A High Efficiency General Purpose On-Line Silícon Polarimeter System

1976 ◽  
pp. 889-890 ◽  
Author(s):  
M. Irshad ◽  
S. Sen ◽  
R. Pigeon ◽  
R. J. Slobodrian
Keyword(s):  
High Efficiency ◽  
General Purpose ◽  
On Line

scholarly journals Design and Experimental Study of the General Mechanical Pneumatic Combined Seed Metering Device

2021 ◽  
Vol 11 (16) ◽  
pp. 7223
Author(s):  
Dengyu Xiong ◽  
Mingliang Wu ◽  
Wei Xie ◽  
Rong Liu ◽  
Haifeng Luo
Keyword(s):  
High Efficiency ◽  
Cone Angle ◽  
General Purpose ◽  
Optimal Performance ◽  
Air Velocity ◽  
General Properties ◽  
Response Surface Optimization ◽  
Damage Rate ◽  
Air Blowing ◽  
Seed Metering Device

To address the problems of high damage rate, low seeding accuracy, and poor seeding generally in the seeding process, a general-purpose seeding device was designed in this study based on the principle of mechanical pneumatic combined seeding. The air-blowing-type cleaning and seed unloading of the device laid the conditions for precise seeding and flexible seeding. In addition, single-factor experiments were performed on seeds (e.g., soybeans, corn, and rape-seeds) with different particle sizes and shapes to verify the general properties of the seed metering device. A multi-factor response surface optimization experiment was performed by applying soybean seeds as the test object to achieve the optimal performance parameters of the seed metering device. At a seed-clearing air velocity of 16.7 m/s, a seed feeding drum speed of 13.7 r/min, and a hole cone angle of 35.6°, corresponding to the optimal performance index, the qualified index, the replay index, and the missed index reached 97.94%, 0.03%, and 2.03%, respectively. The verification test results are consistent with the optimized ones. As indicated from the results, the seed metering device exhibits good general properties, low damage rate, great precision, and high efficiency; it is capable of meeting general seeding operations of different crop seeds and technically supporting for the reliability and versatility of the seeder.

WWW.TELD.NET: Online Courseware Engine for Teaching by Examples and Learning by Doing

2001 ◽  
Vol 29 (3) ◽  
pp. 219-235 ◽  
Author(s):  
G. Q. Huang ◽  
B. Shen ◽  
K. L. Mak
Keyword(s):  
Teaching And Learning ◽  
Virtual Classroom ◽  
Learning By Doing ◽  
General Purpose ◽  
Project Based Learning ◽  
Course Materials ◽  
Summative Assessments ◽  
On Line ◽  
Set Up ◽  
Electronic Delivery

TELD stands for “Teaching by Examples and Learning by Doing.” It is an on-line courseware engine over the World Wide Web. There are four folds of meanings in TELD. First, TELD represents a teaching and learning method that unifies a number of contemporary methods such as Problem-Based Learning (PBL) in medical education, Project-Based Learning (PBL) in engineering education, and Case Method (CM) in business education. Second, TELD serves as a Web server for hosting teaching and learning materials especially based on the TELD method. A variety of on-line facilities are provided for editing and uploading course materials such as syllabus, schedule, curriculum, examples of case study, exercises of mini-project, formative and summative assessments, etc. Third, TELD is a courseware search engine where educators are able to register their course materials and search for materials suitable for a particular course. In contrast with general-purpose search engines, TELD is set up for the special purpose of education. Therefore, the time and efforts spent on surfing are expected to be reduced dramatically. Finally, TELD is an on-line virtual classroom for electronic delivery of electronic curriculum materials. In addition to providing the lecture notes, TELD not only provides discussion questions for conducting in-class discussions and homework as formative assessment but also provides facilities for students to plan and submit their group work. This article presents an overview of the TELD courseware engine together with its background and underlying philosophy.

