فهرست مطالب هاجر زارعی

In the present research, the educational assistance model of parents was discussed to empower schools online. 

In terms of research orientation, the current research was among fundamental research. In terms of the method of data collection, with a qualitative approach, in this research, various dimensions of parental educational assistance were categorized using a qualitative approach, general scales. In the following, the semi-structured interview tool and the opinions of 22 experts in the field of education in Mazandaran province were used to collect data. In the 19th interview, it was found that the principle of saturation had taken place. Thematic analysis approach and Maxqda software were used for data analysis. 

Comprehensive themes extracted, educational assistance for parents to empower online education in times of crisis in 5 categories (individual empowerment, social interaction empowerment, teaching empowerment, virtual space support, support, and evaluation and supervision) and in 16 organizing themes (skills, Competencies, psychological factors, building trust, building coordination, building communication, technical ability, scientific ability, managerial ability, hardware infrastructure, software infrastructure, assessment and monitoring of students, assessment, and monitoring of parents, education of parents, Cultivation of parental educational assistance, identification of obstacles and challenges) and 88 basic themes have been determined and introduced. 

The importance of the teaching and learning process of students has become more important than before. Because empowering schools is considered one of the most necessary measures and a saving factor in the current situation, it can guarantee the success of the educational system.

The main purpose of this article is to determine the mixed elements of promotion and ranking and rating of digital libraries in Iran in terms of the use of these elements.Research Method This research is descriptive and survey and its purpose is applied. The data collection tool is a checklist (checklist) which, after conducting documentary and field studies, compiled a promotion checklist and through content validity identified the most important promotion tool of Iran's digital libraries based on criteria and identified as a statistical population in the form of a census of It is used to the point where each of the libraries is evaluated based on their score on the use of promotion components.Findings show that Tebyan Digital Library and Digital Library of Science and Information Technology of Iran have the highest rank with 44 points and Niroo Research Institute digital library has the lowest rank with 6 points using the elements of promotion. Iranian digital libraries have an average of 26.3% of the 49 mixed promotion features; Advertising agent with an average of 9.07% feature out of 14 features; The public relations factor with an average of 10.07% of the 12 features and the promotion factor with 7.09% of the 12 features in these libraries. Online advertising with an average of 0.99 has the highest rank in advertising, specialized catalogs with 0.8 points have the highest average of public relations and display of new products on the site with 0.88 has the highest score in the promotion factor. Bring a percentage next to each of these items.The results of the present study indicate the identified promotion cases and determine the promotion elements for Iran's digital libraries and examine the extent to which they use these elements; Also, this study has ranked Iran's digital libraries based on the use of mixed promotion elements so that based on these results, it can help Iranian digital library managers to make better decisions and policies regarding the identification and prioritization of appropriate promotion promotion tools. The promotion mix in the form of advertising, public relations and promotion variables is appropriately designed to ensure the success of digital libraries for greater visibility and better customer service.

Creating knowledge in the organization and transforming it depends on the skill and ability of the skilled manpower. The success of employee empowerment also depends on factors and obstacles. The present study seeks to empower librarians of Iran and Tehran University of Medical Sciences to create and transfer knowledge.

This research is one of the applied research that has been done by survey-correlation method. The study population consisted of two universities, Iran University of Medical Sciences with 76 librarians and Tehran University of Medical Sciences with 61 librarians, which totaled 137 librarians. According to Morgan's table, 104 people were selected. Data were collected randomly. Two standard questionnaires, Spritzer Empowerment (1995), and Newman & Conrad Knowledge Management (1999), were used for data collection. The Spritzer Questionnaire has five components (competence, affectivity, sense of meaning, choice, trust), and the Newman and Conrad model has four components (knowledge creation, knowledge retention, knowledge transfer and transfer, and knowledge utilization). In this study, two components of knowledge creation and knowledge transfer are considered. Descriptive and inferential statistics were used for data analysis with Pearson (for normal explanatory data) and Spearman (for nominal qualitative data) tests. Data analysis was performed using SPSS software version 23, and the impact of empowerment factors on knowledge creation and transfer of community librarians' knowledge to the structural model of Amos software was used.

