1,720,975 research outputs found
INTEGRATED EFFECT OF ORCANLC MANURES AND NITROGEN ON YIELD CONTRIBUTING CHARACTERS AND YIELD 'kc4 OF RICE (BRRI dhan29)
Full text linkA Thesis
Submitted to the Facully ofAgriculture
Sher-e-Bangla Agricultural University. Dhaka
in partial fulfilment of the requirements
for the degree
of
MASTER OF SCIENCE (MS)
IN
SOIL SCIENCE
SEMESTER: JULY-DECEMBER, 2011The experiment
was
conducted in the Farm of Sher-c-Bangla Agricultural
University, Dhaka, Bangladesh during the period from January to April 2010 to
study the integrated effect of organic manures and nitrogen on yield contributing
characters and yield of rice (BRRI dhan29). The experiment consisted of 12
treatments. The treatments were T
1
: Control condition (No chemical fertilizer, no
organic manure); 'l': 100% recommended N (120 kg N ha
4
) + recommended P.
K, S and Zn); 1'
3
: 100 kg N from urea + 20 kg N substituted by vermicompost
(VC) + F, K, S and
Zn;
T4
: 100 kg N from urea + 20 kg N substituted by cowdung
(CD) + P, K, S and Zn; T
5
: 80 kg N from urea + 40 kg N substituted by VC + V.
K, S and Zn; T6
: 80 kg N from urea + 40 kg N substituted by CD + P, K, S and
Zn; T7
: 60 kg N from urea + 60 kg N substituted by VC + P, K, S and Zn; i'
s
: 60
kg N from urea + 60 kg N substituted by CD + P. K, S and Zn; T
9
: 100 kg N from
urea + 20 kg N substituted equally by VC and CD + P, K, S and Zn; T,
0
: 80 kg N
from urea + 40 kg N substituted equally by VC and Cl) + P. K, S and Zn; T
11 : 60
kg N from urea + 60 kg N substituted equally by VC and CD + P. K, S and Zn
and T
17
: 120 kg N substituted equally by VC and CD. Data on different growth
parameter & yield, nutrient content in grain & straw, nutrient uptake by grain &
straw and characteristics of post harvest soil was recorded. At 30,
50,
70, 90 DAT
and harvest, the longest plant (23.96 cm, 31.29 cm., 44.23 cm, 66.84cm and 88.87
cm) was recorded from T
10
and at the same DAT the shortest plant (16.47 cm,
21.60 cm, 30.23 cm, 47.13 cm and 61.95 cm) was observed from T
1
as control
condition. The highest grain yield (6.73 t hi) was recorded from T
10, while the
lowest (2.16 t ha
4
) from T,. The hirest straw yield (7.10 t hi') was obtained
from T
10
and the lowest (4.33 t hi) from T,. The highest N uptake by grain
(43.99 kg hi') was recorded from T
11
and the lowest (16.38 kg hi ) from T,. The
highest P uptake by grain (14.63 kg hi') was observed from T
11
, while the lowest
(6.32 kg hi') from T,. The highest K uptake by grain (19.66 kg hi) was found
from T,,, whereas the lowest (7.72 kg
hi1
) was observed from T,. The highest N
uptake by straw (30.87 kg hi') was recorded from 1'
6
and the lowest (21.85 kg
hi') from T,. The highest P uptake by straw (4.72 kg hi') was found from T
4,
whereas the lowest (3.77 kg hi') from T,. The highest K uptake by straw (73.98
kg
hi')
was recorded from i'6 and the lowest (50.76 kg hi) from T,.
