bluuebunny/crossref_metadata_2025_split huggingface dataset:
Determining the Effects of a 4-Week Structured Strength and Flexibility Exercise Program on Functional Status of Subjects with Osteoporosis
Authors: Sahni Payal , Nieves Jeri W. 
Published: May 2019

Background Osteoporosis is a systemic disease resulting in low bone mineral density, increased risk of fractures, and falls, muscle weakness, and compromised balance. Nutrition and physical exercise have been shown to be effective in the treatment of low bone mineral density and, with more severe osteoporosis, as adjuncts to pharmaceutical treatments. However, living with osteoporosis may diminish an individual's ability and confidence to perform activities that enhance bone density. Questions/Purposes This study investigated the following question: In women with osteoporosis, will there be a greater improvement in balance, lower-extremity strength, mobility, and confidence in performing ambulatory activities after participating in a structured exercise program as compared to a control group? Methods This was a prospective comparative trial in which 48 women who had a confirmed diagnosis of osteoporosis were enrolled in either an exercise group (a 4-week exercise program) or a control group (no structured exercise). Functional outcomes using valid and reliable tools were measured before and after exercise in the study group and at comparable times in the control group. Differences in function were assessed by paired t tests to evaluate group differences in functional outcomes. Results Of the 48 women recruited, 45 completed the study. Women in the exercise group ( n = 27) demonstrated an increase in balance and lower-extremity strength over women in the control group ( n = 18). Both groups showed an increase in mobility but no change in confidence in ambulation. Conclusion This study showed that women with osteoporosis demonstrated improved balance and lower-extremity strength after participating in a structured exercise program. These changes may be important in improving overall functional status.
Analysis of Problematic Smartphone Use Across Different Age Groups within the ‘Components Model of Addiction’
Authors: Csibi Sándor , Griffiths Mark D. , Demetrovics Zsolt , Szabo Attila 
Published: May 2019

AbstractSmartphones have rapidly become indispensable in modern life. The wide spectrum of activities and virtual interaction possibilities with the mobile device render some individuals prone to exaggerated use exhibiting core symptoms akin to substance addiction. The core common symptoms of addictions can be framed within the ‘components model of addiction.’ Based on the different pattern of smartphone use in various age groups, the symptoms and the risk of smartphone addiction may differ during various life stages. Some age groups may be more at risk of smartphone addiction than others. This hypothesis was tested utilizing data from six surveys comprising 1603 individuals representing various age groups. Results obtained through two recommended age-group analyses both confirmed that preschool children and young adults are at highest risk for smartphone-related addictive behavior. Furthermore, the various components of addiction also differed between the age groups. These results suggest that preventive measures should be primarily targeted to the two most vulnerable age groups represented by preschool children and emerging adults. The results of the present study help identify the dominant addiction symptoms in the various age groups that could pinpoint aspects which should be targeted in implementation of various measures aimed at the prevention of dysfunctional smartphone use.
New modified shift-splitting preconditioners for non-symmetric saddle point problems
Authors: Ardeshiry Mahin , Goughery Hossein Sadeghi , Pour Hossein Noormohammadi 
Published: May 2019

Abstract
Zhou et al. and Huang et al. have proposed the modified shift-splitting (MSS) preconditioner and the generalized modified shift-splitting (GMSS) for non-symmetric saddle point problems, respectively. They have used symmetric positive definite and skew-symmetric splitting of the (1, 1)-block in a saddle point problem. In this paper, we use positive definite and skew-symmetric splitting instead and present new modified shift-splitting (NMSS) method for solving large sparse linear systems in saddle point form with a dominant positive definite part in (1, 1)-block. We investigate the convergence and semi-convergence properties of this method for nonsingular and singular saddle point problems. We also use the NMSS method as a preconditioner for GMRES method. The numerical results show that if the (1, 1)-block has a positive definite dominant part, the NMSS-preconditioned GMRES method can cause better performance results compared to other preconditioned GMRES methods such as GMSS, MSS, Uzawa-HSS and PU-STS. Meanwhile, the NMSS preconditioner is made for non-symmetric saddle point problems with symmetric and non-symmetric (1, 1)-blocks.
Echogenic Kidneys as an Antenatal Clue to the Metabolic Etiology: A Case Report
Authors: Yadav Sakshi , Kabra Madhulika , Gupta Neerja 
Published: May 2019