Findings:

The findings of the present study indicate that there is a significant relationship between individual factors and knowledge creation. There is a significant relationship between gender and education with knowledge transfer. There is a significant relationship between group factors (sense of trust and sense of meaning) and knowledge creation and transfer. There was no significant relationship between group factors (competence, choice, and affectivity) and knowledge creation and transfer. As empowerment increases, knowledge creation and transfer among librarians increases, and empowerment decreases as knowledge creation and transfer among librarians decreases. Many factors affect empowerment, but according to the results of the present study, individual and group factors (gender, level of education, sense of trust, and meaningful feeling) had the greatest impact on empowering librarians to create and transfer knowledge.

Findings showed that there is a significant relationship between individual factors and knowledge creation. But there is no significant relationship between individual factors and knowledge transfer.

Co-word analysis is a tool to depict the intellectual structure of scientific productions. So the purpose of this study is to map the intellectual structure of research status in the field of educational management in Iran.

This applied research has been done by co-word analysis. The research population includes all original Persian scientific articles indexed in databases, named Normagz, SID, and Magiran. Examples with the four main keywords "educational management", "educational leadership", "school management" and "school leadership" along with their sub-topics and their plural and singular states based on searching for the same phrase and without applying a time limit, during the years 1988 to 2020, between 2nd and 20th of July 2020 were searched.  These keywords were selected according to "Eric Online Thesaurus", "Persian subject headings", "Congress library subject headings", "Educational management culture book" and "consensus of three professors of educational management". To collect data, first, 1066 articles were retrieved by an advanced search of selected keywords, and 891 articles remained after removing duplicate and unrelated items. In the next step, all the keywords of the articles that were under each title of the article were placed in the Excel file in one column, and the keywords in the titles of the articles were examined one by one by the researcher and after getting the final opinion from the experts in the field and they were given in the continuation of keyword column. At first, 3688 keywords including their repetitions (2221 words excluding repetitions) were obtained from the titles and keywords of the articles. After correcting the typographical and space errors that were too much due to the entry of relatively inappropriate information in Persian databases, the phase of assimilation of words began. In the next step, while checking the keywords one by one, referring to the accepted and common keywords (including 56 keywords) with the opinion of experts in the subject area of the research. Finally, a list of keywords was obtained in which all the words with semantic connections were replaced with the general keyword. A number of keywords completely unrelated to the subject area were also removed based on the opinion of subject experts in the field of educational management. Finally, the number of 2203 keywords, including their repetition, remained for further analysis. Afterwards, the researcher replaced the selected and referred keywords in the entire research data. Excel, RavaR Matrix, and UciNet software were used for data analysis and NetDraw was used to visualize the co-word network.

"Educational Management", "Educational Leadership" and "School Management" have been the most common themes in terms of co-word. In fact, these words form the main discussions related to this field. Hierarchical clustering resulted in the formation of 3 clusters in that the educational management cluster has a central and important position as a mature and developed cluster. Educational Leadership and School Management were identified as underdeveloped and emerging or declining clusters and compared to the educational management cluster, they have attracted less attention in the studies of the educational management field.

The study of the knowledge structure in the field of educational management identified the research status that can be a roadmap for future research. In the field of educational management, the issues surrounding learning leadership and school management as immature and underdeveloped clusters need more attention in future research. Therefore, if attention to these issues is placed on the agenda of the country's educational system, we will see more prosperity in the field of educational management in the future. Therefore, pushing the scientific community toward these issues and conducting research in this direction will be practical and fruitful.

The purpose of the study is to explain the hand movement ability to interact with the user interface of websites.

 This research is an applied research. The research method is qualitative. The population studied in this research is library resources including 2 books and 14 articles, which were selected and used by available sampling method until theoretical saturation. The method of data analysis using source analysis is analogous to the coding method. The collected data has been analyzed with MaxQDA software. 

