Scientific paper:Gravitational Propulsion by Help of Vacuum Holes

Authors: Constantin Leshan

Abstract: A new concept, the gravitational propulsion, or “Hole Levitation”, is proposed which propels vehicle by using the artificial gravity (vacuum holes). Such gravitational propulsion is similar to gravitational slingshot but without the need for large masses like planets and complicate maneuvers. The source of artificial gravitation accelerates the vehicle in one direction and the surrounding medium in the opposite direction. Therefore, it is not a reactionless drive: momentum is taken from the surrounding stars and planets and conferred on the vehicle and thus is conserved overall. The artificial gravity generator can damp or neutralize inertial forces due to the levitating vehicle is able to move with large acceleration, which is not acceptable for other means of transport.

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Keywords: Artificial Gravity, Vacuum Holes, Gravity Control, Levitation, Inertia

If you like, you can read this scientific paper in American Journal of Modern Physics.

Scientific article:Maternal and Infant Factors Associated with Child Growth in the First Year of Life

251Authors: Mahama Saaka*, Irene Abaah

Abstract: Aim: To assess the predictors associated with infant length-for-age Z-score (LAZ) in the first year of life. This paper presents the relative contribution of maternal and child factors to child growth among children aged 6-12 months in an urban area of Northern Region of Ghana. Methods:This was a retrospective cohort study design in which systematic random sampling technique was used to select study participants, who sought post natal care services in selected hospitals within Tamale Metropolis. The association between LAZ and explanatory variables (maternal height, birth weight, infant and child feeding practices) was assessed using both bivariate and multiple linear regression analyses. Results: The mean age of the children was 8.6±1.9 months and 53.8 % were in the 6-8 months age group. The mean dietary diversity score (DDS) was 4.18±1.69 for children aged 6-12 months. Nearly 70.0 % of the children had adequate meal frequency, 73.0 % met the minimum dietary diversity (≥ 4 food groups) and 57.5 % of the children met the minimum acceptable diet. The greatest predictors of mean LAZ were maternal height, low birth weight (LBW), whether child is wasted or not and the consumption of specific foods groups by the child. A 1-unit increase in weight for length z-score (WLZ) was associated with 0.156 decrease in length for age z-score (LAZ) [beta = -0.156 (95% CI: -0.26, -0.03)] among infants 6 to 8 months of age after controlling for LBW and maternal height. Among children 9-12 months, a unit increase in weight for length z-score (WLZ) was associated with 0.182 decrease in length for age z-score (LAZ) [beta = -0.182 (95% CI: -0.32, -0.04)]. The nature and strength of association between LBW and mean LAZ was different according to the age group of the child. Among children aged 6-8 months, the mean LAZ of LBW children were significantly higher than that of children whose birth weight was normal. For children aged 9-12 months, LBW children had lower mean LAZ compared to children with birth weight of at least 2.5 kg (beta coefficient = -0.320, p < 0.001). Conclusion: In conclusion, the effect of birth weight and maternal height on LAZ depended on the age of the child. The data do suggest that between the ages of 6-8 months, LBW babies may be growing faster in length than non-LBW babies. However, from 9-12 months non-LBW babies grow faster than LBW babies.

Keywords: Child Growth, Maternal Height, Low Birth Weight, Intrauterine Growth Restriction, Northern Ghana

Read this scientific article in Science Journal of Public Health:

Clinical Manifestations and Pathophysiology of Sarcopenia


Mitsutaka Yakabe, Sumito Ogawa*, Masahiro Akishita

Department of Geriatric Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan

Abstract: Sarcopenia is an age-related condition characterized by low muscle mass and low physical performance. Several groups have established diagnostic criteria for sarcopenia, which include usual gait speed, skeletal muscle mass and grip strength. In this article, we summarize these criteria, pathogenesis, epidemiology, related conditions and possible interventions for sarcopenia.

Keywords: Sarcopenia, Frailty, Vitamin D, Testosterone, Nutrition, Inflammation


Sarcopenia is characterized by loss of muscle mass, strength and function. This debilitating condition is common in the elderly and results in frailty, disability 1, and high mortality 2. The number of elderly population with sarcopenia is increasing all over the world, and it is becoming an important public concern 3.

