dalam suatu organisasi dapat dianggap sederhana dan dapat pula menjadi masalah yang komplek, karena pada dasarnya manusia mudah untuk dimotivasi dengan memberikan apa yang menjadi keinginannya. Tujuan penelitian ini adalah untuk mengetahui dan membuktikan pengaruh motivasi kerja terhadap produktivitas kerja karyawan pada PT. Sariguna Prima Tirta Pulau Sari Kecamatan Bati-Bati Kabupaten Tanah Laut. Data utama diperoleh melalui penyebaran angket kepada responden sebanyak 44 orang yang ditetapkan secara purposive sampling, kemudian didukung dengan hasil observasi dan wawancara langsung dengan responden. Analisis data dilakukan dengan bantuan program SPSS. Disimpulkan bahwa hasil Persamaan Regresi Sederhana dalam penelitian ini adalah Y = 18,165 + 0,719 X. Berdasarkan hasil uji t diketahui variabel motivasi kerja berpengaruh positif dan signifikan terhadap poduktivitas kerja, karena pada taraf signifikasi 5% t hitung lebih besar dari t tabel (8,510 > 2,02).  Koefisien determinasi (r2) sebesar 0,633 yang berarti kemampuan variabel motivasi kerja (X) dapat menjelaskan variabel produktivitas kerja  (Y)  sebesar 63,3% sedangkan sisanya 36,7% dipengaruhi oleh variabel lain yang tidak diteliti dalam penelitian ini. Kata kunci : motivasi,  produktivitas, Kecamatan Bati-Bati

scholarly journals PENGARUH SARANA BELAJAR DAN MOTIVASI BELAJAR TERHADAP KEMANDIRIAN BELAJAR MAHASISWA (Studi Empirical Pada Mahasiswa Beasiswa Bidikmisi UPBJJ-UT Ternate)

2018 ◽  
Vol 19 (2) ◽  
pp. 68-83
Author(s):  
Raden Sudarwo ◽  
Yusuf Yusuf ◽  
Anfas Anfas
Keyword(s):  
Student Learning ◽  
Significant Influence ◽  
Sense Of Self ◽  
Regression Equation ◽  
Learning Motivation ◽  
Coefficient Of Determination ◽  
Learning Tools ◽  
Constant Number ◽  
Self Sufficiency ◽  
Student Independence