Based on the findings, 18 features and 3 basic concepts were extracted from the analysis of 9 propositions. Individual concept (7 features of ease of use, satisfaction, user-friendliness, low cost, tendency to use more, adaptability, psychological control), functional concept (9 features of usefulness, recognition of interaction, understanding ability, computer processing capability, performance coverage necessary for data recovery, minimal need for hardware devices, the ability to be used on the same level as interface equipment, input of movement commands, the ability to recognize hands) and the concept of support (2 features of support programs in the computer for better interaction, optimizing the relationship between processes Cognitive and physical user).

The ability to move the hand is one of the great points and the ability to interact with the user interface of websites, which is symmetrical with the eye ability to interact with the user interface of websites, it has the ability to design and study more deeply inside the country. Noticing huge capacity of information, needs of users, acceleration in getting comprehensive and useful information in Iran, effective hand mobility to interact with intermediate users of websites have always been valuable and noticeable to be designed by experts.

The present study was formulated with the aim of analyzing the structure of scientific productions in the field of educational management in Iran. The field of this quantitative study is scientometrics. The research population is all the original Persian scientific articles indexed in "Noormags", "Magiran" and Scientific Information Database (SID) from 1998 to 2020. The data are collected using a checklist. The descriptive indicators, the growth rate, the frequency distribution and relative frequency percentage are used to analyze the data by Excel. Also the Pajek software is used to draw co-authored maps, and the Bradford's law of scatter is used to determine the core journals. Some of the findings show that the most prolific writers are Mohammad Reza Behrangi and Hassan Reza Zeineabadi, and the most prolific universities are Kharazmi and Tehran universities, respectively. Nine journals are also identified as core journals, of which the journal of "School Administration" and " New Approaches in Educational Administration" are the most prolific journals. However, an important part of the findings show that the trends in scientific productions in the field of educational management has not experienced a proper growth rate during the years under review, and a kind of disorganization is so evident in the process of scientific productions in the field of educational management in Iran.

Boron neutron capture therapy (BNCT) is based on the nuclear reaction, such that B-10 irradiated with low-energy thermal neutrons produces alpha particles with high linear energy transfer and lithium-7. Clinically, BNCT is used primarily for treatment of high-grade glioma or brain metastases from melanoma and, more recently, head, neck and liver cancers. Since reactors have long been used to produce high intensity neutron beams, nuclear reactors have also been used to produce BNCT. Accelerators can also be used to generate quasi-thermal neutrons, but none of them are currently used for BNCT. Boron medications with low molecular weight used in clinic include sodium borocaptate (BSH) and a phenylalanine derivative called boronophenyl alanine (BPA). The main challenge in the development of boron tracers is the selective targeting to reach a sufficient concentration of boron (F 20 Ag / g tumor) so that the tumor receives a sufficient dose of radiation and normal tissues receive minimal radiation. Clinical trials of BNCT are being conducted or have been conducted in various countries. Most patients undergoing BNCT were patients with high-grade brain tumors. The patients underwent surgery for complete or partial removal of the tumor and then received BNCT at various time intervals after surgery. BNCT in combination with other treatments such as surgery, chemotherapy and external beam radiotherapy can also be used as an adjuvant therapy for treatment of other tumors. This concomitant use may lead to improvements in patient survival. According to clinical studies, BNCT is a targeted therapy with promising results and acceptable toxicity. Important issues in this treatment include the need for more selective and effective agents for boron delivery carriers, development of methods for estimating semi-quantitative amounts of boron content in the tumor before treatment, clinical progress of BNCT and the need for randomized clinical trials with known therapeutic efficacy. If these issues are addressed enough, BNCT can develop as a treatment method. Further research is needed to determine the role of BNCT in clinical medicine.

The main purpose of this article is to analyze the data of the Tehran Municipality websites and provide data mining solutions for managers' decisions.

This research is fundamental and in terms of nature, it can be considered analytical. The data collection method was the field. The statistical population was selected from 220 domains of Tehran Municipality and for analysis, data mining techniques were used to discover the appropriate decision model of city managers. The source of data collection was web analytics and tools used by Google Analytics.

