Complex evaluation of contracts for construction

The effectiveness of construction processes largely depends on the effective contract preparation. To draw an effective contract for construction, the methods of assessment and comparison of these types of contract should be developed. In recent years, multicriteria methods have been widely used for evaluating various complex phenomena. The development of construction evaluation methods requires the analysis of construction technology and organization, as well as economic factors and legal aspects of contracting in construction. In the present investigation, the criteria describing contracts for construction from various perspectives are determined based on the estimates elicited from experts. The weights of nine criteria used in complex evaluation of construction contracts are determined based on the use of the AHP method. The consistency of expert estimates is also assessed. Using multicriteria evaluation methods, construction contracts are compared and the best alternative is determined. Santrauka Didele reikšme statybos proceso efektyvumui turi tinkamas statybos rangos sutarties sudarymas. Siekiant sudaryti efektyvias statybos rangos sutartis, reikia sukurti rangos sutarčiu ivertinimo ir palyginimo metodikas. Pastaruoju metu sudetingiems procesams vertinti plačiai taikomi daugiakriteriniai vertinimo metodai. Ju vertinimas priklauso nuo rodikliu, charakterizuojančiu procesa, ir ju reikšmingumo. Siekiant parengti statybos vertinimo metodikas, reikia išnagrineti ne tik techninius, organizacinius, ekonominius, bet ir teisinius statybos rangos sutarties aspektus. Taikant ekspertu vertinimus, buvo nustatyti rodikliai, charakterizuojantys statybos rangos sutarties turini. Kompleksiškai ivertinant statybos rangos sutartis AHP metodu nustatyti devyniu rodikliu svoriai, ivertintas ekspertu nuomoniu suderinamumas. Taikant daugia‐kriterinius metodus tarpusavyje palygintos statybos rangos sutartys ir nustatytas geriausias variantas. First Published Online: 24 Jun 2011 Reikšminiai žodžiai: statybos ranga, daugiakriterinis vertinimas, rodiklis, AHP metodas, ekspertu vertinimas, suderinamuma

Quality and Safety Aspects of Infant Nutrition

Quality and safety aspects of infant nutrition are of key importance for child health, but oftentimes they do not get much attention by health care professionals whose interest tends to focus on functional benefits of early nutrition. Unbalanced diets and harmful food components induce particularly high risks for untoward effects in infants because of their rapid growth, high nutrient needs, and their typical dependence on only one or few foods during the first months of life. The concepts, standards and practices that relate to infant food quality and safety were discussed at a scientific workshop organized by the Child Health Foundation and the Early Nutrition Academy jointly with the European Society for Paediatric Gastroenterology, Hepatology and Nutrition, and a summary is provided here. The participants reviewed past and current issues on quality and safety, the role of different stakeholders, and recommendations to avert future issues. It was concluded that a high level of quality and safety is currently achieved, but this is no reason for complacency. The food industry carries the primary responsibility for the safety and suitability of their products, including the quality of composition, raw materials and production processes. Introduction of new or modified products should be preceded by a thorough science based review of suitability and safety by an independent authority. Food safety events should be managed on an international basis. Global collaboration of food producers, food-safety authorities, paediatricians and scientists is needed to efficiently exchange information and to best protect public health. Copyright (C) 2012 S. Karger AG, Base

Understanding the retinal basis of vision across species

The vertebrate retina first evolved some 500 million years ago in ancestral marine chordates. Since then, the eyes of different species have been tuned to best support their unique visuoecological lifestyles. Visual specializations in eye designs, large-scale inhomogeneities across the retinal surface and local circuit motifs mean that all species' retinas are unique. Computational theories, such as the efficient coding hypothesis, have come a long way towards an explanation of the basic features of retinal organization and function; however, they cannot explain the full extent of retinal diversity within and across species. To build a truly general understanding of vertebrate vision and the retina's computational purpose, it is therefore important to more quantitatively relate different species' retinal functions to their specific natural environments and behavioural requirements. Ultimately, the goal of such efforts should be to build up to a more general theory of vision

Systematic Review of Potential Health Risks Posed by Pharmaceutical, Occupational and Consumer Exposures to Metallic and Nanoscale Aluminum, Aluminum Oxides, Aluminum Hydroxide and Its Soluble Salts

