During the development of Arabidopsis and other land plants, diffusion barriers are formed in the apoplast of specialized tissues within a variety of plant organs. While the cuticle of the epidermis is the primary diffusion barrier in the shoot, the Casparian strips and suberin lamellae of the endodermis and the periderm represent the diffusion barriers in the root. Different classes of molecul...

Our research group has been investigating various aspects of graphics recognition techniques for more than ten years. We have worked on map analysis, symbol recognition, dimension analysis and the conversion of engineering drawings to CAD models. Lately, we are also conducting research on the interpretation of architectural drawings. In addition, we have built up a software platform of generic ...

Although research studies in education show that use of technology can help student learning, its use is generally affected by certain barriers. In this paper, we first identify the general barriers typically faced by K-12 schools, both in the United States as well as other countries, when integrating technology into the curriculum for instructional purposes, namely: (a) resources, (b) institut...

Background Healthcare in developing countries faces a number of challenges due to economic constraints, poor infrastructure, a shortage of trained clincial staff, extreme climate and geographical barriers among others. Information and communication technologies are seen as one approach to address these issues and improve inequalities in healthcare facing low and middle income countries. In part...

The ability of welfare-to-work clients to leave the welfare rolls and stay in the labor force is often limited by the work barriers they face. Using a sample of 1,404 female welfare-to-work clients we first examined the structure of work barriers and then tested their contribution to current work status in the context of a structural equation model that incorporated other central pathways to em...

nowadays, thousands tons of chemicals material are used to increase agricultural production that provides a risky situation for the communities. recently, biological or organic agriculture is considered to get rid of such problems. but this style of agriculture is facing with many difficulties and challenges. this study was performed in three phases by using delphi method. in this regard, the s...

In seeking to adopt, lesbians and gay men may confront various barriers and obstacles. Ideally they have access to a variety of support resources that can help to buffer the negative effects of these barriers. However, lesbians and gay men living in small-metropolitan communities may have limited access to support resources. The current qualitative study examined the perceptions of 37 same-sex ...

Many researches which were published in other countries identified certain benefits and barriers to physical activity among young people. But there is no data about the subject pertaining to Macedonian adolescents. This study tries to rectify this with a study of Macedonian adolescents. The research was realized on a sample of 847 adolescents of Macedonian nationality. Current exercise habits a...

The trend of software development has changed from local to global software development (GSD) due to advances in information and communication technologies (ICTs). Despite of the benefits gained from GSD, vendors also face challenges during the integration of components developed by global teams in isolation. The objective of the current study is to find out the list of critical challenges/barr...