AbstractAntenatally diagnosed echogenic kidneys have several underlying etiologies such as aneuploidies, monogenic isolated or syndromic polycystic kidney disease, infections and rarely with inborn error of metabolism. Even a careful evaluation for additional abnormalities may not be able to provide a specific diagnosis. However with next generation sequencing, the diagnostic odyssey can be ended successfully. We report one such case of carnitine palmitoyltransferase II deficiency (CPT2) deficiency that manifested as isolated echogenic kidneys with early neonatal demise where successful early prenatal diagnosis was possible in the subsequent pregnancy.
Adapting Tropical Pasture Research to the Production System: from Australian Ranching to African Pastoralism
Authors: Bayer Wolfgang , Waters-Bayer Ann 
Published: May 2019

SUMMARYThe questions and design of pasture research in tropical Australia and the resulting technologies address problems encountered in the prevailing extensive beef-production systems. In African pastoral systems, forage resource use is more intensive and complex, and production aims are manifold. An example of applied research in central Nigeria illustrates the usefulness of certain components of Australian pasture technology but the need to adapt them, particularly with respect to pasture utilization and management, within trials deliberately designed to address the differing problems in the local pastoral system.
Was This in Your Statistics Textbook? VI. Regression and Covariance
Authors: Finney D. J. 
Published: May 2019

SUMMARYThis paper concludes the series with comments on regression, covariance analysis, and correlation. The importance of choosing a regression function, whether linear or non-linear, appropriate to problem and data is emphasized and the nature of parameter estimation is outlined. The merits of transformation of variates and the importance of introducing a proper number of parameters are briefly discussed. Common misunderstandings of the meaning of ‘the regression of y on x’ for experimental data are related to the analysis of covariance.Regression with two or more regressors increases the computations but does not alter principles. Adjustment of means by use of covariance analysis is a much under-exploited technique in its direct sense; it also offers a computationally convenient way of handling missing observations and related problems. An attempt is made to overcome the confusions of interpretation between the regression equations of y on x and of x on y. A final section warns against misuses of correlation coefficients; the opportunities for misuse are too many for brief summary, yet such coefficients can be helpful when interpreted with care.
Controlled Environments as an Adjunct to Field Research on Lentils (Lens culinaris). V. Cultivar Responses to Above- and Below-average Temperatures during the Reproductive Period
Authors: Summerfield R. J. , Muehlbauer F. J. , Short R. W. 
Published: May 2019

SUMMARYNodulated plants of three USA cultivars of lentil (Lens culinaris) were grown in controlled environment cabinets. They were given either 20 or 80 ppm inorganic nitrogen and experienced a mean temperature of 12.3° C during the vegetative period, i.e. until 73–77 days after sowing. Factorial combinations of above- (29°/11° C) and below-average (23°/8° C) day/night temperatures were then imposed, to give four mean temperatures within the range of 16.6° to 21.1° C until reproductive maturity. Post-flowering vegetative dry-matter production and seed yields were dominated by treatment effects on the initiation and growth of branches. Warmer temperatures accelerated progress towards maturity, limited branching and restricted dry-matter production; at a mean temperature of 20° C plants were almost barren. The implications of these and previous data to lentil crop production and to the use of controlled environments in lentil breeding programmes are discussed.
Effect of Weeds on Pre-flowering Insect Infestation and Seed Yield of Cowpea (Vigna unguiculata) in a Rainforest Area of Nigeria
Authors: Ofuya Tom I. 
Published: May 2019

SUMMARYPre-flowering insect infestation of cowpea, Vigna unguiculata, was monitored in weedy and weed-free plots in 1986 and 1987 in Akure, Nigeria. Weediness generally reduced infestations of both the leafhopper, Empoasca dolichi, and the flea beatle, Ootheca mutabilis. However, seed yield was reduced in the weedy plots despite heavier pre-flowering insect populations in the plots kept weed-free.
Dry Matter, Nodulation and Nutrient Uptake in Chickpea (Cicer arietinum) as Influenced by Irrigation and Phosphorus
Authors: Parihar S. S. , Tripathi R. S. 
Published: May 2019