The word “sarcopenia” is derived from Greek sarx(flesh) and penia’ (loss). This term was first proposed by Rosenberg in 1988, originally indicating muscle mass loss caused by aging 4. The range of muscle decrease included in sarcopenia was controversial, and there was no conclusive definition of sarcopenia. In 2010, European Working Group on Sarcopenia in Older People (EWGSOP) defined sarcopenia as “a syndrome characterized by progressive and generalized loss of skeletal muscle mass and strength with a risk of adverse outcomes such as physical disability, poor quality of life and death” 5. Then sarcopenia have gradually come to be known to clinicians and researchers.

This scientific paper published in journal RNA and Transcription, if you like, you can read full scientific paper in SciencePG for free.

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CubeSail Displaced Orbit Design for Near Earth Object Observation

Authors:Yang Yang1, Xiaokui Yue1, Yong Li3, Andrew G. Dempster2, Chris. Rizos3

Abstract: Microsatellites known as “CubeSats” have recently been developed to enable comparatively inexpensive and timely access to space for small payloads. As a new standard for small satellites, the CubeSat has shown great promise for space applications such as earth observation, planetary science and space physics mission. In this paper a “CubeSail” mission – a CubeSat deployed with a solar sail –for near earth object (NEO) observation is introduced. It is important to observe a NEO which may intersect or pass close toearth space before instigating any procedure for hazard avoidance. Furthermore, close observation of NEO may also be important for exploiting the new resources and exploring new living environment in outer space. This paper describes the concept of a large numbers of CubeSails deployed in the vicinity of the NEO for observation purposes. The dynamic model of the NEO-centreddis placed orbit in space is analysed. The solar radiation pressure on the sail can be utilised as propulsion to compensate for third body gravitational perturbation. To maintain the relative motion/position between a CubeSail and the NEO, periodic initial conditions are searched, which also must satisfy some observation mission constraints. A simulation study is carried out using the near earth asteroid Apophis 99942, discovered in recent years.

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Keywords: CubeSail, Multi-Object Global Optimisation, Relative Motion, Apophis 99942

Read full scientific papers in American Journal of Aerospace Engineering:

Analyzing Risks Related to the Use of Pesticides in Vegetable Gardens in Burkina Faso


Rayim Wendé Alice Naré, Laboratoire Sol-Eau-Plante. Institut de l’Environnement et de Recherches Agricoles (INERA), ouagadougou, Burkina Faso


Paul Windinpsidi Savadogo, Laboratoire Sol-Eau-Plante. Institut de l’Environnement et de Recherches Agricoles (INERA), ouagadougou, Burkina Faso


Zacharia Gnankambary, Laboratoire Sol-Eau-Plante. Institut de l’Environnement et de Recherches Agricoles (INERA), ouagadougou, Burkina Faso


Hassan Bismarck Nacro, Laboratoire d’Etude et de Recherche sur la Fertilité des Sols (LERF), Université Polytechnique de Bobo Dioulasso (UPB), Bobo Dioulasso, Burkina Faso


Michel Papaoba Sedogo, Laboratoire Sol-Eau-Plante. Institut de l’Environnement et de Recherches Agricoles (INERA), ouagadougou, Burkina Faso

In West Africa, the uncontrolled use of pesticides by vegetable farmers leads to contamination of soils as well as surface and ground water. Farmers also use various sources of organic amendments which could impact the fate of the pesticides in soils. This study was conducted to identify the type of pesticides and organic amendments used in the main vegetable gardens in Ouagadougou, Ouahigouya and Bobo-Dioulasso three cities of Burkina Faso. Farmers were interviewed individually on their practices regarding organic amendments and pesticides. Sixty one percent (61%) of farmers do not know the instruction regarding the application of pesticides. Fifty three percent (53%) of farmers did never receive training on pesticide application. We found that pyrethroid-based insecticides like lambda-cyhalothrin and delthametrin were the most used by farmers. About 69%, 59% and 100% of the farmers apply the pesticides periodically in their fields respectively in Ouagadougou, Ouahigouya and Bobo-Dioulasso. All the farmers interviewed attested that they do not respect the recommended doses of pesticides. Manure was the organic amendment mostly used in the three cities (41-75%), followed by household garbage (15-41%). In Ouagadougou most of farmers (69%) apply organic amendment at the recommended rate or more while in Bobo-Dioulasso (69%) and in Ouahigouya (57%), the majority apply low rates. There is a correlation between the social status (sex and the education level) and the pesticide and organic amendment management.

