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128 results on '"Hawley, David"'

3. On the pros and cons of red photons for greenhouse tomato production : increasing the percentage of red photons improves LED efficacy but plant responses are cultivar-specific

Author

Kusuma, Paul, Ouzounis, Theoharis, Hawley, David, Kerstens, Tijmen, Marcelis, Leo F.M., Heuvelink, Ep, Kusuma, Paul, Ouzounis, Theoharis, Hawley, David, Kerstens, Tijmen, Marcelis, Leo F.M., and Heuvelink, Ep

Abstract

Supplemental lighting is necessary for winter greenhouse tomato production, and optimised spectra must consider both yield and energy use. In a 20-week winter greenhouse experiment, two common commercial tomato cultivars–‘Merlice’ and ‘Brioso’–were grown under four LED spectra with 38%, 63%, 81%, and 95% red photons. As the percentage of red photons increased, the blue and green percentages decreased (not at the same ratio). Stem length, specific leaf area, and dry mass partitioning were not significantly affected by spectra in either cultivar, but increasing the red percentage from 38% to 95% decreased harvested fruit fresh mass by 13%, total plant dry mass by 7.1%, and fruit dry mass by 9.5% in ‘Merlice’. There were no significant differences in these parameters for ‘Brioso’. The yield kWh−1 increased with increasing percent red in both cultivars because LED fixtures with higher fractions of photons from 660 nm red LEDs have higher photon efficacies (µmol J−1). The efficacies of the lamps in this study were estimated to range from 2.6 to 3.6 µmol J−1. Growers must consider tradeoffs that can occur between yield and efficacy in some cultivars, and how these factors apply to their situation, when choosing the spectrum for their greenhouse.

Published
2023

10. How Long Do International School Heads Survive? A Research Analysis (Part II).

Author

Hawley, David B.

Abstract

Part one of a 10-year study showed that international school heads remain, on average, only 2.8 years in a given position. The second part of the study analyzed why a subset of the group (83 school heads) left their positions. Reasons given included problems involving the board of directors, compensation packages, retirement issues and benefits, personal or family reasons, location, and school characteristics. (MLH)

Published
1995

11. How Long Do International School Heads Survive? Part 1.

Author

Hawley, David

Abstract

Condenses a research study of chief administrators' longevity in U.S. accredited international schools worldwide. Identifies several factors that significantly affect (usually brief) job duration, including school governing structure, the head's teaching experience and number of years in international education, and school characteristics. The number of nonparental board members has significant predictive value. (23 references) (MLH)

Published
1994

15. X-ray studies of organo-bismuth compounds and caryophyllene derivatives

Author

Hawley, David McKill

Subjects
540
Abstract

This thesis is divided into three parts. In the first, some aspects of the theory and methods of X-ray Crystallography are introduced and briefly discussed. The second and final parts are concerned with the applications of these methods in the elucidation of the crystal structures of four molecules. Accounts of the structural analyses of triphenyl-bismuth, (C6H5)3Bi, and triphenylbismuth dichloride, (C6H5)3BiCl2, are contained in Part II. It has been established that the triphenylbismuth molecule is pyramidal with virtually no hybridisation of the 6s and 6p orbitals of the bismuth. The expected symmetry has been destroyed by the asymmetric rotations of the phenyl groups about the Bi-C bonds. The proposed trigonal bipyramidal structure for triphenylbismuth dichloride has been confirmed by a crystal-structure analysis. The more electronegative chlorine ligands occupy the apical positions with the phenyl groups attached equatorially to the central bismuth atom. Again the molecule possesses no overall symmetry as a result of the unequal rotations of the benzene rings with respect to the equatorial plane. Part III describes the analyses of two caryophyllene rearrangement products, viz., caryophyllene 'iodonitrosite' and the mono-p-bromobenzenesulphonyl ester of the diol derived from pseudoclovene-A. The former belongs to the relatively new class of stable aliphatic nitroxide radicals, and has an N-O bond length of 1.308 A which corresponds to a three-electron bond. The absolute stereochemistries of both derivatives have been established by means of Bijvoet's anomalous dispersion method. Fairly detailed accounts of the conformations of these molecules are given and the ways in which they have undergone distortions, to avoid the severe inherent strain associated with these species in their classical conformations, are discussed.

