Digital Commons Network^™

Preachers, Politicians And People Of Character: A Rationale For The Centrality Of A Public-Speaking Course In The Core Curriculum, Blake J. Neff

Journal of the Association for Communication Administration

Administrators in colleges and universities across America continue to debate the relative advantages of education designed to develop vocational skills and education committed to the liberal arts. This essay demonstrates that public speaking as the basic communication course bridges the divide. That course provides a necessary vocational skill for a host of professions, and in addition strongly supports liberal arts by bringing instructional units in self-discipline, critical thinking, listening, and academic preparedness to the core curriculum.

Multiple Shoot Regeneration Of Plumular Apices Of Chickpea, Muhammad Aasim, Si̇bel Day, Fereshteh Rezaei, Mortaza Hajyzadeh

Turkish Journal of Agriculture and Forestry

Chickpea (Cicer arietinum L.) is an important grain legume used almost all over the world. Development of new repeatable and reliable tissue culture protocols is very important for improvement of breeding and genetic transformation studies. It is a highly recalcitrant plant and there is an urgent need to develop a regeneration protocol that can ensure easy multiple and qualitative superior shoots that could be rooted and yield fertile plants. Unconditioned plumular apices and plumular apices preconditioned with 10 mg L^{-1} benzylaminopurine (BA) for 10 days were cultured on Murashige and Skoog (MS) medium supplemented with 0.25-2.00 mg L^{-1} BA with …

Online Tomato Sorting Based On Shape, Maturity, Size, And Surface Defects Using Machine Vision, Omid Omidi Arjenaki, Parviz Ahmadi Moghaddam, Asad Moddares Motlagh

Turkish Journal of Agriculture and Forestry

Online sorting of tomatoes according to their features is an important postharvest procedure. The purpose of this research was to develop an efficient machine vision-based experimental sorting system for tomatoes. Relevant sorting parameters included shape (oblong and circular), size (small and large), maturity (color), and defects. The variables defining shape, maturity, and size of the tomatoes were eccentricity, average of color components, and 2-D pixel area, respectively. Tomato defects include color disorders, growth cracks, sunscald, and early blight. The sorting system involved the use of a CCD camera, a microcontroller, sensors, and a computer. Images were analyzed with an algorithm …

Ecology, Toxicity, And Hydrolytic Activities Of Bacillus Thuringiensis In Forests, Fouad Al-Momani, Maher Obeidat

Turkish Journal of Agriculture and Forestry

The investigation of Bacillus thuringiensis (Bt) in 16 forest soil samples from Ajloun, northern Jordan, involved the isolation of 23 isolates toxic to the third instar dipteran larvae of Drosophila melanogaster and 7 isolates toxic to the third instar lepidopteran larvae of Ephestia kuehniella. The highest viable count of Bt was found in Ebeen forest soils (14.24 × 10^7 CFU g^{-1}), and the lowest viable count was found in Rasoun forest soils. The lethal concentration (LC_{50}) of Bt isolates indicated a variation in their toxicity to D. melanogaster and E. kuehniella larvae, with lower LC_{50} values for D. melanogaster suggesting …

Effects Of Thinning Intensity On The Growth Of Narrow-Leaved Ash (Fraxinus Angustifolia Subsp. Oxycarpa) Plantations, Emrah Çi̇çek, Faruk Yilmaz, Ali̇ Kemal Özbayram, Mehmet Efe, Murat Yilmaz, Ayhan Usta

Turkish Journal of Agriculture and Forestry

Narrow-leaved ash (Fraxinus angustifolia) is one of the important broadleaved tree species, and it is becoming more important in European forestry because of its valuable wood and fast growing ability. Despite its wide natural range and high economic value, there is little or very limited information about the effects of thinning on the growth and development of ash stands, especially in plantations. In this study, 2 thinning experiments were carried out to determine the effects of thinning intensity on the growth of diameter, height, basal area, and volume in narrow-leaved ash plantations over a 6-year period in Adapazarı, Turkey. In …

Adhesion Properties Of Some Protective Layers Exposed To Outside Weather Conditions For Five Years, Mehmet Budakçi, Ci̇hat Taşçioğlu

Turkish Journal of Agriculture and Forestry

In this study, the long-term (5-year) performances of 2 varnish systems, semitransparent alkyd-based brown stain (SABBS) and alkyd-based clear varnish (ABCV), were evaluated on preservative-treated Scots pine (Pinus sylvestris L.) sapwood. Prior to varnish application, specimens were impregnated with 2 different types of wood preservative. The experimental variables were varnish type, layer thickness, and wood preservative. ASTM D 1641 was followed for exposing wood specimens to outdoor conditions. The effects of long-term exposure on adhesion properties of applied varnish systems were tested according to ASTM D 4541. Long-term outdoor exposure resulted in 4.2% and 33.9% reductions in the adhesion properties …