This study aims to determine the influence of learning facilities and student learning motivation towards the independence of student learning. The result of the research shows that there is positive and significant influence of learning tool (X1) on learning independence (Y). It is obtained by tvalue (2,159) with p = 0,034 <0,05 and ttable at 5% significant level with df = 78 equal to 1,991. There is a positive and significant influence of learning motivation (X2) on learning independence (Y). It is obtained tvalue (7,858) with p = 0,000 <0,05 and ttable at 5% significant level with df = 78 equal to 1,991. There is a positive and significant influence of learning facilities (X1) and learning motivation (X2) simultaneously to the independence of learning (Y). This shows the coefficient of double correlation RY (1,2) = 0,746 and R² = 0,557 and price Fvalue equal to 48,980 with p = 0,000 <0,05 and Ftable = 3,11 at 5% significant level. Coefficient value X1 = 0,186 and X2 = 0,647, constant number equal to 8,650 so that can be made regression equation Y = 8,650 + 0,186X1 + 0,647X2. The higher the learning means (X1) and the learning motivation (X2), the higher the learning independence (Y). Coefficient of Determination is R² of 0,557. Means 55,7% learning independence is explained by learning tools and learning motivation. Meanwhile, 44,3% is explained by other factors not discussed in this study. The study concludes that partially, learning facilities and student learning motivation has a positive and significant effect on student independence (self-sufficiency) in learning.  In addition, both learning facility and motivation have a positive and significant effect on student learning independence or sense of self-sufficiency.   Penelitian ini bertujuan untuk mengetahui pengaruh fasilitas belajar dan motivasi belajar siswa terhadap kemandirian belajar siswa. Hasil penelitian menunjukkan bahwa ada pengaruh yang positif dan signifikan sanara belajar (X1) terhadap kemandirian belajar (Y). Hal ini diperoleh dengan nilai thitung (2,159) dengan p = 0,034 <0,05 dan ttabel pada 5% tingkat signifikan dengan df = 78 sama dengan 1,991. Ada pengaruh positif dan signifikan motivasi belajar (X2) pada kemandirian belajar (Y). Diperoleh nilai thitung (7,858) dengan p = 0,000 <0,05 dan ttabel pada taraf signifikan 5% dengan df = 78 sebesar 1,991. Ada pengaruh yang positif dan signifikan dari fasilitas belajar (X1) dan motivasi belajar (X2) secara bersamaan terhadap kemandirian belajar (Y). Hal ini menunjukkan koefisien korelasi ganda RY (1,2) = 0,746 dan R² = 0,557 dan harga Fhitung sebesar 48,980 dengan p = 0,000 <0,05 dan Ftabel = 3,11 pada taraf signifikan 5%. Nilai koefisien X1 = 0,186 dan X2 = 0,647, bilangan konstan sebesar 8,650 sehingga dapat dibuat persamaan regresi Y = 8,650 + 0,186X1 + 0,647X2. Semakin tinggi nilai sarana belajar (X1) dan motivasi belajar (X2), semakin tinggi kemandirian belajar (Y). Koefisien Determinasi adalah R² 0,557. Berarti 55,7% kemandirian belajar dijelaskan oleh alat belajar dan motivasi belajar. Sementara itu, 44,3% dijelaskan oleh faktor-faktor lain yang tidak dibahas dalam penelitian ini. Penelitian ini menyimpulkan bahwa secara parsial, baik ketersediaan sarana prasaran belajar dan motivasi berpengaruh positif dan signifikan pada kemandirian mahasiswa, dari dari kedua variable tersebut motivasi mempunyai pengaruh lebih besar. Secara simultan ketersediaan sarana prasarana dalam belajar dan pembelajaran, serta motivasi berpengaruh positif terhadap kemandirian belajar.

scholarly journals THE SEQUENTIAL EVPLANATORY ANALYSIS OF WORK QUALITY BASED ON PRINCIPAL SUPERVISION, WORK DISCIPLINE, AND PEDAGOGICAL COMPETENCE (STUDIY AT JUNIOR HIGH SCHOOL TEACHERS IN THE CITY JAMBI)

2020 ◽  
Vol 7 (12) ◽  
pp. 337-348
Author(s):  
Sumirah
Keyword(s):  
High School ◽  
Junior High School ◽  
Quantitative Methods ◽  
Junior High ◽  
Regression Equation ◽  
Coefficient Of Determination ◽  
Work Quality ◽  
Pedagogical Competence ◽  
Quality Coefficient ◽  
Principal Supervision