Aluminum (Al) is a ubiquitous substance encountered both naturally (as the third most abundant element) and intentionally (used in water, foods, pharmaceuticals, and vaccines); it is also present in ambient and occupational airborne particulates. Existing data underscore the importance of Al physical and chemical forms in relation to its uptake, accumulation, and systemic bioavailability. The present review represents a systematic examination of the peer-reviewed literature on the adverse health effects of Al materials published since a previous critical evaluation compiled by Krewski et al. (2007). Challenges encountered in carrying out the present review reflected the experimental use of different physical and chemical Al forms, different routes of administration, and different target organs in relation to the magnitude, frequency, and duration of exposure. Wide variations in diet can result in Al intakes that are often higher than the World Health Organization provisional tolerable weekly intake (PTWI), which is based on studies with Al citrate. Comparing daily dietary Al exposures on the basis of “total Al”assumes that gastrointestinal bioavailability for all dietary Al forms is equivalent to that for Al citrate, an approach that requires validation. Current occupational exposure limits (OELs) for identical Al substances vary as much as 15-fold. The toxicity of different Al forms depends in large measure on their physical behavior and relative solubility in water. The toxicity of soluble Al forms depends upon the delivered dose of Al+ 3 to target tissues. Trivalent Al reacts with water to produce bidentate superoxide coordination spheres [Al(O2)(H2O4)+ 2 and Al(H2O)6 + 3] that after complexation with O2•−, generate Al superoxides [Al(O2•)](H2O5)]+ 2. Semireduced AlO2• radicals deplete mitochondrial Fe and promote generation of H2O2, O2 • − and OH•. Thus, it is the Al+ 3-induced formation of oxygen radicals that accounts for the oxidative damage that leads to intrinsic apoptosis. In contrast, the toxicity of the insoluble Al oxides depends primarily on their behavior as particulates. Aluminum has been held responsible for human morbidity and mortality, but there is no consistent and convincing evidence to associate the Al found in food and drinking water at the doses and chemical forms presently consumed by people living in North America and Western Europe with increased risk for Alzheimer\u27s disease (AD). Neither is there clear evidence to show use of Al-containing underarm antiperspirants or cosmetics increases the risk of AD or breast cancer. Metallic Al, its oxides, and common Al salts have not been shown to be either genotoxic or carcinogenic. Aluminum exposures during neonatal and pediatric parenteral nutrition (PN) can impair bone mineralization and delay neurological development. Adverse effects to vaccines with Al adjuvants have occurred; however, recent controlled trials found that the immunologic response to certain vaccines with Al adjuvants was no greater, and in some cases less than, that after identical vaccination without Al adjuvants. The scientific literature on the adverse health effects of Al is extensive. Health risk assessments for Al must take into account individual co-factors (e.g., age, renal function, diet, gastric pH). Conclusions from the current review point to the need for refinement of the PTWI, reduction of Al contamination in PN solutions, justification for routine addition of Al to vaccines, and harmonization of OELs for Al substances

THE IMPACT OF GLOBALIZATION TO CREATIVE INDUSTRIES: THE ANALYSIS OF FILM INDUSTRIES OF CENTRAL AND EASTERN EUROPE

This paper explores changes of the political, legal, taxation and other circumstances in film industries of Central and Eastern Europe that kick-started qualitative changes over the last decade. Research conducted by European Union (EU) on European film industry suggests that in terms of film industry Central and Eastern Europe region at this stage is generally non-competitive and not commercially orientated. We argue that the region filmmakers systematic believe in concept that film art and film business is a combination of polar opposites is a key reason that holds back industry’s potential to make a considerable economical and cultural contribution to national prosperity. First published online: 18 Dec 201

Lithuanian Comics: Unused Cultural and Educations Instrument

Straipsnyje autorius kelia hipotezę, kad stipri komiksų industrija gali tapti svarbiu elementu, efektyviai siekiant įvykdyti Lietuvos kultūros ir Švietimo ministerijų XXI amžiui iškeltus strateginius nacionalinius uždavinius. Straipsnyje pateikiamas JAV komiksų medijos diskursas ir nuodugniai analizuojama Lietuvos komiksų industrijos padėtis, atliekant kokybines ir kiekybines apklausas. Rezultatai atskleidžia, kad tarp jauniausios Lietuvos kartos de facto yra įsitvirtinusi komiksų kultūra.In this paper the author suggests that strong national comic book industry could be an important element to effectively fulfil strategies goals for Lithuanian Ministry of Culture and Ministry of Education. Article analyse the power of USA comic book to create symbolic and cultural capital, and if this effect could be repeated in Lithuania. To determine Lithuanians attitude towards national and foreign comic book products quantitate (13k people) and qualitative questionnaire survey was carried out. The survey results show that comic book culture is de facto part of Lithuanian youth