Soil, Pesticides, Organic Amendment, Environment Pollution, Burkina Faso

If you like, you can read full scientific paper for free in Agriculture, Forestry and Fisheries.

Event Tree as a Classification Model

Authors: Jelena Djurovic, Danica Brzic, Tatjana Kaludjerovic Radoicic

Abstract: In this paper event tree model as qualitative support method was used. This is applied to fault tree analysis. Transfer and transformation facts and rules for problem solving were described. Method for knowledge extraction was presented. Mechanism of decision making and conclusions was implemented. Faults detection and classification were examined. That is significant for isolating all types of hazard and take appropriate steps to reduce and control these hazards.

Keywords: Fault Tree, Cause-Consequence, Classification, Rules Modeling, Acquisition

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If it goes back to the chief tasks of safety analysis methods can be placed in four groups, two relating to the identification of problems and two to their assessment. All formal methods can be considered as combinations of two methods, cause-consequence analysis, a combination of incident sequence analysis and fault tree analysis [1]-[5].

In the design of a new plant, they should come in at the detailed safety design phase, when most of the Piping and instrumentation diagram (PID) are ready [6]-[9]. These methods are also useful in the inspection of plants already built and on stream. The methods from this class incident sequence analysis and fault tree analysis examine links between faults, represent them graphically, and can assign probabilities to them. Incident sequence analysis starts with a single fault, and observes how it may develop. The working hypothesis is that every safety measure can succeed or fail with a certain probability.

The design and construction of safe plants calls for a highly structured and organized procedure clearly setting forth what has to be done by whom and in what way, and focusing on the creation and routing of documents. This is called a safety management system.

Knowledge bases can be understand as a special case decision support systems and the other hand knowledge bases present new stage in development evaluation step of information technologies. Knowledge base is the basic element of the expert system. Expression expert system is very often applied to program which use knowledge for behavior man-expert simulation, or whose function has some attributes man–expert behavior [1], [2]. It has power to learn from experience, general knowledge achievement, reconceptualization, analogy resonable, transfer knowledge from one domain to the other, flexibility and changeable approach for problem solution. Behind these, expert selecting alternative solutions, explaining its diagnosis as well as to learn from previously experiences adding knowledge base new elements which achieving during the problem solution [3],[4],[10].

Basic difference between expert systems and classical programs is that expert systems manipulate with knowledge and classical programs manipulate with data. Expert system has ability to solve complex problem which including uncertainty by information processing.

In this paper knowledge building for problem recognition and solving was developed.

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The Bulgarian Composer Pancho Vladigerov – Psychological Origin of His Creative Personality

e77453c239fc55e5fe7247ca7c9f56e7Authors: Krasimira Georgieva Fileva-Ruseva

Abstract: Pancho Vladigerov (1899-1978) is one of the most prominent Bulgarian composers. He has created 70 opuses of works with high aesthetic value and in a very extended range of genres. His works are performed all over the world, and every Bulgarian pianist has experienced his piano opuses. In the present study, I reveal the psychological prerequisites for his creative personality in the following order: typological characterization – evidence to classify the composer in a certain type, derived from his everyday life, from his performer’s and pedagogical work and backed up by statements of his relatives, students and critics – the influence of the stated typological characterization on his artistic handwriting.

Keywords: Composer, Work, Opus, Pancho Vladigerov, Bulgarian Music

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Pancho Vladigerov (1899-1978) is one of the most prominent Bulgarian composers. He has created 70 opuses of compositions with high aesthetic value and in a very extended range of genres (among his works are: five concertos for piano and orchestra, two concertos for violin and orchestra; Concerto Fantasy for Violoncello and Orchestra, op. 35; the ballet “Legend of the Lake”; the opera “Tzar Kaloyan”, “Symphonic Legend for Large Orchestra”, op. 8, Symphony № 1, op. 33; Symphony № 2, “May symphony for String Orchestra”, op. 44; the Heroic overture “The Ninth of September” for large orchestra, op. 45; the concert overture “Earth”, op. 27; “Jewish Poem”, op. 47; the dramatic poem “Song for Peace” for symphonic orchestra, op. 52; the symphonic suite for large orchestra “Lyulin Impressions”, op. 63; orchestra suites, theatre music, works for chamber ensembles, solo opuses). Vladigerov is one of the founders of the Bulgarian national musical style and the native school of composers; a virtuoso pianist and conductor, who performed on stage in many European countries and left a significant trace in the cultural life of several European capitals. His works are performed all over the world, and every Bulgarian pianist has experienced his piano opuses. In the present study, I reveal the psychological prerequisites for his creative personality in the following order: typological characterization – evidence to classify the composer in a certain type, derived from his everyday life, from his performer’s and pedagogical activity and backed up by statements of his relatives, students and critics – the influence of the stated typological characterization on his artistic handwriting. Admittedly, I do not deny that artistic preferences have a very important and irrevocable role in the formation of an author’s style, but for the formation of the specific aesthetic inclinations and preferences, apart from social conditions, which are not the subject of the present study, the psychological characteristics of the creator are also of importance.