Published
1969

19. Quality Circles.

Author

Oregon School Study Council, Eugene. and Hawley, David

Abstract

The concept of the quality circle (QC) is outlined and a brief history given of its use in Japan and eventual migration to the United States in 1974. The leaders and participants in QC's are trained in communication and problem-solving skills. The essential techniques used in the QC are brainstorming, consensus, cause and effect analysis, data gathering and analysis, decision analysis, solution generation, presentation techniques, evaluation, and communication/group process training. QC's differ from other participative management processes in three ways: (1) the ultimate decision-making continues to rest with the existing administrative structure, (2) administrators usually adopt QC solutions because they know the participants are trained and skilled in problem-solving techniques, and (3) the facilitator maintains communication with administrators. The Oregon City School District implemented a QC program with three schools selected from a group of nine schools that volunteered to participate. A total of six circles met during 1983-84. Although the district is still evaluating the effectiveness of the program, it has already found an enhanced relationship between administrators and teachers, and the changes enacted as a result of QC recommendations have helped school operations. A list of references and four appendixes are included. (MD)

Published
1984

20. Computers in Education: A Practical Guide for the School Administrator.

Author

Oregon School Study Council, Eugene. and Hawley, David E.

Abstract

This bulletin provides a discussion of the impact of microcomputer technology and functions as a guide for administrators. It examines issues administrators must address if they are to take an active role in implementing computer programs in their schools. Chapter 2 examines hardware evaluation and selection, giving recommendations on types of computers available on the educational market. Chapter 3, considering the learning environment, details specific precautions and provisions that must be made when incorporating computer equipment into the classroom. Chapter 4 outlines computer courseware--describing resources listing available software--and includes sample evaluation sheets. Chapter 5 discusses computers in the curriculum in three areas of application: computer fundamentals, computer science, and computer-assisted instruction. The final chapter outlines implementation of computer programs in schools, and discusses maintenance of equipment, funding, staff education, and planning. Included are five appendixes of resource listings and lists of reference and interview annotations. (MD)

Published
1984

21. Costs, Effects, and Utility of Microcomputer-Assisted Instruction. Technical Report, Number 1.

Author

Oregon Univ., Eugene. Center for Advanced Technology in Education. and Hawley, David E.

Abstract

Designed to develop procedures and acquire information to help decision-makers establish policies for the use of microcomputers for computer-assisted instruction (CAI), this study involved the following steps: (1) a school-based research project was conducted to determine the costs and effects of microcomputer-assisted instruction; (2) an analytical procedure for assessing the cost-effectiveness of microcomputer-assisted instruction and traditional instruction was developed; and (3) this analytical procedure was applied to the costs and effects obtained in this study. Subjects were 41 grade 3 students and 38 grade 5 students in a rural area of Saskatchewan, Canada, who were given a pretest to measure mathematics ability, mathematics attitude, and computer literacy. Students at each grade level were then randomly assigned to two groups: the control group received traditional mathematics instruction, and the experimental group received adjunct microcomputer-assisted instruction. On the basis of the findings, it was concluded that the use of supplementary microcomputer-assisted instruction enhanced both the mathematics skills and level of computer literacy of the subjects in the experimental group; there was no significant difference between the effects of the two treatments on student attitudes toward mathematics; and the cost of adjunct microcomputer-assisted mathematics instruction was lower than previous estimates of costs for laboratory-based CAI and more cost-effective than traditional mathematics instruction in relation to the desired outcomes. Seventeen tables are included, 25 references are listed, and additional data are appended. (MES)

Published
1986

22. The Quality Circle Concept.

Author

Hawley, David

Abstract

Quality Circle members identify problems, select one for attention, analyze the potential causes of the problem, and identify and select preferred solutions that are proposed to the administration. Skills, knowledge, and experience gained by people in an education Quality Circle become theirs as well as those of the school. (MLF)

Published
1985

24. Development of a Variable-Spectra LED Array for Optimized Plant Development

Author

Hawley, David and Dixon, Mike

Subjects
amber, photosynthesis, photoblastic, blue, fungi, LED, carbon fixation, food and beverages, plant, adaptation, tomato, cyan, red, lettuce, pepper, germination, green, far red, deep red, light quality, PAR, royal blue
Abstract