SUMMARYThe response of chickpea to irrigation and phosphorus was studied at Kharagpur in Eastern India. Irrigation scheduling was based on the ratio between irrigation water applied and cumulative pan evaporation (ID/CPE), and had little effect on dry matter accumulation. Increasing the frequency and amount of irrigation reduced the number and dry weight of nodules per plant, which increased to a maximum 70 days after sowing and then declined. Irrigation significantly reduced grain yield as a result of excessive vegetative growth at the expense of pod formation. Application of phosphorus promoted nodulation and increased both nodule dry weight and the concentration of N, P and K in grain and stover. Uptake of N, P and K by the crop was also increased.
Studies on Maize (Zea mays) at Bunda, Malawi. I. Yield in Relation to Rainfall
Authors: MacColl D. 
Published: May 2019

SUMMARYYields of maize were determined in six years, on two soils, at up to four nitrogen levels following early and late planting. Without fertilizer nitrogen, high rainfall at the beginning of the growing season reduced yield on one soil but not on the other, while high rainfall at late silking and high total rainfall in the growing season reduced yields on both soils. As the level of fertilizer nitrogen increased, the negative effects of rainfall on yield tended to disappear. A three week delay in planting sometimes increased and sometimes decreased yield. The probable reasons for the observed effects of rainfall on yield are discussed.
Genotypic Differences in Root and Shoot Growth of Barley (Hordeum vulgare). I. Glasshouse Studies of Young Plants and Effects of Rooting Medium
Authors: Wahbi A. , Gregory P. J. 
Published: May 2019

SUMMARYSeedlings of 48 genotypes of barley were grown in a glasshouse in different rooting media to determine the possible range of variation in root and shoot systems. Plants grown in nutrient solution produced shoots which were larger than those grown in sand and perlite, but in sand and perlite almost twice as much root length was produced per unit of shoot area. There were large differences between genotypes in both root and shoot growth.The effects of growing medium on rooting were studied in more detail on six of the genotypes. Plants grown in soil and nutrient solution had longer lateral roots than those grown in sand and perlite. Genotypic variation in growth was large but the range of root and shoot growth in a particular medium was similar. Generally, the ranking of the genotypes was similar in both studies and in all media.
Genotypic Differences in Root and Shoot Growth of Barley (Hordeum vulgare). II. Field Studies of Growth and Water Use of Crops Grown in Northern Syria
Authors: Wahbi A. , Gregory P. J. 
Published: May 2019

SUMMARYFive genotypes of barley (Arabic Abiad, Beecher, Cytris, Rihane ‘S’ and Swanneck) were grown under rainfed conditions at Breda and Ghrerife in northern Syria. During the winter, rates of shoot growth were similar at both sites but by anthesis crops at Breda were almost twice as large as crops at Ghrerife. Overall, Arabic Abiad was heavier and had a greater green area than other genotypes at both stem elongation and anthesis and, by maturity, had the greatest shoot dry mass and grain yield.Differences in root dry mass between sites were small so that crops at Ghrerife had a higher ratio of root:total plant mass at anthesis and maturity than those at Breda. Rooting depth was shallower at Ghrerife but root length densities in the layers below 15 cm were greater than at Breda. Arabic Abiad had the longest root system below 15 cm at both sites. The genotypes did not differ in total seasonal water use at either site but there were differences in the patterns of water use during the early spring. Arabic Abiad used more water below 15 cm in the period from mid-February to mid-March and less during grain-filling than other genotypes.The greater yields of Arabic Abiad may be associated with the greater root lengths below 15 cm and the correspondingly faster rates of water use during early spring. Yields of barley were greater when more water was used before anthesis; there appeared to be no advantages in saving water for use during grain-filling in this region.
Effects of Spacing and Lopping on a Mesquite (Prosopis juliflora)–Karnal Grass (Leptochloa fusca) Agroforestry System on an Alkaline Soil
Authors: Singh Gurbachan , Abrol I. P. , Cheema S. S. 
Published: May 2019