Mapping Of Thermal Comfort For Outdoor Recreation Planning Using Gis: The Case Of Isparta Province (Turkey), Mehmet Topay

Turkish Journal of Agriculture and Forestry

This study presents a model for the physical planning process of thermal comfort (TC), which is very important for outdoor recreation planning, using thermal perception maps (TPMs). For this purpose, a TPM of Isparta Province was produced according to the physiologically equivalent temperature (PET) index from climatic data of the province. To determine the TC structure of the province, climatic data were collected from 16 meteorology stations. The RayMan 1.2 program was used to obtain the monthly PET values of the stations, and the inverse distance weighted interpolation technique in geographic information system (GIS) software was used to produce monthly …

Effect Of Sewage Sludge On Metal Content Of Grassland Soil And Herbage In Semiarid Lands, Ösmetullah Arvas, Bi̇lal Keski̇n, İbrahi̇m Hakki Yilmaz

Turkish Journal of Agriculture and Forestry

Utilization for agriculture is one of the main disposal methods for sewage sludge. Subirrigated pastures are close to settlements and under intensive usage. The objective of this study was to investigate the effects of sewage sludge on subirrigated pasture soil and plant metal concentrations, and the relationship between them. Activated sewage sludge was applied to surface grassland at 25, 50, 75, and 100 t ha^{-1} year^{-1} treatments for 2 years. The concentration of all metals in topsoil (0-20 cm) increased depending on application dosages, but only Zn concentration increased in subsoil (20-40 cm) consistently. While in the second year the …

Mitigation Effects Of Glycinebetaine On Oxidative Stress And Some Key Growth Parameters Of Maize Exposed To Salt Stress, Cengi̇z Kaya, Osman Sönmez, Sali̇h Aydemi̇r, Murat Di̇ki̇li̇taş

Turkish Journal of Agriculture and Forestry

The aim of the current study was to investigate the effects of glycinebetaine (GB) on oxidative stress and some key growth parameters in maize (Zea mays L. 'DK 647 F1') grown under saline conditions. Maize seedlings were grown in pots containing perlite. The experiment was designed in a 2 × 2 factorial arrangement with 2 levels (0 and 100 mM) of sodium chloride (NaCl) and 2 levels (25 and 50 mM) of GB sprayed onto leaves of maize seedlings. Saline stress caused a considerable decline in total dry matter, chlorophyll content, relative water content (RWC), peroxidase (POD; EC. 1.11.1.7), and …

Effect Of Geographical Variation On The Sugar Composition Of The Oriental Beech (Fagus Orientalis Lipsky), Deni̇z Güney, Zehra Duygu Bak, Fatma Aydinoğlu, İbrahi̇m Turna, Fai̇k Ahmet Ayaz

Turkish Journal of Agriculture and Forestry

Geographical variation in soluble sugar concentrations in seeds from oriental beech (Fagus orientalis Lipsky) trees of different origins in Turkey was determined using high performance liquid chromatography. The results demonstrated that the most significant soluble sugars, in order of importance, were sucrose, glucose, and fructose. All free sugars varied significantly (P < 0.05) within and among populations. In general, both total and soluble sugar levels tended to be higher in northern populations compared to southern ones. Cluster and discriminant analyses divided seed sources into 3 distinct groups corresponding to a north, south, and west division of oriental beech populations.

Effects Of Adding Crown Variables In Stem Taper And Volume Predictions For Black Pine, Ramazan Özçeli̇k, Cafer Bal

Turkish Journal of Agriculture and Forestry

Crown characteristics are an important component of growth and yield models. The stem form of a tree depends to a large extent on the tree crown dimensions. However, there is no unified agreement on whether crown variables (crown ratio and crown length) should be incorporated into taper models for accurate predictions of diameter and volume. The purpose of this study was to investigate the level of improvement that the incorporation of crown variables into taper equations for black pine (Pinus nigra J.F.Arnold subsp. pallasiana (Lamb.) Holmboe) gives to diameter and stem volume predictions. Linear and nonlinear crown variable functions were …

Effects Of Organic Manures And Non-Chemical Weed Control On Wheat. Ii. Grain Quality, Sancar Bulut, Ali̇ Öztürk, Mehmet Murat Karaoğlu, Nesri̇n Yildiz

