scholarly journals Development and performance evaluation of a livestock feed chopper/pulverizer

2021 ◽  
Vol 25 (9) ◽  
pp. 1631-1636
Author(s):  
T.A. Ishola ◽  
SB Hassan
Keyword(s):  
Moisture Content ◽  
Crop Residues ◽  
Throughput Capacity ◽  
Feed Production ◽  
Livestock Feed ◽  
Moisture Content Level ◽  
Dependent Variables ◽  
Independent Variable ◽  
And Performance ◽  
The Cost

Crop residues are bulky and low in nutrients. Their size reduction is imperative in order to compound them with other feed ingredients to achieve balanced feedstock for livestock. A chopping and pulverizing machine was designed and constructed to chop and pulverized feed materials. It comprises of chopping hopper, pulverizing hopper, metering device, chopping/ pulverizing chamber, screen and the processed feed outlet. The performance of the machine was evaluated on the basis of throughput capacity, pulverizing efficiency, scatter losses as dependent variables while moisture content was the independent variable. There were two level of speeds (1500 rpm and 2100 rpm) and five levels of moisture content (13 %, 16 %, 19 %, 21 %, 24 %, and 27 % dry basis). The throughput capacity, pulverizing efficiency had highest values of 222 kg/h and of 92.5 % respectively at moisture content level of 13 % (db) and 2100 rpm speed. However, the least scatter losses obtained was 2.5 % at moisture content level of 27 % (db) and 1500 rpm speed. As the moisture content increased, throughput capacity, pulverizing efficiency and scatter losses decreases at both speeds. The developed machine could enhance the use of crop residues in feeding livestock which could ultimately reduce the cost of livestock feed production.

An Investigation of the Effect of Latency on the Operator’s Trust and Performance for Manual Multi-robot Teleoperated Tasks

2017 ◽  
Vol 61 (1) ◽  
pp. 390-394 ◽  
Author(s):  
Hunter Rogers ◽  
Amro Khasawneh ◽  
Jeffery Bertrand ◽  
Kapil Chalil Madathil
Keyword(s):  
Confidence Level ◽  
Search And Rescue ◽  
The Other ◽  
Repeated Measure ◽  
Independent Variables ◽  
Subjective Workload ◽  
Dependent Variables ◽  
Independent Variable ◽  
And Performance ◽  
Two Independent Variables

Latency is an important factor when conducting teleoperated missions. This study investigates the effects of latency on a set of dependent variables: performance (measured by time and number of errors), subjective workload, trust, and usability. These measures were tested in a simulated search-and-rescue mission over two levels of two independent variables. One independent variable was the number of robots – one or two (within-subject), and the other independent variable was latency – simulations with and without latency (between-subject.) The significant effect of the independent variables on the dependent variables were checked using repeated measure two-way ANOVA with a confidence level of 95%. The data determined any significant effects that latency and/or the number of robots had on such factors as errors, dependability, reliability, harmful outcomes, temporal demand, and frustration.

scholarly journals Development and performance evaluation of a solar tunnel date dryer in Oman

2012 ◽  
Vol 17 ◽  
pp. 21
Author(s):  
Mohammad Ali Basunia ◽  
Hamid H. Al-Handali ◽  
Mohammed Issa Al-Belushi ◽  
Mohammad Shafiur Rahman ◽  
Osman Maghoub
Keyword(s):  
Moisture Content ◽  
Initial Moisture Content ◽  
Average Moisture Content ◽  
Air Velocity ◽  
Sun Drying ◽  
Tunnel Dryer ◽  
Moisture Content Level ◽  
Collector Region ◽  
And Performance

Taking into consideration the date harvesting and landholding capacities of the marginalized rural farmers in Oman, a 12 meter long and 2 meter wide tunnel was designed and constructed to dry about 180-200 kg of freshly harvested dates per batch. Half of the tunnel base was used as a flat plate air heating solar collector and the other half as a dryer. The drying air was forced from the collector region (South side) to the drying region (North side) of the half circled tunnel where the product is to be dried. The drying temperature could be easily raised by some 5-30 oC above the ambient temperature inside the tunnel at an air velocity of approximately 0.5 m/sec. The test was conducted with 190.2 kg freshly harvested dates with initial moisture content of 32.8% (wet-basis) to analyze the performance of the dryer. The dates were dried to a final average moisture content of 18.6% (wet-basis) within two days (20 hours). The results indicated that the drying was faster in a solar tunnel dryer than the natural open air sun drying. It was possible to reach the moisture content level for safe storage within less than two days (20 hrs) with a solar tunnel dryer and 5-7 days in open air natural sun drying. The improvement in the quality of dates in terms of color and brightness was distinctly recognized. 