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Illusion in Edward Albee Selected Play “Who’s Afraid of Virginia Woolf”

Authors: Susan Raheem Rahman Jaf1, 2, Zenaa Salim Hammoudi2, Zhang Zaihong1

Abstract: Edward Albee’s Who’s Afraid of Virginia Woolf? Exposes the plunge of moral values of the American family in the modern society in which materialism is Victorious. The play shows the deceptive appearances and moral disintegration of George and Martha. This paper attempts to outline the American dream and how the characters accept illusion as an escape from real life. The initial part provides us withsome information about the writer’s life and how he is influenced by the theater of the absurd, and the impact of the psychological approaches on Albee’s way of writing .The paper also proposes Albee as a modern playwright to recall and explain the community problems that help modern readers to understand his crises and his tragedy form. Superficially, the play seems to be about the illusion but in fact it examines and presents crises of the modern American values and their way of life. Thus, the play discloses the theme of illusion and social American crises through the bond of marriage of the two couples.

Keywords: Illusion, Social Crises, American Dream, Marriage, Psyche of Absurdity

Albee and the Absurd Theater

Edward Albee (1928- ) is one of theimportant writers in 20th century American drama. He becomes an orphan at an early age. He had miserable life with his adoptive parents. Albee found it difficult to relate to them, therefore he never felt at ease with them, especially with his domineering (step) mother. Being an adopted child of a harsh woman had negative effect on the psyche of the writer. Albee’s rootless life always troubled him and the question of who he was, where he was from and to which family he belonged intensified his dissatisfaction with life and increased his crisis.

Albee was dismissed from two private schools and even rejected by Trinity College in Harford. He had never seen his father or met his mother for 17 years. It is only later in life through his love to the theatre and arts that Albee enjoyed success. His wealth and social status came from his involvement in the national circle of the theater. In spite of his interest in the drama and the theatre his adoptive parents pushed him to pursue more conventional career, but he refused to comply with their wish and followed his own artistic ambition. His final decision to leave his family forever came at the age of 20. After a long mission in his miserable life, he finally could find the way to prove his talent in writing and become a famous writer.

At the age of 30 his major work TheZoo Story (1958) brought him his international reputation after being staged in Berlin, Germany in 1959. Within a few years Albee brought the absurdist to American stage for the first time with his works, The Sand box (1959), The American Dream (1960)and Who’safraid of Virginia Woof(1961).

Who’s Afraid of Virginia Woolf was the first Broadway production of the writer which achieved great success and brought him Tony Award and pantheon of American criticism like Eugene O’Neill and Arthur Miller. Albee for many years was unable to duplicate the success of this play though he tried to stage different plays with varied themes such as All Over (1971), The Season Escape (1974) and many other literary works( kucuk 2008:1-3).

As a tragedy writer influenced by the modern absurd drama, Albee was listed among such absurdist dramatists as Eugene Ionesco, Harold Pinter and Samuel Backett who were considered as the founders of absurd drama. Albee adopted the methods of the absurd theatre and established his own unique literary style.