Turkish Journal of Agriculture and Forestry

Deficit plant nutrients, especially nitrogen, and weed competition are the most critical problems in organic farming. This research was carried out on research plots of the Agricultural Research and Extension Center of Atatürk University Agricultural Faculty during the cropping seasons of 2006-07, 2007-08, and 2008-09 under dry farming conditions. A factorial experimental design with 4 replications was used to set up the experimental plots. The factors were 2 wheat cultivars (Kırik and Doğu-88), 3 weed control practices (weedy control, hand weeding, dense sowing), and 7 fertilizer sources [control, standard inorganic (NP), Bio-Organic (Bio), Bio-SR Organic (Bio SR), Leonardite, Organic fertilizer …

Development Of Short Gssrs In G. Arboreum And Their Utilization In Phylogenetic Studies, Tayyaba Shaheen, Yusuf Zafar, James M. Stewart, Mehboob-Ur Rahman

Turkish Journal of Agriculture and Forestry

Microsatellite regions in DNA fragments of Gossypium arboreum were explored and PCR products 500-800 bp long were analyzed for genomic simple sequence repeats (gSSRs). From 39 segments, 23 short gSSRs were identified; on average they occurred every 1.6 kb. Primers were used to amplify fragments from 18 diploid species representing 6 diploid genomes and 1 tetraploid species, G. hirsutum (AD). The phylogeny of diploid genomes was subsequently determined. No primer amplified the DNA from all genotypes; however, amplification occurred in 59% of 437 PCR events. All genomes were grouped into 2 clusters (a and b). The obtained phylogeny of the …

Auxetic Springs For Seating, Jerzy Smardzewski

Turkish Journal of Agriculture and Forestry

It is commonly believed that furniture spring systems are far more durable and friendly to use than foam systems. The aim of this research project was to design and realise models of individual auxetic compression springs and determine their resistance to cyclic as well as prolonged static loads. The study was conducted using numerical calculations and verification of results by laboratory experiments. The results of the performed investigations made it possible to conclude that the designed spring had stiffness characteristics similar to the compression characteristics of polyurethane foams. Cyclical and prolonged static loads have no significant influence on changes in …

Essential Oil Composition Of Sweet Basil Cultivars As Affected By Nitrogen And Potassium Fertilization, Renata Nurzynska-Wierdak, Bartlomiej Borowski, Katarzyna Dzida, Grazyna Zawislak, Radoslaw Kowalski

Turkish Journal of Agriculture and Forestry

This study was designed to find correlations between the rate of nitrogen and potassium and basil herb quality resulting from essential oil content and composition. An increase in the amount of nitrogen in the nutritional environment of the plants resulted in the enhanced accumulation of essential oil, as well as in a rise in linalool and germacrene D concentration. The present study also showed increased content of essential oil in the herb, as well as an increase of 1,8-cineole in the oil under the influence of the increased rate of potassium. The studied basil cultivars Kasia and Wala were characterized …

Modification Of Water Vapor Diffusion In Poplar Wood (Populus Nigra L.) By Steaming At High Temperatures, Maedeh Sayar, Asghar Tarmian

Turkish Journal of Agriculture and Forestry

In this investigation, the effect of steaming on the water vapor diffusion coefficient of poplar wood (Populus nigra L.) was studied. Boards with dimensions of 50 × 50 × 150 (W × H × L) mm3 and average moisture content of 12% were steamed at temperatures of 120, 140, 160, and 180 ^°C for 1, 2, and 3 h. The diffusion coefficients were then measured based on Fick's law of diffusion in steady-state conditions using the cup method. Results showed that the steaming of poplar wood at all mentioned temperatures can decrease the water vapor diffusion coefficient. However, no further …

Phenolic Composition And Antioxidant Activity Of Salvia Tomentosa Miller: Effects Of Cultivation, Harvesting Year, And Storage, Cüneyt Di̇nçer, İsmai̇l Tontul, İhsan Burak Çam, Kübra Sultan Özdemi̇r, Ayhan Topuz, Hi̇lal Şahi̇n Nadeem, Saadet Tuğrul Ay, Ramazan Süleyman Göktürk

Turkish Journal of Agriculture and Forestry

Salvia tomentosa is a common medicinal plant, and it is consumed as an herbal tea in some Mediterranean countries. It has been extensively collected from its natural habitat, and careless collection has caused the recent extinction of some plants. The present study was undertaken to cultivate S. tomentosa and compare the phenolic composition and antioxidant properties of wild and cultivated plants. Total phenolics, total flavonoids, and antioxidant activity of S. tomentosa ranged between 49.27 and 66.15 mg GAE g^{-1} dry weight (dw), 36.27 and 40.83 mg catechin g^{-1} dw, and 1.77 and 2.29 mg dw mg^{-1} DPPH, respectively. Total phenolic …