scholarly journals Characterization of Sugar Industry Waste (Filter Cake) and Agro-waste Crop Residue as Potential Source of Livestock Feed Raw Materials

2020 ◽  
Author(s):  
Adugna Ayu Abera ◽  
Ramesh D Duraisamy ◽  
Tolera Badessa Seda
Keyword(s):  
Moisture Content ◽  
Dry Matter ◽  
Filter Cake ◽  
Crop Residues ◽  
Sugar Industry ◽  
Proximate Analysis ◽  
Barley Straw ◽  
Mineral Matter ◽  
Livestock Feed

Abstract The potential searching on sources of livestock feed material is the major constrain in the sustainability of livestock sector for the future. The utilization of cereal crop residues (CCRs) is limited because they contain a large proportion of lignocellulosic compounds and little nitrogen. The filter cake is a poorly studied potential as forage for ruminants. In addition, they show higher fiber content. The analysis on characterization of filter cake, Teff straw, barley straw and corn cob were carried out through proximate analysis such as moisture content (MC), dry mater (DM), organic dry matter (ODM), ash content (AC), crude protein (CP), crude fiber (CF), Elemental analyzer, UV-Visible spectroscopy and Fourier transform infrared spectroscopy were used for analyzing the elemental profiles and functional feed constitutions. The proximate analysis of raw material feed stocks (in %) contains in the range of DM (96. 54 ± 0.7-89.5±0.5), ODM (98.33±0.3-79.4±0.4), MC (3.45±0.7-10.5±0.5), CP (2.32±0.58-12.92±0.36), CF (15.5±0.50-85±0.5), AC (1.69±0.03-20.6±0), FT (1.44±0.1-10.5±0.82), Carbohydrates (45.27- 90.42), energy value (327.26- 386.56 kcal.) and Sucrose of (3.85±0.83). And its elemental compositions can be addressed by their mineral matter contain up 1.69±0.03-20.6±0 %.The moisture content and dry matter contents may vary depends on factors such as cultivator of crops and cane, location, climate, dry length, soil pest diseases, cultivation practices, the harvesting practice and the processing of cans and crops. Large quantities of fibrous crop residues are already used as animal feed in many areas across these countries. There are too many areas in developing countries where ruminant livestock starves due to lack of feed. So this study shows that the direction of searching and compensating the availability of such important croup residues and the sugar industry by product (filter cake) as the raw sources of livestock feeds.

Do Finite Duration Provisions Reduce International Bargaining Delay?

2014 ◽  
Vol 69 (1) ◽  
pp. 219-239 ◽  
Author(s):  
David H. Bearce ◽  
Cody D. Eldredge ◽  
Brandy J. Jolliff
Keyword(s):  
Rational Design ◽  
International Institutions ◽  
Empirical Support ◽  
Policy Implications ◽  
Short Term ◽  
Finite Duration ◽  
Dependent Variables ◽  
Statistical Support ◽  
Independent Variable ◽  
The Cost

AbstractThis research note hypothesizes that international agreements including a finite duration provision or with a shorter expected duration should take less time to negotiate. Using a random sample of agreements across different issue areas, it finds statistical support for this hypothesis. Agreements without a finite duration provision experienced a bargaining phase that was twice as long as agreements including a finite duration provision and otherwise short-term agreements. This result not only offers empirical support for the theoretical proposition that a longer shadow of the future leads to increased bargaining delay—it also has important policy implications. International negotiators can include a finite duration provision when they prefer a shorter bargaining phase to a potentially more durable agreement, and they can avoid this feature when they prefer a more durable agreement, although this decision comes with the cost of additional bargaining delay. By treating finite duration provisions as an independent variable, this result also addresses a critique of the research program on the rational design of international institutions that it moves backward by considering only design features as dependent variables.