High-Efficiency On-Line Solid-Phase Extraction Coupling to 15−150-μm-i.d. Column Liquid Chromatography for Proteomic Analysis

2003 ◽  
Vol 75 (14) ◽  
pp. 3596-3605 ◽  
Author(s):  
Yufeng Shen ◽  
Ronald J. Moore ◽  
Rui Zhao ◽  
Josip Blonder ◽  
Deanna L. Auberry ◽  
...  
Keyword(s):  
Column Liquid Chromatography ◽  
Liquid Chromatography ◽  
Solid Phase Extraction ◽  
Proteomic Analysis ◽  
High Efficiency ◽  
Solid Phase ◽  
Phase Extraction ◽  
On Line

scholarly journals Counseling over Time as a Correlate of Non-Urgent Undergraduate Institutional Commitment

2017 ◽  
Vol 7 (2) ◽  
pp. 96
Author(s):  
Gary Blau ◽  
John DiMino ◽  
Iris Abreu ◽  
Kayla LeLeux-LaBarge
Keyword(s):  
Mental Health ◽  
General Purpose ◽  
Institutional Commitment ◽  
University Counseling Center ◽  
University Counseling ◽  
Health Concerns ◽  
On Line ◽  
Mental Health Concerns ◽  
The Right ◽  
Over Time

The general purpose of this study was to examine counseling services as a correlate of institutional commitment and related variables over time on a sample of non-urgent undergraduates. Data for non-urgent clients at a University Counseling Center (UCC) were collected using on-line surveys over four time-periods. Within-time correlations generally showed that mental health concerns was negatively related to institutional commitment, while counseling help belief was positively related. Institutional commitment is defined as a student feeling that he or she selected the right institution to attend Using a smaller sample, i.e., n = 15, of complete-data clients matched-over-time, overall level of mental health concerns significantly declined, while institutional commitment significantly increased. Counseling help belief decreased from Time 1 to Time 2 but then increased over time. Scientifically demonstrating to higher-level University administration that counseling over time can positively influence undergraduates’ institutional commitment can help the UCC to increase its allocation of university-based resources to keep pace with non-urgent client demands.

scholarly journals General-Purpose Forest Plough

2017 ◽  
Vol 7 (3) ◽  
pp. 193-200
Author(s):  
Иван Бартенев ◽  
Ivan Bartenev ◽  
Михаил Лысыч ◽  
Mikhail Lysych ◽  
Михаил Шабанов ◽  
...  
Keyword(s):  
High Efficiency ◽  
General Purpose ◽  
Soil Conditions ◽  
High Survival ◽  
Modular Construction ◽  
Soil Preparation ◽  
Waterlogged Soils ◽  
Low Efficiency ◽  
Single Instrument ◽  
Specific Amount

The basic soil preparation is an important factor in ensuring high survival rate and preservation of cultural plants. Its objective is to loosen the soil to a predetermined depth, it is also important to ensure the containment of weeds growth in areas, adjacent to the row of crop strips. Depending on soil conditions it may be cutting of one or double earthboard furrows (drained soil) and in the formation of microhill (temporarily waterlogged soils). For these purposes, currently, ploughs PKL-70, PRL-70, PL-1, PLM-1.5A, PDV-1.5, PL-2-50, PLD-1.2, etc. are used. Their common drawback is the ability to perform only one operation. A large variety of used tillage equipment and its low efficiency confirms the urgency of developing multi-tools modular construction. This will effectively produce basic preparation of the soil in a variety of conditions with a single instrument. The article provides a description of design and basic layout options of multifunctional plough. By simple changeovers, carried out on site, the plough can be adapted for the main preparation of soil on clearings with drained and temporarily waterlogged soils. It is also possible to change the distance between the bodies of the plow in accordance with the specified rows and rearrange them to work "in" or "out". Process works is modeled in conditions of non-uprooted cutting. The simulation experiment showed high efficiency of the plough, which is ensured by the presence of safety recoverable devices. Replacement in the forestry enterprise of a set of ploughs with one multipurpose plough will reduce total specific amount of metal almost in 4 times.

Rack Server Solution in Data Center

2015 ◽  
Author(s):  
Sheng Kang ◽  
Guofeng Chen ◽  
Chun Wang ◽  
Ruiquan Ding ◽  
Jiajun Zhang ◽  
...  
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Power Supply ◽  
Data Center ◽  
Power Efficiency ◽  
High Performance ◽  
High Efficiency ◽  
High Growth ◽  
General Purpose ◽  
Power Supplies

