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The current study aims to identify the criteria used in evaluating the performance of library workers and identify areas and aspects of benefit from them, such as the standards, in addition to identifying the indicators that resulted from the experiences of some major libraries which serve libraries since the emergence of the idea of establishing them, determining their location size and target audience until managing them and achieving the desired success The study relied on the theoretical approach, through a description of the subject of performance from all sides, using the best available sources in various ways, including books, references, articles and specialized periodicals in the field of performance and management, as well as the use of Internet sites to obtain some sources and access to reports, guides and pamphlets. as well as I dealt with the use of the presentation of the ( Damik) model as an indicator to solve the reasons for the low level of performance of the library and the study reached a set of results, the most important of which are: 1- The difference between indicators and standards is that the indicator is considered more specific and that the use of indicator is used in case the standard is difficult to use. 2- The performance indicators are characterized by credibility, validity, appropriateness, media content, and comparability. 3-there are standards specifications and performance indicators covering the field of libraries and information, including (11621), including those related to national libraries (28118) and (16439) those related to methods and procedures for evaluating the return from the library It also suggested a set of recommendations, the most important of which are: 1- The necessity of establishing specialized workshops that are specific to performance indicators and how to measure them, and to overcome the problems of declining performance indicators through professional associations (national or international) 2- The necessity of linking performance indicators with management, as the performance indicators, whether they are achieved or not, are mainly related to the administrative performance of the library. and technology to overcome it. 3- Qualified cadres should be prepared in libraries of all kinds, whose main task is to achieve highperformance indicators in these libraries. [ABSTRACT FROM AUTHOR]

The main objective of this research was to determine the degree of the quality of the performance of the residential environment in preserving human health and its suitability for home quarantine during the pandemic of the emerging Coronavirus (covid-19). The study aim was achieved by choosing a simple random sample consisting of (100 Residential Units) from some Alexandria city districts and some resident families, who were from different economic and social backgrounds. Personal interview was used and the descriptive approach was applied. The most important results were, the degree of the quality performance of the standards of the external residential environment (the health of residential location, the supply of utilities and availability of services), and internal residential environment (Meeting the family’s needs to maintain physical, psychological and social health for its members), and both of them together were medium in the rates of (70%, 69%, 69%) respectively. As for the degree of the suitability for home quarantine in accordance with the conditions of the Egyptian Ministry of Health, it was convenient in less than half of the sample (43%) of the families’ houses, which had a one or more infected members that reached (28%) of the residents sample. Most problems that faced the families during home quarantine that related to external residential environment were unhealthy residential location was (68%), and regarding the internal residential environment, they were the unavailability of a separate room for home quarantine, the unavailability of a separate bathroom and bad air quality at home (71%) for each of them, poor ventilation at home, the sunlight does not enter the quarantine place, continuous water outage (64%) for each of them, and finally the continuous unavailability of antiseptics to clean up the surfaces (61%). The most important recommendations that the research has concluded are, it is necessary to spread awareness among families of the research sample by trying to upgrade the quality of the internal environment performance to preserve the health of its members physically, psychologically and socially, and adapt it to home quarantine. Also, it is recommended to draw the attention of the officials responsible to try to upgrade the quality of the external environment performance by paving the streets and planting trees in them, especially side streets, overcoming the trash problem, improving the utilities and communications network and providing highly efficient health services. [ABSTRACT FROM AUTHOR]

Background and aims: Many people have to sit down during daily activities. The process of sitting down especially for a long time in comparison of standing up cause many back pains. Special chairs with special backs and sits are designed for offices, industries and institutes because of back pain of sitting down for a long time and increasing the performance of employees. The target of this research is also the designing of a saddle chair based on the anthropometry characteristics of people and then evaluating the conformance of this chair. Methods: A number of 178 males between 25 and 55 years in an assembling industry were cooperated and their eight anthropometry parameters according to Pheasant's criteria at the same anthropometric conditions were measured in this research. Then according to the achieved information, the saddle chair were designed and 30 people were selected randomly to use the saddle chair five hours per day for one month at the second phase. Finally, the comfort of this chair was evaluated by the questionnaire sheet. Results: The saddle chair is designed according to the design parameters; the max and min height, width, depth and width of saddle, the depth of chair identity range and the design criteria of achieved anthropometry characteristics. The evaluation of chair comfort with used quantitative scale is shown in the comfort sense of users and their satisfaction (Average is more than 7.5 of 10). Conclusion: According to the user's expression of comfort in this research and respecting to this fact that other countries have been designing and producing the proper chair according to the anthropometry characteristics consequently recommended to perform the same research on diverse parts of country. Therefore, it is suggested to design and produce the proper chair according to the body dimensions and characteristics of individuals. [ABSTRACT FROM AUTHOR]