Combustion Properties Of Medium-Density Fiberboards Coated By A Mixture Of Calcite And Various Fire Retardants, Abdullah İstek, Deni̇z Aydemi̇r, Hüdaverdi̇ Eroğlu

Turkish Journal of Agriculture and Forestry

In this study, we investigated the effect of fire retardants (FRs) on the combustion performance of medium-density fiber boards (MDFs) that were coated with mixtures of water, binder, calcite, and various FRs (FR coatings). We used MDF panels, calcite as the coating pigment, melamine formaldehyde as the binder, and FRs, including borax (BX), boric acid (BA), and zinc borate (ZB), to investigate the effects on the properties of the test boards. According to the results of combustion properties of coated MDFs with FR coatings, BA presented the highest stability, followed by BX and ZB, respectively. It was also found that …

Leading Through Change: A Study Of The Role Of Central Office Leadership In The Process Of Secondary Change, Dirk A. Halupnik

Dissertations and Theses @ UNI

The purpose of this study was to more fully understand the actions of district level leaders in a major change effort and their effects on the change process. Furthermore this study aimed to provide additional information about the factors that school district central office administrators confront when making the decision to add another high school and the actions taken by these administrators to lead the district through this process so that other school districts and leaders may learn from this. The methodology for this study was a qualitative case study approach in which central office leaders in a district that …

Physicochemical And Sensory Properties Of Mulberry Products: Gümüşhane Pestil And Köme, Oktay Yildiz

Turkish Journal of Agriculture and Forestry

'Pestil' and 'köme', well known as traditional Turkish foods, are prepared from a mulberry, honey, walnut, hazelnut, and flour mixture. Although they have been produced for the last few decades on an industrial scale, the production methods and properties of the products are not standardized yet. Gümüşhane pestil and köme have been registered and attained Geographical Registration Certificates from the Turkish Patent Institute with their unique production methods and properties, among many similar products in the world markets. Thus, some biochemical, physical, and sensory properties of pestil and köme were investigated. In addition, the main raw material (mulberry) and semifinished …

Sustainable Approach To Produce Bioethanol From Karanja (Pongamia Pinnata) Oilseed Residue, Pooja Doshi, Gopal Srivastava

Turkish Journal of Agriculture and Forestry

Agricultural biomass is the world's largest, most sustainable, and most promising renewable energy source. This study investigated the potential of Karanja (Pongamia pinnata) oilseed residual waste (defatted kernel, hull, and their mixture) as a source of ethanol. The pretreatment of the finely ground samples was carried out using dilute sulfuric acid (0.5%) hydrolysis at a higher temperature of 121 °C and 15 psi pressure for 90 min. The pretreatment usually removes the lignin and facilitates the hydrolysis of cellulose and hemicelluloses. They were further hydrolyzed using 5% H_2SO_4 at 50 °C for 70 h. The analyses of hydrolyzed products have …

Overachiever's Guide To Getting Unstuck : Replan, Reprioritize, Reaffirm, William L. Reeb

Guides, Handbooks and Manuals

No abstract provided.

The Effect Of Electron Beam Irradiation On Β-Glucan Content, X-Ray Diffraction Of Starch, Protein Subunit Patterns, And In Vivo Digestibility Of Barley Grain In Cockerels, Parvin Shawrang, Ali Asghar Sadeghi, Behnam Ghorbani

Turkish Journal of Veterinary & Animal Sciences

This study was carried out to evaluate the effect of electron beam radiation on the chemical composition, the \beta-glucan content, the water extract viscosity, the crystallinity of starch, the patterns of protein subunits, and the in vivo digestibility of barley grain. Barley samples were irradiated at doses of 10, 15, 20, 25, and 30 kGy under the electron beam. In a completely randomized design, cockerels were fed raw or irradiated samples to determine the digestibility of crude protein and gross energy. Irradiation had no effect on the total contents of protein, starch, and \beta-glucan. At doses of 10, 15, 20, …

A New Model For Partial Immobilization Of Rat Hind Limb After Achilles Tendon Excision/Reinterposition, Cansin Güngörmüş, Mehmet Alper Çeti̇nkaya, Alper Demi̇rutku