scholarly journals Development and performance of a motorized cowpea threshing machine for small scale farmers in Nigeria

2020 ◽  
Vol 5 (1) ◽  
pp. 001-007
Author(s):  
Fawohunre Ademola Jerome ◽  
Olajide Omotayo Gabriel
Keyword(s):  
Developing Countries ◽  
Moisture Content ◽  
Throughput Capacity ◽  
Small Scale ◽  
Cleaning Efficiency ◽  
Grain Damage ◽  
Fan Speed ◽  
And Performance ◽  
Small Scale Farmers

A motorized cowpea threshing machine was developed and evaluated to meet the need of small – scale farmers in the developing countries especially Nigeria. A power rating of 0.75 kW, fan speed of 826 rpm, beater speed of 418 rpm were used for the design. The driver and driven pulleys of 59 mm and 198 mm were used respectively. Two varieties of cowpea were used to evaluate the performance of the machine. The evaluation results showed that average threshing efficiency, cleaning efficiency, percentage of grain damage and throughput capacity were determined to be 83.6, 71.1, 4.4%, and 74.5 kg/hr respectively for Ife brown variety and 84.9, 68.5, 4.7%, and 73.0 kg/hr respectively for IAR 48 variety. The investigation was conducted at three levels of moisture content of 13.5, 14.5 and 15.5% wet basis. Based on the performance of the machine, effective threshing of different varieties of cowpea with minimum grain loss, improved threshing capacity cleaning and efficiency were achieved and yet good quality products was achieved.

scholarly journals Regional Mobile Telecommunications Performance

2021 ◽  
Vol 9 (3) ◽  
pp. 170-185
Author(s):  
Mark A Gregory
Keyword(s):  
Performance Standards ◽  
Throughput Capacity ◽  
Performance Information ◽  
Mobile Telecommunications ◽  
And Performance ◽  
Two Parameters ◽  
The Cost ◽  
Minimum Performance ◽  
Essential Service

Mobile Telecommunications is an essential service that fundamentally affects quality of life by improving communication, the ability of business and industry to improve productivity and for the nation to compete successfully in the global digital economy. There are three fundamental and measurable parameters that, when combined, provide the basis upon which judgements about mobile telecommunications can be made. The parameters are cost, access and performance. Information is readily available about the first two parameters. Quantifiable information is not available about performance. Regional mobile telecommunications is further complicated by factors including population density, the cost of transit or backhaul and infrastructure subsidies. This paper provides a discussion on regional mobile telecommunications performance and focuses on throughput (capacity). The paper recommends that regional mobile telecommunications performance data be collected and that minimum performance standards for regional mobile telecommunications be legislated.

scholarly journals Statistical Modeling for the Characteristics of Open Graded Friction Course Asphalt

2019 ◽  
Vol 27 (1) ◽  
pp. 366-381
Author(s):  
Ola Abbas Al-Jawad ◽  
Shakir Al-Busaltan
Keyword(s):  
Statistical Modeling ◽  
Mix Design ◽  
Independent Variables ◽  
Water Sensitivity ◽  
Dependent Variables ◽  
Open Graded Friction Course ◽  
Mechanical Durability ◽  
Indirect Tensile ◽  
Independent Variable ◽  
And Performance

An open-graded friction course (OGFC) is a special type surface layer of traditional Dense Graded Hot Mix Asphalts (DGHMA) pavement that is increasingly being used around the world due to its various benefits, such as, frictional, safety and environmental, etc. In this research, selective laboratory OGFC properties were statistically modeled depends on mix design inputs for two purposes or aims; mix inputs significant and prediction the OGFC properties according mix inputs.  Principally, Indirect Tensile Strength (ITS), water sensitivity (TSR), and permeability (K) were selected from mechanical, durability, and volumetric properties, respectively as an output property; they represent the dependent variables for each model. While, fillers as conventional mineral filler or Ordinary Portland Cement (CMF, or OPC), binder content (BC), and polymer content (SBS) are represented inputs or the independent variables for all models. The generated models offered a vital achievable tool for prediction (e.g., their R² are 0.781, 0.82 1and 0.820, respectively, for the mentioned model’s properties), also it helped to scale the significant of each independent variable (e.g., filler type significantly affect water sensitivity properties, its correlation was 0.752). This study reveals that the statistical modeling is achievable and offers a dynamic tool to describe the characteristics and performance of OGFC mixture in term volumetric, mechanical and durability properties.