The accuracy of the LSTM deep neural network is 99.84%. Network accuracy is 99.90%, the call is equal to 99.63%, the error is equal to 0.16%, MSM standard is equal to 0.003. The accuracy of the DBScan method with other basic methods for analyzing the data of Tehran Municipality websites is 99.84%, the deep learning method is 99.25%, the nearest neighbor method is 99.81% and the decision tree method is equal to 99.8%.With these interpretations, the rate of improvement of the accuracy of the DBScan method in comparison with the deep learning methods is equal to 0.59%.

Finally, by simulating the DBScan method to identify and analyze the data of Tehran Municipality websites and provide data mining solutions for managers' decisions, it was observed that the proposed method provides suggestions to managers to improve site visits and The performance of the municipality is significantly effective.

The term "electromagnetic fields" (EMF) is a combination of electric and magnetic fields as a diagnostic method as well as a therapeutic tool with many advantages such as ease of operation and painlessness, very controllable, which today has found wide application in regenerative medicine and also cancer treatment.  In addition to organs such as nerves, hearts, and bones that have an electrical function, the presence of electrically charged particles inside the cells creates an internal electromagnetic field. This field can be affected by the external electromagnetic field and cause therapeutic effects. Its therapeutic effects relate to the applications of the electromagnetic field as a stimulus to induce various biological effects on cells, such as altering cell proliferation, differentiation, cell cycle, apoptosis, DNA proliferation, cytokine expression, and more. Also, combination therapy by the electromagnetic field, along with other physical therapies such as radiotherapy and even systemic therapy such as chemotherapy, are the most important approaches to using the electromagnetic field in the treatment of cancer. Subsequently, Electromagnetic fields can lead to the proliferation and differentiation of stem cells and the modulation of the immune system, which plays an important role in the treatment of inflammatory disease and regenerative medicine treatments. Also, this field can create new horizons in cancer treatment due to its many advantages such as being a non-invasive, selective function, and ease of using and as well as affordability.

The present study seeks to assess the effect of interactive information retrieval on the knowledge management process of faculty members of medical universities in Mazandaran provinces. The present research is applied by survey-analytical method. The research population is 450 faculty members of medical universities in Mazandaran province, which is 207 people using Morgan table. Data collection tools were two questionnaires based on the models of two researcher-made questionnaires based on the interactive information retrieval model of Belkin (1996), and Fong and Choi (2009) knowledge management model. Data analysis is by inferential descriptive statistics, Pearson tests, Fisher tests with the help of SPSS software, and Amos. Descriptive and inferential statistical methods are used to analyze the data. In the descriptive statistics section, the mean and standard deviation were the smallest and largest, and in the inferential statistics section, the first and second order confirmatory factor analysis was used. Findings showed that the dimensions of knowledge management (representation, comparison, representation, guidance, and visualization) are involved in interactive retrieval and were recognized as effective factors in knowledge management. Interactive retrieval of information and all its dimensions have a positive and significant relationship and a direct impact on knowledge management of faculty members of medical universities in Mazandaran province, and then representing the most, and then comparing the least influential factors.

The impact of information technologies in improving the training process and enabling the faculty members in various fields of teaching and researching courses more investigation of widespread mission and targets of universities and upper-levelled training centres. The actual research tends to examine the relationship between the use of information technology and the psychological enabling of faculty members of Alborz Medical University.

This research is a practical study from descriptive-measuring type and includes a statistical community of 118 individuals of faculty members of Alborz university of medical sciences in 2018. The information accumulating means included a standardized questionnaire of the psychological enabling and also an entitled questionnaire of the use of information technology. All the accounts were scored based on the Likert measurement, and based on the variants evaluation level, the questions and the hypotheses of the research have applied the Pierson’s Test of coherence factor. In order to analyse and examine the data, the software package of SPSS, version 22 was used.

The results demonstrated that there is a positive and meaningful relationship between the use of information technology and the psychological enabling of the faculty members of Alborz medical university. Meanwhile, there was a meaningful relationship between the factors of information technology use (curriculum edition- taking the proper teaching method –applying the various evaluation methods –active consultation and guidance in teaching) and the psychological enabling.