Plant development can be dramatically influenced by the quality of light present in its environment. Conventional plant lighting systems do not allow for fine control of light quality, which may not be optimal for all species. To address this problem, a novel lighting system was developed using narrow-bandwidth, multi-coloured LEDs. This system was used to test the effects of different light qualities on germination rate, photosynthesis during vegetative growth, and the photosynthetically adaptive nature of several species. It was found that far red light and blue light can significantly inhibit germination in some species. Red and deep red light was generally most effective at driving photosynthesis during vegetative growth. Plants were shown to have an impaired photosynthetic capacity when abruptly switched to a new light quality. Optimizing germination and photosynthesis are the first steps in designing optimal light “recipes” for plant production. NSERC, Canadian Space Agency, COM DEV International

Published
2013

28. 100 sposobów na Excel 2007 PL. Tworzenie funkcjonalnych arkuszy

Author

Hawley, David E., Hawley, Raina, Hawley, David E., and Hawley, Raina

Subjects
Business--Computer programs, Electronic spreadsheets
Abstract

Wykorzystaj wszystkie mo?liwo?ci Excela, aby tworzy? funkcjonalne i efektowne arkuszeJak analizowa? dane i zarz?dza? nimi?Jak optymalnie wykorzystywa? tabele przestawne?Jak tworzy? spersonalizowane wykresy?Wi?kszo?? u?ytkowników Excela zna tylko drobn? cz??? dost?pnych w nim mo?liwo?ci. Istnieje jednak wiele metod pozwalaj?cych znacz?co poszerzy? wydajno?? tego programu i tworzy? efektowne arkusze kalkulacyjne bez potrzeby czasoch?onnego zdobywania wiedzy. Nowa wersja Excela umo?liwia chocia?by?atwiejsze korzystanie z mechanizmu tabel przestawnych, formatowania warunkowego i nazw zakresów, podgl?du'na?ywo', galerii predefiniowanych stylów oraz grafik SmartArt. Wszystko to sprawia,?e ka?dy mo?e dzi? w swoich arkuszach u?ywa? bardziej skomplikowanych elementów wizualnych i graficznych.Obecnie, kiedy wszystko dzieje si? coraz szybciej, czas staje si? jedn? z najistotniejszych i po??danych warto?ci. Ksi??ka'100 sposobów na Excel 2007 PL. Tworzenie funkcjonalnych arkuszy'pozwala Ci w?a?nie zyska? na czasie - oferuje ponad sto gotowych metod tworzenia funkcjonalnych i efektownych arkuszy, szybkich i niezawodnych rozwi?za? skomplikowanych problemów. Warto tak?e wykorzysta? te metody do przeanalizowania oraz zastosowania niektórych mo?liwo?ci j?zyka Visual Basic for Applications (VBA) - dzi?ki temu b?dziesz móg? zaadaptowa? wszystkie zawarte tu propozycje do w?asnych potrzeb.Skoroszyty i arkuszeWbudowane mechanizmy do analizy danych i zarz?dzania nimiMetody tworzenia nazw i zakresów komórekTabele przestawneFormu?y i funkcjeWykresy i makraWspó?praca Excela z innymi aplikacjami pakietu OfficeWszystko, co chcia?by? widzie? o Excelu, aby natychmiast z niego skorzysta?. Poznaj ponad setk? sposobów skutecznego radzenia sobie z Excelem!

Published
2008

29. Excel Hacks : 100 Industrial Strength Tips and Tools

Author

Hawley, David, Hawley, Raina, Hawley, David, and Hawley, Raina

Subjects
Business--Computer programs, Electronic spreadsheets
Abstract

If you think that getting creative with Excel means the underhanded tweaking of numbers, think again. Excel Hacks shows even the most experienced users how to do things with Excel they might never have thought of doing--and lets them have a little fun while they're at it.Microsoft Excel is not just the dominant spreadsheet in the world; it's also one of the most popular applications ever created. Its success lies not only in its power and flexibility, but also in its streamlined, familiar interface that casually conceals its considerable capabilities. You don't need to know everything that Excel can do in order to use it effectively, but if you're like the millions of Excel power users looking to improve productivity, then Excel Hacks will show you a wide variety of Excel tasks you can put to use, most of which are off the beaten path.With this book, Excel power users can bring a hacker's creative approach to both common and uncommon Excel topics--'hackers'in this sense being those who like to tinker with technology to improve it. The'100 Industrial Strength Tips and Tools'in Excel Hacks include little known'backdoor'adjustments for everything from reducing workbook and worksheet frustration to hacking built-in features such as pivot tables, charts, formulas and functions, and even the macro language.This resourceful roll-up-your-sleeves guide is for intermediate to advanced Excel users eager to explore new ways to make Excel do things--from data analysis to worksheet management to import/export--that you never thought possible. Excel Hacks will help you increase productivity with Excel and give you hours of'hacking'enjoyment along the way.