PENGARUH GAYA KEPEMIMPINAN, MOTIVASI KERJA DAN DISIPLIN KERJA TERHADAP KINERJA PEGAWAI DINAS PEKERJAAN UMUM DAN PENATAAN RUANG KOTA PADANG

2020 ◽  
Author(s):  
Lidya Agusti
Keyword(s):  
Leadership Style ◽  
Spatial Planning ◽  
Work Motivation ◽  
Employee Performance ◽  
Descriptive Analysis ◽  
Public Works ◽  
Cronbach’S Alpha ◽  
Cronbach's Alpha ◽  
Independent Variable ◽  
And Performance

The purpose of this study are: 1. To explain the presence or absence of influence of leadership style, work motivation and work discipline on the performance of employees Public Works Department and Spatial Planning Padang City. 2. Measuring the magnitude of the influence of leadership style, organizational culture and organizational commitment to the performance of employees of Public Works and Spatial Planning Padang City. This research was conducted in August 2017 at Public Works Department and Spatial Planning of Padang City The samples used in this study were 83 respondents. The independent variable in this research is Leadership Style (X1), Work Motivation (X2) and Work Discipline (X3). The dependent variable is Employee Performance (Y) Data collection techniques are questionnaires. Data analysis techniques using Descriptive Analysis and Inferential Analysis. To know the influence of independent variable to dependent variable partially, used t test. While to know the influence of independent variable to dependent variable simultaneously, used F test. The assumption used in validity test is if R-count> R-table item declared valid. The R-arithmetic shown in the table above, from each item indicates that R-arithmetic> R-table so the item is declared valid. Leadership Style (X1), Work Motivation (X2), Work Discipline (X3) and Performance (Y) Valid. All of the research variables had Cronbach's alpha values above 0.70 and thus expressed reliably or reliably. The value of Cronbach's alpha variable Leadership Style (X1) is 0.857, Job Motivation (X2) is 0.813, Job Discipline (X3) is 0.736, and the performance variable (Y) is 0.844. In the hypothesis testing of the study found the result that the significance value of leadership style variable (X1) is with the value (sign β = 0,049, p <0,05), Work Motivation variable (X2) with value (sign β = 0.001 p <0.05) , and Work Discipline variable (Y) with value (sign β = 0,041 p <0,05). With the finding of sign β above mentioned, it is stated that Leadership Style (X1), Work Motivation (X2) and Work Discipline (X3) have a significant effect on performance (Y) of Public Works and Spatial Planning Official of Padang City. The magnitude of the influence of the three variables on the performance of employees of Public Works Department and Spatial Planning Padang City is 27.8% (R2 = 0.278).

Return on Invesment (ROI) of Software Product: A Systematic Literature Review

2015 ◽  
Vol 6 (1) ◽  
pp. 50-57
Author(s):  
Rizqa Raaiqa Bintana ◽  
Putri Aisyiyah Rakhma Devi ◽  
Umi Laili Yuhana
Keyword(s):  
Return On Investment ◽  
Assessment Criteria ◽  
Software Product ◽  
And Performance ◽  
Rational Consideration ◽  
Actual Return ◽  
The Cost ◽  
Investment Models ◽  
The Impact

The quality of the software can be measured by its return on investment. Factors which may affect the return on investment (ROI) is the tangible factors (such as the cost) dan intangible factors (such as the impact of software to the users or stakeholder). The factor of the software itself are assessed through reviewing, testing, process audit, and performance of software. This paper discusses the consideration of return on investment (ROI) assessment criteria derived from the software and its users. These criteria indicate that the approach may support a rational consideration of all relevant criteria when evaluating software, and shows examples of actual return on investment models. Conducted an analysis of the assessment criteria that affect the return on investment if these criteria have a disproportionate effort that resulted in a return on investment of a software decreased. Index Terms - Assessment criteria, Quality assurance, Return on Investment, Software product

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