Based on the significance of enabling the teachers and improving and advancing the quality of training, the information technology can influence and improve the fundamental skills of training quality and it can cause elevation within a widespread atmosphere.

The present study seeks to assess the impact of information interactive recovery on the knowledge management process of faculty members of Gilan University of Medical Sciences, The present study is an applied by survey method. The research population is 452 faculty members of Gilan University of Medical Sciences, which based on Morgan table, the sample population was 208. Data collection tools were two researcher-made questionnaires, based on Belkin, Fong and Choi models. Data were analyzed by descriptive and inferential methods, and included frequency, frequency percentage, frequency distribution table, mean and standard deviation, confirmatory factor analysis, Grunbach's Alpha, regression, Kolmogorov-Smirnov test. Data analysis software version 24 and Amos were used to analyze the data. Pearson correlation test was used to investigate the relationship between interactive information retrieval and knowledge management. Findings showed that dimensions (representation, comparison, representation, leadership, and visualization) are involved in interactive retrieval, and are known as factors affecting knowledge management, in addition, factors (knowledge acquisition, knowledge creation, Knowledge retention, knowledge distribution, knowledge application) also have an impact on knowledge management, among which knowledge distribution has the most, and knowledge retention has the least impact. The results showed that interactive retrieval of information and all its dimensions have a positive and significant relationship and a direct impact on the knowledge management process of faculty members of Gilan University of Medical Sciences, and then compared the most, and then the least influential factor were identified.

The main purpose of this study is to determine the visibility status of Iranian digital libraries.

This study was conducted by link analysis and survey statistics of Iranian digital libraries and the research is evaluative. The present article examines the rankings of Yahoo, Google, Alexa, rankings among Iranian sites, and the links received by Iranian digital libraries. Fifty eligible digital libraries with the right software, information resources, and official library setup make up the potential research community. Descriptive statistics indicators in Excel software have been used to analyze the data.

The research findings showed that only 9 libraries were identified by measuring the validity of the Digital Libraries website with the Yahoo PageRank factor. And the digital library of the Faculty of Entrepreneurship of the University of Tehran have obtained the first rank among the sites inside Iran and the global rank among the statistical population of the research. Allameh Tabatabai University's digital library also ranks first among Yahoo.

The present study has determined the position of digital libraries in Iran and the world. Overall, a high percentage of the digital library websites under study did not have a strong international presence, indicating the weaknesses of these websites. Lack of English and young web pages, lack of Iranian digital libraries are the main reasons for the weak presence of Iranian digital libraries on the web. The use of a combination of appropriate promotion and effective human factors can be effective in improving the condition of these libraries.

The main purpose of this study is to identify and analyze different types of data on the website of Tehran Municipality and to provide appropriate data mining solutions.

This research is fundamental and in terms of nature it can be considered analytical. The data collection method was field and the statistical population of 47 sites were selected among 220 domains of Tehran Municipality and data mining techniques were used for analysis and the source of data collection is web analytics and tools used by Google Analytics.

The accuracy of the normal neural network algorithm is equal to 99.25% and the RMS standard of the normal neural network algorithm is equal to 0.159. The accuracy of the decision tree algorithm is 99.80% and the MSI criterion of the decision tree algorithm is 0.003 and finally the RMS criterion of the decision tree algorithm is 0.045. The accuracy of the CNN algorithm is equal to 99.81% and finally the RMS criterion of the CNN algorithm is equal to 0.035.

Based on the obtained findings, the DB Scan method is equal to other basic methods for analyzing data of Tehran Municipality websites and has a higher accuracy than other methods.

The purpose of this study is to present the performance indicators of public libraries in Iran.

The research method is descriptive-survey and data collection tool is a researcher-made questionnaire with 6 performance criteria (job criteria, professional development, professional commitment, human relationships, flexibility and ethical criteria). The content validity of the questionnaire by the professors and Confirmation elites and its reliability, using the Cronbach's alpha coefficient, is 0.87. The statistical population of the study includes librarians of public libraries of grade 1 to 3 countries, including 248 librarians. Independent T test was used to analyze the data.