Published
2008

30. The test of IMF relevancy

Author

Hawley, David

Subjects
International agencies -- Evaluation, General interest, News, opinion and commentary, International Monetary Fund -- Evaluation
Abstract

Byline: David Hawley; senior adviser and acting director, external relations, International Monetary Fund Washington -- Your article IMF Ripe For Shakeup, Paul Martin Says (Report on Business, July 21) falls [...]

Published
2008

31. Excel Hacks : Tips & Tools for Streamlining Your Spreadsheets

Author

Hawley, David E., Hawley, Raina, Hawley, David E., and Hawley, Raina

Subjects
Business--Computer programs, Electronic spreadsheets
Abstract

Millions of users create and share Excel spreadsheets every day, but few go deeply enough to learn the techniques that will make their work much easier. There are many ways to take advantage of Excel's advanced capabilities without spending hours on advanced study. Excel Hacks provides more than 130 hacks -- clever tools, tips and techniques -- that will leapfrog your work beyond the ordinary.Now expanded to include Excel 2007, this resourceful, roll-up-your-sleeves guide gives you little known'backdoor'tricks for several Excel versions using different platforms and external applications. Think of this book as a toolbox. When a need arises or a problem occurs, you can simply use the right tool for the job. Hacks are grouped into chapters so you can find what you need quickly, including ways to:Reduce workbook and worksheet frustration -- manage how users interact with worksheets, find and highlight information, and deal with debris and corruption.Analyze and manage data -- extend and automate these features, moving beyond the limited tasks they were designed to perform.Hack names -- learn not only how to name cells and ranges, but also how to create names that adapt to the data in your spreadsheet.Get the most out of PivotTables -- avoid the problems that make them frustrating and learn how to extend them.Create customized charts -- tweak and combine Excel's built-in charting capabilities.Hack formulas and functions -- subjects range from moving formulas around to dealing with datatype issues to improving recalculation time.Make the most of macros -- including ways to manage them and use them to extend other features.Use the enhanced capabilities of Microsoft Office 2007 to combine Excel with Word, Access, and Outlook.You can either browse through the book or read it from cover to cover, studying the procedures and scripts to learn more about Excel. However you use it, Excel Hacks will help you increase productivity and give you hours of'hacking'enjoyment along the way.

Published
2007

32. Randy Moss released, charged with misdemeanors

Author

Hawley, David and Mayron, Amy

Subjects
General interest, News, opinion and commentary
Abstract

MINNEAPOLIS _ Minnesota Vikings' star receiver Randy Moss walked out of the Hennepin County Jail shortly after 2 p.m. on Wednesday, more than 21 hours after his arrest Tuesday night [...]

Published
2002

35. Suspicious fire kills hundreds of lambs and ewes on farm

Author

Hawley, David

Abstract

Byline: David Hawley ST. PAUL, Minn. _ Dozens of veterinary faculty and students from the University of Minnesota rushed to set up a makeshift animal hospital Monday after a suspicious […]

Published
2005

36. Nurse denies wrongdoing in administering unauthorized flu shots

Author

Hawley, David, Majeski, Tom, Pina, Phillip, and Tosto, Paul

Abstract

Byline: David Hawley, Tom Majeski, Phillip Pina And Paul Tosto ST. PAUL, Minn. _ With state and federal drug labs, police, college administrators and legal experts sorting through the complicated […]

Published
2004

37. Utne Reader has a new look and agenda

Author

Hawley, David

Subjects
Utne Reader (Periodical) -- Criticism and interpretation, Company business management, General interest, News, opinion and commentary
Abstract

The new Utne Reader hit the streets this week and a few people, including founder Eric Utne, are calling it a significantly new magazine. No longer content to be the [...]