SUMMARYThe effects of spacing and lopping on a mesquite (Prosopis juliflora) and Karnal grass (Leptochloa fusca) agroforestry system on an alkaline soil at Karnal in India was examined over a three year period from planting. There were no significant differences in the height and diameter of the mesquite or in the number of branches at different spacings, but growth was significantly improved by lopping. The oven dried biomass obtained from lopped branches over a 40 month period was greatest at a 2 × 2 m spacing. The green forage yield of Karnal grass was greatest under mesquite spaced 4 × 4 m apart and was markedly improved under lopped mesquite. The inorganic composition of the Karnal grass, including trace elements, made it a valuable fodder in an area with an adverse alkaline soil environment. The calcium and potassium content of the grass increased and the sodium content decreased in successive cuttings. Mesquite and Karnal grass grown together reduced soil pH and EC and improved the organic carbon and available nitrogen content of the soil.
Effects of Planting on Different Sides of the Ridge on Emergence, Plant Growth, Yield and Quality of Potato (Solanum tuberosum) in the Sudan
Authors: Ali A. M. 
Published: May 2019

SUMMARYThe effects of planting potato tubers on four different sides of two ridge orientations was investigated. Soil temperature was coolest on the northern side, followed by the western, eastern and southern sides. Fifty percent emergence took place in 24, 42 and 49 days for tubers planted on the northern, western and eastern sides, respectively. Only 22% of tubers planted on the southern side emerged. The best yield and quality was obtained by planting on the northern side, followed successively by the eastern, western and southern sides of the ridge.
A Hierarchical Classification of Farm Systems
Authors: Fresco L. O. , Westphal E. 
Published: May 2019

SummaryA framework is proposed for the classification of farm systems, which are defined as decisionmaking units comprising farm household, cropping and livestock systems that transform land, capital and labour into products for consumption and sale. Two general principles underlying the classification are outlined. First, since farm systems are embedded in a hierarchical structure, the classification is based on the characteristics of the underlying systems and their interactions. Secondly, ecological factors, i.e. physical and biological parameters, are the primary determinants of farm systems. Changes in farm systems, at least in the foreseeable future, depend on the development of socio-economic variables. The classification is summarized in a set of comprehensive tables.L. O. Fresco y E. Westphal: Una clasificación jerárquica de sistemas agrícolas
Was this in your Statistics Textbook? III. Design and Analysis
Authors: Finney D.J. 
Published: May 2019

SummaryThat experimental design is fundamentally more important than the formal analysis of variance of results is emphasized. Attention is drawn to the many weaknesses of split plot designs, and the case for adopting other types of confounding whenever possible is stated. Split plots are sometimes necessary but rarely desirable. The need for randomization is stressed, with a warning against abandoning this principle before fully considering the dangers. The error in analysing repeated observations as though they are from split plots is discussed at length. After brief comment on variance heterogeneity, a final section looks at how measures of the precision of treatment means should be presented. The two main points made are that standard errors of treatment means should always be included in tables of results, and that existing multiple range significance test procedures have little or no practical utility.
Growth of Soyabean (Glycine Max) and Mungbean (Vigna Radiata) in the Post-Monsoon Season after Upland Rice
Authors: Shepherd K. D. , Gregory P.J , Woodhead T. , Pandey R. K. , Magbujos E. C. 
Published: May 2019

SummaryShoot and root growth and soil water depletion were studied in mungbean and soyabean grown at three plant populations after non-flooded rice (Oryza sativa) during the post-monsoon dry season in the Philippines. The site had a shallow fluctuating water table (1-2 m) but rooting depth was restricted to 0.8 m by a volcanic tuff layer. Soyabean had a longer duration (89 days) than mungbean (68 days) and intercepted more solar radiation, but from 61 days after sowing was severely stressed and accumulated little dry matter. Mungbean avoided severe water stress due to its short duration. Despite this stress, grain yield (1.0 t ha-1) was similar for the two species and soyabean yielded more grain nitrogen but less straw nitrogen than mungbean. Higher plant population achieved by narrower row spacing increased cumulative light interception and both grain and forage yields in both crops.K. D. Shepherd, P. J. Gregory, T. Woodhead, R. K. Pandey y E. C Magbujos: Crecimiento de la soja (Glycine max) y del frijol mungo ("Vigna radiata) en la estacidn post-monz6n despuis del arroz de secano.
Physiological Characteristics for Cassava Selection
Authors: Cock James H. , El-Sharkawy Mabrouk A. 
Published: May 2019