Theater of the absurd has become one of the most important phenomena in the history of literature especially drama at the modern age. In fact, the word “absurd” refers to a specific type of play which flourished in the mid-20th century and which was borrowed from, the French philosopher, Albert Campus’ essay The myth of Sisyphus (1942) in which he detonated the human condition as essentially meaningless. Camus proved that humanity had to emerge itself to understand that a fully satisfying rational world was behind its reach; in that case, the universe ultimately should be absurd. After its appearance in the 1950s in France, it has revolutionized all the concepts of the common understanding of the theater and played a vital role in the development of drama. Modern people surrounded by unreal life pushed the critics to use a different language with disingenuous expressions in the works of theater. All the writers of the absurd share the same themes and writing styles while combining his own techniques in it, especially after the Second World War when European countries lost their faith in religion and their dreams for a better life. Compared with the life in United States, the situation in Europe was totally different from what was happening in the United States because “… there has been no corresponding loss of meaning and purpose. The American dream of the good life … [was] still very strong. Their belief in progress… has been maintained into the middle of the twentieth [century]” (Esslin 1961:225). As a result, it was difficult to find many absurd plays in America asthere were in Europe. Albee is one of those who established the absurd theater in America as he “attacks the very foundation of American optimism”. (Ibid) As a result, he is considered as one of the writers who follow cyclical pattern of the absurd to establish the modern American Theater.

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The Biology of Prolotherapy and Its Application in Clinical Cervical Spine Instability and Chronic Neck Pain: A Retrospective Study

Authors information:

Ross A. Hauser1, Danielle Steilen1, Karina Gordin2, *

1Caring Medical & Rehabilitation Services, Oak Park, IL, USA

2HealthWright, Wayland, MA, USA


Background: In an effort to facilitate the diagnosis and treatment of clinical cervical spine instability (CCSI) and chronic neck pain, we investigated the role of proliferative injection Prolotherapy in the reduction of pain and recovery of constitutional and neurological symptoms associated with increased intervertebral motion, structural deformity and irritation of nerve roots. Methods: For this retrospective case series, 21 study participants were selected from patients seen for the primary complaint of cervicalgia. Following a series of proliferative injections, performed in a private sub-specialty pain clinic, patient-reported assessments were measured using questionnaire data, including range of motion (ROM), crunching, stiffness, pain level, numbness, and exercise ability, between 1 and 39 months post-treatment (mean = 24 months). All patients signed a consent form prior to treatment.  Results: 95 percent of patients reported that Prolotherapy met their expectations in regards to pain relief and functionality. Significant reductions in pain at rest, during normal activity, and during exercise were reported. A mean of 86 percent of patients reported overall sustained improvement, while 33 percent reported complete functional recovery. 31 percent of patients reported complete relief of all recorded symptoms. No adverse events were reported. Conclusion: The results of this study demonstrate statistically significant reductions in pain and functionality, indicating the safety and viability of Prolotherapy for cervical spine instability. Such clinical efficacy of this procedure warrants further investigation as a non-invasive treatment option.

Keywords: Atlanto-Axial Joint, Barré-Liéou Syndrome, Cervicalgia, Cervical Instability, Facet Joint Injury, Manual Therapy, Posterior Cervical Sympathetic Syndrome, Prolotherapy

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The Difference Factors Influencing the Chinese and Foreign Creative Fashion Design Talent Cultivation and Contrast Analysis

502 (1)Authors: Yating Zhang, Hongjian Qu
Clothing Institute, Shanghai university of Engineering and Technology, Shanghai, China
Abstract: This paper summarizes 11 possible difference factors affecting domestic and foreign creative fashion design talent training through an extensive literature review, and extracts three common factors by the R-type factor analysis. Finally, picking up the University of Edinburgh with first-class School of Design and the domestic Donghua University with excellent clothing major for example, and providing improvement direction for Chinese creative costume design talent training.
Keywords: The Chinese and Foreign Creative Fashion Design, Talent Cultivation, Different Factors, Comparative Analysis


With the rapid development of economy and technology, as well as the deepening of economic globalization, the creative industries have been the core of the industry’s economic growth and the important factors of measuring international competitiveness. As part of the creative industries, the development of creative fashion design lies in the promotion of talents. Currently, the international influence of our clothing brands isn’t high,and brand imitation seriously , especially children’s wear. Moreover, the training model of excellent designers is single , and teaching exists some errors, also irrational structure of teachers and single teaching methods and other malpractices. With the advent of the personalized era, clothing consumer brand awareness has enhanced, and increasingly demanding for all aspects of clothing. In the face of strong international brands attack, China want to complete the shift of”big clothing country” to “powerful clothing country” , which needs a batch of professional creative fashion design talents to build counter market, and win high efficiency. From the literature consulted , which are mostly from the status of fashion design talents to explore teaching strategies. This paper, from international perspective,analyzes the difference factors affecting Chinese and foreign creative fashion design talent training, providing improved direction for Chinese creative fashion design talent training.

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