Findings show that the highest average is related to job benchmark with an average of 4.00. Then, professional commitment with an average of 3.99, as well as a resilience index with an average of 3.96, an average of human relationships of 3.89, a professional development of 3.86, a moral criterion, and a supramental program of 3.79.

The results show that the six indicators include the job criteria, professional commitment, human relationships, flexibility and ethical criteria are considered by librarians. The indicators can be used to evaluate the performance of public librarians.

The purpose of this research is to determine the relationship between social capital and knowledge management in Iran.

The present study is applied in a quantitative and survey method. The target community of research is the articles published in scientific publications and international and national conferences in Persian language. Articles that include methodologically, hypotheses and research questions, and the method of analyzing the assumptions of the criteria in the meta-analysis were chosen. So, 27 articles with the desired characteristics comprise the statistical population of the study. Data analysis is meta-analysis using CMA2 software to measure the effect size of the assumptions.

Findings in the size of the effect of 15 hypotheses show that in the dimension of social capital, cognitive dimension is 0.644, communication dimension is 0.493, and structural dimension with 0.416, respectively, in knowledge management. In the dimension of knowledge management, knowledge acquisition with 0.287 is the least and the later cultural factor with 0.935 more with social capital and accepts most of the work. In total, the size of the effect of social capital on knowledge management is 0.645.

The results of this study indicate that all aspects of social capital affect knowledge management, the effect of each of the components of social capital on knowledge management, and the amount of social capital effect in each aspect of knowledge management is also different.

This study aims to investigate the citation analysis of the final reports of research projects conducted at Rice Research Institute of Iran (RRII) in order to determine the type of documents, language of resources, citation of internal and external organization, collaborations of researchers. Citation analysis has been used. Citations of final reports of research projects conducted at RRII during 1999-2008 have been analyzed. Results show that out of 3812 total citations, 40.8% were Farsi and 59.2% were Latin. Citing to journal articles with 40.9% was the most cited and websites with 0.3% was the least cited resources. Among the citation, 28.31% were internal and 71.69% were external of AREEO. Out of 287 final reports, 8.37% were from individual work and 91.63% were in team work. When researchers conducted more researches, the total citations per research were low and vice versa. Most cited resources were non-Persian. More than 90% of researches were done with team working and most citations were to the works outside of the AREEO.

The aim of this research is proposing the model of relationship between social capital and tacit knowledge sharing and knowledge used in public libraries of West Azerbaijan which covered by national public library institution using Structural equation modeling approach.
The research is a survey and basically scrutinizing the correlation of the research factors. The statistical population of this research is all of the staffs (except workers) who employed in public libraries that covered by national public library institution in west Azerbaijan. In this research, based on knowledge management process, the tacit knowledge sharing, knowledge using and knowledge organizing factors were selected to study. In this study, various methods were used for data analysis.
Findings: The favorable status of social capital, tacit knowledge sharing, knowledge using, and knowledge organizing in public libraries of west Azerbaijan is more than middle and there is a significant relation between social capital and tacit knowledge sharing and knowledge using.
The outcomes show that social capital is effective in tacit knowledge sharing and knowledge sharing. Also, knowledge organizing has an efficient role in making relation between social capital and tacit knowledge sharing and knowledge using.

Today, one of the most important concerns for universities, establishing top rating in the international Ranking systems and highest scientific productions indexed in valid databases and citation to them is the main criteria for the ranking of universities. The aim of this research is to determine the status of publishing articles and their citations by Top Iranian universities of medical sciences in Web of Science database between2004 to 2014based on type of journals.
This research was done by scientometric method. all research and review articles of clinical medicine and pharmacology & toxicology that have been published by Tehran and Shahid Beheshti University of Medical Sciences from The Science Citation Index Expanded Web of Science (WOS) during 2004-2014 were studied.A checklist was used for collecting data. Gathering Data was completed through searching on the WOS and JCR and were analyzed by the software of the WOS database examined and Excel software.
findings showed that Tehran and Shahid Beheshti University of Medical Sciences have published 8465 and 3846 research and review articles on clinical medicine and pharmacology & toxicology subject areas, respectively.
The percent of the articles published by Tehran and Shahid Beheshti Universities of Medical Sciences in non-Iranian journals was 74.91% and 72.83%; and in open access journals was 71.33% and 72.70%, respectively. Also, Articles in non-Iranian and non-free access journals have more citation impact.
In addition to the number and Citation rate, citation impact of articles in Tehran & Shahid Beheshti Universities of Medical Sciences, in non- Iranian and non-open access journals was more and it is necessary to pay more attention to quantiy & quality of articles in Iranian & open access journals.