Turkish Journal of Veterinary & Animal Sciences

There have been several attempts to repair the Achilles tendon by surgery or replacement with graft materials. Because tissue repair is a complex process, tendon healing occurs slowly. In rats, immobilization of the limb is essential during recovery. There are immobilization methods such as plaster or fiber casting. According to prolonged recovery, most of the procedures cause skin ulceration, decrease in weight, restrictions in checking the surgery area, and slipping out of the cast. Our aim was to apply a suture around the defect for immobilization. Tendons of 30 male Wistar rats (250 ± 50 g and aged 8 ± …

Microbiological And Parasitological Quality Of Honey Produced In İstanbul, Emek Dümen, Hayretti̇n Akkaya, Gülay Merve Öz, Funda Hati̇ce Sezgi̇n

Turkish Journal of Veterinary & Animal Sciences

In this study, 500 honey samples (with combs) were collected directly from the hives in various parts of İstanbul. The presence and the interactions of different microbiological and parasitological parameters (coliforms, Escherichia coli, Staphylococcus aureus, Ascosphaera apis, Aspergillus flavus, Aspergillus fumigatus, Paenibacillus larvae, Melissococcus pluton, and Nosema spp.) were investigated. According to the results, 80 samples (16%) tested positive for coliforms, 18 samples (3.6%) for E. coli, 67 samples (13.4%) for S. aureus, 51 samples (10.2%) for A. apis, 22 samples (4.4%) for A. flavus, 32 samples (6.4%) for A. fumigatus, 16 samples (3.2%) for P. larvae, 29 samples (5.8%) …

Effects Of Vacuum Packaging On The Quality Of Frozen Cooked Döner Kebab, Enver Bariş Bi̇ngöl, Funda Yilmaz, Karlo Muratoğlu, Kami̇l Bostan

Turkish Journal of Veterinary & Animal Sciences

Döner kebab is a traditional Turkish dish, recognized worldwide. It is an important fast-food meal sold by its local name in many countries. Döner kebab is consumed as a fresh dish and should be served immediately after cooking. Raw döner kebab can be stored by freezing, but there is not enough knowledge about the storage of cooked döner kebab. This study was conducted to investigate the effect of vacuum packaging on the meat quality of frozen cooked döner kebab. Packaged döner kebabs were stored at -18 ± 1 °C for up to 12 months and examined monthly for microbiological (total …

The Mobile Health Revolution?, Nathan Cortez

Faculty Journal Articles and Book Chapters

Rarely does a class of technologies excite physicians, patients, financeers, gadgeteers, and policymakers alike. But mobile health — the use of mobile devices like smartphones and tablets for health or medical purposes — has captured our collective imagination. Observers predict that mobile health, also referred to as “mHealth” or “medical apps,” can save millions of lives, billions in spending, and democratize access to health care. Proponents argue that mobile health technologies will transform the ways in which we deliver, consume, measure, and pay for care; disrupting our sclerotic health care system.

This Article evaluates mobile health and its many ambitions. …

Formalism And Antiformalism In Patent Law Adjudication: Rules And Standards, David O. Taylor

Faculty Journal Articles and Book Chapters

The United States Court of Appeals for the Federal Circuit exists at least in part to achieve goals related to patent law that the Supreme Court singularly failed to achieve. Since the Federal Circuit’s inception just over thirty years ago, however, critics have shifted blame for problems with the patent system from the Supreme Court to the Federal Circuit. A common criticism that has gained strength is that the Federal Circuit engages in overly formalistic rule-based adjudication in patent cases. One aspect of this criticism is that the Federal Circuit too often creates rules to govern patent law. In this …

The Wonder-Clause, Anna Gelpern, Mitu Gulati

Faculty Scholarship

The Greek debt crisis prompted EU officials to embark on a radical reconstruction of the European sovereign debt markets. Prominently featured in this reconstruction was a set of contract provisions called Collective Action Clauses, or CACs. CACs are supposed to help governments and private creditors to renegotiate unsustainable debt contracts, and obviate the need for EU bailouts. But European sovereign debt contacts were already amenable to restructuring; adding CACs could make it harder. Why, then, promote CACs at all, and cast them in such a central role in the market reform initiative? Using interviews with participants in the initiative and …

Balancing Human And Machine Contributions In Human Computation Systems, R. Jordan Crouser, Alvitta Ottley, Remco Chang

Computer Science: Faculty Publications

Many interesting and successful human computation systems leverage the complementary computational strengths of both humans and machines to solve these problems. In this chapter, we examine Human Computation as a type of Human-Computer Collaboration—collaboration involving at least one human and at least one computational agent. We discuss recent advances in the open area of function allocation, and explore how to balance the contributions of humans and machines in computational systems. We then explore how human-computer collaborative strategies can be used to solve problems that are difficult or computationally infeasible for computers or humans alone.