The objectives of this research is to examine the correlation between independent variables such as: principal supervision, work discipline, and pedagogical competence with an dependent variable, Work Quality. The research was conducted on 284 Teacher’s Junior high school who were selected by propotional random sampling in Jambi City; meanwhile the hypothesis test was conducted on 0.05 significance level. This research was conducted by using sequential explanatory mixed methods that prioritize research with quantitative methods and followed by qualitative methods to obtain the results of a significant and comprehensive. The quantitative research concludes that: (1) there is a positive and significant correlation (r = 0.4621, p <0.01) between principal supervision with the work quality, coefficient of determination 0.2127 (r2 = 21.27%) with the regression equation Y = 83.539 + 0,450X1, (2) there is a positive and significant correlation (r = 0.4834, p <0.01) between work discipline with the work quality, coefficient of determination 0.2337 (r2 = 23.37% ) with the regression equation Y = 91.901 + 0,427X2, (3) there is a positive and significant correlation (r = 0.5082, p <0.01), coefficient of determination 0.2583 (r2 = 25.83%) between pedagogical competence with the work quality with the regression equation Y = 91.901 + 0,427X3, (4) there is a positive and significant correlation (r = 0.5815, p <0.01) between principal supervision and discipline of work together with the work quality, coefficient determination 0.3381 (r2 = 33.81%) with a regression equation y = 43.63 + 0,403X1 + 0,388X2, (5) there is a positive and significant correlation (r = 0.5762, p <0.01) between principal supervision and pedagogical competence together with the work quality, coefficient of determination 0.3320 (r2 = 33.20%) with a regression equation y = 48.18 + 0,333X1 + 1,646X3, (6) there is a positive and significant relationship ( r = 0.6188, p <0.01) between discipline of work and pedagogical competence together with the work quality, coefficient of determination 0.3829 (r2 = 38.29%) with a regression equation y = 32.95 + 0.413 X2 + 1,953X3, (7) there is a positive and significant correlation (r = 0.7171, p <0.01) between principal supervision, discipline of work and pedagogical competence with the work quality, determination coefficient 0.5143 (r2 = 51.43%) with a regression equation Y = 7.373 + 0,286X1 + 0,388X2 + 1,643X3.

scholarly journals The Contribution of Geography Learning to Disaster Preparedness of Students in Public Senior High Schools in Kendari

2021 ◽  
Vol 21 (2) ◽  
pp. 188-196
Author(s):  
Ismail Akbar ◽  
Enok Maryani ◽  
Epon Ningrum
Keyword(s):  
High School ◽  
High Schools ◽  
Disaster Preparedness ◽  
Senior High School ◽  
Regression Equation ◽  
Quantitative Approach ◽  
Coefficient Of Determination ◽  
Positive Correlation

This research aims to see how to learn geography, how students' disaster preparedness are, and how the contribution of geography learning to disaster preparedness of students in Public Senior High School in Kendari. By using quantitative approach, the data were collected through observation and questionnaires in 5 schools in Kendari which were distributed to 150 students and 10 teachers. The results of students' learning geography with several indicators are presented as follows; with learning variable, 12.5% is categorized as low, 46.5% moderate, 41% high; with preparedness variable, 25.5% is categorized as low, 49.5% medium, 25% high. There is a contribution of geography learning to disaster preparedness with the coefficient of determination R square (R2) of 39.4% while 60.6% is from other factors. Then, the influence of X on Y can be written in the form of a regression equation, namely (Y = 55.998 + 0.159 X). Based on the regression equation, it can be denied that geography learning has a positive correlation with disaster preparedness of students in Public Senior High School in Kendari

scholarly journals Relationship between Cognitive Style and Habits of Mind

2019 ◽  
Vol 2 (1) ◽  
pp. 23
Author(s):  
Hayatun Nufus ◽  
Rezi Ariawan
Keyword(s):  
Linear Regression ◽  
Cognitive Style ◽  
Significance Test ◽  
Regression Equation ◽  
Coefficient Of Determination ◽  
Habits Of Mind ◽  
Linear Regression Equation ◽  
Research Subjects ◽  
Analysis Technique ◽  
The Relationship

This research is a correlational study that examines the relationship between cognitive style and habits of mind. The research subjects involved 4th semester students in the Department of Mathematics Education at the Faculty of Tarbiyah and Teacher Training of UIN Suska Riau which consisted of students with heterogeneous academic abilities. Cognitive style data was collected using the GEFT question instrument with test techniques. Habits of mind data were collected using a questionnaire instrument with a questionnaire distribution technique. The data analysis technique begins with the Pearson Product Moment correlation test which is continued with the significance test and the calculation of the magnitude of the relationship that occurs using the coefficient of determination. Because the data is positively correlated, it continues with determining the linear regression equation. The results showed that there was a significant weak correlation between cognitive style and habits of mind with a relationship score of 6% and a linear regression equation y '= 36.35 + 0.31 x.

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