This study aimed to assess the occupational health in the University Central Librarriess located in Tehran.
This study is a descriptive survey. The population consisted of central libraries of universities in Tehran (a total of 20 libraries). Data were collected using a questionnaire. The data obtained from the questionnaire were analyzed using SPSS software.
Findings: Analysis showed that the health indicators if Tehran university libraries in total, is18 percent in poor condition, 40% percent medium, 36% good condition, and 3% very good condition. Health indicators are not observed in 3% of the libraries.
Assessment of occupational health in Central University Libraries in Tehran with safety measures, showed that occupational health and safety is in medium condition and can be considered as successful.

Ionizing radiation such as γ-radiation causes deleterious effects on protein.In this research,the effect of gamma radiation in the therapeutic dose of3 Gy and radioprotection of cerium salt (H8N8CeO18) on the structure and surface charge of bovine serum albumin (BSA) was studied. The first, secondary, tertiary structure and surface charge of BSA using UV-Vis spectroscopy, Circular dichroism (CD) and electrophoretic light scattering (ELS) were investigated. The results show that covalent bounds of protein were not destroyed in dose of 3 Gy of gamma irradiation indicating that the first structure of BSA is preserved. But, the secondary and tertiary structures of irradiated BSA proteins has been changed. The result of CD studies shows a 7% decrease in α-helix and an increase in other secondary structures for irradiated BSA in comparison to non- irradiated ones. Results also show that Cerium salt can be a strong radio protector to inhibit changes of secondary and tertiary structures of irradiated BSA protein.

We aimed to determine the degree of importance and prioritize management traits by means of decision making models using Fuzzy multi-criteria decision-making procedure and provide a suitable model to identify factors affecting the selection of directors of the public libraries on the basis of the librarian's perspectives.
In this study, we used a descriptive survey research method and a case study. This research has investigated two groups: first group included all librarians with at least five years precedency in the work of public librarianship in Guilan public libraries and the second group, included experts in the field of library and information sciences, who have had PhD degree and have had experience of working in libraries. We used SPSS19 for analyzing extracted data.
Findings: results showed that the measure namely “knowledge and expertise” with normal weight 0/275 was the most important trait for election of a director. Other measures sequently were “managerial skills” with a normal weight of 0/201, “insight and vision” with normal weight of 0/181, “personality” with normal weight of 0/127, “objectivity” with normal weight of 0/121, and a normal-weight measures “professional reputation” with normal weight of 0/103.
Originality/value: Given the importance of the selection of managers in organizations, having a measurable tool for identifying potential options is a necessity in all organizations, especially public libraries as cultural foundations.

To survey the existence of concepts related to knowledge and information science in elementary school textbooks.
An applied research using quantitative content analysis. The population consists of 44 textbooks of all six grades of elementary school. Data collected using a self-designed checklist and fell into 11 categories.
194 concepts were used in textbooks which sixth grade stands in the first place with 30.5% followed by fifth grade with 18.9% and second grade with 16.3%. Among textbooks, "Quran" with 2466 cases is in the first place, followed by "Farsi" and "Social Science" with 1563 and 730 cases respectively. Considering subjects, "library materials", "studying and reading" and "printing and publishing" are first to third with 63.8%, 12.5% and 8.8%.
There exists no written policy for writing about Knowledge and Information Science concepts in school textbooks even no balance in writing about concepts in different grades or textbooks. Also, information technology has been less considered which needs to be revised due to recent advances.