With the advent of big data and cloud computing solutions, enterprise demand for servers is increasing. There is especially high growth for Intel based x86 server platforms. Today’s datacenters are in constant pursuit of high performance/high availability computing solutions coupled with low power consumption and low heat generation and the ability to manage all of this through advanced telemetry data gathering. This paper showcases one such solution of an updated rack and server architecture that promises such improvements. The ability to manage server and data center power consumption and cooling more completely is critical in effectively managing datacenter costs and reducing the PUE in the data center. Traditional Intel based 1U and 2U form factor servers have existed in the data center for decades. These general purpose x86 server designs by the major OEM’s are, for all practical purposes, very similar in their power consumption and thermal output. Power supplies and thermal designs for server in the past have not been optimized for high efficiency. In addition, IT managers need to know more information about servers in order to optimize data center cooling and power use, an improved server/rack design needs to be built to take advantage of more efficient power supplies or PDU’s and more efficient means of cooling server compute resources than from traditional internal server fans. This is the constant pursuit of corporations looking at new ways to improving efficiency and gaining a competitive advantage. A new way to optimize power consumption and improve cooling is a complete redesign of the traditional server rack. Extracting internal server power supplies and server fans and centralizing these within the rack aims to achieve this goal. This type of design achieves an entirely new low power target by utilizing centralized, high efficiency PDU’s that power all servers within the rack. Cooling is improved by also utilizing large efficient rack based fans for airflow to all servers. Also, opening up the server design is to allow greater airflow across server components for improved cooling. This centralized power supply breaks through the traditional server power limits. Rack based PDU’s can adjust the power efficiency to a more optimum point. Combine this with the use of online + offline modes within one single power supply. Cold backup makes data center power to achieve optimal power efficiency. In addition, unifying the mechanical structure and thermal definitions within the rack solution for server cooling and PSU information allows IT to collect all server power and thermal information centrally for improved ease in analyzing and processing.

scholarly journals Implementation and Use of Wide Fields in Future Very Large Telescopes

1984 ◽  
Vol 78 ◽  
pp. 549-562 ◽  
Author(s):  
J.R.P. Angel
Keyword(s):  
High Efficiency ◽  
Optical Design ◽  
Atmospheric Dispersion ◽  
General Purpose ◽  
Full Potential ◽  
Large Area ◽  
Full Field ◽  
Drift Scan ◽  
Large Telescopes ◽  
Ccd Arrays

AbstractThe full potential of the next generation of larger telescopes will be realized only if they have well instrumented large fields of view. Scientific problems for which very large ground-based optical telescopes will be of most value often will need surveys to very deep limits with imaging and slitless spectroscopy, followed by spectroscopy of faint objects taken many at once over the field. Improved instruments and detectors for this purpose are being developed. Remotely positioned fibers allow the coupling of light from many objects in the field to the spectrograph slit. CCD arrays, operated in the TDI or drift scan mode, will make large area detectors of high efficiency that may supercede photographic plates. An ideal telescope optical design should be based on a fast parabolic primary, have a field of at least 1° with achromatic images < 0.25 arcseconds and have provision for dispersive elements to be used for slitless spectroscopy and compensation of atmospheric dispersion over the full field. A good solution for a general purpose telescope that can satisfy these needs is given by a three element refractive corrector at a fast Cassegrain focus. A specialized telescope dedicated to sky surveys, with better image quality and higher throughput than presently available, might be built as a scaled up Schmidt with very large photographic plates. Better performance in most areas should be obtained with a large CCD mosaic detector operated in the drift scan mode at a telescope with a 2-mirror reflecting corrector.

Design of On-Line Detection System for Paper Defects Based on Line-Scan Camera

2014 ◽  
Vol 536-537 ◽  
pp. 268-271
Author(s):  
Ping He ◽  
Chao Liu ◽  
Meng Wang ◽  
Sheng Mei Cao
Keyword(s):  
High Efficiency ◽  
Detection System ◽  
Low Cost ◽  
Digital Camera ◽  
Line Detection ◽  
Detection Scheme ◽  
Line Scan ◽  
On Line ◽  
Increasing Demand ◽  
Technology Level

Paper defects mean that there are some defects in the paper such as hole, emboss, and fold during the paper production, which mainly results from the limitation of technological level. In the past time, artificial visual inspection and off-line checking were often used to detect the paper defects. However, its shortcoming was highlighted along with the improvement of industrial technology level and increasing demand for paper. In order to realize the online detection and markers for paper defects, the project designs the on-line detection system based on line-scan digital camera. Firstly, the principle and detection scheme of the system for the paper defects was presented. Then the overall structure of the system was designed. After that, the hardware circuit of the system was designed using TMS320F2812 as main control chip. It mainly consists of the function of each module and the working process of the system. Finally, the software of the image acquisition system was presented. With the experimental verification, the system has advantages of low cost, high efficiency and strong resistance to interference. The functions and indexes achieved the design requirements.

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