Published
1994

38. 1 killed in shooting at Minneapolis government center

Author

Piya, Phillip, Allam, Hannah, Nelson, Tim, and Hawley, David

Abstract

Byline: Phillip Piya, Hannah Allam, Tim Nelson and David Hawley ST. PAUL, Minn. _ A government center in Minneapolis became a homicide scene Monday when a woman opened fire with […]

Published
2003

39. Flight 93 hero buried in home state of Minnesota

Author

Hawley, David

Abstract

MINNEAPOLIS, Minn. _ As a string of commercial airliners lifted into the sky from the nearby airport, the Minnesota man who led a Sept. 11 assault on hijackers aboard United […]

Published
2002

40. Mary Tyler Moore tosses hat again

Author

Hawley, David

Subjects
Moore, Mary Tyler
Abstract

MINNEAPOLIS _ With teeth chattering against a cold wind, actress Mary Tyler Moore stood Wednesday morning on a platform near the downtown Minneapolis intersection where she tossed a tam 30 […]

Published
2002

41. Poet puts words to her people

Author

Hawley, David

Abstract

ST. PAUL, Minn. _ Her poetry is a performance. Clothed in yards of gold-flecked crimson, Asha Ali recites in a repetitive, singing chant, her verses in Somali flowing as a […]

Published
2001

42. Billy Graham moving headquarters from Minneapolis to Charlotte, N.C

Author

Scott, Stephen and Hawley, David

Subjects
Billy Graham Evangelistic Association
Abstract

ST. PAUL, Minn. _ The Billy Graham radio hour always ended with a simple message. To reach us, narrator Cliff Barrows would say, just write to Billy Graham, Minneapolis, Minnesota. […]

Published
2001

43. Minneapolis police frisk Somali athletes in town for festival

Author

Hawley, David

Abstract

ST. PAUL, Minn. _ Athletic teams representing Somali refugee communities from around the world began arriving in the Twin Cities this week to participate in tournaments that commemorate the 41st […]

Published
2001

45. A score for globalization

Author

Hawley, David

Subjects
Open World The Truth About Globalization (Book) -- Legrain, Philippe -- Hawley, David, Books -- Book reviews, Banking, finance and accounting industries, Business, Business, international
Abstract

Philippe Legrain Open World The Truth About Globalization Ivan R. Dee, Publisher, Chicago, Illinois, 2004, 384 pp., $27.50 (cloth) Franklin Foer How Soccer Explains the World An Unlikely Theory of [...]

Published
2004

46. Minnesota man marks the lives _ and deaths _ of orphans

Author

Hawley, David

Abstract

ST. PAUL, Minn. _ Tony Gould grew up hearing stories about the Minneapolis orphanage that took in his father and two uncles after their mother died of tuberculosis. He also […]

Published
2000

47. Some Management Problems In Spaceship Earth: The Megafirm And The Global Industrial Estate: Discussion.

Author

Estafen, Bernard, Hawley, David, Adams, Walter, and Perlmutter, Howard

Subjects
INTERNATIONAL business enterprises, GLOBALIZATION, ACADEMIC discourse, DEBATE, COMPLEX organizations, INTERNATIONAL trade, BIG business, INDUSTRIAL management, COMPETITIVE advantage in business, MANAGEMENT
Abstract

The article presents several comments on an earlier article in this issue titled "Some Management Problems in Spaceship Earth: The Megafirm and the Global Industrial Estate," by Howard V. Perlmutter. Estafen addresses the forces opposing the development of a global industrial state; Hawley notes his company's move towards diversification in the domestic market; Adams highlights where the steel industry is failing to remain competitive; and Perlmutter redirects the conversation towards competitive advantage.

Published
1969
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48. The addition of 16,000 rooms may set off a resort rate war in Las Vegas

Author

Hawley, David

Subjects
Gambling industry -- Buildings and facilities, Las Vegas, Nevada -- Buildings and facilities
Abstract

LAS VEGAS _ If you haven't been to Las Vegas lately and you're thinking about visiting before the coming of the millennium, be prepared for some big changes. Make that […]

Published
1998

49. At a glance: new resorts

Author

Hawley, David

Subjects
Hilton Worldwide Inc.
Abstract

Here's a quick look at the new Las Vegas mega-resorts that are scheduled to open within the next 18 months: _THE BELLAGIO Steve Wynn's sumptuous luxury resort with its 10-acre […]

Published
1998

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