SummaryBreeding for high and stable yields is a major objective for cassava breeding programmes. Owing to the simultaneous formation of steins and leaves (source) and storage roots (sink), competition for assimilates implies that there is an optimum leaf area index for yield. This has led to the use of the harvest index as a practical criterion for selection. The optimal harvest index and leaf area index are discussed for selection for stressful environments. A successful strategy for developing high yielding varieties for favourable conditions is presented. Recent information has shown that selection for a slightly larger than optimal leaf area index, and hence greater biomass, can lead to stable yield in both favourable and stressful environments. Moreover, yield levels can be increased by selecting for moderate harvest indices (e.g. 0.5-0.65) and increased biomass. Longer leaf life is an integral part of this selection strategy. These concepts are discussed in detail.James H. Cock y Mabrouk A. El-Sharkawy: Caracteristicas fisiológicas para la selección de la mandioca.
The Storage of Tropical Root and Tuber Cropscassava, Yam and Edible Aroids
Authors: Cooke R. D. , Rickard J. E. , Thompson A. K. 
Published: May 2019

SummaryRoot and tuber crops make a major contribution to the food supply in many developing countries. Most of the relatively limited research effort on tropical root crops has focussed on improved production technologies, especially with regard to genetic improvement. Interest in post-harvest technologies and crop use has increased recently with the growing recognition of their importance in the marketing of these perishable crops. This paper reviews recent advances in storage research for three of the principal root crops: cassava (Manihot esculenta C), yam (Dioscorea spp.) and the edible aroids (Colocasia spp.).R. D. Cooke, J. E. Rickard y A. K. Thompson: El almacenamiento de tubérculos tropicales -
mandioca, ôame y aráceas comestibles.
Status and Contract in the Employment Relationship
Authors: Raday Frances 
Published: May 2019

There is evidence, in some recent legal thinking on the employment contract, of a readiness to abandon classical contract principles. This phenomenon is especially apparent in the formulation of the Employment Contract Bill, 1985. In this article, I shall examine this development in the framework of an analysis of the employment relationship and the extent to which it is to be regarded as a contractual relationship, both under differing theoretical approaches and under existing labour law principles.The contemporary employment relationship emerges from a contractual undertaking between individuals to exchange wages for services, but its social significance is not limited to the issues raised by the terms of the contract.
The Taba Award of 29 September 1988
Authors: Bowett D.W. 
Published: May 2019

This was an important award because it concerned the implementation of the Treaty of Peace of March 1979 between Israel and Egypt. Israel's obligation to withdraw “behind the international boundary” could not be implemented to the satisfaction of both parties so long as there existed a disagreement over the location of that boundary.The Joint Commission established pursuant to Article IV of the Peace Treaty, a body of military personnel, finally identified some 14 boundary pillars the location of which remained disputed. And, since Article VII of the Peace Treaty required reference to conciliation or arbitration of disputes not resolved by negotiations, the dispute over the location of these boundary pillars was referred to arbitration by the Compromis of 11 September 1986.
Introduction
Authors: Gur-Arye Miriam 
Published: May 2019

This issue of the Israel Law Review is devoted to a written academic symposium on the Report of the Commission of Inquiry into the Methods of Investigation of the General Security Service (GSS) Regarding Hostile Terrorist Activity (the “Landau Report”). The Commission was established in May, 1987 to investigate GSS interrogation practices and to reach legal conclusions concerning them. The need to establish the Commission followed revelations of activity within the GSS which was prima facie unlawful.The Report discusses a dilemma fundamental to any democratic state forced to cope with hostile terrorist activity (HTA): the dilemma “between the vital need to preserve the very existence of the State and its citizens, and [the need] to maintain its character as a law-abiding State which believes in basic moral principles” (R., 77). The only solution to that dilemma, according to the Report, requires that the “law itself … ensure a proper framework for the activity of the GSS regarding Hostile Terrorist Activity” (R., 79).