Applications of 80 kg N from urea +40 kg N substituted equally by VC and CD +
P. K, S and Zn was the superior among the other treatments in consideration of
yield contributing characters and yield of BRRI dhan29
A Model-Free Control System Based on the Sliding Mode Control with Automatic Tuning Using as On-Line Parameter Estimation Approach
Full text linkThe sliding mode control algorithm and Lyapunov-based methods, have received much attention recently due to their ability to directly handle nonlinear systems while guaranteeing closed-loop tracking stability. In this work, a unique model-free sliding mode control technique has developed solely based on previous control inputs. The new method requires only knowledge of the system order and state measurements and does not require a theoretical model of the dynamic system. Lyapunov’s stability theorem is used in the controller formulation process to ensure closed-loop asymptotic stability. High frequency chattering of the control effort is reduced by using a smoothing boundary layer into the control law. Parameters variation during control operating and noise effect cannot be handled by the model-free controller if the controller tuning parameters are chosen arbitrarily since tracking performance becomes unacceptable. In addition, in previous work, the bounds of the input influence gain parameters were assumed to be known to derive the model-free controller. Therefore, in this work, a new approach is proposed for estimating the increment to the switching gain in real-time to ensure the sliding condition (which guarantees closed-loop tracking stability) is satisfied using a control law form that assumes a strictly unitary input influence gain. In formulation of estimation law, an exponential forgetting factor is combined with the least-squares estimator to ensure the updated data are used and past data are excluded. An automatic bounded forgetting tuning technique is developed to maintain the benefits of data forgetting while avoiding the possibility of gain unboundedness in absence of persistent excitation. The tuning estimator is assured that the resulting gain matrix is upper bounded regardless of the persistent excitation by suspending the data forgetting if the gain matrix reaches the specified upper bound. Simulations are performed on a series of linear and nonlinear SISO and MIMO systems with and without including actuator time-delay effects. Finally, a model is developed to simulate a quadcopter as a real-world application case. In all cases, the controller achieved perfect or near-perfect tracking performance using updated controller and on-line estimator tuning process
Remuneration and Employee Motivation
Full text linkRemuneration is an influential aspect of employee motivation in the advertising industry. However, the research is not in a similar stream. Therefore, the study investigates how remuneration functions for employee motivation in the Bangladeshi advertising sector. A case study research design was considered in line with interpretivist philosophy, an inductive approach, and a qualitative research strategy. The data was collected through interviews with one manager and one employee, which were analyzed thematically using Microsoft Office.
The findings show that remuneration is mainly identified as a payment system. However, there are other remunerations, such as health insurance and time off. On the contrary, motivation mostly depends on timely salary and fair payment systems. In addition, nonfinancial incentives also provide long-term motivation. Remuneration for motivation includes salaries, bonuses, commissions, recognition, career advancement, financial rewards, incentives, and security. The performance of motivation-based remuneration indicates that employees are inspired to do their best work with fair and on-time payment, bonuses, transparency, and career growth. Conversely, frustration and productivity disruption are noticed due to delays and underpayments. However, a fair and well-designed payment system leads to better performance. This study confirms that employee motivation primarily relies on basic needs according to Maslow's hierarchy of needs theory.
The study suggests that the company must develop a fair, transparent, and well-designed payment system with bonuses, flexible working hours, and career growth to improve employee motivation. The government should also develop legislation for a fair payment system with various non-financial incentives
STRATEGICALLY DETERMINANTS THE IMPACT OF MACROECONOMIC FACTORS ON PHARMACEUTICAL COMPANIES PROFITABILITY IN BANGLADESH
Full text linkThis study has empirically investigated the impact of macroeconomic factors on the performance of the pharmaceutical company’s profitability in Bangladesh. Data have been collected from four pharmaceutical companies in Bangladesh from the year 2000-2018. For analysis of data SPSS 22 has been used, and different statistical tools have used like, Descriptive Statistics, ANOVA, Regression, etc. Macroeconomic factors measured by Gross Domestic Product (GDP), Inflation rate (INF), Interest rate (IR), and Real exchange rate (RER), while company performance is indicated by Return on Asset (ROA). For this study, ROA has been selected as a Dependent variable and Gross Domestic Product (GDP) Inflation rate (INF), Interest rate (INT) and Real exchange rate (RER) selected as independent variables. ‘Multiple Linear Regression’ has been used to examine the degree of the relationship of macroeconomics factors towards the company’s performance. The results conclude that there has a positive relationship between GDP, INF, and RER with ROA but their relations are not statically significant. In the meantime, there is a significant negative correlation between INT and ROA as the p-value is less than the key level. Inflation rate which has been used as the substitute of macroeconomic variable, conversely influence on firm profitability and macroeconomic variable i.e., GDP growth rate has a positive consequence on the firm profitability
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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